Method and device for acquiring system information

Abstract

The invention discloses a method and a device for acquiring system information, which are beneficial to avoiding unnecessary acquisition requests and improving the request success rate of second system information, so that the system performance is improved. The method comprises: based on first system information, determining a request mode for obtaining second system information, the first system information comprising request configuration information of the second system information, the first system information being system information obtained by a terminal before obtaining the second system information, or the first system information being system information stored by the terminal; the request modes comprise a first request mode and a second request mode, the first request mode is a mode of requesting second system information through resources configured by network equipment, and the second request mode is a mode of requesting the second system information through wireless resource control signaling; and initiating an acquisition request of the second system information by adopting the request mode.

Description

Technical Field

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

[0002] Currently, other system information (OSI) refers to system information other than the master information block (MIB) and the first system information (e.g., system information block 1 (SIB1)), which is referred to as second system information in this paper. Second system information can also be on-demand other system information (OD-OSI), meaning that the terminal requests and obtains second system information when needed.

[0003] The terminal needs to determine the request method for obtaining the second system information based on the first system information. The terminal's request methods for obtaining the second system information include a first request method and a second request method. The first request method is based on message 1 (MSG1-based), meaning the terminal requests the second system information through resources configured by the network device. The second request method is based on message 3 (MSG3-based), meaning the terminal requests the second system information through radio resource control (RRC) signaling.

[0004] In network energy-saving scenarios, network devices do not continuously send first system information, and terminals cannot directly obtain first system information when they need to acquire second system information. In this scenario, determining which request method the terminal uses to acquire second system information—that is, how the terminal determines the request method for acquiring second system information—is a pressing technical problem that needs to be solved. Summary of the Invention

[0005] This application provides a method and apparatus for obtaining system information. In network energy-saving scenarios, where network devices do not continuously send first system information, the terminal can determine the request method for second system information. This solution can avoid unnecessary acquisition requests, improve the success rate of second system information requests, and thus improve system performance.

[0006] To achieve the above objectives, the embodiments of this application adopt the following technical solutions:

[0007] Firstly, a method for obtaining system information is provided, which can be executed by a terminal or by a chip or circuit in the terminal. The method includes: determining a request method for obtaining second system information based on first system information, wherein the first system information includes request configuration information for the second system information, the first system information is system information obtained by the terminal before obtaining the second system information, or the first system information is system information stored in the terminal, and the request method includes a first request method and a second request method, wherein the first request method is a method of requesting the second system information through resources configured by a network device, and the second request method is a method of requesting the second system information through radio resource control signaling; and initiating a request to obtain the second system information using the aforementioned request method.

[0008] Based on the method for obtaining system information provided in the first aspect, the terminal uses the first system information to determine the request method for obtaining the second system information. In network energy-saving scenarios, although network devices do not continuously send the first system information, the terminal can actively request the first system information or use the system information stored in the terminal itself to determine the request method for obtaining the second system information. Even when green network energy saving is achieved, the terminal can still use the first system information to determine the request method for requesting the second system information. This method avoids unnecessary acquisition requests, improves the success rate of second system information requests, and thus avoids unnecessary energy consumption by network devices.

[0009] In conjunction with the first aspect, in some implementations of the first aspect, the method for obtaining system information before initiating the second system information acquisition request further includes: initiating the first system information acquisition request and acquiring the first system information.

[0010] Based on the need for green and energy-efficient networks, the first system information is sent non-continuously and periodically. This means that the solution allows network devices to send the first system information only after receiving a request from a terminal. On one hand, this reduces the number of times network devices send the first system information, achieving network energy conservation. On the other hand, by obtaining the first system information in a timely manner, the terminal can understand the status of the second system information, facilitating the determination of the request method for obtaining the second system information and avoiding unnecessary requests.

[0011] In conjunction with the first aspect, in certain implementations of the first aspect, initiating a request to obtain first system information includes: initiating a request to obtain first system information under the condition that preset conditions are met, the preset conditions including at least one of the following: the first system information is in a state where it has not been sent by the network device; the first system information is invalid first system information; the first system information is on-demand first system information OD-SIB1; the cell where the terminal is located is a cell that supports on-demand transmission of first system information; the second system information is invalid second system information; the second system information is in a state where it has not been sent by the network device; the second system information is on-demand second system information OD-SIBx; the terminal's request for second system information fails; or, the terminal receives change indication information, the change indication information being used to indicate that the system information broadcast status and / or system information request resources have changed.

[0012] To achieve network energy conservation while ensuring timely and accurate determination of the request method for obtaining information from the second system, the terminal can only initiate a request to obtain information from the first system if the aforementioned preset conditions are met. This restriction avoids resource waste caused by unnecessary requests to obtain information from the first system.

[0013] In conjunction with the first aspect, in some implementations of the first aspect, the method for obtaining system information may further include: under the condition that preset conditions are met, the first system information is the first system information stored by the terminal, the preset conditions including at least one of the following: the first system information is in a state where it has not been sent by the network device; the first system information is invalid; the first system information is on-demand first system information; the cell where the terminal is located is a cell that supports on-demand transmission of the first system information; the second system information is invalid; the second system information is in a state where it has not been sent by the network device; the second system information is on-demand second system information OD-SIBx; the terminal's request for the second system information fails; or, the terminal receives change indication information, the change indication information being used to indicate that the system information broadcast status and / or system information request resources have changed.

[0014] In addition to determining the request method for obtaining the second system information based on the reacquired first system information, the terminal can also determine the request method based on the stored first system information. The advantage of this approach is that it can fully utilize the existing first system information in the terminal's memory without having to reacquire it, further reducing the consumption of network device resources.

[0015] In conjunction with the first aspect, in some implementations of the first aspect, initiating a request to obtain second system information may further include: initiating a request to obtain first system information and second system information, wherein the request is used to obtain the second system information and to obtain the first system information again.

[0016] While initiating a request to acquire second system information, the terminal can also initiate a request to acquire first system information. The advantage of this scheme is that it can acquire both types of system information simultaneously. The terminal can not only receive the required second system information but also acquire and store the updated first system information, achieving information synchronization with network devices and facilitating the determination of the request method for acquiring second system information in the future.

[0017] In conjunction with the first aspect, in some implementations of the first aspect, if the acquisition request is a wireless resource control system information request, the wireless resource control system information request includes indication information for acquiring first system information and second system information; or, the acquisition request is sent through resources configured by the network device, and the resources are used to indicate the request to acquire first system information and second system information.

[0018] When a terminal initiates a first system information request and a second system information request, these two types of requests can be carried within the wireless resource control system information or sent through resources configured in the network device. This scheme provides the terminal with different options for obtaining the first and second system information.

[0019] In conjunction with the first aspect, in some implementations of the first aspect, the method for obtaining system information also includes: initiating a request to obtain the first system information.

[0020] In this scheme, the terminal determines the request method for obtaining the second system information based on its stored first system information and sends a request to obtain the second system information. The terminal can also initiate a separate request to obtain another piece of first system information. This scheme provides a new option for obtaining both the second system information and the other first system information.

[0021] In conjunction with the first aspect, in some implementations of the first aspect, the aforementioned change instruction information may be sent in any of the following ways: short message, paging message, or first system information.

[0022] Change indication information is used to indicate changes in the system information broadcast status and / or system information request resources. The message carrying the change indication information can be of various types, such as a short message, a paging message, or first system information, or other system information besides second system information. This scheme provides multiple options for the carrier of change indication information.

[0023] In conjunction with the first aspect, in some implementations of the first aspect, the change instruction information may also include information for indicating the system information broadcast status and / or information for indicating the system information requesting resources.

[0024] When the system information broadcast status and / or system information resource request change, the change indication information can indicate not only the change but also the information of the system information broadcast status and / or system information resource request. This scheme not only facilitates the terminal in obtaining the latest parameters and achieving information synchronization with network devices, but also further reduces signaling overhead and avoids resource waste.

[0025] In conjunction with the first aspect, in certain implementations of the first aspect, the change instruction information is sent under at least one of the following conditions: the first system information is on-demand first system information OD-SIB1; the cell where the terminal is located is a cell that supports on-demand transmission of first system information; or, the second system information is on-demand second system information OD-SIBx.

