System information block transmission method and apparatus

Abstract

Provided in the present application are a system information block transmission method and an apparatus. The method comprises: a terminal device receiving a first synchronization signal block (SSB) from a network device; and, on the basis of the first SSB, determining the transmission state of system information block (SIB)1 within a first time range, the first time range being predefined or preconfigured by a protocol. The technical solution of the present application determines the transmission state of SIB1 within the first time range by means of the first SSB, so as to determine on the basis of the first SSB whether a network device transmits SIB1. Thus, blind detection of the terminal device can be avoided so as to reduce the power consumption of the terminal device. In addition, the problem can also be avoided that when not first performing blind detection but to first acquire configuration information of an UL-WUS, the terminal device misses the opportunity of receiving SIB1, such that the network device re-transmits SIB1, thus reducing the power consumption of the network device.

Description

System message block sending method and device

[0001] This application claims priority to the Chinese patent application with application number 202410405005.6 filed with the State Intellectual Property Office of China on April 3, 2024, and priority to the Chinese patent application with invention name “System message block sending method and device”, as well as the Chinese patent application with application number 202411563686.5 filed with the State Intellectual Property Office of China on November 4, 2024, and priority to the Chinese patent application with invention name “System message block sending method and device”, all contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of communications, and more specifically, to a method and device for sending a system message block. Background Art

[0003] In a communication system, a terminal device receives a physical broadcast channel (PBCH) by detecting a synchronization signal block (SSB). The PBCH carries a master information block (MIB) that provides broadcast messages to the cell. The terminal device obtains a system information block (SIB) 1 through the MIB. The SIB1 can provide the parameters required for the terminal device to access the cell, allowing the terminal device to correctly receive signals sent by the network device. For example, the terminal device detects the SSB and obtains the subcarrier offset of the SSB to determine whether a control resource set (CORESET) 0 exists. When CORESET 0 exists, the SSB is associated with SIB1. Furthermore, the terminal device can receive the PDCCH that schedules SIB1 on CORESET 0, and then receive SIB1 to obtain the parameters required to access the cell.

[0004] Currently, network devices can send SIB1 according to the needs of terminal devices, and then the terminal devices use blind detection to determine whether the network devices send SIB1. This method may increase latency and power consumption of network devices.

[0005] In view of this, when the terminal device needs SIB1, how to reduce the latency and reduce the power consumption of the network equipment is an urgent problem that needs to be solved. Summary of the Invention

[0006] The present application provides a method and apparatus for sending a system message block to reduce latency and power consumption of network equipment.

[0007] In a first aspect, a method for sending a system message block is provided. The method can be executed by a terminal device, or can also be executed by a component of the terminal device (such as a chip or chip system or circuit or communication module), which is not limited in this application. For ease of description, the following is an example of execution by a terminal device.

[0008] The method includes: receiving a first synchronization signal block SSB from a network device; determining a sending status of a system message block SIB1 within a first time range based on the first SSB, where the first time range is predefined or preconfigured by a protocol.

[0009] Based on the above scheme, the terminal device determines the transmission status of SIB1 within the first time range through the first synchronization signal block, so that it can determine whether the network device sends SIB1 based on the first SSB, which can avoid blind detection of the terminal device and reduce the power consumption of the terminal device. At the same time, if the terminal device determines that the network device has not sent SIB1, it can obtain the configuration information of the uplink wake up signal (UL-WUS) from other cells as soon as possible, without waiting until the blind detection finds that SIB1 has not been sent to obtain the configuration information of UL-WUS. In this way, UL-WUS can be sent faster to request the network device to send SIB1, so that SIB1 can be received as soon as possible and then access the network. If the terminal device determines that the network device has sent SIB1, the terminal device can directly receive SIB1 without sending UL-WUS. Otherwise, the terminal device may not perform blind detection first, but directly obtain the configuration information of UL-WUS, and then send UL-WUS to request the network device to send SIB1. However, the network device may have already sent SIB1 at this time, causing the terminal device to miss the opportunity to receive SIB1 when obtaining the configuration information of UL-WUS, causing the network device to resend SIB1, which will increase the power consumption of the network device. Therefore, when the terminal device determines that the network device has sent SIB1, the terminal device does not need to send UL-WUS, thereby reducing the power consumption of the network device.

[0010] In combination with the first aspect, in certain implementations of the first aspect, the master information block MIB in the first SSB indicates the sending status of the SIB1 within the first time range.

[0011] After receiving the first SSB, the terminal device can determine the MIB carried on the PBCH, and the MIB includes bit information that can indicate whether the network device sends SIB1.

[0012] Exemplarily, the MIB indicates the transmission status of SIB1 within the first time range, including: first bit information in the MIB indicates the transmission status of SIB1 within the first time range.

[0013] In combination with the first aspect, in certain implementations of the first aspect, the MIB also indicates the transmission status of SIB1 corresponding to the second SSB, and the second SSB is different from the first SSB.

[0014] In combination with the first aspect, in certain implementations of the first aspect, the starting radio frame of the first time range on the system frame is determined by the number of radio frames occupied by the first time range.

[0015] In combination with the first aspect, in certain implementations of the first aspect, the SFN of the starting radio frame and the number of the radio frames satisfy: SFN mod M = 0, where M is the number of the radio frames and M is a positive integer.

[0016] Optionally, the SFN of the starting radio frame may also satisfy SFN mod N=X, where N is the number of radio frames, N is greater than or equal to M, N is a positive integer, and X is an integer less than or equal to N.

[0017] In combination with the first aspect, in certain implementations of the first aspect, the starting wireless frame of the first time range on the system frame is the wireless frame where the first SSB is located; or, the starting wireless frame of the first time range on the system frame is the wireless frame after the wireless frame where the first SSB is located.

[0018] Optionally, the system frame occupied by the first time range is the system frame occupied by the time period, or the system frame occupied by the first time range is the system frame occupied by one or more time periods after the time period, wherein the system frame occupied by the time period includes the system frame where the first SSB is located.

[0019] In combination with the first aspect, in certain implementations of the first aspect, when the MIB indicates that the SIB1 is sent, the MIB also indicates a duration for sending the SIB1.

[0020] Based on the above solution, by indicating the transmission duration of SIB1 through MIB, the terminal device can know the start time and end time of SIB1, which can avoid the network device from sending SIB1 all the time, thereby reducing the power consumption of the network device.

[0021] In combination with the first aspect, in certain implementations of the first aspect, when the MIB indicates that the SIB1 is sent within the first time range, the first time range includes L monitoring occasions (MO) of search space (SS) 0, where L is a positive integer.

[0022] Based on the above scheme, the time range for sending SIB1 is indicated by MIB, so that the terminal device can know the timing of SIB1 transmission, so that the terminal device will not send UL-WUS to request the network device to send SIB1 within the sending time range of SIB1, which can avoid the network device from receiving UL-WUS during this period, thereby reducing the power consumption of the network device.

[0023] In combination with the first aspect, in certain implementations of the first aspect, the starting MO among the L MOs is associated with the beam of the first SSB.

[0024] Optionally, the starting MO among the L MOs is not associated with the beam of the first SSB.

[0025] It should be noted that the starting MO can be understood as the first MO, and the first MO can be associated with the beam of any SSB.

[0026] In combination with the first aspect, in certain implementations of the first aspect, the starting MO among the L MOs is different from or spaced from the time unit where the first SSB is located by a second time range.

[0027] In combination with the first aspect, in certain implementations of the first aspect, the value of L is predefined by the protocol or preconfigured through signaling.

[0028] In combination with the first aspect, in certain implementations of the first aspect, when the MIB indicates that the SIB1 is sent within a first time range, the first time range includes a first time window, the start time of the first time window is the next time unit after the time unit where the first SSB is located, and the end time of the first time window is the time unit where the first physical random access channel (PRACH) opportunity associated with the first SSB is located or the previous time unit where the first PRACH opportunity is located, and the first PRACH opportunity is located after the time unit where the first SSB is located.

[0029] In combination with the first aspect, in some implementations of the first aspect, when the MIB indicates that the SIB1 is not sent, the method further includes: sending a first signal, where the first signal is used to request the network device to send the SIB1; and receiving the SIB1.

[0030] Based on the above solution, the terminal device only sends the first signal to request the network device to send SIB1 when the MIB indicates that the network device has not sent SIB1. In this way, since the terminal device already knows that the network device has not sent SIB1, it will not miss the SIB1 sent by the network device. This prevents the network device from sending SIB1 multiple times, thereby reducing the power consumption of the network device. At the same time, the terminal device does not need to blindly receive SIB1 first, thereby reducing the power consumption of the terminal device.

[0031] In combination with the first aspect, in some implementations of the first aspect, before receiving the SIB1, the method further includes: receiving first response information, where the first response information is used to indicate a sending duration of the SIB1.

[0032] Based on the above scheme, the terminal device indicates the sending duration of the system message block through the first response information, so that when the current terminal device needs SIB1, it can know the sending duration of the network device. In this way, when multiple terminal devices need to receive SIB1, the network device only needs to send SIB1 within the sending duration, so that multiple terminal devices can receive SIB1 within the sending duration, thereby reducing the power consumption of the network device.

[0033] In combination with the first aspect, in certain implementations of the first aspect, the starting wireless frame of the transmission duration of the SIB1 is the wireless frame where the first response information is located; or, the starting wireless frame of the transmission duration of the SIB1 is the wireless frame after the wireless frame where the first response information is located.

[0034] In a second aspect, a method for sending a system message block is provided. The method can be performed by a communication device, which can be a network device, or can be performed by a component of the network device (such as a chip or chip system or circuit or communication module), which is not limited in this application. For ease of description, the following is an example of execution by a communication device.

[0035] The method includes: sending a first synchronization signal block SSB, where the first SSB indicates the sending status of a system message block SIB1 within a first time range, where the first time range is predetermined or preconfigured by a protocol.

[0036] The method provided in the second aspect is a method corresponding to the first aspect and is executed by a communication device, and therefore can also achieve the beneficial effects that can be achieved by the first aspect.

[0037] In combination with the second aspect, in certain implementations of the second aspect, the master information block MIB in the first SSB indicates the sending status of the SIB1 within the first time range.

[0038] In combination with the second aspect, in certain implementations of the second aspect, the MIB also indicates the transmission status of SIB1 corresponding to the second SSB, and the second SSB is different from the first SSB.

[0039] In combination with the second aspect, in certain implementations of the second aspect, the starting radio frame of the first time range on the system frame is determined by the number of radio frames occupied by the first time range.

[0040] In combination with the second aspect, in certain implementations of the second aspect, the SFN of the starting radio frame and the number of the radio frames satisfy: SFN mod M = 0, where M is the number of the radio frames and M is a positive integer.

[0041] Optionally, the SFN of the starting radio frame may also satisfy SFN mod N=X, where N is the number of radio frames, N is greater than or equal to M, N is a positive integer, and X is an integer less than or equal to N.

