Communication indication methods, terminals and network-side equipment

Abstract

This application discloses a communication indication method, a terminal, and a network-side device, belonging to the field of communication. The communication indication method of this application includes: when a first terminal receives a first DCI, it determines, based on the target object and / or the first DCI, whether there is a PDSCH DMRS port of a second terminal that is multiplexed with the PDSCH DMRS port of the first terminal in an FD-CDM manner; wherein, the target object is determined by the first terminal based on N first objects, the first objects include a first set or a first array, the first set and / or the first array is determined based on a first table, the first table configures the correspondence between the field value of the antenna port field and the first information and the second information, the first information is the PDSCH DMRS port assigned to the first terminal by the network-side device, and the second information is the multiplexing relationship between the PDSCH and the PDSCH DMRS port; the second terminal is a terminal other than the first terminal, and N is an integer greater than or equal to 1.

Description

Technical Field

[0001] This application belongs to the field of communication technology, and specifically relates to a communication instruction method, terminal, and network-side equipment. Background Technology

[0002] In order to support higher transmission rates and a wider range of service types, further research is needed on mobile communications in frequency bands above 52.6 GHz.

[0003] Among them, when the physical downlink shared channel (PDSCH) demodulation reference signal (DMRS) of different terminals is carried on the same multiple subcarriers and orthogonally transmitted through frequency-domain code division multiplexing (FD-CDM), how to enable the terminal to clearly know whether the FD-CDM on the PDSCH DMRS port is "off" or "on" to ensure the reliability of wireless communication has become an urgent technical problem to be solved in this field. Summary of the Invention

[0004] This application provides a communication indication method, a terminal, and a network-side device that enable the terminal to clearly determine whether the FD-CDM on the PDSCH DMRS port is "off" or "on".

[0005] In a first aspect, a communication indication method is provided, comprising: upon receiving a first DCI, a first terminal determines, based on a target object and / or the first DCI, whether a second terminal's PDSCH DMRS port is multiplexed with the first terminal's PDSCH DMRS port via FD-CDM; wherein the target object is determined by the first terminal based on N first objects, the first objects including a first set or a first array, the first set and / or the first array being determined based on a first table, the first table configuring a correspondence between antenna port field values ​​and first information and second information, the first information being a PDSCH DMRS port assigned to the first terminal by a network-side device, and the second information being a multiplexing relationship between PDSCH and PDSCH DMRS ports; the second terminal is a terminal other than the first terminal, and N is an integer greater than or equal to 1.

[0006] Secondly, a communication indication method is provided, comprising: a network-side device sending a first DCI to a first terminal, wherein the first DCI is used by the first terminal to determine whether there is a second terminal's PDSCH DMRS port multiplexed with the first terminal's PDSCH DMRS port via FD-CDM, and the second terminal is a terminal other than the first terminal.

[0007] Thirdly, a communication indication device is provided, applied to a first terminal. The device includes: a determining module, configured to determine, upon receiving a first DCI, whether the PDSCH DMRS port of a second terminal is multiplexed with the PDSCH DMRS port of the first terminal via FD-CDM, based on the target object and / or the first DCI; wherein the target object is determined by the first terminal based on N first objects, the first objects including a first set or a first array, the first set and / or the first array being determined based on a first table, the first table configuring the correspondence between the field values ​​of the antenna port field and first information and second information, the first information being the PDSCH DMRS port assigned to the first terminal by the network-side device, and the second information being the multiplexing relationship between the PDSCH and the PDSCH DMRS port; the second terminal is a terminal other than the first terminal, and N is an integer greater than or equal to 1.

[0008] Fourthly, a communication indication device is provided, comprising: a transmitting module, configured to transmit first downlink control information (DCI) to a first terminal, wherein the first DCI is used by the first terminal to determine whether a second terminal's PDSCHDMRS port is multiplexed with the first terminal's PDSCHDMRS port via FD-CDM, and the second terminal is a terminal other than the first terminal.

[0009] Fifthly, a terminal is provided, the terminal including a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the method described in the first aspect.

[0010] In a sixth aspect, a terminal is provided, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the steps of the method described in the first aspect, or to implement the steps of the method described in the third aspect.

[0011] In a seventh aspect, a network-side device is provided, the network-side device including a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the method as described in the third aspect.

[0012] Eighthly, a network-side device is provided, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the steps of the method described in the third aspect.

[0013] A ninth aspect provides a readable storage medium on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method described in the first aspect, or implement the steps of the method described in the third aspect.

[0014] In a tenth aspect, a chip is provided, the chip including a processor and a communication interface coupled to the processor, the processor being configured to run a program or instructions to implement the steps of the method described in the first aspect, or to implement the steps of the method described in the third aspect.

[0015] Eleventhly, a computer program product is provided, the computer program product being stored in a non-transient storage medium, the program product being executed by at least one processor to implement the steps of the method as described in the first aspect, or to implement the steps of the method as described in the third aspect.

