Method for requesting system information, terminal, network device, and storage medium

Abstract

The present disclosure relates to a method for requesting system information, a terminal, a network device, and a storage medium. The method comprises: sending first request information to a network device, wherein the first request information is used for requesting system information (SI) other than a system information block (SIB)1, and a terminal camps on an on-demand SIB1 cell or the SIB1 is not in a sent state. In the method of the present disclosure, when a terminal camps on an on-demand SIB1 cell, or the SIB1 is in an unsent state, the terminal may initiate an SI request to a network device by means of first request information, to obtain other required SI in a timely manner, thereby improving communication efficiency.

Description

Methods, terminals, network devices, and storage media for requesting system information Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to a method, terminal, network device, and storage medium for requesting system information. Background Technology

[0002] In New Radio (NR), to achieve energy savings on the network side and reduce the number of System Information (SI) messages broadcast by default by base stations, request-based system broadcast transmission was introduced. For example, in addition to the Master Information Block (MIB) and System Information Block 1 (SIB1), other SIBs or other SIs (OSIs) can be requested on demand. For another example, release 19 (R19) supports on-demand SIB1.

[0003] Summary of the Invention

[0004] Before requesting other SIs, the terminal needs to know the broadcast status of other SIs based on SIB1. If SIB1 is on-demand, the terminal may not be able to request SIs in a timely manner.

[0005] This disclosure provides a method for requesting system information, a terminal, a network device, and a storage medium.

[0006] In a first aspect, embodiments of this disclosure provide a method for requesting system information, executed by a terminal, the method comprising:

[0007] Send a first request message to the network device. The first request message is used to request other system information SIs other than system information block SIB1. The terminal is camped in the cell that requests SIB1 on demand or the SIB1 is not in the sending state.

[0008] Secondly, embodiments of this disclosure provide a method for requesting system information, executed by a network device, the method comprising:

[0009] The terminal receives a first request message sent by the terminal, the first request message being used to request other system information SIs besides system information block SIB1; wherein the terminal is camped in a cell that requests SIB1 on demand or the SIB1 is not in a sending state.

[0010] Thirdly, embodiments of this disclosure provide a terminal, including:

[0011] The transceiver module is used to send a first request message to the network device. The first request message is used to request other system information SIs besides system information block SIB1. The terminal is camped in the cell that requests SIB1 on demand or the SIB1 is not in the transmission state.

[0012] Fourthly, embodiments of this disclosure provide a network device, including:

[0013] The transceiver module is used to receive a first request information sent by the terminal, the first request information being used to request other system information SIs besides system information block SIB1; wherein, the terminal is camped in a cell that requests SIB1 on demand or the SIB1 is not in a transmitting state.

[0014] Fifthly, embodiments of this disclosure provide a terminal, including:

[0015] One or more processors;

[0016] The terminal is configured to implement the method described in the first aspect.

[0017] Sixthly, embodiments of this disclosure provide a network device, including:

[0018] One or more processors;

[0019] The network device is configured to implement the method described in the second aspect.

[0020] In a seventh aspect, embodiments of this disclosure provide a communication system, including a terminal and a network device, wherein,

[0021] The terminal is configured to implement the method as described in the first aspect;

[0022] The network device is configured to implement the method as described in the second aspect.

[0023] Eighthly, embodiments of this disclosure provide a storage medium storing instructions, wherein...

[0024] When the instructions are executed on the communication device, the communication device causes the communication device to perform the method as described in the first aspect or the second aspect.

[0025] Ninthly, embodiments of this disclosure provide a program product, wherein,

[0026] When the program product is executed by a communication device, the communication device performs the method as described in the first aspect or the second aspect.

[0027] In this embodiment of the disclosure, when the terminal is camped in the on-demand SIB1 cell, or when SIB1 is in a non-transmitting state, the terminal can initiate an SI request to the network device through the first request information, so as to obtain other required SIs in a timely manner and improve communication efficiency. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings required for the description of the embodiments are introduced below. The following drawings are only some embodiments of this disclosure and do not impose specific limitations on the protection scope of this disclosure.

[0029] Figure 1a is an exemplary schematic diagram of the architecture of a communication system provided according to an embodiment of the present disclosure;

[0030] Figure 1b is a schematic diagram of system information provided according to an embodiment of the present disclosure;

[0031] Figures 1c to 1e are multiplexing diagrams of SSB and RMSI control resource sets provided according to embodiments of the present disclosure;

[0032] Figure 1f is a schematic diagram of an SI request provided according to an embodiment of the present disclosure;

[0033] Figures 2a to 2c are exemplary interactive schematic diagrams of the method provided according to embodiments of the present disclosure;

[0034] Figures 3a to 3c are exemplary flowcharts of a method provided according to embodiments of the present disclosure;

[0035] Figures 4a to 4c are exemplary flowcharts of a method provided according to embodiments of the present disclosure;

[0036] Figure 5a is a schematic diagram of the structure of a device according to an embodiment of the present disclosure;

[0037] Figure 5b is a schematic diagram of the structure of a device according to an embodiment of the present disclosure;

[0038] Figure 6a is a schematic diagram of a communication device according to an embodiment of the present disclosure;

[0039] Figure 6b is a schematic diagram of a communication device according to an embodiment of the present disclosure. Detailed Implementation

[0040] This disclosure provides a method for requesting system information, a terminal, a network device, and a storage medium.

[0041] In a first aspect, embodiments of this disclosure provide a method for requesting system information, executed by a terminal, the method comprising:

[0042] Send a first request message to the network device. The first request message is used to request other system information SIs other than system information block SIB1. The terminal is camped in the cell that requests SIB1 on demand or SIB1 is not in the sending state.

[0043] In the above embodiments, when the terminal is camped in the on-demand SIB1 cell, or when SIB1 is in a non-transmitting state, the terminal can initiate an SI request to the network device through the first request information to obtain other required SIs in a timely manner and improve communication efficiency.

[0044] In conjunction with the embodiments of the first aspect, in some embodiments, the terminal has a valid SIB1 version.

[0045] In the above embodiments, the terminal has a valid SIB1 version. However, this valid SIB1 version may not be able to promptly indicate changes in the broadcast status of other SIs. In this scenario, the terminal can promptly request other SIs through the first request information.

[0046] In conjunction with the embodiments of the first aspect, in some embodiments, the terminal defaults to the broadcast status of other SIs being not broadcast.

[0047] In the above embodiments, the terminal can assume the broadcast status of other SIs and thus promptly initiate the first request information, without having to request SIB1 to obtain the broadcast status, thereby saving the terminal's signaling resources.

[0048] In conjunction with the embodiments of the first aspect, in some embodiments, the method further includes: receiving indication information sent by a network device, the indication information being used to indicate the broadcast status of other SIs; wherein the first request information is sent when the broadcast status is indicated as not broadcasting.

[0049] In the above embodiments, the terminal can learn the broadcast status of other SIs based on the indication information of the network device, and then promptly request other SIs when the indication information indicates that the broadcast status is not broadcast.

[0050] In conjunction with the embodiments of the first aspect, in some embodiments, the method further includes: sending a second request message to a network device, the second request message being used to request a new SIB1; receiving the new SIB1 sent by the network device; wherein the indication message is sent through the new SIB1.

[0051] In the above embodiments, before requesting other SIs, the terminal can request a new SIB1 regardless of whether a valid SIB1 version exists, in order to obtain an accurate broadcast status and thus request other SIs in a timely manner, thereby improving communication efficiency.

[0052] In conjunction with the embodiments of the first aspect, in some embodiments, the indication information is sent via paging downlink control information (DCI).

[0053] In the above embodiments, the terminal can learn about the broadcast status of other SIs based on the paging DCI issued by the network device and make SI requests in a timely manner, thereby avoiding the need to request a new SIB1 and saving signaling resources.