[0042] In combination with the second aspect, in certain implementations of the second aspect, the starting wireless frame of the first time range on the system frame is the wireless frame where the first SSB is located; or, the starting wireless frame of the first time range on the system frame is the wireless frame after the wireless frame where the first SSB is located.

[0043] In combination with the second aspect, in certain implementations of the second aspect, when the MIB indicates that the SIB1 is sent, the MIB also indicates a duration for sending the SIB1.

[0044] In combination with the second aspect, in certain implementations of the second aspect, when the MIB indicates that the SIB1 is sent within the first time range, the first time range includes L monitoring opportunities MO of the search space SS 0, where L is a positive integer.

[0045] In combination with the second aspect, in certain implementations of the second aspect, the starting MO among the L MOs is associated with the beam of the first SSB.

[0046] Optionally, the starting MO among the L MOs is not associated with the beam of the first SSB.

[0047] In combination with the second aspect, in certain implementations of the second aspect, the starting MO among the L MOs is different from or spaced from the time unit where the first SSB is located by a second time range.

[0048] In combination with the second aspect, in certain implementations of the second aspect, the value of L is predefined by a protocol or the value of L is preconfigured to the terminal through signaling.

[0049] In combination with the second aspect, in certain implementations of the second aspect, when the MIB indicates that the SIB1 is sent within a first time range, the first time range includes a first time window, the start time of the first time window is the next time unit after the time unit where the first SSB is located, and the end time of the first time window is the time unit where the first physical random access channel PRACH opportunity associated with the first SSB is located or the previous time unit where the first PRACH opportunity is located, and the first PRACH opportunity is located after the time unit where the first SSB is located.

[0050] In combination with the second aspect, in some implementations of the second aspect, when the MIB indicates that the SIB1 is not sent, the method further includes: receiving a first signal, the first signal being used to request the communication device to send the SIB1; and sending the SIB1.

[0051] In combination with the second aspect, in some implementations of the second aspect, before sending the SIB1, the method further includes: sending first response information, where the first response information is used to indicate a sending duration of the SIB1.

[0052] With reference to the second aspect, in certain implementations of the second aspect, the starting radio frame of the transmission duration of the SIB1 is the radio frame where the first response information is located; or,

[0053] The starting radio frame of the transmission duration of the SIB1 is the radio frame following the radio frame where the first response information is located.

[0054] In a third aspect, a method for sending a system message block is provided. This method can be executed by a terminal device, or by a component of a network device (such as a chip or chip system or circuit or communication module), which is not limited in this application. For ease of description, the following description is based on an example of execution by a terminal device.

[0055] The method includes: receiving a first synchronization signal block SSB from a network device; sending a first signal based on the first SSB, the first signal being used to request the network device to send a system message block SIB1; receiving a first response message, the first response message being used to indicate the sending duration of the SIB1.

[0056] Based on the above scheme, the terminal device determines the sending duration of SIB1 through the first response information, so that when the current terminal device needs SIB1, it can know the sending duration of SIB1 by the network device. When the sending duration of SIB1 by the network device has not yet ended and another terminal device also needs SIB1, the other terminal device can receive SIB1 within the remaining sending duration of SIB1 indicated by the first response information, so that the network device only needs to send SIB1 within the sending duration, so that multiple terminal devices can receive the system message block, thereby reducing the power consumption of the network device.

[0057] In combination with the third aspect, in certain implementations of the third aspect, the first response information is also used to indicate the transmission duration of SIB1 corresponding to the second SSB, and the second SSB is different from the first SSB.

[0058] In combination with the third aspect, in certain implementations of the third aspect, the starting wireless frame of the transmission duration of the SIB1 is the wireless frame where the first response information is located; or, the starting wireless frame of the transmission duration of the SIB1 is the wireless frame after the wireless frame where the first response information is located.

[0059] Based on the above solution, the terminal device can determine the starting position of the SIB1 transmission duration, so that the terminal device can better understand the transmission time of SIB1, avoid the network device from sending all the time, and reduce the power consumption of the network device.

[0060] In combination with the third aspect, in certain implementations of the third aspect, the SIB1 is received within the transmission duration of the SIB1 indicated by the first response information.

[0061] In a fourth aspect, a method for sending a system message block is provided. This method can be performed by a network device, or can also be performed by a component of the network device (such as a chip or chip system or circuit or communication module), which is not limited in this application. For ease of description, the following is an example of execution by a network device.

[0062] The method includes: sending a first synchronization signal block SSB; receiving a first signal, the first signal being used to request a network device to send a system message block SIB1; and sending a first response message, the first response message being used to indicate a sending duration of the SIB1.

[0063] The method provided in the fourth aspect is a method corresponding to the third aspect and is executed by a network device, and therefore can also achieve the beneficial effects that can be achieved by the third aspect.

[0064] In combination with the fourth aspect, in certain implementations of the fourth aspect, the first response information is also used to indicate the sending duration of SIB1 corresponding to the second SSB, and the second SSB is different from the first SSB.

[0065] In combination with the fourth aspect, in certain implementations of the fourth aspect, the starting wireless frame of the transmission duration of the SIB1 is the wireless frame where the first response information is located; or, the starting wireless frame of the transmission duration of the first SIB1 is the wireless frame after the wireless frame where the first response information is located.

[0066] In combination with the fourth aspect, in certain implementations of the fourth aspect, the first SIB1 is sent within the sending duration of the SIB1 indicated by the first response information.

[0067] For the undetailed beneficial effects and possible designs of the second to fourth aspects, please refer to the relevant description in the first aspect and will not be repeated here.

[0068] In a fifth aspect, a communication device is provided, which includes: a transceiver unit for receiving a first synchronization signal block SSB from a network device; a processing unit for determining the sending status of a system message block SIB1 within a first time range based on the first SSB, and the first time range is predefined or preconfigured by the protocol.

[0069] The transceiver unit can perform the receiving and sending processing in the aforementioned first aspect and its possible implementations, and the processing unit can perform other processing except receiving and sending in the aforementioned first aspect and its possible implementations.

[0070] In a sixth aspect, a communication device is provided, which includes: a transceiver unit for sending a first synchronization signal block SSB, where the first SSB indicates the sending status of the system message block SIB1 within a first time range, and the first time range is predetermined or preconfigured by the protocol.

[0071] The transceiver unit can perform the receiving and sending processing in the aforementioned second aspect and its possible implementations; optionally, the device also includes a processing unit, which can perform other processing in addition to receiving and sending in the aforementioned second aspect and its possible implementations.

[0072] In the seventh aspect, a communication device is provided, which includes: a transceiver unit for receiving a first synchronization signal block SSB from a network device; and sending a first signal based on the first SSB, wherein the first signal is used to request the network device to send a system message block SIB1; the transceiver unit is also used to receive a first response information, wherein the first response information is used to indicate the sending duration of the SIB1.

[0073] The transceiver unit can perform the receiving and sending processing in the aforementioned third aspect and its possible implementations. Optionally, the device also includes a processing unit, which can perform other processing in addition to receiving and sending in the aforementioned third aspect and its possible implementations.

[0074] In the eighth aspect, a communication device is provided, which includes: a transceiver unit for receiving a first signal, which is used to request the network device to send a system message block SIB1; the transceiver unit is also used to send a first response message, which is used to indicate the sending duration of the SIB1.

[0075] Optionally, the transceiver unit is also used to send a first synchronization signal block SSB.

[0076] The transceiver unit can perform the receiving and sending processing in the aforementioned fourth aspect and its possible implementations. Optionally, the device also includes a processing unit, which can perform other processing in addition to receiving and sending in the aforementioned fourth aspect and its possible implementations.

[0077] In a ninth aspect, a communication device is provided, comprising: at least one processor configured to execute a computer program or instruction to perform the method of aspects 1 to 4 and any possible implementation thereof. Optionally, the device further comprises a memory configured to store the computer program or instruction. Optionally, the device further comprises a communication interface coupled to the processor and configured to input the computer program or instruction into the processor or output information from the processor.

[0078] In one implementation, the apparatus is a communication device (such as a terminal device or a network device).

[0079] In another implementation, the device is a chip, a chip system, a circuit, or a communication module for a communication device (such as a terminal device or a network device).

[0080] In the tenth aspect, a communication system is provided, comprising: a network device and a terminal device, wherein the terminal device is used to execute the method in the possible implementation of the above-mentioned first aspect or third aspect, and the network device is used to execute the method in the possible implementation of the above-mentioned second aspect or fourth aspect.

[0081] In the eleventh aspect, a computer-readable storage medium is provided, which stores a computer program or code. When the computer program or code runs on a communication device, the communication device executes the method in the above-mentioned first to fourth aspects and any possible implementation thereof.

[0082] In the twelfth aspect, a chip is provided, which includes a processor and a communication interface. The processor reads instructions on the memory through the communication interface and executes the methods provided by the first to fourth aspects and any one of their implementation methods.

[0083] Optionally, as an implementation method, the chip also includes a memory, in which a computer program or instruction is stored, and the processor is used to execute the computer program or instruction on the memory. When the computer program or instruction is executed, the processor is used to execute the method provided by the above-mentioned first to fourth aspects and any one of their implementation methods.

[0084] In the thirteenth aspect, a computer program product is provided, comprising: a computer program code, which, when the computer program code is run on a communication device, enables the communication device to execute the methods in the above-mentioned first to fourth aspects and any possible implementation thereof. BRIEF DESCRIPTION OF THE DRAWINGS

[0085] FIG1 is a schematic diagram of a communication system applicable to an embodiment of the present application.

[0086] FIG2 is a schematic diagram of blind detection SIB1 of a terminal device.

[0087] FIG3 is a schematic flowchart of a method for sending a system message block according to an embodiment of the present application.

[0088] FIG4 is a schematic diagram of the SIB1 sending state provided in an embodiment of the present application.

[0089] FIG5 is another schematic diagram of the SIB1 sending status provided in an embodiment of the present application.

[0090] FIG6 is another schematic diagram of the SIB1 transmission status provided in an embodiment of the present application.

[0091] FIG7 is another schematic diagram of the SIB1 sending status provided in an embodiment of the present application.

[0092] FIG8 is another schematic diagram of the SIB1 sending status provided in an embodiment of the present application.

[0093] FIG9 is a schematic diagram of L MOs of SS 0 provided in an embodiment of the present application.

[0094] FIG10 is a schematic diagram of the SIB1 transmission duration provided in an embodiment of the present application.

[0095] FIG11 is another schematic flowchart of the system message block sending method provided in an embodiment of the present application.

[0096] FIG12 is a schematic block diagram of a communication device provided in an embodiment of the present application.

[0097] FIG13 is another schematic block diagram of a communication device provided in an embodiment of the present application.

