System information acquisition method, communication apparatus, program product, and medium

Abstract

The embodiments of the present application relate to the technical field of communications. Provided are a system information acquisition method, a communication apparatus, a program product, and a medium. The method is applied to a terminal device which supports an on-demand system information block type1. The method comprises: when a condition for camping on a target cell and a system information request trigger condition are met, sending a system information request, which is used for acquiring first system information, wherein the first system information comprises a system information block type1, and the target cell supports an on-demand system information block type1. In the embodiments of the present application, when a cell camping condition and a system information request trigger condition are met, a terminal device initiates a request to a network device for a system information block type1, such that changed system information can still be acquired in a timely manner even if the terminal device misses a system information change indication, thereby ensuring that the terminal device can correctly camp in a network energy-saving cell scenario.

Description

Method for acquiring system information, communication device, program product and medium

[0001] The present application claims priority to the Chinese patent application No. 202411041938.8, filed on July 30, 2024, and entitled "Method for acquiring system information, communication device, program product and medium", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the field of communication technology, in particular to a method for acquiring system information, a communication device, a program product and a medium. BACKGROUND

[0003] With the large-scale construction of the fifth generation (5th Generation, 5G) mobile network, the energy consumption of the wireless communication network has increased significantly. Based on the demand for green energy saving of the 5G network, a scheme of non-continuous transmission of the first system information block (System Information Block Type1, SIB1) is provided in the network energy saving (Network Energy Saving, NES) issue. The scheme allows the SIB1 to be transmitted after receiving the request of the user equipment (User Equipment, UE), and the scheme can also be called on-demand first system information (On Demand SIB1, OD-SIB1). By reducing the transmission occasion of SIB1 on the network side, the purpose of network energy saving can be achieved. The cell based on the request of the UE to transmit SIB1 is called a network energy saving cell (NES Cell).

[0004] In the 5G system, system information change can only occur in specific radio frames. These specific radio frames form a modification period (Modification Period, MP) of system information. For the UE entering the NES Cell, it may not receive the system information change indicator SI change indicator transmitted by the network side because the timing of entering the NES Cell is at the end of an MP, so that the UE no longer receives the changed SIB1 in the next MP, and further causes the UE to be unable to correctly camp on the NES Cell or unable to correctly request other system information (Other System Information, OSI). SUMMARY

[0005] The present application provides a method for acquiring system information, a communication device, a program product and a medium, which aims to solve the communication problems that the terminal device may not correctly camp on the cell or correctly request other system information due to missing system information change indicators.

[0006] To achieve the above object, the present application provides the following technical solutions.

[0007] The first aspect of the present application provides a system information acquisition method, which is applied to a terminal device supporting on-demand first system information (OD-SIB1), and the method comprises the following steps: when a cell residence condition and a system information request triggering condition are met, a system information request is sent, the system information request is used to acquire first system information, the first system information comprises a first system information block (SIB1), and the target cell supports OD-SIB1.

[0008] In the embodiments of the present application, the terminal device actively requests a network device to acquire the first system information block SIB1 when the cell residence condition and the system information request triggering condition are met, so that the terminal device can acquire the changed system information in time even if the terminal device misses the system information change indication. Since the SIB1 comprises the necessary content for cell selection and residence of the terminal device, it is ensured that the terminal device can correctly reside in the network energy saving cell scenario, and communication problems such as incorrect cell residence or incorrect request for other system information of the terminal device due to missing the system information change indication are avoided.

[0009] Unless otherwise specified, the "terminal device" in the present application can refer to the terminal device itself, a component (for example, a processor, a chip, or a chip system, etc.) in the terminal device, or a logic module or software capable of realizing all or part of the sending end function. The present application does not limit the execution subject of the system information acquisition method.

[0010] In some possible implementation manners, the system information request triggering condition comprises at least one of the following conditions: no system information change indication is received within a change period corresponding to the first system information; there is a demand for acquiring part or all of second system information, the second system information comprising other system information except the first system information and a master information block MIB; the change period corresponding to the first system information and the change period corresponding to the second system information are different change periods; the request for acquiring the second system information fails; there is uplink data to be transmitted and / or downlink data to be received; the first system information is not in a sending state before the request for acquiring the second system information.

[0011] In the embodiments of the present application, six optional system information request triggering conditions are provided, and when at least one of the conditions is met, the terminal device can actively request a network device to acquire the first system information block, which specifically comprises:

[0012] The first, obtaining the system information change indication in the change period corresponding to the first system information.

[0013] Wherein, the terminal device does not receive the system information change indication in the change period corresponding to the first system information, so that the terminal device may miss the system information change indication sent by the network side when entering the target cell at the end of a change period. For example, the terminal device acquires the first system information in a change period, and the corresponding change indication transmission ends or the change period ends. Therefore, in this case, the terminal device can actively request the network device to acquire the first system information block SIB1, avoiding the communication problems such as the terminal device failing to correctly camp on the cell or failing to correctly request other system information due to missing the system information change indication.

[0014] The second, there is a demand for acquiring part or all of the second system information, which includes other system information (OSI) in addition to the first system information and the master information block MIB.

[0015] Wherein, when the terminal device has a demand for acquiring part or all of the other system information (OSI), the terminal device can actively request the network device to acquire the first system information block SIB1. Since the first system information block SIB1 also includes the scheduling information of the other system information OSI (such as the mapping of the system information block SIB to the system information SI message, the periodicity, the window size, etc.), the terminal device should actively request the network device to acquire the first system information block SIB1 when there is a demand for acquiring the other system information, so as to ensure that the terminal device can acquire the latest first system information block SIB1 (SIB1 after the change in the case of system information change). Correspondingly, the terminal device can request to acquire the other system information according to the content of the acquired latest first system information block SIB1, so as to ensure that the terminal device can correctly request the other system information.

[0016] The third, the change period corresponding to the first system information and the change period corresponding to the request for acquiring the second system information are different change periods.

[0017] Wherein, the terminal device acquires the first system information and the second system information in different change periods, and the system information may change in different change periods. Therefore, in this case, the terminal device can also actively request the network device to acquire the first system information block SIB1, avoiding the communication problems such as the terminal device failing to correctly camp on the cell or failing to correctly request other system information due to missing the system information change indication.

[0018] the fourth, the request for acquiring the second system information fails.

[0019] In the case that the terminal device fails to acquire the second system information based on the first system information, the terminal device may miss the system information change indication and fail to update the first system information in time. Therefore, in this case, the terminal device can also actively request the network device for acquiring the first system information block SIB1, so as to avoid the communication problems such as the terminal device failing to correctly camp on a cell or failing to correctly request other system information.

[0020] the fifth, there is uplink data to be transmitted and / or downlink data to be received.

[0021] In the case that the terminal device has uplink data to be transmitted and / or downlink data to be received, i.e., the terminal device needs to perform data transmission with the network device, in this case, in order to ensure the reliability and accuracy of data transmission, the terminal device can actively request the network device for acquiring the first system information block SIB1, so as to ensure that the terminal device can correctly camp on a cell and correctly request other system information.

[0022] the sixth, before the request for acquiring the second system information, the first system information is not in a sending state.

[0023] In the case that the terminal device can detect whether the first system information is in a sending state in the network environment, or optionally, the terminal device can detect whether the first system information is in a periodic sending state in the network environment, before the request for acquiring the second system information, if the first system information is not in a sending state, or optionally, if the first system information is not in a periodic sending state, the terminal device can determine that the target cell is a cell supporting on-demand first system information, and the terminal device may miss the system information change indication. Therefore, in this case, in order to ensure the communication reliability, the terminal device can actively request the network device for acquiring the first system information block SIB1, so as to ensure that the terminal device can correctly camp on a cell and correctly request other system information.

[0024] It should be noted that the system information request triggering condition in the embodiments of the present application is set to determine that the terminal device may miss the system information change indication, or to consider the requirement that the terminal device can correctly camp on a cell to achieve the data transmission requirement and the like. It can be understood that the present application does not limit the system information request triggering condition, and the skilled in the art can also set the condition according to the actual communication requirement.

[0025] In some possible implementation manners, the system information request comprises a first information request or a second information request; the first information request is used for requesting to acquire the first system information, and the second information request is used for requesting to acquire the first system information and the second system information.

[0026] In the embodiments of the present application, the system information request sent by the terminal device can comprise a first information request or a second information request. The first information request is used for requesting to acquire the first system information, that is, the first information request is used for requesting to acquire the first system information block SIB1. The second information request is used for requesting to acquire the first system information and the second system information, that is, the second information request is used for requesting to acquire the first system information block SIB1 and other system information OSI. On the one hand, the terminal device can first request to acquire the first system information block SIB1 and then request to acquire other system information OSI based on the content of the first system information block SIB1. On the other hand, the terminal device can also request to acquire the first system information block SIB1 and other system information OSI at one time, thereby providing different alternatives of the scheme.

[0027] In some possible implementation manners, the system information request comprises a first information request or a second information request; the first information request is used for requesting to acquire the first system information, and the second information request is used for requesting to acquire the first system information and the second system information.

