Communication method, and apparatus

Abstract

A communication method and an apparatus, relating to the field of communications. The method comprises: receiving a first common signal; according to the frequency domain position of the first common signal and a first configuration, determining the frequency domain position of a first control resource, wherein the first configuration indicates the frequency domain position of a second common signal, the frequency domain position of the first common signal is different from the frequency domain position of the second common signal, and the first control resource is associated with the first common signal. By means of using the method, upon receiving any common signal, a terminal device can acquire a correct frequency domain position of a control resource on the basis of the first configuration and the frequency domain position of the detected common signal, thus ensuring the coverage performance of common signals, and not affecting the terminal merging and receiving the specific content borne in the detected common signals since the specific content borne in different common signals can be the same.

Description

Communication method and device

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of the People's Republic of China on December 29, 2023, with application number 202311865183.9 and invention name "A Communication Method and Device", the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the field of communication technology, and in particular to a communication method and device. Background Art

[0004] With the evolution of wireless networks, the bandwidth required by communication systems is getting larger and larger. For example, the next generation of wireless networks and products may use frequency bands higher than the current 5G as the main commercial frequency bands, such as 6G or higher than 6G (U6G) frequency bands as the main commercial frequency bands. Compared with the existing 5G network frequency bands, 6G or U6G frequency bands have richer spectrum resources and can use larger bandwidth. From the perspective of wireless transmission characteristics, higher transmission frequencies also mean greater channel fading at the same transmission distance. Therefore, the coverage performance of various signals in 6G or U6G scenarios is somewhat lost compared to networks using existing frequency bands.

[0005] In 6G or U6G scenarios, the transmission of synchronization signal blocks (PBCH blocks, SSB) and other public signals also has the problem of reduced coverage performance. For example, taking SSB as an example, the terminal needs to detect SSB before accessing the base station. Since the base station cannot know the specific location of the terminal, it cannot perform fine beam alignment when sending SSB (or, the base station can only send with a relatively wide beam), and thus cannot obtain the beamforming gain it brings. At the same time, as the service frequency increases, the impact of large-scale fading (path loss) increases further, which will also significantly affect the reception performance and coverage performance of SSB.

[0006] Therefore, how to improve the reception and coverage performance of public signals is an issue worthy of attention. Summary of the Invention

[0007] The embodiments of the present application provide a communication method and apparatus for improving the success rate of receiving a public signal.

[0008] In a first aspect, the present application provides a communication method that can be performed by a terminal or a module (such as a chip) in the terminal. The method includes: receiving a first common signal; determining a frequency domain position of a first control resource based on the frequency domain position of the first common signal and a first configuration, wherein the first configuration indicates the frequency domain position of the second common signal, the frequency domain position of the first common signal is different from the frequency domain position of the second common signal, and the first control resource is associated with the first common signal.

[0009] By adopting the above method, the terminal can determine the frequency domain position of the first control resource based on the frequency domain position of the first common signal and the frequency domain position of the second common signal indicated by the first configuration. That is to say, when the terminal device receives any common signal, it can obtain the correct frequency domain position of the control resource based on the first configuration and the frequency domain position of the detected common signal. Therefore, even if the specific content carried by different common signals is the same, the terminal can also obtain the correct frequency domain position of the control resource, and then the terminal can combine the content carried in the common signals detected in multiple periods for reception, which can improve the coverage performance / reception performance of the common signal.

[0010] In one possible design, the first configuration indicates frequency domain positions of multiple common signals, where the frequency domain positions of the multiple common signals include the frequency domain position of the first common signal and the frequency domain position of the second common signal. The multiple common signals are common signals of the same type.

[0011] In one possible design, the control resources corresponding to the first common signal and the control resources corresponding to the second common signal may be different. In other words, the control resources corresponding to the multiple common signals may be different. By corresponding different common signals to different control resources, the control information can be sent using a finer beam (or a method with higher beamforming gain), thereby improving the coverage performance of the control information carried by different control resources and improving the success rate of receiving the control information.

[0012] In one possible design, determining the frequency domain position of the first control resource based on the frequency domain position of the first common signal and the first configuration can be implemented in the following manner but not limited to: determining the second offset based on the first offset and the second configuration, the second configuration indicating the correspondence between the first offset and the second offset; the first offset indicates the offset of the starting frequency domain position of the first common signal relative to the starting frequency domain position of the second common signal; the first offset is determined according to the first configuration; and determining the frequency domain position of the first control resource based on the second offset.

[0013] Using the above design, the terminal can determine the second offset based on the first offset and the second configuration, and then determine the frequency domain position of the first control resource according to the second offset. Therefore, the specific content carried by different public signals can be the same, which does not affect the terminal's combined reception of the content carried in the detected public signal.

[0014] In one possible design, the first common signal includes a unit offset value; determining the frequency domain position of the first control resource based on the frequency domain position of the first common signal and the first configuration can be implemented in the following manner, but not limited to: determining the second offset based on the first offset and the unit offset value; the first offset indicates the offset of the starting frequency domain position of the first common signal relative to the starting frequency domain position of the second common signal; the first offset is determined based on the first configuration; and determining the frequency domain position of the first control resource based on the second offset.

[0015] In one possible design, the second offset is the offset of the starting frequency domain position of the second common signal relative to the starting frequency domain position of the first control resource.

[0016] In one possible design, the second offset is the offset of the starting frequency domain position of the second common resource block relative to the starting frequency domain position of the first control resource, and the second common resource block is the common resource block where the starting frequency domain position of the second common signal is located.

[0017] In one possible design, the second offset is the offset of the starting frequency domain position of the second control resource relative to the starting frequency domain position of the first control resource, wherein the frequency domain position of the second control resource is determined according to the frequency domain position of the second common signal.

[0018] In one possible design, the second offset is the offset of the starting frequency domain position of the first common signal relative to the starting frequency domain position of the first control resource.

[0019] In one possible design, the second offset is the offset of the starting frequency domain position of the first common resource block relative to the starting frequency domain position of the first control resource, and the first common resource block is the common resource block where the starting frequency domain position of the first common signal is located.

[0020] In one possible design, the second offset is the sum of the offset of the starting frequency domain position of the first common signal relative to the starting frequency domain position of the first control resource and a third offset, wherein the third offset is the offset of the starting frequency domain position of the second common signal relative to the starting frequency domain position of the second control resource, wherein the second control resource is associated with the second common signal.

[0021] In one possible design, the center frequencies of some or all of the multiple common signals are located in the same synchronization grid. In other words, the center frequencies of some or all of the multiple common signals are located in the same frequency position as a synchronization grid.

[0022] In one possible design, the frequency point of the synchronization grid is the center frequency point of the transmission pattern composed of the multiple common signals, or the frequency point of the synchronization grid is the center frequency point of the common signal with the lowest frequency domain position among the multiple common signals, or the frequency point of the synchronization grid is the center frequency point of the common signal with the highest frequency domain position among the multiple common signals, or the frequency point of the synchronization grid is the center frequency point of the second common signal, the frequency domain starting position of the second common signal, or the frequency domain ending position of the second common signal.

[0023] In one possible design, the time domain position of the first common signal and the time domain position of the second common signal at least partially overlap.

[0024] With the above design, the time domain resources of the first common signal and the second common signal can be completely identical, or partially identical. Furthermore, the frequency domain location of the first common signal and the frequency domain location of the second common signal are different. Therefore, the base station can implement frequency division transmission of the common signal, which can improve the coverage performance of the common signal.

[0025] In a second aspect, the present application provides a communication method that can be performed by a base station or a module (such as a chip) in the base station. The method includes: sending a first common signal; determining the frequency domain position of a first control resource based on the frequency domain position of the first common signal and a first configuration, wherein the first configuration indicates the frequency domain position of a second common signal, the frequency domain position of the first common signal is different from the frequency domain position of the second common signal, and the first control resource is associated with the first common signal.

[0026] In one possible design, control information is sent on the first control resource.

[0027] In one possible design, the second common signal is sent.

[0028] In one possible design, the first configuration indicates the frequency domain positions of multiple common signals, and the frequency domain positions of the multiple common signals include the frequency domain position of the first common signal and the frequency domain position of the second common signal; when sending the first common signal, the first common signal is sent according to the first configuration.

[0029] Some possible designs and beneficial effects of the second aspect can be referred to the first aspect and will not be repeated here.

[0030] In a third aspect, the present application provides a communication device, comprising: a transceiver unit and a processing unit; the transceiver unit is used to receive a first common signal; the processing unit is used to determine the frequency domain position of a first control resource based on the frequency domain position of the first common signal and a first configuration, wherein the first configuration indicates the frequency domain position of the second common signal, the frequency domain position of the first common signal is different from the frequency domain position of the second common signal, and the first control resource is associated with the first common signal.

[0031] In one possible design, the first configuration indicates frequency domain positions of multiple common signals, where the frequency domain positions of the multiple common signals include the frequency domain position of the first common signal and the frequency domain position of the second common signal.

[0032] In one possible design, the processing unit is used to determine the second offset based on the first offset and the second configuration when determining the frequency domain position of the first control resource based on the frequency domain position of the first common signal and the first configuration, the second configuration indicating the correspondence between the first offset and the second offset; the first offset indicates the offset of the starting frequency domain position of the first common signal relative to the starting frequency domain position of the second common signal; the first offset is determined based on the first configuration; and the frequency domain position of the first control resource is determined based on the second offset.

[0033] In one possible design, the first common signal includes a unit offset value; the processing unit is used to determine a second offset based on the first offset and the unit offset value when determining the frequency domain position of the first control resource based on the frequency domain position of the first common signal and the first configuration, and determine the frequency domain position of the first control resource based on the second offset, wherein the first offset indicates the offset of the starting frequency domain position of the first common signal relative to the starting frequency domain position of the second common signal, and the first offset is determined according to the first configuration.

[0034] Some possible designs and beneficial effects of the third aspect can be referred to the first aspect and will not be repeated here.

[0035] In a fourth aspect, the present application provides a communication device, comprising: a transceiver unit and a processing unit, the transceiver unit being used to send and receive information; the processing unit being used to send a first common signal through the transceiver unit; determining the frequency domain position of a first control resource based on the frequency domain position of the first common signal and a first configuration, wherein the first configuration indicates the frequency domain position of a second common signal, the frequency domain position of the first common signal is different from the frequency domain position of the second common signal, and the first control resource is associated with the first common signal.

