Information sending method and device

Abstract

The embodiment of the present application provides an information sending method and device, which relates to the field of communications. The method includes: a first device receives system information sent by a network device; the first device sends first indication information and a first resource indication, the first indication information is used to indicate the system information, the first resource indication is used to indicate a first resource, and the first resource is used to carry the system information; the system information is sent based on the resource, so that the remote device does not need to receive unnecessary system information, which is beneficial to saving device power.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a method and device for sending information. Background Art

[0002] In a sidelink (SL) relay scenario, existing protocols support relay user equipment (UE) forwarding the serving cell's system information to its remote UE. The UE can send this system information to the remote UE via broadcast, multicast, or proprietary signaling. If the relay UE forwards the serving cell's system information to the remote UE via broadcast, the remote UE may receive a large amount of duplicate or unnecessary system information broadcast from different relay UEs, which consumes device power. Summary of the Invention

[0003] The embodiments of the present application provide a method and apparatus for sending information, which helps to prevent a remote device from receiving unnecessary system information, thereby saving device power.

[0004] A first aspect of an embodiment of the present application provides an information sending method, including:

[0005] The first device receives system information sent by the network device;

[0006] The first device sends first indication information and a first resource indication, wherein the first indication information is used to indicate the system information, the first resource indication is used to indicate resources, and the resources are used to carry the system information;

[0007] The system information is sent on the resource.

[0008] In a possible implementation manner, the first indication information includes any one of the following: a system information index and a system information block index.

[0009] In a possible implementation manner, the first device sending the first indication information and the first resource indication includes:

[0010] The first device sends side link control information SCI, where the SCI includes the first indication information and the first resource indication.

[0011] In a possible implementation, the SCI further includes second indication information, where the second indication information is used to indicate the cell to which the system information belongs.

[0012] In a possible implementation, the first device sending the first indication information includes:

[0013] The first device sends a media access control element MAC CE, where the MAC CE includes the first indication information.

[0014] In a possible implementation manner, the MAC CE further includes second indication information, where the second indication information is used to indicate the cell to which the system information belongs.

[0015] In a possible implementation, the first indication information includes an identifier of a serving cell, where the identifier includes any one of the following: a physical cell identifier, a global cell identifier, partial bits of a physical cell identifier, and partial bits of a global cell identifier.

[0016] A second aspect of the embodiments of the present application provides an information sending method, including:

[0017] The second device monitors the first system information;

[0018] The second device receives first indication information and a first resource indication, where the first indication information is used to indicate the first system information, the first resource indication is used to indicate a first resource, and the first resource is used to carry the first system information;

[0019] The second device receives the first system information on the first resource.

[0020] In a possible implementation, the second device receives second indication information and a second resource indication, where the second indication information is used to indicate the second system information, the second resource indication is used to indicate a second resource, and the second resource is used to carry the second system information;

[0021] The second device does not receive the second system information on the second resource.

[0022] A third aspect of the embodiments of the present application provides an information sending device, the device comprising: a receiving unit and a sending unit, wherein:

[0023] The receiving unit is configured to receive system information sent by a network device;

[0024] The sending unit is configured to send first indication information and a first resource indication, wherein the first indication information is used to indicate the system information, the resource indication is used to indicate resources, and the resources are used to carry the system information;

[0025] The sending unit is further configured to send the system information on the resource.

[0026] A fourth aspect of the embodiments of the present application provides an information sending device, the device comprising: a processing unit and a transceiver unit, wherein:

[0027] The processing unit is configured to monitor the first system information;

[0028] The transceiver unit is used to receive the first system information on the first resource when receiving the first indication information and the first resource indication, the first indication information is used to indicate the first system information, the first resource indication is used to indicate the first resource, and the first resource is used to carry the first system information.

[0029] In a fifth aspect, the present application provides a device comprising: a processor and a memory; and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the processor, and the programs include instructions for some or all of the steps described in the first aspect or the second aspect.

[0030] The sixth aspect of the embodiments of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium is used to store a computer program, wherein the computer program enables a computer to execute instructions of some or all of the steps described in the first aspect and / or the second aspect of the embodiments of the present application.

[0031] A seventh aspect of the embodiments of the present application provides a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program, wherein the computer program is operable to cause a computer to perform some or all of the steps described in the first aspect and / or the second aspect of the embodiments of the present application. The computer program product may be a software installation package.

[0032] The implementation of the embodiments of the present application has the following beneficial effects:

[0033] As can be seen, a first device receives system information sent by a network device; the first device sends first indication information and a first resource indication, wherein the first indication information is used to indicate the system information, and the first resource indication is used to indicate a resource, and the resource is used to carry the system information; the system information is sent based on the resource; a second device monitors the first system information; the second device receives the first indication information and the first resource indication, and if the system information indicated by the first indication information is the first system information, the first resource indication is used to indicate a first resource, and the first resource is used to carry the first system information; the second device receives the first system information on the first resource. If the system information indicated by the first indication information is not the first system information, the first device no longer receives the first system information. In this way, when sending system information, the first device indicates the system information being sent and indicates the resource on which the system information is sent. The second device determines whether to receive the system information on the indicated resource based on the indication information, thereby avoiding receiving unnecessary system information and saving device power. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0035] Figure 1A This is a schematic diagram of the architecture of a wireless communication system provided by an embodiment of the present application;

[0036] Figure 1B This is a flow chart of an embodiment of a method for sending information provided by an embodiment of the present application;

[0037] Figure 2 This is a flow chart of an embodiment of a method for sending information provided by an embodiment of the present application;

[0038] Figure 3 This is a flow chart of an embodiment of a method for sending information provided by an embodiment of the present application;

[0039] Figure 4 This is a schematic diagram of the structure of an information sending device provided in an embodiment of the present application;

[0040] Figure 5 This is a schematic diagram of the structure of an information sending device provided in an embodiment of the present application;

[0041] Figure 6 This is a schematic diagram of the structure of a terminal device provided in an embodiment of the present application;

[0042] Figure 7 This is a schematic diagram of the structure of an embodiment of a terminal device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0044] The terms "first," "second," "third," and "fourth," etc., in the specification and claims of this application and the accompanying drawings are used to distinguish between different objects, rather than to describe a specific order. In addition, the terms "including," "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or elements is not limited to the listed steps or elements, but may optionally include steps or elements not listed, or may optionally include other steps or elements inherent to the process, method, product, or apparatus.