[0054] In conjunction with the embodiments of the first aspect, in some embodiments, the first request information is sent based on a first message (Message1, MSG1) or based on a third message MSG3.

[0055] In the above embodiments, the terminal can request other SIs based on MSG1 or MSG3.

[0056] In conjunction with the embodiments of the first aspect, in some embodiments, when the first request information is sent based on a default broadcast state, the first request information is sent based on MSG1; or, when the first request information is sent based on an indication information, the first request information is sent based on MSG3.

[0057] In the above embodiments, the terminal can combine different methods of requesting other SIs to determine the message on which the request to other SIs is based, thereby improving request efficiency.

[0058] Secondly, embodiments of this disclosure provide a method for requesting system information, executed by a network device, the method comprising:

[0059] The terminal receives a first request message sent by the terminal, the first request message being used to request other system information SIs besides system information block SIB1; wherein the terminal is camped in a cell that requests SIB1 on demand or the SIB1 is not in a sending state.

[0060] In conjunction with the embodiments of the second aspect, in some embodiments, the method further includes:

[0061] Send indication information to the terminal, the indication information being used to indicate the broadcast status of other SIs; wherein, the first request information is sent when the broadcast status is not broadcast.

[0062] In conjunction with the embodiments of the second aspect, in some embodiments, the method further includes:

[0063] The receiving terminal sends a second request message, which is used to request a new SIB1.

[0064] Send a new SIB1 to the terminal;

[0065] The instruction information is sent through the new SIB1.

[0066] In conjunction with the embodiments of the second aspect, in some embodiments, the indication information is sent via paging downlink control information (DCI).

[0067] In conjunction with the embodiments of the second aspect, in some embodiments, the first request information is sent based on a first message MSG1 or based on a third message MSG3.

[0068] In conjunction with the embodiments of the second aspect, in some embodiments, when sending the first request information based on the indication information, the first request information is sent based on MSG3.

[0069] Thirdly, embodiments of this disclosure provide a terminal, including:

[0070] The transceiver module is used to send a first request message to the network device. The first request message is used to request other system information SIs besides system information block SIB1. The terminal is camped in the cell that requests SIB1 on demand or the SIB1 is not in the transmission state.

[0071] Fourthly, embodiments of this disclosure provide a network device, including:

[0072] The transceiver module is used to receive a first request information sent by the terminal, the first request information being used to request other system information SIs besides system information block SIB1; wherein, the terminal is camped in a cell that requests SIB1 on demand or the SIB1 is not in a transmitting state.

[0073] Fifthly, embodiments of this disclosure provide a terminal, including:

[0074] One or more processors;

[0075] The terminal is configured to implement the method described in the first aspect.

[0076] Sixthly, embodiments of this disclosure provide a network device, including:

[0077] One or more processors;

[0078] The network device is configured to implement the method described in the second aspect.

[0079] In a seventh aspect, embodiments of this disclosure provide a communication system, including a terminal and a network device, wherein,

[0080] The terminal is configured to implement the method as described in the first aspect;

[0081] The network device is configured to implement the method as described in the second aspect.

[0082] Eighthly, embodiments of this disclosure provide a storage medium storing instructions, wherein...

[0083] When the instructions are executed on the communication device, the communication device causes the communication device to perform the method as described in the first aspect or the second aspect.

[0084] Ninthly, embodiments of this disclosure provide a program product, wherein,

[0085] When the program product is executed by a communication device, the communication device performs the method as described in the first aspect or the second aspect.

[0086] In a tenth aspect, embodiments of this disclosure provide a computer program that, when run on a computer, causes the computer to perform the methods described in alternative implementations of the first and second aspects.

[0087] Eleventhly, embodiments of this disclosure provide a chip or chip system. The chip or chip system includes processing circuitry configured to perform the methods described according to optional implementations of the first and second aspects above.

[0088] It is understood that the aforementioned terminals, network devices, communication systems, storage media, program products, computer programs, chips, or chip systems are all used to execute the methods proposed in the embodiments of this disclosure. Therefore, the beneficial effects they can achieve can be referred to the beneficial effects in the corresponding methods, and will not be repeated here.

[0089] This disclosure is not exhaustive, but merely illustrative of some embodiments, and is not intended to limit the scope of protection of this disclosure. Unless otherwise specified, each step in a particular embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a particular embodiment can also be implemented as an independent embodiment, and the order of the steps in a particular embodiment can be arbitrarily interchanged. Furthermore, the optional implementation methods in a particular embodiment can be arbitrarily combined; moreover, the embodiments can be arbitrarily combined, for example, some or all steps of different embodiments can be arbitrarily combined, and a particular embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0090] In each of the disclosed embodiments, unless otherwise specified or in case of logical conflict, the terminology and / or descriptions of the embodiments are consistent and can be referenced by each other. Technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships.

[0091] The terminology used in the embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to limit the scope of this disclosure.

[0092] In this embodiment of the disclosure, unless otherwise stated, elements expressed in the singular form, such as "a," "an," "the," "the," "the," "the," "the," "the," "this," etc., can mean "one and only one," or "one or more," "at least one," etc. For example, when using articles such as "a," "an," "the," etc. in translation, the noun following the article can be understood as either a singular expression or a plural expression.

[0093] In the embodiments disclosed herein, "multiple" refers to two or more.

[0094] In some embodiments, the terms “at least one of”, “one or more”, “a plurality of”, “multiple”, etc., may be used interchangeably.

[0095] In some embodiments, the notation "at least one of A and B", "A and / or B", "A in one case, B in another", "in response to one case A, in response to another case B", etc., may include the following technical solutions depending on the situation: in some embodiments, A (execute A regardless of B); in some embodiments, B (execute B regardless of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); in some embodiments, A and B (both A and B are executed). The same applies when there are more branches such as A, B, C, etc.

[0096] In some embodiments, the notation "A or B" may include the following technical solutions, depending on the situation: in some embodiments, A (execution of A regardless of B); in some embodiments, B (execution of B regardless of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The same applies when there are more branches such as A, B, C, etc.

[0097] The prefixes "first," "second," etc., used in the embodiments of this disclosure are merely for distinguishing different descriptive objects and do not impose restrictions on the position, order, priority, quantity, or content of the descriptive objects. The description of the descriptive objects is found in the claims or the context of the embodiments, and the use of prefixes should not constitute unnecessary restrictions. For example, if the descriptive object is a "field," the ordinal numbers preceding "field" in "first field" and "second field" do not restrict the position or order of the "fields." "First" and "second" do not restrict whether the "fields" they modify are in the same message, nor do they restrict the order of "first field" and "second field." Similarly, if the descriptive object is a "level," the ordinal numbers preceding "level" in "first level" and "second level" do not restrict the priority between "levels." Furthermore, the number of descriptive objects is not limited by ordinal numbers and can be one or more. For example, in "first device," the number of "devices" can be one or more. Furthermore, the objects modified by different prefixes can be the same or different. For example, if the object being described is "device", then "first device" and "second device" can be the same device or different devices, and their types can be the same or different. Similarly, if the object being described is "information", then "first information" and "second information" can be the same information or different information, and their content can be the same or different.

[0098] In some embodiments, “including A,” “containing A,” “for indicating A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0099] In some embodiments, the terms “in response to…”, “in response to determining…”, “in the case of…”, “when…”, “if…”, “if…”, etc., can be used interchangeably.

[0100] In some embodiments, the terms “greater than,” “greater than or equal to,” “not less than,” “more than,” “more than or equal to,” “not less than,” “higher than,” “higher than or equal to,” “not lower than,” and “above” can be used interchangeably, as can the terms “less than,” “less than or equal to,” “not greater than,” “less than,” “less than or equal to,” “not more than,” “lower than,” “lower than or equal to,” “not higher than,” and “below”.

