Control information sending, receiving method and device, and communication system

Abstract

The present invention provides a method and device for sending and receiving control information, and a communication system, wherein the method comprises: determining a modulation order of a physical downlink control channel PDCCH; and modulating downlink control information DCI using the modulation order. The present invention solves the technical problem that only fixed QPSK can be used to modulate DCI in the related art.

Description

Technical Field

[0001] The present invention relates to the field of communications, and in particular to a method and device for sending and receiving control information, and a communication system. Background Art

[0002] In the related technology LTE-A (LTE Evolved), the use of relay technology can effectively expand network coverage and improve cell-edge data rates. Wireless backhaul avoids the construction of wired transmission networks, enabling rapid deployment and reducing operators' construction and operating costs. Therefore, relay technology is one of the key technologies used in LTE-Advanced access node (CED) systems. In LTE-A's relay technology, the frame structure design adopts a time-division half-duplex scheme based on fake MBSFN (Multicast / Multicast Single Frequency Network) subframes. This scheme utilizes MBSFN subframe configuration, configuring some fake MBSFN subframes for backhaul link transmission, while the access link uses non-MBSFN subframes. This achieves time-division duplexing of the backhaul and access links, and is completely transparent to the terminal.

[0003] Relay technology will be utilized in 5G and subsequent evolutionary versions of related technologies. For example, in IAB (Integrated Access and Backhaul) technology, multi-hop relays will be further supported based on the 5G NR system, and the network topology will support redundant connections. This will significantly improve link quality. This improved link quality will also enable the use of higher-order modulation schemes, thereby maximizing the system performance improvements brought by relay technology.

[0004] In LTE technology, the modulation schemes for control channels and traffic channels are determined differently. For the physical downlink control channel (PDCCH), adaptive modulation scheme selection is not supported to ensure high reliability, and the PDCCH can only be modulated using QPSK (quadrature phase shift keying). For the physical downlink traffic channel (PDSCH), the base station can dynamically and adaptively determine the modulation scheme for the PDSCH scheduled for a user based on the channel quality information it obtains, and notify the user in the PDCCH DCI. Therefore, the user needs to receive the PDCCH first, and then receive the PDSCH based on the PDCCH's instructions. The user's reception of the PDCCH is based on blind detection. The base station will configure several search spaces for the user, each of which contains multiple PDCCH candidates, supporting PDCCH candidates (candidate positions) at different aggregation levels. A PDCCH candidate with an aggregation level of N means that the PDCCH candidate is aggregated from 4 CCEs.

[0005] In the 5G standard of related technologies, the concept of Band Wide Part (BWP) is also introduced. The base station can configure one or more BWPs for the terminal on a carrier and enable the terminal to understand the currently activated BWP.

[0006] To maximize the system performance improvement brought by relay technology, the PDCCH modulation order may no longer be fixed to QPSK as in LTE. Therefore, how to determine the PDCCH modulation order of a certain link is a problem that needs to be solved.

[0007] Currently, no effective solution has been found for the above-mentioned problems existing in the related technologies. Summary of the Invention

[0008] The embodiments of the present invention provide a method and device for sending and receiving control information, and a communication system.

[0009] According to an embodiment of the present invention, a method for transmitting control information is provided, comprising: determining a modulation order of a physical downlink control channel (PDCCH); and modulating downlink control information (DCI) using the modulation order.

[0010] According to one embodiment of the present invention, a method for receiving control information is provided, comprising: determining a demodulation order of a physical downlink control channel candidate position PDCCH Candidate; and performing blind detection and / or demodulation on the PDCCH Candidate based on the demodulation order.

[0011] According to another embodiment of the present invention, a control information transmitting apparatus is provided, comprising: a determining module for determining a modulation order of a physical downlink control channel (PDCCH); and a generating module for modulating downlink control information (DCI) using the modulation order.

[0012] According to another embodiment of the present invention, another control information receiving device is provided, including: a determination module, used to determine the demodulation order of a physical downlink control channel candidate position PDCCH Candidate; and a detection module, used to perform blind detection and / or demodulation on the PDCCH Candidate based on the demodulation order.

[0013] According to another embodiment of the present invention, a communication system is provided, including a transmitting end and a receiving end, wherein the transmitting end includes: a determination module for determining a modulation order of a physical downlink control channel PDCCH; a generation module for modulating downlink control information DCI using the modulation order; the receiving end includes: a determination module for determining a demodulation order of a physical downlink control channel candidate position PDCCH Candidate; and a detection module for performing blind detection and / or demodulation on the PDCCH Candidate based on the demodulation order.

[0014] According to yet another embodiment of the present invention, a storage medium is provided, in which a computer program is stored. The computer program is configured to execute the steps of any one of the above method embodiments when running.

[0015] According to another embodiment of the present invention, an electronic device is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor is configured to run the computer program to perform the steps in any one of the above method embodiments.