[0045] Reference herein to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0046] It should be understood that the term "and / or" as used herein simply describes an association between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " as used herein indicates that the related objects are in an "or" relationship.

[0047] The term "plurality" used in the embodiments of the present application refers to two or more.

[0048] The technical solutions of the embodiments of the present application can be applied to Long Term Evolution (LTE) systems, 5G communication systems (such as New Radio (NR)), communication systems that integrate multiple communication technologies (such as communication systems that integrate LTE technology and NR technology), or various new communication systems in the future, such as 6G communication systems, 7G communication systems, etc., and the embodiments of the present application are not limited to this. The technical solutions of the embodiments of the present application are also applicable to different network architectures, including but not limited to relay network architectures, dual-link architectures, vehicle-to-everything architectures, etc.

[0049] It should be noted that the number of connections supported by traditional wireless communication systems is limited and easy to implement. However, with the development of communication technology, wireless communication systems can not only support traditional wireless communication systems, but also support device-to-device (D2D) communication, machine-to-machine (M2M) communication, machine-type communication (MTC), vehicle-to-vehicle (V2V) communication, vehicle-to-everything (V2X) communication, narrowband Internet of Things (NB-IoT) communication, etc. Therefore, the technical solutions of the embodiments of the present application can also be applied to the above-mentioned wireless communication systems.

[0050] Optionally, the wireless communication system of the embodiment of the present application can be applied to beamforming (beamforming), carrier aggregation (CA), dual connectivity (DC) or standalone (SA) deployment scenarios, etc.

[0051] The first device and / or the second device involved in the embodiments of the present application may both be terminal devices, or may include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices, or other processing devices connected to a wireless modem, as well as various forms of user equipment (UE), mobile stations (MS), terminal devices in 5G networks, etc. For the convenience of description, the above-mentioned devices are collectively referred to as terminal devices.

[0052] Specifically, in the embodiments of the present application, the terminal device can be a user device, an access terminal, a relay device, a user unit, a user station, a mobile station, a mobile station (Mobile Station, MS), a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent or a user device, a cellular phone, a cordless phone, a Session Initiation Protocol (Session Initiation Protocol, SIP) phone, a Wireless Local Loop (Wireless Local Loop, WLL) station, a Personal Digital Assistant (Personal Digital Assistant, PDA), a terminal device in a 5G network or a future evolution network, etc., and the embodiments of the present application are not limited to this.

[0053] The embodiments of the present application relate to network devices. The network device may be a device for communicating with a terminal device, including a device of a radio access network (RAN). For example, the network device may also be a node device in a wireless local area network (WLAN), such as an access controller (AC), a gateway, or a WIFI access point (AP); for another example, the network device may also be an access network device (such as gNB, CU, DU) in an NR system, and an evolved node B (ng-eNB), wherein the gNB and the terminal device communicate using NR technology, and the ng-eNB and the terminal device communicate using E-UTRA (Evolved Universal Terrestrial Radio Access) technology, and both the gNB and the ng-eNB may be connected to the 5G core network. The network devices in the embodiments of the present application also include devices that provide network device functions in future new communication systems, etc.

[0054] For example, see Figure 1A , Figure 1A This is a schematic diagram of a wireless communication system provided in an embodiment of the present application. Figure 1AAs shown, the wireless communication system 10 may include a remote terminal 110, a relay user equipment 120, and a network device 130. The remote terminal 110 (Remote UE) may be within or outside the coverage of the network device 130. Therefore, the remote terminal 110 may forward system information, signaling, or data through the relay user equipment 120 within the coverage of the network device 130. The relay user equipment 120 (device) is a terminal device capable of providing relay services. The relay user equipment 120 may be a relay user equipment (i.e., a target relay user equipment) determined by the remote terminal 110 through a relay discovery process, or the relay user equipment 120 may be a relay user equipment (i.e., a target relay user equipment) where the remote terminal 110 resides. A network device may include multiple relay user equipment 120, each of which may provide relay services for multiple remote terminals 110.

[0055] It should be noted that communication can be established between the relay user equipment 120 and the network device 130 via the Uu interface. When the remote terminal 110 is in the RRC connected state (RRC_CONNECTED), a communication connection is established between the remote terminal 110 and the relay user equipment 120 via the PC5 interface, and the cell corresponding to the network device 130 is the serving cell of the relay user equipment 120. At this time, the relay user equipment 120 and the network device 130 can adopt the existing terminal and serving cell communication mechanism, and the relay user equipment 120 and the remote terminal 110 can transmit system information, signaling, or data via a direct communication mechanism. For downlink, the relay user equipment 120 can forward the system information, signaling, or data sent by the network device 130 to the remote terminal 110 to the remote terminal 110; for uplink, the relay user equipment 120 can forward the signaling or data sent by the remote terminal 110 to the network device 130 to the network device 130.

