Method and device for determining spatial relationship information

Abstract

The present application proposes a method and device for determining spatial relationship information. The method includes: when a first preset condition is met, the first communication node determines the spatial relationship information of an uplink signal or channel according to a downlink signal or a signal associated with the channel. The present application can reduce redundant indications of spatial relationship information and save signaling overhead.

Description

Technical Field

[0001] The present application relates to the field of communications, and in particular to a method and device for determining spatial relationship information. Background Art

[0002] In the existing beam management, the beam selection of downlink or uplink channels or signals has great flexibility, and the beam indication of each physical channel or signal (such as physical downlink control channel (PDCCH, Physical Downlink Control Channel), physical layer downlink shared channel (PDSCH, Physical Downlink Shared Channel), sounding reference signal (SRS, Sounding Reference Signal), physical uplink control channel (PUCCH, Physical Uplink Control Channel)) is independently configured. For example, for the beam indication of PDCCH, the base station indicates (or activates) a transmission control indication (TCI, Transmission control indicator) state through an activation command, such as a media access control layer control element (MAC-CE, Media Access Control-Control Element) signaling, and the TCI state includes a D-type quasi co-located (QCL-Type D, Quasi Co-Located Type D) downlink reference signal; for PUCCH, the base station indicates a spatial relationship information through a MAC-CE signaling, and the spatial relationship information includes an uplink or downlink reference signal. However, this beam indication method may result in excessive signaling (such as MAC-CE signaling) overhead. In the case of uplink and downlink channel mutual benefit, the base station may configure the same downlink reference signal for the TCI state (QCL-Type D) and the spatial relationship information. For example, the base station activates a TCI state for the PDCCH through a MAC-CE signaling, and the TCI state includes a QCL-Type D downlink reference signal, and the base station indicates a spatial relationship information with the same downlink reference signal for the PUCCH through a MAC-CE signaling, which is obviously redundant. There is currently no effective solution to the problem of excessive signaling overhead caused by redundant indication of spatial relationship information. Summary of the invention

[0003] In order to solve at least one of the above technical problems, the embodiments of the present application provide the following solution.

[0004] The present application provides a method for determining spatial relationship information, including:

[0005] When the first preset condition is met, the first communication node determines the spatial relationship information of the uplink signal or the channel according to the downlink signal or the channel-associated signal.

[0006] The present application provides a method for determining spatial relationship information, including:

[0007] When the first preset condition is met, the second communication node determines the spatial relationship information of the uplink signal or channel according to the signal associated with the downlink signal or channel; wherein the downlink signal or channel is the downlink signal or channel received by the first communication node;

[0008] The second communication node receives an uplink signal or channel sent by the first communication node.

[0009] An embodiment of the present application provides a method for determining a path loss reference signal, including:

[0010] When the second preset condition is met, the first communication node determines the path loss reference signal according to the reference signal associated with the CORESET with the smallest CORESET ID in the uplink signal or the channel in the latest time slot.

[0011] The present application embodiment provides a device for determining spatial relationship information, including:

[0012] The first determination module is used to determine the spatial relationship information of the uplink signal or the channel according to the downlink signal or the channel-associated signal when a first preset condition is met.

[0013] The present application embodiment provides a device for determining spatial relationship information, including:

[0014] A second determination module is used to determine the spatial relationship information of the uplink signal or channel according to the signal associated with the downlink signal or channel when the first preset condition is met; wherein the downlink signal or channel is a downlink signal or channel received by the first communication node;

[0015] A receiving module is used to receive an uplink signal or channel sent by the first communication node.

[0016] An embodiment of the present application provides a device for determining a path loss reference signal, including:

[0017] The third determination module is used to determine the path loss reference signal according to the reference signal associated with the CORESET with the smallest CORESET ID in the uplink signal or the channel in the latest time slot when the second preset condition is met.

[0018] An embodiment of the present application provides a base station, including: a processor and a memory;

[0019] The memory is used to store instructions;

[0020] The processor is configured to read the instruction to execute the second method for determining spatial relationship information.

[0021] An embodiment of the present application provides a user equipment (UE), including: a processor and a memory;

[0022] The memory is used to store instructions;

[0023] The processor is configured to read the instruction to execute the above-mentioned first method for determining spatial relationship information or the above-mentioned method for determining the path loss reference signal.

[0024] An embodiment of the present application provides a communication network, including the above-mentioned base station and UE.

[0025] An embodiment of the present application provides a storage medium, characterized in that the storage medium stores a computer program, and when the computer program is executed by a processor, any of the above-mentioned methods is implemented.

[0026] The beam determination method provided in the embodiment of the present application determines the spatial relationship information of the uplink signal or channel based on the signal associated with the downlink reference signal or channel, thereby reducing redundant indications of the spatial relationship information and thus saving signaling overhead. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of a method for determining spatial relationship information according to an embodiment of the present application Figure 1 ;

[0028] Figure 2 A schematic diagram of a method for determining spatial relationship information according to an embodiment of the present application Figure 2 ;

[0029] Figure 3 A schematic diagram of a method for determining a path loss reference signal according to an embodiment of the present application;

[0030] Figure 4 This is a schematic diagram of Embodiment 1 of the present application;

[0031] Figure 5 This is a schematic diagram of Embodiment 2 of the present application;

[0032] Figure 6 This is a schematic diagram of Embodiment 3 of the present application;

[0033] Figure 7 This is a schematic diagram of the fourth embodiment of the present application;

[0034] Figure 8This is a schematic diagram of Embodiment 5 of the present application;

[0035] Fig. 9 This is a schematic diagram of Embodiment 6 of the present application;

[0036] Fig.10 A schematic diagram of the structure of a device for determining spatial relationship information according to an embodiment of the present application;

[0037] Fig.11 A schematic diagram of the base station structure of an embodiment of the present application;

[0038] Fig.12 This is a schematic diagram of the UE structure of an embodiment of the present application;

[0039] Fig.13 A schematic diagram of the communication system structure of an embodiment of the present application. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the present application more clear, the embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other arbitrarily without conflict.

[0041] The present application embodiment proposes a method for determining spatial relationship information, such as Figure 1 A schematic diagram of a method for determining spatial relationship information according to an embodiment of the present application Figure 1 ,include:

[0042] Step S11: When a first preset condition is met, the first communication node determines spatial relationship information of an uplink signal or a channel according to a downlink signal or a signal associated with the channel.

[0043] In one implementation, the first communication node determines the spatial relationship information of the uplink signal or the channel according to the downlink signal or the channel-associated signal, including:

[0044] The first communication node determines a first reference signal based on a reference signal associated with a control resource set (CORESET) having a minimum control resource set identifier (CORESET ID, Control Resource Set Id) in a recent time slot of the uplink signal or channel; wherein the first reference signal is a reference signal for providing a spatial filter for the uplink signal or channel.