[0028] In the first case in the system information request triggering condition provided in the embodiments of the present application, the terminal device can not receive the system information change indication in the change period corresponding to the first system information, which can specifically comprise that the interval between the time of acquiring the first system information and the end time of the change period corresponding to the first system information is less than a preset threshold. When the terminal device is less than the preset threshold from the end time of the change period corresponding to the first system information to the time of acquiring the first system information, the terminal device can miss the system information change indication sent by the network device. Therefore, the terminal device can request the network device to acquire the first system information.

[0029] In some possible implementation manners, the preset threshold is set according to the number of paging occasions PO in the change period.

[0030] The preset threshold can be set based on the number of paging occasions (PO) in the change period. Whether the terminal device misses the system information change indication is related to the time node of the terminal device acquiring the first system information in the change period. The preset threshold is set based on the number of paging occasions PO in the change period, which can ensure the accuracy of determining whether the terminal device misses the system information change indication in the system information request triggering condition.

[0031] It can be understood that the application does not limit the setting manner of the preset threshold, and the skilled in the art can also set the preset threshold by pre-setting a fixed numerical value.

[0032] In some possible implementation manners, the first system information comprises the preset threshold.

[0033] The preset threshold can be contained in the first system information, that is, the network side indicates the preset threshold to the terminal device, which provides an optional manner for the terminal device to acquire the preset threshold.

[0034] It can be understood that the application does not limit the manner of the terminal device acquiring the preset threshold, and the skilled in the art can also ensure the terminal device to acquire the preset threshold by pre-setting the preset threshold in the terminal device.

[0035] In some possible implementation manners, the acquisition of the first system information corresponds to a change period, and the request for acquiring the second system information corresponds to a change period, which are different change periods, comprising: acquiring the first system information in a first change period, and requesting to acquire the second system information in a second change period; or acquiring the first system information in a first change period, and requesting to acquire the first system information and the second system information in a second change period; wherein the second change period is different from the first change period, and the second change period is after the first change period.

[0036] In the third case in the system information request triggering condition provided in the embodiment of the application, the acquisition of the first system information corresponds to a change period, and the request for acquiring the second system information corresponds to a change period, which are different change periods, which can specifically include: acquiring the first system information in a first change period, and requesting to acquire the second system information in a second change period; or acquiring the first system information in a first change period, and requesting to acquire the first system information and the second system information in a second change period; wherein the second change period is different from the first change period, and the second change period is after the first change period. The terminal device acquires the first system information in a first period, and requests to acquire the second system information or requests to acquire the first system information and the second system information in a second period, the first period and the second period are different periods, and the second change period is after the first change period. The above cases can all determine that the acquisition of the first system information corresponds to a change period, and the request for acquiring the second system information corresponds to a change period, which are different change periods. It can be understood that in the embodiment of the application, the second period can be the next period of the first period, and the second period can not be the next period of the first period, for example, the second period is the next period of the next period of the first period, and the application does not limit this.

[0037] In some possible implementation manners, the failure of the request for the second system information includes: no response to the second information request is received within a preset time after the second information request is sent, or the second system information is not acquired or is not acquired within a preset time after the second information request is sent.

[0038] In the fourth case in the system information request triggering condition provided in the embodiments of the present application, the failure of the request for the second system information by the terminal device can specifically include: no response to the second information request is received within a preset time after the second information request is sent, or the second system information is not acquired or is not acquired within a preset time. The terminal device does not receive the response to the second information request or does not receive the second system information or does not receive the second system information within a preset time after the second information request is sent, which can be judged as the failure of the request for the second system information, that is, the terminal device may miss the system information change indication and cannot update the first system information in time. Therefore, in this case, the terminal device actively requests the network device for the first system information block SIB1, so as to avoid the communication problems such as the failure of the terminal device to camp on a cell or the failure of the terminal device to correctly request other system information due to the missed system information change indication.

[0039] In some possible implementation manners, the failure to acquire the second system information includes: no information is received at the time-frequency resource position indicated by the first system information, or other information except the requested second system information is received at the time-frequency resource position indicated by the first system information.

[0040] In some possible implementation manners, the failure to acquire the second system information includes: no information is received at the time-frequency resource position indicated by the first system information, or other information except the requested second system information is received at the time-frequency resource position indicated by the first system information.

[0041] In some possible implementation manners, the second information request includes: an initiated random access request or a request based on radio resource control RRC signaling.

[0042] The second information request includes an initiated random access request or a request based on radio resource control (RRC) signaling. Specifically, the terminal device can implement the second information request through a random access (RA) request, that is, the terminal device can request the first system information and the second system information through a random access procedure; or the terminal device can implement the second information request based on radio resource control (RRC) signaling, that is, the terminal device can request the first system information and the second system information through RRC signaling.

[0043] In some possible implementation manners, the terminal device satisfies the condition of camping on the target cell, including: the terminal device obtains a master information block and / or a first system information block of the target cell; and the master information block and / or the first system information block of the target cell indicates that the terminal device can camp on the target cell.

[0044] The terminal device obtains a master information block (MIB) and / or a first system information block (SIB1) of the target cell, and determines that the condition of camping on the target cell is satisfied based on the MIB and / or the SIB1 of the target cell. In this embodiment, the terminal device can determine whether the condition of camping on the target cell is satisfied based on the MIB and / or the SIB1 of the target cell, and further determine whether the system information request triggering condition is satisfied when the condition is satisfied, so as to determine whether to request to acquire the first system information, thereby ensuring the feasibility of the scheme.

[0045] The second aspect of the present application provides a system information acquisition method, which is applied to a terminal device supporting on-demand first system information (OD-SIB1), and includes the following steps: sending a first information request, the first information request being used to acquire a first system information block; and receiving a changed first system information block sent by a target cell when a system information sending triggering condition is satisfied, the target cell supporting OD-SIB1.

[0046] In the embodiment of the present application, the terminal device sends a first information request and receives a changed first system information block sent by a target cell when a system information sending triggering condition is satisfied. The terminal device sends a first information request used to request to acquire a first system information block, and the target cell sends the changed first system information block to the terminal device when the system information sending triggering condition is satisfied, instead of sending the first system information block before the change, that is, the target cell actively sends the changed first system information block to the terminal device when the system information sending triggering condition is satisfied, and the terminal device does not need to request the changed first system information block in a subsequent change period, thereby saving the resource occupation of the terminal device in the system information acquisition scheme.

[0047] In some possible implementation manners, the system information sending trigger condition comprises: receiving the first information request sent by the terminal device, or an interval between a time when the terminal device sends the first information request and an end time of a modification period corresponding to the first information request is less than a preset threshold.

[0048] Two optional system information sending trigger conditions are provided in the embodiments of the present application. When one of the conditions is met, the network device sends the modified first system information block, and specifically includes:

[0049] Firstly, receiving the first information request sent by the terminal device.

[0050] The network device can send the modified first system information block to the terminal device as soon as the first information request sent by the terminal device is received, so that the first system information block requested by the terminal device each time is the modified first system information block in the next modification period. The terminal device does not need to request the modified first system information block in the subsequent modification period, thereby saving resource occupation of the terminal device in the system information acquisition scheme.

[0051] Secondly, an interval between a time when the terminal device sends the first information request and an end time of a modification period corresponding to the first information request is less than a preset threshold.

[0052] The network device can determine whether the interval between the time when the terminal device sends the first information request and the end time of the modification period corresponding to the first information request is less than the preset threshold. Alternatively, the network device can also determine whether the interval between the time when the terminal device acquires the first system information and the end time of the modification period corresponding to the first information request is less than the preset threshold. If the interval is less than the preset threshold, the terminal device may miss the system information modification indication sent by the network device. In this case, if the terminal is sent the first system information block before modification, the terminal may fail to correctly camp on a cell or correctly acquire other system information due to missing the system information modification indication sent by the network device. Therefore, in this case, the network device can also actively send the modified first system information block to the terminal device, and the terminal device does not need to request the modified first system information block in the subsequent modification period, thereby saving resource occupation of the terminal device in the system information acquisition scheme, and ensuring that the terminal device will not fail to correctly camp on a cell or correctly acquire other system information due to missing the system information modification indication sent by the network device.

[0053] It should be noted that the preset threshold can be understood with reference to the embodiments provided in the first aspect of the present application, and will not be described herein.

[0054] The third aspect of the present application provides a method for acquiring system information, which is applied to a network device, the network device belongs to a network energy saving cell, the network energy saving cell supports on-demand first system information OD-SIB1, and the method comprises the following steps: receiving a first information request sent by a terminal device, the first information request being used for acquiring a first system information block; and sending a changed first system information block when a system information sending trigger condition is met, the terminal device supporting on-demand first system information OD-SIB1.