[0026] In this scenario, changing the instruction information can enable the terminal and network devices to reach a consensus on the broadcast status of system information. This ensures information synchronization between the terminal and network devices without consuming network resources, and helps the terminal accurately determine the request method to obtain the second system information.

[0027] Secondly, a method for obtaining system information is provided, which can be executed by a terminal or by a chip or circuit in the terminal. The method includes: determining a request method for the second system information, wherein the request method is to request the second system information via radio resource control signaling; and initiating a request to obtain the second system information using the aforementioned request method.

[0028] Based on the method for obtaining system information provided in the second aspect, the terminal determines that the request method for obtaining the second system information is through radio resource control signaling. The terminal can directly determine the request method for obtaining the second system information without needing to utilize the first system information. In network energy-saving scenarios, the terminal can obtain the second system information with only one request, further reducing the number of system information requests and thus avoiding energy consumption of network devices.

[0029] In conjunction with the second aspect, in some implementations of the second aspect, the above-mentioned request method is used to initiate a request to obtain second system information, including: initiating a request to obtain second system information under the condition that preset conditions are met, the preset conditions including at least one of the following: the first system information is in a state where it has not been sent by the network device; the first system information is invalid first system information; the first system information is on-demand first system information OD-SIB1; the cell where the terminal is located is a cell that supports on-demand transmission of first system information; the second system information is invalid second system information; the second system information is in a state where it has not been sent by the network device; the second system information is on-demand second system information OD-SIBx; the terminal's request for second system information fails; or, the terminal receives change indication information, the change indication information being used to indicate that the system information broadcast status and / or system information request resources have changed.

[0030] To achieve network energy conservation, a terminal can only initiate a request to obtain information from the second system if the aforementioned preset conditions are met. This restriction can prevent resource waste caused by erroneous or unnecessary requests to obtain information from the second system.

[0031] In conjunction with the second aspect, in some implementations of the second aspect, the aforementioned change instruction information can be sent in any of the following ways: short message, paging message, or first system information.

[0032] In conjunction with the second aspect, in some implementations of the second aspect, the change instruction information may also include information for indicating the system information broadcast status and / or information for indicating the system information requesting resources.

[0033] In conjunction with the second aspect, in some implementations of the second aspect, the change instruction information is sent under at least one of the following conditions: the first system information is on-demand first system information OD-SIB1; the cell where the terminal is located is a cell that supports on-demand transmission of first system information; or, the second system information is on-demand second system information OD-SIBx.

[0034] In conjunction with the second aspect, in some implementations of the second aspect, initiating a request to obtain second system information may also include: initiating a request to obtain first system information and second system information.

[0035] In conjunction with the second aspect, in some implementations of the second aspect, the acquisition request is a wireless resource control system information request, which includes indication information for acquiring first system information and second system information; or, the acquisition request is sent through resources configured by the network device, which are used to indicate the acquisition of first system information and second system information.

[0036] In conjunction with the second aspect, in some implementations of the second aspect, the method for obtaining system information also includes: initiating an acquisition request for obtaining the first system information.

[0037] Furthermore, some of the technical effects of the method for obtaining system information described in the second aspect can be referred to in the first aspect, and will not be repeated here.

[0038] Thirdly, an apparatus for acquiring system information is provided, used to execute the method in any possible implementation of the first or second aspect described above. Specifically, the apparatus includes units / modules for executing the method in any possible implementation of the first or second aspect described above.

[0039] Fourthly, this application provides yet another apparatus for acquiring system information, including a processor coupled to a memory, which can be used to execute instructions in the memory to implement the method in any of the possible implementations of the first or second aspect described above. Optionally, the apparatus for acquiring system information further includes a memory. Optionally, the apparatus for acquiring system information further includes a communication interface, and the processor is coupled to the communication interface.

[0040] In one implementation, the device for acquiring system information is a terminal. When the device for acquiring system information is a terminal, the communication interface can be a transceiver or an input / output interface.

[0041] In another implementation, the device for acquiring system information is a chip configured in the terminal. When the device for acquiring system information is a chip configured in the terminal, the aforementioned communication interface can be an input / output interface.

[0042] Fifthly, a processor is provided, comprising: an input circuit, an output circuit, and a processing circuit. The processing circuit is configured to receive signals through the input circuit and transmit signals through the output circuit, causing the processor to execute the method in any possible implementation of the first or second aspect described above.

[0043] In specific implementation, the processor can be a chip, the input circuit can be an input pin, the output circuit can be an output pin, and the processing circuit can be a transistor, gate circuit, flip-flop, and various logic circuits. The input signal received by the input circuit can be received and input by, for example, but not limited to, a receiver, and the signal output by the output circuit can be output to, for example, but not limited to, a transmitter and transmitted by the transmitter. Furthermore, the input circuit and the output circuit can be the same circuit, which is used as the input circuit and the output circuit at different times. This application does not limit the specific implementation of the processor and various circuits.

[0044] A sixth aspect provides a processing apparatus including a processor and a memory. The processor is configured to read instructions stored in the memory and to receive signals via a receiver and transmit signals via a transmitter to execute the method in any of the possible implementations of the first or second aspect described above.

[0045] Optionally, the processor may be one or more, and the memory may be one or more.

[0046] Optionally, the memory may be integrated with the processor, or the memory may be separated from the processor.

[0047] In specific implementation, the memory can be a non-transitory memory, such as read-only memory (ROM), which can be integrated with the processor on the same chip or set on different chips. The embodiments of this application do not limit the type of memory or the way the memory and processor are set.

[0048] It should be understood that the relevant data interaction process, such as sending indication information, can be the process of outputting indication information from the processor, and receiving capability information can be the process of the processor receiving input capability information. Specifically, the processed output data can be output to the transmitter, and the input data received by the processor can come from the receiver. Here, the transmitter and receiver can be collectively referred to as a transceiver.

[0049] The processing device in the sixth aspect above can be a chip. The processor can be implemented in hardware or software. When implemented in hardware, the processor can be a logic circuit, integrated circuit, etc. When implemented in software, the processor can be a general-purpose processor that reads software code stored in memory. The memory can be integrated into the processor or located outside the processor and exist independently.

[0050] In a seventh aspect, a computer program product is provided, the computer program product comprising: a computer program (also referred to as code or instructions), which, when the computer program is run, causes a computer to perform the method in any possible implementation of the first or second aspect described above.

[0051] Eighthly, a computer-readable storage medium is provided that stores a computer program (also referred to as code or instructions) that, when executed on a computer, causes the computer to perform the methods in any possible implementation of the first or second aspect described above. Attached Figure Description

[0052] Figure 1This application provides a schematic diagram of the structure of a communication system according to an embodiment of the present application.

[0053] Figure 2 A flowchart illustrating the request method for obtaining system information through resources configured on network devices;

[0054] Figure 3 A flowchart illustrating the request method for obtaining system information via radio resource control signaling;

[0055] Figure 4 A flowchart illustrating a method for obtaining system information provided in an embodiment of this application;

[0056] Figure 5 A flowchart illustrating another method for obtaining system information provided in an embodiment of this application;

[0057] Figure 6 A flowchart illustrating another method for obtaining system information provided in an embodiment of this application;

[0058] Figure 7 A flowchart illustrating another method for obtaining system information provided in an embodiment of this application;

[0059] Figure 8 A flowchart illustrating another method for obtaining system information provided in an embodiment of this application;

[0060] Figure 9 A flowchart illustrating another method for obtaining system information provided in an embodiment of this application;

[0061] Figure 10 A schematic block diagram of a device for acquiring system information provided in the embodiments of this application;

[0062] Figure 11 A schematic block diagram of another device for acquiring system information provided in an embodiment of this application. Detailed Implementation

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

[0064] The technical solutions of this application embodiment can be applied to various communication systems, such as narrowband Internet of Things (NB-IoT) systems, wireless fidelity (WiFi) systems, vehicle-to-everything (V2X) communication systems, device-to-device (D2D) communication systems, vehicle-to-everything (V2X) communication systems, 4th generation (4G) mobile communication systems, such as long term evolution (LTE) systems, worldwide interoperability for microwave access (WiMAX) communication systems, 5th generation (5G) mobile communication systems, such as new radio (NR) systems, and future communication systems, etc.

