Information transmission method, apparatus, communication device and storage medium

Abstract

An embodiment of the present disclosure relates to an information transmission method, an apparatus, a communication device, and a storage medium, in which an access network device transmits a valid configuration for a non-connected user equipment (UE) to determine a reference signal configuration for downlink synchronization, the non-connected UE including an idle UE and / or an inactive UE.

Description

[Technical Field]

[0001] The present application relates to the field of wireless communication technology, but is not limited to the field of wireless communication technology, and in particular to information transmission methods, apparatus, communication devices and storage media. [Background technology]

[0002] The current Release 17 (R17) 3GPP standardization of the Energy Saving Project proposes a technique for downlink synchronization when the user equipment (UE) is in a non-connected state (e.g., idle or inactive state) other than the connected state.

[0003] A disconnected UE can achieve downlink synchronization with the base station by transmitting and sharing a Tracking Reference Signal (TRS) and / or a Channel State Information-Reference Signal (CSI-RS). Summary of the Invention [Problem to be solved by the invention]

[0004] In view of this, embodiments of the present disclosure provide an information transmission method, apparatus, communication device, and storage medium. [Means for solving the problem]

[0005] According to a first aspect of an embodiment of the present disclosure, there is provided an information transmission method performed by an access network device, comprising: a non-connected user equipment (UE) transmitting a valid configuration for determining a reference signal configuration for downlink synchronization; The non-connected UEs include idle UEs and / or inactive UEs.

[0006] According to a second aspect of an embodiment of the present disclosure, there is provided an information transmission method performed by a user equipment (UE), comprising: receiving a valid configuration; determining a reference signal configuration for downlink synchronization of the disconnected UE based on the valid configuration; The non-connected UEs include idle UEs and / or inactive UEs.

[0007] According to a third aspect of the embodiment of the present disclosure, there is provided an information transmission apparatus executed by an access network device, comprising: The system includes a first transmitting module configured to transmit a valid configuration for determining a reference signal configuration for downlink synchronization by an unconnected user equipment (UE), The non-connected UEs include idle UEs and / or inactive UEs.

[0008] According to a fourth aspect of the present disclosure, there is provided an information transmission device executed by a user equipment (UE), comprising: a first receiving module configured to receive an enabling setting; a second determining module configured to determine a reference signal configuration for downlink synchronization of the disconnected UE based on the valid configuration; An information transmission device is provided, wherein the unconnected UEs include idle UEs and / or inactive UEs.

[0009] According to a fifth aspect of an embodiment of the present disclosure, there is provided a communication device including a processor, a memory, and an executable program stored in the memory and executed by the processor, wherein when the processor executes the executable program, the device performs the steps of the information transmission method described in the first or second aspect.

[0010] According to a sixth aspect of an embodiment of the present disclosure, there is provided a storage medium having stored thereon an executable program that, when executed by a processor, implements the steps of the information transmission method described in the first or second aspect.

[0011] According to the information transmission method, apparatus, communication device, and storage medium provided by the embodiments of the present disclosure, an access network device transmits a valid configuration for a non-connected UE to determine a reference signal configuration for downlink synchronization, where the non-connected UE includes an idle UE and / or an inactive UE. In this way, the valid configuration is used by a non-connected UE to determine a reference signal configuration for downlink synchronization, so that whether a reference signal configuration is used for synchronization can be indicated according to actual needs, thereby improving the flexibility of using the reference signal configuration.

[0012] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of embodiments of the present disclosure. [Brief explanation of the drawings]

[0013] The drawings herein, 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 embodiments of the present disclosure. [Figure 1] 1 is a schematic diagram illustrating a wireless communication system according to an exemplary embodiment; [Figure 2] 1 is a schematic flowchart of an information transmission method according to an exemplary embodiment; [Figure 3] 10 is a schematic flowchart of another information transmission method according to an exemplary embodiment; [Figure 4] 10 is a schematic flowchart of yet another information transmission method according to an exemplary embodiment. [Figure 5] FIG. 1 is a block diagram of an information transmission device according to an exemplary embodiment. [Figure 6]FIG. 10 is a block diagram of another information transmission device according to an exemplary embodiment. [Figure 7] FIG. 1 is a block diagram of a device used for information transmission according to an exemplary embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0014] Reference will now be made in detail to illustrative embodiments, examples of which are illustrated in the drawings. When the following description refers to the drawings, the same reference numerals in different drawings indicate the same or similar elements unless otherwise indicated. The embodiments described in the following illustrative examples do not represent all embodiments consistent with embodiments of the present invention. On the contrary, they are merely examples of apparatus and methods consistent with some aspects of embodiments of the present invention, as set forth in the appended claims.

[0015] The terms used in the embodiments of the present disclosure are intended to describe particular embodiments only 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 type," "the," and "the" are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to all possible combinations of one or more of the associated listed items.

[0016] In the embodiments of the present disclosure, terms such as first, second, and third may be used to describe various pieces of information, but these information should not be limited to these terms. These terms are used only to distinguish between pieces of information of the same type. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the embodiments of the present disclosure. It should be understood that the term "upon" as used herein may be interpreted as "when," "when," or "in response to a determination," depending on the context.

[0017] Please refer to Fig. 1, which shows a schematic configuration diagram of a wireless communication system provided by an embodiment of the present disclosure. As shown in Fig. 1, the wireless communication system is a communication system based on cellular mobile communication technology. The wireless communication system may include several terminals 11 and several base stations 12.

[0018] Here, the terminal 11 may refer to a device that provides a user with a voice connection and / or a data connection. The terminal 11 can communicate with one or more core networks via a Radio Access Network (RAN). The terminal 11 may be an Internet of Things terminal, such as a sensor device, a mobile phone (also referred to as a "cellular" phone), or a computer with an Internet of Things terminal, and may be, for example, a fixed, portable, pocket-type, handheld, computer-integrated, or vehicle-mounted device. For example, the terminal 11 may be a station (STA), subscriber unit, mobile station, mobile station, mobile, remote station, access point, remote terminal, access terminal, user terminal, user agent, user device, or user equipment (UE). Alternatively, the terminal 11 may be an unmanned aerial vehicle device. Alternatively, the terminal 11 may be an in-vehicle device, such as an electronic control unit having a wireless communication function, or a wireless communication device with an external electronic control unit, or may be a roadside device, such as a street light, a traffic light, or other roadside device having a wireless communication function.

