Method and apparatus for providing system information

Abstract

A method and device for providing system information is provided, the method being applied to a network device, and including the step of transmitting system information in a dedicated manner to a terminal device satisfying a first condition when the first condition is satisfied, the first condition including that the terminal device is receiving downlink data from a dedicated channel of a non-serving cell, or that cell information related to an active TCI state of reception of a downlink channel of the terminal device is different from the cell information of a serving cell.

Description

[Technical Field]

[0001] The present invention relates to the field of communications. [Background technology]

[0002] Rel-15 NR includes several MIMO (multiple input multiple output) features to facilitate the use of multiple antenna elements at base stations in the sub-6 GHz and above-6 GHz frequency bands.

[0003] Rel-16 NR enhances Rel-15 NR by introducing a Type II codebook based on extended Discrete Fourier Transform (DFT) compression; support for multiple Transmission Reception Point (TRP) transmissions, particularly for Enhanced Mobile Broadband (eMBB) and Physical Downlink Shared Channel (PDSCH); enhanced multi-beam operation, including reduced measurement and reconstruction overhead for multiple quasi-co-locations (QCLs); secondary cell (SCell) beam failure recovery (BFR); L1-SINR, Peak-to-Average Power Ratio (PAPR) reference signals; and ensuring full uplink power transmission characteristics.

[0004] NR is currently being commercialized, and actual deployment scenarios have identified various aspects that require further enhancement, such as inter-cell beam management (ICBM), including:

[0005] Rel-16 attempts to reduce overhead and / or latency, and high-speed vehicular scenarios over FR2 (e.g., terminal devices traveling at high speeds on a highway) require more aggressive latency and overhead reduction, including mobility not only within the cell but also between the cell L1 and L2 layers, as well as reducing the occurrence of beam failure events.

[0006] In Rel-16, improvements were considered to ensure the extension of panel-specific uplink (UL) beam selection, but there was insufficient time to complete this work, which could potentially improve uplink coverage, including mitigating the loss of uplink coverage due to meeting maximum permissible exposure (MPE) rules.

[0007] Channels other than PDSCH can benefit from multi-TRP transmission (multi-panel reception), including inter-cell multi-TRP operation, which includes several new multi-TRP use cases, e.g., uplink dense deployments within macrocells and / or heterogeneous network type deployment scenarios.

[0008] The use of multi-scenario SRS further enhances the channel sounding reference signal (SRS) for at least capacity and coverage.

[0009] Rel-16 supports enhanced Type II Channel State Information (CSI), but some further enhancements are felt, including the use of partial reciprocity of CSI and channel statistics such as angle and delay, designed for multi-TRP / panel NC-JT use cases primarily targeted at FR1 Frequency Division Duplex (FDD) deployments.

[0010] Therefore, Rel-17 NR defines further enhancements to NR MIMO, including enhancements to multi-beam operation, primarily targeted at FR2 but also applicable to FR1, including:

[0011] (1) In intra-cell and inter-cell scenarios, characteristics that facilitate more efficient (lower delay and overhead) downlink / uplink (DL / UL) beam management and support higher terminal device speeds and / or more configured transmission configuration indication (TCI) states are determined and defined as follows:

[0012] Common beam for downlink and uplink, data and control transmission / reception, especially intra-band carrier aggregation (intra-band CA); TCI architecture with unified downlink and uplink beam direction, An enhancement to the above characteristic signaling mechanism that makes greater use of dynamic control signaling (for RRC) to improve latency and efficiency; and To provide system information, a terminal device transmits to or receives from only a single cell (i.e., the serving cell does not change when beam selection is completed). This includes L1-only measurement / reporting (i.e., no L3 impact) and cell-related beam indication for any physical cell identifier (PCI). Here, beam indication is based on the unified TCI architecture of Rel-17, reuses the same beam measurement / reporting mechanism of inter-cell mTRP, and considers only intra-DU and same-frequency situations.

[0013] (2) Considering the mitigation of uplink coverage loss due to MPE, determine and define characteristics that facilitate uplink beam selection for terminal devices equipped with multiple panels, and use a unified TCI architecture for uplink high-speed panel selection based on uplink beam instructions.

[0014] The above description of the background art is merely for the purpose of explaining the configuration of the present invention more clearly and completely, and is provided for the understanding of those skilled in the art. These configurations described in the background art of the present invention should not be construed as being well known to those skilled in the art. Summary of the Invention [Problem to be solved by the invention]

[0015] The system information includes a Master Information Block (MIB) and several System Information Blocks (SIB), which are divided into Minimum System Information (Minimum SI) and Other System Information (Other SI).

[0016] The minimum system information includes basic information required for initial access and information for obtaining other system information, and may include MIB and SIB1.

[0017] The MIB contains cell barring status information and basic cell physical layer information needed to receive more system information, such as CORESET#0 configuration, and is broadcast periodically on the Broadcast Channel (BCH).

[0018] SIB1 defines the scheduling of other system information blocks, including for example information required for initial access, and is also called the Remaining Minimum SI (RMSI) and is periodically broadcast on the Downlink Shared Channel (DL-SCH) or transmitted in a dedicated manner on the DL-SCH to RRC connected terminal devices.

[0019] The other system information includes all SIBs that are not broadcast in the minimum system information. The other system information is periodically broadcast on the DL-SCH, or is broadcast on demand on the DL-SCH if requested by a terminal device in an RRC idle state (RRC_IDLE), an RRC inactive state (RRC_INACTIVE), or an RRC connected state (RRC_CONNECTED), or is transmitted in a dedicated manner to terminal devices in an RRC connected state on the DL-SCH if requested by a terminal device in an RRC connected state, when the network configures it, or when a public search space is not configured in the active BWP of this terminal device.

[0020] For a terminal device in an RRC connected state, when the network is configuring, a request for other system information may be sent to the network in a dedicated manner (i.e., via the uplink dedicated control channel UL-DCCH), with the granularity of the request being one SIB. The network device may respond with an RRC reconfiguration message (RRCReconfiguration) containing the requested SIB(s). The network device decides whether to transmit any of the requested SIBs dedicatedly or via broadcast.

[0021] Paging allows the network to reach terminal devices in RRC_IDLE and RRC_INACTIVE states via paging, and allows the network to notify terminal devices in RRC_IDLE, RRC_INACTIVE, and RRC_CONNECTED states of system information changes and Earthquake and Tsunami Warning System (ETWS) and Commercial Mobile Alert System (CMAS) indications via short messages. Both paging and short messages are addressed by the P-RNTI (Paging RNT) on the Physical Downlink Control Channel (PDCCH), with paging transmitted on the Paging Control Channel (PCCH) and short messages transmitted directly via the PDCCH.

[0022] When the terminal device is in an RRC connected state, the terminal device monitors the paging channel at any paging occasion (PO) notified in the system information for system change indications and public warning systems (PWS) notifications.

[0023] According to the findings of the inventors of the present invention, in the prior art, system information may be provided to connected terminal devices in a periodic broadcast or dedicated manner. If the terminal device requests it or if it has not configured a common search space for its active BWP, SIB1 and other system information may be transmitted to connected terminal devices in a dedicated manner on the DL-SCH.

[0024] However, in inter-cell beam management, if a terminal device uses a beam or a Transmission Reception Point (TRP) to receive downlink data on a dedicated channel, and the physical cell ID (PCI) associated with this beam or TRP is different from the physical cell ID of the serving cell, the terminal device cannot simultaneously receive short messages and system information from the beam or TRP of the serving cell. As a result, the terminal device may lose updated system information and common warning system (PWS) information, which may prevent the serving cell from providing service to the terminal device and prevent the terminal device from obtaining emergency information such as earthquakes and tsunamis.

[0025] To address one or more of the above-mentioned problems, embodiments of the present invention provide a method and apparatus for providing system information. [Means for solving the problem]

[0026] A first aspect of an embodiment of the present invention provides a system information providing device, which is applied to a network device, and includes: a first transmitting unit that, when a first condition is met, transmits system information to a terminal device that satisfies the first condition in a dedicated manner, wherein the first condition includes that the terminal device is receiving downlink data from a dedicated channel of a non-serving cell, or that cell information related to an active TCI state of reception of the downlink channel of the terminal device is different from the cell information of a serving cell.

[0027] In a second aspect of the present invention, there is provided a network device including the device according to the first aspect of the present invention.

[0028] In a third aspect of the embodiment of the present invention, there is provided a communication system including the network device according to the second aspect of the embodiment of the present invention and a terminal device.

