Support information transmission and reception method and device, communication device and storage medium

Abstract

[Solution] The present disclosure relates to an assistance information transmitting and receiving method and device, a communication device and a storage medium, the assistance information transmitting method including a step of transmitting first assistance information to a second UE, the first assistance information being used to indicate to the second UE first system information required by the first UE. According to the present disclosure, the first UE can indicate to the second UE by the first assistance information to inform the second UE of the system information required by the first UE, so that the second UE can timely transmit the updated first system information to the first UE when it is later determined that the first system information has been updated, so that the first UE can timely obtain the updated first system information from the second UE even if the first UE does not know that the base station has updated the first system information.

Description

[Technical Field]

[0001] The present disclosure relates to the field of communication technologies, and more particularly to an assistance information transmitting method, an assistance information receiving method, an assistance information transmitting device, an assistance information receiving device, a communication device, and a computer-readable storage medium. [Background technology]

[0002] In order to support direct communication between terminals, a sidelink communication method has been introduced, and terminals can communicate directly based on the sidelink.

[0003] Based on the communication between terminals, terminal A can establish a sidelink link with terminal B instead of directly establishing a communication connection with the base station, and realize communication with the base station through the relay of terminal B. Here, if terminal A and terminal B are user equipment (UE), terminal A can be called a remote UE, and terminal B can be called a relay UE.

[0004] When a remote UE needs to obtain required system information, it can send a system information request to the relay UE, and the relay UE obtains the system information that the remote UE is interested in and sends it to the remote UE. However, when the system information required by the remote UE is updated on the network side, the remote UE does not know that the system information has been updated on the network side and therefore does not send a system information request to the relay UE. Therefore, even if the relay UE obtains the updated system information on the network side, it cannot timely transmit the updated system information required by the remote UE to the remote UE. Summary of the Invention [Problem to be solved by the invention]

[0005] In view of this, to solve the problems in the related art, embodiments of the present disclosure provide a support information transmitting method, a support information receiving method, a support information transmitting device, a support information receiving device, a communication device, and a computer-readable storage medium. [Means for solving the problem]

[0006] According to a first aspect of an embodiment of the present disclosure, there is provided an assistance information transmission method applied to a first user equipment (UE), the method including a step of transmitting first assistance information to a second user equipment (UE), the first assistance information being used to indicate to the second UE first system information required by the first UE.

[0007] According to a second aspect of an embodiment of the present disclosure, there is provided an assistance information reception method applied to a second UE, the method including: receiving first assistance information transmitted from a first UE; and determining first system information required for the first UE based on the first assistance information.

[0008] According to a third aspect of an embodiment of the present disclosure, there is provided an assistance information receiving method applicable to a network side device, the method including: receiving second assistance information transmitted from a second UE; and determining first system information required for a first UE based on the second assistance information.

[0009] According to a fourth aspect of an embodiment of the present disclosure, there is provided an assistance information transmitting device including one or more processors, wherein the processors are configured to transmit first assistance information to a second UE, the first assistance information being used to indicate to the second UE first system information required by the first UE.

[0010] According to a fifth aspect of an embodiment of the present disclosure, there is provided an assistance information receiving device including one or more processors, wherein the processors are configured to receive first assistance information transmitted from a first UE and determine first system information required for the first UE based on the first assistance information.

[0011] According to a sixth aspect of an embodiment of the present disclosure, there is provided an assistance information receiving device including one or more processors, wherein the processors are configured to receive second assistance information transmitted from a second UE and determine first system information required for a first UE based on the second assistance information.

[0012] According to a seventh aspect of an embodiment of the present disclosure, there is provided a communication device, the communication device including a processor and a memory for storing a computer program, wherein when the computer program is executed by the processor, the above-mentioned assistance information transmission method and / or the above-mentioned assistance information reception method applied to the second UE is realized.

[0013] According to an eighth aspect of an embodiment of the present disclosure, there is provided a communication device, the communication device including a processor and a memory for storing a computer program, wherein when the computer program is executed by the processor, the assistance information receiving method applicable to the above-mentioned network side device is realized.

[0014] According to a ninth aspect of an embodiment of the present disclosure, there is provided a computer-readable storage medium for storing a computer program, which, when executed by a processor, realizes steps of the above-mentioned assistance information transmission method and / or the above-mentioned assistance information reception method applied to the second UE.

[0015] According to a tenth aspect of an embodiment of the present disclosure, there is provided a computer-readable storage medium for storing a computer program, which, when executed by a processor, realizes steps of the assistance information receiving method applied to the above-mentioned network side device. [Effects of the Invention]

[0016] According to an embodiment of the present disclosure, a first UE may instruct a second UE by first assistance information to inform the second UE of system information required by the first UE, so that when the second UE later determines that the first system information has been updated, the second UE may timely transmit the updated first system information to the first UE, so that the first UE may timely obtain the updated first system information from the second UE even if the first UE does not know that the base station has updated the first system information. [Brief explanation of the drawings]

