A wireless communication method, a communication device and a communication system

Abstract

Embodiments of the present application provide a wireless communication method, a communication device and a communication system. In the method, a terminal determines a first index and a second index of a SSB in a first set according to a detected SSB, and then determines a resource of the SSB. Since one SSB can correspond to one or more resources, and different resources can be time division multiplexed, one SSB has multiple transmission opportunities. Since each SSB corresponds to one beam transmission direction, the transmission opportunity of the SSB corresponding to a certain beam transmission direction can be flexibly adjusted. When transmitting multiple SSBs in a set, the transmission order of each SSB corresponding to different beam transmission directions can be determined according to the service requirement, and then the resources occupied by each SSB are determined. The method can realize flexible transmission of multiple SSBs in a set on different beams, can improve the possibility that the SSB transmission is detected by the terminal, and thus can reduce resource waste.

Description

Technical Field

[0001] This application relates to the field of wireless communication technology, specifically to a wireless communication method, communication device, and communication system. Background Technology

[0002] Compared to the fourth-generation (4G) long-term evolution (LTE) system, the fifth-generation (5G) new radio (NR) system offers more flexibility in system design, including basic parameters, frame structure, and channel time and frequency resource design, which can better support forward compatibility and scalability. However, it still lacks flexibility in the design of common signals. Summary of the Invention

[0003] This application provides a wireless communication method, communication device, and communication system to enable flexible transmission of common signals on different beams.

[0004] The embodiments of this application can be implemented through the following technical solutions:

[0005] In a first aspect, embodiments of this application provide a wireless communication method, which can be executed by a terminal or a component (such as a chip, device, etc.) for the terminal. The method includes: detecting a common signal; determining a first index and a second index of the first common signal in a first set based on the detected first common signal, the first set including multiple common signals, the multiple common signals including the first common signal, the first common signal including a synchronization signal; the first index corresponding to multiple resources, the second index indicating one of the multiple resources, the resource including time-domain resources and / or frequency-domain resources; determining the resource of the first common signal based on the first index and the second index, or based on the second index.

[0006] Based on the above scheme, the terminal determines the first index and second index of the first common signal in the first set according to the detected first common signal, and further determines the resources of the first common signal. In this method, a common signal can correspond to one or more resources, and different resources can be time-division multiplexed, so a common signal has multiple transmission opportunities. Furthermore, since each common signal corresponds to a beam transmission direction, the transmission opportunity of the common signal corresponding to a certain beam transmission direction can be flexibly adjusted. When transmitting multiple common signals in a set, the transmission order of each common signal corresponding to different beam transmission directions can be determined according to service requirements, thereby determining the resources occupied by each common signal. This method enables flexible transmission of multiple common signals in a set on different beams, increasing the likelihood of the common signal being detected by the terminal and reducing resource waste.

[0007] In one possible implementation, the first index or the second index is determined according to a first grouping rule; wherein the common signals in the first set are divided into at least one group according to the first grouping rule, and each of the at least one group corresponds to a resource set, the resource set including at least one resource from a plurality of resources corresponding to the first index. The resource sets corresponding to different groups may be the same or different.

[0008] In one possible implementation, the first grouping rule corresponding to the first set is determined from multiple candidate grouping rules based on the sequence of the synchronization signal; or, the first grouping rule corresponding to the first set is determined from multiple candidate grouping rules based on the number of common signals within a group corresponding to the first set; or, the first grouping rule corresponding to the first set is determined from multiple candidate grouping rules based on the time-division duplex configuration.

[0009] In one possible implementation, the first index is determined based on the sequence of the synchronization signal.

[0010] In one possible implementation, the first index is determined based on the first channel corresponding to the first common signal. The first channel is a broadcast channel, a channel carrying system information, or a control channel, and the control channel is used to schedule the channel carrying system information.

[0011] In one possible implementation, the first index is determined based on one or more of the following information corresponding to the first channel: information indicating the first index, the scrambling code of the first channel, and the DMRS sequence of the first channel.

[0012] Using the above method, the first index of the first common signal in the first set can be flexibly determined.

[0013] In one possible implementation, the second index is determined based on the sequence of the synchronization signal.

[0014] In one possible implementation, the second index is determined based on the first channel corresponding to the first common signal, wherein the first channel is a broadcast channel, a channel carrying system information, or a control channel, and the control channel is used to schedule the channel carrying system information.

[0015] In one possible implementation, the second index is determined based on one or more of the following information corresponding to the first channel: information indicating the second index, the scrambling code of the first channel, and the DMRS sequence of the first channel.

[0016] The second index of the first common signal can be flexibly determined using the above method.

[0017] In one possible implementation, the resources of common signals other than the first common signal in the first set are determined based on the resources of the first common signal and the first set.

[0018] In one possible implementation, the resources of the second common signal are determined according to the first index or the second index; the second common signal is received according to the resources of the second common signal; wherein the second common signal includes a control channel or a channel carrying system information, the control channel being used to schedule the channel carrying system information.

[0019] In one possible implementation, RRM measurement is performed based on the first common signal to obtain the RRM measurement result corresponding to the first common signal, and the RRM measurement result is identified by the first index; the RRM measurement result corresponding to the first common signal is sent to the wireless access network device.

[0020] Secondly, embodiments of this application provide a wireless communication method, which can be executed by a wireless access network device or a component (such as a chip, device, etc.) for a wireless access network device. The method includes: acquiring a first set, the first set including a plurality of common signals, the plurality of common signals including a first common signal, the first common signal including a synchronization signal; the index of the first common signal in the first set being a first index, the first index corresponding to a plurality of resources, a second index of the first common signal used to indicate one of the plurality of resources, the resource including time-domain resources and / or frequency-domain resources; and transmitting the common signal in the first set to a terminal.

[0021] In one possible implementation, the first set corresponds to a first grouping rule, which is used to determine the first index or the second index; wherein, the common signals in the first set are divided into at least one group according to the first grouping rule, and each of the at least one group corresponds to a resource set, which includes at least one resource among a plurality of resources corresponding to the first index.

[0022] In one possible implementation, the sequence of the synchronization signal corresponds to the first grouping rule; or, the number of common signals within a group corresponding to the first set corresponds to the first grouping rule; or, the time-division duplex configuration corresponds to the first grouping rule.

[0023] In one possible implementation, the sequence of synchronization signals corresponds to the first index of the first common signal in the first set.

[0024] In one possible implementation, the first channel corresponding to the first common signal corresponds to the first index. The first channel is a broadcast channel, a channel carrying system information, or a control channel. The control channel is used to schedule the channel carrying system information.

[0025] In one possible implementation, one or more of the following information corresponding to the first channel corresponds to the first index: information indicating the first index, the scrambling code of the first channel, and the DMRS sequence of the first channel.

[0026] In one possible implementation, the sequence of synchronization signals corresponds to the second index.

[0027] In one possible implementation, the first channel corresponding to the first common signal corresponds to the second index. The first channel is a broadcast channel, a channel carrying system information, or a control channel. The control channel is used to schedule the channel carrying system information.

[0028] In one possible implementation, one or more of the following information corresponding to the first channel corresponds to the second index: information indicating the second index, the scrambling code of the first channel, and the DMRS sequence of the first channel.

[0029] In one possible implementation, the first index or the second index corresponds to a resource of a second common signal; wherein the second common signal includes a control channel or a channel carrying system information, the control channel being used to schedule the channel carrying system information.

[0030] In one possible implementation, an RRM measurement result corresponding to the first common signal is received from the terminal, and the RRM measurement result is identified by the first index.

[0031] Thirdly, embodiments of this application provide a communication device, which can be a terminal or a chip for a terminal. The device has the function of implementing any of the methods described in the first aspect. This function can be implemented in hardware or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-described functions.

[0032] Fourthly, embodiments of this application provide a communication device, which may be a wireless access network device or a chip for a wireless access network device. This device has the function of implementing any of the methods described in the second aspect above. This function can be implemented in hardware or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-described functions.

[0033] Fifthly, embodiments of this application provide a communication device, including a processor and a memory; the memory is used to store computer instructions, and when the device is running, the processor executes the computer instructions stored in the memory to cause the device to perform any implementation method in the first or second aspect described above.

[0034] In a sixth aspect, embodiments of this application provide a communication apparatus, including units or means for performing various steps of any of the implementation methods in the first or second aspect described above.

[0035] In a seventh aspect, embodiments of this application provide a communication device, including a processor and an interface circuit. The processor is configured to communicate with other devices via the interface circuit and execute any implementation of the methods described in the first or second aspect above. The processor may include one or more processors.

