Physical downlink control channel sending and receiving method and device

Abstract

The present disclosure relates to a method for sending a physical downlink control channel, which is applicable to a base station, wherein a plurality of sending units are provided in the base station, and the method comprises: sending a physical downlink control channel PDCCH to a terminal through a plurality of sending units, wherein the demodulation reference signal DMRS sequence of the PDCCH sent by different sending units is different. According to the present disclosure, even if the communication link between a certain sending unit among the plurality of sending units and the terminal is affected due to reasons such as being blocked or deep fading, since there is still a communication link between other sending units among the plurality of sending units and the terminal to send the PDCCH, it is possible to ensure that the PDCCH is smoothly sent to the terminal, which is conducive to improving the reliability of sending the PDCCH. In addition, since the wireless channels through which the PDCCHs sent by different sending units pass are different, after receiving the PDCCH, the terminal can estimate the corresponding wireless channels based on different DMRS sequence configurations and further demodulate the PDCCH.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a physical downlink control channel sending method, a physical downlink control channel receiving method, a physical downlink control channel sending device, a physical downlink control channel receiving device, an electronic device, and a computer-readable storage medium. Background Art

[0002] The physical downlink control channel (PDCCH) carries downlink control information (DCI). DCI allocates uplink and downlink resources, and its reliability directly affects the performance of the communication system and user experience.

[0003] However, in related technologies, during the communication process between the base station and the terminal, the base station will only transmit the PDCCH to the terminal through one communication link. If the communication link is blocked or in deep fading, the reliability of the PDCCH transmission cannot be ensured. Summary of the Invention

[0004] In view of this, the embodiments of the present disclosure propose a physical downlink control channel sending method, a physical downlink control channel receiving method, a physical downlink control channel sending device, a physical downlink control channel receiving device, an electronic device and a computer-readable storage medium to solve the technical problems in the related technology.

[0005] According to a first aspect of an embodiment of the present disclosure, a physical downlink control channel transmission method is proposed, which is applicable to a base station, wherein a plurality of transmission units are provided in the base station, and the method includes:

[0006] A physical downlink control channel PDCCH is sent to a terminal through multiple sending units, wherein demodulation reference signal DMRS sequences of the PDCCH sent by different sending units are different.

[0007] According to a second aspect of an embodiment of the present disclosure, a physical downlink control channel receiving method is proposed, which is applicable to a terminal, wherein a plurality of receiving units are provided in the terminal, and the method includes:

[0008] The PDCCHs sent by the multiple sending units in the base station are received by the multiple receiving units, wherein the demodulation reference signal DMRS sequences of the PDCCHs sent by different sending units are different.

[0009] According to a third aspect of an embodiment of the present disclosure, a physical downlink control channel sending device is provided, which is applicable to a base station. A plurality of sending units are provided in the base station. The device includes:

[0010] The downlink sending module is configured to send a physical downlink control channel PDCCH to the terminal through multiple sending units, wherein the demodulation reference signal DMRS sequences of the PDCCH sent by different sending units are different.

[0011] According to a fourth aspect of an embodiment of the present disclosure, a physical downlink control channel receiving device is provided, which is applicable to a terminal, wherein a plurality of receiving units are provided in the terminal, and the device includes:

[0012] The downlink receiving module is configured to receive, through the multiple receiving units, PDCCHs sent by multiple sending units in the base station, wherein demodulation reference signal (DMRS) sequences of the PDCCHs sent by different sending units are different.

[0013] According to a fifth aspect of the embodiments of the present disclosure, an electronic device is provided, including:

[0014] processor;

[0015] a memory for storing processor-executable instructions;

[0016] The processor is configured to execute the above-mentioned physical downlink control channel sending method and / or physical downlink control channel receiving method.

[0017] According to a sixth aspect of an embodiment of the present disclosure, a computer-readable storage medium is proposed, on which a computer program is stored. When the program is executed by a processor, the steps in the physical downlink control channel sending method and / or the physical downlink control channel receiving method are implemented.

[0018] According to a seventh aspect of the embodiments of the present disclosure, an electronic device is provided, including:

[0019] processor;

[0020] a memory for storing processor-executable instructions;

[0021] The processor is configured to execute the above-mentioned physical downlink control channel receiving method.

[0022] According to an eighth aspect of the embodiments of the present disclosure, a computer-readable storage medium is proposed, on which a computer program is stored. When the program is executed by a processor, the steps in the above-mentioned physical downlink control channel receiving method are implemented.

[0023] According to the embodiments of the present disclosure, even if the communication link between a certain sending unit among the multiple sending units and the terminal is affected due to obstruction, deep fading, etc., since there is still a communication link between other sending units among the multiple sending units and the terminal to send PDCCH, it can be ensured that the PDCCH is smoothly sent to the terminal, which is beneficial to improving the reliability of sending PDCCH, especially in the high frequency band, and can increase the robustness of PDCCH to meet the needs of URLLC services.

[0024] In addition, since the PDCCHs sent by different transmitting units pass through different wireless channels, after receiving the PDCCH, the terminal can estimate the corresponding wireless channels based on different DMRS sequence configurations and further demodulate the PDCCH. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0026] Figure 1 It is a schematic flowchart of a method for sending a physical downlink control channel according to an embodiment of the present disclosure.

[0027] Figure 2 It is a schematic flow chart of another method for sending a physical downlink control channel according to an embodiment of the present disclosure.

[0028] Figure 3 It is a schematic flow chart of another method for sending a physical downlink control channel according to an embodiment of the present disclosure.

[0029] Figure 4 It is a schematic flow chart of another method for sending a physical downlink control channel according to an embodiment of the present disclosure.

[0030] Figure 5 It is a schematic flow chart of another method for sending a physical downlink control channel according to an embodiment of the present disclosure.

[0031] Figure 6 It is a schematic flow chart of another method for sending a physical downlink control channel according to an embodiment of the present disclosure.

[0032] Figure 7 It is a schematic flow chart of another method for sending a physical downlink control channel according to an embodiment of the present disclosure.

[0033] Figure 8This is a schematic diagram showing the mapping of a DMRS sequence on time-frequency resources according to an embodiment of the present disclosure.

[0034] Figure 9 It is a schematic flow chart of a physical downlink control channel receiving method according to an embodiment of the present disclosure.

[0035] Figure 10 It is a schematic flow chart of another physical downlink control channel receiving method according to an embodiment of the present disclosure.

[0036] Figure 11 It is a schematic flow chart of another physical downlink control channel receiving method according to an embodiment of the present disclosure.

[0037] Figure 12 It is a schematic flow chart of another physical downlink control channel receiving method according to an embodiment of the present disclosure.

[0038] Figure 13 It is a schematic flow chart of another physical downlink control channel receiving method according to an embodiment of the present disclosure.