[0036] In one possible design, the transceiver unit is used to send control information on the first control resource.

[0037] In one possible design, the transceiver unit is used to send the second common signal.

[0038] In one possible design, the first configuration indicates the frequency domain positions of multiple common signals, and the frequency domain positions of the multiple common signals include the frequency domain position of the first common signal and the frequency domain position of the second common signal; the transceiver unit is used to send the first common signal according to the first configuration when sending the first common signal.

[0039] Some possible designs and beneficial effects of the fourth aspect can be referred to the first aspect and will not be repeated here.

[0040] In a fifth aspect, the present application provides a communication device, which may be a first device, or a module or unit (for example, a chip, or a chip system, or a circuit) in the first device that corresponds one-to-one to the method / operation / step / action described in any one of the first to second aspects, or may be capable of being used in combination with the first device.

[0041] In a sixth aspect, the present application provides a communication device comprising at least one processing element, wherein at least one storage element is used to store programs and data, and the at least one processing element is used to read and execute the programs and data stored in the storage element so that any method described in any of the above aspects of the present application is implemented.

[0042] In one possible design, the communication device further includes the at least one storage element.

[0043] In a seventh aspect, the present application further provides a computer program, which, when executed on a computer, enables the computer to execute any of the methods described in any of the above aspects.

[0044] In an eighth aspect, the present application provides a communication device comprising: an interface circuit and at least one processor; the interface circuit is used to provide input and / or output of programs or instructions to the at least one processor; the at least one processor is used to execute the programs or instructions so that the communication device can implement any of the methods described in any of the above aspects.

[0045] In one possible manner, the communication device includes the at least one memory, and the at least one memory is used to store the program or instruction.

[0046] In a ninth aspect, the present application provides a computer storage medium storing a software program. When the software program is read and executed by one or more processors, the software program can implement any of the methods described in any of the above aspects.

[0047] In a tenth aspect, the present application provides a computer program product comprising instructions, which, when executed on a computer, enables the computer to execute any of the methods described in any of the above aspects.

[0048] In the eleventh aspect, the present application provides a chip system, which includes at least one chip and a memory, and the at least one chip is used to read and execute the program stored in the memory to implement any of the methods described in any of the above aspects.

[0049] In the twelfth aspect, the present application provides a communication system, which includes at least one terminal and a base station, the terminal is used to execute any method described in the first aspect, and the base station is used to execute any method described in the second aspect.

[0050] Based on the implementations provided in the above aspects, this application can also be further combined to provide more implementations. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] FIG1 shows a schematic diagram of the architecture of a communication system;

[0052] FIG2 shows a schematic diagram of a time-frequency resource structure of SSB;

[0053] FIG3 shows a schematic diagram comparing a U6G scenario and a Sub6G scenario;

[0054] FIG4 shows a schematic diagram of frequency division transmission of multiple SSBs;

[0055] FIG5 shows a schematic diagram of the frequency domain positions corresponding to SSB and CORESET0 (or CSS0);

[0056] FIG6 shows a schematic diagram of different SSBs and corresponding CORESET0s;

[0057] FIG7 shows a possible flow diagram of a communication method;

[0058] FIG8 is a schematic diagram showing possible locations of the second common signal;

[0059] FIG9 is a schematic diagram showing possible positions of the frequency points of the synchronization grid;

[0060] FIG10A shows one of the schematic diagrams of the starting position and the ending position of the second offset;

[0061] FIG10B shows a second schematic diagram of the starting position and the ending position of the second offset;

[0062] FIG10C shows a third schematic diagram of the starting position and the ending position of the second offset;

[0063] FIG10D shows a fourth schematic diagram of the starting position and the ending position of the second offset;

[0064] FIG10E shows a fifth schematic diagram of the starting position and the ending position of the second offset;

[0065] FIG10F shows a sixth schematic diagram of the starting position and the ending position of the second offset;

[0066] FIG10G shows a seventh schematic diagram of the starting position and the ending position of the second offset;

[0067] FIG11A shows one of the schematic diagrams of indexes of a plurality of common signals;

[0068] FIG11B shows a second schematic diagram of indexes of multiple common signals;

[0069] FIG11C shows a third schematic diagram of indexes of multiple common signals;

[0070] FIG11D shows a fourth schematic diagram of indexes of multiple common signals;

[0071] FIG11E shows a fifth schematic diagram of indexes of multiple common signals;

[0072] FIG11F shows a sixth schematic diagram of indexes of multiple common signals;

[0073] FIG11G shows a seventh schematic diagram of indexes of multiple common signals;

[0074] FIG12 shows a schematic diagram of a third common signal and a third control resource;

[0075] FIG13 shows a schematic structural diagram of a communication device;

[0076] FIG14 shows a schematic structural diagram of another communication device. DETAILED DESCRIPTION

[0077] The specific implementation of the present application is described below with reference to the accompanying drawings in the embodiments of the present application. However, the implementation of the present application may also include combining these embodiments without departing from the spirit or scope of the present application, such as adopting other embodiments and making structural changes. Therefore, the detailed description of the following embodiments should not be understood in a restrictive sense. The terms used in the examples section of the present application are only used to explain the specific embodiments of the present application and are not intended to limit the present application.

[0078] The embodiments of the present application can be applied to various communication systems, such as: global system for mobile communications (GSM) system, code division multiple access (CDMA) system, wideband code division multiple access (WCDMA) system, general packet radio service (GPRS), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), universal mobile telecommunication system (UMTS), world-wide interoperability for microwave access (WIMAX) communication system, 5G system or new radio (NR), or applied to future communication systems or other similar communication systems.

[0079] Figure 1 is a schematic diagram of the architecture of a communication system 1000 used in an embodiment of the present application. As shown in Figure 1 , the communication system includes a radio access network 100 and a core network 200. Optionally, the communication system 1000 may also include the Internet 300. The radio access network 100 may include at least one radio access network device (such as 110a and 110b in Figure 1 ) and at least one terminal (such as 120a-120j in Figure 1 ). The terminal is wirelessly connected to the radio access network device, and the radio access network device is wirelessly or wiredly connected to the core network. The core network device and the radio access network device may be independent, distinct physical devices, or the core network device's functions and the radio access network device's logical functions may be integrated into the same physical device, or a single physical device may integrate some of the core network device's functions and some of the radio access network device's functions. Terminals and radio access network devices may be interconnected via wired or wireless connections. Figure 1 is merely a schematic diagram. The communication system may also include other network devices, such as wireless relay devices and wireless backhaul devices, which are not shown in Figure 1 .

[0080] Radio access network equipment, referred to as network equipment, can be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next-generation NodeB (gNB) in a 5G mobile communication system, a next-generation base station in a 6th-generation (6G) mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system. It can also be a module or unit that performs some of the functions of a base station, such as a centralized unit (CU) or a distributed unit (DU). The CU performs the functions of the base station's radio resource control protocol and packet data convergence protocol (PDCP), as well as the service data adaptation protocol (SDAP). The DU performs the functions of the base station's radio link control layer and medium access control (MAC) layer, as well as some or all of the physical layer. For detailed descriptions of each of these protocol layers, please refer to the relevant technical specifications of the 3rd Generation Partnership Project (3GPP). The wireless access network device can be a macro base station (such as 110a in Figure 1), a micro base station or an indoor station (such as 110b in Figure 1), a relay node, a donor node, etc. The embodiments of this application do not limit the specific technology and device form used by the wireless access network device. For ease of description, the following description uses a base station as an example of a wireless access network device.

[0081] A terminal may also be referred to as a terminal device, user equipment (UE), mobile station, mobile terminal, etc. The terminal can be widely used in various scenarios, such as device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (IOT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grid, smart furniture, smart office, smart wearable, smart transportation, smart city, etc. The terminal can be a mobile phone, tablet computer, computer with wireless transceiver function, wearable device, vehicle, drone, helicopter, airplane, ship, robot, robotic arm, smart home device, etc. The embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal.

[0082] Base stations and terminals can be fixed or mobile. They can be deployed on land, indoors or outdoors, handheld or vehicle-mounted; on water; or on aircraft, balloons, and satellites. The embodiments of this application do not limit the application scenarios of base stations and terminals.

[0083] The roles of base stations and terminals can be relative. For example, the helicopter or drone 120i in Figure 1 can be configured as a mobile base station. To terminals 120j accessing the wireless access network 100 via 120i, drone 120i is a base station. However, to base station 110a, 120i is a terminal, meaning that communication between 110a and 120i occurs via a wireless air interface protocol. Of course, communication between 110a and 120i can also occur via a base station-to-base station interface protocol. In this case, 120i is also a base station relative to 110a. Therefore, base stations and terminals can be collectively referred to as communication devices. 110a and 110b in Figure 1 can be referred to as communication devices with base station functionality, while 120a-120j in Figure 1 can be referred to as communication devices with terminal functionality.

[0084] Communication between base stations and terminals, between base stations, and between terminals can be carried out through authorized spectrum, unauthorized spectrum, or both; communication can be carried out through spectrum below 6 gigahertz (GHz), spectrum above 6 GHz, or spectrum below 6 GHz and spectrum above 6 GHz. The embodiments of the present application do not limit the spectrum resources used for wireless communication.

[0085] In the embodiments of the present application, the functions of the base station may also be performed by a module (such as a chip) in the base station, or by a control subsystem that includes the base station functions. The control subsystem that includes the base station functions here may be a control center in the above-mentioned application scenarios such as smart grid, industrial control, smart transportation, and smart city. The functions of the terminal may also be performed by a module (such as a chip or modem) in the terminal, or by a device that includes the terminal functions.

[0086] Below, some terms used in the embodiments of the present application are explained to facilitate understanding by those skilled in the art.

[0087] 1. Subcarrier (SC): In an orthogonal frequency division multiplexing (OFDM) system, the frequency domain is divided into several sub-resources. Each sub-resource in the frequency domain is called a subcarrier. Subcarrier can also be understood as the minimum granularity of frequency domain resources in current communication systems.

[0088] 2. Subcarrier spacing (SCS): In an OFDM system, the spacing between the center or peak positions of two adjacent subcarriers in the frequency domain. For example, the subcarrier spacing in an LTE system is 15 kHz, while the subcarrier spacing in a 5G NR system can be 15 kHz, 30 kHz, 60 kHz, or 120 kHz.

