Communication methods, communication devices and storage media

Abstract

This disclosure relates to a communication method, communication apparatus, and storage medium. In the communication method, a first decoding method for downlink control information is determined; the downlink control information is downlink control information received using one or more beam directions on one or more candidate physical downlink control channels. This disclosure improves the success rate of receiving and decoding downlink control information.

Description

Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to communication methods, communication devices and storage media. Background Technology

[0002] In New Radio (NR) technologies, such as communication bands in frequency range 2, beam-based transmission and reception are required to ensure coverage due to the rapid attenuation of high-frequency channels. When network devices (e.g., base stations) have multiple Transmission Reception Points (TRPs), multiple TRPs can be used to provide services to terminals, including using multiple TRPs to transmit the physical downlink control channel (PDCCH) to terminals.

[0003] When a network device uses multiple (typically 2) TRPs to send PDCCHs to a terminal, different TRPs use different beams for transmission. For the candidate PDCCHs used to send Downlink Control Information (DCI) signaling to different TRPs, the terminal may have multiple different decoding methods, but the time-domain or frequency-domain resources corresponding to multiple PDCCH candidates can be the same or different.

[0004] Different decoding methods for PDCCH have varying applicable scenarios and each possesses its own advantages and disadvantages. Determining the appropriate decoding method for the terminal is a problem that needs to be solved. Summary of the Invention

[0005] To overcome the problems existing in related technologies, this disclosure provides a communication method, a communication device, and a storage medium.

[0006] According to a first aspect of the present disclosure, a communication method is provided, applied to a terminal, the communication method comprising:

[0007] A first decoding method for downlink control information is determined; the downlink control information is downlink control information received on one or more candidate physical downlink control channels using one or more beam directions, and the first decoding method is one or more of a variety of different second decoding methods.

[0008] In one embodiment, the first decoding method includes at least one of the following: independently decoding downlink control information received on one or more candidate physical downlink control channels; or combining and decoding downlink control information received on one or more candidate physical downlink control channels.

[0009] In one embodiment, determining the first decoding method of the downlink control information includes: determining the first decoding method of the downlink control information based on the first signaling.

[0010] In one implementation, the first signaling is used to indicate one or more of a variety of different second decoding methods.

[0011] In one embodiment, the one or more candidate physical downlink control channels include a first number of candidate physical downlink control channel combinations; wherein the number of candidate physical downlink control channels in each candidate physical downlink control channel combination is greater than or equal to 1 and less than or equal to the total number of the one or more candidate physical downlink control channels; the second decoding method includes: performing combined decoding on the downlink control information received on the candidate physical downlink control channels in each candidate physical downlink control channel combination in the first number of candidate physical downlink control channel combinations.

[0012] In one embodiment, the first signaling includes one or more combinations of Radio Resource Control (RRC) signaling, Media Access Control (MAC) Control Element (CE) signaling, and Downlink Control Information (DCI) signaling.

[0013] In one embodiment, the first signaling is used to indicate the time-frequency resources of a first candidate physical downlink control channel or a second candidate physical downlink control channel;

[0014] The first candidate physical downlink control channel time-frequency resource is the time-frequency resource of the candidate physical downlink control channel for a physical downlink control channel transmission mode based on multiple transmit receiver points (TRPs), and the second candidate physical downlink control channel time-frequency resource is the time-frequency resource of the candidate physical downlink control channel for a physical downlink control channel transmission mode based on a single transmit receiver point (TRP). The first candidate physical downlink control channel time-frequency resource and the second candidate physical downlink control channel time-frequency resource correspond to different decoding methods.

[0015] In one embodiment, the first candidate physical downlink control channel time-frequency resources correspond to a combined decoding method, and the second candidate physical downlink control channel time-frequency resources correspond to an independent decoding method.

[0016] In one embodiment, the first decoding method for determining downlink control information includes:

[0017] Based on the first state, a first decoding method for downlink control information is determined; wherein, the first state and non-first state correspond to different decoding methods.

[0018] In one implementation, the first state corresponds to an independent decoding method, and the non-first state corresponds to a merged decoding method.

[0019] In one implementation, the first state corresponds to an independent decoding method, and / or the second state corresponds to a combined decoding method, determined based on the protocol.

[0020] In one implementation, the first state includes one or a combination of the following:

[0021] The Channel State Information (CSI) feedback of multiple candidate physical downlink control channels indicates the existence of candidate physical downlink control channels with poor CSI feedback values.

[0022] Among the demodulation reference signals (DMRS) on multiple candidate physical downlink control channels, there is a DMRS with poor reception performance; the transmission control indication (TCI) status of multiple candidate physical downlink control channels uses independent signaling indication, and there is a candidate physical downlink control channel with a failed TCI status indication; among the multiple candidate physical downlink control channels, there is a candidate physical downlink control channel corresponding to the transmission receiver point (TRP) that has experienced beam failure.

[0023] In one embodiment, the first state includes the presence of a DMRS with poor reception performance among multiple candidate physical downlink control channels (DMRSs). The method further includes receiving downlink control information on the candidate physical downlink control channel corresponding to the DMRS with the best reception performance among the multiple candidate physical downlink control channels.

[0024] In one embodiment, the first state includes the Transmission Control Indicator (TCI) state of multiple candidate physical downlink control channels using independent signaling indication, and there is a candidate physical downlink control channel whose TCI state indication has failed. The method further includes: receiving downlink control information on a candidate physical downlink control channel whose TCI state indication has succeeded.

[0025] In one embodiment, the first state includes a candidate physical downlink control channel corresponding to a Transmission Receiver Point (TRP) that has experienced beam failure among a plurality of candidate physical downlink control channels. The method further includes: receiving downlink control information on the candidate physical downlink control channel corresponding to a Transmission Receiver Point (TRP) that has not experienced beam failure.

[0026] According to a second aspect of the present disclosure, a communication method is provided, applied to a network device, the communication method comprising:

[0027] A first transmission method for downlink control information is determined; the downlink control information is downlink control information transmitted using one or more beam directions on one or more candidate physical downlink control channels, the first transmission method is transmitting downlink control information on one or more physical downlink control channels, and the first transmission method corresponds to the first decoding method of the terminal.

[0028] In one embodiment, the first decoding method includes at least one of the following: independently decoding downlink control information transmitted on one or more candidate physical downlink control channels; or combining and decoding downlink control information transmitted on one or more candidate physical downlink control channels.

[0029] In one embodiment, the first sending method corresponds to the first decoding method of the terminal, including: sending downlink control information based on the first signaling, which is a first decoding method indication information.

[0030] In one implementation, the first signaling is used to indicate one or more of a variety of different second decoding methods.

[0031] In one embodiment, the one or more candidate physical downlink control channels include a first number of candidate physical downlink control channel combinations; wherein the number of candidate physical downlink control channels in each candidate physical downlink control channel combination is greater than or equal to 1 and less than or equal to the total number of the one or more candidate physical downlink control channels.

[0032] The second decoding method includes: performing combined decoding on the downlink control information transmitted on the candidate physical downlink control channel in each candidate physical downlink control channel combination in the first number of candidate physical downlink control channel combinations.

[0033] In one embodiment, the first signaling includes one or more combinations of Radio Resource Control (RRC) signaling, Media Access Control (MAC) Control Element (CE) signaling, and Downlink Control Information (DCI) signaling.

[0034] In one embodiment, the first signaling is used to indicate the time-frequency resources of a first candidate physical downlink control channel or a second candidate physical downlink control channel;

[0035] The first candidate physical downlink control channel time-frequency resource is the time-frequency resource of the candidate physical downlink control channel for a physical downlink control channel transmission mode based on multiple transmission receiver points (TRPs), and the second candidate physical downlink control channel time-frequency resource is the time-frequency resource of the candidate physical downlink control channel for a physical downlink control channel transmission mode based on a single transmission receiver point (TRP).

[0036] The first candidate physical downlink control channel time-frequency resources and the second candidate physical downlink control channel time-frequency resources correspond to different decoding methods.