[0017] In order to more clearly explain the technical solutions of the embodiments of the present disclosure, the drawings used in the description of the embodiments will be briefly described below. However, the drawings in the following description are only some embodiments of the present disclosure, and it is obvious that a person skilled in the art can derive other drawings from these drawings without exerting any creative effort. [Figure 1] 1 is a schematic flowchart of an assistance information transmission method according to an embodiment of the present disclosure; [Figure 2] 1 is a schematic flowchart of another assistance information transmission method illustrated by an embodiment of the present disclosure. [Figure 3] 10 is a schematic flowchart of yet another assistance information transmission method illustrated by an embodiment of the present disclosure. [Figure 4] 1 is a schematic flowchart of a method for receiving assistance information according to an embodiment of the present disclosure; [Figure 5] 1 is a schematic flowchart of another assistance information receiving method according to an embodiment of the present disclosure; [Figure 6]10 is a schematic flowchart of yet another method for receiving assistance information according to an embodiment of the present disclosure; [Figure 7] 10 is a schematic flowchart of yet another method for receiving assistance information according to an embodiment of the present disclosure; [Figure 8] 10 is a schematic flowchart of yet another method for receiving assistance information according to an embodiment of the present disclosure; [Figure 9] 10 is a schematic flowchart of yet another method for receiving assistance information according to an embodiment of the present disclosure; [Figure 10] 1 is a schematic flowchart of a method for receiving assistance information according to an embodiment of the present disclosure; [Figure 11] 1 is a schematic flowchart of another assistance information receiving method according to an embodiment of the present disclosure; [Figure 12] 10 is a schematic flowchart of yet another method for receiving assistance information according to an embodiment of the present disclosure; [Figure 13] FIG. 1 is a schematic block diagram of an apparatus for receiving assistance information according to an embodiment of the present disclosure. [Figure 14] 1 is a schematic block diagram of an apparatus for transmitting and receiving assistance information according to an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0018] Hereinafter, the technical aspects of the embodiments of the present disclosure will be clearly and completely described in conjunction with the drawings in the embodiments of the present disclosure, but obviously, the described embodiments are only some embodiments of the present disclosure, and are not all embodiments. Based on the embodiments in the present disclosure, all other embodiments that a person skilled in the art can obtain without creative labor fall within the scope of protection of the present disclosure.

[0019] The terms used in the embodiments of the present disclosure are only for the purpose of describing particular embodiments and are not intended to limit the embodiments of the present disclosure. As used in the embodiments of the present disclosure and in the appended claims, the singular forms "a," "an," and "the" are also intended to include the plural form unless the context clearly indicates otherwise. The term "and / or," as used herein, should also be understood to mean and include any and all possible combinations of one or more of the associated listed items.

[0020] In embodiments of the present disclosure, terms such as first, second, and third may be used to describe various pieces of information, but it should be understood that these pieces of information should not be limited to these terms. These terms are used only to distinguish between the same types of information. For example, first system information may be referred to as second system information, and similarly, second system information may be referred to as first system information, without departing from the scope of embodiments of the present disclosure. Depending on the context, the word "if" as used herein may be interpreted as "when," "in the case of," or "in response to a determination."

[0021] For purposes of brevity and clarity, the terms used herein to characterize magnitude relationships are "greater than" or "smaller," "higher" or "lower." However, to those skilled in the art, the term "greater" also includes the meaning of "greater than or equal to," the term "smaller" also includes the meaning of "less than or equal to," the term "higher" includes the meaning of "more than or equal to," and the term "lower" includes the meaning of "less than or equal to."

[0022] 1 is a schematic flowchart of a method for transmitting assistance information according to an embodiment of the present disclosure. The method according to this embodiment can be applied to a first User Equipment (UE), which can communicate with a second UE, for example, via a sidelink link, and the interface between the first UE and the second UE can be a PC-5 interface. The first UE and the second UE can include, but are not limited to, communication devices such as mobile phones, tablets, wearable devices, sensors, and Internet of Things devices.

[0023] In one embodiment, when performing the steps of the method, the first UE may be in a connected state or a non-connected state, such as an idle state or an inactive state, and can be set as needed.

[0024] In some embodiments of the present disclosure, the first UE may be a remote UE and the second UE may be a relay UE, i.e., there is a communication connection between the second UE and the base station, and there is no communication connection between the first UE and the base station.

[0025] Note that this does not mean that the first UE is always in a disconnected state and the second UE is always in a connected state. For example, in the embodiment shown in Figure 1, the first UE can communicate with the second UE when in a connected state, and can also communicate with the second UE when in a disconnected state. Hereinafter, examples of the present disclosure will be mainly illustrated when the first UE is a remote UE and the second UE is a relay UE.

[0026] In one embodiment, the base station includes, but is not limited to, a base station in a communication system, such as a 4G base station, a 5G base station, or a 6G base station.

[0027] As shown in FIG. 1, the assistance information transmission method includes the following steps:

[0028] In step S101, first assistance information is sent to a second user equipment (UE), and the first assistance information is used to indicate to the second UE first system information required by the first UE.

[0029] In one embodiment, the first UE can determine the system information (SI) it requires, which may include a master system information block (MIB) or a system information block (SIB), such as SIB1 or another SIB.

[0030] The system information required by the first UE may be system information that the first UE currently needs to use (also referred to as required SI), or may be system information that the first UE predicts should be used.

[0031] In turn, the first UE may transmit the first assistance information to the second UE, and the first assistance information may indicate to the second UE the first system information required by the first UE.

[0032] In one embodiment, the first assistance information includes an interest identifier corresponding to the first system information. For example, the required system information can be indicated by an interest identifier, and the interest identifier may be, for example, an SIB identifier, a system information identifier, or an identifier having a correspondence relationship with other system information. The first assistance information may carry the interest identifier corresponding to the first system information, and the interest identifier and the system information may have a one-to-one relationship, i.e., one interest identifier bit corresponds to one type of system information, or a one-to-many relationship, i.e., one interest identifier bit corresponds to multiple types of system information.

[0033] The second UE and the first UE may store an association relationship between an interest identifier and system information, and after receiving the first assistance information, the second UE may determine corresponding system information from the association relationship as first system information required by the first UE based on the interest identifier contained therein, and record and store the type of the first system information required by the first UE. Thus, when the second UE determines that the first system information has been updated, the second UE may obtain the updated first system information and send the updated first system information to the first UE, and the first UE may timely obtain the updated first system information from the second UE even if it does not know that the base station has updated the first system information.

[0034] According to an embodiment of the present disclosure, a first UE may instruct a second UE by first assistance information to inform the second UE of system information required by the first UE, so that when the second UE later determines that the first system information has been updated, the second UE may timely transmit the updated first system information to the first UE, so that the first UE may timely obtain the updated first system information from the second UE even if the first UE does not know that the base station has updated the first system information.

[0035] In addition, when the second UE, as a relay UE, communicates with the first UE, as a remote UE, via a sidelink, the communication method includes at least one of unicast, multicast, and broadcast.

[0036] For example, the second UE may send updated first system information to the first UE in a unicast manner, and broadcast SIB1 received from the base station in a broadcast manner, so that the first UE can determine whether the first system information currently stored in itself is up to date based on the SIB1 broadcast by the second UE, and if not, can send a system information request to the second UE to request the second UE to send the latest first system information to the first UE.