[0055] In the embodiments of the present application, after the network device receives the first information request sent by the terminal device and used for acquiring the first system information block, the network device sends the changed first system information block to the terminal device when the system information sending trigger condition is met, instead of sending the first system information block before the change, that is, the target cell actively sends the changed first system information block to the terminal device when the system information sending trigger condition is met, and the terminal device does not need to request the changed first system information block in the subsequent change period, thereby saving the resource occupation of the terminal device in the system information acquisition scheme.

[0056] In some possible implementation manners, the system information sending trigger condition comprises: receiving the first information request sent by the terminal device, or an interval between a time when the terminal device sends the first information request and an end time of a change period corresponding to the first information request is less than a preset threshold.

[0057] It should be noted that the description of the system information sending trigger condition can refer to the embodiments provided in the second aspect of the present application, and details are not repeated here.

[0058] The fourth aspect of the present application provides a terminal device, the terminal device supporting on-demand first system information OD-SIB1, and the terminal device comprises:

[0059] An information request module is configured to send a first information request, the first information request being used for acquiring a first system information block;

[0060] An information receiving module is configured to receive a changed first system information block sent by a target cell when a system information sending trigger condition is met, the target cell supporting on-demand first system information OD-SIB1.

[0061] In some possible implementation manners, the system information request triggering condition comprises at least one of the following conditions: there is a requirement for acquiring part or all of second system information, the second system information comprising system information other than the first system information; no system information change indication is received in a change period corresponding to the first system information; the change period corresponding to the first system information is different from a change period corresponding to the second system information requested to be acquired; the request for acquiring the second system information fails; there is uplink service data to be transmitted and / or downlink service data to be received; and the first system information is not in a sending state before the request for acquiring the second system information.

[0062] In a fourth aspect of the present application, the constituent modules of the terminal device can also perform the steps described in the foregoing first aspect and various possible implementation manners, for details, refer to the foregoing description of the first aspect and various possible implementation manners.

[0063] The fifth aspect of the present application provides a terminal device supporting on-demand first system information OD-SIB1, the terminal device comprising:

[0064] An information request module is configured to send a first information request, the first information request being used for acquiring a first system information block.

[0065] An information receiving module is configured to receive a changed first system information block sent by a target cell in a case where a system information sending triggering condition is met, the target cell supporting on-demand first system information OD-SIB1.

[0066] In some possible implementation manners, the system information sending triggering condition comprises: receiving the first information request sent by the terminal device, or an interval between a time point at which the terminal device sends the first information request and an end time point of a change period corresponding to the first information request is less than a preset threshold.

[0067] In the fifth aspect of the present application, the constituent modules of the terminal device can also perform the steps described in the foregoing second aspect and various possible implementation manners, for details, refer to the foregoing description of the second aspect and various possible implementation manners.

[0068] The sixth aspect of the present application provides a network device, the network device belonging to a network energy saving cell, the network energy saving cell supporting on-demand first system information OD-SIB1, the network device comprising:

[0069] A request receiving module is configured to receive a first information request sent by a terminal device, the first information request being used for acquiring a first system information block.

[0070] The information sending module is configured to send the changed first system information block when a system information sending trigger condition is met, and the terminal device supports on-demand first system information (OD-SIB1).

[0071] In some possible implementation manners, the system information sending trigger condition comprises: receiving the first information request sent by the terminal device, or an interval between a time point when the terminal device sends the first information request and an ending time point of a change period corresponding to the first information request is less than a preset threshold.

[0072] In a sixth aspect of the present disclosure, the component modules of the terminal device can further perform the steps described in the third aspect and the possible implementation manners, and details are described above in the third aspect and the possible implementation manners.

[0073] The seventh aspect of the present disclosure provides a communication apparatus, including a processor and a memory, the memory is configured to store a computer program, and the processor is configured to execute the computer program stored in the memory, so that the communication apparatus implements the system information acquisition method provided in the first aspect or the second aspect or the third aspect of the present disclosure.

[0074] In the seventh aspect of the present disclosure, the component modules of the communication apparatus can further perform the steps described in the first aspect or the second aspect or the third aspect and the possible implementation manners, and details are described above in the first aspect or the second aspect or the third aspect and the possible implementation manners.

[0075] The eighth aspect of the present disclosure provides a computer storage medium, configured to store a computer program, and the computer program is executed to implement the system information acquisition method provided in the first aspect or the second aspect or the third aspect of the present disclosure.

[0076] The ninth aspect of the present disclosure provides a computer program product including instructions, which, when executed on a computer, cause the computer to perform the system information acquisition method provided in the first aspect or the second aspect or the third aspect. BRIEF DESCRIPTION OF DRAWINGS

[0077] FIG. 1 is a system architecture diagram of a communication system provided by an embodiment of the present disclosure;

[0078] FIG. 2 is an interaction diagram of a system information acquisition process provided by an embodiment of the present disclosure;

[0079] FIG. 3 is a timing diagram of a terminal device missing a system information change indication provided by an embodiment of the present disclosure;

[0080] FIG. 4 is a flowchart of a system information acquisition method provided by an embodiment of the present disclosure;

[0081] FIG. 5 is a timing diagram of a system information acquisition method according to an embodiment of the present application;

[0082] FIG. 6 is a flowchart of another system information acquisition method according to an embodiment of the present application;

[0083] FIG. 7 is a timing diagram of another system information acquisition method according to an embodiment of the present application;

[0084] FIG. 8 is a structural diagram of a terminal device according to an embodiment of the present application;

[0085] FIG. 9 is a structural diagram of another terminal device according to an embodiment of the present application;

[0086] FIG. 10 is a structural diagram of a network device according to an embodiment of the present application;

[0087] FIG. 11 is a structural diagram of a communication apparatus according to an embodiment of the present application;

[0088] FIG. 12 is a structural diagram of another communication apparatus according to an embodiment of the present application;

[0089] FIG. 13 is a structural diagram of a computer program product according to an embodiment of the present application. DETAILED DESCRIPTION

[0090] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. The terms used in the following embodiments are only for the purpose of describing the specific embodiments and are not intended to be limiting to the present application. As used in the specification and the appended claims of the present application, the singular forms “a,” “an,” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “one or more” as used in the embodiments of the present application refer to one, two, or more than two; “and / or” describes the associated objects in the association relationship, which means that there can be three kinds of relationships; for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone, where A and B can be singular or plural. The character “ / ” generally represents an “or” relationship between the associated objects.

[0091] Reference within the specification to "one embodiment" or "an embodiment" or "some embodiments" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. The appearances of the phrase "in one embodiment" or "in some embodiments" in various places within the specification are not necessarily all referring to the same embodiment, nor are they necessarily referring to any particular embodiment. The terms "including," "comprising," "having," and variations thereof are meant to encompass the items listed thereafter and equivalents thereof as well as additional items.

[0092] In addition, in order to clearly describe the technical solutions of the embodiments of the present application, in the embodiments of the present application, the words "first", "second", etc. are used to distinguish the same or similar items with basically the same function and role. Those skilled in the art can understand that the words "first", "second", etc. do not limit the quantity and execution order, and the words "first", "second", etc. also do not necessarily mean different.

[0093] In the embodiments of the present application, the words "exemplary" or "for example" are used to mean serving as an example, instance, or illustration. Any embodiment or design presented as "exemplary" or "for example" in the embodiments of the present application is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the words "exemplary" or "for example" is intended to present concepts in a concrete manner, facilitating understanding.

[0094] It can be understood that the "embodiments" mentioned throughout the specification mean that the specific features, structures, or characteristics related to the embodiments are included in at least one embodiment of the present application. Therefore, the various embodiments throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. It can be understood that in various embodiments of the present application, the size of the serial number of each process does not mean the execution order, and the execution order of each process should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0095] It can be understood that in the present application, "when" and "if" both refer to making corresponding processing under certain objective circumstances, not limited to time, and do not require judgment actions when implementing, nor mean that there are other limitations.

[0096] It can be understood that some optional features in the embodiments of the present application can be implemented independently in some scenarios, solve corresponding technical problems, and achieve corresponding effects, without relying on other features, such as the scheme currently based on. In some scenarios, it can also be combined with other features according to needs. Correspondingly, the apparatus given in the embodiments of the present application can also implement these features or functions accordingly, and details are not described here.

[0097] In the present application, the same or similar parts between various embodiments can be mutually referred to, unless otherwise specified. In various embodiments of the present application, the terms and / or descriptions between different embodiments are consistent and can be mutually referred to, unless otherwise specified and logically conflicted. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationship. The implementation modes of the present application described below do not constitute a limitation on the protection scope of the present application.

[0098] The embodiments of the present application are applied to various communication systems, which can be a second generation (2G) communication system, a third generation (3G) communication system, an LTE system, a fifth generation (5G) communication system, a hybrid architecture of LTE and 5G, a 5G new radio (5G NR) system, and a new communication system in future communication development.

[0099] The communication system includes a first device and a second device. The first device can be a network-side device for providing network communication functions, and is also called a network device or a network element in some cases. The network device can usually be a base station (including a functional unit of the base station or a combination of functional units of the base station) or a core network unit. The core network unit can be a functional unit in the core network, including but not limited to an access and mobility management function (AMF) unit or a session management function (SMF) unit. The second device can be a device accessing the network, which can usually be a terminal. An example of the communication system is shown in FIG. 1, which includes a base station 1 and a terminal 2.