[0016] The present invention solves the technical problem in related technologies that only fixed QPSK can be used to modulate DCI by determining the modulation order of PDCCH and modulating DCI by the modulation order, thereby improving the flexibility and transmission performance of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 is a network architecture diagram of an embodiment of the present invention;

[0019] Figure 2 is a flowchart of a method for sending control information according to an embodiment of the present invention;

[0020] Figure 3 is a flowchart of a method for receiving control information according to an embodiment of the present invention;

[0021] Figure 4 is a structural block diagram of a device for sending control information according to an embodiment of the present invention;

[0022] Figure 5 is a structural block diagram of a device for receiving control information according to an embodiment of the present invention. DETAILED DESCRIPTION

[0023] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that, unless there is a conflict, the embodiments and features in the embodiments of the present application can be combined with each other.

[0024] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0025] Example 1

[0026] The embodiment of the present application can be run on Figure 1 In the network architecture shown, Figure 1 This is a network architecture diagram of an embodiment of the present invention, such as Figure 1 As shown, the network architecture includes: a base station and a terminal, wherein the base station interacts with the terminal.

[0027] In this embodiment, a method for sending control information running on the above network architecture is provided. Figure 2 FIG. 1 is a flow chart of a method for sending control information according to an embodiment of the present invention. Figure 2 As shown, the process includes the following steps:

[0028] Step S202, determining the modulation order of the physical downlink control channel PDCCH;

[0029] Step S204: modulate the downlink control information DCI using a modulation order.

[0030] Through the above steps, by determining the modulation order of PDCCH and modulating DCI according to the modulation order, the technical problem in related technologies that only fixed QPSK can be used to modulate DCI is solved, thereby improving the flexibility and transmission performance of the system.

[0031] Optionally, the execution entity of the above steps may be a network-side network element, such as a base station, etc., but is not limited thereto.

[0032] Optionally, determining the modulation order of the PDCCH includes at least one of the following:

[0033] The system predefines one or more PDCCH modulation orders;

[0034] The first node semi-statically configures and determines one or more PDCCH modulation orders;

[0035] Determining one or more PDCCH modulation orders according to a corresponding relationship with the first factor;

[0036] One or more PDCCH modulation orders are determined according to the corresponding relationship with the link type.

[0037] Optionally, before determining the modulation order of the PDCCH, the method further includes: the system predefines corresponding PDCCH modulation orders for different link types, and the system can be a high-level network element, such as a core network, or the first node configures corresponding PDCCH modulation orders for different link types. Specifically, the link type can be, but is not limited to: a link between a base station and a relay node; a link between a base station and a terminal; a link between a relay node and a relay node; a link between a relay node and a terminal; a link between an anchor node and a relay node; a link between an anchor node and a terminal; a link between an n-th hop node and an m-th hop node, wherein m and n are different positive integers; a link whose first measurement result satisfies a predetermined condition. Different link types may correspond to specified modulation orders. The modulation order can specifically be 16QAM (quadrature amplitude modulation) or 64QAM or 256QAM or 1024QAM and is not limited thereto.

[0038] Optionally, when the modulation order of the PDCCH is determined to be multiple modulation orders, the multiple modulation orders correspond to one or more link types.

[0039] Optionally, the first node is at least one of the following: a base station, a relay node, an anchor node, and a node that performs PDCCH configuration.

[0040] Optionally, the first measurement result may be, but is not limited to: the result obtained by the PDCCH receiving node based on the reference signal SSB of the PDCCH sending node (a synchronization signal (SS / PBCHblock) composed of the primary synchronization signal (PSS) and the secondary synchronization channel (SSS)); the result obtained by the PDCCH receiving node based on the synchronization signal of the PDCCH sending node; the result obtained by the PDCCH receiving node based on the broadcast channel of the PDCCH sending node.

[0041] Optionally, the predetermined condition may be, but is not limited to: the first measurement result is less than or equal to a threshold value; the first measurement result is greater than a threshold value; the first measurement result is between a first threshold and a second threshold.

[0042] Optionally, the first factor may be, but is not limited to, at least one of the following: PDCCH Candidate aggregation level; PDCCH DCI format type; PDCCH DCI format size; search space type; search space index; search space blind detection timing configuration; BWP index; carrier index; CORESET index; BWP configuration method. Among them, the BWP configuration method may be, but is not limited to: configuring BWP through a physical broadcast channel (PBCH); configuring BWP through a system information block (SIB) message; configuring BWP through a master information block (MIB) message; configuring BWP through remaining minimum system information (RMSI); configuring BWP through other system information (OSI); configuring BWP through radio resource control RRC signaling; configuring BWP through dedicated UE-specific RRC signaling.

[0043] Optionally, the correspondence between the first factor and the PDCCH modulation order is determined by one of the following: system pre-definition, and semi-static configuration determination of the first node.