[0037] In one embodiment, the first candidate physical downlink control channel time-frequency resources correspond to a combined decoding method, and the second candidate physical downlink control channel time-frequency resources correspond to an independent decoding method.

[0038] According to a third aspect of the present disclosure, a communication device is provided for use in a terminal, the communication device comprising: a receiving unit configured to determine a first decoding method for downlink control information;

[0039] The downlink control information is downlink control information received on one or more candidate physical downlink control channels using one or more beam directions, and the first decoding method is one or more of a variety of different second decoding methods.

[0040] In one embodiment, the first decoding method includes at least one of the following: independently decoding downlink control information received on one or more candidate physical downlink control channels; or combining and decoding downlink control information received on one or more candidate physical downlink control channels.

[0041] In one embodiment, the receiving unit determines a first decoding method for downlink control information based on a first signaling.

[0042] In one implementation, the first signaling is used to indicate one or more of a variety of different second decoding methods.

[0043] In one embodiment, the one or more candidate physical downlink control channels include a first number of candidate physical downlink control channel combinations; wherein the number of candidate physical downlink control channels in each candidate physical downlink control channel combination is greater than or equal to 1 and less than or equal to the total number of the one or more candidate physical downlink control channels; the second decoding method includes: performing combined decoding on the downlink control information received on the candidate physical downlink control channels in each candidate physical downlink control channel combination in the first number of candidate physical downlink control channel combinations.

[0044] In one embodiment, the first signaling includes one or more combinations of Radio Resource Control (RRC) signaling, Media Access Control (MAC) Control Element (CE) signaling, and Downlink Control Information (DCI) signaling.

[0045] In one embodiment, the first signaling is used to indicate the time-frequency resources of a first candidate physical downlink control channel or a second candidate physical downlink control channel;

[0046] The first candidate physical downlink control channel time-frequency resource is the time-frequency resource of the candidate physical downlink control channel for a physical downlink control channel transmission mode based on multiple transmit receiver points (TRPs), and the second candidate physical downlink control channel time-frequency resource is the time-frequency resource of the candidate physical downlink control channel for a physical downlink control channel transmission mode based on a single transmit receiver point (TRP). The first candidate physical downlink control channel time-frequency resource and the second candidate physical downlink control channel time-frequency resource correspond to different decoding methods.

[0047] In one embodiment, the first candidate physical downlink control channel time-frequency resources correspond to a combined decoding method, and the second candidate physical downlink control channel time-frequency resources correspond to an independent decoding method.

[0048] In one embodiment, the receiving unit determines a first decoding method for downlink control information based on a first state; wherein the first state and non-first state correspond to different decoding methods.

[0049] In one implementation, the first state corresponds to an independent decoding method, and the non-first state corresponds to a merged decoding method.

[0050] In one implementation, the first state corresponds to an independent decoding method, and / or the second state corresponds to a combined decoding method, determined based on the protocol.

[0051] In one implementation, the first state includes one or a combination of the following:

[0052] The Channel State Information (CSI) feedback on multiple candidate physical downlink control channels indicates that there are candidate physical downlink control channels with poor CSI feedback values; among the demodulation reference signals (DMRS) on multiple candidate physical downlink control channels, there is a DMRS with poor reception performance; the Transmission Control Indicator (TCI) status of multiple candidate physical downlink control channels uses independent signaling indication, and there is a candidate physical downlink control channel with a failed TCI status indication; among the multiple candidate physical downlink control channels, there is a candidate physical downlink control channel corresponding to a Transmission Receiver Point (TRP) that has experienced beam failure.

[0053] In one embodiment, the first state includes the presence of a DMRS with poor reception performance among multiple candidate physical downlink control channels (DMRSs). The receiving unit is further configured to: receive downlink control information on the candidate physical downlink control channel corresponding to the DMRS with the best reception performance among the multiple candidate physical downlink control channels (DMRSs).

[0054] In one embodiment, the first state includes multiple candidate physical downlink control channels whose Transmission Control Indicator (TCI) states are indicated by independent signaling, and there is a candidate physical downlink control channel whose TCI state indication has failed. The receiving unit is further configured to: receive downlink control information on the candidate physical downlink control channel whose TCI state indication has succeeded.

[0055] In one embodiment, the first state includes a candidate physical downlink control channel corresponding to a Transmitter Receiver Point (TRP) that has experienced beam failure among a plurality of candidate physical downlink control channels. The receiving unit is further configured to: receive downlink control information on the candidate physical downlink control channel corresponding to a Transmitter Receiver Point (TRP) that has not experienced beam failure.

[0056] According to a fourth aspect of the present disclosure, a communication device is provided for use in a network device, the communication device comprising:

[0057] The transmitting unit is used to determine a first transmitting mode of downlink control information; the downlink control information is downlink control information transmitted using one or more beam directions on one or more candidate physical downlink control channels, the first transmitting mode is transmitting downlink control information on one or more physical downlink control channels, and the first transmitting mode corresponds to a first decoding mode of the terminal.

[0058] In one embodiment, the first decoding method includes at least one of the following: independently decoding downlink control information transmitted on one or more candidate physical downlink control channels; or combining and decoding downlink control information transmitted on one or more candidate physical downlink control channels.

[0059] In one embodiment, the transmitting unit transmits first decoding mode indication information of downlink control information based on the first signaling.

[0060] In one implementation, the first signaling is used to indicate one or more of a variety of different second decoding methods.

[0061] In one embodiment, the one or more candidate physical downlink control channels include a first number of candidate physical downlink control channel combinations; wherein the number of candidate physical downlink control channels in each candidate physical downlink control channel combination is greater than or equal to 1 and less than or equal to the total number of the one or more candidate physical downlink control channels.

[0062] The second decoding method includes: performing combined decoding on the downlink control information transmitted on the candidate physical downlink control channel in each candidate physical downlink control channel combination in the first number of candidate physical downlink control channel combinations.

[0063] In one embodiment, the first signaling includes one or more combinations of Radio Resource Control (RRC) signaling, Media Access Control (MAC) Control Element (CE) signaling, and Downlink Control Information (DCI) signaling.

[0064] In one embodiment, the first signaling is used to indicate the time-frequency resources of a first candidate physical downlink control channel or a second candidate physical downlink control channel;

[0065] The first candidate physical downlink control channel time-frequency resource is the time-frequency resource of the candidate physical downlink control channel for a physical downlink control channel transmission mode based on multiple transmission receiver points (TRPs), and the second candidate physical downlink control channel time-frequency resource is the time-frequency resource of the candidate physical downlink control channel for a physical downlink control channel transmission mode based on a single transmission receiver point (TRP).

[0066] The first candidate physical downlink control channel time-frequency resources and the second candidate physical downlink control channel time-frequency resources correspond to different decoding methods.

[0067] In one embodiment, the first candidate physical downlink control channel time-frequency resources correspond to a combined decoding method, and the second candidate physical downlink control channel time-frequency resources correspond to an independent decoding method.

[0068] According to a fifth aspect of the present disclosure, a communication device is provided, comprising:

[0069] Processor; memory used to store processor-executable instructions;

[0070] The processor is configured to execute the communication method described in the first aspect or any embodiment of the first aspect.

[0071] According to a sixth aspect of the present disclosure, a communication device is provided, comprising:

[0072] Processor; memory used to store processor-executable instructions;

[0073] The processor is configured to execute the communication method described in the second aspect or any embodiment of the second aspect.

[0074] According to a seventh aspect of this disclosure, a non-transitory computer-readable storage medium is provided, wherein when instructions in the storage medium are executed by a processor of a mobile terminal, the mobile terminal is enabled to perform the communication method described in the first aspect or any embodiment of the first aspect.

[0075] According to an eighth aspect of this disclosure, a non-transitory computer-readable storage medium is provided, wherein when instructions in the storage medium are executed by a processor of a network device, the network device is enabled to perform the communication method described in the second aspect or any embodiment of the second aspect.

[0076] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects: when receiving downlink control information on one or more candidate physical downlink control channels using one or more beam directions, the terminal determines the first decoding method of the downlink control information, which can improve the reception and decoding success rate of the downlink control information.

