Signal transmission method and device, terminal, base station and storage medium

Abstract

Embodiments of the present application provide a signal transmission method and device, a terminal, a base station and a storage medium. The method comprises: receiving target reference signal resources issued by a base station through preset signaling; and receiving a reference signal according to the target reference signal resources. The signal transmission method and device, the terminal, the base station and the storage medium provided by the embodiments of the present application configure reference signal resources for a terminal in a non-connected state through preset signaling by a network side, and the terminal receives a reference signal by using the configured reference signal resources, thereby improving system performance and reducing power consumption.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of communication, in particular to a signal transmission method and device, terminal, base station and storage medium. BACKGROUND

[0002] At present, in the 5th generation mobile communication (5G) new radio (NR) system, the working state of a terminal (User Equipment, UE) is divided into three types: idle state (RRC_IDLE Mode), inactive state (RRC_Inactive Mode) and connected state (RRC_Connected Mode).

[0003] In the prior art, some low-complexity NR UEs mainly work in the non-connected state (including idle state and inactive state), and the UE receives paging and system information (System Information, SI). Before the UE receives the paging information at the corresponding paging occasion (Paging Occasion, PO), it needs to receive the synchronization signal block (Synchronization Signal Block, SSB) to perform time / frequency tracking and automatic gain control (Automatic Gain Control, AGC) operations. The longer the time between the time of receiving the SSB and the PO, the worse the accuracy of the time / frequency tracking will deteriorate the paging reception performance. In order to obtain better time / frequency tracking performance, multiple SSBs are often needed to perform time / frequency tracking to improve the accuracy of the synchronization.

[0004] However, the existing technical solution needs multiple SSBs to perform time / frequency tracking for the UE in the non-connected state, which undoubtedly further increases the time of the UE waking up, thereby increasing the power consumption of the UE. SUMMARY

[0005] The embodiments of the present application provide a signal transmission method, device, terminal, base station and storage medium, which solve the defect that multiple SSBs need to perform time / frequency tracking in the prior art, improve the system performance, and reduce the power consumption.

[0006] In a first aspect, the embodiments of the present application provide a signal transmission method, comprising:

[0007] Receiving a target reference signal resource issued by a base station through a preset signaling;

[0008] Receiving a reference signal according to the target reference signal resource.

[0009] Optionally, according to a signal transmission method of an embodiment of the present invention, the preset signaling includes any one or a combination of the following: system information, random access response information, and paging information.

[0010] Optionally, in a signal transmission method according to an embodiment of the present invention, the target reference signal resource includes at least one scrambling code identification code.

[0011] Optionally, in a signal transmission method according to an embodiment of the present invention, the number of target reference signal resources is determined by the base station according to a first preset rule.

[0012] Optionally, according to a signal transmission method of an embodiment of the present invention, when the preset signaling is system information, the target reference signal resource transmitted by the receiving base station through the preset signaling specifically includes:

[0013] Receive the first reference signal resource set sent by the base station through system information, wherein the first reference signal resource set includes one or more reference signal resources;

[0014] The target reference signal resource is determined based on the first set of reference signal resources.

[0015] Optionally, in a signal transmission method according to an embodiment of the present invention, the system information is associated with the transmission content or with the transmission resources.

[0016] Optionally, according to a signal transmission method of an embodiment of the present invention, the step of determining the target reference signal resource based on the first reference signal resource set specifically includes:

[0017] The target reference signal resource is selected from the set of reference signal resources according to the second preset rule.

[0018] Optionally, according to a signal transmission method of an embodiment of the present invention, the step of selecting the target reference signal resource from the reference signal resource set according to a second preset rule specifically includes:

[0019] The number of target reference signal resources is determined based on a pre-obtained first threshold value; when the terminal's first bandwidth is less than the first threshold value, the target reference signal resources include multiple resources; when the terminal's first bandwidth is greater than or equal to the first threshold value, the target reference signal resources include one resource.

[0020] Or include:

[0021] At least one reference signal resource is selected from the target reference signal resources according to the pre-obtained second threshold value as the target reference signal resource, wherein the target reference signal resource is the resource whose signal quality is greater than the second threshold value when the terminal receives the reference signal;

[0022] Or it may also include:

[0023] Based on the first value N obtained in advance, at least one reference signal resource is selected from the target reference signal resources as the target reference signal resource. The target reference signal resources are the N resources with the best signal quality when the terminal receives the reference signal, or the N resources with the largest bandwidth when the terminal receives the reference signal.

[0024] Or it may also include:

[0025] At least one reference signal resource is selected from the target reference signal resources based on the pre-obtained third and fourth threshold values ​​as the target reference signal resource. The target reference signal resource is a resource whose bandwidth is greater than the third threshold value and whose signal quality is greater than the fourth threshold value when the terminal receives the reference signal.

[0026] Optionally, according to a signal transmission method of an embodiment of the present invention, when the preset signaling is system information, the target reference signal resource transmitted by the receiving base station through the preset signaling specifically includes:

[0027] The base station receives a first set of reference signal resources transmitted through a first system information, wherein the first set of reference signal resources includes one or more reference signal resources.

[0028] Receive the index value of the target reference signal resource sent by the base station through the second system information;

[0029] The target reference signal resource is selected from the first set of reference signal resources based on the index value.

[0030] Optionally, according to a signal transmission method of an embodiment of the present invention, the system information is sent by the base station after receiving the random access request information sent by the terminal.

[0031] Optionally, according to a signal transmission method of an embodiment of the present invention, when the preset signaling is random access response information and paging information, the target reference signal resource sent by the receiving base station through the preset signaling specifically includes:

[0032] The receiving base station sends a first set of reference signal resources through the random access response information, wherein the first set of reference signal resources includes one or more reference signal resources;

[0033] Receive the index value of the target reference signal resource sent by the base station through the paging information;

[0034] The target reference signal resource is selected from the first set of reference signal resources based on the index value.

[0035] Optionally, according to a signal transmission method of an embodiment of the present invention, when the preset signaling is random access response information and system information, the target reference signal resource sent by the receiving base station through the preset signaling specifically includes:

[0036] The receiving base station sends a first set of reference signal resources through the random access response information, wherein the first set of reference signal resources includes one or more reference signal resources;

[0037] Receive the index value of the target reference signal resource sent by the base station through the system information;

[0038] The target reference signal resource is selected from the first set of reference signal resources based on the index value.

[0039] Optionally, according to an embodiment of the signal transmission method of the present invention, after receiving the reference signal according to the target reference signal resource, the method further includes:

[0040] The system receives indication information sent by the base station through system information, paging information, or downlink control information, the indication information being used to indicate a change in the first reference signal resource set.

[0041] Optionally, in a signal transmission method according to an embodiment of the present invention, the first reference signal resource set is a subset of the second reference signal resource set, wherein the second reference signal resource set refers to the set of reference signal resources configured by the base station for a connected terminal;

[0042] When the first reference signal resource set changes and is no longer a subset of the second reference signal resource set, the reference signal received by the terminal based on the target reference signal resource is the reference signal that the base station continues to transmit based on the original configured resources; the original configured resources are resources configured in the first reference signal resource set or a subset of the first reference signal resource set.

[0043] Secondly, embodiments of the present invention also provide a signal transmission method, comprising:

[0044] The target reference signal resources are sent to the terminal through preset signaling;

[0045] The reference signal is sent to the terminal using the target reference signal resource.

[0046] Optionally, according to a signal transmission method of an embodiment of the present invention, the preset signaling includes any one or a combination of the following: system information, random access response information, and paging information.

[0047] Optionally, in a signal transmission method according to an embodiment of the present invention, the target reference signal resource includes at least one scrambling code identification code.

[0048] Optionally, according to a signal transmission method of an embodiment of the present invention, before sending the target reference signal resource to the terminal via preset signaling, the method further includes:

[0049] The number of target reference signal resources is determined according to a first preset rule.

[0050] Optionally, according to a signal transmission method of an embodiment of the present invention, when the preset signaling is system information, the step of sending target reference signal resources to the terminal through the preset signaling specifically includes:

[0051] The system sends a first set of reference signal resources to the terminal, so that the terminal can determine the target reference signal resource based on the first set of reference signal resources; the first set of reference signal resources includes one or more reference signal resources.

[0052] Optionally, in a signal transmission method according to an embodiment of the present invention, the system information is associated with the transmission content or with the transmission resources.

[0053] Optionally, according to a signal transmission method of an embodiment of the present invention, when the preset signaling is system information, the step of sending the target reference signal resource to the terminal through the preset signaling specifically includes:

[0054] The system sends a first set of reference signal resources to the terminal through the first system information. The first set of reference signal resources includes one or more reference signal resources.

[0055] The second system information sends the index value of the target reference signal resource to the terminal, so that the terminal can filter the target reference signal resource from the first reference signal resource set according to the index value.

[0056] Optionally, according to a signal transmission method of an embodiment of the present invention, before sending the target reference signal resource to the terminal via preset signaling, the method further includes:

[0057] Receive random access request information sent by the terminal.

[0058] Optionally, according to a signal transmission method of an embodiment of the present invention, when the preset signaling is random access response information and paging information, the step of sending target reference signal resources to the terminal through the preset signaling specifically includes:

[0059] The first reference signal resource set is sent to the terminal through the random access response information, and the first reference signal resource set includes one or more reference signal resources;

[0060] The paging information sends the index value of the target reference signal resource to the terminal, so that the terminal can select the target reference signal resource from the first set of reference signal resources based on the index value.

[0061] Optionally, according to a signal transmission method of an embodiment of the present invention, when the preset signaling is random access response information and system information, the step of sending target reference signal resources to the terminal through the preset signaling specifically includes:

[0062] The first reference signal resource set is sent to the terminal through the random access response information, and the first reference signal resource set includes one or more reference signal resources;

[0063] The system information sends the index value of the target reference signal resource to the terminal, so that the terminal can select the target reference signal resource from the first set of reference signal resources based on the index value.

[0064] Optionally, according to a signal transmission method of an embodiment of the present invention, after sending the reference signal to the terminal using the target reference signal resource, the method further includes:

[0065] Instruction information is sent to the terminal via system information, paging information, or downlink control information. The instruction information is used to indicate changes in the first reference signal resource set.

[0066] Optionally, in a signal transmission method according to an embodiment of the present invention, the first reference signal resource set is a subset of the second reference signal resource set, wherein the second reference signal resource set refers to the set of reference signal resources configured by the base station for a connected terminal;

[0067] When the first reference signal resource set changes and is no longer a subset of the second reference signal resource set, the reference signal received by the terminal based on the target reference signal resource is the reference signal that the base station continues to transmit based on the original configured resources; the original configured resources are resources configured in the first reference signal resource set or a subset of the first reference signal resource set.

[0068] Thirdly, embodiments of the present invention also provide a signal transmission device, comprising:

[0069] The first receiving module is used to receive target reference signal resources sent by the base station through preset signaling;

[0070] The second receiving module is used to receive a reference signal according to the target reference signal resource.

[0071] Fourthly, embodiments of the present invention also provide a signal transmission device, comprising:

[0072] The configuration module is used to send target reference signal resources to the terminal through preset signaling;

[0073] The transmitting module is used to transmit a reference signal to the terminal using the target reference signal resource.

[0074] Fifthly, embodiments of the present invention also provide a terminal, including a memory, a processor, and a program stored in the memory and executable on the processor, wherein the processor executes the program to perform the following steps:

[0075] Receive target reference signal resources sent by the base station through preset signaling;

[0076] The reference signal is received according to the target reference signal resource.

[0077] Optionally, in a terminal according to an embodiment of the present invention, the preset signaling includes any one or a combination of the following: system information, random access response information, and paging information.

[0078] Optionally, in a terminal according to an embodiment of the present invention, the target reference signal resource includes at least one scrambling code identification code.

[0079] Optionally, in a terminal according to an embodiment of the present invention, the number of target reference signal resources is determined by the base station according to a first preset rule.

[0080] Optionally, in a terminal according to an embodiment of the present invention, when the preset signaling is system information, the target reference signal resource transmitted by the receiving base station through the preset signaling specifically includes:

[0081] Receive the first reference signal resource set sent by the base station through system information, wherein the first reference signal resource set includes one or more reference signal resources;

[0082] The target reference signal resource is determined based on the first set of reference signal resources.

[0083] Optionally, in a terminal according to an embodiment of the present invention, the system information is associated with the transmitted content or with the transmitted resources.

[0084] Optionally, in a terminal according to an embodiment of the present invention, determining the target reference signal resource based on the first reference signal resource set specifically includes:

[0085] The target reference signal resource is selected from the set of reference signal resources according to the second preset rule.

[0086] Optionally, in a terminal according to an embodiment of the present invention, the step of filtering the target reference signal resource from the reference signal resource set according to a second preset rule specifically includes:

[0087] The number of target reference signal resources is determined based on a pre-obtained first threshold value; when the terminal's first bandwidth is less than the first threshold value, the target reference signal resources include multiple resources; when the terminal's first bandwidth is greater than or equal to the first threshold value, the target reference signal resources include one resource.

