Method and apparatus for information transmission

Abstract

The application provides a method and device for information transmission, which can enable a terminal in an RRC connected state to acquire public alarm information. The method comprises: a terminal in an RRC connected state detecting first information at a first transmission occasion in a first common search space and detecting downlink control information at a second transmission occasion in a dedicated search space, the downlink control information being used for indicating resources of a data channel or reinitiating random access, and the time domain resources of the first transmission occasion and the second transmission occasion being non-overlapping; the first communication device in the RRC connected state can detect two types of search spaces in a time-division manner, and the first communication device in the RRC connected state can detect multiple types of information.

Description

Technical Field

[0001] This application relates to the field of communications, and more specifically, to a method and apparatus for information transmission. Background Technology

[0002] In narrowband Internet of Things (NB-IoT) systems, considering the power consumption and complexity of NB-IoT devices, existing technologies only allow terminals in the radio resource control (RRC) connected state to detect downlink control information. Therefore, enabling terminals in the RRC connected state to detect other information is a pressing issue. Summary of the Invention

[0003] This application provides a method and apparatus for information transmission, which enables a terminal in RRC connection state to detect various types of information.

[0004] In a first aspect, a method for transmitting information is provided. This method can be applied to a first communication device in an RRC connection state, for example, executed by the first communication device. The first communication device can be a terminal or a module applied to the terminal (e.g., a circuit, chip, chip system, or processor), or it can be a logic node, logic module, or software that can realize all or part of the terminal functions.

[0005] The method includes: detecting first information during a first transmission time in a first common search space; and detecting downlink control information during a second transmission time in a dedicated search space, wherein the downlink control information is used to indicate the resources of the data channel or to indicate the re-initiation of random access, and the time domain resources of the second transmission time do not overlap with those of the first transmission time.

[0006] Based on the above technical solution, the first communication device in the RRC connection state can detect the first information in the first transmission time in the first common search space and detect the downlink control information in the second transmission time in the dedicated search space. The time domain resources of the second transmission time and the first transmission time do not overlap. Therefore, the first communication device in the RRC connection state can detect the two types of search space in a time-division manner, and the terminal in the RRC connection state can detect multiple types of information.

[0007] In conjunction with the first aspect, some implementations of the first aspect further include: receiving second information, the second information being used to indicate the association between the first transmission timing and the paging timing within the first common search space, the paging timing within the first common search space including the first transmission timing. In this implementation, the first common search space is a type-1 common search space (CSS), and the first communication device in the RRC connected state does not need to detect paging messages within the first common search space, but only needs to detect the first information during the first transmission timing within the first common search space.

[0008] In conjunction with the first aspect, in some implementations of the first aspect, the second information indicates the number of first transmission opportunities included within a paging cycle corresponding to the first communication device within the first public search space. Based on this implementation, the number of first transmission opportunities included within a paging cycle corresponding to the first communication device can be adjusted according to the timeliness requirements of the first information. For example, when the timeliness requirements of the first information are high, the number of first transmission opportunities included within a paging cycle corresponding to the first communication device can be increased; when the timeliness requirements of the first information are low, the number of first transmission opportunities included within a paging cycle corresponding to the first communication device can be decreased to save resource consumption.

[0009] In conjunction with the first aspect, in some implementations of the first aspect, the number of the first transmission opportunities included in a paging cycle corresponding to the first communication device within the first public search space is 4, 2, 1, 1 / 2, or 1 / 4.

[0010] In conjunction with the first aspect, some implementations of the first aspect further include: receiving configuration information of the first public search space, wherein the radio network temporary identifier (RNTI) corresponding to the first transmission opportunity in the first public search space is different from the RNTI corresponding to the paging opportunity in the second public search space, wherein the second public search space is type-1CSS. In this implementation, the first public search space is a newly configured public search space on the network side for monitoring the first information, which makes the period of the first transmission opportunity independent of the paging period, thereby making the setting of the period of the first transmission opportunity more flexible. In addition, this implementation can also avoid conflict between the RNTI corresponding to the first public search space used for detecting the first information and the RNTI corresponding to the second public search space (type-1CSS) used for detecting paging messages.

[0011] In conjunction with the first aspect, some implementations of the first aspect further include: when the time-domain resources of the third transmission opportunity within the dedicated search space overlap with the time-domain resources of the first transmission opportunity, the downlink control information is not detected during the third transmission opportunity. Based on this implementation, since only one type of search space is detected at a time to reduce the power consumption of the first communication device, when the third transmission opportunity within the dedicated search space overlaps with the first transmission opportunity within the first common search space, the first information is transmitted during the first transmission opportunity, and the downlink control information is not transmitted during the third transmission opportunity. This allows the first information to be transmitted preferentially, further improving the timeliness of the first information.

[0012] In conjunction with the first aspect, in some implementations of the first aspect, the first information includes at least one of public alarm information, earthquake and tsunami warning information, or commercial mobile alert information. Earthquake and tsunami warning information or commercial mobile alert information can be understood as a type of public alarm information. Based on this implementation, the first communication device can obtain public alarm information by detecting a first public search space.

[0013] In conjunction with the first aspect, some implementations of the first aspect further include: sending first capability information, wherein the first capability information indicates that the first communication device has the capability to detect the first common search space and the dedicated search space. Based on this implementation, the second communication device can know that the first communication device has the capability to detect the first common search space and the dedicated search space, thereby sending first information to the first communication device at a first transmission opportunity in the first common search space, and sending downlink control information to the first communication device at a second transmission opportunity in the dedicated search space.

[0014] Secondly, a method for transmitting information is provided. This method can be applied to a second communication device, such as being executed by the second communication device. The second communication device can be a network device or a module (e.g., circuit, chip, chip system, or processor) applied to a network device, or it can be a logical node, logical module, or software that can realize all or part of the functions of the network device.

[0015] The method includes: sending first information to a first communication device at a first transmission time in a first common search space, the first communication device being a communication device in an RRC connected state; and sending downlink control information to the first communication device at a second transmission time in a dedicated search space, the downlink control information being used to indicate the resources of the data channel or to indicate the re-initiation of random access, wherein the time domain resources of the second transmission time do not overlap with those of the first transmission time.

[0016] The method provided in the second aspect is the method on the second communication device side corresponding to the first aspect, and its beneficial effects can be referred to the first aspect.

[0017] In conjunction with the second aspect, some implementations of the second aspect further include: sending second information to the first communication device, the second information being used to indicate the association between the first transmission timing and the paging timing in the first public search space, the paging timing in the first public search space including the first transmission timing.

[0018] In conjunction with the second aspect, in some implementations of the second aspect, the second information indicates the number of first transmission opportunities included in a paging cycle corresponding to the first communication device within the first public search space.

[0019] In conjunction with the second aspect, in some implementations of the second aspect, the number of the first transmission opportunities included in a paging cycle corresponding to the first communication device within the first public search space is 4, 2, 1, 1 / 2, or 1 / 4.

[0020] In conjunction with the second aspect, some implementations of the second aspect further include: sending configuration information of the first common search space to the first communication device, wherein the RNTI corresponding to the first transmission timing in the first common search space is different from the RNTI corresponding to the paging timing in the second common search space.

[0021] In conjunction with the second aspect, some implementations of the second aspect further include: if the time domain resources of the third transmission timing within the dedicated search space overlap with the time domain resources of the first transmission timing, the downlink control information is not transmitted during the third transmission timing.

[0022] In conjunction with the second aspect, in some implementations of the second aspect, the first information includes at least one of public alarm information, earthquake and tsunami alarm information, or commercial mobile alarm information.

[0023] In conjunction with the second aspect, some implementations of the second aspect further include: receiving first capability information from the first communication device, the first capability information indicating that the first communication device has the capability to detect the first public search space and the dedicated search space.

