Method for Detecting Control Information, Method for Transmitting Control Information, Terminal Device, and Network Device

Abstract

The present application relates to a method for detecting control information, a method for transmitting control information, a terminal device, and a network device. The method for detecting control information includes: the terminal device receives configuration information, and determines a first control resource within a first carrier and a second control resource within a second carrier according to the configuration information, where the first control resource and the second control resource are used for transmitting control information, and the control information is used for scheduling a physical channel; if there is an overlap between the first control resource and the second control resource, the terminal device detects the control information within one of the first control resource and the second control resource. Using the embodiments of the present application can avoid repeated detection by the terminal.

Description

Background Art

[0002] In the fifth-generation mobile communication 5G new air interface NR system, in order to improve resource utilization, the physical downlink control channel (Physical Downlink Control Channel, PDCCH) no longer occupies the entire bandwidth in the frequency domain, and the starting position of the PDCCH in the time domain can also be configured. The NR system encapsulates the frequency domain resource information of the PDCCH and the number of symbols occupied in the time domain in the control resource set (control-resource set, CORESET), and encapsulates the PDCCH starting symbol number and PDCCH monitoring period in the search space (Search Space). The search space includes the common search space (CSS) and the terminal specific search space (USS). The CSS is used to transmit cell-level public information, such as control information related to the broadcast control channel (BCCH), paging, random access response (RAR), etc. The USS is used to transmit terminal UE-level information, such as control information related to the downlink shared channel (DL-SCH) and uplink shared channel (UL-SCH).

[0003] In a multi-carrier scenario, the terminal performs PDCCH detection in the search space of the carrier corresponding to the primary cell (pcell). The detected PDCCH can schedule resources on the carrier corresponding to the pcell, and can also schedule resources on the carrier corresponding to the secondary cell (scell). However, the PDCCH detected in the search space of the carrier corresponding to the secondary cell (scell) cannot schedule resources on the carrier corresponding to the primary cell pcell, and the scheduling method is not flexible enough. Summary of the Invention

[0004] In view of this, embodiments of the present application provide a method for detecting control information, a method for transmitting control information, a terminal device, and a network device.

[0005] The present invention provides a method for detecting control information, which is applied to a terminal device and includes:

[0006] The terminal device receives configuration information and determines a first control resource within a first carrier and a second control resource within a second carrier according to the configuration information, where the first control resource and the second control resource are used to transmit first control information, and the first control information is used to schedule a first physical channel; if there is an overlap between the first control resource and the second control resource, the terminal device detects downlink control information DCI within one of the first control resource and the second control resource.

[0007] An embodiment of the present application provides a method for transmitting control information, which is applied to a network device and includes:

[0008] The network device sends configuration information to the terminal device, where the configuration information is used for the terminal device to determine a first control resource within a first carrier and a second control resource within a second carrier according to the configuration information, where the first control resource and the second control resource are used to transmit first control information, and the first control information is used to schedule a first physical channel; if there is an overlap between the first control resource and the second control resource, the network device transmits downlink control information DCI within one of the first control resource and the second control resource.

[0009] An embodiment of the present application further provides a terminal device, including:

[0010] A receiving module, configured to receive configuration information, where the configuration information is used for the terminal device to determine a first control resource within a first carrier and a second control resource within a second carrier, where the first control resource and the second control resource are used to transmit control information, and the control information is used to schedule a physical channel;

[0011] A detecting module, configured to detect control information within one of the first control resource and the second control resource when there is an overlap between the first control resource and the second control resource.

[0012] An embodiment of the present application further provides a network device, including:

[0013] A sending module, configured to send configuration information to the terminal device, where the configuration information is used for the terminal device to determine a first control resource within a first carrier and a second control resource within a second carrier according to the configuration information, where the first control resource and the second control resource are used to transmit control information, and the control information is used to schedule a physical channel;

[0014] A transmitting module, configured to transmit control information within one of the first control resource and the second control resource when there is an overlap between the first control resource and the second control resource.

[0015] An embodiment of the present application further provides a terminal device, comprising: a processor and a memory, wherein the memory is used to store a computer program, and the processor calls and runs the computer program stored in the memory to execute the method described above.

[0016] An embodiment of the present application further provides a network device, comprising: a processor and a memory, wherein the memory is used to store a computer program, and the processor calls and runs the computer program stored in the memory to execute the method described above.

[0017] An embodiment of the present application further provides a chip, comprising: a processor, configured to call and execute a computer program from a memory, so that a device equipped with the chip executes the method described above.

[0018] An embodiment of the present application further provides a computer-readable storage medium for storing a computer program, wherein the computer program enables a computer to execute the method described above.

[0019] An embodiment of the present application further provides a computer program product, comprising computer program instructions, wherein the computer program instructions enable a computer to execute the method described above.

[0020] An embodiment of the present application also provides a computer program, which enables a computer to execute the above method.

[0021] Using the embodiments of the present application, for the first control resource within the first carrier and the second control resource within the second carrier, if the first control resource and the second control resource overlap, the terminal device will detect the downlink control information in one of the first control resource and the second control resource, thereby avoiding repeated detection and achieving the purpose of reducing the number of detections and shortening the detection time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the communication system architecture of an embodiment of the present application.

[0023] Figure 2 It is a flowchart of a method for detecting control information of a terminal device in an embodiment of the present application.

[0024] Figure 3 It is a flowchart of a method for transmitting control information of a network device in an embodiment of the present application.

[0025] Figures 4A-4C This is a schematic diagram showing the effect of non-overlapping search spaces of the primary carrier and the secondary carrier.