[0016] In this embodiment, the first terminal determines whether the PDSCH DMRS port of the second terminal is multiplexed with the PDSCH DMRS port of the first terminal via FD-CDM based on the target object and / or the received first DCI. This enables the first terminal to clearly know whether the FD-CDM on the PDSCH DMRS port is "off" or "on", thereby ensuring the reliability of wireless communication. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a wireless communication system provided in an exemplary embodiment of this application.

[0018] Figure 2 This is a flowchart illustrating a method for communication instruction provided in an exemplary embodiment of this application.

[0019] Figure 3 This is a flowchart illustrating a method for communication instruction provided in another exemplary embodiment of this application.

[0020] Figure 4This is a flowchart illustrating a communication instruction method provided in yet another exemplary embodiment of this application.

[0021] Figure 5 This is a schematic diagram of the structure of a communication instruction device provided in an exemplary embodiment of this application.

[0022] Figure 6 This is a schematic diagram of the structure of a communication indication device provided in an exemplary embodiment of this application.

[0023] Figure 7 This is a schematic diagram of the structure of a terminal provided in an exemplary embodiment of this application.

[0024] Figure 8 This is a schematic diagram of the structure of a network-side device provided in an exemplary embodiment of this application. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0026] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0027] It is worth noting that the technologies described in this application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in this application are often used interchangeably, and the described technologies can be used with the systems and radio technologies mentioned above, as well as with other systems and radio technologies. The following description describes New Radio (NR) systems for illustrative purposes, and the term NR is used in most of the following description; however, these technologies can also be applied to applications other than NR systems, such as 6th generation (6G) radio systems. th Generation 6G communication system.

[0028] Figure 1This diagram illustrates the structure of a wireless communication system applicable to embodiments of this application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 can also be referred to as a terminal device or user equipment (UE). The terminal 11 can be a mobile phone, tablet computer, laptop computer, personal digital assistant (PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile internet device (MID), wearable device, vehicle-mounted device (VUE), pedestrian terminal (PUE), etc. Wearable devices include smartwatches, wristbands, headphones, glasses, etc. It should be noted that this application does not limit the specific type of terminal 11. Network-side device 12 can be a base station or a core network. The base station can be referred to as a node B, evolved node B, access point, base transceiver station (BTS), radio base station, radio transceiver, basic service set (BSS), extended service set (ESS), B node, evolved B node (eNB), home B node, home evolved B node, WLAN access point, WiFi node, transmitting and receiving point (TRP), or any other suitable term in the field, as long as the same technical effect is achieved. The base station is not limited to specific technical terms. It should be noted that in this application embodiment, only the base station in the NR system is used as an example, but the specific type of base station is not limited.

[0029] The technical solutions provided in this application will be described in detail below with reference to the accompanying drawings and through some embodiments and application scenarios.

[0030] like Figure 2 The diagram shown is a flowchart of a communication instruction method 200 provided in an exemplary embodiment of this application. This method 200 can be executed by a terminal, but is not limited to that executed by a terminal; specifically, it can be executed by hardware and / or software installed in the terminal. In this embodiment, the method 200 may include at least the following steps.

[0031] S210, upon receiving the first DCI, the first terminal determines, based on the target object and / or the first DCI, whether the PDSCH DMRS port of the second terminal is multiplexed with the PDSCH DMRS port of the first terminal via FD-CDM.

[0032] The second terminal is any terminal other than the first terminal.

[0033] The target object is determined by the first terminal based on N first objects, where N is an integer greater than or equal to 1, such as 1, 2, 3, 4, etc. The first object includes a first set or a first array, which is determined based on a first table. The first table configures the correspondence between the field values ​​(or values) of the antenna port(s) field and first information and second information. The first information is the PDSCH DMRS port assigned to the first terminal by the network-side device, and the second information is the multiplexing relationship between the PDSCH and PDSCH DMRS ports.

[0034] It is understood that for PDSCH downlink control information (DCI), when the DCI format is format1_1, the PDSCH DCI (i.e., the first DCI) contains an antenna port field. The value of this antenna port field can indicate which DMRS ports are used by the scheduled terminal, and which CDM groups' corresponding time-frequency resources cannot be used for PDSCH transmission, etc. In other words, the antenna port field in the first table given in this embodiment corresponds to the antenna port field in DCI format1_1. Therefore, network-side equipment (such as base stations) can flexibly inform the first terminal through the PDSCH DCI (i.e., the first DCI) whether the FD-CDM on the first terminal's PDSCH DMRS port is "off" or "on." That is, the first terminal can determine (or believe) whether the second terminal's physical downlink shared channel PDSCH demodulation reference signal DMRS port and the first terminal's PDSCH DMRS port are multiplexed using frequency domain code division multiplexing (FD-CDM). It is understood that "whether it does not exist" in this embodiment can be interpreted as either non-existent or possibly existing.