[0036] Eighthly, embodiments of this application provide a communication device including a processor coupled to a memory, the processor being configured to invoke a program stored in the memory to execute any implementation method of the first or second aspect described above. The memory may be located within or outside the device. Furthermore, the processor may be one or more.

[0037] Ninthly, embodiments of this application also provide a computer-readable storage medium storing instructions that, when executed on a communication device, cause any implementation of the first or second aspect described above to be performed.

[0038] In a tenth aspect, embodiments of this application also provide a computer program product, which includes a computer program that, when run by a communication device, causes any implementation method in the first or second aspect described above to be executed.

[0039] Eleventhly, embodiments of this application also provide a chip system, including: a processor for executing any implementation method of the first or second aspect described above.

[0040] In a twelfth aspect, embodiments of this application also provide a communication system, which includes a communication device for performing any implementation of the first aspect and a communication device for performing any implementation of the second aspect. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the architecture of the communication system used in the embodiments of this application;

[0042] Figure 2 This is a schematic diagram showing the location of time-frequency resources for signals / channels in a 4G LTE system.

[0043] Figure 3 This is a schematic diagram of the resource location of SSB in a 5G NR system;

[0044] Figure 4 This is a schematic diagram illustrating the resource reuse methods of SSB and initial common PDCCH in a 5G NR system.

[0045] Figure 5 This is a schematic diagram illustrating the inability of public signals to be dynamically scheduled in different beam directions at the time of transmission.

[0046] Figure 6 This is a schematic diagram of a grouping rule;

[0047] Figure 7 A schematic diagram of beam transmission for public signals;

[0048] Figure 8 A schematic diagram of a wireless communication method provided in an embodiment of this application;

[0049] Figure 9 A schematic diagram of the structure of a communication device provided for an embodiment of this application;

[0050] Figure 10 This is a schematic diagram of the structure of a communication device provided for an embodiment of this application. Detailed Implementation

[0051] Figure 1 This is a schematic diagram of the architecture of the communication system 1000 used in the embodiments of this application. Figure 1 As shown, the communication system includes a wireless access network 100 and a core network 200. Optionally, the communication system 1000 may also include an Internet 300. The wireless access network 100 may include at least one wireless access network device (such as...). Figure 1110a and 110b in the above), may also include at least one terminal (such as Figure 1 (Referring to 120a-120j in the original text). Terminals connect wirelessly to the wireless access network (WLAN) equipment, which in turn connects to the core network via wireless or wired connections. The core network equipment and the WLAN equipment can be independent physical devices, or they can integrate the functions of the core network equipment and the logical functions of the WLAN equipment onto the same physical device. Alternatively, a single physical device can integrate some of the functions of both the core network equipment and the WLAN equipment. Terminals and WLAN equipment can be interconnected via wired or wireless connections. Figure 1 This is just an illustration; the communication system may also include other network devices, such as wireless repeaters and wireless backhaul devices. Figure 1 It is not shown in the middle.

[0052] Wireless access 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 wireless fidelity (WiFi) system; it can also be a module or unit that performs some of the functions of a base station, for example, it can be a central unit (CU) or a distributed unit (DU). Wireless access network equipment can be a macro base station (such as... Figure 1 110a in the text), can also be a micro base station or an indoor station (such as... Figure 1 110b) in the text can also be a relay node or a donor node, etc. The embodiments of this application do not limit the specific technology or device form used in the wireless access network equipment. In the embodiments of this application, a base station is used as an example of a wireless access network equipment for description.

[0053] A terminal can also be called a terminal device, user equipment (UE), mobile station, mobile terminal, etc. Terminals 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 grids, smart furniture, smart offices, smart wearables, smart transportation, smart cities, etc. Terminals can be mobile phones, tablets, computers with wireless transceiver capabilities, wearable devices, vehicles, drones, helicopters, airplanes, ships, robots, robotic arms, smart home devices, etc. The embodiments of this application do not limit the specific technologies or device forms used in the terminals.

[0054] Base stations and terminals can be fixed or mobile. They can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can be deployed in the air on aircraft, balloons, and artificial satellites. The embodiments of this application do not limit the application scenarios of base stations and terminals.

[0055] The roles of base stations and terminals can be relative, for example, Figure 1 The helicopter or drone 120i can be configured as a mobile base station. For terminals 120j accessing the wireless access network 100 via 120i, terminal 120i is a base station; however, for base station 110a, 120i is a terminal, meaning that 110a and 120i communicate via a wireless air interface protocol. Of course, 110a and 120i can also communicate via a base station-to-base station interface protocol; in this case, 120i is also a base station relative to 110a. Therefore, both base stations and terminals can be collectively referred to as communication devices. Figure 1 The 110a and 110b in the text can be referred to as communication devices with base station functions. Figure 1 The 120a-120j in the text can be referred to as communication devices with terminal functions.

[0056] Communication between base stations and terminals, between base stations, and between terminals can be conducted using licensed spectrum, unlicensed spectrum, or both simultaneously. Communication can be conducted using spectrum below 6 gigahertz (GHz), spectrum above 6 GHz, or both simultaneously. The embodiments of this application do not limit the spectrum resources used for wireless communication.

[0057] In the embodiments of this application, the functions of the base station can be executed by modules (such as chips) within the base station, or by a control subsystem that includes base station functions. This control subsystem, including base station functions, can be a control center in the aforementioned application scenarios such as smart grids, industrial control, intelligent transportation, and smart cities. Similarly, the functions of the terminal can be executed by modules (such as chips or modems) within the terminal, or by a device that includes terminal functions.

[0058] In this application, the base station sends downlink signals or downlink information to the terminal, with the downlink information carried on the downlink channel; the terminal sends uplink signals or uplink information to the base station, with the uplink information carried on the uplink channel. In order to communicate with the base station, the terminal needs to establish a radio connection with a cell controlled by the base station. The cell with which the terminal has established a radio connection is called the terminal's serving cell. When the terminal communicates with this serving cell, it is also subject to interference from signals from neighboring cells.

[0059] In the embodiments of this application, the time-domain symbol can be an orthogonal frequency division multiplexing (OFDM) symbol or a discrete Fourier transform-spread-OFDM (DFT-s-OFDM) symbol. Unless otherwise specified, the symbols in the embodiments of this application refer to time-domain symbols.

[0060] It is understood that in the embodiments of this application, the physical downlink shared channel (PDSCH), physical downlink control channel (PDCCH), physical uplink shared channel (PUSCH), and physical broadcast channel (PBCH) are only examples of downlink data channels, downlink control channels, uplink data channels, and broadcast channels. In different systems and different scenarios, data channels, control channels, and broadcast channels may have different names, and the embodiments of this application do not limit this.

[0061] In 4G LTE systems, the basic system parameters, frame structure, and signal time-frequency resource design are relatively fixed. Specifically:

[0062] First, regarding the basic system parameters and frame structure, the 4G LTE system only supports a fixed 15 kilohertz (kHz) subcarrier spacing (SCS). A radio frame consists of 10 subframes, each of which includes 14 OFDM symbols (hereinafter referred to as symbols) for a normal cyclic prefix. The time-domain scheduling granularity is one subframe. Only a limited number of carrier bandwidths are supported, specifically 1.4 MHz, 3 MHz, 5 MHz, 10 MHz, 15 MHz, and 20 MHz. The frequency scheduling granularity is 12 subcarriers, i.e., the bandwidth of one resource block (RB). This RB is the basic time-frequency scheduling unit, specifically consisting of one time-domain subframe and 12 frequency subcarriers, forming a two-dimensional time-frequency resource. One subcarrier of one symbol is the smallest time-frequency resource, called a resource element (RE). Therefore, one RB includes 12 x 14 REs.

[0063] Second, regarding the time-frequency resources of the signal, in a subframe, the signals used for initial access are located within the bandwidth of 6 RBs at the carrier center, including the primary synchronization signal (PSS), secondary synchronization signal (SSS), and PBCH. (Reference) Figure 2This diagram illustrates the location of signal / channel time-frequency resources in a 4G LTE system. The terminal can only obtain carrier bandwidth after receiving the PBCH. The PSS and SSS transmission cycles are 5 subframes, and the PBCH transmission cycle is 10 subframes. Regardless of whether data transmission occurs, each RB in each subframe needs to transmit a cell-specific reference signal (CRS) for functions such as measurement, channel estimation, demodulation, and time-frequency tracking. The PDCCH is used for scheduling uplink and downlink data channels and common information. Specifically, it is distributed across the entire carrier bandwidth through time-frequency interleaving, with the time domain located within the first n symbols of a subframe, where n is a natural number from 1 to 4. In this application, common information may include system information blocks (SIBs), random access channel (RACH) responses, paging messages, etc.