[0026] Figures 5A-5C This is a schematic diagram showing the effect of overlapping search spaces of the primary carrier and the secondary carrier.

[0027] Figure 6-11 It is a schematic diagram of the terminal detection method when there is an overlap in the search spaces of multiple carriers in the embodiments of the present application.

[0028] Figure 12 It is a schematic structural block diagram of a terminal device in the embodiments of the present application.

[0029] Figure 13 It is a schematic structural block diagram of a network device in the embodiments of the present application.

[0030] Figure 14 It is a schematic block diagram of a communication device in the embodiments of the present application.

[0031] Figure 15 It is a schematic block diagram of a chip in the embodiments of the present application.

[0032] Fig.16 It is a schematic block diagram of a communication system in the embodiments of the present application. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present application will be described with reference to the accompanying drawings in the embodiments of the present application.

[0034] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system, New Radio (NR) system, NR system evolution system, LTE on unlicensed spectrum (LTE-U) system, NR on unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (Wireless Fidelity) system. Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.

[0035] Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communications, but will also support, for example, device-to-device (D2D) communication, machine-to-machine (M2M) communication, machine-type communication (MTC), vehicle-to-vehicle (V2V) communication, or vehicle-to-everything (V2X) communication, etc. The embodiments of the present application can also be applied to these communication systems.

[0036] Optionally, the communication system in the embodiment of the present application can be applied to a carrier aggregation (CA) scenario, a dual connectivity (DC) scenario, or a standalone (SA) networking scenario.

[0037] The embodiments of the present application describe various embodiments in conjunction with network devices and terminal devices, wherein the terminal device may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.

[0038] The terminal device can be a station (STAION, ST) in a WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) device, a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a next-generation communication system such as an NR network, or a terminal device in a future evolved Public Land Mobile Network (PLMN) network, etc.

[0039] In the embodiments of the present application, the terminal device can be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted; it can also be deployed on the water surface (such as ships, etc.); it can also be deployed in the air (for example, on airplanes, balloons and satellites, etc.).

[0040] In the embodiments of the present application, the terminal device may be a mobile phone, a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical, a wireless terminal device in smart grid, a wireless terminal device in transportation safety, a wireless terminal device in smart city or a wireless terminal device in smart home, etc.

[0041] By way of example and not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. A wearable device, also known as a wearable intelligent device, is a general term for devices developed by applying wearable technology to intelligently design daily wearables, such as glasses, gloves, watches, clothing, shoes, etc. A wearable device is a portable device that can be directly worn on the body or integrated into the user's clothes or accessories. A wearable device is not just a hardware device, but also realizes powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable intelligent devices include those with complete functions and large sizes that can achieve complete or partial functions without relying on a smart phone, such as smart watches or smart glasses, etc., and those that only focus on a certain type of application function and need to cooperate with other devices such as smart phones, such as various smart bracelets and smart jewelry for physical sign monitoring.

[0042] In the embodiments of the present application, the network device may be a device used to communicate with a mobile device. The network device may be an access point (AP) in a WLAN, a base transceiver station (BTS) in GSM or CDMA, or a base station (NodeB, NB) in WCDMA. It may also be an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and a network device (gNB) in an NR network or a network device in a future evolved PLMN network, etc.

[0043] By way of example and not limitation, in the embodiments of the present application, the network device may have mobility characteristics. For example, the network device may be a mobile device. Optionally, the network device may be a satellite or a balloon station. For example, the satellite may be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a high elliptical orbit (HEO) satellite, etc. Optionally, the network device may also be a base station located on land, water, etc.

[0044] In the embodiments of the present application, the network device may provide services for a cell, and the terminal device communicates with the network device through the transmission resources used by the cell (for example, frequency domain resources, or in other words, spectrum resources). The cell may be the cell corresponding to the network device (such as a base station). The cell may belong to a macro base station or a base station corresponding to a small cell. Here, the small cell may include: metro cell, micro cell, pico cell, femto cell, etc. These small cells have the characteristics of small coverage range and low transmission power, and are suitable for providing high-rate data transmission services.

[0045] Figure 1 Schematically shows a network device 1100 and two terminal devices 1200. Optionally, the wireless communication system 1000 may include multiple network devices 1100, and the coverage range of each network device 1100 may include other numbers of terminal devices. The embodiments of the present application do not limit this. Optionally, Figure 1 The shown wireless communication system 1000 may also include other network entities such as a Mobility Management Entity (MME) and an Access and Mobility Management Function (AMF). The embodiments of the present application do not limit this.

[0046] It should be understood that the terms "system" and "network" are often used interchangeably in this article. The term "and / or" in this article is used to describe the association relationship of associated objects. For example, it means that there may be three relationships between the front and rear associated objects. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. In this article, the character " / " generally represents an "or" relationship between the front and rear associated objects.

[0047] In the description of the embodiments of the present application, the term "corresponding" may indicate a direct or indirect corresponding relationship between two entities, may also indicate an association relationship between two entities, or may be a relationship such as indication and being indicated, configuration and being configured, etc.

[0048] In a multi-carrier scenario, currently, the UE performs PDCCH detection in the search space of the primary carrier. The detected PDCCH can schedule resources on the primary carrier or on the secondary carrier, but the PDCCH detected in the search space of the secondary carrier cannot schedule resources on the primary carrier.

[0049] Here, if it is assumed that it is allowed to use the PDCCH on the secondary carrier to schedule resources on the primary carrier, or in other words, it is allowed to configure search spaces on both the primary carrier and the secondary carrier, it is found through research that the following situation may occur in practice: there are search spaces on both the primary carrier and the secondary carrier at the same time. In other words, the search spaces of the primary carrier and the secondary carrier may overlap in time.