[0024] Thirdly, a method for transmitting information is provided. This method can be applied to a first communication device in an RRC connection state, for example, executed by the first communication device. The first communication device can be a terminal or a module applied to the terminal (e.g., a circuit, chip, chip system, or processor), or it can be a logic node, logic module, or software that can realize all or part of the terminal functions.

[0025] The method includes: receiving configuration information of a dedicated search space; and detecting first information based on the transmission timing within the dedicated search space, wherein the first information includes at least one of public alarm information, earthquake and tsunami alarm information, or commercial mobile alert information. The earthquake and tsunami alarm information or commercial mobile alert information can be understood as a type of public alarm information.

[0026] Based on the above technical solution, the first communication device in the RRC connection state can detect the first information according to the transmission timing in the dedicated search space. The first information can be at least one of public alarm information, earthquake and tsunami alarm information, or commercial mobile alarm information. Therefore, this embodiment enables the first communication device in the RRC connection state to detect multiple types of information.

[0027] In conjunction with the third aspect, in some implementations of the third aspect, detecting the first information based on the transmission timing within the dedicated search space includes: detecting downlink control information during the transmission timing within the dedicated search space; and detecting the first information on the downlink data channel scheduled by the downlink control information. In this implementation, the first information is transmitted on the downlink data channel.

[0028] In conjunction with the third aspect, in some implementations of the third aspect, the Media Access Control (MAC) CE carried by the downlink data channel includes the first information.

[0029] In conjunction with the third aspect, in certain implementations of the third aspect, detecting the first information based on the transmission timing within the dedicated search space includes: detecting the first information based on the transmission timing within the dedicated search space. In this implementation, the first information is transmitted on the downlink control channel.

[0030] In conjunction with the third aspect, some implementations of the third aspect further include: sending second capability information, wherein the second capability information indicates that the first communication device has the capability to detect the first information according to the dedicated search space. Based on this implementation, the second communication device can be aware that the first communication device has the capability to detect the first information according to the dedicated search space, and thus send the first information to the first communication device during transmission within the dedicated search space.

[0031] Fourthly, a method for transmitting information is provided, which can be applied to a second communication device, such as being executed by the second communication device. The second communication device can be a network device or a module (e.g., circuit, chip, chip system, or processor) applied to a network device, or it can be a logical node, logical module, or software that can realize all or part of the functions of the network device.

[0032] The method includes: sending configuration information of a dedicated search space to a first communication device, the first communication device being a communication device in an RRC connected state; and sending first information to the first communication device according to the transmission timing within the dedicated search space, the first information including at least one of public alarm information, earthquake and tsunami alarm information, or commercial mobile alarm information.

[0033] The method provided in the fourth aspect is the method on the second communication device side corresponding to the third aspect, and its beneficial effects can be referred to the third aspect.

[0034] In conjunction with the fourth aspect, in some implementations of the fourth aspect, sending the first information to the first communication device according to the transmission timing within the dedicated search space includes: sending downlink control information to the first communication device during the transmission timing within the dedicated search space; and sending the first information to the first communication device on the downlink data channel scheduled by the downlink control information.

[0035] In conjunction with the fourth aspect, in some implementations of the fourth aspect, the MAC CE carried by the downlink data channel includes the first information.

[0036] In conjunction with the fourth aspect, in some implementations of the fourth aspect, sending the first information to the first communication device according to the transmission timing within the dedicated search space includes: sending the first information to the first communication device according to the transmission timing within the dedicated search space.

[0037] In conjunction with the fourth aspect, some implementations of the fourth aspect further include: receiving second capability information from the first communication device, the second capability information indicating that the first communication device has the capability to detect the first information according to the dedicated search space.

[0038] Fifthly, a communication device is provided, which can be the first communication device described in the first aspect. The communication device includes: a processing module for determining a first transmission opportunity in a first common search space and detecting first information; a transceiver module for detecting the first information in the first transmission opportunity in the first common search space; the transceiver module is further configured to detect downlink control information in a second transmission opportunity in a dedicated search space, the downlink control information being used to indicate the resources of a data channel or to indicate the re-initiation of random access, wherein the time domain resources of the second transmission opportunity do not overlap with those of the first transmission opportunity.

[0039] In conjunction with the fifth aspect, in some implementations of the fifth aspect, the transceiver module is further configured to receive second information, the second information being used to indicate the association between the first transmission timing and the paging timing in the first public search space, the paging timing in the first public search space including the first transmission timing.

[0040] In conjunction with the fifth aspect, in some implementations of the fifth aspect, the second information indicates the number of the first transmission opportunities included in a paging cycle corresponding to the first communication device within the first public search space.

[0041] In conjunction with the fifth aspect, in some implementations of the fifth aspect, the number of the first transmission opportunities included in a paging cycle corresponding to the first communication device within the first public search space is 4, 2, 1, 1 / 2, or 1 / 4.

[0042] In conjunction with the fifth aspect, in some implementations of the fifth aspect, the transceiver module is further configured to receive configuration information of the first public search space, wherein the Radio Network Temporary Identifier (RNTI) corresponding to the first transmission opportunity in the first public search space is different from the RNTI corresponding to the paging opportunity in the second public search space.

[0043] In conjunction with the fifth aspect, in some implementations of the fifth aspect, the transceiver module is further configured to not detect the downlink control information in the third transmission timing when the time domain resources of the third transmission timing within the dedicated search space overlap with the time domain resources of the first transmission timing.

[0044] In conjunction with the fifth aspect, in some implementations of the fifth aspect, the first information includes at least one of public alarm information, earthquake and tsunami alarm information, or commercial mobile alarm information.

[0045] In conjunction with the fifth aspect, in some implementations of the fifth aspect, the transceiver module is further configured to send first capability information, the first capability information indicating that the first communication device has the capability to detect the first public search space and the dedicated search space.

[0046] In conjunction with the fifth aspect, in some implementations of the fifth aspect, the processing module is further configured to determine that it has the capability to detect the first public search space and the dedicated search space.

[0047] In a sixth aspect, a communication device is provided, which can be the second communication device described in the second aspect. The communication device includes: a processing module for determining first information; and a transceiver module for sending the first information to a first communication device at a first transmission timing within a first common search space, wherein the first communication device is a communication device in an RRC connected state; the transceiver module is further configured to send downlink control information to the first communication device at a second transmission timing within a dedicated search space, wherein the downlink control information is used to indicate data channel resources or indicate re-initiation of random access, and the time domain resources of the second transmission timing and the first transmission timing do not overlap.

[0048] In conjunction with the sixth aspect, in some implementations of the sixth aspect, the processing module is further configured to determine second information; the transceiver module is further configured to send the second information to the first communication device, the second information being used to indicate the association between the first transmission timing and the paging timing in the first public search space, the paging timing in the first public search space including the first transmission timing.

[0049] In conjunction with the sixth aspect, in some implementations of the sixth aspect, the second information indicates the number of first transmission opportunities included in a paging cycle corresponding to the first communication device within the first public search space.

[0050] In conjunction with the sixth aspect, in some implementations of the sixth aspect, the number of the first transmission opportunities included in a paging cycle corresponding to the first communication device within the first public search space is 4, 2, 1, 1 / 2, or 1 / 4.

[0051] In conjunction with the sixth aspect, in some implementations of the sixth aspect, the transceiver module is further configured to send configuration information of the first common search space to the first communication device, wherein the RNTI corresponding to the first transmission timing in the first common search space is different from the RNTI corresponding to the paging timing in the second common search space.

[0052] In conjunction with the sixth aspect, in some implementations of the sixth aspect, the transceiver module is further configured to not transmit the downlink control information in the third transmission timing if the time domain resources of the third transmission timing in the dedicated search space overlap with the time domain resources of the first transmission timing.

[0053] In conjunction with the sixth aspect, in some implementations of the sixth aspect, the first information includes at least one of public alarm information, earthquake and tsunami alarm information, or commercial mobile alarm information.

