Physical Broadcast Channel (PBCH) transmission methods, apparatus, equipment, and storage media

Abstract

This disclosure provides a method, apparatus, device, and storage medium for transmitting a Physical Broadcast Channel (PBCH) block, which can be applied to a communication system. The method includes: a network device transmitting the PBCH payload of each synchronization signal and a PBCH block SSB to a terminal device based on a system spectrum less than a first bandwidth. By implementing this method, the transmission performance of the PBCH can be effectively improved even with limited frequency resources.

Description

Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to a method, apparatus, device and storage medium for transmitting a Physical Broadcast Channel (PBCH). Background Technology

[0002] The physical broadcast channel (PBCH) is the first channel that the user equipment (UE) needs to decode after detecting the primary and secondary synchronization signals. The PBCH and demodulation reference signal (DMRS) are contained within the synchronization and physical broadcast channel block (SSB). The PBCH contains a portion of the minimum system information required for the UE to access the new radio (NR) wireless network system, including the master information block (MIB) and other information related to the SSB transmission time.

[0003] In related technologies, in NR systems, PBCH typically occupies 20 resource blocks (RBs) for transmission. However, private network systems have limited frequency resources, so it is necessary to consider how to improve the transmission performance of PBCH under the condition of limited frequency resources. Summary of the Invention

[0004] This disclosure provides a method, apparatus, device, chip system, storage medium, computer program, and computer program product for Physical Broadcast Channel (PBCH) transmission, which can be applied in the field of communication technology and can effectively improve the transmission performance of PBCH under the condition of limited frequency resources.

[0005] In a first aspect, embodiments of this disclosure provide a Physical Broadcast Channel (PBCH) transmission method, executed by a network device, the method comprising: transmitting the PBCH payload of each synchronization signal and a Physical Broadcast Channel Block (SSB) to a terminal device based on a system spectrum less than a first bandwidth.

[0006] Secondly, embodiments of this disclosure provide a Physical Broadcast Channel (PBCH) transmission method, executed by a terminal device, the method comprising: receiving, based on a system spectrum less than a first bandwidth, each synchronization signal transmitted by a network device and the Physical Broadcast Channel (PBCH) payload of a Physical Broadcast Channel (PBCH) block SSB.

[0007] Thirdly, embodiments of this disclosure provide a communication device that implements some or all of the functions of the network device in the method of the first aspect described above. For example, the communication device may have the functions of some or all of the embodiments in this disclosure, or it may have the functions of implementing any one embodiment of this disclosure individually. The functions can be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

[0008] Optionally, in one embodiment of this disclosure, the communication device may include a transceiver module and a processing module, wherein the processing module is configured to support the communication device in performing the corresponding functions in the above-described methods. The transceiver module is used to support communication between the communication device and other devices. The communication device may also include a storage module, which is coupled to the transceiver module and the processing module, and stores the necessary computer programs and data of the communication device.

[0009] As an example, the processing module can be a processor, the transceiver module can be a transceiver or a communication interface, and the storage module can be a memory.

[0010] Fourthly, embodiments of this disclosure provide another communication device that has some or all of the functions of the terminal device in the method example of the second aspect described above. For example, the communication device may have the functions of some or all of the embodiments in this disclosure, or it may have the functions of implementing any one embodiment of this disclosure individually. The functions can be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

[0011] Optionally, in one embodiment of this disclosure, the communication device may include a transceiver module and a processing module, the processing module being configured to support the communication device in performing the corresponding functions in the methods described above. The transceiver module is used to support communication between the communication device and other devices. The communication device may also include a storage module, which is coupled to the transceiver module and the processing module, and stores the computer programs and data necessary for the communication device.

[0012] Fifthly, embodiments of this disclosure provide a communication device including a processor that, when the processor invokes a computer program in memory, executes the Physical Broadcast Channel (PBCH) transmission method described in the first aspect.

[0013] In a sixth aspect, embodiments of this disclosure provide a communication device including a processor that, when the processor invokes a computer program in memory, executes the Physical Broadcast Channel (PBCH) transmission method described in the second aspect.

[0014] In a seventh aspect, embodiments of this disclosure provide a communication device including a processor and a memory, the memory storing a computer program; the processor executes the computer program stored in the memory to cause the communication device to perform the Physical Broadcast Channel (PBCH) transmission method described in the first aspect.

[0015] Eighthly, embodiments of this disclosure provide a communication device including a processor and a memory storing a computer program; the processor executes the computer program stored in the memory to cause the communication device to perform the Physical Broadcast Channel (PBCH) transmission method described in the second aspect.

[0016] Ninthly, embodiments of this disclosure provide a communication device including a processor and an interface circuit. The interface circuit is used to receive code instructions and transmit them to the processor. The processor is used to execute the code instructions to cause the device to perform the Physical Broadcast Channel (PBCH) transmission method described in the first aspect.

[0017] In a tenth aspect, embodiments of this disclosure provide a communication device including a processor and an interface circuit. The interface circuit is configured to receive code instructions and transmit them to the processor, which is configured to execute the code instructions to cause the device to perform the Physical Broadcast Channel (PBCH) transmission method described in the second aspect above.

[0018] Eleventhly, embodiments of this disclosure provide a communication system, which includes a communication device of the third aspect and a communication device of the fourth aspect, or a communication device of the fifth aspect and a communication device of the sixth aspect, or a communication device of the seventh aspect and a communication device of the eighth aspect, or a communication device of the ninth aspect and a communication device of the tenth aspect.

[0019] In a twelfth aspect, embodiments of this disclosure provide a computer-readable storage medium for storing instructions for use by the network device described above, which, when executed, cause the network device to perform the physical broadcast channel PBCH transmission method of the first aspect described above.

[0020] In a thirteenth aspect, embodiments of this disclosure provide a computer-readable storage medium for storing instructions for use by the aforementioned terminal device, which, when executed, cause the terminal device to perform the physical broadcast channel (PBCH) transmission method of the second aspect described above.

[0021] In a fourteenth aspect, this disclosure also provides a computer program product including a computer program that, when run on a computer, causes the computer to perform the physical broadcast channel PBCH transmission method of the first aspect described above.

[0022] In a fifteenth aspect, this disclosure also provides a computer program product including a computer program that, when run on a computer, causes the computer to perform the physical broadcast channel PBCH transmission method described in the second aspect above.

[0023] In a sixteenth aspect, this disclosure provides a chip system including at least one processor and an interface for supporting network devices in implementing the functions involved in the first aspect, such as determining or processing at least one of the data and information involved in the above methods.

[0024] In one possible design, the chip system also includes a memory for storing the computer programs and data necessary for the network device. This chip system can be composed of chips or may include chips and other discrete components.

[0025] In a seventeenth aspect, this disclosure provides a chip system including at least one processor and an interface for supporting a terminal device in implementing the functions involved in the second aspect, such as determining or processing at least one of the data and information involved in the above methods.

[0026] In one possible design, the chip system also includes a memory for storing the computer programs and data necessary for the terminal device. This chip system can consist of chips or include chips and other discrete components.

[0027] In an eighteenth aspect, this disclosure provides a computer program that, when run on a computer, causes the computer to perform the physical broadcast channel PBCH transmission method described in the first aspect.

[0028] In a nineteenth aspect, this disclosure provides a computer program that, when run on a computer, causes the computer to perform the physical broadcast channel PBCH transmission method described in the second aspect above.

[0029] In summary, the Physical Broadcast Channel (PBCH) transmission method, apparatus, device, chip system, storage medium, computer program, and computer program product provided in the embodiments of this disclosure can achieve the following technical effects:

[0030] By having network devices transmit each synchronization signal and the physical broadcast channel (PBCH) payload of the physical broadcast channel (SPSB) block SSB to terminal devices based on system spectrum less than the first bandwidth, the transmission performance of PBCH can be effectively improved under the condition of limited frequency resources. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments or background art of this disclosure, the accompanying drawings used in the embodiments or background art of this disclosure will be described below.