[0098] FIG14 is a schematic block diagram of a chip system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0099] Figure 1 shows a schematic diagram of a communication system provided by an embodiment of the present application. As shown in Figure 1, the communication system 100 includes a radio access network (RAN) 110 and a core network (CN) 120. Optionally, the communication system 100 may also include the Internet 130. The RAN 110 may include at least one RAN node (such as 101a and 101b in the figure, collectively referred to as 101), and may also include at least one terminal device (such as 102a-102j in the figure, collectively referred to as 102). The terminal device is connected to the radio access network device via wireless, and the radio access network device is connected to the core network via wireless or wired. The core network device and the radio access network device can be independent and different physical devices, or the functions of the core network device and the logical functions of the radio access network device can be integrated into the same physical device, or a physical device can integrate some of the functions of the core network device and some of the functions of the radio access network device. Terminal devices and terminal devices, as well as radio access network devices and radio access network devices, can be connected to each other via wired or wireless means. FIG1 is only a schematic diagram. The communication system may further include other network devices, such as wireless relay devices and wireless backhaul devices, which are not shown in FIG1 .

[0100] In a communication system, a device can send signals to or receive signals from another device. Signals can include information, signaling, or data. Devices can also be replaced by entities, network entities, communication devices, communication modules, nodes, communication nodes, etc. The embodiments of this application are described using devices as an example.

[0101] The RAN 110 may be a cellular system related to the Third Generation Partnership Project (3GPP), such as 4G, 5G, future mobile communication systems, non-terrestrial network (NTN) systems, or future evolution systems. The RAN 100 may also be an open access network (O-RAN), a cloud radio access network (CRAN), or a wireless fidelity (Wi-Fi) system, or a communication system that integrates two or more of the above systems.

[0102] In the embodiments of the present application, a terminal device is a user-side device with wireless transceiver capabilities that can send signals to or receive signals from a base station. A terminal device may also be referred to as a terminal, user equipment (UE), mobile station, or mobile terminal. Terminals can be widely used in various scenarios, such as device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), the Internet of Things (IoT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grids, smart furniture, smart offices, smart wearables, smart transportation, and smart cities. A terminal may be a mobile phone, tablet computer, computer with wireless transceiver capabilities, wearable device, vehicle, aircraft, ship, robot, robotic arm, smart home appliance, or the like. The embodiments of the present application do not limit the specific technology or device form factor employed by the terminal device. In the embodiments of the present application, a RAN node 101 may also be referred to as an access network device, access node, or RAN entity, and is used to facilitate wireless access for terminal devices. Multiple RAN nodes 101 may be of the same type or different types. In some scenarios, the roles of RAN node 101 and terminal device 102 are relative. For example, network element 102i in Figure 1 can be a helicopter or drone, which can be configured as a mobile base station. For terminal device 102j accessing RAN 110 through network element 102i, network element 102i is a base station; however, for base station 101a, network element 102i is a terminal device. RAN node 101 and terminal device 102 are sometimes referred to as communication devices. For example, 110a and 101b in Figure 1 can be understood as communication devices with base station functions, and network elements 102a-102j can be understood as communication devices with terminal functions.

[0103] A RAN node, also known as a radio access network device, network device, RAN entity, or access node, facilitates wireless access to a communication system by a terminal. In one application scenario, a RAN node can be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next-generation NodeB (gNB) in a fifth-generation (5G) mobile communication system, a next-generation base station in a future mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system. A RAN node can be a macro base station (such as 110a in Figure 1), a micro base station, an indoor station (such as 110b in Figure 1), a relay node, or a donor node.

[0104] In another application scenario, multiple RAN nodes can collaborate to help terminals achieve wireless access, with different RAN nodes implementing portions of the base station's functions. For example, a RAN node can be a centralized unit (CU), a distributed unit (DU), or a radio unit (RU). The CU implements the base station's radio resource control protocol and packet data convergence protocol (PDCP) functions, as well as the service data adaptation protocol (SDAP) functions. The DU implements the base station's radio link control layer and medium access control (MAC) layer functions, as well as some or all of the physical layer functions. For detailed descriptions of each of the above protocol layers, please refer to the relevant 3GPP technical specifications. The RU can be used to implement the transmission and reception of radio frequency signals. The CU and DU can be two independent RAN nodes, or they can be integrated into the same RAN node, such as in a baseband unit (BBU). The RU can be included in radio frequency equipment, such as a remote radio unit (RRU) or an active antenna unit (AAU). The CU can be further divided into two types of RAN nodes: CU-control plane and CU-user plane.

[0105] In different systems, CU (or CU-CP and CU-UP), DU or RU may also have different names, but those skilled in the art can understand their meanings. For example, in the O-RAN system, CU may also be called O-CU (Open CU), DU may also be called O-DU, CU-CP may also be called O-CU-CP, CU-UP may also be called O-CU-UP, and RU may also be called O-RU. For the convenience of description, this application uses CU, CU-CP, CU-UP, DU and RU as examples for description. Any unit of CU (or CU-CP, CU-UP), DU and RU in this application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0106] Network devices and terminal devices, network devices and network end devices, and terminal devices can communicate through authorized spectrum, unauthorized spectrum, or both. They can communicate through spectrum below 6 gigahertz (GHz), spectrum above 6 GHz, or spectrum below 6 GHz and spectrum above 6 GHz simultaneously. The embodiments of this application do not limit the spectrum resources used for wireless communications.

[0107] In the embodiments of the present application, the functions of the network device may also be performed by a module (such as a chip) in the network, or by a control subsystem that includes the network device functions. The control subsystem that includes the network device functions here may be a control center in the above-mentioned application scenarios such as smart grid, industrial control, smart transportation, and smart city. The functions of the terminal device may also be performed by a module (such as a chip or a modem) in the terminal device, or by a device that includes the terminal device functions.

[0108] It should be noted that the embodiments of the present application do not limit the scenarios in which the network device is located. In addition, the network device can be a hardware device, or a software function running on dedicated hardware, or a software function running on general-purpose hardware, for example, an entity including dedicated or general-purpose hardware devices and software functions. The present application does not limit the specific form of the network device.

[0109] In the embodiments of the present application, the network devices and terminal devices may be fixed or mobile. They may be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; on water; or in the air on aircraft, balloons, and satellites. The embodiments of the present application do not limit the scenarios in which the network devices and terminal devices are located.

[0110] In order to facilitate understanding of the technical solution of this application, the relevant terms involved in this application are first introduced.

[0111] (1) Synchronous signal block SSB

[0112] SSB includes the primary synchronization signal (PSS), the secondary synchronization signal (SSS), the PBCH, and the demodulation reference signal (DMRS) used to demodulate the PBCH. The SSB period can be 5ms, 10ms, 20ms, 40ms, 80ms, or 160ms, etc. An SSB period can include multiple SSB signals (with different SSB indexes, such as SSB 0 to SSB 7, or SSB 1 to SSB 8), which is called an SSB burst. It is located in the first 5ms or last 5ms of the 10ms frame, where each SSB uses a different transmit beam but contains the same cell information. SSB is generally considered a broadcast channel for synchronization and cell search. Among them, PBCH can be understood as a channel where the base station often sends signals without distinguishing between user equipment. Any terminal device may search for it, and PBCH mainly carries MIB. Synchronization and cell search are for terminal devices. For example, if a terminal device wants to access a cell, it first performs a cell search. The network device then periodically sends SSBs, which the terminal receives to synchronize with the base station and obtain system information. Through cell search, the terminal device can obtain one or more of the following: time and frequency synchronization, the cell's physical ID and cyclic prefix length, and the cell's standard.

[0113] (2) Master Information Block (MIB)

[0114] The MIB includes information about the cell's barring status and can further receive the necessary physical layer information for other system messages, such as CORESET 0 and search space (SS) 0. Physical layer operations, such as scrambling, channel coding, rate matching, modulation, and mapping to physical resources, are performed on the bit information in the MIB to form the PBCH, which can form the SSB together with the PSS and SSS. CORESET 0 is the control resource set where the physical downlink control channel (PDCCH) required by the terminal device to receive SIB1 during initial access is located.

[0115] The MIB contains information such as the system frame number (SFN), sub-carrier spacing (SCS), sub-carrier offset of the SSB, the time-domain location of the DMRS of the physical downlink shared channel (PDSCH) carrying SIB1, and the PDCCH configuration related to SIB1. This information in the MIB allows the PDSCH to be received to obtain the SIB.

[0116] (3) System Information Block (SIB)

[0117] There are many types of SIBs, such as SIB1, SIB2, SIB3, SIB4, SIB5, SIB6, SIB7, SIB8, SIB9, SIB10, SIB11, SIB12, and SIB13. SIB1 is the most important of these. In addition to carrying parameters for the UE to access the cell (for example, cell selection parameters), SIB1 also carries scheduling information for other types of SIBs. If the UE cannot receive SIB1, it cannot receive other types of SIBs either. When the UE receives SIB1, it first detects the SSB and receives the PBCH to obtain the MIB. This allows it to obtain the CORESET 0 and SS 0 information required to receive SIB1, allowing it to receive SIB1. For example, the UE receives the PDCCH information that schedules the PDSCH carrying SIB1 on CORESET 0, and then receives the PDSCH information carrying SIB1 based on the PDCCH information.

[0118] For the terminal device (for the convenience of description, the following is an example of UE), when the SSB is detected, the subcarrier offset of the SSB can be obtained, and then k can be determined. ssB , k ssB k is the subcarrier offset between subcarrier 0 of the common resource block (CRB) and subcarrier 0 of the SSB, where k ssB The value of is different, the existence of CORESET 0 corresponding to SSB is different, so the existence of SIB1 is determined as follows:

[0119] Case 1:

[0120] For the frequency range (FR) 1, when 0≤k SSB ≤23, or for FR 2, when 0≤k SSBWhen ≤11, the SSB corresponding to CORESET 0 exists, that is, the SSB is associated with SIB1. In this case, the SSB is called a cell-defining SSB (CD-SSB). Furthermore, the pdcch-ConfigSIB1 field in the MIB can configure CORESET 0 and SS 0. The UE can then receive the PDCCH scheduling the PDSCH carrying SIB1 in CORESET 0 and SS 0, and thus receive SIB1.

[0121] Case 2:

[0122] For FR 1, when 24≤k SSB ≤29, or for FR 2, when 12≤k SSB When ≤13, the CORESET 0 corresponding to the SSB does not exist. In this case, the SSB is a non-cell-defining SSB (NCD-SSB). In this case, the pdcch-ConfigSIB1 field in the MIB indicates the offset of the global synchronization channel number (GSCN). A CD-SSB may exist at the frequency domain location of the GSCN offset.

[0123] Case 3:

[0124] For FR 1, when k SSB =30, or for FR 2, when k SSB =14, the CORESET 0 corresponding to the SSB does not exist. In this case, the SSB is an NCD-SSB, and the pdcch-ConfigSIB1 field in the MIB is not used.

[0125] Case 4:

[0126] For FR 1, when k SSB =31, or for FR 2, when k SSB =15, the CORESET 0 corresponding to the SSB does not exist. In this case, the SSB is an NCD-SSB, and the field pdcch-ConfigSIB1 in the MIB refers to the range of the GSCN, in which there is no CD-SSB.