[0045] In one implementation, the first communication node determines the first reference signal according to a quasi-co-site reference signal of a first quasi-co-site type associated with the CORESET;

[0046] There is a corresponding relationship between the serving cell where the CORESET is located and the serving cell where the uplink signal or channel is located.

[0047] In one embodiment, the CORESET belongs to a first CORESET group;

[0048] The uplink signal or channel belongs to a first uplink signal or channel group;

[0049] Among them, the first CORESET group and the first uplink signal or channel group have a corresponding relationship.

[0050] In one implementation, the first communication node determines the spatial relationship information of the uplink signal or the channel according to the downlink signal or the channel-associated signal, including:

[0051] The first communication node determines a second reference signal according to a first type of downlink signal or a channel-associated signal; wherein the second reference signal is a reference signal for providing the uplink signal or a channel spatial filter.

[0052] In one implementation, the first type of downlink signal or channel satisfies at least one of the following characteristics:

[0053] The first type of downlink signal or channel belongs to a first type of downlink signal or channel set; wherein the downlink signals or channels in the first type of downlink signal or channel set have the same starting position;

[0054] The first type of downlink signal or channel belongs to a first type of downlink signal or channel set; wherein the downlink signals or channels in the first type of downlink signal or channel set have the same end position;

[0055] The ID of the first type of downlink signal or channel is the largest;

[0056] The first type of downlink signal or channel is closest to the uplink reference signal or channel;

[0057] The aggregation level value of the first type of downlink channel is the largest; wherein the first type of downlink channel includes a downlink control channel;

[0058] The modulation and coding scheme (MCS) index value associated with the demodulation reference signal (DM-RS) of the first type of downlink channel is the largest; wherein the first type of downlink channel includes a downlink data channel;

[0059] The first type of downlink channel is a downlink channel corresponding to a Hybrid Automatic Repeat Request (HARQ)-Acknowledgement (ACK) bit group at a predetermined position in a Hybrid Automatic Repeat Request (HARQ)-Acknowledgement (ACK) bit group set included in the uplink channel; wherein one HARQ-ACK bit group corresponds to one downlink channel;

[0060] The first type of downlink channel includes a first signaling; wherein the first signaling is used to activate the uplink signal or channel;

[0061] The first type of downlink channel includes a second signaling; wherein the second signaling is used to schedule the uplink signal or channel.

[0062] In one implementation, the first communication node determines the spatial relationship information of the uplink signal or the channel according to the downlink signal or the channel-associated signal, including:

[0063] The first communication node determines the path loss reference signal according to the reference signal associated with the control resource set CORESET having the smallest control resource set identifier CORESET ID in the latest time slot of the uplink signal or channel.

[0064] In one implementation, the first communications node determines a path loss reference signal according to a quasi-co-location reference signal of a first quasi-co-location type associated with the CORESET.

[0065] In one implementation, the downlink signal or the channel-associated signal satisfies at least one of the following characteristics:

[0066] The signal associated with the downlink signal includes at least one of the following: the downlink signal, a quasi-co-site reference signal of the downlink signal;

[0067] The signal associated with the downlink channel includes at least one of the following: a DM-RS of the downlink channel, and a quasi-co-site reference signal of the DM-RS of the downlink channel.

[0068] In one embodiment, the quasi-co-site reference signal is a source reference signal configured in the first quasi-co-site type of the transmission configuration indicating the TCI state indicated by the second communication node for receiving the downlink signal or channel.

[0069] In one embodiment, the first preset condition includes at least one of the following:

[0070] The uplink signal or channel is not configured with spatial relationship information.

[0071] The first communication node receives third signaling information, wherein the third signaling information includes indication information indicating that spatial relationship information of the uplink signal or channel is determined according to a signal associated with the downlink signal or channel.

[0072] The present application also provides a method for determining spatial relationship information. Figure 2 A schematic diagram of a method for determining spatial relationship information according to an embodiment of the present application Figure 2 ,include:

[0073] Step S21: When a first preset condition is met, the second communication node determines spatial relationship information of an uplink signal or channel according to a signal associated with the downlink signal or channel; wherein the downlink signal or channel is a downlink signal or channel received by the first communication node;

[0074] Step S22: The second communication node receives an uplink signal or channel sent by the first communication node.

[0075] In one implementation, the second communication node determines the spatial relationship information of the uplink signal or the channel according to the downlink signal or the channel-associated signal, including:

[0076] The second communication node determines a third reference signal based on a reference signal associated with a control resource set CORESET having a minimum control resource set identifier CORESET ID in a recent time slot of the uplink signal or channel; wherein the third reference signal is a reference signal for providing a spatial filter for the uplink signal or channel.

[0077] In one implementation, the second communication node determines a third reference signal according to a quasi-co-location reference signal of a first quasi-co-location type associated with the CORESET;

[0078] There is a corresponding relationship between the serving cell where the CORESET is located and the serving cell where the uplink signal or channel is located.

[0079] In one embodiment, the CORESET belongs to a first CORESET group;

[0080] The uplink signal or channel belongs to a first uplink signal or channel group;

[0081] Among them, the first CORESET group and the first uplink signal or channel group have a corresponding relationship.

[0082] In one implementation, the second communication node determines the spatial relationship information of the uplink signal or the channel according to the downlink signal or the channel-associated signal, including:

[0083] The second communication node determines a fourth reference signal according to the first type of downlink signal or a channel-associated signal; wherein the fourth reference signal is a reference signal for providing the uplink signal or a channel spatial filter.

[0084] In one implementation, the first type of downlink signal or channel satisfies at least one of the following characteristics:

[0085] The first type of downlink signal or channel belongs to a first type of downlink signal or channel set; wherein the downlink signals or channels in the first type of downlink signal or channel set have the same starting position;

[0086] The first type of downlink signal or channel belongs to a first type of downlink signal or channel set; wherein the downlink signals or channels in the first type of downlink signal or channel set have the same end position;

[0087] The ID of the first type of downlink signal or channel is the largest;

[0088] The first type of downlink signal or channel is closest to the uplink reference signal or channel;

[0089] The aggregation level value of the first type of downlink channel is the largest; wherein the first type of downlink channel includes a downlink control channel;

[0090] The MCS index value associated with the DM-RS of the first type of downlink channel is the largest; wherein the first type of downlink channel includes a downlink data channel;

[0091] The first type of downlink channel is a downlink channel corresponding to a HARQ-ACK bit group at a predetermined position in a HARQ-ACK bit group set included in the uplink channel; wherein one HARQ-ACK bit group corresponds to one downlink channel;

[0092] The first type of downlink channel includes a first signaling; wherein the first signaling is used to activate the uplink signal or channel;

[0093] The first type of downlink channel includes a second signaling; wherein the second signaling is used to schedule the uplink signal or channel.