[0088] Or include:

[0089] At least one reference signal resource is selected from the target reference signal resources according to the pre-obtained second threshold value as the target reference signal resource, wherein the target reference signal resource is the resource whose signal quality is greater than the second threshold value when the terminal receives the reference signal;

[0090] Or it may also include:

[0091] Based on the first value N obtained in advance, at least one reference signal resource is selected from the target reference signal resources as the target reference signal resource. The target reference signal resources are the N resources with the best signal quality when the terminal receives the reference signal, or the N resources with the largest bandwidth when the terminal receives the reference signal.

[0092] Or it may also include:

[0093] At least one reference signal resource is selected from the target reference signal resources based on the pre-obtained third and fourth threshold values ​​as the target reference signal resource. The target reference signal resource is a resource whose bandwidth is greater than the third threshold value and whose signal quality is greater than the fourth threshold value when the terminal receives the reference signal.

[0094] Optionally, in a terminal according to an embodiment of the present invention, when the preset signaling is system information, the target reference signal resource transmitted by the receiving base station through the preset signaling specifically includes:

[0095] The base station receives a first set of reference signal resources transmitted through a first system information, wherein the first set of reference signal resources includes one or more reference signal resources.

[0096] Receive the index value of the target reference signal resource sent by the base station through the second system information;

[0097] The target reference signal resource is selected from the first set of reference signal resources based on the index value.

[0098] Optionally, in a terminal according to an embodiment of the present invention, the system information is sent by the base station after receiving the random access request information sent by the terminal.

[0099] Optionally, in a terminal according to an embodiment of the present invention, when the preset signaling is random access response information and paging information, the target reference signal resources sent by the receiving base station through the preset signaling specifically include:

[0100] The receiving base station sends a first set of reference signal resources through the random access response information, wherein the first set of reference signal resources includes one or more reference signal resources;

[0101] Receive the index value of the target reference signal resource sent by the base station through the paging information;

[0102] The target reference signal resource is selected from the first set of reference signal resources based on the index value.

[0103] Optionally, in a terminal according to an embodiment of the present invention, when the preset signaling is random access response information and system information, the target reference signal resource sent by the receiving base station through the preset signaling specifically includes:

[0104] The receiving base station sends a first set of reference signal resources through the random access response information, wherein the first set of reference signal resources includes one or more reference signal resources;

[0105] Receive the index value of the target reference signal resource sent by the base station through the system information;

[0106] The target reference signal resource is selected from the first set of reference signal resources based on the index value.

[0107] Optionally, in a terminal according to an embodiment of the present invention, after receiving the reference signal according to the target reference signal resource, the method further includes:

[0108] The system receives indication information sent by the base station through system information, paging information, or downlink control information, the indication information being used to indicate a change in the first reference signal resource set.

[0109] Optionally, in a terminal according to an embodiment of the present invention, the first reference signal resource set is a subset of the second reference signal resource set, wherein the second reference signal resource set refers to the set of reference signal resources configured by the base station for the connected terminal;

[0110] When the first reference signal resource set changes and is no longer a subset of the second reference signal resource set, the reference signal received by the terminal based on the target reference signal resource is the reference signal that the base station continues to transmit based on the original configured resources; the original configured resources are resources configured in the first reference signal resource set or a subset of the first reference signal resource set.

[0111] Sixthly, embodiments of the present invention also provide a base station, including a memory, a processor, and a program stored in the memory and executable on the processor, wherein the processor executes the program to perform the following steps:

[0112] The target reference signal resources are sent to the terminal through preset signaling;

[0113] The reference signal is sent to the terminal using the target reference signal resource.

[0114] Optionally, in a base station according to an embodiment of the present invention, the preset signaling includes any one or a combination of the following: system information, random access response information, and paging information.

[0115] Optionally, in a base station according to an embodiment of the present invention, the target reference signal resource includes at least one scrambling code identification code.

[0116] Optionally, according to a base station of an embodiment of the present invention, before transmitting the target reference signal resource to the terminal via preset signaling, the method further includes:

[0117] The number of target reference signal resources is determined according to a first preset rule.

[0118] Optionally, according to a base station of an embodiment of the present invention, when the preset signaling is system information, the step of sending target reference signal resources to the terminal through the preset signaling specifically includes:

[0119] The system sends a first set of reference signal resources to the terminal, so that the terminal can determine the target reference signal resource based on the first set of reference signal resources; the first set of reference signal resources includes one or more reference signal resources.

[0120] Optionally, in a base station according to an embodiment of the present invention, the system information is associated with transmission content or with transmission resources.

[0121] Optionally, according to a base station of an embodiment of the present invention, when the preset signaling is system information, the step of sending target reference signal resources to the terminal through the preset signaling specifically includes:

[0122] The system sends a first set of reference signal resources to the terminal through the first system information. The first set of reference signal resources includes one or more reference signal resources.

[0123] The second system information sends the index value of the target reference signal resource to the terminal, so that the terminal can filter the target reference signal resource from the first reference signal resource set according to the index value.

[0124] Optionally, according to a base station of an embodiment of the present invention, before transmitting the target reference signal resource to the terminal via preset signaling, the method further includes:

[0125] Receive random access request information sent by the terminal.

[0126] Optionally, according to a base station of an embodiment of the present invention, when the preset signaling is random access response information and paging information, the step of sending target reference signal resources to the terminal through the preset signaling specifically includes:

[0127] The first reference signal resource set is sent to the terminal through the random access response information, and the first reference signal resource set includes one or more reference signal resources;

[0128] The paging information sends the index value of the target reference signal resource to the terminal, so that the terminal can select the target reference signal resource from the first set of reference signal resources based on the index value.

[0129] Optionally, according to a base station of an embodiment of the present invention, when the preset signaling is random access response information and system information, the step of sending target reference signal resources to the terminal through the preset signaling specifically includes:

[0130] The first reference signal resource set is sent to the terminal through the random access response information, and the first reference signal resource set includes one or more reference signal resources;

[0131] The system information sends the index value of the target reference signal resource to the terminal, so that the terminal can select the target reference signal resource from the first set of reference signal resources based on the index value.

[0132] Optionally, according to a base station of an embodiment of the present invention, after transmitting the reference signal to the terminal using the target reference signal resource, the method further includes:

[0133] Instruction information is sent to the terminal via system information, paging information, or downlink control information. The instruction information is used to indicate changes in the first reference signal resource set.

[0134] Optionally, in a base station according to an embodiment of the present invention, the first reference signal resource set is a subset of the second reference signal resource set, wherein the second reference signal resource set refers to the set of reference signal resources configured by the base station for a connected terminal;

[0135] When the first reference signal resource set changes and is no longer a subset of the second reference signal resource set, the reference signal received by the terminal based on the target reference signal resource is the reference signal that the base station continues to transmit based on the original configured resources; the original configured resources are resources configured in the first reference signal resource set or a subset of the first reference signal resource set.

[0136] In a seventh aspect, embodiments of the present invention also provide a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the signal transmission method as described above.

[0137] The signal transmission method, apparatus, terminal, base station, and storage medium provided in this invention allow the network side to configure reference signal resources for a non-connected terminal through preset signaling. The terminal then uses the configured reference signal resources to receive reference signals, thereby improving system performance and reducing power consumption. Attached Figure Description

[0138] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0139] Figure 1 This is a schematic diagram of the discontinuous reception principle;

[0140] Figure 2 This is a schematic diagram of the Paging reception principle based on SSB;

[0141] Figure 3 This is one of the schematic diagrams of a signal transmission method provided in an embodiment of the present invention;

[0142] Figure 4 A schematic diagram illustrating the request and configuration of a reference signal resource set based on PRACH, provided for embodiments of the present invention;

[0143] Figure 5 This is a second schematic diagram of a signal transmission method provided in an embodiment of the present invention;

[0144] Figure 6 One of the schematic diagrams of a signal transmission device provided in an embodiment of the present invention;

[0145] Figure 7 A second schematic diagram of a signal transmission device provided in an embodiment of the present invention;

[0146] Figure 8 This is a schematic diagram of the structure of a mobile terminal provided in an embodiment of the present invention;

[0147] Figure 9 This is a schematic diagram of the structure of a mobile terminal provided in another embodiment of the present invention;

[0148] Figure 10 This is a schematic diagram of the structure of a base station provided in an embodiment of the present invention. Detailed Implementation

[0149] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0150] In 5G NR systems, power-saving design of the UE becomes essential, primarily because 5G NR systems support greater bandwidth, higher throughput, and more complex services and their corresponding more complex processing technologies. Power-saving optimizations can reduce terminal power consumption, extend battery life, and thus improve the user experience, making them crucial for the industrialization of 5G.

[0151] In 5G NR systems, UEs currently operate in three states: RRC_IDLE Mode, RRC_Inactive Mode, and RRC_Connected Mode. Only UEs in RRC_Connected Mode are allowed to detect relevant Physical Downlink Control Channel (PDCCH), such as PDCCH scrambled with Cell Radio Network Temporary Identity (C-RNTI). Given that the power consumption of the NR terminal in RRC_Connected Mode has a decisive impact on system power consumption, NRRel-16 has standardized power saving for connected UEs. In connected mode, UEs need to continuously listen to the PDCCH (e.g., with C-RNTI scrambling) to obtain information transmitted on the Physical Downlink Shared Channel (PDSCH). However, packet-based data streams are typically bursty, with data transmission occurring for a period followed by a longer period without data transmission. Continuous PDCCH listening inevitably leads to rapid power consumption for the UE. Therefore, when there is no data transmission, power consumption can be reduced by stopping the reception of PDCCH (which will stop PDCCH blind detection). Thus, 3GPP's design achieves power saving through the Discontinuous Reception (DRX) mechanism.

[0152] Figure 1 This is a schematic diagram of the discontinuous reception principle, such as... Figure 1 As shown, during the DRX cycle, the UE only monitors the PDCCH during the duration (Onduration / DRX ON). During the non-duration period (Opportunity for DRX), i.e., during the DRX off period, the UE does not listen to the PDCCH to reduce power consumption, i.e., the UE enters sleep mode.

[0153] Before DRX ON, NR Rel-16 introduces a group common PDCCH as a power-saving signal. This PDCCH is transmitted during DRX OFF and scrambled with a Power Saving Radio Network Temporary Identity (PS-RNTI). Only if the power-saving signal carries a UE wake-up indication will the UE wake up the receiver in the subsequent DRX cycle; otherwise, the NR Rel-16 UE will continue to sleep.

[0154] For UEs in RRC_IDLE / RRC_Inactive Mode, the base station does not know which base station the UE is camped on. If the UE is in the TA (tracking area) / RNA (RAN-based Notification Area), the base station or core network will trigger a paging signal to wake up the UE to enter RRC_Connected Mode to receive data, or to receive system information updates scrambled by SI-RNTI (System information-RNTI).

[0155] For NR systems, power saving and reception robustness optimization in RRC_IDLE / RRC_Inactive Mode are also important. Low-complexity NR terminals, such as smart wearable devices or sensor devices, primarily operate in RRC_IDLE / RRC_Inactive Mode and have more stringent power saving requirements than ordinary NR terminals. For UEs operating in RRC_IDLE / RRC_Inactive Mode for extended periods, the UE will receive paging and System Information (SI) messages.

[0156] Figure 2 This is a schematic diagram of the Paging reception principle based on SSB, such as... Figure 2 As shown, before receiving paging information at the corresponding paging Occasion (PO), the terminal needs to receive the SSB to perform time / frequency tracking and AGC operations. If the SSB is far from the PO, the accuracy of time / frequency tracking (T / F tracking) will deteriorate the paging reception performance. On the other hand, if the SSB is far from the PO, the terminal cannot sleep to save power after receiving the SSB, resulting in increased power consumption. Moreover, in order to obtain better T / F tracking performance, considering that the PSS / SSS in the SSB only occupies 12 PRBs, in practice, multiple SSBs are often needed to perform T / F tracking to improve the accuracy of fine synchronization. This will undoubtedly further increase the terminal's wake-up time, thereby increasing the terminal's power consumption.

[0157] Besides paging and SI, the future evolution of the NR standard is considering introducing a multimedia broadcast multicast system similar to LTE. This multimedia broadcast multicast system transmits periodically in RRC-idle mode, requiring the UE to first detect and schedule DCI. However, its T / F tracking operation is based on SSB operation, similar to paging, because the stand-alone (SA) NR system does not have the common reference signal CRS in the LTE system. Therefore, it has the same power consumption and reception accuracy issues as paging operation.

[0158] In Active Time of connection mode, the base station also configures various reference signals (RS) for the UE. The RS may include CSI-RS for channel tracking (at least CSI-RS for tracking and / or PT-RS: Phase-tracking reference signal in the NR standard), CSI-RS for mobility measurement (referred to as CSI-RS for mobility in NR), and CSI-RS for channel measurement reporting. For RRC-connected UEs with DRX (Discontinuous Reception) configured, the NR standard stipulates that the UE can only measure CSI-RS for mobility during the Active Time (DRX ON cycle). For CSI-RS used for CSI measurement reporting, the NR standard specifies that the nearest CSI-RS measurement opportunity must be within the Active Time, and CSI measurement results cannot be reported during DRX OFF. Whether CSI-RS for tracking (TRS) is received during DRX OFF depends on the UE implementation. The base station can configure periodic TRS for the UE, and the base station may still send this TRS during the DRX OFF cycle. Whether the UE receives this TRS for fine synchronization depends on the UE's own implementation algorithm. For UEs in RRC_IDLE / RRC_Inactive Mode, the base station does not know which cell the UE is camped on, and there is no dedicated RRC signaling similar to the connected state. Therefore, the current NR standard cannot provide the aforementioned RS for idle / inactive Mode UEs, and the UE cannot utilize these RS to improve system performance or reduce power consumption.