[0039] Figure 14 It is a schematic flow chart of another physical downlink control channel receiving method according to an embodiment of the present disclosure.

[0040] Figure 15 It is a schematic flow chart of another physical downlink control channel receiving method according to an embodiment of the present disclosure.

[0041] Figure 16 It is a schematic flow chart of another physical downlink control channel receiving method according to an embodiment of the present disclosure.

[0042] Figure 17 It is a schematic block diagram of a physical downlink control channel sending device according to an embodiment of the present disclosure.

[0043] Figure 18 It is a schematic block diagram of another physical downlink control channel sending device according to an embodiment of the present disclosure.

[0044] Figure 19 It is a schematic block diagram of a physical downlink control channel receiving device according to an embodiment of the present disclosure.

[0045] Figure 20 It is a schematic block diagram of another physical downlink control channel receiving device according to an embodiment of the present disclosure.

[0046] Figure 21 It is a schematic block diagram of another physical downlink control channel receiving device according to an embodiment of the present disclosure.

[0047] Figure 22 It is a schematic block diagram of another physical downlink control channel receiving device according to an embodiment of the present disclosure.

[0048] Figure 23 It is a schematic block diagram of an apparatus for transmitting a physical downlink control channel according to an embodiment of the present disclosure.

[0049] Figure 24 It is a schematic block diagram of an apparatus for receiving a physical downlink control channel according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0050] The following will be combined with the accompanying drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the embodiments described are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present disclosure.

[0051] Figure 1 This is a schematic flow chart illustrating a method for transmitting a physical downlink control channel according to an embodiment of the present disclosure. The method for transmitting a physical downlink control channel illustrated in this embodiment can be applied to base stations, including but not limited to base stations in communication systems such as 5G base stations and 6G base stations. The base station can communicate with terminals acting as user equipment, including but not limited to electronic devices such as mobile phones, tablets, wearable devices, sensors, and IoT devices. In one embodiment, the terminal can be a terminal to which the method for receiving a physical downlink control channel described in any subsequent embodiment is applicable.

[0052] In one embodiment, the base station is provided with multiple transmitting units, which may be antenna panels or transmission reception points (TRPs). The base station may choose to transmit the PDCCH via multiple transmitting units or select a single transmitting unit to transmit the PDCCH, and the specific configuration may be based on the needs of the base station.

[0053] like Figure 1 As shown, the physical downlink control channel sending method may include the following steps:

[0054] In step S101, a physical downlink control channel PDCCH is sent to a terminal via multiple sending units, wherein the demodulation reference signal DMRS sequences of the PDCCH sent by different sending units are different.

[0055] In one embodiment, the base station may send the PDCCH to the terminal through multiple sending units, that is, each sending unit may send the PDCCH to the terminal.

[0056] Each sending unit may send the PDCCH to the terminal using the same time-frequency resources or different time-frequency resources, and the base station may select the specific one according to the needs.

[0057] A communication link may be formed between each sending unit and the terminal, so that multiple communication links may be formed between multiple sending units and the terminal. The base station may send the PDCCH to the terminal through the multiple communication links.

[0058] Accordingly, even if the communication link between a certain transmitting unit among the multiple transmitting units and the terminal is affected due to obstruction, deep fading, etc., since there is still a communication link between other transmitting units among the multiple transmitting units and the terminal to send PDCCH, it can be ensured that the PDCCH is smoothly sent to the terminal, which is beneficial to improving the reliability of sending PDCCH, especially in high frequency bands, and can increase the robustness of PDCCH to meet the needs of URLLC (Ultra-relaible and LowLatency Communication) services.

[0059] In addition, since the PDCCHs sent by different transmitting units pass through different wireless channels, after receiving the PDCCH, the terminal can estimate the corresponding wireless channels based on different DMRS sequence configurations and further demodulate the PDCCH.

[0060] It should be noted that different sending units can be at different positions in space or at the same position. When different sending units are at the same position in space, the directions in which different sending units send signals may be different, for example, the directions of the sending beams are different.

[0061] Figure 2 FIG. 1 is a schematic flow chart of another method for transmitting a physical downlink control channel according to an embodiment of the present disclosure. Figure 2 As shown, the method further includes:

[0062] In step S201, initialization parameters are determined for each of the sending units respectively;

[0063] In step S202, a DMRS sequence of the PDCCH sent by the sending unit is determined according to the initialization parameter and a pseudo-random sequence.

[0064] In one embodiment, the DMRS sequence can be determined by a pseudo-random sequence, and the function for generating the pseudo-random sequence needs to be initialized. The function includes but is not limited to a GOLD sequence generation function. The parameters obtained by initializing the function are initialization parameters, and then the DMRS sequence can be determined based on the initialization parameters and the pseudo-random sequence. Specifically, the function for generating the pseudo-random sequence can be determined based on the initialization parameters, and then the DMRS sequence is determined based on the function and the sequence number of the DMRS sequence to be generated.

[0065] According to this embodiment, initialization parameters can be determined for each sending unit allocation, so that different initialization parameters can be obtained for different sending units, and then different pseudo-random sequences can be obtained based on different initialization parameters. Finally, different DMRS sequences can be obtained based on different pseudo-random sequences, thereby realizing the determination of different DMRS sequences for PDCCHs sent by different sending units, and thus ensuring that the DMRS sequences of PDCCHs sent by different sending units are different.

[0066] Figure 3 FIG. 1 is a schematic flow chart of another method for sending a physical downlink control channel according to an embodiment of the present disclosure. Figure 3 As shown, the initialization parameters determined for each sending unit include:

[0067] In step S301, different scrambling codes are determined for different sending units;

[0068] In step S302, an initialization parameter in a pseudo-random sequence of a corresponding sending unit is determined according to the scrambling code;

[0069] In step S303, the scrambling code is configured for the terminal.

[0070] In one embodiment, the initialization parameters can be obtained based on the scrambling code, and the base station can configure the scrambling code used to determine the initialization parameters to the terminal, for example, configuring the scrambling code to the terminal through radio resource control RRC (Radio Resource Control) signaling, so that the terminal can determine the initialization parameters based on the received scrambling code, thereby determining the DMRS corresponding to the pseudo-random sequence, and then demodulating the PDCCH according to the DMRS sequence.

[0071] In one embodiment, the initialization parameters can be determined by referring to the following formula:

[0072]

[0073] Where l represents the position of the symbol in the time domain; c init It is the initialization parameter of the GOLD sequence generation function; N is the number of symbols contained in a time slot, for example, it can be 14; IDk is the scrambling code, where k is the relevant information of the sending unit, that is, different scrambling codes N can be set for different sending units. IDk , so that different initialization parameters can be obtained, and then different DMRS sequences can be obtained. IDk The value range can be 0 to 65535. It is the time slot number within the radio frame.