[0127] Among them, in the above four cases, CORESET 0, SS 0 and GSCN offset (denoted as )The mapping of the field pdcch-ConfigSIB1 is shown in Table 1 and Table 2 respectively.

[0128] Table 1

[0129] Table 2

[0130] (4) Uplink wake-up signal (UL-WUS)

[0131] In an embodiment of the application, when a terminal device needs to receive SIB1, in one implementation, the terminal device sends a UL-WUS to the network device to request the network device to send SIB1, thereby enabling the terminal device to correctly access the cell. The UL-WUS configuration details may be obtained by the terminal device, or if the terminal device does not have UL-WUS configuration information (for example, the UL-WUS configuration information previously obtained by the terminal device has expired), the terminal device may re-acquire the UL-WUS configuration information.

[0132] Figure 2 is a schematic diagram of a terminal device blindly detecting SIB1. As shown in Figure 2, the white rectangles represent SSBs, and the black rectangles represent SIB1s. Assume that the network device transmits SSB signals for a period of 160ms, and the network device transmits SIB1 for a period of 640ms. After detecting the SSB, UE A first blindly detects SIB1. However, since the network device does not transmit SIB1 at this time, UE A cannot blindly detect SIB1. For example, if UE A does not blindly detect SIB1 during the first SSB transmission period, it will send a UL-WUS to the network device. After receiving this UL-WUS, the network device can determine that UE A currently requires SIB1, and therefore, the network device sends SIB1 to UE A. At this time, since UE A must first obtain UL-WUS configuration information from other non-energy-saving cells before transmitting this UL-WUS to the network device, the network device will transmit the SIB1 required by UE A after receiving this UL-WUS. For UE B, UE B first blindly detects SIB1 during the transmission cycle of the 5th SSB, and thus can detect SIB1; in another implementation method of UE detecting SIB1, after detecting SSB, UE B does not blindly detect SIB1 first, but first obtains the configuration information of UL-WUS or re-obtains the configuration information of UL-WUS. Then, during the time when UE B obtains the UL-WUS configuration information, UE B will miss the SIB1 sent by the network device within 640ms.

[0133] Therefore, when the network device sends SIB1 according to the needs of the terminal device, the terminal device will determine whether the network device sends SIB1 through blind detection, which will increase the power consumption of the terminal device. Specifically, if the terminal device does not detect SIB1 through blind detection, the terminal device will send UL-WUS to the network device to request the network device to send SIB1. This will increase the latency compared to the terminal device directly sending UL-WUS to request the network device SIB1. However, if the terminal device chooses to send UL-WUS directly, it may miss the SIB1 sent by the network device when sending UL-WUS, causing the network device to resend SIB1 after receiving UL-WUS, resulting in multiple SIB1 transmissions, thereby increasing the power consumption of the network device.

[0134] In view of this, the present application provides a method and apparatus for sending a system message block, wherein the terminal device determines the sending status of SIB1 within a first time range through a first synchronization signal block, thereby avoiding blind detection of the terminal device. At the same time, when the terminal device learns that the network device has not sent SIB1, it can immediately obtain UL-WUS configuration information, and then send UL-WUS to request the network device to send SIB1, which can reduce the delay for the terminal device to receive SIB1. In addition, since the terminal device can determine the sending status of SIB1 within the first time range, the terminal device can directly receive SIB1 when SIB1 is sent, without sending UL-WUS to request the network device to send SIB1, which can reduce the power consumption of the terminal device and the network device.

[0135] The following describes in detail the system message block sending method provided by the embodiment of the present application in conjunction with the accompanying drawings. The embodiment provided by the present application can be applied to the communication system shown in Figure 1 above. The technical solution of the present application is specifically described in conjunction with Figures 3 to 10. The execution subject can be a terminal device or network device, or a chip or circuit used in the terminal device or network device, or a functional module in the terminal device or network device that can call and execute a program.

[0136] FIG3 is a schematic flow chart of a method for sending a system message block according to an embodiment of the present application. As shown in FIG3 , the method 200 includes the following steps.

[0137] S210: The network device sends a first synchronization signal block to the terminal device. Correspondingly, the terminal device receives the first synchronization signal block from the network device.

[0138] Among them, after the terminal device receives the first synchronization signal block (i.e., the first SSB), it can determine the master information block (i.e., MIB) carried on the PBCH, and the MIB includes bit information that can indicate whether the network device sends a system message block.

[0139] Exemplarily, the MIB includes first bit information, which may be reserved bit information in the MIB, i.e., bit information not yet used in the MIB. It may also be bit information in the first CORESET (e.g., CORESET 0) and / or the first SS (e.g., SS 0) included in the MIB.

[0140] It should be noted that the cell corresponding to the first SSB is an energy-saving cell. For example, the cell corresponding to the first SSB is a cell to which the network device sends SIB1 on demand.

[0141] For ease of description, the following description is given by taking the system information block SIB1 as an example.

[0142] S220. The terminal device determines the sending status of the system message block within the first time range based on the first synchronization signal block.

[0143] Determining the transmission status of SIB1 within the first time range based on the first SSB can also be understood as determining the first time range based on the first SSB, or determining the time domain position of the first time range based on the first SSB. That is, the first time range corresponds to the first SSB, or the first SSB corresponds to the first time range. Then, the transmission status of SIB1 within the first time range is determined based on the first SSB.

[0144] Among them, the terminal device determines the sending status of SIB1 within the first time range based on the first SSB, including: the MIB in the first SSB indicates the sending status of SIB1 within the first time range.

[0145] The MIB in the first SSB indicates the transmission status of the SIB1 within the first time range. It can be understood that when the network device sends SIB1 within the first time range, the MIB indicates that the SIB1 is sent, or when the network device does not send SIB1 within the first time range, the MIB indicates that the SIB1 is not sent. In other words, the terminal device can know whether the network device sends SIB1 within the first time range through the MIB.

[0146] Exemplarily, the MIB indicates the transmission status of SIB1 within the first time range, including: first bit information in the MIB indicates the transmission status of SIB1 within the first time range.

[0147] In one implementation, when the first bit information is bit information in the MIB, for example, specifically bit information in a newly added first field, or reserved bit information, the transmission status of SIB1 within the first time range is determined based on the value of the first bit information. For example, when the first bit information is 0, it indicates that the first SIB1 is not transmitted; when the first bit information is 1, it indicates that the first SIB1 is transmitted; for another example, when the first bit information is 1, it indicates that the first SIB1 is not transmitted; when the first bit information is 0, it indicates that the first SIB1 is transmitted. This embodiment of the application does not limit the value of the first bit information.

[0148] It should be noted that the first field does not belong to the original fields in the MIB. The original fields in the MIB include: system frame number (sysemFrameNumer), subcarrier spacing (subCarrierSpacingCommon), SSB subcarrier offset (ssb-SubcarrierOffset), DMRS position (dmra-TypeA-Position), PDCCH configuration for scheduling PDSCH carrying SIB1 (pdcch-ConfigSIB1), cell residency information (cellBarred), cell intra-frequency reselection (intraFreqReselection), and fill bit (spare bit).

[0149] In another implementation, when the first bit information is bit information in the first CORESET and / or the first SS in the MIB, the transmission state of the first SIB1 in the first time range is determined according to the value of the first bit information in the first CORESET and / or the first SS. For example, the first CORESET is controlResourceSetZero and the first SS is searchSpaceZero. For FR 1, by k SSBWhen controlResourceSetZero and / or searchSpaceZero are 30, they indicate the sending status of SIB1. For example, controlResourceSetZero is used to indicate the sending status of SIB1. For another example, searchSpaceZero includes a parameter for indicating the sending status of SIB1. For another example, controlResourceSetZero and searchSpaceZero are jointly used to indicate the sending status of SIB1. For example, 16×controlResourceSetZero+searchSpaceZero is 0, indicating that SIB1 is not sent, and 16×controlResourceSetZero+searchSpaceZero is 1, indicating that SIB1 is sent.

[0150] For FR 2, it can be achieved by k SSB When controlResourceSetZero and / or searchSpaceZero = 14, it indicates the sending status of SIB1. For example, controlResourceSetZero is used to indicate the sending status of SIB1. For another example, searchSpaceZero is used to indicate the sending status of SIB1. For another example, controlResourceSetZero and searchSpaceZero are jointly used to indicate the sending status of SIB1. For example, 16×controlResourceSetZero+searchSpaceZero is 0, indicating that SIB1 is not sent, and 16×controlResourceSetZero+searchSpaceZero is 1, indicating that SIB1 is sent.

[0151] It should be noted that the first CORESET and the first SS are bit information in the original field pdcch-ConfigSIB1 in the MIB.

[0152] It should also be noted that the first time range can be predefined or preconfigured by the protocol, and the first time range can also be indicated by the MIB. Among them, the protocol predefined can be understood as one or more values ​​predefined by the protocol. For example, the protocol predefines a value of 160ms (i.e., the size of the first time range is 160ms). Alternatively, the protocol predefines multiple values, for example, FR 1 is 80ms (i.e., the size of the first time range is 80ms), and FR 2 is 160ms (i.e., the size of the first time range is 160ms). In an embodiment of the present application, the protocol can be a 3GPP protocol, for example, a 3GPP physical layer protocol, including TS38.211, 38.212, 38.213, 38.214, etc. Preconfigured can be understood as indicated, for example, through an MIB indication. The above-mentioned protocol can also be other protocols, and the embodiment of the present application is not limited to this.

[0153] Assuming that the value of the first time range can be {160ms, 80ms} (that is, the size of the first time range can be 80ms or 160ms), the second bit information in the MIB can indicate the first time range, then the second bit information can indicate that the size of the first time range is 160ms, or the second bit information can indicate that the size of the first time range is 80ms. For example, when the second bit information is 1, it indicates that the size of the first time range is 80ms; when the second bit information is 0, it indicates that the size of the first time range is 160ms. For another example, when the second bit information is 0, it indicates that the size of the first time range is 80ms; when the second bit information is 1, it indicates that the size of the first time range is 160ms. Among them, the second bit information can be bit information in the first MIB, such as bit information in the newly added first field, or reserved bit information.

[0154] It should also be noted that when the first time range has more values, more bits of information in the MIB are required to indicate the transmission status of SIB1. Assuming that the first time range has a value of {80ms, 160ms, 320ms, 640ms}, it needs to be represented by 2 bits. For example, the first bit information is 00 or 01 or 10 or 11. When the first bit information is 00, it indicates that the first time range size is 80ms; when the first bit information is 01, it indicates that the first time range size is 160ms; when the first bit information is 10, it indicates that the first time range size is 320ms; when the first bit information is 11, it indicates that the first time range size is 640ms. Correspondingly, when the first bit information is 00, it indicates that the first time range size is 640ms; when the first bit information is 01, it indicates that the first time range size is 320ms; when the first bit information is 10, it indicates that the first time range size is 160ms; and when the first bit information is 11, it indicates that the first time range size is 80ms. Alternatively, the first time range size corresponding to the first bit information being 00, 01, 10, or 11 can be any order of {80ms, 160ms, 320ms, 640ms}, which is not limited in this embodiment of the present application.