[0037] In this manner, the first UE can still obtain the latest first system information from the second UE, but in this process, the first UE first needs to determine whether to update the first system information based on the SIB1 broadcast by the second UE, and then send a system information request to the second UE if an update is required. According to the embodiment shown in FIG. 1, the first UE can obtain the latest first system information from the second UE while performing these steps, thereby ensuring that the first UE obtains the latest first system information as quickly as possible.

[0038] 2 is a schematic flowchart of another assistance information transmitting method according to an embodiment of the present disclosure. As shown in FIG. 2, transmitting first assistance information to a second UE includes the following steps:

[0039] In step S201, after selecting or reselecting the second UE as a relay UE, in response to the first assistance information not being transmitted to the second UE, transmit the first assistance information to the second UE.

[0040] In one embodiment, after the first UE transmits the first assistance information to any UE, it records the identifier of the UE. After selecting or reselecting the second UE as a relay UE, it determines whether the first assistance information has been transmitted to the second UE based on the recorded identifier. If the first assistance information has not been transmitted to the second UE, it transmits the first assistance information to the second UE. If the first assistance information has been transmitted to the second UE, there is no need to transmit the first assistance information to the second UE, which is advantageous in avoiding wasting communication resources.

[0041] 3 is a schematic flowchart of another method for transmitting assistance information according to an embodiment of the present disclosure. As shown in FIG. 3, transmitting first assistance information to the second UE includes the following steps:

[0042] In step S301, in response to a change in the type of required first system information, first assistance information is transmitted to a second UE.

[0043] In one embodiment, the type of the first system information required by the first UE may change as needed, for example, if the type of the first system information is SIB2 and then changes to SIB3 as needed, the type of the first system information has changed. In this case, first assistance information may be transmitted to the second UE, and the second UE may determine the changed type of the first system information required by the first UE based on the first assistance information, for example, if it is determined to be SIB3, and then if SIB3 is updated, obtain the updated SIB3 and transmit the updated SIB3 to the first UE.

[0044] In one embodiment, the first assistance information further includes a request identifier, and the request identifier is used to instruct the second UE to send the latest version of system information corresponding to the request identifier to the first UE.

[0045] The first UE can also determine the system information that currently needs to be acquired. For example, if it is determined based on SIB1 broadcasted by the second UE that the versions of some currently stored system information are not the latest, the system information whose versions are not the latest can be the system information that needs to be acquired, and thus a request identifier can be added to the first assistance information and sent to the second UE.

[0046] Here, the system information that the first UE requests to acquire can be indicated by a request identifier, and the first support information may include the request identifier, and the request identifier and the system information may have a one-to-one relationship, i.e., one request identifier bit corresponds to one type of system information, or a one-to-many relationship, i.e., one request identifier bit corresponds to multiple types of system information.

[0047] The second UE can transmit the latest version of the system information corresponding to the request identifier to the first UE. For example, if the second UE currently stores the latest version of the system information corresponding to the request identifier, it can directly transmit the stored latest version of the system information corresponding to the request identifier to the first UE. For example, if the second UE does not currently store the latest version of the system information corresponding to the request identifier, it can obtain the latest version of the system information corresponding to the request identifier from the base station and transmit it to the first UE, and then transmit the obtained system information to the first UE.

[0048] 4 is a schematic flowchart of a method for receiving assistance information according to an embodiment of the present disclosure. The method according to this embodiment can be applied to a second UE, which can communicate with a first UE, for example, via a sidelink link, and the interface between the first UE and the second UE can be a PC-5 interface. The first UE and the second UE can be, but are not limited to, communication devices such as mobile phones, tablets, wearable devices, sensors, and Internet of Things devices.

[0049] In one embodiment, when communicating with the second UE, the first UE may be in a connected state or a non-connected state, such as an idle state or an inactive state, and can be configured as needed.

[0050] In some embodiments of the present disclosure, the first UE may be a remote UE and the second UE may be a relay UE, i.e., there is a communication connection between the second UE and the base station, and there is no communication connection between the first UE and the base station.

[0051] Note that this does not mean that the first UE is always in a disconnected state and the second UE is always in a connected state. For example, in the embodiment shown in Figure 4, the first UE can communicate with the second UE when in a connected state, and can also communicate with the second UE when in a disconnected state. Hereinafter, examples of the present disclosure will be mainly illustrated when the first UE is a remote UE and the second UE is a relay UE.

[0052] In one embodiment, the base station includes, but is not limited to, a base station in a communication system, such as a 4G base station, a 5G base station, or a 6G base station.

[0053] As shown in FIG. 4, the assistance information transmission method includes the following steps:

[0054] In step S401, first assistance information transmitted from a first UE is received.

[0055] In step S402, determine first system information required for the first UE based on the first assistance information.

[0056] In one embodiment, the first UE can determine the system information SI it requires, which may include a master system information block MIB or a system information block SIB, such as SIB1 or another SIB.

[0057] The system information required by the first UE may be system information that the first UE currently needs to use (also referred to as required SI), or may be system information that the first UE predicts should be used.

[0058] In turn, the first UE may transmit the first assistance information to the second UE, and the first assistance information may indicate to the second UE the first system information required by the first UE.

[0059] In one embodiment, the first assistance information includes an interest identifier corresponding to the first system information. For example, the required system information can be indicated by the interest identifier, and the first assistance information may include the interest identifier corresponding to the first system information, and the interest identifier and the system information may have a one-to-one relationship, i.e., one interest identifier bit corresponds to one type of system information, or a one-to-many relationship, i.e., one interest identifier bit corresponds to multiple types of system information.

[0060] The second UE and the first UE may store an association relationship between an interest identifier and system information, and after receiving the first assistance information, the second UE determines corresponding system information from the association relationship as first system information required by the first UE based on the interest identifier contained therein, and records and stores the type of the first system information required by the first UE. Thus, when the second UE determines that the first system information has been updated, the second UE can obtain the updated first system information and send the updated first system information to the first UE, and the first UE can timely obtain the updated first system information from the second UE even if it does not know that the base station has updated the first system information.