[0094] In one implementation, the downlink signal or the channel-associated signal satisfies at least one of the following characteristics:

[0095] The signal associated with the downlink signal includes at least one of the following: the downlink signal, a quasi-co-site reference signal of the downlink signal;

[0096] The signal associated with the downlink channel includes at least one of the following: a DM-RS of the downlink channel, and a quasi-co-site reference signal of the DM-RS of the downlink channel.

[0097] In one embodiment, the quasi-co-site reference signal is a source reference signal configured in the first quasi-co-site type of the TCI state indicated by the second communication node for receiving the downlink signal or channel.

[0098] In one embodiment, the first preset condition includes at least one of the following:

[0099] The uplink signal or channel is not configured with spatial relationship information;

[0100] The first communication node receives third signaling information, wherein the third signaling information includes indication information indicating that spatial relationship information of the uplink signal or channel is determined according to a signal associated with the downlink signal or channel.

[0101] The present application also provides a method for determining a path loss reference signal. Figure 3 A schematic diagram of a method for determining a path loss reference signal according to an embodiment of the present application is provided, including:

[0102] Step S31: When the second preset condition is met, the first communication node determines a path loss reference signal according to an uplink signal or a reference signal associated with a CORESET with a minimum CORESET ID in a recent time slot of a channel.

[0103] In one implementation, the first communication node determines the path loss reference signal according to a quasi-co-location reference signal of a first quasi-co-location type associated with the CORESET;

[0104] There is a corresponding relationship between the serving cell where the CORESET is located and the serving cell where the uplink signal or channel is located.

[0105] In one embodiment, the CORESET belongs to a second CORESET group;

[0106] The uplink signal or channel belongs to a second uplink signal or channel group;

[0107] Among them, the second CORESET group and the second uplink signal or channel group have a corresponding relationship.

[0108] In one embodiment, the second preset condition includes:

[0109] The uplink signal or channel is not configured with spatial relationship information;

[0110] The first communication node receives fourth signaling information, wherein the fourth signaling information includes indication information indicating that spatial relationship information of the uplink signal or channel is determined according to a signal associated with the downlink signal or channel.

[0111] The first communication node mentioned in this application may refer to a UE, and the second communication node may refer to a base station;

[0112] The first QCL type mentioned in the present application may be QCL-Type D. Specifically, QCL-Type D indicates that the target downlink signal and the channel have the same receiving spatial parameters as the source reference signal;

[0113] The spatial relationship information mentioned in the present application refers to a spatial filter. In addition, in the following embodiments 10 to 11, the spatial relationship information includes a path loss reference signal.

[0114] Embodiments 1 to 9 of the present application propose a method for determining PUCCH spatial relationship information, which is also applicable to determining SRS spatial relationship information.

[0115] Embodiment 1: A method for determining PUCCH spatial relationship information

[0116] At a given time (slot n), it is assumed that the UE has a PUCCH to be transmitted on serving cell 1; there are CORESET 1 and CORESET 2 on slot n; wherein, the CORESET ID corresponding to CORESET 1 is 1, and the CORESETID corresponding to CORESET 2 is 2; the source reference signals configured in the QCL-Type D of the TCI states indicated by CORESET 1 and CORESET2 respectively received by the base station for the UE are CSI-RS 1 and CSI-RS 2 respectively, in other words, CORESET 1 and CSI-RS 1 have the same receiving beam, and CORESET2 and CSI-RS 2 have the same receiving beam; if the first preset condition is met, the UE can determine the first reference signal according to the source reference signal configured in the QCL-Type D of the TCI state of the CORESET with the minimum control resource set identifier CORESET ID in the nearest slot of the PUCCH; wherein the first reference signal refers to the reference signal providing a spatial filter for the PUCCH; then the UE can determine the first reference signal according to the CSI-RS 1 to determine the first reference signal, that is, the transmit beam of the PUCCH is the same as the receive beam of CSI-RS1, such as Figure 4 shown.

[0117] Furthermore, the first preset condition includes at least one of the following:

[0118] The PUCCH is not configured with spatial relation information;

[0119] The UE receives first signaling information, wherein the first signaling information includes indication information indicating that spatial relationship information of an uplink signal or a channel is determined according to a signal associated with a downlink signal or a channel.

[0120] Embodiment 2: A method for determining PUCCH spatial relationship information

[0121] Assume that the UE receives PDCCH 1, PDCCH 2, and PDCCH 3 sent by the base station on serving cell 1, serving cell 2, and serving cell 3, respectively; wherein the starting position or the ending position of PDCCH 1, PDCCH 2, and PDCCH 3 in the time domain is the same; the source reference signals configured in QCL-Type D of the TCI states indicated by PDCCH 1, PDCCH 2, and PDCCH 3 received by the base station for the UE are CSI-RS 1, CSI-RS 2, and CSI-RS 3, respectively; at a given moment, the UE has PUCCH 1 to be transmitted on serving cell 1, and its starting position is after the starting positions of PDCCH 1, PDCCH 2, and PDCCH 3; if the first preset condition is met, the UE can determine the first reference signal according to the source reference signal configured in QCL-Type D of the TCI state of the first type of PDCCH; wherein the first reference signal refers to a reference signal for providing a spatial filter for the PUCCH 1;

[0122] Furthermore, the first preset condition includes at least one of the following:

[0123] The PUCCH is not configured with spatial relation information;

[0124] The UE receives first signaling information, wherein the first signaling information includes indication information indicating that spatial relationship information of an uplink signal or a channel is determined according to a signal associated with a downlink signal or a channel;

[0125] Furthermore, the first type of PDCCH meets the following characteristics:

[0126] The first type of PDCCH belongs to a first type of PDCCH set; wherein the first type of PDCCHs in the first type of PDCCH set have the same time domain starting or ending position;

[0127] The cell ID corresponding to the first type of PDCCH in the first type of PDCCH set is the largest;

[0128] Therefore, in this embodiment, PDCCH 1, PDCCH 2 and PDCCH 3 all belong to the first type of PDCCH set, and the first type of PDCCH is PDCCH 3; then the UE can determine the first reference signal according to the source reference signal (CSI-RS 3) configured in the QCL-Type D of the TCI state of PDCCH 3, that is, the transmit beam of PUCCH 1 is the same as the receive beam of CSI-RS 3, such as Figure 5 shown.

[0129] In this embodiment, PDCCH, first type PDCCH, and first type PDCCH set may be replaced by PDSCH, first type PDSCH, and first type PDSCH set.