[0056] In addition, when the remote terminal 110 is in the RRC idle state (RRC_IDLE) or the RRC inactive state (RRC_INACTIVE), the remote terminal 110 resides under the relay user equipment 120. At this time, although no communication connection is established between the remote terminal 110 and the relay user equipment 120, the remote terminal 110 can also forward system information or signaling through the relay user equipment 120.

[0057] Optionally, the wireless communication system 10 may further include multiple network devices, and the coverage area of ​​each network device may include a certain number of remote terminals and / or a certain number of relay user equipments, which is not specifically limited here.

[0058] Optionally, the wireless communication system 10 may further include other network entities such as a network controller and a mobility management entity, which are not specifically limited here.

[0059] Below, some terms used in the embodiments of the present application are explained to facilitate understanding by those skilled in the art.

[0060] 1. Proximity-based services (ProSe) communications

[0061] The 3rd Generation Partnership Project (3GPP)'s System and Service Aspects (SA) group began research on ProSe communications in Release 12. In ProSe communications, terminals can communicate directly with each other over the PC5 interface, which is a direct interface between terminals. The communication interface between the terminal and the network device is called the Uu interface.

[0062] Because actual network deployments often have coverage blind spots, preventing terminals in these blind spots from communicating with network equipment, the 3GPP SA group introduced a UE-to-network relay communication architecture when studying Prose communications. This architecture improves network coverage by forwarding data services through the UE. The relay UE can be within or outside the coverage of the network equipment.

[0063] 2. Sidelink (SL)

[0064] SL communication is a type of wireless communication directly between two or more terminal devices. In SL communication, two or more terminal devices that are geographically close to each other can communicate directly without going through an eNodeB or BS or a core network. Therefore, data transmission in SL communication is different from typical cellular network communication (for example, sending data to a BS (i.e., uplink transmission) or receiving data from a BS (i.e., downlink transmission)). In SL communication, data is sent directly from a source terminal device (i.e., a sending terminal device) to a target terminal device (i.e., a receiving terminal device) over a unified air interface such as a PC5 interface, without going through a BS.

[0065] 3. System Information (SI)

[0066] The NR communication system classifies the system information of the NR Uu interface more clearly based on the LTE communication system, thereby ensuring that the terminal can normally reside in the cell that provides it with services, providing the necessary public channel information for it to access the network and ensuring its mobility in a non-connected state.

[0067] According to the importance of system information content and the way it is disseminated, system information can be divided into a master information block (MIB) and a series of system information blocks (SIBs).

[0068] To more rationally manage network resource utilization, system information can be disseminated in two ways: periodic broadcast and on-demand transmission based on terminal requests. In the periodic broadcast mode, the base station can continuously transmit the SI within the system information time window (SI-window) corresponding to the calculated SI. In the on-demand transmission mode, if the terminal does not request SI transmission, the base station does not transmit the SI to the terminal. If the terminal does request SI transmission, the base station will transmit the SI to the terminal at a certain time within the system information time window corresponding to the calculated SI.

[0069] In addition, system information can be divided into MIB and a series of SIBs, and can also be divided into minimum system information (MinimumSI) and other system information (Other SI). Among them, Minimum SI can include MIB and SIB1, which are transmitted through the broadcast channel (BCH) and the downlink shared channel (DL-SCH), respectively, and their propagation mode is periodic broadcast. Other SIBs are collectively referred to as Other SI, and their propagation mode can be periodic broadcast or based on the terminal's on-demand request. At the same time, the terminal can only normally reside in or access the current cell when it reads the MinimumSI of the current cell. If the base station does not broadcast the complete Minimum SI, the current cell is not allowed to reside.

[0070] The MIB contains information related to the cell barring status and multiple physical layer parameters required to obtain SIB1 for the current cell. The MIB transmission period is fixed at 80ms, and the same information can be repeatedly transmitted within 80ms. If the terminal receives the MIB, it stores the MIB and performs the following judgment process based on its content: When the terminal is in idle, inactive, or connected state, if the current cell is barred, it determines whether cell reselection for other cells on the same frequency point is allowed based on the intraFreqReselection information; if the current cell allows access, it obtains the time-frequency parameters of the control channel indicating the reception of SIB1.

[0071] SIB1 contains some special system configuration information for the current cell, such as the parameters required for initial access, the current cell common configuration, and the scheduling information of each SIB in the Other SI. The scheduling information of each SIB in the Other SI includes the Other SI scheduling and usage rule parameters, the status indication of whether each SIB is currently transmitting, the system information area identifier (ID), and the configuration status of SIBs that require request before broadcasting.

[0072] In addition, the SIB1 transmission period is 160ms, and the same information can be repeatedly sent within 160ms. The default repetition period is 20ms. If the terminal receives SIB1, it stores it and performs the following procedures based on its content: storing cell access-related information (including plmn-IdentityList, trackingAreaCode, and cellIdentity); applying the serving cell's common configuration parameters; and verifying the validity of each SIB in the Other SI. If the terminal has a valid version saved, it uses that version; otherwise, the terminal determines whether to directly read system information or initiate a request from the base station based on the scheduling information of each SIB in the Other SI in SIB1 and the broadcast status of the currently required SIBs.

[0073] For Other SI, an Other SI can include one or more SIBs (such as SIB2 / SIB3). The transmission of each SIB in the Other SI is carried out through dynamic scheduling within a periodic system information time window (SI-window). Among them, SIBs with the same period in the Other SI can be sent in the same SI, and each SI corresponds to an SI-window. The SI-window lengths of different SIs are consistent, but overlap is not allowed.

[0074] If the terminal wants to obtain Other SI, it must first determine the order value of each SIB based on the scheduling information of each SIB in Other SI in SIB1, and then calculate the SI-window position corresponding to each SIB. The base station can send the corresponding SIB multiple times within an SI-window. If the terminal fails to obtain the SIB within the SI-window, it can continue to obtain the SIB in the subsequent SI-window corresponding to the SIB.