[0077] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0078] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0079] Figure 1 This is a schematic diagram of a wireless communication system according to an exemplary embodiment.

[0080] Figure 2 This is a flowchart illustrating a communication method according to an exemplary embodiment.

[0081] Figure 3 This is a flowchart illustrating a communication method according to an exemplary embodiment.

[0082] Figure 4 This is a flowchart illustrating a communication method according to an exemplary embodiment.

[0083] Figure 5 This is a flowchart illustrating a communication method according to an exemplary embodiment.

[0084] Figure 6 This is a flowchart illustrating a communication method according to an exemplary embodiment.

[0085] Figure 7 This is a block diagram illustrating a communication device according to an exemplary embodiment.

[0086] Figure 8 This is a block diagram illustrating a communication device according to an exemplary embodiment.

[0087] Figure 9 This is a block diagram illustrating a communication apparatus according to an exemplary embodiment.

[0088] Figure 10This is a block diagram illustrating a communication apparatus according to an exemplary embodiment. Detailed Implementation

[0089] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0090] The data transmission method provided in this disclosure can be applied to... Figure 1 The wireless communication system shown. (See attached image) Figure 1 As shown, this wireless communication system includes a terminal and a network device. The terminal connects to the network device via wireless resources and transmits and receives data.

[0091] Understandable, Figure 1 The wireless communication system shown is for illustrative purposes only. A wireless communication system may also include other network devices, such as core network equipment, wireless relay equipment, and wireless backhaul equipment. Figure 1 Not shown in the diagram. This disclosure does not limit the number of network devices and terminals included in the wireless communication system.

[0092] It is further understood that the wireless communication system of this disclosure is a network providing wireless communication functionality. The wireless communication system can employ different communication technologies, such as code division multiple access (CDMA), wideband code division multiple access (WCDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency-division multiple access (OFDMA), single-carrier frequency division multiple access (SC-FDMA), and carrier sense multiple access with collision avoidance. Based on factors such as capacity, speed, and latency, networks can be categorized as 2G networks, 3G networks, 4G networks, or future evolution networks, such as 5G networks. 5G networks can also be referred to as New Radio (NR). For ease of description, this disclosure may sometimes simply refer to the wireless communication network as a network.

[0093] Furthermore, the network device involved in this disclosure can also be referred to as a wireless access network device. This wireless access network device can be: a base station, an evolved Node B (eNB), a home base station, an access point (AP) in a Wireless Fidelity (WIFI) system, a wireless relay node, a wireless backhaul node, a transmission point (TP), or a transmission and reception point (TRP), etc. It can also be a gNB in ​​an NR system, or a component or part of a base station. When it is a vehicle-to-everything (V2X) communication system, the network device can also be an in-vehicle device. It should be understood that the specific technologies and device forms used in the embodiments of this disclosure are not limited.

[0094] Furthermore, the terminal involved in this disclosure can also be referred to as a terminal device, user equipment (UE), mobile station (MS), mobile terminal (MT), etc., and is a device that provides voice and / or data connectivity to a user. For example, a terminal can be a handheld device with wireless connectivity, an in-vehicle device, etc. Currently, some examples of terminals include: smartphones (Mobile Phones), pocket personal computers (PPCs), handheld computers, personal digital assistants (PDAs), laptops, tablets, wearable devices, or in-vehicle devices, etc. In addition, when it is a vehicle-to-everything (V2X) communication system, the terminal device can also be an in-vehicle device. It should be understood that the embodiments of this disclosure do not limit the specific technology or specific device form adopted by the terminal.

[0095] In this disclosure, data transmission between network devices and terminals is based on beamforming. During beamforming data transmission, when a network device (e.g., a base station) uses multiple TRPs (multiple TRPs are also called Multi-TRPs) to send PDCCHs to a terminal, different TRPs use different beams for transmission. It should be understood that multiple PDCCH candidates use different beams, but the time-domain or frequency-domain resources corresponding to these multiple PDCCH candidates may be the same or different.

[0096] The typical value of Multi-TRP is 2. In the following embodiments, the number of PDCCH candidates sent by the terminal is sometimes 2, which is used as an example for illustration.

[0097] For different TRPs, the terminal may have multiple methods for receiving DCI signaling PDCCH candidates, such as the following:

[0098] • Method 1: Directly combine and decode the two PDCCH candidates without performing independent decoding.

[0099] • Method 2: Decode the two PDCCH candidates independently, without merging the decoding;

[0100] Method 3: Decode only one PDCCH candidate independently and then merge the decoding;

[0101] Method 4: Decode the two PDCCH candidates independently and decode them together.

[0102] Each of the various reception and decoding methods used by a terminal has its own advantages and disadvantages, and is applicable to different scenarios. Therefore, how the terminal determines the appropriate decoding method is a problem that needs to be solved.

[0103] This disclosure provides a communication method in which a terminal determines the decoding method to be used for the PDCCH based on various different decoding methods. The PDCCH carries DCI signaling. The determination of the decoding method can be implemented, for example, by dynamic indication from the base station, or by the terminal determining it according to standard specifications, thus enabling the use of different decoding methods in different scenarios.

[0104] In this embodiment of the disclosure, the decoding method used by the determined PDCCH is referred to as the first decoding method, and the various different decoding methods used to determine the first decoding method are referred to as the second decoding methods. The first decoding method is one or more of the various second decoding methods.

[0105] Figure 2 This is a flowchart illustrating a communication method according to an exemplary embodiment, such as... Figure 2 As shown, the communication method used in the terminal includes the following steps.

[0106] In step S11, the first decoding method of DCI is determined.

[0107] In this embodiment of the disclosure, DCI can be understood as DCI received on one or more PDCCH candidates using one or more beam directions.

[0108] Furthermore, the first decoding method can be determined based on a variety of different second decoding methods. For example, the first decoding method is one or more of a variety of different second decoding methods.

[0109] In the communication method provided in this disclosure, the first decoding method may include at least one of the following: independently decoding DCI received on one or more PDCCH candidates; and / or combining and decoding DCI received on one or more PDCCH candidates. Alternatively, the first decoding method may be understood to include at least one of the following: independently decoding one or more of DCI signaling received in multiple beam directions; and / or combining and decoding DCI signaling received in multiple beam directions.

[0110] Figure 3 This is a flowchart illustrating a communication method according to an exemplary embodiment, such as... Figure 3As shown, the communication method used in the terminal includes the following steps.

[0111] In step S21, the first decoding method of DCI is determined based on the first signaling.

[0112] In this embodiment of the disclosure, the first signaling may be an indication signaling sent by the network device. The terminal determines the first decoding method of DCI based on the indication signaling sent by the network device.

[0113] Furthermore, in the communication method provided in this disclosure embodiment, the first signaling is used to indicate one or more of a variety of different second decoding methods.

[0114] In a communication method provided in this disclosure, it is assumed that one or more PDCCH candidates include a first number of PDCCH candidate combinations. The number of PDCCH candidates in each PDCCH candidate combination is greater than or equal to 1, and less than or equal to the total number of the one or more PDCCH candidates. Different PDCCH candidates in each PDCCH candidate combination correspond to different beams, and different beams correspond to different TRPs. That is, the total number of PDCCH candidates in each PDCCH candidate combination corresponds to the total number of beams, which is the total number of TRPs for PDCCH transmission by the terminal. The total number is greater than or equal to 1, with a typical value of 2. The second decoding method includes: merging and decoding the DCI signaling received on the PDCCH candidate in each of the first number of PDCCH candidate combinations.

[0115] In this embodiment of the disclosure, for the case where each PDCCH candidate combination in the first number of PDCCH candidate combinations includes one PDCCH candidate, the first number of PDCCH candidate combinations is simply the first number of PDCCH candidates. Merging and decoding the DCI signaling received on the PDCCH candidates in each of the first number of PDCCH candidate combinations can be understood as independently decoding the first number of PDCCH candidates.

[0116] In this embodiment of the disclosure, when the total number of PDCCH candidates is a first number and the number of PDCCH candidate combinations is 1, if the first number is greater than 1, for example, if the first number is 2, and the PDCCH candidate combination includes the first number of PDCCH candidates, it can be understood as merging and decoding the first number of PDCCH candidates.