[0050] For the situation where search spaces can be configured on both the above-mentioned primary carrier and secondary carrier, if the UE performs PDCCH detection in the search spaces of both the primary carrier and the secondary carrier, the detection complexity will increase significantly, and the detection time will also be extended significantly. In addition, one search space corresponds to one CORESET. Therefore, the above problems regarding the search space also exist in the configuration and use process of the CORESET. How to optimize the above situation and improve the PDCCH detection mechanism is one of the problems to be solved by the embodiments of the present application.

[0051] To this end, the embodiments of the present application provide a method for detecting control information, which is applied to a terminal device. Refer to Figure 2 , the method includes:

[0052] S101, the terminal device receives configuration information, and determines a first control resource in a first carrier and a second control resource in a second carrier according to the configuration information, where the first control resource and the second control resource are used to transmit control information, and the control information is used to schedule physical channels;

[0053] S102, if there is an overlap between the first control resource and the second control resource, the terminal device detects control information in one of the first control resource and the second control resource.

[0054] In the embodiments of the present application, optionally, the first carrier and the second carrier can be used to transmit data simultaneously, the terminal device can receive data on the first carrier and the second carrier simultaneously, and the first carrier and the second carrier can be used for carrier aggregation. In other words, the first carrier and the second carrier are member carriers for carrier aggregation.

[0055] Optionally, the first carrier and the second carrier may be the primary carrier and the secondary carrier in carrier aggregation respectively, or both may be secondary carriers.

[0056] Optionally, the control resource may be a search space or a CORESET.

[0057] Optionally, the control information includes Downlink Control Information (DCI); the physical channel includes Physical Downlink Shared Channel (PDSCH).

[0058] Using the embodiments of the present application, for the first control resource in the first carrier and the second control resource in the second carrier, if the first control resource and the second control resource overlap, the terminal device will detect the downlink control information in one of the first control resource and the second control resource, which can avoid repeated detection, achieve the purpose of reducing the number of detections and shortening the detection time.

[0059] Correspondingly, the embodiments of the present application provide a method for transmitting control information, which is applied to a network device. Refer to Figure 3 , and the method includes:

[0060] S201. The network device sends configuration information to the terminal device, and the configuration information is used for the terminal device to determine a first control resource in the first carrier and a second control resource in the second carrier according to the configuration information, where the first control resource and the second control resource are used for transmitting control information, and the control information is used for scheduling a physical channel;

[0061] S202. If there is an overlap between the first control resource and the second control resource, the network device transmits control information in one of the first control resource and the second control resource.

[0062] Using the embodiments of the present application, for the first control resource in the first carrier and the second control resource in the second carrier, if the first control resource and the second control resource overlap, the network device will transmit downlink control information in one of the first control resource and the second control resource, which can avoid repeated transmission and reduce the scheduling complexity on the network side.

[0063] The following describes in detail various implementation manners of the method for detecting control information on the terminal side and the method for transmitting control information on the network side provided by the embodiments of the present application through multiple embodiments on the terminal side and the network side.

[0064] In an embodiment of the present application, optionally, the common search space of the terminal device is only configured within the first carrier.

[0065] Optionally, the first carrier and the second carrier may be the primary carrier and the secondary carrier in carrier aggregation respectively, or both may be secondary carriers.

[0066] As an example, the first carrier is the primary carrier and the second carrier is the secondary carrier.

[0067] As an example, the first carrier is the secondary carrier and the second carrier is the secondary carrier.

[0068] Optionally, if the first control resource is a common search space, the terminal device detects control information within the first control resource; or,

[0069] If the first carrier includes a common search space within the first time unit, the terminal device detects control information within the first control resource, where the first time unit includes the first control resource, and the first time unit is a time slot or a time period.

[0070] The time period may be, for example, a PDCCH monitoring span.

[0071] If the first control resource includes a common search space, the terminal device detects control information within the search space corresponding to the CORESET associated with the common search space; or,

[0072] If the first control resource includes a common search space, the terminal device detects control information within the search space corresponding to the CORESET associated with the common search space, where the first time unit includes the first control resource.

[0073] As an example, when the first carrier is the primary carrier and the second carrier is the secondary carrier, at least one of the above embodiments can save the control information / channel overhead on the primary carrier.

[0074] Correspondingly, optionally, if the first control resource is a common search space, the network device transmits control information within the first control resource; or,

[0075] Optionally, if the first carrier includes a common search space within the first time unit, the network device transmits control information within the first control resource, where the first time unit includes the first control resource, and the first time unit is a time slot or a time period.

[0076] Optionally, if the first control resource includes a common search space, the network device transmits control information in a search space corresponding to a CORESET associated with the common search space; or,

[0077] Optionally, if the first control resource includes a common search space, the network device transmits control information in a search space corresponding to a CORESET associated with the common search space, wherein the first time unit includes the first control resource.

[0078] In an embodiment of the present application, optionally, if both the first control resource and the second control resource are common search spaces, the terminal device detects control information in the first control resource; or,

[0079] Optionally, if the first control resource and the second control resource are both terminal device-specific search spaces, the terminal device detects control information in the second control resource, and the second carrier is a carrier corresponding to the secondary cell; or,

[0080] Optionally, if the first control resource and the second control resource are both terminal device-specific search spaces, the terminal device determines one of the first control resource and the second control resource to detect control information based on the indication information sent by the network device or the configuration parameters of the control resource.