[0054] In conjunction with the sixth aspect, in some implementations of the sixth aspect, the transceiver module is further configured to receive first capability information from the first communication device, the first capability information indicating that the first communication device has the capability to detect the first common search space and the dedicated search space.

[0055] In a seventh aspect, a communication device is provided, which can be the first communication device described in the third aspect. The communication device includes: a transceiver module for receiving configuration information of a dedicated search space; a processing module for determining, based on the transmission timing within the dedicated search space, to detect first information; the transceiver module is further configured to detect the first information based on the transmission timing within the dedicated search space, the first information including at least one of public alarm information, earthquake and tsunami alarm information, or commercial mobile alarm information.

[0056] In conjunction with the seventh aspect, in some implementations of the seventh aspect, the transceiver module is specifically used to: detect downlink control information during the transmission timing within the dedicated search space; and detect the first information on the downlink data channel scheduled by the downlink control information.

[0057] In conjunction with the seventh aspect, in some implementations of the seventh aspect, the Media Access Control (MAC) control element (CE) carried by the downlink data channel includes the first information.

[0058] In conjunction with the seventh aspect, in some implementations of the seventh aspect, the transceiver module is specifically used to detect the first information during the transmission timing within the dedicated search space.

[0059] In conjunction with the seventh aspect, in some implementations of the seventh aspect, the transceiver module is further configured to send second capability information, the second capability information indicating that the first communication device has the capability to detect the first information according to the dedicated search space.

[0060] In conjunction with the seventh aspect, in some implementations of the seventh aspect, the processing module is further configured to determine that it has the capability to detect the first information based on the dedicated search space.

[0061] Eighthly, a communication device is provided, which can be the second communication device described in the fourth aspect. The communication device includes: a processing module for determining configuration information of a dedicated search space; a transceiver module for sending the configuration information of the dedicated search space to a first communication device, wherein the first communication device is a communication device in an RRC connection state; the transceiver module is further configured to send first information to the first communication device according to the transmission timing within the dedicated search space, wherein the first information includes at least one of public alarm information, earthquake and tsunami alarm information, or commercial mobile alarm information.

[0062] In conjunction with the eighth aspect, in some implementations of the eighth aspect, the transceiver module is specifically used to: send downlink control information to the first communication device during the transmission timing within the dedicated search space; and send the first information to the first communication device on the downlink data channel scheduled by the downlink control information.

[0063] In conjunction with the eighth aspect, in some implementations of the eighth aspect, the MAC CE carried by the downlink data channel includes the first information.

[0064] In conjunction with the eighth aspect, in some implementations of the eighth aspect, the transceiver module is specifically used to send the first information to the first communication device at the transmission timing within the dedicated search space.

[0065] In conjunction with the eighth aspect, in some implementations of the eighth aspect, the transceiver module is further configured to receive second capability information from the first communication device, the second capability information indicating that the first communication device has the capability to detect the first information according to the dedicated search space.

[0066] A ninth aspect provides a communication device comprising: a processor configured to implement the method as described in the first aspect or any possible implementation thereof. Optionally, the communication device further comprises an interface circuit configured to receive signals from other communication devices and transmit them to the processor, or to send signals from the processor to other communication devices.

[0067] A tenth aspect provides a communication device comprising: a processor configured to implement the method as described in the second aspect or any possible implementation thereof. Optionally, the communication device further comprises an interface circuit configured to receive signals from other communication devices and transmit them to the processor, or to send signals from the processor to other communication devices.

[0068] Eleventhly, a communication device is provided, comprising: a processor configured to implement the method as described in the third aspect or any possible implementation thereof. Optionally, the communication device further comprises an interface circuit configured to receive signals from other communication devices and transmit them to the processor, or to send signals from the processor to other communication devices.

[0069] In a twelfth aspect, a communication device is provided, comprising: a processor configured to implement the methods of the fourth aspect or any possible implementation thereof. Optionally, the communication device further comprises an interface circuit configured to receive signals from other communication devices and transmit them to the processor, or to send signals from the processor to other communication devices.

[0070] In a thirteenth aspect, a communication system is provided, comprising a first communication device for performing the method as described in the first aspect and a second communication device for performing the method as described in the second aspect; or, the communication system comprises a first communication device for performing the method as described in the third aspect and a second communication device for performing the method as described in the fourth aspect.

[0071] In a fourteenth aspect, a computer-readable storage medium is provided, the computer-readable medium storing a computer program; when the computer program is executed by a processor, the methods in the first to fourth aspects or any possible implementation of the first to fourth aspects are performed.

[0072] In a fifteenth aspect, a computer program product is provided, the computer program product comprising a computer program that, when executed, causes the methods of the first to fourth aspects or any possible implementation thereof to be performed.

[0073] The solutions provided in aspects five through fifteen above are used to implement or cooperate with the methods provided in aspects one, two, three or four above, and therefore can achieve the same or corresponding beneficial effects as aspects one, two, three or four, which will not be elaborated here. Attached Figure Description

[0074] Figure 1 This is a schematic diagram of the architecture of a communication system applicable to the embodiments of this application;

[0075] Figure 2 This is an example diagram of an open radio access network (open RAN, O-RAN, or ORAN) system;

[0076] Figure 3 A schematic flowchart illustrating an information transmission method provided in an embodiment of this application;

[0077] Figure 4 A schematic diagram illustrating the timing of paging within the first public search space;

[0078] Figure 5 A schematic flowchart illustrating another information transmission method provided in an embodiment of this application;

[0079] Figure 6 and Figure 7 A schematic diagram of the structure of a possible communication device provided in an embodiment of this application. Detailed Implementation

[0080] The technical solution provided in this application will now be described with reference to the accompanying drawings.

[0081] The embodiments of this application can be applied to various communication systems, such as NB-IoT systems, long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, worldwide interoperability for microwave access (WiMAX) communication systems, satellite communication systems, 5th generation (5G) systems, or future communication network systems. The methods provided in this application can be applied to terrestrial communication network systems as well as non-terrestrial network (NTN) communication systems. The NTN system can be an NTN system integrated with 4G, 5G, and any future generation of communication systems, such as NR NTN, Internet of Things (IoT) NTN, etc. NTN communication systems can be, for example, satellite communication systems, and can also include unmanned aerial vehicles (UAVs), high altitude platform stations (HAPS), and other airborne access network equipment; this application does not limit this.

[0082] Figure 1 This is a schematic diagram of the architecture of a communication system applicable to embodiments of this application. The communication system 1000 includes a radio access network (RAN) 100 and a core network (CN) 200; optionally, the communication system 1000 may also include an Internet 300. The RAN 100 includes at least one RAN node (e.g., ...). Figure 1 110a and 110b (collectively referred to as 110) and at least one terminal (such as Figure 1 120a-120j are collectively referred to as 120. The RAN may also include other RAN nodes, such as wireless relay devices and / or wireless backhaul devices. Figure 1(Not shown in the image). Terminal 120 is connected to RAN node 110 wirelessly. RAN node 110 is connected to core network 200 wirelessly or via wired connection. The core network equipment in core network 200 and RAN node 110 in RAN 100 can be different physical devices, or they can be the same physical device integrating core network logical functions and radio access network logical functions.

[0083] RAN 100 can be a cellular system related to the 3rd generation partnership project (3GPP), such as 4G, 5G mobile communication systems, NTN systems, or future communication network systems. RAN 100 can also be O-RAN, cloud radio access network (CRAN), or wireless fidelity (WiFi) systems, or a communication system that integrates two or more of the above systems.