[0100] In the embodiments provided in the present application, the base station can be any kind of device with wireless transceiving function, including but not limited to: an evolved Node B (eNB or e-NodeB) in long term evolution (LTE), a base station (gNodeB or gNB) or transmission receiving point (TRP) in new radio (NR), a base station in subsequent evolution of 3GPP, an access node in a Wi-Fi system, a wireless relay node, a wireless backhaul node, etc. The base station can be: a macro base station, a micro base station, a pico base station, a micro station, a relay station, or a balloon station, etc. The base station can include one or more co-sited or non-co-sited transmission points (TRPs). The base station can also be a radio controller in a cloud radio access network (CRAN) scenario, a centralized unit (CU), and / or a distributed unit (DU). The base station can communicate with the terminal, or communicate with the terminal through the relay station. The terminal can communicate with multiple base stations of different technologies, for example, the terminal can communicate with a base station supporting an LTE network, and can also communicate with a base station supporting a 5G network, and can also communicate with a base station supporting an LTE network and a base station supporting a 5G network in dual connectivity.

[0101] In the embodiments provided by the present application, the terminal can be various forms, for example, a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a vehicle-mounted terminal device, a wireless terminal in self driving, a wireless terminal in remote medical, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, a wearable terminal device, and the like. The terminal can also be referred to as a terminal device, a user equipment (UE), an access terminal device, a vehicle-mounted terminal, an industrial control terminal, a UE unit, a UE station, a mobile station, a mobile station, a remote station, a remote terminal device, a mobile device, a UE terminal device, a terminal device, a wireless communication device, a UE agent, or a UE apparatus, and the like. The terminal can also be a fixed terminal or a mobile terminal.

[0102] It should be noted that the communication system described in the embodiments of the present application is for more clearly illustrating the technical solutions of the embodiments of the present application, and does not constitute a limitation on the technical solutions provided by the embodiments of the present application. Those skilled in the art can know that, with the evolution of network architecture and the appearance of new business scenarios, the technical solutions provided by the embodiments of the present application are also applicable to similar technical problems.

[0103] FIG. 2 shows an interaction diagram of a system information acquisition process, wherein Cell A is a cell that periodically transmits a first system information block (SIB1) persistently, and NES Cell is a network energy saving cell that can obtain energy saving gain by non-persistently transmitting the first system information block (SIB1) periodically, and the NES Cell is also referred to as a cell supporting on-demand first system information (On Demand SIB1).

[0104] In step S1, the terminal device receives uplink wake-up signal (WUS) configuration information (Configuration), i.e., first system information request configuration information, in Cell A; in step S2, the terminal device transmits an uplink wake-up signal to request the first system information block (SIB1) from the NES Cell; and in step S3, the terminal device obtains the first system information block (SIB1) transmitted by the network energy saving cell (NES Cell).

[0105] It can be seen that in the network energy saving cell scenario, the cell no longer periodically issues the first system information SIB1, and the terminal device can request and receive the first system information according to the demand, for example, receives the information change indication (SI change indication) informed by the cell through the short message in the current modification period (Modification Period, MP), and receives the modified first system information issued by the cell at the beginning of the next modification period. The modification period is used to describe the time period in which the system information in the communication system changes, and the short message is sent at the paging occasion (Paging Occasion, PO) of the terminal device.

[0106] However, the terminal device may miss the system information change indication, for example, the terminal device misses the end of the corresponding modification indication or the end of the modification period after obtaining the first system information, so that the terminal device does not receive the modified first system information at the beginning of the next modification period, and the terminal device may not be able to correctly camp on the cell or correctly request other system information OSI.

[0107] A timing diagram of a terminal device missing a system information change indication is shown in combination with FIG. 3.

[0108] The modification period MP2 is the next modification period of the modification period MP1, and the cell will send the modified system information in MP2, and the cell will issue the system information change indication (SI modification in the figure) in MP1.

[0109] The terminal device UE1 receives the information change indication after requesting and obtaining SIB1, and the terminal device UE2 does not receive the information change indication after requesting and obtaining SIB1 because the UE2 requests and obtains SIB1 at the end of MP1 (the period in which the cell no longer issues the system information change indication).

[0110] Then, in the MP2, since the UE1 receives the information change indication in the MP1, the UE1 can start receiving the changed first system information block New SIB1 issued by the cell in the MP2, and accordingly, the UE1 can correctly request the other system information OSI or correctly camp on the cell in the MP2. Since the UE2 does not receive the information change indication in the MP1, the UE2 no longer receives the changed first system information block New SIB1 issued by the cell in the MP2, and accordingly, the UE2 can not correctly camp on the cell or correctly request the other system information OSI in the MP2 and after the MP2.

[0111] In order to enable the terminal device to acquire the changed system information in time in the case that the terminal device misses the system information change indication and ensure that the terminal device can correctly camp on in the network energy saving cell scenario, the embodiment of the present application provides a system information acquisition method, which is applied to a terminal device supporting on-demand first system information, and the method comprises the following steps: the terminal device sends a system information request under the condition that the terminal device meets the condition of camping on a target cell and the system information request triggering condition, and the system information request is used to acquire the first system information, the first system information comprises a first system information block, and the target cell supports on-demand first system information. As can be seen, the terminal device actively requests the network device to acquire the first system information block SIB1 under the condition that the terminal device meets the camping-on condition of the cell and the system information request triggering condition, and the terminal device can acquire the changed system information in time even if the terminal device misses the system information change indication. Since the SIB1 comprises the necessary content for the terminal device to select and camp on the cell, it is ensured that the terminal device can correctly camp on in the network energy saving cell scenario, and the communication problems such as the terminal device failing to correctly camp on the cell or failing to correctly request the other system information due to missing the system information change indication are avoided, and the communication reliability in the network energy saving cell scenario is improved.

[0112] In order to make the technical solutions of the present application clearer and easier to understand, the system information acquisition method provided by the embodiment of the present application will be introduced below in combination with the drawings.

[0113] Referring to the flowchart of the system information acquisition method shown in FIG. 4, the method comprises the following steps:

[0114] S401: The terminal device meets the condition of camping on a target cell and the system information request triggering condition, and sends a system information request.

[0115] Specifically, the system information request is used to acquire the first system information, the first system information comprises a first system information block SIB1, the target cell is a cell supporting on-demand first system information (On Demand SIB1), and the terminal device actively sends the system information request for requesting to acquire the first system information under the condition that the terminal device judges that the terminal device meets the condition of camping on the target cell and meets the system information request triggering condition.

[0116] It can be understood that the target cell can also be referred to as a network energy saving cell, or a cell in which the first system information is not periodically transmitted, which is not limited in the present application.

[0117] In the present application, the timing of sending the system information request by the terminal device is not limited, the terminal device can send the system information request in the change period in which the condition of camping on the target cell and the system information request triggering condition are determined to be met, or in the next change period in which the condition of camping on the target cell and the system information request triggering condition are determined to be met, or periodically based on a predetermined frequency.

[0118] In an optional embodiment, the terminal device sends the system information request in the next change period in which the condition of camping on the target cell and the system information request triggering condition are determined to be met. For example, the terminal device determines that the condition of camping on the target cell and the system information request triggering condition are met in the change period MP1, and sends the system information request in the next change period MP2 of MP1.

[0119] It should be noted that the system information request triggering condition provided in the embodiments of the present application is to determine that the terminal device may miss the system information change indication, or to require the terminal device to correctly camp on the cell to achieve the consideration of aspects such as data transmission requirements. It can be understood that the system information request triggering condition is not limited in the present application, and the skilled in the art can also set it according to the actual communication requirements.

[0120] In an optional embodiment, the system information request includes: a first information request, or a second information request; wherein the first information request is used to request to obtain the first system information, and the second information request is used to request to obtain the first system information and the second system information.

[0121] In the present application, the first information request is used to request to obtain the first system information block SIB1, and the second information request is used to request to obtain the first system information block SIB1 and other system information. When initiating the system information request, the terminal device can first request to obtain the first system information block SIB1, and then request to obtain other system information based on the first system information block SIB1; or can request to obtain the first system information block SIB1 and other system information at one time.

[0122] In an optional implementation, the system information request triggering condition provided in the embodiments of the present application can include at least one of the following conditions: no system information change indication is received in a change period corresponding to the first system information; there is a requirement for acquiring part or all of second system information, the second system information including other system information in addition to the first system information; the change period for acquiring the first system information is different from the change period for requesting to acquire the second system information; the request for acquiring the second system information fails; there is uplink data to be transmitted and / or downlink data to be received; and the first system information is not in a sending state before the request for acquiring the second system information.

[0123] Six optional system information request triggering conditions are provided in the embodiments of the present application. When at least one of the conditions is met, the terminal device can actively request the network device to acquire the first system information block, and the conditions include the following.