[0061] According to an embodiment of the present disclosure, a first UE may instruct a second UE by first assistance information to inform the second UE of system information required by the first UE, so that when the second UE later determines that the first system information has been updated, the second UE may timely transmit the updated first system information to the first UE, so that the first UE may timely obtain the updated first system information from the second UE even if the first UE does not know that the base station has updated the first system information.

[0062] In addition, when the second UE, as a relay UE, communicates with the first UE, as a remote UE, via a sidelink, the communication method includes at least one of unicast, multicast, and broadcast.

[0063] For example, the second UE may send updated first system information to the first UE in a unicast manner, and broadcast SIB1 received from the base station in a broadcast manner, so that the first UE can determine whether the first system information currently stored in itself is up to date based on the SIB1 broadcast by the second UE, and if not, can send a system information request to the second UE to request the second UE to send the latest first system information to the first UE.

[0064] In this manner, the first UE can still obtain the latest first system information from the second UE, but in this process, the first UE first needs to determine whether to update the first system information based on the SIB1 broadcast by the second UE, and then send a system information request to the second UE if an update is required. According to the embodiment shown in FIG. 1, the first UE can obtain the latest first system information from the second UE while performing these steps, thereby ensuring that the first UE obtains the latest first system information as quickly as possible.

[0065] 5 is a schematic flowchart of another assistance information receiving method according to an embodiment of the present disclosure. As shown in FIG. 5, the method further includes the following steps:

[0066] In step S501, in response to the first system information being updated, the updated first system information is obtained.

[0067] In step S502, send the updated first system information to the first UE.

[0068] In one embodiment, the second UE may receive SIB1 broadcasted by the base station and determine whether the first system information has been updated based on the version number for the first system information in SIB1. For example, the second UE may store the first system information and the corresponding version number. After receiving SIB1 broadcasted by the base station, the second UE may determine whether the version number corresponding to the first system information included in SIB1 is the same as the stored version number. If the versions are the same, the second UE may determine that the first system information has not been updated. If the versions are different, the second UE may determine that the first system information has been updated.

[0069] Then, when it is determined that the first system information has been updated, the first UE receives the updated first system information broadcast by the base station based on the setting for the first system information in SIB1, or receives the updated first system information by sending a request to the base station to request the base station to broadcast the updated first system information if the base station has not broadcast the first system information. Then, the first UE can transmit the obtained updated first system information to the first UE.

[0070] 6 is a schematic flowchart of another method for receiving assistance information according to an embodiment of the present disclosure. As shown in FIG. 6, the method further includes the following steps:

[0071] In step S601, in response to the first support information including a request identifier, the latest version of system information corresponding to the request identifier is obtained.

[0072] In step S602, send the latest version of system information corresponding to the request identifier to the first UE.

[0073] The first UE can also determine the system information that currently needs to be acquired. For example, if it is determined based on SIB1 broadcasted by the second UE that the versions of some currently stored system information are not the latest, the system information whose versions are not the latest can be the system information that needs to be acquired, and thus a request identifier can be added to the first assistance information and sent to the second UE.

[0074] Here, the system information that the first UE requests to acquire can be indicated by a request identifier, the first support information may include the request identifier, and the request identifier and the system information may have a one-to-one relationship, i.e., one request identifier bit corresponds to one type of system information, or a one-to-many relationship, i.e., one request identifier bit corresponds to multiple types of system information.

[0075] The second UE can transmit the latest version of the system information corresponding to the request identifier to the first UE. For example, if the second UE currently stores the latest version of the system information corresponding to the request identifier, it can directly transmit the stored latest version of the system information corresponding to the request identifier to the first UE. For example, if the second UE does not currently store the latest version of the system information corresponding to the request identifier, it can obtain the latest version of the system information corresponding to the request identifier from the base station and transmit it to the first UE, and then transmit the obtained system information to the first UE.

[0076] 7 is a schematic flowchart of another method for receiving assistance information according to an embodiment of the present disclosure. As shown in FIG. 7, the method further includes the following steps:

[0077] In step S701, second assistance information is sent to a network side device, and the second assistance information is used to instruct the network side device about first system information required by the first UE. The network side device may be a base station or a core network, and the following description mainly takes the base station as an example.

[0078] In one embodiment, the second UE determines the first system required by the first UE based on the received first assistance information, and then transmits second assistance information to the base station, so as to notify the base station of the first system information required by the first UE through the second assistance information.

[0079] In one embodiment, the second assistance information is used to further indicate a UE identifier of the first UE. After receiving the second assistance information, the base station can determine the first system information needed by the first UE, record whether the first UE is interested in any first system information for subsequent use, and if the first system information has not been broadcast, can broadcast the latest version of the first system information so that the second UE can obtain the latest version of the first system information and send it to the first UE.

[0080] Here, when the base station subsequently determines that the first UE has selected or reselected another UE as a relay UE, it can transmit the first system information required by the first UE to the other UE, so that the other UE can timely determine the first system information required by the first UE. Of course, this operation may be performed alternatively or entirely with the above-mentioned first UE transmitting the first assistance information to the selected or reselected UE after selecting or reselecting the UE, and specifically can be selected as needed.

[0081] 8 is a schematic flowchart of another method for receiving assistance information according to an embodiment of the present disclosure. As shown in FIG. 8, the method further includes the following steps:

[0082] In step S801, the third assistance information transmitted from the network side device is received.

[0083] In step S802, determine second system information required for a third UE based on the third assistance information.

[0084] In one embodiment, the base station determines the second system information required by the third UE, and then can inform the second UE of the second system information required by the third UE through the third assistance information, so that when the third UE subsequently selects or reselects the second UE as a relay UE, the second UE can determine the second system information required by the third UE as soon as possible.

[0085] 9 is a schematic flowchart of another method for receiving assistance information according to an embodiment of the present disclosure. As shown in FIG. 9, the method further includes the following steps:

[0086] In step S901, if it is determined that the second system information has been updated in response to being selected or reselected as a relay UE by the third UE, the updated second system information is obtained.