[0044] In this embodiment, a method for receiving control information running on the above network architecture is provided. Figure 3 is a flow chart of a method for receiving control information according to an embodiment of the present invention. Figure 3 As shown, the process includes the following steps:

[0045] Step S302, determining the demodulation order of the physical downlink control channel candidate position PDCCH Candidate;

[0046] Step S304: perform blind detection and / or demodulation on the PDCCH Candidate based on the demodulation order.

[0047] Optionally, determining the demodulation order of the physical downlink control channel candidate position PDCCH Candidate to be blindly detected may be, but is not limited to: determining the demodulation order of the PDCCH Candidate according to the correspondence between the link type and the modulation order, where the link type is the link type of the link that sends the PDCCH; determining the demodulation order of the PDCCH Candidate according to the correspondence between the PDCCH Candidate aggregation level and the modulation order; determining the demodulation order of the PDCCH Candidate according to the correspondence between the DCI format size and the modulation order; determining the demodulation order of the PDCCH Candidate according to the correspondence between the DCI format type and the modulation order; determining the demodulation order of the PDCCH Candidate according to the correspondence between the search space type and the modulation order; determining the demodulation order of the PDCCH Candidate according to the correspondence between the search space opportunity and the modulation order; determining the demodulation order of the PDCCH Candidate according to the correspondence between the BWP index and the modulation order. Candidate's demodulation order; determine the demodulation order of PDCCHCandidate based on the correspondence between the carrier index and the modulation order; determine the demodulation order root of PDCCHCandidate based on the correspondence between the CORESET identifier ID and the modulation order; determine the demodulation order of PDCCHCandidate based on the correspondence between the BWP configuration mode and the modulation order.

[0048] Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus the necessary general hardware platform, and of course it can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes a number of instructions for enabling a terminal device (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods described in each embodiment of the present invention.

[0049] Example 2

[0050] In this embodiment, a device for sending and receiving control information is also provided. This device is used to implement the above-mentioned embodiments and preferred embodiments. Details already described are not repeated here. As used below, the term "module" may refer to a combination of software and / or hardware that implements a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, implementation using hardware, or a combination of software and hardware, is also possible and contemplated.

[0051] Figure 4 FIG. 1 is a structural block diagram of a device for sending control information according to an embodiment of the present invention. Figure 4 As shown, the device includes:

[0052] A determination module 40 is configured to determine a modulation order of a physical downlink control channel PDCCH;

[0053] The generating module 42 is configured to modulate downlink control information DCI using a modulation order.

[0054] Figure 5 FIG. 1 is a structural block diagram of a device for receiving control information according to an embodiment of the present invention. Figure 5 As shown, the device includes:

[0055] A determination module 50 is configured to determine a demodulation order of a physical downlink control channel candidate position PDCCH Candidate;

[0056] The detection module 52 is configured to perform blind detection and / or demodulation on the PDCCH Candidate based on the demodulation order.

[0057] This embodiment also provides a communication system, including: Figure 4 The sending end shown and Figure 5 The receiving end is shown.

[0058] It should be noted that the above modules can be implemented through software or hardware. For the latter, it can be implemented in the following ways, but not limited to: the above modules are all located in the same processor; or the above modules are located in different processors in any combination.

[0059] Example 3

[0060] This embodiment provides several methods for determining the PDCCH modulation order of a specific link, including a system predefined method; a method of semi-static configuration of a specific node; and a method of dynamically determining the order based on certain factors and certain rules. The specific rules can be system predefined or semi-statically configured for a specific node.

[0061] This embodiment provides a method for blind PDCCH detection, which determines a PDCCH modulation order based on at least one of the following: one or more PDCCH modulation orders predefined by the system; one or more PDCCH modulation orders semi-statically configured by a first node; or one or more PDCCH modulation orders dynamically determined according to a first rule. Based on the determined PDCCH modulation order, a transmitter modulates the PDCCH DCI, and a corresponding receiver blindly detects or demodulates the PDCCH candidate.

[0062] The following describes how to determine the modulation order of the PDCCH through a specific implementation method:

[0063] Implementation 1: Directly standardize a new modulation order for PDCCH modulation

[0064] The PDCCH modulation mode is determined for all or part of the links in the system using a system predefined method. For example:

[0065] The system predefines a PDCCH modulation mode, which may be, but is not limited to, 16QAM, 64QAM, 256QAM, or 1024QAM. The system predefines a PDCCH modulation mode that is valid for all air interface links.