[0124] Firstly, no system information change indication is received in a change period corresponding to the first system information.

[0125] When the terminal device does not receive the system information change indication in the change period corresponding to the first system information, the terminal device may miss the system information change indication sent by the network side at the moment of entering the target cell, for example, the terminal device acquires the first system information in a change period and the corresponding change indication sending ends or the change period ends. In this case, the terminal device can actively request the network device to acquire the first system information block SIB1.

[0126] As shown in FIG. 3, the terminal device UE2 requests to acquire the first system information block SIB1 in MP1 at the end of MP1, so the UE2 does not receive the system information change indication sent by the cell. Therefore, the UE2 does not receive the changed first system information block New SIB1 in MP2, which further causes the UE2 to fail to correctly camp on the cell or correctly request other system information in MP2.

[0127] Therefore, the embodiments of the present application provide a system information acquisition method. As shown in FIG. 4, a timing diagram of a system information acquisition method, when the UE2 meets the condition that no system information change indication is received in a change period corresponding to the first system information and meets the condition of camping on the target cell, the UE2 can actively send a system information request in MP2 to acquire the changed first system information block, thereby avoiding the terminal device from failing to correctly camp on the cell or correctly request other system information due to missing the system information change indication.

[0128] In an optional implementation, the acquiring the system information change indication in the modification period corresponding to the first system information comprises: acquiring the interval between the time of acquiring the first system information and the end time of the modification period corresponding to the first system information is less than a preset threshold.

[0129] For example, when the time of acquiring the first system information is less than the end time of the modification period corresponding to the first system information by less than a preset threshold, the terminal device may miss the system information change indication sent by the network device, and thus the terminal device can request to acquire the first system information.

[0130] In an optional implementation, the preset threshold is set according to the number of paging occasions (PO) in the modification period.

[0131] The preset threshold can be set based on the number of paging occasions (PO) in the modification period. Whether the terminal device misses the system information change indication is related to the time node of acquiring the first system information in the modification period. The preset threshold is set based on the number of paging occasions (PO) in the modification period, which can ensure the accuracy of determining whether the terminal device misses the system information change indication in the system information request triggering condition.

[0132] In an optional implementation, the preset threshold can be associated with the number of radio frames or time slots or symbols.

[0133] It can be understood that the present application does not limit the setting method of the preset threshold, and a person skilled in the art can also set the preset threshold by pre-setting a fixed value.

[0134] In an optional implementation, the first system information comprises the preset threshold.

[0135] The preset threshold can be included in the first system information, that is, the network side indicates the preset threshold to the terminal device, which provides an optional way for the terminal device to acquire the preset threshold.

[0136] It can be understood that the present application does not limit the way of acquiring the preset threshold by the terminal device, and a person skilled in the art can also ensure that the terminal device acquires the preset threshold by pre-setting the preset threshold in the terminal device.

[0137] The second system information includes other system information in addition to the first system information and the master information block (MIB).

[0138] When the terminal device has a demand for acquiring part or all of the other system information, the terminal device can actively request the network device to acquire the first system information block SIB1. Since the first system information block SIB1 also includes scheduling information (such as system information block SIB to system information SI message mapping, periodicity, window size, and the like) of the other system information OSI, when the terminal device has a demand for acquiring the other system information, the terminal device should actively request the network device to acquire the first system information block SIB1, so as to ensure that the terminal device can acquire the latest first system information block SIB1 (in the case of system information change, the SIB1 after the change). Correspondingly, the terminal device can request to acquire the other system information according to the content of the acquired latest first system information block SIB1, so as to ensure that the terminal device can correctly request the other system information.

[0139] It should be noted that the second system information includes other system information in addition to the first system information block and the master information block MIB, for example: the second system information includes: a second system information block (System Information Block Type 2, SIB2), a third system information block (System Information Block Type 3, SIB3), a fourth system information block (System Information Block Type 4, SIB4), and other system information blocks or system information containing the system information blocks, which are not limited in the present application.

[0140] Thirdly, the change period corresponding to the acquisition of the first system information is different from the change period corresponding to the request for the acquisition of the second system information.

[0141] In the different change periods, system information change may occur. Therefore, in this case, the terminal device can also actively request the network device to acquire the first system information block SIB1, so as to avoid the communication problems such as the terminal device failing to correctly camp on the cell or failing to correctly request the other system information due to missing the system information change indication.

[0142] In an optional implementation, the change period corresponding to the acquisition of the first system information is different from the change period corresponding to the request for the acquisition of the second system information, and specifically includes: acquiring the first system information in a first change period and requesting to acquire the second system information in a second change period; or acquiring the first system information in the first change period and requesting to acquire the first system information and the second system information in the second change period; wherein the second change period is different from the first change period, and the second change period is after the first change period.

[0143] The second change period is different from the first change period, and the second change period is after the first change period. The terminal device acquires the first system information in the first period, and requests to acquire the second system information or requests to acquire the first system information and the second system information in the second period. The first period and the second period are different periods, and the second change period is after the first change period. In the above cases, it can be determined that the change period corresponding to the acquisition of the first system information and the change period corresponding to the request to acquire the second system information are different change periods. It can be understood that in the embodiments of the present application, the second period can be the next period of the first period, and the second period can also not be the next period of the first period, for example, the second period is the next period of the next period of the first period, and the present application does not make any limitation.

[0144] For example, referring to FIG. 3, the terminal device UE2 acquires the first system information (that is, SIB1) in MP1, and requests to acquire the second system information (that is, OSI) in MP2. Since the system information in the cell in MP2 can change compared with MP1, and the UE2 can miss the system information change indication in MP1, in order to ensure that the UE2 can correctly request other system information, the UE2 can send a system information request in MP2 to ensure that the latest first system information block SIB1 is obtained.

[0145] Fourthly, the request to acquire the second system information fails.

[0146] When the terminal device fails to request to acquire the second system information based on the first system information, the terminal device can miss the system information change indication and fail to update the first system information in time. Therefore, in this case, the terminal device can also actively request the network device to acquire the first system information block SIB1, so as to avoid the communication problems such as the terminal device failing to correctly camp on the cell or failing to correctly request other system information due to missing the system information change indication.

[0147] In an optional implementation, the request to acquire the second system information fails, including: after sending the second information request, no response to the second information request is received within a preset time, or after sending the second information request, the second system information is not acquired or is not acquired within a preset time.

[0148] The terminal device can determine that the request for obtaining the second system information fails when the terminal device does not receive a response to the second information request or does not receive the second system information or does not receive the second system information within a preset time after sending the second information request. That is, the terminal device can miss the system information change indication and fail to update the first system information in time. Therefore, in this case, the terminal device can request to obtain the first system information block SIB1, so as to avoid the communication problems such as failure to correctly camp on a cell or failure to correctly request other system information due to missing the system information change indication.

[0149] In an optional implementation, the terminal device does not obtain the second system information after sending the second information request, including that: no information is received at the time-frequency resource position indicated by the first system information, or other information than the requested second system information is received at the time-frequency resource position indicated by the first system information.

[0150] The terminal device does not obtain the second system information, specifically, no information is received at the time-frequency resource position indicated by the first system information, or non-requested second system information is received at the time-frequency resource position indicated by the first system information.

[0151] It can be understood that the first system information block SIB1 contains SI scheduling information of other system information, and the time-frequency resource position indicated by the first system information refers to a position corresponding to a time-frequency domain resource for obtaining other system information OSI indicated by the first system information block SIB1.

[0152] The fifth, there is uplink data to be transmitted and / or downlink data to be received.

[0153] In the case that the terminal device has uplink data to be transmitted and / or downlink data to be received, that is, the terminal device needs to perform data transmission with the network device, the terminal device can actively request the network device to obtain the first system information block SIB1, so as to ensure that the terminal device can correctly camp on a cell and correctly request other system information.

[0154] The sixth, the first system information is not in a sending state before the request for obtaining the second system information.

[0155] In the embodiment, the terminal device can detect whether the first system information in the network environment is in a sending state, or alternatively, the terminal device can detect whether the first system information in the network environment is in a periodic sending state. Before the request for the second system information, if the first system information is not in the sending state, or alternatively, if the first system information is not in the periodic sending state, the terminal device can determine that the target cell is a cell supporting the on-demand first system information, and the terminal device can miss the system information change indication. Therefore, in this case, to ensure the communication reliability, the terminal device can actively request the network device for the first system information block SIB1, so as to ensure that the terminal device can correctly camp on the cell and correctly request other system information.

[0156] In an optional embodiment, the condition for the terminal device to camp on the target cell includes that the terminal device obtains the master information block and / or the first system information block of the target cell, and the master information block and / or the first system information block of the target cell indicates that the terminal device can camp on the target cell.

[0157] In an optional embodiment, the condition for the terminal device to camp on the target cell includes that the terminal device obtains the master information block and / or the first system information block of the target cell, and the master information block and / or the first system information block of the target cell indicates that the terminal device can camp on the target cell.