[0084] The terminal 120 involved in this application embodiment can also be referred to as a terminal device, user equipment (UE), mobile station, mobile terminal, etc. Terminals can be widely used in various scenarios, such as NTN, device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (IoT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grids, smart furniture, smart offices, smart wearables, smart transportation, smart cities, etc. Terminals can be mobile phones, tablets, computers with wireless transceiver capabilities, wearable devices, vehicles, drones, helicopters, airplanes, ships, robots, robotic arms, smart home devices, etc. Terminals can also be communication modules with satellite communication capabilities, satellite phones or their components, or satellite communication terminals, such as very small aperture terminals (VSAT) (commonly referred to as VSAT terminals), portable stations, fixed stations, vehicle-mounted or airborne satellite communication terminals, etc. It should be understood that satellite communication terminals can serve as micro base stations to further provide data interfaces to accessed user equipment.

[0085] The RAN node 110 involved in this embodiment can also be called an access network device, RAN entity, or access node, etc., and constitutes part of the communication system to help the terminal achieve wireless access. Multiple RAN nodes 110 in the communication system 1000 can be nodes of the same type or different types. In some scenarios, the roles of the RAN node 110 and the terminal 120 are relative, for example, Figure 1 Network element 120i can be a helicopter or a drone, and it can be configured as a mobile base station. For terminals 120j that access RAN 100 through network element 120i, network element 120i is a base station; however, for base station 110a, network element 120i is a terminal. RAN node 110 and terminal 120 are sometimes referred to as communication devices, for example... Figure 1 Network elements 110a and 110b can be understood as communication devices with base station functions, while network elements 120a-120j can be understood as communication devices with terminal functions.

[0086] In one possible scenario, a RAN node can be a base station, an evolved NodeB (eNodeB), an access point (AP), a transmission reception point (TRP), a next-generation NodeB (gNB), or a base station in a future communication network system. A RAN node can also be a macro base station (such as...). Figure 1 110a), micro base stations or indoor stations (such as Figure 1RAN nodes can be 110b, relay nodes, donor nodes, or wireless controllers in CRAN scenarios. RAN nodes can also be satellites (or satellite base stations) or high altitude platform stations (HAPS), or base station equipment mounted on satellites / HAPS. Satellites can include at least one of the following: geostationary earth orbit (GEO) satellites or non-geostationary earth orbit (NGEO) satellites. Non-geostationary earth orbit satellites can include at least one of the following: medium earth orbit (MEO) satellites or low earth orbit (LEO) satellites. There are no restrictions here. RAN nodes can also be gateway stations (or ground stations, earth stations, signal gateways, or gateway stations). Optionally, RAN nodes can also be servers, wearable devices, vehicles, or in-vehicle equipment. For example, the access network equipment in vehicle-to-everything (V2X) technology can be a roadside unit (RSU).

[0087] In another possible scenario, multiple RAN nodes collaborate to assist the terminal in achieving wireless access, with different RAN nodes implementing some of the base station's functions. For example, RAN nodes can be CU, DU, CU (control plane, CP), CU (user plane, UP), or radio unit (RU), etc. CU and DU can be set up separately or included in the same network element, such as the baseband unit (BBU). The CU and DU nodes separate the gNB's protocol layers; some protocol layer functions are centrally controlled by the CU, while the remaining partial or all protocol layer functions are distributed in the DU, which is centrally controlled by the CU. As one implementation, the CU deploys the radio resource control (RRC) layer, packet data convergence protocol (PDCP) layer, and service data adaptation protocol (SDAP) layer from the protocol stack; the DU deploys the radio link control (RLC) layer, media access control (MAC) layer, and physical layer (PHY) from the protocol stack. Therefore, the CU has RRC, PDCP, and SDAP processing capabilities. The DU has RLC, MAC, and PHY processing capabilities. It is understood that the above functional division is merely an example and does not constitute a limitation on the CU and DU. The RU can be included in radio frequency equipment or radio frequency units, such as in a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH).

[0088] In different systems, RAN nodes may have different names. For example, in an O-RAN system, a CU can be called an open CU (O-CU), a DU can be called an open DU (O-DU), and an RU can be called an open RU (O-RU). The RAN nodes in the embodiments of this application can be implemented through software modules, hardware modules, or a combination of software and hardware modules. For example, a RAN node can be a server loaded with the corresponding software modules. The embodiments of this application do not limit the specific technology or device form used for the RAN nodes.

[0089] Figure 2This is an example diagram of an O-RAN system, which may include... Figure 2 Other components besides those shown. For example... Figure 2 As shown, access network equipment (such as eNB, gNB, or next-generation access network equipment) communicates with the CN via a backhaul link and with the terminal via an air interface.

[0090] Specifically, the baseband unit (BBU) in the access network equipment communicates with the core network via a backhaul link, and the radio unit (RU) in the access network equipment communicates with at least one terminal via an air interface. The BBU communicates with at least one RU via a fronthaul link. The BBU and RU may or may not be co-located.

[0091] The BBU includes at least one CU and at least one DU, which can communicate via at least one midhaul link.

[0092] There is an interface between the DU and RU. Depending on the functions of the DU and RU, and / or the different switching methods, the interface between the DU and RU can be a common public radio interface (CPRI) or an enhanced common public radio interface (eCPRI).

[0093] To facilitate understanding of the embodiments of this application, the technical solutions related to the embodiments of this application will be briefly introduced below.

[0094] 1. Type-1CSS: Type-1CSS is configured to the terminal by the network side through the system information block (SIB). The paging occasion (PO) in Type-1CSS is used to monitor paging messages. The terminal can try to detect downlink control information (DCI) scrambled with paging radio network temporary identifier (P-RNTI) on the PO of each paging cycle.

[0095] 2. Type-2 CSS: The transmission timing in type-2 CSS is used to detect random access response (RAR) messages. The terminal can obtain RAR messages in each cycle by monitoring the physical downlink control channel (PDCCH) to obtain uplink resources.

[0096] 3. USS: PDCCH used for timing monitoring of transmissions of terminals in RRC connected state. This PDCCH carries downlink control information for scheduling data transmission or indicating the re-initiation of random access.

[0097] In the NB-IoT system, terminals in the RRC_idle state can obtain public alarm information by monitoring type-1CSS. The public alarm information can be at least one of earthquake and tsunami alarm information or commercial mobile alarm information.

[0098] When a terminal in RRC_idle attempts to receive a DCI scrambled by P-RNTI during paging, it can acquire the information if the DCI received by the terminal in RRC_idle indicates at least one of the following: earthquake / tsunami alarm information or commercial mobile alarm information.

[0099] Currently, in the NB-IoT system, terminals in RRC connection state cannot obtain public alarm information.

[0100] Therefore, this application provides an information transmission method that enables a terminal in RRC connection state to obtain common alarm information.

[0101] The first communication device in this application can be a terminal or a module applied to a terminal (e.g., a circuit, chip, chip system, or processor), or it can be a logic node, logic module, or software capable of implementing all or part of the terminal's functions. The second communication device in this application can be a network device or a module applied to a network device (e.g., a circuit, chip, chip system, or processor), or it can be a logic node, logic module, or software capable of implementing all or part of the network device's functions.

[0102] The chip can be a modem chip, also known as a baseband chip; or a system-on-a-chip (SoC) chip containing a modem core; or a system-in-package (SIP) chip. The network device in this embodiment can be a base station. Furthermore, the processing performed by a single execution entity can be divided into multiple execution entities, which can be logically and / or physically separated. For example, the processing performed by the network device can be divided into at least one execution entity among CU, DU, RU, etc.

[0103] Considering the power consumption and complexity of NB-IoT devices, as specified in the 3GPP technical specification TS36.213 V18.3.0, NB-IoT devices can only detect one type of search space at a time. In an NB-IoT system, a terminal in RRC connected state will only detect the USS, and a terminal in RRC connected state can only obtain downlink control information by detecting the USS. Therefore, Figure 3 A schematic flowchart of an information transmission method 300 is provided, which enables a terminal in the RRC connection state to detect two types of search space and to obtain various types of information.