[0089] 3. Resource Block (RB): An RB can include multiple subcarriers in the frequency domain. For example, an RB in the LTE system includes 12 subcarriers, and a resource block in the 5G NR system also includes 12 subcarriers. As communication systems evolve, the number of subcarriers included in an RB can also be different, and the subcarriers included in an RB can be continuous or non-contiguous.

[0090] 4. SSB:

[0091] In the current communication network, the terminal mainly searches for cells based on searching SSB. SSB consists of two parts, namely the synchronization signal (SS) and the physical broadcast channel (PBCH). The SS includes the primary synchronization signal (PSS) and the secondary synchronization signal (SSS). Therefore, it can also be considered that the SSB consists of three parts. Among them, the combination of SS and PBCH can be used to obtain cell identification (cell ID), downlink timing (for example, finding the reference point of downlink transmission, such as the frame boundary), and the acquisition of necessary system messages (for example, obtaining the time-frequency resource location of the physical downlink control channel (PDCCH) corresponding to the system information block 1 (SIB1)).

[0092] Before detecting an SSB, the terminal does not know the specific time-frequency resource location of the SSB. In other words, the terminal needs to blindly detect the location of the SSB. However, due to the very wide cell bandwidth in NR, if the terminal attempts to detect the SSB on every frequency point, the terminal's access speed will be very slow. Therefore, the NR protocol specifically defines a synchronization raster, which has different sizes in different frequency bands, namely 1200kHz, 1.44MHz, and 17.28MHz. In other words, the terminal can attempt to detect the SSB one by one at intervals of the synchronization raster, thereby improving the terminal's SSB detection speed. For example, the center frequency of the SSB can be the same as the frequency of the synchronization raster. During initial access, the terminal assumes that the base station sends the SSB periodicity of 20ms. In other words, if on a synchronization raster, if the terminal does not detect the SSB within 20ms at the frequency point of the synchronization raster, the terminal can continue detection on another synchronization raster.

[0093] The time-frequency resource structure of SSB is shown in Figure 2. SSB contains four consecutive symbols in the time domain and occupies 20 RBs in the frequency domain, that is, 240 subcarriers.

[0094] Frequency domain position of SSB: The position of SSB in the frequency domain is defined by the synchronization grid, as described above.

[0095] SSB time-domain position: The time-domain position of an SSB is defined by the SSB pattern. An SSB pattern specifies the time-domain position of a group of consecutive SSBs within a half-frame. Currently, 3GPP defines five SSB patterns for unshared spectrum. However, each frequency band typically has only one or two available SSB patterns, and different SSB patterns have a one-to-one mapping with SCSs and bands.

[0096] SIB1 is carried on the physical downlink shared channel (PDSCH), but the time-frequency location and transmission parameters of the PDSCH carrying SIB1 are indicated by downlink control information (DCI). The master information block (MIB) in the SSB contains a 4-bit control resource set zero (CORESET0) and a 4-bit common search space 0 (CSS0). CORESET0 and CSS0 respectively indicate the frequency domain location and time domain location where the DCI for scheduling SIB1 is received.

[0097] The MIB is determined by higher-layer signaling. Since higher-layer signaling has a long update cycle, the content of the MIB bits remains unchanged within a predetermined period. Accordingly, the terminal can receive multiple MIBs within a predetermined period and combine them for reception to improve reception success. For example, if the SSB transmission period is 20ms and the predetermined period is 80ms, then there are four SSBs within each 80ms period, enabling the combined reception of four MIBs.

[0098] (1) CORESET0 determination: After the terminal detects SSB, it obtains CORESET0 from MIB. CORESET0 is used to indicate SSBMuxPattern, offset (Offset), And read Kssb from MIB.

[0099] SSBMuxPattern indicates the SSB and CORESET multiplexing mode, which is used to subsequently determine CSS 0. For example, MuxPattern#1, MuxPattern#2, and MuxPattern#3 correspond to different SSB and CORESET multiplexing modes, respectively.

[0100] Offset and Kssb are used to determine the starting RB position of CORESET0. Kssb indicates the number of subcarriers in the SCS of the SSB. Offset represents the offset of the starting RB of the reference common resource block (CRB) from the starting RB of CORESET0, expressed in the number of RBs. Indicates the number of symbols occupied by CORESET0 in the time domain, that is, the time domain length of CORESET0 (the unit is OFDM symbol). Used to determine the frequency domain width of CORESET0.

[0101] Specifically, taking the SCS of SSB and the SCS of CRB as 15kHz as an example, the corresponding configuration parameters are given in Table 1 below. The terminal can determine the index corresponding to CORESET0 according to MIB, and further determine SSBMuxPatern, offset (Offset), Four parameters.

[0102] Table 1

[0103] (2) CSS 0 determination: CSS 0 itself corresponds to multiple time domain positions, and one SSB index in NR corresponds to one time domain position of CSS 0.

[0104] As can be seen above, when transmitting SSBs, the time-frequency positions of CORESET0 and CSS0 must be determined based on the MIB in order to detect the PDCCH and receive SIB1. Furthermore, the beam used to transmit SIB1 is the same as the beam used to transmit the corresponding SSB. Accordingly, when receiving SIB1, the terminal uses the same receive beam as the beam used to receive the SSB corresponding to SIB1.

[0105] 5. Public Signal

[0106] It can be called public information or non-dedicated information, or it can be understood as information sent by one communication device to multiple communication devices. Taking downlink communication as an example, public information can be understood as information sent by the base station to multiple terminals or a terminal group in the cell, or it can be understood as information that the base station does not specifically send to a terminal or a terminal group in the cell, or it can be understood as information that can be used by multiple terminals or a terminal group in the cell. Public signals can be used for processes such as terminal identification of the cell, initial terminal access to the cell, neighboring cell measurement, or cell handover. For example, public information can be one or more of SSB, PSS, SSS, and PBCH.

[0107] 7. Frequency Division Multiplexing

[0108] Frequency division multiplexing can be referred to as frequency division or frequency division. The frequency division multiplexing in this application specifically means that the time domain positions overlap, but the frequency domain positions do not overlap. For example, frequency division SSB can specifically mean that different SSB time domain positions are the same and the frequency domain positions do not overlap, or different SSB time domain positions partially overlap and the frequency domain positions do not overlap, or different SSB time domain positions have a containing and being contained relationship and the frequency domain positions do not overlap.

[0109] U6G can be understood as a frequency band above 6 GHz, such as 6.425 to 7.125 GHz. Sub6G can be 2.6 GHz, 3.5 GHz, or 4.9 GHz. As shown in Figure 3, the typical bandwidth of current wireless networks is 100 MHz, with a subcarrier spacing of 30 kHz, corresponding to a maximum of 273 resource blocks (RBs) that can be scheduled per unit time. In a U6G scenario, a possible typical bandwidth is 400 MHz, with a subcarrier spacing of 60 kHz, corresponding to a maximum of 550 resource blocks (RBs) that can be scheduled per unit time. Therefore, future networks using the U6G frequency band will have stronger transmission performance and more flexible scheduling and access capabilities. At the same time, while using the U6G frequency band can bring the aforementioned benefits, from the perspective of wireless transmission characteristics, a higher transmission frequency also means greater channel fading at the same transmission distance. Therefore, the coverage performance of various signals in the U6G scenario will be somewhat reduced compared to existing networks using the Sub6G frequency band.

[0110] To address the issue of reduced coverage performance in SSB transmission, one possible design is to send multiple SSBs in the same time unit and at different frequency domain locations. Figure 4 is a possible example. By sending multiple SSBs using frequency division, the beam direction of each SSB can be different, allowing each SSB to be sent using a beam with a finer beam width and greater beamforming gain, thereby improving the terminal's SSB reception success rate and further improving coverage performance. In this way, the terminal may detect and access the cell based on any one of the multiple SSBs sent using frequency division.

[0111] Similar to SSB, SIB1 and its corresponding PDCCH (or CORESET0 or CSS0) also have limited coverage performance in U6G scenarios. Therefore, CORESET0 or CSS0 or SIB1 also needs to have a one-to-one mapping relationship with SSB to avoid the problem of limited coverage performance of SIB1 and its corresponding PDCCH. In other words, when each SSB has an independent corresponding CORESET0 or CSS0 or SIB1, the problem of limited coverage of SSB, SIB1 and the PDCCH corresponding to SIB1 can be solved.

[0112] However, generally, SSB occupies 20 RBs in the frequency domain, while the frequency domain resources corresponding to CORESET0 or CSS0 can be up to 96 RBs, as shown in Figure 5. That is, if each SSB has an independent corresponding CORESET0 or CSS0 or SIB1, due to the large number of RBs occupied by CORESET0 or CSS0, the flexibility of indicating the frequency domain position of CORESET0 or CSS0 is limited. For example, because the frequency domain width of CORESET0 is much larger than the frequency domain width of SSB, the existing technology can only indicate 16 indexes using Table 1, which may not be suitable for indicating the CORESET0 corresponding to different SSBs in the frequency-divided SSB scenario.

[0113] Furthermore, if the frequency-division transmitted SSBs directly indicate the CORESET0 or CSS0 corresponding to different SSBs through the MIB, the MIBs carried by different SSBs will be inconsistent due to the different CORESET0 or CSS0 corresponding to different SSBs. As shown in Figure 6, the CORESET0 or CSS0 corresponding to SSB0, the CORESET0 or CSS0 corresponding to SSB1, and the CORESET0 or CSS0 corresponding to SSB2 are all different. Therefore, SSB0, SSB1, and SSB2 need to carry three different MIBs. As a result, the terminal side may not be able to combine and receive the MIBs received in multiple cycles, reducing transmission performance.

[0114] In this application, a common signal may refer to one of SSB, PSS, SSS, PBCH, or other signals that can be used by a terminal to access the network. A common resource block may refer to a CRB, or a frequency domain resource unit corresponding to system information. Control resources may be CORESET0 and / or CSS0. CORESET0 and / or CSS0 both belong to the transmission resources corresponding to the DCI for scheduling SIB1, that is, the base station may send DCI for scheduling SIB1 on CORESET0 and / or CSS0.

[0115] It will be understood that the following description is made using the common signal as SSB, the common resource block as CRB, and the control resource as CORESET0 as an example, which is not intended to be a limitation of the present application.