[0117] In this embodiment of the disclosure, when the number of PDCCH candidates in each PDCCH candidate combination is greater than or equal to 1 and less than the total number of one or more PDCCH candidates, it can be understood that some PDCCH candidate combinations contain 1 PDCCH candidate, that is, some PDCCH candidates are decoded independently; and some PDCCH candidate combinations contain more than 1 PDCCH candidate, that is, some PDCCH candidates are decoded by merging.

[0118] For ease of description, in one example, assume there are N TRPs transmitting using N beam directions, resulting in N PDCCH candidates. First, divide the N PDCCH candidates into M groups, where M is less than or equal to N. Each group contains one or more PDCCH candidates. The decoding methods for these PDCCH candidates can include the following:

[0119] a) Method 1: Directly merge and decode the N PDCCH candidates without performing independent decoding;

[0120] b) Method 2: Decode each of the N PDCCH candidates independently, without merging the decoding;

[0121] c) Method 3: Decode one or more PDCCH candidates independently and then merge and decode N PDCCH candidates;

[0122] d) Method 4: Decode N PDCCH candidates independently, and decode N PDCCH candidates together.

[0123] e) Method 5: For the combination of M PDCCH candidates, merge and decode within the combination, and merge and decode N PDCCH candidates;

[0124] f) Method 6: For M PDCCH candidate combinations, merge and decode within the combination.

[0125] It is understandable that, since each of the M PDCCH candidate combinations can contain either one PDCCH candidate or multiple PDCCH candidates, the decoding method can be allocated very flexibly.

[0126] The communication method provided in this disclosure involves multiple second decoding methods. Each decoding method can be identified, and the first decoding method can be determined based on its identifier. For example, each decoding method can be assigned a number, and the first decoding method can be determined directly based on the number. Furthermore, determining the first decoding method based on the identifier can be based on the first signaling.

[0127] The first signaling can be one or more combinations of Radio Resource Control (RRC) signaling, Medium Access Control (MAC) Control Element (CE) signaling, and DCI signaling.

[0128] For example, in the communication method provided in this embodiment, the first signaling includes MAC CE signaling. By indicating the number of the first decoding method through the MAC CE signaling, the first decoding method can be determined. The correspondence between the number and the decoding method can be indicated by RRC signaling, or specified by a standard protocol and written into the terminal chip.

[0129] In the communication method provided in this embodiment, the first signaling may include DCI signaling. By indicating the number of the first decoding method through the DCI signaling, the first decoding method can be determined. The correspondence between the number and the decoding method may be indicated by RRC signaling or specified by a standard protocol and written into the terminal chip.

[0130] Furthermore, in the communication method provided in this embodiment, the first signaling may include MAC CE signaling and RRC signaling, or DCI signaling and RRC signaling. The MAC CE signaling or DCI signaling indicates the number of the first decoding method, and the RRC signaling indicates the correspondence between the first decoding method and the second decoding method, as well as the number corresponding to each decoding method among multiple different second decoding methods.

[0131] In the communication method provided in this embodiment, the first signaling may include DCI signaling and MAC CE signaling. The MAC CE signaling indicates multiple decoding methods (a first decoding method or a second decoding method), and the DCI signaling indicates one or more of the multiple decoding methods indicated by the MAC CE signaling, used for the decoding method (first decoding method) of subsequent DCI signaling.

[0132] In the communication method provided in this embodiment, a first signaling is used to indicate a first PDCCH candidate time-frequency resource or a second PDCCH candidate time-frequency resource. The first PDCCH candidate time-frequency resource is a time-frequency resource for a PDCCH candidate used in a PDCCH transmission mode based on multiple TRPs. The second PDCCH candidate time-frequency resource is a time-frequency resource for a PDCCH candidate used in a PDCCH transmission mode based on a single TRP. The first and second PDCCH candidate time-frequency resources correspond to different decoding methods.

[0133] In one implementation, the time-frequency resources of the first PDCCH candidate correspond to a combined decoding method. The time-frequency resources of the second PDCCH candidate correspond to an independent decoding method.

[0134] In the communication method provided in this embodiment, a first signaling is used to indicate the time-frequency resources of a PDCCH candidate or a second PDCCH candidate, thereby indicating which PDCCH candidate time-frequency resources are used for transmission to multiple TRPs and which are used for transmission to a single TRP. The terminal uses an independent decoding method for the time-frequency resources of PDCCH candidates used for transmission to a single TRP, and a combined decoding method for the time-frequency resources of PDCCH candidates used for transmission to multiple TRPs.

[0135] Figure 4 This is a flowchart illustrating a communication method according to an exemplary embodiment, such as... Figure 4 As shown, the communication method used in the terminal includes the following steps.

[0136] In step S31, a first decoding method for the DCI is determined based on the first state. The first state and non-first states correspond to different decoding methods.

[0137] In this embodiment of the disclosure, the first state includes one or a combination of the following:

[0138] A) There are PDCCH candidates with poor CSI feedback values ​​in the channel state information (CSI) feedback of multiple PDCCH candidates.

[0139] A poor CSI feedback value can be understood as the CSI feedback value of a certain PDCCH candidate being worse than the CSI feedback values ​​of multiple other PDCCH candidates. For example, the difference between the CSI feedback value of a certain PDCCH candidate and the CSI feedback values ​​of one or more other PDCCH candidates is greater than a threshold. Alternatively, the CSI feedback value of a certain PDCCH candidate itself may be poor, for example, the CSI feedback value of a certain PDCCH candidate may be lower than the set CSI feedback value threshold.

[0140] B) Among the demodulation reference signals (DMRS) on multiple PDCCH candidates, there is a DMRS with poor reception performance.

[0141] Poor DMRS reception performance can be understood as the DMRS reception performance of a certain PDCCH candidate being worse than that of multiple other PDCCH candidates. For example, the difference between the DMRS reception performance of a certain PDCCH candidate and that of one or more other PDCCH candidates is greater than a threshold. Alternatively, the DMRS reception performance of a certain PDCCH candidate itself may be poor, for example, the DMRS reception performance of a certain PDCCH candidate may be lower than a set DMRS reception performance threshold.

[0142] C) The transmission configuration indication (TCI) states of multiple PDCCH candidates are indicated by independent signaling, and there is a PDCCH candidate whose TCI state indication has failed.

[0143] The TCI state indicates that one or more PDCCH candidates have succeeded. The TCI state of a PDCCH candidate can be the TCI state of the control resource set associated with the search space set corresponding to the PDCCH candidate.

[0144] D) Among the multiple PDCCH candidates, there is a PDCCH candidate corresponding to the TRP that has experienced beam failure.

[0145] The number of TRPs that do not experience beam failure can be one or more.

[0146] In the communication method provided in this embodiment, the first state and the non-first state correspond to different decoding methods.

[0147] In one implementation, the first state corresponds to an independent decoding method, and the non-first state corresponds to a merged decoding method.

[0148] The first state corresponds to an independent decoding method, and / or the second state corresponds to a combined decoding method, which is determined based on the protocol.

[0149] The communication method provided in this disclosure allows a terminal to receive DCI signaling from one or more PDCCH candidates corresponding to the PDCCH candidate with the largest CSI feedback value among the multiple PDCCH candidates, when the PDCCH candidate with the largest CSI feedback value exists. The DCI signaling from the one or more PDCCH candidates corresponding to the PDCCH candidate with the largest CSI feedback value among the received multiple PDCCH candidates is decoded using an independent decoding method.

[0150] The communication method provided in this disclosure addresses the issue of poor reception performance among multiple PDCCH candidates' DMRS. The terminal can receive DCI signaling from one or more PDCCH candidates corresponding to the DMRS with the best reception performance among the multiple PDCCH candidates. The received DCI signaling from one or more PDCCH candidates corresponding to the DMRS with the best reception performance among the multiple PDCCH candidates is decoded using an independent decoding method.