[0029] A fourth aspect of an embodiment of the present invention provides a method for providing system information, which is applied to a network device, and includes a step of transmitting system information to a terminal device that satisfies a first condition in a dedicated manner when the first condition is met, wherein the first condition includes that the terminal device is receiving downlink data from a dedicated channel of a non-serving cell, or that cell information related to an active TCI state of reception of the downlink channel of the terminal device is different from the cell information of a serving cell.

[0030] In a fifth aspect of the present invention, there is provided a computer-readable program that, when executed in a system information providing device or a network device, causes a computer to cause the system information providing device or the network device to execute the system information providing method described in the fourth aspect of the present invention.

[0031] In a sixth aspect of the present invention, there is provided a storage medium having stored thereon a computer-readable program, which, when executed, causes a computer to execute the system information providing method described in the fourth aspect of the present invention on the system information providing device or network device.

[0032] One of the advantageous effects of the embodiment of the present invention is as follows: When a terminal device receives downlink data from a dedicated channel of a non-serving cell, or when the cell information related to the active TCI state of the reception of the downlink channel of the terminal device is different from the cell information of the serving cell, system information is transmitted to the terminal device in a dedicated manner, so that the terminal device can quickly obtain system information from the serving cell from the beam or TRP of the non-serving cell, so that the serving cell can properly provide service to the terminal device, and the terminal device can quickly obtain alert information and take action to avoid damage to people and property.

[0033] As shown in the following description and drawings, specific embodiments of the present invention are disclosed in detail to illustrate ways in which the principles of the present invention can be employed. However, the scope of the present invention is not limited to these embodiments. The present invention encompasses all modifications, alterations, and equivalents within the spirit and scope of the appended claims.

[0034] Features described and / or shown in one embodiment may be used in the same or similar manner in one or more other embodiments, may be combined with features in other embodiments, or may be substituted for features in other embodiments.

[0035] It should be noted that in this text, the term "include / includes / has" means the presence of a feature, element, step or component, and does not exclude the presence or addition of one or more other features, elements, steps or components. [Brief explanation of the drawings]

[0036] Elements and features depicted in one drawing and one embodiment of an example of the invention may be combined with elements and features shown in one or more drawings or embodiments, and in the drawings, like reference numerals may indicate corresponding elements in multiple drawings and may indicate corresponding elements used in more than one embodiment.

[0037] The drawings included are used to further understand the embodiments of the present invention, constitute a part of the specification, are used to illustrate the embodiments of the present invention, and together with the written description, explain the principles of the present invention. Note that the drawings described below are merely some examples of the present invention, and those skilled in the art can easily imagine other drawings based on these drawings. [Figure 1] 1 is a schematic diagram of an example of a communication system according to an embodiment of the present invention; [Figure 2] FIG. 2 is a schematic diagram of an example of providing system information by a network device. [Figure 3] FIG. 1 is a schematic diagram of an example of an inter-cell beam management scenario according to an embodiment of the present invention. [Figure 4] FIG. 1 is a schematic diagram of an example of an inter-cell multi-TRP scenario according to an embodiment of the present invention. [Figure 5] FIG. 2 is a schematic diagram of an example of a method for providing system information according to the first embodiment of the present invention. [Figure 6] FIG. 10 is a schematic diagram of an example of a method for providing system information according to a second embodiment of the present invention. [Figure 7] FIG. 10 is a schematic diagram of another example of a method for providing system information according to the second embodiment of the present invention. [Figure 8] FIG. 10 is a schematic diagram of an example of providing system information by a network device according to a second embodiment of the present invention; [Figure 9] FIG. 10 is a schematic diagram of another example of providing system information by a network device according to the second embodiment of the present invention; [Figure 10] FIG. 10 is a schematic diagram of another example of providing system information by a network device according to the second embodiment of the present invention; [Figure 11] FIG. 10 is a schematic diagram illustrating an example of a system information providing device according to a third embodiment of the present invention. [Figure 12] FIG. 10 is a schematic block diagram of an example of a system configuration of a network device according to a fourth embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0038] The above and other features of the present invention will become apparent from the following description. In the specification and drawings, specific embodiments of the present invention are disclosed in detail, and some of the embodiments in which the principles of the present invention can be adopted are shown. However, the present invention is not limited to the described embodiments. The present invention includes all modifications, variations, and equivalents within the scope of the appended claims. Below, various embodiments of the present invention will be described with reference to the drawings. These embodiments are merely illustrative and do not limit the present invention.

[0039] In embodiments of the present invention, the terms "first," "second," etc. are used in titles to distinguish different elements, but do not represent the spatial arrangement or temporal order of these elements, and these elements are not limited to these terms. The term "and / or" includes any and all combinations of one or more of the terms listed in the associated list. The terms "comprise," "include," "have," etc. refer to the presence of listed features, elements, elements, or components, but do not exclude the presence or addition of one or more other features, elements, elements, or components.

[0040] In the embodiments of the present invention, the singular forms "one," "the," etc., include the plural and should be understood broadly as "one kind" or "one class," and are not limited to "one." Furthermore, the term "said" should be understood to include both the singular and the plural, unless the context clearly indicates otherwise. Furthermore, the term "described in" should be understood to mean "described at least in part," and the term "based on" should be understood to mean "based at least in part," unless the context clearly indicates otherwise.

[0041] In embodiments of the present invention, the terms "communication network" or "wireless communication network" may refer to a network conforming to any communication standard, such as, for example, Long Term Evolution (LTE), Long Term Evolution Advanced (LTE-A, LTE-Advanced), Wideband Code Division Multiple Access (WCDMA), High-Speed ​​Packet Access (HSPA), etc.

[0042] Additionally, communications between devices in a communications system may occur according to any stage of communications protocol, including, but not limited to, 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G, and future 5G, New Radio (NR), etc., and / or other currently known or future developed communications protocols.

[0043] In an embodiment of the present invention, the term "network device" refers to a device in a communication system that allows a terminal device to access the communication system and provides a service to the terminal device, and may include, but is not limited to, a base station (BS), an access point (AP), a transmission reception point (TRP), a broadcast transmitter, a mobility management entity (MME), a gateway, a server, a radio network controller (RNC), a base station controller (BSC), etc.

[0044] Here, the base station may include, but is not limited to, a Node B (NodeB or NB), an evolved Node B (eNodeB or eNB), a 5G base station (gNB), etc., as well as a remote radio head (RRH), a remote radio unit (RRU), a relay, or a low-power node (e.g., femto, pico, etc.). Also, the term "base station" may include some or all of these functions, and each base station may provide communication coverage for a particular geographic area. The term "cell" may refer to a base station and / or its coverage area, depending on the context in which the term is used.

[0045] In the embodiments of the present invention, the term "User Equipment" (UE) or "Terminal Equipment" (TE) refers to a device that accesses a communication network and receives network services via, for example, a network device. The terminal device may be fixed or mobile, and may also be referred to as a mobile station (MS), a terminal, a subscriber station (SS), an access terminal (AT), a station, etc. For example, it is a terminal device served by an IAB node or an IAB donor in the IAB architecture.

[0046] Here, the terminal device may include, but is not limited to, a cellular phone, a personal digital assistant (PDA), a wireless modulation / demodulation device, a wireless communication device, a handheld device, a machine-type communication device, a laptop computer, a cordless phone, a smartphone, a smart watch, a digital camera, etc.

[0047] For example, in a scenario such as the Internet of Things (IoT), the user equipment may be a monitoring or measuring device or apparatus, including, but not limited to, a Machine Type Communication (MTC) terminal, an in-vehicle communication terminal, a Device to Device (D2D) terminal, a Machine to Machine (M2M) terminal, etc.

[0048] In the embodiments of the present invention, "when...", "when...", "then...", and "if..." all mean based on some condition or state, and these expressions may be interchangeable with each other.

[0049] The following describes exemplary scenarios for embodiments of the present invention, but the present invention is not limited thereto.

[0050] FIG. 1 is a schematic diagram of an example of a communication system according to an embodiment of the present invention, and a terminal device and a network device are illustrated as an example. As shown in FIG. 1, a communication system 100 may include a network device 101 and a terminal device 102. For simplicity, FIG. 1 illustrates only one terminal device as an example. The network device 101 is, for example, a gNB, a network device of an NR. The gNB may include one gNB CU and one or more gNB DUs, and the gNB CU / DU has some of the functions of the gNB and is a logical node of the gNB. One gNB DU can support one or more cells, and one cell is supported by only one gNB DU.