[0101] In some embodiments, the apparatus and device may be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. In some cases, they may also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "body", etc.

[0102] In some embodiments, "network" can be interpreted as devices included in the network, such as access network devices, core network devices, etc.

[0103] In some embodiments, "access network device (AN device)" may also be referred to as "radio access network device (RAN device)," "base station (BS)," "radio base station," or "fixed station." In some embodiments, it may also be understood as "node," "access point," "transmission point (TP)," "reception point (RP)," "transmission / reception point (TRP)," "panel," "antenna panel," "antenna array," "cell," "macro cell," "small cell," "femto cell," "pico cell," "sector," "cell group," "serving cell," "carrier," "component carrier," or "bandwidth part (BWP)."

[0104] In some embodiments, "terminal" or "terminal device" may be referred to as "user equipment (UE)," "user terminal," "mobile station (MS)," "mobile terminal (MT)," "subscriber station," "mobile unit," "subscriber unit," "wireless unit," "remote unit," "mobile device," "wireless device," "wireless communication device," "remote device," "mobile subscriber station," "access terminal," "mobile terminal," "wireless terminal," "remote terminal," "handset," "user agent," "mobile client," "client," etc.

[0105] In some embodiments, the acquisition of data, information, etc., may comply with the laws and regulations of the country where the location is situated.

[0106] In some embodiments, data, information, etc., may be obtained with the user's consent.

[0107] Furthermore, each element, each row, or each column in the table of this disclosure can be implemented as an independent embodiment, and any combination of any element, any row, or any column can also be implemented as an independent embodiment.

[0108] Figure 1a is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure.

[0109] As shown in Figure 1a, the communication system 100 includes a terminal 101 and a network device 102.

[0110] In some embodiments, terminal 101 includes, but is not limited to, at least one of the following: mobile phone, wearable device, Internet of Things device, car with communication function, smart car, tablet computer, computer with wireless transceiver function, virtual reality (VR) terminal device, augmented reality (AR) terminal device, wireless terminal device in industrial control, wireless terminal device in self-driving, wireless terminal device in remote medical surgery, wireless terminal device in smart grid, wireless terminal device in transportation safety, wireless terminal device in smart city, and wireless terminal device in smart home.

[0111] In some embodiments, network device 102 may include at least one of access network device and core network device.

[0112] In some embodiments, the access network device is, for example, a node or device that connects a terminal to a wireless network. The access network device may include, but is not limited to, at least one of the following in a 5G communication system: evolved Node B (eNB), next-generation eNB (ng-eNB), next-generation Node B (gNB), node B (NB), home node B (HNB), home evolved node B (HeNB), wireless backhaul device, radio network controller (RNC), base station controller (BSC), base transceiver station (BTS), base band unit (BBU), mobile switching center, base station in a 6G communication system, open RAN, cloud RAN, base station in other communication systems, and access node in a wireless fidelity (WiFi) system.

[0113] In some embodiments, the technical solutions of this disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within access network devices involved in the embodiments of this disclosure can be transformed into internal interfaces of Open RAN. The processes and information interactions between these internal interfaces can be implemented by software or programs.

[0114] In some embodiments, the access network device may be composed of a central unit (CU) and a distributed unit (DU). The CU may also be called a control unit. The CU-DU structure can separate the protocol layer of the access network device. Some of the protocol layer functions are centrally controlled by the CU, while the remaining part or all of the protocol layer functions are distributed in the DU and centrally controlled by the CU. However, this is not the only possibility.

[0115] In some embodiments, a core network device can be a single device comprising one or more network elements, or it can be multiple devices or a group of devices, each comprising all or part of one or more network elements. Network elements can be virtual or physical. The core network includes, for example, at least one of the Evolved Packet Core (EPC), 5G Core Network (5GCN), and Next Generation Core (NGC). Alternatively, a core network device refers to a network element with a specific function, such as an Access Management Function (AMF) or a Service Management Function (SMF).

[0116] It is understood that the communication system described in this disclosure is for the purpose of more clearly illustrating the technical solutions of this disclosure, and does not constitute a limitation on the technical solutions provided in this disclosure. As those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions provided in this disclosure are also applicable to similar technical problems.

[0117] The following embodiments of this disclosure can be applied to the communication system 100 shown in FIG1a, or to a part thereof, but are not limited thereto.

[0118] The entities shown in Figure 1a are illustrative. The communication system may include all or some of the entities in Figure 1a, or it may include other entities besides those in Figure 1a. The number and form of each entity are arbitrary. The connection relationship between the entities is illustrative. The entities may not be connected to each other or may be connected in any way. The connection may be direct or indirect, wired or wireless.

[0119] The embodiments disclosed herein can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), and IEEE 802.20, Ultra-Wideband (UWB), Bluetooth (a registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X) systems, systems utilizing other communication processing methods, and next-generation systems built upon them, etc. Furthermore, multiple systems can be combined (e.g., a combination of LTE or LTE-A with 5G).

[0120] 5G can meet users' demands for speed, latency, high-speed mobility, energy efficiency, and the diverse and complex communication needs of future services. The main application scenarios of 5G include Enhanced Mobile Broadband (eMBB), Ultra-Reliable Low Latency Communications (URLLC), and Massive Machine-Type Communication (mMTC). Among these, eMBB, which aims to provide users with multimedia content, services, and data, is experiencing rapid demand growth. eMBB may be deployed in different scenarios, such as indoors, urban areas, and rural areas, with significant differences in capabilities and requirements, requiring detailed analysis based on specific deployment scenarios. Typical applications of URLLC include industrial automation, power automation, remote medical operations (surgery), and traffic safety assurance. Typical characteristics of mMTC include high connection density, small data volume, latency-insensitive services, low module cost, and long module lifespan.

[0121] 5G base stations consume four times the energy of LTE base stations, so network energy saving is an important means of reducing the cost of operating 5G systems.

[0122] In Release 16 (R16), a Wake-Up Signal (WUS) was introduced to enable power saving for RRC_CONNECTED terminals in connected state Radio Resource Control (RRC). An offset is defined before the on-duration of Connected DRX (C-DRX) in connected state to define the duration of WUS transmission. During this transmission period, WUS, i.e., Downlink Control Information (DCI) 2-6, is transmitted, scrambled with Power Saving RNTI (PS-RNTI), to indicate whether the terminal should wake up to listen to the PDCCH during the subsequent C-DRX on-duration.

[0123] In Release 17 (R17), paging WUS was introduced to enable power saving for terminals in RRC idle or inactive states (RRC_IDLE / INACTIVE). Paging WUS is sent at a certain time before the paging occasion (PO), and paging early indication (PEI) is used to indicate whether the terminal is listening for paging scheduling information at that PO. The PEI is DCI 2-7, scrambled using PEI-RNTI.

[0124] In Release 18 (R18), to reduce network power consumption, the network can enter Network Energy Saving mode (NES mode), where cells periodically transmit discontinuously (cell DTX) and / or do not receive (cell DRX) at certain intervals. However, during cell DTX or cell DRX, the Master Information Block (MIB), System Information Block (SIB), paging, and Random Access Channel (RACH) can still be transmitted and received. Several NES functions include: SSB-less cells, cell DTX / DRX, antenna port adaptation, and Physical Downlink Shared channel (PDSCH) transmission power adaptation.

[0125] For cell DTX / DRX, the network side configures the cell DTX / DRX operating pattern via dedicated RRC signaling, which includes configuring a period, offset, and on-duration duration. During the on-duration period, the cell is in an active state and can receive or transmit data; other times are inactive, and the network side generally does not perform data reception or transmission. However, special cases such as paging, SSB, MIB, SIB, or RACH processes are unaffected, and reception or transmission continues normally.