[0019] The base station 12 may be a network-side device in a wireless communication system. The wireless communication system may be a 4th generation mobile communication (4G) system, also called a Long Term Evolution (LTE) system. Alternatively, the wireless communication system may be a 5G system, also called a New Air Interface (NR) system or a 5G NR system. Alternatively, the wireless communication system may be a next-generation system of a 5G system. An access network in a 5G system may be called a New Generation-Radio Access Network (NG-RAN) or an MTC system.

[0020] Here, the base station 12 may be an evolved base station (eNB) used in a 4G system. Alternatively, the base station 12 may be a base station (gNB) using a centralized-distributed architecture in a 5G system. When the base station 12 uses a centralized-distributed architecture, the base station 12 typically includes a central unit (CU) and at least two distributed units (DUs). The central unit is configured with a protocol stack including a Packet Data Convergence Protocol (PDCP) layer, a Radio Link Control (RLC) layer, and a Media Access Control (MAC) layer, and the distributed units are configured with a protocol stack for a physical (PHY) layer. The embodiments of the present disclosure do not limit the specific implementation of the base station 12.

[0021] A wireless connection can be established between the base station 12 and the terminal 11 via a wireless air interface. In various embodiments, the wireless air interface is a wireless air interface based on a fourth generation mobile communication network technology (4G) standard. Alternatively, the wireless air interface is a wireless air interface based on a fifth generation mobile communication network technology (5G) standard. For example, the wireless air interface is a new air interface. Alternatively, the wireless air interface may be a wireless air interface based on a 5G next-generation mobile communication network technology standard.

[0022] In some embodiments, an E2E (End to End) connection can be established between the terminals 11, for example, in scenarios such as V2V (Vehicle to Vehicle) communication in vehicle to everything (V2X) communication, V2I (Vehicle to Infrastructure) communication, and V2P (Vehicle to Pedestrian) communication.

[0023] In some embodiments, the above wireless communication system may further include a network management device 13 .

[0024] Each of the base stations 12 is connected to a network management device 13. Here, the network management device 13 may be a core network device in a wireless communication system. For example, the network management device 13 may be a mobility management entity (MME) in an evolved packet core network (EPC). Alternatively, the network management device may be another core network device, such as a serving gateway (SGW), a public data network gateway (PGW), a policy and charging rules function (PCRF), or a home subscriber server (HSS). The implementation form of the network management device 13 is not limited by the embodiments of the present disclosure.

[0025] Acting entities according to the embodiments of the present disclosure include, but are not limited to, UEs such as mobile phone terminals that support cellular mobile communications, and base stations.

[0026] As shown in FIG. 2, this exemplary embodiment provides an information transmission method, which is applicable to a base station of a cellular mobile communication system, 201, wherein the UE in an unconnected state transmits a valid configuration for determining a reference signal configuration for downlink synchronization; The unconnected UEs include idle and / or inactive UEs.

[0027] Here, the UE may be a mobile phone terminal that performs wireless communication using cellular mobile communication technology, etc. The base station may be a communication device in a cellular mobile communication system that provides an access network interface to the UE. When a UE establishes a communication connection with an access network device such as a base station, the UE needs to perform downlink synchronization.

[0028] The access network device may transmit a reference signal for the UE to perform downlink synchronization. Before transmitting the reference signal, the access network device may transmit a reference signal configuration to indicate the physical resource to be used by the reference signal, and the UE receives the reference signal based on the reference signal configuration to perform downlink synchronization.

[0029] In one embodiment, the reference signal setting comprises: This includes signal configuration of a tracking reference signal (TRS) and / or a channel state information reference signal (CSI-RS). The CSI-RS is used by the UE to obtain at least one parameter such as channel conditions, beam management, mobility management, rate matching, etc.

[0030] Because the frequencies of the physical crystal oscillators in the base station and UE are slightly offset and cannot be perfectly matched, a phase offset occurs in the radio frequency carrier signal received by the UE. This appears as a phase rotation in the constellation diagram of the demodulated symbols received on the subcarriers. That is, the received modulation symbols are offset by a certain phase angle. This is due to the frequency offset accumulating over time. In this case, a tracking reference signal (TRS) is required to track the rotation phase of other data signals. The TRS is a multi-period CSI-RS, specifically, a NZP-CSI-RS in which one 4-port, three-CSI-RS density is located in two consecutive slots. The minimum spacing between two TRSs in a slot is four OFDM symbols in the time domain, and they are spaced four subcarriers apart in the frequency domain. The frequency and time errors can be estimated based on the TRS. By receiving data and compensating for these errors, the original modulation coordinate position for transmission can be restored.

[0031] In the related art, TRS and / or CSI-RS are only used by UEs in a connected state to perform downlink synchronization, whereas UEs in a non-connected state can also perform downlink synchronization using TRS and / or CSI-RS.

[0032] In the related art, a UE can perform downlink synchronization by receiving an SSB with three cycles, but the synchronization efficiency is low. Here, the UE can perform downlink synchronization using TRS and / or CSI-RS, and can achieve downlink synchronization with an SSB with fewer cycles (e.g., an SSB with one cycle).

[0033] The reference signal configuration may be a TRS and / or CSI-RS signal configuration configured by an access network device for a UE in a connected state, and a UE in a non-connected state can share the reference signal configuration and perform downlink synchronization using the TRS and / or CSI-RS. The reference signal configuration may be a TRS and / or CSI-RS signal configuration configured by an access network device for a UE in a connected state and a UE in a non-connected state. The reference signal configuration may be a TRS and / or CSI-RS signal configuration configured by an access network device for a UE in a non-connected state. A UE in a non-connected state can perform downlink synchronization using the TRS and / or CSI-RS based on the reference signal configuration configured for the UE.

[0034] The reference signal configuration of the reference signal may be sent by the access network device to the UE via downlink signaling, such as RRC signaling, when the UE is in a connected state. The access network device may send a valid configuration indicating whether the reference signal configuration can be used for downlink synchronization.

[0035] In one embodiment, the reference signal setting comprises: Physical layer resources and quasi-colocation (QCL) parameters; The physical layer resource includes one of the above. The reference signal configuration may include one or more TRS and / or CSI-RS signal configurations. The physical layer resources may include time domain resources and frequency domain resources, etc. The QCL parameters may include a QCL type, etc.