[0075] The terminal needs to store the MIB, SIB1 or other SIBs obtained from the current resident or serving cell. At the same time, each system information version is valid for a maximum of 3 hours after its validity is confirmed, and will be deleted by the terminal after this time.

[0076] Both MIB and SIB1 are cell-level specific messages. That is, after a terminal accesses or resides in a current cell, it must ensure the correctness and validity of the MIB and SIB1 of the current cell.

[0077] Each SIB in the Other SI can be configured as cell-level or regional-level system information. Cell-level system information is only used within a cell and becomes invalid after the terminal leaves the cell; regional-level system information is universal within the set SI area, and an SI area can contain one or more cells.

[0078] In Release 17, NR also introduced the UE-to-network Relay communication architecture. In relay communication, in addition to relaying data services for its remote UE, the device can also relay the system information of the serving cell for its remote UE, with the aim of providing the remote UE with the necessary common channel information and other network configuration information required to access the network. In the sidelink relay scenario, the existing protocol supports the device forwarding the system information of the serving cell to the remote UE, and the device can send the system information to the remote UE through broadcast, multicast or proprietary signaling. If the relay UE forwards the system information of the serving cell to its remote UE by broadcast, the remote UE cannot know which system information the relay UE forwards and whether it is the system information it needs.

[0079] In order to solve the above problems, an embodiment of the present application proposes a method for sending system information. In the SL relay scenario, by introducing information used to indicate system information, the remote UE can determine whether to receive the corresponding system information based on the information used to indicate the system information, which helps to reduce the possibility of the remote UE receiving unnecessary system information and is beneficial to saving device power.

[0080] In order to help those skilled in the art better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0081] See also Figure 1B , is a flow chart of an embodiment of a method for sending information provided in an embodiment of the present application. Applied to a first device, the method for sending information described in this embodiment includes the following steps:

[0082] 101. A first device receives system information sent by a network device.

[0083] 102. The first device sends first indication information and first resource indication, wherein the first indication information is used to indicate the system information (i.e., the system information received by the first device in step 101), and the first resource indication is used to indicate resources, which are used to carry the system information.

[0084] Wherein, the first device can be the above-mentioned Figure 1A The relay device described may be a relay terminal or relay user equipment (relay UE) capable of providing relay service capabilities. Specifically, the first device is a relay user equipment where a remote device (remote UE) resides, which can forward system information, signaling or data sent by a network device.

[0085] The resource indication can be understood as a bridge between the first indication information and the system information. The first indication information is used to indicate the system information, and the resource indication is used to indicate the resource, which is used to carry the system information.

[0086] In a possible example, the first indication information includes any one of the following: a system information index (SIindex) and a system information block index (SIB index).

[0087] For example, the above-mentioned system information index (SI index) and / or system information block index (SIB index) may be configured in the form of a bitmap.

[0088] Optionally, if the first indication information is a system information index (SI index), since the first device Relay UE can continue to use the SI Index in the serving cell SIB1 or re-plan the SI index, the system information index can be the same as or different from the system information index indicated by the SIB1 sent by the serving cell.

[0089] In a possible example, the first device sending the first indication information and the first resource indication may include the following steps: the first device sends side link control information SCI, and the SCI includes the first indication information and the first resource indication.

[0090] The sidelink control information (SCI) can be transmitted via the Physical Sidelink Shared Channel (PSSCH) and carries information related to PSSCH data transmission, such as data priority, the interval for reserved transmission resources, the frequency locations for initial and retransmissions, and the modulation and coding scheme used to modulate PSSCH data transmission.

[0091] In a possible example, the first indication information includes an identifier of a serving cell, and the identifier includes any one of the following: a physical cell identifier (PCI), a global cell identifier (CGI), partial bits of a physical cell identifier, and partial bits of a global cell identifier.

[0092] In order to enable the remote UE (the second device, i.e., the remote device) to know which cell's system message the first device transmits, the cell identifier can be indicated in the SCI at the same time, which can be CGI or PCI. The above-mentioned global cell identifier (CellGlobal Identifier, CGI) can be carried in the SI Index in SIB1.

[0093] In addition, a complete serving cell identifier requires many bits. For example, a global cell identifier may be 28 bits. Because the remote UE can only receive information sent by the relay UE within the vicinity of the remote UE, even if the remote UE can receive system messages from other relay UEs, as long as the cell to which the system message forwarded by the relay UE belongs differs from the last few bits of the cell from which the remote UE actually expects the system message, the remote UE can still distinguish them. Therefore, the serving cell identifier can also be the last few bits of information in the CGI or PCI, such as the last 8 bits. Transmitting the last few bits of information helps reduce the number of resource / channel bits.

[0094] In a possible example, the SCI also includes second indication information, and the second indication information is used to indicate the cell to which the system information belongs.

[0095] In a possible example, the first device sending the first indication information may include the following steps: the first device sends a media access control element MAC CE, and the MAC CE includes the first indication information.

[0096] The above-mentioned Media Access Control Element (MAC CE) information may be used to indicate resource configuration information of the SRS, and the resource configuration information may be determined by resource configuration information of the Radio Resource Control (RRC).

[0097] In a possible example, the MAC CE also includes second indication information, where the second indication information is used to indicate the cell to which the system information belongs.

