System information transmission method and apparatus, terminal, and network side device

Abstract

The present application relates to the technical field of communications, and discloses a system information transmission method and apparatus, a terminal, and a network side device. The system information transmission method of embodiments of the present application comprises: a terminal receiving first system information on a first downlink carrier, the first downlink carrier being a downlink carrier among a plurality of downlink carriers of a cell, and the first system information being at least part of system information of the cell.

Description

System information transmission method and apparatus, terminal, and network-side device

[0001] Cross-reference to Related Applications

[0002] This application claims priority to Chinese Patent Application No. 202411058911.X, filed on August 2, 2024, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0003] The present application belongs to the field of communication technology, and specifically relates to a system information transmission method, device, terminal and network-side device. BACKGROUND

[0004] In related technologies, only a system information transmission method supporting one cell containing one downlink carrier is provided, i.e., in related technologies, the system information transmission is only suitable for a scenario in which one cell has only one downlink carrier, which leads to poor flexibility of the system information transmission. SUMMARY

[0005] Embodiments of the present application provide a system information transmission method, device, terminal and network-side device, which can solve the problem of poor flexibility of the system information transmission.

[0006] In a first aspect, a system information transmission method is provided, comprising:

[0007] The terminal receives first system information on a first downlink carrier, the first downlink carrier being a downlink carrier in a plurality of downlink carriers of a cell, and the first system information being at least part of system information of the cell.

[0008] In a second aspect, a system information transmission method is provided, comprising:

[0009] The network-side device transmits first system information on a first downlink carrier, the first downlink carrier being a downlink carrier in a plurality of downlink carriers of a cell, and the first system information being at least part of system information of the cell.

[0010] In a third aspect, a system information transmission device is provided, comprising:

[0011] The receiving module is configured to receive first system information on a first downlink carrier, the first downlink carrier being a downlink carrier in a plurality of downlink carriers of a cell, and the first system information being at least part of system information of the cell.

[0012] In a fourth aspect, a system information transmission device is provided, comprising:

[0013] The sending module is configured to send first system information on a first downlink carrier, the first downlink carrier being a downlink carrier in a plurality of downlink carriers of a cell, and the first system information being at least part of system information of the cell.

[0014] In a fifth aspect, a system information transmission apparatus is provided, which is configured to perform the steps of the system information transmission method at the terminal side as provided in the embodiments of the present application.

[0015] In a sixth aspect, a system information transmission apparatus is provided, which is configured to perform the steps of the system information transmission method of the network side device as provided in the embodiments of the present application.

[0016] In a seventh aspect, a terminal is provided, which comprises a processor and a memory, the memory storing programs or instructions executable on the processor, and the programs or instructions, when executed by the processor, implement the steps of the system information transmission method at the terminal side as provided in the embodiments of the present application.

[0017] In an eighth aspect, a terminal is provided, which comprises a processor and a communication interface, wherein the communication interface is configured to receive first system information on a first downlink carrier, the first downlink carrier being a downlink carrier in a plurality of downlink carriers of a cell, and the first system information being at least part of system information of the cell.

[0018] In a ninth aspect, a network side device is provided, which comprises a processor and a memory, the memory storing programs or instructions executable on the processor, and the programs or instructions, when executed by the processor, implement the steps of the system information transmission method of the network side device as provided in the embodiments of the present application.

[0019] In a tenth aspect, a network side device is provided, which comprises a processor and a communication interface, wherein the communication interface is configured to send first system information on a first downlink carrier, the first downlink carrier being a downlink carrier in a plurality of downlink carriers of a cell, and the first system information being at least part of system information of the cell.

[0020] In an eleventh aspect, a readable storage medium is provided, which stores programs or instructions, and the programs or instructions, when executed by a processor, implement the steps of the system information transmission method at the terminal side as provided in the embodiments of the present application, or implement the steps of the system information transmission method of the network side device as provided in the embodiments of the present application.

[0021] In a twelfth aspect, a wireless communication system is provided, which includes a terminal and a network side device. The terminal is configured to perform the steps of the system information transmission method at the terminal side provided in the embodiments of the present application. The network side device is configured to perform the steps of the system information transmission method at the network side device provided in the embodiments of the present application.

[0022] In a thirteenth aspect, a chip is provided, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is configured to run programs or instructions, so as to implement the system information transmission method at the terminal side provided in the embodiments of the present application, or implement the system information transmission method at the network side device provided in the embodiments of the present application.

[0023] In a fourteenth aspect, a computer program / program product is provided, which is stored in a storage medium. The computer program / program product is executed by at least one processor to implement the steps of the system information transmission method at the terminal side provided in the embodiments of the present application, or implement the steps of the system information transmission method at the network side device provided in the embodiments of the present application.

[0024] In the embodiments of the present application, the terminal receives first system information on a first downlink carrier. The first downlink carrier is a downlink carrier in a plurality of downlink carriers of a cell, and the first system information is at least part of system information of the cell. Since the first downlink carrier is a downlink carrier in a plurality of downlink carriers of a cell, and the first system information is at least part of system information of the cell, the terminal can receive system information in a cell including a plurality of downlink carriers, so as to support flexible transmission of system information, and further improve the flexibility of system information transmission. BRIEF DESCRIPTION OF DRAWINGS

[0025] FIG. 1 is a schematic diagram of a system provided in the embodiments of the present application;

[0026] FIG. 2 is a schematic diagram of system information update provided in the embodiments of the present application;

[0027] FIG. 3 is a schematic diagram of a multi-carrier cell provided in the embodiments of the present application;

[0028] FIG. 4 is a schematic diagram of another multi-carrier cell provided in the embodiments of the present application;

[0029] FIG. 5 is a flowchart of a system information transmission method provided in the embodiments of the present application;

[0030] FIG. 6 is a schematic diagram of another system information update provided in the embodiments of the present application;

[0031] FIG. 7 is a flowchart of another system information transmission method provided in the embodiments of the present application;

[0032] FIG. 8 is a structural diagram of a system information transmission apparatus provided by an embodiment of the present application;

[0033] FIG. 9 is a structural diagram of another system information transmission apparatus provided by an embodiment of the present application;

[0034] FIG. 10 is a structural diagram of a communication device provided by an embodiment of the present application;

[0035] FIG. 11 is a structural diagram of a terminal provided by an embodiment of the present application;

[0036] FIG. 12 is a structural diagram of a network side device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0038] The terms "first", "second", and the like in the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than that illustrated or described herein, and the objects distinguished by "first", "second" are usually a category and do not limit the number of objects, for example, the first object can be one or more. In addition, "or" in the present application means at least one of the connected objects. For example, the protection scope of "A or B" at least covers three schemes, namely, scheme one: including A and not including B; scheme two: including B and not including A; scheme three: including A and B. In addition, the terms "A and / or B", "at least one of A and B", "at least one of A or B" also at least cover the above three schemes, respectively. The character " / " generally represents that the objects before and after are in an "or" relationship.

[0039] The term "indication" in the present application can be a direct indication (or explicit indication) or an indirect indication (or implicit indication). The direct indication can be understood as that the sender explicitly informs the receiver of the specific information, the operation to be performed or the request result, etc. in the indication sent by the sender. The indirect indication can be understood as that the receiver determines the corresponding information according to the indication sent by the sender, or judges and determines the operation to be performed or the request result, etc. according to the judgment result.

[0040] It is worth noting that the technology described in the embodiments of the present application is not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA) or other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used in the above-mentioned systems and radio technologies, as well as in other systems and radio technologies. The following description describes a New Radio (NR) system for the purpose of example, and NR terminology is used in most of the following description, but these technologies can also be applied to systems other than NR systems, such as 6th Generation (6G) communication systems.

[0041] FIG. 1 shows a block diagram of a wireless communication system to which embodiments of the present application can be applied. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 can be a terminal-side device such as a mobile phone, a Tablet Personal Computer, a Laptop Computer, a notebook computer, a Personal Digital Assistant (PDA), a palm computer, a netbook, an Ultra-mobile Personal Computer (UMPC), a Mobile Internet Device (MID), an Augmented Reality (AR) device, a Virtual Reality (VR) device, a robot, a wearable device, a flight vehicle, a Vehicle User Equipment (VUE), a shipboard device, a Pedestrian User Equipment (PUE), a smart home (a home device with a wireless communication function such as a refrigerator, a television, a washing machine, or furniture), a game console, a Personal Computer (PC), a kiosk, or a self-service machine. The wearable device includes a smart watch, a smart bracelet, a smart earphone, smart glasses, smart jewelry (a smart bracelet, a smart necklace, a smart ring, a smart necklace, a smart anklet, a smart necklace, etc.), a smart wristband, smart clothing, etc. The vehicle-mounted device can also be referred to as a vehicle-mounted terminal, a vehicle-mounted controller, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip, or a vehicle-mounted unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present application. The network-side device 12 can include an access network device or a core network device. The access network device can also be referred to as a Radio Access Network (RAN) device, a radio access network function, a radio access network unit, or a satellite. The access network device can include a base station, a Wireless Local Area Network (WLAN) Access Point (AP), or a Wireless Fidelity (WiFi) node, etc.The base station can be referred to as a Node B (NB), an evolved Node B (eNB), a next generation Node B (gNB), a New Radio Node B (NR Node B), an access point, a relay station (RBS), a serving base station (SBS), a base transceiver station (BTS), a radio base station, a radio transceiver, a basic service set (BSS), an extended service set (ESS), a home Node B (HNB), a home evolved Node B, a transmit / receive point (TRP), or some other suitable terminology in the art, and is not limited to a particular technical terminology, provided that the same technical effect is achieved. It should be noted that in the embodiments of the present application, only the base station in the NR system is taken as an example for introduction, and the specific type of the base station is not limited.

[0042] The core network device can also be referred to as a core network node, a core network function, or a core network network element, etc., which includes but is not limited to at least one of the following: a mobility management entity (MME), an access and mobility management function (AMF), a session management function (SMF), a user plane function (UPF), a policy control function (PCF), a policy and charging rules function (PCRF), an edge application server discovery function (EASDF), a unified data management (UDM), a unified data repository (UDR), a home subscriber server (HSS), a centralized network configuration (CNC), a network repository function (NRF), a network exposure function (NEF), a local NEF (L-NEF), a binding support function (BSF), an application function (AF), a location management function (LMF), a gateway mobile location center (GMLC), a network data analytics function (NWDAF), etc. It should be noted that only the core network device in the NR system is taken as an example for introduction in the embodiments of the present application, and the specific type of the core network device is not limited. If the name of the core network device mentioned in the embodiments of the present application changes in the subsequent protocol version (for example, 6G), it is also within the protection scope of the present application.