[0130] Embodiment 3: A method for determining PUCCH spatial relationship information

[0131] Assume that the UE receives PDCCH 1, PDCCH 2, and PDCCH 3 sent by the base station on serving cell 1, serving cell 2, and serving cell 3, respectively; wherein the source reference signals configured in QCL-Type D of the TCI states indicated by PDCCH 1, PDCCH 2, and PDCCH 3 received by the base station for the UE are CSI-RS1, CSI-RS 2, and CSI-RS 3, respectively; at a given moment, the UE has PUCCH 1 to be transmitted on serving cell 1, and its time domain starting position is after the starting positions of PDCCH 1, PDCCH 2, and PDCCH 3; compared with PDCCH 1 and PDCCH 2, the position of PDCCH 3 in the time domain is closest to the starting position of PUCCH 1; if the first preset condition is met, the UE can determine the first reference signal according to the source reference signal configured in QCL-Type D of the TCI state of the first type of PDCCH; wherein the first reference signal refers to a reference signal for providing a spatial filter for the PUCCH 1;

[0132] Furthermore, the first preset condition includes at least one of the following:

[0133] The PUCCH is not configured with spatial relation information;

[0134] The UE receives first signaling information, wherein the first signaling information includes indication information indicating that spatial relationship information of an uplink signal or a channel is determined according to a signal associated with a downlink signal or a channel;

[0135] Further, the first type of PDCCH may be the PDCCH closest to PUCCH 1;

[0136] Therefore, the UE can determine the first reference signal according to the source reference signal (CSI-RS3) configured in the QCL-Type D of the TCI state of PDCCH 3, that is, the transmit beam of PUCCH 1 is the same as the receive beam of CSI-RS 3, such as Figure 6 shown.

[0137] In this embodiment, the PDCCH may be replaced by the PDSCH.

[0138] Embodiment 4: A method for determining PUCCH spatial relationship information

[0139] Assume that the UE receives PDCCH 1, PDCCH 2, and PDCCH 3 sent by the base station in serving cell 1, serving cell 2, and serving cell 3, respectively; wherein, the starting position or ending position of PDCCH 1, PDCCH 2, and PDCCH 3 in the time domain is the same; the aggregation level of PDCCH 1 is 2, the aggregation level of PDCCH 2 is 4, and the aggregation level of PDCCH 3 is 6, and the aggregation level N means that the CORESET corresponding to the PDCCH consists of N consecutive control channel elements (Control Channel Elements, CCE); the source reference signals configured in QCL-Type D of the TCI state indicated by PDCCH 1, PDCCH 2, and PDCCH 3 received by the base station for the UE are CSI-RS 1, CSI-RS 2, and CSI-RS 3, respectively; at a given moment, the UE has a PUCCH to be transmitted in serving cell 1, and its time domain starting position is between PDCCH 1, PDCCH 2, and PDCCH 3. 3 after the starting position; if the first preset condition is met, the UE may determine the first reference signal according to the source reference signal configured in the QCL-Type D of the TCI state of the first type of PDCCH; wherein the first reference signal refers to the reference signal for providing a spatial filter for the PUCCH 1;

[0140] Furthermore, the first preset condition includes at least one of the following:

[0141] The PUCCH is not configured with spatial relation information;

[0142] The UE receives first signaling information, wherein the first signaling information includes indication information indicating that spatial relationship information of an uplink signal or a channel is determined according to a signal associated with a downlink signal or a channel;

[0143] Furthermore, the first type of PDCCH meets the following characteristics:

[0144] The first type of PDCCH belongs to a first type of PDCCH set; wherein the first type of PDCCHs in the first type of PDCCH set have the same time domain starting or ending position;

[0145] The aggregation level of the first type of PDCCH in the first type of PDCCH set is the largest;

[0146] Therefore, in this embodiment, PDCCH 1, PDCCH 2 and PDCCH 3 all belong to the first type of PDCCH set, and the first type of PDCCH is PDCCH 3; then the UE can determine the first reference signal according to the source reference signal (CSI-RS 3) configured in the QCL-Type D of the TCI state of PDCCH 3, that is, the transmit beam of PUCCH 1 is the same as the receive beam of CSI-RS 3, such as Figure 7 shown.

[0147] Embodiment 5: A method for determining PUCCH spatial relationship information

[0148] Assume that the UE receives PDSCH 1, PDSCH 2, and PDSCH 3 sent by the base station in service cell 1, service cell 2, and service cell 3, respectively; wherein, the coding and modulation mode MCS index corresponding to the demodulation reference signal DM-RS 1 of PDSCH 1 is 1, the coding and modulation mode MCS index corresponding to the demodulation reference signal DM-RS 2 of PDSCH 2 is 2, and the coding and modulation mode MCS index corresponding to the demodulation reference signal DM-RS 3 of PDSCH 3 is 3; the source reference signals configured in QCL-Type D of the TCI state indicated by the demodulation reference signal DM-RS 1 of PDSCH 1, the demodulation reference signal DM-RS 2 of PDSCH 2, and the demodulation reference signal DM-RS 3 of PDSCH 3 received by the base station for the UE are CSI-RS 1, CSI-RS 2, and CSI-RS 3, respectively; at a given moment, the UE has PUCCH 1 to be transmitted in service cell 1, and its time domain starting position is between PDSCH 1, PDSCH 2. After the starting position of PDSCH 3, and PUCCH 1 is at the same end position as PDSCH 1, PDSCH 2, and PDSCH 3; if the first preset condition is met, the UE can use the first reference signal according to the source reference signal configured in the QCL-Type D of the TCI state of the demodulation reference signal DM-RS of the first type of PDSCH; wherein the first reference signal refers to the reference signal for providing a spatial filter for the PUCCH 1;

[0149] Furthermore, the first preset condition includes at least one of the following:

[0150] The PUCCH is not configured with spatial relation information;

[0151] The UE receives first signaling information, wherein the first signaling information includes indication information indicating that spatial relationship information of an uplink signal or a channel is determined according to a signal associated with a downlink signal or a channel;

[0152] Furthermore, the first type of PDSCH meets the following characteristics:

[0153] The first type of PDSCH belongs to the first type of PDSCH set; wherein the time domain distance between the first type of PDSCH and PUCCH 1 in the first type of PDSCH set is the same; wherein the time domain distance refers to the time domain symbol length between the time domain end position of the first type of PDSCH and the time domain start position of PUCCH 1;

[0154] The MCS index value corresponding to the demodulation reference signal DM-RS of the first type of PDSCH in the first type of PDSCH set is the largest;

[0155] Therefore, in this embodiment, PDSCH 1, PDSCH 2 and PDSCH 3 all belong to the first type of PDSCH set, and the first type of PDSCH is PDSCH 3; then the UE can determine the first reference signal according to the source reference signal (CSI-RS 3) configured in the QCL-Type D of the TCI state of PDSCH 3, that is, the transmit beam of PUCCH 1 is the same as the receive beam of CSI-RS 3, such as Figure 8 shown.