[0081] Correspondingly, optionally, if both the first control resource and the second control resource are common search spaces, the network device transmits control information within the first control resource; or,

[0082] Optionally, if the first control resource and the second control resource are both terminal device-specific search spaces, the network device transmits control information in the second control resource, and the second carrier is a carrier corresponding to the secondary cell; or,

[0083] Optionally, if the first control resource and the second control resource are both terminal device-specific search spaces, the network device transmits control information in one of the first control resource and the second control resource; the network device also sends indication information or configuration parameters of the control resource to the terminal device, so that the terminal device determines one of the first control resource and the second control resource to detect control information based on the indication information or the configuration parameters of the control resource.

[0084] In an embodiment of the present application, optionally, if the first control resource is a control resource including a common search space within a first carrier, and the second control resource is a control resource including a common search space within a second carrier, then the terminal device detects control information in a search space corresponding to a CORESET associated with the common search space of the first control resource; or,

[0085] Optionally, if the first control resource is a control resource of a first carrier containing a terminal device-specific search space, and the second control resource is a control resource of a second carrier containing a terminal device-specific search space, then the terminal device detects control information in the search space corresponding to the CORESET associated with the exclusive search space of the second control resource, and the second carrier is a carrier corresponding to the secondary cell; or,

[0086] Optionally, if the first control resource is a control resource containing a terminal device-specific search space within a first carrier, and the second control resource is a control resource containing a terminal device-specific search space within a second carrier, the terminal device determines to detect control information within the search space corresponding to the CORESET associated with the exclusive search space of one of the first control resource and the second control resource based on the indication information sent by the network device or the configuration parameters of the control resource.

[0087] Correspondingly, optionally, if the first control resource is a control resource including a common search space in the first carrier, and the second control resource is a control resource including a common search space in the second carrier, the network device transmits control information in a search space corresponding to a CORESET associated with the common search space of the first control resource;

[0088] Optionally, if the first control resource is a control resource of a first carrier including a terminal device-specific search space, and the second control resource is a control resource of a second carrier including a terminal device-specific search space, then the network device transmits control information in the search space corresponding to the CORESET associated with the exclusive search space of the second control resource, and the second carrier is a carrier corresponding to the secondary cell;

[0089] Optionally, if the first control resource is a control resource including a dedicated search space of a terminal device within a first carrier, and the second control resource is a control resource including a dedicated search space of the terminal device within a second carrier, the network device transmits control information within a search space corresponding to a CORESET associated with the dedicated search space of one of the first control resource and the second control resource; the network device further sends indication information or configuration parameters of the control resource to the terminal device, for the terminal device to determine, according to the indication information or the configuration parameters of the control resource, to detect control information within a search space corresponding to a CORESET associated with the dedicated search space of one of the first control resource and the second control resource.

[0090] In an embodiment of the present application, optionally, the first carrier is at least one of the following: a carrier corresponding to a primary cell (PCell), a carrier corresponding to a special cell (sPCell), and a carrier corresponding to a physical uplink control channel secondary cell (PUCCH-SCell).

[0091] In an embodiment of the present application, optionally, the configuration parameters of the control resource include at least one of the following: a search space type configuration parameter, a DCI format configuration parameter, and a DCI format aggregation level configuration parameter.

[0092] Optionally, when at least one of the following conditions is met, the terminal device detects control information DCI within the first control resource, and the network device transmits DCI within the first control resource:

[0093] a) The number of DCI format configurations corresponding to the first control resource is greater than the number of DCI format configurations corresponding to the second control resource;

[0094] b) The number of search space type configurations corresponding to the first control resource is greater than the number of search space type configurations corresponding to the second control resource;

[0095] c) The number of DCI format aggregation level configurations corresponding to the first control resource is greater than the number of DCI format aggregation level configurations corresponding to the second control resource.

[0096] In an embodiment of the present application, the terminal device does not expect an overlap between the control resources of the primary carrier and the control resources of the secondary carrier. If an overlap occurs, at least one of the above-described embodiments can be used for processing, which can prevent the terminal device from detecting on the control resources of multiple carriers, avoid repeated detection, shorten the detection time, and reduce the scheduling complexity on the network side.

[0097] The following uses multiple examples to compare and illustrate the processing methods that can be adopted by the terminal device and the network device of the present application in different situations.

[0098] In applications, network devices can transmit the PDCCH used to schedule the primary carrier through the search space configured on the primary carrier, where DCI is carried and transmitted via the PDCCH. Network devices can also transmit the PDCCH used to schedule the primary carrier through the search space configured on the secondary carrier. Correspondingly, the terminal device can schedule the primary carrier through the PDCCH detected in the search space of the primary carrier, or through the PDCCH detected in the search space of the secondary carrier.

[0099] The network device configures the search spaces for the primary and secondary carriers to avoid temporal overlap. When transmitting the PDCCH for scheduling the primary carrier, the network device may select the currently available or most recently available search space. Correspondingly, the terminal device does not expect the search spaces configured for the primary and secondary carriers to overlap in time.

[0100] Figure 4A , 4B 4C schematically illustrate various situations in which the search spaces of the primary carrier and the secondary carrier configured by the network do not overlap in time. The terminal device can detect in both search spaces without repeated searches.

[0101] In comparison, Figure 5A , 5B Figures 5 and 5C schematically illustrate various situations where the search spaces of the primary carrier and the secondary carrier configured by the network overlap in time. In these situations, if detection is performed in each search space, repeated searches and high search complexity will occur. Figures 4A-4C as well as Figures 5A-5C In FIG, the white square represents the search space of the first carrier, and the white square represents the search space of the second carrier.