[0074] In one embodiment, the DMRS sequence may be determined by referring to the following formula:

[0075]

[0076] Where l represents the symbol position in the time domain; c() is the GOLD sequence generation function, where c(2m) and c(2m+1) can be considered different GOLD sequences; and m is the DMRS sequence number. Based on this pseudo-random sequence, a DMRS sequence mapped to symbol l can be generated.

[0077] Figure 4 FIG. 1 is a schematic flow chart of another method for sending a physical downlink control channel according to an embodiment of the present disclosure. Figure 4 As shown, the initialization parameters determined for each sending unit include:

[0078] In step S401, in response to not configuring the scrambling code corresponding to the sending unit for the terminal, determining the scrambling code according to the identifier of the cell corresponding to the base station and the relevant information of the sending unit;

[0079] In step S402, an initialization parameter in a pseudo-random sequence of a corresponding sending unit is determined according to the scrambling code.

[0080] In one embodiment, when the base station does not configure a scrambling code corresponding to the sending unit for the terminal, the terminal cannot determine the DMRS sequence based on the scrambling code configured by the base station. The base station and the terminal may pre-agree that in this case, the scrambling code is determined based on the information that can be obtained, for example, the scrambling code is determined based on the identifier of the cell corresponding to the base station and the relevant information of the sending unit.

[0081] For a base station, the base station can determine the identifier of its corresponding cell and the relevant information of its own sending unit. For a terminal, after receiving information sent by the base station (including but not limited to the PDCCH), the terminal can determine the identifier of the cell corresponding to the base station. In addition, when the base station sends the PDCCH through the sending unit, it can also carry the relevant information of the sending unit. After receiving the PDCCH, the terminal can determine the relevant information of the sending unit that sent the PDCCH, thereby determining the scrambling code based on the identifier of the cell corresponding to the base station and the relevant information of the sending unit, and then determining the DMRS sequence based on the scrambling code.

[0082] In one embodiment, the initialization parameters can be determined by referring to the following formula:

[0083]

[0084] Where, l represents the position of the symbol in the time domain; The number of symbols contained in a time slot, for example, can be 14; is the time slot number within the radio frame; N ID For scrambling, is the identifier of the cell corresponding to the base station, k is the relevant information of the sending unit, and accordingly, for different sending units, the relevant information of the sending unit may be different, and the scrambling code N ID It can be different, that is, different scrambling codes N can be set for different sending units ID , so that different initialization parameters can be obtained, and then different DMRS sequences can be obtained. ID The value range can be 0 to 65535.

[0085] Figure 5 FIG. 1 is a schematic flow chart of another method for sending a physical downlink control channel according to an embodiment of the present disclosure. Figure 5 As shown, the initialization parameters determined for each sending unit include:

[0086] In step S501, a function for calculating the initialization parameter is determined based on the relevant information of the sending unit; for example, the function for calculating the initialization parameter is determined based on the relevant information of the sending unit, the number of symbols contained in the time slot, the position of the symbols, the time slot number in the wireless frame, and the scrambling code.

[0087] In one embodiment, the initialization parameters need to be determined based on a function. For example, in the aforementioned embodiment, the function is:

[0088]

[0089] Or:

[0090]

[0091] The meaning of each parameter in the function calculation formula is the same as Figure 3 and Figure 4 The parameters in the embodiment section will not be described here one by one!

[0092] In these two embodiments, the function for calculating the initialization parameters does not change.

[0093] In this embodiment, the function for calculating the initialization parameter may be adjusted. Specifically, the function for calculating the initialization parameter may be determined based on the relevant information of the transmitting unit, the number of symbols included in the time slot, the position of the symbol, the time slot number in the radio frame, and the scrambling code. For example, the relevant information k of the transmitting unit may be added to the above function in an additive relationship (other relationships may also be used, such as a multiplication relationship with the scrambling code). Then, the function for calculating the initialization parameter may be as follows:

[0094]

[0095] The meaning of each parameter in the function calculation formula is the same as Figure 3 and Figure 4 The parameters in the embodiment section will not be described here one by one!

[0096] Based on this, for different sending units, the relevant information k of the sending unit may be different, so that for different sending units, the function used to calculate the initialization parameter is different, then the calculated initialization parameters can be different, that is, for different sending units, different initialization parameters can be obtained, and then different DMRS sequences can be obtained.

[0097] It should be noted that, in all embodiments, the relevant information of the sending unit includes but is not limited to the identification and serial number of the sending unit, and the random number generated for the sending unit.

[0098] Figure 6 FIG. 1 is a schematic flow chart of another method for sending a physical downlink control channel according to an embodiment of the present disclosure. Figure 6 As shown, sending the PDCCH to the terminal through multiple sending units includes:

[0099] In step S601, a PDCCH is sent to a terminal using the same time-frequency resources via multiple sending units.

[0100] In one embodiment, multiple sending units can send PDCCHs to the terminal in the same time-frequency resources, that is, multiple sending units can use space division multiplexing SDM (Space Division Multiplexing). Accordingly, the terminal can receive multiple PDCCHs sent by the base station in the same time-frequency resources through multiple receiving units. Although multiple PDCCHs are received in the same time-frequency resources, the DMRS sequences in different PDCCHs are different. Therefore, it can be ensured that the terminal demodulates the PDCCHs corresponding to different DMRS sequences based on different DMRS sequences.

[0101] Figure 7 FIG. 1 is a schematic flow chart of another method for sending a physical downlink control channel according to an embodiment of the present disclosure. Figure 7 As shown, sending the PDCCH to the terminal through multiple sending units includes:

[0102] In step S701, a PDCCH is sent to a terminal via a same DMRS port through multiple sending units.

[0103] In one embodiment, multiple transmitting units can transmit PDCCHs to the terminal on the same DMRS port (e.g., port 2000). This ensures that the current protocol requirement that PDCCHs only support single-port transmission is met. The DMRS sequences in the multiple PDCCHs transmitted by the multiple transmitting units are different, and can be considered to be transmitted on multiple non-orthogonal (also known as quasi-orthogonal) DMRS ports.

[0104] Thus, it can be ensured that although the transmitted DMRS sequences are different, the mapping positions in the time domain and frequency domain are the same. Figure 8 As shown, multiple DMRS sequences are mapped to the same positions in the time and frequency domains, with one DMRS RE mapped to every three data resource elements (REs). In the PDCCH, the data REs can contain DCI. This means that the base station transmits the DMRS REs and data REs in the PDCCH at the same time-frequency positions.

[0105] For example, the following formula can be used to map DMRS on time-frequency resources:

[0106]

[0107]

[0108] k′=0,1,2;

[0109] n=0,1,...