[0065] This application will present various aspects, embodiments, or features relating to systems that may include multiple devices, components, modules, etc. It should be understood and appreciated that individual systems may include additional devices, components, modules, etc., and / or may not include all the devices, components, modules, etc. discussed in conjunction with the accompanying drawings. Furthermore, combinations of these approaches are also possible.

[0066] Furthermore, in the embodiments of this application, words such as "exemplarily" and "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as an "example" in this application should not be construed as being better or more advantageous than other embodiments or designs. Rather, the use of the word "example" is intended to present the concept in a specific manner.

[0067] The network architecture and business scenarios described in the embodiments of this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided in the embodiments of this application. As those skilled in the art will know, with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

[0068] To facilitate understanding of the embodiments of this application, let's first take... Figure 1 The communication system illustrated herein is used as an example to illustrate a communication system applicable to embodiments of this application. For example, Figure 1 This is a schematic diagram of the architecture of a communication system to which the communication method provided in the embodiments of this application is applicable.

[0069] like Figure 1 As shown, the communication system includes terminals and network devices. The terminals and network devices can communicate wirelessly over the air interface.

[0070] In this embodiment of the application, the network device can be any device with wireless transceiver capabilities. Network equipment includes, but is not limited to: evolved Node B (eNB), radio network controller (RNC), Node B (NB), base station controller (BSC), base transceiver station (BTS), home base station (e.g., home evolved Node B, or home Node B, HNB), baseband unit (BBU), access point (AP), wireless relay node, wireless backhaul node, transmission point (TP), or transmission and reception point (TRP) in a wireless fidelity (WiFi) system. It can also be a gNB in ​​a 5G system, such as NR, or a transmission point (TRP or TP), one or a group of antenna panels (including multiple antenna panels) of a base station in a 5G system, or a network node constituting a gNB or transmission point, such as a baseband unit (BBU) or a distributed unit (DU).

[0071] In some deployments, a gNB may include a centralized unit (CU) and a dedicated unit (DU). A gNB may also include an active antenna unit (AAU). The CU implements some of the gNB's functions, and the DU implements others. For example, the CU can handle non-real-time protocols and services, such as implementing the functions of the radio resource control (RRC) layer, the service data adaptation protocol (SDAP) layer, and / or the packet data convergence protocol (PDCP) layer. The DU can handle physical layer protocols and real-time services, such as implementing the functions of the radio link control (RLC) layer, the media access control (MAC) layer, and the physical (PHY) layer. A DU can connect to only one CU or to multiple CUs, while a CU can connect to multiple DUs. Communication between CUs and DUs can be achieved via the F1 interface. The AAU can implement some physical layer processing functions, radio frequency processing, and active antenna-related functions. Since the information from the RRC layer is ultimately delivered to the PHY layer and thus becomes PHY layer information, or is transformed from PHY layer information, in this architecture, higher-level signaling, such as RRC layer signaling, can also be considered as being sent by the DU, or by the DU+AAU.

[0072] It is understood that network devices can be one or more of the following: CU nodes, DU nodes, and AAU nodes. Furthermore, a CU can be classified as a network device in the radio access network (RAN) or as a network device in the core network (CN); this application does not impose any limitations on this.

[0073] Network equipment provides services to cells. Terminals communicate with cells through transmission resources (e.g., frequency domain resources, or spectrum resources) allocated by the network equipment. The cell can belong to a macro base station (e.g., macro eNB or macro gNB) or to a base station corresponding to a small cell. Small cells can include: metro cells, micro cells, pico cells, femto cells, etc. These small cells have the characteristics of small coverage area and low transmission power, and are suitable for providing high-speed data transmission services.

[0074] In the embodiments of this application, the terminal may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent, or user device.

[0075] A terminal can be a device that provides voice / data connectivity to a user, such as a handheld device or in-vehicle device with wireless connectivity. Currently, examples of terminals include: mobile phones, tablets, computers with wireless transceiver capabilities (such as laptops and PDAs), mobile internet devices (MIDs), virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical care, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), handheld devices with wireless communication capabilities, computing devices or other processing devices connected to a wireless modem, in-vehicle devices, wearable devices, terminals in 5G networks, or future evolution of public terrestrial mobile communication networks (PPPoE). Terminals in a land mobile network (PLMN), etc.

[0076] Wearable devices, also known as wearable smart devices, are a general term for devices that utilize wearable technology to intelligently design and develop everyday wearables, such as glasses, gloves, watches, clothing, and shoes. Wearable devices are portable devices worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not merely hardware devices; they achieve powerful functions through software support, data interaction, and cloud interaction. Broadly defined, wearable smart devices include those with comprehensive functions, large sizes, and the ability to perform complete or partial functions without relying on a smartphone, such as smartwatches or smart glasses. They also include devices focused on a specific application function that require the use of other devices, such as smart bracelets and smart jewelry for vital sign monitoring.

[0077] Furthermore, a terminal can also be a terminal in an Internet of Things (IoT) system. IoT is an important component of future information technology development. Its main technical characteristic is connecting objects to networks via communication technologies, thereby realizing an intelligent network that enables human-machine interaction and machine-to-machine interaction. IoT technology can achieve massive connectivity, deep coverage, and low terminal power consumption through technologies such as narrowband (NB).

[0078] In addition, the terminal may also include sensors such as smart printers, train detectors, and gas stations. Its main functions include collecting data (for some terminals), receiving control information and downlink data from network devices, and sending electromagnetic waves to transmit uplink data to network devices.

[0079] It should be noted that the communication method provided in the embodiments of this application can be applied to... Figure 1 The communication between the terminal and the network device shown can be specifically implemented by referring to the following method embodiments, which will not be repeated here.

[0080] It should be noted that the solutions in the embodiments of this application can also be applied to other communication systems, and the corresponding names can be replaced by the names of the corresponding functions in other communication systems.

[0081] It should be understood that Figure 1 This is a simplified diagram for ease of understanding only. The communication system may also include other network devices and / or other terminals. Figure 1 It was not drawn in the middle.

[0082] Below, for ease of understanding, we will first combine... Figure 2 and Figure 3 This section introduces technologies related to on-demand system information.

[0083] Other system information (OSI) refers to system information other than the master information block (MIB) and the first system information (e.g., system information block 1 (SIB1)), such as SIB2, SIB3, etc. For ease of description, it is collectively referred to as second system information (or simply SIBx). Second system information can also be on-demand system information (OD-OSI), meaning the terminal obtains the second system information only when it needs to obtain any one or more system information blocks. This second system information is on-demand second system information (On-demand system information block x, OD-SIBx). Similarly, the first system information can also be on-demand system information, meaning the terminal obtains the first system information only when it needs to obtain it. This first system information is on-demand first system information (On-demand system information block 1, OD-SIB1). It should be noted that obtaining second system information in this application can include obtaining all OSIs or obtaining any one or more system information blocks; this is not limited here.

[0084] The terminal can request second system information using two methods: a first request method and a second request method. The first request method is based on message 1 (MSG1-based), and the second request method is based on message 3 (MSG3-based). In current technology, the first system information is continuously broadcast by network devices, i.e., sent at a fixed period and from a designated location. The terminal can obtain SIB1 based on the period and location, and can determine which request method to use to obtain the second system information based on the configuration in the first system information.

[0085] Specifically, the first request method mentioned above is to request system information by requesting resources through system information configured on the network device. Specifically, the terminal requests resources based on the system information configured on the network side, selects an appropriate random access preamble, and requests system information in a non-broadcast state.

[0086] Figure 2 This is a flowchart illustrating the request method for obtaining system information through resources configured on network devices. The following section combines... Figure 2 The first request method described above will be explained.

[0087] Figure 2This is a flowchart illustrating the first request method, i.e., obtaining system information through resources configured on network devices. For example... Figure 2 As shown, the terminal can select the corresponding random access resources and the corresponding preamble (also known as a preamble sequence) according to the system broadcast configuration to initiate a random access procedure. The first request method may specifically include, for example... Figure 2 The steps shown are as follows:

[0088] S201, the network device sends a main information block, and the terminal receives the main information block accordingly.

[0089] The master information block (MIB) contains the most important basic information. The terminal can only decode the first system information after receiving and successfully decoding the master information block.

[0090] S202, the network device sends the first system information, and the terminal receives the first system information accordingly.