[0158] In the embodiment, the terminal device can determine whether the condition for camping on the target cell is met based on the MIB and / or the SIB1 of the target cell, and further determine whether the system information request triggering condition is met when the condition is met, so as to determine whether to request the first system information.

[0159] It should be noted that the embodiment does not limit the acquisition manner of the MIB and the SIB1 of the target cell, and the terminal device can request the MIB and the SIB1 of the target cell from the target cell, or acquire the MIB and the SIB1 of the target cell from other cells, such as acquiring the MIB and the SIB1 of the target cell from the neighboring cell of the target cell.

[0160] In an optional embodiment, the second information request includes an initiated random access request or a request based on radio resource control RRC signaling.

[0161] Specifically, the terminal device can implement the second information request through a random access (RA) request, i.e., the terminal device can request the first system information and the second system information through a random access procedure; or the terminal device can implement the second information request based on radio resource control (RRC) signaling, i.e., the terminal device can request the first system information and the second system information through RRC signaling.

[0162] In actual application, the terminal device can implement the second information request through a random access (RA) request, and the terminal device receives system information request configuration issued by a cell, the system information request configuration can include at least one of a first system information request resource, a second system information request resource, and a third system information request resource, wherein the first system information request resource is used to request a first system information block (SIB1), the second system information request resource is used to request other system information, and the third system information request resource is used to request the first system information block (SIB1) and the other system information (OSI).

[0163] Exemplarily, the second system information request resource and the third system information request resource can be:

[0164] Si-requestResources is the second system information request resource;

[0165] Si-RequestResourceforSIB1andOSI is the third system information request resource;

[0166] Therefore, the terminal device can initiate a random access request based on Si-RequestResourceforSIB1andOSI to implement the second information request.

[0167] The terminal device can also implement the second information request based on radio resource control (RRC) signaling, exemplarily, the terminal device indicates to request the first system information and the second system information in RRCSystemInfoRequest; or the terminal device indicates to request the first system information and the second system information in DedicatedSIBRequest. The present application does not make specific limitation on the form of the second information request, and the skilled in the art can make a selection according to specific communication scenarios.

[0168] S402: The target cell receives the system information request sent by the terminal device, and sends a first system information block (SIB1).

[0169] The target cell supports on-demand first system information (On Demand SIB1), and therefore, after receiving the system information request sent by the terminal device, the target cell sends the first system information block SIB1, so that the terminal device can obtain the latest first system information block SIB1, and ensure that the terminal device in the network energy saving cell scenario can correctly camp or correctly obtain other system information.

[0170] From the above, the embodiment of the application provides a system information acquisition method. The terminal device actively requests a network device to acquire the first system information block SIB1 when the cell camping condition and the system information request triggering condition are met. Even if the terminal device misses the system information change indication, the terminal device can still acquire the changed system information in time. Since the SIB1 includes the necessary content for cell selection and camping of the terminal device, it is ensured that the terminal device in the network energy saving cell scenario can correctly camp, and communication problems such as the terminal device being unable to correctly camp in the cell or being unable to correctly request other system information due to missing the system information change indication are avoided.

[0171] The embodiment of the application also provides another system information acquisition method. Referring to the flowchart of the another system information acquisition method shown in FIG. 6, the method comprises the following steps.

[0172] S601: The terminal device sends a first information request, and the first information request is used to acquire the first system information block.

[0173] The terminal device is a device supporting on-demand first system information. After the terminal device selects or reselects a target cell, the terminal device can send a first information request used to acquire the first system information block to the target cell. The target cell is also a cell supporting on-demand first system information.

[0174] S602: The terminal device receives the changed first system information block sent by the target cell when the system information sending triggering condition is met.

[0175] The target cell sends the changed first system information block to the terminal device when it is determined that the system information sending triggering condition is met, instead of sending the first system information block before the change. FIG. 7 shows a timing diagram of the system information acquisition method provided by the embodiment. The change period MP2 is the next change period of the change period MP1. The system information will change in the MP2. If the terminal device UE2 requests the first system information block in the MP1, the network device sends the changed first system information block to the UE2. The changed first system information block is the changed first system information block sent in the MP2 and after the MP2. Therefore, the UE2 can correctly determine other system information based on the changed first system information block in the MP2.

[0176] It can be understood that in the embodiment, the target cell can predictively and in advance issue the first system information block corresponding to the next change period (i.e., the changed first system information block) to the terminal device, and the network device implements the issuance of the changed first system information block without the participation of the terminal, which is not sensed by the terminal and reduces the resource occupation of the terminal device in the acquisition scheme of the system information.

[0177] It should be noted that in the embodiment of the present application, the network device belongs to the target cell, and the target cell sending the changed first system information block is equivalent to the network device sending the changed first system information block.

[0178] In an optional embodiment, the system information sending trigger condition includes: receiving the first information request sent by the terminal device, or the interval between the time when the terminal device sends the first information request and the end time of the change period corresponding to the sending of the first information request is less than a preset threshold.

[0179] Specifically, two optional system information sending trigger conditions are provided in the embodiment of the present application. When one of the conditions is met, the network device sends the changed first system information block, and specifically includes:

[0180] First, receiving the first information request sent by the terminal device.

[0181] The network device can send the changed first system information block to the terminal device as soon as it receives the first information request sent by the terminal device, so that the first system information block requested by the terminal device each time is the changed first system information block in the next change period (if there is no change action in the system information in the next change period, the network device can choose to send the current first system information block or choose to send, and the embodiment does not limit), and the terminal device does not need to request the changed first system information block in the subsequent change period, thereby saving the resource occupation of the terminal device in the acquisition scheme of the system information.

[0182] Second, the interval between the time when the terminal device sends the first information request and the end time of the change period corresponding to the sending of the first information request is less than a preset threshold.

[0183] The network device can determine whether the time interval between the time when the terminal device sends the first information request and the time when the first information request corresponding change period ends is less than a preset threshold. Alternatively, the network device can also determine whether the time interval between the time when the terminal device acquires the first system information and the time when the first information request corresponding change period ends is less than a preset threshold. If it is less than the preset threshold, the terminal device can miss the system information change indication sent by the network device. At this time, if the terminal is sent the first system information block before the change, the terminal can miss the system information change indication sent by the network device, resulting in subsequent inability to correctly camp on the cell or correctly acquire other system information. Therefore, in this case, the network device can also actively send the first system information block after the change to the terminal device. The terminal device does not need to request the first system information block after the change in the subsequent change period, saving the resource occupation of the terminal device in the system information acquisition scheme, and ensuring that the terminal device will not miss the system information change indication sent by the network device, resulting in the inability to correctly camp on the cell or correctly acquire other system information.

[0184] It can be seen that the embodiment of the application provides a system information acquisition method. The terminal device sends a first information request for requesting to acquire a first system information block. The target cell sends the first system information block after the change to the terminal device when the system information sending trigger condition is met, instead of sending the first system information block before the change. That is, the target cell actively sends the first system information block after the change to the terminal device when the system information sending trigger condition is met. The terminal device does not need to request the first system information block after the change in the subsequent change period, saving the resource occupation of the terminal device in the system information acquisition scheme.

[0185] It should be noted that the preset threshold can be seen from the foregoing embodiments of the application, and will not be described here.

[0186] Referring to a structural schematic diagram of a terminal device shown in FIG. 8, the terminal device supports on-demand first system information. The terminal device includes:

[0187] The information request module 801 is configured to send a system information request under the condition of camping on a target cell and the system information request trigger condition. The system information request is used to acquire first system information. The first system information includes a first system information block. The target cell supports on-demand first system information.

[0188] In an alternative implementation, the system information request triggering condition comprises at least one of the following conditions: there is a requirement to acquire part or all of second system information, the second system information comprising system information other than the first system information; no system information change indication is received within a change period corresponding to the first system information; the change period corresponding to the first system information is different from a change period corresponding to the second system information; the request to acquire the second system information fails; there is uplink data to be transmitted and / or downlink data to be received; and the first system information is not in a sending state before the request to acquire the second system information.

[0189] It should be noted that the steps performed by the modules of the terminal device and the related technical features provided in the embodiments of the present application correspond to the method for acquiring system information of a terminal device provided in the foregoing embodiments of the present application. The description of the device part can be found in the foregoing embodiments of the method part, and thus is not repeated here.

[0190] Referring to a structural schematic diagram of a terminal device shown in FIG. 9, the terminal device supports on-demand first system information. The terminal device comprises:

[0191] The information request module 901 is configured to send a first information request, the first information request being used to acquire a first system information block.

[0192] The information receiving module 902 is configured to receive a changed first system information block sent by a target cell in response to a system information sending triggering condition being met, the target cell supporting on-demand first system information.

[0193] In an alternative implementation, the system information sending triggering condition comprises: receiving the first information request sent by the terminal device, or the interval between the time when the terminal device sends the first information request and the end time of the change period corresponding to the first information request is less than a preset threshold.

[0194] It should be noted that the steps performed by the modules of the terminal device and the related technical features provided in the embodiments of the present application correspond to the method for acquiring system information of a terminal device provided in the foregoing embodiments of the present application. The description of the device part can be found in the foregoing embodiments of the method part, and thus is not repeated here.

