System information transmission methods and communication devices

Abstract

This application provides a method and apparatus for transmitting system information. The method includes: obtaining a parameter in a first MIB used to indicate the DMRS position of a Type A PDSCH, the parameter being used to obtain a first System Information Block (SIB1), the first SIB1 including access configuration information of a first device; and obtaining the first SIB1 based on the parameter. The first device can be a simplified-capability terminal device. The system information transmission method provided in this application, by releasing / re-reading the parameter (field) in the MIB used for the DMRS position of a Type A PDSCH, for example, the field can be the DMRS-Type A-Position field in the MIB, instructing the simplified-capability terminal device to obtain SIB1. This enables the simplified-capability terminal device to obtain SIB1 and perform uplink synchronization and cell selection, ensuring normal communication for the simplified-capability terminal device.

Description

Technical Field

[0001] This application relates to the field of communications, and more specifically, to a method and apparatus for transmitting system information. Background Technology

[0002] A synchronization signal block, also known as a synchronization signal (SS) / physical broadcast channel block (PBCH), is a signal structure. The PBCH contains basic system information such as the system frame number and intra-frame timing information. Successful reception of the synchronization signal block by a terminal device is a prerequisite for its access to the cell.

[0003] Terminal devices complete cell search and synchronization by correctly receiving the master information block (MIB) carried in the PBCH. Specifically, by receiving the MIB, the terminal device obtains the configuration information required to interpret the system information block type 1 (SIB1) message. This configuration information may include the control resource set (Coreset) and search space (SS) corresponding to SIB1. Based on the configuration information corresponding to SIB1, the terminal device obtains SIB1. SIB1 may contain the configuration information required for the terminal device to access the system, and the terminal device can use SIB1 to perform system access, cell selection, and uplink synchronization.

[0004] Current discussions within new radio (NR) systems focus on the access of simplified capability terminal equipment (SMR) devices. SMR devices support smaller bandwidth, fewer antennas, lower power consumption, and lower cost. They differ significantly from traditional terminal equipment in terms of access capabilities and supported bandwidth.

[0005] For simplified terminal devices, whose access capabilities and supported bandwidth are lower than traditional terminal devices, the process of accessing the system and obtaining SIB1 differs from that of traditional terminal devices. However, currently there is no specific design for how simplified terminal devices access the NR system and obtain SIB1. Therefore, how to provide instructions for different types of terminals to access the NR system urgently needs to be addressed. Summary of the Invention

[0006] This application provides a method for transmitting system information and a communication apparatus. By releasing / re-reading the parameter (field) for the DMRS position of Type A PDSCH in the MIB, for example, this field can be the DMRS-Type A-Position field in the MIB, used to indicate that a simplified-capability terminal device can access the NR system and obtain SIB1. This allows simplified-capability terminal devices to sequentially and quickly obtain SIB1 and access the system, achieving uplink synchronization and cell selection, etc. This ensures that simplified-capability terminal devices can communicate normally and improves communication efficiency.

[0007] Firstly, a method for transmitting system information is provided. The execution subject of this method can be either a terminal device or a chip applied to the terminal device. The terminal device can be a simple-capability terminal device (or a first device). The method includes: obtaining a parameter in the first MIB used to indicate the location of the demodulation reference signal DMRS of the Type A Physical Downlink Shared Channel (PDSCH), the parameter being used to obtain a first system information block (SIB1), the first SIB1 including access configuration information of the first device; and obtaining the first SIB1 based on the parameter.

[0008] The first aspect provides a method for MIB transmission that redefines the content of the field (parameter) indicating the position of the demodulation reference signal DMRS for Type A PDSCH in the MIB. For example, this field could be the DMRS-TypeA-Position field in the MIB. This field is defined to allow simplified-capability terminal devices to obtain the corresponding SIB1, enabling them to sequentially and quickly access the system and achieve uplink synchronization and cell selection. This ensures that simplified-capability terminal devices can communicate normally and improves communication efficiency.

[0009] In one possible implementation of the first aspect, the access configuration information of the first device can be the configuration information for the first device to access the system. The access configuration information can be understood as the necessary system information required for data transmission between the first device and the network equipment. For example, the access configuration information may include: RACH configuration information, cell camping and selection configuration information, access service initiation configuration information, and scheduling information for other system messages, etc.

[0010] In one possible implementation of the first aspect, the parameter is used to indicate the control resource set corresponding to the first SIB1; obtaining the first SIB1 according to the parameter includes:

[0011] The Physical Downlink Control Channel (PDCCH) is detected on the control resource set corresponding to the first SIB1 indicated by the parameter. This PDCCH is used to schedule the Physical Downlink Shared Channel (PDSCH) carrying the first SIB1. In this implementation, by indicating the control resource set corresponding to the first SIB1 using the parameter for the demodulation reference signal (DMRS) position of the Type A PDSCH, the terminal device can acquire the first SIB1, thereby improving the accuracy of the terminal device acquiring the first SIB1 and facilitating implementation.

[0012] In one possible implementation of the first aspect, the control resource set corresponding to the first SIB1 may be the same as or different from the control resource set corresponding to the second SIB1, wherein the first MIB includes a first parameter, which is used to indicate the control resource set corresponding to the second SIB1, and the second SIB1 includes access configuration information of the second device.

[0013] In one possible implementation of the first aspect, the access configuration information of the second device can be the configuration information for the second device to access the system. This access configuration information can be understood as the necessary system information required for data transmission between the second device and the network equipment. For example, it includes: RACH configuration information, cell camping and selection configuration information, access service initiation configuration information, and scheduling information for other system messages.

[0014] In one possible implementation of the first aspect, when the control resource set corresponding to the first SIB1 is the same as the control resource set corresponding to the second SIB1, the first SIB1 in the PDSCH is obtained according to the downlink control information (DCI) carried by the PDCCH in the control resource set corresponding to the first SIB1 and the first information, where the first information is predefined or configured through higher-layer signaling. In this implementation, by predefining or configuring the information or values ​​of certain fields (parameters) in the DCI through higher-layer signaling, the length (detection range) of the DCI read by the terminal device can be reduced, effectively reducing the complexity of the terminal device reading the DCI and reducing the power consumption of the terminal device.

[0015] In one possible implementation of the first aspect, the first information may include one or more of the following fields: MCS, HARQ process number, NDI, and RV. The terminal device may not need to read one or more of the MCS, HARQ process number, NDI, and RV fields from the DCI, but may directly use predefined values ​​or values ​​configured through higher-layer signaling.

[0016] In one possible implementation of the first aspect, when the control resource set corresponding to the first SIB1 is the same as the control resource set corresponding to the second SIB1, the first SIB1 in the PDSCH is obtained according to the downlink control information (DCI) carried by the first PDCCH. In this implementation, the first PDCCH is the PDCCH in the control resource set corresponding to the first SIB1, and the first PDCCH is scrambled using a first radio network temporary identifier (RNTI). The second PDCCH is the PDCCH in the control resource set corresponding to the second SIB1, and the second PDCCH is scrambled using a second RNTI. The first PDCCH and the second PDCCH are different, and the first RNTI and the second RNTI are different.

[0017] In one possible implementation of the first aspect, the first RNTI can be a first U-RNTI or a first C-RNTI. The second RNTI can be a second U-RNTI or a second C-RNTI. The first U-RNTI and the second U-RNTI are different, and the first C-RNTI and the second C-RNTI are different.

[0018] In one possible implementation of the first aspect, the parameter is used to indicate receiving the first SIB1 at a first time-frequency location, wherein the first time-frequency location is predefined or configured via higher-layer signaling. In this implementation, the terminal can directly receive the first SIB1 on the PDSCH according to the indicated time-frequency resource location. This can improve the accuracy and efficiency of the first terminal device acquiring the first SIB1 and is easy to implement.

[0019] In one possible implementation of the first aspect, the parameter is used to indicate the first physical broadcast channel (PBCH) corresponding to the first SIB1. Obtaining the first SIB1 based on this parameter includes: obtaining the first SIB1 based on the first PBCH, where the time-frequency resource location of the first PBCH is predefined or configured via higher-layer signaling. In this implementation, by indicating the first PBCH corresponding to the first SIB1, the terminal can directly indicate the first PBCH based on the parameter for the demodulation reference signal (DMRS) location of the type A PDSCH, obtain the configuration information of the first SIB1 in the first PBCH, and further obtain the first SIB1. This allows the terminal device to sequentially and quickly access the system and achieve uplink synchronization and cell selection, ensuring that terminal devices with simple capabilities can communicate normally and improving communication efficiency.

[0020] In one possible implementation of the first aspect, the parameter is used to indicate whether the first SIB1 has been updated.

[0021] In one possible implementation of the first aspect, when the parameter indicates that the first SIB1 has not been updated, obtaining the first SIB1 according to the parameter includes: determining, according to the parameter, a previously obtained SIB1 as the first SIB1, wherein the previously obtained SIB1 is the SIB1 previously obtained by the first device. In this implementation, when the parameter for the demodulation reference signal DMRS position of type A PDSCH indicates that the first SIB1 has not been updated, the first terminal device can directly determine the previously obtained SIB1 as the first SIB1. The terminal device does not need to perform various steps and processes for obtaining the first SIB1 based on the first SIB1 configuration information included in the currently received first MIB. This reduces the complexity of the terminal device obtaining the first SIB1 and reduces the power consumption of the terminal device.

[0022] In one possible implementation of the first aspect, when the parameter indicates that the first SIB1 has been updated, obtaining the first SIB1 according to the parameter includes: obtaining the first SIB1 according to the configuration information of the first SIB1 indicated in the first MIB.

[0023] In one possible implementation of the first aspect, when the mapping type of the PDSCH carrying the first SIB1 is type A, the time domain symbol position of the first DMRS of the PDSCH carrying the first SIB1 is the fourth time domain symbol within the time unit where the PDSCH is located.

[0024] In one possible implementation of the first aspect, the predefined can be understood as being defined by the protocol. The signaling configuration can be understood as being configured by higher-layer or physical-layer signaling. Higher-layer signaling may include, for example, radio resource control (RRC), medium access control (MAC) control element (CE), radio link control (RLC), etc. Physical-layer signaling may include, for example, downlink control information (DCI), signaling transmitted through a downlink physical-layer channel, such as PDCCH or PDSCH.

[0025] In one possible implementation of the first aspect, the parameter (field) for the demodulation reference signal DMRS position for type A PDSCH is the Dmrs-TypeA-Position parameter (field).

[0026] Secondly, a method for system information transmission is provided. The execution entity of this method can be either a network device or a chip applied to the network device. The method includes: determining a first master information block (MIB), the first MIB including parameters indicating the location of the demodulation reference signal (DMRS) of the type A physical downlink shared channel (PDSCH), the parameters indicating a first system information block (SIB1), the first SIB1 including access configuration information of a first device; and sending the first MIB.

[0027] The second aspect provides a method for MIB transmission that redefines the content of the field (parameter) indicating the position of the demodulation reference signal DMRS for Type A PDSCH in the MIB. For example, this field could be the DMRS-TypeA-Position field in the MIB. This field is defined to allow simplified-capability terminal devices to obtain the corresponding SIB1, enabling them to sequentially and quickly access the system and achieve uplink synchronization and cell selection. This ensures that simplified-capability terminal devices can communicate normally and improves communication efficiency.

[0028] In one possible implementation of the second aspect, the parameter is used to indicate the control resource set corresponding to the first SIB1. In this implementation, indicating the control resource set corresponding to the first SIB1 by using a parameter for the demodulation reference signal DMRS position of type A PDSCH can improve the accuracy of the terminal device in acquiring the first SIB1 and facilitates implementation.

[0029] In one possible implementation of the second aspect, the control resource set corresponding to the first SIB1 may be the same as or different from the control resource set corresponding to the second SIB1, wherein the first MIB includes a first parameter, which is used to indicate the control resource set corresponding to the second SIB1, and the second SIB1 includes access configuration information of the second device.