[0156] Embodiment 6: A method for determining PUCCH spatial relationship information

[0157] Assume that the UE receives PDSCH 1, PDSCH 2, and PDSCH 3 sent by the base station in serving cell 1, serving cell 2, and serving cell 3, respectively; wherein the source reference signals configured in QCL-Type D of the TCI state indicated by DM-RS 1 of PDSCH 1, DM-RS 2 of PDSCH 2, and DM-RS 3 of PDSCH 3 received by the base station for the UE are CSI-RS 1, CSI-RS 2, and CSI-RS 3, respectively; at a given moment, the UE has PUCCH 1 to be transmitted in serving cell 1; the PUCCH 1 includes HARQ-ACK information, wherein the HARQ-ACK information is used to indicate whether the UE requires the base station to retransmit data. For example, when the decoding fails, the UE will request the base station to retransmit the data by sending HARQ-ACK information; in this embodiment, the HARQ-ACK information (or HARQ-ACK bit group set) includes 3 HARQ-ACK bit groups, which are HARQ-ACK bit group 1, HARQ-ACK bit group 2 and HARQ-ACK bit group 3 in order of time domain; wherein, HARQ-ACK bit group 1 is used to indicate whether PDSCH 1 is retransmitted (that is, HARQ-ACK bit group 1 corresponds to PDSCH 1), HARQ-ACK bit group 2 is used to indicate whether PDSCH 2 is retransmitted (that is, HARQ-ACK bit group 2 corresponds to PDSCH 2), and HARQ-ACK bit group 3 is used to indicate whether PDSCH 3 is retransmitted (that is, HARQ-ACK bit group 3 corresponds to PDSCH 3); If the first preset condition is met, the UE may determine the first reference signal according to the source reference signal configured in the QCL-Type D of the TCI state of the DM-RS of the first type of PDSCH; wherein the first reference signal refers to the reference signal for providing a spatial filter for the PUCCH1;

[0158] Furthermore, the first preset condition includes at least one of the following:

[0159] The PUCCH is not configured with spatial relation information;

[0160] The UE receives first signaling information, wherein the first signaling information includes indication information indicating that spatial relationship information of an uplink signal or a channel is determined according to a signal associated with a downlink signal or a channel;

[0161] Further, the first type of PDSCH is a downlink channel corresponding to a HARQ-ACK bit group at a predetermined position in a HARQ-ACK bit group set; further, the predetermined position may be the last HARQ-ACK bit group at a time domain position;

[0162] Therefore, in this embodiment, the first type of PDSCH is PDSCH 3; the UE can determine the first reference signal according to the source reference signal (CSI-RS 3) configured in QCL-Type D of the TCI state of DM-RS 3 of PDSCH3, that is, the transmit beam of PUCCH 1 is the same as the receive beam of CSI-RS 3, such as Fig. 9 shown.

[0163] Embodiment 7: A method for determining PUCCH spatial relationship information

[0164] At a given moment, it is assumed that the UE receives PDCCH 1 sent by the base station on the serving cell 1; wherein a second signaling information (such as downlink control information DCI) is carried on the PDCCH 1, wherein the second signaling information is used to schedule a PUCCH 1 transmission; the base station receives the source reference signal configured in the QCL-Type D of the TCI state indicated by the PDCCH 1 for the UE as CSI-RS1; if the first preset condition is met, the UE can determine the first reference signal according to the source reference signal configured in the QCL-Type D of the TCI state of the first type of PDCCH; wherein the first reference signal refers to a reference signal for providing a spatial filter for the PUCCH 1;

[0165] Furthermore, the first preset condition includes at least one of the following:

[0166] The PUCCH is not configured with spatial relation information;

[0167] The UE receives first signaling information, wherein the first signaling information includes indication information indicating that spatial relationship information of an uplink signal or a channel is determined according to a signal associated with a downlink signal or a channel;

[0168] Further, the first type of PDCCH includes second signaling information, wherein the second signaling is used to schedule PUCCH 1:

[0169] Therefore, in this embodiment, the first type of PDCCH is PDCCH 1; the UE can determine the first reference signal according to the source reference signal (CSI-RS 1) configured in QCL-Type D of the TCI state of PDCCH1, that is, the transmit beam of PUCCH 1 is the same as the receive beam of CSI-RS 1.

[0170] Embodiment 8: A method for determining PUCCH spatial relationship information

[0171] At a given moment, it is assumed that the UE receives PDSCH 1 sent by the base station on the serving cell 1; wherein a third signaling information (such as MAC-CE signaling) is carried on the PDSCH 1, wherein the third signaling information is used to activate a (semi-persistent) PUCCH 1 transmission; the source reference signal configured in the QCL-Type D of the TCI state indicated by the DM-RS1 of the PDSCH 1 received by the base station for the UE is CSI-RS 1; if the first preset condition is met, the UE can determine the first reference signal according to the source reference signal configured in the QCL-Type D of the TCI state of the first type of PDSCH; wherein the first reference signal refers to a reference signal for providing a spatial filter for the PUCCH 1;

[0172] Furthermore, the first preset condition includes at least one of the following:

[0173] The PUCCH is not configured with spatial relation information;

[0174] The UE receives first signaling information, wherein the first signaling information includes indication information indicating that spatial relationship information of an uplink signal or a channel is determined according to a signal associated with a downlink signal or a channel;

[0175] Further, the first type of PDSCH includes third signaling information, wherein the third signaling is used to activate PUCCH 1;

[0176] Therefore, in this embodiment, the first type of PDSCH is PDSCH 1; the UE can determine the first reference signal according to the source reference signal (CSI-RS 1) configured in QCL-Type D of the TCI state of DM-RS 1 of PDSCH1, that is, the transmit beam of PUCCH 1 is the same as the receive beam of CSI-RS 1.

[0177] Embodiment 9: A method for determining PUCCH spatial relationship information

[0178] Assume that the UE is configured with two CORESET groups, namely CORESET group 0 and CORESET group 1; wherein, the DCI located on CORESET group 0 is used to schedule PUCCH group 0 (i.e., CORESET group 0 corresponds to PUCCH group 0), and the DCI located on CORESET group 1 is used to schedule PUCCH group 1 (i.e., CORESET group 1 corresponds to PUCCH group 1); at a given time (slot n), assume that the UE has PUCCH 1 and PUCCH 2 to be transmitted on serving cell 1 and serving cell 2, respectively, wherein PUCCH 1 belongs to PUCCH group 0 and PUCCH 2 belongs to PUCCH group 1; there are CORESET 1-1, CORESET1-2, CORESET 2-1, and CORESET 2-2 on slot n; wherein, the CORESET ID corresponding to CORESET 1-1 and CORESET 2-1 is 1, and the CORESET ID corresponding to CORESET 1-2 and CORESET 2-2 is 2, and secondly, CORESET CORESET 1-1 and CORESET 1-2 belong to CORESET group 0, and CORESET 2-1 and CORESET2-2 belong to CORESET group 1; the source reference signals configured in QCL-Type D of the TCI states indicated by CORESET 1-1, CORESET1-2, CORESET 2-1, and CORESET 2-2 respectively received by the base station for the UE are CSI-RS 1-1, CSI-RS 1-2, CSI-RS 2-1, and CSI-RS 2-2 respectively; if the first preset condition is met, the UE can determine the first reference signal according to the source reference signal configured in QCL-Type D of the TCI state of the CORESET with the minimum control resource set identifier CORESET ID in the most recent slot of the PUCCH; wherein the first reference signal refers to the reference signal for providing a spatial filter for the PUCCH;