[0051] In an embodiment of the present invention, existing services or services that can be implemented in the future can be performed between the network device 101 and the terminal device 102. For example, these services include, but are not limited to, enhanced mobile broadband (eMBB), massive machine type communication (mMTC), and ultra-reliable and low-latency communication (URLLC).

[0052] For example, the network device 101 provides system information to the terminal device 102. Fig. 2 is a schematic diagram of an example of providing system information by a network device. As shown in Fig. 2, the network device periodically broadcasts an MIB in the minimum system information on the BCH, and periodically broadcasts an SIB1 in the minimum system information on the DL-SCH. Alternatively, for example, the network device may unicast an SIB1 in the minimum system information on the DL-SCH, periodically broadcast an SIBn in other system information on the DL-SCH, broadcast an on-demand SIBn on the DL-SCH, unicast an SIBn on the DL-SCH, and unicast an on-demand SIBn on the DL-SCH.

[0053] In an embodiment of the present invention, the terminal device 102 can perform communication using a beam in a cell other than the serving cell (a non-serving cell). The following describes in detail a scenario of an embodiment of the present invention.

[0054] For example, in an inter-cell beam management scenario, the network device 101 serves the terminal device 102 via a serving cell and a cell other than the serving cell, i.e., a non-serving cell, which belongs to the same distributed unit (DU) of the network device 101.

[0055] 3 is a schematic diagram of an example of a scenario of inter-cell beam management according to an embodiment of the present invention. As shown in FIG. 3, a network device 101 configures a beam 1 in a serving cell (cell 1) and a beam 2 in a non-serving cell (cell 2) for a terminal device 102. As the terminal device 102 moves, the network device 101 communicates with the terminal device 102 sequentially using the beam 1 in the serving cell and the beam 2 in the non-serving cell.

[0056] As another example, in an inter-cell multi-TRP (mTRP) scenario, a network device serves a terminal device 102 via TRP-1 and TRP-2, where the two TRPs belong to different cells.

[0057] In an embodiment of the present invention, a TRP is a part of a network device that receives signals from and / or transmits signals to a terminal device. In multi-TRP (mTRP) operation, a serving cell can schedule a terminal device from two TRPs to provide better PDSCH coverage, reliability, and / or data rate. The two TRPs may belong to the same cell or different cells. In multi-TRP, there are two different operation modes: single DCI (Downlink Control Information) and multi-DCI. In these two modes, control of uplink and downlink operation is performed by the physical layer and MAC layer, with the configuration provided by the RRC layer. In single DCI mode, a terminal device is scheduled by both TRPs via the same DCI. In multi-DCI mode, a terminal device is scheduled by separate DCIs from each TRP.

[0058] 4 is a schematic diagram of an example of an inter-cell multi-TRP scenario according to an embodiment of the present invention. As shown in FIG. 4, a network device 101 includes at least TRP1 and TRP2. The network device 101 operates with a terminal device 102 via TRP1 and TRP2, where TRP1 and TRP2 belong to different cells having the same frequency in the same gNB DU, e.g., TRP1 belongs to cell 1 and TRP2 belongs to cell 2, and both cell 1 and cell 2 are supported by gNB DU1. TRP1 communicates with the terminal device 102 using panel 1 via link 1 using the beam of cell 1, and TRP2 communicates with the terminal device 102 using panel 2 via link 2 using the beam of cell 2.

[0059] 3 and 4, if the terminal device 102 receives downlink data on a dedicated channel using one beam or TRP and the PCI associated with this beam or TRP is different from the PCI of the serving cell (cell 1), the terminal device cannot simultaneously receive short messages and system information from the beam or TRP of the serving cell (cell 1). As a result, the terminal device 102 may lose updated system information and common alert system information, so the serving cell (cell 1) cannot provide service to the terminal device 102, and the terminal device 102 cannot obtain emergency information such as earthquakes and tsunamis.

[0060] Various embodiments of the present invention will now be described with reference to the drawings, which are merely illustrative and not limiting of the present invention.

[0061] Example 1 An embodiment of the present invention provides a method for providing system information, which is applied to a network device, for example, the network device 101 in FIGS.

[0062] 5 is a schematic diagram of an example of a system information providing method according to the first embodiment of the present invention. As shown in FIG. 5, the method includes the following steps:

[0063] Step 501: If a first condition is met, system information is sent to the terminal device that meets the first condition in a dedicated manner.

[0064] The first condition includes that the terminal device is receiving downlink data from a dedicated channel of a non-serving cell, or that cell information related to the active TCI state of reception of the downlink channel of the terminal device is different from the cell information of the serving cell.

[0065] For a terminal device that satisfies the first condition, according to the conventional mechanism, the terminal device cannot simultaneously receive short messages and system information from the beam or TRP of the serving cell, which may cause the terminal device to lose updated system information and common warning system information, making it impossible for the serving cell to provide service to the terminal device and preventing the terminal device from obtaining emergency information such as earthquakes and tsunamis. Therefore, in an embodiment of the present invention, for a terminal device that satisfies the first condition, system information is transmitted to the terminal device in a dedicated manner, so that the terminal device can simultaneously receive system information from the beam or TRP of the serving cell, allowing the serving cell to provide appropriate service to the terminal device and allowing the terminal device to quickly obtain warning information.

[0066] In the embodiment of the present invention, the terminal device that satisfies the first condition is, for example, a terminal device in a connected state that satisfies the first condition.

[0067] In step 501, if a first condition is met, the system information is transmitted to the terminal device that meets the first condition in a dedicated manner, i.e., the system information is transmitted to the terminal device that meets the first condition in a dedicated manner.

[0068] In an embodiment of the present invention, the system information may include at least one of an MIB from the serving cell, an SIB1 from the serving cell, PWS information from the serving cell, and an SIB from the serving cell requested by the terminal device.

[0069] In the embodiment of the present invention, a non-serving cell means a cell other than the serving cell.

[0070] In an embodiment of the present invention, the first condition is that the terminal device receives downlink data from a dedicated channel of a non-serving cell, where the dedicated channel refers to a channel specific to the terminal, such as a dedicated control channel (DCCH).

[0071] For example, the downlink channel includes at least one of a PDCCH and a PDSCH.

[0072] In an embodiment of the present invention, the terminal device receiving downlink data from a dedicated channel of a non-serving cell may include the terminal device receiving downlink data from a dedicated channel of a TRP or beam whose cell information is different from the cell information of the serving cell.

[0073] In an embodiment of the present invention, for a TRP whose cell information is different from that of the serving cell, the network device configures a control resource set pool (coreset pool), and the cell information associated with the control resource set pool is different from that of the serving cell; alternatively, the network device configures a control resource set pool, and the reference signal associated with the control resource set pool is associated with cell information, and the cell information is different from that of the serving cell.

[0074] In an embodiment of the present invention, for a beam whose cell information is different from the cell information of the serving cell, the network device configures a reference signal, and the cell information associated with the reference signal is different from the cell information of the serving cell, or the network device configures a TCI state, and the cell information associated with the TCI state is different from the cell information of the serving cell, or the network device configures a TCI state, and the reference signal associated with the TCI state is associated with cell information, and the cell information is different from the cell information of the serving cell.

[0075] In an embodiment of the present invention, the cell information may include at least one of a physical cell identifier (PCI), a cell identifier (CellIdentity), and a cell index (CellIndex).

[0076] For example, the network provides a set of cell identifiers (CellIdentity), where CellIndex is the sequence number in which the cell identifiers appear, e.g., the cell index of the first cell to appear is 0 (or 1), the index of the second cell to appear is 1 (or 2), and so on.

[0077] The first condition may be that the cell information associated with the active TCI state of reception of the downlink channel of the terminal device is different from the cell information of the serving cell.

[0078] In the embodiment of the present invention, the TCI state may be a unified TCI state, a TCI state of PDCCH reception or a downlink TCI state.

[0079] In an embodiment of the present invention, the cell information may include at least one of a physical cell identifier (PCI), a cell identifier (CellIdentity), and a cell index (CellIndex).

[0080] For example, the network provides a set of cell identifiers (CellIdentity), where CellIndex is the sequence number in which the cell identifiers appear, e.g., the cell index of the first cell to appear is 0 (or 1), the index of the second cell to appear is 1 (or 2), and so on.

[0081] In an embodiment of the present invention, the cell information related to the active TCI state of reception of the downlink channel of the terminal device being different from the cell information of the serving cell includes the TCI state including a reference signal different from that of the serving cell, or the TCI state including cell information different from that of the serving cell.