[0159] Currently, 3GPP has not yet provided any solutions on how to improve reception performance or save power for UEs in RRC_IDLE / RRC_Inactive Mode of NR systems.

[0160] The main objective of this invention is to design a reference signal discovery mechanism and its transmission method suitable for NR systems in RRC-Idle / inactive Mode, thereby reducing the power consumption of NR system UEs.

[0161] Figure 3 This is one of the schematic diagrams of a signal transmission method provided in an embodiment of the present invention, such as... Figure 3 As shown, this embodiment of the invention provides a signal transmission method, the execution subject of which can be a terminal. The method includes:

[0162] Step 301: Receive the target reference signal resources sent by the base station through preset signaling.

[0163] Specifically, the base station sends target reference signal resources to the terminal through preset signaling. The terminal receives the target reference signal resources sent by the base station through preset signaling.

[0164] The preset signaling can be dedicated signaling, such as RRC signaling, or it can be non-dedicated signaling. Non-dedicated signaling refers to signaling that is not specifically used for configuring reference signal resources. The preset signaling can also be broadcast signaling or multicast signaling, etc.

[0165] For example, the preset signaling includes any one or a combination of the following: system information, random access response information, and paging information.

[0166] The target reference signal resource is the resource configured by the base station for the terminal to receive reference signals. The content of the target reference signal resource can be configured according to the specific application scenario, and may include time / frequency / space / code resources for receiving reference signals.

[0167] The number of target reference signal resources can be determined by the base station according to preset rules based on the actual application scenario.

[0168] Step 302: Receive the reference signal according to the target reference signal resource.

[0169] Specifically, after the base station configures the target reference signal resources for the terminal, it uses these target reference signal resources to send a reference signal to the terminal.

[0170] After receiving the target reference signal resource, the terminal uses the target reference signal resource to receive the reference signal sent by the base station.

[0171] The content of the reference signal can be configured according to the actual application, and is not limited here.

[0172] The signal transmission method provided in this embodiment of the invention allows the network side to configure reference signal resources for terminals in a non-connected state via preset signaling. The terminals then use the configured reference signal resources to receive reference signals, thereby improving system performance and reducing power consumption.

[0173] Based on any of the above embodiments, the preset signaling includes any one or a combination of the following: system information, random access response information, and paging information.

[0174] Specifically, the preset signaling can be dedicated signaling, such as RRC signaling, or it can be non-dedicated signaling, which refers to signaling that is not specifically used for configuring reference signal resources. The preset signaling can also be broadcast signaling or multicast signaling, etc.

[0175] In an embodiment of the present invention, one optional approach is that the preset signaling includes any one or a combination of the following: system information, random access response information, and paging information.

[0176] The signal transmission method provided in this embodiment of the invention includes preset signaling comprising any one or a combination of the following: system information, random access response information, and paging information, thereby improving system performance and reducing signaling overhead.

[0177] Based on any of the above embodiments, the target reference signal resource includes at least one scrambling code identification code.

[0178] Specifically, in this embodiment of the invention, the target reference signal resource configured by the base station for the terminal is a resource pool. The target reference signal resource includes one or more reference signal resources (or "reference signal resource set"). The number of target reference signal resources can be determined by the base station according to preset rules based on the actual application scenario.

[0179] Each reference signal resource contains at least one scrambling code ID. This scrambling code ID is used to generate the initial sequence for the pseudo-random sequence corresponding to the reference signal. Generally, the base station will assign the same scrambling code ID to one or a group of terminals.

[0180] In addition, each reference signal resource preferably also includes one of the following information: the period of the reference signal, the pattern of the reference signal in each period, i.e., the position in each period, including the position and number of slots occupied in each period, the time-frequency resources mapped by the reference signal in each slot, the QCL (Quasi Co-Location) information of the reference signal, which is mainly used to identify the beam direction of the reference signal, etc. Preferably, the reference signal is quasi-co-located with a specific SSB, i.e., associated with a specific SSB.

[0181] The signal transmission method provided in this embodiment of the invention includes at least one scrambling code identification code in the target reference signal resource, which further improves system performance.

[0182] Based on any of the above embodiments, the number of target reference signal resources is determined by the base station according to a first preset rule.

[0183] Specifically, in this embodiment of the invention, the number of target reference signal resources is determined by the base station according to a first preset rule.

[0184] A method for configuring reference signal resource sets for terminals in RRC idle / inactive mode: The base station configures a first number of reference signal resource sets, and the terminal receives reference signals on a second number of reference signal resource sets, wherein the second number is less than or equal to the first number.

[0185] The base station determines the number of configured reference signal resource sets according to predetermined rules. For example, the base station can determine the number of reference resources based on a predefined third quantity, such as 52 or 64 PRBs. Ideally, the bandwidth occupied by the first quantity of reference signal resource sets should be greater than or equal to the third quantity. For instance, since the bandwidth of idle / inactive mode terminals is relatively small, one reference signal resource cannot guarantee that its bandwidth is greater than the third quantity. Therefore, the base station can use the minimum number of reference resources required to make the bandwidth of the reference signal resource set greater than the third quantity as the lower limit of the first quantity, or as the value of the first quantity. Of course, the above method for determining the number of reference signal resources on the base station side is preferably applicable only to a single-beam scenario. Under different transmission beams, the method for determining the number of reference signals by the base station can be similar to the above. However, if the time-domain interval of the reference signal resources for multiple beams is greater than the beam switching time, it is possible that the base station configures multiple reference signals for the terminal corresponding to different beams.

[0186] The signal transmission method provided in this embodiment of the invention further reduces signaling overhead by determining the number of target reference signal resources by the base station according to a first preset rule.

[0187] Based on any of the above embodiments, when the preset signaling is system information, the target reference signal resources transmitted by the receiving base station through the preset signaling specifically include:

[0188] Receive the first reference signal resource set sent by the base station through system information, wherein the first reference signal resource set includes one or more reference signal resources;

[0189] The target reference signal resource is determined based on the first set of reference signal resources.

[0190] Specifically, NR system information is broadcast within a cell and includes the Master Information Block (MIB) and its System Information Block (SIB). The SIB is divided into SIB1 and other system information (other SIBs) (currently, the NR protocol includes SIB2-SIB9), with SIB1 also known as RMSI (Remaining Minimum SI).

[0191] The base station uses System Information Blocks (SIBs) to configure a set of candidate reference signals for terminals in RRC idle mode. Preferably, the base station configures a dedicated SIB for reference signals in idle / inactive mode, such as a first System Information Block (SIBx), x>=10, which is specifically used for configuring reference signals that UEs can use in idle / inactive mode.

[0192] In this embodiment of the invention, when the preset signaling is system information, the specific steps for receiving the target reference signal resources sent by the base station through the preset signaling are as follows:

[0193] First, the system receives a first set of reference signal resources transmitted by the base station through system information. This first set of reference signal resources includes one or more reference signal resources.

[0194] Then, the target reference signal resource is determined based on the first set of reference signal resources.

[0195] The signal transmission method provided in this embodiment of the invention further reduces signaling overhead by configuring reference signal resources for the terminal using system information.

[0196] Based on any of the above embodiments, the system information is associated with the transmitted content or with the transmitted resources.

[0197] Specifically, in this embodiment of the invention, the system information can be associated with the transmitted content. For example, the reference signal resource set configuration corresponding to the multimedia broadcast multicast service transmitted by RRCidle / inactive is indicated by the second system information block SIBy, while the reference signal resource set configuration corresponding to other transmissions such as paging is indicated by SIBx. The reference signal resource set configuration will not be distinguished in the following description, and SIBx will be used as an example.

[0198] In addition to the content being associated with system information blocks, the aforementioned optional base station can configure a dedicated SIB for reference signal resources in idle / inactive mode for the terminal. This SIB can be associated with transmission resources. The base station uses the first system information block to configure reference signals available to the UE in idle / inactive mode for the first resource, and the base station uses the second information block to configure reference signals available to the UE in idle / inactive mode for the second resource. For example, the base station uses the first system information block SIBx to configure reference signals available to the UE in idle / inactive mode for the initial band width part (BWP); or the base station uses the first system information block SIBx to configure reference signals available to the UE in idle / inactive mode for CORESET#0 (CORESET: Control Resource Set); or the base station uses the second system information block SIBy to configure reference signals available to the UE in idle / inactive mode for dedicated resources for transmitting multimedia broadcast services; or the base station uses the second system information block SIBy to configure reference signals available to the UE in idle / inactive mode for dedicated resources for transmitting multimedia multicast services.

[0199] The signal transmission method provided in this embodiment of the invention associates system information with the transmission content or with the transmission resources, thereby further improving system performance.

[0200] Based on any of the above embodiments, determining the target reference signal resource according to the first reference signal resource set specifically includes:

[0201] The target reference signal resource is selected from the set of reference signal resources according to the second preset rule.

[0202] Specifically, in this embodiment of the invention, the specific steps by which the terminal determines the target reference signal resource based on the first reference signal resource set are as follows:

[0203] The terminal selects the target reference signal resource from the reference signal resource set according to the second preset rule.

[0204] The second preset rule is related to the terminal's first bandwidth, the signal quality when the terminal receives the reference signal, and the bandwidth when the terminal receives the reference signal.

[0205] The terminal's primary bandwidth can be the active bandwidth, the configured bandwidth, or the minimum of both. This active bandwidth can include at least the initial BWP or CORSET#0 bandwidth.

[0206] The signal transmission method provided in this embodiment of the invention allows the terminal to select reference signal resources from the reference signal resource set according to a second preset rule, choose the best resource to receive the reference signal, and ensure reception quality.

[0207] Based on any of the above embodiments, the step of selecting the target reference signal resource from the reference signal resource set according to the second preset rule specifically includes:

[0208] The number of target reference signal resources is determined based on a pre-obtained first threshold value; when the terminal's first bandwidth is less than the first threshold value, the target reference signal resources include multiple resources; when the terminal's first bandwidth is greater than or equal to the first threshold value, the target reference signal resources include one resource.

[0209] Or include:

[0210] At least one reference signal resource is selected from the target reference signal resources according to the pre-obtained second threshold value as the target reference signal resource, wherein the target reference signal resource is the resource whose signal quality is greater than the second threshold value when the terminal receives the reference signal;

[0211] Or it may also include:

[0212] Based on the first value N obtained in advance, at least one reference signal resource is selected from the target reference signal resources as the target reference signal resource. The target reference signal resources are the N resources with the best signal quality when the terminal receives the reference signal, or the N resources with the largest bandwidth when the terminal receives the reference signal.

[0213] Or it may also include:

[0214] At least one reference signal resource is selected from the target reference signal resources based on the pre-obtained third and fourth threshold values ​​as the target reference signal resource. The target reference signal resource is a resource whose bandwidth is greater than the third threshold value and whose signal quality is greater than the fourth threshold value when the terminal receives the reference signal.

[0215] Specifically, in this embodiment of the invention, the terminal receives reference signals of all resources on the aforementioned reference signal resource set or a subset of the resource set, or receives reference signals corresponding to a portion of the transmitted resources according to a preset rule.

[0216] For example, the UE receives the corresponding RS on at least one RS resource indicated by the base station according to a preset or base station-notified first threshold value. For example, the first threshold value corresponds to the reference signal frequency domain resource bandwidth parameter. The first threshold value can be set to 52 PRBs. When the terminal's first bandwidth in idle / inactive mode is less than 52 PRBs, the terminal can receive one or more RS resources configured by the base station. When the terminal's first bandwidth is greater than 52 PRBs, the terminal only receives the RS signal corresponding to one of the RS resources. This is because Rel-15 evaluation shows that TRS can only guarantee reception performance when it occupies 52 PRBs. However, the terminal occupies a smaller bandwidth in idle / inactive mode, which is often less than 52 PRBs. Therefore, this method is beneficial to ensure the terminal's reception performance.

[0217] The terminal's primary bandwidth can be the active bandwidth, the configured bandwidth, or the minimum of both. This active bandwidth can include at least the initial BWP or CORSET#0 bandwidth.

[0218] Another example of the base station notifying the first threshold value is that the first threshold value can also include time domain resource information. The time domain resource information can be a time domain gap value. For example, when the terminal receives reference signal resources from different beams, it must ensure that the minimum distance in the time domain between the reference signal resource sets corresponding to different beams is greater than the pre-agreed time domain gap value. The advantage of this is that the terminal can better receive the reference signal resource sets sent by different beams.