[0116] Based on the above network system architecture and the content of the above related technical introduction, several possible communication methods are provided in the embodiments of the present application. The execution subjects of each communication method are introduced using a network base station and a terminal as examples. For example, the base station can be the access network device 110a or the access network device 110b in Figure 1 above. The terminal can be any of the terminals 120 shown in Figure 1 above. In addition, it should be understood that the base station can also be replaced by a communication device with base station functions or a chip, unit or module inside a communication device with base station functions. The terminal can also be replaced by a communication device with terminal functions or a chip, unit or module inside a communication device with terminal functions.

[0117] FIG7 exemplarily shows a possible flow diagram of a communication method provided in an embodiment of the present application. As shown in FIG7 , the method includes:

[0118] Step 700: The base station sends a first common signal, and correspondingly, the terminal receives the first common signal.

[0119] Specifically, the base station may send a first common signal, or the base station may send multiple common signals including the first common signal. The terminal device may detect (or receive) one or more common signals among the multiple common signals. When the terminal detects a common signal, the first common signal is also a common signal actually detected by the terminal. When the terminal detects multiple common signals, the first common signal may be a common signal with the best corresponding beam quality among the multiple common signals.

[0120] Step 720: The terminal determines the frequency domain position of the first control resource based on the frequency domain position of the first common signal and the first configuration, wherein the first configuration information indicates the frequency domain position of the second common signal, the frequency domain position of the first common signal does not overlap with the frequency domain position of the second common signal, and the first control resource is associated with the first common signal.

[0121] The first control resource is associated with the first common signal, which can be understood as corresponding to the first common signal. In this application, each common signal has an independent corresponding first control resource, or in other words, each common signal has a unique corresponding first control resource. For example, as shown in Figure 6, the CORESET0 or CSS0 corresponding to SSB0, the CORESET0 or CSS0 corresponding to SSB1, and the CORESET0 or CSS0 corresponding to SSB2 are all different.

[0122] It should be noted that the base station may or may not send a second public signal. This application focuses on the first public signal. This application does not limit whether the terminal receives other public signals or whether the base station sends other public signals.

[0123] Exemplarily, the frequency domain position of the first common signal is different from the frequency domain position of the second common signal, that is, the frequency domain position of the first common signal does not overlap with the frequency domain position of the second common signal. It can also be understood that the frequency domain units included in the frequency domain resources of the first common signal are different from the frequency domain units included in the frequency domain resources of the second common signal, or the frequency domain units included in the frequency domain resources of the first common signal and the frequency domain units included in the frequency domain resources of the second common signal do not have the same frequency domain units. For example, the frequency domain unit can be a subcarrier or RB, etc., which is not limited in this application.

[0124] Exemplarily, the time domain position of the first common signal and the time domain position of the second common signal at least partially overlap. It can also be understood that the time domain resources of the first common signal and the time domain resources of the second common signal at least partially share the same time domain units. For example, the time domain unit can be a symbol, which is not limited in this application.

[0125] In combination with the fact that the frequency domain position of the first common signal and the frequency domain position of the second common signal do not overlap, this example can also be understood as that the first common signal and the second common signal are frequency division multiplexed. In other words, the base station sends a common signal by frequency division. It should be noted that the base station in this application sends a common signal by frequency division, which refers to the relationship between the resources configured for multiple common signals, and does not limit whether the base station actually sends one common signal or multiple common signals.

[0126] Exemplarily, the base station sends a common signal in a frequency division manner. Wherein, if the base station sends multiple common signals, the time domain positions corresponding to the multiple common signals are at least partially overlapped, and the frequency domain positions corresponding to the multiple common signals do not overlap. Taking the case where multiple common signals include a first common signal and a second common signal, the time domain position of the first common signal and the time domain position of the second common signal are the same, and the frequency domain position of the first common signal and the frequency domain position of the second common signal do not overlap. Alternatively, the time domain position of the first common signal and the time domain position of the second common signal partially overlap, and the frequency domain position of the first common signal and the frequency domain position of the second common signal do not overlap. Alternatively, the time domain position of the first common signal includes the time domain position of the second common signal (or the time domain position of the second common signal includes the time domain position of the first common signal), and the frequency domain position of the first common signal and the frequency domain position of the second common signal do not overlap.

[0127] For example, as shown in Figure 6, the time domain position of the first common signal is the same as the time domain position of the second common signal, and the frequency domain position of the first common signal does not overlap with the frequency domain position of the second common signal. In other words, the base station sends the first common signal and the second common signal respectively at different frequency domain positions at the same time, or in other words, the base station sends the first common signal and the second common signal using frequency division.

[0128] In one possible implementation, the first configuration indicates the frequency domain positions of multiple common signals, and the frequency domain positions of the multiple common signals include the frequency domain position of the first common signal and the frequency domain position of the second common signal. The frequency domain positions of multiple common signals can be understood as the frequency domain positions of different common signals, for example, the frequency domain positions of SSBs with different indexes. Among them, the first configuration can also be called a pattern of common signals. The first configuration can be predefined by the protocol or notified to the terminal through signaling.

[0129] When the first configuration is predefined, since the frequency domain positions of multiple common signals meet the relationship indicated by the first configuration, the base station sends the first common signal in this application, which can also be understood as the base station sending the first common signal according to the first configuration.

[0130] When the first configuration is indicated by the base station through signaling, the base station sends the first public signal in this application, which can also be understood as the base station sending the first public signal according to the first configuration. The base station also sends information that can indicate the frequency domain positions of multiple public signals, that is, the base station also sends signaling including the first configuration.

[0131] When the first configuration is carried in the first common signal, that is, the terminal device learns the first configuration by receiving the first common signal. The base station sends the first common signal, and the first common signal indicates the first configuration.

[0132] Exemplarily, the plurality of common signals may be common signals of the same type. For example, the first common signal and the second common signal are common signals of the same type, for example, the first common signal and the second common signal are two different SSBs.

[0133] Exemplarily, the SCSs corresponding to the plurality of common signals are the same. For example, the SCSs of the first common signal and the second common signal are the same.

[0134] It is understood that this application does not limit the time-frequency resources occupied by multiple common signals, or the patterns of multiple common signals. For example, the patterns of multiple common signals can refer to Figures 11A to 11G below. The patterns of multiple common signals provided in this application are only examples and are not intended to limit this application.

[0135] Exemplarily, multiple common signals occupy the same time domain resources, and the frequency domain positions of the multiple common signals do not overlap, wherein the second common signal can be the common signal with the lowest frequency domain position among the multiple common signals, or the common signal with the highest frequency domain position among the multiple common signals, or the common signal at an intermediate frequency domain position among the multiple common signals, or any one of the multiple common signals, etc., and this application does not limit this. For example, the pattern of multiple common signals can be as shown in a, b, and c in Figure 8. In (a) of Figure 8, the number of multiple common signals is 3, and the second common signal is the common signal with the lowest frequency domain position among the three common signals. In (b) of Figure 8, the number of multiple common signals is 3, and the second common signal is the common signal with the highest frequency domain position among the three common signals. In (c) of Figure 8, the number of multiple common signals is 5, and the second common signal is the common signal at an intermediate frequency domain position among the five common signals.

[0136] In one possible implementation, the terminal can detect common signals at intervals of a synchronization grid. It can be understood that the center frequency points of some or all of the multiple common signals are located in the same synchronization grid. In other words, the center frequency points of some or all of the multiple common signals are the same as the frequency points of a synchronization grid. It can also be understood that multiple common signals correspond to the same synchronization grid, or multiple common signals are associated with the same synchronization grid. It can also be understood that the terminal can search for one or more common signals in a synchronization grid. Therefore, unlike in NR, the terminal can only search for one common signal in a synchronization grid, and the center frequency point of the common signal is the same as the frequency point of the synchronization grid. In the present application, the terminal can search for one or more common signals in a synchronization grid, and the frequency point of the synchronization grid in the present application can adopt but is not limited to the following design methods:

[0137] Exemplarily, the frequency point of the synchronization grid is the center frequency point of the pattern of the multiple common signals. The frequency point of the synchronization grid is the center frequency point of the pattern of the multiple common signals. It can also be understood that the distribution of the multiple common signals is centered around the frequency point of the synchronization grid. For example, in FIG9 (a), the frequency point of the synchronization grid is the center frequency point of the pattern of the multiple common signals.

[0138] Alternatively, the frequency point of the synchronization grid is the center frequency point of the common signal with the lowest frequency domain position among the multiple common signals. For example, in FIG9 (b), the frequency point of the synchronization grid is the center frequency point of the common signal with the lowest frequency domain position among the multiple common signals.

[0139] Alternatively, the frequency point of the synchronization grid is the center frequency point of the common signal with the highest frequency domain position among the multiple common signals. For example, in FIG9 (c), the frequency point of the synchronization grid is the center frequency point of the common signal with the highest frequency domain position among the multiple common signals.

[0140] Alternatively, the frequency point of the synchronization grid is the center frequency point of the second common signal, the frequency domain starting position of the second common signal, or the frequency domain ending position of the second common signal. For example, in (d) in Figure 9, the frequency point of the synchronization grid is the center frequency point of the second common signal.

[0141] Alternatively, the frequency band of the synchronization grid is the center frequency of the common signal in the middle frequency domain among the multiple common signals. For example, in (e) of Figure 9, the number of common signals is 5, and the frequency of the synchronization grid is the center frequency of the third common signal.

[0142] In combination with the above-mentioned step 700, the base station can send part or all of the common signals among multiple common signals according to the first configuration, and these common signals correspond to the same synchronization grid. Then, the terminal can detect the common signals in the synchronization grid according to the frequency of the synchronization grid. The following only uses the example of the terminal detecting the first common signal among these common signals to illustrate.

[0143] In addition, if the above-mentioned common signals also include a second common signal, the terminal may also detect the second common signal, and then determine the frequency domain position of the second control resource based on the second common signal. For example, the second common signal is an SSB, and the SSB includes an MIB, and the MIB includes a 4-bit CORESET0 indicating the frequency domain position where the DCI of the scheduling SIB1 is received. The MIB also includes Kssb, and then the terminal can determine the starting RB position of CORESET0 based on the Offset indicated by the 4-bit CORESET0 and Kssb.

[0144] Exemplarily, the terminal may determine the frequency domain position of the first control resource based on the frequency domain position of the first common signal and the first configuration in the following manner, but not limited to, manner 1 and manner 2. It can also be understood that if the common signal detected by the terminal is not the second common signal, the terminal cannot determine the frequency domain position of the corresponding control resource based solely on the content carried by the first common signal (i.e., the content carried by the detected common signal). In this case, how to determine the frequency domain position of the control resource corresponding to the detected common signal can refer to the following manner 1 and manner 2.