[0043] Optionally, the core network device can be implemented by one or more function modules in one device, or can be implemented by multiple devices together, and the embodiments of the present application do not make a specific limitation in this regard. It can be understood that the above function modules can be network elements in a hardware device, can be software function modules running on a dedicated hardware, or can be virtualized function modules instantiated on a platform (for example, a cloud platform).

[0044] In some communication systems (such as 5G), system information includes Minimum System Information (MSI) and Other System Information (OSI). The MSI includes Master Information Block (MIB) and Remaining Minimum System Information (RMSI), and the RMSI includes System Information Block (SIB) 1.

[0045] The OSI includes other system information in addition to the Minimum System Information (MSI).

[0046] In some embodiments, the brief introduction of the above system information is as follows:

[0047] MIB: includes System Frame Number (SFN), scheduling configuration of SIB1, cell permission information (bar), same-frequency cell reselection permission indication;

[0048] SIB1: includes cell selection information, Public Land Mobile Network (PLMN) list, cell identifier, tracking area code, RAN area code, cell reservation indication, scheduling information of system information, configuration related to random access, Synchronization Signal Block (SSB) transmission configuration, Time Division Duplex (TDD) uplink configuration, etc.

[0049] SIB2: includes cell reselection configuration;

[0050] SIB3: includes same-frequency neighboring cell information, including cell reselection parameters;

[0051] SIB4: includes neighboring cell information on other frequencies different from the frequency of the serving cell and cell information of other radio access technologies, and related cell reselection parameters;

[0052] SIB5: includes LTE carrier frequency and cell information, and related cell reselection parameters;

[0053] SIB6 and SIB7: earthquake related notification information;

[0054] SIB8: commercial mobile warning information;

[0055] SIB9: wireless system clock information, based on Coordinated Universal Time (UTC) time indication;

[0056] In addition, there are other system information introduced for different purposes, including SIB10 to SIB25, the specific introduction of which is omitted here.

[0057] In some embodiments, the transmission of system information can be as follows:

[0058] System information is transmitted by broadcast, and the terminal needs to receive at least part of the system information, including MIB and SIB1, before accessing the cell, to determine the system parameters related to the execution of random access, including random access resources, uplink and downlink initial bandwidth part (Initial Band Width Part) configuration, etc. The MIB and SIB1 of a cell are always broadcasted, and other system information (OSI) can be always broadcasted or transmitted on demand.

[0059] In SIB1, there is scheduling information (SI_Scheduling Information) related to the transmission of other system information, which is used to configure the parameters for the terminal to receive other system information, including the period, packet configuration, indication of whether it is being broadcasted, transmission window length, and on-demand transmission related configuration of each SIB in the other system information.

[0060] In some embodiments, the terminal performs the reception of the other system information according to the scheduling information related to the transmission of the other system information. If the terminal determines that it wants a piece of system information in the list of scheduling information of the system information but is not broadcasted, the terminal can send a system information request to the base station according to the system information request configuration provided in the scheduling information of the system information. In some embodiments, the base station can be requested to transmit the system information through the physical random access channel (PRACH) (i.e., Msg1) resource or information 3 (Msg3) in the random access process dedicated to the system information request. When the terminal sends the system information request through the PRACH, the base station sends a response signal, random access response (RAR), to the terminal to inform the terminal that the system information request has been received. When the terminal sends the system information request to the base station through the Msg3, the base station sends the Msg4 to the terminal to reply to the terminal. After the terminal successfully sends the system information request, it monitors and receives the system information transmitted by the base station. In order to save system resources, the network side device can configure the terminal to indicate that it wants one or more pieces of system information in the other system information through the PRACH or the Msg3, and the base station transmits the one or more pieces of system information wanted by the terminal according to the request of the terminal.

[0061] In some embodiments, when a cell has a system information update requirement, it needs to be performed according to the period of system information update. When a cell has system information to be updated, as shown in FIG. 2, the base station can send a system information update notification to the terminal in the current system information update period, and broadcast the new system information in the next system information update period; the system information notification is broadcasted through the paging information, and the base station can send the system information update notification multiple times so that all terminals camping in the cell can receive the notification. When the terminal receives the system information update notification in the current system information update period, it receives the new system information in the next system information update period.

[0062] It should be noted that the above system information is mainly described by taking 5G system information as an example, and the type and content of the system information are not limited in the embodiments of the present application, for example: it can be system information in 6G, 7G.

[0063] In the embodiments of the present application, the multi-downlink carrier cell refers to a cell including multiple downlink carriers and one or more uplink carriers. FIG. 3 and FIG. 4 show two multi-downlink carrier cells.

[0064] Fig. 3 shows a heterogeneous cell model including a low frequency downlink carrier and a high frequency downlink carrier. The low frequency downlink carrier can provide macro coverage and be used for transmission of control plane information, and the high frequency downlink carrier can provide multi-point small range coverage and be used for providing high rate data transmission. In order to share the small data transmission function of various intelligent applications, the high frequency downlink carrier can also provide camping and radio access services, so that the terminal can perform data transmission on the high frequency downlink carrier immediately after establishing a radio connection. This deployment mode can effectively utilize the high speed data transmission capability of the high frequency carrier while ensuring continuous control plane.

[0065] Fig. 4 shows a homogeneous cell including multiple downlink carriers, i.e., the multiple downlink carriers have approximately the same coverage range.

[0066] The multi-downlink carrier cell is conducive to network energy management and terminal energy management. The network can turn off the downlink carrier of some sites when the traffic is small, and the terminal can remain camping in the same cell without reselecting to another cell and receiving the system information of another cell. In addition, the multi-downlink carrier cell is conducive to the rapid configuration of the base station to use the multi-downlink carrier for data transmission by the terminal, thereby shortening the service data transmission delay.

[0067] The system information transmission method, device, terminal and network side device provided by the embodiments of the present application will be described in detail in combination with the accompanying drawings and some embodiments and application scenarios.

[0068] Please refer to Fig. 5, which is a flowchart of a system information transmission method according to an embodiment of the present application. As shown in Fig. 5, the method includes the following steps:

[0069] Step 501: The terminal receives first system information on a first downlink carrier, the first downlink carrier being a downlink carrier of multiple downlink carriers of a cell, and the first system information being at least part of system information of the cell.

[0070] The above-mentioned cell is a multi-downlink carrier cell, which includes multiple downlink carriers and one or more uplink carriers, such as the cell shown in Fig. 3 or Fig. 4.

[0071] In the embodiments of the present application, the downlink carrier can be a Time Division Duplex (TDD) carrier or a Frequency Division Duplex (FDD) downlink carrier configured with downlink resources (such as downlink time slot / symbol resources).

[0072] The first downlink carrier can be one of the multiple downlink carriers, or in some embodiments, the first downlink carrier can also be two or more downlink carriers.

[0073] The first system information being at least part of the system information of the cell can mean that the first system information can be part of the system information of the cell, or all of the system information of the cell, to achieve flexible transmission of system information on the first downlink carrier.

[0074] In the case where the first system information is part of the system information of the cell, the system information of the cell can be transmitted through multiple downlink carriers, that is, the transmission of cell system information is shared among multiple downlink carriers, to achieve more flexible transmission of cell system information. In addition, it can also avoid transmitting all system information of the cell on multiple downlink carriers, which will cause the problem of large increase in wireless resource overhead of system information transmission and energy consumption of network side equipment due to repeated transmission of system information, to achieve the effect of saving wireless resources and network side equipment power consumption.

[0075] In some embodiments, the first system information can be the system information before updating.

[0076] In some embodiments, the first system information can be updated system information, to achieve updating of cell system information.

[0077] In some embodiments, the first system information can be actively transmitted by the network side equipment.

[0078] In some embodiments, the first system information can be transmitted on demand, to achieve on-demand transmission of cell system information.

[0079] The part of the system information can be part of the system information in MIB and SIB1-SIB25.

[0080] It should be noted that the embodiments of the present application mainly take SIB numbers in the 5G system as examples for illustration, and the system information transmission method in the embodiments of the present application can be applied to 5G, 6G, 7G, etc. system. In the embodiments of the present application, MIB and SIB1-SIB25 are mainly used for illustration, and any recombination and renumbering of the contents of the above MIB and SIB1-SIB25 to form at least one piece of system information, or combination of at least part of the contents of MIB and SIB1-SIB25 with new contents added later to form at least one piece of system information.

[0081] In the embodiments of the present application, the system information can also be referred to as system message.

[0082] In the embodiments of the present application, since the first downlink carrier is one of the multiple downlink carriers of the cell and the first system information is at least part of the system information of the cell, the terminal can receive the system information in the cell including the multiple downlink carriers, thereby supporting flexible transmission of the system information and improving flexibility of the system information transmission. For example, in some scenarios, the multiple downlink carriers of the cell can transmit part of the system information respectively, or in some scenarios, all the system information can be transmitted in one downlink carrier and part of the system information can be transmitted or not transmitted in the remaining downlink carriers.

[0083] As an optional implementation, the first system information includes at least one of the following:

[0084] at least part of parameters dedicated to the first downlink carrier;

[0085] at least part of minimum system information (MSI) corresponding to the first downlink carrier;

[0086] part of the MSI that can be used in a second downlink carrier of the multiple downlink carriers;

[0087] information of other carriers of the multiple downlink carriers;

[0088] transmission information of first other system information (OSI);

[0089] second OSI.

[0090] In the above, the at least part of parameters dedicated to the first downlink carrier can be understood as that at least part of the parameters dedicated to the first downlink carrier is transmitted in the first downlink carrier, for example, the first downlink carrier transmits all or part of the parameters dedicated to the first downlink carrier, and in the case of transmitting part of the parameters, the other part of the parameters is transmitted in other downlink carriers.

[0091] In some embodiments, the at least part of parameters dedicated to the first downlink carrier can be at least part of parameters of at least part of the system information dedicated to the first downlink carrier, for example, the system information dedicated to the first downlink carrier includes three system informations, and part or all of the parameters of all or part of the three system informations are transmitted in the first downlink carrier, and the remaining parameters can be transmitted in other downlink carriers.

[0092] Since the at least part of parameters dedicated to the first downlink carrier can support flexibility of the parameters dedicated to the first downlink carrier, the flexibility of the system information transmission is improved.

[0093] In some embodiments, the at least part of parameters includes at least one of the following:

[0094] The air interface time information, the indication information of whether to limit access based on the first downlink carrier, at least part of the configuration parameter, the uplink and downlink initial bandwidth part (BWP) configuration corresponding to the first downlink carrier, the random access configuration corresponding to the first downlink carrier, the downlink transmission power parameter corresponding to the first downlink carrier, the common search space configuration corresponding to the first downlink carrier, and the uplink and downlink time domain resource configuration corresponding to the first downlink carrier; wherein the configuration parameter is a configuration parameter for receiving at least part of SIB1 on the first downlink carrier.