[0110] in, is the RE position of the DMRS sequence on the time-frequency resource, is the power adjustment factor, r l is the DMRS sequence, k′ is the sequence number in the DMRS sequence, The number of subcarriers contained in a PRB, for example, 12.

[0111] Optionally, the downlink control information DCI in the PDCCH sent by each of the sending units to the terminal is the same.

[0112] In one embodiment, the DCI in the PDCCH sent by each sending unit to the terminal can be the same. Accordingly, even if the communication link between a sending unit among the multiple sending units and the terminal is affected due to obstruction, deep fading, etc., since there is still a communication link between other sending units among the multiple sending units and the terminal to send PDCCH, the effectiveness of the PDCCH sending link can be improved, and higher reception reliability can be guaranteed, so that the terminal can obtain DCI from the PDCCH.

[0113] Optionally, the PDCCH sent by each sending unit to the terminal carries partial information of the DCI, and the partial information of the DCI carried in the PDCCHs sent by the multiple sending units to the terminal constitutes a complete DCI.

[0114] In one embodiment, the PDCCH sent by each sending unit to the terminal may carry partial information of the DCI, and the partial information of the DCI carried in the PDCCHs sent by multiple sending units to the terminal may constitute a complete DCI.

[0115] For example, for three sending units, a complete DCI can be divided into three parts after encoding, wherein the first part is carried by the PDCCH sent by the first sending unit, the second part is carried by the PDCCH sent by the second sending unit, and the third part is carried by the PDCCH sent by the third sending unit. Accordingly, the flexibility of sending DCI can be improved, and even when the amount of DCI data is large, the DCI can be divided into multiple parts with smaller data amounts and sent separately.

[0116] Figure 9This is a schematic flow chart illustrating a method for receiving a physical downlink control channel according to an embodiment of the present disclosure. The method for receiving a physical downlink control channel illustrated in this embodiment can be applied to terminals, including but not limited to electronic devices such as mobile phones, tablets, wearable devices, sensors, and IoT devices. The terminal can function as a user device and communicate with a base station, including but not limited to base stations in communication systems such as 5G base stations and 6G base stations. In one embodiment, the base station can be a base station to which the method for transmitting a physical downlink control channel described in any of the above embodiments is applicable.

[0117] In one embodiment, the terminal may be provided with multiple receiving units, such as multiple receiving antennas, and each receiving antenna may receive a downlink control channel sent by the base station.

[0118] like Figure 9 As shown, the physical downlink control channel receiving method may include the following steps:

[0119] In step S901, PDCCHs sent by multiple sending units in a base station are received by the multiple receiving units, wherein the demodulation reference signal DMRS sequences of the PDCCHs sent by different sending units are different.

[0120] In one embodiment, the base station can send PDCCH to the terminal through multiple sending units, that is, each sending unit can send PDCCH to the terminal. Accordingly, the terminal can receive PDCCH sent by multiple sending units in the base station through multiple receiving units, and the DMRS sequences of the PDCCH received by different receiving units are also different.

[0121] Each sending unit may send the PDCCH to the terminal using the same time-frequency resources or different time-frequency resources, and the base station may select the specific one according to the needs.

[0122] A communication link may be formed between each transmitting unit and the receiving unit, and thus multiple communication links may be formed between multiple transmitting units and multiple receiving units. The base station may send the PDCCH to the terminal through the multiple communication links.

[0123] Accordingly, even if the communication link between a certain sending unit among the multiple sending units and the terminal is affected due to obstruction, deep fading, etc., since there is still a communication link between other sending units among the multiple sending units and the terminal to send PDCCH, it can be ensured that the PDCCH is sent to the terminal smoothly, which is conducive to improving the reliability of sending PDCCH.

[0124] In addition, since the PDCCHs sent by different transmitting units pass through different wireless channels, after receiving the PDCCH, the terminal can estimate the corresponding wireless channels based on different DMRS sequence configurations and further demodulate the PDCCH.

[0125] Figure 10 FIG. 1 is a schematic flow chart of another method for receiving a physical downlink control channel according to an embodiment of the present disclosure. Figure 10 As shown, the method further includes:

[0126] In step S1001, initialization parameters corresponding to the PDCCH sent by each sending unit are determined;

[0127] In step S1002, a DMRS sequence of the PDCCH sent by the corresponding sending unit is determined according to the initialization parameter and the pseudo-random sequence.

[0128] In one embodiment, since the base station allocates and determines initialization parameters for each transmitting unit, different initialization parameters can be obtained for different transmitting units. Then, when the terminal receives multiple PDCCH axes, it can determine the initialization parameters corresponding to the PDCCHs sent by each transmitting unit, and the initialization parameters corresponding to different transmitting units are different. Then, the DMRS sequence of the PDCCH sent by the transmitting unit can be determined based on different initialization parameters and pseudo-random sequences. Specifically, a function for generating a pseudo-random sequence can be determined based on the initialization parameters, and then the DMRS sequence can be determined based on the function and the sequence number of the DMRS sequence to be generated, thereby obtaining different DMRS sequences based on different initialization parameters to demodulate each PDCCH.

[0129] Figure 11 FIG. 1 is a schematic flow chart of another method for receiving a physical downlink control channel according to an embodiment of the present disclosure. Figure 11 As shown, the determining of the initialization parameters corresponding to the PDCCH sent by each of the sending units includes:

[0130] In step S1101, a scrambling code corresponding to each of the sending units is determined according to configuration information sent by the base station, wherein different sending units correspond to different scrambling codes;

[0131] In step S1102, an initialization parameter in a pseudo-random sequence of a corresponding sending unit is determined according to the scrambling code.

[0132] In one embodiment, the initialization parameter can be obtained based on the scrambling code, and the base station can configure the scrambling code used to determine the initialization parameter to the terminal, for example, configuring the scrambling code to the terminal through radio resource control RRC signaling, so that the terminal can determine the initialization parameter based on the received scrambling code, thereby determining the DMRS corresponding to the pseudo-random sequence, and then demodulating the PDCCH according to the DMRS sequence.

[0133] In one embodiment, the initialization parameters can be determined by referring to the following formula:

[0134]

[0135] Where l represents the position of the symbol in the time domain; c init It is the initialization parameter of the GOLD sequence generation function; N is the number of symbols contained in a time slot, for example, it can be 14; IDk is the scrambling code, where k is the relevant information of the sending unit, that is, different scrambling codes N can be set for different sending units. IDk , so that different initialization parameters can be obtained, and then different DMRS sequences can be obtained. IDk The value range can be 0 to 65535. It is the time slot number within the radio frame.