[0066] Alternatively, the system predefines one or more PDCCH modulation modes, each of which can be QPSK, 16QAM, 64QAM, 256QAM, or 1024QAM, but is not limited to these. These PDCCH modulation modes correspond to different air interface link types, specifically including one or more of the following:

[0067] The PDCCH modulation mode of the link between the gNB and the relay node is a system-defined PDCCH modulation mode Ma;

[0068] The PDCCH modulation mode of the link between the gNB and the UE is a system-defined PDCCH modulation mode M_b;

[0069] The PDCCH modulation mode of the link between the relay and the UE is a system-predefined PDCCH modulation mode Mc;

[0070] The PDCCH modulation mode of the link between relays is a system-predefined PDCCH modulation mode M_d;

[0071] For a link between a target node and another node, when the target node's measurement result based on a reference signal for this link meets a threshold 1 or interval 1, the PDCCH modulation mode sent on this link is a system-predefined PDCCH modulation mode Me;

[0072] For a link between a target node and another node, when the target node's measurement result based on a reference signal for this link meets a threshold 2 or interval 2, the PDCCH modulation mode sent on this link is a system-predefined PDCCH modulation mode M_f;

[0073] The target node is at the nth hop, and the other node is at the mth hop. When n and m satisfy relation 1, the PDCCH sent on the link between the target node and the other node is modulated using a system-predefined PDCCH modulation mode M_g.

[0074] The target node is at the nth hop, and the other node is at the mth hop. When n and m satisfy relation 2, the PDCCH sent on the link between the target node and the other node is modulated using a system-predefined PDCCH modulation mode M_h.

[0075] The above modulation modes Ma_a, M_b, M_c, M_d, M_e, M_f, M_g, and M_h are all PDCCH modulation modes predefined by the system.

[0076] Implementation 2: The system semi-statically configures the PDCCH modulation order for different links

[0077] The PDCCH modulation configuration node in the system semi-statically configures one or more PDCCH modulation modes for the target node. For example:

[0078] The PDCCH modulation configuration node semi-statically configures a PDCCH modulation mode for the target node, which can be 16QAM, 64QAM, 256QAM or 1024QAM but is not limited to these. The PDCCH modulation of the air interface link between the target node and any other node uses the semi-statically configured PDCCH modulation mode.

[0079] Or the PDCCH modulation configuration node semi-statically configures one or more PDCCH modulation modes for the target node. Each of these modes can be QPSK, 16QAM, 64QAM, 256QAM, or 1024QAM, but is not limited to these. These PDCCH modulation modes correspond to different air interface link types, and specifically can include one or more of the following:

[0080] The link between the PDCCH modulation configuration node and the target node is modulated using a system-predefined PDCCH modulation mode Ma.

[0081] The PDCCH modulation mode of the link between the target node and other nodes except the PDCCH modulation configuration node is a system-predefined PDCCH modulation mode M_b;

[0082] The PDCCH modulation mode of the link between the target node and the gNB is a system-defined PDCCH modulation mode Mc;

[0083] The PDCCH modulation mode of the link between the target node and the relay is a system-predefined PDCCH modulation mode M_d;

[0084] The PDCCH modulation mode of the link between the target node and the UE is a system-predefined PDCCH modulation mode Me;

[0085] The target node is the n-th hop node, and the PDCCH modulation mode of the link between the target node and the m-th hop node is a system-predefined PDCCH modulation mode M_f;

[0086] The target node is the n-th hop node, and the PDCCH modulation mode of the link between the target node and the x-th hop node is a system-predefined PDCCH modulation mode M_g;

[0087] The above modulation modes M_a, M_b, M_c, M_d, M_e, M_f, and M_g are all PDCCH modulation modes semi-statically configured by the PDCCH configuration node. The PDCCH modulation configuration node can be a gNB, relay, or UE, and the target node can be a gNB, relay, or UE.

[0088] Implementation 3: Modulation order is related to AL (aggregation level)

[0089] For PDCCH transmission between a first node and a second node, the PDCCH modulation order used is related to the aggregation level of the candidate used to send the PDCCH DCI. The correspondence between the PDCCH modulation order and the PDCCH candidate aggregation level can be predefined by the system or semi-statically configured by the PDCCH modulation configuration node. For example:

[0090] The higher the aggregation level of the PDCCH Candidate, the higher the PDCCH modulation mode is used; or the lower the aggregation level of the PDCCH Candidate, the lower the PDCCH modulation mode is used.

[0091] For PDCCH Candidates with aggregation level AL={1 2}, a higher-order modulation scheme is used, such as 16QAM, 64QAM, 256QAM, or 1024QAM.

[0092] For PDCCH Candidates with aggregation level AL={4 8}, a lower-order modulation scheme is used, such as QPSK, 16QAM, 64QAM, or 256QAM;

[0093] For PDCCH Candidates with aggregation level AL = {16 32}, a low-order modulation scheme is used, such as QPSK, 16QAM, or 64QAM.

[0094] According to the correspondence between the PDCCH Candidate aggregation level and the PDCCH modulation order, when the first node blindly detects or demodulates the PDCCH that may be sent by the second node, it adopts the corresponding demodulation order according to the aggregation level of the blindly detected PDCCH Candidate.