[0155] Optionally, the MIB also indicates the transmission status of SIB1 corresponding to the second SSB, and the second SSB is different from the first SSB. Specifically, the time-frequency resources used by the first SSB and the second SSB are different, or the beams used by the first SSB and the second SSB are different, that is, the beam indexes corresponding to the first SSB and the second SSB are different. For example, the first SSB is recorded as SSB 1, the second SSB is recorded as SSB 2, and the beam directions corresponding to SSB 1 and SSB 2 are different. As shown in Figure 4, assuming that there is a terminal device in each SSB direction (for ease of description, UE is taken as an example below), SSB1 corresponds to UE 1, SSB 2 corresponds to UE 2, SSB 3 corresponds to UE 3, and SSB 4 corresponds to UE 4. At this time, the MIB can indicate whether the SIB1 corresponding to at least one SSB from SSB 1 to SSB 2 is sent. For example, the MIB can indicate that the SIB1 corresponding to SSB 1 and SSB 2 is sent, while the SIB1 corresponding to SSB 3 and SSB 4 is not sent. For another example, the MIB can indicate that the SIB1 corresponding to SSB1 to SSB 4 are all sent. In this way, after receiving the first SSB, the terminal device can know whether the SIB1 corresponding to the SSB corresponding to the terminal device is sent, thereby determining the sending status of SIB1. At the same time, it can also enable the network device to only send the SIB1 corresponding to some SSBs, thereby reducing the power consumption of the network device.

[0156] It should be understood that each SSB has an index, and multiple SSBs refer to SSBs corresponding to multiple SSB indexes. Optionally, the starting radio frame of the first time range on the system frame is determined by the number of radio frames occupied by the first time range. Wherein, the starting radio frame number is recorded as S1 (S1 is greater than or equal to 0, S1 is an integer), then S1 satisfies S1 mod M = 0, M is the number of radio frames occupied by the first time range, and M is a positive integer. For example, a radio frame is 10ms, so when M = 16, the size of the first time range is 160ms. At this time, the SFN that satisfies SFN mod M = 0 (that is, S1 that satisfies S1 mod M = 0) can be 0 or 16 or 32, and so on. Therefore, the starting radio frame of the first time range on the system frame is 0 or 16 or 32, and so on. At this time, SFN 0 to SFN 15 is the first time range, SFN 16 to SFN 31 is the first time range, SFN 32 to SFN 47 is the first time range, and so on.

[0157] Furthermore, the radio frame where the first SSB is located may be included in the first time range, that is, the first time range includes the radio frame where the first SSB is located. For example, the radio frame where the first SSB is located is SFN 8, and the system frames occupied by the first time range are SFN 0 to SFN 15. For another example, if the radio frame where the first SSB is located is SFN 17, the system frames occupied by the first time range are SFN 16 to SFN 31. Optionally, the SFN of the starting radio frame may also satisfy SFN mod N = X, where N is the number of radio frames, N is greater than or equal to M, N is a positive integer, and X is an integer less than or equal to N. For example, N = 16, X = 1, that is, the first time range is 160ms. In this case, the SFN that satisfies SFN mod M = 1 may be 1 or 17, and so on. Therefore, the starting radio frame of the first time range on the system frame is 1 or 17, and so on. At this time, SFN 1 to SFN 16 is the first time range, SFN 17 to SFN 32 is the first time range, and so on.

[0158] Optionally, the system frame occupied by the first time range is a system frame occupied by the time period, or the system frame occupied by the first time range is a system frame occupied by one or more time periods after the time period, wherein the system frame occupied by the time period includes the system frame in which the first SSB is located. It should be noted that, in this application, system frame and radio frame can be used interchangeably.

[0159] As an example, the SFN of the starting radio frame of the time period satisfies SFN mod A = 0. The time period occupies A system frames, where A is a positive integer, for example, A = 16. In this case, SFN 0 to SFN 15 can be one time period, SFN 16 to SFN 31 can also be one time period, SFN 32 to SFN 47 can also be one time period, and so on. When the wireless frame where the first SSB is located is SFN 8, the system frames occupied by the time period corresponding to the first SSB are SFN 0 to SFN 15. At this time, the system frames occupied by the first time range may be the system frames occupied by the time period, that is, the system frames occupied by the first time range are SFN 0 to SFN 15. The system frames occupied by the first time range may be the system frames occupied by the first time period after the time period, that is, the system frames occupied by the first time range are SFN 16 to SFN 31; or the system frames occupied by the first time range may be the system frames occupied by the second time period after the time period, that is, the system frames occupied by the first time range are SFN 32 to SFN 47.

[0160] As another example, the SFN of the starting radio frame of the time period satisfies SFN mod A = B, where B is less than or equal to A, and B is an integer greater than or equal to 0. Assuming A = 16 and B = 1, SFN 1 to SFN 16 can be one time period, SFN 17 to SFN 32 can also be one time period, and so on. When the radio frame in which the first SSB is located is SFN 8, the system frames occupied by the time period corresponding to the first SSB are SFN 1 to SFN 16. In this case, the first time range can be the system frames occupied by the time period, that is, the system frames occupied by the first time range are SFN 1 to SFN 16. The first time range can be the system frames occupied by the first time period after the time period, that is, the system frames occupied by the first time range are SFN 17 to SFN 32. Alternatively, the first time range can be the system frames occupied by the second time period after the time period, that is, the system frames occupied by the first time range are SFN 33 to SFN 48. It should be noted that the above-mentioned conditions satisfied by the starting wireless frame and the number of wireless frames are only examples. The conditions satisfied by the starting wireless frame and the number of wireless frames can also be other conditions that can determine the starting wireless frame, and this application does not limit this.

[0161] Optionally, the starting radio frame of the first time range on the system frame is the radio frame where the first SSB is located; or, the starting radio frame of the first time range on the system frame is the radio frame after the radio frame where the first SSB is located, for example, the first radio frame after or the second radio frame after; or, the starting radio frame of the first time range on the system frame is the radio frame before the radio frame where the first SSB is located. That is, the starting radio frame of the first time range may be the same as the radio frame where the first SSB is located, or may be separated from the radio frame where the first SSB is located by at least one radio frame. The starting radio frame of the first time range on the system frame is separated from the radio frame where the first SSB is located by at least one radio frame, which can be understood as follows: in the time domain, the starting radio frame of the first time range is after the SFN where the first SSB is located and is separated by at least one system frame; or, the starting radio frame of the first time range is before the radio frame where the first SSB is located and is separated by at least one system frame. The starting radio frame of the first time range on the system frame is described below with reference to Figures 5 and 6.

[0162] Figure 5 is a schematic diagram of SIB1 transmission provided by an embodiment of the present application. As shown in Figure 5, the white rectangle represents SSB, and the black rectangle represents SIB1. It is assumed that the period of the first SSB is 160ms and the first time range is 160ms, which can be understood as the first time range is the period of the first SSB. In Figure 5, the SIB1 corresponding to the 1st SSB, 2nd SSB, 6th SSB, 7th SSB and 8th SSB is not sent, and the SIB1 corresponding to the 3rd SSB, 4th SSB and 5th SSB is sent. For example, when the 3rd SSB is the first SSB, the starting radio frame of the first time range is the same as the radio frame in which the 3rd SSB is located. At this time, the 3rd SSB is within the first time range. The MIB can indicate that the SIB1 corresponding to the 3rd SSB is sent within the first time range. For another example, when the wireless frame where the first SSB is located is included in the first time range, assuming that the fourth SSB is the first SSB, the first time range may include the wireless frame where the fourth SSB is located. At this time, the fourth SSB is still within the first time range. Therefore, the MIB may indicate that the SIB1 corresponding to the fourth SSB is sent within the first time range.

[0163] FIG6 is another schematic diagram of SIB1 transmission provided by an embodiment of the present application. As shown in FIG6 , the starting radio frame of the first time range and the radio frame where the first SSB is located are separated by at least one SFN as an example for explanation. The white rectangle represents the SSB, and the black rectangle represents the SIB1. The period of the SSB is 20ms, and the time period is 80ms. For example, the starting radio frame of the first time range can start from the radio frame where the 6th SSB is located in FIG6 , that is, the MIB can indicate the transmission status of the SIB1 corresponding to the 6th SSB to the 9th SSB. For example, the network device sends SIB1.

[0164] More specifically, the time period is 80ms, occupying 8 radio frames (for example, when M=8), and the starting radio frame number S2 of the time period satisfies S2 mod M=0, then S2 can be 0, 8, 16, etc. In this case, system frames SFN 0 to SFN 7 are one time period, SFN 8 to SFN 15 are another time period, SFN 16 to SFN 23 are another time period, and so on. The system frame occupied by the first time range corresponding to the first SSB is the system frame occupied by the first time period after the time period including the radio frame where the first SSB is located; alternatively, the system frame occupied by the first time range corresponding to the first SSB may also be the system frame occupied by the second time period or the third time period after the time period including the radio frame where the first SSB is located; alternatively, the system frame occupied by the first time range corresponding to the first SSB may also be the system frame occupied by one or more time periods after the time period including the radio frame where the first SSB is located. For example, according to the time period determined by S2 mod M = 0, as shown in Figure 6, one of the time periods may include the radio frames where the 2nd SSB, the 3rd SSB, the 4th SSB, and the 5th SSB are located, which is called time period A. Another time period in Figure 6 may include the radio frames where the 6th SSB to the 9th SSB are located, which is called time period B. The first SSB is the 2nd SSB in Figure 6, and the time period including the radio frame where the first SSB is located is time period A in Figure 6. The first time period after this time period (i.e., time period A) is time period B, and the system frame occupied by the first time range corresponding to the first SSB may also be the system frame occupied by time period B. At this time, the first time range occupies 8 radio frames, and the starting radio frame number S2 of the first time range also satisfies S2 mod M = 0.

[0165] A special case of the embodiment of the present application is described below with reference to FIG7 .

[0166] FIG7 is another schematic diagram of SIB1 transmission provided by an embodiment of the present application. As shown in FIG7 , assuming that the first time range is 160ms and the SSB period is 80ms, when the first time range is in the period from the 1st to the 2nd SSB, the MIB indicates that SIB1 is not sent. When the first time range is in the period from the 3rd to the 4th SSB, the MIB also indicates that SIB1 is not sent. Since the UE sends UL-WUS to the network device in the 4th SSB period, the network device sends SIB1, and the information included in the MIB at this time cannot change, therefore, in practice, when the first time range is in the transmission period from the 3rd to the 4th SSB, the transmission state of SIB1 is uncertain, but the UE can detect SIB1 in the second half of the first time range (i.e., the last 80ms). At this time, it can be understood that the MIB can only indicate that the SIB1 is sent within the first time range. For example, when the first bit information is 1, it means that the SIB1 is sent within the first time range; when the first bit information is 0, the meaning is undefined, that is, it can be reserved.