[0136] The base station can IDk Configured to the terminal, so that after receiving the PDCCH sent by the sending unit with relevant information k, the terminal can IDk To determine the initialization parameter corresponding to the sending unit, and then determine the DMRS sequence in the PDCCH sent by the sending unit.

[0137] In one embodiment, the DMRS sequence may be determined by referring to the following formula:

[0138]

[0139] Where l represents the symbol position in the time domain; c() is the GOLD sequence generation function, where c(2m) and c(2m+1) can be considered different GOLD sequences; and m is the DMRS sequence number. Based on this pseudo-random sequence, a DMRS sequence mapped to symbol l can be generated.

[0140] Figure 12 FIG. 1 is a schematic flow chart of another method for receiving a physical downlink control channel according to an embodiment of the present disclosure. Figure 12 As shown, the determining of the initialization parameters corresponding to the PDCCH sent by each of the sending units includes:

[0141] In step S1201, in response to the base station not configuring the scrambling code corresponding to the sending unit for the terminal, determining the scrambling code according to the identifier of the cell corresponding to the base station and the relevant information of the sending unit;

[0142] In step S1202, an initialization parameter in a pseudo-random sequence of a corresponding sending unit is determined according to the scrambling code.

[0143] In one embodiment, when the base station does not configure a scrambling code corresponding to the sending unit for the terminal, the terminal cannot determine the DMRS sequence based on the scrambling code configured by the base station. The base station and the terminal may pre-agree that in this case, the scrambling code is determined based on the information that can be obtained, for example, the scrambling code is determined based on the identifier of the cell corresponding to the base station and the relevant information of the sending unit.

[0144] For the terminal, after receiving the information sent by the base station (including but not limited to the PDCCH), the terminal can determine the identifier of the cell corresponding to the base station. In addition, when the base station sends the PDCCH through the sending unit, it can also carry relevant information of the sending unit. After receiving the PDCCH, the terminal can determine the relevant information of the sending unit that sends the PDCCH, thereby determining the scrambling code according to the identifier of the cell corresponding to the base station and the relevant information of the sending unit, and then determining the DMRS sequence according to the scrambling code.

[0145] In one embodiment, the initialization parameters can be determined by referring to the following formula:

[0146]

[0147] Where, l represents the position of the symbol in the time domain; The number of symbols contained in a time slot, for example, can be 14; is the time slot number within the radio frame; N ID For scrambling, is the identifier of the cell corresponding to the base station, and k is the relevant information of the sending unit. Based on this, for different sending units, the scrambling code N ID It can be different, that is, different scrambling codes N can be set for different sending units. ID , so that different initialization parameters can be obtained, and then different DMRS sequences can be obtained. ID The value range can be 0 to 65535.

[0148] Accordingly, after receiving the PDCCH sent by the sending unit with the relevant information k, the terminal can determine the scrambling code N according to the identifier of the cell corresponding to the base station and k. ID , thus according to the scrambling code N IDTo determine the initialization parameter corresponding to the sending unit, and then determine the DMRS sequence in the PDCCH sent by the sending unit.

[0149] Figure 13 FIG. 1 is a schematic flow chart of another method for receiving a physical downlink control channel according to an embodiment of the present disclosure. Figure 13 As shown, the determining of the initialization parameters corresponding to the PDCCH sent by each of the sending units includes:

[0150] In step S1301, a function for calculating the initialization parameter is determined based on the relevant information of the sending unit; for example, the function for calculating the initialization parameter can be determined based on the relevant information of the sending unit, the number of symbols contained in the time slot, the position of the symbol, the time slot number in the radio frame, and the scrambling code;

[0151] In step S1302, the initialization parameter is calculated according to the function.

[0152] In one embodiment, the base station may adjust the function for calculating the initialization parameter. Specifically, the function for calculating the initialization parameter is determined according to the relevant information of the sending unit, the number of symbols included in the time slot, the position of the symbol, the time slot number in the radio frame, and the scrambling code. For example, the relevant information k of the sending unit is added to the above function in an additive relationship (other relationships may also be used, such as a multiplication relationship with the scrambling code). Then, the function for calculating the initialization parameter may be as follows:

[0153]

[0154] The meaning of each parameter in the function calculation formula is the same as Figure 11 and Figure 12 The parameters in the embodiment section will not be described here one by one!

[0155] Based on this, for different sending units, the relevant information k of the sending unit may be different, so that for different sending units, the function used to calculate the initialization parameter is different, then the calculated initialization parameters can be different, that is, for different sending units, different initialization parameters can be obtained, and then different DMRS sequences can be obtained.

[0156] For the terminal, after receiving the PDCCH sent by the sending unit, it can also obtain relevant information of the sending unit. Then, the function used to calculate the initialization parameters can be determined based on the relevant information of the sending unit, and the initialization parameters corresponding to the sending unit can be calculated based on the function, thereby determining the DMRS sequence in the PDCCH sent by the sending unit.

[0157] Figure 14FIG. 1 is a schematic flow chart of another method for receiving a physical downlink control channel according to an embodiment of the present disclosure. Figure 14 As shown, the receiving, by the multiple receiving units, the PDCCHs sent by the multiple sending units in the base station includes:

[0158] In step S1401, PDCCHs sent by multiple sending units in a base station are received by the multiple receiving units in the same time-frequency resources.

[0159] In one embodiment, multiple sending units can send PDCCH to the terminal in the same time-frequency resources, that is, multiple sending units can use spatial division multiplexing SDM. Accordingly, the terminal can receive multiple PDCCHs sent by the base station in the same time-frequency resources through multiple receiving units. Although multiple PDCCHs are received in the same time-frequency resources, the DMRS sequences in different PDCCHs are different. Therefore, it can be ensured that the terminal demodulates the PDCCHs corresponding to different DMRS sequences based on different DMRS sequences.

[0160] Optionally, the PDCCHs received by multiple receiving units in the terminal correspond to the same DMRS port.

[0161] In one embodiment, multiple sending units in the base station may send PDCCHs to the terminal on the same DMRS port (eg, port 2000). Accordingly, the PDCCHs received by multiple receiving units in the terminal correspond to the same DMRS port.

[0162] This ensures that the current protocol requirement for PDCCHs to support only single-port transmission is met. The different DMRS sequences in the multiple PDCCHs sent by multiple transmitting units can be considered to be sent on multiple non-orthogonal (also known as quasi-orthogonal) DMRS ports. Although the transmitted DMRS sequences are different, the mapping locations in the time and frequency domains are the same.

[0163] Figure 15 FIG. 1 is a schematic flow chart of another method for receiving a physical downlink control channel according to an embodiment of the present disclosure. Figure 15 As shown, the method further includes:

[0164] In step S1501, DCI is obtained from each of the PDCCHs, wherein the DCI in each of the PDCCHs is the same.