[0102] Exemplarily, according to the solution provided in the embodiments of the present application, at least one of the following processing methods can be adopted. In the various figures mentioned below, a cross indicates that the search space is skipped, that is, the terminal does not detect in the search space, and no cross indicates that the terminal detects DCI in the search space.

[0103] ①Reference Figure 6 If there are overlapping search spaces, namely the common search space of the first carrier and the terminal-specific search space of the second carrier, the terminal detects DCI in the common search space of the first carrier.

[0104] ②Reference Figure 7 If there is a common search space of the first carrier in time unit 1, and the search space on the first carrier in time unit 1 overlaps with the terminal-specific search space of the second carrier in time, DCI is detected in the search space of the first carrier.

[0105] ③Reference Figure 8 If there are overlapping search spaces, namely the common search space of the first carrier and the common search space of the second carrier, the first carrier is the carrier corresponding to the primary cell, and the second carrier is the carrier corresponding to the secondary cell, the terminal detects DCI in the common search space of the first carrier.

[0106] ④Reference Figure 9 If there are overlapping search spaces, which are the terminal-specific search space of the first carrier and the terminal-specific search space of the second carrier, the first carrier is the carrier corresponding to the primary cell, and the second carrier is the carrier corresponding to the secondary cell, then the terminal detects DCI in the terminal-specific search space of the second carrier.

[0107] ⑤Reference Figure 10 If there are overlapping search spaces, namely the terminal-specific search space of the first carrier and the terminal-specific search space of the second carrier, when the network configures the search space to overlap, the search space of the first carrier is used to detect DCI, and the terminal detects DCI in the terminal-specific search space of the first carrier.

[0108] ⑥Reference Figure 11 If there are overlapping search spaces, which are the terminal-specific search space of the first carrier and the terminal-specific search space of the second carrier, when the network configures the search space, the first carrier has a larger number of search space type configurations, or a larger number of DCI format configurations, or a larger number of aggregation level configurations of the DCI format, then the terminal detects DCI in the terminal-specific search space of the first carrier.

[0109] It can be seen that using the embodiments of the present application, if the search space overlaps, at least one of the embodiments described above can be used to handle it, which can avoid repeated detection, shorten the detection time, and reduce the complexity of network-side scheduling.

[0110] The above describes the specific configuration and implementation of the embodiment of the present application from different perspectives through multiple embodiments. Corresponding to the processing method of at least one of the above embodiments, the embodiment of the present application also provides a terminal device 100, referring to Figure 12 , which includes:

[0111] A receiving module 110 is configured to receive configuration information, where the configuration information is used by the terminal device to determine a first control resource within a first carrier and a second control resource within a second carrier, where the first control resource and the second control resource are used to transmit control information, where the control information is used to schedule a physical channel;

[0112] The detection module 120 is configured to detect control information in one of the first control resource and the second control resource when there is overlap between the first control resource and the second control resource.

[0113] Corresponding to the processing method of at least one of the above embodiments, the embodiment of the present application further provides a network device 200, referring to Figure 13 , which includes:

[0114] a sending module 210, configured to send configuration information to a terminal device, wherein the configuration information is used by the terminal device to determine, according to the configuration information, a first control resource within a first carrier and a second control resource within a second carrier, wherein the first control resource and the second control resource are used to transmit control information, and the control information is used to schedule a physical channel;

[0115] The transmission module 220 is configured to transmit control information in one of the first control resource and the second control resource when there is overlap between the first control resource and the second control resource.

[0116] The terminal device 100 and the network device 200 in the embodiment of the present application can implement the corresponding functions of the terminal device in the aforementioned method embodiment. The corresponding processes, functions, implementation methods and beneficial effects of each module (sub-module, unit or component, etc.) in the terminal device 100 and the network device 200 can be found in the corresponding description in the aforementioned method embodiment and will not be repeated here.

[0117] It should be noted that the functions described in the various modules (sub-modules, units or components, etc.) in the terminal device 100 and the network device 200 of the embodiment of the present application can be implemented by different modules (sub-modules, units or components, etc.) or by the same module (sub-modules, units or components, etc.). For example, the first sending module and the second sending module can be different modules or the same module, and both can implement the corresponding functions of the terminal device of the embodiment of the present application.

[0118] Figure 14 6 is a schematic structural diagram of a communication device 600 according to an embodiment of the present application, wherein the communication device 600 includes a processor 610, and the processor 610 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0119] Optionally, the communication device 600 may further include a memory 620. The processor 610 may call and run a computer program from the memory 620 to implement the method in the embodiment of the present application.

[0120] The memory 620 may be a separate device independent of the processor 610 , or may be integrated into the processor 610 .

[0121] Optionally, the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices, specifically, may send information or data to other devices, or receive information or data sent by other devices.

[0122] The transceiver 630 may include a transmitter and a receiver. The transceiver 630 may further include an antenna, and the number of the antennas may be one or more.

[0123] Optionally, the communication device 600 may be a network device in an embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the network device in each method in the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0124] Optionally, the communication device 600 may be a terminal device of an embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the terminal device in each method of the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0125] Figure 15 7 is a schematic structural diagram of a chip 700 according to an embodiment of the present application, wherein the chip 700 includes a processor 710, and the processor 710 can call and run a computer program from a memory to implement the method of the embodiment of the present application.

[0126] Optionally, the chip 700 may further include a memory 720. The processor 710 may call and execute a computer program from the memory 720 to implement the method in the embodiment of the present application.