[0064] In 5G NR systems, the design of basic system parameters, frame structure, and signal time-frequency resources is relatively flexible. Specifically:

[0065] First, regarding basic system parameters and frame structure, the 5G NR system supports multiple SCSs. Specifically, for frequency range 1 (generally considered below 6GHz), it supports 15 / 30 / 60kHz SCSs; for frequency range 2 (generally considered above 6GHz), it supports 60kHz and 120kHz SCSs. A radio frame consists of 10 subframes, each with a duration of 1 millisecond (ms). The time-domain scheduling granularity of the NR system is defined as a time slot, and each time slot includes 14 OFDM symbols (hereinafter referred to as symbols) for a normal cyclic prefix. Therefore, the number of time slots included in a subframe varies depending on the SCS. For example, for a 15kHz SCS, a subframe includes 1 time slot; for a 30kHz SCS, a subframe includes 2 time slots, each with a duration of 0.5ms. The NR communication system supports flexible carrier bandwidth, meaning it does not limit carrier bandwidth to the limited types found in the LTE system. The basic frequency-domain scheduling granularity is also 12 subcarriers.

[0066] Secondly, regarding signal time-frequency resources, the signal used for initial access in the NR system is called the synchronization signal / PBCH block (SSB), which includes the PSS, SSS, and PBCH. The SSB's frequency domain position within the carrier is flexible, meaning it is not restricted to the carrier center as in the LTE system. The NR system introduces the concept of a bandwidth part (BWP), decoupling the system-level carrier from the terminal-level BWP. For example, the NR system can support a 100MHz bandwidth carrier, but the terminal can support only a specific 20MHz BWP reception capability. In terms of time-domain periods, NR supports multiple SSB transmission periods. During the initial access phase, the terminal assumes an SSB transmission period of 20ms, equivalent to the duration of two radio frames. To improve coverage, the NR system introduces beamforming mechanisms for common channels and achieves omnidirectional coverage by beamforming multiple SSBs. Furthermore, NR systems largely eliminate the need for continuous signal transmission (unlike LTE systems where a CRS is always transmitted on each RB in every subframe regardless of data transmission). Instead, reference signals (RS) are introduced for each function through functional decoupling. Examples include SSS or Channel State Information-Reference Signal (CSI-RS) for higher-layer measurements, and CSI-RS or Demodulation Reference Signal (DMRS) for channel estimation. Each function's RS is configured and transmitted as needed. PDCCH is still used for scheduling uplink and downlink data channels and common information, but it doesn't necessarily need to be spread across the entire carrier bandwidth through time-frequency interleaving. Instead, it can be transmitted within the frequency domain resources of a portion of the RBs on the carrier, called the control resource set (CORESET). The detection location of PDCCH in the time domain is determined by the search space configuration, unlike LTE systems where PDCCH detection is required for every subframe.

[0067] In summary, compared to 4G LTE, 5G NR communication systems offer greater flexibility in system design, including basic parameters, frame structure, and channel time-frequency resource design, which better supports forward compatibility and scalability.

[0068] In the NR system, the initial access process for a terminal mainly includes:

[0069] First, the PSS and SSS are synchronized with the NR system in time and frequency, and the physical cell identifier is obtained.

[0070] Then, the master information block (MIB) in the PBCH is received to obtain the necessary system information of the NR system, including the initial BWP and the time and frequency resource configuration of the PDCCH for scheduling common channels (including the resource configuration of the frequency domain CORESET and the time domain search space).

[0071] Then, receive SIB1 to obtain necessary system information other than the system information in MIB, including RACH configuration, time division duplexing (TDD) frame structure configuration, etc.

[0072] Then, the terminal detects the paging message from the system, or the terminal sends a random access request to establish a radio resource control (RRC) connection with the base station;

[0073] Once the RRC connection is successfully established, the terminal and the base station can transmit data normally.

[0074] To achieve omnidirectional coverage of the initial access common channel, NR employs beamforming, transmitting multiple SSBs (Special Signal Buses) in multiple beam directions using time division multiplexing (TDM). This transmission method can be called common signal transmission or common signal beam scanning transmission, where the common signal includes the SSBs. For the multiple SSBs to be transmitted, these SSBs use TDM resource multiplexing, and the resource locations of each SSB are fixed. (Reference) Figure 3 This diagram illustrates the resource location of SSBs in a 5G NR system. Within an SSB cycle, a set of SSB beams can be transmitted using TDM (Time-Demand Communication). This set of SSB beams is represented by SSB index numbers. For example, for an NR system deployed in the 3GHz–6GHz band, this set of SSBs includes eight SSB beams with indices #0, #1, ..., #7. The frequency domain location of the SSBs is flexible; they only need to be located on a predefined frequency grid. For the time domain location, the SSB set is located within the first half of a radio frame, and the time domain location of each SSB is fixed. (Reference) Figure 3 Taking the 30kHz SCS as an example, these 8 SSBs are located in the first 4 time slots of the first half of the frame, and their specific symbol positions are as follows: Figure 3 The fixed position is shown. For the multiple SSBs being transmitted, the beam transmission directions of these multiple SSBs are different, and they are transmitted in a fixed order. Figure 3Taking the eight SSBs shown as an example, the beam directions of SSB0 to SSB7 are directions 1 to 8, respectively. When transmitting these eight SSBs, the transmission order is as follows: SSB0 is transmitted in direction 1, SSB1 in direction 2, SSB2 in direction 3, SSB3 in direction 4, SSB4 in direction 5, SSB5 in direction 6, SSB6 in direction 7, and SSB7 in direction 8. Therefore, each SSB occupies a fixed amount of resources, and the base station transmits the beams of these SSBs on the corresponding resources according to fixed directions.

[0075] Besides the SSB employing beam scanning transmission, the common PDCCH used for scheduling common channels (such as SIB1 and other SIBs, paging messages, etc.) during the initial access phase is also transmitted using a similar beam scanning method. The time-frequency resources of this common PDCCH are jointly determined by the frequency domain's CORESET and the time domain's search space. (Reference) Figure 4 This diagram illustrates the resource multiplexing methods of SSB and initial common PDCCH in a 5G NR system. The PDCCH is used to schedule channels carrying SIBs. For Frequency Range 1 (FR1), NR only supports TDM (Time Division Multiplexing) for SSB and PDCCH, i.e., Pattern 1. For Frequency Range 2 (FR2), the NR system supports TDM or Frequency Division Multiplexing (FDM) multiplexing of SSB and PDCCH, with FDM further divided into Pattern 2 and Pattern 3. FR1 ranges from 450MHz to 6000MHz, and FR2 ranges from 24250MHz to 52600MHz.

[0076] Based on the initial access mechanism of the NR system described above, it can be seen that the current public signal transmission method has a fixed correspondence with the frame structure. Furthermore, for FR2, due to the higher deployment frequency, more antenna elements are used to achieve greater beamforming gain; currently, the industry mainstream uses analog beamforming. With analog beamforming mechanisms, at any given time, all frequency domain resources can only use the same beam weighting value, causing the beam to point only in one direction. (Reference) Figure 5This diagram illustrates the inability to dynamically schedule the beam direction of a common signal at the moment of transmission. In this example, the beams of each common signal are scanned and transmitted in different directions in a certain order, and the transmission direction of each common signal beam is fixed, as is the time-frequency resource occupied by each common signal. Taking common signal 2 as an example, when transmitting the beam of common signal 2, there may be no terminals or a small number of terminals in the direction of common signal 2's beam, while there may be terminals or a large number of terminals in other directions. However, since only common signal 2 can be transmitted at the current moment, and the beam direction of common signal 2 is fixed, it cannot be directed to the direction with terminals or a large number of terminals. This results in terminals with communication needs being unable to receive service, and also leads to the invalid transmission of the common signal beam, causing a waste of resources.

[0077] Therefore, how to achieve flexible transmission of public signals is the problem that this application aims to solve.

[0078] To address this issue, this application introduces multiple common signal transmission methods, each corresponding to a common signal set. A common signal set includes multiple common signals, and each common signal corresponds to a beam transmission direction. Different common signals generally correspond to different beam transmission directions. A common signal transmission method is used to indicate the sequential transmission order of multiple common signals in the common signal set. The base station can determine the common signal transmission method corresponding to the common signal set according to service needs, and transmit multiple common signals within the common signal set to the terminal according to the common signal transmission method. The terminal can detect one or more common signals among the multiple common signals and obtain information such as synchronization signals from the detected common signals. In this application, unless otherwise specified, "set" can be an abbreviation for "common signal set".