[0030] In one possible implementation of the second aspect, when the control resource set corresponding to the first SIB1 is the same as the control resource set corresponding to the second SIB1, the first information in the downlink control information (DCI) carried by the PDCCH in the control resource set corresponding to the first SIB1 is predefined or configured through higher-layer signaling. In this implementation, by predefining or configuring the information or values ​​of certain fields (parameters) in the DCI through higher-layer signaling, when the terminal device and the second terminal detect the same DCI, the length (detection range) of the DCI read by the terminal device can be reduced, effectively reducing the complexity of the DCI read by the terminal device and reducing the power consumption of the terminal device.

[0031] In one possible implementation of the second aspect, the first information may include one or more of the following fields: MCS, HARQ process number, NDI, and RV. The terminal device may not need to read one or more of the MCS, HARQ process number, NDI, and RV fields from the DCI, but can directly use predefined values ​​or values ​​configured through higher-layer signaling.

[0032] In one possible implementation of the second aspect, when the control resource set corresponding to the first SIB1 is the same as the control resource set corresponding to the second SIB1, the first PDCCH is scrambled using the first RNTI, and the second PDCCH is scrambled using the second RNTI. The first PDCCH is the PDCCH in the control resource set corresponding to the first SIB1, and the second PDCCH is the PDCCH in the control resource set corresponding to the second SIB1. The first PDCCH is different from the second PDCCH, and the first RNTI is different from the second RNTI.

[0033] In one possible implementation of the second aspect, the parameter is used to indicate that the first SIB1 is located at a first time-frequency location. This first time-frequency location is predefined or configured via higher-layer signaling. In this implementation, the terminal can directly receive the first SIB1 on the PDSCH according to the indicated time-frequency resource location. This can improve the accuracy and efficiency of the first terminal device acquiring the first SIB1 and is easy to implement.

[0034] In one possible implementation of the second aspect, the parameter is used to indicate the first physical broadcast channel (PBCH) corresponding to the first SIB1. The time-frequency resource location of the first PBCH is predefined or configured via higher-layer signaling. In this implementation, by indicating the first PBCH corresponding to the first SIB1, the terminal can directly indicate the first PBCH according to the parameter for the demodulation reference signal (DMRS) location of the type A PDSCH, obtain the configuration information of the first SIB1 in the first PBCH, and further obtain the first SIB1. This allows the terminal device to sequentially and quickly access the system and achieve uplink synchronization and cell selection, ensuring normal communication for terminal devices with simple capabilities and improving communication efficiency.

[0035] In one possible implementation of the second aspect, the parameter is used to indicate whether the first SIB1 has been updated. In this implementation, when the parameter for the demodulation reference signal DMRS position of the type A PDSCH indicates whether the first SIB1 has been updated, if no update exists, the terminal device can directly determine the previously acquired SIB1 as the first SIB1. The terminal device does not need to perform various steps and procedures to obtain the first SIB1 based on the first SIB1 configuration information included in the currently received first MIB. This reduces the complexity of the terminal device obtaining the first SIB1 and lowers the power consumption of the terminal device.

[0036] In one possible implementation of the second aspect, when the mapping type of the PDSCH carrying the first SIB1 is type A, the time domain symbol position of the first DMRS of the PDSCH carrying the first SIB1 is the fourth time domain symbol within the time unit where the PDSCH is located.

[0037] In one possible implementation of the second aspect, the parameter (field) for the demodulation reference signal DMRS position for type A PDSCH is the Dmrs-TypeA-Position parameter (field).

[0038] Thirdly, a communication device is provided, which includes units for performing the steps of the first aspect or any possible implementation thereof.

[0039] Fourthly, a communication device is provided, which includes units for performing the steps of the second aspect or any possible implementation thereof.

[0040] Fifthly, a communication device is provided, the device including at least one processor and a memory, the at least one processor being used to execute the methods of the first aspect or any possible implementation thereof.

[0041] In a sixth aspect, a communication device is provided, the device including at least one processor and a memory, the at least one processor being configured to perform the methods of the second aspect above or any possible implementation thereof.

[0042] In a seventh aspect, a communication device is provided, the device including at least one processor and interface circuitry, the at least one processor being configured to perform the methods of the first aspect or any possible implementation thereof.

[0043] Eighthly, a communication device is provided, the device including at least one processor and interface circuitry, the at least one processor being configured to perform the methods of the second aspect above or any possible implementation thereof.

[0044] Ninthly, a terminal device is provided, which may be a simple-capability terminal device. The terminal device includes the communication device provided in the third aspect above, or the terminal device includes the communication device provided in the fifth aspect above, or the terminal device includes the communication device provided in the seventh aspect above.

[0045] In a tenth aspect, a network device is provided, which includes the communication device provided in the fourth aspect above, or the terminal device includes the communication device provided in the sixth aspect above, or the terminal device includes the communication device provided in the eighth aspect above.

[0046] Eleventhly, a computer program product is provided, comprising a computer program that, when executed by a processor, performs a method in the first aspect or any possible implementation thereof, or performs a method in the second aspect or any possible implementation thereof.

[0047] In a twelfth aspect, a computer-readable storage medium is provided, wherein a computer program is stored therein, which, when executed, is used to perform a method in the first aspect or any possible implementation thereof, or to perform a method in the second aspect or any possible implementation thereof.

[0048] In a thirteenth aspect, a communication system is provided, which includes the aforementioned simplified terminal device and network device. Optionally, the communication system may also include a terminal device with normal capabilities.

[0049] In a fourteenth aspect, a chip is provided, comprising: a processor for calling and running a computer program from a memory, such that a communication device having the chip mounted performs a method of the first aspect or any possible implementation thereof, or performs a method of the second aspect or any possible implementation thereof.

[0050] This application provides a method and communication apparatus for system information transmission. By releasing / re-reading the field (parameter) for the DMRS location of Type A PDSCH in the MIB, for example, this field can be the DMRS-Type A-Position field in the MIB, used to indicate that a simplified capability terminal device can access the NR system and obtain SIB1. This allows simplified capability terminal devices to sequentially and quickly obtain SIB1 and access the system, achieving uplink synchronization and cell selection, etc. This ensures that simplified capability terminal devices can communicate normally and improves communication efficiency. Attached Figure Description

[0051] Figure 1This is a schematic diagram of one possible structure of a synchronization signal block.

[0052] Figure 2 This is a schematic diagram of the architecture of a mobile communication system applicable to an embodiment of this application.

[0053] Figure 3 This is a schematic interactive diagram illustrating an example of a system information transmission method provided in an embodiment of this application.

[0054] Figure 4 This is a schematic interactive diagram illustrating another example of a system information transmission method provided in the embodiments of this application.

[0055] Figure 5 This is a schematic interactive diagram illustrating another example of a system information transmission method provided in the embodiments of this application.

[0056] Figure 6 This is a schematic block diagram of a communication device provided in an embodiment of this application.

[0057] Figure 7 This is a schematic block diagram of another communication device provided in the embodiments of this application.

[0058] Figure 8 This is a schematic block diagram of another example of a communication device provided in the embodiments of this application.

[0059] Figure 9 This is a schematic block diagram of another communication device provided in the embodiments of this application.

[0060] Figure 10 This is a schematic block diagram of the terminal device provided in the embodiments of this application.

[0061] Figure 11 This is a schematic block diagram of another terminal device provided in the embodiments of this application.

[0062] Figure 12 This is a schematic block diagram of a network device provided in an embodiment of this application. Detailed Implementation

[0063] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0064] The technical solutions of this application embodiment can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD) system, Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system, future 5th Generation (5G) system, New Radio (NR) or other future types of communication systems, etc.

[0065] The terminal device in this application embodiment can refer to user equipment, access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device. The terminal device can also be a cellular phone, cordless phone, Session Initiation Protocol (SIP) phone, Wireless Local Loop (WLL) station, Personal Digital Assistant (PDA), handheld device with wireless communication capabilities, computing device or other processing device connected to a wireless modem, in-vehicle device, wearable device, terminal device in future 5G networks, or terminal device in future evolved Public Land Mobile Network (PLMN), etc., and this application embodiment does not limit this to these categories.

[0066] The network device in this application embodiment can be a device for communicating with terminal devices. The network device can be a base station (BTS) in a Global System of Mobile communication (GSM) system or Code Division Multiple Access (CDMA), a base station (NodeB, NB) in a Wideband Code Division Multiple Access (WCDMA) system, an evolved NodeB (eNB or eNodeB) in an LTE system, a radio controller in a Cloud Radio Access Network (CRAN) scenario, or a relay station, access point, vehicle-mounted device, wearable device, and network device in future 5G networks, future evolved PLMN networks, or other types of future communication systems. This application embodiment is not limited to these categories.

[0067] In this embodiment, the terminal device or network device includes a hardware layer, an operating system layer running on top of the hardware layer, and an application layer running on top of the operating system layer. The hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also called main memory). The operating system can be any one or more computer operating systems that implement business processing through processes, such as Linux, Unix, Android, iOS, or Windows. The application layer includes applications such as browsers, address books, word processing software, and instant messaging software. Furthermore, this embodiment does not specifically limit the specific structure of the execution entity of the method provided in this embodiment, as long as it can communicate according to the method provided in this embodiment by running a program that records the code of the method provided in this embodiment. For example, the execution entity of the method provided in this embodiment can be a terminal device or a network device, or a functional module in the terminal device or network device that can call and execute a program.

[0068] Furthermore, various aspects or features of this application can be implemented as methods, apparatus, or articles of manufacture using standard programming and / or engineering techniques. The term "article of manufacture" as used herein encompasses a computer program accessible from any computer-readable device, carrier, or medium. For example, computer-readable media may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks, or magnetic tapes), optical discs (e.g., compact discs (CDs), digital versatile discs (DVDs), etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memory (EPROMs), cards, sticks, or key drives, etc.). Additionally, the various storage media described herein may represent one or more devices and / or other machine-readable media for storing information. The term "machine-readable medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and / or carrying instructions and / or data.

[0069] The synchronization signal block, also known as the synchronization sigal (SS) / physical broadcast channel block (PBCH block), is a signal structure applicable to 5G and later communication systems. Figure 1 This is a schematic diagram of a possible structure for a synchronization signal block, such as... Figure 1 As shown, the synchronization block includes the Primary Synchronization Signal (PSS), the Secondary Synchronization Signal (SSS), and the Physical Broadcast Channel (PBCH). The PSS and SSS primarily help user equipment identify the cell and synchronize with it, while the PBCH contains basic system information such as the system frame number and intra-frame timing information. Successful reception of the synchronization block by the user equipment is a prerequisite for its access to the cell.

[0070] After the terminal device is powered on, it needs to connect to a cell by performing a cell search (random access procedure). This mainly involves the following processes:

[0071] The terminal equipment completes orthogonal frequency division multiplexing (OFDM) symbol boundary synchronization and coarse frequency synchronization through PSS and obtains the cell identity (ID)2.

[0072] The terminal device obtains cell identifier 1 (ID1) through SSS and calculates the cell ID using cell ID1 and cell ID2. Cell ID = 3 × cell ID1 + cell ID2. Furthermore, the secondary synchronization signal can also be used for radio resource management related measurements and radio link detection related measurements.

[0073] The terminal device completes the cell search and synchronization process by correctly receiving the master information block (MIB) carried in the PBCH. Specifically, the terminal device obtains the system frame number and half-frame indication by receiving the MIB message, and completes radio frame timing and half-frame timing. At the same time, the terminal device determines the time slot and symbol of the current synchronization signal by using the synchronization broadcast block index (SSB Index) in the MIB message and the synchronization broadcast block set pattern used in the current frequency band, and completes time slot synchronization.

[0074] Typically, terminal devices need to go through the following process to properly interpret multiple system information:

[0075] Time and frequency synchronization and cell ID acquisition of terminal devices are achieved through PSS and SSS.

[0076] Channel estimation is performed using the modulation and demodulation reference signal (DMRS) in the PBCH, and the PBCH is correctly demodulated to read the MIB message in the PBCH.