[0091] The first system information can indicate the status of different system information blocks within the second system information, and it can also indicate the requested resources of the second system information. In addition, the first system information also includes information indicating the configuration information requested by the second system information. It is worth noting that the terminal chooses to obtain the second system information through the resources configured by the network device precisely because it recognizes that the configuration information in the first system information contains a field indicating a dedicated configuration resource for the second system information.

[0092] S203, the terminal initiates a random access request to request information about the second system, and the network device receives the random access request accordingly.

[0093] Specifically, after receiving the first system information, the terminal determines that the status of the second system information is non-broadcast based on the indication information of the first system information, and requests to obtain the second system information.

[0094] S204, the network device sends a random access response, and the terminal receives the random access response accordingly.

[0095] S205, the network device sends a system information message containing second system information, and the terminal receives the system information message accordingly.

[0096] The second request method described above involves obtaining the system information required by the terminal through radio resource control (RRC) signaling. Specifically, the terminal first initiates a random access request. After receiving a random access response, the terminal sends an RRC signaling message, which includes the requested second system information whose transmission status is non-broadcast.

[0097] The following is combined with Figure 3 The second request method described above will be explained.

[0098] Figure 3 This is a flowchart illustrating the request method for obtaining system information via radio resource control signaling. Figure 3 The process shown may include the following steps:

[0099] S301, the network device sends a main information block, and the terminal receives the main information block accordingly.

[0100] The master information block (MIB) contains the most important basic information. The terminal can only obtain the first system information after successfully receiving the master information block.

[0101] S302, the network device sends the first system information, and the terminal receives the first system information accordingly.

[0102] The first system information can indicate the status of the second system information. In this case, the first system information does not contain a field indicating a request for configuration resources specific to the second system information. The terminal chooses to obtain the second system information via radio resource control signaling.

[0103] S303, the terminal sends a random access request, and the network device receives the random access request accordingly.

[0104] S304, the network device sends a random access response, and the terminal receives the random access response accordingly.

[0105] S305, the terminal sends message three via RRC signaling to request second system information, and the network device receives message three accordingly.

[0106] It is worth noting that the terminal can only obtain the second system information after determining that the status of the second system information is non-broadcast based on the content of the first system information. Specifically, message three mentioned above includes Radio Resource Control (RRC) signaling, which contains a field indicating the acquisition of the second system information.

[0107] S306, the network device sends message four, and the terminal receives message four accordingly.

[0108] Message four includes the medium access control element (MAC CE). Specifically, after receiving message three, if the terminal obtains the second system information, it sends message four.

[0109] S307, the network device sends system information containing second system information, and the terminal receives the system information accordingly.

[0110] Currently, the two methods mentioned above for terminals to obtain the required second system information are mainly used to request system information other than the main information block and the first system information. Based on the need for green energy conservation, a scheme for non-persistent transmission of the first system information is being researched in network energy conservation projects. Non-persistent transmission means that, compared to persistent transmission, network devices do not send the first system information at every specified location. This scheme allows the network side to send the first system information only after receiving a request from the terminal. In the above scheme, the method by which the network device sends the first system information based on the terminal request can also be called On-Demand First System Information (OD-SIB1). Cells that send the first system information based on the terminal request, i.e., cells that support network energy conservation, can be called network energy-saving (NES) cells. The OD-SIB1 scheme achieves network energy conservation by reducing the number of SIB1 transmissions by the network side.

[0111] Because the terminal needs to operate according to the instructions of the first system information when requesting the second system information, and the first system information is not continuously sent, it cannot directly obtain the first system information when the terminal needs to request the second system information. Therefore, how the terminal determines the method of obtaining the second system information (i.e., whether to use the first request method or the second request method) is a technical problem that urgently needs to be solved. This problem may lead to unnecessary acquisition requests and reduce the success rate of second system information requests.

[0112] In view of this, embodiments of this application provide a method and apparatus for obtaining system information, which can determine the request method of the second system information, avoid unnecessary acquisition requests, improve the success rate of the second system information request, and thus improve system performance.

[0113] The following will combine Figures 4 to 9 This application provides a detailed description of the method for obtaining second system information. It should be understood that the technical solution of this application can be applied to wireless communication systems, for example... Figure 1 The communication system shown. Two communication devices within the wireless communication system can have a wireless communication connection, and one of these two communication devices can correspond to... Figure 1 The terminal shown can also be a chip configured in the terminal; the other communication device of the two communication devices can correspond to Figure 1 The network device shown can also be a chip configured in a network device.

[0114] Without loss of generality, the method for obtaining system information provided in the embodiments of this application will be described in detail using the interaction process between a terminal and a network device as an example.

[0115] Figure 4 This application illustrates a method 400 for obtaining system information, which can be applied to... Figure 1 The communication system shown can also be applied to other communication systems, and the embodiments of this application do not limit this.

[0116] Method 400 includes the following steps:

[0117] S401, the terminal determines the request method for obtaining second system information based on the first system information. The first system information includes request configuration information for the second system information, and the terminal determines the request method for obtaining the second system information based on this request configuration information. The request method includes a first request method and a second request method. The first request method is to request the second system information through request resources configured by the network device or preset request resources, and the second request method is to request the second system information through radio resource control signaling. Specifically, if the request configuration information in the first system contains the si-RequestConfig field, the terminal selects the first request method to obtain the second system information; otherwise, the terminal selects the second request method. In one possible scenario, the request configuration information contains the si-RequestConfig field, in which case the terminal selects the first request method to obtain the second system information. For example, the request configuration information may also contain the si-SchedulingInfo field, which can indicate the sending status of the second system information and the resources required to send the request to obtain the second system information. In another possible scenario, the request configuration information does not contain the si-RequestConfig field, in which case the terminal selects the second request method to obtain the second system information. For example, the terminal may send an RRCSystemInfoRequest carrying a request to obtain the second system information. It should be noted that in the first request method, the second system information is requested through a request resource configured by the network device, which can be understood as a second system information request resource. In the second request method, the second system information is requested through radio resource control signaling, and in this scenario, the resource configured by the network device for requesting the second system information is the public random access resource. Furthermore, the first system information used to determine the above request method can be system information obtained by the terminal before obtaining the second system information, or the first system information stored by the terminal.

[0118] S402, the terminal initiates a request to obtain second system information using the above request method, and the network device receives the request to obtain second system information accordingly.

[0119] In the above method, the terminal determines the request method for obtaining the second system information based on the first system information. Although the first system message is not continuously transmitted, the terminal can actively request the first system message from the network device, or use the first system information stored in the terminal itself to determine the request method for obtaining the second system information. While meeting the network's energy-saving requirements, using the first system message to determine the request method for obtaining the second system information avoids unnecessary requests and improves the success rate of second system information requests, thereby improving system performance.

[0120] It should be noted that the second system information in this application refers to system information other than the first system information. The second system information may include all system information other than the first system information, or it may include one or more system information other than the first system information. This application does not limit this. In addition, "requesting second system information" in this application means requesting at least one block of system information from the second system information.

[0121] In one possible implementation of this application embodiment, the method for the terminal to obtain system information further includes: the terminal initiating a request to obtain first system information and obtaining the first system information.

[0122] Based on the need for green and energy-efficient networks, the first system information is sent in a non-continuous manner. This means that the solution allows network devices to send the first system information only after receiving a request from a terminal. On one hand, this reduces the number of times network devices send the first system information, achieving network energy conservation. On the other hand, by obtaining the first system information in a timely manner, the terminal can understand the status of the second system information, facilitating the determination of the request method for obtaining the second system information and avoiding unnecessary or erroneous requests.

[0123] It is worth noting that the terminal can request the first system information either by requesting the first system information through the request resource configured by the network device or by requesting the first system information through radio resource control signaling. This application embodiment does not impose any restrictions.

[0124] Furthermore, the terminal initiates a request to obtain first system information, including: under the condition that preset conditions are met, the terminal initiates a request to obtain first system information, wherein the preset conditions include at least one of the following:

[0125] 1. The first system information is in a state where it has not been sent by the network device. One possible way to determine whether the first system information is in a state where it has not been sent by the network device is: the terminal does not obtain the first system information at the specified time-frequency domain position where the first system information is sent; or the terminal obtains the first system information but does not obtain the obtained first system information; or the terminal does not obtain the obtained first system information within a first preset time. The first preset time can be determined based on the terminal, or it can be a time agreed upon by the terminal and the network device, or it can be the time when the network device sends the information to the terminal. This application embodiment does not impose any restrictions.