[0079] As one implementation method, embodiments of this application can group multiple common signals within a common signal set according to different candidate grouping rules, resulting in one or more groups. Each group corresponds to a resource set, and each resource set includes one or more resources corresponding to the multiple common signals. Each resource includes time-domain resources and / or frequency-domain resources. Common signals within the same group share resources within the same resource set; that is, a common signal within a group can use any resource within the resource set corresponding to that group, but a resource can only be allocated to one common signal at any given time.

[0080] Figure 6 This is a schematic diagram of a grouping rule, which divides the common signals in the first set into four groups, where the first set includes common signals 0 to common information 7. See below:

[0081] Group 1: Includes common signal 0 and common signal 4. Group 1 corresponds to resource set 1 consisting of resource 1 and resource 5. In one transmission, common signal 0 corresponds to one of resource 1 or resource 5, and common signal 4 corresponds to the other of resource 1 or resource 5.

[0082] Group 2: includes common signal 1 and common signal 5. Group 2 corresponds to resource set 2 consisting of resource 2 and resource 6. In one transmission, common signal 1 corresponds to one of resource 2 or resource 6, and common signal 5 corresponds to the other of resource 2 or resource 6.

[0083] Group 3: includes common signal 2 and common signal 6. Group 3 corresponds to resource set 3 consisting of resource 3 and resource 7. In one transmission, common signal 2 corresponds to one of resource 3 or resource 7, and common signal 6 corresponds to the other of resource 3 or resource 7.

[0084] Group 4: Includes common signal 3 and common signal 7. Group 4 corresponds to resource set 4 consisting of resource 4 and resource 8. In one transmission, common signal 3 corresponds to one of resource 4 or resource 8, and common signal 7 corresponds to the other of resource 4 or resource 8.

[0085] Based on the above grouping rules, multiple common signal transmission methods corresponding to the first set can be obtained. The transmission order of common signals corresponding to any one of these methods can be described as follows: one of common signal 0 or common signal 4, one of common signal 1 or common signal 5, one of common signal 2 or common signal 6, one of common signal 3 or common signal 7, the other of common signal 0 or common signal 4, the other of common signal 1 or common signal 5, the other of common signal 2 or common signal 6, and the other of common signal 3 or common signal 7. Each common signal corresponds to a beam transmission direction; for example, common signals 0 to 7 correspond to directions 1 to 8, respectively.

[0086] As an example, the common signal transmission methods corresponding to the first set include common signal transmission method 1, common signal transmission method 2 and common signal transmission method 3.

[0087] The public signal transmission sequence corresponding to public signal transmission mode 1 is as follows: public signal 0, public signal 1, public signal 2, public signal 3, public signal 4, public signal 5, public signal 6, public signal 7. Resource 1 is allocated to public signal 0, resource 2 is allocated to public signal 1, resource 3 is allocated to public signal 2, resource 4 is allocated to public signal 3, resource 5 is allocated to public signal 4, resource 6 is allocated to public signal 5, resource 7 is allocated to public signal 6, and resource 8 is allocated to public signal 7.

[0088] The public signal transmission sequence corresponding to public signal transmission mode 2 is: public signal 0, public signal 5, public signal 2, public signal 3, public signal 4, public signal 1, public signal 6, public signal 7, and resource 1 is allocated to public signal 0, resource 2 is allocated to public signal 5, resource 3 is allocated to public signal 2, resource 4 is allocated to public signal 3, resource 5 is allocated to public signal 4, resource 6 is allocated to public signal 1, resource 7 is allocated to public signal 6, and resource 8 is allocated to public signal 7.

[0089] The public signal transmission sequence corresponding to public signal transmission mode 3 is: public signal 4, public signal 5, public signal 6, public signal 3, public signal 0, public signal 1, public signal 2, public signal 7. Resource 1 is allocated to public signal 4, resource 2 is allocated to public signal 5, resource 3 is allocated to public signal 6, resource 4 is allocated to public signal 3, resource 5 is allocated to public signal 0, resource 6 is allocated to public signal 1, resource 7 is allocated to public signal 2, and resource 8 is allocated to public signal 7.

[0090] When a base station transmits a set of multiple common signals to a terminal, it can flexibly select the transmission time of each common signal according to service requirements and grouping rules. Since each common signal corresponds to a beam transmission direction, and different common signals generally correspond to different beam transmission directions, it can select a common signal corresponding to a specific beam transmission direction for transmission at a given transmission time based on service requirements. This helps increase the probability of the common signal being detected by the terminal, improves system performance, and reduces resource waste. The service requirements mentioned here can refer to the specific locations of terminals with transmission needs at the transmission time of the common signal, and the number of terminals with transmission needs. The base station can choose to transmit the common signal directed to the terminals with transmission needs.

[0091] Figure 7 This is a schematic diagram illustrating flexible transmission of common signal beams. In this example, the first set includes common signals 0 to 7, and the grouping rule is the same as... Figure 6 The grouping rules are the same in the example shown. The base station sends common signals 0 to 7 from the first set to the terminal according to these grouping rules. Furthermore, the order of common signal transmission corresponding to the common signal transmission method is as follows: common signal 0, common signal 1, common signal 6, common signal 3, common signal 4, common signal 5, common signal 2, and common signal 7. It can be seen that in... Figure 7At the first possible moment to transmit either public signal 2 or public signal 6 (referred to as moment A), the base station chose to transmit public signal 6. At the second possible moment to transmit either public signal 2 or public signal 6 (referred to as moment B), the base station chose to transmit public signal 2. This is because at moment A, the base station determined that there were more terminals in the direction pointed to by the beam of public signal 6, therefore the base station decided to transmit public signal 6. At moment B, however, it transmitted public signal 2. Therefore, the base station can flexibly select one public signal from the corresponding packets to transmit based on service requirements, enabling flexible transmission of multiple public signals on different beams, increasing the probability of the public signal being detected by terminals, and improving communication efficiency.

[0092] In this embodiment, the base station sends multiple common signals from a first set to the terminal. The common signal detected by the terminal among these multiple common signals is called the first common signal. The second common signal is a common signal associated with the first common signal. The implementation methods for the first and second common signals in this embodiment include, but are not limited to:

[0093] In the first implementation method, the first common signal includes a synchronization signal and a broadcast channel, and the second common signal includes a control channel or a channel carrying system information.

[0094] Optionally, the synchronization signal includes PSS and SSS. The broadcast channel can be PBCH, used to carry MIB. The control channel can be PDCCH, used to schedule channels carrying system information, which may include SIB, where SIB may include SIB1.

[0095] In the second implementation method, the first common signal includes a synchronization signal, and the second common signal includes a control channel or a channel carrying system information.

[0096] Optionally, the synchronization signal includes PSS and SSS. The control channel can be PDCCH, used to schedule channels carrying system information. This system information can be the minimum necessary system information, which includes MIB and SIB. Here, SIB can include SIB1. It should be noted that the names of MIB or SIB here may have other names in future technological evolution.

[0097] The communication method provided in this application can be executed by a terminal or a component for the terminal (such as a chip, device, etc.), and a base station or a component for the base station (such as a chip, device, etc.). For ease of explanation, the following description will use the execution of the method by a terminal and a base station as examples.

[0098] Figure 8 This is a schematic diagram of a wireless communication method provided in an embodiment of this application. The method includes the following operations:

[0099] 801, the base station obtains the first set.

[0100] The first set includes multiple common signals, including a first common signal, which includes a synchronization signal. The index of the first common signal in the first set is a first index, which corresponds to multiple resources. A second index of the first common signal is used to indicate one of the multiple resources, including time-domain resources and / or frequency-domain resources. The first set may be predefined, for example, by a protocol.

[0101] The first set can be grouped according to a first grouping rule, which can be one of multiple candidate groups; alternatively, the first grouping rule can be predefined, meaning there is only one grouping rule; or, there may be no grouping rule, in which case all common signals in the first set can be considered as one group. The common signals in the first set are divided into at least one group according to the first grouping rule, and each group in this at least one group corresponds to a resource set, which includes at least one resource from the multiple resources corresponding to the first set. For example, as mentioned above... Figure 6 This could be an example of the first grouping rule.

[0102] 802, The base station sends the common signals from the first set to the terminal.

