System information block (SIB) request method, communication device, and storage medium

Abstract

Embodiments of the present disclosure provide a system information block (SIB) request method, a communication device, and a storage medium. The SIB request method comprises: on the basis of whether a first cell periodically sends an SIB, determining a mode for acquiring the SIB of the first cell.

Description

System Information Block (SIB) request method, communication device, and storage medium Technical Field

[0001] The present disclosure relates to the field of communication technologies, and in particular to a method for requesting a system information block (SIB), a communication device, and a storage medium. Background Art

[0002] To reduce energy consumption in base stations and the network, Network Energy Saving (NES) technology was proposed. NES technology limits the transmission and reception of network devices in the time domain and increases the sleep time of network devices, thereby achieving energy conservation.

[0003] Summary of the Invention

[0004] Embodiments of the present disclosure provide a SIB request method, a communication device, and a storage medium.

[0005] According to a first aspect of an embodiment of the present disclosure, a method for requesting an information system block (SIB) is provided, which is executed by a terminal. The method includes: determining a method for obtaining the SIB of the first cell according to whether the first cell periodically sends the SIB.

[0006] According to a second aspect of the embodiment of the present disclosure, a SIB request method is provided, wherein

[0007] The method is performed by a first network device in a first cell, and includes:

[0008] receiving a first request sent by a terminal, wherein the first request is used by the terminal to request a system information block SIB of the first cell;

[0009] According to the first request, the SIB requested by the terminal is sent.

[0010] According to a third aspect of an embodiment of the present disclosure, a method for requesting system information SIB is provided, where the method is performed by a second network device of a second cell, and the method includes:

[0011] A second request is received when the terminal has a cell reselection requirement; the second request is used by the terminal to request the first cell to send a system information block SIB.

[0012] According to a fourth aspect of an embodiment of the present disclosure, a method for requesting system information SIB is provided, where the method is performed by a second network device of a second cell, and the method includes:

[0013] Sending a cell configuration of a first cell to a terminal; the cell configuration is at least used by the terminal to determine whether the first cell periodically sends an SIB.

[0014] According to a fifth aspect of an embodiment of the present disclosure, a terminal is provided, comprising:

[0015] The processing module is configured to determine a method for obtaining the SIB of the first cell according to whether the first cell periodically sends the SIB.

[0016] According to a sixth aspect of an embodiment of the present disclosure, there is provided a first network device performing a method including:

[0017] A receiving module configured to receive a first request sent by a terminal, wherein the first request is used by the terminal to request a system information block SIB of the first cell;

[0018] The sending module is configured to send the SIB requested by the terminal according to the first request.

[0019] According to a seventh aspect of an embodiment of the present disclosure, a second network device is provided, comprising:

[0020] The receiving module is configured to receive a second request sent by the terminal when there is a cell reselection requirement; the second request is used by the terminal to request the first cell to send a system information block SIB.

[0021] According to an eighth aspect of an embodiment of the present disclosure, a second network device is provided, comprising:

[0022] The sending module is configured to send a cell configuration of a first cell to the terminal; the cell configuration is at least used by the terminal to determine whether the first cell periodically sends an SIB.

[0023] According to a ninth aspect of an embodiment of the present disclosure, a terminal is provided, comprising:

[0024] The processing module is configured to determine a method for obtaining the SIB of the first cell according to whether the first cell periodically sends the SIB.

[0025] According to a tenth aspect of an embodiment of the present disclosure, there is provided a first network device, wherein the method includes:

[0026] A receiving module configured to receive a first request sent by a terminal, wherein the first request is used by the terminal to request a system information block SIB of the first cell;

[0027] The sending module is configured to send the SIB requested by the terminal according to the first request.

[0028] According to an eleventh aspect of an embodiment of the present disclosure, a second network device is provided, comprising:

[0029] The receiving module is configured to receive a second request sent by the terminal when there is a cell reselection requirement; the second request is used by the terminal to request the first cell to send a system information block SIB.

[0030] According to a twelfth aspect of an embodiment of the present disclosure, a second network device is provided, comprising:

[0031] The sending module is configured to send a cell configuration of a first cell to the terminal; the cell configuration is at least used by the terminal to determine whether the first cell periodically sends an SIB.

[0032] According to the thirteenth aspect of an embodiment of the present disclosure, a communication device is provided, wherein the communication device includes: one or more processors; wherein the processor is used to call instructions so that the communication device executes the information system block SIB request method provided by any technical solution of the aforementioned first to fourth aspects.

[0033] According to the fourteenth aspect of an embodiment of the present disclosure, a storage medium is provided, wherein the storage medium stores instructions, which, when the instructions are executed on a communication device, enable the communication device to execute the information system block SIB request method provided in any of the first to fourth aspects.

[0034] The technical solution provided by the embodiments of the present disclosure determines the method for obtaining the SIB of the first cell based on whether the first cell periodically transmits the SIB. This reduces the delay for the terminal to obtain the SIB of the first cell compared to waiting for receiving the SIB from the first cell in an erroneous manner. It should be understood that the above general description and the detailed description below are merely exemplary and explanatory and do not limit the embodiments of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the embodiments of the present disclosure.

[0036] FIG1A is a schematic diagram showing an architecture of a communication system according to an exemplary embodiment;

[0037] FIG1B is a schematic diagram showing a MIB and a SIB according to an exemplary embodiment;

[0038] FIG1C is a diagram illustrating a resource location relationship between a synchronization signal broadcast block (Synchronization Signal and (Physical Broadcast Channel, PBCH) block, SSB) and a control resource set (CORESET) according to an exemplary embodiment;

[0039] FIG1D is a schematic diagram showing interaction of system information (SI) according to an exemplary embodiment;

[0040] FIG2A is a schematic flow chart showing a method for requesting an SIB according to an exemplary embodiment;

[0041] FIG2B is a schematic diagram showing a flow chart of a SIB request method according to an exemplary embodiment;

[0042] FIG2C is a schematic diagram showing a flow chart of a SIB request method according to an exemplary embodiment;

[0043] FIG3A is a schematic diagram showing a flow chart of a SIB request method according to an exemplary embodiment;

[0044] FIG3B is a schematic diagram showing a flow chart of a SIB request method according to an exemplary embodiment;

[0045] FIG4 is a schematic flow chart showing a method for requesting an SIB according to an exemplary embodiment;

[0046] FIG5 is a schematic diagram showing a flow chart of a SIB request method according to an exemplary embodiment;

[0047] FIG6A is a schematic diagram showing a flow chart of a SIB request method according to an exemplary embodiment;

[0048] FIG6B is a schematic diagram showing a flow chart of a SIB request method according to an exemplary embodiment;

[0049] FIG6C is a schematic diagram showing a flow chart of a SIB request method according to an exemplary embodiment;

[0050] FIG6D is a schematic structural diagram of a MAC CE according to an exemplary embodiment;

[0051] FIG7A is a schematic structural diagram of a terminal according to an exemplary embodiment;

[0052] FIG7B is a schematic structural diagram of a first network device according to an exemplary embodiment;

[0053] FIG7C is a schematic structural diagram of a second network device according to an exemplary embodiment;

[0054] FIG7D is a schematic structural diagram of a second network device according to an exemplary embodiment;

[0055] FIG8A is a schematic structural diagram of a communication device according to an exemplary embodiment;

[0056] FIG8B is a schematic structural diagram of a chip according to an exemplary embodiment. DETAILED DESCRIPTION

[0057] Embodiments of the present disclosure provide a method for requesting an information system block (SIB), a communication device, a communication system, and a storage medium.

[0058] A first aspect provides a method for requesting an information system block (SIB), which is executed by a terminal. The method includes: determining a method for obtaining the SIB of the first cell according to whether the first cell periodically sends the SIB.

[0059] Based on the above solution, the terminal will determine the method of obtaining the SIB of the first cell according to whether the first cell periodically sends the SIB. Compared with waiting to receive the SIB from the first cell in an incorrect way, the delay of the terminal obtaining the SIB of the first cell can be reduced.

[0060] In some embodiments of the first aspect, determining, based on whether the first cell periodically sends the SIB, a method for obtaining the SIB of the first cell includes: if a first condition is met, determining, based on whether the first cell periodically sends the SIB, a method for obtaining the SIB of the first cell;

[0061] The first condition includes at least one of the following:

[0062] The terminal has a cell reselection requirement;

[0063] The terminal recovers from the coverage breach;

[0064] The terminal receives a system broadcast change indication of the first cell;

[0065] The terminal has positioning requirements;

[0066] Downlink control information (DCI) of the first cell indicates system information;

[0067] The validity period of the SIB of the first cell stored in the terminal expires.

[0068] The above solution provides scenarios in which the terminal determines how to obtain the SBI of the first cell based on whether the terminal periodically sends the SIB.

[0069] In some embodiments of the first aspect, the method for obtaining the SIB of the first cell is determined according to whether the first cell periodically sends the SIB, including at least one of the following: the terminal has a need for cell reselection and the first cell sends the SIB non-periodically; the terminal has a need for cell reselection and the first cell sends the SIB non-periodically, and it is determined to send a first request to the first cell; the first request is used to request the SIB of the first cell; the terminal has a need for cell reselection and the first cell sends the SIB non-periodically; the terminal has a need for cell reselection and the first cell sends the SIB non-periodically, and it is determined to send a second request to the second cell; the second request is used to request the SIB of the first cell.

[0070] In some embodiments of the first aspect, the terminal has a cell reselection requirement and the first cell aperiodically sends an SIB. The terminal has a cell reselection requirement and the first cell aperiodically sends an SIB, and sends a first request to the first cell requesting the SIB of the first cell, including at least one of the following:

[0071] The terminal has a demand for cell reselection and the first cell aperiodically sends an SIB. The terminal has a demand for cell reselection and the first cell aperiodically sends an SIB, and determines to send a first request to the first cell before reselecting to the first cell;

[0072] The terminal has a need for cell reselection and the first cell aperiodically sends an SIB. The terminal determines to send a first request to the first cell after reselecting the first cell.

[0073] In some embodiments of the first aspect, the terminal has a cell reselection requirement and the first cell aperiodically sends an SIB. The terminal has a cell reselection requirement and the first cell aperiodically sends an SIB, and determining to send a first request to the first cell requesting the SIB of the first cell includes:

[0074] The terminal has a cell reselection requirement and the first cell aperiodically sends an SIB. The terminal determines to send a random access request to the first cell; the random access request includes: a first random access preamble code indicating the requested SIB.

[0075] In some embodiments of the first aspect,

[0076] The method also includes:

[0077] receiving a random access response sent by a first network device in a first cell;

[0078] Determine whether the first network device has received the first request according to the random access response.

[0079] In some embodiments of the first aspect,

[0080] The method also includes:

[0081] After sending the first request, monitoring the requested SIB on the first cell according to the configuration for periodically sending the SIB;

[0082] Whether the first network device receives the first request is determined based on whether the requested SIB is monitored.

[0083] In some embodiments of the first aspect,

[0084] The method also includes:

[0085] In response to determining that the first network device has not received the first request, it is determined to increase the transmit power of the random access request and continue to send the random access request.

[0086] In some embodiments of the first aspect,

[0087] The method also includes:

[0088] When the transmit power of the random access request reaches the maximum transmit power and / or the number of transmissions of the first random access preamble reaches the maximum number of transmissions, it is determined to stop sending the random access request.

[0089] In some embodiments of the first aspect,

[0090] The first request and / or the second request includes at least one of the following:

[0091] a cell identifier of the first cell;

[0092] Identification information of the requested SIB.

[0093] In some embodiments of the first aspect,

[0094] The method further comprises at least one of the following:

[0095] determining, according to a master information block (MIB) of the first cell, whether the first cell periodically sends an SIB;

[0096] Determine whether the first cell periodically sends the SIB according to the cell configuration of the first cell sent by the second cell.

[0097] In some embodiments of the first aspect, determining, according to a master information block (MIB) of the first cell, whether the first cell periodically sends an SIB includes at least one of the following:

[0098] determining, according to whether the MIB of the first cell includes the first bit, whether the first cell periodically sends the SIB;

[0099] determining, according to a verification method used by the MIB of the first cell, whether the first cell periodically sends the SIB;

[0100] Whether the first cell periodically sends the SIB is determined according to the indication content of the second bit in the MIB of the first cell.

[0101] In some embodiments of the first aspect,

[0102] Determining, according to a verification method used by the MIB of the first cell, whether the first cell periodically sends the SIB includes at least one of the following:

[0103] determining, according to a verification algorithm used by the MIB of the first cell, whether the first cell periodically sends the SIB;

[0104] Determine whether the first cell periodically sends the SIB according to the check mask used by the MIB of the first cell.

[0105] In some embodiments of the first aspect,

[0106] The cell configuration includes at least one of the following:

[0107] First information, indicating whether the first cell periodically sends the SIB;

[0108] Second information, indicating whether the first cell sends the SIB based on an on-demand mechanism;

[0109] The third information is used by the terminal to send a first request to the first cell, and / or the third information is used by the terminal to send a second request to the second cell; the first request and / or the second request are used by the terminal to request SIB from the first cell.

[0110] A second aspect provides a method for requesting system information SIB, where the method is performed by a first network device of a first cell, and includes:

[0111] receiving a first request sent by a terminal; the first request is used by the terminal to request a system information block SIB of a first cell;

[0112] According to the first request, the SIB requested by the terminal is sent.

[0113] In some embodiments of the second aspect, the first request includes: a random access request; the random access request includes: a first random access preamble code indicating a requested SIB.

[0114] In some embodiments of the second aspect, the method further includes: sending a request response to the terminal; the request response is used by the terminal to determine whether the first network device has received the first request.

[0115] In some embodiments of the second aspect, the request response includes: a random access response; the random access response is used to indicate to the terminal that the first network device has determined that the random access request requesting the SIB has been received.

[0116] In some embodiments of the second aspect, the first request is a request sent by the terminal before the terminal reselects to the first cell; or, the first request is a request sent by the terminal after the terminal reselects to the first cell.

[0117] In some embodiments of the second aspect, the method also includes: determining a verification method of the MIB based on whether the first cell periodically sends the SIB; determining whether the MIB includes a first bit based on whether the first cell periodically sends the SIB; and determining the indication content of the second bit included in the MIB based on whether the first cell periodically sends the SIB.

[0118] In some embodiments of the second aspect, the verification method of the MIB is determined according to whether the first cell periodically sends the SIB, including at least one of the following: determining the verification algorithm of the MIB according to whether the first cell periodically sends the SIB; determining the verification mask of the MIB according to whether the first cell periodically sends the SIB.

[0119] A third aspect provides a method for requesting system information SIB, where the method is performed by a second network device of a second cell, and includes:

[0120] A second request is received when the terminal has a cell reselection requirement; the second request is used by the terminal to request the first cell to send a system information block SIB.

[0121] In some embodiments of the third aspect, the method further includes: sending the second request to the first network device of the first cell.

[0122] A fourth aspect provides a method for requesting system information SIB, where the method is performed by a second network device of a second cell, and the method includes:

[0123] The cell configuration of the first cell is sent to the terminal; the cell configuration is at least used by the terminal to determine whether the first cell periodically sends the SIB.

[0124] In some embodiments of the fourth aspect, the cell configuration includes at least one of the following: first information indicating whether the first cell periodically sends SIB; second information indicating whether the first cell sends SIB based on an on-demand mechanism; third information, the third information is used for the terminal to send a first request to the first cell, and / or, the third information is used for the terminal to send a second request to the second cell; the first request and / or the second request are used for the terminal to request SIB from the first cell.