[0167] Exemplarily, according to the sending status of SIB1 indicated by the MIB, subsequent steps can be divided into the following two cases.

[0168] Case 1:

[0169] If the MIB indicates that the network device has not sent SIB1, step S221a and step S221b are executed.

[0170] S221a: The terminal device sends a first signal to the network device. Correspondingly, the network device receives the first signal from the terminal device.

[0171] The first signal is used to request the network device to send the SIB1. After receiving the first signal, the network device sends the SIB1 to the terminal device.

[0172] As an example, the first signal is UL-WUS. If the terminal device does not have UL-WUS configuration information, the terminal device can obtain the UL-WUS configuration information; or if the UL-WUS configuration information previously obtained by the terminal device has expired, the terminal device re-acquires the UL-WUS configuration information. For example, the terminal device can obtain the UL-WUS configuration information from other cells, which is not limited in the embodiments of the present application.

[0173] As another example, the first signal is a preamble signal, that is, a physical random access channel (PRACH). Or it can also be understood that preamble or PRACH is UL-WUS. If the terminal device does not have the configuration information of the preamble signal, the terminal device can obtain the configuration information of the preamble signal; or the configuration information of the preamble signal previously obtained by the terminal device has expired, the terminal device re-acquires the configuration information of the preamble signal. For example, the terminal device can obtain the configuration information of the preamble signal from other cells, and the embodiments of the present application are not limited to this.

[0174] S221b: The network device sends a system message block to the terminal device. Correspondingly, the terminal device receives the system message block from the network device.

[0175] For ease of description, the following description is given by taking the system information block SIB1 as an example.

[0176] After receiving SIB1, the terminal device can obtain cell selection information and call information of other system information blocks, which may be SIB 2 to SIB 13. Based on the cell information and call information of other system information blocks, the terminal device can correctly access the cell.

[0177] Optionally, before the network device sends the system message block to the terminal device, that is, before step S221b, the method 200 further includes step S221b'.

[0178] S221b': The network device sends a first response message to the terminal device. Correspondingly, the terminal device receives the first response message from the network device.

[0179] The first response information is used to indicate the sending duration of the SIB1.

[0180] Exemplarily, when the first signal is UL-WUS, the first response information can be used as response information of UL-WUS, for example, downlink control information (DCI). The DCI is used to indicate the transmission duration of SIB1. The cyclic redundancy check (CRC) of the DCI can be SI-RNTI or RA-RNTI scrambled. Specifically, the terminal device detects the SSB to obtain the MIB, determines the CORESET of the PDCCH according to the pdcch-configSIB1 in the MIB, and further determines the PDSCH according to the PDCCH. The SIB1 is carried in the PDSCH, and the time-frequency resources of the PDSCH are scheduled by the above-mentioned DCI.

[0181] Exemplarily, the first response information may also be a PDSCH scheduled by DCI, and the PDSCH carries the identity (ID) of the first signal. For example, when the first signal is UL-WUS, the PDSCH carries the UL-WUS ID; for another example, when the first signal is a preamble signal, the PDSCH carries the preamble ID. In this case, the MAC CE may also be used to indicate the transmission duration of the SIB1.

[0182] Optionally, the starting radio frame of the transmission duration of the SIB1 is the radio frame in which the first response information (for example, DCI or the PDSCH) is located; or the starting radio frame of the transmission duration of the SIB1 is the radio frame after the radio frame in which the first response information is located, for example, the starting radio frame of the transmission duration of the SIB1 is the first radio frame after the radio frame in which the first response information is located, and for another example, the starting radio frame of the transmission duration of the SIB1 is the second radio frame after the radio frame in which the first response information is located. The following describes how the first response information is used to indicate the transmission duration of the SIB1 in conjunction with Figure 8.

[0183] Figure 8 is a schematic diagram of the transmission duration of SIB1 provided in an embodiment of the present application. As shown in Figure 8, UE 1 sends UL-WUS in the cycle of the 4th SSB, and the network device sends a response message #1 to the UL-WUS sent by UE 1, and the response message #1 indicates that the transmission duration of SIB1 is 160ms. At this time, the network device sends SIB1 in the cycle of the 5th SSB to the cycle of the 12th SSB. If within the transmission duration of 160ms, when UE 2 sends UL-WUS in the cycle of the 7th SSB, since the transmission duration of SIB1 indicated by the response message #1 is 160ms, UE 2 can detect SIB1 in the cycle of the 8th SSB to the cycle of the 12th SSB. It can be understood that the response message #2 of the UL-WUS sent by UE 2 can indicate that the transmission duration of SIB1 is 80ms. At this point, the network device does not need to wait for the SIB1 transmission duration to end before retransmitting the UL-WUS sent to UE 2. This ensures that both terminal devices can detect SIB1 within the transmission duration of the first system message block indicated by the first response information. This prevents the network device from retransmitting SIB1 for the UL-WUS sent to UE 2, thereby reducing the power consumption of the network device. At this point, the network device sends response information #2 to UE 2, indicating that the transmission duration of SIB1 is 80ms.

[0184] Case 2:

[0185] If the MIB indicates that SIB1 is to be sent within the first time range, step S222 is executed.

[0186] S222: The network device sends a system message block to the terminal device. Correspondingly, the terminal device receives the system message block from the network device.

[0187] If the MIB indicates that the network device sent SIB1 within the first time range, the terminal device receives SIB1 to obtain cell selection information and call information of other system message blocks, which may be SIB 2 to SIB 13. The terminal device can correctly access the cell based on the cell information and call information of other system message blocks.

[0188] Optionally, the first time range includes L MOs of SS 0, where L is a positive integer. For example, after the terminal device detects the first SSB, it will receive the SIB1 on L MOs of SS 0. That is, the L MOs are after the time unit (for example, the time unit can be a symbol, a time slot, a subframe, or a radio frame) where the first SSB is located.

[0189] SS 0 can be understood as a search space type of type 0, or as having an index of 0. Specifically, SS 0 can be understood as the common search space (CSS) for Type 0 PDCCHs. In other words, SS 0 is also known as the Type 0-PDCCH CSS. SS 0 can be used to transmit the PDCCH, which can schedule the PDSCH carrying SIB1.

[0190] As an example, the L MOs of SS 0 are predefined by the protocol or preconfigured through signaling. In other words, the value of L is predefined by the protocol or preconfigured through signaling.

[0191] As an example, L MOs of SS 0 are configured in the MIB. In other words, the value of L is configured in the MIB.

[0192] As an example, L MOs of SS 0 are configured in the UL-WUS configuration information, that is, the value of L is configured by the UL-WUS configuration information.

[0193] Exemplarily, taking the time unit as a time slot, when the UE detects the SSB, it determines SIB1 based on the SSB and sends SIB1 within the first time range. At this time, SIB1 can be transmitted on L MOs of SS 0. For example, the UE detects the first SSB, assuming that the first SSB is SSB 4, L=4, then the UE can assume that SIB1 will be transmitted on the time slot after the time slot where SSB 4 is located. For example, the time slot where SSB 4 is located is 2, then SIB1 can be transmitted on 4 MOs of time slots 3, 4, 5, and 6. The starting MO of these 4 MOs can be associated with the beam that transmits the first SSB, or the starting MO of these 4 MOs can also be associated with other SSB beams instead of the beam that transmits the first SSB.

[0194] Optionally, the starting MO among the L MOs is associated with the beam of the first SSB. Alternatively, the starting MO among the L MOs is not associated with the beam of the first SSB.

[0195] Exemplarily, the starting MO among the L MOs is the first MO associated with the beam of the first SSB. It can be understood that the first MO among the L MOs is associated with the beam transmitting the first SSB; or, in other words, the first MO among the L MOs is the first MO associated with the first SSB beam after the time unit where the first SSB is located. In other words, the starting MO among the L MOs is the first MO after the time unit where the first SSB is located. It can be associated with the beam of the first SSB or with other SSB beams.

[0196] Figure 9 is a schematic diagram of L MOs of SS 0 provided in an embodiment of the present application. In Figure 9, the MO associated with SSB 4 includes the MO on symbol 0 of time slot 4 and the MO on symbol 0 of time slot 5. The MO on symbol 0 of time slot 3 is associated with other SSBs, and the MO on symbol 0 of time slot 6 is also associated with other SSBs. When the starting MO among the L MOs is the first MO associated with the beam of the first SSB, assuming that the UE detects SSB 4 (i.e., the first SSB), L=4, and the first MO associated with the beam of the first SSB is on symbol 0 of time slot 4, then the four MOs include the MO on symbol 0 of time slot 4 and the MO on symbol 0 of time slot 5 (assuming that the MOs on symbol 0 of time slot 4 and time slot 5 are in wireless frame a, a is a non-negative integer). At the same time, the four MOs also include the MO on symbol 0 of time slot 4 and time slot 5 in wireless frame a+2. That is to say, each of the L MOs needs to be associated with the first SSB. As shown in Figure 9, when the starting MO among the L MOs is the first MO after the time slot where the first SSB is located, assuming that the UE detects SSB 4 (i.e., the first SSB), which is on time slot 2, L=4, then at this time, the first MO among the 4 MOs is the MO on symbol 0 of time slot 3, the second MO among the 4 MOs is the MO on symbol 0 of time slot 4, the third MO among the 4 MOs is the MO on symbol 0 of time slot 5, and the fourth MO among the 4 MOs is the MO on symbol 0 of time slot 6. At this time, it can be understood that each MO among the L MOs can be associated with any SSB.

[0197] Optionally, the starting MO among the L MOs is different from or spaced apart from the time unit where the first SSB is located by a second time range.

[0198] Exemplarily, considering the time for the UE to process the SSB, when the UE detects the first SSB, there is an interval between the starting MO in the L MOs and the time unit in which the first SSB is located, for example, a difference or interval of a second time range. The second time range may be Q time units, where Q is an integer and is predefined by the protocol, for example, Q=1 or 2 or 3.

[0199] Optionally, when the MIB indicates that the SIB1 is sent within a first time range, the first time range includes a first time window, the start time of the first time window is the next time unit after the time unit where the first SSB is located, and the end time of the first time window is the time unit where the first PRACH opportunity associated with the first SSB is located or the time unit before the time unit where the first PRACH opportunity is located, and the first PRACH opportunity is located after the time unit where the first SSB is located.

[0200] Exemplarily, when the UE detects SSB 4, for example, the first SSB, and determines based on the first SSB that the network device sends SIB1 within the first time range, the UE can further determine that the SIB1 is transmitted within the first time window, the start time of the first time window is the time unit where the first SSB is located, and the end time of the first time window is the first PRACH opportunity associated with the first SSB after the time unit where the first SSB is located.

[0201] It should be noted that the PRACH opportunity is used to transmit UL-WUS. For example, if the period of the first SSB is 20ms and the period of the PRACH is 160ms, then the size of the first time window can be 140ms, 120ms, 100ms, ..., 40ms, or 20ms. In this case, within the first time window, the UE can receive SIB1.