[0036] The valid configuration may indicate at least whether a reference signal configuration is valid. The valid configuration may also indicate a valid reference signal configuration among a plurality of reference signal configurations, an invalid reference signal configuration, etc. The valid configuration may indicate some valid configuration content and / or some invalid configuration content in the reference signal configuration. For example, the valid configuration may indicate valid and invalid frequency domain resources in the reference signal configuration.

[0037] The access network device can transmit the valid configuration to the UE, and the UE can determine employable and non-employable reference signal configurations based on the valid configuration.

[0038] In one embodiment, the UE can perform downlink synchronization based on a reference signal configured by an available reference signal configuration.

[0039] In one embodiment, the access network device may carry and send the valid configuration to the UE in physical layer signaling.

[0040] Here, the valid configuration may be explicitly or implicitly indicated in the physical layer signaling. For example, the access network device may indicate the valid configuration using at least one bit in the physical layer signaling. The access network device may also transmit predetermined physical layer signaling that implicitly indicates the valid configuration.

[0041] In this way, by using the valid setting for a non-connected UE to determine the reference signal setting for downlink synchronization, it is possible to indicate whether the reference signal setting is to be used for synchronization according to actual needs, thereby improving the flexibility of using the reference signal setting.

[0042] In one embodiment, the validity setting is: a first setting indicating that the reference signal setting is valid; or A second setting indicates that the reference signal setting is not valid. In embodiments of the present disclosure, the validity setting may be conveyed by any suitable signaling.

[0043] The valid setting may indicate whether a reference signal setting for a reference signal, such as TRS and / or CSI-RS, is valid. The valid setting may be a first setting or a second setting. The first setting indicates that the reference signal setting is valid, which indicates that the access network device transmits a reference signal based on the reference signal setting, e.g., the access network device transmits a reference signal using a physical resource configured by the reference signal setting. The UE performs downlink synchronization based on the TRS and / or CSI-RS configured by the reference signal setting. The second setting indicates that the reference signal setting is not valid, which indicates that the access network device does not transmit a reference signal based on the reference signal setting, e.g., the access network device does not transmit a reference signal using a physical resource configured by the reference signal setting. The UE cannot perform downlink synchronization based on the TRS and / or CSI-RS configured by the reference signal setting.

[0044] The valid setting can be a different value indicating whether the reference signal setting is valid or not. For example, "0" indicates that the reference signal setting is not valid, and "1" indicates that the reference signal setting is valid. Alternatively, "1" may indicate that the reference signal setting is not valid, and "0" may indicate that the reference signal setting is valid.

[0045] For example, an idle UE and / or an inactive UE may perform downlink synchronization via TRS and / or CSI-RS based on a reference signal configuration. If the effective configuration is a first configuration, it indicates that the reference signal configuration is effective, and after receiving the first configuration of the reference signal configuration, the UE may detect TRS and / or CSI-RS on the transmission resources configured by the reference signal configuration.

[0046] In one embodiment, the valid configuration is carried by paging downlink control information (DCI); and / or The validity setting is associated with a pre-paging instruction (PEI). The valid configuration may be carried by a paging DCI. The paging DCI may be used for scheduling paging messages. An access network device may carry the valid configuration in the paging DCI. For example, the valid configuration may occupy one or more bits of the paging DCI to indicate whether the reference signal configuration is valid.

[0047] The valid configuration may be associated with a PEI. The PEI is used to indicate to the UE whether there is a paging message for the UE at a Paging Occasion (PO). The valid configuration may be indicated by information associated with the PEI. For example, the valid configuration may be indicated by information carried by the PEI and / or signal feature information of the PEI.

[0048] The effective configuration based on physical layer signaling such as paging DCI and PEI is more flexible than MAC configuration and RRC configuration and can achieve dynamic configuration.

[0049] In one embodiment, the PEI is a PEI carried by a DCI, the DCI carrying the PEI further carrying the valid configuration; or The PEI signal includes a sequence-based PEI signal, the PEI signal being a physical layer signal, and the PEI signal has a corresponding relationship with the valid setting.

[0050] The PEI can occupy one or more bits of the DCI. The validity setting can be carried by the DCI that carries the PEI. For example, the validity setting may occupy one or more bits of the PEI, or the validity setting may occupy one or more bits in the DCI that are different from the PEI.

[0051] The PEI may be a physical layer signal. The PEI may indicate whether a paging message is present in the PO through a signal sequence. The PEI may indicate different valid configurations according to physical resources, such as a first configuration or a second configuration according to different frequency domain resources, and may further indicate whether a reference signal configuration is valid.

[0052] For example, as shown in Table 1, an access network device such as a base station can indicate an active configuration to a UE by using either a paging DCI or a PEI, or can indicate an active configuration to a UE by using a paging DCI and a PEI. The base station can first configure whether to indicate an active configuration at the physical layer, i.e., whether to indicate an active configuration by using a paging DCI and / or a PEI. In Table 1, "base station configuration" means that an active configuration is indicated using the physical layer, and "no configuration" means that an active configuration is not indicated using the physical layer.

[0053] [Table 1]

[0054] In one embodiment, transmitting the validity setting comprises: transmitting a DCI instructing the first configuration; transmitting the DCI instructing the second configuration; transmitting a PEI indicating the first configuration; and transmitting the PEI indicating the second configuration.

[0055] When a DCI is used to carry an effective configuration or when an effective configuration is associated with a PEI, the DCI or PEI may implicitly indicate the first configuration or the second configuration, or the DCI or PEI may explicitly indicate the first configuration or the second configuration.

[0056] For example, the DCI or PEI may implicitly indicate the first or second configuration. As shown in sequence numbers 1 and 2 in Table 1, there is only one case where the DCI carries the valid configuration and the valid configuration is associated with the PEI. When the base station configuration carries the valid configuration using the DCI, the DCI may implicitly indicate the first or second configuration, and the UE can determine whether the reference signal configuration is valid when it receives the DCI. Here, the DCI may be one or a type of DCI agreed upon in advance, such as a paging DCI. When the base station configuration and the valid configuration are associated with the PEI, the PEI may implicitly indicate the first or second configuration, and the UE can determine whether the reference signal configuration is valid when it receives the PEI. Here, the PEI may be a pre-agreed PEI, such as a PEI using a predetermined physical transmission resource.

[0057] In this way, by the DCI or PEI implicitly indicating a valid setting, there is no need to change the DCI or PEI, and the amount of information in the DCI or PEI increases, improving communication efficiency.