[0151] The communication method provided in this disclosure uses independent signaling to indicate the TCI state of multiple PDCCH candidates, and if there is a PDCCH candidate whose TCI state indication fails, the terminal can receive DCI signaling on the PDCCH candidate whose TCI state indication succeeds. The received DCI signaling on one or more PDCCH candidates whose TCI state indication succeeds is decoded using an independent decoding method.

[0152] The communication method provided in this disclosure allows a terminal to receive DCI signaling on the PDCCH candidate corresponding to a TRP that has experienced beam failure among multiple PDCCH candidates. The terminal can receive DCI signaling from the PDCCH candidates corresponding to TRPs that have not experienced beam failure. The received DCI signaling from one or more PDCCH candidates corresponding to TRPs that have not experienced beam failure is decoded using an independent decoding method.

[0153] In one example, various states (conditions) are configured through the protocol, and the terminal uses different decoding methods under different conditions. The configured conditions can be written into the terminal chip. For example, based on the configured conditions, the terminal can determine the decoding method and the corresponding communication method in several ways, taking the example of two TRPs using different PDCCH candidates to send DCI signaling on the PDCCH to the terminal:

[0154] a) When there is a PDCCH candidate with a very poor CSI feedback value on both PDCCH candidates corresponding to two TRPs (e.g., the difference between the CSI feedback value on one PDCCH candidate and the CSI feedback value on the other PDCCH candidate is greater than a threshold; or the CSI feedback value on one PDCCH candidate is inherently poor, for example, the CSI feedback value on one PDCCH candidate is lower than a set CSI feedback threshold), the DCI signaling sent on the PDCCH candidate with the larger CSI feedback value is received, and the DCI signaling received on the PDCCH candidate with the larger CSI feedback value is decoded using an independent decoding method. When there is no PDCCH candidate with a very poor CSI feedback value on either PDCCH candidate corresponding to two TRPs, the DCI signaling on both PDCCH candidates is received, and the DCI signaling received on both PDCCH candidates is decoded using a combined decoding method.

[0155] (b) The DMRS of the PDCCH candidates is used to determine the optimal DCI signaling. When the DMRS reception performance of one of the two PDCCH candidates is poor (e.g., below the threshold set by the other; or the difference between the DMRS reception performance of one PDCCH candidate and that of the other is greater than the threshold), the DCI signaling on the PDCCH candidate with better DMRS reception performance is received and decoded using an independent decoding method. When the DMRS reception performance of both PDCCH candidates is good, DCI signaling is received on both PDCCH candidates and the DCI signaling received on both PDCCH candidates is decoded using a combined decoding method.

[0156] c) When the TCI states corresponding to two PDCCH candidates are indicated using independent signaling, if one PDCCH candidate has a failed TCI state indication, then the DCI signaling on the PDCCH candidate with a successful TCI state indication is received, and the DCI signaling received on the PDCCH candidate with a successful TCI state indication is decoded using an independent decoding method. If no PDCCH candidate has a failed TCI state indication, then the DCI signaling on both PDCCH candidates with successful TCI state indications is received, and the DCI signaling received on both PDCCH candidates with successful TCI state indications is decoded using a combined decoding method.

[0157] d) If, among the two PDCCH candidates, there is one PDCCH candidate corresponding to a TRP that experienced beam failure, the terminal can receive DCI signaling from one PDCCH candidate corresponding to a TRP that did not experience beam failure. The received DCI signaling from one PDCCH candidate corresponding to a TRP that did not experience beam failure is decoded using an independent decoding method. If, among the two PDCCH candidates, there is no PDCCH candidate corresponding to a TRP that experienced beam failure, the terminal can receive DCI signaling from both PDCCH candidates corresponding to TRPs that did not experience beam failure. The received DCI signaling from both PDCCH candidates corresponding to TRPs that did not experience beam failure is decoded using a combined decoding method.

[0158] The communication method provided in this disclosure improves the success rate of PDCCH reception and decoding by determining the decoding method based on the condition specified by the first signaling or protocol when the network device sends PDCCH using Multi-TRP.

[0159] Based on the same concept, embodiments of this disclosure also provide a communication method applied to network devices.

[0160] Figure 5 This is a flowchart illustrating a communication method according to an exemplary embodiment, such as... Figure 5 As shown, the communication method used in network devices includes the following steps.

[0161] In step S41, the first transmission method of DCI is determined.

[0162] Here, DCI refers to DCI transmitted on one or more PDCCH candidates using one or more beam directions.

[0163] The first transmission method is to transmit DCI on one or more PDCCH candidates, where the first transmission method corresponds to the first decoding method of the terminal.

[0164] In one implementation, the first decoding method includes independently decoding DCIs transmitted on one or more PDCCH candidates, and / or combining and decoding DCIs transmitted on one or more PDCCH candidates.

[0165] In a communication method provided in this embodiment, the first sending mode corresponding to the first decoding mode can be implemented by sending a first decoding mode indication information to the terminal through a network device.

[0166] Figure 6 This is a flowchart illustrating a communication method according to an exemplary embodiment, such as... Figure 6 As shown, the communication method used in network devices includes the following steps.

[0167] In step S51, based on the first signaling, the first decoding mode indication information of DCI is sent.

[0168] It is understood that the first signaling sent by the network device in this embodiment of the present disclosure may correspond to the first signaling received by the terminal.

[0169] In one implementation, the first signaling is used to indicate one or more of a variety of different second decoding methods.

[0170] In one embodiment, one or more PDCCH candidates include a first number of PDCCH candidate combinations. The number of PDCCH candidates in each PDCCH candidate combination is greater than or equal to 1, and less than or equal to the total number of the one or more PDCCH candidates. Different PDCCH candidates in each PDCCH candidate combination correspond to different beams, and different beams correspond to different TRPs. That is, the total number of PDCCH candidates in each PDCCH candidate combination corresponds to the total number of beams, which is the total number of TRPs for PDCCH transmission by the terminal. The total number is greater than or equal to 1, with a typical value of 2. The second decoding method includes: performing combined decoding on the DCI transmitted on the PDCCH candidates in each of the first number of PDCCH candidate combinations.

[0171] In this embodiment of the disclosure, for the case where each PDCCH candidate combination in the first number of PDCCH candidate combinations includes one PDCCH candidate, the first number of PDCCH candidate combinations is simply the first number of PDCCH candidates. Merging and decoding the DCI signaling received on the PDCCH candidates in each of the first number of PDCCH candidate combinations can be understood as independently decoding the first number of PDCCH candidates.

[0172] In this embodiment of the disclosure, when the total number of PDCCH candidates is a first number and the number of PDCCH candidate combinations is 1, if the first number is greater than 1, for example, if the first number is 2, and the PDCCH candidate combination includes the first number of PDCCH candidates, it can be understood as merging and decoding the first number of PDCCH candidates.

[0173] In this embodiment of the disclosure, when the number of PDCCH candidates in each PDCCH candidate combination is greater than or equal to 1 and less than the total number of one or more PDCCH candidates, it can be understood that some PDCCH candidate combinations contain 1 PDCCH candidate, that is, some PDCCH candidates are decoded independently; and some PDCCH candidate combinations contain more than 1 PDCCH candidate, that is, some PDCCH candidates are decoded by merging.

[0174] In one implementation, the first signaling includes one or more combinations of RRC signaling, MAC CE signaling, and DCI signaling.

[0175] In the communication method provided in this embodiment, the first signaling may include DCI signaling. By indicating the number of the first decoding method through the DCI signaling, the first decoding method can be determined. The correspondence between the number and the decoding method may be indicated by RRC signaling or specified by a standard protocol and written into the terminal chip.

[0176] Furthermore, in the communication method provided in this embodiment, the first signaling may include MAC CE signaling and RRC signaling, or DCI signaling and RRC signaling. The MAC CE signaling or DCI signaling indicates the number of the first decoding method, and the RRC signaling indicates the correspondence between the first decoding method and the second decoding method, as well as the number corresponding to each decoding method among multiple different second decoding methods.