[0126] 2. The first system information is invalid. Specifically, the terminal does not have a valid version of the first system information. For example, the terminal has cleared the stored first system information or the stored first system information is invalid, and the terminal needs to obtain the first system information again.

[0127] 3. The first system information is on-demand first system information (OD-SIB1). Specifically, this means that the terminal obtains the first system information only as needed. That is, in order to meet the needs of network energy saving, network devices will not continuously send the first system information.

[0128] 4. The cell where the terminal is located is a cell that supports on-demand transmission of first system information. Specifically, the network device sends the first system information only after receiving a request from the terminal to obtain it; this cell is called a cell that supports on-demand transmission of first system information. One possible way to determine if the cell where the terminal is located is a cell that supports on-demand transmission of first system information is: the cell or the cell indicated by the neighboring cell indicator of the cell supports on-demand transmission of first system information. Optionally, the first system information transmitted by this cell can be the first system information of this cell itself, or it can be the first system information of other cells, such as the first system information of a neighboring cell.

[0129] 5. The second system information is invalid. Specifically, this means the terminal does not have a valid version of the second system information. For example, the terminal has cleared the stored second system information or the stored second system information is invalid. In order to accurately determine the request method for obtaining the second system information, the terminal needs to re-obtain the first system information.

[0130] 6. The second system information is in a state where it has not been sent by the network device. One possible way to determine whether the second system information is in a state where it has not been sent by the network device is: the terminal does not obtain the second system information at the specified time-frequency domain position where the second system information is sent; the terminal obtains the second system information but does not obtain the obtained second system information; or the terminal does not obtain the obtained second system information within a second preset time. The second preset time can be determined based on the terminal, or it can be a time agreed upon by the terminal and the network device, or it can be the time when the network device sends the information to the terminal. This application embodiment does not impose any restrictions.

[0131] 7. The second system information is on-demand second system information OD-SIBx. On-demand second system information OD-SIBx means that the terminal obtains the second system information as needed; that is, to meet the needs of network energy saving, the network device will not continuously send the second system information. Specifically, the terminal can determine the status of the system information message containing the second system information as a non-broadcast state based on the first system information. For example, the si-BroadcastStatus field indicating the status of the system information message containing the second system information may be displayed as not Broadcating. The system information message may contain one or more OSI system information blocks, which is not limited in this embodiment.

[0132] 8. Terminal fails to request second system information. In one possible scenario, failure to request second system information means random access failed, for example, the terminal sends a random access request but does not receive a random access response from the network device. In another possible scenario, failure to request second system information means random access was successful, the terminal detected a random access response, but did not obtain the requested second system information. Specifically, the method for determining whether the requested second system information was obtained is the same as determining whether the second system information was not sent by the network device.

[0133] 9. The terminal receives a change indication message. The change indication message is used to indicate a change in the system information broadcast status and / or system information resource request status. If the system information broadcast status and / or system information resource request status changes, the terminal receives the change indication message. For example, if the status of the second system information changes from broadcast to non-broadcast, after receiving this indication, the terminal initiates a request to obtain the first system information in order to determine the request method for obtaining the second system information.

[0134] In order to achieve network energy saving while being able to determine the request method for obtaining information from the second system in a timely and accurate manner, the terminal can only initiate a request to obtain information from the first system if the above-mentioned preset conditions are met.

[0135] The above restrictions can avoid resource waste caused by redundant or erroneous first system information retrieval requests.

[0136] To facilitate understanding, the following will be combined with... Figures 5 to 7 The embodiments of this application will be described in detail below.

[0137] For example, another possible system information acquisition method provided in the embodiments of this application is as follows: Figure 5 The method 500 shown includes the following steps:

[0138] S501, the terminal determines that it needs to obtain information from the second system.

[0139] In one possible scenario, the terminal does not have a valid version of the second system information, for example, the terminal has cleared the second system information or the second system information stored on the terminal is invalid, and the terminal needs to obtain the latest second system information.

[0140] S502, the terminal sends a first system information acquisition request, and the network device receives the first system information acquisition request accordingly.

[0141] Since the second system information is in a non-continuous transmission state, in order to determine the request method for obtaining the second system information, the terminal needs to first request the first system information from the network device, and then determine the request method for obtaining the second system information based on the first system information.

[0142] S503, the network device sends the first system information. Correspondingly, the terminal receives the first system information.

[0143] In one possible scenario, the terminal requests configuration information using second system information present in the first system information. The terminal determines the method for obtaining the second system information as the first request method, i.e., requesting the second system information through a resource configured by the network device. In this method, the resource configured by the network device includes the preamble used to request the second system information. In another possible scenario, the terminal requests configuration information using second system information not present in the first system information. The terminal determines the method for obtaining the second system information as the second request method, i.e., requesting the second system information through radio resource control signaling. In this method, the second system information request field in the radio resource control signaling indicates that the terminal needs to obtain the second system information.

[0144] S504, the terminal sends a second system information acquisition request, and the network device receives the second system information acquisition request accordingly.

[0145] Based on the first system information, the terminal can determine the request method for obtaining the second system information, and then send the request for obtaining the second system information based on the request method.

[0146] S505, the terminal sends the second system information, and the network device receives the second system information accordingly.

[0147] In the above process, the terminal first requests the first system information, then determines the method for obtaining the second system information based on the obtained first system information and obtains the second system information. This method ensures that the terminal correctly obtains the system information it needs based on the system information status and resource configuration, reducing unnecessary system information requests and achieving energy saving.

[0148] In another possible implementation of this application embodiment, the method for the terminal to obtain system information may further include: under the condition that preset conditions are met, the terminal uses stored first system information, the preset conditions including at least one of the following: the first system information is in a state where it has not been sent by the network device; the first system information is invalid first system information; the first system information is on-demand first system information OD-SIB1; the cell where the terminal is located is a cell that supports on-demand transmission of first system information; the second system information is invalid second system information OD-SIBx; the second system information is in a state where it has not been sent by the network device; the second system information is on-demand second system information OD-SIBx; the terminal fails to request the second system information; or, the terminal receives change indication information, the change indication information being used to indicate that the system information broadcast status and / or system information request resources have changed; or the first system information stored by the terminal is valid first system information.

[0149] Besides determining the request method for obtaining the second system information based on the reacquired first system information, the terminal can also determine the request method based on its own stored first system information. For example, the terminal can retrieve the first system information from memory. The advantage of this approach is that it can fully utilize the terminal's existing first system information, directly obtaining the second system information with a single request, further reducing the consumption of network device resources, and also providing another option for determining the request method for obtaining the second system information.

[0150] Furthermore, in some scenarios, after receiving a request to obtain second system information, the network device may send the second system information along with another set of first system information, which is a modified version of the first system information. The terminal can use the acquired second set of first system information to update the stored first system information, facilitating the determination of the request method for obtaining second system information in the future.

[0151] For example, another possible method for obtaining system information is as follows: Figure 6 The method 600 shown includes the following steps:

[0152] S601, the terminal determines that it needs to obtain information from the second system.

[0153] In one possible scenario, the terminal does not have a valid version of the second system information, for example, the terminal has cleared the second system information or the second system information stored on the terminal is invalid, and the terminal needs to obtain the latest second system information.

[0154] S602, based on the stored first system information, the terminal determines the request method for obtaining the second system information.

[0155] Based on the first system information stored in the terminal, the terminal can determine the request method for obtaining the second system information, and then send a request to obtain the second system information based on that request method.

[0156] S603, the terminal sends a second system information acquisition request, and the network device receives the second system information acquisition request accordingly.

[0157] Based on the stored first system information, the terminal determines the request method for obtaining the second system information. In one possible scenario, the first system information stored by the terminal contains system information request configuration information, and the terminal determines the method for obtaining the second system information as the first request method, i.e., requesting the second system information through resources configured by the network device. In this method, the resources configured by the network device may contain a preamble used to request the second system information. In another possible scenario, the first system information stored by the terminal does not contain system information request configuration information, and the terminal determines the method for obtaining the second system information as the second request method, requesting the second system information through radio resource control signaling. In this method, the system information request field in the radio resource control signaling indicates that the terminal needs to obtain the second system information.