[0032] Figure 1 This is a schematic diagram of the architecture of a communication system provided in an embodiment of the present disclosure;

[0033] Figure 2 This is a flowchart illustrating a Physical Broadcast Channel (PBCH) transmission method provided in an embodiment of this disclosure;

[0034] Figure 3 This is a flowchart illustrating another physical broadcast channel (PBCH) transmission method provided in an embodiment of this disclosure;

[0035] Figure 4 This is a flowchart illustrating another physical broadcast channel (PBCH) transmission method provided in an embodiment of this disclosure;

[0036] Figure 5 This is a flowchart illustrating another physical broadcast channel (PBCH) transmission method provided in this disclosure embodiment;

[0037] Figure 6 This is a flowchart illustrating another physical broadcast channel (PBCH) transmission method provided in this disclosure embodiment;

[0038] Figure 7 This is a flowchart illustrating another physical broadcast channel (PBCH) transmission method provided in this disclosure embodiment;

[0039] Figure 8 This is a flowchart illustrating another physical broadcast channel (PBCH) transmission method provided in this disclosure embodiment;

[0040] Figure 9 This is a flowchart illustrating another physical broadcast channel (PBCH) transmission method provided in this disclosure embodiment;

[0041] Figure 10 This is a schematic diagram of the structure of a communication device provided in an embodiment of the present disclosure;

[0042] Figure 11 This is a schematic diagram of another communication device provided in an embodiment of this disclosure;

[0043] Figure 12 This is a schematic diagram of the chip structure according to an embodiment of the present disclosure. Detailed Implementation

[0044] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with those of this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the embodiments of this disclosure as detailed in the appended claims.

[0045] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the present disclosure. The singular forms “a” and “the” as used in this disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0046] It should be understood that although the terms first, second, third, etc., may be used to describe various information in embodiments of this disclosure, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, first information may also be referred to as second information without departing from the scope of embodiments of this disclosure, and similarly, second information may also be referred to as first information. Depending on the context, the words “if” and “suppose” as used herein may be interpreted as “when”, “when”, or “in response to a determination”.

[0047] To facilitate understanding, the terminology used in this disclosure will be introduced first.

[0048] 1. Physical broadcast channel (PBCH).

[0049] PBCH is the first channel that the UE needs to decode after completing the detection of the primary synchronization signal and the secondary synchronization signal.

[0050] 2. Control resource set (CORESET).

[0051] CORESET is a time-frequency region for transmitting the physical downlink control channel (PDCCH) (downlink control information, DCI, which can be carried by the PDCCH).

[0052] 3. Type0-PDDCH CSS is a type of common search space (CSS).

[0053] 4. CORESET#0 refers to the CORESET control resource set of Type0-PDDCH CSS in the protocol specification.

[0054] To better understand the Physical Broadcast Channel (PBCH) transmission method disclosed in this disclosure, the communication system to which this disclosure applies will be described below.

[0055] Please see Figure 1 , Figure 1 This is a schematic diagram of the architecture of a communication system provided in an embodiment of the present disclosure. The communication system may include, but is not limited to, a network device and a terminal device. Figure 1 The number and form of devices shown are for illustrative purposes only and do not constitute a limitation on the embodiments of this disclosure. In actual applications, two or more network devices and two or more terminal devices may be included. Figure 1 The communication system shown is exemplified by a network device 101 and a terminal device 102.

[0056] It should be noted that the technical solutions of this disclosure can be applied to various communication systems. For example, Long Term Evolution (LTE) systems, 5th Generation (5G) mobile communication systems, 5G New Radio (NR) systems, or other future new mobile communication systems.

[0057] The network device 101 in this disclosure is a network-side entity used for transmitting or receiving signals. For example, the network device 101 can be an evolved NodeB (eNB), a transmission reception point (TRP), a next-generation NodeB (gNB) in an NR system, a private network system, a base station in other future mobile communication systems, or an access node in a wireless fidelity (WiFi) system. This disclosure does not limit the specific technology or device form used in the network device.

[0058] The network device provided in this embodiment can be composed of a central unit (CU) and a distributed unit (DU). The CU can also be called a control unit. By adopting the CU-DU structure, the protocol layer of the network device, such as a base station, can be separated. Some of the protocol layer functions are centrally controlled by the CU, while the remaining part or all of the protocol layer functions are distributed in the DU, which is centrally controlled by the CU.

[0059] The terminal device 102 in this embodiment is a user-side entity used to receive or transmit signals, such as a mobile phone. The terminal device can also be referred to as a terminal, user equipment (UE), mobile station (MS), mobile terminal (MT), etc. Terminal devices can be communication-enabled vehicles, smart cars, mobile phones, wearable devices, tablets, computers with wireless transceiver capabilities, virtual reality (VR) terminal devices, augmented reality (AR) terminal devices, wireless terminal devices in industrial control, wireless terminal devices in self-driving, wireless terminal devices in remote medical surgery, wireless terminal devices in smart grids, wireless terminal devices in transportation safety, wireless terminal devices in smart cities, wireless terminal devices in smart homes, and so on.

[0060] The embodiments disclosed herein do not limit the specific technology or device form used in the terminal device.

[0061] It is understood that the communication system described in the embodiments of this disclosure is for the purpose of more clearly illustrating the technical solutions of the embodiments of this disclosure, and does not constitute a limitation on the technical solutions provided in the embodiments of this disclosure. As those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this disclosure are also applicable to similar technical problems.

[0062] It should be noted that the Physical Broadcast Channel (PBCH) transmission method provided in any embodiment of this disclosure can be executed alone, or in combination with possible implementation methods in other embodiments, or in combination with any technical solution in related technologies.

[0063] The physical broadcast channel (PBCH) transmission method and apparatus provided in this disclosure will now be described in detail with reference to the accompanying drawings. Figure 2 This is a flowchart illustrating a Physical Broadcast Channel (PBCH) transmission method provided in an embodiment of this disclosure. This method is executed by a network device. The PBCH transmission method in this embodiment can be applied to network devices, and there are no limitations on its application.

[0064] like Figure 2As shown, the method may include, but is not limited to, the following steps:

[0065] S201: Based on the system spectrum less than the first bandwidth, transmit the physical broadcast channel PBCH payload of each synchronization signal and physical broadcast channel block SSB to the terminal device.

[0066] The first bandwidth can refer to the bandwidth of a system with limited frequency resources.

[0067] In some embodiments, the first bandwidth may be, for example, the bandwidth capable of providing communication services for a private network system, such as a system providing communication services for dedicated services like power systems, railway systems, public protection, and disaster relief. The first bandwidth may specifically be, for example, 5 megahertz (MHz), but of course, it can also be any other possible bandwidth value, without limitation.

[0068] It should be noted that some versions of the communication protocol (e.g., Release 18) may support NR technology on certain dedicated spectrum (n8, n26, n28, n100), and these dedicated spectrum (n8, n26, n28, n100) typically provide communication services for the aforementioned private network systems. The aforementioned dedicated spectrum only supports a 15 kilohertz (kHz) subcarrier spacing, supporting system bandwidths of 5 MHz and 3 MHz. According to the NR and Long Term Evolution (LTE) specifications for radio frequency channel (RF Channel) bandwidth, there are 25 available RBs for 5 MHz, and 15 available RBs for 3 MHz, according to LTE specifications for RF Channel bandwidth. In NR systems, the PBCH typically occupies 20 RBs for transmission, while private network systems (i.e., 3 MHz (15 RBs) and 2.8 MHz to 3.6 MHz) have limited frequency resources. Therefore, it is necessary to consider how to improve the transmission performance of the PBCH under limited frequency resources.