[0219] The base station can also receive corresponding RS on at least one RS resource indicated by the base station according to a preset or base station-notified second threshold value. The second threshold value can be a measure of signal reception quality, such as RSRP / RSRQ / RSSI, etc. Preferably, the terminal can detect whether the signal quality of the RS at the corresponding resource location is greater than the threshold value. If it is greater than the threshold value, the terminal performs operations such as channel tracking based on the RS, and the terminal only receives RS values ​​greater than the threshold value. This is because, unlike the base station which must send the RS after configuring the reference signal for the connected UE using dedicated signaling, the reference signal resource configured by the base station through the SIB is preferably the resource configured by the base station for the connected state. The RS resource configured by the base station for the connected UE can be UE-specific. Once the terminal finishes transmitting the current data, the terminal enters the power-saving idle / inactive mode. At this time, the base station may not continue to send the reference signal corresponding to the UE in the connected state. However, since the SIB update cycle is relatively large, the SIB may not have time to update the RS configuration, so the RS resource may not exist when the terminal actually receives it. The advantage of this scheme is that the base station configures a candidate resource pool for idle / inactive mode terminals, providing the terminal with more resource choices. The terminal can select the best receiving RS to ensure reception quality. The cost is that the terminal needs to detect multiple RSs, increasing power consumption. The terminal also selects the reference signal resource to be received from the multiple RS resources notified by the base station according to preset reception rules.

[0220] The reception process can also be preset. For example, the base station and the terminal can agree that the terminal will only receive the set of RSs with the best reception quality, or the top 4 with the widest bandwidth, or the set of RS resources that meet the conditions of having a reception bandwidth greater than a certain threshold and a reception quality that meets the preset conditions.

[0221] The signal transmission method provided in this embodiment of the invention allows the terminal to filter reference signal resources based on factors such as the first bandwidth, the signal quality when the terminal receives the reference signal, and the bandwidth when the terminal receives the reference signal, and select the best resource to receive the reference signal, thereby ensuring reception quality.

[0222] Based on any of the above embodiments, when the preset signaling is system information, the target reference signal resources transmitted by the receiving base station through the preset signaling specifically include:

[0223] The base station receives a first set of reference signal resources transmitted through a first system information, wherein the first set of reference signal resources includes one or more reference signal resources.

[0224] Receive the index value of the target reference signal resource sent by the base station through the second system information;

[0225] The target reference signal resource is selected from the first set of reference signal resources based on the index value.

[0226] Specifically, in this embodiment of the invention, reference signal resources are configured for the idle / inactive mode terminal through two levels of signaling.

[0227] First, the base station receives a first set of reference signal resources transmitted through the first system information. The first set of reference signal resources includes one or more reference signal resources.

[0228] Then, the index value of the target reference signal resource is received by the base station through the second system information.

[0229] Finally, the target reference signal resource is selected from the first reference signal resource set based on the index value.

[0230] For example, the base station uses the Master Information Block (MIB) and System Information Block (SIB) to instruct the terminal in RRC idle / inactive mode to configure the reference signal resource set information through two levels of signaling. Preferably, the base station uses a dedicated SIB, such as SIBx, where x>=10, as the first signaling to configure the reference signal resource set for the terminal in RRC idle / inactive mode, and periodically notifies the terminal through SIBx. Preferably, the base station uses a 1-bit reserved bit b0 in the MIB or SIB1 as the second signaling to notify the terminal whether the reference signal resource set configured in the aforementioned SIBx has changed. For example, b0=1 indicates that the most recent reference signal resource set configured in SIBx is still effective, while b0=0 indicates that the reference signal resource set configured in SIBx has changed or is no longer effective, and the terminal can no longer use the reference signals configured in the current SIBx configuration. In this scheme, the MIB (or SIB1) is preferably transmitted with a shorter period, such as 80ms, while the SIBx is transmitted with a longer period, such as 640ms. Its advantages include significantly reducing the signaling overhead of the system information configuration reference signal resource set, and enabling the terminal to obtain accurate information about the configuration of the reference signal resource set more timely.

[0231] The other two signaling indication methods involve the base station configuring a preset reference signal resource set via the first signaling SIBx. This resource set contains N reference signal resource sets, such as N=64, with indices of 0, 1, 2, ..., N-1. The base station then notifies the terminal of the index of the specific reference signal resource set to be used via the second signaling, such as SIB1. Furthermore, the base station can carry the index of the reference signal set currently used by the terminal in the SIB. This reference signal resource set is an element of the reference signal resource set configured in the aforementioned RAR. For example, this index can be expressed using 6 bits. A preferred scheme is to transmit SIB1 with a shorter period, such as 160ms, while SIBx transmits with a longer period, such as 10ms, or does not transmit unless a terminal request is received.

[0232] The signal transmission method provided in this embodiment of the invention can significantly reduce system message signaling overhead by configuring reference signal resources for the terminal through two-level system information.

[0233] Based on any of the above embodiments, the system information is sent by the base station after receiving the random access request information sent by the terminal.

[0234] Specifically, in this embodiment of the invention, the system information is sent by the base station after receiving the random access request information sent by the terminal.

[0235] The base station configures dedicated PRACH resources for the terminal, including a preamble sequence and its RACH timing (RO). RO, defined in the NR standard, is the time-frequency resource for transmitting the preamble using a specific beam. This dedicated PRACH resource is associated with a set of reference signal resources configured for terminals in RRC idle / inactive mode. Terminals in RRC connected / inactive mode transmit a dedicated preamble sequence on the aforementioned dedicated PRACH resource. Only after the base station receives the PRACH request from the terminal will the network side transmit the SIBx within the corresponding transmission time window. The base station does not transmit the SIBx until it receives a PRACH request from the terminal.

[0236] For example, the base station may begin periodically transmitting the SIBx configured with the reference signal transmission resource set only after receiving the PRACH request, or the base station may transmit the SIBx within an agreed time window after receiving the PRACH request, and cease transmitting the SIBx outside the time window. This scheme eliminates the need for the base station to periodically transmit reference signal resource configuration information before receiving a terminal request, and avoids the base station continuously using the SIB periodically to transmit terminal reference signal resource configuration information in RRC idle / inactive mode. Instead, it broadcasts the information only when the terminal requests it.

[0237] The signal transmission method provided in this embodiment of the invention can effectively reduce system information overhead by sending system information after receiving random access request information sent by the terminal.

[0238] Based on any of the above embodiments, when the preset signaling is random access response information and paging information, the target reference signal resources sent by the receiving base station through the preset signaling specifically include:

[0239] The receiving base station sends a first set of reference signal resources through the random access response information, wherein the first set of reference signal resources includes one or more reference signal resources;

[0240] Receive the index value of the target reference signal resource sent by the base station through the paging information;

[0241] The target reference signal resource is selected from the first set of reference signal resources based on the index value.

[0242] Specifically, in this embodiment of the invention, reference signal resources are configured for the idle / inactive mode terminal through two levels of signaling.

[0243] The base station configures dedicated PRACH resources for terminals, including a preamble sequence and its RACH timing (RO). These dedicated PRACH resources are associated with the configuration of a reference signal resource set for terminals in RRC idle / inactive mode. Terminals in RRC connected / inactive mode transmit a dedicated preamble sequence on the aforementioned dedicated PRACH resources. Upon receiving the PRACH from the terminal, the base station uses message 2, i.e., the Random Access Response (RAR), to notify terminals in RRC-idle / inactive mode of their reference signal resource set configuration information. This scheme utilizes RAR to directly transmit the reference signal resource set configuration information, thereby significantly reducing system information overhead.

[0244] Considering that the terminal transmission resources in RRC-idle / inactive mode are relatively fixed or change slowly, it is preferable that the base station can use RAR and paging messages to jointly complete the configuration of reference signal resources.

[0245] Figure 4 This is a schematic diagram of the PRACH-based reference signal resource set request and configuration provided in an embodiment of the present invention, as shown below. Figure 4As shown. The terminal first sends a PRACH request associated with the requested reference signal resource set to the base station. After receiving the PRACH request from the terminal, the base station can use RAR to transmit preset reference signal resource set configuration information to the terminal. This resource set contains N reference signal resource sets, such as N=64, with indices of 0, 1, 2, ..., N-1. The base station notifies the terminal of the index of the specific reference signal resource set used and its update message through paging messages.

[0246] The signal transmission method provided in this embodiment of the invention utilizes RAR and paging messages to jointly complete the configuration of reference signal resources, which can significantly reduce system message signaling overhead.

[0247] Based on any of the above embodiments, when the preset signaling is random access response information and system information, the target reference signal resources sent by the receiving base station through the preset signaling specifically include:

[0248] The receiving base station sends a first set of reference signal resources through the random access response information, wherein the first set of reference signal resources includes one or more reference signal resources;

[0249] Receive the index value of the target reference signal resource sent by the base station through the system information;

[0250] The target reference signal resource is selected from the first set of reference signal resources based on the index value.

[0251] Specifically, in this embodiment of the invention, reference signal resources are configured for the idle / inactive mode terminal through two levels of signaling.

[0252] The base station configures dedicated PRACH resources for terminals, including a preamble sequence and its RACH timing (RO). These dedicated PRACH resources are associated with the configuration of a reference signal resource set for terminals in RRC idle / inactive mode. Terminals in RRC connected / inactive mode transmit a dedicated preamble sequence on the aforementioned dedicated PRACH resources. Upon receiving the PRACH from the terminal, the base station uses message 2, the Random Access Response (RAR), to notify terminals in RRC-idle / inactive mode of the reference signal resource set configuration information. This scheme utilizes RAR to directly transmit the reference signal resource set configuration information, thereby significantly reducing system information overhead.

[0253] Considering that the terminal transmission resources in RRC-idle / inactive mode are relatively fixed or change slowly, it is preferable that the base station can use RAR and system messages to jointly complete the configuration of reference signal resources.

[0254] Figure 4 This is a schematic diagram of the PRACH-based reference signal resource set request and configuration provided in an embodiment of the present invention, as shown below. Figure 4 As shown. The terminal first sends a PRACH request associated with the requested reference signal resource set to the base station. After receiving the PRACH request from the terminal, the base station can use RAR to transmit preset reference signal resource set configuration information to the terminal. This resource set contains N reference signal resource sets, such as N=64, with indices of 0, 1, 2, ..., N-1. The base station notifies the terminal of the index of the specific reference signal resource set used, as well as the update message of the reference signal resource set, through system information.

[0255] More advanced base stations can carry the reference signal set index currently used by the terminal in the SIB. This reference signal resource set is an element of the reference signal resource set configured in the aforementioned RAR. For example, the index can be expressed using 6 bits, which can significantly reduce system message signaling overhead.

[0256] The signal transmission method provided in this embodiment of the invention utilizes RAR and system messages to jointly complete the configuration of reference signal resources, which can significantly reduce the signaling overhead of system messages.

[0257] Based on any of the above embodiments, after receiving the reference signal according to the target reference signal resource, the method further includes:

[0258] The system receives indication information sent by the base station through system information, paging information, or downlink control information, the indication information being used to indicate a change in the first reference signal resource set.

[0259] Specifically, in this embodiment of the invention, after receiving the reference signal according to the target reference signal resource, the method further includes:

[0260] The system receives indication information sent by the base station through system information, paging information, or downlink control information. This indication information is used to indicate changes in the first reference signal resource set.

[0261] For example, the base station can reuse the function of notifying the system of changes in paging messages to receive system messages in a timely manner and obtain updated reference signal resource set indication information; the base station can also carry a message about changes in reference signal resource set configuration information in paging or system messages. The reference signal resource set contains N preset reference signal resource sets. For example, the base station can indicate the period in which the reference signal resource set changes in the SIB. For example, 01 represents M1 DRX / paging periods, and 11 represents M2 DRX / paging periods; the base station can also carry the reference signal resource set configuration information change indication information through paging or the DCI that schedules paging.

[0262] The following explanation uses the example of using paging to indicate the configuration information of the reference signal resource set. The base station uses the first signaling paging and / or the PDCCH that schedules the paging to indicate the configuration information of the reference signal resource set. In DCI format 1_0, the DCI that schedules the paging contains a Short Message indicator field, the meaning of which is shown in Table 1.

[0263] Table 1: Short Message indicator

[0264] Bit field Short Message indicator 00 Reserved 01 Only scheduling information for Paging is present in the DCI 10 Only short message is present in the DCI 11 Both scheduling information for Paging and short message are present in the DCI

[0265] The base station can use the reserved state 00 in the Short Message indicator to notify UEs in RRC idle / active mode to update. Subsequent scheduling paging, i.e., PDSCH, contains reference signal resource set configuration information. Similar to the above embodiment, this resource set contains N reference signal resource sets, such as N=64, with indices 0, 1, 2, ..., N-1. The base station can periodically notify the terminal of the index of the specific reference signal resource set used. Furthermore, the base station can carry the index of the reference signal set currently used by the terminal in the second signaling SIB. This reference signal resource set is an element of the reference signal resource set configured in the aforementioned paging message; for example, this index can be expressed using 6 bits. If the reference signal resource set configuration information changes, the base station can update the reference signal resource set configuration information in a timely manner through the control channel of the first signaling paging and its scheduling paging. This scheme can significantly reduce the signaling overhead of periodically sent system information, especially when the reference signal resource set configuration information configured by the base station changes frequently or is not easily changed. Finally, if the reference signal resource set configuration information changes, the terminal can receive timely notification and indication.