[0035] Of course, in this case, depending on the different communication scenarios, the first table can be shown as Table 1, Table 2, Table 3 or Table 4 below. Table 1 is the first table when the communication scenario is Antenna port(s) (1000+DMRS port), DMRS type is 1 (dmrs-Type=1), and the maximum length of the OFDM symbol of the front-end DMRS is a single symbol (maxLength=1). Table 2 is the first table when the communication scenario is Antenna port(s) (1000+DMRS port), dmrs-Type=1, and the maximum length of the Orthogonal Frequency Division Multiplexing (OFDM) symbol of the front-end DMRS is a double symbol (maxLength=2). Table 3 is the first table when the communication scenario is Antenna port(s) (1000+DMRS port), DMRS type is 2 (dmrs-Type=2), and maxLength=1. Table 4 is the first table when the communication scenario is Antenna port(s) (1000+DMRS port), dmrs-Type=2, and maxLength=2.

[0036] Specifically, for single-symbol DMRS in PDSCH DMRS type-1, port groups {1000, 1001} and {1002, 1003} are orthogonally multiplexed through FD-CDM; for double-symbol DMRS in PDSCH DMRS type-1, port groups {1000, 1001}, {1002, 1003}, {1004, 1005}, and {1006, 1007} ​​are orthogonally multiplexed through FD-CDM.

[0037] For single-symbol DMRS in PDSCH DMRS type-2, port groups {1000, 1001}, {1002, 1003}, and {1004, 1005} are all orthogonally multiplexed using FD-CDM. For double-symbol DMRS in PDSCH DMRS type-2, port groups {1000, 1001}, {1002, 1003}, {1004, 1005}, {1006, 1007}, {1008, 1009}, and {1010, 1011} are all orthogonally multiplexed using FD-CDM.

[0038] Additionally, the third piece of information in Tables 2 and 4 is the number of OFDM symbols in the front-load DMRS.

[0039] Table 1

[0040]

[0041] Table 2

[0042]

[0043]

[0044] Table 3

[0045]

[0046] Table 4

[0047]

[0048]

[0049] Based on the descriptions in Tables 1 to 4 above, as an optional implementation, the configuration method of the first object may include at least one of the following (11)-(12).

[0050] (11) Configured via the second Radio Resource Control (RRC) signaling.

[0051] Optionally, the configuration method using the second RRC signaling in this embodiment may include: indicating N first objects respectively through N third indication fields included in the second RRC signaling; wherein, the N third indication fields may be newly added indication fields in the second RRC signaling.

[0052] For example, the network-side device (such as a base station) determines N first sets S(i) based on the aforementioned first list, and adds N third indication fields F(i) in the second RRC signaling, each third indication field F(i) representing a first set S(i), so that the first terminal can determine S(i) based on the second RRC signaling, and / or configure the first array A(i) based on S(i).

[0053] For example, the network-side device can also determine N first arrays A(i) based on the aforementioned first list, and add N third indication fields F(i) in the second RRC signaling, each third indication field F(i) representing a first array A(i), so that the first terminal can determine A(i) based on the second RRC signaling.

[0054] (12) Protocol predefined.

[0055] For example, N first arrays A(i) can be predefined through a protocol.

[0056] For example, N first sets S(i) can be predefined through the protocol, and the first terminal can then configure A(i) according to the first set S(i).

[0057] Optionally, where i = 0, 1, ..., N-1, the elements in the first set S(i) are unordered, while the elements in the first array A(i) are ordered. That is, the difference between the first set S(i) and the first array A(i) is that the elements in A(i) are ordered relative to the elements in S(i). Based on this, when determining A(i) from S(i), regardless of the determination method, as long as the elements in the resulting A(i) have an ordered characteristic and belong to S(i), it is acceptable. In other words, this application does not restrict the method of determining A(i) from S(i).

[0058] For example, assuming the first object is implemented through the second RRC signaling configuration and N=7, then F(i), S(i), and A(i) can be as follows.

[0059] F(0), S(0), A(0) correspond to "dmrs-Type=1, maxLength=1".

[0060] F(1), S(1), and A(1) correspond to "dmrs-Type=1, maxLength=2, one codeword".

[0061] F(2), S(2), and A(2) correspond to "dmrs-Type=1, maxLength=2, two codewords".

[0062] F(3), S(3), and A(3) correspond to "dmrs-Type=2, maxLength=1, one codeword".

[0063] F(4), S(4), and A(4) correspond to "dmrs-Type=2, maxLength=1, two codewords".

[0064] F(5), S(5), and A(5) correspond to "dmrs-Type=2, maxLength=2, one codeword".

[0065] F(6), S(6), and A(6) correspond to "dmrs-Type=2, maxLength=2, two codewords".