[0077] The configuration information of the physical downlink control channel (PDCCH), including the control resource set (Coreset) and search space (SS), is obtained from the messages in the MIB to interpret the system information block type 1 (SIB1) message. Based on the Coreset and SS, the PDCCH is detected. Then, according to the scheduling instructions detected in the PDCCH (i.e., the scheduling instructions of the downlink control information (DCI) in the PDCCH), the physical downlink share channel (PDSCH) is detected. For example, the DCI may include: the time-frequency resources corresponding to the PDSCH, the data modulation scheme corresponding to the PDSCH transmission information, the transmission block size (TBS), power configuration, etc. After receiving the PDSCH, the SIB1 information in the PDSCH is read. SIB1 is carried in the PDSCH. Alternatively, the MIB can be considered to include the scheduling information of SIB1.

[0078] Based on the relevant configuration information included in SIB1, other system information (SI) is obtained, which is used by the terminal device for uplink synchronization.

[0079] Table 1 is an illustrative table showing the various bits (fields) carried by the MIB and their functional descriptions.

[0080] Table 1

[0081]

[0082]

[0083] Currently, NR is discussing the access of simplified capability terminal devices (SLTs) to the NR system. SLTs, designed for massive machine-type communication (mMTC), support smaller bandwidth, fewer antennas, lower power consumption, and lower cost. SLTs can also be called NR-Light terminal devices. Therefore, NR-Light terminal devices differ significantly from traditional enhanced mobile broadband (eMBB) and ultra-reliable low-latency communication (URLLC) terminal devices in terms of access capabilities and supported bandwidth.

[0084] It should be noted that typeA is one type of PDSCH mapping type. For example, PDSCH mapping types can include typeA and typeB. Optionally, these types can be distinguished by DMRS type. When performing time-frequency resource mapping with PDSCH, the starting position S of the mapping and the length L of the continuous physical resource block (PRB) (which can also be understood as the number of consecutive PRBs) need to be considered. For the two mapping types, typeA and typeB, the range of values ​​for S, L, and the sum of S and L differ. No specific limitations are made here; please refer to the descriptions in existing technologies or possible definitions in future communication systems. In addition, typeA and typeB simply represent two different types. Alternatively, typeA can be called the first type, and typeB can be called the second type, depending on whether it can distinguish different PDSCH mapping types, or it can also be used to distinguish other possible PDSCH types.

[0085] Currently, for terminal devices accessing the NR system, it is necessary to read the MIB information indication carried in the PBCH, correctly interpret the SIB1-related PDCCH in the corresponding Coreset and search space, and finally obtain SIB1. However, for simplified capability terminal devices, because their access capabilities and supported bandwidth are lower than those of traditional eMBB and URLLC terminal devices, their process of accessing the system and obtaining SIB1 differs from that of traditional eMBB and URLLC terminal devices. For example, simplified capability terminal devices support fewer blind detection attempts and have less bandwidth. Dedicated configuration information (or SIB1 scheduling information) related to obtaining SIB1 needs to be designed for simplified capability terminal devices so that they can also sequentially and quickly access the system and obtain SIB1, thereby achieving system access, cell selection, and uplink synchronization. However, currently there is no special design for how simplified capability terminal devices access the NR system and obtain SIB1. Especially when traditional eMBB and URLLC terminal devices and simplified capability terminal devices coexist, more messages in the MIB are needed to indicate different access information for different types of terminals. However, the number of available free bits in the MIB is relatively small. Therefore, how to indicate the access of different types of terminals to the NR system is an urgent problem to be solved.

[0086] In view of this, this application provides a method for transmitting the Master Information Block (MIB). By releasing / re-interpreting the DMRS position field (parameter) for Type A PDSCH in the MIB, such as the DMRS-Type A-Position field in the MIB, it instructs a simplified-capability terminal device to access the NR system and obtain SIB1. This allows simplified-capability terminal devices to quickly obtain SIB1 and access the system, enabling uplink synchronization and cell selection. This ensures normal communication for simplified-capability terminal devices and improves communication efficiency.

[0087] To facilitate understanding of the embodiments of this application, firstly, in conjunction with Figure 2 A brief introduction to the communication system applicable to the embodiments of this application is provided.

[0088] Figure 2 This is a schematic diagram of a communication system 100 applicable to the main system information transmission method in embodiments of this application. Figure 2As shown, the communication system 100 includes four communication devices, such as network device 110 and terminal devices 121 to 123. Terminal devices 121 to 123 can all be basic terminal devices, or they may include basic terminal devices as well as traditional eMBB and URLLC terminal devices. When accessing the system, at least one of the terminal devices 121 to 123 can use the method provided in this application to connect to the network device 110 and obtain SIB1.

[0089] It should be understood that Figure 2 The communication system shown can also include more network nodes, such as terminal devices or network devices. Figure 2 The network devices or terminal devices included in the communication system shown can be any of the various types of network devices or terminal devices described above. The embodiments of this application are not shown one by one in the figures.

[0090] The following is combined with Figure 3 This application provides a detailed description of the MIB transmission method. Figure 3 This is a schematic interactive diagram illustrating a MIB transmission method 200 according to an embodiment of this application. Method 200 can be applied to... Figure 2 The scenario shown can, of course, be applied to other communication scenarios as well, and the embodiments of this application are not limited to this.

[0091] It should also be understood that, in the embodiments of this application, the method is described using the first terminal device and the network device as examples of the execution subjects. This is not a limitation, but rather an example; the execution subject of the method can also be a chip, chip system, or processor applied to the first terminal device and the network device. The first terminal device can be a simple terminal device.

[0092] like Figure 3 As shown, Figure 3 The method 200 shown may include S210 to S240. The following is in conjunction with... Figure 3 The steps in method 200 are explained in detail.

[0093] S210, the network device determines a first MIB, which includes parameters indicating the location of the demodulation reference signal DMRS of type A PDSCH. These parameters are used by the first terminal device to acquire a first system information block SIB1, which includes access configuration information of the first terminal device. The first device can be a simple-capability terminal device. In the following description, the first terminal device will be used as an example of a simple-capability terminal device. In this application, the terms "first device" and "first terminal device" can be used interchangeably. Alternatively, type A PDSCH in this application can also be called a first type PDSCH, which performs resource mapping through a first type mapping method.

[0094] It should be noted that the "access configuration information" described in this application refers to the configuration information required for the corresponding terminal device to access the system. The access configuration information of the first device can be the configuration information for the first device to access the system, and the access configuration information of the second device can be the configuration information for the second device to access the system. Therefore, access configuration information can be understood as the necessary system information required for data transmission between the terminal device and the network device. For example, configuration information of the Random Access Channel (RACH), configuration information of cell camping and selection, configuration information for initiating access services, and scheduling information of other system messages, etc. This application does not limit the specific content included in the access configuration information.

[0095] S220, the network device sends the first MIB to the first terminal device. Correspondingly, the first terminal device receives the first MIB.

[0096] S230, the first terminal device obtains the parameters in the first MIB used to indicate the location of the demodulation reference signal DMRS of the type A physical downlink shared channel PDSCH. The parameters indicating the location of the demodulation reference signal DMRS of the type A PDSCH are used by the first terminal device to obtain the first system information block SIB1. The first SIB1 includes the access configuration information of the first terminal device.

[0097] S240, the first terminal device obtains the first SIB1 based on the parameter.

[0098] Specifically, in S210, during cell access and selection, the network device determines (or generates, i.e., the network device must determine or generate the first MIB before sending it) the first MIB. The first MIB can be carried in the first PBCH sent by the network device. The first MIB includes parameters indicating the position of the demodulation reference signal DMRS for Type A PDSCH. For example, the parameters indicating the position of the demodulation reference signal DMRS for Type A PDSCH can be the Dmrs-TypeA-Position field included in the first MIB. Information regarding the first MIB can be found in Table 1, and for simplicity, it will not be repeated here.

[0099] It should be understood that in the following description of this application, the parameter (field) used to indicate the position of the demodulation reference signal DMRS of type A PDSCH will be described using the Dmrs-TypeA-Position field as an example. It should be understood that in the embodiments of this application, the parameter used to indicate the position of the demodulation reference signal DMRS of type A PDSCH may also be other fields (parameters) included in the first MIB or newly added fields (parameters) in the first MIB, as long as the field (parameter) is used to indicate the position of the demodulation reference signal DMRS of type A PDSCH, this application does not impose any restrictions here.

[0100] It should also be understood that, in the embodiments of this application, other fields of the first MIB (e.g., reserved fields) can also be used by the first terminal device to obtain the first SIB1. That is, the field (parameter) used by the first terminal device to obtain the first SIB1 may not be the parameter (field) indicating the position of the demodulation reference signal DMRS of type A PDSCH, but rather other fields (parameters) of the first MIB, which are used by the first terminal device to obtain the first SIB1. This application does not impose any limitations here.

[0101] The PDSCH mapping type primarily determines the time-domain symbol position of the DMRS of the PDSCH. Specifically, the Dmrs-TypeA-Position field indicates the position of the first DMRS of the PDSCH within the time unit (e.g., time slot) of the PDSCH when the PDSCH mapping type is A. Dmrs-TypeA-Position can indicate that the first DMRS is located in the 3rd or 4th time-domain symbol of the time slot (slot) of the PDSCH.

[0102] It should be understood that, in this embodiment, for the first terminal device (a simplified terminal device), regardless of whether the value of the Dmrs-TypeA-Position field is 0 or 1, when the mapping type of the PDSCH carrying the first SIB1 is type A, the time domain symbol position of the first DMRS of the PDSCH corresponding to the first terminal device (or the PDSCH carrying the first SIB1) is always the 4th time domain symbol within the time unit (e.g., time slot) of that PDSCH. That is, when the mapping type of the PDSCH corresponding to the first terminal device is fixed as type A, the position of the preceding DMRS symbol is the 4th time domain symbol.

[0103] In this embodiment of the application, the Dmrs-TypeA-Position field in the first MIB is used by the first terminal device to obtain the first SIB1, which includes the access configuration information of the first terminal device.

[0104] In S220, the network device sends the first MIB to the first terminal device. Specifically, after determining the first MIB, the network device sends it to the first terminal device via the first PBCH (or the first SSB). That is, the first MIB is carried in the first PBCH. The network device sends the first PBCH (or the first SSB) to the first terminal device, and the first PBCH (or the first SSB) carries the first MIB. Correspondingly, the first terminal device obtains the first MIB from the first PBCH by receiving it.

[0105] In S230, after the first terminal device obtains the first MIB, it reads the Dmrs-TypeA-Position field from the first MIB. The Dmrs-TypeA-Position field is used by the first terminal device to obtain the first SIB1. The first SIB1 corresponds to the first terminal device and includes the access configuration information of the first terminal device.

[0106] For example, the first SIB1 can be used for simple-capability terminal devices to perform system access and cell selection, as well as uplink synchronization.

[0107] Optionally, in this embodiment of the application, the first SIB1 may include one or more of the following information:

[0108] Cell selection parameters: necessary information for the first terminal device to determine whether the signal of this cell meets the cell camping conditions;

[0109] Access control parameters: necessary information for the first terminal device to determine whether a certain type of access service is allowed to be initiated;

[0110] The first terminal device's initial access-related channel configuration information and the configuration information required during random access;

[0111] The first terminal device requests configuration information via system messages;

[0112] Scheduling information for other system messages of the first terminal device;

[0113] Other information about the first terminal device, such as whether it supports Voice over Internet Protocol (VoIP) services.

[0114] In S240, the first terminal device obtains the Dmrs-TypeA-Position field. Based on the indication of the Dmrs-TypeA-Position field, it can obtain the first SIB1. Based on the first SIB1, the first terminal device can then sequentially and quickly access the system and obtain the SIB1, thereby achieving system access, cell selection, and uplink synchronization. This ensures that terminal devices with limited capabilities can communicate normally and improves communication efficiency.