[0087] In step S902, send the updated second system information to the third UE.

[0088] In one embodiment, when the second UE is subsequently selected or reselected as a relay UE by the third UE, the second UE determines the second system information required for the third UE based on the assistance information previously transmitted from the base station. If it is determined that the second system information has been updated, the second UE can obtain the updated second system information and transmit the updated second system information to the third UE so that the third UE can obtain the updated second system information in a timely manner.

[0089] 10 is a schematic flowchart of a method for receiving assistance information according to an embodiment of the present disclosure. The method according to this embodiment can be applied to network-side devices such as base stations and core networks. The following description mainly takes a base station as an example, and the base station includes, but is not limited to, a 4G base station, a 5G base station, a 6G base station, and other base stations in a communication system.

[0090] The base station may have a communication connection with a second UE, but not with a first UE, in which case the first UE may be a remote UE and the second UE may be a relay UE.

[0091] Here, the first UE can communicate with the second UE, for example, via a sidelink link, and the interface between the first UE and the second UE may be a PC-5 interface. The first UE and the second UE may be communication devices, such as, but not limited to, mobile phones, tablets, wearable devices, sensors, and Internet of Things devices.

[0092] It should be noted that this does not mean that the first UE is always in a disconnected state and the second UE is always in a connected state, but that the first UE can communicate with the second UE when in a connected state, and can also communicate with the second UE when in a disconnected state. Hereinafter, examples of the present disclosure will be mainly illustrated when the first UE is a remote UE and the second UE is a relay UE.

[0093] As shown in FIG. 10, the assistance information receiving method includes the following steps:

[0094] In step S1001, second assistance information transmitted from a second UE is received.

[0095] In step S1002, determine first system information required for the first UE based on the second assistance information.

[0096] In one embodiment, the first UE can determine the system information (SI) it requires, which may include a master system information block (MIB) or a system information block (SIB), such as SIB1 or another SIB.

[0097] The system information required by the first UE may be system information that the first UE currently needs to use (also referred to as required SI), or may be system information that the first UE predicts should be used.

[0098] In turn, the first UE may transmit the first assistance information to the second UE, and the first assistance information may indicate to the second UE the first system information required by the first UE.

[0099] In one embodiment, the first assistance information includes an interest identifier corresponding to the first system information. For example, the required system information can be indicated by the interest identifier, and the first assistance information may include the interest identifier corresponding to the first system information, and the interest identifier and the system information may have a one-to-one relationship, i.e., one interest identifier bit corresponds to one type of system information, or a one-to-many relationship, i.e., one interest identifier bit corresponds to multiple types of system information.

[0100] The second UE and the first UE may store an association relationship between an interest identifier and system information, and after receiving the first assistance information, the second UE determines corresponding system information from the association relationship as first system information required by the first UE based on the interest identifier contained therein, and records and stores the type of the first system information required by the first UE. Thus, when the second UE determines that the first system information has been updated, the second UE can obtain the updated first system information and send the updated first system information to the first UE, and the first UE can timely obtain the updated first system information from the second UE even if it does not know that the base station has updated the first system information.

[0101] Furthermore, the second UE can determine the first system required for the first UE based on the received first assistance information, and then transmit the second assistance information to the base station, and notify the base station of the first system information required for the first UE through the second assistance information.

[0102] In one embodiment, the second assistance information is used to further indicate a UE identifier of the first UE. After receiving the second assistance information, the base station can determine the first system information needed by the first UE and record whether the first UE is interested in any of the first system information for subsequent use.

[0103] Here, if the base station subsequently determines that the first UE has selected or reselected the other UE as a relay UE, it can transmit the first system information required by the first UE to the other UE so that the other UE can determine the first system information required by the first UE in a timely manner.

[0104] 11 is a schematic flowchart of another assistance information receiving method according to an embodiment of the present disclosure. As shown in FIG. 11, the method further includes the following steps:

[0105] In step S1101, in response to the fact that the first system information has not been broadcast, the first system information is broadcast.

[0106] In one embodiment, after determining the first system information required by the first UE, the base station may further determine whether to broadcast the first system information; if the first system information has not been broadcast, the base station may broadcast the latest version of the first system information so that the second UE can update the latest version of the first system information and send it to the first UE.

[0107] 12 is a schematic flowchart of another method for receiving assistance information according to an embodiment of the present disclosure. As shown in FIG. 12, the method further includes the following steps:

[0108] In step S1102, in response to determining that the first UE has selected or reselected the other UE as a relay UE, send third assistance information to the other UE, where the third assistance information is used to indicate to the other UE first system information required by the first UE.

[0109] In one embodiment, after determining that the first UE has selected or reselected the other UE as a relay UE, the base station may transmit third assistance information to the other UE, and the third assistance information may indicate to the other UE first system information required by the first UE. Thus, after determining the first system information required by the first UE based on the assistance information transmitted from the base station, when the other UE determines that the first system information has been updated, the other UE may obtain the updated first system information and transmit the updated first system information to the third UE, so that the first UE can timely obtain the updated first system information.

[0110] Corresponding to the above embodiments of the support information transmitting method and the support information receiving method, the present disclosure further provides embodiments of a support information transmitting device and a support information receiving device.

[0111] An embodiment of the present disclosure provides an assistance information transmission device, which may be applied to a first UE, and the first UE may communicate with a second UE, for example, via a sidelink link, and the interface between the first UE and the second UE may be a PC-5 interface. The first UE and the second UE may include, but are not limited to, communication devices such as mobile phones, tablets, wearable devices, sensors, and Internet of Things devices.

[0112] In one embodiment, when performing the steps of the method, the first UE may be in a connected state or a non-connected state, such as an idle state or an inactive state, and can be set as needed.

[0113] In some embodiments of the present disclosure, the first UE may be a remote UE and the second UE may be a relay UE, i.e., there is a communication connection between the second UE and the base station, and there is no communication connection between the first UE and the base station.