[0126] Among them, DCIs 2-9 are group common DCIs used to notify the terminal about the activation or deactivation of cell DTX or DRX. In addition, NES also includes cell switch-off. Due to cell DTX / DRX activation or cell switch-off, NES-enabled terminals cannot function or meet the terminal's high-performance requirements, necessitating a handover to another cell. To address this, NES introduces Conditional Handover (CHO), also known as NES CHO. Handover can also be triggered based on a 1-bit instruction in the DCI; that is, if the NES CHO handover conditions are met and a DCI handover instruction is received from the network side, a handover can be executed. This DCI can be in DCI format 2-9, reusing the DCI used for cell DTX / DRX activation / deactivation.

[0127] The NR system broadcasts the following content: MIB, Remaining Minimum System Information (RMSI), and Other System Information (OSI). RMSI is SIB1. As shown in Figure 1b, SIB1 is configured with configuration parameters related to cell selection, cell access, OSI scheduling, cell common configuration, access control, and cell capability. The control-resource set (CORESET) of SIB1 is configured in the MIB. The multiplexing relationship between RMSI CORESET and SS / PBCH block (SSB) resources includes three patterns shown in Figures 1c to 1e: Pattern 1 is Time Division Multiplexing (TDM), Pattern 2 is TDM + Frequency Division Multiplexing (FDM), and Pattern 3 is FDM. The terminal obtains the resource location of the PDCCH based on the RMSI CORESET information in the Physical Broadcast Channel (PBCH), and then further receives the RMSI.

[0128] In R15, SI requests for connected (RRC_CONNECTED) UEs are not supported. In R19, SIB1 requests are supported, but pre-configured information is required for terminal 101 to initiate the SIB1 request process, such as obtaining the configuration information for requesting neighbor cell SIB1 from a neighbor cell.

[0129] In request-based SI transmission, network device 102 can broadcast the SI after receiving a request from terminal 101 to conserve radio resources. Referring to Figure 1f, the terminal can send a SystemInformationRequest to request the SI and receive SystemInformation messages.

[0130] SIB1 contains an indication of whether each SI is being broadcast. Terminal 101 can determine which SIs need to be requested by reading SIB1. Therefore, in related technologies, SIB1 needs to be obtained to determine the broadcast status of the SI before requesting it; the SI request process is only initiated if the requested SI is not broadcasting. If SIB1 is also based on a request, terminal 101 cannot obtain the broadcast status of the SI in a timely manner, and thus cannot obtain the SI in a timely manner.

[0131] Figure 2a is an interactive schematic diagram illustrating a method for requesting system information according to an embodiment of the present disclosure. As shown in Figure 2a, this embodiment of the present disclosure relates to a method for requesting system information, the method including:

[0132] In step S2101, terminal 101 defaults to the broadcast status of other SIs being not broadcast.

[0133] In some embodiments, terminal 101 may be a cell camped on-demand SIB1, that is, network device 102 sends SIB1 according to the request of terminal 101; wherein, SIB1 indicates the broadcast status of other SIs.

[0134] Optionally, if SIB1 is not in the sending state, such as if terminal 101 does not send information requesting SIB1, network device 102 does not need to send SIB1, and terminal 101 cannot know the broadcast status of other SIs in a timely manner.

[0135] Optionally, if SIB1 is not in a transmitting state, and if terminal 101 has a valid SIB1 version, it is not necessary to request SIB1 again, and network device 102 does not need to send SIB1. However, when the broadcast status of other SIs changes, the valid SIB1 version cannot indicate the changed broadcast status, so terminal 101 cannot know the broadcast status of other SIs in a timely manner.

[0136] In some embodiments, terminal 101 camps on SIB1, which is not a regular cell that transmits on demand, but SIB1 is not in a transmitting state, and terminal 101 cannot know the broadcast status of other SIs in a timely manner.

[0137] In some embodiments, when terminal 101 has a need to obtain other SIs, regardless of whether there is a valid SIB1 version, it can default or assume that the broadcast status of other SIs is not broadcasting, without requesting SIB1.

[0138] Optionally, terminal 101 may default or assume that the broadcast status of one or more SIs that need to be requested is not broadcast; or, terminal 101 may default or assume that the broadcast status of all other SIs except SIB1 is not broadcast.

[0139] Optionally, if the terminal 101 defaults to or assumes that the broadcast status of other SIs is not broadcast, it can directly execute step S2102, that is, initiate the request process of other SIs.

[0140] In step S2102, terminal 101 sends a first request message to network device 102.

[0141] In some embodiments, the first request information is used to request other system information SIs besides system information block SIB1. In the description of the embodiments of this disclosure, requesting other SIs can also be simply referred to as requesting SIs.

[0142] Optionally, when terminal 101 defaults or assumes that the broadcast status of one or more SIs to be requested is not broadcast, the first request information can be used to request the one or more SIs.

[0143] Optionally, when terminal 101 defaults or assumes that the broadcast status of all other SIs except SIB1 is not broadcast, the first request information can be used to request all other SIs.

[0144] Optionally, the first request information can be a SystemInformationRequest.

[0145] In some embodiments, terminal 101 may send the first request information in different ways.

[0146] Optionally, the SI request can be made using either an MSG1-based request or an MSG3-based request. An MSG1-based request is based on a reserved preamble and / or RACH resource. An MSG3-based request does not require a reserved RACH preamble and can be defined as an RRCSystemInfoRequest message (MSG3). MSG1 is the first message in the random access procedure, and MSG3 is the third message in the random access procedure.

[0147] In some embodiments, the first request information is sent based on a first message MSG1 or a third message MSG3.

[0148] Optionally, when making a request based on MSG1, terminal 101 sends the first request information via MSG1. When making a request based on MSG3, terminal 101 sends the first request information via MSG3.

[0149] In one example, terminal 101 determines whether to use an MSG1-based or MSG3-based request by reading system information. For instance, if network device 102 provides SI request configuration information (si-RequestConfig) in system information (SIB1), terminal 101 uses an MSG1-based SI request; otherwise, it uses an MSG3-based SI request. After receiving confirmation of the SI request, terminal 101 receives the SI in the current modification period. Terminal 101 receives the SI until the modification period ends or until it knows it has received the SI. If RACH fails during the SI request process, the subsequent behavior of terminal 101 depends on the UE implementation.

[0150] In another example, the method by which terminal 101 requests SI has a mapping or correspondence with the message on which the request for SI is based. For example, the method for requesting SI in the embodiment corresponding to Figure 2a is denoted as Method 1, the method for requesting SI in the embodiment corresponding to Figure 2b below is denoted as Method 2, and the method for requesting SI in the embodiment corresponding to Figure 2c is denoted as Method 3. Each method has a mapping or correspondence with MSG1-based or MSG3-based. If terminal 101 determines the method for requesting SI, it can determine whether the request for SI is based on MSG1 or MSG3.

[0151] In this example, for instance, Method 1 corresponds to MSG1-based, meaning that when sending the first request information based on the default broadcast state, the first request information is sent based on MSG1. Alternatively, in other examples, Method 1 corresponds to MSG3-based. As another example, Method 2 corresponding to Figure 2b or Method 3 corresponding to Figure 2c below corresponds to MSG3-based, meaning that when sending the first request information based on the indication information, the first request information is sent based on the MSG3. Alternatively, in other examples, Method 2 corresponding to Figure 2b or Method 3 corresponding to Figure 2c corresponds to MSG1-based.

[0152] In some embodiments, network device 102 receives the first request information described above.

[0153] In step S2103, network device 102 sends a message carrying other SIs to terminal 101.