[0095] Implementation 4: Modulation order is related to DCI format size

[0096] For PDCCH transmission between a first node and a second node, the PDCCH modulation order used is related to the size of the DCI format used to send the PDCCH DCI. The correspondence between different DCI format sizes and PDCCH modulation orders can be predefined by the system or semi-statically configured by the PDCCH modulation configuration node. For example:

[0097] The smaller the DCI format size sent, the lower the PDCCH modulation method used; the larger the DCI format size sent, the higher the PDCCH modulation method used.

[0098] For fallback DCI, such as DCI format x_0, a lower-order modulation scheme is used, such as QPSK, 16QAM, 64QAM, or 256QAM.

[0099] For non-fallback DCI, such as DCI formats other than DCI format x_0, a higher-order modulation scheme is used, such as 16QAM, 64QAM, 256QAM, or 1024QAM;

[0100] If the system or the first node supports n DCI format sizes, specifically sizes N_0, N_1, ..., N_n-1, then these n DCI format sizes may correspond to PDCCH modulation orders M_0, M_1, ..., M_n-1, respectively. The modulation orders M_0, M_1, ..., M_n-1 are selected from QPSK, 16QAM, 64QAM, 256QAM, and 1024QAM and may be the same or different.

[0101] According to the correspondence between the DCI format size and the PDCCH modulation order, when the first node blindly detects or demodulates the PDCCH that may be sent by the second node, the first node adopts the corresponding demodulation order according to the DCI format size used for blind detection.

[0102] Implementation 5: Modulation order is related to DCI format type

[0103] For PDCCH transmission between a first node and a second node, the PDCCH modulation order used is related to the DCI format used to send the PDCCH DCI. The correspondence between different DCI formats and PDCCH modulation orders can be predefined by the system or semi-statically configured by the PDCCH modulation configuration node. For example:

[0104] DCI format x0_y0, corresponding to PDCCH modulation order Ma;

[0105] DCI format x1_y1, corresponding to PDCCH modulation order M_b;

[0106] DCI format x0_y1, corresponding to PDCCH modulation order Mc;

[0107] DCI format x1_y0, corresponding to PDCCH modulation order M_d;

[0108] DCI format x2_y2, corresponding to PDCCH modulation order Me;

[0109] DCI format x2_y0, corresponding to PDCCH modulation order M_f;

[0110] DCI format x2_y1, corresponding to PDCCH modulation order M_g;

[0111] DCI format x0_y2, corresponding to PDCCH modulation order M_h;

[0112] DCI format x1_y2, corresponding to PDCCH modulation order Mi_i;

[0113] The above modulation modes Ma_a, M_b, M_c, M_d, M_e, M_f, M_g, M_h, and Mi_i are all PDCCH modulation orders, which can be the same or different.

[0114] According to the correspondence between the DCI format and the PDCCH modulation order, when the first node blindly detects or demodulates the PDCCH that may be sent by the second node, the first node adopts the corresponding demodulation order according to the DCI format used for blind detection.

[0115] Implementation 6: Modulation order is related to search space type

[0116] For PDCCH transmission between the first node and the second node, the PDCCH modulation order used is related to the search space of blind detection. The correspondence between different search spaces and PDCCH modulation orders can be predefined by the system or semi-statically configured by the PDCCH modulation configuration node. For example:

[0117] All PDCCH Candidates in the common search space correspond to the PDCCH modulation order M_a;

[0118] All PDCCH candidates in the node-specific search space or the non-public search space correspond to the PDCCH modulation order M_b.

[0119] Or search space 1 for blind detection of type 1 downlink control signaling, including all PDCCH candidates, corresponding to the PDCCH modulation order M_a;

[0120] Search space 2 for blind detection of type 2 downlink control signaling, including all PDCCH candidates and corresponding PDCCH modulation order M_b;

[0121] The above modulation modes Ma_a and M_b are both PDCCH modulation orders, which can be the same or different.

[0122] According to the corresponding relationship between the specific search space and the PDCCH modulation order, the first node adopts the corresponding demodulation order according to the blind detection search space when blindly detecting or demodulating the PDCCH that may be sent by the second node.

[0123] Implementation 7: Modulation order is related to search space occasion

[0124] For PDCCH transmission between the first node and the second node, the PDCCH modulation order used is related to the blind detection timing configuration of the blind detection search space. The correspondence between the search space configured for different blind detection timings and the PDCCH modulation order can be predefined by the system or semi-statically configured by the PDCCH modulation configuration node. For example:

[0125] The blind detection opportunity is configured in a search space with a relatively high frequency in the time domain, which may correspond to a higher PDCCH modulation order; the blind detection opportunity is configured in a search space with an infrequent frequency in the time domain, which may correspond to a lower PDCCH modulation order.

[0126] The blind detection period is configured as the search space of P1, and all PDCCH Candidates contained therein correspond to the PDCCH modulation order M_a;

[0127] The blind detection cycle is configured as the search space of P2, which contains all PDCCH candidates corresponding to the PDCCH modulation order M_b;

[0128] The above modulation modes Ma_a and M_b are both PDCCH modulation orders, which can be the same or different.