[0195] Referring to a structural schematic diagram of a network device shown in FIG. 10, the network device belongs to a network energy saving cell, and the network energy saving cell supports on-demand first system information. The network device comprises:

[0196] The request receiving module 1001 is configured to receive a first information request sent by a terminal device, the first information request being used to acquire a first system information block.

[0197] The information sending module 1002 is configured to send the changed first system information block when the system information sending trigger condition is met, and the terminal device supports on-demand first system information.

[0198] In an optional implementation, the system information sending trigger condition comprises: receiving the first information request sent by the terminal device, or an interval between a time point when the terminal device sends the first information request and an ending time point of a change period corresponding to the first information request is less than a preset threshold.

[0199] It should be noted that the steps performed by each module of the network device and the related technical features provided in the embodiments of the present application correspond to the method for acquiring system information of a terminal device provided in the foregoing embodiments of the present application. The description of the device part can be referred to the foregoing method embodiments, and details are not described herein.

[0200] FIG. 11 is a structural schematic diagram of a communication apparatus provided in an embodiment of the present application. The communication apparatus can be a network device, including but not limited to a base station, a core network unit. FIG. 11 shows a simplified structural schematic diagram of a base station. The base station 1100 includes a processor 1110 part, a memory 1120 part, and a transceiver 1130 part. The processor 1110 part is mainly used for baseband processing, controlling the base station, and the like; the processor 1110 part is usually the control center of the base station, and can be referred to as a processor, which is used to control the base station to perform the processing operation of the first device side in the foregoing method embodiments. The memory 1120 part is mainly used for storing computer program codes and data. The transceiver 1130 part is mainly used for transceiving radio frequency signals and converting radio frequency signals and baseband signals; the transceiver 1130 part can be referred to as a transceiving module, a transceiver, a transceiving circuit, or a transceiver, etc. The transceiving module of the transceiver 1130 part, which can also be referred to as a transceiver or a transceiver, includes an antenna 1133 and a radio frequency circuit (not shown in the figure), wherein the radio frequency circuit is mainly used for radio frequency processing. Optionally, the devices for realizing the receiving function in the transceiver 1130 part can be regarded as a receiver, and the devices for realizing the sending function can be regarded as a transmitter, that is, the transceiver 1130 part includes a receiver 1132 and a transmitter 1131. The receiver can also be referred to as a receiving module, a receiver, or a receiving circuit, etc., and the transmitter can be referred to as a transmitting module, a transmitter, or a transmitting circuit, etc.

[0201] The processor 1110 part and the memory 1120 part can include one or more boards, each of which can include one or more processors and one or more memories. The processor is used to read and execute the program in the memory to implement the baseband processing function and the control of the base station. If there are multiple boards, the boards can be interconnected to enhance the processing capability. As an optional implementation, multiple boards can also share one or more processors, or multiple boards can share one or more memories, or multiple boards can share one or more processors at the same time.

[0202] For example, in an implementation, the transceiver module of the transceiver 1130 part is used to perform the transceiving related processes performed by the base station (first device) in the foregoing method embodiments. The processor of the processor 1110 part is used to perform the processing related processes performed by the base station in the foregoing method embodiments.

[0203] It should be understood that FIG. 11 is only an example and not a limitation, and the network device described above including the processor, the memory and the transceiver can not depend on the structure shown in FIG. 11.

[0204] FIG. 12 is an example of the composition of another communication apparatus provided in the embodiments of the present application. The communication apparatus can be a terminal device, which can be a terminal, including but not limited to a mobile phone, a smart wearable device (such as a smart watch), and the like. Taking a mobile phone as an example, the communication apparatus can include a processor 1210, an external memory interface 1220, an internal memory 1221, a display screen 1230, a camera 1240, an antenna 1, an antenna 2, a mobile communication module 1250, and a wireless communication module 1260, and the like.

[0205] It can be understood that the structure shown in the embodiments does not constitute a specific limitation on the communication apparatus. In other embodiments, the communication apparatus can include more or fewer components than those shown, or combine certain components, or split certain components, or different arrangement of components. The components shown can be implemented in hardware, software, or a combination of software and hardware.

[0206] The processor 1210 can include one or more processing units, for example: the processor 1210 can include an application processor (AP), a modem processor, a graphics processing unit (GPU), an image signal processor (ISP), a controller, a video codec, a digital signal processor (DSP), a baseband processor, and / or a neural-network processing unit (NPU), etc. Among them, different processing units can be independent devices, or can be integrated in one or more processors.

[0207] It can be understood that the interface connection relationship between the modules shown in the embodiment is only illustrative and does not constitute a structural limitation of the communication device. In other embodiments of the present application, the communication device can also use different interface connection modes or combinations of multiple interface connection modes in the above embodiments.

[0208] The external memory interface 1220 can be used to connect an external memory card, such as a Micro SD card, to expand the storage capacity of the communication device. The external memory card communicates with the processor 1210 through the external memory interface 1220 to realize the data storage function. For example, files such as music and video are saved in the external memory card.

[0209] The internal memory 1221 can be used to store computer executable program codes, and the executable program codes include instructions. The processor 1210 executes various function applications and data processing of the communication device by running the instructions stored in the internal memory 1221. The internal memory 1221 can include a program storage area and a data storage area. The program storage area can store an operating system, at least one application program required by a function (such as a sound playing function, an image playing function, etc.), etc. The data storage area can store data created during the use of the communication device (such as audio data, a phone book, etc.), etc. In addition, the internal memory 1221 can include a high-speed random access memory, and can also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, a universal flash storage (UFS), etc. The processor 1210 executes various function applications and data processing of the communication device by running the instructions stored in the internal memory 1221 and / or the instructions stored in the memory arranged in the processor.

[0210] The wireless communication function of the communication device can be implemented by the antenna 1, the antenna 2, the mobile communication module 1250, the wireless communication module 1260, the modem processor, the baseband processor, and the like.

[0211] The antenna 1 and the antenna 2 are used for transmitting and receiving electromagnetic wave signals. Each antenna in the communication device can be used to cover a single or multiple communication frequency bands. Different antennas can also be multiplexed to improve the utilization of the antennas. For example, the antenna 1 can be multiplexed as a diversity antenna of a wireless local area network. In some other embodiments, the antennas can be used in combination with a tuning switch.

[0212] The mobile communication module 1250 can provide a solution including 2G / 3G / 4G / 5G wireless communication applied to the communication device. The mobile communication module 1250 can include at least one filter, a switch, a power amplifier, a low noise amplifier (LNA), and the like. The mobile communication module 1250 can receive electromagnetic waves by the antenna 1, and perform filtering, amplification, and the like on the received electromagnetic waves, and transmit the processed electromagnetic waves to the modem processor for demodulation. The mobile communication module 1250 can also amplify the signals modulated by the modem processor, and convert the signals into electromagnetic waves radiated by the antenna 1. In some embodiments, at least part of the functional modules of the mobile communication module 1250 can be arranged in the processor 1210. In some embodiments, at least part of the functional modules of the mobile communication module 1250 and at least part of the modules of the processor 1210 can be arranged in the same device.

[0213] In some embodiments of the present application, the communication device initiates or receives a call request by the mobile communication module 1250 and the antenna 1.

[0214] In addition, an operating system such as iOS, Android, Windows, and the like is run on the above-mentioned components. Application programs can be installed and run on the operating system. Those skilled in the art can clearly understand that, for the convenience and brevity of description, the explanations and beneficial effects of the above-mentioned related contents in any of the communication devices can refer to the corresponding method embodiments provided above, and will not be described here.

[0215] Referring to FIG. 13, the present application also provides a schematic diagram of a computer program product. In some embodiments, the above-mentioned methods disclosed in FIG. 4 or FIG. 6 can be implemented as computer program instructions encoded in a machine-readable storage medium in a machine-readable format or encoded in other non-transitory media or articles.

[0216] FIG. 13 schematically illustrates a conceptual, partially diagrammatic plan view of an example computer program product arranged in accordance with at least some embodiments presented herein, the example computer program product including a computer program for executing a computer process on a computing device.

[0217] In one embodiment, the computer program product 1300 is provided using a signal bearing medium 1301. The signal bearing medium 1301 can include one or more program instructions 1302, which when executed by one or more processors can provide the functionality or some portion of the functionality described above with respect to FIG. 4. Thus, for example, one or more features of steps S601-S602 can be undertaken by one or more instructions associated with the signal bearing medium 1301 with reference to the embodiment illustrated in FIG. 6; one or more features of steps S201-S202 can be undertaken by one or more instructions associated with the signal bearing medium 1301 with reference to the embodiment illustrated in FIG. 5. Further, the program instructions 1302 in FIG. 13 also describe example instructions.

[0218] In some examples, the signal bearing medium 1301 can comprise a computer- readable medium 1303, such as, but not limited to, a hard disk drive, a compact disc (CD), a digital video disc (DVD), a memory, a ROM, a RAM, or the like.