[0145] Mode 1: The terminal may determine the second offset according to the first offset and the second configuration, and further determine the frequency domain position of the first control resource according to the second offset.

[0146] The second configuration indicates a corresponding relationship between the first offset and the second offset. For example, the second configuration may be predefined by a protocol or notified to the terminal via signaling. For example, the second configuration may be presented in a table, formula, or the like, which is not limited in this application.

[0147] The first offset indicates an offset of a starting frequency domain position of the first common signal relative to a starting frequency domain position of the second common signal. Exemplarily, the terminal may determine the first offset based on the frequency domain position of the first common signal and the frequency domain position of the second common signal. For details on how to determine the first offset, reference may be made to the relevant contents of Figures 11A to 11G below.

[0148] For example, Table 2 shows a possible second configuration. Here, the unit of X may be a subcarrier or RB, and the unit of Y may be a subcarrier or RB. Both X and Y are integers.

[0149] Table 2

[0150] For example, in conjunction with Table 2 above, if the terminal determines that the first offset is X, then according to Table 2, the second offset is Y. If the terminal determines that the first offset is 2X, then according to Table 2, the second offset is 2Y.

[0151] Mode 2: The terminal determines the second offset according to the first offset and the unit offset value, and determines the frequency domain position of the first control resource according to the second offset.

[0152] The first common signal includes a unit offset value. The unit offset value can also be referred to as a frequency domain spacing parameter for control resources corresponding to adjacent common signals. The second offset value is an integer multiple of the unit offset value. For example, 2 times the unit offset value, 3 times the unit offset value, or -2 times the unit offset value. Exemplarily, the first common signal is an SSB, and the MIB in the SSB can indicate the unit offset value.

[0153] For example, the terminal may determine the second offset based on the first offset, the unit offset value, and a third configuration. The third configuration indicates a correspondence between multiples of the unit offset value and the first offset. For example, the third configuration may be predefined by a protocol or notified to the terminal via signaling. For example, the third configuration may be presented in a table, formula, or other form, which is not limited in this application.

[0154] The first offset indicates an offset of a starting frequency domain position of the first common signal relative to a starting frequency domain position of the second common signal. Exemplarily, the terminal may determine the first offset based on the frequency domain position of the first common signal and the frequency domain position of the second common signal. For details on how to determine the first offset, reference may be made to the relevant contents of Figures 11A to 11G below.

[0155] For example, Table 3 shows a possible third configuration.

[0156] Table 3

[0157] Where X can be expressed in units of subcarriers or RBs, and X is an integer. For example, assuming the unit offset value is Y, combined with Table 3 above, if the terminal determines the first offset to be X, then Table 3 shows that the multiple of the unit offset value is 1, and thus the second offset is determined to be Y. If the terminal determines the first offset to be 2X, then Table 3 shows that the multiple of the unit offset value is 2, and thus the second offset is determined to be 2Y. Y can be expressed in units of subcarriers or RBs, and Y is an integer.

[0158] For Methods 1 and 2 above, determining the frequency domain location of the first control resource also depends on the specific meaning of the second offset. The second offset can be predefined by the protocol or indicated by signaling. The following, with reference to the accompanying figures, describes the specific meaning of the second offset and how to determine the frequency domain location of the first control resource based on the second offset.

[0159] A: The second offset is the offset of the starting frequency domain position of the second common signal relative to the starting frequency domain position of the first control resource.

[0160] Exemplarily, as shown in Figure 10A, the terminal can determine the starting frequency domain position of the second common signal based on the first configuration, and determine the second offset through the above-mentioned method 1 or method 2. Furthermore, the terminal can also determine the starting frequency domain position of the first control resource based on the second offset and the starting frequency domain position of the second common signal.

[0161] B: The second offset is the offset of the starting frequency domain position of the second common resource block relative to the starting frequency domain position of the first control resource. The second common resource block is the common resource block where the starting frequency domain position of the second common signal is located.

[0162] Among them, the starting frequency domain position of the second common resource block can be determined according to the frequency domain position of the second common signal and the fourth offset carried by the first common signal, wherein the fourth offset is the offset of the starting frequency domain position of the second common signal relative to the starting frequency domain position of the second common resource block. For example, the first common signal is SSB1, the second common signal is SSB2, and the second common resource block is the CRB where the starting frequency domain position of SSB2 is located, denoted as CRB2. The MIB in SSB1 includes Kssb, which is the fourth offset. Kssb can indicate the offset of the starting frequency domain position of SSB2 relative to the starting frequency domain position of CRB2.

[0163] Exemplarily, as shown in Figure 10B, the terminal can determine the starting frequency domain position of the second common signal according to the first configuration, and determine the starting frequency domain position of the second common resource block according to the starting frequency domain position of the second common signal and the fourth offset carried by the first common signal. Further, the offset of the starting frequency domain position of the first control resource is determined based on the starting frequency domain position of the second common resource block and the second offset.

[0164] C: The second offset is the offset of the starting frequency domain position of the second control resource relative to the starting frequency domain position of the first control resource, wherein the frequency domain position of the second control resource is determined according to the frequency domain position of the second common signal.

[0165] Among them, the second control resource is associated with the second common signal, or the second control resource corresponds to the second common signal. Exemplarily, the starting frequency domain position of the second control resource is determined by the frequency domain position of the second common signal and the fourth offset and the fifth offset carried by the first common signal, wherein the fourth offset is the offset of the starting frequency domain position of the second common signal relative to the starting frequency domain position of the second common resource block. The fifth offset is the offset of the starting frequency domain position of the second common resource block relative to the starting frequency domain position of the second control resource. It can also be understood that the terminal can determine the starting frequency domain position of the second control resource based on the frequency domain position of the second common signal, and the fourth offset and the fifth offset.

[0166] Exemplarily, the terminal can determine the starting frequency domain position of the second common resource block based on the frequency domain position of the second common signal and the fourth offset, and then determine the starting frequency domain position of the second control resource based on the starting frequency domain position of the second common resource block and the fifth offset.

[0167] Alternatively, the terminal may determine the third offset based on the fourth offset and the fifth offset. The third offset is the offset of the starting frequency domain position of the second common signal relative to the starting frequency domain position of the second control resource, and then determine the starting frequency domain position of the second control resource based on the frequency domain position of the second common signal and the third offset.

[0168] For example, the first common signal is SSB1, the second common signal is SSB2, the second control resource is CORESET0 corresponding to SSB2, the second common resource block is the CRB where the starting frequency domain position of SSB2 is located, recorded as CRB2, and the MIB in SSB1 includes Kssb, that is, the fourth offset. Kssb can indicate the offset of the starting frequency domain position of SSB2 relative to the starting frequency domain position of CRB2. The MIB also includes a 4-bit index of CORESET0, and Offset, that is, the fifth offset, is determined based on the 4-bit index of CORESET0. Offset can indicate the offset of the starting frequency domain position of CRB2 relative to the starting frequency domain position of CORESET0 corresponding to SSB2.

[0169] The terminal can determine the starting frequency domain position of SSB2 according to the first configuration, and then determine the starting frequency domain position of CRB2 according to the starting frequency domain position of SSB2 and Kssb (i.e., the fourth offset), and further determine the starting frequency domain position of CORESET0 corresponding to SSB2 according to the starting frequency domain position of CRB2 and Offset (i.e., the fifth offset), that is, the starting frequency domain position of the second control resource.

[0170] Alternatively, the terminal may determine the offset (i.e., the third offset) of the starting frequency domain position of SSB2 relative to the starting frequency domain position of CORESET0 corresponding to SSB2 based on Kssb (i.e., the fourth offset) and Offset (i.e., the fifth offset), and then determine the starting frequency domain position of SSB2 based on the first configuration, and further determine the starting frequency domain position of CORESET0 corresponding to SSB2 based on the starting frequency domain position of SSB2 and the third offset, that is, the starting frequency domain position of the second control resource.

[0171] Exemplarily, as shown in Figure 10C, the terminal can determine the starting frequency domain position of the second common signal based on the first configuration, and determine the starting frequency domain position of the second control resource based on the starting frequency domain position of the second common signal, the fourth offset and the fifth offset carried by the first common signal. Further, the starting frequency domain position of the first control resource is determined based on the starting frequency domain position of the second control resource and the second offset.

[0172] D: The second offset is the offset of the starting frequency domain position of the first common signal relative to the starting frequency domain position of the first control resource.

[0173] Exemplarily, as shown in Figure 10D, the terminal can determine the starting frequency domain position of the first common signal based on the first configuration, or because the terminal receives the first common signal, it can determine the starting frequency domain position of the first common signal, and then the terminal can determine the starting frequency domain position of the first control resource based on the starting frequency domain position of the first common signal and the second offset.

[0174] E: The second offset is the offset of the starting frequency domain position of the first common resource block relative to the starting frequency domain position of the first control resource. The first common resource block is the common resource block where the starting frequency domain position of the first common signal is located.

[0175] For example, as shown in Figure 10E, the terminal can determine the starting frequency domain position of the first common resource block, and then the terminal can determine the starting frequency domain position of the first control resource based on the starting frequency domain position of the first common resource block and the second offset. This application does not limit the specific implementation method of the terminal determining the starting frequency domain position of the first common resource block.

[0176] F: the second offset is the sum of the offset of the starting frequency domain position of the first common signal relative to the starting frequency domain position of the first control resource and the third offset.

[0177] The third offset is an offset of the starting frequency domain position of the second common signal relative to the starting frequency domain position of the second control resource, wherein the second control resource is associated with the second common signal. The third offset can be determined based on the fourth offset and the fifth offset. For specific calculations of the third offset, please refer to the relevant description in C above.

[0178] Exemplarily, as shown in Figure 10F, the terminal can determine the offset of the starting frequency domain position of the first common signal relative to the starting frequency domain position of the first control resource based on the second offset and the third offset. Further, the terminal determines the starting frequency domain position of the first common signal according to the first configuration, or because the terminal receives the first common signal, it can determine the starting frequency domain position of the first common signal, and then determine the starting frequency domain position of the first control resource based on the starting frequency domain position of the first common signal and the offset of the starting frequency domain position of the first common signal relative to the starting frequency domain position of the first control resource.

[0179] G: The second offset is the sum of the offset of the starting frequency domain position of the first common resource block relative to the starting frequency domain position of the first control resource and the third offset.