[0114] It should be noted that this does not mean that the first UE is always in a disconnected state and the second UE is always in a connected state, but that the first UE can communicate with the second UE when in a connected state, and can also communicate with the second UE when in a disconnected state. Hereinafter, examples of the present disclosure will be mainly illustrated when the first UE is a remote UE and the second UE is a relay UE.

[0115] In one embodiment, the base station includes, but is not limited to, a base station in a communication system such as a 4G base station, a 5G base station, or a 6G base station.

[0116] In one embodiment, the assistance information transmitting device includes one or more processors, and the processors are configured to perform the following: transmitting first assistance information to a second UE, where the first assistance information is used to indicate to the second UE first system information required by the first UE.

[0117] In one embodiment, the processor is configured to perform, after selecting or reselecting the second UE as a relay UE, transmitting the first assistance information to the second UE in response to the first assistance information not being transmitted to the second UE.

[0118] In one embodiment, the processor is configured to execute transmitting the first assistance information to the second UE in response to a change in the type of required first system information.

[0119] In one embodiment, the first assistance information includes an interest identifier corresponding to the first system information.

[0120] In one embodiment, the first assistance information further includes a request identifier for instructing the second UE to transmit the latest version of system information corresponding to the request identifier to the first UE.

[0121] The embodiments of the present disclosure further provide an assistance information receiving device, which may be applied to a second UE, and the second UE may communicate with the first UE, for example, via a sidelink link, and the interface between the first UE and the second UE may be a PC-5 interface. The first UE and the second UE may include, but are not limited to, communication devices such as mobile phones, tablets, wearable devices, sensors, and Internet of Things devices.

[0122] In one embodiment, when communicating with the second UE, the first UE may be in a connected state or a non-connected state, such as an idle state or an inactive state, and can be configured as needed.

[0123] In some embodiments of the present disclosure, the first UE may be a remote UE and the second UE may be a relay UE, i.e., there is a communication connection between the second UE and the base station, and there is no communication connection between the first UE and the base station.

[0124] Note that this does not mean that the first UE is always in a disconnected state and the second UE is always in a connected state. For example, in the embodiment shown in Figure 4, the first UE can communicate with the second UE when in a connected state, and can also communicate with the second UE when in a disconnected state. Hereinafter, examples of the present disclosure will be mainly illustrated when the first UE is a remote UE and the second UE is a relay UE.

[0125] In one embodiment, the base station includes, but is not limited to, a base station in a communication system, such as a 4G base station, a 5G base station, or a 6G base station.

[0126] In one embodiment, the assistance information receiving device includes one or more processors, and the processors are configured to receive first assistance information transmitted from a first UE; and determine, based on the first assistance information, first system information required for the first UE.

[0127] In one embodiment, the processor is further configured to, if it is determined that the first system information has been updated, obtain updated first system information and transmit the updated first system information to the first UE.

[0128] In one embodiment, the processor is further configured to, in response to the first assistance information including the request identifier, obtain a latest version of system information corresponding to the request identifier and transmit the latest version of system information corresponding to the request identifier to the first UE.

[0129] In one embodiment, the processor is further configured to send second assistance information to the network side device, where the second assistance information is used to indicate to the network side device first system information required for the first UE.

[0130] In one embodiment, the second assistance information is used to further indicate a UE identifier of the first UE.

[0131] In one embodiment, the processor is further configured to receive third assistance information sent from the network side device; and determine, based on the third assistance information, second system information required for the third UE.

[0132] In one embodiment, the processor is further configured to, in response to being selected or reselected as a relay UE by the third UE, if it is determined that the second system information has been updated, obtain updated second system information and transmit the updated second system information to the third UE.

[0133] An embodiment of the present disclosure further provides a support information receiving device, which can be applied to network side devices such as base stations and core networks. The following description mainly uses base stations as an example, and the base stations include, but are not limited to, base stations in communication systems such as 4G base stations, 5G base stations, and 6G base stations.

[0134] The base station may have a communication connection with a second UE, but not with a first UE, in which case the first UE may be a remote UE and the second UE may be a relay UE.

[0135] Here, the first UE can communicate with the second UE, for example, via a sidelink link, and the interface between the first UE and the second UE may be a PC-5 interface. The first UE and the second UE may be communication devices, such as, but not limited to, mobile phones, tablets, wearable devices, sensors, and Internet of Things devices.

[0136] It should be noted that this does not mean that the first UE is always in a disconnected state and the second UE is always in a connected state, but that the first UE can communicate with the second UE when in a connected state, and can also communicate with the second UE when in a disconnected state. Hereinafter, examples of the present disclosure will be mainly illustrated when the first UE is a remote UE and the second UE is a relay UE.

[0137] In one embodiment, the assistance information receiving device includes one or more processors, and the processors are configured to receive second assistance information transmitted from a second UE; and determine, based on the second assistance information, first system information required for the first UE.

[0138] In one embodiment, the processor is further configured to perform broadcasting the first system information in response to the first system information not being broadcast.

[0139] In one embodiment, the processor is further configured to, in response to determining that the first UE has selected or reselected the other UE as a relay UE, transmit third assistance information to the other UE, wherein the third assistance information is used to indicate to the other UE the first system information required by the first UE.

[0140] Regarding the apparatus in the above embodiment, the specific manner in which each module performs the operation has been described in detail in the related method embodiment, so it will not be described in detail here.

[0141] The device embodiments basically correspond to the method embodiments, so for relevant points, please refer to the partial description of the method embodiments. The above device embodiments are merely examples, and modules described as separate elements therein may or may not be physically separated, and elements displayed as modules may or may not be physical modules, i.e., they may be located in one place or distributed across multiple network modules. The objectives of the present embodiment can be achieved by selecting some or all of the modules according to actual needs. Those skilled in the art can understand and implement the present embodiment without any creative effort.

[0142] An embodiment of the present disclosure further provides a communication device, which includes a processor and a memory for storing a computer program, and wherein, when the computer program is executed by the processor, the method for transmitting assistance information described in any of the above embodiments and / or the method for receiving assistance information applied to a second UE described in any of the above embodiments is realized.