[0095] The air interface time information can be SFN, time slot number, symbol number, etc.

[0096] The access based on the first downlink carrier can include at least one of the following:

[0097] Cell barred per carrier;

[0098] Cell reserved for operator use per carrier;

[0099] Cell reserved for other use per carrier;

[0100] Cell reserved for future use per carrier.

[0101] In some embodiments, the restriction can be barring.

[0102] The configuration parameter is a configuration parameter for receiving SIB1 or part of SIB1 on the first downlink carrier.

[0103] The uplink and downlink time domain resource configuration can be uplink and downlink time slot or symbol time domain resource configuration.

[0104] In this embodiment, the flexibility of the at least one parameter can be realized.

[0105] The at least part of MSI corresponding to the first downlink carrier can be understood as that all or part of MSI corresponding to the first downlink carrier is transmitted on the first downlink carrier, so as to improve the flexibility of MSI transmission.

[0106] The partial MSI available for the second downlink carrier can be transmitted on the first downlink carrier, so as to reduce the MSI transmission load of the second downlink carrier.

[0107] The information of the other carriers in the plurality of downlink carriers can be all or part of the downlink carriers other than the first downlink carrier. The information can enable the terminal to acquire the information of the other downlink carriers, so that the terminal receives information on the other downlink carriers, and improves the receiving performance of the terminal.

[0108] The first OSI is not transmitted on the first downlink carrier, and is at least part of system information in SIB2, SIB3, SIB4, …, SIB25.

[0109] The information of the first OSI can enable the terminal to receive the first OSI on the other downlink carriers when the first OSI is needed, so as to realize the flexibility of the OSI and reduce the load cost of the first downlink carrier.

[0110] In some embodiments, the transmission information of the first OSI includes at least one of the following:

[0111] The information of the downlink carrier for transmitting the first OSI, the scheduling configuration information of the first OSI, and the system information request configuration of the first OSI.

[0112] The information of the downlink carrier for transmitting the first OSI can enable the terminal to receive the first OSI on the downlink carrier based on the information.

[0113] The scheduling configuration information of the first OSI can enable the terminal to receive the first OSI based on the information.

[0114] The system information request configuration of the first OSI can enable the terminal to request the network side device to transmit the first OSI based on the configuration.

[0115] The second OSI can include at least part of system information in SIB2, SIB3, SIB4, …, SIB25.

[0116] As an optional embodiment, the method further includes at least one of the following:

[0117] In a case where the first system information includes the partial MSI corresponding to the first downlink carrier, the terminal receives another part of the MSI available for the first downlink carrier on a third downlink carrier, the system information transmitted on the third downlink carrier includes the other part of the MSI, and the third downlink carrier is a downlink carrier in the plurality of downlink carriers of the cell.

[0118] In a case where the information of the downlink carrier of the first OSI indicates that the downlink carrier for transmitting the first OSI is different from the serving carrier of the terminal, the terminal switches to the downlink carrier for transmitting the first OSI to receive the first OSI.

[0119] In this embodiment, the MSI corresponding to the first downlink carrier can be transmitted through the first downlink carrier and the third downlink carrier, so that the load of the first downlink carrier can be reduced.

[0120] In addition, the terminal can switch to the downlink carrier to receive the first OSI, so that the system information receiving performance of the terminal can be improved.

[0121] As an optional embodiment, the terminal receives the first system information on the first downlink carrier, and the method comprises the following steps.

[0122] In a case where the terminal determines that the target system information is transmitted on the first downlink carrier according to the received second system information, the terminal switches to the first downlink carrier to receive the first system information, and the first system information comprises the target system information.

[0123] The target system information is the system information that the terminal wants to receive.

[0124] The received second system information is the system information received by the terminal before step 501 is performed. For example, the received system information comprises the transmission information of the target system information, such as the information of the first downlink carrier for transmitting the target system information.

[0125] In this embodiment, the terminal can switch to the first downlink carrier to receive the first system information, so that the system information receiving performance of the terminal can be improved.

[0126] Optionally, the terminal switches to the first downlink carrier to receive the first system information, and the method comprises the following steps.

[0127] The terminal switches to the first downlink carrier to receive the first system information and the paging information, and the first downlink carrier becomes the serving downlink carrier of the terminal; or

[0128] The terminal switches to the first downlink carrier to receive the first system information, and detects the paging information, and the serving downlink carrier of the terminal is the downlink carrier for receiving the second system information.

[0129] In this embodiment, two switching modes are supported, one of which is to switch to the serving downlink carrier, and the other of which is to switch without changing the serving downlink carrier.

[0130] In addition, since the paging message is received or detected on the first downlink carrier, the problem of the terminal being unable to monitor broadcast information sent on the service message when the terminal receives the target system message on the non-service downlink carrier due to the capability limitation of the terminal can be avoided, thereby improving the paging message receiving performance of the terminal. For example, if the terminal misses the reception of the paging information on the service downlink carrier during the reception of the target system message on the non-service downlink carrier, and does not monitor the paging information on the non-service downlink carrier, the paging information will be missed during the reception of the target system message by the terminal, the paging information cannot be received in time and random access cannot be initiated based on the received paging information, and the base station will expand the paging range, thereby increasing the network energy consumption.

[0131] As an optional implementation, the method further comprises:

[0132] The terminal receives a system information update notification, and the system information update notification is used to notify that the first system information is received on the first downlink carrier, and the first system information is updated system information.

[0133] The system information update notification can be a system information update notification sent by the terminal on the first downlink carrier or another downlink carrier. For example, the network side device sends the system information update notification on each downlink carrier that provides a camping service in a plurality of downlink carriers.

[0134] In this implementation, the terminal can receive the first system information based on the system information update notification, so that the terminal can update the first system information in time. For example, as shown in FIG. 6, the terminal receives the system information update notification and switches to the first downlink carrier to receive the first system information. In some implementations, the system information update notification can be received on the first downlink carrier, and no switching is needed.

[0135] In some implementations, the system information update notification includes information of the first downlink carrier.

[0136] The information of the first downlink carrier can enable the terminal to receive the updated system information on the first downlink carrier, and can support downlink carrier change before and after the system information update, thereby supporting more flexible system information sending.

[0137] In some implementations, the system information update notification can also not include the information of the first downlink carrier. For example, the downlink carrier does not change before and after the system information update, and the updated system information can be received based on the previously acquired information of the downlink carrier.

[0138] Optionally, the terminal receives the first system information on the first downlink carrier, and the receiving comprises:

[0139] In a case where the first downlink carrier is not a serving downlink carrier of the terminal, the terminal switches to the first downlink carrier to receive the first system information.

[0140] In this embodiment, the terminal can switch to a non-serving downlink carrier to receive the updated system information in the case of system information update, so as to improve the system information receiving performance of the terminal.

[0141] Optionally, after the terminal switches to the first downlink carrier to receive the first system information, the method further comprises:

[0142] The terminal switches back to the serving downlink carrier to camp on.

[0143] In this embodiment, the terminal can switch to the serving downlink carrier to camp on after switching to the first downlink carrier to receive the updated system information, so that the switching overhead of the terminal can be reduced and the continuity of the terminal service can be ensured since the downlink carrier for camping on does not change.

[0144] In some embodiments, the serving downlink carrier can also be changed after the terminal switches to the first downlink carrier to receive the updated system information, which is not limited.

[0145] Optionally, the terminal receives the first system information on the first downlink carrier, comprising:

[0146] In a case where the system information update notification indicates that the first system information is received on the serving downlink carrier, or the system information update notification does not indicate the information of the first downlink carrier, the terminal receives the first system information on the first downlink carrier, and the first downlink carrier is the serving downlink carrier of the terminal.

[0147] In this embodiment, the terminal can receive the updated system information on the serving downlink carrier, so as to avoid the increase of the overhead caused by switching the downlink carrier of the terminal. In addition, in a case where the first downlink carrier is the serving downlink carrier, the system information update notification does not need to indicate the information of the first downlink carrier, so as to save the overhead of the system information update notification.

[0148] As an optional embodiment, before the terminal receives the first system information on the first downlink carrier, the method further comprises:

[0149] The terminal sends a first request to a network side device, and the first request is used to request to send the first system information.

[0150] The first request can comprise at least one of the following:

[0151] PRACH request, MsgA, Msg3

[0152] The response information can include at least one of the following:

[0153] The RAR information, the MsgB, and the Msg4.

[0154] In this embodiment, after the network-side device receives the first request, the first system information is sent to the terminal based on the request, so that the first system information is sent on demand.

[0155] Optionally, the method further includes:

[0156] The terminal receives the response information sent by the network-side device, and the response information includes information of a downlink carrier for sending the first system information.

[0157] The response information is response information sent by the network-side device based on the first system information update request.

[0158] Since the response information includes information of a downlink carrier for sending the first system information, such as the information of the first downlink carrier, the terminal can quickly receive the first system information on the downlink carrier.

[0159] In some embodiments, the response information can also not be sent, for example, the downlink carrier for sending the first system information is the service downlink carrier of the terminal, and the network-side device can not send the response information, but directly send the first system information on the downlink carrier.

[0160] As an optional embodiment, the method further includes:

[0161] When the fourth downlink carrier for sending the first system information is not the service carrier of the terminal, and the terminal does not support receiving information on the fourth downlink carrier for sending the first system information, the terminal sends a second request to the network-side device, and the second request is used to request to change the downlink carrier for sending the first system information.

[0162] The fourth downlink carrier can be understood as the downlink carrier originally used for sending the first system information.

[0163] In this embodiment, the network-side device can be requested to change the downlink carrier for sending the first system information through the second request, so as to improve the system information receiving performance of the terminal. For example, after the network-side device receives the second request, it is determined based on the request that the fourth downlink carrier for sending the first system information is not the service carrier of the terminal, and the terminal does not support receiving information on the fourth downlink carrier, so that the first system information is sent on the first downlink carrier.

[0164] Optionally, the second request comprises auxiliary information, and the auxiliary information is used to determine that the first system information is transmitted on the first downlink carrier.

[0165] The auxiliary information can enable the network-side device to determine that the first system information is transmitted on the first downlink carrier based on the auxiliary information, so as to improve the transmission flexibility of the system information.

[0166] The auxiliary information can comprise at least one of the following:

[0167] measurement information of a downlink carrier of the cell;

[0168] information of the first downlink carrier that can be used to receive the first system information;

[0169] information of a downlink carrier that cannot be used to transmit the first system information.