[0219] In some embodiments, the signal bearing medium 1301 can comprise a computer- recordable medium 1304, such as, but not limited to, a memory, a read / write (R / W) CD, a R / W DVD, and the like. In some embodiments, the signal bearing medium 1301 can comprise a communications medium 1305, such as, but not limited to, a digital and / or an analog communication medium (e.g., a fiber optic cable, a waveguide, a wired communication link, a wireless communication link, and the like). Thus, for example, the signal bearing medium 1301 can be conveyed by a wireless form of the communications medium 1305 (e.g., a wireless communication medium complying with the IEEE 802.15 standard or other transmission protocol).

[0220] The one or more program instructions 1302 can be, for example, computer- executable instructions or logic-implementing instructions. In some examples, a computing device of a computing device can be configured to provide various operations, functions, or actions in response to the program instructions 1302 being conveyed to the computing device by one or more of the computer-readable medium 1303, the computer-recordable medium 1304, and / or the communications medium 1305.

[0221] It is to be understood that the arrangements described herein are merely for purposes of example. As such, those skilled in the art will appreciate that other arrangements and other elements (e.g. machines, interfaces, functions, orders, and groupings of functions, etc.) can be used instead, and some elements can be omitted altogether according to the desired results. Additionally, many of the described elements can be implemented as functional entities that can be realized as discrete or distributed components, or as components integrated with other components, in any suitable combination and location.

[0222] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the system, device and module described above can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

[0223] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the device embodiments described above are merely illustrative, for example, the division of the modules is only a logical function division, and actual implementation can have another division manner, for example, a plurality of modules or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the displayed or discussed each other can be indirect coupling or communication connection through some interfaces, devices or modules, which can be electrical, mechanical or other forms.

[0224] The modules described as separate components can or can not be physically separated, and the components displayed as modules can or can not be physical modules, that is, they can be located in one place, or can be distributed on multiple network modules. Part or all of the modules can be selected according to actual needs to achieve the purpose of the embodiment scheme.

[0225] In addition, each functional module in each embodiment of the present application can be integrated in one processing module, or each module can exist physically, or two or more modules can be integrated in one module. The integrated module can be realized in the form of hardware or in the form of software functional module.

[0226] The integrated module, if implemented in the form of a software function module and sold or used as an independent product, can be stored in a computer readable storage medium. Based on such an understanding, the part of the technical solutions of the present application that essentially makes a contribution or the whole or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the processes of the methods described in the various embodiments of the present application. The aforementioned storage medium includes various media that can store program codes, such as a U disk, a mobile hard disk, a read-only memory, a random access memory, a magnetic disk or an optical disk.

[0227] The above-described embodiments are merely used to illustrate the technical solutions of the present application, rather than limit them; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features thereof can be replaced by equivalents; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A method of acquiring system information, characterized by, The method is applied to a terminal device supporting on-demand first system information (OD-SIB1), and the method comprises: satisfying a condition of camping on a target cell and a system information request triggering condition, and sending a system information request, the system information request being used to acquire first system information, the first system information comprising a first system information block, the target cell supporting on-demand first system information (OD-SIB1).

2. The method of claim 1, wherein, The system information request triggering condition comprises at least one of the following conditions: there is a requirement for acquiring part or all of second system information, the second system information comprising other system information in addition to the first system information and a master information block (MIB); no system information change indication is received within a change period corresponding to the first system information; the change period corresponding to the first system information is different from a change period corresponding to the second system information requested to be acquired; the request to acquire the second system information fails; there is uplink data to be transmitted and / or downlink data to be received; and the first system information is not in a sending state before the request to acquire the second system information.

3. The method of claim 2, wherein, The system information request comprises: a first information request, or a second information request; wherein the first information request is used to request to acquire the first system information, and the second information request is used to request to acquire the first system information and the second system information.

4. The method of claim 2, wherein, The no system information change indication being received within the change period corresponding to the first system information comprises: an interval between a time of acquiring the first system information and an end time of the change period corresponding to the first system information is less than a preset threshold.

5. The method of claim 4, wherein, The preset threshold is set according to a number of paging occasions (POs) within a change period.

6. The method according to claim 4 or 5, characterized in that, The first system information comprises the preset threshold.

7. The method of claim 2, wherein, The change period corresponding to the first system information is different from the change period corresponding to the second system information requested to be acquired, comprising: the first system information is acquired within a first change period, and the second system information is requested to be acquired within a second change period; or the first system information and the second system information are requested to be acquired within a second change period, the second change period being different from the first change period and being after the first change period.

8. The method of claim 2, wherein, The request to acquire the second system information fails, comprising: after sending the second information request, a response to the second information request is not received within a preset time, or after sending the second information request, the second system information is not acquired.

9. The method of claim 8, wherein, The second system information is not acquired, comprising: no information is received at a time-frequency resource position indicated by the first system information, or other information in addition to the requested second system information is received at the time-frequency resource position indicated by the first system information.

10. The method of claim 3, wherein, The second information request comprises: an initiated random access request or a request based on radio resource control (RRC) signaling.

11. The method according to any one of claims 1-10, characterized in that, The terminal device meets a condition for camping on a target cell, including: the terminal device obtaining a master information block and / or a first system information block of the target cell; wherein the master information block and / or the first system information block of the target cell indicates that the terminal device can camp on the target cell.

12. A method of acquiring system information, characterized by, The method is applied to a terminal device supporting on-demand first system information OD-SIB1, and the method includes: sending a first information request, the first information request being used for acquiring a first system information block; receiving a changed first system information block sent by a target cell under a system information sending trigger condition, the target cell supporting on-demand first system information OD-SIB1.

13. The method of claim 12, wherein, The system information sending trigger condition includes: receiving the first information request sent by the terminal device, or an interval between a time when the terminal device sends the first information request and an end time of a change period corresponding to the first information request being less than a preset threshold.

14. A method of acquiring system information, characterized by, The method is applied to a network device belonging to a network energy saving cell, the network energy saving cell supporting on-demand first system information OD-SIB1, and the method includes: receiving a first information request sent by a terminal device, the first information request being used for acquiring a first system information block; sending a changed first system information block under a system information sending trigger condition, the terminal device supporting on-demand first system information OD-SIB1.

15. The method of claim 14, wherein, The system information sending trigger condition includes: receiving the first information request sent by the terminal device, or an interval between a time when the terminal device sends the first information request and an end time of a change period corresponding to the first information request being less than a preset threshold.

16. A terminal device, comprising: The terminal device supports on-demand first system information OD-SIB1, and the terminal device includes: An information request module, configured to send a system information request under a condition for camping on a target cell and a system information request trigger condition, the system information request being used for acquiring first system information, the first system information including a first system information block, and the target cell supporting on-demand first system information OD-SIB1.

17. The apparatus of claim 16, wherein, The system information request trigger condition includes at least one of the following conditions: there is a demand for acquiring part or all of second system information, the second system information including other system information except the first system information and a master information block MIB; a system information change indication is not received within a change period corresponding to the first system information; the change period corresponding to the first system information and a change period corresponding to the second system information requested to be acquired are different change periods; the second system information requested to be acquired fails to be acquired; there is uplink data to be transmitted and / or downlink data to be received; before the second system information requested to be acquired, the first system information is not in a sending state.

18. A terminal device, comprising: The terminal device supports on-demand first system information OD-SIB1, and the terminal device includes: An information request module, configured to send a first information request, the first information request being used for acquiring a first system information block; The information receiving module is configured to receive a changed first system information block transmitted by a target cell under a system information transmission trigger condition, and the target cell supports on-demand first system information (OD-SIB1).

19. The apparatus of claim 18, wherein, The system information transmission trigger condition comprises: receiving the first information request sent by the terminal device, or an interval between a time when the terminal device sends the first information request and an end time of a change period corresponding to the first information request is less than a preset threshold.

20. A network device, comprising: The network device belongs to a network energy saving cell, the network energy saving cell supports OD-SIB1, and the network device comprises: The request receiving module is configured to receive a first information request sent by a terminal device, and the first information request is used to acquire a first system information block. The information sending module is configured to transmit a changed first system information block under a system information transmission trigger condition, and the terminal device supports OD-SIB1.

21. The apparatus of claim 20, wherein, The system information transmission trigger condition comprises: receiving the first information request sent by the terminal device, or an interval between a time when the terminal device sends the first information request and an end time of a change period corresponding to the first information request is less than a preset threshold.

22. A communications device, characterized by The communication device comprises: A memory configured to store computer programs or computer instructions; A processor configured to execute the computer programs or computer instructions stored in the memory, so that the communication device executes the method in any one of claims 1-11, or 12-13, or 14-15.

23. A computer storage medium configured to store a computer program, the computer program being executed to implement the method in any one of claims 1-11, or 12-13, or 14-15.

24. A computer program product comprising instructions which, when executed on a computer, cause the computer to carry out the method of any one of claims 1-11, or 12-13, or 14-15.

Images