[0115] It should be understood that for a terminal device with normal capabilities (hereinafter referred to as the second terminal device, or the second apparatus), such as a traditional enhanced mobile broadband (eMBB) terminal device and an ultra-reliable low-latency communication (URLLC) terminal device, the second terminal device can obtain the configuration information related to SIB1 (hereinafter referred to as the second SIB1) corresponding to the second terminal device based on the pdcch-ConfigSIB1 field in the first MIB. The pdcch-ConfigSIB1 field indicates the configuration of the PDCCH related to the second SIB1, including the Coreset and search space where the PDCCH resides, thereby obtaining the second SIB1. The second SIB1 includes information related to cell access, cell selection, and uplink synchronization for the second terminal device. In this application, the terms "second apparatus" and "second terminal device" can be used interchangeably.

[0116] It should also be understood that for the second terminal device, when the mapping type of the PDSCH carrying the second SIB1 is Type A, it is necessary to determine, according to the indication of Dmrs-TypeA-Position, whether the time domain symbol position of the first DMRS of the PDSCH corresponding to the second terminal device (or the PDSCH carrying the second SIB1) is the 4th time domain symbol or the 3rd time slot symbol within the time unit (e.g., time slot) of the PDSCH. For example, when DMRS-TypeA-Position = 0, the preceding DMRS of the PDSCH starts from the 3rd time domain symbol; when DMRS-TypeA-Position = 1, the preceding DMRS of the PDSCH starts from the 4th time domain symbol.

[0117] The MIB transmission method provided in this application redefines the content of the field (parameter) indicating the position of the demodulation reference signal DMRS for Type A PDSCH in the MIB. For example, this field can be the DMRS-TypeA-Position field in the MIB. This field is defined to allow simplified-capability terminal devices to obtain the corresponding SIB1, enabling them to sequentially and quickly access the system and achieve uplink synchronization and cell selection. This ensures normal communication for simplified-capability terminal devices and improves communication efficiency.

[0118] Optionally, in some possible implementations of this application, Dmrs-TypeA-Position is used to indicate the control resource set corresponding to the first SIB1. For example... Figure 4 As shown, Figure 4 This is a schematic flowchart of a MIB transmission method in some embodiments of this application. Figure 3 Based on the method steps shown, in S240 of this method, the first terminal device obtains the first SIB1 according to the Dmrs-TypeA-Position field, including: S241.

[0119] S241, the first terminal device detects the PDCCH on the control resource set corresponding to the first SIB1 indicated by the Dmrs-TypeA-Position field. The PDCCH is used to schedule the physical downlink shared channel PDSCH carrying the first SIB1.

[0120] S242, the first terminal device acquires the first SIB1 carried on the Physical Downlink Shared Channel (PDSCH).

[0121] Figure 4 The steps S210, S220, and S230 shown can be referred to the above descriptions of S210, S220, and S230. For the sake of brevity, they will not be repeated here.

[0122] In S241, the Dmrs-TypeA-Position field can indicate the control resource set (hereinafter referred to as the first control resource set) corresponding to the first SIB1.

[0123] The first terminal device can determine the time-frequency position of the first control resource set based on the Dmrs-TypeA-Position field. A control resource set can be understood as using specific time-frequency resources in the system to carry control channels. These specific time-frequency resources are pre-notified to the terminal device via higher-layer signaling, allowing the terminal device to detect control channels on these specific time-frequency resources at subsequent specific detection times. The control resource set includes the time-frequency resource information occupied by the network device for transmitting control channels (e.g., PDCCH). The network device can configure one or more control resource sets for the terminal device, and can transmit control channels to the terminal device on any control resource set corresponding to the terminal device. The terminal device can receive control channels transmitted by the network device on the time-frequency resources indicated by the control resource set. The first terminal device can determine the time-frequency position of a control resource set (the first control resource set) based on the indication of the Dmrs-TypeA-Position field. The time-frequency position of the first control resource set can be predefined by the protocol or configured by higher-layer signaling. The first terminal device can detect PDCCH on the first control resource set. The PDCCH carries a DCI (Data Interchange Component) which is used to schedule the PDSCH carrying the first SIB1. For example, the DCI may include: the time-frequency resources corresponding to the PDSCH, the data modulation scheme corresponding to the PDSCH transmission information, the Transmission Block Size (TBS), power configuration, etc. The first terminal device can receive the PDSCH according to the DCI.

[0124] In S242, the first terminal device receives the PDSCH and can then obtain the first SIB1 carried on the PDSCH.

[0125] It should be understood that, in the embodiments of this application, the time-frequency position of the control resource set indicated by the Dmrs-TypeA-Position field can be predefined by the protocol or configured by higher-layer signaling. The time-frequency position of the first SIB1 on the PDSCH can also be predefined by the protocol or configured by higher-layer signaling. For example, when the Dmrs-TypeA-Position field indicates 1, it corresponds to a pre-configured or pre-defined control resource set. When the Dmrs-TypeA-Position field indicates 0, it corresponds to another pre-configured or pre-defined control resource set. That is, there can be a correspondence between the value indicated by the Dmrs-TypeA-Position field and the control resource set. This correspondence can also be predefined by the protocol or configured by higher-layer signaling.

[0126] By using the Dmrs-TypeA-Position field to indicate the control resource set corresponding to the first SIB1, the first terminal device can obtain the first SIB1. This improves the accuracy of the first terminal device obtaining the first SIB1 and facilitates implementation.

[0127] Since the first parameter in the first MIB (e.g., the pdcch-ConfigSIB1 field) can also indicate the control resource set of the corresponding second SIB1 of the second terminal device, in this embodiment, the Dmrs-TypeA-Position field indicates that the control resource set (hereinafter referred to as the first control resource set) and the control resource set indicated by the pdcch-ConfigSIB1 field (hereinafter referred to as the second control resource set) may be the same or different. The second control resource set is used by the second terminal device to obtain the second SIB1. The second SIB1 includes the access configuration information of the second terminal device.

[0128] Optionally, the second SIB1 may include one or more of the following information:

[0129] Cell selection parameters: necessary information for the second terminal device to determine whether the signal of this cell meets the cell camping conditions;

[0130] Access control parameters: necessary information for the second terminal device to determine whether a certain type of access service is allowed to be initiated;

[0131] The second terminal device's initial access-related channel configuration information and the configuration information required during random access;

[0132] The second terminal device requests configuration information via system messages.

[0133] Scheduling information for other system messages of the second terminal device;

[0134] Other information.

[0135] Since the time-frequency position of the Coreset is predefined during the initial access process, the Coreset during the initial access process can be called Coreset0. That is, during the initial access process, the pdcch-ConfigSIB1 field in the first MIB indicates Coreset0. The frequency range (frequency domain position and bandwidth) of Coreset0 is exactly the same as the bandwidth part (BWP) during the initial access. BWP can be understood as the time-frequency resource used to transmit the first PBCH (SSB).

[0136] Therefore, in this embodiment, when the first control resource set indicated by the Dmrs-TypeA-Position field is different from the second control resource set indicated by the pdcch-ConfigSIB1 field, the number of physical resource blocks (PRBs) occupied by the first control resource set, or the number of orthogonal frequency division multiplexing (OFDM) symbols occupied by the first control resource set, can be predefined or configured by higher layers. Alternatively, the deviation between the lower boundary of the first control resource set and the lower boundary of the first PBCH can be predefined or configured by higher layers, and this deviation can be in units of resource blocks (RBs) corresponding to the subcarrier spacing of Coreset0.

[0137] Optionally, the first control resource set indicated by the Dmrs-TypeA-Position field can also be Coreset0.

[0138] During initial access, the pdcch-ConfigSIB1 field in the first MIB can also indicate the deviation between the lower boundary of Coreset0 and the lower boundary of the first PBCH, and this deviation can be in units of resource blocks (RBs) corresponding to the subcarrier spacing of Coreset0. For example, the high 4 bits of the pdcch-ConfigSIB1 field can be used to indicate this.

[0139] Optionally, in some embodiments of this application, when the first control resource set is the same as the second control resource set, the first terminal device can obtain the first SIB1 in the PDSCH based on the DCI carried by the PDCCH in the first control resource set and the first information, where the first information is predefined or configured through higher-layer signaling.

[0140] Specifically, when the first control resource set is the same as the second control resource set, for example, both are Coreset0. Furthermore, both the first terminal device and the second terminal need to detect the PDCCH on this control resource set; that is, the first terminal device and the second terminal device detect the DCI on the same control resource set. The first terminal device and the second terminal device can read the DCI in different ways. For example, suppose the DCI is 10 bits long, including indications of four different fields. For the first terminal device, the meaning of some bits (or some fields) in these 10 bits can be predetermined or configured by higher-layer signaling. For example, the modulation and coding scheme (MCS) field (or parameter MCS) in the DCI indicates a predefined MCS. When reading the DCI, the first terminal device does not need to read the MCS field; the MCS field here can be the aforementioned first information. That is, the first information can be information indicated by certain fields in the DCI, which is predefined or configured by higher-layer signaling. When reading the DCI, the first terminal device does not read the fields in the DCI corresponding to the first information, but instead utilizes predefined information or information configured by higher-layer signaling. For fields in the DCI that are not predefined or configured via higher-layer signaling, the first terminal device needs to read the information from these fields. In other words, the first terminal device can obtain the first SIB1 in the PDSCH based on the DCI carried by the PDCCH in the first control resource set and the first information. The first information can be information indicated by certain fields in the DCI, and this first information is either predefined or configured via higher-layer signaling.

[0141] For the second terminal device, the entire DCI needs to be read to obtain the second SIB1 in the PDSCH. In other words, the length of the DCI that the first and second terminal devices need to read is different for the same DCI. For the first terminal device, after blindly detecting the DCI in the PDCCH, some bits in the DCI do not need to be interpreted; predefined first information can be directly used.

[0142] Optionally, in this embodiment, the first information may include one or more of the following: MCS, HARQ process number, New data indicator (NDI), and redundant version (RV). The first terminal device may not need to read one or more of the MCS, HARQ process number, NDI, and RV fields in the DCI, and can directly use predefined values ​​or values ​​configured through higher-layer signaling. However, for the second terminal device, all of these fields need to be read.

[0143] When the first control resource set is the same as the second control resource set, for the first terminal device, by predefined or configured information or values ​​of certain fields (parameters) in the DCI through higher-level signaling, when the first terminal device and the second terminal detect the same DCI, the length (detection range) of the DCI read by the first terminal device can be reduced, effectively reducing the complexity of the first terminal device needing to read the DCI and reducing the energy consumption of the first terminal device.

[0144] Optionally, in some embodiments of this application, when the first control resource set corresponding to the first SIB1 is the same as the second control resource set corresponding to the second SIB1, the same control resource can be associated with two different PDCCHs. That is, although the first control resource set corresponding to the first SIB1 is the same as the second control resource set corresponding to the second SIB1, the first control resource set or the second control resource can correspond to (including) two or more PDCCHs. To distinguish them, the PDCCH corresponding to the first SIB1 is called the first PDCCH, and the PDCCH corresponding to the second SIB1 is called the second PDCCH. The first PDCCH and the second PDCCH are different. The DCI corresponding to the first SIB1 (called the first DCI) and the DCI corresponding to the second SIB1 (called the second DCI) are different. In this case, the first terminal device obtains the control resource set through the Dmrs-TypeA-Position field and needs to further distinguish which PDCCH on the control resource set the first DCI is detected on. Therefore, the first PDCCH can be scrambled using the first radio access network temporary identifier (RNTI), and the first PDCCH carries the first DCI. A second PDCCH is scrambled using a second RNTI, and the second PDCCH carries a second DCI. The correspondence between the PDCCH and its corresponding scrambling method can be predefined or configured via higher-layer signaling. For example, a first terminal device can descramble a PDCCH (DCI) using the first RNTI on the control resource set indicated by the Dmrs-TypeA-Position field. The successfully descrambled PDCCH (DCI) becomes the first PDCCH. The first terminal device can then obtain the first SIB in the PDSCH based on the first DCI carried by the first PDCCH. Similarly, a second terminal device can descramble a PDCCH (DCI) using the second RNTI on the same control resource set. The successfully descrambled PDCCH (DCI) becomes the second PDCCH. The first terminal device can then obtain the second SIB in the PDSCH based on the second DCI carried by the second PDCCH. The first RNTI and the second RNTI are different.