[0170] The measurement information of the downlink carrier of the cell can be quality or strength of a cell synchronization signal.

[0171] The measurement information of the downlink carrier of the cell can comprise measurement information of the first downlink carrier or measurement information of another downlink carrier, so as to enable the network-side device to determine that the first system information is transmitted on the first downlink carrier based on the measurement information.

[0172] The information of the first downlink carrier can be a serial number, an identifier or bandwidth part (BWP) information of the first downlink carrier.

[0173] The information of the first downlink carrier that can be used to receive the first system information can directly enable the network-side device to transmit the first system information on the first downlink carrier.

[0174] The information of the downlink carrier that cannot be used to transmit the first system information can be information of a downlink carrier other than the first uplink carrier and that cannot be used to transmit the first system information, so as to enable the network-side device to transmit the first system information on the first downlink carrier.

[0175] It should be noted that, in some embodiments, the second request can also not comprise the auxiliary information, for example, the network-side device can know that the terminal can receive system information on the first downlink carrier based on pre-acquired information, so as to change the first system information to be transmitted on the first downlink carrier.

[0176] In the embodiment of the present application, the terminal receives the first system information on the first downlink carrier, the first downlink carrier is a downlink carrier in the plurality of downlink carriers of the cell, and the first system information is at least part of the system information of the cell. Since the first downlink carrier is a downlink carrier in the plurality of downlink carriers of the cell, and the first system information is at least part of the system information of the cell, the terminal can receive the system information in the cell including the plurality of downlink carriers, to support flexible transmission of the system information, thereby improving the flexibility of the system information transmission.

[0177] Please refer to FIG. 7, which is a flowchart of another system information transmission method provided by the embodiment of the present application. As shown in FIG. 7, the method comprises the following steps:

[0178] In step 701, the network side device transmits the first system information on the first downlink carrier, the first downlink carrier is a downlink carrier in the plurality of downlink carriers of the cell, and the first system information is at least part of the system information of the cell.

[0179] Optionally, the first system information comprises at least one of the following:

[0180] at least part of the parameters dedicated to the first downlink carrier;

[0181] at least part of the minimum system information (MSI) corresponding to the first downlink carrier;

[0182] part of the MSI applicable to a second downlink carrier in the plurality of downlink carriers;

[0183] information of other carriers in the plurality of downlink carriers;

[0184] transmission information of the first other system information (OSI);

[0185] the second OSI.

[0186] Optionally, the at least part of the parameters comprises at least one of the following:

[0187] air interface time information, indication information of whether to limit access based on the first downlink carrier, at least part of the configuration parameters, uplink and downlink initial bandwidth part (BWP) configuration corresponding to the first downlink carrier, random access configuration corresponding to the first downlink carrier, downlink transmission power parameter corresponding to the first downlink carrier, common search space configuration corresponding to the first downlink carrier, and uplink and downlink time domain resource configuration corresponding to the first downlink carrier; wherein the configuration parameters are configuration parameters for receiving at least part of the system information block (SIB1) on the first downlink carrier.

[0188] Optionally, the transmission information of the first OSI comprises at least one of the following:

[0189] information of the first downlink carrier, scheduling configuration information of the first OSI, system information request configuration of the first OSI.

[0190] Optionally, the network-side device sends the first system information on the first downlink carrier, including:

[0191] The network-side device sends system information on at least part of the downlink carriers of the plurality of downlink carriers, the at least part of the downlink carriers including the first downlink carrier, and the system information sent on each of the at least part of the downlink carriers being at least part of the system information of the cell.

[0192] Optionally, the at least part of the downlink carriers are N downlink carriers, the system information of the cell including N pieces of system information, and the N downlink carriers respectively sending the N pieces of system information, N being an integer greater than 1.

[0193] The N pieces of system information can be system information with the same or different content, which can be determined based on actual needs of the network-side device, and the N pieces of system information can or can not have the same system information content.

[0194] In this way, N pieces of system information can be sent through N downlink carriers to reduce the load of each downlink carrier.

[0195] Optionally, the method further includes:

[0196] The network-side device sends a system information update notification, the system information update notification being used to notify reception of the first system information on the first downlink carrier, the first system information being updated system information.

[0197] Optionally, the network-side device sends the system information update notification, including:

[0198] The network-side device sends the system information update notification on a downlink carrier of the plurality of downlink carriers that provides camping services.

[0199] Optionally, the system information update notification includes information of the first downlink carrier.

[0200] Optionally, before the network-side device sends the first system information on the first downlink carrier, the method further includes:

[0201] The network-side device receives a first request sent by a terminal, the first request being used to request sending of the first system information.

[0202] Optionally, the method further includes:

[0203] The network-side device sends response information to the terminal, and the response information includes information of a downlink carrier used for sending the first system information.

[0204] Optionally, the first request includes at least one of the following:

[0205] PRACH request, message MsgA, Msg3

[0206] The response information includes at least one of the following:

[0207] Random access response RAR information, MsgB, Msg4.

[0208] Optionally, the method further includes:

[0209] The network-side device receives a second request sent by the terminal, and the second request is used for requesting to change a downlink carrier used for sending the first system information.

[0210] The network-side device determines, based on the second request, that the downlink carrier used for sending the first system information is changed to the first downlink carrier.

[0211] Optionally, the second request includes auxiliary information, and the auxiliary information is used for determining that the first system information is sent on the first downlink carrier.

[0212] Optionally, the auxiliary information includes at least one of the following:

[0213] Measurement information of a downlink carrier of the cell;

[0214] Information of the first downlink carrier that can be used for receiving the first system information;

[0215] Information of a downlink carrier that cannot be used for sending the first system information.

[0216] It should be noted that the embodiment is an implementation of a network-side device corresponding to the embodiment shown in FIG. 5, and the specific implementation can be referred to the related description of the embodiment shown in FIG. 5. To avoid repeated description, the embodiment will not be described herein.

[0217] The method provided by the embodiment of the application is exemplified by multiple embodiments as follows:

[0218] Embodiment one:

[0219] This embodiment mainly describes sharing of cell system message sending among multiple downlink carriers.

[0220] According to the embodiment, the system information of a cell is divided into N parts, each part is transmitted on a corresponding downlink carrier. Each system information part includes at least one of the following A to D:

[0221] A. When the system information part is transmitted on the first downlink carrier, the system information part includes at least part of parameters dedicated to the first downlink carrier, specifically including at least one of the following:

[0222] Air interface time information (SFN, slot number, symbol number), indication of whether to prohibit random access based on the downlink carrier, configuration parameters for receiving at least part of the SIB1 information or part of the SIB1 information on the downlink carrier, including PDCCH receiving configuration;

[0223] The uplink and downlink initial BWP configuration of the downlink carrier, the corresponding random access resource configuration, the downlink transmission power parameter, the common search interval configuration, the uplink and downlink time slot / symbol configuration.

[0224] B. Information of the first OSI of the cell, such as the serial number, carrier frequency, bandwidth, etc. of other downlink carriers;

[0225] C. Downlink carrier information for transmitting other system information, scheduling configuration for other system information, configuration related to system information request, etc.

[0226] D. Second OSI, including at least part of the system information in SIB2, SIB3, SIB4, …, SIB25, scheduling information of other system information.

[0227] The embodiment further includes at least one of the following:

[0228] When the terminal determines that the target system information (such as the first system information in the above embodiment) it wants to receive is not on the serving downlink carrier but is transmitted on the non-serving downlink carrier (first downlink carrier) according to the system information it has received, it needs to switch to the first downlink carrier to receive the target system information. Optionally, after the terminal receives the target system information on the first downlink carrier, it returns to the serving downlink carrier for camping;

[0229] When the terminal resides in the first downlink carrier, the terminal receives a first part of the minimum system information corresponding to the first downlink carrier from the first downlink carrier and receives a second part of the minimum system information available for the first downlink carrier from the second downlink carrier. In this way, the second downlink carrier can help the first downlink carrier to send part of the minimum system information, reducing the minimum system message sending load of the second downlink carrier. If the first downlink carrier belongs to a low-frequency carrier and has good wireless propagation performance, one first downlink carrier site can help several second downlink carrier sites to send part of the minimum system information (see the cell model in FIG. 3), which is conducive to reducing the system energy consumption.

[0230] In product implementation, when a cell includes at least one low-frequency downlink carrier and at least one high-frequency downlink carrier, as many cell system information as possible can be arranged to be sent on the low-frequency downlink carrier, and as little system information as possible can be sent on the high-frequency carrier. In this way, the resource consumption for system information sending of all high-frequency sites under the coverage of the low-frequency site can be reduced, and since the signal coverage of the low-frequency downlink carrier is good, sending as much system information as possible through the low-frequency downlink carrier is conducive to the terminal receiving the desired system information in time.

[0231] Optionally, the above terminal switching to the non-service downlink carrier to receive the target system information includes at least one of the following:

[0232] The terminal leaves the service carrier, changes the non-service downlink carrier to the service downlink carrier, and receives the target system information and the paging information on the new service downlink carrier.

[0233] The terminal receives the target system information on the non-service downlink carrier and detects the paging information on the non-service downlink carrier.

[0234] In this way, the problem that the terminal cannot monitor the broadcast information sent on the service message when receiving the target system message on the non-service downlink carrier due to the limitation of the terminal's capability can be avoided. For example, if the terminal misses the reception of the paging information on the service downlink carrier during the reception of the target system message on the non-service downlink carrier and does not monitor the paging information on the non-service downlink carrier, the terminal will miss the paging information during the reception of the target system message, cannot receive the paging information in time and initiate random access based on the received paging information, and will also cause the base station to expand the paging range, resulting in an increase in network energy consumption.

[0235] Embodiment Two:

[0236] This embodiment mainly describes the cell system information update.

[0237] When the cell has system information update, the system information update notification is sent on each downlink carrier providing camping service, for notifying the terminal to receive the updated system information on the target downlink carrier, such as receiving the first system information, i.e. the updated system information, on the first downlink carrier.

[0238] The system information update notification can further include the target downlink carrier information for sending the updated system information, such as the information of the first downlink carrier. After receiving the system information update notification, if the target downlink carrier is different from the current downlink carrier, the terminal switches to the target downlink carrier before the new system information is sent (i.e. before the next system message update period), and performs the reception of the new system information on the target downlink carrier. As shown in Fig. 6, the terminal camping on one downlink carrier switches to the target downlink carrier to receive the new system information according to the received system information update notification, the timing and flow are shown.