[0165] In one embodiment, the DCI in the PDCCH sent by each transmitting unit in the base station to the terminal can be the same. Then, after receiving the PDCCH, the terminal can obtain the same DCI from each PDCCH. Accordingly, even if the communication link between a transmitting unit among the multiple transmitting units and the terminal is affected by reasons such as obstruction or deep fading, since the communication link between other transmitting units among the multiple transmitting units and the terminal still exists to send the PDCCH, the effectiveness of the PDCCH transmission link can be improved, ensuring higher reception reliability, allowing the terminal to obtain DCI from the PDCCH.

[0166] Figure 16 FIG. 1 is a schematic flow chart of another method for receiving a physical downlink control channel according to an embodiment of the present disclosure. Figure 16 As shown, the method further includes:

[0167] In step S1601, partial information of DCI is obtained from each of the PDCCHs;

[0168] In step S1602, a complete DCI is determined according to the partial information of the DCI obtained from each of the PDCCHs.

[0169] In one embodiment, the PDCCH sent by each transmitting unit in the terminal to the terminal may carry partial DCI information, and the partial DCI information carried in the PDCCHs sent by multiple transmitting units to the terminal may constitute a complete DCI. After receiving multiple PDCCHs, the terminal may obtain partial DCI information from each PDCCH, and then assemble the partial DCI information obtained from each PDCCH into a complete DCI.

[0170] For example, for three sending units, a complete DCI can be divided into three parts after encoding, wherein the first part is carried by the PDCCH sent by the first sending unit, the second part is carried by the PDCCH sent by the second sending unit, and the third part is carried by the PDCCH sent by the third sending unit. Accordingly, the flexibility of sending DCI can be improved, and even when the amount of DCI data is large, the DCI can be divided into multiple parts with smaller data amounts and sent separately.

[0171] After receiving the PDCCHs of the three transmission units, the terminal can obtain partial information of three DCIs from the PDCCHs sent by the three transmission units, and then combine the partial information of the three DCIs into a complete DCI.

[0172] Optionally, the sending unit includes at least one of the following:

[0173] Transmission receiving point, antenna panel.

[0174] Corresponding to the aforementioned embodiments of the physical downlink control channel sending method and the physical downlink control channel receiving method, the present disclosure also provides embodiments of a physical downlink control channel sending device and a physical downlink control channel receiving device.

[0175] Figure 17 This is a schematic block diagram of a physical downlink control channel transmitting apparatus according to an embodiment of the present disclosure. The physical downlink control channel transmitting apparatus shown in this embodiment can be applicable to base stations, including but not limited to base stations in communication systems such as 5G base stations and 6G base stations. The base station can communicate with terminals acting as user equipment, including but not limited to electronic devices such as mobile phones, tablets, wearable devices, sensors, and IoT devices. In one embodiment, the terminal can be a terminal to which the physical downlink control channel receiving apparatus described in any subsequent embodiment is applicable.

[0176] In one embodiment, the base station is provided with multiple transmitting units, which may be antenna panels or transmission receiving points (TRPs). The base station may choose to transmit the PDCCH via multiple transmitting units or select a single transmitting unit to transmit the PDCCH, and the specific configuration may be based on the needs of the base station.

[0177] like Figure 17 As shown, the physical downlink control channel sending device may include:

[0178] The downlink sending module 1701 is configured to send a physical downlink control channel PDCCH to a terminal through multiple sending units, wherein the demodulation reference signal DMRS sequences of the PDCCH sent by different sending units are different.

[0179] Figure 18 FIG. 1 is a schematic block diagram of another physical downlink control channel sending device according to an embodiment of the present disclosure. Figure 18 As shown, the device also includes:

[0180] A parameter determination module 1801 is configured to determine initialization parameters for each of the sending units respectively;

[0181] The DMRS determination module 1802 is configured to determine the DMRS sequence of the PDCCH sent by the sending unit according to the initialization parameter and the pseudo-random sequence.

[0182] Optionally, the needle parameter determination module is configured to determine different scrambling codes for different sending units; determine an initialization parameter in a pseudo-random sequence of a corresponding sending unit according to the scrambling code; and configure the scrambling code to the terminal.

[0183] Optionally, the needle parameter determination module is configured to determine the scrambling code according to the identifier of the cell corresponding to the base station and the relevant information of the sending unit in response to not configuring the scrambling code corresponding to the sending unit for the terminal; and determine the initialization parameter in the pseudo-random sequence of the corresponding sending unit according to the scrambling code.

[0184] Optionally, the needle parameter determination module is configured to determine a function for calculating the initialization parameter according to relevant information of the sending unit.

[0185] Optionally, the downlink sending module is configured to send the PDCCH to the terminal through multiple sending units in the same time-frequency resources.

[0186] Optionally, the downlink sending module is configured to send the PDCCH to the terminal through multiple sending units on the same DMRS port.

[0187] Optionally, the downlink control information DCI in the PDCCH sent by each of the sending units to the terminal is the same.

[0188] Optionally, the PDCCH sent by each sending unit to the terminal carries partial information of the DCI, and the partial information of the DCI carried in the PDCCHs sent by the multiple sending units to the terminal constitutes a complete DCI.

[0189] Optionally, the sending unit includes at least one of the following:

[0190] Transmission receiving point, antenna panel.

[0191] Figure 19 This is a schematic block diagram of a physical downlink control channel receiving apparatus according to an embodiment of the present disclosure. The physical downlink control channel receiving method illustrated in this embodiment can be applied to terminals, including but not limited to electronic devices such as mobile phones, tablets, wearable devices, sensors, and IoT devices. The terminal can communicate with a base station as a user equipment, including but not limited to base stations in communication systems such as 5G base stations and 6G base stations. In one embodiment, the base station can be a base station to which the physical downlink control channel transmitting apparatus described in any of the above embodiments is applicable.

[0192] In one embodiment, the terminal may be provided with multiple receiving units, such as multiple receiving antennas, and each receiving antenna may receive a downlink control channel sent by the base station.

[0193] like Figure 19 As shown, the physical downlink control channel receiving device may include:

[0194] The downlink receiving module 1901 is configured to receive, through the multiple receiving units, PDCCHs sent by multiple sending units in a base station, wherein the demodulation reference signal DMRS sequences of the PDCCHs sent by different sending units are different.

[0195] Figure 20 FIG. 1 is a schematic block diagram of another physical downlink control channel receiving device according to an embodiment of the present disclosure. Figure 20 As shown, the device also includes:

[0196] The parameter determination module 1902 is configured to determine initialization parameters corresponding to the PDCCH sent by each of the sending units;

[0197] The DMRS determination module 1903 is configured to determine the DMRS sequence of the PDCCH sent by the corresponding sending unit according to the initialization parameter and the pseudo-random sequence.