[0103] When a base station transmits common signals from the first set to a terminal, it can flexibly select one common signal from the groups corresponding to the transmission time based on service requirements and grouping rules. A group can correspond to multiple transmission times, and any common signal within that group can be transmitted at any of those multiple transmission times. Since each common signal corresponds to a beam transmission direction, it is possible to select a common signal corresponding to a specific beam transmission direction at a specific transmission time based on service requirements. This helps increase the probability of the common signal being detected by the terminal, improves system performance, and reduces resource waste. Figure 7 This is an example of a base station sending common signals from the first set to a terminal.

[0104] 803, Terminal detects common signal.

[0105] For example, a terminal can detect the first common signal in the first set of signals transmitted by a base station.

[0106] As one implementation method, the terminal can detect the synchronization signal based on the candidate sequence of the synchronization signal and the corresponding SCS. The candidate sequence can be predefined by a standard, such as using a unified candidate sequence of PSS and SSS, or a set of candidate sequences can be predefined for each frequency band. The candidate sequences corresponding to different frequency bands can be the same or different. For example, frequency band 1 uses the first set of candidate sequences, and frequency band 2 uses the second set of candidate sequences.

[0107] The synchronization signal's SCS can be associated with a frequency band. For example, band 1 can use SCSs for 15kHz and 30kHz, and band 2 can use SCSs for 120kHz and 240kHz. Alternatively, all frequency bands can use a single SCS or a set of SCSs.

[0108] By detecting candidate SCS and candidate sequences, the terminal can detect a certain synchronization signal, such as detecting a synchronization signal with an SCS of 30KHz in frequency band 1.

[0109] After detecting the synchronization signal, the terminal can receive the broadcast channel. The SCS of the broadcast channel can be the same as or have some correlation with the SCS of the synchronization signal. The time-frequency resources of the broadcast channel can also have some correlation with the time-frequency resources of the synchronization signal, such as on the same or adjacent symbols, or on the same or adjacent RBs.

[0110] 804, The terminal determines the first index of the first common signal in the first set and the second index of the first common signal based on the detected first common signal.

[0111] As one implementation method, after detecting the first common signal, the terminal can also determine the first set based on the first common signal. For example, the base station can send various sets to the terminal, such as a set consisting of 10 common signals, a set consisting of 8 common signals, or a set consisting of 6 common signals. The base station can select one of the sets and send the common signals in that set to the terminal; this set is the first set. After detecting the first common signal, the terminal can determine which of the aforementioned sets the first common signal belongs to. For example, the terminal can determine the first set based on the sequence of the synchronization signals of the first common signal, or the terminal can determine the first set based on the first channel corresponding to the first common signal. In this application, the first channel can be a broadcast channel, a channel carrying system information, or a control channel, and the control channel is used to schedule the channel carrying system information.

[0112] As another implementation method, the protocol can predefine the first set that the base station sends to the terminal, meaning that the first set sent by the base station to the terminal is known to the terminal in advance. Therefore, the terminal does not need to perform the operation of determining the first set as described above.

[0113] 805, the terminal determines the resources of the first common signal based on the first index and the second index, or based on the second index.

[0114] As one implementation method, a first index of the first common signal in a first set corresponds to multiple resources, and a second index can indicate one of these multiple resources. Therefore, the terminal can determine the resource of the first common signal based on the first index and the second index. Figure 7 For example, the first public signal can be any one of the transmitted public signals 0 to 7. After the terminal detects the first public signal, it can determine the first index of the first public signal in the first set, which indicates which public signal in the first set the first public signal belongs to. It can also determine the second index of the first public signal, which indicates one of the multiple resources corresponding to the first public signal. For instance, if the first index of the detected first public signal is determined to be 3, and the first public signal indicated by the first index is public signal 3, then the terminal can determine that the first public signal corresponds to the resource set consisting of resource 4 and resource 8. That is, when the base station transmits public signal 3, it allocates resource 4 or resource 8 to public signal 3. Further, the terminal can determine the resource actually allocated by the base station to public signal 3 based on the second index. For example, if the second index indicates resource 4, then the terminal determines that the resource of public signal 3 is resource 4, meaning the base station actually allocates resource 4 to public signal 3.

[0115] As another implementation method, the terminal determines the resource of the first common signal from multiple resources corresponding to the first set based on the second index. In this scheme, the terminal does not need to use the first index when determining the resource of the first common signal. Furthermore, the resource of the first common signal can be any one of the multiple resources corresponding to the first common signal, which are also called the multiple resources corresponding to the first index, or the multiple resources corresponding to the first set. For example, the first grouping rule divides common signals 0 to 7 into a group, and the resource set corresponding to this group consists of resources 1 to 8. The base station can allocate any one of resources 1 to 8 to any one of these eight common signals. Therefore, the base station can send the eight common signals in the first set in any transmission order. The first common signal detected by the terminal can be any one of the transmitted common signals 0 to 7. After detecting the first common signal, the terminal can determine the first index of the first common signal in the first set, which indicates which common signal in the first set it is, and can also determine the second index of the first common signal, which indicates one of the multiple resources (i.e., resources 1 to 8) corresponding to the first common signal. For example, if the terminal determines that the first index of the detected first public signal is 3, and the first public signal indicated by the first index is public signal 3, and the second index indicates a resource among resources 1 to 8, for example, if the second index indicates resource 1, then it can be determined that the base station has allocated resource 1 for public signal 3.

[0116] Based on the above scheme, the terminal determines the first index and second index of the first common signal in the first set according to the detected first common signal, and further determines the resources of the first common signal. In this method, a common signal can correspond to one or more resources, and different resources can be time-division multiplexed, so a common signal has multiple transmission opportunities. Furthermore, since each common signal corresponds to a beam transmission direction, the transmission opportunity of the common signal corresponding to a certain beam transmission direction can be flexibly adjusted. When transmitting multiple common signals in a set, the transmission order of each common signal corresponding to different beam transmission directions can be determined according to service requirements, thereby determining the resources occupied by each common signal. This method enables flexible transmission of multiple common signals in a set on different beams, increasing the likelihood of the common signal being detected by the terminal and reducing resource waste.

[0117] As one implementation method, after operation 805, the terminal can further determine the resources of the common signals other than the first common signal in the first set based on the resources of the first set and the first common signal. For example, if the first set includes eight common signals, namely common signal 0 to common signal 7, and the first common signal detected by the terminal is common signal 3, then after determining the resources of common signal 3, the terminal can further determine the resources of common signals 0 to common signal 2, and common signals 4 to common signal 7 based on the first set, the first index of common signal 3, and the resources of common signal 3.

[0118] As one implementation method, after operation 805 above, the terminal can also determine the resources of the second common signal based on the first index or the second index; and receive the second common signal based on the resources of the second common signal. The meaning of the second common signal can be referred to the foregoing description and will not be repeated here. For example, there is a correspondence between the first index of the first common signal and the resources of the second common signal. Therefore, the resources of the second common signal corresponding to the first index can be determined based on the first index of the first common signal and the correspondence between the first index of the first common signal and the resources of the second common signal. As another example, one of multiple resources corresponding to the first common signal can be determined based on the second index, and then the resources of the second common signal corresponding to the resources of the first common signal can be determined based on the determined resources of the first common signal.

[0119] As one implementation method, after operation 805 above, the terminal can also perform radio resource management (RRM) measurement based on the first common signal to obtain the RRM measurement result corresponding to the first common signal, which is identified by a first index; and send the RRM measurement result corresponding to the first common signal to the base station. The RRM measurement result includes, but is not limited to, at least one of: reference signal receiving power (RSRP), reference signal receiving quality (RSRQ), received signal strength indication (RSSI), or signal to interference plus noise ratio (SINR).

[0120] In this embodiment of the application, the first index of the first common signal in the first set can be determined according to any of the following methods:

[0121] Method 1: Determine the first index of the first common signal in the first set based on the sequence of synchronization signals.

[0122] For example, synchronization signal sequence 1 corresponds to the first index, and synchronization signal sequence 2 and synchronization signal sequence 3 correspond to other indices respectively. The synchronization signal sequence here can be either a PSS sequence or an SSS sequence.

[0123] For example, sequence combination 1 of PSS and SSS corresponds to the first index, while sequence combination 2 and sequence combination 3 of PSS and SSS correspond to other indices respectively.

[0124] Method 2: Determine the first index of the first common signal in the first set based on the first channel corresponding to the first common signal.

[0125] Optionally, the first index of the first common signal in the first set is determined based on one or more of the following information corresponding to the first channel: information indicating the first index, the scrambling code of the first channel, and the DMRS sequence of the first channel.

[0126] The information used to indicate the first index corresponds to the first field of the first channel. For example, if the first field contains 3 bits, it can indicate eight indices. For example, "000" indicates the first index, and the other seven bits are used to indicate other indices.