[0177] In the communication method provided in this embodiment, the first signaling may include DCI signaling and MAC CE signaling. The MAC CE signaling indicates multiple decoding methods (a first decoding method or a second decoding method), and the DCI signaling indicates one or more of the multiple decoding methods indicated by the MAC CE signaling, used for the decoding method (first decoding method) of subsequent DCI signaling.

[0178] In one implementation, the first signaling is used to indicate the time-frequency resources of the first PDCCH candidate or the time-frequency resources of the second PDCCH candidate.

[0179] The first PDCCH candidate time-frequency resource is the time-frequency resource for PDCCH candidates used in PDCCH transmission modes based on multiple Transmitter Receiver Points (TRPs). The second PDCCH candidate time-frequency resource is the time-frequency resource for PDCCH candidates used in PDCCH transmission modes based on a single Transmitter Receiver Point (TRP). The first and second PDCCH candidate time-frequency resources correspond to different decoding methods.

[0180] In one implementation, the first PDCCH candidate time-frequency resource corresponds to a combined decoding method, and the second PDCCH candidate time-frequency resource corresponds to an independent decoding method.

[0181] In one implementation, the first decoding method is determined based on a first state. The first state and non-first states correspond to different decoding methods.

[0182] In one implementation, the first state corresponds to an independent decoding method, and the non-first state corresponds to a merged decoding method.

[0183] In one implementation, the first state corresponds to an independent decoding method, and / or the second state corresponds to a combined decoding method, determined based on the protocol.

[0184] In one implementation, the first state includes one or a combination of the following:

[0185] Among multiple PDCCH candidates, there are PDCCH candidates with poor CSI feedback values. Among multiple PDCCH candidates, there is a DMRS with poor reception performance. The Transmission Control Indicator (TCI) status of multiple PDCCH candidates uses independent signaling indication, and one PDCCH candidate has failed to indicate its TCI status. Among multiple PDCCH candidates, there is a PDCCH candidate corresponding to a TRP that experienced beam failure.

[0186] The TCI status indicates that there can be one or more successful PDCCH candidates.

[0187] The number of TRPs that do not experience beam failure can be one or more.

[0188] The communication method provided in this disclosure embodiment, in response to a terminal’s first state including the presence of a PDCCH candidate with a poor CSI feedback value among multiple PDCCH candidates, the terminal can receive DCI signaling sent by the network device on one or more PDCCH candidates corresponding to the largest CSI feedback value among the multiple PDCCH candidates.

[0189] In the communication method provided in this embodiment, in response to a first state of the terminal including the presence of a DMRS with poor reception performance among multiple PDCCH candidates, the network device sends DCI signaling on the PDCCH candidate corresponding to the DMRS with the best reception performance among the multiple PDCCH candidates.

[0190] In the communication method provided in this disclosure, in response to a first state of the terminal including multiple PDCCH candidates, the Transmission Control Indicator (TCI) state is indicated using independent signaling, and there is a PDCCH candidate whose TCI state indication has failed. The network device sends DCI signaling on one or more PDCCH candidates whose TCI state indication has succeeded.

[0191] In the communication method provided in this disclosure, in response to a first state of the terminal including the presence of a PDCCH candidate corresponding to a TRP that has experienced beam failure among a plurality of PDCCH candidates, the network device sends DCI signaling on one or more PDCCH candidates corresponding to the TRPs that have not experienced beam failure.

[0192] The communication method provided in this embodiment of the present disclosure allows the network device to determine a first transmission mode of DCI, which corresponds to a first decoding mode of the terminal, thereby enabling the network device and the terminal to achieve consistency in the decoding mode of the terminal.

[0193] Based on the same concept, embodiments of this disclosure also provide a communication device.

[0194] It is understood that the communication device provided in this disclosure includes hardware structures and / or software modules corresponding to each function in order to achieve the above-mentioned functions. In conjunction with the units and algorithm steps of the various examples disclosed in this disclosure, this disclosure can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed by hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the technical solutions of this disclosure.

[0195] Figure 7 This is a block diagram illustrating a communication device according to an exemplary embodiment. (Refer to...) Figure 7 The communication device 100 is applied to a terminal and includes a receiving unit 101. Among them,

[0196] The receiving unit 101 is configured to determine the first decoding mode of the DCI.

[0197] Wherein, DCI is DCI received on one or more PDCCH candidates using one or more beam directions, and the first decoding method is one or more of a variety of different second decoding methods.

[0198] In one embodiment, the first decoding method includes at least one of the following: independently decoding DCI received on one or more PDCCH candidates; and / or merging and decoding DCI received on one or more PDCCH candidates.

[0199] In one embodiment, the receiving unit 101 determines the first decoding method of DCI based on the first signaling.

[0200] In one implementation, the first signaling is used to indicate one or more of a variety of different second decoding methods.

[0201] In one implementation, one or more PDCCH candidates include a first number of PDCCH candidate combinations. The number of PDCCH candidates in each PDCCH candidate combination is greater than or equal to 1, and less than or equal to the total number of one or more PDCCH candidates.

[0202] The second decoding method includes: performing merged decoding on the DCI received on the PDCCH candidate in each of the first number of PDCCH candidate combinations.

[0203] In one implementation, the first signaling includes one or more combinations of RRC signaling, MAC CE signaling, and DCI signaling.

[0204] In one implementation, the first signaling is used to indicate the time-frequency resources of the first PDCCH candidate or the time-frequency resources of the second PDCCH candidate.

[0205] The first PDCCH candidate time-frequency resource is the time-frequency resource for PDCCH candidates used in PDCCH transmission modes based on multiple Transmitter Receiver Points (TRPs). The second PDCCH candidate time-frequency resource is the time-frequency resource for PDCCH candidates used in PDCCH transmission modes based on a single Transmitter Receiver Point (TRP). The first and second PDCCH candidate time-frequency resources correspond to different decoding methods.

[0206] In one implementation, the first PDCCH candidate time-frequency resource corresponds to a combined decoding method, and the second PDCCH candidate time-frequency resource corresponds to an independent decoding method.

[0207] In one embodiment, the receiving unit 101 determines a first decoding method for the DCI based on a first state. The first state and non-first states correspond to different decoding methods.

[0208] In one implementation, the first state corresponds to an independent decoding method, and the non-first state corresponds to a merged decoding method.

[0209] In one implementation, the first state corresponds to an independent decoding method, and / or the second state corresponds to a combined decoding method, determined based on the protocol.

[0210] In one implementation, the first state includes one or a combination of the following:

[0211] Among multiple PDCCH candidates, there are PDCCH candidates with poor CSI feedback values. Among multiple PDCCH candidates, there are PDCCH candidates with poor DMRSI reception performance. The Transmission Control Indicator (TCI) status of multiple PDCCH candidates uses independent signaling indication, and there is a PDCCH candidate whose TCI status indication has failed. Among multiple PDCCH candidates, there is a PDCCH candidate corresponding to a TRP that has experienced beam failure.

[0212] In one embodiment, the first state includes the presence of a PDCCH candidate with a poor CSI feedback value among multiple PDCCH candidates. The receiving unit 101 is further configured to: receive DCI signaling on one or more PDCCH candidates corresponding to the largest CSI feedback value among the multiple PDCCH candidates.

[0213] In one embodiment, the first state includes the presence of a DMRS with poor reception performance among the multiple PDCCH candidates. The receiving unit 101 is further configured to: receive DCI signaling on the PDCCH candidate corresponding to the DMRS with the best reception performance among the multiple PDCCH candidates.

[0214] In one embodiment, the first state includes multiple PDCCH candidates whose TCI states are indicated by independent signaling, and there is a PDCCH candidate whose TCI state indication has failed. The receiving unit 101 is further configured to: receive DCI signaling on one or more PDCCH candidates whose TCI state indication has succeeded.

[0215] In one embodiment, the first state includes a PDCCH candidate corresponding to a TRP that has experienced beam failure among a plurality of PDCCH candidates. The receiving unit 101 is further configured to: receive DCI signaling on one or more PDCCH candidates corresponding to TRPs that have not experienced beam failure.