[0266] The signal transmission method provided in this embodiment of the invention can further reduce system message signaling overhead by indicating changes in the first reference signal resource set through system information, paging information or downlink control information.

[0267] Based on any of the above embodiments, the first reference signal resource set is a subset of the second reference signal resource set, and the second reference signal resource set refers to the set of reference signal resources configured by the base station for the connected terminal;

[0268] When the first reference signal resource set changes and is no longer a subset of the second reference signal resource set, the reference signal received by the terminal based on the target reference signal resource is the reference signal that the base station continues to transmit based on the original configured resources; the original configured resources are resources configured in the first reference signal resource set or a subset of the first reference signal resource set.

[0269] Specifically, in this embodiment of the invention, the first reference signal resource set is a subset of the second reference signal resource set, which refers to the set of reference signal resources configured by the base station for a connected terminal.

[0270] Preferably, the second set of reference signal resources refers to the set of reference signal resources configured by the base station for the connected terminal, which includes the reference signal resources currently in use.

[0271] For example, a base station configures resource set A and resource set B for a connected terminal. Resource set A contains currently used reference signal resources, while resource set B contains unused resources that are candidate resources. This second reference signal resource set is resource set A.

[0272] When the first reference signal resource set changes and is no longer a subset of the second reference signal resource set, the reference signal received by the terminal based on the target reference signal resource is the reference signal that the base station continues to transmit based on the original configured resources; the original configured resources are the resources configured in the first reference signal resource set or a subset of the first reference signal resource set.

[0273] For example, when the UE is in RRC idle / inactive mode, the SIBx signaling can be sent by the base station to the terminal for allocating RS resources, SIBx configured reference signals, or the corresponding time / frequency / space / code resources of the reference signals. Preferably, the base station uses RRC dedicated signaling, MAC CE signaling, or physical layer dynamic signaling to configure a subset of RS resources for the terminal in RRC-connected mode. That is, the reference signal is preferably a reference signal configured by the base station for the UE in RRC-connected mode of the cell, such as a periodic reference signal. Therefore, this signal is the reference signal being transmitted by the cell, and thus, no additional transmission resource overhead will be incurred because the base station provides a reference signal for the idle mode terminal. This scheme does not exclude the possibility of allocating reference signal resources to UEs in RRC idle / inactive mode that are different from those of connected UEs.

[0274] Terminals in RRC idle / inactive mode determine the transmission resources of the reference signals to be received based on the reference signal resource set or a subset of the resource set configured by the base station. For example, the 5G standard defines different frequency ranges: FR1: 450MHz–6000MHz, FR2: 24250MHz–52600MHz. For frequency range 1 (FR1), the terminal has only one receiving beam. The terminal determines the transmission resources of the reference signal to be received based on the set of reference signal resources configured by the base station for camping in the current frequency band. For frequency range 2 (FR2), the terminal has multiple receiving beams. The terminal preferably determines the transmission resources of the reference signal to be received from a subset of reference signal resources. The subset is a set of reference signal resources that satisfies a specific QCL relationship. The so-called specific QCL relationship preferably refers to the QCL relationship that matches the terminal's receiving beam. The reference signal resource set under one or more QCL relationships matches the terminal's receiving beam, so that the terminal can obtain a better reception effect. In the case of several QCL relationships, it is not ruled out that the terminal can receive the reference signal of the corresponding resource by beam switching.

[0275] The signal transmission method provided in this embodiment of the invention uses a first reference signal resource set that is a subset of the second reference signal resource set. This avoids additional transmission resource overhead caused by the base station providing reference signals for idle / inactive mode terminals, and further reduces system signaling overhead.

[0276] Based on any of the above embodiments Figure 5 This is a second schematic diagram of a signal transmission method provided in an embodiment of the present invention, as shown below. Figure 5As shown, this embodiment of the invention provides a signal transmission method, the execution subject of which can be a base station, including:

[0277] Step 501: Send target reference signal resources to the terminal through preset signaling.

[0278] Step 502: Send a reference signal to the terminal using the target reference signal resource.

[0279] Specifically, the signal transmission method provided in this embodiment of the invention is the same as the signal transmission method described in the corresponding embodiments above, and can achieve the same technical effect. The only difference is that the executing entity is different, which will not be repeated here.

[0280] The signal transmission method provided in this embodiment of the invention allows the network side to configure reference signal resources for terminals in a non-connected state via preset signaling. The terminals then use the configured reference signal resources to receive reference signals, thereby improving system performance and reducing power consumption.

[0281] Based on any of the above embodiments, the preset signaling includes any one or a combination of the following: system information, random access response information, and paging information.

[0282] Specifically, the signal transmission method provided in this embodiment of the invention is the same as the signal transmission method described in the corresponding embodiments above, and can achieve the same technical effect. The only difference is that the executing entity is different, which will not be repeated here.

[0283] Based on any of the above embodiments, the target reference signal resource includes at least one scrambling code identification code.

[0284] Specifically, the signal transmission method provided in this embodiment of the invention is the same as the signal transmission method described in the corresponding embodiments above, and can achieve the same technical effect. The only difference is that the executing entity is different, which will not be repeated here.

[0285] Based on any of the above embodiments, before sending the target reference signal resources to the terminal via preset signaling, the method further includes:

[0286] The number of target reference signal resources is determined according to a first preset rule.

[0287] Specifically, the signal transmission method provided in this embodiment of the invention is the same as the signal transmission method described in the corresponding embodiments above, and can achieve the same technical effect. The only difference is that the executing entity is different, which will not be repeated here.

[0288] Based on any of the above embodiments, when the preset signaling is system information, the step of sending the target reference signal resource to the terminal through the preset signaling specifically includes:

[0289] The system sends a first set of reference signal resources to the terminal, so that the terminal can determine the target reference signal resource based on the first set of reference signal resources; the first set of reference signal resources includes one or more reference signal resources.

[0290] Specifically, the signal transmission method provided in this embodiment of the invention is the same as the signal transmission method described in the corresponding embodiments above, and can achieve the same technical effect. The only difference is that the executing entity is different, which will not be repeated here.

[0291] Based on any of the above embodiments, the system information is associated with the transmitted content or with the transmitted resources.

[0292] Specifically, the signal transmission method provided in this embodiment of the invention is the same as the signal transmission method described in the corresponding embodiments above, and can achieve the same technical effect. The only difference is that the executing entity is different, which will not be repeated here.

[0293] Based on any of the above embodiments, when the preset signaling is system information, the step of sending the target reference signal resource to the terminal through the preset signaling specifically includes:

[0294] The system sends a first set of reference signal resources to the terminal through the first system information. The first set of reference signal resources includes one or more reference signal resources.

[0295] The second system information sends the index value of the target reference signal resource to the terminal, so that the terminal can filter the target reference signal resource from the first reference signal resource set according to the index value.

[0296] Specifically, the signal transmission method provided in this embodiment of the invention is the same as the signal transmission method described in the corresponding embodiments above, and can achieve the same technical effect. The only difference is that the executing entity is different, which will not be repeated here.

[0297] Based on any of the above embodiments, before sending the target reference signal resources to the terminal via preset signaling, the method further includes:

[0298] Receive random access request information sent by the terminal.

[0299] Specifically, the signal transmission method provided in this embodiment of the invention is the same as the signal transmission method described in the corresponding embodiments above, and can achieve the same technical effect. The only difference is that the executing entity is different, which will not be repeated here.

[0300] Based on any of the above embodiments, when the preset signaling is random access response information and paging information, the step of sending target reference signal resources to the terminal through the preset signaling specifically includes:

[0301] The first reference signal resource set is sent to the terminal through the random access response information, and the first reference signal resource set includes one or more reference signal resources;

[0302] The paging information sends the index value of the target reference signal resource to the terminal, so that the terminal can select the target reference signal resource from the first set of reference signal resources based on the index value.

[0303] Specifically, the signal transmission method provided in this embodiment of the invention is the same as the signal transmission method described in the corresponding embodiments above, and can achieve the same technical effect. The only difference is that the executing entity is different, which will not be repeated here.

[0304] Based on any of the above embodiments, when the preset signaling is random access response information and system information, the step of sending the target reference signal resource to the terminal through the preset signaling specifically includes:

[0305] The first reference signal resource set is sent to the terminal through the random access response information, and the first reference signal resource set includes one or more reference signal resources;

[0306] The system information sends the index value of the target reference signal resource to the terminal, so that the terminal can select the target reference signal resource from the first set of reference signal resources based on the index value.

[0307] Specifically, the signal transmission method provided in this embodiment of the invention is the same as the signal transmission method described in the corresponding embodiments above, and can achieve the same technical effect. The only difference is that the executing entity is different, which will not be repeated here.

[0308] Based on any of the above embodiments, after sending the reference signal to the terminal using the target reference signal resource, the method further includes:

[0309] Instruction information is sent to the terminal via system information, paging information, or downlink control information. The instruction information is used to indicate changes in the first reference signal resource set.

[0310] Specifically, the signal transmission method provided in this embodiment of the invention is the same as the signal transmission method described in the corresponding embodiments above, and can achieve the same technical effect. The only difference is that the executing entity is different, which will not be repeated here.

[0311] Based on any of the above embodiments, the first reference signal resource set is a subset of the second reference signal resource set, and the second reference signal resource set refers to the set of reference signal resources configured by the base station for the connected terminal;

[0312] When the first reference signal resource set changes and is no longer a subset of the second reference signal resource set, the reference signal received by the terminal based on the target reference signal resource is the reference signal that the base station continues to transmit based on the original configured resources; the original configured resources are resources configured in the first reference signal resource set or a subset of the first reference signal resource set.

[0313] Specifically, the signal transmission method provided in this embodiment of the invention is the same as the signal transmission method described in the corresponding embodiments above, and can achieve the same technical effect. The only difference is that the executing entity is different, which will not be repeated here.

[0314] Based on any of the above embodiments Figure 6 One of the schematic diagrams of a signal transmission device provided in an embodiment of the present invention is shown below. Figure 6 As shown, this embodiment of the invention provides a signal transmission device that can be used to execute the signal transmission method described in the above embodiments. It includes a first receiving module 601 and a second receiving module 602, wherein:

[0315] The first receiving module 601 is used to receive target reference signal resources sent by the base station through preset signaling; the second receiving module 602 is used to receive reference signals according to the target reference signal resources.

[0316] The signal transmission device provided in this embodiment of the invention is used to execute the methods described in the corresponding embodiments described above. The specific steps of executing the methods described in the corresponding embodiments by the device provided in this embodiment are the same as those in the corresponding embodiments described above, and achieve the same technical effect, which will not be repeated here.

[0317] The signal transmission device provided in this embodiment of the invention allows the network side to configure reference signal resources for terminals in a non-connected state via preset signaling. The terminals then use the configured reference signal resources to receive reference signals, thereby improving system performance and reducing power consumption.

[0318] Based on any of the above embodiments Figure 7 This is a second schematic diagram of a signal transmission device provided in an embodiment of the present invention, as shown below. Figure 7 As shown, this embodiment of the invention provides a signal transmission device that can be used to execute the signal transmission method described in the above embodiments. It includes a configuration module 701 and a transmission module 702, wherein:

[0319] The configuration module 701 is used to send target reference signal resources to the terminal through preset signaling; the sending module 702 is used to send reference signals to the terminal using the target reference signal resources.

[0320] The signal transmission device provided in this embodiment of the invention is used to execute the methods described in the corresponding embodiments described above. The specific steps of executing the methods described in the corresponding embodiments by the device provided in this embodiment are the same as those in the corresponding embodiments described above, and achieve the same technical effect, which will not be repeated here.

[0321] The signal transmission device provided in this embodiment of the invention allows the network side to configure reference signal resources for terminals in a non-connected state via preset signaling. The terminals then use the configured reference signal resources to receive reference signals, thereby improving system performance and reducing power consumption.

[0322] Figure 8 This is a schematic diagram of the structure of a mobile terminal provided in an embodiment of the present invention, as shown below. Figure 8 As shown, the mobile terminal 800 may include at least one processor 801, a memory 802, at least one network interface 804, and other user interfaces 803. The various components in the mobile terminal 800 are coupled together via a bus system 805. It is understood that the bus system 805 is used to implement communication between these components. In addition to a data bus, the bus system 805 also includes a power bus, a control bus, and a status signal bus. However, for clarity, in... Figure 8 The general labeled all buses as Bus System 805.

[0323] The user interface 803 may include a display, keyboard, or clicking device, such as a mouse, trackball, touchpad, or touchscreen.

[0324] It is understood that the memory 802 in the embodiments of the present invention can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. The volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced Synchronous DRAM (ESDRAM), Synchlink DRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 802 of the systems and methods described in the various embodiments of the present invention is intended to include, but is not limited to, these and any other suitable types of memory.

[0325] In some implementations, memory 802 stores elements such as executable modules or data structures, or subsets thereof, or extended sets thereof, for example: operating system 8021 and application program 8022.