[0198] Optionally, the parameter determination module is configured to determine the scrambling code corresponding to each of the sending units based on the configuration information sent by the base station, wherein different sending units correspond to different scrambling codes; and determine the initialization parameter in the pseudo-random sequence of the corresponding sending unit based on the scrambling code.

[0199] Optionally, the parameter determination module is configured to, in response to the base station not configuring the scrambling code corresponding to the sending unit for the terminal, determine the scrambling code according to the identifier of the cell corresponding to the base station and the relevant information of the sending unit; and determine the initialization parameter in the pseudo-random sequence of the corresponding sending unit according to the scrambling code.

[0200] Optionally, the parameter determination module is configured to determine a function for calculating the initialization parameter according to relevant information of the sending unit; and calculate the initialization parameter according to the function.

[0201] Optionally, the downlink receiving module is configured to receive PDCCHs sent by multiple sending units in the base station through the multiple receiving units in the same time-frequency resources.

[0202] Optionally, the PDCCHs received by multiple receiving units in the terminal correspond to the same DMRS port.

[0203] Figure 21 FIG. 1 is a schematic block diagram of another physical downlink control channel receiving device according to an embodiment of the present disclosure. Figure 21 As shown, the device also includes:

[0204] The first acquisition module 2101 is configured to acquire DCI from each of the PDCCHs, wherein the DCI in each of the PDCCHs is the same.

[0205] Figure 22 FIG. 1 is a schematic block diagram of another physical downlink control channel receiving device according to an embodiment of the present disclosure. Figure 22 As shown, the device also includes:

[0206] The second acquisition module 2201 is configured to acquire partial information of the DCI from each of the PDCCHs;

[0207] The DCI determining module 2202 is configured to determine a complete DCI according to the partial information of the DCI obtained from each of the PDCCHs.

[0208] Optionally, the sending unit includes at least one of the following:

[0209] Transmission receiving point, antenna panel.

[0210] Regarding the apparatus in the above embodiments, the specific manner in which each module performs operations has been described in detail in the embodiments of the relevant methods and will not be elaborated on here.

[0211] For the device embodiment, since it basically corresponds to the method embodiment, the relevant parts can be referred to the partial description of the method embodiment. The device embodiment described above is merely illustrative, wherein the modules described as separate components may or may not be physically separated, and the components displayed as modules may or may not be physical modules, that is, they may be located in one place, or they may be distributed on multiple network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Those of ordinary skill in the art can understand and implement it without paying any creative work.

[0212] The embodiment of the present disclosure also provides an electronic device

[0213] processor;

[0214] a memory for storing processor-executable instructions;

[0215] The processor is configured to execute the PDCCH sending method described in any one of the above embodiments.

[0216] The embodiment of the present disclosure also provides an electronic device

[0217] processor;

[0218] a memory for storing processor-executable instructions;

[0219] The processor is configured to execute the PDCCH receiving method described in any one of the above embodiments.

[0220] An embodiment of the present disclosure further provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the PDCCH sending method described in any of the above embodiments.

[0221] An embodiment of the present disclosure further provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the PDCCH receiving method described in any of the above embodiments.

[0222] like Figure 23 As shown, Figure 23 FIG2 is a schematic block diagram of an apparatus 2300 for receiving a PDCCH according to an embodiment of the present disclosure. The apparatus 2300 may be provided as a base station. Figure 23 Apparatus 2300 includes a processing component 2322, a wireless transmit / receive component 2324, an antenna component 2326, and a signal processing portion specific to a wireless interface. Processing component 2322 may further include one or more processors. One of the processors in processing component 2322 may be configured to implement the PDCCH transmission method described in any of the above embodiments.

[0223] Figure 24 2 is a schematic block diagram of an apparatus 2400 for PDCCH reception according to an embodiment of the present disclosure. For example, apparatus 2400 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0224] Reference Figure 24 , device 2400 may include one or more of the following components: a processing component 2402 , a memory 2404 , a power component 2406 , a multimedia component 2408 , an audio component 2410 , an input / output (I / O) interface 2412 , a sensor component 2414 , and a communication component 2416 .

[0225] Processing component 2402 generally controls the overall operation of device 2400, such as operations associated with display, phone calls, data communications, camera operation, and recording operations. Processing component 2402 may include one or more processors 2420 to execute instructions to perform all or part of the steps of the PDCCH reception method described above. In addition, processing component 2402 may include one or more modules to facilitate interaction between processing component 2402 and other components. For example, processing component 2402 may include a multimedia module to facilitate interaction between multimedia component 2408 and processing component 2402.

[0226] The memory 2404 is configured to store various types of data to support the operations of the device 2400. Examples of such data include instructions for any application or method operating on the device 2400, contact data, phone book data, messages, pictures, videos, etc. The memory 2404 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 memory, flash memory, magnetic disk, or optical disk.

[0227] The power supply component 2406 provides power to the various components of the device 2400. The power supply component 2406 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to the device 2400.

[0228] The multimedia component 2408 includes a screen that provides an output interface between the device 2400 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 touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, slides, and gestures on the touch panel. The touch sensor can not only sense the boundaries of the touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 2408 includes a front camera and / or a rear camera. When the device 2400 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have focal length and optical zoom capabilities.

[0229] The audio component 2410 is configured to output and / or input audio signals. For example, the audio component 2410 includes a microphone (MIC) that is configured to receive external audio signals when the device 2400 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal can be further stored in the memory 2404 or transmitted via the communication component 2416. In some embodiments, the audio component 2410 also includes a speaker for outputting audio signals.

[0230] I / O interface 2412 provides an interface between processing component 2402 and peripheral interface modules, such as a keyboard, click wheel, buttons, etc. These buttons may include but are not limited to: a home button, volume buttons, a start button, and a lock button.

[0231] The sensor assembly 2414 includes one or more sensors for providing various aspects of the status assessment of the device 2400. For example, the sensor assembly 2414 can detect the open / closed state of the device 2400, the relative positioning of components, such as the display and keypad of the device 2400. The sensor assembly 2414 can also detect changes in the position of the device 2400 or a component of the device 2400, the presence or absence of user contact with the device 2400, the orientation or acceleration / deceleration of the device 2400, and changes in the temperature of the device 2400. The sensor assembly 2414 can include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 2414 can also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 2414 can also include an accelerometer, a gyroscope, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0232] The communication component 2416 is configured to facilitate wired or wireless communication between the device 2400 and other devices. The device 2400 can access a wireless network based on a communication standard, such as WiFi, 2G or 3G, 4G LTE, 5G NR or a combination thereof. In an exemplary embodiment, the communication component 2416 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 2416 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0233] In an exemplary embodiment, the apparatus 2400 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 above-mentioned PDCCH reception method.