[0129] According to the correspondence between the search space configured with a specific period and the PDCCH modulation order, when the first node blindly detects or demodulates the PDCCH that may be sent by the second node, it adopts the corresponding demodulation order according to the period configuration of the blind detection search space.

[0130] Implementation 8: Modulation order is related to BWP

[0131] For PDCCH transmission between the first node and the second node, the PDCCH modulation order to be used is semi-statically configured by the PDCCH modulation configuration node. The PDCCH modulation configuration node can configure a specific PDCCH modulation order to be used when blindly detecting PDCCH on a specific BWP. For example:

[0132] When blindly detecting PDCCH on the CORESET and / or search space whose frequency domain range belongs to BWP1, all PDCCH Candidates contained therein correspond to the PDCCH modulation order Ma_a;

[0133] When blindly detecting PDCCH on a CORESET and / or search space whose frequency domain range belongs to BWP2, all PDCCH Candidates contained therein correspond to the PDCCH modulation order M_b;

[0134] The above modulation modes Ma_a and M_b are both PDCCH modulation orders, which can be the same or different.

[0135] According to the correspondence between the blind detection CORESET and / or the BWP where the search space is located and the PDCCH modulation order, when the first node blindly detects or demodulates the PDCCH that may be sent by the second node, it adopts the corresponding demodulation order according to the BWP where the blind detection CORESET and / or the search space is located.

[0136] Implementation 9: Modulation Order and Carrier Related

[0137] For PDCCH transmission between the first node and the second node, the PDCCH modulation order to be used is semi-statically configured by the PDCCH modulation configuration node. The PDCCH modulation configuration node can configure a specific PDCCH modulation order to be used when blindly detecting PDCCH on a specific carrier. For example:

[0138] When blindly detecting PDCCH on the CORESET and / or search space whose frequency domain range belongs to carrier 1, all PDCCH Candidates contained therein correspond to the PDCCH modulation order Ma_a;

[0139] When blindly detecting PDCCH on the CORESET and / or search space of carrier 2 in the frequency domain, all PDCCH Candidates contained therein correspond to the PDCCH modulation order M_b;

[0140] The above modulation modes Ma_a and M_b are both PDCCH modulation orders, which can be the same or different.

[0141] According to the correspondence between the carrier where the blind detection CORESET and / or search space is located and the PDCCH modulation order, when the first node blindly detects or demodulates the PDCCH that may be sent by the second node, it adopts the corresponding demodulation order according to the carrier where the blind detection CORESET and / or search space is located.

[0142] Implementation 10: Modulation order is related to CORESET ID

[0143] For PDCCH transmission between the first node and the second node, the PDCCH modulation order to be used is semi-statically configured by the PDCCH modulation configuration node. The PDCCH modulation configuration node can configure a specific PDCCH modulation order to be used when blindly detecting PDCCH on a specific CORESET. For example:

[0144] When blindly detecting PDCCH on CORESET1, all PDCCH Candidates contained therein correspond to the PDCCH modulation order Ma_a;

[0145] When blindly detecting PDCCH on CORESET2, all PDCCH Candidates it contains correspond to the PDCCH modulation order M_b;

[0146] The above modulation modes Ma_a and M_b are both PDCCH modulation orders, which can be the same or different.

[0147] According to the corresponding relationship between the blind detection CORESET and the PDCCH modulation order, the first node adopts the corresponding demodulation order according to the blind detection CORESET when blindly detecting or demodulating the PDCCH that may be sent by the second node.

[0148] Implementation 11:

[0149] For BWPs configured through system messages such as PBCH, RMSI, OSI, MIB, SIB, etc., or initial BWPs, the system predefines that the PDCCH sent on these BWPs uses a fixed modulation order of 1, which can be QPSK, 16QAM, or 64QAM.

[0150] For the BWPs configured through UE-specific RRC signaling, the modulation order used for the PDCCHs sent on these BWPs can be referred to the above embodiments.

[0151] Example 4

[0152] An embodiment of the present invention further provides a storage medium storing a computer program, wherein the computer program is configured to execute the steps of any of the above method embodiments when running.

[0153] Optionally, in this embodiment, the storage medium may be configured to store a computer program for performing the following steps:

[0154] S1, determine the modulation order of the physical downlink control channel PDCCH;

[0155] S2: modulate the downlink control information DCI using a modulation order.

[0156] Optionally, in this embodiment, the above-mentioned storage medium may include but is not limited to: a USB flash drive, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk or an optical disk, and other media that can store computer programs.

[0157] An embodiment of the present invention further provides an electronic device, comprising a memory and a processor, wherein the memory stores a computer program, and the processor is configured to run the computer program to execute the steps in any one of the above method embodiments.