[0127] The memory 720 may be a separate device independent of the processor 710 , or may be integrated into the processor 710 .

[0128] Optionally, the chip 700 may further include an input interface 730. The processor 710 may control the input interface 730 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

[0129] Optionally, the chip 700 may further include an output interface 740. The processor 710 may control the output interface 740 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0130] Optionally, the chip can be applied to the network device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, details are not described herein again.

[0131] Optionally, the chip can be applied to the terminal device in the embodiments of the present application as Figure 12 described, and the chip can implement the corresponding processes implemented by the terminal device in the various methods of the embodiments of the present application. For the sake of brevity, details are not described herein again.

[0132] It should be understood that the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, system chip, chip system, or system-on-chip, etc.

[0133] The aforementioned processor may be a general-purpose processor, a digital signal processor (DSP), a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), or other programmable logic devices, transistor logic devices, discrete hardware components, etc. Among them, the aforementioned general-purpose processor may be a microprocessor or any conventional processor, etc.

[0134] The aforementioned memory may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable ROM (PROM), an erasable PROM (EPROM), an electrically erasable PROM (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM).

[0135] It should be understood that the above-mentioned memory is for illustrative but not restrictive purposes. For example, the memory in the embodiments of the present application may also be a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDR SDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synch link dynamic random access memory (SLDRAM), and a direct rambus random access memory (DR RAM), etc. That is to say, the memory in the embodiments of the present application is intended to include but not be limited to these and any other suitable types of memory.

[0136] Fig.16 FIG. 4 is a schematic block diagram of a communication system 800 according to an embodiment of the present application. The communication system 800 includes a terminal device 810 and a network device 820.

[0137] Among them, the terminal device 810 can be used to implement the corresponding functions realized by the terminal device in the methods of the embodiments of the present application, and the network device 820 can be used to implement the corresponding functions realized by the network device in the methods of the embodiments of the present application. For the sake of brevity, details are not described herein again.

[0138] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When software is used for implementation, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instruction is loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network or other programmable devices. The computer instruction can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instruction can be transmitted from a website, computer, server or data center by wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) mode to another website, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrations. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (eg, a solid state disk (SSD)).

[0139] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0140] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described systems, devices and units can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0141] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A method for detecting control information, applied to a terminal device, the method comprising: The terminal device receives configuration information, and determines a first control resource within a first carrier and a second control resource within a second carrier according to the configuration information, where the first control resource and the second control resource are used to transmit control information, and the control information is used to schedule a physical channel; If there is a time overlap between the first control resource and the second control resource, the terminal device detects control information within one of the first control resource and the second control resource. Specifically, if the terminal-exclusive search spaces of the first carrier and the second carrier overlap, the terminal device determines to detect control information within one of the first control resource and the second control resource according to the indication information sent by the network device or the configuration parameters of the control resource. When the following conditions are met, the terminal device detects control information within the first control resource: the number of DCI format configurations corresponding to the first control resource is greater than the number of DCI format configurations corresponding to the second control resource; the number of search space type configurations corresponding to the first control resource is greater than the number of search space type configurations corresponding to the second control resource; and the number of aggregation level configurations of the DCI format corresponding to the first control resource is greater than the number of aggregation level configurations of the DCI format corresponding to the second control resource.

2. The method according to claim 1, wherein, The first carrier and the second carrier are member carriers for carrier aggregation, and the first carrier and the second carrier can be used to transmit data simultaneously.

3. The method according to claim 1 or 2, where the terminal device detecting control information within one of the first control resource and the second control resource includes: If the first control resource includes a common search space, the terminal device detects control information within the search space corresponding to the CORESET associated with the common search space.

4. The method according to claim 3, where The common search space of the terminal device is only configured within the first carrier.

5. The method according to claim 2, where the terminal device detecting control information within one of the first control resource and the second control resource includes: If both the first control resource and the second control resource are common search spaces, the terminal device detects control information within the first control resource; Or, If both the first control resource and the second control resource are terminal device-exclusive search spaces, the terminal device detects control information within the second control resource, and the second carrier is the carrier corresponding to the secondary cell.

6. The method according to claim 2, where the terminal device detecting control information within one of the first control resource and the second control resource includes: If the first control resource is a control resource including a common search space within a first carrier, and the second control resource is a control resource including a common search space within a second carrier, the terminal device detects control information in a search space corresponding to a CORESET associated with the common search space of the first control resource; or, if the first control resource is a control resource including a dedicated search space of the terminal device within a first carrier, and the second control resource is a control resource including a dedicated search space of the terminal device within a second carrier, the terminal device detects control information in a search space corresponding to a CORESET associated with the dedicated search space of the second control resource, and the second carrier is a carrier corresponding to a secondary cell; or, If the first control resource is a control resource including a dedicated search space of the terminal device within a first carrier, and the second control resource is a control resource including a dedicated search space of the terminal device within a second carrier, the terminal device determines, according to indication information sent by a network device or configuration parameters of the control resource, to detect control information in a search space corresponding to a CORESET associated with the dedicated search space of one of the first control resource and the second control resource.

7. The method according to claim 5 or 6, wherein The first carrier is at least one of the following: a carrier corresponding to a primary cell (PCell), a carrier corresponding to a special cell (sPCell), and a carrier corresponding to a physical uplink control channel secondary cell (PUCCH-SCell).

8. The method according to claim 7, wherein The configuration parameters of the control resource include at least one of the following: a search space type configuration parameter, a DCI format configuration parameter, and a DCI format aggregation level configuration parameter.