[0125] A fifth aspect provides a terminal, which includes: a processing module configured to determine a method for obtaining the SIB of the first cell according to whether the first cell periodically sends the SIB.

[0126] A sixth aspect provides a method performed by a first network device, comprising: a receiving module configured to receive a first request sent by a terminal; the first request is used by the terminal to request a system information block SIB of a first cell;

[0127] The sending module is configured to send the SIB requested by the terminal according to the first request.

[0128] The seventh aspect provides a second network device, which includes: a receiving module configured to receive a second request sent by the terminal when there is a cell reselection requirement; the second request is used by the terminal to request the first cell to send a system information block SIB.

[0129] The eighth aspect provides a second network device, which includes: a sending module configured to send the cell configuration of the first cell to the terminal; the cell configuration is at least used by the terminal to determine whether the first cell periodically sends SIB.

[0130] In a ninth aspect, an embodiment of the present disclosure provides a communication device, the communication device including: one or more processors;

[0131] The processor is used to call instructions to enable the communication device to execute the information system block SIB request method described in the optional implementation of the first to fourth aspects.

[0132] In the tenth aspect, an embodiment of the present disclosure provides a storage medium, wherein the storage medium stores instructions, which, when the instructions are executed on a communication device, enable the communication device to execute the information system block SIB request method described in the optional implementation methods of the first to fourth aspects.

[0133] In an eleventh aspect, an embodiment of the present disclosure provides a program product. When the program product is executed by a communication device, the communication device executes the information system block SIB request method described in the optional implementation of the first to fifth aspects.

[0134] In a twelfth aspect, an embodiment of the present disclosure provides a computer program, which, when executed on a computer, enables the computer to execute the information system block SIB request method described in the optional implementation manners of the first to fourth aspects.

[0135] It is understandable that the above-mentioned terminals, network devices, communication systems, program products, and computer programs are all used to execute the methods provided by the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects of the corresponding methods and will not be repeated here.

[0136] The embodiments of the present disclosure propose a request method, communication equipment, communication system and storage medium for an information system block SIB. The embodiments of the present disclosure are not exhaustive, but are only illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all of the steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0137] In each embodiment of the present disclosure, unless otherwise specified or provided for by logic, the terms and / or descriptions between the embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form a new embodiment based on their inherent logical relationships.

[0138] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0139] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular, such as "a", "an", "the", "the", "the", etc., can mean "one and only one", or "one or more", "at least one", etc. For example, when using articles such as "a", "an", "the" in English in translation, the noun following the article can be understood as a singular expression or a plural expression.

[0140] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0141] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0142] In some embodiments, descriptions such as "at least one of A and B," "A and / or B," "in one case A, in another case B," or "in one case A, in another case B" may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); and in some embodiments, A and B (both A and B are executed). The same applies when there are more branches such as A, B, and C.

[0143] In some embodiments, "A or B" and other descriptions may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The above is also applicable when there are more branches such as A, B, C, etc.

[0144] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restriction on the position, order, priority, quantity or content of the description objects. For the statement of the description object, please refer to the description in the context of the claims or embodiments, and no unnecessary restriction should be constituted due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", then the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different. For another example, if the description object is "information", then the "first category of information" and the "second category of information" can be the same information or different information, and their contents can be the same or different.

[0145] In some embodiments, “including A,” “comprising A,” “used to indicate A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0146] In some embodiments, terms such as "...", "determine...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

[0147] In some embodiments, terms such as "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not less than", and "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

[0148] In some embodiments, devices, etc. can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. Terms such as "device", "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", and "subject" can be used interchangeably.

[0149] In some embodiments, "network" can be interpreted as devices included in the network (eg, access network equipment, core network equipment, etc.).

[0150] In some embodiments, the terms "access network device (AN device)", "radio access network device (RAN device)", "base station (BS)", "radio base station" "fixed station", "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission / reception point (TRP)", "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "serving cell", "carrier", "component carrier", "bandwidth part (BWP)" and the like may be used interchangeably.

[0151] In some embodiments, the terms "terminal", "terminal device", "user equipment (UE)", "user terminal", "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc. can be used interchangeably.

[0152] In some embodiments, the access network device, the core network device, or the network device can be replaced by a terminal. For example, the various embodiments of the present disclosure can also be applied to a structure in which the communication between the access network device, the core network device, or the network device and the terminal is replaced by communication between multiple terminals (for example, device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, it is also possible to set the structure in which the terminal has all or part of the functions of the access network device. In addition, terms such as "uplink" and "downlink" can also be replaced by terms corresponding to communication between terminals (for example, "side"). For example, uplink channels, downlink channels, etc. can be replaced by side channels, and uplinks, downlinks, etc. can be replaced by side links.

[0153] In some embodiments, the terminal may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, the core network device, or the network device may have a structure that has all or part of the functions of the terminal.

[0154] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0155] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0156] In addition, each element, each row, or each column in the table of the embodiment of the present disclosure can be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns can also be implemented as an independent embodiment.

[0157] FIG1A is a schematic diagram showing the architecture of a communication system according to an embodiment of the present disclosure.

[0158] As shown in Figure 1A, a communication system 100 includes a terminal 101 and a network device 102. The network device 102 may include an access network device and / or a core network device.

[0159] In some embodiments, the terminal 101 includes, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, and at least one of a wireless terminal device in a smart home, but is not limited thereto.

[0160] In some embodiments, the terminal is also referred to as User Equipment (UE).

[0161] In some embodiments, the access network device may be, for example, a node or device that accesses a terminal to a wireless network. The access network device may include an evolved NodeB (eNB), a next generation evolved NodeB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved nodeB (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, and at least one of an access node in a Wi-Fi system, but is not limited thereto.

[0162] In some embodiments, the technical solution of the present disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within the access network devices involved in the embodiments of the present disclosure can be transformed into internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces can be implemented through software or programs.

[0163] In some embodiments, the access network device can be composed of a centralized unit (CU) and a distributed unit (DU), where the CU can also be called a control unit. The CU-DU structure can be used to split the protocol layer of the access network device, with the functions of some protocol layers centrally controlled by the CU, and the functions of the remaining part or all of the protocol layers distributed in the DU, which is centrally controlled by the CU, but is not limited to this.

[0164] In some embodiments, the core network device may be a single device including a first network element, or may be a plurality of devices or a group of devices, each including a first network element. The network element may be virtual or physical. The core network may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), and a Next Generation Core (NGC).

[0165] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution provided by the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution provided by the embodiment of the present disclosure is also applicable to similar technical problems.

[0166] The following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG1A , or a portion thereof, but are not limited thereto. The entities shown in FIG1A are illustrative only. The communication system may include all or part of the entities shown in FIG1A , or may include other entities other than those shown in FIG1A . The number and form of the entities may be arbitrary. The connection relationship between the entities is illustrative only. The entities may be connected or disconnected, and the connection may be in any manner, including direct or indirect, wired or wireless.

[0167] The embodiments of the present disclosure can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), future radio access (FRA), new radio access technology (RAT), new radio (NR), new radio access (NX), future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X) systems, systems using configuration methods for other resources, and next-generation systems based on and extending these systems. Furthermore, multiple systems may be combined (for example, LTE and NR).

[0168] The content broadcast by the cell in the NR system may include: MIB, SIB1 and other system information (OSI). The RMSI may include at least SIB1.

[0169] In some embodiments, the remaining minimum system information (RMSI) may include MIB and SIB1.

[0170] As shown in Figure 1B, the MIB may include configuration information for SIB1. For example, the MIB includes configuration information for scheduling resources. The scheduling resources may include Physical Downlink Control Channel (PDCCH) resources. The downlink control information (DCI) sent on the PUCCH resources is used to schedule SIB1. SIB1 can also be used to configure scheduling resources for OSI. In some embodiments, SIB1 may also include information required for accessing the corresponding cell and unified access control (UAC) parameters.

[0171] For example, SIB2 may include cell reselection information, which is mainly related to the serving cell.

[0172] For example, SIB3 may include reselection information related to the current serving frequency and the same-frequency neighboring cells.

[0173] For example, SIB4 may include reselection information related to other NR frequencies and inter-frequency neighboring cells.

[0174] For example, SIB5 may include Evolved-(Universal Mobile Telecommunications System, UMTS) Universal Terrestrial Radio Access (E-UTRA) frequency and E-UTRA neighbor cell related reselection information.

[0175] For example, SIB6 may include an Emergency Telecommunications Warning System (ETWS) primary notification.

[0176] For example, SIB7 may include ETWS secondary notification.

[0177] For example, SIB8 may include a Commercial Mobile Alert System (CMAS) warning notification.

[0178] For example, SIB9 may include information related to positioning system time and world time.

[0179] In some embodiments, SIB1 may include: cell selection configuration, cell access configuration, OSI scheduling configuration and / or cell common configuration, access control-related configuration parameters and / or cell capability-related configuration parameters.

[0180] In some embodiments, the RMSI control resource set (CORESET) is configured by the MIB. The RMSI CORESET has at least three resource location relationships with the SSB. The CORESET includes one or more PDCCH resources. The PDSCH can be used to transmit the SIB.

[0181] The terminal can obtain the resource location of the PDCCH based on the PBCH in the SSB, and further monitor the DCI based on the resource location of the PDCCH, and receive the RMSI according to the scheduling of the monitored DCI.

[0182] FIG1C shows diagrams of CORESET and SSB in different multiplexing modes of a communication system.

[0183] Figure 1 is used for a time division multiplexing (TDM) communication system. Figure 2 is used for a TDM and frequency division multiplexing (FDM) communication system. Figure 3 is used for an FDM communication system.

[0184] In some embodiments, for Network Energy Saving (NES), the system information sent by the network side is reduced.

[0185] In some embodiments, in addition to sending MIB and SIB1, the network device requests other SIBs on demand. That is, when the terminal needs other SIBs, the terminal sends a System Information (SI) request to the network device. After receiving the SI request, the network device determines whether to broadcast the corresponding SIB.

[0186] The SI request may include: an SI request based on message 1 (Message 1, Msg1) of the random access request and / or an SI request based on message 3 of the random access request.

[0187] In some embodiments, the SI request based on Msg1 may use reserved random access preamble and / or random access channel (RACH) resources.

[0188] In some embodiments, the SI request based on Msg3 does not require the reservation of RACH resources and random access preamble.

[0189] The SI request based on Msg3 can be defined as RRCSystemInfoRequest message (Msg3).

[0190] The terminal learns whether to use the SI request based on Msg1 or the SI request based on Msg3 by reading the system information.

[0191] If the base station provides the configuration information of the SI request (eg, si-Request-Config) in the system information (SIB1), the SI request based on Msg1 is used; otherwise, the SI request based on Msg3 is used.

[0192] After receiving the SI request, the base station may send an SI request confirmation to the terminal.

[0193] After receiving the SI request confirmation, the terminal receives SI in the current modification period. After receiving SI, the terminal knows that the modification period has ended or that SI has been received. If RACH fails during the SI request process, the subsequent behavior of the UE depends on the UE implementation.

[0194] FIG1D shows a method for information interaction between a network device and a terminal, which may include:

[0195] Network devices broadcast MIBs;

[0196] Network devices broadcast SIB1;

[0197] The terminal sends an SI request;

[0198] Network devices send system information.

[0199] Typically, to enable more terminals to access or reside in a cell in an energy-saving state, the cell needs to periodically send MIB and SIB1. Therefore, how to enable terminals to successfully access or reside in a cell in an energy-saving state when network equipment aperiodically sends SIBs such as SIB1 is a problem that needs further resolution.

[0200] In view of this, as shown in FIG2A , an embodiment of the present disclosure provides a SIB request method, which is executed by a communication system. The method may include:

[0201] S2101: The network device sends network information to the terminal.

[0202] In some embodiments, the network device may be an access network device.

[0203] In some embodiments, the network device that sends the network information may be a first network device and / or a second network device. The second network device is different from the first network device. Exemplarily, the first network device and the second network device may be two adjacent access network devices.

[0204] The first network device is a network device of a first cell. The second network device may be a network device of a second cell.

[0205] The first cell and the second cell may be adjacent cells. For example, the first cell and the second cell may be co-frequency adjacent cells, or the first cell and the second cell may be inter-frequency adjacent cells.

[0206] The first cell and the second cell may be cells with overlapping coverage.

[0207] For carrier aggregation and / or dual connectivity scenarios, the second cell may be the primary cell of the first cell and the first cell may be the secondary cell. Alternatively, the first cell may be a conventional secondary cell and the second cell may be the primary and secondary cells.

[0208] In some embodiments, the second cell may be the current cell of the terminal. Exemplarily, when the terminal is in an RRC connected state, the second cell may be the current serving cell of the terminal. Furthermore, exemplarily, when the terminal is in an RRC idle state and / or an RRC inactive state, the second cell may be the current camped cell of the terminal.

[0209] In some embodiments, the network device broadcasts, unicasts, or multicasts the network information.

[0210] In some embodiments, the network information may be the MIB of the first cell.

[0211] In some embodiments, the network information may be a cell configuration of the first cell.

[0212] In some embodiments, the network information may be used by the terminal to determine whether the first cell periodically sends the SIB.

[0213] In some embodiments, the network information may be used by the terminal to determine whether the first cell periodically transmits SIB1.

[0214] In some embodiments, periodically sending the SIB may include: sending the SIB according to a semi-statically configured period, and / or sending the SIB according to a period corresponding to a periodic configuration or a dynamic configuration.

[0215] In some embodiments, assuming that the first cell transmits the SIB aperiodically, the first cell may not transmit the SIB, transmit the SIB based on an on-demand mechanism, or transmit the SIB based on a request of the terminal.

[0216] The SIBs sent based on the on-demand mechanism may include but are not limited to at least one of the following:

[0217] The cell sends the SIB according to its own needs. For example, when the cell wants to establish downlink synchronization with the terminal or reestablish a downlink connection, it can be considered that a demand has been generated, and therefore the cell can actively broadcast the SIB.

[0218] The cell sends the SIB according to the needs of the terminal. For example, when the terminal needs to obtain the SIB, it can send a request to the network device. In this way, the network device will know that the terminal needs to obtain the SIB and then determine whether to broadcast the SIB.

[0219] In some embodiments, the terminal may request an SIB from a cell that aperiodically sends an SIB by sending a wake-up signal (WUS).

[0220] In some embodiments, the first network device of the first cell periodically broadcasts the MIB.

[0221] In some embodiments, the first network device of the first cell determines the MIB of the first cell according to whether the first cell periodically sends the SIB.

[0222] In some embodiments, the first network device of the first cell determines the MIB of the first cell according to whether the first cell periodically sends SIB1.

[0223] In some embodiments, the first network device of the first cell determines the MIB of the first cell according to whether the first cell periodically sends the SIB, including but not limited to at least one of the following:

[0224] Determining a verification method for the MIB according to whether the first cell periodically sends the SIB;

[0225] determining, according to whether the first cell periodically sends the SIB, whether the MIB includes the first bit;

[0226] The indication content of the second bit included in the MIB is determined according to whether the first cell periodically sends the SIB.

[0227] In some embodiments, the MIB of the first cell explicitly indicates whether the first cell periodically transmits the SIB. For example, the MIB of the first cell includes an indication bit indicating whether the first cell periodically transmits the SIB. For example, the MIB of the first cell explicitly indicates whether the first cell periodically transmits SIB1.

[0228] In some embodiments, the MIB of the first cell implicitly indicates whether the first cell periodically transmits the SIB. For example, when the first cell aperiodically transmits the SIB, the MIB may include PUCCH resources for scheduling information (e.g., DCI) of SIB1. For another example, when the first cell periodically transmits the SIB, the MIB does not include PUCCH resources for scheduling information (e.g., DCI) of SIB1. For another example, the MIB of the first cell implicitly indicates whether the first cell periodically transmits SIB1.