[0239] Optionally, the terminal receiving the new system information further includes: the terminal returns to the original service carrier for camping after receiving the new system information.

[0240] Optionally, if the downlink carrier where the terminal camps is one of the downlink carriers sending the new system information, the base station indicates in the system information update notification that the terminal receives the new system information on the current camping downlink carrier; optionally, when the downlink carrier for receiving the new system information is not indicated in the system information update notification, the terminal receives the new system information on the current camping downlink carrier.

[0241] Optionally, the base station can send the new system information on multiple downlink carriers simultaneously, and indicates the multiple downlink carriers sending the new system information in the system information update notification, and the terminal can select the downlink carrier on which to receive the new system information, which can be as follows:

[0242] When the current camping downlink carrier of the terminal is one of the downlink carriers sending the new system information, the terminal receives the new system information on the current camping downlink carrier; or

[0243] When the current camping downlink carrier of the terminal is not one of the downlink carriers sending the new system information, the terminal switches to any downlink carrier sending the new system information to receive the new system information.

[0244] The embodiment provides flexibility for the base station to send system information, and saves the network side energy consumption. When there is system information update, under the cell model shown in Fig. 3, the base station can select to send the new system information only on the low-frequency downlink carrier, avoiding sending the new system information on all downlink carriers, to save the energy consumption of the base station.

[0245] Embodiment Three:

[0246] This embodiment mainly describes sending the cell system information on demand.

[0247] According to the embodiment, when the terminal determines that the target system information (e.g., the first system information) is not broadcasted on any downlink carrier, the terminal can initiate a system message request to request the base station to send the target system information. After the terminal sends the system information request to the base station, the terminal receives response information corresponding to the system information request from the base station, and receives the target system information according to the response information. In this way, the terminal can avoid initiating a system message request when the target system information is broadcasted on other downlink carriers, thereby reducing the system energy consumption and the terminal energy consumption.

[0248] Optionally, the response information can indicate downlink carrier information, which is used to indicate the downlink carrier information of the target system information, e.g., the information of the first downlink carrier. Optionally, when the terminal requests the target system information based on the PRACH, the base station sends the downlink carrier information in the RAR response information. Optionally, when the terminal sends the target system information request in the Medium Access Control Protocol Data Unit (MAC PDU) of the MsgA or the MAC PDU of the Msg3 through the Radio Resource Control (RRC) or the Medium Access Control Control Element (MAC CE), the base station indicates the downlink carrier information of the target system information in the corresponding response message (Msg4).

[0249] Optionally, when the terminal determines that the target system information is not broadcasted on the currently camped downlink carrier, but is broadcasted on at least one other downlink carrier, and the terminal is not within the coverage of any downlink carrier of the at least one other downlink carrier, or the hardware capability of the terminal does not support any downlink carrier of the at least one other downlink carrier, the terminal can initiate a system information request.

[0250] Optionally, when the terminal sends the target system information request, some auxiliary information about the downlink carrier can be indicated, which is used for the base station to determine the downlink carrier of the target system information, and the auxiliary information includes at least one of the following:

[0251] measurement information of the downlink carrier of the current cell, e.g., the quality of the cell synchronization signal;

[0252] The downlink carrier information that can be used to receive the target system information includes a serial number of the downlink carrier; or the downlink carrier information that cannot be used to send the target system information. The downlink carrier information that cannot be used to send the target system information includes information of a downlink carrier with too poor signal quality or too low signal strength for the terminal and / or information of a downlink carrier with terminal capability not supported.

[0253] The base station, according to the auxiliary information reported by the terminal, avoids selecting a downlink carrier with too poor signal quality or too low signal strength for the terminal when determining the downlink carrier to send the target system information, thereby improving the probability of successful reception of the target system information by the terminal.

[0254] The method provided in the embodiments of the present application can be used to flexibly configure the downlink carrier to send the system information by the base station when there are multiple downlink carriers in a cell, thereby saving the energy consumption of the base station for sending the system information and saving the time-frequency resource consumption for sending the system information.

[0255] The system information transmission method provided in the embodiments of the present application can be executed by a system information transmission device. The system information transmission device provided in the embodiments of the present application is described by taking the system information transmission device as an example.

[0256] The system information transmission device provided in the embodiments of the present application can be a communication device or a component in the communication device, for example, a chip. The communication device can be a terminal, a network side device or a server, etc. For example, the terminal can include but is not limited to the types of the terminal 11 listed above, the network side device can include but is not limited to the types of the network side device 12 listed above, and the embodiments of the present application are not limited in this regard.

[0257] The system information transmission apparatus can include a receiving module, a sending module and a processing module. The receiving module, the sending module and the processing module can be implemented by software or by hardware. When implemented by hardware, the processing module can be implemented by a processor, which can include a general-purpose processor, a special-purpose processor, a central processing unit (CPU), a microprocessor, a digital signal processor (DSP), an artificial intelligent (AI) processor, a graphics processing unit (GPU), an application specific integrated circuit (ASIC), a network processor (NP), a field programmable gate array (FPGA) or other programmable logic device, a gate circuit, a transistor, a discrete hardware component, etc. The receiving module and the sending module can be implemented by a communication interface, which can include a transceiver, a pin, a circuit, a bus, a radio frequency unit, etc.

[0258] Specifically, referring to FIG. 8, when the system information transmission apparatus is a terminal or a component in the terminal, the system information transmission apparatus 800 includes:

[0259] The receiving module 801 is configured to receive first system information on a first downlink carrier, the first downlink carrier being a downlink carrier in a plurality of downlink carriers of a cell, and the first system information being at least part of system information of the cell.

[0260] Optionally, the first system information includes at least one of the following:

[0261] at least part of parameters dedicated to the first downlink carrier;

[0262] at least part of minimum system information (MSI) corresponding to the first downlink carrier;

[0263] part of MSI applicable to a second downlink carrier in the plurality of downlink carriers;

[0264] information of other carriers in the plurality of downlink carriers;

[0265] transmission information of first other system information (OSI);

[0266] second OSI.

[0267] Optionally, the at least part of the parameters include at least one of the following:

[0268] the air interface time information, the indication information of whether to limit access based on the first downlink carrier, at least part of the configuration parameters, the initial uplink and downlink bandwidth part (BWP) configuration corresponding to the first downlink carrier, the random access configuration corresponding to the first downlink carrier, the downlink transmission power parameter corresponding to the first downlink carrier, the common search space configuration corresponding to the first downlink carrier, and the uplink and downlink time domain resource configuration corresponding to the first downlink carrier; wherein the configuration parameters are configuration parameters for receiving at least part of system information block (SIB1) on the first downlink carrier.

[0269] Optionally, the transmission information of the first OSI includes at least one of the following:

[0270] information of a downlink carrier for transmitting the first OSI, scheduling configuration information of the first OSI, and system information request configuration of the first OSI.

[0271] Optionally, the receiving module 801 is further configured to perform at least one of the following:

[0272] in a case where the first system information includes part of the MSI corresponding to the first downlink carrier, receiving another part of the MSI available for the first downlink carrier on a third downlink carrier, system information transmitted on the third downlink carrier includes the another part of the MSI, and the third downlink carrier is a downlink carrier in the plurality of downlink carriers of the cell;

[0273] in a case where the information of the downlink carrier for transmitting the first OSI indicates that the downlink carrier for transmitting the first OSI is different from the service carrier of the terminal, switching to the downlink carrier for transmitting the first OSI to receive the first OSI.

[0274] Optionally, the receiving module 801 is configured to:

[0275] in a case where it is determined according to the received second system information that target system information is transmitted on the first downlink carrier, the terminal switches to the first downlink carrier to receive the first system information, and the first system information includes the target system information.

[0276] Optionally, the switching to the first downlink carrier to receive the first system information includes:

[0277] switching to the first downlink carrier to receive the first system information and paging information, and the first downlink carrier becomes a service downlink carrier of the terminal; or

[0278] switch to the first downlink carrier to receive the first system information, and detect paging information, wherein the serving downlink carrier of the terminal is a downlink carrier for receiving the second system information.

[0279] Optionally, the receiving module 801 is further configured to:

[0280] receive a system information update notification, wherein the system information update notification is used to notify receiving the first system information on the first downlink carrier, and the first system information is updated system information.

[0281] Optionally, the system information update notification comprises information of the first downlink carrier.

[0282] Optionally, the receiving module 801 is configured to:

[0283] in a case where the first downlink carrier is not the serving downlink carrier of the terminal, switch to the first downlink carrier to receive the first system information.

[0284] Optionally, the apparatus further comprises:

[0285] a processing module configured to switch back to the serving downlink carrier to camp on.

[0286] Optionally, the receiving module 801 is configured to:

[0287] in a case where the system information update notification indicates receiving the first system information on a serving downlink carrier, or the system information update notification does not indicate information of the first downlink carrier, receive the first system information on the first downlink carrier, wherein the first downlink carrier is the serving downlink carrier of the terminal.

[0288] Optionally, the apparatus further comprises:

[0289] a sending module configured to send a first request to a network side device, wherein the first request is used to request sending the first system information.

[0290] Optionally, the receiving module 801 is further configured to:

[0291] receive response information sent by the network side device, wherein the response information comprises information of a downlink carrier used to send the first system information.

[0292] Optionally, the first request comprises at least one of:

[0293] a PRACH request, a message MsgA, and Msg3

[0294] The response information comprises at least one of:

[0295] Random access response, RAR, information, MsgB, Msg4.

[0296] Optionally, the sending module of the apparatus is further configured to:

[0297] In a case where a fourth downlink carrier used for sending the first system information is not a serving carrier of the terminal, and the terminal does not support receiving information on the fourth downlink carrier used for sending the first system information, the terminal sends a second request to the network side device, the second request being used for requesting to change a downlink carrier used for sending the first system information.

[0298] Optionally, the second request comprises auxiliary information, the auxiliary information being used for determining that the first system information is sent on the first downlink carrier.

[0299] Optionally, the auxiliary information comprises at least one of the following:

[0300] Measurement information of a downlink carrier of the cell;

[0301] Information of the first downlink carrier that can be used for receiving the first system information;

[0302] Information of a downlink carrier that cannot be used for sending the first system information.

[0303] The system information transmission apparatus described above can support flexible sending of system information.

[0304] The system information transmission apparatus provided by the embodiments of the present application can implement each process implemented by the method embodiment of FIG. 5 and achieve the same technical effects. To avoid repetition, details are not described herein.

[0305] Specifically, referring to FIG. 9, when the system information transmission apparatus is a network side device or a component in the network side device, the system information transmission apparatus 900 comprises:

[0306] A sending module 901 is configured to send first system information on a first downlink carrier, the first downlink carrier being a downlink carrier in a plurality of downlink carriers of a cell, and the first system information being at least part of system information of the cell.