[0058] In one embodiment, if the access network device transmits only the first configuration, the UE may determine that the current configuration is the second configuration if it does not receive the first configuration. If the access network device transmits only the second configuration, the UE may determine that the current configuration is the first configuration if it does not receive the second configuration.

[0059] As an example, the access network device may only transmit a DCI that implicitly indicates the first configuration, and if the UE does not receive the DCI, the UE may determine that the reference signal configuration is not valid, i.e., the UE may determine that the current configuration is the second configuration.

[0060] In one embodiment, as shown in FIG. 3, the method comprises: In response to having at least two of the valid configurations, transmitting a valid indication indicating a valid one of the at least two valid configurations; and In response to having one of the valid settings, determining 202b the corresponding valid setting as the valid setting by default.

[0061] Here, the valid configuration may be carried by different physical layer signaling, and the UE may receive multiple valid configurations carried by different physical layer signaling. For example, the UE may receive two valid configurations via the DCI and the PEI, respectively. Or, the UE may receive three valid configurations carried by three different physical layer signaling, respectively. The validity indication may indicate a valid one of the multiple valid configurations. The validity indication may indicate physical layer signaling associated with the valid valid configuration. For example, the validity indication may indicate that the valid configuration carried in the DCI is valid.

[0062] For example, if the access network device configures that a valid configuration is carried using the DCI and that the valid configuration is associated with the PEI, the access network device may transmit a validity indication to indicate that the valid configuration carried by the DCI or the valid configuration associated with the PEI is valid. If the UE simultaneously receives the valid configuration carried by the DCI and the valid configuration associated with the PEI, it may determine the valid valid configuration based on the validity indication. This reduces judgment errors caused by the UE being unable to distinguish between valid and invalid valid configurations, and reduces the UE's misjudgment of whether the reference signal configuration is valid.

[0063] If the access network device is configured to carry a valid configuration using a DCI and the valid configuration is associated with a PEI, when the access network device carries a valid configuration by DCI, the UE determines that the valid configuration carried by the DCI is valid, and when the access network device indicates a valid configuration by PEI, the UE determines that the valid configuration associated with the PEI is valid.

[0064] In one embodiment, transmitting a valid configuration includes transmitting a system information block (SIB) carrying the valid configuration.

[0065] The access network device may convey a validity setting by higher layer signaling that indicates whether the reference signal setting is valid or not.

[0066] As an example, in the case shown in sequence number 4 in Table 1, the base station has not set the valid configuration carried by the DCI or the valid configuration associated with the PEI, and the base station can then carry the valid configuration through the SIB. The UE can receive the SIB and parse the valid configuration from the SIB.

[0067] In this way, the access network device can indicate the effective configuration by the physical layer and can carry the effective configuration by higher layer signaling, providing greater flexibility in transmitting the effective configuration.

[0068] As shown in FIG. 4, this exemplary embodiment provides an information transmission method, which is applicable to a UE in a cellular mobile communication system, Step 401 of receiving a valid configuration; and determining 402 a reference signal configuration for downlink synchronization of the disconnected UE based on the valid configuration. The unconnected UEs include idle and / or inactive UEs.

[0069] Here, the UE may be a mobile phone terminal that performs wireless communication using cellular mobile communication technology, etc. The base station may be a communication device in a cellular mobile communication system that provides an access network interface to the UE.

[0070] When a UE establishes a communication connection with an access network device such as a base station, the UE needs to perform downlink synchronization. The access network device may transmit a reference signal for the UE to perform downlink synchronization. Before transmitting the reference signal, the access network device may transmit a reference signal configuration indicating a physical resource to be used for the reference signal, and the UE receives the reference signal based on the reference signal configuration to perform downlink synchronization.

[0071] In one embodiment, the reference signal setting comprises: This includes signal configuration of a tracking reference signal (TRS) and / or a channel state information reference signal (CSI-RS). The CSI-RS may be used by the UE to obtain at least one parameter such as channel conditions, beam management, mobility management, rate matching, and the like.

[0072] Because the frequencies of the physical crystal oscillators in the base station and UE are slightly offset and cannot be perfectly matched, a phase offset occurs in the radio frequency carrier signal received by the UE. This appears as a phase rotation in the constellation diagram of the demodulated symbols received on the subcarriers. That is, the received modulation symbols are offset by a certain phase angle. This is due to the frequency offset accumulating over time. In this case, a tracking reference signal (TRS) is required to track the rotation phase of other data signals. The TRS is a multi-period CSI-RS, specifically, a NZP-CSI-RS in which one 4-port, three-CSI-RS density is located in two consecutive slots. The minimum spacing between two TRSs in a slot is four OFDM symbols in the time domain, and they are spaced four subcarriers apart in the frequency domain. The frequency and time errors can be estimated based on the TRS. By receiving data and compensating for these errors, the original modulation coordinate position for transmission can be restored.

[0073] In the related art, TRS and / or CSI-RS are only used for downlink synchronization of UEs in a connected state, whereas UEs in a non-connected state can also perform downlink synchronization using TRS and / or CSI-RS.

[0074] In the related art, a UE can perform downlink synchronization by receiving an SSB with three cycles, but the synchronization efficiency is low. Here, the UE can perform downlink synchronization using TRS and / or CSI-RS, and can achieve downlink synchronization with an SSB with fewer cycles (e.g., an SSB with one cycle).

[0075] The reference signal configuration may be a TRS and / or CSI-RS signal configuration configured by an access network device for a UE in a connected state, and a UE in a non-connected state can share the reference signal configuration and perform downlink synchronization using the TRS and / or CSI-RS. The reference signal configuration may be a TRS and / or CSI-RS signal configuration configured by an access network device for a UE in a connected state and a UE in a non-connected state. The reference signal configuration may be a TRS and / or CSI-RS signal configuration configured by an access network device for a UE in a non-connected state. A UE in a non-connected state can perform downlink synchronization using the TRS and / or CSI-RS based on the reference signal configuration configured for the UE.

[0076] The reference signal configuration of the reference signal may be sent by the access network device to the UE via downlink signaling, such as RRC signaling, when the UE is in a connected state. The access network device may send a valid configuration indicating whether the reference signal configuration can be used for downlink synchronization.

[0077] In one embodiment, the reference signal setting comprises: Physical layer resources and quasi-colocation (QCL) parameters; The physical layer resource includes one of the above. The reference signal configuration may include signal configurations of one or more TRS and / or CSI-RS. The physical layer resources may include time domain resources and frequency domain resources, etc. The QCL parameters may include a QCL type, etc.