[0066] Where F(0) = “antPortDisbaleFdCdmCfg0”, S(0) = {0, 1, 5, 6}, A(0) = [0, 1, 5, 6].

[0067] F(1)=“antPortDisbaleFdCdmCfg1”, S(1)={26}, A(1)=

[26] , …….

[0068] It is understood that this embodiment determines which field values ​​in the CDM group may be multiplexed by other terminals through FD-CDM based on the multiplexing relationship between PDSCH and PDSCH DMRS ports (i.e., first information) and the PDSCH DMRS ports configured by the network-side device for the first terminal (i.e., second information), and selects at least some field values ​​from the determined field values ​​to form the S(i).

[0069] For example, taking S(0) = {0, 1, 5, 6} determined according to Table 1 as an example, since the first information is 0 and the second information is 1 for the field value 0, the PDSCH DMRS port 1, which belongs to the same CDM group as PDSCH DMRS port 0, may also be multiplexed by other terminals through FD-CDM, so it can be used as an element in S(0). However, for the field value 2, since the first information is 0, 1 and the second information is 1, and PDSCH DMRS ports 0 and 1 belong to the same CDM group, the field value 2 cannot be used as an element in S(0). The process of determining whether other field values ​​can be used as elements in S(0) (or other S(i)) is similar to that of the aforementioned field values ​​0 and 2. To avoid repetition, it will not be repeated here.

[0070] It should be noted that, in addition to the aforementioned process for determining S(i), depending on the communication scenario, at least some of the field values ​​can be selected from the first table to form S(i). For example, taking Table 1 as an example, field values ​​1, 3, 5, and 7 can be selected to form S(0) = {1, 3, 5, 7}, etc. This embodiment does not impose any restrictions on this.

[0071] Optionally, depending on the different indication methods of the first DCI, such as the first terminal indicating through the field value of the antenna port field in the first DCI or the field value in the newly added indication field, the first terminal determines whether there is a PDSCH DMRS port of the second terminal that is multiplexed with the PDSCH DMRS port of the first terminal through FD-CDM, and there is no restriction on this.

[0072] In this embodiment, the first terminal determines whether the PDSCH DMRS port of the second terminal is multiplexed with the PDSCH DMRS port of the first terminal via FD-CDM through the target object and / or the received first DCI. This enables the first terminal to clearly know whether the FD-CDM on the PDSCH DMRS port is "off" or "on", thereby ensuring the reliability of wireless communication.

[0073] like Figure 3 The diagram shown is a flowchart illustrating a communication instruction method 300 provided in an exemplary embodiment of this application. This method 300 can be executed by, but is not limited to, a terminal, specifically by hardware and / or software installed in the terminal. In this embodiment, the method 300 may include at least the following steps.

[0074] S310, upon receiving the first DCI, the first terminal determines, based on the target object and / or the first DCI, whether the PDSCH DMRS port of the second terminal is multiplexed with the PDSCH DMRS port of the first terminal via FD-CDM.

[0075] Wherein, the target object is determined by the first terminal based on N first objects, the first object includes a first set or a first array, the first set and / or the first array is determined based on a first table, the first table is configured with the correspondence between the field value of the antenna port field and the first information and the second information, the first information is the PDSCH DMRS port assigned to the first terminal by the network side device, the second information is the multiplexing relationship between the PDSCH and the PDSCH DMRS port, the second terminal is a terminal other than the first terminal, and N is an integer greater than or equal to 1.

[0076] It is understood that, in addition to referring to the relevant description in method embodiment 200, as a possible implementation method, depending on the value of N, the step of determining the target object from N first objects in S310 may include any one of the following (21)-(22).

[0077] (21) When N is 1, the first object is determined as the target object.

[0078] It should be noted that if N equals 1, then the antenna port domain F(i), the first set S(i), or the first array A(i) corresponds to all PDSCH configurations and / or DMRS configurations. That is, when N equals 1, the first terminal can directly obtain the target object A (i*=0).

[0079] (22) When N is an integer greater than 1, the target object is determined from the N first objects according to the configuration of the PDSCH and / or the configuration of the DMRS.

[0080] It should be noted that if N is an integer greater than 1, then the antenna port domain F(i), the first set S(i), or the first array A(i) corresponds to one or more PDSCH configurations and / or DMRS configurations. That is, when N is an integer greater than 1, the first terminal can determine the corresponding target object A(i*) according to the current PDSCH configuration and / or DMRS configuration. For example, if N = 2, then the target object A(i*) is A(i* = 1).

[0081] As another possible implementation, in this embodiment, depending on the communication scenario, the implementation process of the first terminal determining whether there is a PDSCH DMRS port of the second terminal and the PDSCH DMRS port of the first terminal multiplexing through FD-CDM may also be different. This will be explained below in conjunction with methods 1 to 4.