[0202] It should also be noted that when the network device does not send SIB1, the terminal device will send UL-WUS. In this way, when the network device sends SIB1, the terminal device can directly receive SIB1 without sending UL-WUS, reducing the power consumption of the network device. If the terminal device determines that the network device has not sent SIB1, it can obtain the configuration information of UL-WUS from other cells as soon as possible, without having to wait until the blind detection finds that SIB1 has not been sent before obtaining the configuration information of UL-WUS. In this way, UL-WUS can be sent faster to request the network device to send SIB1, so that SIB1 can be received as soon as possible and then access the network.

[0203] In one implementation, if the MIB does not indicate the transmission status of SIB1, that is, the MIB does not include bit information that can indicate whether the network device sends the system message block, or the MIB does not include the first bit information, then when the UE detects the first SSB, it can also determine which L MOs of SS 0 the SIB1 is transmitted on in the above manner. The detailed description of the L MOs can be found above and will not be repeated here.

[0204] Optionally, when the MIB indicates that SIB1 is sent within the first time range, the MIB also indicates the sending duration of the SIB1. As shown in Figure 10, no SIB1 is sent during the period from the 1st SSB to the 3rd SSB. Starting from the period of the 4th SSB, the MIB indicates that the SIB1 is sent throughout the sending duration, where the sending duration is less than or equal to the first time range. In this way, according to the MIB, it is possible to know when the network device ends the sending of SIB1, so that the terminal device ends the sending of SIB1 when SIB1 is not needed, which can reduce the power consumption of the network device.

[0205] In an embodiment of the present application, the terminal device determines the transmission status of SIB1 within the first time range through the first synchronization signal block, so that it can determine whether the network device sends SIB1 based on the first SSB, which can avoid blind detection of the terminal device and reduce the power consumption of the terminal device. At the same time, if the terminal device determines that the network device has not sent SIB1, it can obtain the configuration information of UL-WUS from other cells as soon as possible, without waiting until the blind detection finds that SIB1 is not sent before obtaining the configuration information of UL-WUS. In this way, UL-WUS can be sent faster to request the network device to send SIB1, so that SIB1 can be received as soon as possible and then access the network. If the terminal device determines that the network device has sent SIB1, the terminal device does not need to send UL-WUS, but directly receives SIB1. This can avoid the terminal device not blindly detecting first, but first obtaining the configuration information of UL-WUS, and missing the opportunity to receive SIB1, thereby causing the network device to resend SIB1, thereby reducing the power consumption of the network device.

[0206] For example, in an embodiment of the present application, after receiving the first synchronization signal block, the terminal device can directly send a first signal to the network device, requesting the network device to send a system message block through the first signal. After receiving the first signal, the network device sends a first response message to the terminal device, indicating the transmission duration of the system message block through the first response message. Therefore, when multiple terminal devices all need the system message block, the network device can enable the multiple terminal devices to receive the system message block within the transmission duration of the system message block indicated by the first response message, thereby reducing the power consumption of the network device. This implementation is described in detail below in conjunction with method 300 of Figure 11.

[0207] Figure 11 is a schematic flow chart of a method for sending a system message block according to an embodiment of the present application. As shown in Figure 11, the method 300 includes the following steps.

[0208] S310: The network device sends a first synchronization signal block to the terminal device. Correspondingly, the terminal device receives the first synchronization signal block from the network device.

[0209] The terminal device receives the first synchronization signal block to obtain the identifier of the cell where the terminal device is located, and may also obtain the MIB.

[0210] It should be noted that the cell corresponding to the first SSB is an energy-saving cell. For example, the cell corresponding to the first SSB is a cell to which the network device sends SIB1 on demand.

[0211] S320: The terminal device sends a first signal to the network device. Correspondingly, the network device receives the first signal from the terminal device.

[0212] The first signal is used to request the network device to send a system information block (for ease of description, the system information block is SIB1 as an example below). For a detailed description of the first signal, please refer to the above step S221a and will not be repeated here.

[0213] S330: The network device sends first response information to the terminal device. Correspondingly, the terminal device receives the first response information from the network device.

[0214] The first response information is used to indicate the transmission duration of SIB1. It can be understood that the first response information can instruct the network device to periodically transmit SIB1.

[0215] Optionally, the starting radio frame of the SIB1 transmission duration is the radio frame in which the first response information is located; or the starting radio frame of the SIB1 transmission duration is the radio frame after the radio frame in which the first response information is located. For a detailed description of the first response information, please refer to the above step S221b' and will not be repeated here.

[0216] S340: The network device sends a system message block to the terminal device. Correspondingly, the terminal device receives the system message block from the network device.

[0217] Please refer to the above step S221b for detailed description, which will not be repeated here.

[0218] In an embodiment of the present application, the terminal device indicates the transmission duration of SIB1 through the first response information, so that when multiple terminal devices need SIB1, the network device can enable multiple terminal devices to receive SIB1 within the transmission duration of SIB1 indicated by the first response information, thereby reducing the power consumption of the network device.

[0219] Figure 12 is a schematic block diagram of a communication device 1000 provided in an embodiment of the present application. As shown in Figure 12, the device 1000 may include a transceiver unit 1010 and a processing unit 1020. The transceiver unit 1010 can communicate with the outside world, and the processing unit 1020 is used to process data. The transceiver unit 1010 may also be referred to as a communication interface or a transceiver unit. The processing unit 1020 may be used for processing.

[0220] Optionally, the device 1000 may further include a storage unit, which may be used to store instructions and / or data. The processing unit 1020 may read the instructions and / or data in the storage unit so that the device implements the aforementioned method embodiment.

[0221] Exemplarily, the communication device 1000 can be a terminal device, or a communication device applied to a terminal device or used in combination with a terminal device and capable of implementing a method executed by the terminal device, such as a chip, a chip system or a circuit. For details, please refer to the relevant description of the chip system shown in the figure below.

[0222] Exemplarily, the communication device 1000 can be a network device, or a communication device applied to a network device or used in combination with a network device and capable of implementing a method executed by the network device, such as a chip, a chip system or a circuit. For details, please refer to the relevant description of the chip system shown in the figure below.

[0223] In one possible design, the device 1000 can implement steps or processes corresponding to those executed by the terminal device in the above method embodiment, wherein the transceiver unit 1010 is used to execute the transceiver-related operations of the terminal device in the above method embodiment, and the processing unit 1020 is used to execute the processing-related operations of the terminal device in the above method embodiment.

[0224] As an example, the transceiver unit 1010 is used to receive a first synchronization signal block SSB from a network device; the processing unit is used to determine the sending status of the system message block SIB1 within a first time range based on the first SSB, and the first time range is predefined or preconfigured by the protocol.

[0225] As another example, the transceiver unit 1010 is used to receive a first synchronization signal block SSB from a network device; and send a first signal based on the first SSB, which is used to request the network device to send a system message block SIB1; the transceiver unit 1010 is also used to receive a first response message, which is used to indicate the sending duration of the SIB1.

[0226] In another possible design, the device 1000 can implement steps or processes corresponding to those performed by the network device in the above method embodiment, wherein the processing unit 1020 is used to perform processing-related operations of the network device in the above method embodiment, and the transceiver unit 1010 is used to perform transceiver-related operations of the network device in the above method embodiment.

[0227] As an example, the transceiver unit 1010 is used to send a first synchronization signal block SSB, where the first SSB indicates the sending status of the system message block SIB1 within a first time range, where the first time range is predetermined or preconfigured by the protocol.

[0228] As another example, the transceiver unit 1010 is used to receive a first signal, which is used to request the network device to send a system message block SIB1; the transceiver unit 1010 is also used to send a first response message, which is used to indicate the sending duration of the SIB1.

[0229] Optionally, the transceiver unit 1010 is also used to send a first synchronization signal block SSB.

[0230] It should be understood that the device 1000 here is embodied in the form of a functional unit. The term "unit" here may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (such as a shared processor, a dedicated processor or a group processor, etc.) and a memory for executing one or more software or firmware programs, a merging logic circuit and / or other suitable components that support the described functions. In an optional example, those skilled in the art will understand that the device 1000 can be specifically the transmitting end in the above-mentioned embodiment, and can be used to execute the various processes and / or steps corresponding to the transmitting end in the above-mentioned method embodiment, or the device 1000 can be specifically the receiving end in the above-mentioned embodiment, and can be used to execute the various processes and / or steps corresponding to the receiving end in the above-mentioned method embodiment. To avoid repetition, it will not be described here.

[0231] The device 1000 of each of the above-mentioned solutions has the function of implementing the corresponding steps performed by the sending end in the above-mentioned method, or the device 1000 of each of the above-mentioned solutions has the function of implementing the corresponding steps performed by the receiving end in the above-mentioned method. The functions can be implemented by hardware, or the corresponding software can be implemented by hardware. The hardware or software includes one or more modules corresponding to the above-mentioned functions; for example, the transceiver unit can be replaced by a transceiver (for example, the sending unit in the transceiver unit can be replaced by a transmitter, and the receiving unit in the transceiver unit can be replaced by a receiver), and other units, such as the processing unit, can be replaced by a processor to respectively perform the transceiver operations and related processing operations in each method embodiment.

[0232] In addition, the above-mentioned transceiver unit can also be a transceiver circuit (for example, it can include a receiving circuit and a transmitting circuit), and the processing unit can be a processing circuit. In an embodiment of the present application, the above-mentioned communication device can be the receiving end or the transmitting end in the aforementioned embodiment, or it can be a chip or a chip system, such as a system on chip (SoC). Among them, the transceiver unit can be an input and output circuit or a communication interface. The processing unit is a processor or microprocessor or integrated circuit integrated on the chip. This is not limited here.

[0233] Optionally, the chip is a modem chip, also known as a baseband chip, or a SoC chip or a system in package (SIP) chip including a modem core.

[0234] Figure 13 is a schematic block diagram of a communication device 2000 provided in an embodiment of the present application. As shown in Figure 13, the device 2000 includes a processor 2010 and a transceiver 2020. The processor 2010 and the transceiver 2020 communicate with each other via an internal connection path. The processor 2010 is configured to execute instructions to control the transceiver 2020 to transmit and / or receive signals.

[0235] Optionally, the apparatus 2000 may further include a memory 2030, which communicates with the processor 2010 and the transceiver 2020 via an internal connection path. The memory 2030 is used to store instructions, and the processor 2010 may execute the instructions stored in the memory 2030.

[0236] Exemplarily, the communication device 2000 can be a network device, or a communication device applied to a network device or used in combination with a network device and capable of implementing a method for executing a location management function network element, such as a chip, a chip system or a circuit. For details, please refer to the relevant description of the chip system shown in Figure 14.

[0237] Exemplarily, the communication device 2000 can be a terminal device, or a communication device applied to a terminal device or used in combination with a terminal device and capable of implementing a method executed by the terminal device, such as a chip, a chip system or a circuit. For details, please refer to the relevant description of the chip system shown in Figure 14.