[0082] In an embodiment of the present invention, the TCI state including a reference signal different from that of the serving cell may include the TCI state including one or more quasi-colocation (QCL) types.

[0083] For example, the QCL type applies QCL information, and the QCL information includes a reference signal of a non-serving cell, that is, a reference signal of one cell other than the serving cell.

[0084] In an embodiment of the present invention, the TCI status including cell information different from the serving cell may include the TCI status including one or more QCL types.

[0085] For example, the QCL type applies QCL information, and the QCL information includes a reference signal of a non-serving cell.

[0086] In an embodiment of the present invention, the cell information may include at least one of a physical cell identifier (PCI), a cell identifier (CellIdentity), and a cell index (CellIndex).

[0087] For example, the network provides a set of cell identifiers (CellIdentity), where CellIndex is the sequence number in which the cell identifiers appear, e.g., the cell index of the first cell to appear is 0 (or 1), the index of the second cell to appear is 1 (or 2), and so on.

[0088] In step 501, for the terminal device, in addition to the first condition being satisfied, a further constraint may be introduced, for example, if the first condition is satisfied and the second condition is satisfied, the system information is transmitted to the terminal device in a dedicated manner.

[0089] In an embodiment of the present invention, the second condition may include at least one of the following: system information has been changed; the terminal device has requested the provision of system information; a first timer has timed out; and a previous successful transmission of the system information, a previous successful reception of an acknowledgment of the successful reception of the system information from the terminal device, or the terminal device has received downlink data from a dedicated channel of a non-serving cell, or after a first time threshold has been reached that the cell information associated with the active TCI state differs from the cell information of the serving cell.

[0090] In an embodiment of the present invention, the second condition may include that the system information has been changed. When the first condition is met and the second condition is met, the system information is transmitted to the terminal device that satisfies the first condition in a dedicated manner. At a first time point t1, the network device notifies the terminal devices in idle state, inactive state and connected state of the change of system information and / or warning information indication via a short message, and sends a system message corresponding to the warning information, such as an ETWS / CMAS indication, to the terminal devices in connected state that meet a first condition in a dedicated manner; and / or At a second time point t2, the network device may broadcast an updated system message and transmit the updated system information in a dedicated manner to connected terminal devices that satisfy the first condition.

[0091] Here, the first time point t1 is within a modification period, and the second time point t2 is within a modification period after the modification period, i.e., t1 is within the nth modification period, and t2 is within the n+1th modification period, or within the n+2th modification period, ..., or within the n+mth modification period, where n and m are natural numbers.

[0092] For example, the warning information indication may include an ETWS and / or a CMAS indication.

[0093] In an embodiment of the present invention, the terminal device in the idle state, inactive state and connected state may be a terminal device in the RRC idle state (RRC_IDLE), the RRC inactive state (RRC_INACTIVE) or the RRC connected state (RRC_CONNECTED).

[0094] In an embodiment of the present invention, the second condition may further include the terminal device requesting the provision of system information, wherein the terminal device requesting the provision of system information includes at least one of the following: an on-demand system information request being configured by the network device for the terminal device; the terminal device requesting on-demand system information from the network device; a request for transmitting system information in a dedicated manner being configured by the network device for the terminal device; and the terminal device requesting the network device to transmit system information in a dedicated manner.

[0095] In an embodiment of the present invention, configuring an on-demand system information request for the terminal device by the network device may include including a field or IE indicating the on-demand system information request in an RRC reconfiguration message, for example including an onDemandSIB-Request in the RRCReconfiguration message.

[0096] In an embodiment of the present invention, configuring by the network device a request for transmitting system information in a dedicated manner for the terminal device may include adding a new field or a new IE to the RRC reconfiguration message.

[0097] For example, if a new field or a new IE exists, or if a field or IE (a field or IE indicating an on-demand system information request) is included in the RRC reconfiguration message, a connected terminal device is permitted to request system information on-demand, or a connected terminal device is permitted to request the network device to transmit system information in a dedicated manner.

[0098] In an embodiment of the present invention, the terminal device requesting the network device to transmit system information in a dedicated manner may include the terminal device in a connected state obtaining an SIB or a posSIB.

[0099] In an embodiment of the present invention, the terminal device requesting the network device to transmit system information in a dedicated manner may further include the terminal device initiating a dedicated system information request if the second timer times out, is not configured, or is not operating.

[0100] In an embodiment of the present invention, the second timer not running includes other timer states other than running, such as timeout or stopped.

[0101] In an embodiment of the present invention, the second timer is used to control and / or prohibit the terminal device from requesting the network device to transmit system information in a dedicated manner.

[0102] For example, the second timer may be timer T350 or may be a timer other than T350.

[0103] The value of the second timer may be configured by the network or may be a multiple of the value of T350, such as 0.5, 1, or 2 times.

[0104] In an embodiment of the present invention, the terminal device's request to the network device to transmit system information in a dedicated manner may further include the terminal device starting a second timer. For example, if the network configures the second timer, the terminal device starts the second timer.

[0105] For example, when system information transmitted in a dedicated manner is received, or when a field or IE indicating an on-demand system information request, or a new field or IE (a new field or IE added to the RRC reconfiguration message) is configured to be released, the terminal device stops the second timer.

[0106] For example, while the second timer is running, the terminal device does not request the network device to transmit system information in a dedicated manner.

[0107] In an embodiment of the present invention, the second condition may further include a timeout of the first timer, for example, the first timer being a valid timer.

[0108] In an embodiment of the present invention, the first timer may be started when the transmission of the system information is successful, when the terminal device starts receiving downlink data from a dedicated channel of a non-serving cell, when cell information related to the active TCI state of the downlink channel of the terminal device differs from the cell information of the serving cell, or when an acknowledgment of successful reception of the system information is received from the terminal device.

[0109] For example, system information is transmitted to the terminal devices by broadcast or dedicated messages.

[0110] In an embodiment of the present invention, the time of the first timer may be less than or equal to the second time threshold.

[0111] For example, the second time threshold may be set according to the actual situation, for example, if the second time threshold is 3 hours, the time of the first timer is, for example, 1 hour.

[0112] In an embodiment of the present invention, the second condition may further include at least one of the following: a previous successful transmission of system information, a previous successful reception of an acknowledgment of successful reception of system information from the terminal device, or the terminal device receiving downlink data from a dedicated channel of a non-serving cell, or after a first time threshold is reached that the cell information associated with the active TCI state differs from the cell information of the serving cell.

[0113] In an embodiment of the present invention, the first time threshold may be set according to circumstances, for example, the first time threshold is 3 hours.

[0114] According to this embodiment, when a terminal device receives downlink data from a dedicated channel of a non-serving cell, or when the cell information related to the active TCI status of the downlink channel reception of the terminal device is different from the cell information of the serving cell, system information is transmitted to the terminal device in a dedicated manner, so that the terminal device can quickly obtain system information from the serving cell from the beam or TRP of the non-serving cell, so that the serving cell can properly provide service to the terminal device, and the terminal device can quickly obtain alert information and take action to avoid damage to people and property.

[0115] <Example 2> An embodiment of the present invention provides a system information providing method, which is applied to a terminal device and a network device. This method corresponds to the system information providing method applied to a network device described in the first embodiment, and the overlapping description of the similar contents will be omitted.

[0116] 6 is a schematic diagram of an example of a method for providing system information according to Example 2 of the present invention. As shown in FIG. 6, the method includes the following steps:

[0117] Step 601: A terminal device receives downlink data from a dedicated channel of a non-serving cell.

[0118] Step 602: Send system information to the terminal device in a dedicated manner.

[0119] 7 is a schematic diagram of another example of a method for providing system information according to Example 2 of the present invention. As shown in FIG. 7, the method includes the following steps:

[0120] Step 701: The downlink channel of the terminal device receives an active TCI state, and the cell information associated with the TCI state is different from the cell information of the serving cell.

[0121] Step 702: Send system information to the terminal device in a dedicated manner.

[0122] Fig. 8 is a schematic diagram of an example of system information provided by a network device according to a second embodiment of the present invention. Fig. 9 is a schematic diagram of another example of system information provided by a network device according to a second embodiment of the present invention. Fig. 10 is a schematic diagram of another example of system information provided by a network device according to a second embodiment of the present invention.

[0123] As shown in Figure 8, in contrast to the conventional mechanism shown in Figure 2, in the embodiment of the present invention, the network device providing system information may further include unicasting the MIB on the DL-SCH. This step is an optional step and is indicated by a dashed line in Figure 8.