[0145] Optionally, in this application example, the first RNTI can be a first universal terrestrial radio access network temporary identifier (U-RNTI) or a first cell network temporary identifier (C-RNTI). The second RNTI can be a second U-RNTI or a second C-RNTI. The first U-RNTI and the second U-RNTI are different, and the first C-RNTI and the second C-RNTI are different.

[0146] When the first control resource set is the same as the second control resource set, and the same control resource can include multiple PDCCHs, different RNTIs can be used to scramble different PDCCHs, and the correspondence between different RNTIs and different PDCCHs can be predefined in the higher-layer signaling configuration. In this way, the first terminal device can determine the corresponding first PDCCH based on the first RNTI used to descramble the PDCCH, and thus obtain the first SIB1 carried on the first PDCCH using the first DCI. This allows the first terminal device to quickly access the system and obtain the first SIB1, improving communication efficiency.

[0147] Optionally, in some possible implementations of this application, the Dmrs-TypeA-Position field can be used to indicate that the first SIB1 is located at a first time-frequency position. This first time-frequency position is predefined or configured via higher-layer signaling.

[0148] Specifically, since the first SIB1 is carried on the PDSCH, the Dmrs-TypeA-Position field can also indicate the first terminal device's receiving position on the PDSCH at a first time-frequency location. The first terminal device can determine the time-frequency location of the first SIB1 on the PDSCH without blindly detecting the PDCCH. This first time-frequency location is predefined or configured via higher-layer signaling. For example, when the Dmrs-TypeA-Position field indicates 1, it corresponds to a pre-configured or pre-defined first time-frequency location. Based on the value indicated by the Dmrs-TypeA-Position field, the first terminal device can determine that it will receive the first SIB1 at that first time-frequency location on the PDSCH. When the Dmrs-TypeA-Position field indicates 0, it corresponds to another pre-configured or pre-defined time-frequency location. Based on the value indicated by the Dmrs-TypeA-Position field, the first terminal device can determine that it will receive the first SIB1 at that time-frequency location on the PDSCH. That is, there can be a correspondence between the value indicated by the Dmrs-TypeA-Position field and the time-frequency location. This mapping can be predefined by the protocol or configured by higher-level signaling.

[0149] The Dmrs-TypeA-Position field indicates the time-frequency position of the first SIB1 on the PDSCH. The first terminal can directly receive the first SIB1 on the PDSCH based on the time-frequency resource position indicated by the Dmrs-TypeA-Position field. This can improve the accuracy and efficiency of the first terminal device in obtaining the first SIB1 and is easy to implement.

[0150] Optionally, when the Dmrs-TypeA-Position field is 0 or 1, it can also instruct the first terminal device to obtain the control resource set corresponding to the first SIB1 according to the first parameter in the first MIB (e.g., the pdcch-ConfigSIB1 field), and detect the PDCCH on the control resource set corresponding to the first SIB1, wherein the PDCCH is used to schedule the physical downlink shared channel (PDSCH) carrying the first SIB. Further, the first SIB1 carried on the physical downlink shared channel (PDSCH) is obtained.

[0151] Optionally, in some possible implementations of this application, the Dmrs-TypeA-Position field can be used to indicate the first PBCH corresponding to the first SIB1. For example... Figure 5 As shown, Figure 5 This is a schematic flowchart of a MIB transmission method in some embodiments of this application. Figure 3Based on the method steps shown, in S240 of this method, the first terminal device obtains the first SIB1 according to the Dmrs-TypeA-Position field, including: S243.

[0152] S243, the first terminal device obtains the configuration information of the first SIB1 included in the first PBCH according to the first PBCH indicated by Dmrs-TypeA-Position, wherein the time and frequency resource position of the first PBCH is predefined or configured by higher layer signaling.

[0153] S244, the first terminal device obtains the first SIB1 according to the configuration information of the first SIB1.

[0154] Figure 5 The steps S210, S220, and S230 shown can be referred to the above descriptions of S210, S220, and S230. For the sake of brevity, they will not be repeated here.

[0155] In S243, the Dmrs-TypeA-Position field can be used to indicate the first PBCH corresponding to the first SIB1. In S220, the network device can send the first MIB to the first terminal device via the PBCH. For distinction, the PBCH sent by the network device in S220 is referred to as the second PBCH (second SSB). The second PBCH (second SSB) includes the first MIB, and the first MIB includes the Dmrs-TypeA-Position field. The Dmrs-TypeA-Position field is used by the first terminal device to obtain the first system information block SIB1. When the Dmrs-TypeA-Position field indicates the first PBCH, the first terminal device needs to re-receive the first PBCH. The time-frequency resource position of this first PBCH is predefined or configured through higher-layer signaling. For example, when the Dmrs-TypeA-Position field indicates 1, it corresponds to a pre-configured or pre-defined first PBCH. When the Dmrs-TypeA-Position field indicates 0, it corresponds to another pre-configured or pre-defined first PBCH. Alternatively, when the Dmrs-TypeA-Position field indicates 0, it indicates that the first PBCH corresponding to the first SIB1 is the same as the second PBCH. That is, the first terminal device can associate the first PBCH according to the Dmrs-TypeA-Position field. There can also be a correspondence between the value indicated by the Dmrs-TypeA-Position field and the PBCH. This correspondence can be predefined by the protocol or configured by higher-layer signaling. The first terminal device determines the time-frequency resource position of the first PBCH according to the first PBCH indicated by Dmrs-TypeA-Position, and then receives the first PBCH. After receiving the first PBCH, it obtains the configuration information of the first SIB1 included in the first PBCH. The first PBCH may include a MIB, and the configuration information of the first SIB1 may be included in the MIB. The content included in the MIB may be similar to that shown in Table 1. The configuration information of the first SIB1 may include: the control resource set and search space corresponding to the first SIB1, the time domain symbol position of the first DMRS when the first terminal device maps the type A PDSCH, etc. For example, the MIB in the first PBCH may include the pdcch-ConfigSIB1 field, which indicates the configuration of the PDCCH associated with the first SIB1, including the Coreset and search space where the PDCCH is located. The MIB in the first PBCH may include the Dmrs-TypeA-Position field, which indicates the time-domain symbol position of the first DMRS when mapping the Type A PDSCH corresponding to the first terminal device.The first terminal device can then blindly detect the PDCCH on the control resource set indicated by the pdcch-ConfigSIB1 field, and then receive the PDSCH based on the DCI indication in the detected PDCCH. After receiving the PDSCH, it reads the information of the first SIB1 in the PDSCH, thereby obtaining the first SIB1.

[0156] The Dmrs-TypeA-Position field indicates the first PBCH corresponding to the first SIB1. The first terminal can directly associate with the first PBCH based on the Dmrs-TypeA-Position field, obtain the configuration information of the first SIB1 from the first PBCH, and further obtain the first SIB1. This allows the first terminal device to sequentially and quickly access the system and achieve uplink synchronization and cell selection, ensuring that terminal devices with simple capabilities can communicate normally and improving communication efficiency.

[0157] Optionally, in some other possible embodiments of this application, the Dmrs-TypeA-Position field can be used to indicate whether the first SIB1 has been updated.

[0158] Specifically, since the Dmrs-TypeA-Position field is used to indicate to the first terminal device that it acquired the first SIB1, it can also be used to indicate whether the first SIB1 has been updated. Whether an update exists is relative to a previously acquired SIB1 on the first terminal device. A previously acquired SIB1 is the SIB1 that the first terminal device could understand as having previously (or at least previously) interpreted from the SSB.

[0159] When the Dmrs-TypeA-Position field indicates that the first SIB1 has not been updated (e.g., when the Dmrs-TypeA-Position field is 1 or 0), the first terminal device can directly determine the previously acquired SIB1 as the first SIB1. The first terminal device does not need to perform the various steps and processes required to obtain the first SIB1 based on the configuration information included in the currently received first MIB. This reduces the complexity of obtaining the first SIB1 for the first terminal device and lowers its power consumption.

[0160] When the Dmrs-TypeA-Position field indicates that the first SIB1 has been updated, for example, when the Dmrs-TypeA-Position field is 1 or 0, it indicates that the first SIB1 has been updated. This means that the first SIB1 is different from the previously acquired SIB1 on the first terminal device. Therefore, the first terminal device needs to obtain the first SIB1 based on the first SIB1 configuration information included in the currently received first MIB. For example, the first terminal device needs to obtain the control resource set corresponding to the first SIB1 based on the pdcch-ConfigSIB1 field in the first MIB, and detect the PDCCH on the control resource set corresponding to the first SIB1. This PDCCH is used to schedule the Physical Downlink Shared Channel (PDSCH) carrying the first SIB. Further, the first SIB1 carried on the PDSCH is obtained.

[0161] The system information transmission method provided in this application releases / re-decodes the DMRS location field (parameter) for Type A PDSCH in the MIB. For example, this field can be the DMRS-Type A-Position field in the MIB, used to indicate that a simplified-capability terminal device can access the NR system and obtain SIB1. This allows simplified-capability terminal devices to sequentially and quickly obtain SIB1 and access the system, achieving uplink synchronization and cell selection, etc. This ensures that simplified-capability terminal devices can communicate normally and improves communication efficiency.

[0162] It should be understood that in the embodiments of this application, "predefined" can be understood as being defined by the protocol. "Signaling configuration" can be understood as being configured by higher-layer or physical-layer signaling. Higher-layer signaling may include, for example, radio resource control (RRC), medium access control (MAC) control element (CE), radio link control (RLC), etc. Physical-layer signaling may include, for example, downlink control information (DCI), signaling transmitted through a downlink physical-layer channel, such as PDCCH or PDSCH.

[0163] It should also be understood that the methods, situations, categories, and classifications of embodiments in this application are for the convenience of description only and should not constitute a special limitation. Various methods, categories, situations, and features in embodiments can be combined without contradiction.

[0164] It should also be 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, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0165] It should also be understood that the above is only to help those skilled in the art better understand the embodiments of this application, and is not intended to limit the scope of the embodiments of this application. Those skilled in the art can obviously make various equivalent modifications or changes based on the examples given above. For example, some steps in the above method 200 may be unnecessary, or new steps may be added, etc. Alternatively, any combination of two or more of the above embodiments may be used. Such modifications, changes, or combinations also fall within the scope of the embodiments of this application.

[0166] It should also be understood that the above description of the embodiments of this application focuses on highlighting the differences between the various embodiments. Any similarities or differences not mentioned can be referred to each other. For the sake of brevity, they will not be repeated here.

[0167] It should also be understood that in the embodiments of this application, "predefined" can be achieved by pre-storing the corresponding code, table or other means that can be used to indicate relevant information in the device (e.g., including terminal devices and network devices), and this application does not limit the specific implementation method.

[0168] The above combination Figures 1 to 5 The method for transmitting system information according to embodiments of this application has been described in detail. The following, in conjunction with... Figures 6 to 12 The communication device of the embodiments of this application will be described in detail.

[0169] Figure 6 A schematic block diagram of a communication device 300 according to an embodiment of this application is shown. The device 300 may correspond to the first terminal device described in the method 200 above, or it may be a chip or component applied to the first terminal device. Furthermore, each module or unit in the device 300 is used to perform each action or processing procedure performed by the first terminal device in the method 200 above.

[0170] like Figure 6 As shown, the device 300 includes a transceiver unit 310 and a processing unit 320. The transceiver unit 310 is used to perform specific signal transmission and reception under the drive of the processing unit 320.

[0171] Transceiver unit 310 is used to receive the first master information block (MIB);

[0172] Processing unit 320 is used to obtain parameters in the first MIB that indicate the location of the demodulation reference signal DMRS for the type A physical downlink shared channel PDSCH. These parameters are used to obtain the first system information block SIB1, which includes access configuration information of the first device.