[0229] In some embodiments, whether the first cell periodically sends the SIB is determined based on a verification method of the MIB.

[0230] For example, if the first cell periodically sends the SIB, the MIB of the first cell uses the first verification method. If the first cell non-periodically sends the SIB, the MIB of the first cell uses the second verification method. At this time, if the terminal successfully verifies the MIB of the first cell using the first verification method, it is determined that the first cell periodically sends the SIB; otherwise, it is determined that the first cell non-periodically sends the SIB. Alternatively, if the terminal successfully verifies the MIB of the first cell using the second verification method, it is determined that the first cell non-periodically sends the SIB; otherwise, it is determined that the first cell periodically sends the SIB.

[0231] In some embodiments, whether the first cell periodically transmits the SIB is determined based on a check algorithm used by the MIB. For example, different check algorithms may correspond to different polynomials for generating a CRC.

[0232] In some embodiments, whether the first cell periodically sends the SIB is determined based on a check mask used by the MIB.

[0233] For example, taking CRC as an example, the check mask can be (CRC mask). For example, the MIB information bits and the bit sequence generated based on the polynomial are XORed to obtain a CRC of a specified length. The CRC of the specified length and the check mask are XORed and appended to the back end of the MIB, which is then sent uniformly by the network device to the terminal.

[0234] In some embodiments, whether the first cell periodically sends the SIB is determined based on whether the MIB includes the first bit.

[0235] For example, unused idle bits and / or reserved bits in the MIB may be used as the first bit. The number of the first bits may be one or more. Different values ​​of the first bit represent whether the first cell periodically sends the SIB.

[0236] Whether the first cell periodically sends the SIB is determined according to the indication content of the second bit included in the MIB.

[0237] In some embodiments, a new bit may be added to the MIB or an idle bit of the MIB may be occupied as the second bit. The number of the second bits may be one or more. The indication content of the second bit corresponds to the value of the second bit. Whether the first cell periodically transmits the SIB is determined based on the indication content of the second bit.

[0238] In some embodiments, based on whether the first cell periodically sends an SSB, the first cell determines a value of a spare bit in the MIB of the first cell;

[0239] According to whether the first cell periodically sends the SSB, the first cell determines a value of a synchronization signal broadcast block-subcarrier spacing offset ssb-SubcarrierOffest indication bit in the MIB of the first cell;

[0240] According to whether the first cell periodically sends the SSB, the first cell determines a value of a system frame number SFN indication bit in the MIB of the first cell;

[0241] According to whether the first cell periodically sends the SSB, the first cell determines a value of a demodulation reference signal DRMS-Type A position indication bit in the MIB of the first cell;

[0242] According to whether the first cell periodically sends the SSB, the first cell determines a value of a cell prohibition indication bit in the MIB of the first cell, and determines a type of the first cell;

[0243] According to whether the first cell periodically sends the SSB, the first cell determines a value of a subcarrier spacing subcarrierSpacingCommon indication bit in the MIB of the first cell;

[0244] Determine, according to whether the first cell periodically sends the SSB, a value of the intraFreqReselections indication bit in the MIB of the first cell;

[0245] Determine, according to whether the first cell periodically sends the SSB, a value of a downlink control channel SIB1 configuration (pdcch-ConfigSIB1) indication bit in the MIB of the first cell;

[0246] The value of the cell barred indication bit in the MIB of the first cell is determined according to whether the first cell periodically sends the SSB.

[0247] In some embodiments, the value of at least one indicator bit in the MIB of the first cell is within a first set, indicating that the first cell is a first-category cell. In some embodiments, the value of at least one indicator bit in the MIB of the first cell is within a second set, indicating that the first cell is a second-category cell.

[0248] In some embodiments, the value of the ssb-SubcarrierOffest indication bit in the MIB includes the last bit of the ssb-SubcarrierOffest indication bit in the MIB.

[0249] In some embodiments, the value of the ssb-SubcarrierOffest indication bit in the MIB of the first cell is within a first set, indicating that the first cell is a Class 1 cell. In some embodiments, the value of the ssb-SubcarrierOffest indication bit in the MIB of the first cell is within a second set, indicating that the first cell is a Class 2 cell.

[0250] In some embodiments, the value of the pdcch-ConfigSIB1 indicator bit in the MIB of the first cell is within a first set, indicating that the first cell is a cell of type 1. In some embodiments, the value of the pdcch-ConfigSIB1 indicator bit in the MIB of the first cell is within a second set, indicating that the first cell is a cell of type 2.

[0251] In some embodiments, the values ​​in the first set and the second set may be configured by the network device, or may be predefined by protocol agreement or the like.

[0252] Exemplarily, the values ​​of the first set are even numbers, and the values ​​of the second set are odd numbers. Exemplarily, the values ​​of the first set are odd numbers, and the values ​​of the second set are even numbers. Furthermore, exemplarily, the first set includes a value range that is different from the value range of the second set. For example, the values ​​of the first set may all be smaller than the values ​​of the second set, or the values ​​of the first set may all be larger than the values ​​of the second set.

[0253] In some embodiments, the second network device of the second cell sends the cell configuration of the first cell. Exemplarily, the cell configuration can be used by the terminal to determine whether the first cell periodically transmits SIBs. For example, the cell configuration can be used by the terminal to determine whether to periodically transmit SIB1.

[0254] In some embodiments, the cell configuration includes at least one of the following:

[0255] First information, indicating whether the first cell periodically sends the SIB;

[0256] Second information, indicating whether the first cell sends the SIB based on an on-demand mechanism;

[0257] The third information is used by the terminal to send a first request to the first cell, and / or the third information is used by the terminal to send a second request to the second cell; the first request and / or the second request are used by the terminal to request SIB from the first cell.

[0258] In some embodiments, when the cell configuration includes the first information, the cell configuration may omit the second information.

[0259] In some embodiments, when the cell configuration includes the second information, the cell configuration may omit the first information.

[0260] In some embodiments, when the cell configuration includes the third information, the first information and the second information may be omitted from the cell configuration. For example, the cell configuration is equivalent to configuring the SIB of the first cell requested by the terminal through the first request.

[0261] In some embodiments, the third information may include at least one of the following:

[0262] A sending mode of the first request, for example, the sending mode may include: one-time sending and / or repeated sending;

[0263] Receive the time domain location information of the time window.

[0264] In some embodiments, if the third information does not include the time domain location information of the receiving time window, the sending mode of the first request may be assumed to be one-time sending, and the indication information of the sending mode may be omitted.

[0265] S2102: The terminal determines whether the first cell periodically sends SIB.

[0266] In some embodiments, the terminal determines whether the first cell periodically sends the SIB based on the MIB and / or cell configuration of the first cell.

[0267] In some embodiments, the terminal determines whether the first cell periodically sends the SIB in the current time period based on the MIB and / or cell configuration of the first cell.

[0268] S2103: The terminal determines a method for obtaining the SIB of the first cell.

[0269] In some embodiments, the terminal determines a method for acquiring the SIB of the first cell according to whether the first cell periodically sends the SIB.

[0270] In some embodiments, the first cell periodically sends the SIB, and the SIB is received from the first cell at a corresponding time according to the period of the first cell sending the SIB.

[0271] In some embodiments, the first cell sends the SIB aperiodically, and a method for obtaining the SIB of the first cell is determined according to the cell type of the first cell.

[0272] In some embodiments, the first cell sends the SIB aperiodically, and if the first cell is a first type cell that sends the SIB on demand, it is determined to request the SIB from the first cell based on the request information.

[0273] In some embodiments, the first cell transmits the SIB aperiodically. If the first cell is a second type cell that does not transmit the SIB, it is determined to obtain the SIB of the first cell from a reference cell (or anchor cell) of the first cell.

[0274] In some embodiments, when the terminal has a need to reselect a cell, a method for acquiring the SIB of the first cell is determined according to whether the first cell periodically sends the SIB.

[0275] When the terminal recovers from the coverage hole, a method for acquiring the SIB of the first cell is determined according to whether the first cell periodically sends the SIB.

[0276] In some embodiments, the coverage hole herein may be an area without network coverage.

[0277] When the terminal receives the system broadcast change indication of the first cell, the method for obtaining the SIB of the first cell is determined according to whether the first cell periodically sends the SIB.

[0278] In some embodiments, if a terminal receives a system broadcast change indication for a first cell, it indicates that the first cell has updated its SIB. For example, if the first cell receives a system broadcast change indication, the system broadcast change indication may indicate whether SIB1 and / or SIBn have been updated, where n may be a positive integer greater than or equal to 2. If SIB1 has been updated, the terminal needs to obtain SIB1 for the first cell. If SIBn has been updated, the terminal needs to obtain SIB1 for the first cell and, based on SIB1, obtain the resource configuration of SIBn.

[0279] When the terminal has a positioning requirement, a method for acquiring the SIB of the first cell is determined according to whether the first cell periodically sends the SIB.

[0280] For example, when a terminal needs satellite positioning, it needs to obtain SIBs related to positioning. For example, if a terminal needs positioning, it needs to obtain SIB9 of the satellite positioning system timing. If the terminal needs to obtain SIB9, it needs to obtain SIB9 configuration information based on SIB1.

[0281] When the terminal receives downlink control information DCI indicating system information update from the first cell, the method for acquiring the SIB of the first cell is determined according to whether the first cell periodically sends the SIB.

[0282] In some embodiments, the terminal paging downlink control information DCI indicates a system information update, indicating that the SIB has been updated. Similarly, the terminal needs to stay in or access the first cell well, and needs to obtain the updated SIB. Therefore, it is necessary to determine a method for obtaining the SIB of the first cell.

[0283] When the validity period of the SIB of the first cell stored in the terminal expires, the method for obtaining the SIB of the first cell is determined according to whether the first cell periodically sends the SIB.

[0284] In some embodiments, the SIB of the first cell has a certain validity period. If the validity period expires, the terminal may not be able to determine whether the SIB is still valid and needs to re-acquire the SIB of the first cell. Therefore, it is necessary to determine a method for acquiring the SIB of the first cell.

[0285] S2104: The terminal sends a first request to the first cell.

[0286] In some embodiments, the terminal sends the first request to the first cell according to the determined manner of obtaining the SIB of the first cell by sending a first request to the first cell.

[0287] Exemplarily, the first cell is a cell that sends the SIB based on a terminal request, and the terminal sends the first request to the first cell.

[0288] Exemplarily, the first cell is a cell that sends SIB on demand, and the terminal sends the first request to the first cell.

[0289] Exemplarily, if the first cell sends the SIB based on a terminal request or sends the SIB on demand and the cell configuration obtains the SIB of the first cell based on the first request, the terminal sends the first request to the first cell.

[0290] In some embodiments, the terminal sends a first request to the first cell before accessing or camping on the first cell.

[0291] In some embodiments, the terminal sends the first request to the first cell during a random access procedure for accessing or camping on the first cell.

[0292] Exemplarily, the terminal has a need for cell reselection and the first cell aperiodically sends the SIB. The terminal determines to send a first request to the first cell requesting the SIB of the first cell.

[0293] For example, the terminal needs to reselect a cell and the first cell aperiodically sends an SIB. The terminal determines to send a first request to the first cell requesting the SIB of the first cell before reselecting to the first cell.

[0294] Before reselecting to the first cell, a first request is sent to the first cell, where the first request may be used to request an SIB.

[0295] For example, during cell reselection, the terminal sends a first request to the first cell.

[0296] In some embodiments, the first request may include identification information of the requested SIB. For example, the SIB requested by the terminal may be SIB1. In some embodiments, the first request may omit the SIB identification information. For example, the SIB requested by the terminal before reselecting to the first cell may default to a designated SIB. The designated SIB may include, but is not limited to, SIB1.

[0297] In some embodiments, the first request may further include: a cell identifier of the first cell.

[0298] In some embodiments, the cell identifier may include but is not limited to a physical cell identifier and / or a high-layer cell identifier.

[0299] It is worth noting that if the terminal sends the first request to the first cell, the cell identifier of the first cell is optional. For example, if the terminal sends the first request at the resource location where the first cell sends the first request, the first request may not carry the cell identifier of the first cell.

[0300] In some embodiments, the terminal may request the first cell for an SIB based on Msg1 of the four-step random access request.

[0301] In some embodiments, the terminal may request the first cell for SIB based on Msg3 of the four-step random access request.

[0302] In some embodiments, the terminal may request the first cell for SIB based on MsgA of the two-step random access request.

[0303] In some embodiments, the terminal needs to reselect a cell and the first cell aperiodically sends an SIB. The terminal determines to send a first request to the first cell requesting the SIB of the first cell after reselecting to the first cell.

[0304] As another example, the terminal has a need for cell reselection and the first cell aperiodically sends the SIB. The terminal determines to send a second request to the second cell requesting the SIB of the first cell.

[0305] In some embodiments, the network device may reserve a specific random access preamble code. When the terminal sends a random access message carrying the specific random access code, it can be considered that the terminal requests the SIB from the network device.

[0306] In some embodiments, there are multiple specific random access preambles. For example, different specific random access preambles correspond to different SIBs. In this way, the terminal selects the corresponding specific random access preamble to send a random access message based on the correspondence and the SIB it needs to request.

[0307] S2105: The first cell sends a request response.

[0308] In some embodiments, the request response may include: a random access response sent by the first cell.

[0309] In some embodiments, the first cell determines to allow the terminal to camp and / or determines to send an SIB requested by the terminal, and then sends a random access response to the terminal.

[0310] As shown in FIG6D , the random access response may include: one or more sub-headers.

[0311] In some embodiments, a sub-header may include a Random Access Preamble Identity (RAP ID).

[0312] In some embodiments, if the terminal receives a subheader including its own RAP ID, it may be considered that a random access response has been received.

[0313] In some other embodiments, if the terminal receives a subheader that only includes a RAP ID, it may be considered that a random access response has been received.

[0314] In some embodiments, these sub-headers may also carry a backoff indicator (BI) sub-header, etc.

[0315] In some embodiments, the random access response may further include: a MAC random access response (Random Access Response, RAR).

[0316] In some embodiments, the request response may include: the SIB requested by the terminal sent by the first cell.

[0317] In some embodiments, the request response may be an RRC message indicating the SIB requested by the sending terminal.

[0318] In some embodiments, the request response may be an RRC message indicating the SIB to be broadcast.

[0319] In some embodiments, the request response may indicate whether to send the SIB requested by the terminal. If the request response indicates that the first cell and / or the second cell will send the SIB requested by the terminal, the terminal monitors the SIB sent by the first cell and / or the second cell.

[0320] In some embodiments, the request response may also carry resource location information of the SIB requested by the first cell and / or the second cell, so that the terminal can monitor the SIB at the resource location indicated by the resource location information, for example, monitor SIB1.

[0321] S2106: The terminal determines whether the network device has monitored the first request.

[0322] In some embodiments, the terminal listens for a request response to the first request within a receiving time window after sending the first request. If a request response is heard within the time window, it is determined that the network device has heard the first request; otherwise, it is considered that the terminal has not heard the request response.

[0323] In some embodiments, the terminal determines whether the network has received the first request based on whether the terminal has received the SIB requested by the terminal from the network. For example, if the terminal monitors the first network device sending the SIB requested by the terminal, the terminal determines that the network has received the first request; otherwise, the terminal may determine that the network has not received the first request.