[0307] Optionally, the first system information comprises at least one of the following:

[0308] At least part of parameters that are specific to the first downlink carrier;

[0309] At least part of minimum system information (MSI) corresponding to the first downlink carrier;

[0310] Part of MSI that can be used for a second downlink carrier in the plurality of downlink carriers;

[0311] information of other carriers in the plurality of downlink carriers;

[0312] transmission information of a first other system information (OSI);

[0313] a second OSI.

[0314] Optionally, the at least part of the parameters comprise at least one of:

[0315] air interface time information, indication information of whether to limit access based on the first downlink carrier, at least part of configuration parameters, initial uplink and downlink bandwidth part (BWP) configuration corresponding to the first downlink carrier, random access configuration corresponding to the first downlink carrier, downlink transmission power parameter corresponding to the first downlink carrier, common search space configuration corresponding to the first downlink carrier, uplink and downlink time domain resource configuration corresponding to the first downlink carrier; wherein the configuration parameters are configuration parameters for receiving at least part of system information block (SIB1) on the first downlink carrier.

[0316] Optionally, the transmission information of the first OSI comprises at least one of:

[0317] information of a downlink carrier for sending the first OSI, scheduling configuration information of the first OSI, system information request configuration of the first OSI.

[0318] Optionally, the sending module 901 is configured to:

[0319] send system information on at least part of the plurality of downlink carriers, the at least part of the plurality of downlink carriers comprising a first downlink carrier, and the system information sent on each downlink carrier of the at least part of the plurality of downlink carriers being at least part of system information of the cell.

[0320] Optionally, the at least part of the plurality of downlink carriers is N downlink carriers, the system information of the cell comprises N pieces of system information, and the N pieces of system information are respectively sent on the N downlink carriers, N being an integer greater than 1.

[0321] Optionally, the sending module 901 is further configured to:

[0322] send a system information update notification, the system information update notification being used to notify reception of the first system information on the first downlink carrier, the first system information being updated system information.

[0323] Optionally, the sending of the system information update notification comprises:

[0324] sending the system information update notification on a downlink carrier in the plurality of downlink carriers that provides camping services.

[0325] Optionally, the system information update notification comprises information of the first downlink carrier.

[0326] Optionally, the apparatus further comprises:

[0327] a receiving module configured to receive a first request sent by a terminal, the first request being used to request sending of the first system information.

[0328] Optionally, the sending module 901 is further configured to:

[0329] send response information to the terminal, the response information comprising information of a downlink carrier used to send the first system information.

[0330] Optionally, the first request comprises at least one of:

[0331] a PRACH request, a message MsgA, Msg3

[0332] The response information comprises at least one of:

[0333] random access response RAR information, MsgB, Msg4.

[0334] Optionally, the receiving module of the apparatus is further configured to:

[0335] receive a second request sent by a terminal, the second request being used to request changing of a downlink carrier used to send the first system information;

[0336] The apparatus further comprises:

[0337] a processing module configured to determine, based on the second request, that a downlink carrier used to send the first system information is changed to the first downlink carrier.

[0338] Optionally, the second request comprises auxiliary information, the auxiliary information being used to determine that the first system information is sent on the first downlink carrier.

[0339] Optionally, the auxiliary information comprises at least one of:

[0340] measurement information of a downlink carrier of the cell;

[0341] information of the first downlink carrier that can be used to receive the first system information;

[0342] information of a downlink carrier that cannot be used to send the first system information.

[0343] The above system information transmission apparatus can improve flexibility of system information sending.

[0344] The system information transmission apparatus provided by the embodiments of the present application can realize each process of the method embodiment of FIG. 7, and achieve the same technical effects. To avoid repetition, details are not described herein.

[0345] As shown in FIG. 10, the embodiments of the present application further provide a communication device 1000, which includes a processor 1001 and a memory 1002, and the memory 1002 stores programs or instructions executable on the processor 1001. For example, when the communication device 1000 is a terminal, the programs or instructions are executed by the processor 1001 to realize each step of the system information transmission method embodiments described above, and achieve the same technical effects. When the communication device 1000 is a network side device, the programs or instructions are executed by the processor 1001 to realize each step of the system information transmission method embodiments described above, and achieve the same technical effects. To avoid repetition, details are not described herein.

[0346] The embodiments of the present application further provide a terminal, which includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run programs or instructions to realize the steps in the method embodiments shown in FIG. 5. The terminal embodiment corresponds to the terminal side method embodiments described above, and each implementation process and implementation manner of the method embodiments can be applied to the terminal embodiment, and achieve the same technical effects. The terminal can be the system information transmission apparatus shown in FIG. 8. Specifically, FIG. 11 is a schematic diagram of a hardware structure of a terminal for implementing the embodiments of the present application.

[0347] The terminal 1100 includes, but is not limited to, at least part of components such as a radio frequency unit 1101, a network module 1102, an audio output unit 1103, an input unit 1104, a sensor 1105, a display unit 1106, a user input unit 1107, an interface unit 1108, a memory 1109, and a processor 1110.

[0348] Those skilled in the art can understand that the terminal 1100 can further include a power supply (such as a battery) for supplying power to each component, and the power supply can be logically connected to the processor 1110 through a power management system, so as to realize functions such as power management, discharge management, and power consumption management through the power management system. The terminal structure shown in FIG. 11 does not constitute a limitation on the terminal, and the terminal can include more or fewer components than those shown, or combine certain components, or different component arrangements, which are not described herein.

[0349] It should be understood that in the embodiments of the present application, the input unit 1104 can include a graphics processor 11041 and a microphone 11042, and the graphics processor 11041 processes image data of a still picture or a video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 1106 can include a display panel 11061, which can be configured in the form of a liquid crystal display, an organic light-emitting diode, etc. The user input unit 1107 includes at least one of a touch panel 11071 and other input devices 11072. The touch panel 11071 is also called a touch screen. The touch panel 11071 can include two parts of a touch detection device and a touch controller. The other input devices 11072 can include, but are not limited to, a physical keyboard, function keys (such as volume control keys, on-off keys, etc.), a trackball, a mouse, a joystick, and the like, which will not be described here.

[0350] In the embodiments of the present application, after the radio frequency unit 1101 receives the downlink data from the network side device, it can be transmitted to the processor 1110 for processing. In addition, the radio frequency unit 1101 can send uplink data to the network side device. Generally, the radio frequency unit 1101 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0351] The memory 1109 can be used to store software programs or instructions and various data. The memory 1109 can mainly include a first storage area storing programs or instructions and a second storage area storing data, wherein the first storage area can store an operating system, application programs or instructions required by at least one function (such as a sound playing function, an image playing function, etc.), and the like. In addition, the memory 1109 can include a volatile memory or a non-volatile memory. The non-volatile memory can be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically EPROM (EEPROM), or a flash memory. The volatile memory can be a Random Access Memory (RAM), a Static RAM (SRAM), a Dynamic RAM (DRAM), a Synchronous DRAM (SDRAM), a Double Data Rate SDRAM (DDR SDRAM), an Enhanced SDRAM (ESDRAM), a Synch link DRAM (SLDRAM), and a Direct Rambus RAM (DRRAM). The memory 1109 in the embodiments of the present application includes but is not limited to these and any other suitable types of memory.

[0352] The processor 1110 can include one or more processing units; optionally, the processor 1110 integrates an application processor and a modem processor, wherein the application processor mainly processes operations related to an operating system, a user interface, and an application program, and the modem processor mainly processes wireless communication signals, such as a baseband processor. It can be understood that the above-mentioned modem processor can also not be integrated into the processor 1110.

[0353] The radio frequency unit 1101 is configured to receive first system information on a first downlink carrier, the first downlink carrier being a downlink carrier in a plurality of downlink carriers of a cell, and the first system information being at least part of system information of the cell.

[0354] Optionally, the first system information includes at least one of the following:

[0355] at least part of parameters dedicated to the first downlink carrier;

[0356] at least part of minimum system information (MSI) corresponding to the first downlink carrier;

[0357] part of MSI available for a second downlink carrier of the plurality of downlink carriers;

[0358] information of other carriers of the plurality of downlink carriers;

[0359] transmission information of first other system information (OSI);

[0360] second OSI.

[0361] Optionally, the at least part of parameters comprises at least one of the following:

[0362] air interface time information, indication information of whether to limit access based on the first downlink carrier, at least part of configuration parameters, uplink and downlink initial bandwidth part (BWP) configuration corresponding to the first downlink carrier, random access configuration corresponding to the first downlink carrier, downlink transmission power parameter corresponding to the first downlink carrier, common search space configuration corresponding to the first downlink carrier, uplink and downlink time domain resource configuration corresponding to the first downlink carrier; wherein the configuration parameters are configuration parameters for receiving at least part of system information block (SIB1) on the first downlink carrier.

[0363] Optionally, the transmission information of the first OSI comprises at least one of the following:

[0364] information of a downlink carrier for sending the first OSI, scheduling configuration information of the first OSI, system information request configuration of the first OSI.

[0365] Optionally, the radio frequency unit 1101 is further configured to perform at least one of the following:

[0366] in a case where the first system information comprises part of MSI corresponding to the first downlink carrier, receiving another part of MSI available for the first downlink carrier on a third downlink carrier, system information sent on the third downlink carrier comprises the another part of MSI, and the third downlink carrier is a downlink carrier of the plurality of downlink carriers of the cell;

[0367] in a case where the information of the downlink carrier of the first OSI indicates that the downlink carrier for sending the first OSI is different from a serving carrier of the terminal, switching to the downlink carrier for sending the first OSI to receive the first OSI.

[0368] Optionally, receiving the first system information on the first downlink carrier comprises:

[0369] According to a case that it is determined that the target system information is sent on the first downlink carrier according to the received second system information, the terminal switches to receive the first system information on the first downlink carrier, and the first system information comprises the target system information.

[0370] Optionally, the switching to receive the first system information on the first downlink carrier comprises:

[0371] Switching to receive the first system information and paging information on the first downlink carrier, and the first downlink carrier becomes a serving downlink carrier of the terminal; or

[0372] Switching to receive the first system information on the first downlink carrier, and detecting paging information, and a serving downlink carrier of the terminal is a downlink carrier for receiving the second system information.

[0373] Optionally, the radio frequency unit 1101 is further configured to:

[0374] Receiving a system information update notification, and the system information update notification is used to notify that the first system information is received on the first downlink carrier, and the first system information is updated system information.

[0375] Optionally, the system information update notification comprises information of the first downlink carrier.