[0069] In this embodiment of the disclosure, the physical broadcast channel (PBCH) payload of each synchronization signal and physical broadcast channel block SSB can be transmitted to the terminal device based on a system spectrum less than the first bandwidth. This effectively improves the transmission performance of PBCH under the condition of limited frequency resources.

[0070] In other words, in this embodiment of the present disclosure, the network device transmits each synchronization signal and the physical broadcast channel PBCH payload of the physical broadcast channel block SSB to the terminal device, which can be based on a system spectrum less than the first bandwidth. For example, it can transmit the PBCH payload of each SSB in the SSB burst set using a system spectrum of less than 5MHz.

[0071] In this embodiment, by transmitting the physical broadcast channel (PBCH) payload of each synchronization signal and physical broadcast channel block SSB to the terminal device based on a system spectrum less than the first bandwidth, the transmission performance of PBCH can be effectively improved under the condition of limited frequency resources.

[0072] In some embodiments of this disclosure, the first bandwidth is 5 MHz, thereby enabling the transmission of the PBCH payload of each SSB to the terminal device based on a system spectrum of less than 5 MHz.

[0073] In some embodiments of this disclosure, the bandwidth of the system spectrum may also be at least one of 3MHz, 2.8MHz, 3.6MHz, or a bandwidth value between 2.8MHz and 3.6MHz, and there is no limitation thereto.

[0074] Therefore, in this embodiment of the disclosure, it is possible to transmit the PBCH payload of each SSB to the terminal device based on the personalized system spectrum, ensuring that good PBCH transmission performance can be obtained under different frequency resource conditions.

[0075] In some embodiments of this disclosure, the PBCH payload may not carry the common subcarrier spacing (subCarrierSpacingCommon), spare, message extension (messageClassExtension), or parameters. parameter In addition to one or more of the SSB index information, it is possible to effectively maintain a low code rate under limited frequency resources, thereby greatly improving the transmission performance of PBCH.

[0076] In other words, this embodiment supports pruning the PBCH payload for each SSB. The pruned PBCH payload size does not carry the common subcarrier spacing (subCarrierSpacingCommon), spare, message class extension, or parameters. parameter And one or more items from the SSB index information.

[0077] For example, considering that dedicated spectrum typically only supports 15kHz sub-carrier spacing (SCS), the subCarrierSpacingCommon field in the MIB can be removed. The subCarrierSpacingCommon field is used to indicate the subcarrier spacing used for initial access messages and system messages (such as Msg2). It is also worth considering removing the spare field and the message extension spare messageClassExtension field (1 bit) to minimize the PBCH payload.

[0078] For example, the bits provided by the physical layer in the PBCH payload can be trimmed to further reduce the PBCH payload.

[0079] For example, the two least reserved bits provided by the physical layer in the PBCH payload can also be removed. Since some dedicated spectra (n8, n26, n28, n100) are all less than 3 GHz, there are at most four SSB indices given their SSB time-domain location distribution. Therefore, the SSB index information is carried in the demodulation reference signal sequence (DMRS sequence). The PBCH payload does not contain SSB index information. Therefore, the reserved bit parameters provided by the physical layer can be removed. and / or parameters delete.

[0080] In some embodiments of this disclosure, the PBCH payload may include an SSB subcarrier offset indicator, wherein the SSB subcarrier offset indicator is configured via ssb-SubcarrierOffset, and the configuration parameters of the SSB subcarrier offset indicator do not include parameters. Furthermore, the valid subcarrier offset value range for the SSB subcarrier offset indicator is 0 <= k. ssb <=11, the carrier frequency belongs to the FR1 frequency range, k ssb This indicates an effective subcarrier offset, thereby reducing the number of bits occupied by the SSB subcarrier offset indicator to enable flexible reduction of the PBCH payload.

[0081] In other words, in this embodiment of the disclosure, considering that the dedicated spectrum typically only supports a 15kHz SCS, the k-band can be removed. ssbThe highest bit occupies 1 bit, meaning that for dedicated spectrums of FR1 less than 5MHz, 4 bits are used to indicate k. ssb ,k ssb The effective subcarrier offset range is 0 <= k ssb <=11.

[0082] In some embodiments of this disclosure, the PBCH payload also includes the parameter pdcch-ConfigSIB1; wherein the parameter pdcch-ConfigSIB1 does not include the four highest bits MSB controlResourceSetZero, and the CORESET#0 associated with the SSB uses a fixed time-frequency domain bandwidth, thereby enabling flexible reduction of the PBCH payload.

[0083] The parameter pdcch-ConfigSIB1 can be used to configure the control resource set and listening timing of the Type0-PDDCH common search space. CORESET#0 is the abbreviation for the control resource set (CORESET) of Type0-PDDCH CSS in the protocol specification. Type0-PDDCH CSS is a type of common search space (CSS).

[0084] In some embodiments, the time-frequency resource information of CORESET0 can be determined by looking up the controlResourceSetZero field of the four most significant bits (MSB) in Pdcch-ConfigSIB1.

[0085] In some embodiments, the SSB may carry configuration information for the associated CORESET#0 and the listening timing for Type0-PDDCHCSS.

[0086] In this embodiment of the disclosure, for the configuration of CORESET#0, one possible implementation is to use a fixed CORESET#0 time-frequency domain bandwidth. For example, CORESET#0 is fixed to use the configuration of {3 OFDM symbols, full bandwidth}. Therefore, it is possible to consider removing the high four bits of PDCCH-ConfigSIB1, that is, to make the parameter pdcch-ConfigSIB1 not carry the 4 highest bits MSB controlResourceSetZero.

[0087] In some embodiments of this disclosure, the PBCH payload may further include the parameter controlResourceSetZero, which includes at least one of the following: N least significant bits (LSBs), wherein the N LSBs are used to indicate the configuration parameters of the first n rows in the CORESET#0 configuration table, N is less than 4, n is less than or equal to 8, and N and n are both positive integers; M bits, wherein the M bits are used to indicate the number of symbols occupied by CORESET#0, M is less than 4, and M is a positive integer, effectively reducing the bits occupied by the parameter controlResourceSetZero in the PBCH payload to achieve flexible reduction of the PBCH payload.

[0088] In some embodiments of this disclosure, CORESET#0 occupies the entire frequency domain channel bandwidth, which is not limited.

[0089] In other words, the parameter controlResourceSetZero in the PBCH payload can include only N LSBs, with the N least significant bits used to indicate the configuration parameters in the first n rows of the CORESET#0 configuration table. N is less than 4, n is less than or equal to 8, and both N and n are positive integers. Alternatively, the parameter controlResourceSetZero in the PBCH payload can include only M bits, with the M bits used to indicate the number of symbols occupied by CORESET#0. M is less than 4, and CORESET#0 occupies the entire frequency domain channel bandwidth. M is a positive integer, and there are no restrictions on this.

[0090] In some embodiments, the N least significant bits (LSBs) are used to indicate the configuration parameters of the first n rows in the CORESET#0 configuration table, where N is less than 4 and n is less than or equal to 8. For example, N can be 3 and n can be 8, in which case the 3 least significant bits (LSBs) are used to indicate the configuration parameters of the first 8 rows in the CORESET#0 configuration table. Of course, N can also be any positive integer less than 4, n can be any positive integer less than or equal to 8, and M can also be any positive integer less than 4, without any restriction.

[0091] For example, in some embodiments, some bits of pdcch-ConfigSIB1 are used to indicate the partially valid CORESET#0 configuration, such as reserving the lowest three bits to indicate the first n rows (n<=8) in the CORESET#0 configuration table; or CORESET#0 may occupy the entire frequency domain channel bandwidth, so there is no need to indicate the frequency domain resource width for CORESET#0 again, only M bits are needed to indicate the number of symbols occupied by CORESET#0 (where M<4). Therefore, it is also possible to consider removing some invalid bits to minimize the PBCH payload.