[0326] The operating system 8021 includes various system programs, such as the framework layer, core library layer, and driver layer, used to implement various basic business functions and handle hardware-based tasks. The application program 8022 includes various applications, such as a media player and a browser, used to implement various application functions. The program implementing the method of this embodiment can be included in the application program 8022.

[0327] In this embodiment of the invention, by calling a computer program or instruction stored in memory 802, specifically a computer program or instruction stored in application program 8022, processor 801 is used to:

[0328] Receive target reference signal resources sent by the base station through preset signaling;

[0329] The reference signal is received according to the target reference signal resource.

[0330] The methods disclosed in the above embodiments of the present invention can be applied to or implemented by processor 801. Processor 801 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the integrated logic circuit of the hardware in processor 801 or by instructions in software form. The processor 801 may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of the present invention. The general-purpose processor may be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of the present invention can be directly embodied in the execution of a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. The storage medium is located in memory 802. Processor 801 reads the information in memory 802 and, in conjunction with its hardware, completes the steps of the above method.

[0331] It is understood that the embodiments described in this invention can be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, the processing unit can be implemented in 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), general-purpose processors, controllers, microcontrollers, microprocessors, other electronic units for performing the functions described in this application, or combinations thereof.

[0332] For software implementation, the technology can be achieved through modules (e.g., procedures, functions, etc.) that perform the functions described in the embodiments of the present invention. The software code can be stored in memory and executed by a processor. The memory can be implemented in the processor or externally.

[0333] Alternatively, as another embodiment, the preset signaling includes any one or a combination of the following: system information, random access response information, and paging information.

[0334] Alternatively, as another embodiment, the target reference signal resource includes at least one scrambling code identification code.

[0335] Alternatively, as another embodiment, the number of target reference signal resources is determined by the base station according to a first preset rule.

[0336] Optionally, as another embodiment, when the preset signaling is system information, the target reference signal resources sent by the receiving base station through the preset signaling specifically include:

[0337] Receive the first reference signal resource set sent by the base station through system information, wherein the first reference signal resource set includes one or more reference signal resources;

[0338] The target reference signal resource is determined based on the first set of reference signal resources.

[0339] Alternatively, as another embodiment, the system information is associated with the transmitted content or with the transmitted resources.

[0340] Optionally, as another embodiment, determining the target reference signal resource based on the first reference signal resource set specifically includes:

[0341] The target reference signal resource is selected from the set of reference signal resources according to the second preset rule.

[0342] Optionally, as another embodiment, the step of selecting the target reference signal resource from the reference signal resource set according to the second preset rule specifically includes:

[0343] The number of target reference signal resources is determined based on a pre-obtained first threshold value; when the terminal's first bandwidth is less than the first threshold value, the target reference signal resources include multiple resources; when the terminal's first bandwidth is greater than or equal to the first threshold value, the target reference signal resources include one resource.

[0344] Or include:

[0345] At least one reference signal resource is selected from the target reference signal resources according to the pre-obtained second threshold value as the target reference signal resource, wherein the target reference signal resource is the resource whose signal quality is greater than the second threshold value when the terminal receives the reference signal;

[0346] Or it may also include:

[0347] Based on the first value N obtained in advance, at least one reference signal resource is selected from the target reference signal resources as the target reference signal resource. The target reference signal resources are the N resources with the best signal quality when the terminal receives the reference signal, or the N resources with the largest bandwidth when the terminal receives the reference signal.

[0348] Or it may also include:

[0349] At least one reference signal resource is selected from the target reference signal resources based on the pre-obtained third and fourth threshold values ​​as the target reference signal resource. The target reference signal resource is a resource whose bandwidth is greater than the third threshold value and whose signal quality is greater than the fourth threshold value when the terminal receives the reference signal.

[0350] Optionally, as another embodiment, when the preset signaling is system information, the target reference signal resources sent by the receiving base station through the preset signaling specifically include:

[0351] The base station receives a first set of reference signal resources transmitted through a first system information, wherein the first set of reference signal resources includes one or more reference signal resources.

[0352] Receive the index value of the target reference signal resource sent by the base station through the second system information;

[0353] The target reference signal resource is selected from the first set of reference signal resources based on the index value.

[0354] Alternatively, as another embodiment, the system information is sent by the base station after receiving the random access request information sent by the terminal.

[0355] Optionally, as another embodiment, when the preset signaling is random access response information and paging information, the target reference signal resources sent by the receiving base station through the preset signaling specifically include:

[0356] The receiving base station sends a first set of reference signal resources through the random access response information, wherein the first set of reference signal resources includes one or more reference signal resources;

[0357] Receive the index value of the target reference signal resource sent by the base station through the paging information;

[0358] The target reference signal resource is selected from the first set of reference signal resources based on the index value.

[0359] Optionally, as another embodiment, when the preset signaling is random access response information and system information, the target reference signal resources sent by the receiving base station through the preset signaling specifically include:

[0360] The receiving base station sends a first set of reference signal resources through the random access response information, wherein the first set of reference signal resources includes one or more reference signal resources;

[0361] Receive the index value of the target reference signal resource sent by the base station through the system information;

[0362] The target reference signal resource is selected from the first set of reference signal resources based on the index value.

[0363] Optionally, as another embodiment, after receiving the reference signal according to the target reference signal resource, the method further includes:

[0364] The system receives indication information sent by the base station through system information, paging information, or downlink control information, the indication information being used to indicate a change in the first reference signal resource set.

[0365] Optionally, as another embodiment, the first reference signal resource set is a subset of the second reference signal resource set, which refers to the set of reference signal resources configured by the base station for the connected terminal;

[0366] When the first reference signal resource set changes and is no longer a subset of the second reference signal resource set, the reference signal received by the terminal based on the target reference signal resource is the reference signal that the base station continues to transmit based on the original configured resources; the original configured resources are resources configured in the first reference signal resource set or a subset of the first reference signal resource set.

[0367] The mobile terminals provided in the above embodiments of the present invention are used to execute the methods described in the corresponding embodiments. The specific steps of executing the methods described in the corresponding embodiments by the device provided in this embodiment are the same as those in the corresponding embodiments and achieve the same technical effect, which will not be repeated here.

[0368] The mobile terminal provided in this embodiment of the invention allows the network side to configure reference signal resources for the terminal in a non-connected state via a preset signaling method. The terminal then uses the configured reference signal resources to receive reference signals, thereby improving system performance and reducing power consumption.

[0369] Figure 9 This is a schematic diagram of the structure of a mobile terminal provided in another embodiment of the present invention. Figure 9 The mobile terminals mentioned can be mobile phones, tablets, personal digital assistants (PDAs), e-readers, handheld game consoles, point-of-sale (POS) terminals, in-vehicle electronic devices (vehicle computers), etc. Figure 9 As shown, the mobile terminal includes a radio frequency (RF) circuit 910, a memory 920, an input unit 930, a display unit 940, a processor 960, an audio circuit 970, a WiFi (Wireless Fidelity) module 980, and a power supply 990. Those skilled in the art will understand that... Figure 9 The mobile phone structure shown does not constitute a limitation on the mobile phone and may include more or fewer components than shown, or combine some components, or split some components, or have different component arrangements.

[0370] The input unit 930 can be used to receive numerical or character information input by the user, and to generate signal inputs related to user settings and function control of the mobile terminal. Specifically, in this embodiment of the invention, the input unit 930 may include a touch panel 9301. The touch panel 9301, also known as a touch screen, can collect touch operations performed by the user on or near it (such as operations performed by the user using a finger, stylus, or any suitable object or accessory on the touch panel 9301), and drive the corresponding connection device according to a pre-set program. Optionally, the touch panel 9301 may include two parts: a touch detection device and a touch controller. The touch detection device detects the user's touch position and the signal generated by the touch operation, and transmits the signal to the touch controller; the touch controller receives touch information from the touch detection device, converts it into touch point coordinates, and sends it to the processor 960, and can also receive and execute commands sent by the processor 960. In addition, the touch panel 9301 can be implemented using various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 9301, the input unit 930 may also include other input devices 9302. These other input devices 9302 can be used to receive input numeric or character information, and to generate key signal inputs related to user settings and function control of the mobile terminal. Specifically, the other input devices 9302 may include, but are not limited to, one or more of the following: a physical keyboard, function keys (such as volume control buttons, power buttons, etc.), a trackball, a mouse, a joystick, and an optical mouse (an optical mouse is a touch-sensitive surface that does not display visual output, or an extension of the touch-sensitive surface formed by the touchscreen).

[0371] The display unit 940 can be used to display information input by the user or information provided to the user, as well as various menu interfaces of the mobile terminal. The display unit 940 may include a display panel 9401. The display panel 9401 may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.

[0372] It should be noted that the touch panel 9301 can cover the display panel 9401 to form a touch display screen. When the touch display screen detects a touch operation on or near it, it transmits the information to the processor 960 to determine the type of touch event. Subsequently, the processor 960 provides corresponding visual output on the touch display screen according to the type of touch event.

[0373] The touchscreen display includes an application interface display area and a frequently used control display area. The arrangement of these two areas is not limited; they can be arranged vertically, horizontally, or otherwise to distinguish them. The application interface display area is used to display the application's interface. Each interface can contain at least one application icon and / or widgets or desktop controls. The application interface display area can also be an empty screen. The frequently used control display area displays frequently used controls, such as settings buttons, interface numbers, scroll bars, phonebook icons, and other application icons.

[0374] The RF circuit 910 can be used for receiving and transmitting signals during information transmission or calls. Specifically, it receives downlink information from the network side and processes it for the processor 960; additionally, it transmits uplink data to the network side. Typically, the RF circuit 910 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low-noise amplifier (LNA), a duplexer, etc. Furthermore, the RF circuit 910 can also communicate wirelessly with the network and other devices. This wireless communication can use any communication standard or protocol, including but not limited to Global System for Mobile Communications (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), email, and Short Messaging Service (SMS).

[0375] The memory 920 is used to store software programs and modules. The processor 960 executes various functional applications and data processing of the mobile terminal by running the software programs and modules stored in the memory 920. The memory 920 may mainly include a program storage area and a data storage area. The program storage area may store the operating system, at least one application program required for a function (such as sound playback function, image playback function, etc.), etc.; the data storage area may store data created according to the use of the mobile terminal (such as audio data, phone book, etc.). In addition, the memory 920 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device.

[0376] The processor 960 is the control center of the mobile terminal. It connects various parts of the phone through various interfaces and lines. By running or executing software programs and / or modules stored in the first memory 9201 and calling data stored in the second memory 9202, it performs various functions of the mobile terminal and processes data, thereby monitoring the mobile terminal as a whole. Optionally, the processor 960 may include one or more processing units.

[0377] In this embodiment of the invention, by calling the software program and / or module stored in the first memory 9201 and / or the data stored in the second memory 9202, the processor 960 is used to receive the target reference signal resources sent by the base station through preset signaling;

[0378] The reference signal is received according to the target reference signal resource.

[0379] Alternatively, as another embodiment, the preset signaling includes any one or a combination of the following: system information, random access response information, and paging information.

[0380] Alternatively, as another embodiment, the target reference signal resource includes at least one scrambling code identification code.

[0381] Alternatively, as another embodiment, the number of target reference signal resources is determined by the base station according to a first preset rule.

[0382] Optionally, as another embodiment, when the preset signaling is system information, the target reference signal resources sent by the receiving base station through the preset signaling specifically include:

[0383] Receive the first set of reference signal resources sent by the base station through system information, wherein the first set of reference signal resources includes one or more reference signal resources;

[0384] The target reference signal resource is determined based on the first set of reference signal resources.

[0385] Alternatively, as another embodiment, the system information is associated with the transmitted content or with the transmitted resources.

[0386] Optionally, as another embodiment, determining the target reference signal resource based on the first reference signal resource set specifically includes:

[0387] The target reference signal resource is selected from the set of reference signal resources according to the second preset rule.

[0388] Optionally, as another embodiment, the step of selecting the target reference signal resource from the reference signal resource set according to the second preset rule specifically includes:

[0389] The number of target reference signal resources is determined based on a pre-obtained first threshold value; when the terminal's first bandwidth is less than the first threshold value, the target reference signal resources include multiple resources; when the terminal's first bandwidth is greater than or equal to the first threshold value, the target reference signal resources include one resource.

[0390] Or include:

[0391] At least one reference signal resource is selected from the target reference signal resources according to the pre-obtained second threshold value as the target reference signal resource, wherein the target reference signal resource is the resource whose signal quality is greater than the second threshold value when the terminal receives the reference signal;

[0392] Or it may also include:

[0393] Based on the first value N obtained in advance, at least one reference signal resource is selected from the target reference signal resources as the target reference signal resource. The target reference signal resources are the N resources with the best signal quality when the terminal receives the reference signal, or the N resources with the largest bandwidth when the terminal receives the reference signal.

[0394] Or it may also include:

[0395] At least one reference signal resource is selected from the target reference signal resources based on the pre-obtained third and fourth threshold values ​​as the target reference signal resource. The target reference signal resource is a resource whose bandwidth is greater than the third threshold value and whose signal quality is greater than the fourth threshold value when the terminal receives the reference signal.