[0158] S604, the network device sends the first system information, and the terminal receives the first system information accordingly.

[0159] S605, the terminal sends a second system information acquisition request, and the network device receives the second system information acquisition request accordingly.

[0160] S606, the network device sends second system information, and the terminal receives the second system information accordingly.

[0161] In one possible implementation, the terminal does not need to execute S604 and S605 as described above. That is, after the network device receives the second system information acquisition request in S603, it sends the second system information, so that the terminal can acquire the second system information.

[0162] In another possible implementation, the terminal executes S604 but not S605. In this implementation, the terminal can execute both S604 and S606 simultaneously. That is, after receiving the second system information acquisition request from S603, the network device simultaneously sends both the second system information and the first system information. Thus, the terminal can acquire both the second system information and the first system information (referred to as "another first system information" for clarity). After receiving the other first system information, the terminal can update the stored first system information to facilitate determining the request method for acquiring the second system information in the next iteration.

[0163] In another possible implementation, the terminal executes S604 and S605 as described above. After receiving the second system information acquisition request in S603, the network device sends the first system information, thus enabling the terminal to acquire the first system information. Based on this first system information, the terminal can again determine the request method for acquiring the second system information. The terminal executes S605 and initiates the second system information acquisition request again. After receiving the second system information acquisition request in S605, the network device sends the second system information, thus enabling the terminal to acquire the second system information.

[0164] Furthermore, if the request is a radio resource control system information request, such as RRCSystemInfoRequest, the radio resource control system information request includes indication information for obtaining second system information and another first system information; or, if the request is sent through a request resource configured by the network device, the request resource is used to indicate obtaining second system information and another first system information.

[0165] When a terminal initiates requests to acquire first system information and second system information, these requests can be included in a wireless resource control system information request or sent through a request resource configured in the network device. This scheme provides the terminal with different options for acquiring first and second system information in a single transaction.

[0166] For example, another possible method for obtaining system information is as follows: Figure 7 The method 700 shown includes the following steps:

[0167] S701, the terminal determines that it needs to obtain information from the second system.

[0168] In one possible scenario, the terminal does not have a valid version of the secondary system information. For example, the terminal enters a cell without secondary system information, or the terminal has cleared the stored secondary system information, or the stored secondary system information is invalid. The terminal needs to obtain the latest secondary system information.

[0169] S702, based on the stored first system information, the terminal determines the request method for obtaining the second system information.

[0170] Based on the first system information stored in the terminal, the terminal can determine the request method for obtaining the second system information, and then send a request to obtain the second system information based on that request method.

[0171] S703, the terminal sends a request to obtain first system information and second system information, and the network device receives the request accordingly.

[0172] The terminal determines the request method for obtaining second system information based on the stored first system information. In one possible scenario, the first system information stored by the terminal contains system information request configuration information, and the terminal determines that the method for obtaining the second system information is to request the second system information through resources configured by the network device. In this method, the resources configured by the network device contain a preamble used to request the second system information. In another possible scenario, the first system information stored by the terminal does not contain system information request configuration information, and the terminal determines that the method for obtaining the second system information is to request the second system information through Radio Resource Control (RRC) signaling. In this method, the system information request field in the RRC signaling indicates that the terminal needs to obtain the second system information. Besides requesting the second system information, the terminal can also send a request to obtain the first system information to update the first system information stored by the terminal. For example, if the terminal requests the first system information through RRC signaling, the SIB1-request corresponding to the request for the first system information in RRCSystemInfoRequest is true.

[0173] S704, the network device sends first system information and second system information, and the terminal receives the first system information and second system information accordingly.

[0174] The terminal initiating a request to obtain second system information may further include: the terminal initiating requests to obtain both first and second system information. In one possible implementation, the terminal includes a request to obtain first system information in the request information for the second system information. The advantage of this approach is that it can obtain both types of system information at once. The terminal can not only receive the required second system information but also obtain and store another piece of first system information, achieving information synchronization with network devices and facilitating the determination of the request method for obtaining second system information in the future.

[0175] In addition, methods for obtaining system information may also include: initiating a request to obtain another first system information.

[0176] The terminal determines the request method for obtaining the second system information based on its stored first system information and sends a request to obtain the second system information. The terminal can also initiate another request to obtain the first system information, thus obtaining another piece of first system information. This scheme provides a new option for obtaining both the second system information and another piece of first system information.

[0177] It is worth noting that the above change instruction information can be sent in any of the following ways: SMS, paging message, or first system information.

[0178] Change indication information is used to indicate changes in the system information broadcast status and / or system information request resources. The message carrying the change indication information can be of various types, such as a short message, a paging message, or first system information, or other system information besides second system information. This scheme provides multiple options for the carrier of change indication information.

[0179] Optionally, the change instruction information may also include information for indicating the system information broadcast status and / or information for indicating the system information requesting resources.

[0180] When the system information broadcast status and / or system information resource request change, the change indication information can indicate not only the change but also the information of the system information broadcast status and / or system information resource request. This scheme not only facilitates the terminal in obtaining the latest parameters and achieving information synchronization with network devices, but also further reduces signaling overhead and avoids resource waste.

[0181] For example, network devices can send updated system information broadcast status and / or system information request resources in real time. Terminals can determine the request method for requesting second system information based on the latest system information broadcast status and / or system information request resources, thereby reducing network energy consumption.

[0182] In addition, the change instruction information is sent under at least one of the following conditions: the first system information is on-demand first system information OD-SIB1; the cell where the terminal is located is a cell that supports on-demand transmission of first system information; or, the second system information is on-demand second system information OD-SIBx.

[0183] In this scenario, changing the instruction information can enable the terminal and network devices to reach a consensus on the broadcast status of system information. This ensures information synchronization between the terminal and network devices without consuming network resources, and helps the terminal accurately determine the request method to obtain the second system information.

[0184] This application embodiment also provides a method 800 for obtaining system information, which can be applied to... Figure 1 The communication system shown can also be applied to other communication systems, and the embodiments of this application do not limit this.

[0185] Method 800 includes the following steps:

[0186] S801, the terminal determines the request method for obtaining information from the second system.

[0187] In this method, the request is made via radio resource control signaling to request the second system information. It is worth noting that even if the first system information indicates a request for the second system information via resources configured by the network device—that is, if the first system information includes configuration information for requesting the second system information—the terminal still uses the aforementioned method.

[0188] S802, the terminal initiates a request to obtain second system information using the above request method.

[0189] In this solution, the terminal can directly determine the request method for obtaining the second system information without needing to utilize the first system information. In network energy-saving scenarios, the terminal can obtain the second system information with only one request, further reducing the number of system information requests and thus avoiding energy consumption of network devices.

[0190] Accordingly, the terminal initiates a request to obtain the second system information using the above-mentioned request method, including: under the condition that preset conditions are met, the terminal initiates a request to obtain the second system information, the preset conditions including at least one of the following: the first system information is in a state where it has not been sent by the network device; the first system information is invalid first system information; the first system information is on-demand first system information OD-SIB1; the cell where the terminal is located is a cell that supports on-demand transmission of the first system information; the second system information is invalid second system information; the second system information is in a state where it has not been sent by the network device; the second system information is on-demand second system information OD-SIBx; the terminal's request for the second system information fails; the terminal receives change indication information, the change indication information being used to indicate that the system information broadcast status and / or the system information request resource has changed.

[0191] To achieve network energy conservation, a terminal can only initiate a request to obtain information from the second system if the aforementioned preset conditions are met. This restriction can prevent resource waste caused by erroneous or unnecessary requests to obtain information from the second system.

[0192] For example, another possible method for obtaining system information is as follows: Figure 9 The method 900 shown includes the following steps:

[0193] S901, the terminal needs to obtain information from the second system.

[0194] In one possible scenario, the terminal does not have a valid version of the second system information, for example, if the terminal has cleared the second system information or the stored second system information is invalid. In this case, the terminal needs to obtain the latest second system information. In another possible scenario, the system information message containing the second system information is in a non-broadcast state or the second system information has not been sent by the network device. In this case, the terminal also needs to obtain the latest second system information.