[0376] Optionally, the receiving the first system information on the first downlink carrier comprises:

[0377] In a case that the first downlink carrier is not a serving downlink carrier of the terminal, switching to receive the first system information on the first downlink carrier.

[0378] Optionally, after the switching to receive the first system information on the first downlink carrier, the processor 1110 is further configured to:

[0379] Switching back to camp on the serving downlink carrier.

[0380] Optionally, the receiving the first system information on the first downlink carrier comprises:

[0381] In a case that the system information update notification indicates that the first system information is received on a serving downlink carrier, or the system information update notification does not indicate information of the first downlink carrier, receiving the first system information on the first downlink carrier, and the first downlink carrier is a serving downlink carrier of the terminal.

[0382] Optionally, before the receiving the first system information on the first downlink carrier, the radio frequency unit 1101 is further configured to:

[0383] The first request is used to request the first system information.

[0384] Optionally, the radio frequency unit 1101 is further configured to:

[0385] The response information comprises at least one of the following:

[0386] Optionally, the first request comprises at least one of the following:

[0387] PRACH request, message MsgA, Msg3

[0388] The response information comprises at least one of the following:

[0389] Random access response RAR information, MsgB, Msg4.

[0390] Optionally, the radio frequency unit 1101 is further configured to:

[0391] In a case where the fourth downlink carrier for transmitting the first system information is not a serving carrier of the terminal and the terminal does not support receiving information on the fourth downlink carrier for transmitting the first system information, the radio frequency unit 1101 is configured to send a second request to the network side device, the second request being used to request changing the downlink carrier for transmitting the first system information.

[0392] The radio frequency unit 1101 is further configured to: the second request comprises auxiliary information used to determine that the first system information is transmitted on the first downlink carrier.

[0393] The radio frequency unit 1101 is further configured to: the auxiliary information comprises at least one of the following:

[0394] Measurement information of a downlink carrier of the cell;

[0395] Information of the first downlink carrier available for receiving the first system information;

[0396] Information of a downlink carrier unavailable for transmitting the first system information.

[0397] The terminal can support flexible transmission of system information.

[0398] It can be understood that the implementation process of each implementation manner mentioned in the embodiment can refer to the related description of the system information transmission method embodiment, and achieve the same or corresponding technical effects. To avoid repetition, it will not be described here.

[0399] The embodiment of the present application further provides a network side device, comprising a processor and a communication interface, the communication interface is coupled with the processor, and the processor is used for running programs or instructions to realize the steps of the method embodiment shown in FIG. 7. The network side device embodiment corresponds to the network side device method embodiment described above, and each implementation process and implementation manner of the method embodiment described above can be applied to the network side device embodiment and can achieve the same technical effects.

[0400] Specifically, the embodiment of the present application further provides a network side device, which can be the system information transmission apparatus shown in FIG. 9. As shown in FIG. 12, the network side device 1200 comprises an antenna 1201, a radio frequency device 1202, a baseband device 1203, a processor 1204 and a memory 1205. The antenna 1201 is connected with the radio frequency device 1202. In the uplink direction, the radio frequency device 1202 receives information through the antenna 1201 and sends the received information to the baseband device 1203 for processing. In the downlink direction, the baseband device 1203 processes the information to be sent and sends it to the radio frequency device 1202, and the radio frequency device 1202 processes the received information and sends it out through the antenna 1201.

[0401] The method performed by the network side device in the above embodiment can be implemented in the baseband device 1203, which comprises a baseband processor.

[0402] The baseband device 1203 may, for example, comprise at least one baseband board, and a plurality of chips are arranged on the baseband board, as shown in FIG. 12, one of the chips is, for example, a baseband processor, which is connected with the memory 1205 through a bus interface to call the programs in the memory 1205 and execute the network device operations shown in the above method embodiments.

[0403] The network side device may, for example, further comprise a network interface 1206, which is, for example, a common public radio interface (CPRI).

[0404] Specifically, the network side device 1200 of the embodiment of the present application further comprises instructions or programs stored in the memory 1205 and executable on the processor 1204, the processor 1204 calls the instructions or programs in the memory 1205 to execute the methods performed by the modules shown in FIG. 9 and achieve the same technical effects, and thus the description is omitted here.

[0405] The radio frequency device 1202 is configured to send first system information on a first downlink carrier, the first downlink carrier being a downlink carrier in a plurality of downlink carriers of a cell, and the first system information being at least part of system information of the cell.

[0406] Optionally, the first system information comprises at least one of:

[0407] at least part of parameters dedicated to the first downlink carrier;

[0408] at least part of minimum system information (MSI) corresponding to the first downlink carrier;

[0409] part of MSI available for a second downlink carrier in the plurality of downlink carriers;

[0410] information of other carriers in the plurality of downlink carriers;

[0411] transmission information of first other system information (OSI);

[0412] second OSI.

[0413] Optionally, the at least part of parameters comprises at least one of:

[0414] air interface time information, indication information of whether to limit access based on the first downlink carrier, at least part of configuration parameters, uplink / downlink initial bandwidth part (BWP) configuration corresponding to the first downlink carrier, random access configuration corresponding to the first downlink carrier, downlink transmit power parameter corresponding to the first downlink carrier, common search space configuration corresponding to the first downlink carrier, uplink / downlink time domain resource configuration corresponding to the first downlink carrier; wherein the configuration parameters are configuration parameters for receiving at least part of system information block (SIB1) on the first downlink carrier.

[0415] Optionally, the transmission information of the first OSI comprises at least one of:

[0416] information of a downlink carrier for sending the first OSI, scheduling configuration information of the first OSI, system information request configuration of the first OSI.

[0417] Optionally, the sending the first system information on the first downlink carrier comprises:

[0418] the network side device sends system information on at least part of downlink carriers in the plurality of downlink carriers, the at least part of downlink carriers comprising the first downlink carrier, and the system information sent on each downlink carrier in the at least part of downlink carriers being at least part of system information of the cell.

[0419] Optionally, the at least part of downlink carriers are N downlink carriers, the system information of the cell comprises N pieces of system information, and the N pieces of system information are respectively sent on the N downlink carriers, N being an integer greater than 1.

[0420] Optionally, the radio frequency device 1202 is further configured to:

[0421] sending a system information update notification, the system information update notification being used for notifying receiving the first system information on the first downlink carrier, the first system information being updated system information.

[0422] Optionally, the system information update notification includes information of the first downlink carrier.

[0423] sending the system information update notification on a downlink carrier in the plurality of downlink carriers that provides camping services.

[0424] Optionally, the system information update notification includes information of the first downlink carrier.

[0425] Optionally, before sending the first system information on the first downlink carrier, the radio frequency device 1202 is further configured to:

[0426] receiving a first request sent by a terminal, the first request being used for requesting sending the first system information.

[0427] Optionally, the radio frequency device 1202 is further configured to:

[0428] sending response information to the terminal, the response information including information of a downlink carrier used for sending the first system information.

[0429] Optionally, the first request includes at least one of:

[0430] a PRACH request, a message MsgA, Msg3

[0431] The response information includes at least one of:

[0432] random access response RAR information, MsgB, Msg4.

[0433] Optionally, the radio frequency device 1202 is further configured to:

[0434] receiving a second request sent by a terminal, the second request being used for requesting changing a downlink carrier used for sending the first system information;

[0435] determining, based on the second request, that the downlink carrier used for sending the first system information is changed to the first downlink carrier.

[0436] Optionally, the second request includes auxiliary information, the auxiliary information being used for determining that the first system information is sent on the first downlink carrier.

[0437] Optionally, the auxiliary information includes at least one of:

[0438] measurement information of a downlink carrier of the cell;

[0439] information of the first downlink carrier available for receiving the first system information;

[0440] information of the downlink carrier unavailable for transmitting the first system information.

[0441] The network-side device can improve flexibility of system information transmission.

[0442] It can be understood that the implementation process of each implementation manner mentioned in the embodiment can refer to the related description of the system information transmission method embodiment, and achieve the same or corresponding technical effects. To avoid repetition, it will not be described here.

[0443] The embodiment of the application further provides a readable storage medium, the readable storage medium stores a program or instructions, the program or instructions are executed by a processor to realize each process of the system information transmission method embodiment, and the same technical effects can be achieved. To avoid repetition, it will not be described here.

[0444] The processor is the processor in the terminal in the above embodiments. The readable storage medium includes a computer readable storage medium, such as a computer readable memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc. In some examples, the readable storage medium can be a non-transitory readable storage medium.

[0445] The embodiment of the application further provides a chip, the chip includes a processor and a communication interface, the communication interface and the processor are coupled, the processor is used to run a program or instructions, realize each process of the system information transmission method embodiment, and the same technical effects can be achieved. To avoid repetition, it will not be described here.

[0446] It should be understood that the chip mentioned in the embodiment of the application can also be referred to as a system chip, a system chip, a chip system or a system on chip, etc.

[0447] The embodiment of the application further provides a computer program / program product, the computer program / program product is stored in a storage medium, the computer program / program product is executed by at least one processor to realize each process of the system information transmission method embodiment, and the same technical effects can be achieved. To avoid repetition, it will not be described here.

[0448] The embodiment of the application further provides a wireless communication system, including: a terminal and a network-side device, the terminal can be used to execute the steps of the system information transmission method of the terminal side provided by the embodiment of the application, and the network-side device can be used to execute the steps of the system information transmission method of the network-side device provided by the embodiment of the application.

[0449] It should be noted that, in the present document, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises a", "comprising", or the like does not, without more constraints, preclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element. Furthermore, it is to be understood that the methods and apparatuses of the present application can be carried out by specific hardware, software, or a combination thereof, and that the scope of the application is not limited to the specific order of execution of the steps described in the examples. In addition, features described in relation to certain examples can be combined in other examples.

[0450] From the above description of the embodiments, it is clear that the above-mentioned method can be realized by means of a computer software product and a general hardware platform, of course, it can also be realized by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disc, optical disc, etc.), and includes a plurality of instructions for making the terminal or network side device execute the method described in each embodiment of the present application.

[0451] The embodiments of the present application are described above in combination with the drawings, but the present application is not limited to the above-mentioned specific embodiments, the above-mentioned specific embodiments are only illustrative, not restrictive, and those skilled in the art can make many forms of embodiments under the inspiration of the present application without departing from the scope of the present application and the scope protected by the claims.