[0104] S310, during a first transmission opportunity within the first common search space, the second communication device sends first information to the first communication device, where the first communication device is in an RRC connected state. Correspondingly, during the first transmission opportunity within the first common search space, the first communication device detects the first information.

[0105] Specifically, the first communication device detecting the first information during a first transmission opportunity within the first common search space can be understood as the first communication device monitoring the PDCCH during the first transmission opportunity within the first common search space to obtain the first information. In the case where the first communication device is a communication device in NB-IoT, it can be understood as the first communication device monitoring the narrowband physical downlink control channel (NPDCCH) during the first transmission opportunity within the first common search space to obtain the first information.

[0106] For example, the first information includes at least one of public alarm information, earthquake and tsunami warning information, or commercial mobile alert information. Earthquake and tsunami warning information or commercial mobile alert information can be understood as a type of public alarm information. Based on this implementation, a first communication device in RRC connected state can obtain public alarm information by detecting a first public search space.

[0107] Optionally, the first information may also be other information besides public alarm information, earthquake and tsunami alarm information, and commercial mobile alarm information; this application does not limit this information.

[0108] It should be noted that, in the embodiments of this application, the definition of the first public search space can be implemented in two ways: one is that the first public search space is the type-1CSS defined in the existing standard protocol; the other is that the first public search space is a public search space newly defined in this application.

[0109] In the first implementation, the first common search space is type-1CSS, and the paging timing within type-1CSS includes the first transmission timing. That is, the first transmission time is all or part of the paging timing within type-1CSS; type-1CSS can be called the first type of CSS.

[0110] Optionally, in step S311, before the second communication device sends the first information to the first communication device, the second communication device sends second information to the first communication device. This second information indicates the association between the first transmission timing and the paging timing within the first common search space, where the paging timing within the first common search space includes the first transmission timing. Correspondingly, the first communication device receives the second information from the second communication device and determines the first transmission timing based on the second information.

[0111] It should be noted that the paging timing within the first public search space includes the paging timing corresponding to the first communication device and the paging timing corresponding to other first communication devices. Figure 4 This is a diagram illustrating the timing of paging within the first public search space.

[0112] For example, the second information indicates the number of first transmission opportunities included in a paging cycle corresponding to the first communication device within the first public search space. For example, the number of first transmission opportunities included in a paging cycle corresponding to the first communication device can be 4, 2, 1, 1 / 2, or 1 / 4, and may also be other values, without limitation. Based on this example, the number of first transmission opportunities included in a paging cycle corresponding to the first communication device can be adjusted according to the timeliness requirements of the first information. For example, if the timeliness requirement of the first information is high, the number of first transmission opportunities included in a paging cycle corresponding to the first communication device can be increased; if the timeliness requirement of the first information is low, the number of first transmission opportunities included in a paging cycle corresponding to the first communication device can be decreased to save resource consumption.

[0113] For example, if the second information indicates that the number of first transmission opportunities included in a paging cycle corresponding to the first communication device in the first public search space is 1, then all paging opportunities corresponding to the first communication device are first transmission opportunities, and the first communication device detects the first information in each paging opportunity corresponding to the first communication device.

[0114] For example, if the second information indicates that the number of first transmission opportunities included in a paging cycle corresponding to the first communication device in the first public search space is 1 / 2, then one of the two paging opportunities corresponding to the first communication device is a first transmission opportunity, and the cycle of the first transmission opportunity can be twice the paging cycle corresponding to the first communication device. The first communication device detects the first information once every two paging opportunities corresponding to the first communication device.

[0115] For example, if the second information indicates that the number of first transmission opportunities included in a paging cycle corresponding to the first communication device in the first public search space is 2, then both paging opportunities in a paging cycle corresponding to the first communication device are first transmission opportunities. One of the two paging opportunities can be the paging opportunity corresponding to the first communication device, and the other paging opportunity can be the paging opportunity corresponding to another communication device. The first communication device detects the first information twice in a paging cycle corresponding to the first communication device.

[0116] It should be noted that in the first implementation, the first communication device in the RRC connection state does not need to detect paging messages in the first common search space, but only needs to detect the first information at the first transmission time in the first common search space.

[0117] For example, the second information may be sent by the second communication device to the first communication device via an RRC message, or by the second communication device to the first communication device via an SIB, or by the second communication device to the first communication device via other means. This application does not limit the scope of the information.

[0118] In the second implementation, the first public search space is a newly configured public search space on the network side for monitoring the first information. This first public search space is neither type-1 CSS nor type-2 CSS; the newly configured public search space on the network side can be called the second type of CSS.

[0119] Optionally, in step S312, before the second communication device sends the first information to the first communication device, the second communication device sends configuration information of a first common search space to the first communication device. The RNTI corresponding to the first transmission timing in the first common search space is different from the RNTI corresponding to the paging timing in the second common search space, wherein the second common search space is type-1CSS. Correspondingly, the first communication device receives the configuration information of the first common search space from the second communication device.

[0120] It should be noted that the first transmission timing within the first common search space and the paging timing within the second common search space (type-1CSS) can overlap, but the period of the first transmission timing within the first common search space and the period of the paging timing within the second common search space can be different. The period of the first transmission timing within the first common search space can be configured by the second communication device. This second implementation allows the period of the first transmission timing to be independent of the paging period, thus making the setting of the first transmission timing period more flexible. Furthermore, it can avoid conflicts between the RNTI corresponding to the first common search space used for detecting first information and the RNTI corresponding to the second common search space (type-1CSS) used for detecting paging messages.

[0121] In step S320, during a second transmission opportunity within the dedicated search space, the second communication device sends downlink control information to the first communication device. This downlink control information is used to indicate data channel resources or to indicate the re-initiation of random access. The time-domain resources of the second transmission opportunity and the first transmission opportunity do not overlap. Correspondingly, during the second transmission opportunity within the dedicated search space, the first communication device detects the downlink control information. Since the time-domain resources of the second transmission opportunity and the first transmission opportunity do not overlap, the first communication device detects the first information and the downlink control information in a time-division manner, which can reduce the power consumption of the first communication device. In this embodiment, the dedicated search space is USS.

[0122] Specifically, the second transmission timing detection of downlink control information by the first communication device within the dedicated search space can be understood as the first communication device monitoring the PDCCH during the second transmission timing within the dedicated search space to obtain downlink control information. In the case where the first communication device is a communication device in NB-IoT, this can be understood as the first communication device monitoring the NPDCCH during the second transmission timing within the dedicated search space to obtain downlink control information.

[0123] It should be noted that step S320 can be executed after step S310 or before step S310, and this application does not limit this.

[0124] In the technical solution provided in the embodiments of this application, the first communication device in the RRC connection state can detect the first information in the first transmission time in the first common search space and detect the downlink control information in the second transmission time in the dedicated search space. The time domain resources of the second transmission time and the first transmission time do not overlap. Therefore, the first communication device in the RRC connection state can detect the two types of search space in a time-division manner, and the first communication device in the RRC connection state can detect multiple types of information.

[0125] Optionally, before the second communication device sends the first information to the first communication device, the first communication device sends first capability information to the second communication device. This first capability information indicates that the first communication device has the ability to detect a first common search space and a dedicated search space. Correspondingly, the second communication device receives the first capability information from the first communication device. Based on this implementation, the second communication device can know that the first communication device has the ability to detect the first common search space and the dedicated search space, thereby sending the first information to the first communication device during a first transmission opportunity in the first common search space, and sending downlink control information to the first communication device during a second transmission opportunity in the dedicated search space.