[0082] Method 1

[0083] When the state of the antenna port domain in the first DCI is the target state, it is determined that there is no PDSCH DMRS port of the second terminal that can be multiplexed with the PDSCH DMRS port of the first terminal via FD-CDM. The target state includes at least a reserved state or other states besides the reserved state. For example, taking Table 1 as an example, some or all of the domain values ​​12-15 can be defined as predetermined values ​​or predetermined states. For example, the PDSCH DMRS port corresponding to the domain values ​​12-15 is defined as a state that can be multiplexed by other terminals via FD-CDM, or the PDSCH DMRS port corresponding to the domain values ​​12-15 is defined as a state that cannot be multiplexed by other terminals via FD-CDM, etc. There are no restrictions here.

[0084] Of course, in this embodiment, after the first terminal determines that there is no PDSCH DMRS port of the second terminal and the PDSCH DMRS port of the first terminal multiplexed in the FD-CDM manner, the configuration of the PDSCH DMRS port of the first terminal can be further determined according to the target object and the domain value of the antenna port domain of the first DCI.

[0085] For example, in one implementation, when the target object is a target set, the first terminal may further determine the target array based on the target set; calculate a first index based on the domain value of the antenna port field in the first DCI; determine a first element from the target array based on the first index; and determine the configuration corresponding to the first element as the configuration of the PDSCH DMRS port of the first terminal.

[0086] For example, in another implementation, when the target object is a target array, the terminal can calculate a first index based on the domain value of the antenna port field in the first DCI; determine a second element from the target array based on the first index; and determine the configuration corresponding to the second element as the configuration of the PDSCHDMRS port of the first terminal.

[0087] Optionally, the difference between the two implementation methods is that the target object in the latter implementation method is a target array, that is, the first terminal can directly determine the target array A(i*) from multiple first arrays; while the target object in the former implementation method is a target set, the first terminal needs to first determine the target set from multiple first sets, and then determine the target array A(i*) based on the target set. Apart from this, the implementation process of the two implementation methods is the same.

[0088] Based on the foregoing description of Method 1, the implementation process of Method 1 will be further explained below with examples.

[0089] For example, suppose the target object (i.e. the target array) is A(i*=0), and A(i*=0) corresponds to the PDSCHDMRS configuration as dmrs-Type=1, maxLength=1, and the length of A(i*=0) is 4. Since this length is less than or equal to the number of fields in Table 1 where the field value is "reserved", the first element in A(i*=0) corresponds to the first value (i.e., 12) of the "Antenna port(s)" field in Table 1 where the field value is "reserved", the second element in A(i*=0) corresponds to the value 13 of the "Antenna port(s)" field in Table 1, the third element in A(i*=0) corresponds to the value 14 of the "Antenna port(s)" field in Table 1, and the fourth element in A(i*=0) corresponds to the value 15 of the "Antenna port(s)" field in Table 1.

[0090] Based on this, when the first terminal detects that the value of the "Antenna port(s)" field in the PDSCH DCI is 14, the first terminal calculates the first index = the value of the "Antenna port(s)" field – the first value in Table 1 whose "Antenna port(s)" field is in the "reserved" state, i.e., the first index = 14 – 12 = 2. Then, based on the first index, the first element x selected from A(i = 0) is the third element in A(i* = 0). For example, if A(i* = 0) = [0, 1, 5, 6], then the first element x = 5. In this case, the first terminal can consider that the PDSCH DMRS port scheduled by the base station for the first terminal is the configuration corresponding to the value of 5 in the "Antenna port(s)" field, i.e., the base station has scheduled PDSCH DMRS port 2 for the first terminal, and no second terminal multiplexes these PDSCH DMRS ports using FD-CDM.

[0091] In addition, the determination process for the first terminal to believe that no second terminal is multiplexing these PDSCH DMRS ports via FD-CDM is as follows.

[0092] Assuming the PDSCH DMRS configuration is as shown in the left half of Table 2: dmrs-Type = 1, maxLength = 2, “One Codeword”, and the first array A(1) (i.e., N = 2) corresponds to the aforementioned configuration, then, since the number of “reserved” states of the “Antenna port(s)” field in the left half of Table 2 is 1, and the length of A(1) is 1, therefore, assuming A(1) =

[26] , at this time, if the value of the “Antenna port(s)” field is 31, the first terminal calculates the first index index = the value of the “Antenna port(s)” field – the first value of the “reserved” state of the “Antenna port(s)” field in the left half of Table 2, i.e., the first index index = 31 – 31 = 0, i.e., the first element in A(1) =

[26] , i.e., the first element x = 26, the configuration corresponding to this value is that the base station has scheduled PDSCH DMRS ports 0, 1, 4 for the terminal.

[0093] Furthermore, considering that for Double-symbol DMRS in dmrs-Type=1, port groups {0, 1} and {4, 5} are orthogonally multiplexed through FD-CDM, the first terminal can assume that the PDSCH DMRS ports 0 and 1 scheduled by the base station for the first terminal are orthogonally multiplexed through FD-CDM, but no second terminal uses PDSCH DMRS port 5.