[0180] The third offset is an offset of the starting frequency domain position of the second common signal relative to the starting frequency domain position of the second control resource, wherein the second control resource is associated with the second common signal. The third offset can be determined based on the fourth offset and the fifth offset. For specific calculations of the third offset, please refer to the relevant description in C above.

[0181] Exemplarily, as shown in FIG10G , the terminal can determine the offset of the starting frequency domain position of the first common resource block relative to the starting frequency domain position of the first control resource based on the second offset and the third offset. Further, the terminal can determine the starting frequency domain position of the first common resource block, and then the terminal can determine the starting frequency domain position of the first control resource based on the starting frequency domain position of the first common resource block and the offset of the starting frequency domain position of the first common resource block relative to the starting frequency domain position of the first control resource. This application does not limit the specific implementation method of the terminal determining the starting frequency domain position of the first common resource block.

[0182] With respect to Figures 10A to 10G above, the frequency domain width of the first control resource may also be indicated by the first common signal. For example, the first common signal is SSB, the first control resource is CORESET0 corresponding to the first common signal, and the MIB in the SSB includes a 4-bit index of CORESET0. According to the index of CORESET0, the corresponding table is searched, for example, Table 1, and it can be determined The value of , that is, determines the frequency domain width of CORESET0.

[0183] It is understandable that the specific meaning of the above-mentioned second offset is only an example and is not intended to limit the present application.

[0184] In one possible implementation, the multiple common signals indicated by the first configuration have independent indexes, where the index of the common signal can also be referred to as the frequency domain index, number, or identifier of the common signal. Taking the index as an example, several methods for determining the common signal index are given below through methods a to d. The terminal can determine the first offset based on the index of the first common signal and the index of the second common signal. The following specifically describes how the terminal determines the first offset in conjunction with possible methods a to d for the indexes of multiple common signals.

[0185] Method a: The frequency domain positions corresponding to any two of the multiple common signals do not have the same frequency domain unit, that is, the frequency domain positions corresponding to any two of the multiple common signals do not overlap. The indexes corresponding to the multiple common signals are determined in ascending order based on the frequency domain positions corresponding to the multiple common signals.

[0186] In one possible implementation, any two common signals with adjacent indexes are separated by M frequency domain units, where M is a positive integer. That is, any two common signals with adjacent frequency domain positions among the multiple common signals are separated by the same number of frequency domain units. The first offset is the product of the difference between the index of the first common signal and the index of the second common signal and M.

[0187] The indexes corresponding to the five common signals shown in Figure 11A are determined in order from low to high according to the frequency domain positions corresponding to the five common signals, wherein i is an integer, and any two common signals with adjacent frequency domain positions are separated by M frequency domain units. The frequency domain position of the second common signal is only an example and is not limited to this application. Assuming that the index of the second common signal is i, if the index of the common signal received by the terminal is i+2, the first offset is (i+2-i)*M=2M, if the index of the common signal received by the terminal is i+1, the first offset is (i+1-i)*M=M, if the index of the common signal received by the terminal is i-1, the first offset is (i-1-i)*M=-M, if the index of the common signal received by the terminal is i-2, the first offset is (i-2-i)*M=-2M.

[0188] In one possible implementation, the second common signal is spaced apart from common signals with adjacent indexes by K1 frequency domain units, and any two common signals with adjacent indexes other than the second common signal are spaced apart by K2 frequency domain units, where K1 and K2 are positive integers, that is, the number of frequency domain units between any two common signals with adjacent frequency domain positions in multiple common signals is not exactly the same.

[0189] Exemplarily, the number of frequency domain units included in the second common signal may be greater than the number of frequency domain units included in other common signals. For example, the second common signal may include PBCH, PSS and SSS, while other common signals may include PBCH.

[0190] If the index of the first common signal is greater than the index of the second common signal, the first offset = K1 + (index of the first common signal - index of the second common signal - 1) * K2; if the index of the first common signal is less than the index of the second common signal, the first offset = (index of the first common signal - index of the second common signal) * K2.

[0191] The indexes corresponding to the five common signals shown in Figure 11B are determined in order from low to high according to the frequency domain positions corresponding to the five common signals, where i is an integer, the second common signal and the common signals with adjacent indexes are separated by K1 frequency domain units, and any two common signals with adjacent indexes other than the second common signal are separated by K2 frequency domain units. The frequency domain position of the second common signal is for example only and is not a limitation of this application. In which, assuming that the index of the second common signal is i, if the index of the common signal received by the terminal is i+2, the first offset is K1+(i+2-i-1)*K2=K1+K2, if the index of the common signal received by the terminal is i+1, the first offset is K1+(i+1-i-1)*K2=K1, if the index of the common signal received by the terminal is i-1, the first offset is (i-1-i)*K2=-K2, if the index of the common signal received by the terminal is i-2, the first offset is (i-2-i)*K2=-2K2.

[0192] Method b: The frequency domain resources corresponding to any two of the multiple common signals do not share the same frequency domain unit. In other words, the frequency domain positions occupied by any two of the multiple common signals do not overlap. The indexes corresponding to the multiple common signals are determined in descending order based on the frequency domain positions corresponding to the multiple common signals.

[0193] In one possible implementation, any two common signals with adjacent indexes are separated by M frequency domain units, where M is a positive integer. That is, any two common signals with adjacent frequency domain positions have the same number of frequency domain units. The first offset is the product of the difference between the index of the second common signal and the index of the first common signal and M.

[0194] The indexes corresponding to the five common signals shown in FIG11C are determined in descending order according to the frequency domain positions corresponding to the five common signals, wherein i is an integer, and any two common signals with adjacent frequency domain positions are separated by M frequency domain units. The frequency domain position of the second common signal is only an example and is not limited to this application. Assuming that the index of the second common signal is i, if the index of the common signal received by the terminal is i-2, the first offset is [i-(i-2)]*M=2M, if the index of the common signal received by the terminal is i-1, the first offset is [i-(i-1)]*M=M, if the index of the common signal received by the terminal is i+1, the first offset is [i-(i+1)]*M=-M, if the index of the common signal received by the terminal is i+2, the first offset is [i-(i+2)]*M=-2M.

[0195] In another possible implementation, the second common signal is spaced apart from common signals with adjacent indexes by K1 frequency domain units, and any two common signals with adjacent indexes other than the second common signal are spaced apart by K2 frequency domain units, where K1 and K2 are positive integers, that is, the number of frequency domain units between any two common signals with adjacent frequency domain positions in multiple common signals is not exactly the same.

[0196] If the index of the first common signal is greater than the index of the second common signal, the first offset = K1 + (index of the second common signal - index of the first common signal - 1) * K2; if the index of the first common signal is less than the index of the second common signal, the first offset = (index of the second common signal - index of the first common signal) * K2.

[0197] The indexes corresponding to the five common signals shown in Figure 11D are determined in descending order according to the frequency domain positions corresponding to the five common signals, where i is an integer, the second common signal and the common signals with adjacent indexes are separated by K1 frequency domain units, and any two common signals with adjacent indexes other than the second common signal are separated by K2 frequency domain units. The frequency domain position of the second common signal is for example only and is not a limitation of this application. In which, assuming that the index of the second common signal is i, if the index of the common signal received by the terminal is i-2, the first offset is K1+[i-(i-2)-1]*K2=K1+K2, if the index of the common signal received by the terminal is i-1, the first offset is K1+[i-(i-1)-1]*K2=K1, if the index of the common signal received by the terminal is i+1, the first offset is [i-(i+1)]*K2=-K2, if the index of the common signal received by the terminal is i+2, the first offset is [i-(i+2)]*K2=-2K2.

[0198] Method c: If there are common signals with the same frequency domain position among the multiple common signals, the multiple common signals are indexed in the order of time domain position from front to back and then frequency domain position from low to high.

[0199] The indexes of the multiple common signals shown in FIG. 11E are determined in the order of time domain positions from front to back and then frequency domain positions from low to high.

[0200] For the above method c, in a possible implementation method, the terminal can determine the first frequency domain indication value according to the index of the first common signal, determine the second frequency domain indication value according to the index of the second common signal, and further determine the first offset according to the difference between the two frequency domain indication values.

[0201] For example, Indicates rounding down.

[0202] Exemplarily, in at least one common signal transmitted at the same time, any two common signals at adjacent frequency domain positions have the same number of frequency domain units spaced therebetween, and the number of frequency domain units spaced therebetween is M. The first offset is the product of M and a difference between the first frequency domain indication value and the second frequency domain indication value.

[0203] As shown in a of FIG. 11E , assuming that the index of the second common signal is 0, The index of the first common signal is 2, Among the three common signals sent at the same time, if the number of frequency domain units between any two adjacent common signals is the same and the number of frequency domain units between them is M, then the first offset is (1-0)*M=M. Assuming that the index of the second common signal is 0, The index of the first common signal is 3, Among the three common signals at the same sending time, if the number of frequency domain units between any two common signals with adjacent frequency domain positions is the same and the number of frequency domain units between them is M, then the first offset is (1-0)*M=M.

[0204] Assume that the index of the second common signal is 4, The index of the first common signal is 2, Among the three common signals at the same sending time, if the number of frequency domain units between any two common signals with adjacent frequency domain positions is the same and the number of frequency domain units between them is M, then the first offset is (1-2)*M=-M.

[0205] As shown in b of FIG. 11E , assuming that the index of the second common signal is 0, The index of the first common signal is 2, Among the three common signals sent at the same time, if the number of frequency domain units between any two adjacent common signals is the same and the number of frequency domain units between them is M, then the first offset is (0-0)*M=0. Assuming that the index of the second common signal is 0, The index of the first common signal is 8, Among the three common signals at the same sending time, the number of frequency domain units between any two common signals with adjacent frequency domain positions is the same, and the number of frequency domain units between them is M, then the first offset is (2-0)*M=2M.

[0206] Mode d: If there is a common signal with the same frequency domain position among multiple common signals, the multiple common signals are indexed in the order of frequency domain position from low to high and then time domain position from front to back.

[0207] The indexes of the multiple common signals shown in FIG11F are determined in the order of time domain positions from front to back and then frequency domain positions from low to high.

[0208] For the above method d, in a possible implementation method, the terminal can determine the first frequency domain indication value according to the index of the first common signal, determine the second frequency domain indication value according to the index of the second common signal, and further determine the first offset according to the difference between the two frequency domain indication values.