Claims

A system information transmission method, wherein, The method comprises: The terminal receives first system information on a first downlink carrier, the first downlink carrier being a downlink carrier in a plurality of downlink carriers of a cell, and the first system information being at least part of system information of the cell. The method of claim 1, wherein, The first system information comprises at least one of: at least part of parameters dedicated to the first downlink carrier; at least part of minimum system information (MSI) corresponding to the first downlink carrier; part of MSI available for a second downlink carrier in the plurality of downlink carriers; information of other carriers in the plurality of downlink carriers; transmission information of first other system information (OSI); second OSI. The method of claim 2, wherein, The at least part of parameters comprises at least one of: air interface time information, indication information of whether to limit access based on the first downlink carrier, at least part of configuration parameters, uplink and downlink initial bandwidth part (BWP) configuration corresponding to the first downlink carrier, random access configuration corresponding to the first downlink carrier, downlink transmission power parameter corresponding to the first downlink carrier, common search space configuration corresponding to the first downlink carrier, uplink and downlink time domain resource configuration corresponding to the first downlink carrier; wherein the configuration parameters are configuration parameters for receiving at least part of system information block (SIB1) on the first downlink carrier. The method according to claim 2 or 3, wherein The transmission information of the first OSI comprises at least one of: information of a downlink carrier for sending the first OSI, scheduling configuration information of the first OSI, system information request configuration of the first OSI. The method of any one of claims 2 to 4, wherein, The method further comprises at least one of: in a case where the first system information comprises part of MSI corresponding to the first downlink carrier, the terminal receives another part of MSI available for the first downlink carrier on a third downlink carrier, system information sent on the third downlink carrier comprises the another part of MSI, and the third downlink carrier is a downlink carrier in the plurality of downlink carriers of the cell; in a case where information of a downlink carrier for sending the first OSI indicated by the first OSI is different from a serving carrier of the terminal, the terminal switches to the downlink carrier for sending the first OSI to receive the first OSI. The method of any one of claims 1 to 5, wherein, The terminal receives first system information on a first downlink carrier, comprising: in a case where the terminal determines that target system information is sent on the first downlink carrier according to having received second system information, the terminal switches to the first downlink carrier to receive the first system information, and the first system information comprises the target system information. The method of claim 6, wherein, The terminal switches to the first downlink carrier to receive the first system information, comprising: The terminal switches to the first downlink carrier to receive the first system information and paging information, and the first downlink carrier becomes a serving downlink carrier of the terminal; or The terminal switches to the first downlink carrier to receive the first system information, and detects paging information, and a serving downlink carrier of the terminal is a downlink carrier for receiving the second system information. The method of any one of claims 1 to 7, wherein, The method further comprises: The terminal receives a system information update notification, the system information update notification being used to notify receiving the first system information on the first downlink carrier, the first system information being updated system information. The method of claim 8, wherein, The system information update notification comprises information of the first downlink carrier. The method according to claim 8 or 9, wherein The terminal receives the first system information on the first downlink carrier, comprising: In the case that the first downlink carrier is not a serving downlink carrier of the terminal, the terminal switches to receive the first system information on the first downlink carrier. The method of claim 10, wherein, After the terminal switches to receive the first system information on the first downlink carrier, the method further comprises: The terminal switches back to camp on the serving downlink carrier. The method of claim 8, wherein, The terminal receives the first system information on the first downlink carrier, comprising: In the case that the system information update notification indicates receiving the first system information on a serving downlink carrier, or the system information update notification does not indicate information of the first downlink carrier, the terminal receives the first system information on the first downlink carrier, the first downlink carrier being a serving downlink carrier of the terminal. The method of any one of claims 1 to 12, wherein, Before the terminal receives the first system information on the first downlink carrier, the method further comprises: The terminal sends a first request to a network side device, the first request being used to request sending the first system information. The method of claim 13, wherein, The method further comprises: The terminal receives response information sent by the network side device, the response information comprising information of a downlink carrier used to send the first system information. The method according to claim 13 or 14, wherein The first request comprises at least one of: PRACH request, message MsgA, Msg3 The response information comprises at least one of: Random access response RAR information, MsgB, Msg4. The method of any one of claims 1 to 15, wherein, The method further comprises: In the case that a fourth downlink carrier used to send the first system information is not a serving carrier of the terminal, and the terminal does not support receiving information on the fourth downlink carrier used to send the first system information, the terminal sends a second request to a network side device, the second request being used to request changing a downlink carrier used to send the first system information. The method of claim 16, wherein, The second request comprises auxiliary information, the auxiliary information being used to determine sending the first system information on the first downlink carrier. The method of claim 17, wherein, The auxiliary information comprises at least one of: Measurement information of a downlink carrier of the cell; Information of the first downlink carrier available for receiving the first system information; Information of a downlink carrier unavailable for sending the first system information. A system information transmission method, wherein, Comprising: A network side device sends first system information on a first downlink carrier, the first downlink carrier being a downlink carrier in a plurality of downlink carriers of a cell, and the first system information being at least part of system information of the cell. The method of claim 19, wherein, The first system information comprises at least one of: At least part of parameters dedicated to the first downlink carrier; At least part of minimum system information MSI corresponding to the first downlink carrier; Part of MSI available for a second downlink carrier in the plurality of downlink carriers; Information of other carriers in the plurality of downlink carriers; Transmission information of first other system information OSI; The second OSI. The method of claim 20, wherein, The at least partial parameters include at least one of the following: air interface time information, indication information of whether to limit access based on the first downlink carrier, at least part of configuration parameters, initial uplink and downlink bandwidth part (BWP) configuration corresponding to the first downlink carrier, random access configuration corresponding to the first downlink carrier, downlink transmission power parameter corresponding to the first downlink carrier, common search space configuration corresponding to the first downlink carrier, and uplink and downlink time domain resource configuration corresponding to the first downlink carrier; wherein the configuration parameters are configuration parameters for receiving at least partial system information block (SIB1) on the first downlink carrier. The method according to claim 20 or 21, wherein The transmission information of the first OSI includes at least one of the following: information of a downlink carrier for transmitting the first OSI, scheduling configuration information of the first OSI, and system information request configuration of the first OSI. The method of any one of claims 19 to 22, wherein, The network-side device transmits the first system information on the first downlink carrier, including: The network-side device transmits system information on at least partial downlink carriers of the plurality of downlink carriers, the at least partial downlink carriers including the first downlink carrier, and the system information transmitted on each of the at least partial downlink carriers being at least partial system information of the cell. The method of claim 23, wherein, The at least partial downlink carriers are N downlink carriers, the system information of the cell includes N pieces of system information, and the N pieces of system information are respectively transmitted on the N downlink carriers, N being an integer greater than 1. The method of any one of claims 19 to 24, wherein, The method further includes: The network-side device transmits a system information update notification, the system information update notification being used to notify reception of the first system information on the first downlink carrier, the first system information being updated system information. The method of claim 25, wherein, The network-side device transmits a system information update notification, including: The network-side device transmits a system information update notification on a downlink carrier of the plurality of downlink carriers that provides camping services. The method of claim 25 or 26, wherein, The system information update notification includes information of the first downlink carrier. The method of any one of claims 19 to 27, wherein Before the network-side device transmits the first system information on the first downlink carrier, the method further includes: The network-side device receives a first request transmitted by a terminal, the first request being used to request transmission of the first system information. The method of claim 28, wherein, The method further includes: The network-side device transmits response information to the terminal, the response information including information of a downlink carrier for transmitting the first system information. The method of claim 29, wherein, The first request includes at least one of the following: a PRACH request, a message MsgA, and Msg3 The response information includes at least one of the following: random access response (RAR) information, a message MsgB, and Msg4. The method of any one of claims 19-30, wherein The method further includes: The network-side device receives a second request transmitted by a terminal, the second request being used to request change of a downlink carrier for transmitting the first system information; The network-side device determines, based on the second request, that the downlink carrier for transmitting the first system information is changed to the first downlink carrier. The method of claim 31, wherein, The second request includes auxiliary information, the auxiliary information being used to determine transmission of the first system information on the first downlink carrier. The method of claim 32, wherein, The auxiliary information includes at least one of the following: measurement information of a downlink carrier of the cell; information of the first downlink carrier available for receiving the first system information; information of a downlink carrier unavailable for sending the first system information. A system information transmission apparatus, wherein, comprising: a receiving module, configured to receive first system information on a first downlink carrier, the first downlink carrier being a downlink carrier of a plurality of downlink carriers of a cell, and the first system information being at least part of system information of the cell. The apparatus of claim 34, wherein the receiving module is further configured to perform at least one of the following: in a case where the first system information comprises part of MSI corresponding to the first downlink carrier, receive another part of MSI available for the first downlink carrier on a third downlink carrier, system information sent on the third downlink carrier comprising the another part of MSI, the third downlink carrier being a downlink carrier of the plurality of downlink carriers of the cell; in a case where information of a downlink carrier of the first OSI indicated by the first OSI indicates that a downlink carrier used for sending the first OSI is different from a serving carrier of the terminal, switch to the downlink carrier used for sending the first OSI to receive the first OSI. The apparatus of claim 34 or 35, wherein the receiving module is further configured to: receive a system information update notification, the system information update notification being used for notifying that the first system information is received on the first downlink carrier, the first system information being updated system information. The apparatus of any one of claims 34 to 36, wherein the apparatus further comprises: a sending module, configured to send a first request to a network side device, the first request being used for requesting to send the first system information. A system information transmission apparatus, wherein, comprising: a sending module, configured to send first system information on a first downlink carrier, the first downlink carrier being a downlink carrier of a plurality of downlink carriers of a cell, and the first system information being at least part of system information of the cell. The apparatus of claim 38, wherein the sending module is further configured to: send a system information update notification, the system information update notification being used for notifying that the first system information is received on the first downlink carrier, the first system information being updated system information. The apparatus of claim 38 or 39, wherein the apparatus further comprises: a receiving module, configured to receive a first request sent by a terminal, the first request being used for requesting to send the first system information. A terminal, wherein, comprising a processor and a memory, the memory storing programs or instructions executable on the processor, the programs or instructions being executed by the processor to implement steps of the system information transmission method according to any one of claims 1 to 18. A network-side device, wherein, comprising a processor and a memory, the memory storing programs or instructions executable on the processor, the programs or instructions being executed by the processor to implement steps of the system information transmission method according to any one of claims 19 to 33. A readable storage medium, wherein, the readable storage medium stores programs or instructions, the programs or instructions being executed by a processor to implement steps of the system information transmission method according to any one of claims 1 to 18, or to implement steps of the system information transmission method according to any one of claims 19 to 33. A computer program product, wherein, The computer program product is stored in a storage medium, and the computer program product is executed by at least one processor to implement the steps of the system information transmission method according to any one of claims 1 to 18, or implement the steps of the system information transmission method according to any one of claims 19 to 33.

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