[0098] In an embodiment of the present application, the above-mentioned second indication information and the above-mentioned first indication information may not necessarily be carried in one message, and may also be sent through different signaling or messages. For example, the above-mentioned first indication information may be carried through the following messages or signaling: PC5 message between the Remote UE, PC5-RRC signaling or signaling specified by the standard protocol, such as the sidelink control information (SCI) of the physical downlink control channel (PSCCH), RRC signaling, etc. The second indication information may be carried through the media access control unit (MAC Control Element, MAC CE) information, etc., which is not limited here; it can be seen that different channels or signaling can be used to send different information in different scenarios, which is conducive to improving the flexibility and efficiency of the network configuration of the system information index (SI index) and / or system information block index (SIB index) during the first system information request process.

[0099] 103. The first device sends the system information using the resources indicated by the second indication information.

[0100] Among them, the above-mentioned system information may include necessary system information (essential SIBs) forwarded to the Remote UE. The necessary system information can be understood as the system information required for the Remote UE to normally reside in or access the current cell, and its propagation method can be periodic broadcast, multicast, or sent through dedicated signaling. Taking periodic broadcast as an example, the network device will periodically broadcast the necessary system information, which will then be actively forwarded to the Remote UE by the first device, thereby enabling the terminal to normally reside in or access the current cell. Furthermore, the necessary system information can be actively sent when the network device system information is updated, or it can be sent based on the system information request sent by the Remote UE.

[0101] Furthermore, the necessary system information in the embodiment of the present application may include a master information block (such as an MIB indicating a system frame number SFN), a system information block type 1 (such as SIB1 indicating a public land mobile network PLMN and cell information), a system information block type 2 (such as SIB2 indicating cell access prohibition information), and direct communication system information block related information. The direct communication system information block related information may include LTE device-to-device further enhancements (furtherenhancements to LTE device to device, FeD2D) system information block related information (such as SIB18 / SIB19).

[0102] Optionally, the above-mentioned system information may be SI or SIB. The system information may be the SIBs of the current cell sent by the network device proactively or upon request of the Remote UE, or the SI containing the SIBs of the current cell sent by the network device proactively or upon request of the Remote UE. The first device may forward necessary system information blocks, such as SIB1, to the Remote UE; or it may send some system information blocks SIB or system information SI upon request of the Remote UE. When the serving cell sends system information to the first device, SIB1 is sent separately. For other SIBs, the serving cell transmits them through SI using the scheduling information of other SIBs indicated in SIB1. One SI may contain one or more SIBs. For example, the serving cell may transmit SIB2+SIB3 through one SI. If a Remote UE requests SIB2 from the device serving it, the first device may send SIB2 to the Remote UE or may directly forward the SI containing SIB2+SIB3 received from the serving cell.

[0103] Of course, it should be noted that the above-mentioned first resource indication and / or first indication information and system information can be sent at the same time. The first resource indication and / or first indication information and system information can be carried in different information, for example, may include PC5 messages between the Remote UE, PC5-RRC signaling or signaling specified by the standard protocol, such as sidelink control information (SCI) of the physical downlink control channel (PSCCH), RRC signaling, media access control unit (MAC Control Element, MAC CE) information carrying, etc., which are not limited here.

[0104] As can be seen, in the embodiment of the present application, the first device receives system information sent by the network device; the first device sends first indication information and a first resource indication, wherein the first indication information is used to indicate the system information, the first resource indication is used to indicate a resource, and the resource is used to carry the system information; and the system information is sent on the resource. In this way, the first device can indicate the system information through the first indication information, and after the second device (remoteUE) subsequently receives the first indication information, it can determine whether to receive the above-mentioned system information through the first indication information, which is beneficial to avoid the situation where the second device subsequently receives information incorrectly and is beneficial to saving power.

[0105] Consistent with the above, see Figure 2, which is a flow chart of an embodiment of a method for sending information provided in an embodiment of the present application. Applied to a second device, the method for sending information described in this embodiment includes the following steps:

[0106] 201. The second device monitors system information a.

[0107] 202. The second device receives indication information a and resource indication a, where indication information a is used to indicate first system information, resource indication a is used to indicate resource a, and resource a is used to carry system information a.

[0108] For example, taking the second device as Remote UE1, when Remote UE1 is connected to Relay UE1, the indication information a and resource indication a may come from Relay UE1 or from other devices other than Relay UE1 (such as Relay UE2, etc.), and there is no limitation on this.

[0109] 203. The second device receives system information a on resource a.

[0110] The second device (remote UE) may be a user equipment that receives information such as system information, signaling or data from a network device forwarded by the relay user equipment.

[0111] Among them, the conditions for triggering the second device to monitor system information a may be: the system information a stored in the second device itself has expired, or the second device requires the content of system information a for communication, or the second device has access requirements (such as turning on the power, turning off the flight mode), etc., which are not limited here.

[0112] The remote UE may receive system messages forwarded by the relay UE it is connected to, or may receive system messages forwarded by other relay UEs.

[0113] Optionally, the second device can determine whether the system information a is the system information required by itself based on the indication information a. In a specific implementation, it can determine whether the system information a is required by the second device (remote UE) based on the identifier of the service cell carried in the indication information a. For example, if the identifier of the service cell is the identifier of the service cell actually expected by the remote UE, it is determined that the system information a is required by the second device.

[0114] In other examples, the method may further include the following steps: the second device receives indication information b and resource indication b, where indication information b indicates system information b, resource indication b indicates resource b, and resource b carries system information b; and because the second device monitors system information b but not system information b, i.e., system information b is not required by the second device, the second device does not receive system information b on resource b. This helps reduce the possibility of the second device receiving unnecessary system information, thereby conserving device power.

[0115] Consistent with the above, see Figure 3 , is a flow chart of an embodiment of a method for sending information provided in an embodiment of the present application. It includes the following steps:

[0116] 301. A first device receives system information sent by a network device.

[0117] 302. The first device sends indication information 1 and resource indication 1, where indication information 1 is used to indicate system information 1, resource indication 1 is used to indicate resource 1, and resource 1 is used to carry system information 1.