[0094] In this implementation method 1, by using the existing antenna port(s) in the DCI signaling to indicate to the terminal whether there are no other terminals sharing time-frequency resources with the terminal's PDSCH DMRS port(s) via FD-CDM, the terminal can clearly know whether the FD-CDM on the PDSCH DMRS port is "off" or "on", thereby ensuring the reliability of wireless communication.

[0095] Furthermore, compared to related technologies that use unused antenna port fields (i.e., antenna port fields in the reserved state) for indication, this implementation 1 can overcome the problem in related technologies that the number of "reserved" field values ​​in the "Antennaport(s)" field of DCI is too small, thereby maximizing the ability of the base station to configure the "Antenna port(s)" field of DCI according to the DMRS scheduling needs, thus ensuring the flexibility of base station scheduling.

[0096] Method 2

[0097] If the value of the antenna port field in the first DCI belongs to the target object and the value of the first indication field in the first DCI is a first predetermined value, the first terminal determines that there is no PDSCH DMRS port of the second terminal multiplexed with the PDSCH DMRS port of the first terminal via FD-CDM; wherein, the first indication field is specifically used to indicate whether there is no PDSCH DMRS port of the second terminal multiplexed with the PDSCH DMRS port of the first terminal via FD-CDM.

[0098] It can be understood that the first indication field can be a newly added indication field in the first DCI.

[0099] In addition, the first predetermined value and the second predetermined value mentioned in this application can be predefined by higher-level configuration or protocol, and there is no restriction here. For example, the first predetermined value and the second predetermined value can both be a predefined constant.

[0100] For example, when the value of the “Antenna port(s)” field in the first DCI belongs to the target object (i.e., the target set) S(i*), if the value of the newly added first indication field u in the first DCI is the first predetermined value u0, then the first terminal can determine that no other terminal has multiplexed its PDSCH DMRS port with the first terminal via FD-CDM.

[0101] In this implementation method 2, by adding an indication field to the DCI signaling to indicate to the terminal whether there are no other terminals sharing time-frequency resources with the terminal's PDSCH DMRS port(s) via FD-CDM, the first terminal can clearly know whether FD-CDM on the PDSCH DMRS port is "off" or "on", thereby ensuring the reliability of wireless communication.

[0102] Furthermore, compared to related technologies that use the bit length of the added DCI for indication, this implementation method 2 can overcome the problem of high detection complexity caused by modifying the DCI length in related technologies. This implementation method 2 can ensure the flexibility of base station scheduling without increasing the complexity of terminal detection of PDCCH / DCI.

[0103] Method 3

[0104] If the value of the antenna port field in the first DCI belongs to the target object, and the value of the second indication field in the first RRC signaling received by the first terminal is a second predetermined value, the first terminal determines that there is no PDSCH DMRS port of the second terminal multiplexed with the PDSCH DMRS port of the first terminal via FD-CDM; wherein, the second indication field is used to indicate whether there is no PDSCH DMRS port of the second terminal multiplexed with the PDSCH DMRS port of the first terminal via FD-CDM. Optionally, the second indication field can be a newly added indication field in the first RRC signaling.

[0105] For example, when the value of the “Antenna port(s)” field in the first DCI belongs to the target object (i.e., the target set) S(i*) (i.e. the target object), and if the value of the second indicator field v newly added in the first RRC is the second predetermined value v0, then the first terminal can determine that no other terminal has multiplexed the PDSCH DMRS port of the first terminal through FD-CDM.

[0106] Optionally, the first RRC signaling and the second RRC signaling mentioned in this application may be the same or different, and no restriction is imposed here.

[0107] In this implementation method 3, by adding an indication field to the RRC signaling to indicate to the terminal whether there are no other terminals sharing time-frequency resources with the terminal's PDSCH DMRS port(s) via FD-CDM, the first terminal can clearly know whether FD-CDM on the PDSCH DMRS port is "off" or "on", thereby ensuring the reliability of wireless communication.

[0108] Furthermore, compared to related technologies that use bit fields in RRC signaling for indication, in this implementation 3, when the terminal is indicated by the newly added indication field, some field values ​​in the "Antenna port(s)" field of the first DCI correspond to PDSCH DMRS FD-CDM being off, while others correspond to PDSCH DMRS FD-CDM being on. The base station can still dynamically and flexibly schedule whether PDSCH DMRS FD-CDM is "off" or "on" according to the channel quality and the transmission code rate through DCI signaling. This avoids the problem of inflexible PDSCH DMRS FD-CDM configuration caused by the large RRC activation delay in related technologies.

[0109] Method 4

[0110] If the value of the antenna port field in the first DCI belongs to the target object, the first terminal determines that there is no PDSCH DMRS port of the second terminal that is multiplexed with the PDSCH DMRS port of the first terminal via FD-CDM.