[0092] In some embodiments of this disclosure, the length of the cyclic redundancy check (CRC) bits corresponding to the PBCH payload can be further reduced. Specifically, the number of CRC bits for PBCH transmitted in a dedicated spectrum system of less than 5MHz is one of 16 bits, 19 bits, or 21 bits, thereby effectively reducing the number of bits occupied by the CRC and flexibly reducing the PBCH payload.

[0093] It should be noted that the Physical Broadcast Channel (PBCH) transmission method provided in any of the above embodiments of this disclosure can be executed alone, or can be executed together with possible implementation methods in other embodiments, or can be executed together with any technical solution in related technologies.

[0094] Therefore, in this embodiment of the disclosure, the implementation method for effectively reducing the PBCH payload can be flexibly selected to effectively maintain a low code rate under the condition of limited frequency resources, thereby greatly improving the transmission performance of PBCH and minimizing the system resource overhead used for periodic broadcast PBCH.

[0095] Figure 3 This is a flowchart illustrating another Physical Broadcast Channel (PBCH) transmission method provided in this embodiment, which is executed by a network device. The PBCH transmission method in this embodiment can be applied to network devices without limitation.

[0096] like Figure 3 As shown, the method may include, but is not limited to, the following steps:

[0097] S301: Encode the PBCH payload to obtain the encoded bit sequence.

[0098] In some embodiments, after determining the PBCH payload, the PBCH payload can be polar-coded. The bit sequence obtained by polar coding can be referred to as the encoded bit sequence, and there is no limitation on this.

[0099] S302: Rate matching is performed on the encoded bit sequence based on the system bandwidth, and the encoded bit sequence is mapped to the bandwidth of the system spectrum to obtain the mapped orthogonal frequency division multiplexing (OFDM) symbol, wherein the system spectrum is less than the first bandwidth.

[0100] In some embodiments, the system bandwidth may be less than the first bandwidth. For a description of the first bandwidth, please refer to the above embodiments, which will not be repeated here.

[0101] After encoding the PBCH payload to obtain the encoded bit sequence, the encoded bit sequence can be rate matched directly based on the system bandwidth, and the encoded bit sequence can be mapped to the bandwidth of the system spectrum to obtain the mapped orthogonal frequency division multiplexing (OFDM) symbol, and then step S303 is executed.

[0102] S303: Transmit the mapped OFDM symbol to the terminal device.

[0103] In some embodiments, the mapped OFDM symbols can be transmitted to the terminal device based on the system spectrum, and there are no restrictions on this.

[0104] For example, encoded bits (an optional example of an encoded bit sequence) are mapped to a system bandwidth of 3 MHz (or less than or equal to 3 MHz (containing 15 RBs or 16 RBs)) through rate-macthing without restriction.

[0105] Therefore, in this embodiment, the PBCH payload is encoded to obtain an encoded bit sequence, and the encoded bit sequence is rate-matched based on the system bandwidth. The encoded bit sequence is then mapped to the bandwidth of the system spectrum to obtain the mapped Orthogonal Frequency Division Multiplexing (OFDM) symbols. The mapped OFDM symbols are then transmitted to the terminal equipment. This allows for efficient transmission of the PBCH at a lower code rate under limited frequency resources, thereby significantly improving the transmission performance of the PBCH and making it suitable for personalized private network systems.

[0106] Figure 4 This is a flowchart illustrating another Physical Broadcast Channel (PBCH) transmission method provided in this embodiment, which is executed by a network device. The PBCH transmission method in this embodiment can be applied to network devices without limitation.

[0107] like Figure 4As shown, the method may include, but is not limited to, the following steps:

[0108] S401: Encode the PBCH payload to obtain the encoded bit sequence.

[0109] In some embodiments, after determining the PBCH payload, the PBCH payload can be polar-coded. The bit sequence obtained by polar coding can be referred to as the encoded bit sequence, and there is no limitation on this.

[0110] S402: Based on the original SSB time-frequency resource structure, rate matching and resource mapping are performed on the encoded bit sequence to obtain OFDM symbols on physical resources.

[0111] Among them, the SSB time-frequency resource structure is used to describe the time-frequency resource distribution of the SSB.

[0112] In some embodiments, rate matching and resource mapping can be performed on the encoded bit sequence based on the SSB time-frequency resource structure, so that OFDM symbols on physical resources can be obtained.

[0113] S403: Reserve a portion of the OFDM symbols on the physical resources that do not exceed the bandwidth of the system spectrum, wherein the system spectrum is less than the first bandwidth.

[0114] Since the rate matching and resource mapping of the encoded bit sequence are based on the SSB time-frequency resource structure, the OFDM symbols on the physical resources may contain OFDM symbols that exceed the bandwidth of the system spectrum. In this embodiment, the OFDM symbols that exceed the bandwidth of the system spectrum can be deleted, and the OFDM symbols on the physical resources that do not exceed the bandwidth of the system spectrum can be retained, and then S404 is executed.

[0115] S404: Transmit some OFDM symbols to the terminal equipment.

[0116] In some embodiments, a portion of OFDM symbols not exceeding the bandwidth of the system spectrum may be transmitted to the terminal device based on the system spectrum, without limitation.

[0117] For example, for the encoded bits (encoded bits are an optional example of an encoded bit sequence), the SSB time-frequency resource structure (containing 20 RBs) in the related technology is still used for rate matching and resource mapping. Then, symbols on physical resources that exceed the system bandwidth are removed by puncturing, and OFDM modulation and data transmission are performed without any restrictions.

[0118] Therefore, in this embodiment, the PBCH payload is encoded to obtain an encoded bit sequence. Based on the SSB time-frequency resource structure, rate matching and resource mapping are performed on the encoded bit sequence to map OFDM symbols on physical resources. A portion of the OFDM symbols on the physical resources that does not exceed the bandwidth of the system spectrum is retained. This portion of OFDM symbols is then transmitted to the terminal device. This allows for efficient PBCH transmission at a lower code rate under limited frequency resources, thereby significantly improving PBCH transmission performance. Furthermore, it makes the PBCH transmission method more flexible and effectively applicable to customized private network systems.

[0119] It should be noted that in the following embodiments, the descriptions of the same or corresponding terms and method steps as in the above embodiments can be found in the above embodiments, and will not be repeated here.

[0120] Figure 5 This is a flowchart illustrating another physical broadcast channel (PBCH) transmission method provided in this embodiment, which is executed by a terminal device. The PBCH transmission method in this embodiment can be applied to terminal devices without limitation.

[0121] like Figure 5 As shown, the method may include, but is not limited to, the following steps:

[0122] S501: Based on a system spectrum less than the first bandwidth, receive each synchronization signal and the physical broadcast channel PBCH payload of the physical broadcast channel PBCH block SSB transmitted by the network device.

[0123] The first bandwidth can refer to the bandwidth of a system with limited frequency resources.

[0124] In some embodiments, the first bandwidth may be, for example, the bandwidth capable of providing communication services for a private network system, such as a system providing communication services for dedicated services like power systems, railway systems, public protection, and disaster relief. The first bandwidth may specifically be, for example, 5 MHz; however, it can also be any other possible bandwidth value, without limitation.

[0125] In this embodiment of the disclosure, each synchronization signal and the physical broadcast channel PBCH payload of the physical broadcast channel block SSB transmitted by the network device can be received based on a system spectrum less than the first bandwidth. Thus, the transmission performance of PBCH can be effectively improved under the condition of limited frequency resources.