[0143] An embodiment of the present disclosure further provides a communication device, which includes a processor and a memory for storing a computer program, and wherein, when the computer program is executed by the processor, the assistance information receiving method applicable to the network side device described in any of the above embodiments is realized.

[0144] An embodiment of the present disclosure provides a computer-readable storage medium for storing a computer program, which, when executed by a processor, realizes steps of the assistance information transmission method described in any of the above embodiments and / or the assistance information reception method applied to the second UE described above.

[0145] An embodiment of the present disclosure provides a computer-readable storage medium for storing a computer program, which, when executed by a processor, realizes steps of the assistance information receiving method applied to the network side device described in any of the above embodiments.

[0146] 13, which is a schematic block diagram of an apparatus 1300 for receiving assistance information according to an embodiment of the present disclosure. The apparatus 1300 can be provided as a base station. Referring to FIG. 13, the apparatus 1300 includes a processing component 1322, a wireless transmitting / receiving component 1324, an antenna component 1326, and a signal processing unit specific to the wireless interface, and the processing component 1322 can further include one or more processors. Any one processor of the processing component 1322 can be configured to implement the assistance information receiving method applied to the network-side device described in any of the above embodiments.

[0147] 14 is a schematic block diagram of an apparatus 1400 for transmitting and receiving assistance information according to an embodiment of the present disclosure. For example, the apparatus 1400 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0148] Referring to FIG. 14 , the device 1400 may include one or more components: a processing component 1402, a memory 1404, a power component 1406, a multimedia component 1408, an audio component 1410, an input / output (I / O) interface 1412, a sensor component 1414, and a communication component 1416.

[0149] The processing component 1402 typically controls the overall operation of the device 1400, such as operations related to display, telephone calls, data communications, camera operation, and recording operations. The processing component 1402 may include one or more processors 1420 that execute instructions to complete all or part of the steps of the assistance information transmission method and assistance information reception method described above, which are applicable to the UE. Additionally, the processing component 1402 may include one or more modules to facilitate interaction between the component 1402 and other components. For example, the processing component 1402 may include a multimedia module to facilitate interaction between the multimedia component 1408 and the processing component 1402.

[0150] Memory 1404 is configured to store various types of data to support operation on device 1400. Examples of this data include instructions for any applications or methods to operate on device 1400, contact data, phone book data, messages, images, videos, etc. Memory 1404 can be implemented by any type of volatile or non-volatile storage device, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk, optical disk, etc., or a combination thereof.

[0151] The power supply component 1406 provides power to the various components of the device 1400. The power supply component 1406 may include a power management system, one or more power supplies, and other components associated with the generation, management, and distribution of power for the device 1400.

[0152] The multimedia component 1408 includes a screen that provides an output interface between the device 1400 and a user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). When the screen includes a touch panel, the screen is implemented as a touchscreen and can receive input signals from a user. The touch panel includes one or more touch sensors for detecting touches, slides, and gestures on the touch panel. The touch sensors can detect not only the boundaries of a touch or slide motion but also the duration and pressure associated with the touch or slide motion. In some embodiments, the multimedia component 1408 includes a front camera and / or a rear camera. When the device 1400 is in an operating mode, such as a photo mode or a video mode, the front camera and / or the rear camera can receive external multimedia data. Each front camera and rear camera may have a fixed optical lens system or a focal length and optical zoom capability.

[0153] The audio component 1410 is configured to output and / or input audio signals. For example, the audio component 1410 includes a microphone (MIC) configured to receive external audio signals when the device 1400 is in an operational mode such as a call mode, a recording mode, a voice recognition mode, etc. The received audio signals may be further stored in the memory 1404 or transmitted via the communication component 1416. In some embodiments, the audio component 1410 further includes a speaker for outputting audio signals.

[0154] The I / O interface 1412 provides an interface between the processing component 1402 and a peripheral interface module, which can be a keyboard, a click wheel, buttons, etc. These buttons include, but are not limited to, a home button, volume buttons, a start button, a lock button, etc.

[0155] The sensor assembly 1414 includes one or more sensors for providing various aspects of status assessment for the device 1400. For example, the sensor component 1414 can detect the relative position of components such as the display and keypad of the device 1400. The sensor component 1414 can also detect changes in the position of the device 1400 or a component of the device 1400, the presence or absence of contact between a user and the device 1400, the orientation or acceleration / deceleration of the device 1400, and temperature changes of the device 1400. The sensor assembly 1414 can include a proximity sensor configured to detect the presence of a nearby object in the absence of physical contact. The sensor component 1414 can also include an optical sensor, such as a CMOS or CCD image sensor for use in imaging applications. In some examples, the sensor assembly 1414 can also include an acceleration sensor, a gyro sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0156] The communication component 1416 is configured to facilitate wired or wireless communication between the device 1400 and other devices. The device 1400 can access wireless networks based on communication standards such as WiFi, 2G or 3G, 4G LTE, 5G NR, or a combination thereof. In an exemplary embodiment, the communication component 1416 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 1416 also includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0157] In an exemplary embodiment, the apparatus 1400 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components for performing the above-described assistance information transmission method, assistance information reception method suitable for the UE.

[0158] The exemplary embodiment also provides a non-transitory computer-readable storage medium including instructions that can be executed by processor 1420 of apparatus 1400 to complete the above-described assistance information transmitting method and assistance information receiving method applicable to a UE. For example, the non-transitory computer-readable storage medium may be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0159] Other embodiments of the present disclosure will be readily apparent to those skilled in the art after studying and practicing the specification and the disclosure disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the present disclosure in accordance with the general principles of the present disclosure, including common knowledge or customary technical means known in the art but not disclosed herein. The specification and embodiments are to be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the following claims.

[0160] It should be understood that the present disclosure is not limited to the exact construction described above and shown in the drawings, and various modifications and variations may be made without departing from the scope of the present disclosure, which is limited only by the appended claims.