[0209] Exemplarily, the frequency domain indication value=(index of the common signal) mod (the number of common signals sent at the same sending time).

[0210] Exemplarily, in at least one common signal transmitted at the same time, any two common signals at adjacent frequency domain positions have the same number of frequency domain units spaced therebetween, and the number of frequency domain units spaced therebetween is M. The first offset is the product of M and a difference between the first frequency domain indication value and the second frequency domain indication value.

[0211] As shown in a of Figure 11F, assuming that the index of the second common signal is 3, the second frequency domain indication value is =3mod3=0, the index of the first common signal is 2, the first frequency domain indication value is =2mod3=2, and the number of frequency domain units between any two common signals at adjacent frequency domain positions in the three common signals at the same transmission time is the same, and the number of frequency domain units between them is M, then the first offset is (2-0)*M=2M. Assuming that the index of the second common signal is 1, the second frequency domain indication value is =1mod3=1, the index of the first common signal is 3, the first frequency domain indication value is =3mod3=0, and the number of frequency domain units between any two common signals at adjacent frequency domain positions in the three common signals at the same transmission time is the same, and the number of frequency domain units between them is M, then the first offset is (0-1)*M=-M.

[0212] As shown in b in Figure 11F, assuming that the index of the second common signal is 0, the second frequency domain indication value is =3mod2=1, the index of the first common signal is 2, the first frequency domain indication value is =2mod2=0, and the number of frequency domain units between any two common signals with adjacent frequency domain positions in the three common signals at the same sending time is the same, and the number of frequency domain units between the intervals is M, then the first offset is (0-1)*M=-M.

[0213] It is understandable that the above-mentioned methods a to d are merely examples and are not intended to limit the present application.

[0214] For example, Figure 11G is similar to Figure 11F, and each common signal in a plurality of common signals has two indexes, namely, it is composed of a time domain index and a frequency domain index. Exemplarily, in at least one common signal at the same sending moment, the number of frequency domain units between any two common signals at adjacent frequency domain positions is the same, and the number of frequency domain units between the intervals is M. The first offset is the product of the difference between the frequency domain index of the first common signal and the frequency domain index of the second common signal and M. For example, in Figure 11G, assuming that the index of the second common signal is (0,0), wherein the frequency domain index of the second common signal is 0 and the time domain index is also 0, the index of the first common signal is (2,1), the frequency domain index of the first common signal is 2 and the time domain index is also 1, and in the three common signals at the same sending moment, the number of frequency domain units between any two common signals at adjacent frequency domain positions is the same, and the number of frequency domain units between the intervals is M, then the first offset is (2-0)*M=2M.

[0215] In one possible implementation, the base station may further transmit a third common signal, wherein the frequency domain position of the first common signal does not overlap with the frequency domain position of the third common signal. The time domain position of the first common signal at least partially overlaps with the time domain position of the second common signal. The third common signal is associated with a third control resource. The frequency domain position of the third control resource may be the same as the frequency domain position of the first control resource, and the time domain position of the third control resource does not overlap with the time domain position of the first control resource.

[0216] Among them, the third common signal and the first common signal satisfy the following relationship: X1 mod W = X2 mod W. Among them, the frequency domain index / frequency domain indication value corresponding to the third common signal is recorded as X1, the frequency domain index / frequency domain indication value corresponding to the first common signal is recorded as X2, W is a positive integer, and W is a parameter predefined by the protocol or a parameter configured on the base station side. In one possible implementation, W is a subset of common signals sent by frequency division. The subset contains one or more common signals, and the control resources corresponding to these common signals are different, which can improve the coverage performance of the control information carried by different control resources and improve the success rate of receiving the control information. Exemplarily, the first common signal can carry the value of W.

[0217] For example, as shown in Figure 12, if X1=0, X2=2, W=2, then X1 mod W=X2 mod W=0, then the frequency domain position of the third control resource is the same as the frequency domain position of the first control resource, and the time domain position of the third control resource and the time domain position of the first control resource do not overlap.

[0218] Using the above method, the terminal can determine the frequency domain position of the first control resource based on the frequency domain position of the first public signal and the frequency domain position of the second public signal indicated by the first configuration. That is, when the terminal device receives any public signal, it can obtain the correct frequency domain position of the control resource based on the first configuration and the detected frequency domain position of the public signal, and the specific content carried by different public signals can be the same. The terminal can combine the specific content carried in the public signals detected in multiple periods for reception, which can improve the coverage performance / reception performance of the public signal.

[0219] It is understood that in order to implement the functions in the above embodiments, the terminal and base station include hardware structures and / or software modules corresponding to the execution of each function. Those skilled in the art should readily appreciate that, in conjunction with the units and method steps of the various examples described in the embodiments disclosed in this application, this application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in hardware or in a computer software-driven hardware manner depends on the specific application scenario and design constraints of the technical solution.

[0220] Figures 13 and 14 are schematic diagrams of possible communication devices provided in embodiments of the present application. These communication devices can be used to implement the functions of the terminal or base station in the above method embodiments, and thus can also achieve the beneficial effects of the above method embodiments.

[0221] As shown in Figure 13, a communication device 1300 includes a processing unit 1310 and a transceiver unit 1320. The communication device 1300 is used to implement the terminal or base station in the above method embodiment.

[0222] When the communication device 1300 is used to implement the functions of the terminal in the method embodiment shown in FIG7 :

[0223] The transceiver unit 1320 is used to receive a first common signal; the processing unit 1310 is used to determine the frequency domain position of a first control resource based on the frequency domain position of the first common signal and a first configuration, wherein the first configuration indicates the frequency domain position of the second common signal, the frequency domain position of the first common signal is different from the frequency domain position of the second common signal, and the first control resource is associated with the first common signal.

[0224] In one possible design, the first configuration indicates frequency domain positions of multiple common signals, where the frequency domain positions of the multiple common signals include the frequency domain position of the first common signal and the frequency domain position of the second common signal.

[0225] In one possible design, the processing unit 1310 is used to determine the second offset based on the first offset and the second configuration when determining the frequency domain position of the first control resource based on the frequency domain position of the first common signal and the first configuration, wherein the second configuration indicates the correspondence between the first offset and the second offset; the first offset indicates the offset of the starting frequency domain position of the first common signal relative to the starting frequency domain position of the second common signal; the first offset is determined according to the first configuration; and the frequency domain position of the first control resource is determined according to the second offset.

[0226] In one possible design, the first common signal includes a unit offset value; the processing unit 1310 is used to determine a second offset based on the first offset and the unit offset value when determining the frequency domain position of the first control resource based on the frequency domain position of the first common signal and the first configuration, and determine the frequency domain position of the first control resource based on the second offset, wherein the first offset indicates the offset of the starting frequency domain position of the first common signal relative to the starting frequency domain position of the second common signal, and the first offset is determined according to the first configuration.

[0227] In one possible design, the second offset is the offset of the starting frequency domain position of the second common signal relative to the starting frequency domain position of the first control resource.

[0228] In one possible design, the second offset is the offset of the starting frequency domain position of the second common resource block relative to the starting frequency domain position of the first control resource, and the second common resource block is the common resource block where the starting frequency domain position of the second common signal is located.

[0229] In one possible design, the second offset is the offset of the starting frequency domain position of the second control resource relative to the starting frequency domain position of the first control resource, wherein the frequency domain position of the second control resource is determined according to the frequency domain position of the second common signal.

[0230] In one possible design, the second offset is the offset of the starting frequency domain position of the first common signal relative to the starting frequency domain position of the first control resource.

[0231] In one possible design, the second offset is the offset of the starting frequency domain position of the first common resource block relative to the starting frequency domain position of the first control resource, and the first common resource block is the common resource block where the starting frequency domain position of the first common signal is located.

[0232] In one possible design, the second offset is the sum of the offset of the starting frequency domain position of the first common signal relative to the starting frequency domain position of the first control resource and a third offset, wherein the third offset is the offset of the starting frequency domain position of the second common signal relative to the starting frequency domain position of the second control resource, wherein the second control resource is associated with the second common signal.

[0233] In one possible design, the center frequencies of some or all of the multiple common signals are located in the same synchronization grid. In other words, the center frequencies of some or all of the multiple common signals are located in the same frequency position as a synchronization grid.

[0234] In one possible design, the frequency point of the synchronization grid is the center frequency point of the transmission pattern composed of the multiple common signals, or the frequency point of the synchronization grid is the center frequency point of the common signal with the lowest frequency domain position among the multiple common signals, or the frequency point of the synchronization grid is the center frequency point of the common signal with the highest frequency domain position among the multiple common signals, or the frequency point of the synchronization grid is the center frequency point of the second common signal, the frequency domain starting position of the second common signal, or the frequency domain ending position of the second common signal.

[0235] In one possible design, the time domain position of the first common signal and the time domain position of the second common signal at least partially overlap.

[0236] When the communication device 1300 is used to implement the functions of the base station in the method embodiment shown in FIG7 :

[0237] The transceiver unit 1320 is used to send and receive information; the processing unit 1310 is used to send a first common signal through the transceiver unit 1320; the frequency domain position of the first control resource is determined according to the frequency domain position of the first common signal and the first configuration, wherein the first configuration indicates the frequency domain position of the second common signal, the frequency domain position of the first common signal is different from the frequency domain position of the second common signal, and the first control resource is associated with the first common signal.

[0238] In one possible design, the transceiver unit 1320 is used to send control information on the first control resource.

[0239] In one possible design, the transceiver unit 1320 is used to send the second common signal.

[0240] In one possible design, the first configuration indicates frequency domain positions of multiple common signals, where the frequency domain positions of the multiple common signals include the frequency domain position of the first common signal and the frequency domain position of the second common signal. The transceiver unit 1320 is configured to send the first common signal according to the first configuration when sending the first common signal.

[0241] In one possible design, the first common signal includes a unit offset value.

[0242] In one possible design, the center frequencies of some or all of the multiple common signals are located in the same synchronization grid. In other words, the center frequencies of some or all of the multiple common signals are located in the same frequency position as a synchronization grid.

[0243] In one possible design, the frequency point of the synchronization grid is the center frequency point of the transmission pattern composed of the multiple common signals, or the frequency point of the synchronization grid is the center frequency point of the common signal with the lowest frequency domain position among the multiple common signals, or the frequency point of the synchronization grid is the center frequency point of the common signal with the highest frequency domain position among the multiple common signals, or the frequency point of the synchronization grid is the center frequency point of the second common signal, the frequency domain starting position of the second common signal, or the frequency domain ending position of the second common signal.