[0179] Furthermore, the first preset condition includes at least one of the following:

[0180] The PUCCH is not configured with spatial relation information;

[0181] The UE receives first signaling information, wherein the first signaling information includes indication information indicating that spatial relationship information of an uplink signal or a channel is determined according to a signal associated with a downlink signal or a channel;

[0182] Further, the PUCCH belongs to the first PUCCH group; the CORESET belongs to the first CORESET group; the first PUCCH group has a corresponding relationship with the first CORESET group;

[0183] Therefore, the UE can determine the first reference signal of PUCCH 1 based on the source reference signal (CSI-RS 1-1) configured in the QCL-Type D of the TCI state of CORESET 1-1; that is, PUCCH 1 and CSI-RS 1-1 have the same spatial filter; the UE can determine the first reference signal of PUCCH 2 based on the source reference signal (CSI-RS 2-1) configured in the QCL-Type D of the TCI state of CORESET 2-1; that is, PUCCH 2 and CSI-RS 2-1 have the same spatial filter.

[0184] Embodiment 10: A method for determining a PUCCH path loss reference signal

[0185] At a given time (slot n), it is assumed that the UE has a PUCCH to be transmitted on serving cell 1; there are CORESET 1 and CORESET 2 on slot n; wherein, the CORESET ID corresponding to CORESET 1 is 1, and the CORESETID corresponding to CORESET 2 is 2; the source reference signals configured in QCL-Type D of the TCI states indicated by CORESET 1 and CORESET2 respectively received by the base station for the UE are CSI-RS 1 and CSI-RS 2 respectively, in other words, CORESET 1 and CSI-RS 1 have the same receiving beam, and CORESET2 and CSI-RS 2 have the same receiving beam; if the second preset condition is met, the UE can determine the path loss reference signal according to the source reference signal configured in QCL-Type D of the TCI state of the CORESET with the minimum control resource set identifier CORESET ID in the nearest slot of the PUCCH; wherein, the UE uses the path loss reference signal to calculate the path loss of the PUCCH; then the UE can calculate the path loss of the PUCCH according to the CSI-RS 1 to determine the path loss reference signal, that is, the path loss reference signal of the PUCCH is CSI-RS 1:

[0186] Furthermore, the second preset condition includes at least one of the following:

[0187] The PUCCH is not configured with spatial relation information;

[0188] The UE receives first signaling information, wherein the first signaling information includes indication information indicating that spatial relationship information of an uplink signal or a channel is determined according to a signal associated with a downlink signal or a channel.

[0189] Embodiment 11: A method for determining a PUCCH path loss reference signal

[0190] Assume that the UE is configured with two CORESET groups, namely CORESET group 0 and CORESET group 1; wherein, the DCI located on CORESET group 0 is used to schedule PUCCH group 0 (i.e., CORESET group 0 corresponds to PUCCH group 0), and the DCI located on CORESET group 1 is used to schedule PUCCH group 1 (i.e., CORESET group 1 corresponds to PUCCH group 1); at a given time (slot n), assume that the UE has PUCCH 1 and PUCCH 2 to be transmitted on serving cell 1 and serving cell 2, respectively, wherein PUCCH 1 belongs to PUCCH group 0 and PUCCH 2 belongs to PUCCH group 1; there are CORESET 1-1, CORESET1-2, CORESET 2-1, and CORESET 2-2 on slot n; wherein, the CORESET ID corresponding to CORESET 1-1 and CORESET 2-1 is 1, and the CORESET ID corresponding to CORESET 1-2 and CORESET 2-2 is 2, and secondly, CORESET CORESET 1-1 and CORESET 1-2 belong to CORESET group 0, and CORESET 2-1 and CORESET2-2 belong to CORESET group 1; the base station receives for the UE the source reference signals configured in the QCL-Type D of the TCI states indicated by CORESET 1-1, CORESET1-2, CORESET 2-1, and CORESET 2-2, respectively, which are CSI-RS 1-1, CSI-RS 1-2, CSI-RS 2-1, and CSI-RS 2-2; if the second preset condition is met, the UE can determine the path loss reference signal according to the source reference signal configured in the QCL-Type D of the TCI state of the CORESET with the minimum control resource set identifier CORESET ID in the nearest slot of the PUCCH;

[0191] Furthermore, the second preset condition includes at least one of the following:

[0192] The PUCCH is not configured with spatial relation information;

[0193] The UE receives first signaling information, wherein the first signaling information includes indication information indicating that spatial relationship information of an uplink signal or a channel is determined according to a signal associated with a downlink signal or a channel;

[0194] Further, the PUCCH belongs to the first PUCCH group; the CORESET belongs to the first CORESET group; the first PUCCH group has a corresponding relationship with the first CORESET group;

[0195] Therefore, the UE can determine the path loss reference signal of PUCCH 1 based on the source reference signal (CSI-RS 1-1) configured in the QCL-Type D of the TCI state of CORESET 1-1; the UE can determine the path loss reference signal of PUCCH 2 based on the source reference signal (CSI-RS 2-1) configured in the QCL-Type D of the TCI state of CORESET 2-1.

[0196] The embodiment of the present application further provides a device for determining spatial relationship information, which can be applied to a first communication node, including:

[0197] The first determination module is used to determine the spatial relationship information of the uplink signal or the channel according to the downlink signal or the channel-associated signal when a first preset condition is met.

[0198] The embodiment of the present application provides another device for determining spatial relationship information, which can be applied to a second communication node. Fig.10 A schematic diagram of a device for determining spatial relationship information according to an embodiment of the present application is shown below:

[0199] The second determination module 1001 is used to determine the spatial relationship information of the uplink signal or channel according to the signal associated with the downlink signal or channel when the first preset condition is met; wherein the downlink signal or channel is a downlink signal or channel received by the first communication node;

[0200] The receiving module 1002 is used to receive an uplink signal or channel sent by the first communication node.

[0201] An embodiment of the present application provides a device for determining a path loss reference signal, which can be applied to a first communication node, including:

[0202] The third determination module is used to determine the path loss reference signal according to the reference signal associated with the CORESET with the smallest CORESET ID in the uplink signal or the channel in the latest time slot when the second preset condition is met.

[0203] The functions of each module in each device in the embodiments of the present application can be found in the corresponding description in the above method embodiments, and will not be repeated here.