[0158] Optionally, the electronic device may further include a transmission device and an input / output device, wherein the transmission device is connected to the processor, and the input / output device is connected to the processor.

[0159] Optionally, in this embodiment, the processor may be configured to execute the following steps through a computer program:

[0160] S1, determine the modulation order of the physical downlink control channel PDCCH;

[0161] S2: modulate the downlink control information DCI using a modulation order.

[0162] Optionally, specific examples in this embodiment may refer to the examples described in the above embodiments and optional implementation modes, and this embodiment will not be described in detail here.

[0163] Obviously, those skilled in the art will appreciate that the various modules or steps of the present invention described above can be implemented using a general-purpose computing device, centralized on a single computing device, or distributed across a network of multiple computing devices. Alternatively, they can be implemented using program code executable by a computing device, which can then be stored in a storage device and executed by the computing device. In some cases, the steps shown or described can be performed in a different order than that shown, or can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, the present invention is not limited to any particular combination of hardware and software.

[0164] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A method for sending control information, characterized in that: include: Determine the modulation order of the physical downlink control channel PDCCH; Modulate downlink control information DCI using the modulation order; Wherein, determining the modulation order of the PDCCH includes: determining one or more PDCCH modulation orders according to a corresponding relationship with the first factor; The first factor includes at least one of the following: bandwidth part BWP index; CORESET index; BWP configuration mode; The BWP configuration method includes at least one of the following: configuring BWP through a physical broadcast channel PBCH; configuring BWP through a system information block SIB message; configuring BWP through a master information block MIB message; configuring BWP through residual minimized system information RMSI; configuring BWP through other system information OSI; configuring BWP through radio resource control RRC signaling; configuring BWP through proprietary UE-specific RRC signaling; The corresponding relationship between the first factor and the PDCCH modulation order is determined by one of the following: system pre-definition and semi-static configuration of the first node.

2. The method according to claim 1, characterized in that Determining the modulation order of the PDCCH also includes at least one of the following: The system predefines one or more PDCCH modulation orders; The first node semi-statically configures one or more PDCCH modulation orders; One or more PDCCH modulation orders are determined according to the corresponding relationship with the link type.

3. The method according to claim 1, characterized in that Before determining the modulation order of the PDCCH, the method further includes: The system predefines corresponding PDCCH modulation orders for different link types, or the first node configures corresponding PDCCH modulation orders for different link types.

4. The method according to claim 2, characterized in that: The link type includes at least one of the following: Links between base stations and relay nodes; Links between base stations and terminals; Links between relay nodes; Links between relay nodes and terminals; Links between anchor nodes and relay nodes; Links between anchor nodes and terminals; A link between the n-th hop node and the m-th hop node, where m and n are different positive integers; The first measurement result satisfies the predetermined condition.

5. The method according to claim 2, characterized in that: When the modulation order of the PDCCH is determined to be a plurality of modulation orders, the plurality of modulation orders correspond to one or more link types.

6. The method according to claim 2, characterized in that The first node is at least one of the following: a base station, a relay node, an anchor node, and a node that performs PDCCH configuration.

7. The method according to claim 4, characterized in that The first measurement result includes at least one of the following: The PDCCH receiving node performs measurement based on the reference signal of the PDCCH sending node; The PDCCH receiving node measures the synchronization signal of the PDCCH sending node; The PDCCH receiving node obtains the measurement result based on the broadcast channel of the PDCCH sending node.

8. The method according to claim 4, characterized in that The predetermined condition includes at least one of the following: The first measurement result is less than or equal to the threshold value; The first measurement result is greater than the threshold value; The first measurement result is between the first threshold and the second threshold.

9. The method according to claim 1, characterized in that: The first factor also includes: PDCCH Candidate aggregation level.

10. The method according to claim 1, characterized in that Dynamically determining one or more PDCCH modulation orders according to a corresponding relationship with the first factor includes: When the value of the first factor is in the first range, the PDCCH modulation order is the first modulation order; when the value of the first factor is in the second range, the PDCCH modulation order is the second modulation order, wherein the first range and the second range are preset values ​​or preset intervals.

11. A method for receiving control information, characterized in that: include: Determine the demodulation order of the physical downlink control channel candidate position PDCCH Candidate; Performing blind detection and / or demodulation on the PDCCH Candidate based on the demodulation order; The demodulation order of determining the physical downlink control channel candidate position PDCCH Candidate includes one of the following: Determine the demodulation order of the PDCCH Candidate according to the corresponding relationship between the BWP index and the modulation order; Determine the demodulation order of the PDCCH Candidate according to the corresponding relationship between the CORESET identifier ID and the modulation order; Determine the demodulation order of the PDCCH Candidate according to the corresponding relationship between the BWP configuration mode and the modulation order; The BWP configuration method includes at least one of the following: configuring BWP through a physical broadcast channel PBCH; configuring BWP through a system information block SIB message; configuring BWP through a master information block MIB message; configuring BWP through residual minimized system information RMSI; configuring BWP through other system information OSI; configuring BWP through radio resource control RRC signaling; configuring BWP through proprietary UE-specific RRC signaling; The corresponding relationships between the BWP index, CORESET index, BWP configuration mode and the PDCCH modulation order are determined by one of the following: system pre-definition and first node semi-static configuration.