[0173] The processing unit 320 is also used to obtain the first SIB1 based on the parameter.

[0174] The communication device provided in this application redefines the content of the field (parameter) indicating the position of the demodulation reference signal DMRS for Type A PDSCH in the MIB. For example, this field can be the DMRS-Type A-Position field in the MIB. This field is defined to allow simple-capability terminal devices to obtain the corresponding SIB1, enabling them to sequentially and quickly access the system and achieve uplink synchronization and cell selection. This ensures that simple-capability terminal devices can communicate normally and improves communication efficiency.

[0175] Optionally, in some embodiments of this application, the parameter is used to indicate the control resource set corresponding to the first SIB1; the processing unit 320 is further used to detect the physical downlink control channel PDCCH on the control resource set corresponding to the first SIB1 indicated by the parameter, and the PDCCH is used to schedule the physical downlink shared channel PDSCH carrying the first SIB1.

[0176] Optionally, in some embodiments of this application, the control resource set corresponding to the first SIB1 may be the same as or different from the control resource set corresponding to the second SIB1. The first MIB includes a first parameter, which is used to indicate the control resource set corresponding to the second SIB1. The second SIB1 includes access configuration information of the second device.

[0177] Optionally, in some embodiments of this application, when the control resource set corresponding to the first SIB1 is the same as the control resource set corresponding to the second SIB1, the first SIB1 in the PDSCH is obtained according to the downlink control information (DCI) carried by the PDCCH in the control resource set corresponding to the first SIB1 and the first information, wherein the first information is predefined or configured through higher layer signaling.

[0178] Optionally, in some embodiments of this application, the first information may include one or more of the following: MCS, HARQ process count, NDI, RV field, etc.

[0179] Optionally, in some embodiments of this application, when the control resource set corresponding to the first SIB1 is the same as the control resource set corresponding to the second SIB1, the processing unit is further configured to obtain the first SIB1 in the PDSCH according to the downlink control information (DCI) carried by the first PDCCH. Wherein, the first PDCCH is the PDCCH in the control resource set corresponding to the first SIB1, and the first PDCCH is scrambled using a first radio network temporary identifier (RNTI); the second PDCCH is the PDCCH in the control resource set corresponding to the second SIB1, and the second PDCCH is scrambled using a second RNTI; the first PDCCH and the second PDCCH are different, and the first RNTI and the second RNTI are different.

[0180] Optionally, in some embodiments of this application, the first RNTI can be a first U-RNTI or a first C-RNTI. The second RNTI can be a second U-RNTI or a second C-RNTI. The first U-RNTI and the second U-RNTI are different, and the first C-RNTI and the second C-RNTI are different.

[0181] Optionally, in some embodiments of this application, the parameter is used to indicate receiving the first SIB1 at a first time-frequency location, wherein the first time-frequency location is predefined or configured via higher-layer signaling.

[0182] Optionally, in some embodiments of this application, the parameter is used to indicate the first physical broadcast channel (PBCH) corresponding to the first SIB1. The processing unit 320 is also used to obtain the first SIB1 according to the first PBCH. The time-frequency resource location of the first PBCH is predefined or configured through higher-layer signaling.

[0183] Optionally, in some embodiments of this application, this parameter is used to indicate whether the first SIB1 has been updated.

[0184] Optionally, in some embodiments of this application, when the parameter indicates that the first SIB1 has not been updated,

[0185] The processing unit 320 is further configured to determine, based on the parameter, that the prior SIB1 is the first SIB1, and the prior SIB1 is the SIB1 acquired once by the first device.

[0186] Optionally, in some embodiments of this application, when the parameter indicates that the first SIB1 has been updated,

[0187] The processing unit 320 is further configured to obtain the first SIB1 according to the configuration information of the first SIB1 indicated in the first MIB.

[0188] Optionally, in some embodiments of this application, when the mapping type of the PDSCH carrying the first SIB1 is type A, the time domain symbol position of the first DMRS of the PDSCH carrying the first SIB1 is the fourth time domain symbol within the time unit where the PDSCH is located.

[0189] Optionally, in some embodiments of this application, the parameter (field) for the demodulation reference signal DMRS position of type A PDSCH is the Dmrs-TypeA-Position parameter (field).

[0190] Furthermore, the device 300 may also include a storage unit, and the transceiver unit 310 may be a transceiver, an input / output interface, or an interface circuit. The storage unit is used to store instructions executed by the transceiver unit 310 and the processing unit 320. The transceiver unit 310, the processing unit 320, and the storage unit are coupled to each other. The storage unit stores instructions, the processing unit 320 executes the instructions stored in the storage unit, and the transceiver unit 310 performs specific signal transmission and reception under the drive of the processing unit 320.

[0191] It should be understood that the specific process of each unit in device 300 performing the above-mentioned corresponding steps is described in conjunction with method 200 above. Figures 3 to 5 For the sake of brevity, the description of the first terminal device in the relevant embodiments is omitted here.

[0192] Optionally, the transceiver unit 310 may include a receiving unit (module) and a transmitting unit (module) for performing various embodiments of the aforementioned method 200. Figures 3 to 5 The illustrated embodiment shows the steps of the first terminal device receiving and sending information.

[0193] It should be understood that the transceiver unit 310 can be a transceiver, an input / output interface, or an interface circuit. The storage unit can be a memory. The processing unit 320 can be implemented by a processor. Figure 7 As shown, the communication device 400 may include a processor 410, a memory 420, a transceiver 430, and a bus system 440. The various components of the communication device 400 are coupled together via the bus system 440, which may include, in addition to a data bus, a power bus, a control bus, and a status signal bus, etc. However, for clarity, in... Figure 7 All buses are labeled as Bus System 440. For ease of representation, Figure 7 The image shown is only schematic.

[0194] Figure 6 The communication device 300 shown or Figure 7 The communication device 400 shown can implement various embodiments of the aforementioned method 200 and Figures 3 to 5The steps performed by the first terminal device in the illustrated embodiment are similarly described in the corresponding methods described above. To avoid repetition, they will not be repeated here.

[0195] It should also be understood that Figure 6 The communication device 300 shown or Figure 7 The communication device 400 shown can be a simple terminal device.

[0196] Figure 8 A schematic block diagram of a communication device 500 according to an embodiment of this application is shown. The device 500 may correspond to the network device described in the method 200 above, or it may be a chip or component applied to a network device. Furthermore, each module or unit in the device 500 is used to perform the various actions or processes performed by the network device in the method 200 above.

[0197] like Figure 8 As shown, the device 500 may include a processing unit 510 and a transceiver unit 520. The transceiver unit 520 is used to perform specific signal transmission and reception under the drive of the processing unit 510.

[0198] Processing unit 510 is configured to determine a first main information block (MIB), the first MIB including parameters for indicating the location of the demodulation reference signal (DMRS) of the type A physical downlink shared channel (PDSCH), the parameters for indicating a first system information block (SIB1), the first SIB1 including access configuration information of the first device.

[0199] Transceiver unit 520 is used to transmit the first MIB.

[0200] The communication device provided in this application redefines the content of the field (parameter) indicating the position of the demodulation reference signal DMRS for Type A PDSCH in the MIB. For example, this field can be the DMRS-Type A-Position field in the MIB. This field is defined to allow simple-capability terminal devices to obtain the corresponding SIB1, enabling them to sequentially and quickly access the system and achieve uplink synchronization and cell selection. This ensures that simple-capability terminal devices can communicate normally and improves communication efficiency.

[0201] Optionally, in some embodiments of this application, the parameter is used to indicate the control resource set corresponding to the first SIB1.

[0202] Optionally, in some embodiments of this application, the control resource set corresponding to the first SIB1 may be the same as or different from the control resource set corresponding to the second SIB1. The first MIB includes a first parameter, which is used to indicate the control resource set corresponding to the second SIB1. The second SIB1 includes access configuration information of the second device.

[0203] Optionally, in some embodiments of this application, when the control resource set corresponding to the first SIB1 is the same as the control resource set corresponding to the second SIB1, the first information in the downlink control information (DCI) carried by the PDCCH in the control resource set corresponding to the first SIB1 is predefined or configured through higher-layer signaling.

[0204] Optionally, in some embodiments of this application, the first information may include one or more of the following: MCS, number of Hybrid Automatic Repeat Request (HARQ) processes, NDI, RV, etc.

[0205] Optionally, in some embodiments of this application, when the control resource set corresponding to the first SIB1 is the same as the control resource set corresponding to the second SIB1, the first PDCCH is scrambled using the first RNTI, and the second PDCCH is scrambled using the second RNTI. The first PDCCH is the PDCCH in the control resource set corresponding to the first SIB1, and the second PDCCH is the PDCCH in the control resource set corresponding to the second SIB1. The first PDCCH and the second PDCCH are different, and the first RNTI and the second RNTI are different.

[0206] Optionally, in some embodiments of this application, the first RNTI can be a first U-RNTI or a first C-RNTI. The second RNTI can be a second U-RNTI or a second C-RNTI. The first U-RNTI and the second U-RNTI are different, and the first C-RNTI and the second C-RNTI are different.

[0207] Optionally, in some embodiments of this application, this parameter is used to indicate that the first SIB1 is located at a first time-frequency position. This first time-frequency position is predefined or configured via higher-layer signaling.

[0208] Optionally, in some embodiments of this application, the parameter is used to indicate the first physical broadcast channel (PBCH) corresponding to the first SIB1, and the time-frequency resource location of the first PBCH is predefined or configured through higher-layer signaling.

[0209] Optionally, in some embodiments of this application, this parameter is used to indicate whether the first SIB1 has been updated.

[0210] Optionally, in some embodiments of this application, when the mapping type of the PDSCH carrying the first SIB1 is type A, the time domain symbol position of the first DMRS of the PDSCH carrying the first SIB1 is the fourth time domain symbol within the time unit where the PDSCH is located.

[0211] Optionally, in some embodiments of this application, the parameter (field) for the demodulation reference signal DMRS position of type A PDSCH is the Dmrs-TypeA-Position parameter (field).

[0212] It should be understood that the specific process of each unit in device 500 performing the above-mentioned corresponding steps is described in conjunction with method 200 above. Figures 3 to 5 For the sake of brevity, the description of the network devices in the relevant embodiments is omitted here.

[0213] Optionally, the transceiver unit 520 may include a receiving unit (module) and a sending unit (module) for performing various embodiments of the aforementioned method 200. Figures 2 to 5 The illustrated embodiment shows the steps for the network device to receive and send information.

[0214] Furthermore, the device 500 may also include a storage unit. The transceiver unit 520 may be a transceiver, an input / output interface, or an interface circuit. The storage unit is used to store instructions executed by the transceiver unit 520 and the processing unit 510. The transceiver unit 520, the processing unit 510, and the storage unit are coupled to each other. The storage unit stores instructions, the processing unit 510 executes the instructions stored in the storage unit, and the transceiver unit 520 performs specific signal transmission and reception under the drive of the processing unit 510.

[0215] It should be understood that the transceiver unit 520 can be a transceiver, an input / output interface, or an interface circuit. The storage unit can be a memory. The processing unit 310 can be implemented by a processor. Figure 9 As shown, the communication device 600 may include a processor 610, a memory 620, and a transceiver 630.

[0216] Figure 8 The communication device 500 shown or Figure 9 The communication device 600 shown can implement the embodiments of the aforementioned method 200 and Figures 3 to 5 The steps performed by the network device in the illustrated embodiment are similarly described in the corresponding methods described above. To avoid repetition, they will not be repeated here.

[0217] It should also be understood that Figure 8 The communication device 500 shown or Figure 9 The communication device 600 shown can be a network device.