[0078] The valid configuration may indicate at least whether a reference signal configuration is valid. The valid configuration may also indicate a valid reference signal configuration among a plurality of reference signal configurations, an invalid reference signal configuration, etc. The valid configuration may indicate some valid configuration content and / or some invalid configuration content in the reference signal configuration. For example, the valid configuration may indicate valid and invalid frequency domain resources in the reference signal configuration.

[0079] The access network device can transmit the valid configuration to the UE, and the UE can determine employable and non-employable reference signal configurations based on the valid configuration.

[0080] In one embodiment, the UE can perform downlink synchronization based on a reference signal configured by an available reference signal configuration.

[0081] In one embodiment, the access network device may convey the valid configuration in physical layer signaling and send it to the UE.

[0082] Here, the valid configuration may be explicitly or implicitly indicated in the physical layer signaling. For example, the access network device may indicate the valid configuration using at least one bit in the physical layer signaling. The access network device may also transmit predetermined physical layer signaling that implicitly indicates the valid configuration.

[0083] In this way, by using the valid configuration for a non-connected UE to determine the reference signal configuration for downlink synchronization, it is possible to indicate whether the reference signal configuration is to be used for synchronization according to actual needs, thereby improving the flexibility of using the reference signal configuration.

[0084] determining a reference signal configuration for downlink synchronization of an unconnected UE based on the valid configuration, determining that the reference signal configuration is valid in response to receiving the first configuration; and determining, in response to the second configuration being received, that the reference signal configuration is not valid. In embodiments of the present disclosure, the validity setting may be conveyed by any suitable signaling.

[0085] The valid setting may indicate whether a reference signal setting for a reference signal, such as TRS and / or CSI-RS, is valid. The valid setting may be a first setting or a second setting. The first setting indicates that the reference signal setting is valid, which indicates that the access network device transmits a reference signal based on the reference signal setting, e.g., the access network device transmits a reference signal using a physical resource configured by the reference signal setting. The UE performs downlink synchronization based on the TRS and / or CSI-RS configured by the reference signal setting. The second setting indicates that the reference signal setting is not valid, which indicates that the access network device does not transmit a reference signal based on the reference signal setting, e.g., the access network device does not transmit a reference signal using a physical resource configured by the reference signal setting. The UE cannot perform downlink synchronization based on the TRS and / or CSI-RS configured by the reference signal setting.

[0086] The valid setting can be a different value indicating whether the reference signal setting is valid or not. For example, "0" indicates that the reference signal setting is not valid, and "1" indicates that the reference signal setting is valid. Alternatively, "1" may indicate that the reference signal setting is not valid, and "0" may indicate that the reference signal setting is valid.

[0087] For example, an idle UE and / or an inactive UE may perform downlink synchronization via TRS and / or CSI-RS based on a reference signal configuration. If the effective configuration is a first configuration, it indicates that the reference signal configuration is effective, and after receiving the first configuration of the reference signal configuration, the UE may detect TRS and / or CSI-RS on the transmission resources configured by the reference signal configuration.

[0088] In one embodiment, receiving the valid configuration comprises: receiving a paging downlink control information (DCI) carrying the valid configuration; and receiving a pre-paging indication (PEI) associated with the valid configuration. The valid configuration may be carried by a paging DCI. The paging DCI may be used for scheduling paging messages. An access network device may carry the valid configuration in the paging DCI. For example, the valid configuration may occupy one or more bits of the paging DCI to indicate whether the reference signal configuration is valid.

[0089] The valid configuration may be associated with a PEI. The PEI is used to indicate to the UE whether there is a paging message for the UE at a Paging Occasion (PO). The valid configuration may be indicated by information associated with the PEI. For example, the valid configuration may be indicated by information carried by the PEI and / or signal feature information of the PEI.

[0090] The effective configuration based on physical layer signaling such as paging DCI and PEI is more flexible than MAC configuration and RRC configuration and can achieve dynamic configuration.

[0091] In one embodiment, the PEI is a PEI carried by a DCI, the DCI carrying the PEI further carrying the valid configuration; or The PEI signal includes a sequence-based PEI signal, the PEI signal being a physical layer signal, and the PEI signal has a corresponding relationship with the valid setting.

[0092] The PEI can occupy one or more bits of the DCI. The validity setting can be carried by the DCI that carries the PEI. For example, the validity setting may occupy one or more bits of the PEI, or the validity setting may occupy one or more bits in the DCI that are different from the PEI.

[0093] The PEI may be a physical layer signal. The PEI may indicate whether a paging message exists in the PO through a signal sequence. The PEI may indicate different valid configurations according to physical resources, for example, a first configuration or a second configuration according to different frequency domain resources, and may further indicate whether a reference signal configuration is valid.

[0094] For example, as shown in Table 1, an access network device such as a base station can indicate an active configuration to a UE by using either a paging DCI or a PEI, or can indicate an active configuration to a UE by using a paging DCI and a PEI. The base station can first configure whether to indicate an active configuration at the physical layer, i.e., whether to indicate an active configuration by using a paging DCI and / or a PEI. In Table 1, "base station configuration" means that an active configuration is indicated using the physical layer, and "no configuration" means that an active configuration is not indicated using the physical layer.

[0095] In one embodiment, receiving the valid configuration comprises: receiving a paging DCI indicating the first configuration; receiving the paging DCI indicating the second configuration; receiving a PEI indicating the first configuration; and receiving the PEI indicating the second configuration.

[0096] When a DCI is used to carry an effective configuration or when an effective configuration is associated with a PEI, the DCI or PEI may implicitly indicate the first configuration or the second configuration.

[0097] For example, there is only one case, such as the cases shown in sequence numbers 1 and 2 in Table 1, where a valid configuration is carried using a DCI and where the valid configuration is associated with a PEI. When a base station configuration carries a valid configuration using a DCI, the DCI can implicitly indicate the first configuration or the second configuration, and when a UE receives the DCI, it can determine whether the reference signal configuration is valid. Here, the DCI may be one or a type of DCI agreed upon in advance, such as a paging DCI. When a base station configuration and a valid configuration are associated with a PEI, the PEI can implicitly indicate the first configuration or the second configuration, and when a UE receives the PEI, it can determine whether the reference signal configuration is valid. Here, the PEI may be a pre-agreed PEI, such as a PEI using a predetermined physical transmission resource.