[0161] It should be noted that, in this specification, relational terms such as "first" and "second" are used solely to distinguish one entity or operation from another, without necessarily requiring or implying that any such actual relationship or order exists between those entities or operations. The terms "comprise," "include," or any other variation thereof are intended to encompass a non-exclusive inclusion, such that a process, method, article, or device that includes a set of elements includes not only those elements but also other elements not expressly listed, or elements inherent in such process, method, article, or device. Absent further limitations, an element defined by the phrase "comprises one of" does not exclude the presence of other identical elements in a process, method, article, or device that includes that element.

[0162] The above provides a detailed introduction to the methods and devices provided by the embodiments of the present disclosure. Although specific examples have been used in the present text to explain the principles and embodiments of the present disclosure, the explanation of the above embodiments is only intended to assist in understanding the method of the present disclosure and its core ideas. At the same time, those skilled in the art will recognize that there may be changes in the specific embodiments and application scope based on the ideas of the present disclosure. For these reasons, the contents of this specification should not be construed as limitations on the present disclosure.

Claims

1. 1. An assistance information transmission method performed by a first user equipment (UE), comprising: transmitting first assistance information to a second User Equipment (UE), the first assistance information being used to indicate to the second UE first system information required by the first UE; The step of transmitting first assistance information to the second UE includes: transmitting the first assistance information to the second UE in response to the first assistance information not being transmitted to the second UE after selecting or reselecting the second UE as a relay UE; 2. A support information transmission method comprising:

2. The step of transmitting first assistance information to the second UE includes: transmitting the first assistance information to the second UE in response to a change in a type of required first system information.

2. The support information transmission method according to claim 1.

3. The first assistance information further includes a request identifier, and the request identifier is used to instruct the second UE to transmit to the first UE the latest version of system information corresponding to the request identifier.

3. The support information transmission method according to claim 1 or 2.

4. A method for receiving assistance information performed by a second user equipment (UE), comprising: receiving first assistance information transmitted from a first UE, the first assistance information being used to indicate to the second UE first system information required by the first UE, the first assistance information being transmitted in response to the first UE not having transmitted the first assistance information to the second UE after the second UE has been selected or reselected as a relay UE; and determining first system information required for the first UE based on the first assistance information.

2. A support information receiving method comprising:

5. The method comprises: In response to the first system information being updated, obtaining updated first system information; transmitting the updated first system information to the first UE.

5. The support information receiving method according to claim 4.

6. The method comprises: In response to a request identifier being included in the first assistance information, obtaining a latest version of system information corresponding to the request identifier; transmitting to the first UE an updated version of system information corresponding to the request identifier.

6. The support information receiving method according to claim 4 or 5.

7. The method comprises: and transmitting second assistance information to a network side device, wherein the second assistance information is used to indicate to the network side device first system information required for the first UE.

7. The support information receiving method according to claim 4, wherein:

8. the first assistance information is transmitted by the first UE in response to a change in a type of first system information required.

7. The support information receiving method according to claim 4, wherein:

9. 1. An assistance information receiving method executed by a network side device, comprising: receiving second assistance information transmitted from a second user equipment (UE); determining first system information required for a first UE based on the second assistance information; the first system information is indicated to the second UE by first assistance information, and the first assistance information is transmitted to the second UE in response to the first assistance information not being transmitted to the second UE after the second UE is selected or reselected by the first UE as a relay UE; 2. A support information receiving method comprising:

10. The method comprises: broadcasting the first system information in response to the first system information not being broadcast.

10. The support information receiving method according to claim 9.

11. the first assistance information is transmitted by the first UE to the second UE in response to a change in a type of first system information required.

11. The support information receiving method according to claim 9 or 10.

12. 1. A method for application to a communication system, the communication system including a first User Equipment (UE), a second UE, and a base station, the method comprising: a step of transmitting first assistance information from the first UE to the second UE, the first assistance information being used to indicate to the second UE first system information required by the first UE; The step of transmitting first assistance information from the first UE to the second UE includes: and after selecting or reselecting a second UE as a relay UE, in response to the first assistance information not being transmitted to the second UE, the first UE transmitting the first assistance information to the second UE. A method characterized by:

13. The step of transmitting first assistance information from the first UE to the second UE includes: in response to a change in a type of required first system information, the first UE transmitting the first assistance information to the second UE.

13. The method of claim 12.

14. The first assistance information further includes a request identifier, and the request identifier is used to instruct the second UE to transmit to the first UE the latest version of system information corresponding to the request identifier.

14. The method according to claim 12 or 13.

15. The method comprises: receiving, by the second UE, first assistance information transmitted from the first UE; and determining, by the second UE, first system information required for the first UE based on the first assistance information. The method according to any one of claims 12 to 14.

16. The method comprises: a step of the second UE sending second assistance information to a network side device, the second assistance information being used to indicate first system information required by the first UE to the network side device; receiving, by the network side device, second assistance information sent from the second UE; the network side device determining first system information required for a first UE based on the second assistance information; and in response to the first system information not being broadcast, the network side device broadcasting the first system information. The method according to any one of claims 12 to 15.

17. 1. A communication system comprising: a first user equipment (UE), a second UE, and a base station; The first UE is configured to implement the assistance information transmission method according to any one of claims 1 to 3; The second UE is configured to realize the assistance information receiving method according to any one of claims 4 to 8, The base station is configured to implement the assistance information receiving method according to any one of claims 9 to 11. A communication system comprising:

18. A communication device, a processor; a memory for storing a computer program; When the computer program is executed by a processor, the support information transmitting method according to any one of claims 1 to 3 or the support information receiving method according to any one of claims 4 to 8 is realized. A communication device comprising:

19. A communication device, a processor; a memory for storing a computer program; When the computer program is executed by a processor, the support information receiving method according to any one of claims 9 to 11 is realized. A communication device comprising:

20. A computer-readable storage medium for storing a computer program, comprising: When the computer program is executed by a processor, the steps of the support information transmitting method according to any one of claims 1 to 3 or the support information receiving method according to any one of claims 4 to 8 are realized. A computer-readable storage medium comprising:

21. A computer-readable storage medium for storing a computer program, comprising: When the computer program is executed by a processor, the steps of the support information receiving method according to any one of claims 9 to 11 are realized. A computer-readable storage medium comprising:

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