9. A method for transmitting control information, applied to a network device, the method includes: The network device sends configuration information to the terminal device, where the configuration information is used for the terminal device to determine a first control resource within a first carrier and a second control resource within a second carrier according to the configuration information, where the first control resource and the second control resource are used for transmitting control information, and the control information is used for scheduling a physical channel. If there is a temporal overlap between the first control resource and the second control resource, the network device transmits control information within one of the first control resource and the second control resource. Specifically, if the overlapping ones are the UE-specific search spaces of the first carrier and the second carrier respectively, the network device transmits control information within one of the first control resource and the second control resource. The network device also sends indication information or configuration parameters of the control resource to the UE, for the UE to determine to detect control information within one of the first control resource and the second control resource according to the indication information or the configuration parameters of the control resource. When the following conditions are met, the network device transmits control information within the first control resource: the number of DCI format configurations corresponding to the first control resource is greater than the number of DCI format configurations corresponding to the second control resource; the number of search space type configurations corresponding to the first control resource is greater than the number of search space type configurations corresponding to the second control resource; and, the number of aggregation level configurations of the DCI format corresponding to the first control resource is greater than the number of aggregation level configurations of the DCI format corresponding to the second control resource.

10. The method according to claim 9, wherein, The first carrier and the second carrier are member carriers for carrier aggregation, and the first carrier and the second carrier can be used for simultaneous data transmission.

11. The method according to claim 9 or 10, wherein the network device transmits control information within one of the first control resource and the second control resource, including: If the first control resource includes a common search space, the network device transmits control information within the search space corresponding to the CORESET associated with the common search space.

12. The method according to claim 11, wherein The common search space of the UE is only configured within the first carrier.

13. The method according to claim 10, wherein the network device transmits control information within one of the first control resource and the second control resource, including: If both the first control resource and the second control resource are common search spaces, the network device transmits control information within the first control resource; Or, If both the first control resource and the second control resource are UE-specific search spaces, the network device transmits control information within the second control resource, and the second carrier is the carrier corresponding to the secondary cell.

14. The method according to claim 10, wherein the network device transmits control information within one of the first control resource and the second control resource, including: If the first control resource is a control resource including a common search space within the first carrier, and the second control resource is a control resource including a common search space within the second carrier, then the network device transmits control information within the search space corresponding to the CORESET associated with the common search space of the first control resource; If the first control resource is a control resource including a UE-specific search space in a first carrier, and the second control resource is a control resource including a UE-specific search space in a second carrier, the network device transmits control information in a search space corresponding to a CORESET associated with the UE-specific search space of the second control resource, and the second carrier is a carrier corresponding to a secondary cell. If the first control resource is a control resource including a UE-specific search space in a first carrier, and the second control resource is a control resource including a UE-specific search space in a second carrier, the network device transmits control information in a search space corresponding to a CORESET associated with the UE-specific search space of one of the first control resource and the second control resource; the network device also sends indication information or configuration parameters of the control resource to the UE, for the UE to determine, according to the indication information or the configuration parameters of the control resource, to detect control information in a search space corresponding to a CORESET associated with the UE-specific search space of one of the first control resource and the second control resource.

15. The method according to claim 13 or 14, wherein, The first carrier is at least one of the following: a carrier corresponding to a primary cell (PCell), a carrier corresponding to a special cell (sPCell), and a carrier corresponding to a physical uplink control channel secondary cell (PUCCH-SCell).

16. The method according to claim 15, wherein The configuration parameters of the control resource include at least one of the following: a search space type configuration parameter, a DCI format configuration parameter, and a DCI format aggregation level configuration parameter.

17. A terminal device, comprising: a receiving module, configured to receive configuration information for the terminal device to determine a first control resource in a first carrier and a second control resource in a second carrier, where the first control resource and the second control resource are used to transmit control information for scheduling a physical channel; a detecting module, configured to, when there is a temporal overlap between the first control resource and the second control resource, detect control information in one of the first control resource and the second control resource. Specifically, when the UE-specific search spaces of the first carrier and the second carrier overlap, the detecting module determines, according to indication information or configuration parameters of the control resource sent by the network device, to detect control information in one of the first control resource and the second control resource, and when the following conditions are met, detect control information in the first control resource: the number of DCI format configurations corresponding to the first control resource is greater than the number of DCI format configurations corresponding to the second control resource; the number of search space type configurations corresponding to the first control resource is greater than the number of search space type configurations corresponding to the second control resource; and the number of DCI format aggregation level configurations corresponding to the first control resource is greater than the number of DCI format aggregation level configurations corresponding to the second control resource.

18. The terminal device according to claim 17, wherein, The first carrier and the second carrier are member carriers for carrier aggregation, and the first carrier and the second carrier can be used to transmit data simultaneously.

19. The terminal device according to claim 17 or 18, wherein the detection module is configured to detect control information in a search space corresponding to a CORESET associated with the common search space when the first control resource includes a common search space.

20. The terminal device according to claim 19, wherein the common search space of the terminal device is only configured in the first carrier.

21. The terminal device according to claim 18, wherein the detection module is configured to detect control information in the first control resource when both the first control resource and the second control resource are common search spaces; or the detection module is configured to detect control information in the second control resource when both the first control resource and the second control resource are dedicated search spaces of the terminal device, and the second carrier is a carrier corresponding to a secondary cell.