[0154] In some embodiments, network device 102 may send other SIs to terminal 101 via SystemInformation messages.

[0155] In some embodiments, the names of information, etc., are not limited to the names described in the embodiments. Terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", and "field" can be used interchangeably.

[0156] In some embodiments, “get,” “obtain,” “receive,” “transmit,” “bidirectional transmission,” and “send and / or receive” can be used interchangeably and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from higher layers, obtaining through self-processing, or autonomous implementation, among other meanings.

[0157] In some embodiments, terms such as “send,” “transmit,” “report,” “distribute,” “transfer,” “bidirectional transmission,” “send and / or receive” can be used interchangeably.

[0158] In some embodiments, the terms “radio”, “wireless”, “radio access network (RAN)”, “access network (AN)”, and “RAN-based” can be used interchangeably.

[0159] In some embodiments, terms such as “moment,” “point in time,” “time,” and “time location” can be used interchangeably, as can terms such as “duration,” “segment,” “time window,” “window,” and “time.”

[0160] In some embodiments, the terms "component carrier (CC)," "cell," "frequency carrier," and "carrier frequency" can be used interchangeably.

[0161] In some embodiments, terms such as "certain," "preset," "default," "set," "indicated," "a certain," "any," and "first" can be used interchangeably. "Certain A," "preset A," "default A," "set A," "indicated A," "a certain A," "any A," and "first A" can be interpreted as A pre-defined in a protocol or the like, or as A obtained through setting, configuration, or instruction, or as specific A, a certain A, any A, or first A, but are not limited thereto.

[0162] In some embodiments, the determination or judgment can be made by a value represented by 1 bit (0 or 1), or by a true or false value (boolean), or by a comparison of numerical values ​​(e.g., a comparison with a predetermined value), but is not limited thereto.

[0163] In some embodiments, "not expecting to receive" can be interpreted as not receiving on time domain resources and / or frequency domain resources, or as not performing subsequent processing on the data after receiving it; "not expecting to send" can be interpreted as not sending, or as sending but not expecting the receiver to respond to the sent content.

[0164] The method disclosed in this embodiment may include at least one of steps S2101 to S2103. For example, the method includes step S2102. Alternatively, the method includes steps S2101 to S2102.

[0165] In some embodiments, other alternative implementations may be described before or after the specification corresponding to FIG2a.

[0166] In this embodiment of the present disclosure, when the terminal 101 needs to make an SI request, regardless of whether there is a valid SIB1 or whether SIB1 is being sent, the terminal 101 can directly make an SI request based on the default broadcast state, thereby saving signaling resources by not requesting SIB1, and can request SI in a timely manner to improve communication efficiency.

[0167] Figure 2b is an interactive schematic diagram illustrating a method for requesting system information according to an embodiment of the present disclosure. As shown in Figure 2b, this embodiment of the present disclosure relates to a method for requesting system information, the method including:

[0168] In step S2201, terminal 101 sends a second request message to network device 102.

[0169] In some embodiments, the second request information is used to request a new SIB1. This new SIB1 is used to distinguish it from existing or present SIB1 versions in terminal 101, such as the SIB1 version received before step S2201.

[0170] In some embodiments, terminal 101 may be a cell camped on-demand SIB1, that is, network device 102 sends SIB1 according to the request of terminal 101; wherein, SIB1 indicates the broadcast status of other SIs.

[0171] Optionally, if terminal 101 has a valid SIB1 version, but the valid SIB1 version cannot update the broadcast status of other SIs in a timely manner, or cannot indicate changes in the broadcast status of other SIs in a timely manner, then terminal 101 can send a second request message to request a new SIB1 in order to know the latest broadcast status of other SIs.

[0172] Optionally, if terminal 101 does not have a valid SIB1 version, terminal 101 can obtain the broadcast status of other SIs by requesting a new SIB1.

[0173] In some embodiments, the terminal 101 is camped on a regular cell where SIB1 is not a transmit-on-demand cell, but SIB1 is not in a transmit state. The terminal 101 can request a new SIB1 through the second request information in order to know the broadcast status of other SIs in a timely manner.

[0174] It is worth noting that in this embodiment of the disclosure, if terminal 101 needs to request other SIs, it can trigger the process of requesting SIB1. For example, if the following event exists: terminal 101 is camped in an on-demand SIB1 cell or SIB1 has not been sent, and there is a need to request other SIs, then regardless of whether terminal 101 has a valid SIB1 version, terminal 101 can initiate the process of requesting SIB1, such as sending a second request information to request a new SIB1 first.

[0175] In some embodiments, network device 102 receives a second request message sent by terminal 101.

[0176] In step S2202, network device 102 sends a new SIB1 to terminal 101.

[0177] In some embodiments, the new SIB1 may indicate the latest broadcast status of other SIs so that terminal 101 can determine whether to initiate a process to request other SIs.

[0178] In some embodiments, the SIB1 includes indication information for indicating the broadcast status of other SIs.

[0179] In some embodiments, terminal 101 receives a new SIB1 and learns the broadcast status of other SIs that need to be requested.

[0180] In step S2203, terminal 101 sends a first request message to network device 102.

[0181] In some embodiments, the first request information is used to request other system information SIs besides system information block SIB1. In the description of the embodiments of this disclosure, requesting other SIs can also be simply referred to as requesting SIs.

[0182] In some embodiments, based on the requested new SIB1, the terminal 101 can know the broadcast status of other SIs that need to be requested. When the broadcast status is indicated as "not broadcasting", the terminal 101 performs step S2203, that is, initiates the SI request process to the network device 102.

[0183] Optionally, terminal 101 may request, based on the first request information, to broadcast one or more other SIs whose broadcast status is not broadcast.

[0184] In some embodiments, the method of sending the first request information can be referred to the description of step S2102 in the embodiment of FIG2a.

[0185] For example, terminal 101 can determine whether to use an MSG1-based or MSG3-based request by reading system information.

[0186] For example, the method by which terminal 101 requests an SI has a mapping or correspondence with the message on which the request for SI is based. The embodiment corresponding to Figure 2b is denoted as Method Two, and can correspond to MSG1-based or MSG3-based. Taking Method Two corresponding to MSG3-based as an example, if terminal 101 requests other SIs through the embodiment of Figure 2b, i.e., Method Two, the terminal can send the first request information through MSG3.

[0187] In some embodiments, network device 102 receives the first request information described above.

[0188] In step S2204, network device 102 sends a message carrying other SIs to terminal 101.

[0189] In some embodiments, step S2204 can be referred to the implementation of step S2103 in FIG2a, and will not be repeated here.

[0190] The method involved in the embodiments of this disclosure may include at least one of steps S2201 to S2204.

[0191] In some embodiments, other alternative implementations may be described before or after the specification corresponding to FIG2b.

[0192] In this embodiment of the disclosure, when the terminal 101 needs to make an SI request, it can initiate an SIB1 request first, regardless of whether there is a valid SIB1, so as to know the latest broadcast status of the SI to be requested, and thus make the SI request in a timely manner, thereby improving communication efficiency.

[0193] Figure 2c is an interactive schematic diagram illustrating a method for requesting system information according to an embodiment of the present disclosure. As shown in Figure 2c, this embodiment of the present disclosure relates to a method for requesting system information, the method including:

[0194] In step S2301, network device 102 sends a paging DCI to terminal 101.

[0195] In some embodiments, the paging DCI can be used to indicate the broadcast status of other SIs, such as including indication information for indicating the broadcast status of other SIs.

[0196] Alternatively, the broadcast status of other SIs can be indicated by adding new information fields in the paging DCI or reusing existing information fields. For example, the short message in the paging DCI is used to carry the broadcast status of the SI.