[0324] In some embodiments, the terminal determines whether the network has received the first request based on whether the random access response is received. For example, if the terminal monitors a random access response including its own RAP ID at a random access response reception opportunity, the terminal determines that the network has received the first request; otherwise, the terminal may determine that the network has not received the first request.

[0325] In some embodiments, the terminal determines whether the network has received the first request based on whether a request response to the first request is received. For example, if the terminal receives a request response sent by the first network device, it is determined that the network has received the first request; otherwise, it can be considered that the network has not received the first request.

[0326] S2107: The terminal resends the first request to the first cell.

[0327] In some embodiments, if it is determined that the network device has not heard the first request, the first request is resent.

[0328] In some embodiments, when it is determined that the network device has not heard the first request, the transmission power is increased and the first request is resent until the number of transmissions of the first request reaches a maximum number or the transmission power of the first request reaches a maximum transmission power.

[0329] In some embodiments, the terminal increases the power of the random access request and resends the random access request corresponding to the first request.

[0330] In some embodiments, the terminal increases the power of the random access request and retransmits the random access request corresponding to the first request until the transmit power of the random access request reaches the maximum transmit power or the number of transmissions of the first random access preamble reaches the maximum number of transmissions.

[0331] In some embodiments, if it is determined that the network device has intercepted the first request, regardless of whether the network side sends the SIB requested by the terminal, the sending of the first request to the first cell is suspended.

[0332] In some embodiments, if the terminal has urgent business transmission, it may choose to access or reside in other cells that periodically send SSBs and / or SIBs.

[0333] As shown in FIG2B , an embodiment of the present disclosure provides a SIB request method, which is executed by a communication system. The method may include:

[0334] S2201: The network device sends network information to the terminal.

[0335] In some embodiments, the network device may be an access network device.

[0336] In some embodiments, the network device that sends the network information may be a first network device and / or a second network device. The second network device is different from the first network device. Exemplarily, the first network device and the second network device may be two adjacent access network devices.

[0337] The first network device is a network device of a first cell. The second network device may be a network device of a second cell.

[0338] The first cell and the second cell may be adjacent cells. For example, the first cell and the second cell may be co-frequency adjacent cells, or the first cell and the second cell may be inter-frequency adjacent cells.

[0339] The first cell and the second cell may be cells with overlapping coverage.

[0340] For carrier aggregation and / or dual connectivity scenarios, the second cell may be the primary cell of the first cell and the first cell may be the secondary cell. Alternatively, the first cell may be a conventional secondary cell and the second cell may be the primary and secondary cells.

[0341] In some embodiments, the second cell may be the current cell of the terminal. Exemplarily, when the terminal is in an RRC connected state, the second cell may be the current serving cell of the terminal. Furthermore, exemplarily, when the terminal is in an RRC idle state and / or an RRC inactive state, the second cell may be the current camped cell of the terminal.

[0342] In some embodiments, the network device broadcasts, unicasts, or multicasts the network information.

[0343] In some embodiments, the network information may be the MIB of the first cell.

[0344] In some embodiments, the network information may be a cell configuration of the first cell.

[0345] In some embodiments, the network information may be used by the terminal to determine whether the first cell periodically sends the SIB.

[0346] In some embodiments, the network information may be used by the terminal to determine whether the first cell periodically transmits SIB1.

[0347] In some embodiments, periodically sending the SIB may include: sending the SIB according to a semi-statically configured period, and / or sending the SIB according to a period corresponding to a periodic configuration or a dynamic configuration.

[0348] In some embodiments, assuming that the first cell transmits the SIB aperiodically, the first cell may not transmit the SIB, transmit the SIB based on an on-demand mechanism, or transmit the SIB based on a request of the terminal.

[0349] The SIBs sent based on the on-demand mechanism may include but are not limited to at least one of the following:

[0350] The cell sends the SIB according to its own needs. For example, when the cell wants to establish downlink synchronization with the terminal or reestablish a downlink connection, it can be considered that a demand has been generated, and therefore the cell can actively broadcast the SIB.

[0351] The cell sends the SIB according to the needs of the terminal. For example, when the terminal needs to obtain the SIB, it can send a request to the network device. In this way, the network device will know that the terminal needs to obtain the SIB and then determine whether to broadcast the SIB.

[0352] In some embodiments, the terminal may request an SIB from a cell that aperiodically sends an SIB by sending a wake-up signal (WUS).

[0353] In some embodiments, the first network device of the first cell periodically broadcasts the MIB.

[0354] In some embodiments, the first network device of the first cell determines the MIB of the first cell according to whether the first cell periodically sends the SIB.

[0355] In some embodiments, the first network device of the first cell determines the MIB of the first cell according to whether the first cell periodically sends SIB1.

[0356] In some embodiments, the first network device of the first cell determines the MIB of the first cell according to whether the first cell periodically sends the SIB, including but not limited to at least one of the following:

[0357] Determining a verification method for the MIB according to whether the first cell periodically sends the SIB;

[0358] determining, according to whether the first cell periodically sends the SIB, whether the MIB includes the first bit;

[0359] The indication content of the second bit included in the MIB is determined according to whether the first cell periodically sends the SIB.

[0360] In some embodiments, the MIB of the first cell explicitly indicates whether the first cell periodically transmits the SIB. For example, the MIB of the first cell includes an indication bit indicating whether the first cell periodically transmits the SIB. For example, the MIB of the first cell explicitly indicates whether the first cell periodically transmits SIB1.

[0361] In some embodiments, the MIB of the first cell implicitly indicates whether the first cell periodically transmits the SIB. For example, when the first cell aperiodically transmits the SIB, the MIB may include PUCCH resources for scheduling information (e.g., DCI) of SIB1. For another example, when the first cell periodically transmits the SIB, the MIB does not include PUCCH resources for scheduling information (e.g., DCI) of SIB1. For another example, the MIB of the first cell implicitly indicates whether the first cell periodically transmits SIB1.

[0362] In some embodiments, whether the first cell periodically sends the SIB is determined based on a verification method of the MIB.

[0363] For example, if the first cell periodically sends the SIB, the MIB of the first cell uses the first verification method. If the first cell non-periodically sends the SIB, the MIB of the first cell uses the second verification method. At this time, if the terminal successfully verifies the MIB of the first cell using the first verification method, it is determined that the first cell periodically sends the SIB; otherwise, it is determined that the first cell non-periodically sends the SIB. Alternatively, if the terminal successfully verifies the MIB of the first cell using the second verification method, it is determined that the first cell non-periodically sends the SIB; otherwise, it is determined that the first cell periodically sends the SIB.

[0364] In some embodiments, whether the first cell periodically transmits the SIB is determined based on a check algorithm used by the MIB. For example, different check algorithms may correspond to different polynomials for generating a CRC.

[0365] In some embodiments, whether the first cell periodically sends the SIB is determined based on a check mask used by the MIB.

[0366] For example, taking CRC as an example, the check mask can be (CRC mask). For example, the MIB information bits and the bit sequence generated based on the polynomial are XORed to obtain a CRC of a specified length. The CRC of the specified length and the check mask are XORed and appended to the back end of the MIB, which is then sent uniformly by the network device to the terminal.

[0367] In some embodiments, whether the first cell periodically sends the SIB is determined based on whether the MIB includes the first bit.

[0368] For example, unused idle bits and / or reserved bits in the MIB may be used as the first bit. The number of the first bits may be one or more. Different values ​​of the first bit represent whether the first cell periodically sends the SIB.

[0369] Whether the first cell periodically sends the SIB is determined according to the indication content of the second bit included in the MIB.

[0370] In some embodiments, a new bit may be added to the MIB or an idle bit of the MIB may be occupied as the second bit. The number of the second bits may be one or more. The indication content of the second bit corresponds to the value of the second bit. Whether the first cell periodically transmits the SIB is determined based on the indication content of the second bit.

[0371] In some embodiments, the second network device of the second cell sends the cell configuration of the first cell. Exemplarily, the cell configuration can be used by the terminal to determine whether the first cell periodically transmits SIBs. For example, the cell configuration can be used by the terminal to determine whether to periodically transmit SIB1.

[0372] In some embodiments, the cell configuration includes at least one of the following:

[0373] First information, indicating whether the first cell periodically sends the SIB;

[0374] Second information, indicating whether the first cell sends the SIB based on an on-demand mechanism;

[0375] The third information is used by the terminal to send a first request to the first cell, and / or the third information is used by the terminal to send a second request to the second cell; the first request and / or the second request are used by the terminal to request SIB from the first cell.

[0376] In some embodiments, when the cell configuration includes the first information, the cell configuration may omit the second information.

[0377] In some embodiments, when the cell configuration includes the second information, the cell configuration may omit the first information.

[0378] In some embodiments, when the cell configuration includes the third information, the first information and the second information may be omitted from the cell configuration. For example, the cell configuration is equivalent to configuring the SIB of the first cell requested by the terminal through the first request and / or the second request.

[0379] In some embodiments, the third information may include at least one of the following:

[0380] A sending method of the second request, for example, the sending method may include: one-time sending and / or repeated sending;

[0381] Receive the time domain location information of the time window.

[0382] In some embodiments, if the third information does not include the time domain location information of the receiving time window, the sending mode of the second request may be assumed to be one-time sending, and the indication information of the sending mode may be omitted.

[0383] When the terminal recovers from the coverage hole, a method for acquiring the SIB of the first cell is determined according to whether the first cell periodically sends the SIB.

[0384] In some embodiments, the coverage hole herein may be an area without network coverage.

[0385] When the terminal receives the system broadcast change indication of the first cell, the method for obtaining the SIB of the first cell is determined according to whether the first cell periodically sends the SIB.

[0386] In some embodiments, if a terminal receives a system broadcast change indication for a first cell, it indicates that the first cell has updated its SIB. For example, if the first cell receives a system broadcast change indication, the system broadcast change indication may indicate whether SIB1 and / or SIBn have been updated, where n may be a positive integer greater than or equal to 2. If SIB1 has been updated, the terminal needs to obtain SIB1 for the first cell. If SIBn has been updated, the terminal needs to obtain SIB1 for the first cell and, based on SIB1, obtain the resource configuration of SIBn.

[0387] When the terminal has a positioning requirement, a method for acquiring the SIB of the first cell is determined according to whether the first cell periodically sends the SIB.

[0388] For example, when a terminal needs satellite positioning, it needs to obtain SIBs related to positioning. For example, if a terminal needs positioning, it needs to obtain SIB9 of the satellite positioning system timing. If the terminal needs to obtain SIB9, it needs to obtain SIB9 configuration information based on SIB1.

[0389] When the terminal receives downlink control information DCI indicating system information update from the first cell, the method for acquiring the SIB of the first cell is determined according to whether the first cell periodically sends the SIB.

[0390] In some embodiments, the terminal paging downlink control information DCI indicates a system information update, indicating that the SIB has been updated. Similarly, the terminal needs to stay in or access the first cell well, and needs to obtain the updated SIB. Therefore, it is necessary to determine a method for obtaining the SIB of the first cell.

[0391] When the validity period of the SIB of the first cell stored in the terminal expires, the method for obtaining the SIB of the first cell is determined according to whether the first cell periodically sends the SIB.

[0392] In some embodiments, the SIB of the first cell has a certain validity period. If the validity period expires, the terminal may not be able to determine whether the SIB is still valid and needs to re-acquire the SIB of the first cell. Therefore, it is necessary to determine a method for obtaining the SIB of the first cell.

[0393] S2202: The terminal determines whether the first cell periodically sends SIB.

[0394] In some embodiments, the terminal determines whether the first cell periodically sends the SIB based on the MIB and / or cell configuration of the first cell.

[0395] In some embodiments, the terminal determines whether the first cell periodically sends the SIB in the current time period based on the MIB and / or cell configuration of the first cell.

[0396] S2203: The terminal determines a method for obtaining the SIB of the first cell.

[0397] In some embodiments, the terminal determines a method for acquiring the SIB of the first cell according to whether the first cell periodically sends the SIB.

[0398] In some embodiments, the first cell periodically sends the SIB, and the SIB is received from the first cell at a corresponding time according to the period of the first cell sending the SIB.

[0399] In some embodiments, the first cell sends the SIB aperiodically, and a method for obtaining the SIB of the first cell is determined according to the cell type of the first cell.

[0400] In some embodiments, the first cell sends the SIB aperiodically, and if the first cell is a first type cell that sends the SIB on demand, it is determined to request the SIB from the first cell based on the request information.

[0401] In some embodiments, the first cell transmits the SIB aperiodically. If the first cell is a second type cell that does not transmit the SIB, it is determined to obtain the SIB of the first cell from a reference cell (or anchor cell) of the first cell.

[0402] In some embodiments, when the terminal has a need to reselect a cell, a method for acquiring the SIB of the first cell is determined according to whether the first cell periodically sends the SIB.

[0403] S2204: The terminal sends a second request to the second cell.

[0404] In some embodiments, the second cell may be the current cell of the terminal. For example, the second cell may be the cell where the terminal is currently camped.

[0405] In some embodiments, the second cell may be a regular cell where the terminal is currently located. The regular cell may be a cell that periodically sends an SSB and / or SIB.

[0406] In some embodiments, the terminal sends the second request to the first cell according to the determined manner of obtaining the SIB of the first cell by sending a second request to the second cell.

[0407] Exemplarily, the first cell is a cell that sends the SIB based on the terminal request, and the terminal sends the second request to the second cell.

[0408] Exemplarily, the first cell is a cell that sends SIB on demand, and the terminal sends the second request to the second cell.

[0409] Exemplarily, if the first cell sends the SIB based on a terminal request or sends the SIB on demand and the cell configuration obtains the SIB of the first cell based on the second request, the terminal sends the second request to the second cell.

[0410] In some embodiments, the terminal sends a second request to the second cell before accessing or camping on the first cell.

[0411] In some embodiments, the terminal sends an RRC message, a MAC message, or uplink control information (UCI) carrying the second request to the second cell.

[0412] S2205: The first cell and / or the second cell sends a request response.

[0413] In some embodiments, the request response may include: the SIB requested by the terminal sent by the first cell.

[0414] In some embodiments, the request response may be an RRC message indicating the SIB requested by the sending terminal.

[0415] In some embodiments, the request response may be an RRC message indicating the SIB to be broadcast.

[0416] In some embodiments, the request response may indicate whether to send the SIB requested by the terminal. If the request response indicates that the first cell and / or the second cell will send the SIB requested by the terminal, the terminal monitors the SIB sent by the first cell and / or the second cell.

[0417] In some embodiments, the request response may also carry resource location information of the SIB requested by the first cell and / or the second cell, so that the terminal can monitor the SIB at the resource location indicated by the resource location information, for example, monitor SIB1.

[0418] In some embodiments, the second request includes at least one of the following:

[0419] a cell identifier of the first cell;

[0420] Identification information of the requested SIB.

[0421] In some embodiments, the second request may include: identification information of the requested SIB. For example, the SIB requested by the terminal may be SIB1.

[0422] In some embodiments, the second request may omit the SIB identification information. For example, the SIB requested by the terminal before reselecting to the first cell may default to a designated SIB. The designated SIB may include but is not limited to SIB1.

[0423] In some embodiments, the cell identifier may include but is not limited to a physical cell identifier and / or a high-layer cell identifier.

[0424] S2206: The terminal determines whether the network device monitors the second request.

[0425] In some embodiments, the terminal listens for a request response to the second request within a receiving time window after sending the second request. If a request response is received within the time window, it is determined that the network has received the second request; otherwise, it is considered that the terminal has not received the request response.

[0426] In some embodiments, the terminal determines whether the network has received the second request based on whether the terminal has received the SIB requested by the terminal from the network. For example, if the terminal monitors the network sending the SIB requested by the terminal, it determines that the network has received the second request; otherwise, it may be considered that the network has not received the second request.