[0218] It should also be understood that the division of units in the above device is merely a logical functional division. In actual implementation, they can be fully or partially integrated into a single physical entity, or they can be physically separated. Furthermore, all units in the device can be implemented entirely through software calls from processing elements; all units can be implemented entirely in hardware; or some units can be implemented through software calls from processing elements, while others are implemented in hardware. For example, each unit can be a separate processing element, or it can be integrated into a chip within the device. Alternatively, it can be stored as a program in memory, and its function can be called and executed by a processing element within the device. Here, the processing element can also be called a processor, which can be an integrated circuit with signal processing capabilities. In the implementation process, each step of the above method or each of the above units can be implemented through integrated logic circuits in the processor element or through software calls from processing elements.

[0219] In one example, a unit in any of the above devices can be one or more integrated circuits configured to implement the methods described above, such as one or more application-specific integrated circuits (ASICs), or one or more digital signal processors (DSPs), or one or more field-programmable gate arrays (FPGAs), or a combination of at least two of these forms of integrated circuits. As another example, when a unit in the device can be implemented in the form of a processing element scheduler, the processing element can be a general-purpose processor, such as a central processing unit (CPU) or other processor capable of calling programs. Furthermore, these units can be integrated together to implement a system-on-a-chip (SOC).

[0220] Figure 10 This is a schematic diagram of the structure of a terminal device 700 provided in this application. The aforementioned device 300 or 400 can be configured within the terminal device 700. Alternatively, the device 300 or 400 itself can be the terminal device 700. In other words, the terminal device 700 can perform the actions performed by the first terminal device in the aforementioned method 200. Optionally, the terminal device 700 can be a simple terminal device.

[0221] For ease of explanation, Figure 10 Only the main components of the terminal device are shown. For example... Figure 10As shown, the terminal device 700 includes a processor, memory, control circuit, antenna, and input / output devices.

[0222] The processor is primarily used to process communication protocols and data, control the entire terminal device, execute software programs, and process the data within those programs. For example, it supports the terminal device in performing the actions described in the embodiments of the transmission precoding matrix instruction method. The memory is primarily used to store software programs and data, such as the codebook described in the embodiments above. The control circuit is primarily used for converting baseband signals to radio frequency signals and processing radio frequency signals. The control circuit and antenna together can also be called a transceiver, primarily used for transmitting and receiving radio frequency signals in the form of electromagnetic waves. Input / output devices, such as touchscreens, displays, and keyboards, are primarily used to receive user input data and output data to the user.

[0223] When the terminal device is powered on, the processor can read the software program from the storage unit, interpret and execute the software program's instructions, and process the software program's data. When data needs to be transmitted wirelessly, the processor performs baseband processing on the data to be transmitted and outputs the baseband signal to the radio frequency (RF) circuit. The RF circuit then processes the baseband signal and transmits the RF signal outward as electromagnetic waves through the antenna. When data is sent to the terminal device, the RF circuit receives the RF signal through the antenna, converts the RF signal into a baseband signal, and outputs the baseband signal to the processor. The processor converts the baseband signal back into data and processes the data.

[0224] Those skilled in the art will understand that, for ease of explanation, Figure 10 Only one memory and processor are shown. In actual terminal devices, multiple processors and memories may exist. Memory can also be called storage medium or storage device, etc., and this application embodiment does not limit this.

[0225] For example, a processor may include a baseband processor and a central processing unit (CPU). The baseband processor is mainly used to process communication protocols and communication data, while the CPU is mainly used to control the entire terminal device, execute software programs, and process the data of the software programs. Figure 10The processor integrates the functions of a baseband processor and a central processing unit (CPU). Those skilled in the art will understand that the baseband processor and CPU can also be independent processors interconnected via technologies such as buses. It will also be understood that a terminal device can include multiple baseband processors to adapt to different network standards, and multiple CPUs to enhance its processing capabilities. The various components of the terminal device can be connected via various buses. The baseband processor can also be described as a baseband processing circuit or a baseband processing chip. Similarly, the CPU can be described as a central processing circuit or a central processing chip. The function of processing communication protocols and communication data can be built into the processor or stored as software programs in a storage unit, with the processor executing the software programs to implement the baseband processing function.

[0226] For example, in the embodiments of this application, the antenna and control circuit with transceiver functions can be regarded as the transceiver unit 701 of the terminal device 700, and the processor with processing functions can be regarded as the processing unit 702 of the terminal device 700. Figure 10 As shown, the terminal device 700 includes a transceiver unit 701 and a processing unit 202. The transceiver unit can also be referred to as a transceiver, transceiver device, or transceiver apparatus. Optionally, the device in the transceiver unit 701 used to implement the receiving function can be considered as a receiving unit, and the device in the transceiver unit 701 used to implement the transmitting function can be considered as a transmitting unit; that is, the transceiver unit 701 includes a receiving unit and a transmitting unit. For example, the receiving unit can also be referred to as a receiver, receiver circuit, or receiving device, and the transmitting unit can be referred to as a transmitter, transmitter, or transmitting circuit.

[0227] Figure 11 A schematic diagram of the structure of another terminal device 800 provided in this application. Figure 11 In this embodiment, the terminal device includes a processor 810, a data transmission processor 820, and a data reception processor 830. The processing unit 320 in the above embodiment may be... Figure 11 The transceiver unit 310 in the above embodiment can be a processor 810, which performs the corresponding functions. Figure 11 The transmitting data processor 820 and / or receiving data processor 830 are included. Although Figure 11 The diagram shows a channel encoder and a channel decoder, but it is understood that these modules are not limiting to this embodiment and are merely illustrative.

[0228] Figure 12This is a schematic diagram of the structure of a network device 900 provided in an embodiment of this application, which can be used to implement the functions of the network device in the above-described method. The network device 900 includes one or more radio frequency (RF) units, such as a remote radio unit (RRU) 901 and one or more baseband units (BBUs) (also referred to as digital units, DUs) 902. The RRU 901 can be called a transceiver unit, transceiver, transceiver circuit, or transceiver, etc., and may include at least one antenna 9011 and an RF unit 9012. The RRU 901 is mainly used for transmitting and receiving RF signals and converting RF signals to baseband signals, for example, for sending signaling messages as described in the above embodiments to terminal devices. The BBU 902 is mainly used for baseband processing and controlling the base station. The RRU 901 and BBU 902 can be physically arranged together or physically separated, i.e., a distributed base station.

[0229] The BBU 902 serves as the control center of the base station, also known as the processing unit. It primarily performs baseband processing functions such as channel coding, multiplexing, modulation, and spread spectrum. For example, the BBU (processing unit) 902 can control the base station 90 to execute the network device operation procedures described in the above method embodiments.

[0230] In one example, the BBU 902 can be composed of one or more single boards. Multiple boards can collectively support a single access standard wireless access network (such as an LTE system or a 5G system), or they can each support wireless access networks with different access standards. The BBU 902 also includes a memory 9021 and a processor 9022. The memory 9021 is used to store necessary instructions and data. For example, the memory 9021 stores the codebook as described in the above embodiments. The processor 9022 is used to control the base station to perform necessary actions, such as controlling the base station to execute the operation procedures related to the network device in the above method embodiments. The memory 9021 and processor 9022 can serve one or more single boards. That is, each single board can have its own memory and processor, or multiple single boards can share the same memory and processor. Furthermore, each single board can also have necessary circuitry.

[0231] In one possible implementation, with the development of system-on-chip (SoC) technology, all or part of the functions of parts 902 and 901 can be implemented by SoC technology, for example, by a base station function chip. This base station function chip integrates a processor, memory, antenna interface, and other devices. The program for base station-related functions is stored in memory, and the processor executes the program to implement the relevant functions of the base station. Optionally, the base station function chip can also read external memory to implement the relevant functions of the base station.

[0232] It should be understood that Figure 12 The network device structure shown in the example is only one possible configuration and should not be construed as limiting the embodiments of this application. This application does not exclude the possibility of other base station structures in the future.

[0233] It should be understood that in the embodiments of this application, the processor can be a central processing unit (CPU), or it can be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor.

[0234] It should also be understood that the memory in the embodiments of this application can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. The volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of random access memory (RAM) are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate synchronous DRAM (DDR SDRAM), enhanced synchronous DRAM (ESDRAM), synchronous linked DRAM (SLDRAM), and direct rambus RAM (DR RAM).

[0235] The above embodiments can be implemented, in whole or in part, by software, hardware, firmware, or any other combination thereof. When implemented using software, the above embodiments can be implemented, in whole or in part, as a computer program product. This computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer program are loaded or executed on a computer, all or part of the processes or functions according to the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., infrared, wireless, microwave, etc.) 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 includes one or more sets of available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium. A semiconductor medium can be a solid-state drive.

[0236] This application also provides a communication system, which includes the aforementioned simplified terminal device and the aforementioned network device. Optionally, the communication system may also include a normal terminal device.

[0237] This application also provides a computer-readable medium for storing computer program code, the computer program including instructions for performing the system information transmission method of the present application embodiment in method 200 described above. The readable medium may be a read-only memory (ROM) or a random access memory (RAM), and this application embodiment does not limit this.

[0238] This application also provides a computer program product including instructions that, when executed, cause a simple-capable terminal device and a network device to respectively perform operations corresponding to the methods described above.

[0239] This application also provides a system-on-a-chip (SoC) comprising a processing unit and a communication unit. The processing unit may be, for example, a processor, and the communication unit may be, for example, an input / output interface, pins, or circuitry. The processing unit can execute computer instructions to cause the chip within the communication device to perform any of the system information transmission methods provided in this application.

[0240] Optionally, any of the communication devices provided in the above embodiments of this application may include the system chip.

[0241] Optionally, the computer instructions are stored in a storage unit.

[0242] Optionally, the storage unit can be an internal storage unit within the chip, such as a register or cache. Alternatively, it can be an external storage unit located within the terminal, such as ROM or other types of static storage devices capable of storing static information and instructions, like RAM. The processor mentioned above can be a CPU, microprocessor, ASIC, or one or more integrated circuits executing a program for controlling the aforementioned main system information transmission method. The processing unit and the storage unit can be decoupled and located on different physical devices, connected via wired or wireless means to implement their respective functions, thus supporting the system chip in implementing the various functions described in the above embodiments. Alternatively, the processing unit and the memory can also be coupled to the same device.

[0243] It is understood that the memory in the embodiments of this application can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. The volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of random access memory (RAM) are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate synchronous DRAM (DDR SDRAM), enhanced synchronous DRAM (ESDRAM), synchronous linked DRAM (SLDRAM), and direct rambus RAM (DR RAM).

[0244] In this paper, the terms "system" and "network" are often used interchangeably. The term "and / or" is used to describe 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. Additionally, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0245] The terms "uplink" and "downlink" appearing in this application are used to describe the direction of data / information transmission in specific scenarios. For example, the "uplink" direction generally refers to the direction of data / information transmission from the terminal to the network side, or the direction of transmission from the distributed unit to the centralized unit. The "downlink" direction generally refers to the direction of data / information transmission from the network side to the terminal, or the direction of transmission from the centralized unit to the distributed unit. It can be understood that "uplink" and "downlink" are only used to describe the direction of data / information transmission, and the specific starting and ending devices of the data / information transmission are not limited.

[0246] In this application, various objects such as messages / information / devices / network elements / systems / devices / actions / operations / processes / concepts may be named. It is understood that these specific names do not constitute a limitation on the relevant objects. The names may be changed depending on the scenario, context, or usage habits. The understanding of the technical meaning of the technical terms in this application should be mainly determined from their functions and technical effects embodied / performed in the technical solution.

[0247] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0248] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0249] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0250] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0251] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0252] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes: USB flash drive, portable hard drive, read-only memory (ROM), and random access memory.