[0197] In some embodiments, terminal 101 receives the paging DCI to learn about the broadcast status of other SIs.

[0198] In some embodiments, terminal 101 may be a cell camped on-demand SIB1, that is, network device 102 sends SIB1 according to the request of terminal 101; wherein, SIB1 indicates the broadcast status of other SIs.

[0199] Optionally, if terminal 101 has a valid SIB1 version, but the valid SIB1 version cannot update the broadcast status of other SIs in a timely manner, or cannot indicate changes in the broadcast status of other SIs in a timely manner, then terminal 101 can obtain the latest broadcast status of other SIs based on paging DCI.

[0200] Optionally, if terminal 101 does not have a valid SIB1 version, terminal 101 can obtain the latest broadcast status of other SIs based on paging DCI.

[0201] In some embodiments, terminal 101 camps on SIB1, which is not a regular cell that transmits on demand, but SIB1 is not in a transmitting state. Terminal 101 can learn about the latest broadcast status of other SIs based on paging DCI.

[0202] In step S2302, terminal 101 sends a first request message to network device 102.

[0203] In some embodiments, the first request information is used to request other system information SIs besides system information block SIB1. In the description of the embodiments of this disclosure, requesting other SIs can also be simply referred to as requesting SIs.

[0204] In some embodiments, terminal 101 learns the broadcast status of other SIs based on paging DCI. When the broadcast status of other SIs is indicated as "not broadcasting", it performs step S2302, that is, initiates a request SI procedure to network device 102.

[0205] Optionally, terminal 101 may request, based on the first request information, to broadcast one or more other SIs whose broadcast status is not broadcast.

[0206] In some embodiments, the method of sending the first request information can be referred to the description of step S2102 in the embodiment of FIG2a.

[0207] For example, terminal 101 can determine whether to use an MSG1-based or MSG3-based request by reading system information.

[0208] For example, the method by which terminal 101 requests an SI has a mapping or correspondence with the message on which the request for SI is based. The embodiment corresponding to Figure 2c is denoted as Method 3, and can correspond to MSG1-based or MSG3-based. Taking Method 3 corresponding to MSG3-based as an example, if terminal 101 requests other SIs through the embodiment of Figure 2c, i.e., Method 3, the terminal can send the first request information through MSG3.

[0209] In some embodiments, network device 102 receives the first request information described above.

[0210] In step S2303, network device 102 sends a message carrying other SIs to terminal 101.

[0211] In some embodiments, step S2303 can be referred to the implementation of step S2103 in FIG2a, and will not be repeated here.

[0212] The method involved in the embodiments of this disclosure may include at least one of steps S2301 to S2303.

[0213] In some embodiments, other optional implementations may be described before or after the specification corresponding to FIG2c.

[0214] In this embodiment of the present disclosure, when the terminal 101 needs to make an SI request, regardless of whether there is a valid SIB1, it can learn the latest broadcast status of the SI to be requested based on the listening paging DCI, thereby making the SI request in a timely manner and improving communication efficiency.

[0215] Figure 3a is a flowchart illustrating a method for requesting system information according to an embodiment of the present disclosure. As shown in Figure 3a, this embodiment of the present disclosure relates to a method for requesting system information, which is executed by a terminal 101. The method includes:

[0216] Step S3101: Receive instruction information.

[0217] In some embodiments, the indication information is used to indicate the broadcast status of other SIs.

[0218] In some embodiments, step S3101 may be omitted. For example, referring to the embodiment of step S2101 in FIG2a, the terminal 101 does not need to know the broadcast status of SI through the indication information.

[0219] In some embodiments, the indication information can be sent through a new SIB1. In this case, step S3101 can refer to the implementation of step S2202 in FIG2b, which will not be repeated here. In this embodiment, terminal 101 can request the new SIB1, as in the implementation of step S2201.

[0220] In some embodiments, the indication information can be sent via paging DCI. In this case, step S3101 can refer to the implementation of step S2301 in FIG2c, which will not be repeated here.

[0221] Step S3102: Send the first request information.

[0222] In some embodiments, step S3102 can refer to the implementation of step S2102 in FIG2a, which will not be repeated here.

[0223] In some embodiments, step S3102 can refer to the implementation of step S2203 in FIG2b, which will not be repeated here.

[0224] In some embodiments, step S3102 can refer to the implementation of step S2302 in FIG2c, which will not be repeated here.

[0225] Step S3103: Receive messages carrying other SIs.

[0226] In some embodiments, step S3103 can be referred to the implementation of step S2103 in FIG2a, and will not be repeated here.

[0227] The method involved in the embodiments of this disclosure may include at least one of steps S3101 to S3103.

[0228] In some embodiments, other alternative implementations may be described before or after the specification corresponding to FIG3a.

[0229] Figure 3b is a flowchart illustrating a method for requesting system information according to an embodiment of the present disclosure. As shown in Figure 3b, this embodiment of the present disclosure relates to a method for requesting system information, which is executed by terminal 101. The method includes:

[0230] Step S3201: Receive instruction information.

[0231] In some embodiments, step S3201 can refer to the implementation of step S3101 in FIG3a, which will not be repeated here.

[0232] Step S3202: Send the first request information.

[0233] In some embodiments, step S3202 can refer to the implementation of step S3102 in FIG3a, which will not be repeated here.

[0234] In some embodiments, other alternative implementations may be described before or after the specification corresponding to FIG3b.

[0235] Figure 3c is a flowchart illustrating a method for requesting system information according to an embodiment of the present disclosure. As shown in Figure 3c, this embodiment of the present disclosure relates to a method for requesting system information, which is executed by terminal 101. The method includes:

[0236] Step S3301: Send the first request information to network device 102.

[0237] In some embodiments, step S3301 can refer to the implementation of the relevant steps in Figures 2a to 2b, which will not be repeated here.

[0238] In some embodiments, other optional implementations may be described before or after the specification corresponding to FIG3c.

[0239] Figure 4a is a flowchart illustrating a method for requesting system information according to an embodiment of the present disclosure. As shown in Figure 4a, this embodiment of the present disclosure relates to a method for requesting system information, which is executed by a network device 102. The method includes:

[0240] Step S4101: Send instruction information.

[0241] In some embodiments, the indication information is used to indicate the broadcast status of other SIs.

[0242] In some embodiments, step S4101 may be omitted. For example, referring to the embodiment of step S2101 in FIG2a, the terminal 101 does not need to know the broadcast status of SI through the indication information.

[0243] In some embodiments, the indication information can be sent through a new SIB1. In this case, step S4101 can refer to the implementation of step S2202 in FIG2b, which will not be repeated here.

[0244] In some embodiments, the indication information can be sent via paging DCI. In this case, step S4101 can refer to the implementation of step S2301 in FIG2c, which will not be repeated here.

[0245] Step S4102: Receive the first request information.

[0246] In some embodiments, step S4102 can refer to the implementation of step S2102 in FIG2a, which will not be repeated here.

[0247] In some embodiments, step S4102 can refer to the implementation of step S2203 in FIG2b, which will not be repeated here.

[0248] In some embodiments, step S4102 can refer to the implementation of step S2302 in FIG2c, which will not be repeated here.

[0249] Step S4103: Send a message carrying other SIs.

[0250] In some embodiments, step S4103 can be referred to the implementation of step S2103 in FIG2a, and will not be repeated here.

[0251] The method involved in the embodiments of this disclosure may include at least one of steps S4101 to S4103.

[0252] In some embodiments, other alternative implementations may be described before or after the specification corresponding to FIG4a.

[0253] Figure 4b is a flowchart illustrating a method for requesting system information according to an embodiment of the present disclosure. As shown in Figure 4b, this embodiment of the present disclosure relates to a method for requesting system information, which is executed by a network device 102. The method includes:

[0254] Step S4201: Send instruction information.