[0427] In some embodiments, the terminal determines whether the network has received the second request based on whether a request response to the second request is received. For example, if the terminal receives a request response sent by the first network device, it is determined that the network has received the second request; otherwise, it can be considered that the network has not received the second request.

[0428] S2207: Resend the second request to the second cell.

[0429] In some embodiments, the second request is resent to the second cell until the number of times the second request is sent reaches a maximum number.

[0430] In some embodiments, if it is determined that the network device has intercepted the second request, regardless of whether the network side sends the SIB requested by the terminal, the sending of the second request to the second cell is suspended.

[0431] In some embodiments, if the terminal has urgent business transmission, it may choose to access or reside in other cells that periodically send SSBs and / or SIBs.

[0432] As shown in FIG2C , an embodiment of the present disclosure provides a SIB request method, which is executed by a communication system. The method may include:

[0433] S2301: The network device sends network information to the terminal.

[0434] In some embodiments, the network device may be an access network device.

[0435] In some embodiments, the network device that sends the network information may be a first network device and / or a second network device. The second network device is different from the first network device. Exemplarily, the first network device and the second network device may be two adjacent access network devices.

[0436] The first network device is a network device of a first cell. The second network device may be a network device of a second cell.

[0437] The first cell and the second cell may be adjacent cells. For example, the first cell and the second cell may be co-frequency adjacent cells, or the first cell and the second cell may be inter-frequency adjacent cells.

[0438] The first cell and the second cell may be cells with overlapping coverage.

[0439] For carrier aggregation and / or dual connectivity scenarios, the second cell may be the primary cell of the first cell and the first cell may be the secondary cell. Alternatively, the first cell may be a conventional secondary cell and the second cell may be the primary and secondary cells.

[0440] In some embodiments, the second cell may be the current cell of the terminal. Exemplarily, when the terminal is in an RRC connected state, the second cell may be the current serving cell of the terminal. Furthermore, exemplarily, when the terminal is in an RRC idle state and / or an RRC inactive state, the second cell may be the current camped cell of the terminal.

[0441] In some embodiments, the network device broadcasts, unicasts, or multicasts the network information.

[0442] In some embodiments, the network information may be the MIB of the first cell.

[0443] In some embodiments, the network information may be a cell configuration of the first cell.

[0444] In some embodiments, the network information may be used by the terminal to determine whether the first cell periodically sends the SIB.

[0445] In some embodiments, the network information may be used by the terminal to determine whether the first cell periodically transmits SIB1.

[0446] In some embodiments, periodically sending the SIB may include: sending the SIB according to a semi-statically configured period, and / or sending the SIB according to a period corresponding to a periodic configuration or a dynamic configuration.

[0447] In some embodiments, assuming that the first cell transmits the SIB aperiodically, the first cell may not transmit the SIB, transmit the SIB based on an on-demand mechanism, or transmit the SIB based on a request of the terminal.

[0448] The SIBs sent based on the on-demand mechanism may include but are not limited to at least one of the following:

[0449] The cell sends the SIB according to its own needs. For example, when the cell wants to establish downlink synchronization with the terminal or reestablish a downlink connection, it can be considered that a demand has been generated, and therefore the cell can actively broadcast the SIB.

[0450] The cell sends the SIB according to the needs of the terminal. For example, when the terminal needs to obtain the SIB, it can send a request to the network device. In this way, the network device will know that the terminal needs to obtain the SIB and then determine whether to broadcast the SIB.

[0451] In some embodiments, the terminal may request an SIB from a cell that aperiodically sends an SIB by sending a wake-up signal (WUS).

[0452] In some embodiments, the first network device of the first cell periodically broadcasts the MIB.

[0453] In some embodiments, the first network device of the first cell determines the MIB of the first cell according to whether the first cell periodically sends the SIB.

[0454] In some embodiments, the first network device of the first cell determines the MIB of the first cell according to whether the first cell periodically sends SIB1.

[0455] In some embodiments, the first network device of the first cell determines the MIB of the first cell according to whether the first cell periodically sends the SIB, including but not limited to at least one of the following:

[0456] Determining a verification method for the MIB according to whether the first cell periodically sends the SIB;

[0457] determining, according to whether the first cell periodically sends the SIB, whether the MIB includes the first bit;

[0458] The indication content of the second bit included in the MIB is determined according to whether the first cell periodically sends the SIB.

[0459] In some embodiments, the MIB of the first cell explicitly indicates whether the first cell periodically transmits the SIB. For example, the MIB of the first cell includes an indication bit indicating whether the first cell periodically transmits the SIB. For example, the MIB of the first cell explicitly indicates whether the first cell periodically transmits SIB1.

[0460] In some embodiments, the MIB of the first cell implicitly indicates whether the first cell periodically transmits the SIB. For example, when the first cell aperiodically transmits the SIB, the MIB may include PUCCH resources for scheduling information (e.g., DCI) of SIB1. For another example, when the first cell periodically transmits the SIB, the MIB does not include PUCCH resources for scheduling information (e.g., DCI) of SIB1. For another example, the MIB of the first cell implicitly indicates whether the first cell periodically transmits SIB1.

[0461] In some embodiments, whether the first cell periodically sends the SIB is determined based on a verification method of the MIB.

[0462] For example, if the first cell periodically sends the SIB, the MIB of the first cell uses the first verification method. If the first cell non-periodically sends the SIB, the MIB of the first cell uses the second verification method. At this time, if the terminal successfully verifies the MIB of the first cell using the first verification method, it is determined that the first cell periodically sends the SIB; otherwise, it is determined that the first cell non-periodically sends the SIB. Alternatively, if the terminal successfully verifies the MIB of the first cell using the second verification method, it is determined that the first cell non-periodically sends the SIB; otherwise, it is determined that the first cell periodically sends the SIB.

[0463] In some embodiments, whether the first cell periodically transmits the SIB is determined based on a check algorithm used by the MIB. For example, different check algorithms may correspond to different polynomials for generating cyclic redundancy check (CRC).

[0464] In some embodiments, whether the first cell periodically sends the SIB is determined based on a check mask used by the MIB.

[0465] For example, taking CRC as an example, the check mask can be (CRC mask). For example, the MIB information bits and the bit sequence generated based on the polynomial are XORed to obtain a CRC of a specified length. The CRC of the specified length and the check mask are XORed and appended to the back end of the MIB, which is then sent uniformly by the network device to the terminal.

[0466] In some embodiments, whether the first cell periodically sends the SIB is determined based on whether the MIB includes the first bit.

[0467] For example, unused idle bits and / or reserved bits in the MIB may be used as the first bit. The number of the first bits may be one or more. Different values ​​of the first bit represent whether the first cell periodically sends the SIB.

[0468] Whether the first cell periodically sends the SIB is determined according to the indication content of the second bit included in the MIB.

[0469] In some embodiments, a new bit may be added to the MIB or an idle bit of the MIB may be occupied as the second bit. The number of the second bits may be one or more. The indication content of the second bit corresponds to the value of the second bit. Whether the first cell periodically transmits the SIB is determined based on the indication content of the second bit.

[0470] In some embodiments, the second network device of the second cell sends the cell configuration of the first cell. Exemplarily, the cell configuration can be used by the terminal to determine whether the first cell periodically transmits SIBs. For example, the cell configuration can be used by the terminal to determine whether to periodically transmit SIB1.

[0471] In some embodiments, the cell configuration includes at least one of the following:

[0472] First information, indicating whether the first cell periodically sends the SIB;

[0473] Second information, indicating whether the first cell sends the SIB based on an on-demand mechanism;

[0474] The third information is used by the terminal to send a first request to the first cell, and / or the third information is used by the terminal to send a second request to the second cell; the first request and / or the second request are used by the terminal to request SIB from the first cell.

[0475] In some embodiments, when the cell configuration includes the first information, the cell configuration may omit the second information.

[0476] In some embodiments, when the cell configuration includes the second information, the cell configuration may omit the first information.

[0477] In some embodiments, when the cell configuration includes the third information, the first information and the second information may be omitted from the cell configuration. For example, the cell configuration is equivalent to configuring the SIB of the first cell requested by the terminal through the first request and / or the second request.

[0478] In some embodiments, the third information may include at least one of the following:

[0479] A sending mode of the first request, for example, the sending mode may include: one-time sending and / or repeated sending;

[0480] Receive the time domain location information of the time window.

[0481] In some embodiments, if the third information does not include the time domain location information of the receiving time window, the sending mode of the first request may be assumed to be one-time sending, and the indication information of the sending mode may be omitted.

[0482] When the terminal recovers from the coverage hole, a method for acquiring the SIB of the first cell is determined according to whether the first cell periodically sends the SIB.

[0483] In some embodiments, the coverage hole herein may be an area without network coverage.

[0484] When the terminal receives the system broadcast change indication of the first cell, the method for obtaining the SIB of the first cell is determined according to whether the first cell periodically sends the SIB.

[0485] In some embodiments, if a terminal receives a system broadcast change indication for a first cell, it indicates that the first cell has updated its SIB. For example, if the first cell receives a system broadcast change indication, the system broadcast change indication may indicate whether SIB1 and / or SIBn have been updated, where n may be a positive integer greater than or equal to 2. If SIB1 has been updated, the terminal needs to obtain SIB1 for the first cell. If SIBn has been updated, the terminal needs to obtain SIB1 for the first cell and, based on SIB1, obtain the resource configuration of SIBn.

[0486] When the terminal has a positioning requirement, a method for acquiring the SIB of the first cell is determined according to whether the first cell periodically sends the SIB.

[0487] For example, when a terminal needs satellite positioning, it needs to obtain SIBs related to positioning. For example, if a terminal needs positioning, it needs to obtain SIB9 of the satellite positioning system timing. If the terminal needs to obtain SIB9, it needs to obtain SIB9 configuration information based on SIB1.

[0488] When the terminal receives downlink control information DCI indicating system information update from the first cell, the method for acquiring the SIB of the first cell is determined according to whether the first cell periodically sends the SIB.

[0489] In some embodiments, the terminal paging downlink control information DCI indicates a system information update, indicating that the SIB has been updated. Similarly, the terminal needs to stay in or access the first cell well, and needs to obtain the updated SIB. Therefore, it is necessary to determine a method for obtaining the SIB of the first cell.

[0490] When the validity period of the SIB of the first cell stored in the terminal expires, the method for obtaining the SIB of the first cell is determined according to whether the first cell periodically sends the SIB.

[0491] In some embodiments, the SIB of the first cell has a certain validity period. If the validity period expires, the terminal may not be able to determine whether the SIB is still valid and needs to re-acquire the SIB of the first cell. Therefore, it is necessary to determine a method for acquiring the SIB of the first cell.

[0492] S2302: The terminal determines whether the first cell periodically sends SIB.

[0493] In some embodiments, the terminal determines whether the first cell periodically sends the SIB based on the MIB and / or cell configuration of the first cell.

[0494] In some embodiments, the terminal determines whether the first cell periodically sends the SIB in the current time period based on the MIB and / or cell configuration of the first cell.

[0495] S2303: The terminal determines a method for obtaining the SIB of the first cell.

[0496] In some embodiments, the terminal determines a method for acquiring the SIB of the first cell according to whether the first cell periodically sends the SIB.

[0497] In some embodiments, the first cell periodically sends the SIB, and the SIB is received from the first cell at a corresponding time according to the period of the first cell sending the SIB.

[0498] In some embodiments, the first cell sends the SIB aperiodically, and a method for obtaining the SIB of the first cell is determined according to the cell type of the first cell.

[0499] In some embodiments, the first cell sends the SIB aperiodically, and if the first cell is a first type cell that sends the SIB on demand, it is determined to request the SIB from the first cell based on the request information.

[0500] In some embodiments, the first cell transmits the SIB aperiodically. If the first cell is a second type cell that does not transmit the SIB, it is determined to obtain the SIB of the first cell from a reference cell (or anchor cell) of the first cell.

[0501] In some embodiments, when the terminal has a need to reselect a cell, a method for acquiring the SIB of the first cell is determined according to whether the first cell periodically sends the SIB.

[0502] Exemplarily, the terminal has a need for cell reselection and the first cell aperiodically sends the SIB. The terminal determines to send a first request to the first cell requesting the SIB of the first cell.

[0503] For example, the terminal needs to reselect a cell and the first cell aperiodically sends an SIB. The terminal determines to send a first request to the first cell requesting the SIB of the first cell before reselecting to the first cell.

[0504] Before reselecting to the first cell, a first request is sent to the first cell, where the first request may be used to request an SIB.

[0505] For example, during cell reselection, the terminal sends a first request to the first cell.

[0506] In some embodiments, the first request may include identification information of the requested SIB. For example, the SIB requested by the terminal may be SIB1. In some embodiments, the first request may omit the SIB identification information. For example, the SIB requested by the terminal before reselecting to the first cell may default to a designated SIB. The designated SIB may include, but is not limited to, SIB1.

[0507] In some embodiments, the first request may further include a cell identifier of the first cell. It is noteworthy that if the terminal sends the first request to the first cell, the cell identifier of the first cell is optional. For example, if the terminal sends the first request in the same resource location as the first cell, the first request may not include the cell identifier of the first cell.

[0508] In some embodiments, the terminal may request the first cell for an SIB based on Msg1 of the four-step random access request.

[0509] In some embodiments, the terminal may request the first cell for SIB based on Msg3 of the four-step random access request.

[0510] In some embodiments, the terminal may request the first cell for SIB based on MsgA of the two-step random access request.

[0511] In some embodiments, the terminal needs to reselect a cell and the first cell aperiodically sends an SIB. The terminal determines to send a first request to the first cell requesting the SIB of the first cell after reselecting to the first cell.

[0512] As another example, the terminal has a need for cell reselection and the first cell aperiodically sends the SIB. The terminal determines to send a second request to the second cell requesting the SIB of the first cell.

[0513] In some embodiments, the network device may reserve a specific random access preamble code. When the terminal sends a random access message carrying the specific random access code, it can be considered that the terminal requests the SIB from the network device.

[0514] In some embodiments, there are multiple specific random access preambles. For example, different specific random access preambles correspond to different SIBs. In this way, the terminal selects the corresponding specific random access preamble to send a random access message based on the correspondence and the SIB it needs to request.

[0515] S2304: The terminal sends a first request to the first cell.

[0516] In some embodiments, the terminal sends the first request to the first cell according to the determined manner of obtaining the SIB of the first cell by sending a first request to the first cell.

[0517] Exemplarily, the first cell is a cell that sends the SIB based on a terminal request, and the terminal sends the first request to the first cell.

[0518] Exemplarily, the first cell is a cell that sends SIB on demand, and the terminal sends the first request to the first cell.

[0519] Exemplarily, if the first cell sends the SIB based on a terminal request or sends the SIB on demand and the cell configuration obtains the SIB of the first cell based on the first request, the terminal sends the first request to the first cell.

[0520] In some embodiments, the terminal needs to reselect a cell and the first cell aperiodically sends an SIB. The terminal determines to send a first request to the first cell requesting the SIB of the first cell after reselecting to the first cell.

[0521] For example, when the terminal detects the MIB or completes downlink synchronization with the first cell, it can be considered that the terminal has reselected the first cell.

[0522] After reselecting the first cell, the terminal may request the SIB from the first cell.

[0523] The first request may include but is not limited to requesting the SIB from the first cell during the process of the terminal establishing a connection with the first cell.

[0524] In some embodiments, after accessing or camping on the first cell, the terminal sends the first request to the first cell.

[0525] S2305: The first cell sends a request response.