[0126] For example, when the first communication device has the capability to detect a first common search space and a dedicated search space, the protocol predefines that the first communication device can detect first information at a first transmission timing within the first common search space and detect downlink control information at a second transmission timing within the dedicated search space. For example, after the second communication device learns from the first capability information that the first communication device has the capability to detect the first common search space and the dedicated search space, the second communication device sends first instruction information to the first communication device. This first instruction information instructs the first communication device to detect first information at the first transmission timing within the first common search space and to detect downlink control information at the second transmission timing within the dedicated search space; correspondingly, the first communication device receives the first instruction information from the second communication device.

[0127] For example, before the first communication device sends the first capability information to the second communication device, the first communication device determines that it has the capability to detect the first common search space and the dedicated search space.

[0128] Optionally, if the time-domain resources of the third transmission opportunity within the dedicated search space overlap with those of the first transmission opportunity, the second communication device does not transmit downlink control information during the third transmission opportunity; correspondingly, the first communication device does not detect downlink control information during the third transmission opportunity. This can be understood as follows: when the third transmission opportunity within the dedicated search space overlaps with the first transmission opportunity within the first common search space, the first transmission opportunity in the first common search space has a higher priority than the third transmission opportunity within the dedicated search space. Based on this optional implementation, to reduce the power consumption of the first communication device, only one type of search space is detected at a time. When the third transmission opportunity within the dedicated search space overlaps with the first transmission opportunity in the first common search space, the first information is transmitted during the first transmission opportunity, and downlink control information is not transmitted during the third transmission opportunity. This allows the first information to be transmitted with priority, further improving the timeliness of the first information.

[0129] For example, if the time domain resources of the third transmission opportunity in the dedicated search space partially or completely overlap with the time domain resources of the first transmission opportunity, the second communication device does not send downlink control information during the third transmission opportunity; correspondingly, the second communication device does not detect downlink control information during the third transmission opportunity.

[0130] In NB-IoT systems, terminals in RRC connected state can only obtain downlink control information by detecting the USS. Therefore, Figure 5 This is a schematic flowchart of another information transmission method 500 provided in an embodiment of this application. This method enables a first communication device (terminal) in an RRC connection state to obtain various types of information by detecting the USS.

[0131] S510, the second communication device sends configuration information of the dedicated search space to the first communication device, which is in RRC connected state. Correspondingly, the first communication device receives the configuration information of the dedicated search space from the second communication device. In this embodiment, the dedicated search space is USS.

[0132] S520, the second communication device sends first information to the first communication device according to the transmission timing within the dedicated search space. This first information includes at least one of public alarm information, earthquake / tsunami alarm information, or commercial mobile alert information. Correspondingly, the first communication device detects the first information according to the transmission timing within the dedicated search space. Here, earthquake / tsunami alarm information or commercial mobile alert information can be understood as a type of public alarm information.

[0133] In the technical solution provided in the embodiments of this application, the first communication device in the RRC connection state can detect the first information according to the transmission timing in the dedicated search space. The first information can be at least one of public alarm information, earthquake and tsunami alarm information, or commercial mobile alarm information. Therefore, this embodiment can enable the first communication device in the RRC connection state to detect multiple types of information.

[0134] For example, specific implementations of transmitting the first information according to the transmission timing within the dedicated search space include, but are not limited to, the following two.

[0135] In the first implementation, during transmission within the dedicated search space, the second communication device sends downlink control information to the first communication device. This downlink control information indicates the resources of the downlink data channel. Correspondingly, the first communication device detects the downlink control information during transmission within the dedicated search space. The second communication device then sends first information to the first communication device on the downlink data channel scheduled by the downlink control information. Correspondingly, the first communication device detects the first information on the downlink data channel scheduled by the downlink control information. In this implementation, the first information is transmitted on the downlink data channel.

[0136] For example, when the first communication device is a communication device in NB-IoT, the downlink data channel can be a narrow band physical downlink shared channel (NPDSCH).

[0137] Optionally, the media access control element (MAC CE) carried by the downlink data channel includes the first information. This can be understood as the second communication device sending the first information to the first communication device via the MAC CE.

[0138] In the second implementation, the second communication device sends first information to the first communication device during transmission within the dedicated search space. Correspondingly, the first communication device detects the first information during transmission within the dedicated search space.

[0139] In this implementation, the first communication device detecting the first information during transmission within the dedicated search space can be understood as the first communication device monitoring the PDCCH during transmission within the dedicated search space to obtain the first information. When the first communication device is a communication device in NB-IoT, it can be understood as the first communication device monitoring the NPDCCH during transmission within the dedicated search space to obtain the first information. In this implementation, the first information is transmitted on the downlink control channel.

[0140] For example, the first information is carried in downlink control information used to send the NPDCCH order. The NPDCCH order is used to indicate the re-initiation of random access, and the downlink control information used to send the NPDCCH order is in DCI format N1. For example, since the NPDCCH order occupies fewer bits, the first information is carried in the reserved bits other than those used to indicate the NPDCCH order. In this example, the NPDCCH order sent by the second communication device is invalid. Another example is that all reserved bits other than those originally used to indicate the NPDCCH order are set to 0 to indicate that the downlink control information is used to send the first information, and the bits originally used to indicate the NPDCCH order are used to carry the first information. In this example, the second communication device does not send the NPDCCH order.

[0141] Optionally, before the second communication device sends the first information to the first communication device according to the transmission timing within the dedicated search space, the first communication device sends second capability information to the second communication device. This second capability information indicates that the first communication device possesses the capability to detect the first information according to the dedicated search space. Correspondingly, the second communication device receives the second capability information from the first communication device. Based on this implementation, the second communication device can be aware that the first communication device possesses the capability to detect the first information according to the dedicated search space, thereby sending the first information to the first communication device during the transmission timing within the dedicated search space.

[0142] For example, when the first communication device has the capability to detect the first information based on a dedicated search space, the protocol predefines that the first communication device can detect the first information based on the transmission timing within the dedicated search space. For example, after the second communication device learns from the first capability information that the first communication device has the capability to detect the first information based on the dedicated search space, the second communication device sends second instruction information to the first communication device. This second instruction information instructs the first communication device to detect the first information based on the transmission timing within the dedicated search space; correspondingly, the first communication device receives the second instruction information from the second communication device.

[0143] For example, before the first communication device sends the second capability information to the second communication device, the first communication device determines that it has the capability to detect the first information based on a dedicated search space.

[0144] It is understood that, in order to achieve the functions in the above embodiments, the network device (base station) and terminal include hardware structures and / or software modules corresponding to perform each function. Those skilled in the art should readily recognize that, based on the units and method steps of the various examples described in conjunction with the embodiments disclosed in this application, this application can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed by hardware or by computer software driving hardware depends on the specific application scenario and design constraints of the technical solution.

[0145] The above describes the information transmission method provided by the embodiments of this application. The following will describe the execution subject used to perform the above information transmission method.

[0146] Figure 6 and Figure 7 This is a schematic diagram illustrating the structure of possible communication devices provided in embodiments of this application. These communication devices can be used to implement the functions of the first or second communication device in the above method embodiments, and therefore can also achieve the beneficial effects of the above method embodiments. In the embodiments of this application, the communication device can be as follows: Figure 1 The terminal 120 shown can also be as follows: Figure 1 The base station 110 shown can also be a module (such as a chip) applied to a terminal or base station.

[0147] like Figure 6 As shown, the communication device 600 includes a transceiver module 610 and a processing module 620. The communication device 600 is used to implement the above-mentioned... Figure 3 ,or Figure 5 The method embodiments shown depict the functions of the first or second communication device.

[0148] When the communication device 600 is used to implement Figure 3 The function of the first communication device in the method embodiment shown is as follows:

[0149] Processing module 620 is used to determine the first transmission timing within the first common search space and to detect the first information;

[0150] The transceiver module 610 is used to detect the first information at the first transmission time within the first common search space;

[0151] The transceiver module 610 is further configured to detect downlink control information during a second transmission opportunity within a dedicated search space. The downlink control information is used to indicate the resources of the data channel or to indicate the re-initiation of random access. The time domain resources of the second transmission opportunity do not overlap with those of the first transmission opportunity.