[0098] In this way, by the DCI or PEI implicitly indicating a valid setting, there is no need to change the DCI or PEI, and the amount of information in the DCI or PEI increases, improving communication efficiency.

[0099] In one embodiment, if the access network device transmits only the first configuration, the UE may determine that the current configuration is the second configuration if it does not receive the first configuration. If the access network device transmits only the second configuration, the UE may determine that the current configuration is the first configuration if it does not receive the second configuration.

[0100] As an example, the access network device may only transmit a DCI that implicitly indicates the first configuration, and if the UE does not receive the DCI, the UE may determine that the reference signal configuration is not valid, i.e., the UE may determine that the current configuration is the second configuration.

[0101] In one embodiment, the method further includes one of the following: In response to having at least two of the valid configurations, a validity indication is received, and based on the validity indication, the valid configuration of the received at least two valid configurations is determined.

[0102] Here, the valid configuration may be carried by different physical layer signaling, and the UE may receive multiple valid configurations carried by different physical layer signaling. For example, the UE may receive two valid configurations via the DCI and the PEI, respectively. Or, the UE may receive three valid configurations carried by three different physical layer signaling, respectively. The validity indication may indicate a valid one of the multiple valid configurations. The validity indication may indicate physical layer signaling associated with the valid valid configuration. For example, the validity indication may indicate that the valid configuration carried in the DCI is valid.

[0103] As an example, in response to having one valid configuration, the valid configuration is determined as the valid configuration by default. When the access network device is configured to carry a valid configuration using a DCI and to associate the valid configuration with a PEI, the access network device can transmit a validity indication to indicate that the valid configuration carried by the DCI or the valid configuration associated with the PEI is valid. When the UE simultaneously receives the valid configuration carried by the DCI and the valid configuration associated with the PEI, the access network device can determine the valid valid configuration based on the validity indication. This reduces judgment errors caused by the UE's inability to distinguish between valid and invalid valid configurations, and reduces the UE's misjudgment of whether a reference signal configuration is valid.

[0104] If the access network device is configured to carry a valid configuration using a DCI and the valid configuration is associated with a PEI, when the access network device carries a valid configuration by DCI, the UE determines that the valid configuration carried by the DCI is valid, and when the access network device indicates a valid configuration by PEI, the UE determines that the valid configuration associated with the PEI is valid.

[0105] In one embodiment, receiving the valid configuration includes receiving a system information block (SIB) carrying the valid configuration.

[0106] The access network device may convey a validity setting by higher layer signaling that indicates whether the reference signal setting is valid or not.

[0107] As an example, in the case shown in sequence number 4 in Table 1, the base station has not set the valid configuration carried by the DCI or the valid configuration associated with the PEI, and the base station can then carry the valid configuration through the SIB. The UE can receive the SIB and parse the valid configuration from the SIB.

[0108] In this way, the access network device can indicate the effective configuration by the physical layer and can carry the effective configuration by higher layer signaling, providing greater flexibility in transmitting the effective configuration.

[0109] Below, a specific example is provided in accordance with any of the above embodiments. 1. The base station configures a TRS / CSI-RS reference signal configuration for downlink time-frequency synchronization by the UE in idle state, and configures a valid configuration that indicates whether the reference signal configuration is valid via the physical layer. 2. As shown in Table 1, the base station can indicate the valid configuration to the UE by either the paging DCI or the PEI, or can indicate the valid configuration to the UE by the paging DCI and the PEI. The base station can first set whether to indicate the valid configuration using the physical layer, i.e., whether to indicate the valid configuration by the paging DCI and / or the PEI. In Table 1, "base station setting" means that the valid configuration is indicated using the physical layer, and "no setting" means that the valid configuration is not indicated using the physical layer. 3. The above PEI can be a DCI-based PEI or a sequence-based PEI. 4. In the above settings, since there is only one setting in sequence number 1 and sequence number 2, the valid setting may be omitted, i.e., the setting is valid. 5. For sequence number 4, the SIB method, i.e., upper layer method notification, can be used.

[0110] An embodiment of the present invention further provides an information transmission device applied to a wireless communication access network device, and as shown in FIG. 5, the information transmission device 100 comprises: a first transmitting module 110 configured to transmit a valid configuration for a disconnected user equipment (UE) to determine a reference signal configuration for downlink synchronization; The unconnected UEs include idle and / or inactive UEs.

[0111] In one embodiment, the validity setting is: a first setting indicating that the reference signal setting is valid; or A second setting indicates that the reference signal setting is not valid.

[0112] In one embodiment, the reference signal setting comprises: Physical layer resources and quasi-colocation (QCL) parameters; The physical layer resource includes one of the above.

[0113] In one embodiment, the valid configuration is carried by a paging downlink control information (DCI); and / or The validity setting is associated with a pre-paging instruction (PEI).

[0114] In one embodiment, the PEI is a PEI carried by a DCI, the DCI carrying the PEI further carrying the valid configuration; or The PEI signal includes a sequence-based PEI signal, the PEI signal being a physical layer signal, and the PEI signal has a corresponding relationship with the valid setting.

[0115] In one embodiment, the first transmitting module 110: a first sending sub-module 111 configured to send a DCI indicating the first configuration; a second transmitting sub-module 112 configured to transmit the DCI indicating the second configuration; a third sending sub-module 113 configured to send a PEI indicating the first configuration; and a fourth sending sub-module 114 configured to send the PEI indicating the second setting.

[0116] In one embodiment, the device comprises: a second transmitting module 120 configured to, in response to having at least two valid settings, transmit a validity indication indicating a valid valid setting among the at least two valid settings; and a first determination module 130 configured to, in response to having one of the valid settings, determine the corresponding valid setting as a valid setting by default.

[0117] In one embodiment, the first transmitting module 110 includes a fifth transmitting sub-module 115 configured to transmit a system information block (SIB) carrying the valid configuration.

[0118] In one embodiment, the reference signal setting comprises: This includes signal configuration of a tracking reference signal (TRS) and / or a channel state information reference signal (CSI-RS).

[0119] An embodiment of the present invention further provides an information transmission device applied to a UE in wireless communication. As shown in FIG. 6, the information transmission device 200 includes: a first receiving module 210 configured to receive a validity setting; and a second determining module 220 configured to determine a reference signal configuration for downlink synchronization of the UE in an unconnected state based on the valid configuration. The unconnected UEs include idle and / or inactive UEs.