[0526] In some embodiments, the request response may include: the SIB requested by the terminal sent by the first cell.

[0527] In some embodiments, the request response may be an RRC message indicating the SIB requested by the sending terminal.

[0528] In some embodiments, the request response may be an RRC message indicating the SIB to be broadcast.

[0529] In some embodiments, the request response may indicate whether to send the SIB requested by the terminal. If the request response indicates that the first cell and / or the second cell will send the SIB requested by the terminal, the terminal monitors the SIB sent by the first cell and / or the second cell.

[0530] In some embodiments, the request response may also carry resource location information of the SIB requested by the first cell and / or the second cell, so that the terminal can monitor the SIB at the resource location indicated by the resource location information, for example, monitor SIB1.

[0531] S2306: The terminal determines whether the network device has monitored the first request.

[0532] In some embodiments, the terminal listens for a request response to the first request within a receiving time window after sending the first request. If a request response is heard within the time window, it is determined that the network device has heard the first request; otherwise, it is considered that the terminal has not heard the request response.

[0533] In some embodiments, the terminal determines whether the network has received the first request based on whether the terminal has received the SIB requested by the terminal from the network. For example, if the terminal monitors the first network device sending the SIB requested by the terminal, the terminal determines that the network has received the first request; otherwise, the terminal may determine that the network has not received the first request.

[0534] In some embodiments, the terminal determines whether the network has received the first request based on whether a request response to the first request is received. For example, if the terminal receives a request response sent by the first network device, it is determined that the network has received the first request; otherwise, it can be considered that the network has not received the first request.

[0535] S2307: Continue to send the first request to the first cell.

[0536] In some embodiments, if it is determined that the network device has not heard the first request, the first request is resent.

[0537] In some embodiments, when it is determined that the network device has not heard the first request, the transmission power is increased and the first request is resent until the number of transmissions of the first request reaches a maximum number or the transmission power of the first request reaches a maximum transmission power.

[0538] In some embodiments, if it is determined that the network device has intercepted the first request, regardless of whether the network side sends the SIB requested by the terminal, the sending of the first request to the network device is suspended.

[0539] In some embodiments, if the terminal has urgent business transmission, it may choose to access or reside in other cells that periodically send SSBs and / or SIBs.

[0540] As shown in FIG3A , an embodiment of the present disclosure provides a method for requesting a SIB, which can be executed by a terminal. The method may include:

[0541] S3101: Receive network information.

[0542] In some embodiments, the terminal receives the MIB of the first cell.

[0543] In some embodiments, the terminal receives the cell configuration of the first cell. Exemplarily, the terminal receives the cell configuration of the first cell in the second cell.

[0544] In the embodiments of the present disclosure, the relevant description of network information can be found in the embodiment corresponding to FIG2A .

[0545] S3102: Determine whether the first cell periodically sends SIB.

[0546] In some embodiments, the terminal determines whether the first cell periodically sends SIB1 based on received network information.

[0547] In some embodiments, the optional steps of S3102 may refer to any embodiment of S2102 corresponding to FIG. 2A .

[0548] S3103: Determine a method for obtaining the SIB of the first cell.

[0549] In some embodiments, the terminal determines a method for acquiring the SIB of the first cell based on the determination result.

[0550] In some embodiments, optional implementations of S3103 may refer to any embodiment of S2103 corresponding to FIG2A .

[0551] S3104: The terminal sends a first request.

[0552] In some embodiments, the terminal determines that the network side sends the SIB based on the terminal's request, and then the terminal sends a first request to the first cell.

[0553] In some embodiments, the terminal sends a first request to the first cell before accessing or camping on the first cell.

[0554] In some embodiments, after accessing or camping on the first cell, the terminal sends the first request to the first cell.

[0555] In some embodiments, the optional implementation of S3104 can refer to any embodiment of S2104 in FIG. 2A.

[0556] In some embodiments, optional implementations of S3104 may refer to any embodiment of S2304 corresponding to FIG2C .

[0557] S3105: Receive request response.

[0558] In some embodiments, a request response sent by the first cell is received.

[0559] In some embodiments, a request response sent by the second cell is received.

[0560] In some embodiments, the request response sent by the network side is received within a receiving time window after sending the first request.

[0561] In some embodiments, the optional implementation of S3105 can refer to any embodiment of S2105 in FIG. 2A.

[0562] In some embodiments, optional implementations of S3105 may refer to any embodiment of S2305 corresponding to FIG2C .

[0563] S3106: Determine whether the network device receives the first request.

[0564] In some embodiments, it is determined whether the network device has received the first request based on a reception result of the request response.

[0565] In some embodiments, the optional implementation of S3106 can refer to any embodiment of S2106 in FIG. 2A.

[0566] In some embodiments, optional implementations of S3106 may refer to any embodiment of S2306 corresponding to FIG2C .

[0567] S3107: Resend the first request.

[0568] In some embodiments, upon determining that the network device did not receive the first request, the first request is resent.

[0569] In some embodiments, if it is determined that the network device has not heard the first request, the first request is resent.

[0570] In some embodiments, when it is determined that the network device has not heard the first request, the transmission power is increased and the first request is resent until the number of transmissions of the first request reaches a maximum number or the transmission power of the first request reaches a maximum transmission power.

[0571] In some embodiments, if it is determined that the network device has intercepted the first request, regardless of whether the network side sends the SIB requested by the terminal, the sending of the first request to the network device is suspended.

[0572] In some embodiments, if the terminal has urgent business transmission, it may choose to access or reside in other cells that periodically send SSBs and / or SIBs.

[0573] In some embodiments, the optional implementation of S3107 can refer to any embodiment of S2107 in FIG. 2A.

[0574] In some embodiments, optional implementations of S3107 may refer to any embodiment of S2307 corresponding to FIG2C .

[0575] As shown in FIG3B , an embodiment of the present disclosure provides a method for requesting a SIB, which can be executed by a terminal. The method may include:

[0576] S3201: Receive network information.

[0577] In some embodiments, the terminal receives the MIB of the first cell.

[0578] In some embodiments, the terminal receives the cell configuration of the first cell. Exemplarily, the terminal receives the cell configuration of the first cell in the second cell.

[0579] In the embodiment of the present disclosure, the relevant description of network information can be found in the embodiment corresponding to FIG2B .

[0580] S3202: Determine whether the first cell periodically sends SIB.

[0581] In some embodiments, the terminal determines whether the first cell periodically sends SIB1 based on received network information.

[0582] In some embodiments, the optional steps of S3202 may refer to any embodiment of S2202 corresponding to FIG. 2B .

[0583] S3203: Determine a method for obtaining the SIB of the first cell.

[0584] In some embodiments, the terminal determines a method for acquiring the SIB of the first cell based on the determination result.

[0585] In some embodiments, optional implementations of S3203 may refer to any embodiment of S2203 corresponding to FIG2B .

[0586] S3204: The terminal sends a second request.

[0587] In some embodiments, the terminal sends a second request to the second cell.

[0588] In some embodiments, the terminal determines that the network side sends the SIB based on the terminal's request, and then the terminal sends a second request to the second cell.

[0589] In some embodiments, the terminal sends a second request to the second cell before accessing or camping on the first cell.

[0590] In some embodiments, after accessing or camping on the first cell, the terminal sends a second request to the second cell.

[0591] In some embodiments, the optional implementation of S3204 can refer to any embodiment of S2204 in FIG. 2B.

[0592] S3205: Receive request response.

[0593] In some embodiments, a request response sent by the first cell is received.

[0594] In some embodiments, a request response sent by the second cell is received.

[0595] In some embodiments, the request response sent by the network side is received within a receiving time window after sending the second request.

[0596] In some embodiments, the optional implementation of S3105 can refer to any embodiment of S2205 in FIG. 2B.

[0597] S3206: Determine whether the network device receives the second request.

[0598] In some embodiments, it is determined whether the network device has received the second request based on the result of receiving the request response.

[0599] In some embodiments, the optional implementation of S3206 can refer to any embodiment of S2206 in FIG. 2B.

[0600] S3207: Resend the second request.

[0601] In some embodiments, upon determining that the network device has not received the second request, the second request is resent.

[0602] In some embodiments, if it is determined that the network device has not heard the second request, the second request is resent.

[0603] In some embodiments, when it is determined that the network device has not heard the second request, the transmission power is increased and the second request is resent until the transmission times of the second request reaches a maximum or the transmission power of the second request reaches a maximum transmission power.

[0604] In some embodiments, if it is determined that the network device has intercepted the second request, regardless of whether the network side sends the SIB requested by the terminal, the sending of the second request to the network device is suspended.

[0605] In some embodiments, if the terminal has urgent business transmission, it may choose to access or reside in other cells that periodically send SSBs and / or SIBs.

[0606] In some embodiments, optional implementations of S3207 may refer to any embodiment of S2207 in FIG. 2B .

[0607] As shown in FIG4 , an embodiment of the present disclosure provides a method for requesting a SIB, which may be performed by a first network device of a first cell. The method may include:

[0608] S4101: Send MIB.

[0609] In some embodiments, a MIB verification method is determined based on whether the first cell periodically transmits the SIB. Exemplarily, a MIB verification algorithm is determined based on whether the first cell periodically transmits the SIB. Furthermore, an MIB verification mask is determined based on whether the first cell periodically transmits the SIB.

[0610] In some embodiments, whether the MIB includes the first bit is determined based on whether the first cell periodically sends the SIB.

[0611] In some embodiments, the indication content of the second bit included in the MIB is determined based on whether the first cell periodically sends the SIB.

[0612] In the embodiments of the present disclosure, optional implementations of S4101 can be found in the corresponding embodiments of Figures 2A to 2C.

[0613] S4102: Receive the first request.

[0614] In some embodiments, the first request is used by the terminal to request the SIB of the first cell.

[0615] In some embodiments, the first request may be a request message sent by the terminal before accessing or camping on the first cell.

[0616] In some embodiments, the first request may be a request message sent by the terminal after accessing or camping on the first cell.

[0617] In some embodiments, the first request comprises a random access request.

[0618] In some embodiments, the random access request includes a first random access preamble indicating a requested SIB.

[0619] In some embodiments, the relevant description of the first request can refer to the embodiments corresponding to Figure 2A and / or Figure 2C.

[0620] S4103: Send request response.

[0621] In some embodiments, the request response is used by the terminal to determine whether the first network device receives the first request.

[0622] In some embodiments, the request response comprises a random access response.

[0623] In some embodiments, the random access response is used to indicate to the terminal that the first network device has determined that the random access request requesting the SIB has been received.

[0624] In some embodiments, after receiving the first request, a request response is sent within a receiving time window.

[0625] In some embodiments, the optional implementation of S4103 can refer to any optional implementation of S2105 in Figure 2A.

[0626] In some embodiments, the optional implementation of S4103 can refer to any optional implementation of S2305 in Figure 2C.

[0627] S4104: Continue to receive the first request.

[0628] In some embodiments, the first request to continue receiving may be a first request after the transmission power is increased.

[0629] In some embodiments, for the related description of the first request that is continued to be received, reference can be made to any optional embodiment of S2107 in FIG. 2A .

[0630] In some embodiments, for a description of the first request that is continued to be received, please refer to any optional embodiment of S2307 in FIG2C .

[0631] It is worth noting that:

[0632] In some embodiments, S4103 and S4104 are optional steps. For example, if the first cell determines not to respond to the request of the terminal, it may not send a request response and / or continue to receive the first request.

[0633] In some embodiments, S4101 is an optional step. For example, the MIB of the first cell may be sent by the first cell or by the second cell. If the MIB of the first cell is sent by the second cell, or if the terminal determines whether the first cell periodically sends the SIB based on the cell configuration of the first cell sent by the second cell, S4101 may be omitted.

[0634] In some embodiments, S4104 may be an optional step, for example, the terminal may not continue to send the first request. For example, if the cell configuration does not configure the terminal to repeatedly send the first request, the second network device does not need to continue to receive the first request.

[0635] As shown in FIG5 , an embodiment of the present disclosure provides a method for requesting system information SIB, where the method is performed by a second network device of a second cell, and includes:

[0636] S5101: Send the cell configuration of the first cell.

[0637] In some embodiments, the cell configuration includes at least one of the following:

[0638] First information, indicating whether the first cell periodically sends the SIB;

[0639] Second information, indicating whether the first cell sends the SIB based on an on-demand mechanism;

[0640] The third information is used by the terminal to send a first request to the first cell, and / or the third information is used by the terminal to send a second request to the second cell; the first request and / or the second request are used by the terminal to request SIB from the first cell.

[0641] In some embodiments, when the cell configuration includes the first information, the cell configuration may omit the second information.

[0642] In some embodiments, when the cell configuration includes the second information, the cell configuration may omit the first information.

[0643] In some embodiments, when the cell configuration includes the third information, the first information and the second information may be omitted from the cell configuration. For example, the cell configuration is equivalent to configuring the SIB of the first cell requested by the terminal through the first request and / or the second request.

[0644] In some embodiments, the relevant description of the cell configuration can be found in the corresponding embodiments of Figures 2A to 2C.

[0645] In some embodiments, S5101 is an optional step. For example, the cell configuration of the first cell may be sent by the first cell or by another cell. If the terminal determines whether the first cell periodically sends the SIB based on the MIB of the first cell, then the second network device of the second cell does not need to send the cell configuration of the first cell.

[0646] In some other embodiments, S5101 may be executed separately. For example, the second cell sends the cell configuration of the first cell to the terminal, but the terminal directly requests the SIB from the first cell instead of requesting the SIB from the second cell.

[0647] S5102: Receive a second request sent by the terminal.

[0648] The second request is used by the terminal to request the first cell to send a system information block SIB.

[0649] In some embodiments, the second request includes at least one of the following:

[0650] a cell identifier of the first cell;

[0651] Identification information of the requested SIB.

[0652] In some embodiments, the second request may include: identification information of the requested SIB. For example, the SIB requested by the terminal may be SIB1.

[0653] In some embodiments, the second request may omit the SIB identification information. For example, the SIB requested by the terminal before reselecting to the first cell may default to a designated SIB. The designated SIB may include but is not limited to SIB1.

[0654] In some embodiments, the cell identifier may include but is not limited to a physical cell identifier and / or a high-layer cell identifier.

[0655] In some embodiments, the optional implementation of S5102 can refer to any optional implementation of S2305 in Figure 2C.

[0656] In some embodiments, the second network device receives a second request sent by the terminal when the terminal has a cell reselection requirement.

[0657] S5103: Send a second request.

[0658] In some embodiments, the second request is sent to the first cell.

[0659] For example, based on the interface and / or tunnel between the first cell and the second cell, the second request is sent to the first cell.

[0660] In some embodiments, if the second network device sends the SIB instead of the first cell, the second network device may send the SIB of the first cell to the terminal. In this case, the second network device does not need to send the second request to the first cell.

[0661] In some embodiments, if the second network device is a cell that does not send SIBs, the second network device may send SIBs to other cells instead of the first cell.

[0662] S5104: Continue to receive the second request.

[0663] In some embodiments, S5104 may be an optional step, for example, the terminal may not continue to send the second request. For example, if the cell configuration does not configure the terminal to repeatedly send the second request, the second network device does not need to continue to receive the second request.

[0664] The embodiment of the present invention provides a process of RRC-IDLE / INACTIVE requesting SIB1, so that the network side does not need to send SIB1 periodically, thereby further obtaining network energy saving gains.

[0665] Solution 1: SIB1 request of the target cell initiated based on cell reselection, which may specifically include: sending a SIB1 request to the target cell before cell reselection to trigger the target cell to trigger the terminal to send SIB1 to the terminal in the reselected target cell. The target cell corresponds to the aforementioned first cell.