[0204] Fig.11 is a schematic diagram of the base station structure of an embodiment of the present application, such as Fig.11As shown, the base station 110 provided in the embodiment of the present application includes: a memory 1103 and a processor 1104. The base station 110 may also include an interface 1101 and a bus 1102. The interface 1101, the memory 1103 and the processor 1104 are connected via a bus 1202. The memory 1103 is used to store instructions. The processor 1104 is configured to read the instructions to execute the technical solution of the above-mentioned method embodiment applied to the base station, and its implementation principle and technical effect are similar, which will not be repeated here.

[0205] Fig.12 This is a schematic diagram of the UE structure of an embodiment of the present application, such as Fig.12 As shown, the UE 120 provided in the embodiment of the present application includes: a memory 1203 and a processor 1204. The UE 120 may also include an interface 1201 and a bus 1202. The interface 1201, the memory 1203 and the processor 1204 are connected via the bus 1202. The memory 1203 is used to store instructions. The processor 1204 is configured to read the instructions to execute the technical solution of the method embodiment applied to the UE, and its implementation principle and technical effect are similar, which will not be repeated here.

[0206] Fig.13 This is a schematic diagram of the structure of a communication system according to an embodiment of the present application. The communication system includes the above-mentioned base station 110 and UE 120.

[0207] The present application provides a storage medium storing a computer program. When the computer program is executed by a processor, the method in the above embodiment is implemented.

[0208] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of hardware embodiments, software embodiments, or embodiments in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) that include computer-usable program codes.

[0209] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0210] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0211] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0212] The above description is only a preferred embodiment of the present application and is not intended to limit the protection scope of the present application.

Claims

1. A method for determining spatial relationship information, It is characterized in that Applied to a first communication node, comprising: When the first preset condition is met, the first communication node determines the spatial relationship information of the uplink signal or channel and the path loss reference signal according to the downlink signal or the channel-associated signal; The first communication node determines the spatial relationship information of the uplink signal or channel and the path loss reference signal according to the downlink signal or the channel-associated signal, including: The first communication node determines a quasi-co-location reference signal of a first quasi-co-location type associated with the downlink signal or channel as a first reference signal; the first quasi-co-location type is used to indicate that the downlink signal or channel has the same receiving spatial parameters as the first reference signal; Determine a spatial transmit filter and a path loss reference signal for the uplink signal or channel according to the first reference signal; Wherein, the first preset condition includes: The uplink signal or channel is not configured with spatial relationship information; the first communication node receives signaling information, and the signaling information includes indication information indicating that the spatial relationship information of the uplink signal or channel is determined according to a signal associated with the downlink signal or channel.

2. The method according to claim 1, It is characterized in that The first communication node determines spatial relationship information of an uplink signal or a channel according to a downlink signal or a signal associated with a channel, including: The first communication node determines the first reference signal according to the reference signal associated with the control resource set CORESET having the smallest control resource set identifier CORESETID in the latest time slot of the uplink signal or channel.

3. The method according to claim 2, It is characterized in that The first communication node determines a first reference signal according to a quasi-co-location reference signal of a first quasi-co-location type associated with the CORESET; There is a corresponding relationship between the serving cell where the CORESET is located and the serving cell where the uplink signal or channel is located.

4. The method according to claim 2, It is characterized in that The CORESET belongs to the first CORESET group; The uplink signal or channel belongs to a first uplink signal or channel group; Among them, the first CORESET group and the first uplink signal or channel group have a corresponding relationship.

5. The method according to claim 1, It is characterized in that The first communication node determines spatial relationship information of an uplink signal or a channel according to a downlink signal or a signal associated with a channel, including: The first communication node determines a second reference signal according to a first type of downlink signal or a channel-associated signal; wherein the second reference signal is a reference signal for providing the uplink signal or a channel spatial filter.

6. The method according to claim 5, It is characterized in that The first type of downlink signal or channel meets at least one of the following characteristics: The first type of downlink signal or channel belongs to a first type of downlink signal or channel set; wherein the downlink signals or channels in the first type of downlink signal or channel set have the same starting position; The first type of downlink signal or channel belongs to a first type of downlink signal or channel set; wherein the downlink signals or channels in the first type of downlink signal or channel set have the same end position; The ID of the first type of downlink signal or channel is the largest; The first type of downlink signal or channel is closest to the uplink reference signal or channel; The aggregation level value of the first type of downlink channel is the largest; wherein the first type of downlink channel includes a downlink control channel; The modulation coding scheme MCS index value associated with the demodulation reference signal DM-RS of the first type of downlink channel is the largest; wherein the first type of downlink channel includes a downlink data channel; The first type of downlink channel is a downlink channel corresponding to a HARQ-ACK bit group at a predetermined position in a hybrid automatic repeat request HARQ-ACK bit group set included in the uplink channel; wherein one HARQ-ACK bit group corresponds to one downlink channel; The first type of downlink channel includes a first signaling; wherein the first signaling is used to activate the uplink signal or channel; The first type of downlink channel includes a second signaling; wherein the second signaling is used to schedule the uplink signal or channel.

7. The method according to any one of claims 1 to 6, It is characterized in that The downlink signal or the channel-associated signal also meets the following characteristics: The signal associated with the downlink signal also includes: the downlink signal; The signal associated with the downlink channel also includes: a DM-RS of the downlink channel.

8. A method for determining spatial relationship information, It is characterized in that include: When the first preset condition is met, the second communication node determines the spatial relationship information of the uplink signal or channel according to the signal associated with the downlink signal or channel; wherein the downlink signal or channel is the downlink signal or channel received by the first communication node; The second communication node receives an uplink signal or channel sent by the first communication node according to the spatial relationship information; The second communication node determines the spatial relationship information of the uplink signal or the channel according to the downlink signal or the channel-associated signal, including: The second communication node determines a quasi-co-location reference signal of a first quasi-co-location type associated with the downlink signal or channel as a first reference signal; the first quasi-co-location type is used to indicate that the downlink signal or channel has the same receiving spatial parameters as the first reference signal; Determine a spatial receiving filter for the uplink signal or channel according to the first reference signal; The first preset condition includes: The uplink signal or channel is not configured with spatial relationship information; the first communication node receives signaling information, and the signaling information includes indication information indicating that the spatial relationship information of the uplink signal or channel is determined according to a signal associated with the downlink signal or channel.

9. The method according to claim 8, It is characterized in that The second communication node determines the spatial relationship information of the uplink signal or the channel according to the downlink signal or the channel-associated signal, including: The second communication node determines a third reference signal based on a reference signal associated with a control resource set CORESET having a minimum control resource set identifier CORESETID in a recent time slot of the uplink signal or channel; wherein the third reference signal is a reference signal for providing a spatial filter for the uplink signal or channel.

10. The method according to claim 9, It is characterized in that The second communication node determines a third reference signal according to a quasi-co-location reference signal of a first quasi-co-location type associated with the CORESET; There is a corresponding relationship between the serving cell where the CORESET is located and the serving cell where the uplink signal or channel is located.