[0255] In some embodiments, step S4201 can refer to the implementation of step S3101 in FIG4a, which will not be repeated here.

[0256] Step S4202: Receive the first request information.

[0257] In some embodiments, step S4202 can refer to the implementation of step S3102 in FIG4a, which will not be repeated here.

[0258] In some embodiments, other alternative implementations may be described before or after the specification corresponding to FIG4b.

[0259] Figure 4c is a flowchart illustrating a method for requesting system information according to an embodiment of the present disclosure. As shown in Figure 4c, this embodiment of the present disclosure relates to a method for requesting system information, which is executed by a network device 102. The method includes:

[0260] Step S4301: Receive the first request information sent by terminal 101.

[0261] In some embodiments, step S4301 can refer to the implementation of the relevant steps in Figures 2a to 2b, which will not be repeated here.

[0262] In some embodiments, other optional implementations may be described before or after the specification corresponding to FIG4c.

[0263] This disclosure addresses the issue of how a UE obtains its SI status when SIB1 is a request-based scenario, provided the UE has a valid SIB1. Referring to the following example, this disclosure proposes how to initiate an SI request process when camped on an on-demand SIB1 cell.

[0264] Example 1:

[0265] The implementation of this example can refer to the following steps S11 to S13:

[0266] Step S11: The terminal is camped on-demand SIB1 cell and has a valid SIB1. At this time, the terminal initiates the SI request process.

[0267] Step S12: If the current cell is an on-demand SIB1 cell or SIB1 has not been transmitted, and the terminal has a valid SIB1 version, then the terminal assumes that the broadcast status of the requested target SI is "notBroadcasting;".

[0268] Step S13: The terminal triggers the process of requesting SI.

[0269] In this example, the terminal initiates an SI request but does not initiate an SIB1 request. The default broadcast status is "notBroadcasting;", which is why the SI request is initiated.

[0270] Example 2:

[0271] The implementation of this example can refer to the following steps S21 to S23:

[0272] Step S21: The terminal is camped in the on-demand SIB1 cell and has a valid SIB1. At this time, the terminal initiates the SI request process.

[0273] Step S22: If the current cell is an on-demand SIB1 cell or SIB1 is not being transmitted, and the terminal has a valid SIB1 version, the terminal first initiates a request for SIB1 procedure to obtain the broadcast status of the SI. If the broadcast status of the SI is "notBroadcasting;", the terminal will proceed accordingly.

[0274] Step S23: The terminal triggers the process of requesting SI.

[0275] In this example, before initiating SI, the terminal requests SIB1, regardless of whether a valid SIB1 version exists.

[0276] Example 3:

[0277] The implementation of this example can refer to the following steps S31 to S33:

[0278] Step S31: The terminal is camped on-demand SIB1 cell and has a valid SIB1. At this time, the terminal initiates the SI request process.

[0279] Step S32: If the current cell is an on-demand SIB1 cell or SIB1 is not being transmitted, and the terminal has a valid SIB1 version, then the terminal first receives the paging DCI, which indicates the broadcast status of the SI. If the broadcast status of the SI is "notBroadcasting;", then the terminal receives the paging DCI.

[0280] Step S33: The terminal triggers the process of requesting SI.

[0281] In this example, the short message of Paging DCI is used to carry the broadcast status of SI, and terminal 101 determines whether SI can be initiated based on this.

[0282] This disclosure also provides an apparatus for implementing any of the above methods. For example, an apparatus is provided that includes units or modules for implementing the steps performed by the terminal in any of the above methods. Alternatively, another apparatus is provided that includes units or modules for implementing the steps performed by a network device (e.g., an access network device, a core network functional node, a core network device, etc.) in any of the above methods.

[0283] It should be understood that the division of units or modules in the above device is only a logical functional division. In actual implementation, they can be fully or partially integrated into a single physical entity, or they can be physically separated. Furthermore, the units or modules in the device can be implemented by a processor calling software: for example, the device includes a processor connected to a memory containing instructions. The processor calls the instructions stored in the memory to implement any of the above methods or to implement the functions of the units or modules in the above device. The processor can be, for example, a general-purpose processor, such as a Central Processing Unit (CPU) or a microprocessor, and the memory can be internal or external to the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits. The functionality of some or all of the units or modules can be achieved through the design of these hardware circuits, which can be understood as one or more processors. For example, in one implementation, the hardware circuit is an application-specific integrated circuit (ASIC). The functionality of some or all of the units or modules is achieved through the design of the logical relationships between the components within the circuit. In another implementation, the hardware circuit can be implemented using a programmable logic device (PLD). Taking a field-programmable gate array (FPGA) as an example, it can include a large number of logic gates. The connection relationships between the logic gates are configured through configuration files, thereby achieving the functionality of some or all of the units or modules. All units or modules of the above device can be implemented entirely through processor-called software, entirely through hardware circuits, or partially through processor-called software with the remaining parts implemented through hardware circuits.

[0284] In this embodiment, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction read and execute capabilities, such as a Central Processing Unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationships of hardware circuits. The logical relationships of the aforementioned hardware circuits are fixed or reconfigurable. For example, the processor is a hardware circuit implemented using an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and configuring the hardware circuit can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. Furthermore, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a Neural Network Processing Unit (NPU), a Tensor Processing Unit (TPU), or a Deep Learning Processing Unit (DPU).

[0285] Figure 5a is a schematic diagram of the terminal structure proposed in an embodiment of this disclosure. As shown in Figure 5a, the terminal 5100 may include at least one of a transceiver module 5101, a processing module 5102, etc. In some embodiments, the transceiver module 5101 is used to send a first request information to a network device, the first request information being used to request other system information SIs besides System Information Block SIB1; wherein, the terminal is camped in a cell that requests SIB1 on demand or the SIB1 is not in a transmitting state.

[0286] Optionally, the transceiver module 5101 is used to perform at least one of the communication steps such as sending and / or receiving performed by the terminal 101 in any of the above methods, which will not be described in detail here. Optionally, the processing module 5102 is used to perform at least one of the other steps performed by the terminal 101 in any of the above methods, which will not be described in detail here.

[0287] Figure 5b is a schematic diagram of the terminal structure proposed in an embodiment of this disclosure. As shown in Figure 5b, the network device 5200 may include at least one of a transceiver module 5201, a processing module 5202, etc. In some embodiments, the transceiver module 5201 is used to receive first request information sent by the terminal, the first request information being used to request other system information SIs besides System Information Block SIB1; wherein, the terminal is camped in a cell that requests SIB1 on demand or the SIB1 is not in a transmitting state.

[0288] In some embodiments, the transceiver module may include a transmitting module and / or a receiving module, which may be separate or integrated. Optionally, the transceiver module may be interchangeable with a transceiver.

[0289] In some embodiments, the processing module may be a single module or may include multiple sub-modules. Optionally, the multiple sub-modules may each perform all or part of the steps required by the processing module. Optionally, the processing module may be interchangeable with a processor.

[0290] Figure 6a is a schematic diagram of the structure of the communication device 6100 proposed in an embodiment of this disclosure. The communication device 6100 can be a network device (e.g., access network device, core network device, etc.), a terminal (e.g., user equipment, etc.), a chip, chip system, or processor that supports the network device in implementing any of the above methods, or a chip, chip system, or processor that supports the terminal in implementing any of the above methods. The communication device 6100 can be used to implement the methods described in the above method embodiments; for details, please refer to the descriptions in the above method embodiments.