[0124] As shown in Figure 9, in contrast to the conventional mechanism shown in Figure 2, in the embodiment of the present invention, the network device providing system information may further include unicasting a MIB over the DL-SCH, unicasting a MIB on demand over the DL-SCH, and unicasting SIB1 on demand over the DL-SCH. The method of unicasting a MIB and / or SIB1 on demand over the DL-SCH reuses the method of unicasting SIBn on demand over the DL-SCH. These steps are optional and are indicated by dashed lines in Figure 9.

[0125] As shown in Figure 10, compared to the conventional mechanism shown in Figure 2, in this embodiment of the present invention, the network device providing system information may further include unicasting a MIB over DL-SCH, unicasting a MIB on demand over DL-SCH, unicasting SIB1 on demand over DL-SCH, and unicasting SIBn on demand over DL-SCH. For the implementation of unicasting a MIB, SIB1, and SIBn on demand over DL-SCH, please refer to the related description in Example 1. This step is an optional step and is indicated by a dashed line in Figure 10.

[0126] In the embodiment of the present invention, the specific implementation of each of the above steps may refer to the relevant description in the first embodiment, and the overlapping description will be omitted here.

[0127] According to this embodiment, when a terminal device receives downlink data from a dedicated channel of a non-serving cell, or when the cell information related to the active TCI status of the downlink channel reception of the terminal device is different from the cell information of the serving cell, system information is transmitted to the terminal device in a dedicated manner, so that the terminal device can quickly obtain system information from the serving cell from the beam or TRP of the non-serving cell, so that the serving cell can properly provide service to the terminal device, and the terminal device can quickly obtain alert information and take action to avoid damage to people and property.

[0128] Example 3 An embodiment of the present invention provides a system information providing device, which is applied to a network device. The problem-solving principle of the device is similar to that of the method of the first embodiment, so that the specific implementation of the device may refer to the implementation of the method of the first embodiment, and the overlapping content will not be described again.

[0129] 11 is a schematic diagram of an example of a system information providing device according to a third embodiment of the present invention. As shown in FIG.

[0130] When a first condition is satisfied, the first transmitting unit 1101 transmits system information to the terminal device that satisfies the first condition in a dedicated manner.

[0131] The first condition includes that the terminal device is receiving downlink data from a dedicated channel of a non-serving cell, or that cell information related to the active TCI state of reception of the downlink channel of the terminal device is different from the cell information of the serving cell.

[0132] In other words, when the first condition is satisfied, the first transmitting unit 1101 transmits the system information to the terminal device that satisfies the first condition in a dedicated manner.

[0133] In an embodiment of the present invention, the system information may include at least one of an MIB from the serving cell, an SIB1 from the serving cell, PWS information from the serving cell, and an SIB from the serving cell requested by the terminal device.

[0134] In an embodiment of the present invention, if a first condition is met and a second condition is met, system information may be transmitted in a dedicated manner to the terminal device that meets the first condition.

[0135] In an embodiment of the present invention, the second condition may include at least one of the following: system information has been changed; the terminal device has requested the provision of system information; a first timer has timed out; and a previous successful transmission of the system information, a previous successful reception of an acknowledgment of the successful reception of the system information from the terminal device, or the terminal device has received downlink data from a dedicated channel of a non-serving cell, or after a first time threshold has been reached that the cell information associated with the active TCI state differs from the cell information of the serving cell.

[0136] In an embodiment of the present invention, the second condition includes that the system information has been changed. When the first condition is met and the second condition is met, transmitting the system information to the terminal device satisfying the first condition in a dedicated manner includes, at the first time point, the network device notifying the terminal device in an idle state, an inactive state, and a connected state of the change in the system information and / or the warning information indication via a short message, and transmitting a system message corresponding to the warning information to the terminal device in a connected state that satisfies the first condition in a dedicated manner; and / or, at the second time point, the network device broadcasting an updated system message and transmitting the updated system information to the terminal device in a connected state that satisfies the first condition in a dedicated manner. Here, the first time point is within a modification period, and the second time point is within a modification period after the modification period.

[0137] In an embodiment of the present invention, the terminal device requesting the provision of system information may include at least one of: an on-demand system information request being configured by the network device for the terminal device; the terminal device requesting on-demand system information from the network device; a request for the terminal device to transmit system information in a dedicated manner being configured by the network device; and the terminal device requesting the network device to transmit system information in a dedicated manner.

[0138] In an embodiment of the present invention, configuring an on-demand system information request for a terminal device by a network device may include including a field or IE in an RRC reconfiguration message indicating an on-demand system information request.

[0139] In an embodiment of the present invention, configuring by the network device a request for transmitting system information in a dedicated manner for the terminal device may include adding a new field or a new IE to the RRC reconfiguration message.

[0140] In an embodiment of the present invention, if a new field or a new IE exists or if the field or IE is included in the RRC reconfiguration message, a connected terminal device is permitted to request system information on demand, or a connected terminal device is permitted to request the network device to transmit system information in a dedicated manner.

[0141] In an embodiment of the present invention, the terminal device requesting the network device to transmit system information in a dedicated manner may include the terminal device in a connected state obtaining an SIB or a posSIB.

[0142] In an embodiment of the present invention, the terminal device requesting the network device to transmit system information in a dedicated manner may include the terminal device initiating a dedicated system information request if the second timer times out, is not configured, or is not operating.

[0143] In an embodiment of the present invention, the terminal device requesting the network device to transmit system information in a dedicated manner may include the terminal device starting a second timer.

[0144] In an embodiment of the present invention, when system information transmitted in a dedicated manner is received, or when a field or IE indicating an on-demand system information request, or a new field or new IE is configured to be released, the terminal device stops the second timer.

[0145] In the embodiment of the present invention, while the second timer is running, the terminal device does not request the network device to transmit system information in a dedicated manner.

[0146] In an embodiment of the present invention, the second timer is used to control and / or prohibit the terminal device from requesting the network device to transmit system information in a dedicated manner.

[0147] In an embodiment of the present invention, a first timer is started when the transmission of system information is successful, when the terminal device starts receiving downlink data from a dedicated channel of a non-serving cell, when cell information related to the active TCI state of the downlink channel of the terminal device differs from the cell information of the serving cell, or when an acknowledgment of successful reception of the system information is received from the terminal device.

[0148] In an embodiment of the present invention, the system information may be transmitted to the terminal devices by broadcast or dedicated messages.

[0149] In an embodiment of the present invention, the time of the first timer may be less than or equal to the second time threshold.

[0150] In an embodiment of the present invention, the terminal device receiving downlink data from a dedicated channel of a non-serving cell may include the terminal device receiving downlink data from a dedicated channel of a TRP or beam whose cell information is different from the cell information of the serving cell.

[0151] In an embodiment of the present invention, for a TRP whose cell information is different from that of the serving cell, the network device configures a control resource set pool (coreset pool), and the cell information associated with the control resource set pool is different from that of the serving cell; alternatively, the network device configures a control resource set pool, and the reference signal associated with the control resource set pool is associated with cell information, and the cell information is different from that of the serving cell.

[0152] In an embodiment of the present invention, for a beam whose cell information is different from the cell information of the serving cell, the network device configures a reference signal, and the cell information associated with the reference signal is different from the cell information of the serving cell, or the network device configures a TCI state, and the cell information associated with the TCI state is different from the cell information of the serving cell, or the network device configures a TCI state, and the reference signal associated with the TCI state is associated with cell information, and the cell information is different from the cell information of the serving cell.

[0153] In the embodiment of the present invention, the TCI state may be a unified TCI state, a TCI state of PDCCH reception or a downlink TCI state.

[0154] In an embodiment of the present invention, the cell information related to the active TCI state of reception of the downlink channel of the terminal device being different from the cell information of the serving cell may include the TCI state including a reference signal different from that of the serving cell, or the TCI state including cell information different from that of the serving cell.

[0155] In an embodiment of the present invention, the TCI state including a reference signal different from that of the serving cell may include the TCI state including one or more QCL types.

[0156] In an embodiment of the present invention, the QCL type applies QCL information, and the QCL information includes a reference signal of a non-serving cell.

[0157] In an embodiment of the present invention, the TCI status including cell information different from the serving cell includes the TCI status including one or more QCL types.

[0158] In an embodiment of the present invention, the QCL type applies QCL information, and the QCL information includes a reference signal of a non-serving cell.

[0159] In an embodiment of the present invention, the cell information may include at least one of a physical cell identifier (PCI), a cell identifier (CellIdentity), and a cell index.