[0396] Optionally, as another embodiment, when the preset signaling is system information, the target reference signal resources sent by the receiving base station through the preset signaling specifically include:

[0397] The base station receives a first set of reference signal resources transmitted through a first system information, wherein the first set of reference signal resources includes one or more reference signal resources.

[0398] Receive the index value of the target reference signal resource sent by the base station through the second system information;

[0399] The target reference signal resource is selected from the first set of reference signal resources based on the index value.

[0400] Alternatively, as another embodiment, the system information is sent by the base station after receiving the random access request information sent by the terminal.

[0401] Optionally, as another embodiment, when the preset signaling is random access response information and paging information, the target reference signal resources sent by the receiving base station through the preset signaling specifically include:

[0402] The receiving base station sends a first set of reference signal resources through the random access response information, wherein the first set of reference signal resources includes one or more reference signal resources;

[0403] Receive the index value of the target reference signal resource sent by the base station through the paging information;

[0404] The target reference signal resource is selected from the first set of reference signal resources based on the index value.

[0405] Optionally, as another embodiment, when the preset signaling is random access response information and system information, the target reference signal resources sent by the receiving base station through the preset signaling specifically include:

[0406] The receiving base station sends a first set of reference signal resources through the random access response information, wherein the first set of reference signal resources includes one or more reference signal resources;

[0407] Receive the index value of the target reference signal resource sent by the base station through the system information;

[0408] The target reference signal resource is selected from the first set of reference signal resources based on the index value.

[0409] Optionally, as another embodiment, after receiving the reference signal according to the target reference signal resource, the method further includes:

[0410] The system receives indication information sent by the base station through system information, paging information, or downlink control information, the indication information being used to indicate a change in the first reference signal resource set.

[0411] Optionally, as another embodiment, the first reference signal resource set is a subset of the second reference signal resource set, which refers to the set of reference signal resources configured by the base station for the connected terminal;

[0412] When the first reference signal resource set changes and is no longer a subset of the second reference signal resource set, the reference signal received by the terminal based on the target reference signal resource is the reference signal that the base station continues to transmit based on the original configured resources; the original configured resources are resources configured in the first reference signal resource set or a subset of the first reference signal resource set.

[0413] The mobile terminals provided in the above embodiments of the present invention are used to execute the methods described in the corresponding embodiments. The specific steps of executing the methods described in the corresponding embodiments by the device provided in this embodiment are the same as those in the corresponding embodiments and achieve the same technical effect, which will not be repeated here.

[0414] The mobile terminal provided in this embodiment of the invention allows the network side to configure reference signal resources for the terminal in a non-connected state via a preset signaling method. The terminal then uses the configured reference signal resources to receive reference signals, thereby improving system performance and reducing power consumption.

[0415] Figure 10 This is a schematic diagram of the structure of a base station provided in an embodiment of the present invention, as shown below. Figure 10 As shown, the base station 1000 may include at least one processor 1001, a memory 1002, at least one other user interface 1003, and a transceiver 1004. The various components in the base station 1000 are coupled together via a bus system 1005. It is understood that the bus system 1005 is used to implement communication between these components. In addition to a data bus, the bus system 1005 also includes a power bus, a control bus, and a status signal bus. However, for clarity, in… Figure 10 Various buses are designated as bus system 1005. A bus system can include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 1001 and memory represented by memory 1002 together. The bus system can also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be further described in this embodiment. The bus interface provides an interface. Transceiver 1004 can be multiple components, including transmitters and receivers, providing a unit for communicating with various other devices over a transmission medium. For different user equipment, user interface 1003 can also be an interface capable of connecting external or internal devices, including but not limited to keypads, displays, speakers, microphones, joysticks, etc.

[0416] It is understood that the memory 1002 in the embodiments of the present invention can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. The volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced Synchronous DRAM (ESDRAM), Synchlink DRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 1002 of the systems and methods described in the various embodiments of the present invention is intended to include, but is not limited to, these and any other suitable types of memory.

[0417] Processor 1001 is responsible for managing the bus system and general processing, while memory 1002 can store computer programs or instructions used by processor 1001 during operation. Specifically,

[0418] Processor 1001 can be used for:

[0419] The target reference signal resources are sent to the terminal through preset signaling;

[0420] The reference signal is sent to the terminal using the target reference signal resource.

[0421] The methods disclosed in the above embodiments of the present invention can be applied to or implemented by processor 1001. Processor 1001 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the integrated logic circuit of the hardware in processor 1001 or by instructions in the form of software. The processor 1001 may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of the present invention. The general-purpose processor may be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of the present invention can be directly embodied in the execution of a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. The storage medium is located in memory 1002. Processor 1001 reads the information in memory 1002 and, in conjunction with its hardware, completes the steps of the above method.

[0422] It is understood that the embodiments described in this invention can be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, the processing unit can be implemented in 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), general-purpose processors, controllers, microcontrollers, microprocessors, other electronic units for performing the functions described in this application, or combinations thereof.

[0423] For software implementation, the technology can be achieved through modules (e.g., procedures, functions, etc.) that perform the functions described in the embodiments of the present invention. The software code can be stored in memory and executed by a processor. The memory can be implemented in the processor or externally.

[0424] Alternatively, as another embodiment, the preset signaling includes any one or a combination of the following: system information, random access response information, and paging information.

[0425] Alternatively, as another embodiment, the target reference signal resource includes at least one scrambling code identification code.

[0426] Optionally, as another embodiment, before sending the target reference signal resource to the terminal via preset signaling, the method further includes:

[0427] The number of target reference signal resources is determined according to a first preset rule.

[0428] Optionally, as another embodiment, when the preset signaling is system information, the step of sending the target reference signal resource to the terminal through the preset signaling specifically includes:

[0429] The system sends a first set of reference signal resources to the terminal, so that the terminal can determine the target reference signal resource based on the first set of reference signal resources; the first set of reference signal resources includes one or more reference signal resources.

[0430] Alternatively, as another embodiment, the system information is associated with the transmitted content or with the transmitted resources.

[0431] Optionally, as another embodiment, when the preset signaling is system information, the step of sending the target reference signal resource to the terminal through the preset signaling specifically includes:

[0432] The system sends a first set of reference signal resources to the terminal through the first system information. The first set of reference signal resources includes one or more reference signal resources.

[0433] The second system information sends the index value of the target reference signal resource to the terminal, so that the terminal can filter the target reference signal resource from the first reference signal resource set according to the index value.

[0434] Optionally, as another embodiment, before sending the target reference signal resource to the terminal via preset signaling, the method further includes:

[0435] Receive random access request information sent by the terminal.

[0436] Optionally, as another embodiment, when the preset signaling is random access response information and paging information, the step of sending target reference signal resources to the terminal through the preset signaling specifically includes:

[0437] The first reference signal resource set is sent to the terminal through the random access response information, and the first reference signal resource set includes one or more reference signal resources;

[0438] The paging information sends the index value of the target reference signal resource to the terminal, so that the terminal can select the target reference signal resource from the first set of reference signal resources based on the index value.

[0439] Optionally, as another embodiment, when the preset signaling is random access response information and system information, the step of sending the target reference signal resource to the terminal through the preset signaling specifically includes:

[0440] The first reference signal resource set is sent to the terminal through the random access response information, and the first reference signal resource set includes one or more reference signal resources;

[0441] The system information sends the index value of the target reference signal resource to the terminal, so that the terminal can select the target reference signal resource from the first set of reference signal resources based on the index value.

[0442] Optionally, as another embodiment, after transmitting the reference signal to the terminal using the target reference signal resource, the method further includes:

[0443] Instruction information is sent to the terminal via system information, paging information, or downlink control information. The instruction information is used to indicate changes in the first reference signal resource set.

[0444] Optionally, as another embodiment, the first reference signal resource set is a subset of the second reference signal resource set, which refers to the set of reference signal resources configured by the base station for the connected terminal;

[0445] When the first reference signal resource set changes and is no longer a subset of the second reference signal resource set, the reference signal received by the terminal based on the target reference signal resource is the reference signal that the base station continues to transmit based on the original configured resources; the original configured resources are resources configured in the first reference signal resource set or a subset of the first reference signal resource set.

[0446] The base stations provided in the above embodiments of the present invention are used to execute the methods described in the corresponding embodiments. The specific steps of executing the methods described in the corresponding embodiments by the device provided in this embodiment are the same as those in the corresponding embodiments and achieve the same technical effect, which will not be repeated here.

[0447] The base station provided in this embodiment of the invention configures reference signal resources for terminals in a pre-defined connectionless state. The terminals then use the configured reference signal resources to receive reference signals, thereby improving system performance and reducing power consumption.

[0448] The above description primarily focuses on the solutions provided by the embodiments of the present invention from the perspective of electronic devices (mobile terminals and base stations). It is understood that the electronic devices provided by the embodiments of the present invention, in order to achieve the above functions, include corresponding hardware structures and / or software modules for performing each function. Those skilled in the art should readily recognize that, in conjunction with the units and algorithm steps of the various examples described in the embodiments disclosed herein, the present invention can be implemented in hardware or a combination of hardware and computer software.

[0449] Whether a function is implemented through hardware or computer software-driven hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described function for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0450] In this embodiment of the invention, electronic devices and the like can be divided into functional modules according to the above method examples. For example, each function can be divided into its own functional module, or two or more functions can be integrated into one processing module. The integrated module can be implemented in hardware or as a software functional module.

[0451] It should be noted that the module division in this embodiment of the invention is illustrative and is only a logical functional division. In actual implementation, there may be other division methods.

[0452] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional modules is used as an example. In practical applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. The specific working process of the system, device, and unit described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0453] In the several embodiments provided by this invention, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative. For instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection between apparatuses or units through some interfaces.

[0454] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0455] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated units described above can be implemented in the form of software functional units.

[0456] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, all or part of the technical solution can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute all or part of the steps of the methods described in the various embodiments of the present invention. The computer storage medium is a nontransitory medium, including flash memory, portable hard disk, read-only memory, random access memory, magnetic disk, or optical disk, and other media capable of storing program code.

[0457] On the other hand, embodiments of the present invention also provide a computer program product, the computer program product including a computer program stored on a non-transitory computer-readable storage medium, the computer program including program instructions, and when the program instructions are executed by a computer, the computer is able to execute the signal transmission method provided in the above-described method embodiments, the method including:

[0458] The system receives target reference signal resources sent by the base station through preset signaling; and receives reference signals according to the target reference signal resources.

[0459] Or include:

[0460] The target reference signal resources are sent to the terminal through preset signaling;

[0461] The reference signal is sent to the terminal using the target reference signal resource.

[0462] On the other hand, embodiments of the present invention also provide a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to perform the methods provided in the above embodiments, including:

[0463] The system receives target reference signal resources sent by the base station through preset signaling; and receives reference signals according to the target reference signal resources.

[0464] Or include:

[0465] The target reference signal resources are sent to the terminal through preset signaling;

[0466] The reference signal is sent to the terminal using the target reference signal resource.

[0467] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for transmitting a signal, characterized in that, Applied to terminals, including: Receive target reference signal resources sent by the base station through preset signaling; The terminal receives a reference signal according to the target reference signal resource; wherein the terminal is in idle mode RRC_IDLEMode or radio resource control inactive mode RRC_INACTIVE Mode, and the reference signal is a tracking reference signal TRS; When the preset signaling includes system information, the target reference signal resources transmitted by the receiving base station through the preset signaling include: Receive the first reference signal resource set sent by the base station through system information, wherein the first reference signal resource set includes one or more reference signal resources; The target reference signal resource is determined based on the first set of reference signal resources; After receiving the reference signal according to the target reference signal resource, the method further includes: The receiver receives an indication message sent by the base station via paging information, the indication message being used to indicate a change in the first reference signal resource set.

2. The signal transmission method according to claim 1, characterized in that, The preset signaling also includes any one or a combination of the following: random access response information and paging information.

3. The signal transmission method according to claim 1, characterized in that, The target reference signal resource includes at least one scrambling code identification code.

4. The signal transmission method according to claim 1, characterized in that, The number of target reference signal resources is determined by the base station according to a first preset rule.

5. The signal transmission method according to claim 1, characterized in that, The system information is associated with the transmitted content or with the transmitted resources.

6. The signal transmission method according to claim 1, characterized in that, Determining the target reference signal resource based on the first reference signal resource set includes: The target reference signal resource is selected from the set of reference signal resources according to the second preset rule.

7. The signal transmission method according to claim 6, characterized in that, The step of selecting the target reference signal resource from the reference signal resource set according to the second preset rule includes: The number of target reference signal resources is determined based on a pre-obtained first threshold value; when the terminal's first bandwidth is less than the first threshold value, the target reference signal resources include multiple resources; when the terminal's first bandwidth is greater than or equal to the first threshold value, the target reference signal resources include one resource. Or include: At least one reference signal resource is selected from the target reference signal resources according to the pre-obtained second threshold value as the target reference signal resource, wherein the target reference signal resource is the resource whose signal quality is greater than the second threshold value when the terminal receives the reference signal; Or it may also include: Based on the first value N obtained in advance, at least one reference signal resource is selected from the target reference signal resources as the target reference signal resource. The target reference signal resources are the N resources with the best signal quality when the terminal receives the reference signal, or the N resources with the largest bandwidth when the terminal receives the reference signal. Or it may also include: At least one reference signal resource is selected from the target reference signal resources based on the pre-obtained third and fourth threshold values ​​as the target reference signal resource. The target reference signal resource is a resource whose bandwidth is greater than the third threshold value and whose signal quality is greater than the fourth threshold value when the terminal receives the reference signal.