[0126] In other words, in this embodiment of the present disclosure, the network device transmits the physical broadcast channel (PBCH) payload of each synchronization signal and physical broadcast channel block (SSB) to the terminal device based on a system spectrum less than the first bandwidth. For example, the PBCH payload of each SSB in the SSB burst can be transmitted using a system spectrum less than 5 MHz. Then, the terminal device can receive the PBCH payload of each SSB transmitted by the network device based on a system spectrum less than the first bandwidth.

[0127] In this embodiment, by receiving each synchronization signal transmitted by the network device and the physical broadcast channel PBCH payload of the physical broadcast channel block SSB based on a system spectrum less than the first bandwidth, the transmission performance of PBCH can be effectively improved under the condition of limited frequency resources.

[0128] In some embodiments of this disclosure, the first bandwidth is 5 MHz, thereby enabling the transmission of the PBCH payload of each SSB to the terminal device based on a system spectrum of less than 5 MHz.

[0129] In some embodiments of this disclosure, the bandwidth of the system spectrum may also be at least one of 3MHz, 2.8MHz, 3.6MHz, or a bandwidth value between 2.8MHz and 3.6MHz, and there is no limitation thereto.

[0130] Therefore, in this embodiment of the disclosure, it is possible to transmit the PBCH payload of each SSB to the terminal device based on the personalized system spectrum, ensuring that good PBCH transmission performance can be obtained under different frequency resource conditions.

[0131] In some embodiments of this disclosure, the PBCH payload may not carry the common subcarrier spacing (subCarrierSpacingCommon), spare, message extension (messageClassExtension), or parameters. parameter In addition to one or more of the SSB index information, it is possible to effectively maintain a low code rate under limited frequency resources, thereby greatly improving the transmission performance of PBCH.

[0132] In other words, this embodiment supports pruning the PBCH payload for each SSB. The pruned PBCH payload size does not carry the common subcarrier spacing (subCarrierSpacingCommon), spare, message class extension, or parameters. parameter And one or more items from the SSB index information.

[0133] For example, considering that dedicated spectrum typically only supports 15kHz sub-carrier spacing (SCS), the subCarrierSpacingCommon field in the MIB can be removed. The subCarrierSpacingCommon field is used to indicate the subcarrier spacing used for initial access messages and system messages (such as Msg2). It is also worth considering removing the spare field and the message extension spare messageClassExtension field (1 bit) to minimize the PBCH payload.

[0134] For example, the bits provided by the physical layer in the PBCH payload can be trimmed to further reduce the PBCH payload.

[0135] For example, the two least reserved bits provided by the physical layer in the PBCH payload can also be removed. Since some dedicated spectra (n8, n26, n28, n100) are all less than 3 GHz, there are at most four SSB indices given their SSB time-domain location distribution. Therefore, the SSB index information is carried in the demodulation reference signal sequence (DMRS sequence). The PBCH payload does not contain SSB index information. Therefore, the reserved bit parameters provided by the physical layer can be removed. and / or parameters delete.

[0136] In some embodiments of this disclosure, the PBCH payload may include an SSB subcarrier offset indicator, wherein the SSB subcarrier offset indicator is configured via ssb-SubcarrierOffset, and the configuration parameters of the SSB subcarrier offset indicator do not include parameters. Furthermore, the valid subcarrier offset value range for the SSB subcarrier offset indicator is 0 <= k. ssb <=11, the carrier frequency belongs to the FR1 frequency range, k ssb This indicates an effective subcarrier offset, thereby reducing the number of bits occupied by the SSB subcarrier offset indicator to enable flexible reduction of the PBCH payload.

[0137] In other words, in this embodiment of the disclosure, considering that the dedicated spectrum typically only supports a 15kHz SCS, the k-band can be removed. ssb The highest bit occupies 1 bit, meaning that for dedicated spectrums of FR1 less than 5MHz, 4 bits are used to indicate k. ssb ,k ssb The effective subcarrier offset range is 0 <= k ssb <=11.

[0138] In some embodiments of this disclosure, the PBCH payload also includes the parameter pdcch-ConfigSIB1; wherein the parameter pdcch-ConfigSIB1 does not include the four highest bits MSB controlResourceSetZero, and the CORESET#0 associated with the SSB uses a fixed time-frequency domain bandwidth, thereby enabling flexible reduction of the PBCH payload.

[0139] The parameter pdcch-ConfigSIB1 can be used to configure the control resource set and listening timing of the Type0-PDDCH public search space. CORESET#0 refers to the abbreviation of the control resource set CORESET of Type0-PDDCH CSS in the protocol specification. Type0-PDDCH CSS is a type of public search space CSS.

[0140] In some embodiments, the time-frequency resource information of CORESET0 can be determined by looking up the controlResourceSetZero field of the four most significant bits (MSB) in Pdcch-ConfigSIB1.

[0141] In some embodiments, the SSB may carry configuration information for the associated CORESET#0 and the listening timing for Type0-PDDCHCSS.

[0142] In this embodiment of the disclosure, for the configuration of CORESET#0, one possible implementation is to use a fixed CORESET#0 time-frequency domain bandwidth. For example, CORESET#0 is fixed to use the configuration of {3 OFDM symbols, full bandwidth}. Therefore, it is possible to consider removing the high four bits of PDCCH-ConfigSIB1, that is, to make the parameter pdcch-ConfigSIB1 not carry the 4 highest bits MSB controlResourceSetZero.

[0143] In some embodiments of this disclosure, the PBCH payload may further include the parameter controlResourceSetZero, which includes at least one of the following: N least significant bits (LSBs), wherein the N LSBs are used to indicate the configuration parameters of the first n rows in the CORESET#0 configuration table, N is less than 4, n is less than or equal to 8, and N and n are both positive integers; M bits, wherein the M bits are used to indicate the number of symbols occupied by CORESET#0, M is less than 4, and M is a positive integer, effectively reducing the bits occupied by the parameter controlResourceSetZero in the PBCH payload to achieve flexible reduction of the PBCH payload.

[0144] In some embodiments of this disclosure, CORESET#0 occupies the entire frequency domain channel bandwidth, which is not limited.

[0145] In other words, the parameter controlResourceSetZero in the PBCH payload can include only N LSBs, with the N least significant bits used to indicate the configuration parameters in the first n rows of the CORESET#0 configuration table. N is less than 4, n is less than or equal to 8, and both N and n are positive integers. Alternatively, the parameter controlResourceSetZero in the PBCH payload can include only M bits, with the M bits used to indicate the number of symbols occupied by CORESET#0. M is less than 4, and CORESET#0 occupies the entire frequency domain channel bandwidth. M is a positive integer, and there are no restrictions on this.

[0146] In some embodiments, the N least significant bits (LSBs) are used to indicate the configuration parameters of the first n rows in the CORESET#0 configuration table, where N is less than 4 and n is less than or equal to 8. For example, N can be 3 and n can be 8, in which case the 3 least significant bits (LSBs) are used to indicate the configuration parameters of the first 8 rows in the CORESET#0 configuration table. Of course, N can also be any positive integer less than 4, n can be any positive integer less than or equal to 8, and M can also be any positive integer less than 4, without any restriction.

[0147] For example, in some embodiments, some bits of pdcch-ConfigSIB1 are used to indicate the partially valid CORESET#0 configuration, such as reserving the lowest three bits to indicate the first n rows (n<=8) in the CORESET#0 configuration table; or CORESET#0 may occupy the entire frequency domain channel bandwidth, so there is no need to indicate the frequency domain resource width for CORESET#0 again, only M bits are needed to indicate the number of symbols occupied by CORESET#0 (where M<4). Therefore, it is also possible to consider removing some invalid bits to minimize the PBCH payload.