[0160] For the specific functions of the above-mentioned units in the embodiment of the present invention, the descriptions of the relevant steps in the first and second embodiments may be referred to, and redundant descriptions will be omitted here.

[0161] According to this embodiment, when a terminal device receives downlink data from a dedicated channel of a non-serving cell, or when the cell information related to the active TCI status of the downlink channel reception of the terminal device is different from the cell information of the serving cell, system information is transmitted to the terminal device in a dedicated manner, so that the terminal device can quickly obtain system information from the serving cell from the beam or TRP of the non-serving cell, so that the serving cell can properly provide service to the terminal device, and the terminal device can quickly obtain alert information and take action to avoid damage to people and property.

[0162] Example 4 An embodiment of the present invention further provides a network device, which includes the system information providing means according to the third embodiment.

[0163] Fig. 12 is a schematic block diagram of an example of a system configuration of a network device according to a fourth embodiment of the present invention. As shown in Fig. 12, the network device 1200 may include a processor (central processing unit: CPU) 1210 and a memory 1220, and the memory 1220 is connected to the processor 1210. The memory 1220 may store various data, and may further store an information processing program 1230, and executes the program 1230 under the control of the processor 1210 to receive various information transmitted by a terminal device and transmit various information to the terminal device.

[0164] In one aspect, the functionality of the system information providing device may be integrated into the processor 1210. Here, the processor 1210 may be configured to transmit system information in a dedicated manner to a terminal device that satisfies a first condition when the first condition is met, where the first condition includes that the terminal device is receiving downlink data from a dedicated channel of a non-serving cell, or that cell information associated with an active TCI state of reception of a downlink channel of the terminal device is different from the cell information of the serving cell.

[0165] In another aspect, the system information providing device may be configured separately from the processor 1210. For example, the system information providing device may be configured as a chip connected to the processor 1210, and the functions of the system information providing device are realized under the control of the processor 1210.

[0166] 12, the network device 1200 may further include a transceiver 1240 and an antenna 1250. The functions of the above components are similar to those of the prior art, and the description thereof will be omitted here. The network device 1200 does not need to include all the units shown in FIG. 12. The network device 1200 may further include units not shown in FIG. 12, and the prior art may be referred to.

[0167] According to this embodiment, when a terminal device receives downlink data from a dedicated channel of a non-serving cell, or when the cell information related to the active TCI status of the downlink channel reception of the terminal device is different from the cell information of the serving cell, system information is transmitted to the terminal device in a dedicated manner, so that the terminal device can quickly obtain system information from the serving cell from the beam or TRP of the non-serving cell, so that the serving cell can properly provide service to the terminal device, and the terminal device can quickly obtain alert information and take action to avoid damage to people and property.

[0168] <Example 5> An embodiment of the present invention provides a communication system, which includes the network device described in embodiment 4 and may further include a terminal device. For specific details, please refer to the descriptions in embodiments 1 and 4.

[0169] For example, the configuration of the communication system may refer to Fig. 1. As shown in Fig. 1, the communication system 100 includes a network device 101 and a terminal device 102. The network device 101 is the same as the network device described in the fourth embodiment, and therefore, the description of the overlapping contents will be omitted.

[0170] The above-described apparatus and methods of the present invention may be realized by hardware or a combination of hardware and software. The present invention relates to a computer-readable program that, when executed by a logic unit, causes the logic unit to implement the above-described apparatus or components, or to implement the above-described various methods or steps. The logic unit may be, for example, a field programmable logic unit, a microprocessor, or a processor used in a computer. The present invention also relates to a storage medium for storing the above-described program, for example, a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, etc.

[0171] Each processing method in each device described with reference to the embodiments of the present invention may be implemented by hardware, software modules executed by a processor, or a combination of both. For example, one or more of the functional block diagrams shown in FIG. 11 or one or more combinations of functional block diagrams may correspond to each software module in the computer program flow or each hardware module. These software modules may correspond to each step shown in FIG. 5. These hardware modules may be implemented by implementing these software modules in hardware using, for example, a field programmable gate array (FPGA).

[0172] The software module may be located in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, mobile hard disk, CD-ROM, or any other form of storage medium known to those skilled in the art. The storage medium may be connected to the processor so that the processor reads information from or writes information to the storage medium, or the storage medium may be a component of the processor. The processor and the storage medium may be located in an ASIC. The software module may be stored in the memory of the mobile terminal or in a memory card inserted into the mobile terminal. For example, if a device (e.g., a mobile terminal) uses a relatively large-capacity MEGA-SIM card or a large-capacity flash memory device, the software module may be stored in the MEGA-SIM card or the large-capacity flash memory device.

[0173] 11 may be implemented with 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 device, a discrete gate or transistor logic device, a discrete hardware component, or any suitable combination thereof to perform the functions described herein. One or more of the functional blocks and / or one or more combinations of functional blocks in the functional block diagram of FIG. 11 may be implemented with, for example, a combination of computing devices, such as a combination of a DSP and a microprocessor, a combination of multiple microprocessors, one or more microprocessors in combination with a DSP communication, or any other configuration.

[0174] Although the present invention has been described above with reference to specific embodiments, the above description is merely illustrative and does not limit the scope of protection of the present invention. Various modifications and changes may be made to the present invention without departing from the spirit and principles of the present invention, and these modifications and changes are also within the scope of the present invention.