[0111] For example, when the value of the “Antenna port(s)” field of the first DCI belongs to the target object (i.e. the target set) S(i*), the first terminal believes that no other terminal has multiplexed its PDSCH DMRS port with the first terminal through FD-CDM.

[0112] In this implementation method 4, the DCI signaling indicates to the terminal whether there are no other terminals sharing time-frequency resources with the terminal's PDSCHDMRS port(s) via FD-CDM. This enables the first terminal to clearly know whether FD-CDM on the PDSCHDMRS port is "off" or "on", thereby ensuring the reliability of wireless communication and the flexibility of base station scheduling.

[0113] like Figure 4 The diagram shown is a flowchart illustrating a communication indication method 400 provided in an exemplary embodiment of this application. This method 400 can be executed by, but is not limited to, a network-side device, specifically by hardware and / or software installed in the network-side device. In this embodiment, the method 400 may include at least the following steps.

[0114] S410, the network-side device sends the first DCI to the first terminal.

[0115] Wherein, the first DCI is used by the first terminal to determine whether the physical downlink shared channel (PDSCH) demodulation reference signal (DMRS) port of the second terminal does not exist and is multiplexed with the PDSCH DMRS port of the first terminal through frequency domain code division multiplexing (FD-CDM); the second terminal is a terminal other than the first terminal.

[0116] In one implementation, the first DCI includes an antenna port domain and / or a first indication domain; wherein the antenna port domain and / or the first indication domain are specifically used to indicate whether the PDSCH DMRS port of the second terminal and the PDSCH DMRS port of the first terminal are multiplexed in FD-CDM mode.

[0117] In another implementation, the method further includes: the network-side device sending a first Radio Resource Control (RRC) signaling message to the first terminal; wherein the first RRC signaling message includes a second indication field, the second indication field being specifically used to indicate whether the PDSCH DMRS port of the second terminal and the PDSCH DMRS port of the first terminal are multiplexed in FD-CDM mode.

[0118] In another implementation, the method further includes: the network-side device sending a second RRC signaling to the first terminal. The second RRC signaling is used by the first terminal to configure N first objects. Each first object includes a first set or a first array, which is determined according to a first table. The first table configures the correspondence between antenna port field values ​​and first and second information. The first information is the PDSCH DMRS port assigned to the first terminal by the network-side device, and the second information is the multiplexing relationship between the PDSCH and PDSCH DMRS ports. N is greater than or equal to 1.

[0119] It is understood that the aforementioned implementation processes given in this embodiment can refer to the relevant descriptions in method embodiments 200 and / or 300 to achieve the same or corresponding technical effects. To avoid repetition, they will not be described again here.

[0120] It should be noted that the communication indication method 200-400 provided in this application embodiment can be executed by a communication indication device, or by a control module in the communication indication device for executing the communication indication method 200-400. This application embodiment uses the execution of the communication indication method 200-400 by a communication indication device as an example to illustrate the communication indication device provided in this application embodiment.

[0121] like Figure 5 The diagram shows a schematic of a communication indication device 500 provided in an exemplary embodiment of this application. The device 500 includes a determination module 510, configured to, upon receiving a first downlink control information (DCI), determine, based on the target object and / or the first DCI, whether the physical downlink shared channel (PDSCH) demodulation reference signal (DMRS) port of the second terminal and the PDSCH DMRS port of the first terminal are multiplexed using frequency domain code division multiplexing (FD-CDM). The target object is determined by the first terminal based on N first objects, which include a first set or a first array. The first set and / or the first array are determined based on a first table, which configures the correspondence between the antenna port field values ​​and first and second information. The first information is the PDSCH DMRS port allocated to the first terminal by the network-side device, and the second information is the multiplexing relationship between the PDSCH and the PDSCH DMRS port. The second terminal is any terminal other than the first terminal, and N is an integer greater than or equal to 1.

[0122] In one implementation, the device 500 further includes a first configuration module, which is used to configure the target object.

[0123] In one implementation, the determining module 510 is used to determine, when the state of the antenna port domain in the first DCI is the target state, that there is no PDSCH DMRS port of the second terminal multiplexed with the PDSCH DMRS port of the first terminal via FD-CDM, wherein the target state includes at least a reserved state.

[0124] In one implementation, the determining module 510 is further configured to determine the configuration of the PDSCH DMRS port of the first terminal based on the first DCI and the target object.

[0125] In one implementation, the determining module 510 is configured to: determine the target array based on the target set when the target object is a target set; calculate a first index based on the domain value of the antenna port field in the first DCI; determine a first element from the target array based on the first index; and determine the configuration corresponding to the first element as the configuration of the PDSCH DMRS port of the first terminal.

[0126] In one implementation, the determining module 510 is configured to, when the target object is a target array, calculate a first index based on the domain value of the antenna port field in the first DCI; determine a second element from the target array based on the first index; and determine the configuration corresponding to the second element as the configuration of the PDSCH DMRS port of the first terminal.