[0120] In one embodiment, the valid configurations include a first configuration and a second configuration. The second determination module: a first determination sub-module configured to determine that the reference signal configuration is valid in response to receiving the first configuration; and a second determination sub-module configured to determine that the reference signal configuration is not valid in response to the second configuration being received.

[0121] In one embodiment, the reference signal setting comprises: Physical layer resources and quasi-colocation (QCL) parameters; The physical layer resource includes one of the above.

[0122] In one embodiment, the first receiving module 210: a first receiving sub-module 211 configured to receive paging downlink control information (DCI) carrying the valid configuration; and a second receiving sub-module 212 configured to receive a pre-paging indication (PEI) associated with the validity setting.

[0123] In one embodiment, the PEI is a PEI carried by a DCI, the DCI carrying the PEI further carrying the valid configuration; or The PEI signal includes a sequence-based PEI signal, the PEI signal being a physical layer signal, and the PEI signal has a corresponding relationship with the valid setting.

[0124] In one embodiment, the first receiving module 210: a third receiving sub-module 213 configured to receive a paging DCI indicating the first configuration; a fourth receiving sub-module 214 configured to receive the paging DCI indicating the second configuration; a fifth receiving sub-module 215 configured to receive a PEI indicating the first configuration; and a sixth receiving sub-module 216 configured to receive the PEI indicating the second setting.

[0125] In one embodiment, the device 200 comprises: a second receiving module 230 configured to receive a validity indication in response to having at least two of the valid configurations, and determine a valid configuration among the received at least two valid configurations based on the validity indication; and a third determination module 240 configured to, in response to having one of the valid settings, determine the valid setting as the valid setting by default.

[0126] In one embodiment, the first receiving module 210 includes a seventh receiving sub-module 217 configured to receive a system information block (SIB) carrying the valid configuration.

[0127] In one embodiment, the reference signal setting comprises: This includes signal configuration of a tracking reference signal (TRS) and / or a channel state information reference signal (CSI-RS).

[0128] In an exemplary embodiment, the first transmitting module 110, the second transmitting module 120, the first determining module 130, the first receiving module 210, the second determining module 220, the second receiving module 230, and the third determining module 240, etc., can be realized by one or more central processors (CPU, Central Processing Unit), graphics processing units (GPU, Graphics Processing Unit), baseband processors (BP, baseband processor), application specific integrated circuits (ASIC, Application Specific Integrated Circuit), DSP, programmable logic devices (PLD, Programmable Logic Device), complex programmable logic devices (CPLD, Complex Programmable Logic Device), field programmable gate array (FPGA), general-purpose processor, controller, microcontroller (MCU, Micro Controller Unit), microprocessor, or other electronic components, and used to perform the aforementioned methods.

[0129] 7 is a block diagram of a device 3000 used for information transmission according to an exemplary embodiment. For example, the device 3000 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.

[0130] Referring to FIG. 7 , the device 3000 may include one or more of a processing component 3002, a memory 3004, a power component 3006, a multimedia component 3008, an audio component 3010, an input / output (I / O) interface 3012, a sensor component 3014, and a communication component 3016.

[0131] The processing component 3002 typically controls the overall operation of the device 3000, such as operations related to display, phone calls, data communication, camera operation, and recording operation. The processing component 3002 may include one or more processors 3020 for executing instructions to complete all or some of the steps of the above methods. The processing component 3002 may also include one or more modules to facilitate interaction between the processing component 3002 and other components. For example, the processing component 3002 may include a multimedia module to facilitate interaction between the processing component 3002 and a multimedia component 3008.

[0132] Memory 3004 is configured to store various types of data to support the operation of device 3000. Examples of this data include instructions for any application programs or methods operating on device 3000, contact data, phone book data, messages, images, videos, etc. Memory 3004 may be implemented by any type of volatile or non-volatile storage device, or combination thereof, 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, or optical disk.

[0133] The power supply component 3006 provides power to the various components of the device 3000. The power supply component 3006 can include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the device 3000.

[0134] The multimedia component 3008 includes a screen that provides an output interface between the device 3000 and a user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to detect touches, slides, and gestures on the touch panel. The touch sensors can detect not only the boundaries of the touch or slide motion, but also the duration and pressure associated with the touch or slide motion. In some embodiments, the multimedia component 3008 includes one front camera and / or one rear camera. When the device 3000 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.

[0135] The audio component 3010 is configured to output and / or input audio signals. For example, the audio component 3010 includes one microphone (MIC). When the device 3000 is in an operation mode such as a call mode, a record mode, or a voice recognition mode, the microphone is configured to receive an external audio signal. The received audio signal is further stored in the memory 3004 or transmitted via the communication component 816. In some embodiments, the audio component 810 further includes a speaker for outputting the audio signal.

[0136] The I / O interface 3012 provides an interface between the processing component 3002 and a peripheral interface module, which may be a keyboard, a click wheel, buttons, etc. These buttons include, but are not limited to, a home button, volume buttons, a start button, and a lock button.

[0137] The sensor component 3014 includes one or more sensors to provide status assessments of various aspects of the device 3000. For example, the sensor component 3014 can detect the on / off state of the device 3000 and the relative position of the display and keypad components of the device 3000. The sensor component 3014 can also detect changes in the position of the device 3000 or a component of the device 3000, the presence or absence of user contact with the device 3000, the orientation and position or acceleration / deceleration of the device 3000, and temperature changes of the device 3000. The sensor component 3014 can include a proximity sensor configured to detect the presence or absence of an object in the vicinity in the absence of any physical contact. The sensor component 3014 can further include an optical sensor, such as a CMOS or CCD image sensor used in imaging applications. In some embodiments, the sensor component 3014 can further include an acceleration sensor, a gyro sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0138] The communication component 3016 is configured to facilitate wired or wireless communication between the device 3000 and other devices. The device 3000 can access a wireless network based on a communication standard, such as WiFi, 2G, or 3G, or a combination thereof. In an exemplary embodiment, the communication component 3016 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 3016 further includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, super wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0139] In an exemplary embodiment, the apparatus 3000 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 to perform the above methods.

[0140] In an exemplary embodiment, a non-transitory computer-readable storage medium containing instructions, such as a memory 3004 containing instructions, is provided, which can be executed by a processor 3020 of the apparatus 3000 to complete the method. 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.

[0141] Other embodiments of the present invention will be readily apparent to those skilled in the art after considering the specification and practicing the invention disclosed herein. This application is intended to cover any modifications, uses, or variations of the present invention, which modifications, uses, or variations follow the general principles of the embodiments of the present invention and include common general knowledge or customary technical means in the art that are not disclosed in the examples of this application. It is intended that the specification and examples be considered as exemplary only, with the true scope and spirit of the embodiments of the present invention being indicated by the following claims.