[0234] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is further provided, such as a memory 2404 including instructions. The instructions may be executed by the processor 2420 of the apparatus 2400 to implement the above-described PDCCH reception method. For example, the non-transitory computer-readable storage medium may be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, or the like.

[0235] Other embodiments of the present disclosure will readily occur to those skilled in the art after considering the specification and practicing the disclosure herein. This disclosure is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the following claims.

[0236] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

[0237] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. The terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements that are not explicitly listed, or also includes elements that are inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a..." does not exclude the presence of other identical elements in the process, method, article or device that includes the element.

[0238] The above is a detailed introduction to the methods and devices provided in the embodiments of the present disclosure. Specific examples are used herein to illustrate the principles and implementation methods of the present disclosure. The description of the above embodiments is only used to help understand the methods and core ideas of the present disclosure. At the same time, for those skilled in the art, according to the ideas of the present disclosure, there may be changes in the specific implementation methods and application scopes. In summary, the contents of this specification should not be understood as limiting the present disclosure.

Claims

1. A method for transmitting a physical downlink control channel, characterized in that: Applicable to a base station, wherein a plurality of sending units are provided in the base station, the method comprising: Sending a physical downlink control channel PDCCH to the terminal through multiple sending units on the same DMRS port, wherein the demodulation reference signal DMRS sequences of the PDCCHs sent by different sending units are different, and the mapping positions in the time domain and the frequency domain are the same; initialization parameters respectively determined for each of the sending units; Determining a DMRS sequence of a PDCCH sent by the sending unit according to the initialization parameter and the pseudo-random sequence; the initialization parameter determined for each sending unit includes: Determining different scrambling codes for different sending units, where the scrambling codes are determined based on relevant information of the sending units; determining an initialization parameter in a pseudo-random sequence of a corresponding sending unit according to the scrambling code; The scrambling code is configured for the terminal.

2. The method according to claim 1, characterized in that The sending of the PDCCH to the terminal by using multiple sending units includes: The PDCCH is sent to the terminal via multiple sending units using the same time-frequency resources.

3. The method according to claim 1, characterized in that The downlink control information DCI in the PDCCH sent by each sending unit to the terminal is the same.

4. The method according to claim 1, wherein The PDCCH sent by each sending unit to the terminal carries partial information of the DCI, and the partial information of the DCI carried in the PDCCHs sent by the multiple sending units to the terminal constitutes a complete DCI.

5. The method according to claim 1, characterized in that The sending unit includes at least one of the following: Transmission receiving point, antenna panel.

6. A physical downlink control channel receiving method, characterized in that: Applicable to a terminal, wherein a plurality of receiving units are provided in the terminal, the method comprising: Receiving, by the multiple receiving units, PDCCHs sent by multiple sending units in a base station on the same DMRS port, wherein demodulation reference signal DMRS sequences of the PDCCHs sent by different sending units are different, and mapping positions in the time domain and the frequency domain are the same; Determining initialization parameters corresponding to the PDCCH sent by each of the sending units; Determining the DMRS sequence of the PDCCH sent by the corresponding sending unit according to the initialization parameter and the pseudo-random sequence; the determining the initialization parameter corresponding to each PDCCH sent by the sending unit includes: Determine a scrambling code corresponding to each of the sending units according to the configuration information sent by the base station, wherein different sending units correspond to different scrambling codes, and the scrambling code is determined based on relevant information of the sending unit; An initialization parameter in a pseudo-random sequence of a corresponding sending unit is determined according to the scrambling code.

7. The method according to claim 6, characterized in that The receiving, by the multiple receiving units, the PDCCH sent by the multiple sending units in the base station includes: The PDCCHs sent by the multiple sending units in the base station are received by the multiple receiving units in the same time-frequency resources.

8. The method according to claim 6, characterized in that The method further comprises: DCI is obtained from each of the PDCCHs, wherein the DCI in each of the PDCCHs is the same.

9. The method according to claim 6, characterized in that The method further comprises: Obtaining partial information of the DCI from each of the PDCCHs; A complete DCI is determined according to the partial information of the DCI obtained from each of the PDCCHs.

10. The method according to claim 6, characterized in that The sending unit includes at least one of the following: Transmission receiving point, antenna panel.

11. A physical downlink control channel sending device, characterized in that: Applicable to a base station, wherein a plurality of sending units are provided in the base station, the apparatus includes: A downlink sending module is configured to send a physical downlink control channel (PDCCH) to a terminal through multiple sending units on the same DMRS port, wherein the demodulation reference signal (DMRS) sequences of the PDCCHs sent by different sending units are different, and the mapping positions in the time domain and the frequency domain are the same; a parameter determination module, configured to determine initialization parameters for each of the sending units; The DMRS determination module is configured to determine the DMRS sequence of the PDCCH sent by the sending unit according to the initialization parameter and the pseudo-random sequence; the parameter determination module is configured to determine different scrambling codes for different sending units, where the scrambling codes are determined based on relevant information of the sending unit; determine the initialization parameter in the pseudo-random sequence of the corresponding sending unit according to the scrambling code; and configure the scrambling code to the terminal.

12. A physical downlink control channel receiving device, characterized in that: Applicable to a terminal, wherein a plurality of receiving units are provided in the terminal, the device comprising: a downlink receiving module, configured to receive, through the multiple receiving units, PDCCHs sent by multiple sending units in the base station on the same DMRS port, wherein the demodulation reference signal DMRS sequences of the PDCCHs sent by different sending units are different, and the mapping positions in the time domain and the frequency domain are the same; a parameter determination module, configured to determine initialization parameters corresponding to the PDCCH sent by each of the sending units; The DMRS determination module is configured to determine the DMRS sequence of the PDCCH sent by the corresponding sending unit according to the initialization parameter and the pseudo-random sequence; the parameter determination module is configured to determine the scrambling code corresponding to each sending unit according to the configuration information sent by the base station, wherein different sending units correspond to different scrambling codes, and the scrambling code is determined based on the relevant information of the sending unit; and the initialization parameter in the pseudo-random sequence of the corresponding sending unit is determined according to the scrambling code.

13. An electronic device, characterized in that: include: processor; a memory for storing processor-executable instructions; The processor is configured to execute the physical downlink control channel sending method according to any one of claims 1 to 5.

14. An electronic device, characterized in that: include: processor; a memory for storing processor-executable instructions; The processor is configured to execute the physical downlink control channel receiving method according to any one of claims 6 to 10.

15. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps of the physical downlink control channel sending method according to any one of claims 1 to 5 are implemented.

16. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps of the physical downlink control channel receiving method according to any one of claims 6 to 10 are performed.

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