[0152] Optionally, the transceiver module 610 is further configured to receive second information, the second information being used to indicate the association between the first transmission timing and the paging timing in the first public search space, the paging timing in the first public search space including the first transmission timing.

[0153] Optionally, the transceiver module 610 is further configured to receive configuration information of the first public search space, wherein the Radio Network Temporary Identifier (RNTI) corresponding to the first transmission opportunity in the first public search space is different from the RNTI corresponding to the paging opportunity in the second public search space.

[0154] Optionally, the transceiver module 610 is further configured to not detect the downlink control information in the third transmission timing if the time domain resources of the third transmission timing in the dedicated search space overlap with the time domain resources of the first transmission timing.

[0155] Optionally, the transceiver module 610 is further configured to send first capability information, the first capability information indicating that the first communication device has the capability to detect the first public search space and the dedicated search space.

[0156] Optionally, the processing module 620 is further configured to determine that it has the capability to detect the first public search space and the dedicated search space.

[0157] When the communication device 600 is used to implement Figure 3 The function of the second communication device in the method embodiment shown is as follows:

[0158] Processing module 620 is used to determine the first information;

[0159] The transceiver module 610 is used to send first information to a first communication device during a first transmission time in the first common search space, wherein the first communication device is a communication device in an RRC connection state.

[0160] The transceiver module 610 is further configured to send downlink control information to the first communication device during a second transmission opportunity within a dedicated search space. The downlink control information is used to indicate the resources of the data channel or to indicate the re-initiation of random access. The time domain resources of the second transmission opportunity do not overlap with those of the first transmission opportunity.

[0161] Optionally, the processing module 620 is further configured to determine the second information;

[0162] The transceiver module 610 is further configured to send second information to the first communication device, the second information being used to indicate the association between the first transmission timing and the paging timing in the first public search space, the paging timing in the first public search space including the first transmission timing.

[0163] Optionally, the transceiver module 610 is further configured to send configuration information of the first common search space to the first communication device, wherein the RNTI corresponding to the first transmission timing in the first common search space is different from the RNTI corresponding to the paging timing in the second common search space.

[0164] Optionally, the transceiver module 610 is further configured to not transmit the downlink control information in the third transmission timing if the time domain resources of the third transmission timing in the dedicated search space overlap with the time domain resources of the first transmission timing.

[0165] Optionally, the transceiver module 610 is further configured to receive first capability information from the first communication device, the first capability information indicating that the first communication device has the capability to detect the first public search space and the dedicated search space.

[0166] When the communication device 600 is used to implement Figure 5 The function of the first communication device in the method embodiment shown is as follows:

[0167] The transceiver module 610 is used to receive configuration information for the dedicated search space;

[0168] Processing module 620 is used to determine the transmission timing within the dedicated search space and detect the first information;

[0169] The transceiver module 610 is further configured to detect first information based on the transmission timing within the dedicated search space, wherein the first information includes at least one of public alarm information, earthquake and tsunami alarm information, or commercial mobile alarm information.

[0170] Optionally, the transceiver module 610 is specifically used to: detect downlink control information during the transmission timing within the dedicated search space; and detect the first information on the downlink data channel scheduled by the downlink control information.

[0171] Optionally, the transceiver module 610 is specifically used to detect the first information during the transmission timing within the dedicated search space.

[0172] Optionally, the transceiver module 610 is further configured to send second capability information, the second capability information indicating that the first communication device has the capability to detect the first information according to the dedicated search space.

[0173] Optionally, the processing module 620 is further configured to determine that it has the capability to detect the first information based on the dedicated search space.

[0174] When the communication device 600 is used to implement Figure 5 The function of the second communication device in the method embodiment shown is as follows:

[0175] Processing module 620 is used to determine the configuration information of the dedicated search space;

[0176] The transceiver module 610 is used to send configuration information of the dedicated search space to the first communication device, which is a communication device in the RRC connection state.

[0177] The transceiver module 610 is further configured to send first information to the first communication device according to the transmission timing within the dedicated search space, wherein the first information includes at least one of public alarm information, earthquake and tsunami alarm information, or commercial mobile alarm information.

[0178] Optionally, the transceiver module 610 is specifically used for:

[0179] During the transmission timing within the dedicated search space, downlink control information is sent to the first communication device;

[0180] The first information is sent to the first communication device on the downlink data channel scheduled by the downlink control information.

[0181] Optionally, the transceiver module 610 is specifically used to send the first information to the first communication device during the transmission timing within the dedicated search space.

[0182] Optionally, the transceiver module 610 is further configured to receive second capability information from the first communication device, the second capability information indicating that the first communication device has the capability to detect the first information according to the dedicated search space.

[0183] For a more detailed description of the transceiver module 610 and the processing module 620 mentioned above, please refer to [link / reference]. Figure 3 ,or Figure 5 The relevant descriptions in the method embodiments shown.

[0184] like Figure 7 As shown, the communication device 700 is either the first communication device or the second communication device described above. The communication device 700 includes a processor 710, which implements the information transmission method provided in this application embodiment through logic circuits or by executing code instructions.

[0185] Optionally, the communication device 700 may also include interface circuitry 720. Processor 710 and interface circuitry 720 are coupled to each other. It is understood that interface circuitry 720 may be a transceiver or an input / output interface.

[0186] Optionally, the communication device 700 may also include a memory 730 for storing instructions executed by the processor 710, or storing input data required for the processor 710 to execute instructions, or storing data generated after the processor 710 executes instructions.

[0187] The aforementioned processor 710 may be an integrated circuit chip with signal processing capabilities. In implementation, each step of the above method embodiments can be completed by integrated logic circuits in the processor's hardware or by software instructions. The aforementioned processor may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor may be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this application can be directly embodied in the execution of a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules may reside in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. This storage medium is located in memory; the processor reads information from the memory and, in conjunction with its hardware, completes the steps of the above method.

[0188] This application also provides a communication system, including a first communication device and a second communication device in the information transmission method provided in this application.

[0189] This application also provides a computer-readable storage medium storing a computer program for implementing the methods in the above-described method embodiments. When the computer program is run on a computer, the computer can implement the methods in the above-described method embodiments.

[0190] This application also provides a computer program product, which includes a computer program that, when run on a computer, causes the methods in the above method embodiments to be executed.

[0191] This application also provides a chip, including a processor connected to a memory for storing computer programs, and the processor for executing the computer programs stored in the memory, so that the chip performs the methods described in the above method embodiments.

[0192] It should be understood that, in the embodiments of this application, for a technical feature, the technical features in that technical feature are distinguished by "first", "second" and "third", and there is no order of precedence or size among the technical features described by "first", "second" and "third".

[0193] Furthermore, the term "and / or" in this application is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship. The term "at least one" in this application can represent "one" and "two or more." For example, A, B, and C can represent: A existing alone, B existing alone, C existing alone, A and B existing simultaneously, A and C existing simultaneously, C and B existing simultaneously, and A, B, and C existing simultaneously.

[0194] In the embodiments of this application, "send" and "receive" indicate the direction of signal transmission. For example, "send information to XX" can be understood as the destination of the information being XX, which may include direct transmission via the air interface or indirect transmission via the air interface by other units or modules. "Receive information from YY" can be understood as the source of the information being YY, which may include direct reception from YY via the air interface or indirect reception from YY via the air interface by other units or modules. "Send" can also be understood as the "output" of the chip interface, and "receive" can also be understood as the "input" of the chip interface.

[0195] In other words, sending and receiving can occur between devices, such as between access network devices and terminals, or within a device, such as between components, modules, chips, software modules, or hardware modules within the device via buses, wiring, or interfaces.