8. The signal transmission method according to claim 1, characterized in that, The first set of reference signal resources received by the base station through system information includes: The first reference signal resource set is received by the base station through the first system information; Determining the target reference signal resource based on the first reference signal resource set includes: Receive the index value of the target reference signal resource sent by the base station through the second system information; The target reference signal resource is selected from the first set of reference signal resources based on the index value.

9. The signal transmission method according to any one of claims 1-8, characterized in that, The system information is sent by the base station after receiving the random access request information sent by the terminal.

10. The signal transmission method according to claim 2, characterized in that, When the preset signaling includes random access response information and system information, the target reference signal resources transmitted by the receiving base station through the preset signaling include: The receiving base station sends a first set of reference signal resources through the random access response information, wherein the first set of reference signal resources includes one or more reference signal resources; Receive the index value of the target reference signal resource sent by the base station through the system information; The target reference signal resource is selected from the first set of reference signal resources based on the index value.

11. The signal transmission method according to any one of claims 1-8 and 10, characterized in that, The first set of reference signal resources is a subset of the second set of reference signal resources, which refers to the set of reference signal resources configured by the base station for connected terminals. When the first reference signal resource set changes and the first reference signal resource set is no longer a subset of the second reference signal resource set, the reference signal received by the terminal based on the target reference signal resource is the reference signal that the base station continues to send based on the original configured resources. The original configuration resources are resources configured in the first reference signal resource set or a subset of the first reference signal resource set.

12. A method for transmitting a signal, characterized in that, include: The target reference signal resources are sent to the terminal through preset signaling; The terminal is sent a reference signal using the target reference signal resource; wherein the terminal is in idle mode (RRC_IDLE Mode) or radio resource control inactive mode (RRC_INACTIVE Mode), and the reference signal is a tracking reference signal (TRS). When the preset signaling includes system information, the step of sending the target reference signal resource to the terminal via the preset signaling includes: The system sends a first set of reference signal resources to the terminal, so that the terminal can determine the target reference signal resource based on the first set of reference signal resources; the first set of reference signal resources includes one or more reference signal resources. After sending the reference signal to the terminal using the target reference signal resource, the method further includes: Instruction information is sent to the terminal via paging information, the instruction information being used to indicate a change in the first reference signal resource set.

13. The signal transmission method according to claim 12, characterized in that, The preset signaling also includes any one or a combination of the following: random access response information and paging information.

14. The signal transmission method according to claim 12, characterized in that, The target reference signal resource includes at least one scrambling code identification code.

15. The signal transmission method according to claim 12, characterized in that, Before sending the target reference signal resources to the terminal via preset signaling, the method further includes: The number of target reference signal resources is determined according to a first preset rule.

16. The signal transmission method according to claim 12, characterized in that, The system information is associated with the transmitted content or with the transmitted resources.

17. The signal transmission method according to claim 12, characterized in that, The step of sending the first reference signal resource set to the terminal via system information includes: The first system information is used to send a first set of reference signal resources to the terminal; The method further includes: The second system information sends the index value of the target reference signal resource to the terminal, so that the terminal can filter the target reference signal resource from the first reference signal resource set according to the index value.

18. The signal transmission method according to claim 16 or 17, characterized in that, Before sending the target reference signal resources to the terminal via preset signaling, the method further includes: Receive random access request information sent by the terminal.

19. The signal transmission method according to claim 13, characterized in that, When the preset signaling includes random access response information and system information, the step of sending target reference signal resources to the terminal via the preset signaling includes: The first reference signal resource set is sent to the terminal through the random access response information, and the first reference signal resource set includes one or more reference signal resources; The system information sends the index value of the target reference signal resource to the terminal, so that the terminal can select the target reference signal resource from the first set of reference signal resources based on the index value.

20. The signal transmission method according to claim 12, 16, 17, or 19, characterized in that, The first set of reference signal resources is a subset of the second set of reference signal resources, which refers to the set of reference signal resources configured by the base station for connected terminals. When the first reference signal resource set changes and the first reference signal resource set is no longer a subset of the second reference signal resource set, the reference signal received by the terminal based on the target reference signal resource is the reference signal that the base station continues to send based on the original configured resources. The original configuration resources are resources configured in the first reference signal resource set or a subset of the first reference signal resource set.

21. A signal transmission device, characterized in that, Applied to terminals, including: The first receiving module is used to receive target reference signal resources sent by the base station through preset signaling; The second receiving module is used to receive a reference signal according to the target reference signal resource; wherein the terminal is in idle mode RRC_IDLE Mode or radio resource control inactive mode RRC_INACTIVE Mode, and the reference signal is a tracking reference signal TRS; When the preset signaling includes system information, the first receiving module is configured to receive target reference signal resources sent by the base station through the preset signaling, including: Receive the first reference signal resource set sent by the base station through system information, wherein the first reference signal resource set includes one or more reference signal resources; The target reference signal resource is determined based on the first set of reference signal resources; After receiving the reference signal according to the target reference signal resource, the second receiving module is further configured to: The receiver receives an indication message sent by the base station via paging information, the indication message being used to indicate a change in the first reference signal resource set.

22. A signal transmission device, characterized in that, include: The configuration module is used to send target reference signal resources to the terminal through preset signaling; The transmitting module is used to transmit a reference signal to the terminal using the target reference signal resource; wherein the terminal is in idle mode RRC_IDLE Mode or radio resource control inactive mode RRC_INACTIVE Mode, and the reference signal is a tracking reference signal TRS; When the preset signaling includes system information, the configuration module is used to send target reference signal resources to the terminal via the preset signaling, including: The system sends a first set of reference signal resources to the terminal, so that the terminal can determine the target reference signal resource based on the first set of reference signal resources; the first set of reference signal resources includes one or more reference signal resources. After transmitting the reference signal to the terminal using the target reference signal resource, the transmitting module is further configured to: Instruction information is sent to the terminal via paging information, the instruction information being used to indicate a change in the first reference signal resource set.

23. A terminal, comprising a memory, a processor, and a program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it performs the following steps: Receive target reference signal resources sent by the base station through preset signaling; The terminal receives a reference signal according to the target reference signal resource; wherein the terminal is in idle mode RRC_IDLEMode or radio resource control inactive mode RRC_INACTIVE Mode, and the reference signal is a tracking reference signal TRS; When the preset signaling includes system information, the target reference signal resources transmitted by the receiving base station through the preset signaling include: Receive the first reference signal resource set sent by the base station through system information, wherein the first reference signal resource set includes one or more reference signal resources; The target reference signal resource is determined based on the first set of reference signal resources; After receiving the reference signal according to the target reference signal resource, the method further includes: The receiver receives an indication message sent by the base station via paging information, the indication message being used to indicate a change in the first reference signal resource set.

24. The terminal according to claim 23, characterized in that, The preset signaling also includes any one or a combination of the following: random access response information and paging information.

25. The terminal according to claim 23, characterized in that, The target reference signal resource includes at least one scrambling code identification code.

26. The terminal according to claim 23, characterized in that, The number of target reference signal resources is determined by the base station according to a first preset rule.

27. The terminal according to claim 23, characterized in that, The system information is associated with the transmitted content or with the transmitted resources.

28. The terminal according to claim 23, characterized in that, Determining the target reference signal resource based on the first reference signal resource set includes: The target reference signal resource is selected from the set of reference signal resources according to the second preset rule.

29. The terminal according to claim 28, characterized in that, The step of selecting the target reference signal resource from the reference signal resource set according to the second preset rule includes: The number of target reference signal resources is determined based on a pre-obtained first threshold value; when the terminal's first bandwidth is less than the first threshold value, the target reference signal resources include multiple resources; when the terminal's first bandwidth is greater than or equal to the first threshold value, the target reference signal resources include one resource. Or include: At least one reference signal resource is selected from the target reference signal resources according to the pre-obtained second threshold value as the target reference signal resource, wherein the target reference signal resource is the resource whose signal quality is greater than the second threshold value when the terminal receives the reference signal; Or it may also include: Based on the first value N obtained in advance, at least one reference signal resource is selected from the target reference signal resources as the target reference signal resource. The target reference signal resources are the N resources with the best signal quality when the terminal receives the reference signal, or the N resources with the largest bandwidth when the terminal receives the reference signal. Or it may also include: At least one reference signal resource is selected from the target reference signal resources based on the pre-obtained third and fourth threshold values ​​as the target reference signal resource. The target reference signal resource is a resource whose bandwidth is greater than the third threshold value and whose signal quality is greater than the fourth threshold value when the terminal receives the reference signal.

30. The terminal according to claim 23, characterized in that, The first set of reference signal resources received by the base station through system information includes: The first reference signal resource set is received by the base station through the first system information; Determining the target reference signal resource based on the first reference signal resource set includes: Receive the index value of the target reference signal resource sent by the base station through the second system information; The target reference signal resource is selected from the first set of reference signal resources based on the index value.

31. The terminal according to any one of claims 23-30, characterized in that, The system information is sent by the base station after receiving the random access request information sent by the terminal.

32. The terminal according to claim 24, characterized in that, When the preset signaling includes random access response information and system information, the target reference signal resources transmitted by the receiving base station through the preset signaling include: The receiving base station sends a first set of reference signal resources through the random access response information, wherein the first set of reference signal resources includes one or more reference signal resources; Receive the index value of the target reference signal resource sent by the base station through the system information; The target reference signal resource is selected from the first set of reference signal resources based on the index value.

33. The terminal according to any one of claims 23-30 and 32, characterized in that, The first set of reference signal resources is a subset of the second set of reference signal resources, which refers to the set of reference signal resources configured by the base station for connected terminals. When the first reference signal resource set changes and the first reference signal resource set is no longer a subset of the second reference signal resource set, the reference signal received by the terminal based on the target reference signal resource is the reference signal that the base station continues to send based on the original configured resources. The original configuration resources are resources configured in the first reference signal resource set or a subset of the first reference signal resource set.

34. A base station, comprising a memory, a processor, and a program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it performs the following steps: The target reference signal resources are sent to the terminal through preset signaling; The terminal is sent a reference signal using the target reference signal resource; wherein the terminal is in idle mode (RRC_IDLE Mode) or radio resource control inactive mode (RRC_INACTIVE Mode), and the reference signal is a tracking reference signal (TRS). When the preset signaling includes system information, the step of sending the target reference signal resource to the terminal via the preset signaling includes: The system sends a first set of reference signal resources to the terminal, so that the terminal can determine the target reference signal resource based on the first set of reference signal resources; the first set of reference signal resources includes one or more reference signal resources. After sending the reference signal to the terminal using the target reference signal resource, the method further includes: Instruction information is sent to the terminal via paging information, the instruction information being used to indicate a change in the first reference signal resource set.

35. The base station according to claim 34, characterized in that, The preset signaling also includes any one or a combination of the following: random access response information and paging information.

36. The base station according to claim 34, characterized in that, The target reference signal resource includes at least one scrambling code identification code.

37. The base station according to claim 34, characterized in that, Before sending the target reference signal resources to the terminal via preset signaling, the method further includes: The number of target reference signal resources is determined according to a first preset rule.

38. The base station according to claim 34, characterized in that, The system information is associated with the transmitted content or with the transmitted resources.

39. The base station according to claim 34, characterized in that, The step of sending the first reference signal resource set to the terminal via system information includes: The first system information is used to send a first set of reference signal resources to the terminal; The processor is also used to perform the following steps: The second system information sends the index value of the target reference signal resource to the terminal, so that the terminal can filter the target reference signal resource from the first reference signal resource set according to the index value.

40. The base station according to claim 38 or 39, characterized in that, Before sending the target reference signal resources to the terminal via preset signaling, the method further includes: Receive random access request information sent by the terminal.

41. The base station according to claim 35, characterized in that, When the preset signaling includes random access response information and system information, the step of sending target reference signal resources to the terminal via the preset signaling includes: The first reference signal resource set is sent to the terminal through the random access response information, and the first reference signal resource set includes one or more reference signal resources; The system information sends the index value of the target reference signal resource to the terminal, so that the terminal can select the target reference signal resource from the first set of reference signal resources based on the index value.

42. The base station according to claim 34, 38, 39, or 41, characterized in that, The first set of reference signal resources is a subset of the second set of reference signal resources, which refers to the set of reference signal resources configured by the base station for connected terminals. When the first reference signal resource set changes and the first reference signal resource set is no longer a subset of the second reference signal resource set, the reference signal received by the terminal based on the target reference signal resource is the reference signal that the base station continues to send based on the original configured resources. The original configuration resources are resources configured in the first reference signal resource set or a subset of the first reference signal resource set.

43. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When executed by a processor, the computer program implements the steps of the signal transmission method as described in any one of claims 1 to 20.

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