[0175] Furthermore, the following supplementary notes are disclosed regarding the embodiments including the above examples. (Appendix 1) (Appendix 1) A system information providing device applied to a network device, comprising: a first transmitting unit that, when a first condition is satisfied, transmits system information to a terminal device that satisfies the first condition in a dedicated manner; The device, wherein the first condition includes that the terminal device is receiving downlink data from a dedicated channel of a non-serving cell, or that cell information related to an active TCI state of reception of the downlink channel of the terminal device is different from cell information of a serving cell. (Appendix 2) The system information includes: MIB from the serving cell, SIB1 from serving cells, PWS information from the serving cell, and An apparatus as described in Supplementary Note 1, including at least one of the SIBs from the serving cell requested by the terminal device. (Appendix 3) 3. The device of claim 1, wherein if the first condition is met and the second condition is met, the system information is transmitted in a dedicated manner to the terminal device that meets the first condition. (Appendix 4) The second condition is: System information has changed, the terminal device is requesting the provision of system information; that the first timer has timed out; and The apparatus of Supplementary Note 3 includes at least one of a previous successful transmission of system information, a previous successful reception of an acknowledgment of successful reception of system information from the terminal device, or after the terminal device has received downlink data from a dedicated channel of a non-serving cell, or after a first time threshold has been reached that cell information associated with an active TCI state differs from the cell information of the serving cell. (Appendix 5) the second condition includes the system information being changed; When the first condition is satisfied and the second condition is satisfied, the system information is transmitted to the terminal device that satisfies the first condition in a dedicated manner, At a first time point, the network device notifies the terminal devices in idle state, inactive state and connected state of a change in system information and / or a warning information indication via a short message, and sends a system message corresponding to the warning information to the terminal devices in connected state that meet the first condition in a dedicated manner; and / or At a second time point, the network device broadcasts an updated system message and transmits the updated system information to the connected terminal devices that satisfy the first condition in a dedicated manner; the first time point is within a change period; 5. The apparatus of claim 4, wherein the second point in time is within a modification period after the modification period. (Appendix 6) The terminal device is requesting the provision of system information, an on-demand system information request is configured by a network device for the terminal device; the terminal device requests on-demand system information from a network device; a request for transmitting system information in a dedicated manner for the terminal device is configured by the network device; and The apparatus of claim 4, further comprising at least one of the terminal device requesting the network device to transmit system information in a dedicated manner. (Appendix 7) The on-demand system information request for the terminal device is configured by the network device, including a field or IE in the RRC reconfiguration message indicating an on-demand system information request; and / or The request for transmitting system information in a dedicated manner for the terminal device is configured by the network device, 7. The apparatus of claim 6, comprising adding a new field or a new IE to an RRC reconfiguration message. (Appendix 8) The device described in Supplementary Note 7, wherein, if the new field or the new IE exists or if the field or IE is included in the RRC reconfiguration message, the terminal device in a connected state is permitted to request system information on demand, or the terminal device in a connected state is permitted to request the network device to send system information in a dedicated manner. (Appendix 9) The terminal device requests the network device to transmit system information in a dedicated manner, 7. The apparatus of claim 6, comprising a terminal device in a connected state obtaining a SIB or a posSIB. (Appendix 10) The terminal device requests the network device to transmit system information in a dedicated manner, 10. The apparatus of claim 6 or 9, comprising: if a second timer times out, is not configured, or is not running, the terminal device initiates a dedicated system information request. (Appendix 11) The terminal device requests the network device to transmit system information in a dedicated manner, 11. The apparatus of claim 6, 9, or 10, further comprising the terminal device starting a second timer. (Appendix 12) 12. The apparatus of claim 10 or 11, wherein the terminal device stops the second timer when it receives system information transmitted in a dedicated manner or when the field or IE indicating an on-demand system information request, or the new field or IE, is configured to be released. (Appendix 13) 13. An apparatus as described in any of appendixes 10 to 12, wherein while the second timer is running, the terminal device does not request the network device to transmit system information in a dedicated manner. (Appendix 14) 14. The apparatus of any of Supplementary Notes 10 to 13, wherein the second timer is used to control and / or prohibit the terminal device from requesting the network device to transmit system information in a dedicated manner. (Appendix 15) The apparatus of Supplementary Note 4 starts the first timer when the transmission of system information is successful, when the terminal device starts receiving downlink data from a dedicated channel of a non-serving cell, when cell information related to the active TCI state of the downlink channel of the terminal device differs from the cell information of the serving cell, or when an acknowledgment of successful reception of the system information is received from the terminal device. (Appendix 16) 16. The apparatus of claim 15, wherein the system information is transmitted to terminal devices by broadcast or dedicated messages. (Appendix 17) 5. The apparatus of claim 4, wherein the time of the first timer is less than or equal to a second time threshold. (Appendix 18) The terminal device receiving downlink data from a dedicated channel of a non-serving cell is The device described in Supplementary Note 1, wherein the terminal device receives downlink data from a dedicated channel of a TRP or beam whose cell information is different from the cell information of the serving cell. (Appendix 19) For a TRP whose cell information is different from the cell information of the serving cell, The network device configures a control resource set pool (coreset pool), and the cell information associated with the control resource set pool is different from the cell information of the serving cell; or 19. The apparatus of claim 18, wherein the network device configures a control resource set pool, and wherein a reference signal associated with the control resource set pool is associated with cell information, the cell information being different from cell information of a serving cell. (Appendix 20) For beams where the cell information is different from the cell information of a serving cell, The network device configures a reference signal, and the cell information associated with the reference signal is different from the cell information of the serving cell; or The network device configures a TCI state, and the cell information associated with the TCI state is different from the cell information of the serving cell; or 19. The apparatus of claim 18, wherein the network device configures a TCI state, and wherein a reference signal associated with the TCI state is associated with cell information, the cell information being different from the cell information of a serving cell. (Appendix 21) 21. The apparatus of any of Supplementary Notes 1, 4, 5 and 20, wherein the TCI state is a unified TCI state, a TCI state for PDCCH reception or a downlink TCI state. (Appendix 22) The cell information related to the active TCI state of reception of the downlink channel of the terminal device is different from the cell information of the serving cell, The TCI state includes a reference signal different from that of the serving cell; or 22. The apparatus of claim 1 or 21, wherein the TCI status includes cell information different from the serving cell. (Appendix 23) The TCI state includes a reference signal different from that of the serving cell. 23. The apparatus of claim 22, wherein the TCI state includes one or more QCL types. (Appendix 24) 24. The apparatus of claim 23, wherein the QCL type applies QCL information, and the QCL information includes a reference signal of a non-serving cell. (Appendix 25) The TCI status includes cell information different from the serving cell, 23. The apparatus of claim 22, wherein the TCI state includes one or more QCL types. (Appendix 26) 26. The apparatus of claim 25, wherein the QCL type applies QCL information, and the QCL information includes a reference signal of a non-serving cell. (Appendix 27) 27. The apparatus of any one of Supplementary Notes 1 to 26, wherein the cell information includes at least one of a physical cell identifier (PCI), a cell identifier (CellIdentity), and a cell index. (Appendix 28) 28. A network device comprising a device according to any one of claims 1 to 27. (Appendix 29) A communication system comprising the network device according to claim 28 and a terminal device. (Appendix 2) (Appendix 1) A system information providing method applied to a network device, comprising: When a first condition is satisfied, transmitting system information to the terminal device satisfying the first condition in a dedicated manner; The method, wherein the first condition includes that the terminal device is receiving downlink data from a dedicated channel of a non-serving cell, or that cell information related to an active TCI state of reception of the downlink channel of the terminal device is different from cell information of the serving cell. (Appendix 2) The system information includes: MIB from the serving cell, SIB1 from serving cells, PWS information from the serving cell, and The method described in Supplementary Note 1, including at least one of the SIBs from the serving cell requested by the terminal device. (Appendix 3) When a first condition is satisfied, the step of transmitting system information to a terminal device satisfying the first condition in a dedicated manner includes: 3. The method of claim 1, further comprising: when the first condition is met and the second condition is met, transmitting the system information to the terminal device that satisfies the first condition in a dedicated manner. (Appendix 4) The second condition is: System information has changed, the terminal device is requesting the provision of system information; that the first timer has timed out; and The method of claim 3, including at least one of the following: a previous successful transmission of system information, a previous successful reception of an acknowledgment of successful reception of system information from the terminal device, or after the terminal device has received downlink data from a dedicated channel of a non-serving cell, or after a first time threshold has been reached that cell information associated with an active TCI state differs from the cell information of the serving cell. (Appendix 5) the second condition includes the system information being changed; When the first condition is satisfied and the second condition is satisfied, the system information is transmitted to the terminal device that satisfies the first condition in a dedicated manner, At a first time point, the network device notifies the terminal devices in idle state, inactive state and connected state of a change in system information and / or a warning information indication via a short message, and sends a system message corresponding to the warning information to the terminal devices in connected state that meet the first condition in a dedicated manner; and / or At a second time point, the network device broadcasts an updated system message and transmits the updated system information to the connected terminal devices that satisfy the first condition in a dedicated manner; the first time point is within a change period; 5. The method of claim 4, wherein the second time point is within a modification period subsequent to the modification period. (Appendix 6) The terminal device is requesting the provision of system information, an on-demand system information request is configured by a network device for the terminal device; the terminal device requests on-demand system information from a network device; a request for transmitting system information in a dedicated manner for the terminal device is configured by the network device; and 5. The method of claim 4, including at least one of the terminal device requesting the network device to transmit system information in a dedicated manner. (Appendix 7) The on-demand system information request for the terminal device is configured by the network device, including a field or IE in the RRC reconfiguration message indicating an on-demand system information request; and / or The request for transmitting system information in a dedicated manner for the terminal device is configured by the network device, 7. The method of claim 6, comprising adding a new field or a new IE to an RRC reconfiguration message. (Appendix 8) The method described in Supplementary Note 7, wherein, if the new field or the new IE exists or if the field or IE is included in the RRC reconfiguration message, the terminal device in a connected state is permitted to request system information on demand, or the terminal device in a connected state is permitted to request the network device to transmit system information in a dedicated manner. (Appendix 9) The terminal device requests the network device to transmit system information in a dedicated manner, 7. The method of claim 6, comprising a terminal device in a connected state obtaining a SIB or a posSIB. (Appendix 10) The terminal device requests the network device to transmit system information in a dedicated manner, 10. The method of claim 6 or 9, comprising the terminal device initiating a dedicated system information request if the second timer times out, is not configured, or is not running. (Appendix 11) The terminal device requests the network device to transmit system information in a dedicated manner, 11. The method of claim 6, 9, or 10, comprising the terminal device starting a second timer. (Appendix 12) 12. The method according to claim 10 or 11, wherein the terminal device stops the second timer when it receives system information transmitted in a dedicated manner or when the field or IE indicating an on-demand system information request, or the new field or IE, is configured to be released. (Appendix 13) 13. A method according to any one of appendices 10 to 12, wherein while the second timer is running, the terminal device does not request the network device to transmit system information in a dedicated manner. (Appendix 14) 14. The method of any of Supplementary Notes 10 to 13, wherein the second timer is used to control and / or prohibit the terminal device from requesting the network device to transmit system information in a dedicated manner. (Appendix 15) The method described in Supplementary Note 4, wherein the first timer is started when the transmission of system information is successful, when the terminal device starts receiving downlink data from a dedicated channel of a non-serving cell, when cell information related to the active TCI state of the downlink channel of the terminal device differs from the cell information of the serving cell, or when an acknowledgment of successful reception of the system information is received from the terminal device. (Appendix 16) 16. The method of claim 15, wherein the system information is transmitted to the terminal device by broadcast or dedicated message. (Appendix 17) 5. The method of claim 4, wherein the time of the first timer is less than or equal to a second time threshold. (Appendix 18) The terminal device receiving downlink data from a dedicated channel of a non-serving cell is The method described in Supplementary Note 1, including the terminal device receiving downlink data from a dedicated channel of a TRP or beam whose cell information is different from the cell information of the serving cell. (Appendix 19) For a TRP whose cell information is different from the cell information of the serving cell, The network device configures a control resource set pool (coreset pool), and the cell information associated with the control resource set pool is different from the cell information of the serving cell; or 19. The method of claim 18, wherein the network device configures a control resource set pool, and the reference signal associated with the control resource set pool is associated with cell information, and the cell information is different from the cell information of the serving cell. (Appendix 20) For beams where the cell information is different from the cell information of a serving cell, The network device configures a reference signal, and the cell information associated with the reference signal is different from the cell information of the serving cell; or The network device configures a TCI state, and the cell information associated with the TCI state is different from the cell information of the serving cell; or 19. The method of claim 18, wherein the network device configures a TCI state, and the reference signal associated with the TCI state is associated with cell information, and the cell information is different from the cell information of the serving cell. (Appendix 21) 21. The method of any of Supplementary Notes 1, 4, 5 and 20, wherein the TCI state is a unified TCI state, a TCI state for PDCCH reception or a downlink TCI state. (Appendix 22) The cell information related to the active TCI state of reception of the downlink channel of the terminal device is different from the cell information of the serving cell, The TCI state includes a reference signal different from that of the serving cell; or 22. The method of claim 1 or 21, wherein the TCI status includes cell information different from the serving cell. (Appendix 23) The TCI state includes a reference signal different from that of the serving cell. 23. The method of claim 22, wherein the TCI state includes one or more QCL types. (Appendix 24) 24. The method of claim 23, wherein the QCL type applies QCL information, and the QCL information includes a reference signal of a non-serving cell. (Appendix 25) The TCI status includes cell information different from the serving cell, 23. The method of claim 22, wherein the TCI state includes one or more QCL types. (Appendix 26) 26. The method of claim 25, wherein the QCL type applies QCL information, and the QCL information includes a reference signal of a non-serving cell. (Appendix 27) 27. The method of any one of Supplementary Notes 1 to 26, wherein the cell information includes at least one of a physical cell identifier (PCI), a cell identifier (CellIdentity), and a cell index.