22. The terminal device according to claim 18, wherein the detection module is configured to detect control information in a search space corresponding to a CORESET associated with the common search space of the first control resource when the first control resource is a control resource including a common search space in the first carrier and the second control resource is a control resource including a common search space in the second carrier; or the detection module is configured to detect control information in a search space corresponding to a CORESET associated with the dedicated search space of the second control resource when the first control resource is a control resource including a dedicated search space of the terminal device in the first carrier and the second control resource is a control resource including a dedicated search space of the terminal device in the second carrier, and the second carrier is a carrier corresponding to a secondary cell; or the detection module is configured to determine to detect control information in a search space corresponding to a CORESET associated with the dedicated search space of one of the first control resource and the second control resource according to indication information sent by a network device or configuration parameters of the control resource when the first control resource is a control resource including a dedicated search space of the terminal device in the first carrier and the second control resource is a control resource including a dedicated search space of the terminal device in the second carrier.

23. The terminal device according to claim 21 or 22, wherein, The first carrier is at least one of the following: a carrier corresponding to a primary cell (PCell), a carrier corresponding to a special cell (sPCell), and a carrier corresponding to a physical uplink control channel secondary cell (PUCCH-SCell).

24. The terminal device according to claim 23, wherein, The configuration parameters of the control resource include at least one of the following: a search space type configuration parameter, a DCI format configuration parameter, and a DCI format aggregation level configuration parameter.

25. A network device, comprising: A sending module, configured to send configuration information to a terminal device, where the configuration information is used for the terminal device to determine a first control resource within a first carrier and a second control resource within a second carrier according to the configuration information, where the first control resource and the second control resource are used for transmitting control information, and the control information is used for scheduling a physical channel; A transmission module, configured to, when there is a time overlap between the first control resource and the second control resource, transmit control information within one of the first control resource and the second control resource. Specifically, when the first control resource is a common search space, the transmission module is configured to transmit control information within the first control resource; or, when there is an overlap between the per-terminal search space of the first carrier and the per-terminal search space of the second carrier, the transmission module is configured to transmit control information within one of the first control resource and the second control resource; and further send indication information or configuration parameters of the control resource to the terminal device, where the terminal device is used to determine to detect control information within one of the first control resource and the second control resource according to the indication information or the configuration parameters of the control resource, and transmit control information within the first control resource when the following conditions are met: the number of DCI format configurations corresponding to the first control resource is greater than the number of DCI format configurations corresponding to the second control resource; the number of search space type configurations corresponding to the first control resource is greater than the number of search space type configurations corresponding to the second control resource; and the number of aggregation level configurations of the DCI format corresponding to the first control resource is greater than the number of aggregation level configurations of the DCI format corresponding to the second control resource.

26. The network device according to claim 25, wherein, The first carrier and the second carrier are member carriers for carrier aggregation, and the first carrier and the second carrier can be used for simultaneous data transmission.

27. The network device according to claim 25 or 26, wherein, when the first control resource includes a common search space, the transmission module is configured to transmit control information within the search space corresponding to the CORESET associated with the common search space.

28. The network device according to claim 27, wherein, the common search space of the terminal device is only configured within the first carrier.

29. The network device according to claim 26, wherein, when both the first control resource and the second control resource are common search spaces, the transmission module is configured to transmit control information within the first control resource; or, when both the first control resource and the second control resource are per-terminal search spaces of the terminal device, the transmission module is configured to transmit control information within the second control resource, and the second carrier is a carrier corresponding to a secondary cell.

30. The network device according to claim 26, wherein, The transmission module is used to transmit control information in the search space corresponding to the CORESET associated with the common search space within the first carrier when the first control resource is the control resource including the common search space within the first carrier and the second control resource is the control resource including the common search space within the second carrier; The transmission module is used to transmit control information in the search space corresponding to the CORESET associated with the dedicated search space of the second control resource when the first control resource is the control resource including the dedicated search space of the terminal device within the first carrier and the second control resource is the control resource including the dedicated search space of the terminal device within the second carrier, and the second carrier is the carrier corresponding to the secondary cell; The transmission module is used to transmit control information in the search space corresponding to the CORESET associated with the dedicated search space of one of the first control resource and the second control resource when the first control resource is the control resource including the dedicated search space of the terminal device within the first carrier and the second control resource is the control resource including the dedicated search space of the terminal device within the second carrier; The sending module is used to send indication information or configuration parameters of the control resource to the terminal device, so that the terminal device determines to detect control information in the search space corresponding to the CORESET associated with the dedicated search space of one of the first control resource and the second control resource according to the indication information or the configuration parameters of the control resource.

31. The network device according to claim 29 or 30, wherein: The first carrier is at least one of the following: the carrier corresponding to the primary cell (PCell), the carrier corresponding to the special cell (sPCell), and the carrier corresponding to the physical uplink control channel secondary cell (PUCCH-SCell).

32. The network device according to claim 31, wherein, The configuration parameters of the control resource include at least one of the following: the search space type configuration parameter, the DCI format configuration parameter, and the aggregation level configuration parameter of the DCI format.

33. A terminal device, comprising: A processor and a memory, where the memory is used to store a computer program, and the processor calls and runs the computer program stored in the memory to execute the method according to any one of claims 1 to 8.

34. A network device, comprising: A processor and a memory, where the memory is used to store a computer program, and the processor calls and runs the computer program stored in the memory to execute the method according to any one of claims 9 to 16.

35. A chip, comprising: A processor, configured to call and run a computer program from a memory, so that a device installed with the chip executes the method according to any one of claims 1 to 16.

36. A computer-readable storage medium, used to store a computer program, wherein, The computer program enables a computer to execute the method according to any one of claims 1 to 16.

37. A computer program product, comprising computer program instructions, wherein, The computer program instructions enable a computer to execute the method according to any one of claims 1 to 16.

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