[0148] In some embodiments of this disclosure, the length of the cyclic redundancy check (CRC) bits corresponding to the PBCH payload can be further reduced. Specifically, the number of CRC bits for PBCH transmitted by a dedicated spectrum system less than 5MHz is one of 16 bits, 19 bits, or 21 bits, thereby effectively reducing the number of bits occupied by the CRC and flexibly reducing the PBCH payload.

[0149] It should be noted that the Physical Broadcast Channel (PBCH) transmission method provided in any of the above embodiments of this disclosure can be executed alone, or can be executed together with possible implementation methods in other embodiments, or can be executed together with any technical solution in related technologies.

[0150] Therefore, in this embodiment of the disclosure, the implementation method for effectively reducing the PBCH payload can be flexibly selected to effectively maintain a low code rate under the condition of limited frequency resources, thereby greatly improving the transmission performance of PBCH and minimizing the system resource overhead used for periodic broadcast PBCH.

[0151] Figure 6 This is a flowchart illustrating another physical broadcast channel (PBCH) transmission method provided in this embodiment, which is executed by a terminal device. The PBCH transmission method in this embodiment can be applied to terminal devices without limitation.

[0152] like Figure 6 As shown, the method may include, but is not limited to, the following steps:

[0153] S601: Receive the mapped OFDM symbols transmitted by the network device, wherein the mapped OFDM symbols are obtained by rate matching of the bit sequence after encoding the PBCH payload based on the system bandwidth, and mapping the encoded bit sequence to the bandwidth of the system spectrum.

[0154] In some embodiments, the orthogonal frequency division multiplexing (OFDM) symbols mapped from network devices can be received based on the system spectrum, and there are no restrictions on this.

[0155] In this embodiment, the Orthogonal Frequency Division Multiplexing (OFDM) symbols obtained by receiving the network device are rate-matched based on the bit sequence of the PBCH payload encoded by the system bandwidth, and the encoded bit sequence is mapped to the bandwidth of the system spectrum. This allows for efficient transmission of the PBCH at a lower code rate under limited frequency resources, thereby significantly improving the transmission performance of the PBCH and making it suitable for personalized private network systems.

[0156] Figure 7 This is a flowchart illustrating another physical broadcast channel (PBCH) transmission method provided in this embodiment, which is executed by a terminal device. The PBCH transmission method in this embodiment can be applied to terminal devices without limitation.

[0157] like Figure 7 As shown, the method may include, but is not limited to, the following steps:

[0158] S701: Receives a portion of OFDM symbols transmitted by network devices. The portion of OFDM symbols is obtained by rate matching and resource mapping of the bit sequence after encoding the PBCH payload based on the SSB time-frequency resource structure, and the OFDM symbols on physical resources that do not exceed the bandwidth of the system spectrum.

[0159] In some embodiments, the orthogonal frequency division multiplexing (OFDM) symbols mapped from network devices can be received based on the system spectrum, and there are no restrictions on this.

[0160] In this embodiment, the PBCH payload is encoded to obtain an encoded bit sequence. Based on the SSB time-frequency resource structure, rate matching and resource mapping are performed on the encoded bit sequence to map OFDM symbols on physical resources. A portion of the OFDM symbols on the physical resources that does not exceed the bandwidth of the system spectrum is retained. This portion of OFDM symbols is then transmitted to the terminal device. This allows for efficient PBCH transmission at a lower code rate under limited frequency resources, thereby significantly improving PBCH transmission performance. Furthermore, it makes the PBCH transmission method more flexible and effectively applicable to customized private network systems.

[0161] like Figure 8 As shown, Figure 8 This is a flowchart illustrating another Physical Broadcast Channel (PBCH) transmission method provided in this disclosure, showing the interaction between network devices and terminal devices. Detailed explanation follows:

[0162] 1. The network device encodes the PBCH payload to obtain the encoded bit sequence.

[0163] 2. The network device performs rate matching on the encoded bit sequence based on the system bandwidth and maps the encoded bit sequence to the bandwidth of the system spectrum to obtain the mapped Orthogonal Frequency Division Multiplexing (OFDM) symbol.

[0164] 3. Transmit the mapped OFDM symbols to the terminal equipment.

[0165] 4. The terminal device receives the PBCH payload of each SSB transmitted by the network device.

[0166] like Figure 9 As shown, Figure 9 This is a flowchart illustrating another Physical Broadcast Channel (PBCH) transmission method provided in this disclosure, showing the interaction between network devices and terminal devices. Detailed explanation follows:

[0167] 1. The network device encodes the PBCH payload to obtain the encoded bit sequence.

[0168] 2. Based on the SSB time-frequency resource structure, rate matching and resource mapping are performed on the encoded bit sequence to obtain OFDM symbols on physical resources.

[0169] 3. Retain a portion of the OFDM symbols on physical resources that do not exceed the bandwidth of the system spectrum.

[0170] 4. Transmit some OFDM symbols to the terminal equipment.

[0171] 5. The terminal equipment receives a portion of the OFDM symbols transmitted by the network equipment.

[0172] Figure 10 This is a schematic diagram of the structure of a communication device provided in an embodiment of this disclosure. Figure 10 The communication device 100 shown may include a transceiver module 1001 and a processing module 1002. The transceiver module 1001 may include a sending module and / or a receiving module. The sending module is used to implement the sending function, and the receiving module is used to implement the receiving function. The transceiver module 1001 can implement the sending function and / or the receiving function.

[0173] The communication device 100 may be a network device (such as the network device in the foregoing method embodiments), a device within a network device, or a device compatible with a network device. Alternatively, the communication device 100 may be a terminal device (such as the terminal device in the foregoing method embodiments), a device within a terminal device, or a device compatible with a terminal device.

[0174] Communication device 100, on the network equipment side, the device includes:

[0175] The transceiver module 1001 is used to transmit the physical broadcast channel PBCH payload of each synchronization signal and physical broadcast channel block SSB to the terminal device based on a system spectrum less than a first bandwidth.

[0176] By implementing the method of this disclosure, the network device transmits the physical broadcast channel (PBCH) payload of each synchronization signal and physical broadcast channel block SSB to the terminal device based on a system spectrum less than a first bandwidth, which can effectively improve the transmission performance of PBCH under the condition of limited frequency resources.

[0177] Communication device 100, on the terminal equipment side, the device includes:

[0178] The transceiver module 1001 is used to receive each synchronization signal and the physical broadcast channel PBCH payload of the physical broadcast channel block SSB transmitted by the network device based on a system spectrum less than a first bandwidth.

[0179] By implementing the method of this disclosure, the terminal device receives each synchronization signal and the physical broadcast channel PBCH payload of the physical broadcast channel block SSB transmitted by the network device based on a system spectrum less than a first bandwidth, which can effectively improve the transmission performance of PBCH under the condition of limited frequency resources.

[0180] Figure 11 This is a schematic diagram of another communication device provided in an embodiment of this disclosure. The communication device 110 can be a terminal device (as in the aforementioned method embodiments), a network device (as in the aforementioned method embodiments), a chip, chip system, or processor that supports the terminal device in implementing the above methods, or a chip, chip system, or processor that supports the network device in implementing the above methods. This device can be used to implement the methods described in the above method embodiments; for details, please refer to the descriptions in the above method embodiments.

[0181] The communication device 110 may include one or more processors 1101. The processor 1101 may be a general-purpose processor or a dedicated processor, such as a baseband processor or a central processing unit (CPU). The baseband processor can be used to process communication protocols and communication data, while the CPU can be used to control the communication device (e.g., base station, baseband chip, terminal equipment, terminal equipment chip, DU or CU, etc.), execute computer programs, and process data from the computer programs.