[0195] In S902, the terminal sends a second system information acquisition request via radio resource control (RRC) signaling, or the terminal sends both a first system information acquisition request and a second system information acquisition request. Correspondingly, the network device receives the second system information acquisition request, or the network device receives both the first system information acquisition request and the second system information acquisition request.

[0196] In this system information acquisition scenario, the terminal requests second system information via Radio Resource Control (RRC) signaling. When the terminal obtains second system information via RRC signaling, the system information request field in the RRC signaling indicates that the terminal needs to request the second system information or a portion of the system information block within the second system information; alternatively, the system information request field in the RRC signaling indicates that the terminal needs to request both the first and second system information. For example, if the first system information request field in the above-mentioned system information request field indicates true, the terminal obtains both the first and second system information; otherwise, the terminal only obtains the first system information.

[0197] S903, the network device sends second system information, or the network device sends first system information and second system information, and correspondingly, the terminal receives the second system information, or the terminal receives first system information and second system information.

[0198] The above solution reduces the number of system information requests by obtaining the second system information only once, thus avoiding network energy consumption. Furthermore, in some network energy-saving scenarios, requesting the second system information via radio resource control signaling avoids obtaining incorrect information compared to requesting second system information through network device configuration resources.

[0199] Change instructions can be sent in any of the following ways: short message, paging massage, or first system information.

[0200] Furthermore, the change instruction information may also include information for indicating the system information broadcast status and / or information for indicating the system information requesting resources.

[0201] In addition, the change instruction information is sent under at least one of the following conditions: the first system information is on-demand first system information OD-SIB1; the cell where the terminal is located is a cell that supports on-demand transmission of first system information; or, the second system information is on-demand second system information OD-SIBx.

[0202] Accordingly, initiating a request to obtain information from the second system may also include: initiating a request to obtain information from the first system and information from the second system.

[0203] Furthermore, the acquisition request is a wireless resource control system information request, which includes indication information for acquiring first system information and second system information; or, the acquisition request is sent through resources configured by the network device, which are used to indicate the acquisition of first system information and second system information.

[0204] In addition, methods for obtaining system information include: initiating a request to obtain first system information.

[0205] Furthermore, some of the technical effects of the second method for obtaining system information can be referred to the technical effects of the first method for obtaining system information, and will not be repeated here.

[0206] The above text combines Figures 1 to 9 The method for obtaining system information according to embodiments of this application is described in detail below. Figure 10 and Figure 11 This application describes in detail the apparatus for obtaining system information according to embodiments of the present application.

[0207] Figure 10 An apparatus 1000 for acquiring system information according to an embodiment of this application is shown. The apparatus 1000 includes a processing unit 1010 and a transceiver unit 1020.

[0208] In one possible implementation, the device 1000 is used to execute the steps / processes corresponding to the terminal in the method 400 described above.

[0209] The processing unit 1010 is configured to: determine a request method for the second system information based on the first system information, wherein the first system information includes request configuration information for the second system information, the first system information is first system information obtained by the terminal before obtaining the second system information, or the first system information is first system information stored by the terminal, and the request method includes a first request method and a second request method, wherein the first request method is a method of requesting the second system information through system information request resources, and the second request method is a method of requesting the second system information through radio resource control signaling; the transceiver unit 1020 is configured to: initiate a request to obtain the second system information using the request method.

[0210] Optionally, the transceiver unit 1020 is further configured to: initiate a request to obtain the first system information, and obtain the first system information.

[0211] Optionally, the transceiver unit 1020 is further configured to: initiate a request to obtain the first system information under preset conditions, wherein the preset conditions include at least one of the following: the first system information is in a state where it has not been sent by the network device; the first system information is invalid first system information; the first system information is on-demand first system information OD-SIB1; the cell where the terminal is located is a cell that supports on-demand transmission of the first system information; the second system information is invalid second system information; the second system information is in a state where it has not been sent by the network device; the second system information is on-demand second system information OD-SIBx; the terminal's request for the second system information fails; or, the terminal receives change indication information, wherein the change indication information is used to indicate that the system information broadcast status and / or system information request resources have changed.

[0212] Optionally, under preset conditions, the first system information is the first system information stored by the terminal. The preset conditions include at least one of the following: the first system information is in a state where it has not been sent by the network device; the first system information is invalid; the first system information is on-demand first system information OD-SIB1; the cell where the terminal is located is a cell that supports on-demand transmission of the first system information; the second system information is invalid; the second system information is in a state where it has not been sent by the network device; the second system information is on-demand second system information OD-SIBx; the terminal's request for the second system information fails; or, the terminal receives change indication information, which is used to indicate that the system information broadcast status and / or system information request resources have changed.

[0213] Optionally, the transceiver unit 1020 is used to: initiate a request to obtain the first system information and the second system information.

[0214] Optionally, the acquisition request is a wireless resource control system information request, which includes indication information for acquiring first system information and second system information; or, the acquisition request is sent through resources configured by the network device, which are used to indicate the acquisition of first system information and second system information.

[0215] Optionally, the transceiver unit 1020 is used to: initiate a request to obtain first system information.

[0216] Optionally, the change instruction information may be sent via any of the following methods: short message, paging message, or the first system information.

[0217] Optionally, the change indication information includes information for indicating the broadcast status of the system information and / or information for indicating that the system information requests resources.

[0218] Optionally, the change instruction information is sent under at least one of the following conditions: the first system information is on-demand first system information OD-SIB1; the cell where the terminal is located is a cell that supports on-demand transmission of the first system information; or, the second system information is on-demand second system information OD-SIBx.

[0219] In another possible implementation, the device 1000 is used to execute the steps / processes corresponding to the terminal in the method 800 described above.

[0220] The processing unit 1010 is configured to: determine the request method for the second system information, wherein the request method is to request the second system information via radio resource control signaling; the transceiver unit 1020 is configured to: initiate a request to obtain the second system information using the request method.

[0221] Optionally, the transceiver unit 1020 is further configured to: initiate a request to obtain the second system information under preset conditions, wherein the preset conditions include at least one of the following: the first system information is in a state where it has not been sent by the network device; the first system information is invalid first system information; the first system information is on-demand first system information OD-SIB1; the cell where the terminal is located is a cell that supports on-demand transmission of the first system information; the second system information is invalid second system information; the second system information is in a state where it has not been sent by the network device; the second system information is on-demand second system information OD-SIBx; the terminal's request for the second system information fails; the terminal receives change indication information, wherein the change indication information is used to indicate that the system information broadcast status and / or system information request resources have changed.

[0222] Optionally, the change instruction information may be sent via any of the following methods: short message, paging message, or the first system information.

[0223] Optionally, the change indication information includes information for indicating the broadcast status of the system information and / or information for indicating that the system information requests resources.

[0224] Optionally, the change instruction information is sent under at least one of the following conditions: the first system information is on-demand first system information OD-SIB1; the cell where the terminal is located is a cell that supports on-demand transmission of the first system information; or, the second system information is on-demand second system information OD-SIBx.

[0225] Optionally, the transceiver unit 1020 is further configured to: initiate a request to obtain the first system information and the second system information.

[0226] Optionally, the acquisition request is a wireless resource control system information request, which includes indication information for acquiring the first system information and the second system information; or, the acquisition request is sent through resources configured by the network device, which are used to indicate the acquisition of the first system information and the second system information.

[0227] Optionally, the transceiver unit 1020 is also used to: initiate a request to obtain first system information.

[0228] It should be understood that the device 1000 here is embodied in the form of a functional unit. The term "unit" here can refer to an application-specific integrated circuit (ASIC), electronic circuitry, a processor (e.g., a shared processor, a proprietary processor, or a group processor, etc.) and memory for executing one or more software or firmware programs, integrated logic circuitry, and / or other suitable components supporting the described functions. In an alternative example, those skilled in the art will understand that the device 1000 can specifically be a terminal as described in the above embodiments. The device 1000 can be used to execute the various processes and / or steps corresponding to the terminal in the above method embodiments; to avoid repetition, these will not be described further here.

[0229] The apparatus 1000 of each of the above schemes has the function of implementing the corresponding steps executed by the terminal in the above methods; the function can be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions. For example, the transceiver unit can be replaced by a receiver and a transmitter, and other units, such as the processing unit, can be replaced by a processor, which respectively executes the transceiver operations and related processing operations in each method embodiment.