[0238] In a possible implementation, the apparatus 2000 is used to implement the various processes and steps corresponding to the network device in the above method embodiment.

[0239] In another possible implementation, the apparatus 2000 is used to implement the various processes and steps corresponding to the terminal device in the above method embodiment.

[0240] Optionally, the memory 2030 may include a read-only memory and a random access memory, and provide instructions and data to the processor. A portion of the memory may also include non-volatile random access memory. For example, the memory may also store device type information. The processor 2010 may be configured to execute instructions stored in the memory. When the processor 2010 executes the instructions stored in the memory, the processor 2010 is configured to perform the various steps and / or processes of the above-described method embodiments corresponding to the transmitting end or the receiving end.

[0241] During implementation, each step of the above method can be completed by an integrated logic circuit of the hardware in the processor or by instructions in the form of software. The steps of the method disclosed in conjunction with the embodiments of the present application can be directly embodied as being executed by a hardware processor, or can be executed by a combination of hardware and software modules in the processor. The software module can be located in a storage medium mature in the art such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in conjunction with its hardware. To avoid repetition, it will not be described in detail here.

[0242] It should be noted that the processor in the embodiments of the present application can be an integrated circuit chip with signal processing capabilities. During implementation, the steps of the above method embodiments can be completed by hardware integrated logic circuits in the processor or software instructions. The above processor can be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, or the above processor can be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), ASICs, field programmable gate arrays (FPGAs) or other programmable logic devices, or partial circuits in other chips for processing functions. The processor in the embodiments of the present application can implement or execute the various methods, steps and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc. The steps of the method disclosed in conjunction with the embodiments of the present application can be directly embodied as being executed by a hardware decoding processor, or can be executed by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium well-known in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, etc. The storage medium is located in the memory, and the processor reads the information in the memory and, in conjunction with its hardware, completes the steps of the above method.

[0243] It is understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), and direct RAM bus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0244] In the embodiments of the present application, the above-described method can be executed by a network device and a terminal device, or can be executed by a chip, chip system, or circuit of the network device and the terminal device, and the chip, chip system, or circuit can be installed in the network device and the terminal device. Below, the chip system in the network device and the terminal device is described in conjunction with Figure 14.

[0245] 14 shows a schematic diagram of a chip system according to an embodiment of the present application. The chip system 3000 (or also referred to as a processing system) includes a logic circuit 3010 and an input / output interface 3020 .

[0246] Logic circuit 3010 may be a processing circuit in chip system 3000. Logic circuit 3010 may be coupled to a storage unit and call instructions in the storage unit, so that chip system 3000 can implement the methods and functions of various embodiments of the present application. Input / output interface 3020 may be an input / output circuit in chip system 3000, outputting information processed by chip system 3000 or inputting data or signaling information to be processed into chip system 3000 for processing.

[0247] As a solution, the chip system 3000 is used to implement the operations performed by a communication device (such as a terminal device or a network device) in the above various method embodiments.

[0248] For example, the logic circuit 3010 is used to implement the processing-related operations performed by the communication device (such as a terminal device or a network device) in the above method embodiments; the input / output interface 3020 is used to implement the sending and / or receiving-related operations performed by the communication device (such as a terminal device or a network device) in the above method embodiments. The present application also provides a processor for coupling with a memory to execute the methods and functions related to the terminal device or network device in any of the above embodiments.

[0249] An embodiment of the present application further provides a computer-readable storage medium on which computer instructions for implementing the methods executed by a network device or a terminal device in the above-mentioned method embodiments are stored.

[0250] An embodiment of the present application also provides a computer program product, comprising instructions, which, when executed by a computer, implement the methods performed by the network device or the terminal device in the above-mentioned method embodiments.

[0251] An embodiment of the present application further provides a communication system, which includes the network device or terminal device apparatus in the above embodiments.

[0252] The explanation of the relevant contents and beneficial effects of any of the above-mentioned devices can be referred to the corresponding method embodiments provided above, which will not be repeated here.

[0253] In order to facilitate understanding of the embodiments of the present application, the following explanations are made.

[0254] 1. Unless otherwise specified, “plurality” means two or more.

[0255] 2. Unless otherwise specified or there is no logical conflict, the terms and / or descriptions between different embodiments of this application are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form new embodiments based on their internal logical relationships.

[0256] 3. The various numerical numbers involved in this application are only used for the convenience of description and are not used to limit the scope of protection of this application. The size of the serial numbers involved in this application does not mean the order of execution. The order of execution of each process should be determined by its function and internal logic. For example, the terms "first", "second", "third", "fourth" and other various terminology labels (if any) in the specification and claims and drawings of this application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. Among them, the data used in this way can be interchangeable where appropriate, so that the embodiments described here can be implemented in an order other than what is illustrated or described here.

[0257] At the same time, any embodiment or design described in this application as "exemplary" or "for example" should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner to facilitate understanding.

[0258] 4. The terms "comprise" and "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product or apparatus.

[0259] 5. In this application, "used to indicate" can be understood as "enabling," and "enabling" can include direct enabling and indirect enabling. When describing that certain information is used to enable A, it can include that the information directly enables A or indirectly enables A, and does not necessarily mean that the information contains A.

[0260] The information enabled by the information is called information to be enabled. In the specific implementation process, there are many ways to enable the enabled information, such as but not limited to, directly enabling the information to be enabled, such as the information to be enabled itself or the index of the information to be enabled. The information to be enabled can also be indirectly enabled by enabling other information, wherein there is an association between the other information and the information to be enabled. It is also possible to enable only a part of the information to be enabled, while the other parts of the information to be enabled are known or agreed in advance. For example, it is also possible to enable specific information with the help of the arrangement order of each piece of information agreed in advance (such as specified in the protocol), thereby reducing the enabling overhead to a certain extent. At the same time, it is also possible to identify the common parts of each piece of information and enable them uniformly to reduce the enabling overhead caused by enabling the same information separately.

[0261] 6. In this application, "pre-configuration" may include pre-definition, such as protocol definition. "Pre-definition" may be implemented by pre-storing corresponding codes, tables, or other methods that can be used to indicate relevant information in a device (e.g., including each network element). This application does not limit the specific implementation method.

[0262] 7. "Storage" or "saving" as used in this application may refer to storage in one or more memories. The one or more memories may be provided separately or integrated into an encoder or decoder, a processor, or a communication device. The one or more memories may also be provided in part separately and in part integrated into a decoder, processor, or communication device. The type of memory may be any form of storage medium and is not limited thereto.

[0263] 8. The arrows or boxes indicated by dotted lines in the schematic diagrams in the accompanying drawings of this application specification represent optional steps or optional modules.

[0264] 9. Unless otherwise specified, “ / ” indicates that the objects associated with each other are in an “or” relationship. For example, A / B can mean A or B. “And / or” in this application is only a description of the association relationship between the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. A and B can be singular or plural.

[0265] Those skilled in the art will appreciate that the units and algorithm steps of each example 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 performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel 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.

[0266] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0267] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0268] The units described as separate components may or may not be physically separate, and 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 these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0269] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0270] If the functions are implemented in the form of 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 the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

Claims

1. A method for sending a system message block, characterized in that: include: receiving a first synchronization signal block SSB from a network device; The sending status of the system message block SIB1 within a first time range is determined based on the first SSB, where the first time range is predetermined or preconfigured by the protocol.

2. The method according to claim 1, characterized in that include: The master information block MIB in the first SSB indicates the transmission status of the SIB1 within the first time range.

3. The method according to claim 2, characterized in that The MIB also indicates the transmission status of SIB1 corresponding to the second SSB, and the second SSB is different from the first SSB.

4. The method according to any one of claims 1 to 3, characterized in that The starting radio frame of the first time range on the system frame is determined by the number of radio frames occupied by the first time range.

5. The method according to claim 4, characterized in that The SFN of the starting radio frame and the number of radio frames satisfy: SFN mod M = 0, Wherein, M is the number of the wireless frames, and M is a positive integer.

6. The method according to any one of claims 1 to 3, characterized in that The starting radio frame of the first time range on the system frame is the radio frame where the first SSB is located; or, The starting wireless frame of the first time range on the system frame is the wireless frame after the wireless frame where the first SSB is located.

7. The method according to claim 2 or 3, characterized in that When the MIB indicates that the SIB1 is sent within the first time range, the first time range includes L monitoring opportunities MO of the search space SS 0, where L is a positive integer.

8. The method according to any one of claims 2 to 6, characterized in that When the MIB indicates that the SIB1 is not sent, the method further includes: Sending a first signal, where the first signal is used to request the network device to send the SIB1; Receive the SIB1.

9. A method for sending a system message block, executed by a communication device, characterized in that: include: A first synchronization signal block SSB is sent, where the first SSB indicates the sending status of the system message block SIB1 within a first time range, where the first time range is predetermined or preconfigured by the protocol.

10. The method according to claim 9, characterized in that The master information block MIB in the first SSB indicates the transmission status of the SIB1 within the first time range.

11. The method according to claim 10, characterized in that The MIB also indicates the transmission status of SIB1 corresponding to the second SSB, and the second SSB is different from the first SSB.

12. The method according to any one of claims 9 to 11, characterized in that The starting radio frame of the first time range on the system frame is determined by the number of radio frames occupied by the first time range.

13. The method according to claim 12, characterized in that The SFN of the starting radio frame and the number of radio frames satisfy: SFN mod M = 0, Wherein, M is the number of the wireless frames, and M is a positive integer.

14. The method according to any one of claims 9 to 13, characterized in that The starting radio frame of the first time range on the system frame is the radio frame where the first SSB is located; or, The starting wireless frame of the first time range on the system frame is the wireless frame after the wireless frame where the first SSB is located.

15. The method according to claim 10 or 11, characterized in that When the MIB indicates that the SIB1 is sent within the first time range, the first time range includes L monitoring opportunities MO of the search space SS 0, where L is a positive integer.

16. The method according to any one of claims 10 to 14, characterized in that When the MIB indicates that the SIB1 is not sent, the method further includes: receiving a first signal, where the first signal is used to request the communication device to send the SIB1; The SIB1 is sent.

17. A communication device, characterized in that: include: A processor configured to execute a computer program or instruction to cause the apparatus to perform the method according to any one of claims 1 to 8, or to cause the apparatus to perform the method according to any one of claims 9 to 16.

18. A communication system, characterized in that: include: A terminal device and a network device, wherein the terminal device is used to execute the method according to any one of claims 1 to 8, and the network device is used to execute the method according to any one of claims 9 to 16.

19. A computer-readable storage medium, characterized in that include: The computer-readable storage medium stores computer program instructions, which, when executed on a communication device, cause the communication device to execute the method according to any one of claims 1 to 8, or cause the communication device to execute the method according to any one of claims 9 to 16.

20. A computer program product, characterized in that When the computer program product is run on a communication device, the communication device is caused to perform the method according to any one of claims 1 to 16.

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