[0118] 303 . The first device sends system information 1 on resource 1 . For example, the first device broadcasts or multicasts system information 1 on resource 1 .

[0119] 304. The second device monitors system information 1.

[0120] 305. The second device receives indication information 1 and resource indication 1.

[0121] 306. The second device receives system information 1 on resource 1.

[0122] In some embodiments, if the second device receives indication information 2 , where indication information 2 is used to indicate system information 2 , the second device does not receive system information 2 .

[0123] Optionally, the detailed description of the above steps 301 to 303 can be found in Figure 1B The corresponding steps of step 101 to step 103 of the described information sending method are not repeated here.

[0124] Optionally, the detailed description of the above steps 304 to 306 can be found in Figure 2 The corresponding steps of step 201 to step 203 of the described information sending method are not repeated here.

[0125] Consistent with the above, the following is a device for implementing the above information sending method, specifically as follows:

[0126] See also Figure 4, is a schematic diagram of the structure of an embodiment of an information sending device provided in an embodiment of the present application. The information sending device described in this embodiment is applied to a first device, and the device includes: a receiving unit 401 and a sending unit 402, specifically as follows:

[0127] The receiving unit 401 is configured to receive system information sent by a network device;

[0128] The sending unit 402 is configured to send first indication information and a first resource indication, wherein the first indication information is used to indicate the system information, the resource indication is used to indicate resources, and the resources are used to carry the system information;

[0129] The sending unit 402 is further configured to send the system information on the resource.

[0130] The receiving unit 401 may be used to implement the method described in step 101 , and the sending unit 402 may be used to implement the methods described in steps 102 and 103 .

[0131] It can be seen that, through the information sending device described in the embodiment of the present application, system information sent by a network device is received; the first device sends first indication information and a first resource indication, wherein the first indication information is used to indicate the system information, the first resource indication is used to indicate a resource, and the resource is used to carry the system information; the system information is sent on the resource. In this way, the first device can indicate the system information through the first indication information, and after the second device (remote UE) subsequently receives the first indication information, it can determine whether it needs to receive the above-mentioned system information through the first indication information, which is beneficial to avoid the situation where the second device subsequently receives information errors and is beneficial to saving power.

[0132] In a possible example, in terms of the first device sending the first indication information and the first resource indication, the sending unit 402 is specifically configured to:

[0133] The first device sends side link control information SCI, where the SCI includes the first indication information and the first resource indication.

[0134] In a possible example, in terms of the first device sending the first indication information and the first resource indication, the sending unit 402 is further configured to:

[0135] The first device sends a media access control element MAC CE, where the MAC CE includes the first indication information.

[0136] See also Figure 5, is a schematic diagram of the structure of an embodiment of an information sending device provided in an embodiment of the present application. The information sending device described in this embodiment is applied to a second device, and the device includes: a processing unit 501 and a transceiver unit 502, specifically as follows:

[0137] The processing unit 501 is configured to monitor first system information;

[0138] The transceiver unit 502 is configured to receive the first system information on a first resource upon receiving first indication information and a first resource indication, where the first indication information is used to indicate the first system information, the first resource indication is used to indicate the first resource, and the first resource is used to carry the first system information;

[0139] The transceiver unit 502 is further configured to receive the first system information on the first resource.

[0140] Among them, the processing unit 501 can be used to implement the method described in step 201 above, and the transceiver unit 502 is used to implement the method described in step 202 and step 203 above.

[0141] It can be seen that the information sending device described in the embodiment of the present application can monitor the first system information; the second device receives the first indication information and the first resource indication, the first indication information is used to indicate the first system information, the first resource indication is used to indicate the first resource, and the first resource is used to carry the first system information; the second device receives the first system information on the first resource. In this way, the system information sent by the first device can be judged based on the first indication information. If the first indication information meets the preset conditions, the system information sent by the first device is received, thereby preventing the remote UE from receiving unnecessary system information and helping to save device power.

[0142] In the embodiments of this application, Figure 4 and / or Figure 5 The device in the embodiment may also be a chip, a chip module, a user equipment UE or a chip system, such as a system on chip (SoC). Correspondingly, the transceiver unit may be a transceiver circuit of the chip, which is not limited here.

[0143] It can be understood that the functions of each program module of the information sending device of this embodiment can be specifically implemented according to the method in the above method embodiment. The specific implementation process can refer to the relevant description of the above method embodiment and will not be repeated here.

[0144] Regarding the various modules / units contained in the various devices and products described in the above embodiments, they can be software modules / units, hardware modules / units, or partly software modules / units and partly hardware modules / units. For example, for various devices and products applied to or integrated into a chip, the various modules / units contained therein can all be implemented in the form of hardware such as circuits, or at least some of the modules / units can be implemented in the form of software programs, which run on the processor integrated inside the chip, and the remaining (if any) modules / units can be implemented in the form of hardware such as circuits; for various devices and products applied to or integrated into a chip module, the various modules / units contained therein can all be implemented in the form of hardware such as circuits, and different module units can be located in the same component of the chip module (such as a chip, circuit module, etc.) or in different components, or at least some of the modules / units can be implemented in the form of software programs. The software programs run on the processor integrated inside the chip, and the remaining (if any) modules / units can be implemented in the form of hardware such as circuits; for various devices and products applied to or integrated into a chip module, the various modules / units contained therein can all be implemented in the form of hardware such as circuits, and different module units can be located in the same component of the chip module (such as a chip, circuit module, etc.) or in different components, or at least some of the modules / units can be implemented in the form of hardware such as circuits. It can be implemented in the form of a software program, which runs on the processor integrated inside the chip module, and the remaining (if any) modules / units can be implemented in the form of hardware such as circuits; for various devices and products applied to or integrated in the terminal, the various modules / units contained therein can be implemented in the form of hardware such as circuits, and different modules / units can be located in the same component (for example, chip, circuit module, etc.) or different components in the terminal, or, at least some modules / units can be implemented in the form of a software program, which runs on the processor integrated inside the terminal, and the remaining (if any) modules / units can be implemented in the form of hardware such as circuits.