[0253] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for transmitting system information, characterized in that, include: Receive the first master information block (MIB); Obtain the parameters in the first MIB used to indicate the location of the demodulation reference signal DMRS of the type A physical downlink shared channel PDSCH. The parameters are used to obtain the first system information block SIB1, which includes the access configuration information of the first device. Based on the parameters, obtain the first SIB1; The parameter is used to indicate the control resource set corresponding to the first SIB1; The step of obtaining the first SIB1 includes: The physical downlink control channel (PDCCH) is detected on the control resource set corresponding to the first SIB1 indicated by the parameter. The PDCCH is used to schedule the physical downlink shared channel (PDSCH) carrying the first SIB1. The first MIB includes a first parameter, which is used to indicate the control resource set corresponding to the second SIB1. The second SIB1 includes access configuration information of the second device, and the bandwidth of the second device is greater than the bandwidth of the first device. When the control resource set corresponding to the first SIB1 is the same as the control resource set corresponding to the second SIB1, and the first device and the second device detect the downlink control information (DCI) carried by the same PDCCH in the control resource set, the first SIB1 is obtained based on the DCI and the first information, the second SIB1 is obtained based on the DCI, and the first information includes part of the information of the DCI.

2. The method according to claim 1, characterized in that, The first piece of information is predefined or configured via higher-level signaling.

3. The method according to claim 1, characterized in that, When the control resource set corresponding to the first SIB1 is the same as the control resource set corresponding to the second SIB1, the first SIB1 in the PDSCH is obtained according to the downlink control information (DCI) carried by the first PDCCH. Wherein, the first PDCCH is the PDCCH of the control resource set corresponding to the first SIB1, and the first PDCCH is scrambled using the first radio network temporary identifier RNTI; the second PDCCH is the PDCCH of the control resource set corresponding to the second SIB1, and the second PDCCH is scrambled using the second RNTI; the first PDCCH is different from the second PDCCH, and the first RNTI is different from the second RNTI.

4. The method according to claim 1, characterized in that, The parameters are used to indicate receiving the first SIB1 at a first time-frequency location, wherein the first time-frequency location is predefined or configured via higher-layer signaling.

5. The method according to claim 1, characterized in that, The parameter is used to indicate the first physical broadcast channel PBCH corresponding to the first SIB1. Obtaining the first SIB1 based on the parameters includes: The first SIB1 is obtained based on the first PBCH, and the time-frequency resource location of the first PBCH is predefined or configured through higher-layer signaling.

6. The method according to claim 1, characterized in that, The parameter is used to indicate whether the first SIB1 has been updated.

7. The method according to claim 6, characterized in that, When the parameter indicates that the first SIB1 is not being updated, obtaining the first SIB1 according to the parameter includes: The prior SIB1 is determined to be the first SIB1, wherein the prior SIB1 is the SIB1 acquired once by the first device.

8. The method according to claim 6, characterized in that, When the parameter indicates that the first SIB1 has been updated, obtaining the first SIB1 according to the parameter includes: The first SIB1 is obtained according to the configuration information of the first SIB1 indicated in the first MIB.

9. The method according to any one of claims 1 to 8, characterized in that, When the mapping type of the PDSCH carrying the first SIB1 is type A, the time domain symbol of the first DMRS of the PDSCH carrying the first SIB1 is the fourth time domain symbol in the time unit where the PDSCH is located.

10. A method for transmitting system information, characterized in that, include: A first master information block (MIB) is determined. The first MIB includes parameters for indicating the location of the demodulation reference signal (DMRS) of the type A physical downlink shared channel (PDSCH). The parameters are used to indicate a first system information block (SIB1). The first SIB1 includes access configuration information of the first device. The parameter is used to indicate the control resource set corresponding to the first SIB1; the control resource set is used to detect the physical downlink control channel PDCCH, and the PDCCH is used to schedule the physical downlink shared channel PDSCH carrying the first SIB1. Send the first MIB; The first MIB includes a first parameter, which is used to indicate the control resource set corresponding to the second SIB1. The second SIB1 includes access configuration information of the second device, and the bandwidth of the second device is greater than the bandwidth of the first device. When the control resource set corresponding to the first SIB1 is the same as the control resource set corresponding to the second SIB1, and the first device and the second device detect the downlink control information (DCI) carried by the same PDCCH in the control resource set, the first SIB1 is obtained based on the DCI and the first information, the second SIB1 is obtained based on the DCI, and the first information includes part of the information of the DCI.

11. The method according to claim 10, characterized in that, The first information in the downlink control information (DCI) carried by the PDCCH in the control resource set corresponding to the first SIB1 is predefined or configured through higher-layer signaling.

12. The method according to claim 10, characterized in that, When the control resource set corresponding to the first SIB1 is the same as the control resource set corresponding to the second SIB1, the first PDCCH is scrambled using the first RNTI, and the second PDCCH is scrambled using the second RNTI. The first PDCCH is the PDCCH in the control resource set corresponding to the first SIB1, and the second PDCCH is the PDCCH in the control resource set corresponding to the second SIB1. The first PDCCH and the second PDCCH are different, and the first RNTI and the second RNTI are different.

13. The method according to claim 10, characterized in that, The parameter is used to indicate that the first SIB1 is located at a first time-frequency position, wherein the first time-frequency position is predefined or configured via higher-layer signaling.

14. The method according to claim 10, characterized in that, The parameter is used to indicate the first physical broadcast channel (PBCH) corresponding to the first SIB1, and the time-frequency resource location of the first PBCH is predefined or configured through higher-layer signaling.

15. The method according to claim 10, characterized in that, The parameter is used to indicate whether the first SIB1 has been updated.

16. The method according to any one of claims 10 to 15, characterized in that, When the mapping type of the PDSCH carrying the first SIB1 is type A, the time domain symbol of the first DMRS of the PDSCH carrying the first SIB1 is the fourth time domain symbol in the time unit where the PDSCH is located.

17. A communication device, characterized in that, include: The transceiver unit is used to receive the first master information block (MIB). The processing unit is configured to obtain parameters in the first MIB used to indicate the location of the demodulation reference signal DMRS of the type A physical downlink shared channel PDSCH, the parameters being used to obtain the first system information block SIB1, the first SIB1 including the access configuration information of the first device; The processing unit is further configured to obtain the first SIB1 based on the parameters; The parameter is used to indicate the control resource set corresponding to the first SIB1; The step of obtaining the first SIB1 includes: The processing unit is further configured to detect the physical downlink control channel PDCCH on the control resource set corresponding to the first SIB1 indicated by the parameter, wherein the PDCCH is used to schedule the physical downlink shared channel PDSCH carrying the first SIB1. The first MIB includes a first parameter, which is used to indicate the control resource set corresponding to the second SIB1. The second SIB1 includes access configuration information of the second device, and the bandwidth of the second device is greater than the bandwidth of the first device. When the control resource set corresponding to the first SIB1 is the same as the control resource set corresponding to the second SIB1, and the first device and the second device detect the downlink control information (DCI) carried by the same PDCCH in the control resource set, the first SIB1 is obtained based on the DCI and the first information, the second SIB1 is obtained based on the DCI, and the first information includes part of the information of the DCI.

18. The apparatus according to claim 17, characterized in that, The first piece of information is predefined or configured via higher-level signaling.

19. The apparatus according to claim 17, characterized in that, When the control resource set corresponding to the first SIB1 is the same as the control resource set corresponding to the second SIB1, the processing unit is further configured to obtain the first SIB1 in the PDSCH according to the downlink control information (DCI) carried by the first PDCCH. Wherein, the first PDCCH is the PDCCH of the control resource set corresponding to the first SIB1, and the first PDCCH is scrambled using the first radio network temporary identifier RNTI; the second PDCCH is the PDCCH of the control resource set corresponding to the second SIB1, and the second PDCCH is scrambled using the second RNTI; the first PDCCH is different from the second PDCCH, and the first RNTI is different from the second RNTI.

20. The apparatus according to claim 17, characterized in that, The parameters are used to indicate receiving the first SIB1 at a first time-frequency location, wherein the first time-frequency location is predefined or configured via higher-layer signaling.

21. The apparatus according to claim 17, characterized in that, The parameter is used to indicate the first physical broadcast channel PBCH corresponding to the first SIB1. The processing unit is further configured to obtain the first SIB1 based on the first PBCH, wherein the time-frequency resource location of the first PBCH is predefined or configured through higher-layer signaling.

22. The apparatus according to claim 17, characterized in that, The parameter is used to indicate whether the first SIB1 has been updated.

23. The apparatus according to claim 22, characterized in that, When the parameter indicates that the first SIB1 has not been updated. The processing unit is further configured to determine, based on the parameters, that the prior SIB1 is the first SIB1, wherein the prior SIB1 is the SIB1 acquired once on the first device.

24. The apparatus according to claim 22, characterized in that, When the parameter indicates that the first SIB1 has been updated. The processing unit is further configured to obtain the first SIB1 according to the configuration information of the first SIB1 indicated in the first MIB.

25. The apparatus according to any one of claims 17 to 24, characterized in that, When the mapping type of the PDSCH carrying the first SIB1 is type A, the time domain symbol of the first DMRS of the PDSCH carrying the first SIB1 is the fourth time domain symbol in the time unit where the PDSCH is located.

26. A communication device, characterized in that, include: The processing unit is configured to determine a first master information block (MIB), the first MIB including parameters for indicating the location of the demodulation reference signal (DMRS) of the type A physical downlink shared channel (PDSCH), the parameters being used to indicate a first system information block (SIB1), the first SIB1 including access configuration information of a first device; The parameter is used to indicate the control resource set corresponding to the first SIB1; the control resource set is used to detect the physical downlink control channel PDCCH, and the PDCCH is used to schedule the physical downlink shared channel PDSCH carrying the first SIB1. Transceiver unit, used to transmit the first MIB; The first MIB includes a first parameter, which is used to indicate the control resource set corresponding to the second SIB1. The second SIB1 includes access configuration information of the second device, and the bandwidth of the second device is greater than the bandwidth of the first device. When the control resource set corresponding to the first SIB1 is the same as the control resource set corresponding to the second SIB1, and the first device and the second device detect the downlink control information (DCI) carried by the same PDCCH in the control resource set, the first SIB1 is obtained based on the DCI and the first information, the second SIB1 is obtained based on the DCI, and the first information includes part of the information of the DCI.

27. The apparatus according to claim 26, characterized in that, The first information in the downlink control information (DCI) carried by the PDCCH in the control resource set corresponding to the first SIB1 is predefined or configured through higher-layer signaling.

28. The apparatus according to claim 26, characterized in that, When the control resource set corresponding to the first SIB1 is the same as the control resource set corresponding to the second SIB1, the first PDCCH is scrambled using the first RNTI, and the second PDCCH is scrambled using the second RNTI. The first PDCCH is the PDCCH in the control resource set corresponding to the first SIB1, and the second PDCCH is the PDCCH in the control resource set corresponding to the second SIB1. The first PDCCH and the second PDCCH are different, and the first RNTI and the second RNTI are different.

29. The apparatus according to claim 26, characterized in that, The parameter is used to indicate that the first SIB1 is located at a first time-frequency position, wherein the first time-frequency position is predefined or configured via higher-layer signaling.

30. The apparatus according to claim 26, characterized in that, The parameter is used to indicate the first physical broadcast channel (PBCH) corresponding to the first SIB1, and the time-frequency resource location of the first PBCH is predefined or configured through higher-layer signaling.

31. The apparatus according to claim 26, characterized in that, The parameter is used to indicate whether the first SIB1 has been updated.

32. The apparatus according to any one of claims 26 to 31, characterized in that, When the mapping type of the PDSCH carrying the first SIB1 is type A, the time domain symbol of the first DMRS of the PDSCH carrying the first SIB1 is the fourth time domain symbol in the time unit where the PDSCH is located.

33. A communication device, characterized in that, The device includes at least one processor, the at least one processor being coupled to at least one memory: The at least one processor is configured to execute a computer program or instructions stored in the at least one memory to cause the apparatus to perform the method as described in any one of claims 1 to 9, or the method as described in any one of claims 10 to 16.

34. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program or instructions that, when read and executed by a computer, cause the computer to perform the method as described in any one of claims 1 to 9, or the method as described in any one of claims 10 to 16.

35. A chip, characterized in that, include: A processor for retrieving and running a computer program from memory, causing a communication device on which the chip is mounted to perform the method as described in any one of claims 1 to 9, or the method as described in any one of claims 10 to 16.

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