[0127] There are multiple scrambling codes for the first channel. For example, scrambling code 1 corresponds to the first index, while scrambling codes 2, 3, etc., correspond to other indices. When the terminal obtains scrambling code 1 for the first channel, it determines the first index.

[0128] There are multiple DMRS sequences for the first channel. For example, DMRS sequence 1 corresponds to the first index, while DMRS sequence 2, DMRS sequence 3, etc., correspond to other indices. When the terminal obtains DMRS sequence 1 for the first channel, it determines the first index.

[0129] In this embodiment of the application, the second index of the first common signal can be determined according to any of the following methods:

[0130] Method 1: Determine the second index of the first common signal based on the sequence of the synchronization signals.

[0131] For example, synchronization signal sequence 1 corresponds to the second index, and synchronization signal sequences 2 and 3 correspond to other indices respectively. The synchronization signal sequences here can be either PSS sequences or SSS sequences.

[0132] For example, sequence combination 1 of PSS and SSS corresponds to the second index, while sequence combination 2 and sequence combination 3 of PSS and SSS correspond to other indices respectively.

[0133] Method 2: Determine the second index of the first common signal based on the first channel corresponding to the first common signal.

[0134] Optionally, a second index of the first common signal is determined based on one or more of the following information corresponding to the first channel: information indicating the second index, the scrambling code of the first channel, and the DMRS sequence of the first channel.

[0135] The information used to indicate the second index corresponds to the second field of the first channel. For example, if the second field contains 3 bits, it can indicate eight indices. For example, "000" indicates the second index, and the other seven bits are used to indicate other indices.

[0136] There are multiple scrambling codes for the first channel. For example, scrambling code 1 corresponds to the second index, while scrambling codes 2, 3, etc., correspond to other indices. When the terminal obtains scrambling code 1 for the first channel, it determines the second index.

[0137] There are multiple DMRS sequences for the first channel. For example, DMRS sequence 1 corresponds to the second index, while DMRS sequence 2, DMRS sequence 3, etc., correspond to other indices. When the terminal obtains DMRS sequence 1 for the first channel, it determines the second index.

[0138] It should be noted that the methods for determining the first index and the methods for determining the second index described above can be implemented in combination.

[0139] For example, based on the sequence of synchronization signals, the first index of the first common signal in the first set, and the second index of the first common signal can be determined. For instance, the relationship between the sequence of synchronization signals and the first and second indices is shown in Table 1.

[0140] Table 1

[0141] Sequence 1 1 0 Sequence 2 1 1 Sequence 3 2 0 Sequence 4 2 1 Sequence 5 3 0 Sequence 6 3 1 Sequence 7 4 0 Sequence 8 4 1 …… …… ……

[0142] For example, if the sequence of the synchronization signal is sequence 3, then the first index is determined to be 2 and the second index is determined to be index 0. If the sequence of the synchronization signal is sequence 6, then the first index is determined to be 3 and the second index is determined to be index 1.

[0143] For example, based on the control channel corresponding to the first common signal, the first index of the first common signal in the first set and the second index of the first common signal can be determined. For instance, taking the scrambling code of the control channel as an example, the relationship between the scrambling code of the control channel and the first and second indices is shown in Table 2.

[0144] Table 2

[0145] Scrambling code 1 1 0 Scrambling code 2 1 1 Scrambling code 3 2 0 Scrambling code 4 2 1 Scrambling code 5 3 0 Scrambling code 6 3 1

[0146] Scrambling code 8 4 1 …… …… ……

[0147] For example, when the scrambling code for the control channel is scrambling code 3, the first index is determined to be 2 and the second index to be index 0. When the scrambling code for the control channel is scrambling code 6, the first index is determined to be 3 and the second index to be index 1.

[0148] For example, the first index of the first common signal in the first set is determined based on the sequence of the synchronization signal, and the second index of the first common signal is determined based on the broadcast channel corresponding to the first common signal.

[0149] For example, the first index of the first common signal in the first set is determined based on the broadcast channel corresponding to the first common signal, and the second index of the first common signal is determined based on the control channel corresponding to the first common signal.

[0150] As one implementation method, in this embodiment, a grouping rule for common signals is also used when determining the first index or the second index. For example, the terminal determines the first index or the second index according to the first grouping rule. Optionally, the terminal determines the first grouping rule corresponding to the first set from multiple candidate rules.

[0151] The following example illustrates this.

[0152] For example, the first grouping rule determined by the terminal is as follows:

[0153] Group 1 includes common signal 0 and common signal 4. Group 1 corresponds to resource set 1, which consists of resource 1 and resource 5.

[0154] Group 2 includes common signal 1 and common signal 5, and Group 2 corresponds to resource set 2 consisting of resource 2 and resource 6;

[0155] Group 3 includes common signal 2 and common signal 6, and Group 3 corresponds to resource set 3 consisting of resource 3 and resource 7;

[0156] Group 4 includes common signal 3 and common signal 7, and Group 4 corresponds to resource set 4, which consists of resource 4 and resource 8.

[0157] In one example, a field in the control channel is used to indicate a first index and a second index. The terminal obtains the bit information from this field of the control channel. Since there are a total of 8 common signals, the terminal first obtains the first 3 bits of this field and determines the first index based on these 3 bits. Then, according to the first grouping rule corresponding to the first set, the terminal determines that there are two common signals in each group. Therefore, the terminal only needs to obtain 1 bit of information from this field, for example, the 4th bit, and can determine the second index based on this 1 bit. For example, if the determined first index is 3, indicating common signal 3, and the second index is "0", indicating resource 4, then the terminal can determine that the detected first common signal is common signal 3, corresponding to resource 4. As another example, if the determined first index is 5, indicating common signal 5, and the second index is "1", indicating resource 6, then the terminal can determine that the detected first common signal is common signal 5, corresponding to resource 6.

[0158] As one implementation method, the terminal can determine the first grouping rule corresponding to the first set from multiple candidate grouping rules according to any one or more of the following methods:

[0159] Method 1: Determine the first grouping rule corresponding to the first set from multiple candidate grouping rules based on the sequence of synchronization signals in the first common signal.

[0160] For example, sequence 1 of the synchronization signal corresponds to the first grouping rule, while sequences 2, 3, etc., of the synchronization signal correspond to other candidate grouping rules. Here, the sequence of the synchronization signal can be either a PSS sequence or an SSS sequence.

[0161] For example, sequence combination 1 of PSS and SSS corresponds to the first grouping rule, while sequence combination 2 of PSS and SSS, sequence combination 3 of PSS and SSS, etc., correspond to other candidate grouping rules.

[0162] Method 2: Determine the first grouping rule corresponding to the first set from multiple candidate grouping rules based on the number of common signals within a group corresponding to the first set.

[0163] For example, if a terminal receives quantity information from a base station, which indicates the number of common signals in a group corresponding to the first set, the terminal can determine the first grouping rule corresponding to the first set based on the quantity information and predefined rules.

[0164] For example, if the terminal receives a quantity information of 2, meaning that each group contains 2 common signals, then the terminal determines the rule for the first group as follows:

[0165] Group 1 includes common signal 0 and common signal 4. Group 1 corresponds to resource set 1, which consists of resource 1 and resource 5.

[0166] Group 2 includes common signal 1 and common signal 5, and Group 2 corresponds to resource set 2 consisting of resource 2 and resource 6;

[0167] Group 3 includes common signal 2 and common signal 6, and Group 3 corresponds to resource set 3 consisting of resource 3 and resource 7;

[0168] Group 4 includes common signal 3 and common signal 7, and Group 4 corresponds to resource set 4, which consists of resource 4 and resource 8.

[0169] For example, if the terminal receives a quantity information of 4, meaning that each group contains 4 common signals, then the terminal determines the rule for the first group as follows:

[0170] Group 1 includes common signal 0 to common signal 3, and Group 1 corresponds to resource set 1 consisting of resource 1 to resource 4;

[0171] Group 2 includes common signals 4 to 7, and Group 2 corresponds to resource set 2 consisting of resources 5 to 8.

[0172] Method 3: Based on the TDD configuration, determine the first grouping rule corresponding to the first set from multiple candidate grouping rules.

[0173] Each TDD configuration indicates the ratio between uplink and downlink time-domain resources. These time-domain resources include at least one of symbols, time slots, subframes, or radio frames. Optionally, the terminal can obtain the current TDD configuration from a detected first common signal.

[0174] For example, TDD configuration 1 corresponds to the first grouping rule, while TDD configuration 2 and TDD configuration 3 correspond to other candidate grouping rules. When the terminal determines that the current TDD configuration is TDD configuration 1, the terminal determines the first grouping rule corresponding to the first set from multiple candidate grouping rules.