[0230] In the embodiments of this application, Figure 10 The device 1000 can also be a chip or a chip system, such as a system on a chip (SoC). Correspondingly, the transceiver unit 1010 can be the transceiver circuit of the chip, which is not limited here.

[0231] Figure 11 Another apparatus 1100 for acquiring system information, provided in an embodiment of this application, is illustrated. The apparatus 1100 includes a processor 1110, a transceiver 1120, and a memory 1130. The processor 1110, transceiver 1120, and memory 1130 communicate with each other via an internal connection path. The memory 1130 stores instructions, and the processor 1110 executes the instructions stored in the memory 1130 to control the transceiver 1120 to transmit and / or receive signals.

[0232] It should be understood that device 1100 may specifically be the terminal in the above embodiments, and may be used to execute the various steps and / or processes corresponding to the terminal in the above method embodiments. Optionally, the memory 1130 may include read-only memory and random access memory, and provide instructions and data to the processor. A portion of the memory may also include non-volatile random access memory. For example, the memory may also store device type information. The processor 1110 may be used to execute instructions stored in the memory, and when the processor 1110 executes instructions stored in the memory, the processor 1110 is used to execute the various steps and / or processes of the above method embodiments corresponding to the terminal. The transceiver 1120 may include a transmitter and a receiver, the transmitter may be used to implement the various steps and / or processes corresponding to the transceiver for performing the sending action, and the receiver may be used to implement the various steps and / or processes corresponding to the transceiver for performing the receiving action.

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

[0234] In implementation, each step of the above method can be completed by integrated logic circuits in the processor's hardware or by instructions in software. The steps of the method disclosed in the embodiments of this application can be directly manifested as execution by a hardware processor, or as a combination of hardware and software units within the processor. The software units can reside in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. This storage medium is located in memory, and the processor executes the instructions in the memory, combining them with its hardware to complete the steps of the above method. To avoid repetition, detailed descriptions are omitted here.

[0235] This application also provides a computer-readable storage medium for storing a computer program for implementing the methods corresponding to the terminal in the above embodiments.

[0236] This application also provides a computer program product, which includes a computer program (also referred to as code or instructions) that, when run on a computer, enables the computer to execute the methods corresponding to the terminal shown in the above embodiments.

[0237] Those skilled in the art will recognize that the method steps and units described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the steps and components of each embodiment have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0238] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0239] In the embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the couplings or direct couplings or communication connections shown or discussed may be indirect couplings or communication connections through some interfaces, apparatuses, or units, or they may be electrical, mechanical, or other forms of connection.

[0240] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of the embodiments of this application, depending on actual needs.

[0241] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0242] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0243] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for acquiring system information, characterized in that, include: Based on the first system information, a request method for obtaining the second system information is determined. The first system information includes request configuration information for the second system information. The first system information is either the first system information obtained by the terminal before obtaining the second system information, or the first system information is the first system information stored by the terminal. The request method includes a first request method and a second request method. The first request method is to request the second system information by requesting resources through system information, and the second request method is to request the second system information through radio resource control signaling. Using the aforementioned request method, a request to obtain information from the second system is initiated.

2. The method according to claim 1, characterized in that, Before initiating the second system information acquisition request, the method further includes: Initiate a request to obtain the first system information, and obtain the first system information.

3. The method according to claim 2, characterized in that, The step of initiating the request to obtain the first system information includes: Under certain preset conditions, a request to obtain the first system information is initiated, wherein the preset conditions include at least one of the following: The first system information is in a state where it has not been sent by the network device; The first system information is invalid. The first system information is the on-demand first system information OD-SIB1; The cell where the terminal is located is a cell that supports the on-demand transmission of information by the first system; The second system information is invalid. The second system information is in a state where it has not been sent by the network device; The second system information is the on-demand second system information OD-SIBx; The terminal's request for the second system information failed; or... The terminal receives a change indication information, which is used to indicate that the system information broadcast status and / or system information request resource have changed.

4. The method according to claim 1, characterized in that, Under certain preset conditions, the first system information is the first system information stored in the terminal, and the preset conditions include at least one of the following: The first system information is in a state where it has not been sent by the network device; The first system information is invalid. The first system information is the on-demand first system information OD-SIB1; The cell where the terminal is located is a cell that supports the on-demand transmission of information by the first system; The second system information is invalid. The second system information is in a state where it has not been sent by the network device; The second system information is the on-demand second system information OD-SIBx; The terminal's request for the second system information failed; or... The terminal receives a change indication information, which is used to indicate that the system information broadcast status and / or system information request resource have changed.

5. The method according to claim 4, characterized in that, The step of initiating the request to obtain the second system information includes: Initiate a request to obtain first system information and second system information, wherein the request is used to obtain the second system information and to obtain the first system information again.

6. The method according to claim 5, characterized in that, The acquisition request is a wireless resource control system information request, which includes indication information for acquiring first system information and second system information; or... The request is sent through a resource configured in the network device, which is used to indicate the acquisition of the first system information and the second system information.

7. The method according to claim 4, characterized in that, The method further includes: Initiate a request to obtain information from the first system.

8. The method according to any one of claims 3-7, characterized in that, The change instruction information is sent in any of the following ways: Short message, paging message, or information from the first system.

9. The method according to any one of claims 3-8, characterized in that, The change indication information includes information for indicating the broadcast status of the system information and / or information for indicating that the system information requests resources.

10. The method according to any one of claims 3-9, characterized in that, The change instruction information is sent if at least one of the following conditions is met: The first system information is the on-demand first system information OD-SIB1; The terminal is located in a cell that supports on-demand information transmission from the first system; or... The second system information is the on-demand second system information OD-SIBx.

11. A method for acquiring system information, characterized in that, include: The request method for the second system information is determined, wherein the request method is to request the second system information via radio resource control signaling; Using the aforementioned request method, a request to obtain information from the second system is initiated.

12. The method according to claim 11, characterized in that, The step of initiating a request to obtain the second system information using the aforementioned request method includes: Under certain preset conditions, a request to obtain the second system information is initiated, wherein the preset conditions include at least one of the following: The first system information is in a state where it has not been sent by network devices; The first system information is invalid. The first system information is the on-demand first system information OD-SIB1; The cell where the terminal is located is a cell that supports the on-demand transmission of information by the first system; The second system information is invalid. The second system information is in a state where it has not been sent by the network device; The second system information is the on-demand second system information OD-SIBx; The terminal's request for the second system information failed. The terminal receives a change indication information, which is used to indicate that the system information broadcast status and / or system information request resource have changed.

13. The method according to claim 12, characterized in that, The change instruction information is sent in any of the following ways: Short message, paging message, or information from the first system.

14. The method according to claim 12 or 13, characterized in that, The change indication information includes information for indicating the broadcast status of the system information and / or information for indicating that the system information requests resources.

15. The method according to any one of claims 12-14, characterized in that, The change instruction information is sent if at least one of the following conditions is met: The first system information is the on-demand first system information OD-SIB1; The terminal is located in a cell that supports on-demand information transmission from the first system; or... The second system information is the on-demand second system information OD-SIBx.

16. The method according to any one of claims 11-15, characterized in that, The step of initiating the request to obtain the second system information includes: Initiate a request to obtain information from the first system and information from the second system.

17. The method according to claim 16, characterized in that, The acquisition request is a wireless resource control system information request, which includes indication information for acquiring the first system information and the second system information; or... The request is sent through a resource configured in the network device, which is used to indicate the acquisition of the first system information and the second system information.

18. The method according to any one of claims 11-15, characterized in that, The method further includes: Initiate a request to obtain information from the first system.

19. A device for acquiring system information, characterized in that, include: Units for implementing the method according to any one of claims 1 to 18.

20. A device for acquiring system information, characterized in that, include: A processor coupled to a memory for storing programs or instructions that, when executed by the processor, cause the apparatus to perform the method of acquiring system information as claimed in any one of claims 1 to 18.

21. A computer-readable storage medium, characterized in that, The system contains a computer program or instructions that, when executed, cause a computer to perform the method of acquiring system information as described in any one of claims 1 to 18.

22. A computer program product, characterized in that, The computer program product includes computer program code, which, when run on a computer, causes the computer to implement the method for obtaining system information as described in any one of claims 1 to 18.

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