Claims

1. A system information providing device applied to a network device, comprising: a transmitter that, when a first condition is satisfied, transmits system information from a serving cell to a terminal device that satisfies the first condition in a dedicated manner; The device, wherein the first condition includes that the terminal device is receiving downlink data from a dedicated channel of a non-serving cell, or that cell information related to an active TCI state of reception of the downlink channel of the terminal device is different from cell information of the serving cell.

2. The system information from the serving cell comprises: MIB from the serving cell, SIB1 from the serving cell, PWS information from the serving cell, and The apparatus of claim 1 , including at least one of the SIBs from a serving cell requested by the terminal device.

3. The device of claim 1 , wherein if the first condition is met and a second condition is met, the system information is transmitted in a dedicated manner to the terminal device that meets the first condition.

4. The second condition is: System information has changed, the terminal device is requesting the provision of system information; The first timer has timed out; and 4. The apparatus of claim 3, wherein the time includes at least one of a previous successful transmission of system information, a previous successful reception of an acknowledgment of successful reception of system information from the terminal device, or after the terminal device has received downlink data from a dedicated channel of a non-serving cell, or after a first time threshold has been reached that cell information associated with an active TCI state differs from the cell information of the serving cell.

5. the second condition includes the system information being changed; When the first condition is satisfied and the second condition is satisfied, the system information is transmitted to the terminal device that satisfies the first condition in a dedicated manner, At a first time point, the network device notifies the terminal devices in idle state, inactive state and connected state of a change in system information and / or a warning information indication via a short message, and sends a system message corresponding to the warning information to the terminal devices in connected state that satisfy the first condition in a dedicated manner; and / or At a second time point, the network device broadcasts an updated system message and transmits the updated system information to connected terminal devices that satisfy the first condition in a dedicated manner; the first time point is within a modification period; The apparatus of claim 4 , wherein the second point in time is within a modification period after the modification period.

6. The terminal device is requesting the provision of system information, an on-demand system information request is configured by a network device for the terminal device; the terminal device requests on-demand system information from a network device; a request for transmitting system information in a dedicated manner for the terminal device is configured by the network device; and The apparatus of claim 4 , including at least one of the terminal device requesting a network device to transmit system information in a dedicated manner.

7. The on-demand system information request for the terminal device is configured by the network device, including a field or IE in the RRC reconfiguration message indicating an on-demand system information request; and / or The request for transmitting system information in a dedicated manner for the terminal device is configured by the network device, The apparatus of claim 6 , further comprising adding a new field or new IE to an RRC reconfiguration message.

8. 8. The device according to claim 7, wherein, if the new field or the new IE exists, or if the field or the IE is included in the RRC reconfiguration message, the terminal device in a connected state is permitted to request system information on demand, or the terminal device in a connected state is permitted to request that a network device transmit system information in a dedicated manner.

9. The terminal device requests the network device to transmit system information in a dedicated manner, 7. The apparatus of claim 6, further comprising the terminal device initiating a dedicated system information request if the second timer times out, is not configured, or is not running.

10. The terminal device requests the network device to transmit system information in a dedicated manner, The apparatus of claim 6 , further comprising the terminal device starting a second timer.

11. 5. The apparatus of claim 4, wherein the first timer is started when: transmission of system information is successful; when the terminal device starts receiving downlink data from a dedicated channel of a non-serving cell; when cell information related to an active TCI state of a downlink channel of the terminal device differs from cell information of the serving cell; or when an acknowledgment of successful reception of the system information is received from the terminal device.

12. The terminal device receiving downlink data from a dedicated channel of a non-serving cell is The device of claim 1 , wherein the terminal device is receiving downlink data from a dedicated channel of a TRP whose cell information is different from the cell information of a serving cell.

13. For a TRP whose cell information is different from the cell information of the serving cell, The network device configures a coreset pool, and the cell information associated with the coreset pool is different from the cell information of the serving cell; or The apparatus of claim 12 , wherein the network device configures a control resource set pool, and wherein a reference signal associated with the control resource set pool is associated with cell information, the cell information being different from cell information of a serving cell.

14. For beams where the cell information is different from the cell information of a serving cell, The network device configures a reference signal, and the cell information associated with the reference signal is different from the cell information of the serving cell; or The network device configures a TCI state, and the cell information associated with the TCI state is different from the cell information of the serving cell; or 13. The apparatus of claim 12, wherein the network device configures a TCI state, and wherein a reference signal associated with the TCI state is associated with cell information, the cell information being different from cell information of a serving cell.

15. The cell information related to the active TCI state of reception of the downlink channel of the terminal device is different from the cell information of the serving cell, The TCI state includes a different reference signal from the serving cell; or The apparatus of claim 1 , wherein the TCI status includes cell information different from the serving cell.

16. The apparatus of claim 1 , wherein the cell information includes at least one of a physical cell identifier (PCI), a cell identifier (CellIdentity), and a cell index.

17. a receiving unit configured to receive system information from a serving cell from a network device that satisfies a first condition in a dedicated manner when the first condition is satisfied; A terminal device, wherein the first condition includes that the terminal device is receiving downlink data from a dedicated channel of a non-serving cell, or that cell information related to an active TCI state of reception of the downlink channel of the terminal device is different from the cell information of the serving cell.

18. The terminal device receiving downlink data from a dedicated channel of a non-serving cell is The terminal device of claim 17, wherein the cell information includes receiving downlink data from a dedicated channel of a TRP different from the cell information of a serving cell.

19. The terminal device according to claim 17, wherein the cell information includes at least one of a physical cell identifier (PCI), a cell identifier (CellIdentity), and a cell index.

20. A communication system including a network device and a terminal device, the network device is configured to, when a first condition is satisfied, transmit system information from a serving cell to a terminal device that satisfies the first condition in a dedicated manner; A communication system, wherein the first condition includes that the terminal device is receiving downlink data from a dedicated channel of a non-serving cell, or that cell information related to an active TCI state of reception of the downlink channel of the terminal device is different from cell information of the serving cell.

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