[0182] Optionally, the communication device 110 may further include one or more memories 1102, on which computer programs 1104 may be stored, and the processor 1101 may store computer programs 1103. The processor 1101 executes the computer programs 1104 and / or 1103 to cause the communication device 110 to perform the methods described in the above method embodiments.

[0183] Optionally, the memory 1102 may also store data. The communication device 110 and the memory 1102 may be provided separately or integrated together.

[0184] Optionally, the communication device 110 may also include a transceiver 1105 and an antenna 1106. The transceiver 1105 may be referred to as a transceiver unit, transceiver, or transceiver circuit, etc., and is used to implement the transmission and reception functions. The transceiver 1105 may include a receiver and a transmitter. The receiver may be referred to as a receiver or receiving circuit, etc., and is used to implement the receiving function; the transmitter may be referred to as a transmitter or transmitting circuit, etc., and is used to implement the transmitting function.

[0185] Optionally, the communication device 110 may further include one or more interface circuits 1107. The interface circuits 1107 are used to receive code instructions and transmit them to the processor 1101. The processor 1101 executes the code instructions to cause the communication device 110 to perform the methods described in the above method embodiments.

[0186] In one implementation, the processor 1101 may include a transceiver for implementing receiving and transmitting functions. For example, the transceiver may be a transceiver circuit, an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit for implementing receiving and transmitting functions may be separate or integrated. The aforementioned transceiver circuit, interface, or interface circuit can be used for reading and writing code / data, or it can be used for transmitting or relaying signals.

[0187] In one implementation, processor 1101 may store computer program 1103, which runs on processor 1101 and causes communication device 110 to perform the methods described in the above method embodiments. Computer program 1103 may be embedded in processor 1101, in which case processor 1101 may be implemented in hardware.

[0188] In one implementation, the communication device 110 may include circuitry capable of performing the functions of transmitting, receiving, or communicating as described in the foregoing method embodiments. The processor and transceiver described in this disclosure can be implemented on integrated circuits (ICs), analog ICs, radio frequency integrated circuits (RFICs), mixed-signal ICs, application-specific integrated circuits (ASICs), printed circuit boards (PCBs), electronic devices, etc. The processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal-oxide-semiconductor (CMOS), n-metal-oxide-semiconductor (NMOS), positive-channel metal-oxide-semiconductor (PMOS), bipolar junction transistors (BJTs), bipolar CMOS (BiCMOS), silicon-germanium (SiGe), gallium arsenide (GaAs), etc.

[0189] The communication device described in the above embodiments may be a terminal device (such as the terminal device in the foregoing method embodiments) or a network device (such as the network device in the foregoing method embodiments), but the scope of the communication device described in this disclosure is not limited thereto, and the structure of the communication device may vary. Figure 11 The communication device may be a standalone device or part of a larger device. For example, the communication device may be:

[0190] (1) Independent integrated circuit IC, or chip, or chip system or subsystem;

[0191] (2) A collection of one or more ICs, optionally including storage components for storing data and computer programs;

[0192] (3) ASIC, such as modem;

[0193] (4) Modules that can be embedded in other devices;

[0194] (5) Receivers, terminal equipment, smart terminal equipment, cellular phones, wireless equipment, handheld devices, mobile units, vehicle-mounted equipment, network equipment, cloud equipment, artificial intelligence equipment, etc.

[0195] (6) Others, etc.

[0196] For cases where the communication device can be a chip or a chip system, please refer to [link / reference]. Figure 12 , Figure 12 This is a schematic diagram of the chip structure according to an embodiment of this disclosure. Figure 12 The chip shown includes a processor 1201 and an interface 1202. There can be one or more processors 1201, and multiple interfaces 1202.

[0197] For cases where the chip is used to implement the functions of the network device in the embodiments of this disclosure:

[0198] Processor 1201 is used to implement the above. Figures 2-4 , Figure 8 , Figure 9 The methods and steps described in the embodiments.

[0199] Regarding the case where the chip is used to implement the functions of the terminal device in the embodiments of this disclosure:

[0200] Processor 1201 is used to implement the above. Figures 5-7 , Figure 8 , Figure 9 The methods and steps described in the embodiments.

[0201] Optionally, the chip also includes a memory 1203 for storing necessary computer programs and data.

[0202] Those skilled in the art will also understand that the various illustrative logical blocks and steps listed in the embodiments of this disclosure can be implemented by electronic hardware, computer software, or a combination of both. Whether such functionality is implemented in hardware or software depends on the specific application and the overall system design requirements. Those skilled in the art can implement the described functionality using various methods for each specific application, but such implementation should not be construed as exceeding the scope of protection of the embodiments of this disclosure.

[0203] This disclosure also provides a communication system, which includes the aforementioned... Figure 10 The embodiments include a communication device as a terminal device (such as the terminal device in the aforementioned method embodiments) and a communication device as a network device (such as the network device in the aforementioned method embodiments), or the system includes the aforementioned Figure 11 The embodiments include a communication device as a terminal device (such as the terminal device in the aforementioned method embodiments) and a communication device as a network device (such as the network device in the aforementioned method embodiments).

[0204] This disclosure also provides a readable storage medium having instructions stored thereon that, when executed by a computer, implement the functions of any of the above method embodiments.

[0205] This disclosure also provides a computer program product that, when executed by a computer, implements the functions of any of the above method embodiments.

[0206] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented, in whole or in part, as a computer program product. The computer program product includes one or more computer programs. When the computer program is loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this disclosure are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another. For example, the computer program can be transferred from one website, computer, server, or data center to another via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium accessible to a computer or a data storage device such as a server or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., high-density digital video discs (DVDs)), or semiconductor media (e.g., solid-state disks (SSDs)).

[0207] Those skilled in the art will understand that the various numerical designations such as "first," "second," etc., used in this disclosure are merely for the convenience of description and are not intended to limit the scope of the embodiments of this disclosure, nor do they indicate the order of events.

[0208] At least one of the features described in this disclosure can also be described as one or more, and multiple features can be two, three, four or more, and this disclosure does not impose any limitations. In the embodiments of this disclosure, for a technical feature, the technical features in that technical feature are distinguished by "first", "second", "third", "A", "B", "C" and "D", etc., and there is no sequential order or size order among the technical features described by "first", "second", "third", "A", "B", "C" and "D".

[0209] The correspondences shown in the tables of this disclosure can be configured or predefined. The values ​​of the information in each table are merely examples and can be configured to other values; this disclosure is not limiting. When configuring the correspondences between information and parameters, it is not necessarily required to configure all the correspondences shown in each table. For example, the correspondences shown in some rows of the tables in this disclosure may not be configured. Furthermore, appropriate modifications and adjustments can be made based on the above tables, such as splitting, merging, etc. The names of the parameters shown in the headers of the above tables can also use other names that the communication device can understand, and the values ​​or representations of the parameters can also be other values ​​or representations that the communication device can understand. In the implementation of the above tables, other data structures can also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables, or hash tables, etc.

[0210] The predefined terms in this disclosure can be understood as defined, predefined, stored, pre-stored, pre-negotiated, pre-configured, solidified, or pre-burned.

[0211] 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 disclosure.

[0212] Those skilled in the art will clearly 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.

[0213] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure 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 disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A method for transmitting a Physical Broadcast Channel (PBCH), characterized in that, The method, executed by a network device, includes: Based on the system spectrum less than the first bandwidth, the synchronization signal and the physical broadcast channel PBCH payload of the physical broadcast channel block SSB of the physical broadcast channel PBCH are transmitted to the terminal device. The transmission of the SSB's PBCH payload to the terminal device includes: The PBCH payload is encoded to obtain an encoded bit sequence; Based on the SSB time-frequency resource structure, the encoded bit sequence is rate matched and resource mapped to obtain OFDM symbols on physical resources; Reserve a portion of the OFDM symbols on the physical resources that do not exceed the bandwidth of the system spectrum; The portion of OFDM symbols is transmitted to the terminal device.