[0244] In one possible design, the time domain position of the first common signal and the time domain position of the second common signal at least partially overlap.

[0245] A more detailed description of the processing unit 1310 and the transceiver unit 1320 can be directly obtained by referring to the relevant description in the above method embodiment, and will not be repeated here.

[0246] As shown in Figure 14, communication device 1400 includes a processor 1410 and an interface circuit 1420. Processor 1410 and interface circuit 1420 are coupled to each other. It is understood that interface circuit 1420 can be a transceiver or an input / output interface. Optionally, communication device 1400 may also include a memory 1430 for storing instructions executed by processor 1410, input data required by processor 1410 to execute instructions, or data generated after processor 1410 executes instructions.

[0247] When the communication device 1400 is used to implement the method shown in FIG. 7 , the processor 1410 is used to implement the functions of the processing unit 1310 , and the interface circuit 1420 is used to implement the functions of the transceiver unit 1320 .

[0248] It is understood that the processor in the embodiments of the present application may be a central processing unit (CPU), or may be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. The general-purpose processor may be a microprocessor or any conventional processor.

[0249] In this application, another example of a device is provided, wherein the notification device includes at least one processor and at least one memory, the at least one processor and the at least one memory being coupled, the at least one memory being used to store instructions. When the instructions are executed by the at least one processor, the communication device performs the method in the above-described embodiment. Taking the example of a communication device including a processor and a memory, as shown in FIG14 , a communication device 1400 includes a processor 1410 and a memory 1430. The processor 1410 and the memory 1430 are coupled, and the memory 1430 stores instructions. When the instructions stored in the memory 1430 are executed by the processor 1410, the communication device 1400 performs the method performed by the terminal or base station in the above-described embodiment.

[0250] The method steps in the embodiments of the present application can be implemented in hardware or in software instructions that can be executed by a processor. The software instructions can be composed of corresponding software modules, and the software modules can be stored in random access memory, flash memory, read-only memory, programmable read-only memory, erasable programmable read-only memory, electrically erasable programmable read-only memory, registers, hard disk, mobile hard disk, CD-ROM or any other form of storage medium well known in the art. An exemplary storage medium is coupled to the processor so that the processor can read information from the storage medium and write information to the storage medium. The storage medium can also be an integral part of the processor. The processor and storage medium can be located in an ASIC. In addition, the ASIC can be located in the above-mentioned terminal or base station. The processor and storage medium can also exist in the terminal or base station as discrete components.

[0251] In the above embodiments, all or part of the embodiments may be implemented using software, hardware, firmware, or any combination thereof. When implemented using software, all or part of the embodiments may be implemented in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are performed in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user device, or other programmable device. The computer program or instructions may be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another. For example, the computer program or instructions may be transferred from one website, computer, server, or data center to another website, computer, server, or data center via wired or wireless means. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center that integrates one or more available media. The available medium may be a magnetic medium, such as a floppy disk, hard disk, or magnetic tape; an optical medium, such as a digital video disk; or a semiconductor medium, such as a solid-state drive. The computer-readable storage medium may be a volatile or nonvolatile storage medium, or may include both volatile and nonvolatile types of storage media.

[0252] In the various embodiments of the present application, unless otherwise specified or there is a logical conflict, the terms and / or descriptions between different embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationships.

[0253] In this application, "at least one" means one or more, and "more" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. In the text description of this application, the character " / " generally indicates that the previous and next associated objects are in an "or" relationship; in the formula of this application, the character " / " indicates that the previous and next associated objects are in a "division" relationship. "Including at least one of A, B and C" can mean: including A; including B; including C; including A and B; including A and C; including B and C; including A, B and C.

[0254] It is understood that the various numbers used in the embodiments of this application are merely for ease of description and are not intended to limit the scope of the embodiments of this application. The order of the sequence numbers of the above-mentioned processes does not necessarily imply a specific order of execution; the order of execution of the processes should be determined by their functions and inherent logic.

Claims

1. A communication method, characterized in that, The method includes: Receiving a first common signal; Determining a frequency-domain position of a first control resource according to a frequency-domain position of the first common signal and a first configuration, where the first configuration indicates a frequency-domain position of a second common signal, the frequency-domain position of the first common signal is different from the frequency-domain position of the second common signal, and the first control resource is associated with the first common signal.

2. The method according to claim 1, wherein The first configuration indicates frequency-domain positions of a plurality of common signals, and the frequency-domain positions of the plurality of common signals include the frequency-domain position of the first common signal and the frequency-domain position of the second common signal.

3. The method according to claim 1 or 2, characterized in that, The determining a frequency-domain position of a first control resource according to a frequency-domain position of the first common signal and a first configuration includes: Determining a second offset according to a first offset and a second configuration, where the second configuration indicates a correspondence between the first offset and the second offset; the first offset indicates an offset of a starting frequency-domain position of the first common signal relative to a starting frequency-domain position of the second common signal; and the first offset is determined according to the first configuration; Determining the frequency-domain position of the first control resource according to the second offset.

4. The method according to claim 1 or 2, characterized in that, The first common signal includes a unit offset value; The determining a frequency-domain position of a first control resource according to a frequency-domain position of the first common signal and a first configuration includes: Determining a second offset according to the first offset and the unit offset value; The first offset indicates an offset of a starting frequency-domain position of the first common signal relative to a starting frequency-domain position of the second common signal; and the first offset is determined according to the first configuration; Determining the frequency-domain position of the first control resource according to the second offset.

5. The method according to claim 3 or 4, characterized in that, The second offset is an offset of a starting frequency-domain position of the second common signal relative to a starting frequency-domain position of the first control resource.

6. The method according to claim 3 or 4, characterized in that The second offset is an offset of a starting frequency-domain position of a second common resource block relative to a starting frequency-domain position of the first control resource, where the second common resource block is a common resource block where the starting frequency-domain position of the second common signal is located.

7. The method according to claim 3 or 4, characterized in that, The second offset is an offset of a starting frequency-domain position of a second control resource relative to a starting frequency-domain position of the first control resource, where the frequency-domain position of the second control resource is determined according to the frequency-domain position of the second common signal.

8. The method according to claim 3 or 4, characterized in that, The second offset is an offset of a starting frequency-domain position of the first common signal relative to a starting frequency-domain position of the first control resource.

9. The method according to claim 3 or 4, characterized in that, The second offset is an offset of a starting frequency-domain position of a first common resource block relative to a starting frequency-domain position of the first control resource, where the first common resource block is a common resource block where the starting frequency-domain position of the first common signal is located.

10. The method according to claim 3 or 4, characterized in that, The second offset is a sum of an offset of a starting frequency-domain position of the first common signal relative to a starting frequency-domain position of the first control resource and a third offset, where the third offset is an offset of a starting frequency-domain position of the second common signal relative to a starting frequency-domain position of a second control resource, and the second control resource is associated with the second common signal.

11. The method according to any one of claims 2-10, characterized in that, Some or all of the center frequencies of the multiple common signals are located in the same synchronization grid.

12. The method according to any one of claims 2-11, characterized in that, The frequency of the synchronization grid is the center frequency of the transmission pattern formed by the multiple common signals, or the frequency of the synchronization grid is the center frequency of the common signal with the lowest frequency domain position among the multiple common signals, or the frequency of the synchronization grid is the center frequency of the common signal with the highest frequency domain position among the multiple common signals, or the frequency of the synchronization grid is the center frequency of the second common signal, the start position of the frequency domain of the second common signal, or the end position of the frequency domain of the second common signal.

13. The method according to any one of claims 1 to 12, characterized in that, There is at least partial overlap between the time domain positions of the first common signal and the second common signal.

14. A communication method, characterized in that, The method includes: Transmitting a first common signal; Determining the frequency domain position of a first control resource according to the frequency domain position of the first common signal and a first configuration, where the first configuration indicates the frequency domain position of a second common signal, the frequency domain position of the first common signal is different from the frequency domain position of the second common signal, and the first control resource is associated with the first common signal.

15. The method according to claim 14, wherein It further includes: Transmitting control information on the first control resource.

16. The method according to claim 14 or 15, characterized in that, It further includes: Transmitting the second common signal.

17. The method according to any one of claims 14-16, characterized in that, The first configuration indicates the frequency domain positions of multiple common signals, and the frequency domain positions of the multiple common signals include the frequency domain position of the first common signal and the frequency domain position of the second common signal; Transmitting the first common signal includes: Transmitting the first common signal according to the first configuration.

18. The method according to any one of claims 14-17, characterized in that, The first common signal includes a unit offset value.

19. The method according to claim 17 or 18, characterized in that, Some or all of the center frequencies of the multiple common signals are located in the same synchronization grid.

20. The method according to any one of claims 17-19, characterized in that, The frequency of the synchronization grid is the center frequency of the transmission pattern formed by the multiple common signals, or the frequency of the synchronization grid is the center frequency of the common signal with the lowest frequency domain position among the multiple common signals, or the frequency of the synchronization grid is the center frequency of the common signal with the highest frequency domain position among the multiple common signals, or the frequency of the synchronization grid is the center frequency of the second common signal, the start position of the frequency domain of the second common signal, or the end position of the frequency domain of the second common signal.

21. The method according to any one of claims 14-20, characterized in that, There is at least partial overlap between the time domain positions of the first common signal and the second common signal.

22. A communication device, characterized in that, It includes a unit or module for executing the method according to any one of claims 1 to 21.

23. A communication device, characterized in that, The communication device includes at least one processor; the at least one processor is used to execute the method according to any one of claims 1 to 21.

24. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a program, and when the program runs on the device, the device is caused to execute the method according to any one of claims 1 to 21.

25. A computer program product, characterized in that, The computer program product includes a program or instruction, and when the program or instruction is executed by the device, the device is caused to execute the method according to any one of claims 1 to 21.

26. A communication system, characterized in that, The communication system includes a terminal device and an access network device. The access network device is used to send a first common signal. The terminal device determines the frequency-domain position of a first control resource according to the frequency-domain position of the first common signal and a first configuration. The first control resource is associated with the first common signal. The first configuration indicates the frequency-domain position of a second common signal, and the frequency-domain position of the first common signal is different from that of the second common signal.

27. The communication system according to claim 26, wherein The access network device is used to send control information on the first control resource.

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