[0216] Figure 8 This is a block diagram illustrating a communication device according to an exemplary embodiment. (Refer to...) Figure 8 The communication device 200 is applied to network equipment and includes a transmitting unit 201. Among them,

[0217] The transmitting unit 201 is used to transmit the first decoding mode indication information of DCI.

[0218] Wherein, DCI is a DCI transmitted on one or more PDCCH candidates using one or more beam directions, and the first decoding method is one or more of a variety of different second decoding methods.

[0219] In one embodiment, the first decoding method includes at least one of the following: independently decoding DCIs transmitted on one or more PDCCH candidates; or merging and decoding DCIs transmitted on one or more PDCCH candidates.

[0220] In one embodiment, the sending unit 201 sends the first decoding mode indication information of DCI based on the first signaling.

[0221] In one implementation, the first signaling is used to indicate one or more of a variety of different second decoding methods.

[0222] In one embodiment, one or more PDCCH candidates include a first number of PDCCH candidate combinations. The number of PDCCH candidates in each PDCCH candidate combination is greater than or equal to 1, and less than or equal to the total number of one or more PDCCH candidates. The second decoding method includes: performing merged decoding on the DCI transmitted on the PDCCH candidates in each of the first number of PDCCH candidate combinations.

[0223] In one implementation, the first signaling includes one or more combinations of RRC signaling, MAC CE signaling, and DCI signaling.

[0224] In one implementation, the first signaling is used to indicate the time-frequency resources of the first PDCCH candidate or the time-frequency resources of the second PDCCH candidate.

[0225] The first PDCCH candidate time-frequency resource is the time-frequency resource for a PDCCH candidate used in a PDCCH transmission mode based on multiple Transmitter Receiver Points (TRPs), and the second PDCCH candidate time-frequency resource is the time-frequency resource for a PDCCH candidate used in a PDCCH transmission mode based on a single Transmitter Receiver Point (TRP).

[0226] The first PDCCH candidate time-frequency resource and the second PDCCH candidate time-frequency resource correspond to different decoding methods.

[0227] In one implementation, the first PDCCH candidate time-frequency resource corresponds to a combined decoding method, and the second PDCCH candidate time-frequency resource corresponds to an independent decoding method.

[0228] In one implementation, the first decoding method is determined based on a first state. The first state and non-first states correspond to different decoding methods.

[0229] In one implementation, the first state corresponds to an independent decoding method, and the non-first state corresponds to a merged decoding method.

[0230] In one implementation, the first state corresponds to an independent decoding method, and / or the second state corresponds to a combined decoding method, determined based on the protocol.

[0231] In one implementation, the first state includes one or a combination of the following:

[0232] Among multiple PDCCH candidates, there are PDCCH candidates with poor CSI feedback values. Among multiple PDCCH candidates, there is a DMRS with poor reception performance. The Transmission Control Indicator (TCI) status of multiple PDCCH candidates uses independent signaling indication, and there is a PDCCH candidate whose TCI status indication has failed. Among multiple PDCCH candidates, there is a PDCCH candidate corresponding to a TRP that has experienced beam failure.

[0233] In one embodiment, in response to a first state of the terminal including the presence of a DMRS with poor reception performance among the multiple PDCCH candidates, the transmitting unit 201 is further configured to transmit DCI signaling on one or more PDCCH candidates corresponding to the DMRS with the best reception performance among the multiple PDCCH candidates.

[0234] In one embodiment, in response to the terminal's first state including the TCI state of multiple PDCCH candidates, independent signaling is used to indicate the state, and there is a PDCCH candidate whose TCI state indication has failed. The sending unit 201 is further configured to send DCI signaling on one or more PDCCH candidates whose TCI state indication has succeeded.

[0235] In one embodiment, the first state of the terminal includes the presence of a PDCCH candidate corresponding to a TRP that has experienced beam failure among a plurality of PDCCH candidates. The transmitting unit 201 is further configured to transmit DCI signaling on one or more PDCCH candidates corresponding to TRPs that have not experienced beam failure.

[0236] Regarding the apparatus in the above embodiments, the specific manner in which each module performs its operation has been described in detail in the embodiments related to the method, and will not be elaborated upon here.

[0237] Figure 9This is a block diagram illustrating a communication device 300 according to an exemplary embodiment. For example, device 300 may be a mobile phone, computer, digital broadcasting terminal, messaging device, game console, tablet device, medical device, fitness equipment, personal digital assistant, etc.

[0238] Reference Figure 9 The device 300 may include one or more of the following components: processing component 302, memory 304, power component 306, multimedia component 308, audio component 310, input / output (I / O) interface 312, sensor component 314, and communication component 316.

[0239] Processing component 302 typically controls the overall operation of device 300, such as operations associated with display, telephone calls, data communication, camera operation, and recording. Processing component 302 may include one or more processors 320 to execute instructions to perform all or part of the steps of the methods described above. Furthermore, processing component 302 may include one or more modules to facilitate interaction between processing component 302 and other components. For example, processing component 302 may include a multimedia module to facilitate interaction between multimedia component 308 and processing component 302.

[0240] Memory 304 is configured to store various types of data to support the operation of device 300. Examples of such data include instructions for any application or method operating on device 300, contact data, phonebook data, messages, pictures, videos, etc. Memory 304 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0241] The power supply component 306 provides power to the various components of the device 300. The power supply component 306 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power to the device 300.

[0242] Multimedia component 308 includes a screen that provides an output interface between the device 300 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touchscreen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors may sense not only the boundaries of the touch or swipe action but also the duration and pressure associated with the touch or swipe operation. In some embodiments, multimedia component 308 includes a front-facing camera and / or a rear-facing camera. When the device 300 is in an operating mode, such as a shooting mode or a video mode, the front-facing camera and / or the rear-facing camera may receive external multimedia data. Each front-facing camera and rear-facing camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0243] Audio component 310 is configured to output and / or input audio signals. For example, audio component 310 includes a microphone (MIC) configured to receive external audio signals when device 300 is in an operating mode, such as call mode, recording mode, and voice recognition mode. The received audio signals may be further stored in memory 304 or transmitted via communication component 316. In some embodiments, audio component 310 also includes a speaker for outputting audio signals.

[0244] I / O interface 312 provides an interface between processing component 302 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to, home buttons, volume buttons, power buttons, and lock buttons.

[0245] Sensor assembly 314 includes one or more sensors for providing status assessments of various aspects of device 300. For example, sensor assembly 314 may detect the on / off state of device 300, the relative positioning of components such as the display and keypad of device 300, changes in the position of device 300 or a component of device 300, the presence or absence of user contact with device 300, the orientation or acceleration / deceleration of device 300, and temperature changes of device 300. Sensor assembly 314 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 314 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, sensor assembly 314 may also include an accelerometer, a gyroscope, a magnetometer, a pressure sensor, or a temperature sensor.

[0246] Communication component 316 is configured to facilitate wired or wireless communication between device 300 and other devices. Device 300 can access wireless networks based on communication standards, such as WiFi, 2G, or 3G, or combinations thereof. In one exemplary embodiment, communication component 316 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, communication component 316 also includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0247] In an exemplary embodiment, the apparatus 300 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the methods described above.

[0248] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 304 including instructions, which can be executed by a processor 320 of the device 300 to perform the above-described method. For example, the non-transitory computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device, etc.

[0249] Figure 10 This is a block diagram illustrating a communication apparatus 400 according to an exemplary embodiment. For example, apparatus 400 may be provided as a network device. (Refer to...) Figure 10 The apparatus 400 includes a processing component 422, which further includes one or more processors, and memory resources represented by memory 432 for storing instructions, such as application programs, that can be executed by the processing component 422. The application programs stored in memory 432 may include one or more modules, each corresponding to a set of instructions. Furthermore, the processing component 422 is configured to execute instructions to perform the methods described above.

[0250] Device 400 may also include a power supply component 426 configured to perform power management of device 400, a wired or wireless network interface 450 configured to connect device 400 to a network, and an input / output (I / O) interface 458. Device 400 may operate on an operating system stored in memory 432, such as Windows Server™, Mac OS X™, Unix™, Linux™, FreeBSD™, or similar.