11. The method according to claim 10, It is characterized in that include: The CORESET belongs to the first CORESET group; The uplink signal or channel belongs to a first uplink signal or channel group; Among them, the first CORESET group and the first uplink signal or channel group have a corresponding relationship.

12. The method according to claim 8, It is characterized in that The second communication node determines the spatial relationship information of the uplink signal or the channel according to the downlink signal or the channel-associated signal, including: The second communication node determines a fourth reference signal according to the first type of downlink signal or a channel-associated signal; wherein the fourth reference signal is a reference signal for providing the uplink signal or a channel spatial filter.

13. The method according to claim 12, It is characterized in that The first type of downlink signal or channel meets at least one of the following characteristics: The first type of downlink signal or channel belongs to a first type of downlink signal or channel set; wherein the downlink signals or channels in the first type of downlink signal or channel set have the same starting position; The first type of downlink signal or channel belongs to a first type of downlink signal or channel set; wherein the downlink signals or channels in the first type of downlink signal or channel set have the same end position; The ID of the first type of downlink signal or channel is the largest; The first type of downlink signal or channel is closest to the uplink reference signal or channel; The aggregation level value of the first type of downlink channel is the largest; wherein the first type of downlink channel includes a downlink control channel; The MCS index value associated with the DM-RS of the first type of downlink channel is the largest; wherein the first type of downlink channel includes a downlink data channel; The first type of downlink channel is a downlink channel corresponding to a HARQ-ACK bit group at a predetermined position in a HARQ-ACK bit group set included in the uplink channel; wherein one HARQ-ACK bit group corresponds to one downlink channel; The first type of downlink channel includes a first signaling; wherein the first signaling is used to activate the uplink signal or channel; The first type of downlink channel includes a second signaling; wherein the second signaling is used to schedule the uplink signal or channel.

14. The method according to any one of claims 8 to 13, It is characterized in that The downlink signal or the channel-associated signal meets at least one of the following characteristics: The signal associated with the downlink signal includes at least one of the following: the downlink signal, a quasi-co-site reference signal of the downlink signal; The signal associated with the downlink channel includes at least one of the following: a DM-RS of the downlink channel, and a quasi-co-site reference signal of the DM-RS of the downlink channel.

15. The method according to any one of claims 10 and 14, It is characterized in that The quasi-co-site reference signal is a source reference signal configured in the first quasi-co-site type of the TCI state indicated by the second communication node for receiving the downlink signal or channel.

16. The method according to claim 8, It is characterized in that The first preset condition includes at least one of the following: The uplink signal or channel is not configured with spatial relationship information; The first communication node receives third signaling information, wherein the third signaling information includes indication information indicating that spatial relationship information of the uplink signal or channel is determined according to a signal associated with the downlink signal or channel.

17. A method for determining a path loss reference signal, It is characterized in that include: When the second preset condition is met, the first communication node determines the path loss reference signal according to the reference signal associated with the CORESET with the smallest CORESETID in the uplink signal or the channel in the most recent time slot; Wherein, the second preset condition includes: The uplink signal or channel is not configured with spatial relationship information; the first communication node receives fourth signaling information, and the fourth signaling information includes indication information indicating that the spatial relationship information of the uplink signal or channel is determined according to a signal associated with the downlink signal or channel.

18. The method according to claim 17, It is characterized in that The first communication node determines the path loss reference signal according to a quasi-co-location reference signal of a first quasi-co-location type associated with the CORESET; There is a corresponding relationship between the serving cell where the CORESET is located and the serving cell where the uplink signal or channel is located.

19. The method according to claim 18, It is characterized in that include: The CORESET belongs to the second CORESET group; The uplink signal or channel belongs to a second uplink signal or channel group; Among them, the second CORESET group and the second uplink signal or channel group have a corresponding relationship.

20. A device for determining spatial relationship information, It is characterized in that Applied to a first communication node, comprising: A first determination module, configured to determine, by the first communication node, spatial relationship information of an uplink signal or channel and a path loss reference signal according to a downlink signal or a channel-associated signal when a first preset condition is met; The first communication node determines the spatial relationship information of the uplink signal or channel and the path loss reference signal according to the downlink signal or the channel-associated signal, including: The first communication node determines a quasi-co-location reference signal of a first quasi-co-location type associated with the downlink signal or channel as a first reference signal; the first quasi-co-location type is used to indicate that the downlink signal or channel has the same receiving spatial parameters as the first reference signal; Determine a spatial transmit filter and a path loss reference signal for the uplink signal or channel according to the first reference signal; Wherein, the first preset condition includes: The uplink signal or channel is not configured with spatial relationship information; the first communication node receives signaling information, and the signaling information includes indication information indicating that the spatial relationship information of the uplink signal or channel is determined according to a signal associated with the downlink signal or channel.

21. A device for determining spatial relationship information, It is characterized in that include: A second determination module is used to determine the spatial relationship information of the uplink signal or channel according to the signal associated with the downlink signal or channel when the first preset condition is met; wherein the downlink signal or channel is a downlink signal or channel received by the first communication node; A receiving module, configured for the second communication node to receive an uplink signal or channel sent by the first communication node according to the spatial relationship information; The second communication node determines the spatial relationship information of the uplink signal or the channel according to the downlink signal or the channel-associated signal, including: The second communication node determines a quasi-co-location reference signal of a first quasi-co-location type associated with the downlink signal or channel as a first reference signal; the first quasi-co-location type is used to indicate that the downlink signal or channel has the same receiving spatial parameters as the first reference signal; Determine a spatial receiving filter for the uplink signal or channel according to the first reference signal; The first preset condition includes: The uplink signal or channel is not configured with spatial relationship information; the first communication node receives signaling information, and the signaling information includes indication information indicating that the spatial relationship information of the uplink signal or channel is determined according to a signal associated with the downlink signal or channel.

22. A device for determining a path loss reference signal, It is characterized in that include: A third determination module is used to determine the path loss reference signal according to the reference signal associated with the CORESET with the smallest CORESETID in the uplink signal or the channel in the most recent time slot when the second preset condition is met; Wherein, the second preset condition includes: The uplink signal or channel is not configured with spatial relationship information; the first communication node receives fourth signaling information, and the fourth signaling information includes indication information indicating that the spatial relationship information of the uplink signal or channel is determined according to a signal associated with the downlink signal or channel.

23. A base station, It is characterized in that The base station includes: a processor and a memory; The memory is used to store instructions; The processor is configured to read the instructions to execute the method according to any one of claims 8 to 16.

24. A UE, It is characterized in that The UE includes: a processor and a memory; The memory is used to store instructions; The processor is configured to read the instructions to execute the method according to any one of claims 1 to 7 and claims 17 to 19.

25. A communication system, It is characterized in that The communication system comprises the base station according to claim 23 and the UE according to claim 24.

26. A storage medium, It is characterized in that The storage medium stores a computer program, and when the computer program is executed by a processor, the method according to any one of claims 1 to 19 is implemented.

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