[0142] It should be understood that the present application is not limited to the exact configurations described above and illustrated in the drawings, and various modifications and variations can be made without departing from the scope thereof, which is limited only by the appended claims.

Claims

1. 1. A method of transmitting information performed by an access network device, comprising: a user equipment (UE) in an unconnected state transmitting a valid configuration for determining a reference signal configuration for downlink synchronization; The unconnected UEs include idle and / or inactive UEs; and further comprising transmitting a validity indication in response to having at least two valid configurations, wherein the at least two valid configurations are transmitted by different physical layer signaling, and the validity indication is used to indicate a valid valid configuration among the at least two valid configurations and a physical layer signaling associated with the valid valid configuration.

1. An information transmission method comprising:

2. The valid setting is: a first setting indicating that the reference signal setting is valid; or a second setting indicating that the reference signal setting is not valid; 2. The information transmission method according to claim 1,

3. The reference signal setting is Physical layer resources and quasi-co-location (QCL) parameters; the physical layer resources; 3. The information transmission method according to claim 2.

4. the valid configuration is carried by paging downlink control information (DCI); and / or The validity setting is associated with a Paging Advance Indicator (PEI).

3. The information transmission method according to claim 2.

5. The PEI is a PEI carried by a DCI, the DCI carrying the PEI further carrying the valid configuration; or a PEI signal based on the sequence, the PEI signal being a physical layer signal, the PEI signal having a corresponding relationship with the valid setting; 5. The information transmission method according to claim 4.

6. The step of transmitting the valid setting includes: transmitting a paging DCI indicating the first configuration; transmitting the paging DCI indicating the second configuration; transmitting a PEI indicating the first configuration; and transmitting the PEI indicating the second configuration; 3. The information transmission method according to claim 2.

7. and further comprising the step of, in response to having one of the valid settings, determining the corresponding valid setting as a valid setting by default.

2. The information transmission method according to claim 1,

8. transmitting the valid configuration includes transmitting a system information block (SIB) carrying the valid configuration.

2. The information transmission method according to claim 1,

9. The reference signal setting is including signal configuration of a tracking reference signal (TRS) and / or a channel state information reference signal (CSI-RS); 2. The information transmission method according to claim 1,

10. 1. An information transmission method performed by a user equipment (UE), comprising: receiving a valid configuration; receiving a validity indication in response to having at least two of the valid configurations, the at least two valid configurations being transmitted by different physical layer signaling, the validity indication being used to indicate the valid configuration in the at least two valid configurations and physical layer signaling associated with the valid valid configuration; determining a valid setting among the at least two received valid settings based on the validity indication; determining a reference signal configuration for downlink synchronization of the disconnected UE based on the valid configuration; The unconnected UEs include idle UEs and / or inactive UEs.

1. An information transmission method comprising:

11. the valid settings include a first setting and a second setting; determining a reference signal configuration for downlink synchronization of the disconnected UE based on the valid configuration, determining, in response to receiving the first configuration, that the reference signal configuration is valid; and determining, in response to the second configuration being received, that the reference signal configuration is not valid.

11. The information transmission method according to claim 10.

12. The reference signal setting is Physical layer resources and quasi-co-location (QCL) parameters; the physical layer resources; 12. The information transmission method according to claim 11.

13. The step of receiving a valid configuration includes: receiving a paging Downlink Control Information (DCI) carrying the valid configuration; and receiving a pre-paging indication (PEI) associated with the valid configuration; 12. The information transmission method according to claim 11.

14. The PEI is a PEI carried by a DCI, the DCI carrying the PEI further carrying the valid configuration; or a PEI signal based on the sequence, the PEI signal being a physical layer signal, the PEI signal having a corresponding relationship with the valid setting; 14. The information transmission method according to claim 13.

15. The step of receiving a valid configuration includes: receiving a paging DCI indicating the first configuration; receiving the paging DCI indicating the second configuration; receiving a PEI indicating the first configuration; and receiving the PEI indicating the second configuration; 12. The information transmission method according to claim 11.

16. and in response to having one valid setting, determining the valid setting as a valid setting by default.

11. The information transmission method according to claim 10.

17. The step of receiving a valid configuration includes: receiving a system information block (SIB) carrying the valid configuration; 11. The information transmission method according to claim 10.

18. The reference signal setting is including signal configuration of a tracking reference signal (TRS) and / or a channel state information reference signal (CSI-RS); 11. The information transmission method according to claim 10.

19. An information transmission device, A first transmitting module configured for a non-connected user equipment (UE) to transmit a valid configuration for determining a reference signal configuration for downlink synchronization; The unconnected UEs include idle and / or inactive UEs; the first transmitting module further transmits a validity indication in response to having at least two of the valid configurations, the at least two valid configurations being transmitted by different physical layer signaling, and the validity indication is used to indicate a valid valid configuration among the at least two valid configurations and physical layer signaling associated with the valid valid configuration. An information transmission device characterized by:

20. An information transmission device, a first receiving module configured to receive a valid setting and, in response to having at least two valid settings, receive a valid indication, wherein the at least two valid settings are transmitted by different physical layer signaling, and the valid indication is used to indicate a valid setting in the at least two valid settings and physical layer signaling associated with the valid setting; a second determination module configured to determine a valid valid setting among the at least two received valid settings based on the valid indication, and to determine a reference signal setting for downlink synchronization of the UE in an unconnected state based on the valid valid setting; The unconnected UEs include idle UEs and / or inactive UEs. An information transmission device characterized by:

21. a processor, a memory, and an executable program stored in the memory and executed by the processor; When the processor executes the executable program, the steps of the information transmission method according to any one of claims 1 to 9 are performed. A communication device characterized by:

22. a processor, a memory, and an executable program stored in the memory and executed by the processor; When the processor executes the executable program, the steps of the information transmission method according to any one of claims 10 to 18 are performed. A communication device characterized by:

23. A storage medium on which an executable program is stored, The executable program, when executed by a processor, implements the steps of the information transmission method according to any one of claims 1 to 9. A storage medium characterized by:

24. A storage medium on which an executable program is stored, The executable program, when executed by a processor, implements the steps of the information transmission method according to any one of claims 10 to 18. A storage medium characterized by:

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