2. The method as described in claim 1, characterized in that, The first bandwidth is 5MHz.

3. The method as described in claim 1, characterized in that, The bandwidth of the system spectrum is at least one of the following: 3MHz; 2.8MHz; 3.6MHz; It is located between 2.8MHz and 3.6MHz.

4. The method according to any one of claims 1-3, characterized in that, The PBCH payload does not carry at least one of the following: Common subcarrier spacing (subCarrierSpacingCommon); spare; MessageClassExtension (or alternative messageClassExtension) parameter ; parameter ; SSB index information.

5. The method according to any one of claims 1-3, characterized in that, The PBCH payload includes an SSB subcarrier offset indication, wherein, The SSB subcarrier offset indication is configured via ssb-SubcarrierOffset; The configuration parameters for the SSB subcarrier offset indication do not include parameters. ;and The valid subcarrier offset value range of the SSB subcarrier offset indicator is 0 <= k. ssb <=11, carrier frequency belongs to FR1 frequency range, k ssb This indicates the effective subcarrier offset.

6. The method according to any one of claims 1-3, characterized in that, The PBCH payload includes the parameter pdcch-ConfigSIB1; wherein, the parameter pdcch-ConfigSIB1 does not include the four highest bits MSBcontrolResourceSetZero, and the CORESET#0 associated with the SSB uses a fixed time-frequency domain bandwidth.

7. The method according to any one of claims 1-3, characterized in that, The PBCH payload includes the parameter controlResourceSetZero; wherein the parameter controlResourceSetZero includes at least one of the following: N least significant bits (LSBs), wherein the N least significant bits (LSBs) are used to indicate the configuration parameters of the first n rows in the CORESET#0 configuration table, where N is less than 4, n is less than or equal to 8, and N and n are both positive integers; M bits, wherein the M bits are used to indicate the number of symbols occupied by CORESET#0, and M is less than 4 and M is a positive integer.

8. The method as described in claim 7, characterized in that, The CORESET#0 occupies the entire frequency domain channel bandwidth.

9. The method according to any one of claims 1-3, characterized in that, The PBCH payload corresponds to cyclic redundancy check (CRC) bits; wherein, for PBCH transmitted in a system spectrum of less than 5MHz, the number of CRC bits is one of 16 bits, 19 bits, or 21 bits.

10. The method according to any one of claims 1-3, characterized in that, The transmission of the SSB's PBCH payload to the terminal device includes: The PBCH payload is encoded to obtain an encoded bit sequence; Rate matching is performed on the encoded bit sequence based on the system bandwidth, and the encoded bit sequence is mapped to the bandwidth of the system spectrum to obtain the mapped orthogonal frequency division multiplexing (OFDM) symbol. The mapped OFDM symbol is transmitted to the terminal device.

11. A method for transmitting a Physical Broadcast Channel (PBCH), characterized in that, The method, executed by a terminal device, includes: Based on the system spectrum less than the first bandwidth, receive the synchronization signal transmitted by the network device and the physical broadcast channel PBCH payload of the physical broadcast channel block SSB of the physical broadcast channel PBCH. The PBCH payload of the SSB transmitted by the receiving network device includes: The network device receives a portion of OFDM symbols transmitted, wherein the portion of OFDM symbols is obtained by rate matching and resource mapping of the bit sequence after encoding the PBCH payload based on the SSB time-frequency resource structure, and the OFDM symbols on physical resources do not exceed the bandwidth of the system spectrum.

12. The method as described in claim 11, characterized in that, The first bandwidth is 5MHz.

13. The method as described in claim 11, characterized in that, The bandwidth of the system spectrum is at least one of the following: 3MHz; 2.8MHz; 3.6MHz; It is located between 2.8MHz and 3.6MHz.

14. The method according to any one of claims 11-13, characterized in that, The PBCH payload does not carry at least one of the following: Common subcarrier spacing (subCarrierSpacingCommon); spare; MessageClassExtension (or alternative messageClassExtension) parameter ; parameter ; SSB index information.

15. The method according to any one of claims 11-13, characterized in that, The PBCH payload includes an SSB subcarrier offset indication, wherein, The SSB subcarrier offset indication is configured via ssb-SubcarrierOffset; The configuration parameters for the SSB subcarrier offset indication do not include parameters. ;and The valid subcarrier offset value range of the SSB subcarrier offset indicator is 0 <= k. ssb <=11, carrier frequency belongs to FR1 frequency range, k ssb This indicates the effective subcarrier offset.

16. The method according to any one of claims 11-13, characterized in that, The PBCH payload includes the parameter pdcch-ConfigSIB1; wherein, the parameter pdcch-ConfigSIB1 does not include the four highest bits MSBcontrolResourceSetZero, and the CORESET#0 associated with the SSB uses a fixed time-frequency domain bandwidth.

17. The method according to any one of claims 11-13, characterized in that, The PBCH payload includes the parameter controlResourceSetZero; wherein the parameter controlResourceSetZero includes at least one of the following: N least significant bits (LSBs), wherein the N least significant bits (LSBs) are used to indicate the configuration parameters of the first n rows in the CORESET#0 configuration table, where N is less than 4, n is less than or equal to 8, and N and n are both positive integers; M bits, wherein the M bits are used to indicate the number of symbols occupied by CORESET#0, and M is less than 4 and M is a positive integer.

18. The method as described in claim 17, characterized in that, The CORESET#0 occupies the entire frequency domain channel bandwidth.

19. The method according to any one of claims 11-13, characterized in that, The PBCH payload corresponds to cyclic redundancy check (CRC) bits; wherein, for PBCH transmitted in a system spectrum of less than 5MHz, the number of CRC bits is one of 16 bits, 19 bits, or 21 bits.

20. The method according to any one of claims 11-13, characterized in that, The PBCH payload of the SSB transmitted by the receiving network device includes: The network device receives mapped OFDM symbols, wherein the mapped OFDM symbols are obtained by rate matching of the bit sequence encoded by the PBCH payload based on the system bandwidth and mapping the encoded bit sequence to the bandwidth of the system spectrum.

21. A communication device, characterized in that, The device includes: The transceiver module is used to transmit synchronization signals and the Physical Broadcast Channel (PBCH) payload of the Physical Broadcast Channel (PBCH) block SSB to the terminal device based on a system spectrum less than the first bandwidth. The transmission of the SSB's PBCH payload to the terminal device includes: The PBCH payload is encoded to obtain an encoded bit sequence; Based on the SSB time-frequency resource structure, the encoded bit sequence is rate matched and resource mapped to obtain OFDM symbols on physical resources; Reserve a portion of the OFDM symbols on the physical resources that do not exceed the bandwidth of the system spectrum; The portion of OFDM symbols is transmitted to the terminal device.

22. A communication device, characterized in that, The device includes: The transceiver module is used to receive synchronization signals transmitted by network devices and the Physical Broadcast Channel (PBCH) payload of the Physical Broadcast Channel (PBCH) block SSB based on a system spectrum less than the first bandwidth. The PBCH payload of the SSB transmitted by the receiving network device includes: The network device receives a portion of OFDM symbols transmitted, wherein the portion of OFDM symbols is obtained by rate matching and resource mapping of the bit sequence after encoding the PBCH payload based on the SSB time-frequency resource structure, and the OFDM symbols on physical resources do not exceed the bandwidth of the system spectrum.

23. A communication system, characterized in that, The communication system includes network devices and terminal devices, wherein the network devices perform the method as described in any one of claims 1-10, and the terminal devices perform the method as described in any one of claims 11-20.

24. A computer-readable storage medium for storing instructions that, when executed, cause the method of any one of claims 1-20 to be implemented.

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