[0291] As shown in Figure 6a, the communication device 6100 includes one or more processors 6101. The processor 6101 can be a general-purpose processor or a dedicated processor, such as a baseband processor or a central processing unit (CPU). The baseband processor can be used to process communication protocols and communication data, while the CPU can be used to control communication devices (e.g., base stations, baseband chips, terminal devices, terminal device chips, DUs or CUs, etc.), execute programs, and process program data. Optionally, the communication device 6100 can be used to execute any of the above methods. Optionally, one or more processors 6101 can be used to invoke instructions to cause the communication device 6100 to execute any of the above methods.

[0292] In some embodiments, the communication device 6100 further includes one or more transceivers 6102. When the communication device 6100 includes one or more transceivers 6102, the transceiver 6102 performs at least one of the communication steps such as sending and / or receiving in the above method, and the processor 6101 performs at least one of the other steps. In optional embodiments, the transceiver may include a receiver and / or a transmitter, which may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, transceiver circuit, interface circuit, interface, etc., can be used interchangeably; the terms transmitter, transmitting unit, transmitter, transmitting circuit, etc., can be used interchangeably; and the terms receiver, receiving unit, receiver, receiving circuit, etc., can be used interchangeably.

[0293] In some embodiments, the communication device 6100 further includes one or more memories 6103 for storing data. Optionally, all or part of the memories 6103 may be located outside the communication device 6100. In optional embodiments, the communication device 6100 may include one or more interface circuits 6104. Optionally, the interface circuits 6104 are connected to the memories 6103 and can be used to receive data from the memories 6103 or other devices, and to send data to the memories 6103 or other devices. For example, the interface circuits 6104 can read data stored in the memories 6103 and send that data to the processor 6101.

[0294] The communication device 6100 described in the above embodiments may be a network device or a terminal, but the scope of the communication device 6100 described in this disclosure is not limited thereto, and the structure of the communication device 6100 may not be limited by FIG. 6a. The communication device may be a standalone device or a part of a larger device. For example, the communication device may be: (1) a standalone integrated circuit IC, or chip, or chip system or subsystem; (2) a collection of one or more ICs, optionally, the IC collection may also include storage components for storing data and programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, terminal device, smart terminal device, cellular phone, wireless device, handheld device, mobile unit, vehicle device, network device, cloud device, artificial intelligence device, etc.; (6) others, etc.

[0295] Figure 6b is a schematic diagram of the structure of chip 6200 according to an embodiment of this disclosure. For cases where the communication device 6100 can be a chip or a chip system, please refer to the schematic diagram of chip 6200 shown in Figure 6b, but it is not limited thereto.

[0296] Chip 6200 includes one or more processors 6201. Chip 6200 is used to perform any of the methods described above.

[0297] In some embodiments, chip 6200 further includes one or more interface circuits 6202. Optionally, terms such as interface circuit, interface, and transceiver pin can be used interchangeably. In some embodiments, chip 6200 further includes one or more memories 6203 for storing data. Optionally, all or part of the memories 6203 may be located outside chip 6200. Optionally, interface circuit 6202 is connected to memory 6203, and interface circuit 6202 can be used to receive data from memory 6203 or other devices, and interface circuit 6202 can be used to send data to memory 6203 or other devices. For example, interface circuit 6202 can read data stored in memory 6203 and send the data to processor 6201.

[0298] In some embodiments, the interface circuit 6202 performs at least one of the communication steps, such as sending and / or receiving, in the above-described method. For example, the interface circuit 6202 performing the communication steps, such as sending and / or receiving, in the above-described method means that the interface circuit 6202 performs data interaction between the processor 6201, the chip 6200, the memory 6203, or the transceiver device. In some embodiments, the processor 6201 performs at least one of the other steps.

[0299] The modules and / or devices described in the various embodiments, such as virtual devices, physical devices, and chips, can be combined or separated arbitrarily as needed. Optionally, some or all steps can also be performed collaboratively by multiple modules and / or devices, which is not limited here.

[0300] This disclosure also proposes a storage medium storing instructions that, when executed on the communication device 6100, cause the communication device 6100 to perform any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but not limited thereto; it may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but not limited thereto; it may also be a temporary storage medium.

[0301] This disclosure also provides a program product that, when executed by the communication device 6100, causes the communication device 6100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0302] This disclosure also proposes a computer program that, when run on a computer, causes the computer to perform any of the above methods. Industrial applicability

[0303] Even when the terminal is camped on-demand SIB1 cell, or when SIB1 is in a non-transmitting state, the terminal can also initiate an SI request to the network device through the first request information to obtain other required SIs in a timely manner and improve communication efficiency.

Claims

A method for requesting system information, executed by a terminal, the method comprising: Send a first request message to the network device. The first request message is used to request other system information SIs other than system information block SIB1. The terminal is camped in the cell that requests SIB1 on demand or the SIB1 is not in the sending state. The method as described in claim 1, wherein, The terminal has a valid SIB1 version. The method as described in claim 1 or 2, wherein, The terminal defaults to the broadcast status of the other SIs being not broadcast. The method as described in claim 1 or 2, wherein, The method further includes: Receive indication information sent by the network device, the indication information being used to indicate the broadcast status of the other SIs; The first request information is sent when the broadcast status is indicated as not broadcasting. The method as described in claim 4, wherein, The method further includes: Send a second request message to the network device, the second request message being used to request a new SIB1; Receive the new SIB1 sent by the network device; The indication information is sent through the new SIB1. The method as described in claim 4, wherein, The instruction information is sent via paging downlink control information (DCI). The method as described in any one of claims 1 to 6, wherein, The first request information is sent based on a first message MSG1 or a third message MSG3. The method of claim 7, wherein, When the first request information is sent based on the default broadcast state, the first request information is sent based on MSG1; or, When the first request information is sent based on the indication information, the first request information is sent based on the MSG3. A method for requesting system information, performed by a network device, the method comprising: The terminal receives a first request message sent by the terminal, the first request message being used to request other system information SIs besides system information block SIB1; wherein the terminal is camped in a cell that requests SIB1 on demand or the SIB1 is not in a sending state. The method of claim 9, wherein, The method further includes: Send indication information to the terminal, the indication information being used to indicate the broadcast status of the other SIs; wherein, the first request information is sent when the broadcast status is not broadcast. The method of claim 10, wherein, The method further includes: Receive a second request message sent by the terminal, the second request message being used to request a new SIB1; Send the new SIB1 to the terminal; The indication information is sent through the new SIB1. The method of claim 10, wherein, The instruction information is sent via paging downlink control information (DCI). The method as described in any one of claims 9 to 12, wherein, The first request information is sent based on a first message MSG1 or a third message MSG3. The method of claim 13, wherein, When the first request information is sent based on the indication information, the first request information is sent based on the MSG3. A terminal, comprising: The transceiver module is used to send a first request message to the network device. The first request message is used to request other system information SIs besides system information block SIB1. The terminal is camped in the cell that requests SIB1 on demand or the SIB1 is not in the transmission state. A network device, comprising: The transceiver module is used to receive a first request information sent by the terminal, the first request information being used to request other system information SIs besides system information block SIB1; wherein, the terminal is camped in a cell that requests SIB1 on demand or the SIB1 is not in a transmitting state. A terminal, comprising: One or more processors; The terminal is configured to implement the method according to any one of claims 1 to 8. A network device, comprising: One or more processors; The network device is configured to implement the method according to any one of claims 9 to 14. A communication system includes a terminal and network equipment, wherein, The terminal is configured to implement the method as described in any one of claims 1 to 8; The network device is configured to implement the method as described in any one of claims 9 to 14. A storage medium storing instructions, wherein, When the instructions are executed on the communication device, the communication device performs the method as described in any one of claims 1 to 8 or claims 9 to 14. A program product, wherein, When the program product is executed by a communication device, the communication device performs the method as described in any one of claims 1 to 8 or 9 to 14.

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