[0145] Consistent with the above, see Figure 6 , is a schematic diagram of the structure of an embodiment of a terminal device provided in an embodiment of the present application. Applied to a first device, as shown in the figure, the device includes a processor, a memory, a communication interface, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the processor. In the embodiment of the present application, the program includes instructions for executing the following steps:

[0146] The first device receives system information sent by the network device;

[0147] The first device sends first indication information and a first resource indication, wherein the first indication information is used to indicate the system information, the first resource indication is used to indicate resources, and the resources are used to carry the system information;

[0148] The system information is sent on the resource.

[0149] It can be seen that the terminal device described in the embodiment of the present application can receive system information sent by a network device; the first device sends first indication information and a first resource indication, wherein the first indication information is used to indicate the system information, the first resource indication is used to indicate a resource, and the resource is used to carry the system information; the system information is sent on the resource. In this way, the first device can indicate the system information through the first indication information, and after the second device (remote UE) subsequently receives the first indication information, it can determine whether it needs to receive the above-mentioned system information through the first indication information, which is beneficial to avoid the situation where the second device subsequently receives information incorrectly and is beneficial to saving power.

[0150] In a possible example, the first indication information includes any one of the following: a system information index, a system information block index.

[0151] In a possible example, the first indication information is carried in the side link control information SCI.

[0152] In a possible example, in terms of the first device sending the first indication information and the first resource indication, the program further includes instructions for performing the following steps:

[0153] The first device sends side link control information SCI, where the SCI includes the first indication information and the first resource indication.

[0154] In a possible example, the SCI also includes second indication information, and the second indication information is used to indicate the cell to which the system information belongs.

[0155] In a possible example, in terms of the first device sending the first indication information, the program further includes instructions for performing the following steps:

[0156] The first device sends a media access control element MAC CE, where the MAC CE includes the first indication information.

[0157] In a possible example, the MAC CE also includes second indication information, and the second indication information is used to indicate the cell to which the system information belongs.

[0158] In a possible example, the first indication information includes an identifier of a serving cell, and the identifier includes any one of the following: a physical cell identifier, a global cell identifier, partial bits of a physical cell identifier, and partial bits of a global cell identifier.

[0159] Consistent with the above, see Figure 7, is a schematic diagram of the structure of an embodiment of a terminal device provided in an embodiment of the present application. Applied to a second device, as shown in the figure, the device includes a processor, a memory, a communication interface, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the processor. In the embodiment of the present application, the program includes instructions for executing the following steps:

[0160] The second device monitors the first system information;

[0161] The second device receives first indication information and a first resource indication, where the first indication information is used to indicate the first system information, the first resource indication is used to indicate a first resource, and the first resource is used to carry the first system information;

[0162] The second device receives the first system information on the first resource. It can be seen that the terminal device described in the embodiment of the present application can monitor the first system information; the second device receives the first indication information and the first resource indication, the first indication information is used to indicate the first system information, the first resource indication is used to indicate the first resource, and the first resource is used to carry the first system information; the second device receives the first system information on the first resource. In this way, the system information sent by the first device can be judged based on the first indication information. If the first indication information meets the preset conditions, the system information sent by the first device is received, thereby avoiding the remote UE from receiving unnecessary system information, which is beneficial to saving device power.

[0163] In one possible example, the program further includes instructions for executing the following steps:

[0164] The second device receives second indication information and a second resource indication, where the second indication information is used to indicate the second system information, the second resource indication is used to indicate a second resource, and the second resource is used to carry the second system information;

[0165] The second device does not receive the second system information on the second resource.

[0166] An embodiment of the present application also provides a network device, which is used to support the first device to implement part or all of the steps of any method recorded in the above method embodiment.

[0167] An embodiment of the present application further provides a chip, wherein the chip is configured to receive system information sent by a network device;

[0168] The chip is further configured to send first indication information and a first resource indication, wherein the first indication information is used to indicate the system information, the first resource indication is used to indicate resources, and the resources are used to carry the system information;

[0169] The chip is further configured to send the system information on the resource.

[0170] The embodiment of the present application further provides a chip module, which includes a transceiver module and a chip, wherein:

[0171] The chip is used to receive system information sent by the network device through the transceiver module; and send first indication information and first resource indication, wherein the first indication information is used to indicate the system information, the first resource indication is used to indicate resources, and the resources are used to carry the system information; and send the system information on the resources.

[0172] An embodiment of the present application further provides a chip, wherein the chip is configured to monitor first system information;

[0173] The chip is further configured to receive first indication information and a first resource indication, where the first indication information is used to indicate the first system information, the first resource indication is used to indicate a first resource, and the first resource is used to carry the first system information;

[0174] The chip is further configured to receive the first system information on the first resource.

[0175] The embodiment of the present application further provides a chip module, wherein:

[0176] The chip is used to monitor the first system information;

[0177] The transceiver module is configured to receive first indication information and a first resource indication, where the first indication information is used to indicate the first system information, the first resource indication is used to indicate a first resource, and the first resource is used to carry the first system information;

[0178] The transceiver module is further used for the second device to receive the first system information on the first resource.

[0179] An embodiment of the present application also provides a computer storage medium, wherein the computer storage medium may store a program, and when the program is executed, the program includes part or all of the steps of any one of the information sending methods recorded in the above method embodiments.