[0666] As shown in FIG6A , an embodiment of the present disclosure provides a method, which may include:

[0667] Step 1: The state of a cell switches and enters the execution of the Network Energy Saving (NES) mechanism.

[0668] Step 2: The terminal receives the cell configuration of SIB1 sent on demand by the cell for which reselection is requested in the regular cell.

[0669] Step 3: Send an uplink (UP) WUS to the target cell. The terminal evaluates cell reselection and determines the target cell for cell reselection. If the target cell is not sending SIB1, the terminal triggers the SIB1 request process to the target cell, for example, sending a WUS. The WUS can be a random access preamble. The random access preamble can be a random access preamble reserved by the system. The sending of the random access preamble indicates a request for SIB1 or SIB and OSI.

[0670] Step 4: The terminal monitors the SIB1 and / or OSI sent by the target cell.

[0671] The terminal monitors the System Information Radio Network Temporary Identifier (SI-RNTI) in the target cell to receive SIB1. If SIB1 is not received according to the SIB1 transmission period, the terminal continues to increase the power and transmit WUS until SIB1 is received, the terminal's maximum uplink transmit power is reached, the cell's maximum uplink transmit power is reached, or the maximum number of random access preamble transmissions is reached. The terminal then notifies higher layers of the SIB1 request failure.

[0672] Before steps 1 and 2, the terminal receives a system broadcast in the current cell, which includes configuration information about neighboring cells, such as at least one of: configuration information for sending UL WUS, cell common configuration, SIB broadcast status indication information, etc. The configuration is associated with a neighboring cell ID (such as PCI and frequency).

[0673] Before steps 1, 2, and 3, the current cell and the neighboring cell exchange indication information about the cell SIB1 broadcast status.

[0674] Before initiating a UL WUS request for SIB1, the terminal first confirms the broadcast status of SIB1 in the target cell, and then requests SIB1 if there is no broadcast.

[0675] Furthermore, the terminal may obtain an SIB1 broadcast status indication (ie, whether it is in a broadcast state) based on reception of the target cell MIB.

[0676] The MIB indicates the SIB1 broadcast status. For CD-SSB or SSB sent on the synchronization grid,

[0677] Option 1: The SSB subcarrier spacing offset (ssb-SubcarrierOffset) in the MIB can be used to indicate that RMSI is not included and SIB1 can be requested, for example, ssb-SubcarrierOffset = 30 (FR1) or ssb-SubcarrierOffset = 14 (FR2). Option 2: The spare bit in the MIB can also indicate that SIB1 is not included but can be requested.

[0678] Option 3: A separate CRC is specified for the MIB. This CRC is different from the traditional CRC and is used to indicate that SIB1 is not available but can be requested. This new CRC can be calculated based on the original CRC, for example, the new CRC is equal to the original CRC + 1.

[0679] Option 4: Define at least two CRC masks, one of which indicates that SIB1 is not present but can be requested. Another CRC mask indicates that no SIB1 is sent. A third CRC mask can also be defined to indicate that SIB1 is sent.

[0680] Option 5: The MIB carries an indication information to indicate that there is no SIB to be requested, or there is no SIB, or there is a SIB, etc.

[0681] Solution 2: Based on the SIB1 request of the target cell initiated by cell reselection, a SIB1 request is sent to the current cell before cell reselection.

[0682] As shown in FIG6B , an embodiment of the present disclosure provides a method, which may include:

[0683] Step 1: The state of a cell switches and enters the execution of the Network Energy Saving (NES) mechanism.

[0684] Step 2: The terminal receives the cell configuration of SIB1 sent on demand by the cell for which reselection is requested in the regular cell.

[0685] Step 3: Send an uplink (UP) WUS to the current cell. The terminal evaluates cell reselection and determines the target cell for cell reselection. If the target cell is not sending SIB1, the terminal triggers the SIB1 request process to the target cell, for example, by sending a WUS. The WUS can be a random access preamble. The random access preamble can be a random access preamble reserved by the system. The sending of the random access preamble indicates a request for SIB1 or SIB and OSI.

[0686] Step 4: The current cell sends an SI request to the target cell;

[0687] Step 5: The target cell sends SIB1 and / or OSI.

[0688] The terminal evaluates the cell reselection and determines the target cell for cell reselection. If the target cell does not send SIB1, the terminal triggers the SIB1 request process to the current cell.

[0689] For example, RRCSystemInfoReq terminal st is sent to the current cell, and the signaling includes the cell ID requesting SIB1 and / or indication information requesting SIB1, and may also indicate an indication requesting OSI and / or indication information of SIBx.

[0690] After receiving the indication, the current cell forwards the SIB1 request indication, and / or OSI request indication, and / or SIBx indication information (SIBx means per SIB request) to the target cell.

[0691] The terminal monitors the SI-RNTI in the target cell and receives SIB1.

[0692] Before steps 1 and 2, the terminal receives a system broadcast in the current cell, which includes configuration information about neighboring cells, such as at least one of: cell common configuration, SIB broadcast status indication information, etc. The configuration is associated with a neighboring cell ID (such as PCI and frequency).

[0693] Before steps 1, 2, and 3, the current cell and the neighboring cell exchange indication information about the cell SIB1 broadcast status.

[0694] Before initiating a SIB1 request, the terminal first confirms the broadcast status of the target cell SIB1, and then requests SIB1 if there is no broadcast.

[0695] Furthermore, the terminal may obtain an SIB1 broadcast status indication (ie, whether it is in a broadcast state) based on reception of the target cell MIB.

[0696] The MIB indicates the SIB1 broadcast status. For CD-SSB or SSB sent on the synchronization grid,

[0697] Option 1: The ssb-SubcarrierOffset in the MIB may indicate that RMSI is not included and SIB1 may be requested, for example, ssb-SubcarrierOffset = 30 (FR1) or ssb-SubcarrierOffset = 14 (FR2). Option 2: The spare bit in the MIB may also indicate that SIB1 is not included but may be requested.

[0698] Option 3: A separate CRC is specified for the MIB. This CRC is different from the traditional CRC and is used to indicate that SIB1 is not available but can be requested. This new CRC can be calculated based on the original CRC, for example, the new CRC is equal to the original CRC + 1.

[0699] Option 4: Define at least two CRC masks, one of which indicates that SIB1 is not present but can be requested. Another CRC mask indicates that no SIB1 is sent. A third CRC mask can also be defined to indicate that SIB1 is sent.

[0700] Option 5: The MIB carries an indication information to indicate that there is no SIB to be requested, or there is no SIB, or there is a SIB, etc.

[0701] Solution 3: SIB1 request of the target cell initiated based on cell reselection -> SIB1 request is sent to the current cell after cell reselection.

[0702] As shown in FIG6C , an embodiment of the present disclosure provides a method, which may include:

[0703] Step 1: The state of a cell switches and enters the execution of the Network Energy Saving (NES) mechanism.

[0704] Step 2: The terminal receives the cell configuration of SIB1 sent on demand by the cell for which reselection is requested in the regular cell.

[0705] Step 3: After reselecting the target cell, the terminal sends an uplink (UP) WUS to the target cell. The terminal evaluates the cell reselection and determines the target cell for cell reselection. If the target cell is not sending SIB1, the terminal triggers the SIB1 request process to the target cell, for example, by sending a WUS. The WUS can be a random access preamble. The random access preamble can be a random access preamble reserved by the system. The transmission of the random access preamble indicates a request for SIB1 or SIB and OSI.

[0706] Step 4: The target cell sends SIB1 and / or OSI.

[0707] The terminal evaluates cell reselection, determines the target cell for cell reselection, and performs cell reselection. If the target cell does not send SIB1, then:

[0708] Option a: The terminal triggers a SIB1 request process to the target cell, for example, sending a WUS, which may be a random access preamble.

[0709] The random access preamble (preamble) may be a random access preamble (preamble) reserved by the system. The sending of the random access preamble (preamble) indicates a request for SIB1 or SIB and OSI.

[0710] Option b: The terminal triggers the SIB1 request process to the current cell

[0711] For example, RRCSystemInfoReq terminal st is sent to the current cell, and the signaling includes indication information requesting SIB1.

[0712] The subsequent processing is as follows:

[0713] Option a-1: The terminal monitors the SI-RNTI in the target cell to receive SIB1. If SIB1 is not received according to the SIB1 transmission period, the terminal continues to increase power and transmit WUS until SIB1 is received, the terminal's maximum uplink transmit power is reached, the cell's maximum uplink transmit power is reached, or the maximum number of random access preamble transmissions is reached. The terminal then notifies higher layers of the SIB1 request failure.

[0714] Option a-2: If the terminal receives the RAPID header of the random access preamble it transmitted, the random access is considered successful. Otherwise, the terminal continues to increase the power to send the random access preamble. If successful, the terminal notifies the upper layer of the receipt of the SI request confirmation.

[0715] Option b-1: The terminal monitors the SI-RNTI in the target cell to receive SIB1.

[0716] Before steps 1 and 2, the terminal receives a system broadcast in the current cell, which includes configuration information about neighboring cells, such as at least one of: configuration information for sending UL WUS, cell common configuration, SIB broadcast status indication information, etc. The configuration is associated with a neighboring cell ID (such as PCI and frequency).

[0717] Before steps 1, 2, and 3, the current cell and the neighboring cell exchange indication information about the cell SIB1 broadcast status.

[0718] Before initiating a UL WUS request for SIB1, the terminal first confirms the broadcast status of the target cell SIB1. If there is no broadcast, then request SIB1. Furthermore, the terminal can obtain the SIB1 broadcast status indication (i.e., whether it is in the broadcast state) based on the reception of the target cell MIB.

[0719] The MIB indicates the SIB1 broadcast status. For CD-SSB or SSB sent on the synchronization grid,

[0720] Option 1: The ssb-SubcarrierOffset in the MIB may be used to indicate that RMSI is not included and SIB1 may be requested.

[0721] For example, ssb-SubcarrierOffset=30 (FR1) or ssb-SubcarrierOffset=14 (FR2).

[0722] Option 2: The spare bit in the MIB can also indicate that SIB1 is not available but can be requested.

[0723] Option 3: A separate CRC is specified for the MIB. This CRC is different from the traditional CRC and is used to indicate that SIB1 is not available but can be requested. This new CRC can be calculated based on the original CRC, for example, the new CRC is equal to the original CRC + 1.

[0724] Option 4: Define at least two CRC masks, one of which indicates that SIB1 is not present but can be requested. Another CRC mask indicates that no SIB1 is sent. A third CRC mask can also be defined to indicate that SIB1 is sent.

[0725] Option 5: The MIB carries an indication information to indicate that there is no SIB to be requested, or there is no SIB, or there is a SIB, etc.

[0726] Solution 4: Triggering the terminal to request SIB1 based on recovery from a coverage hole.

[0727] The following factors or events may also trigger the terminal to initiate the SIB1 request process:

[0728] The terminal recovers from the coverage breach;

[0729] Receive system broadcast change indication;

[0730] A system broadcast change indication (systemInfoModification) or a common warning notification indication (etwsAndCmasIndication) is received from a paging DCI (paging DCI).

[0731] Requests based on high-level positioning;

[0732] 3 hours have passed since the last valid SIB1 was stored.

[0733] At the same time, in order to support the above-mentioned SIB1 request process for the current serving cell, the current serving cell also needs to configure configuration information for requesting SIB1 in the system broadcast configuration, such as a UL WUS-specific random access preamble.

[0734] The embodiment of the present invention provides a process of requesting SIB1 in RRC idle state / RRC inactive state (RRC-IDLE / INACTIVE), so that the network side does not need to send SIB1 periodically, thereby further obtaining network energy saving gain.

[0735] In the embodiments of the present disclosure, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations of other embodiments.

[0736] In the embodiments of the present disclosure, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations of other embodiments.

[0737] The embodiments of the present disclosure also provide an apparatus for implementing any of the above methods. For example, an apparatus is provided, comprising units or modules for implementing each step performed by a terminal in any of the above methods. For another example, another apparatus is provided, comprising units or modules for implementing each step performed by a network device (e.g., an access network device or a core network device) in any of the above methods.

[0738] It should be understood that the division of the various units or modules in the above devices is merely a division of logical functions. In actual implementation, they may be fully or partially integrated into a physical entity, or they may be physically separated. In addition, the units or modules in the device may be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and the memory stores instructions. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the various units or modules of the above devices, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits, and the functions of some or all of the units or modules can be realized by designing the hardware circuits. The above-mentioned hardware circuits can be understood as one or more processors; for example, in one implementation, the above-mentioned hardware circuit is an application-specific integrated circuit (ASIC), which realizes the functions of some or all of the above units or modules by designing the logical relationship of the components in the circuit; for example, in another implementation, the above-mentioned hardware circuit can be realized by a programmable logic device (PLD). Taking a field programmable gate array (FPGA) as an example, it can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by configuring the configuration file, thereby realizing the functions of some or all of the above units or modules. All units or modules of the above devices can be realized in the form of software called by the processor, or in the form of hardware circuits, or in part by the form of software called by the processor, and the rest by hardware circuits.

[0739] In the embodiments of the present disclosure, a processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction reading and execution capabilities, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationship of a hardware circuit. The logical relationship of the above-mentioned hardware circuit is fixed or reconfigurable. For example, the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document to implement the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), etc.

[0740] As shown in FIG7A , an embodiment of the present disclosure provides a terminal, wherein the terminal includes:

[0741] The processing module 5101 is configured to determine a method for acquiring the SIB of the first cell according to whether the first cell periodically sends the SIB.

[0742] In some embodiments, the terminal may further include: a sending module and / or a receiving module.

[0743] In some embodiments, the sending module and / or the receiving module may correspond to a network interface and / or a transceiver antenna of the terminal.

[0744] In some embodiments, the processing module may be used by the terminal to execute steps related to information processing in any SIB request method.

[0745] In some embodiments, the sending module may be used by the terminal to execute steps related to information sending in any SIB request method.

[0746] In some embodiments, the receiving module may be used by the terminal to execute steps related to information sending in any SIB request method.

[0747] In some embodiments, the processing module is configured to meet the first condition and determine a method for obtaining the SIB of the first cell according to whether the first cell periodically sends the SIB;

[0748] The first condition includes at least one of the following:

[0749] The terminal has a cell reselection requirement;

[0750] The terminal recovers from the coverage hole;

[0751] The terminal receives a system broadcast change indication of the first cell;

[0752] The terminal has a positioning requirement;

[0753] Downlink control information (DCI) of the first cell indicates system information;

[0754] The validity period of the SIB of the first cell stored by the terminal expires.

[0755] In some embodiments, the processing module is configured to perform at least one of the following:

[0756] The terminal has a demand for cell reselection and the first cell aperiodically sends an SIB. The terminal has a demand for cell reselection and the first cell aperiodically sends an SIB, and determines to send a first request to the first cell requesting the SIB of the first cell;

[0757] The terminal has a demand for cell reselection and the first cell aperiodically sends an SIB. The terminal determines to send a second request to the second cell requesting the SIB of the first cell.

[0758] In some embodiments, the processing module is configured to perform at least one of the following:

[0759] The terminal has a demand for cell reselection and the first cell aperiodically sends an SIB. The terminal has a demand for cell reselection and the first cell aperiodically sends an SIB, and determines to send a first request to the first cell requesting the SIB of the first cell before reselecting to the first cell;

[0760] The terminal has a cell reselection requirement and the first cell aperiodically sends an SIB. The terminal determines to send a first request to the first cell requesting the SIB of the first cell after reselecting to the first cell.