[0175] It is understood that, in order to achieve the functions in the above embodiments, the base station and terminal include hardware structures and / or software modules corresponding to perform each function. Those skilled in the art should readily recognize that, based on the units and method steps described in conjunction with the embodiments disclosed in this application, this application can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed in hardware or by computer software driving hardware depends on the specific application scenario and design constraints of the technical solution.

[0176] Figure 9 and Figure 10The diagram illustrates the possible structures of communication devices provided in embodiments of this application. These communication devices can be used to implement the functions of a terminal or base station in the above method embodiments, and thus also achieve the beneficial effects of the above method embodiments. In the embodiments of this application, the communication device may be as follows: Figure 1 One of the terminals 120a-120j shown can also be as follows: Figure 1 The base station 110a or 110b shown can also be a module (such as a chip) applied to a terminal or base station.

[0177] like Figure 9 As shown, the communication device 900 includes a processing unit 910 and a transceiver unit 920. The communication device 900 is used to implement the above-mentioned... Figure 8 The method embodiments shown illustrate the functions of the terminal or base station.

[0178] When the communication device 900 is used to achieve Figure 8 In the method embodiment shown, the terminal functions as follows: a transceiver unit 920 is used to receive a common signal from a base station; a processing unit 910 is used to detect the common signal; determine a first index and a second index of the first common signal in a first set based on the detected first common signal, the first set including multiple common signals, the multiple common signals including the first common signal, the first common signal including a synchronization signal; the first index corresponds to multiple resources, the second index is used to indicate one of the multiple resources, the resource including time-domain resources and / or frequency-domain resources; and determine the resource of the first common signal based on the first index and the second index, or based on the second index.

[0179] In one possible implementation, the processing unit 910 is further configured to determine the first index or the second index according to the first grouping rule; wherein the common signals in the first set are divided into at least one group according to the first grouping rule, each of the at least one group corresponds to a resource set, and the resource set includes at least one resource among a plurality of resources corresponding to the first index.

[0180] In one possible implementation, the processing unit 910 is further configured to determine the first grouping rule corresponding to the first set from multiple candidate grouping rules based on the sequence of the synchronization signal; or, determine the first grouping rule corresponding to the first set from multiple candidate grouping rules based on the number of common signals within a group corresponding to the first set; or, determine the first grouping rule corresponding to the first set from multiple candidate grouping rules based on the time division duplex configuration.

[0181] In one possible implementation, the processing unit 910 is used to determine the first index based on the sequence of the synchronization signal.

[0182] In one possible implementation, the processing unit 910 is configured to determine a first index based on a first channel corresponding to the first common signal, wherein the first channel is a broadcast channel, a channel carrying system information, or a control channel, and the control channel is used to schedule the channel carrying system information.

[0183] In one possible implementation, the processing unit 910 is configured to determine the first index based on one or more of the following information corresponding to the first channel: information indicating the first index, the scrambling code of the first channel, and the DMRS sequence of the first channel.

[0184] In one possible implementation, the processing unit 910 is used to determine the second index based on the sequence of the synchronization signal.

[0185] In one possible implementation, the processing unit 910 is configured to determine the second index based on the first channel corresponding to the first common signal, wherein the first channel is a broadcast channel, a channel carrying system information, or a control channel, and the control channel is used to schedule the channel carrying system information.

[0186] In one possible implementation, the processing unit 910 is configured to determine the second index based on one or more of the following information corresponding to the first channel: information indicating the second index, the scrambling code of the first channel, and the DMRS sequence of the first channel.

[0187] In one possible implementation, the processing unit 910 is further configured to determine the resources of common signals other than the first common signal in the first set based on the resources of the first common signal and the first set.

[0188] In one possible implementation, the processing unit 910 is further configured to determine the resources of the second common signal according to the first index or the second index; and receive the second common signal through the transceiver unit 920 according to the resources of the second common signal; wherein the second common signal includes a control channel or a channel carrying system information, the control channel being used to schedule the channel carrying system information.

[0189] In one possible implementation, the processing unit 910 is further configured to perform radio resource management (RRM) measurement based on the first common signal to obtain the RRM measurement result corresponding to the first common signal, and the RRM measurement result is identified by the first index; the transceiver unit 920 is further configured to send the RRM measurement result corresponding to the first common signal to the radio access network device.

[0190] When the communication device 900 is used to achieve Figure 8In the method embodiment shown, the base station functions as follows: a processing unit 910 is used to acquire a first set, which includes multiple common signals, including a first common signal, which includes a synchronization signal; the index of the first common signal in the first set is a first index, which corresponds to multiple resources, and a second index of the first common signal is used to indicate one of the multiple resources, which includes time-domain resources and / or frequency-domain resources; a transceiver unit 920 is used to send the common signals in the first set to the terminal.

[0191] In one possible implementation, the first set corresponds to a first grouping rule, which is used to determine the first index or the second index; wherein, the common signals in the first set are divided into at least one group according to the first grouping rule, and each of the at least one group corresponds to a resource set, which includes at least one resource among a plurality of resources corresponding to the first index.

[0192] In one possible implementation, the sequence of the synchronization signal corresponds to the first grouping rule; or, the number of common signals within a group corresponding to the first set corresponds to the first grouping rule; or, the time-division duplex configuration corresponds to the first grouping rule.

[0193] In one possible implementation, the sequence of synchronization signals corresponds to the first index.

[0194] In one possible implementation, the first channel corresponding to the first common signal corresponds to the first index. The first channel is a broadcast channel, a channel carrying system information, or a control channel. The control channel is used to schedule the channel carrying system information.

[0195] In one possible implementation, one or more of the following information corresponding to the first channel corresponds to the first index: information indicating the first index, the scrambling code of the first channel, and the DMRS sequence of the first channel.

[0196] In one possible implementation, the sequence of synchronization signals corresponds to the second index.

[0197] In one possible implementation, the first channel corresponding to the first common signal corresponds to the second index. The first channel is a broadcast channel, a channel carrying system information, or a control channel. The control channel is used to schedule the channel carrying system information.

[0198] In one possible implementation, one or more of the following information corresponding to the first channel corresponds to the second index: information indicating the second index, the scrambling code of the first channel, and the DMRS sequence of the first channel.

[0199] In one possible implementation, the first index or the second index corresponds to a resource of a second common signal; wherein the second common signal includes a control channel or a channel carrying system information, the control channel being used to schedule the channel carrying system information.

[0200] In one possible implementation, the transceiver unit 920 is further configured to receive a radio resource management (RRM) measurement result corresponding to the first common signal from the terminal, the RRM measurement result being identified by the first index.

[0201] For a more detailed description of the processing unit 910 and the transceiver unit 920, please refer to [link / reference needed]. Figure 8 The relevant descriptions in the method embodiments shown are directly obtained and will not be repeated here.

[0202] like Figure 10 As shown, the communication device 1000 includes a processor 1010 and an interface circuit 1020. The processor 1010 and the interface circuit 1020 are coupled to each other. It is understood that the interface circuit 1020 can be a transceiver or an input / output interface. Optionally, the communication device 1000 may also include a memory 1030 for storing instructions executed by the processor 1010, or storing input data required by the processor 1010 to execute instructions, or storing data generated after the processor 1010 executes instructions.

[0203] When the communication device 1000 is used to implement Figure 8 In the method shown, the processor 1010 is used to implement the functions of the processing unit 910, and the interface circuit 1020 is used to implement the functions of the transceiver unit 920.

[0204] When the aforementioned communication device is a chip applied to a terminal, the terminal chip implements the functions of the terminal in the above method embodiments. The terminal chip receives information from other modules (such as radio frequency modules or antennas) in the terminal, which is information sent to the terminal by the base station; or, the terminal chip sends information to other modules (such as radio frequency modules or antennas) in the terminal, which is information sent to the base station by the terminal.

[0205] When the aforementioned communication device is a chip applied to a base station, the base station chip implements the functions of the base station in the above method embodiments. The base station chip receives information from other modules (such as radio frequency modules or antennas) in the base station, which is information sent by the terminal to the base station; or, the base station chip sends information to other modules (such as radio frequency modules or antennas) in the base station, which is information sent by the base station to the terminal.

[0206] It is understood that the processor in the embodiments of this application may be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. A general-purpose processor may be a microprocessor or any conventional processor.