[0180] Although the present application is described herein in conjunction with various embodiments, in the process of implementing the claimed application, those skilled in the art can understand and implement other changes to the disclosed embodiments by reviewing the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "an" does not exclude multiple situations. A single processor or other unit can implement several functions listed in the claims. Certain measures are recorded in different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

[0181] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, devices (equipment), or computer program products. Therefore, the application can adopt the form of complete hardware embodiment, complete software embodiment, or the embodiment in combination with software and hardware. Moreover, the application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code. The computer program is stored / distributed in a suitable medium, provided together with other hardware or as a part for hardware, or other distribution forms can be adopted, such as by the Internet or other wired or wireless telecommunication systems.

[0182] The present application is described with reference to the flowchart and / or block diagram of the method, apparatus (equipment) and computer program product of the embodiment of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram and the combination of the process and / or box in the flowchart and / or block diagram can be realized by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processing machine or other programmable information sending device to produce a machine, so that the instructions executed by the processor of the computer or other programmable information sending device produce a device for realizing the function specified in one process or multiple processes and / or one box or multiple boxes of the flowchart.

[0183] These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable information sending device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including an instruction device that implements the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0184] These computer program instructions may also be loaded onto a computer or other programmable information sending device so that a series of operating steps are executed on the computer or other programmable device to produce computer-implemented processing, whereby the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0185] Although the present application has been described with reference to specific features and embodiments thereof, it is apparent that various modifications and combinations may be made thereto without departing from the spirit and scope of the present application. Accordingly, this specification and the drawings are merely illustrative of the present application as defined by the appended claims and are deemed to cover any and all modifications, variations, combinations or equivalents within the scope of the present application. Obviously, those skilled in the art may make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, the present application is intended to include such modifications and variations as fall within the scope of the claims of the present application and their equivalents.

Claims

1. A method for sending information, characterized in that: The method comprises: The first device receives system information sent by the network device; The first device sends first indication information and a first resource indication, wherein the first indication information is used to indicate the system information, the first resource indication is used to indicate a resource, and the resource is used to carry the system information; sending the system information on the resource; The first device sending the first indication information and the first resource indication includes: the first device sending side link control information SCI, the SCI including the first indication information and the first resource indication; the SCI also includes second indication information, the second indication information is used to indicate the cell to which the system information belongs; or The first device sends the first indication information, including: the first device sends a media access control element MACCE, the MAC CE includes the first indication information; the MAC CE also includes second indication information, and the second indication information is used to indicate the cell to which the system information belongs.

2. The method according to claim 1, characterized in that The first indication information includes any one of the following: System information index, system information block index.

3. The method according to claim 1, characterized in that The second indication information includes an identifier of a serving cell, and the identifier includes any one of the following: a physical cell identifier, a global cell identifier, partial bits of a physical cell identifier, and partial bits of a global cell identifier.

4. A method for receiving information, characterized in that: The method comprises: The second device monitors the first system information; The second device receives first indication information and a first resource indication, where the first indication information is used to indicate the first system information, the first resource indication is used to indicate a first resource, and the first resource is used to carry the first system information; The second device receives the first system information on the first resource; The first indication information and the first resource indication are carried in side link control information SCI; the SCI further includes second indication information, and the second indication information is used to indicate the cell to which the system information belongs; or The first indication information is carried in a control information element MAC CE, and the MAC CE also includes second indication information, and the second indication information is used to indicate the cell to which the system information belongs.

5. The method according to claim 4, characterized in that The method further comprises: The second device receives second indication information and a second resource indication, where the second indication information is used to indicate second system information, the second resource indication is used to indicate a second resource, and the second resource is used to carry the second system information; The second device does not receive the second system information on the second resource.

6. An information sending device, characterized in that: The device comprises: a receiving unit and a sending unit, wherein: The receiving unit is used to receive system information sent by the network device; The sending unit is used to send first indication information and first resource indication, wherein the first indication information is used to indicate the system information, the resource indication is used to indicate resources, and the resources are used to carry the system information; the sending of the first indication information and the first resource indication, the sending unit is specifically used to: send side link control information SCI, the SCI includes the first indication information and the first resource indication; the SCI also includes second indication information, the second indication information is used to indicate the cell to which the system information belongs; or, the sending of the first indication information, the sending unit is specifically used to: send a media access control control element MAC CE, the MAC CE includes the first indication information; the MAC CE also includes second indication information, the second indication information is used to indicate the cell to which the system information belongs The sending unit is further used to send the system information on the resource.

7. An information sending device, characterized in that: The device comprises: a processing unit and a transceiver unit, wherein: The processing unit is used to monitor the first system information; The transceiver unit is configured to receive the first system information on a first resource when receiving first indication information and a first resource indication, the first indication information being used to indicate the first system information, the first resource indication being used to indicate the first resource, and the first resource being used to carry the first system information; the first indication information and the first resource indication being carried in side link control information SCI; the SCI further comprising second indication information, the second indication information being used to indicate a cell to which the system information belongs; or the first indication information being carried in a control information element MACCE, the MAC CE further comprising second indication information, the second indication information being used to indicate a cell to which the system information belongs; The transceiver unit is further used to receive the first system information on the first resource.

8. A communication device, comprising a processor and a memory, wherein the memory is used to store one or more programs, and when the processor runs the program, the method according to any one of claims 1 to 3 is executed, or the method according to claim 4 or 5 is executed.

9. The device according to claim 8, characterized in that The device is a chip, a chip module or a user equipment UE.

10. A computer-readable storage medium, characterized in that: A computer program is stored, wherein when the computer program is executed by a computer, the method according to any one of claims 1 to 3, or the method according to claim 4 or 5 is executed.

Images