[0196] It is understandable that information may undergo necessary processing, such as encoding and modulation, between the source and destination, but the destination can understand the valid information from the source. Similar statements in this application can be interpreted in a similar way and will not be elaborated further.

[0197] In the embodiments of this application, "instruction" can include direct and indirect instructions, as well as explicit and implicit instructions. The information indicated by a certain piece of information (hereinafter referred to as instruction information) is called the information to be instructed. In specific implementation, there are many ways to indicate the information to be instructed, such as, but not limited to, directly indicating the information to be instructed, such as the information to be instructed itself or its index. It can also indirectly indicate the information to be instructed by indicating other information, where there is an association between the other information and the information to be instructed; or it can only indicate a part of the information to be instructed, while the other parts are known or pre-agreed upon. For example, the instruction can be implemented by using a pre-agreed (e.g., protocol predefined) arrangement of various information, thereby reducing the instruction overhead to a certain extent. This application does not limit the specific method of instruction. It is understood that for the sending end of the instruction information, the instruction information can be used to indicate the information to be instructed; for the receiving end of the instruction information, the instruction information can be used to determine the information to be instructed.

[0198] In this application, unless otherwise specified, the same or similar parts between the various embodiments can be referred to each other. In the various embodiments of this application, and in the various implementation methods / methods / implementations within each embodiment, unless otherwise specified or logically conflicting, the terminology and / or descriptions between different embodiments and between the various implementation methods / methods / implementations within each embodiment are consistent and can be mutually referenced. The technical features in different embodiments and the various implementation methods / methods / implementations within each embodiment can be combined according to their inherent logical relationships to form new embodiments, implementation methods, methods, or implementation approaches. The embodiments described below do not constitute a limitation on the scope of protection of this application.

[0199] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0200] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0201] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0202] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0203] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0204] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0205] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for information transmission, characterized in that, The method, applied to a first communication device in a Radio Resource Control (RRC) connected state, includes: Detect the first information at the first transmission opportunity within the first public search space; During a second transmission opportunity within a dedicated search space, downlink control information is detected. This downlink control information is used to indicate the resources of the data channel or to indicate the re-initiation of random access. The time domain resources of the second transmission opportunity do not overlap with those of the first transmission opportunity.

2. The method according to claim 1, characterized in that, Also includes: Receive second information, the second information being used to indicate the association between the first transmission timing and the paging timing in the first public search space, the paging timing in the first public search space including the first transmission timing.

3. The method according to claim 2, characterized in that, The second information indicates the number of first transmission opportunities included in a paging cycle corresponding to the first communication device within the first public search space.

4. The method according to claim 3, characterized in that, The number of first transmission opportunities included in a paging cycle corresponding to the first communication device within the first public search space is 4, 2, 1, 1 / 2, or 1 / 4.

5. The method according to any one of claims 1 to 4, characterized in that, Also includes: If the time-domain resources of the third transmission opportunity within the dedicated search space overlap with the time-domain resources of the first transmission opportunity, the downlink control information is not detected in the third transmission opportunity.

6. The method according to any one of claims 1 to 5, characterized in that, The first information includes at least one of public alert information, earthquake and tsunami warning information, or commercial mobile alert information.

7. The method according to any one of claims 1 to 6, characterized in that, Also includes: Send first capability information, which indicates that the first communication device has the ability to detect the first public search space and the dedicated search space.

8. A method for information transmission, characterized in that, Applied to a second communication device, the method includes: At a first transmission opportunity within the first public search space, first information is sent to a first communication device, wherein the first communication device is a communication device in an RRC connection state; During a second transmission opportunity within the dedicated search space, downlink control information is sent to the first communication device. The downlink control information is used to indicate the resources of the data channel or to indicate the re-initiation of random access. The time domain resources of the second transmission opportunity do not overlap with those of the first transmission opportunity.

9. The method according to claim 8, characterized in that, Also includes: Send a second message to the first communication device, the second message indicating the association between the first transmission timing and the paging timing in the first public search space, the paging timing in the first public search space including the first transmission timing.

10. The method according to claim 9, characterized in that, The second information indicates the number of first transmission opportunities included in a paging cycle corresponding to the first communication device within the first public search space.

11. The method according to claim 10, characterized in that, The number of first transmission opportunities included in a paging cycle corresponding to the first communication device within the first public search space is 4, 2, 1, 1 / 2, or 1 / 4.

12. The method according to any one of claims 8 to 11, characterized in that, Also includes: If the time-domain resources of the third transmission opportunity within the dedicated search space overlap with the time-domain resources of the first transmission opportunity, the downlink control information is not transmitted during the third transmission opportunity.

13. The method according to any one of claims 8 to 12, characterized in that, The first information includes at least one of public alert information, earthquake and tsunami warning information, or commercial mobile alert information.

14. The method according to any one of claims 8 to 13, characterized in that, Also includes: The first capability information received from the first communication device indicates that the first communication device has the ability to detect the first public search space and the dedicated search space.

15. A method for transmitting information, characterized in that, The method, applied to a first communication device in an RRC connected state, includes: Receive configuration information for the dedicated search space; Based on the transmission timing within the dedicated search space, first information is detected, the first information including at least one of public alarm information, earthquake and tsunami alarm information, or commercial mobile alarm information.

16. The method according to claim 15, characterized in that, The step of detecting the first information based on the transmission timing within the dedicated search space includes: During the transmission timing within the dedicated search space, downlink control information is detected; The first information is detected on the downlink data channel scheduled by the downlink control information.

17. The method according to claim 16, characterized in that, The Media Access Control (MAC) CE carried by the downlink data channel includes the first information.

18. The method according to claim 15, characterized in that, The step of detecting the first information based on the transmission timing within the dedicated search space includes: The first information is detected during the transmission timing within the dedicated search space.

19. The method according to any one of claims 15 to 18, characterized in that, Also includes: Send a second capability information, which indicates that the first communication device has the capability to detect the first information based on the dedicated search space.

20. A method for transmitting information, characterized in that, Applied to a second communication device, the method includes: Send configuration information of the dedicated search space to the first communication device, which is a communication device in RRC connection state; Based on the transmission timing within the dedicated search space, a first message is sent to the first communication device, the first message including at least one of public alarm information, earthquake and tsunami alarm information, or commercial mobile alarm information.

21. The method according to claim 20, characterized in that, Sending first information to the first communication device according to the transmission timing within the dedicated search space includes: During the transmission timing within the dedicated search space, downlink control information is sent to the first communication device; The first information is sent to the first communication device on the downlink data channel scheduled by the downlink control information.

22. The method according to claim 21, characterized in that, The MAC CE carried by the downlink data channel includes the first information.

23. The method according to claim 20, characterized in that, Sending first information to the first communication device according to the transmission timing within the dedicated search space includes: During the transmission timing within the dedicated search space, the first information is sent to the first communication device.

24. The method according to any one of claims 20 to 23, characterized in that, Also includes: The first communication device receives second capability information, which indicates that the first communication device has the capability to detect the first information based on the dedicated search space.

25. A communication device, characterized in that, Includes modules for performing the method as described in any one of claims 1 to 24.

26. A communication device, characterized in that, Includes a processor for implementing the method as described in any one of claims 1 to 24.

27. A communication system, characterized in that, include: A first communication device and a second communication device, wherein the first communication device is used to implement the method of any one of claims 1 to 7, and the second communication device is used to implement the method of any one of claims 8 to 14; or, the first communication device is used to implement the method of any one of claims 15 to 19, and the second communication device is used to implement the method of any one of claims 20 to 24.

28. A computer-readable storage medium, characterized in that, include: The computer-readable medium stores a computer program; When the computer program is run by the processor, the method of any one of claims 1 to 24 is performed.

29. A computer program product, characterized in that, Includes a computer program, which, when executed, causes the method as described in any one of claims 1 to 24 to be performed.

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