[0207] The method steps in the embodiments of this application can be implemented in hardware or by a processor executing software instructions. The software instructions can consist of corresponding software modules, which 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 disks, portable hard disks, CD-ROMs, or any other form of storage medium known in the art. An exemplary storage medium is coupled to a processor, enabling the processor to read information from and write information to the storage medium. Of course, the storage medium can also be a component of the processor. The processor and storage medium can reside in an ASIC. Alternatively, the ASIC can reside in a base station or terminal. Of course, the processor and storage medium can also exist as discrete components in the base station or terminal.

[0208] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially 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 this application are performed entirely or partially. The computer can be a general-purpose computer, a special-purpose computer, a computer network, a base station, a user equipment, or other programmable device. The computer program or instructions can 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 can 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 can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium, such as a floppy disk, hard disk, or magnetic tape; it can also be an optical medium, such as a digital video optical disc; or it can be a semiconductor medium, such as a solid-state drive. The computer-readable storage medium may be a volatile or non-volatile storage medium, or may include both types of storage media.

[0209] In the various embodiments of this application, unless otherwise specified or in case of logical conflict, the terminology and / or descriptions of different embodiments are consistent and can be referenced by each other. The technical features of different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0210] In this application, "at least one" means one or more, and "more than one" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. In the textual description of this application, the character " / " generally indicates an "or" relationship between the preceding and following related objects; in the formulas of this application, the character " / " indicates a "division" relationship between the preceding and following related objects.

[0211] It is understood that the various numerical designations used in the embodiments of this application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of this application. The order of the process numbers described above does not imply the order of execution; the execution order of each process should be determined by its function and internal logic.

Claims

1. A wireless communication method, characterized in that, include: Detect public signals; Based on the detected first common signal, a first index and a second index of the first common signal in a first set are determined. The first set includes multiple common signals, including the first common signal, which includes a synchronization signal. The common signals in the first set are divided into at least one group according to a first grouping rule. Each of the at least one group corresponds one-to-one with at least one resource set. Each resource set in the at least one resource set includes at least one resource. The first index corresponds to one of the resource sets in the at least one resource set, and the second index is used to indicate a resource in the resource set corresponding to the first index. The resource includes time-domain resources and / or frequency-domain resources. Based on the first index and the second index, the resources of the first public signal are determined.

2. The method as described in claim 1, characterized in that, Also includes: Based on the first grouping rule, determine the first index or the second index.

3. The method as described in claim 2, characterized in that, Also includes: Based on the sequence of the synchronization signals, the first grouping rule corresponding to the first set is determined from multiple candidate grouping rules; or, Based on the number of common signals within a group corresponding to the first set, the first grouping rule corresponding to the first set is determined from multiple candidate grouping rules; or... Based on the time-division duplex configuration, the first grouping rule corresponding to the first set is determined from multiple candidate grouping rules.

4. The method according to any one of claims 1 to 3, characterized in that, Determining the first index of the first common signal in the first set includes: The first index is determined based on the sequence of the synchronization signals.

5. The method according to any one of claims 1 to 3, characterized in that, Determining the first index of the first common signal in the first set includes: Based on the first channel corresponding to the first public signal, the first index is determined. The first channel is a broadcast channel, a channel carrying system information, or a control channel. The control channel is used to schedule the channel carrying system information.

6. The method as described in claim 5, characterized in that, Determining the first index based on the first channel corresponding to the first public signal includes: The first index is determined based on one or more of the following information corresponding to the first channel: Information used to indicate the first index, the scrambling code of the first channel, and the demodulation reference signal (DMRS) sequence of the first channel.

7. The method according to any one of claims 1 to 6, characterized in that, Determining the second index of the first common signal includes: The second index is determined based on the sequence of the synchronization signals.

8. The method according to any one of claims 1 to 6, characterized in that, Determining the second index of the first common signal includes: The second index is determined based on the first channel corresponding to the first public signal. The first channel is a broadcast channel, a channel carrying system information, or a control channel. The control channel is used to schedule the channel carrying system information.

9. The method as described in claim 8, characterized in that, Determining the second index based on the first channel corresponding to the first public signal includes: The second index is determined based on one or more of the following information corresponding to the first channel: Information used to indicate the second index, the scrambling code of the first channel, and the DMRS sequence of the first channel.

10. The method according to any one of claims 1 to 9, characterized in that, Also includes: Based on the resources of the first common signal and the first set, determine the resources of common signals in the first set other than the first common signal.

11. The method according to any one of claims 1 to 9, characterized in that, Also includes: Based on the first index or the second index, determine the resources of the second common signal; Receive the second public signal according to the resources of the second public signal; The second common signal includes a control channel or a channel carrying system information, wherein the control channel is used to schedule the channel carrying system information.

12. The method according to any one of claims 1 to 11, characterized in that, Also includes: Radio Resource Management (RRM) measurements are performed based on the first public signal to obtain the RRM measurement results corresponding to the first public signal. The RRM measurement results are identified by the first index. The RRM measurement results are sent to the wireless access network equipment.

13. A wireless communication method, characterized in that, include: A first set is obtained, comprising multiple common signals, including a first common signal, which includes a synchronization signal. The common signals in the first set are divided into at least one group according to a first grouping rule. Each of the at least one group corresponds one-to-one with at least one resource set, and each resource set includes at least one resource. The index of the first common signal in the first set is a first index, which corresponds to one of the resource sets in the at least one resource set. A second index of the first common signal is used to indicate a resource in the resource set corresponding to the first index. The resource includes time-domain resources and / or frequency-domain resources. Send the common signals from the first set to the terminal.

14. The method as described in claim 13, characterized in that, The first grouping rule is used to determine the first index or the second index.

15. The method as described in claim 14, characterized in that, The sequence of the synchronization signal corresponds to the first grouping rule; or, The number of common signals within a group corresponding to the first set corresponds to the first grouping rule; or, The time-division duplex configuration corresponds to the first grouping rule.

16. The method according to any one of claims 13 to 15, characterized in that, The sequence of the synchronization signal corresponds to the first index.

17. The method according to any one of claims 13 to 15, characterized in that, The first channel corresponding to the first public signal corresponds to the first index. The first channel is a broadcast channel, a channel carrying system information, or a control channel. The control channel is used to schedule the channel carrying system information.

18. The method as described in claim 17, characterized in that, One or more of the following information corresponding to the first channel corresponds to the first index: Information used to indicate the first index, the scrambling code of the first channel, and the demodulation reference signal (DMRS) sequence of the first channel.

19. The method according to any one of claims 13 to 18, characterized in that, The sequence of the synchronization signal corresponds to the second index.

20. The method according to any one of claims 13 to 18, characterized in that, The first channel corresponding to the first public signal corresponds to the second index. The first channel is a broadcast channel, a channel carrying system information, or a control channel. The control channel is used to schedule the channel carrying system information.

21. The method as described in claim 20, characterized in that, One or more of the following information corresponding to the first channel corresponds to the second index: Information used to indicate the second index, the scrambling code of the first channel, and the DMRS sequence of the first channel.

22. The method according to any one of claims 13 to 21, characterized in that, The first index or the second index corresponds to the resource of the second common signal; The second common signal includes a control channel or a channel carrying system information, wherein the control channel is used to schedule the channel carrying system information.

23. The method according to any one of claims 13 to 22, characterized in that, Also includes: The terminal receives a Radio Resource Management (RRM) measurement result corresponding to the first public signal, and the RRM measurement result is identified by the first index.

24. A communication device, characterized in that, Includes a module for performing the method as described in any one of claims 1 to 12.

25. A communication device, characterized in that, Includes modules for performing the method as described in any one of claims 13 to 23.

26. A communication device, characterized in that, The device includes a processor and an interface circuit, wherein the interface circuit is used to receive signals from other communication devices besides the communication device and transmit them to the processor, or to send signals from the processor to other communication devices besides the communication device, and the processor is used to implement the method as described in any one of claims 1 to 12 through logic circuits or execution code instructions.

27. A communication device, characterized in that, The device includes a processor and an interface circuit, wherein the interface circuit is used to receive signals from other communication devices besides the communication device and transmit them to the processor, or to send signals from the processor to other communication devices besides the communication device, and the processor is used to implement the method as described in any one of claims 13 to 23 through logic circuits or execution code instructions.

28. A computer program product, characterized in that, The computer program product includes a computer program that, when executed by a communication device, implements the method as described in any one of claims 1 to 23.

29. A computer-readable storage medium, characterized in that, The storage medium stores a computer program or instructions, which, when executed by a communication device, implement the method as described in any one of claims 1 to 23.

30. A communication system, characterized in that, It includes a communication device for performing the method as described in any one of claims 1 to 12 and a communication device for performing the method as described in any one of claims 13 to 23.

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