[0761] In some embodiments, the processing module is configured to perform at least one of the following:

[0762] The terminal has a cell reselection requirement and the first cell aperiodically sends an SIB. The terminal determines to send a random access request to the first cell; the random access request includes: a first random access preamble code indicating the requested SIB.

[0763] In some embodiments, the receiving module is configured to receive a random access response sent by the first network device of the first cell;

[0764] The processing module is configured to determine whether the first network device receives the first request according to the random access response.

[0765] In some embodiments, the sending module is configured to, after sending the first request, monitor the requested SIB on the first cell according to the configuration of periodically sending the SIB;

[0766] The processing module is configured to determine whether the first network device receives the first request according to whether the requested SIB is monitored.

[0767] In some embodiments, the processing module is configured to, in response to determining that the first network device has not received the first request, determine to increase the transmit power of the random access request and continue to send the random access request.

[0768] In some embodiments, the processing module is configured to determine to stop sending the random access request when the transmission power of the random access request reaches a maximum transmission power and / or when the number of transmissions of the first random access preamble reaches a maximum number of transmissions.

[0769] FIG7B is a diagram of a first network device provided in an embodiment of the present disclosure, wherein the method includes:

[0770] The receiving module 5201 is configured to receive a first request sent by a terminal; the first request is used by the terminal to request a system information block SIB of a first cell;

[0771] The sending module 5202 is configured to send the SIB requested by the terminal according to the first request.

[0772] In some embodiments, the network device may further include a processing module.

[0773] In some embodiments, the sending module and / or the receiving module may correspond to a network interface and / or a transceiver antenna of the first network device.

[0774] In some embodiments, the processing module may be configured to execute any steps related to information processing in the SIB request method executed by the first network device.

[0775] In some embodiments, the first request comprises: a random access request;

[0776] The random access request includes a first random access preamble indicating a requested SIB.

[0777] In some embodiments, the sending module is configured to send a request response to the terminal; the request response is used by the terminal to determine whether the first network device has received the first request.

[0778] In some embodiments, the request response includes: a random access response;

[0779] The random access response is used to indicate to the terminal that the first network device has determined that the random access request requesting the SIB has been received.

[0780] In some embodiments, the first request is a request sent by the terminal before the terminal reselects to the first cell; or, the first request is a request sent by the terminal after the terminal reselects to the first cell.

[0781] In some embodiments, the processing module is configured to perform at least one of the following:

[0782] Determining a verification method for the MIB according to whether the first cell periodically sends the SIB;

[0783] determining, according to whether the first cell periodically sends the SIB, whether the MIB includes the first bit;

[0784] The indication content of the second bit included in the MIB is determined according to whether the first cell periodically sends the SIB.

[0785] In some embodiments, the processing module is configured to perform at least one of the following:

[0786] Determining a verification algorithm for the MIB according to whether the first cell periodically sends the SIB;

[0787] The check mask of the MIB is determined according to whether the first cell periodically sends the SIB.

[0788] As shown in FIG7C , an embodiment of the present disclosure provides a second network device, comprising:

[0789] The sending module 5301 is configured to send the cell configuration of the first cell to the terminal; the cell configuration is at least used by the terminal to determine whether the first cell periodically sends the SIB.

[0790] In some embodiments, the cell configuration includes at least one of the following:

[0791] First information, indicating whether the first cell periodically sends the SIB;

[0792] Second information, indicating whether the first cell sends the SIB based on an on-demand mechanism;

[0793] The third information is used by the terminal to send a first request to the first cell, and / or the third information is used by the terminal to send a second request to the second cell; the first request and / or the second request are used by the terminal to request SIB from the first cell.

[0794] As shown in FIG7D , an embodiment of the present disclosure provides a second network device, comprising:

[0795] The receiving module 5401 is configured to receive a second request sent by the terminal when there is a cell reselection requirement; the second request is used by the terminal to request the first cell to send a system information block SIB.

[0796] In some embodiments, the second network device may further include: a sending module and / or a receiving module.

[0797] In some embodiments, the sending module and / or the receiving module may correspond to a network interface and / or a transceiver antenna of the second network device.

[0798] In some embodiments, the processing module may be used for the second network device to execute steps related to information processing in any SIB request method.

[0799] In some embodiments, the sending module is configured to send the second request to the first network device of the first cell.

[0800] An embodiment of the present disclosure further provides a communication device, which may include: one or more processors; wherein the processor is used to call instructions to enable the communication device to execute the information system block SIB request method that can be implemented in any of the aforementioned embodiments.

[0801] 8A and / or 8B , the communication device 8100 further includes one or more memories 8102 for storing instructions. Alternatively, all or part of the memories 8102 may be located outside the communication device 8100.

[0802] The communication device may be the aforementioned terminal and network device. In some embodiments, the network device may be a master node and / or an auxiliary node.

[0803] In some embodiments, the communication device 8100 further includes one or more transceivers 8103. When the communication device 8100 includes one or more transceivers 8103, the communication steps such as sending and receiving in the above method are performed by the transceiver 8103, and the other steps are performed by the processor 8101.

[0804] In some embodiments, a transceiver may include a receiver and a transmitter, which may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, and transceiver circuit may be used interchangeably; the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be used interchangeably; and the terms receiver, receiving unit, receiver, and receiving circuit may be used interchangeably.

[0805] Optionally, the communication device 8100 further includes one or more interface circuits 8104, which are connected to the memory 8102. The interface circuits 8104 can be used to receive signals from the memory 8102 or other devices, and can be used to send signals to the memory 8102 or other devices. For example, the interface circuits 8104 can read instructions stored in the memory 8102 and send the instructions to the processor 8101.

[0806] The communication device 8100 described in the above embodiment may be a network device or a terminal, but the scope of the communication device 8100 described in the present disclosure is not limited thereto, and the structure of the communication device 8100 may not be limited by FIG. 8A. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: (1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data or programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0807] FIG8B is a schematic diagram of the structure of a chip 8200 provided in an embodiment of the present disclosure. If the communication device 8100 can be a chip or a chip system, please refer to the schematic diagram of the structure of the chip 8200 shown in FIG8B , but the present disclosure is not limited thereto.

[0808] The chip 8200 includes one or more processors 8201, and the processor 8201 is used to call instructions to enable the chip 8200 to execute any of the above information system block SIB request methods.

[0809] In some embodiments, chip 8200 further includes one or more interface circuits 8202, which are connected to memory 8203. Interface circuit 8202 can be used to receive signals from memory 8203 or other devices, and can be used to send signals to memory 8203 or other devices. For example, interface circuit 8202 can read instructions stored in memory 8203 and send the instructions to processor 8201. Optionally, the terms interface circuit, interface, transceiver pin, and transceiver are interchangeable.

[0810] In some embodiments, the chip 8200 further includes one or more memories 8203 for storing instructions. Alternatively, all or part of the memories 8203 may be outside the chip 8200.

[0811] The present disclosure also provides a storage medium having instructions stored thereon, which, when executed on the communication device 8100, causes the communication device 8100 to execute any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but may also be a transient storage medium.

[0812] The present disclosure further provides a program product, which, when executed by the communication device 8100, enables the communication device 8100 to execute any of the above-mentioned methods for requesting a system information block (SIB). Optionally, the program product is a computer program product.

[0813] The present disclosure also provides a computer program, which, when executed on a computer, enables the computer to execute any one of the above methods for requesting a system information block (SIB).

[0814] Other embodiments of the presently disclosed embodiments will readily occur to those skilled in the art after considering the specification and practicing the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the presently disclosed embodiments that follow the general principles of the presently disclosed embodiments and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered as exemplary only, with the true scope and spirit of the presently disclosed embodiments being indicated by the following claims.

[0815] It should be understood that the embodiments of the present disclosure are not limited to the precise structures described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the embodiments of the present disclosure is limited only by the appended claims.

Claims

1. A method for requesting system information SIB, wherein, Executed by a terminal, the method includes: Determine a way to obtain the system information block (SIB) of the first cell according to whether the first cell periodically sends the SIB.

2. The method according to claim 1, wherein, The determining a way to obtain the SIB of the first cell according to whether the first cell periodically sends the SIB includes: meeting a first condition, and determining a way to obtain the SIB of the first cell according to whether the first cell periodically sends the SIB; The first condition includes at least one of the following: The terminal has a need for cell reselection; The terminal recovers from a coverage hole; The terminal receives a system broadcast change indication of the first cell; The terminal has a positioning requirement; The paging downlink control information (DCI) of the first cell indicates system information; The validity period of the SIB of the first cell stored by the terminal has expired.

3. The method according to claim 1 or 2, wherein The determining a way to obtain the SIB of the first cell according to whether the first cell periodically sends the SIB includes at least one of the following: When the terminal has a need for cell reselection and the first cell sends the SIB non-periodically, determine to send a first request to the first cell, where the first request is used to request the SIB of the first cell; When the terminal has a need for cell reselection and the first cell sends the SIB non-periodically, determine to send a second request to a second cell; the second request is used to request the SIB of the first cell.

4. The method according to claim 3, wherein, When the terminal has a need for cell reselection and the first cell sends the SIB non-periodically, sending a first request to the first cell to request the SIB of the first cell includes at least one of the following: When the terminal has a need for cell reselection and the first cell sends the SIB non-periodically, determine to send the first request to the first cell before reselection to the first cell; When the terminal has a need for cell reselection and the first cell sends the SIB non-periodically, determine to send the first request to the first cell after reselection to the first cell.

5. The method according to claim 3 or 4, wherein When the terminal has a need for cell reselection and the first cell sends the SIB non-periodically, determining to send a first request to the first cell to request the SIB of the first cell includes: When the terminal has a need for cell reselection and the first cell sends the SIB non-periodically, determine to send a random access request to the first cell; the random access request includes: a first random access preamble indicating a request for the SIB.

6. The method according to claim 5, wherein, The method further includes: Receive a random access response sent by a first network device of the first cell; Determine whether the first network device has received the first request according to the random access response.

7. The method according to claim 5, wherein The method further includes: Monitor the requested SIB on the first cell according to the configuration of periodically sending the SIB; Determine whether the first network device has received the first request according to whether the requested SIB is monitored.

8. The method according to any one of claims 5 to 7, wherein The method further includes: In response to determining that the first network device has not received the first request, determine to increase the transmission power of the random access request and continue to send the random access request.

9. The method according to claim 10, wherein, The method further includes: Determine to stop continuously sending the random access request when the transmission power of the random access request reaches the maximum transmission power and / or when the transmission times of the first random access preamble reach the maximum transmission times.

10. The method according to claim 3, wherein, The first request and / or the second request includes at least one of the following: The cell identifier of the first cell; The identification information of the SIB requested.

11. The method according to any one of claims 1 to 10, wherein, The method further includes at least one of the following: Determine whether the first cell periodically sends the SIB according to the master information block MIB of the first cell; Determine whether the first cell periodically sends the SIB according to the cell configuration of the first cell sent by the second cell.

12. The method according to claim 11, wherein, The determining whether the first cell periodically sends the SIB according to the master information block MIB of the first cell includes at least one of the following: Determine whether the first cell periodically sends the SIB according to whether the MIB of the first cell contains a first bit; Determine whether the first cell periodically sends the SIB according to the check mode used by the MIB of the first cell; Determine whether the first cell periodically sends the SIB according to the indication content of the second bit in the MIB of the first cell.

13. The method according to claim 12, wherein The determining whether the first cell periodically sends the SIB according to the check mode used by the MIB of the first cell includes at least one of the following: Determine whether the first cell periodically sends the SIB according to the check algorithm used by the MIB of the first cell; Determine whether the first cell periodically sends the SIB according to the check mask used by the MIB of the first cell.

14. The method according to claim 11, wherein The cell configuration includes at least one of the following: The first information, indicating whether the first cell periodically sends the SIB; The second information, indicating whether the first cell sends the SIB based on a demand mechanism; The third information, where the third information is used for the terminal to send the first request to the first cell, and / or, the third information is used for the terminal to send the second request to the second cell; the first request and / or the second request is used for the terminal to request the SIB from the first cell.

15. A method for requesting system information SIB, wherein, Executed by a first network device of a first cell, the method includes: Receive a first request sent by a terminal; the first request is used for the terminal to request the system information block SIB of the first cell; Send the SIB requested by the terminal according to the first request.

16. The method according to claim 15, wherein, The first request includes: a random access request; The random access request includes: a first random access preamble indicating a requested SIB.

17. The method according to claim 16, wherein, The method further includes: Send a request response to the terminal; the request response is used for the terminal to determine whether the first network device has received the first request.

18. The method according to claim 17, wherein The request response includes: a random access response; The random access response is used to indicate to the terminal that the first network device determines to have received the random access request for the requested SIB.

19. The method according to any one of claims 15 to 18, wherein The first request is a request sent by the terminal before cell reselection to the first cell; or, the first request is a request sent by the terminal after cell reselection to the first cell.

20. The method according to any one of claims 15 to 19, wherein The method further includes: Determine the verification method of the MIB according to whether the first cell periodically sends the SIB; Determine whether the MIB contains a first bit according to whether the first cell periodically sends the SIB; Determine the indication content of the second bit included in the MIB according to whether the first cell periodically sends the SIB.

21. The method according to claim 20, wherein The determining the verification method of the MIB according to whether the first cell periodically sends the SIB includes at least one of the following: Determine the verification algorithm of the MIB according to whether the first cell periodically sends the SIB; Determine the verification mask of the MIB according to whether the first cell periodically sends the SIB.

22. A method for requesting system information SIB, wherein, Executed by a second network device of a second cell, the method includes: Receive a second request sent by a terminal when the terminal has a cell reselection requirement; the second request is used for the terminal to request the first cell to send a system information block SIB.

23. The method according to claim 22, wherein, The method further includes: Send the second request to a first network device of the first cell.

24. A method for requesting system information SIB, wherein, Executed by a second network device of a second cell, the method includes: Send the cell configuration of the first cell to the terminal; the cell configuration is at least used for the terminal to determine whether the first cell periodically sends the SIB.

25. The method according to claim 24, wherein, The cell configuration includes at least one of the following: First information indicating whether the first cell periodically sends the SIB; Second information indicating whether the first cell sends the SIB based on an on-demand mechanism; Third information, the third information is used for the terminal to send a first request to the first cell, and / or, the third information is used for the terminal to send the second request to the second cell; the first request and / or the second request are used for the terminal to request the SIB from the first cell.

26. A terminal, wherein, Includes: A processing module configured to determine a method for obtaining the SIB of the first cell according to whether the first cell periodically sends the SIB.

27. Executed by a first network device, the method includes: A receiving module configured to receive a first request sent by a terminal; The first request is used for the terminal to request the system information block SIB of the first cell; A sending module configured to send the SIB requested by the terminal according to the first request.

28. A second network device, wherein, Includes: A receiving module configured to receive a second request sent by a terminal when the terminal has a cell reselection requirement; The second request is used for the terminal to request the first cell to send a system information block SIB.

29. A second network device, wherein, Includes: A sending module configured to send the cell configuration of the first cell to the terminal; The cell configuration is at least used for the terminal to determine whether the first cell periodically sends the SIB.

30. A communication device, wherein, The communication device includes: One or more processors; Wherein, the processor is used to call instructions to cause the communication device to execute the method for requesting the information system block SIB according to any one of claims 1 to 14, 15 to 21, 22 to 23 and / or claims 24 to 25.

31. A storage medium, wherein, The storage medium stores instructions that, when run on a communication device, cause the communication device to execute the method for requesting the information system block SIB according to any one of claims 1 to 14, 15 to 21, 22 to 23, and / or claims 24 to 25.

Images