[0251] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 432 including instructions, which can be executed by a processing component 422 of the apparatus 400 to perform the above-described method. For example, the non-transitory computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device, etc.

[0252] It can be further understood that in this disclosure, "multiple" refers to two or more, and other quantifiers are similar. "And / or" describes the relationship between related objects, indicating that three relationships can exist; for example, A and / or B can represent: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. The singular forms "a," "the," and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0253] It is further understood that the terms "first," "second," etc., are used to describe various types of information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another, and do not indicate a specific order or degree of importance. In fact, the expressions "first," "second," etc., are completely interchangeable. For example, without departing from the scope of this disclosure, first information can also be referred to as second information, and similarly, second information can also be referred to as first information.

[0254] It is further understood that although operations are described in a specific order in the accompanying drawings in the embodiments of this disclosure, this should not be construed as requiring these operations to be performed in the specific order or serial order shown, or requiring all of the shown operations to be performed to obtain the desired result. In certain environments, multitasking and parallel processing may be advantageous.

[0255] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0256] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A communication method, characterized in that, Executed by the terminal, the communication method includes: Receive a first signaling, the first signaling being used to indicate a first candidate physical downlink control channel time-frequency resource or a second candidate physical downlink control channel time-frequency resource; wherein, the first candidate physical downlink control channel time-frequency resource is a time-frequency resource for a candidate physical downlink control channel transmission mode based on multiple transmit receiver points (TRPs), and the second candidate physical downlink control channel time-frequency resource is a time-frequency resource for a candidate physical downlink control channel transmission mode based on a single transmit receiver point (TRP); Based on the first signaling, a first decoding method for downlink control information is determined, wherein the downlink control information is downlink control information received on one or more candidate physical downlink control channels using one or more beam directions; Among them, for the physical downlink control channel transmission mode of multiple transmission receiving points (TRPs), the one or more candidate physical downlink control channels include two candidate physical downlink control channels, and the first decoding mode corresponding to the time-frequency resources of the first candidate physical downlink control channel includes decoding the downlink control information received on the two candidate physical downlink control channels and the combined candidate physical downlink control channel of the two candidate physical downlink control channels; For the physical downlink control channel transmission mode of a single Transmitter Receiver Point (TRP), the first decoding mode corresponding to the time-frequency resources of the second candidate physical downlink control channel includes independently decoding the downlink control information received on the one or more candidate physical downlink control channels.

2. The communication method according to claim 1, characterized in that, The first signaling is used to indicate one or more of a variety of different second decoding methods, wherein the second decoding method is one of a variety of different decoding methods used to determine the first decoding method.

3. The communication method according to claim 1, characterized in that, The first signaling includes one or more combinations of Radio Resource Control (RRC) signaling, Media Access Control (MAC) Control Element (CE) signaling, and Downlink Control Information (DCI) signaling.

4. A communication method, characterized in that, The communication method, executed by a network device, includes: Send a first signaling message, which is used to indicate a first candidate physical downlink control channel time-frequency resource or a second candidate physical downlink control channel time-frequency resource; wherein, the first candidate physical downlink control channel time-frequency resource is a time-frequency resource for a candidate physical downlink control channel transmission mode based on multiple transmit receiver points (TRPs), and the second candidate physical downlink control channel time-frequency resource is a time-frequency resource for a candidate physical downlink control channel transmission mode based on a single transmit receiver point (TRP); The first signaling transmits a first decoding mode indication information for downlink control information, wherein the downlink control information is downlink control information received on one or more candidate physical downlink control channels using one or more beam directions; Specifically, for the physical downlink control channel transmission mode of multiple Transmission Receiver Points (TRPs), the one or more candidate physical downlink control channels include two candidate physical downlink control channels. The first decoding method corresponding to the time-frequency resources of the first candidate physical downlink control channel includes decoding the downlink control information received on the two candidate physical downlink control channels and the combined candidate physical downlink control channel of the two candidate physical downlink control channels. For the physical downlink control channel transmission mode of a single Transmission Receiver Point (TRP), the first decoding method corresponding to the time-frequency resources of the second candidate physical downlink control channel includes independently decoding the downlink control information received on the one or more candidate physical downlink control channels.

5. The communication method according to claim 4, characterized in that, The first signaling is used to indicate one or more of a variety of different second decoding methods, wherein the second decoding method is one of a variety of different decoding methods used to determine the first decoding method.

6. The communication method according to claim 4, characterized in that, The first signaling includes one or more combinations of Radio Resource Control (RRC) signaling, Media Access Control (MAC) Control Element (CE) signaling, and Downlink Control Information (DCI) signaling.

7. A communication device, characterized in that, The communication device includes: The receiving unit is configured to receive a first signaling, the first signaling being used to indicate a first candidate physical downlink control channel time-frequency resource or a second candidate physical downlink control channel time-frequency resource; wherein, the first candidate physical downlink control channel time-frequency resource is a time-frequency resource for a candidate physical downlink control channel transmission mode based on multiple transmission receiver points (TRPs), and the second candidate physical downlink control channel time-frequency resource is a time-frequency resource for a candidate physical downlink control channel transmission mode based on a single transmission receiver point (TRP); The determining unit is configured to determine a first decoding method for downlink control information based on the first signaling, wherein the downlink control information is downlink control information received on one or more candidate physical downlink control channels using one or more beam directions; Specifically, for the physical downlink control channel transmission mode of multiple Transmission Receiver Points (TRPs), the one or more candidate physical downlink control channels include two candidate physical downlink control channels. The first decoding method corresponding to the time-frequency resources of the first candidate physical downlink control channel includes decoding the downlink control information received on the two candidate physical downlink control channels and the combined candidate physical downlink control channel of the two candidate physical downlink control channels. For the physical downlink control channel transmission mode of a single Transmission Receiver Point (TRP), the first decoding method corresponding to the time-frequency resources of the second candidate physical downlink control channel includes independently decoding the downlink control information received on the one or more candidate physical downlink control channels.

8. A communication device, characterized in that, The communication device includes: The transmitting unit is configured to transmit a first signaling, wherein the first signaling is configured to indicate a first candidate physical downlink control channel time-frequency resource or a second candidate physical downlink control channel time-frequency resource; wherein the first candidate physical downlink control channel time-frequency resource is a time-frequency resource for a candidate physical downlink control channel transmission mode based on multiple transmit receiver points (TRPs), and the second candidate physical downlink control channel time-frequency resource is a time-frequency resource for a candidate physical downlink control channel transmission mode based on a single transmit receiver point (TRP). The transmitting unit is further configured to transmit a first decoding mode indication information for downlink control information via the first signaling, wherein the downlink control information is downlink control information received on one or more candidate physical downlink control channels using one or more beam directions; Specifically, for the physical downlink control channel transmission mode of multiple Transmission Receiver Points (TRPs), the one or more candidate physical downlink control channels include two candidate physical downlink control channels. The first decoding method corresponding to the time-frequency resources of the first candidate physical downlink control channel includes decoding the downlink control information received on the two candidate physical downlink control channels and the combined candidate physical downlink control channel of the two candidate physical downlink control channels. For the physical downlink control channel transmission mode of a single Transmission Receiver Point (TRP), the first decoding method corresponding to the time-frequency resources of the second candidate physical downlink control channel includes independently decoding the downlink control information received on the one or more candidate physical downlink control channels.

9. A communication device, characterized in that, include: processor; Memory used to store processor-executable instructions; The processor is configured to execute the communication method according to any one of claims 1 to 3.

10. A communication device, characterized in that, include: processor; Memory used to store processor-executable instructions; The processor is configured to execute the communication method according to any one of claims 4 to 6.

11. A non-transitory computer-readable storage medium, characterized in that, When the instructions in the storage medium are executed by the processor of the mobile terminal, the mobile terminal is able to perform the communication method according to any one of claims 1 to 3.

12. A non-transitory computer-readable storage medium, characterized in that, When the instructions in the storage medium are executed by the processor of the network device, the network device is able to perform the communication method according to any one of claims 4 to 6.

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