12. The method according to claim 11, characterized in that The demodulation order of determining the candidate location of the physical downlink control channel PDCCH Candidate also includes one of the following: Determine the demodulation order of the PDCCH Candidate according to the correspondence between the link type and the modulation order, wherein the link type is the link type of the link that sends the PDCCH; The demodulation order of the PDCCH Candidate is determined according to the corresponding relationship between the PDCCH Candidate aggregation level and the modulation order.

13. A device for sending control information, characterized in that: include: A determination module, used to determine the modulation order of the physical downlink control channel PDCCH; A generating module, configured to modulate downlink control information DCI using the modulation order; The device is further configured to determine one or more PDCCH modulation orders according to a corresponding relationship with the first factor; The first factor includes at least one of the following: bandwidth part BWP index; CORESET index; BWP configuration mode; The BWP configuration method includes at least one of the following: configuring BWP through a physical broadcast channel PBCH; configuring BWP through a system information block SIB message; configuring BWP through a master information block MIB message; configuring BWP through residual minimized system information RMSI; configuring BWP through other system information OSI; configuring BWP through radio resource control RRC signaling; configuring BWP through proprietary UE-specific RRC signaling; The corresponding relationship between the first factor and the PDCCH modulation order is determined by one of the following: system pre-definition and semi-static configuration of the first node.

14. A device for receiving control information, characterized in that: include: A determination module, used to determine the demodulation order of a physical downlink control channel candidate position PDCCH Candidate; A detection module, configured to perform blind detection and / or demodulation on the PDCCH Candidate based on the demodulation order; The device is further configured to determine the demodulation order of the physical downlink control channel candidate position PDCCH Candidate by at least one of the following methods: Determine the demodulation order of the PDCCH Candidate according to the corresponding relationship between the BWP index and the modulation order; Determine the demodulation order of the PDCCH Candidate according to the corresponding relationship between the CORESET identifier ID and the modulation order; Determine the demodulation order of the PDCCH Candidate according to the corresponding relationship between the BWP configuration mode and the modulation order; The BWP configuration method includes at least one of the following: configuring BWP through a physical broadcast channel PBCH; configuring BWP through a system information block SIB message; configuring BWP through a master information block MIB message; configuring BWP through residual minimized system information RMSI; configuring BWP through other system information OSI; configuring BWP through radio resource control RRC signaling; configuring BWP through proprietary UE-specific RRC signaling; The corresponding relationships between the BWP index, CORESET index, BWP configuration mode and the PDCCH modulation order are determined by one of the following: system pre-definition and first node semi-static configuration.

15. A communication system, comprising a transmitting end and a receiving end, characterized in that: The transmitting end comprises: A determination module, used to determine the modulation order of the physical downlink control channel PDCCH; A generating module, configured to modulate downlink control information DCI using the modulation order; The transmitting end is further used to determine one or more PDCCH modulation orders according to the corresponding relationship with the first factor; The first factor includes at least one of the following: bandwidth part BWP index; CORESET index; BWP configuration mode; The BWP configuration method includes at least one of the following: configuring BWP through a physical broadcast channel PBCH; configuring BWP through a system information block SIB message; configuring BWP through a master information block MIB message; configuring BWP through residual minimized system information RMSI; configuring BWP through other system information OSI; configuring BWP through radio resource control RRC signaling; configuring BWP through proprietary UE-specific RRC signaling; The corresponding relationship between the first factor and the PDCCH modulation order is determined by one of the following: system pre-definition, semi-static configuration of the first node; The receiving end comprises: A determination module, used to determine the demodulation order of a physical downlink control channel candidate position PDCCH Candidate; A detection module, configured to perform blind detection and / or demodulation on the PDCCH Candidate based on the demodulation order; The receiving end is further configured to determine the demodulation order of the physical downlink control channel candidate position PDCCH Candidate by at least one of the following methods: Determine the demodulation order of the PDCCH Candidate according to the corresponding relationship between the BWP index and the modulation order; Determine the demodulation order of the PDCCH Candidate according to the corresponding relationship between the CORESET identifier ID and the modulation order; The demodulation order of the PDCCH Candidate is determined according to the corresponding relationship between the BWP configuration mode and the modulation order.

16. A storage medium, characterized in that: The storage medium stores a computer program, wherein the computer program is configured to execute the method according to any one of claims 1 to 12 when executed.

17. An electronic device comprising a memory and a processor, characterized in that: A computer program is stored in the memory, and the processor is configured to run the computer program to perform the method according to any one of claims 1 to 12.

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