[0127] In one implementation, the determining module 510 is used to determine that there is no PDSCH DMRS port of the second terminal multiplexed with the PDSCH DMRS port of the first terminal via FD-CDM when the value of the antenna port field in the first DCI belongs to the target object and the value of the first indication field in the first DCI is a first predetermined value; wherein, the first indication field is specifically used to indicate whether there is no PDSCH DMRS port of the second terminal multiplexed with the PDSCH DMRS port of the first terminal via FD-CDM.

[0128] In one implementation, the determining module 510 is configured to determine, when the value of the antenna port field in the first DCI belongs to the target object and the value of the second indication field in the received first Radio Resource Control (RRC) signaling is a second predetermined value, that there is no PDSCH DMRS port of the second terminal multiplexed with the PDSCH DMRS port of the first terminal via FD-CDM; wherein, the second indication field is specifically used to indicate whether there is no PDSCH DMRS port of the second terminal multiplexed with the PDSCH DMRS port of the first terminal via FD-CDM.

[0129] In one implementation, the determining module 510 is used to determine that there is no PDSCH DMRS port of the second terminal multiplexing with the PDSCH DMRS port of the first terminal via FD-CDM when the domain value of the antenna port domain in the first DCI belongs to the target object.

[0130] In one implementation, the determining module 510 is configured to: determine the first object as the target object when N is 1; or determine the target object from the N first objects according to the configuration of the PDSCH and / or the configuration of the DMRS when N is an integer greater than 1.

[0131] In one implementation, the configuration method of the first object includes at least one of the following: configuration via a second RRC signaling; protocol predefinition.

[0132] In one implementation, the configuration via the second RRC signaling includes: indicating N of the first objects respectively through N third indication fields included in the second RRC signaling.

[0133] The communication indication device 500 in this application embodiment can be a device, a device with an operating system, or an electronic device, or it can be a component, integrated circuit, or chip in a terminal. The device or electronic device can be a mobile terminal or a non-mobile terminal. For example, a mobile terminal can include, but is not limited to, the types of terminals 11 listed above, while a non-mobile terminal can be a server, network attached storage (NAS), personal computer (PC), television (TV), ATM, or self-service machine, etc. This application embodiment does not specifically limit the type of terminal.

[0134] The communication indication device 500 provided in this application embodiment can achieve... Figures 2 to 3 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0135] like Figure 6 The diagram shown is a schematic representation of a communication indication device 600 provided in an exemplary embodiment of this application. The device 600 includes: a transmitting module 610, configured to transmit first downlink control information (DCI) to a first terminal, wherein the first DCI is used by the first terminal to determine whether there is a physical downlink shared channel (PDSCH) demodulation reference signal (DMRS) port of a second terminal that is multiplexed with the PDSCH DMRS port of the first terminal via frequency domain code division multiplexing (FD-CDM); the second terminal is a terminal other than the first terminal.

[0136] In one implementation, the device 600 further includes a second configuration module, which is used to configure the first DCI.

[0137] In one implementation, the first DCI includes an antenna port domain and / or a first indication domain; wherein the antenna port domain and / or the first indication domain are specifically used to indicate whether the PDSCH DMRS port of the second terminal and the PDSCH DMRS port of the first terminal are multiplexed in FD-CDM mode.

[0138] In one implementation, the sending module 610 is further configured to send a first Radio Resource Control (RRC) signaling to the first terminal; wherein the first RRC signaling includes a second indication field, the second indication field being specifically used to indicate whether the PDSCH DMRS port of the second terminal and the PDSCH DMRS port of the first terminal are multiplexed in FD-CDM mode.

[0139] In one implementation, the sending module 610 is used to send a second RRC signaling to a first terminal; wherein the second RRC signaling is used by the first terminal to configure N first objects, the first objects including a first set or a first array, the first set and / or the first array being determined according to a first table, the first table configuring the correspondence between the field values ​​of the antenna port field and first information and second information, the first information being the PDSCH DMRS port allocated to the first terminal by the network-side device, the second information being the multiplexing relationship between the PDSCH and PDSCH DMRS ports, and the N being greater than or equal to 1.

[0140] The communication indication device 600 in this application embodiment can be a device, a device with an operating system, or an electronic device, or it can be a component, integrated circuit, or chip in a terminal. The device or electronic device can be a mobile terminal or a non-mobile terminal. For example, a mobile terminal can include, but is not limited to, the types of terminals 11 listed above, while a non-mobile terminal can be a server, network attached storage (NAS), personal computer (PC), television (TV), ATM, or self-service machine, etc. This application embodiment does not specifically limit the type of terminal.

[0141] The communication indication device 600 provided in this application embodiment can achieve... Figure 4 The various processes implemented in the method embodiment achieve the same technical effect, and will not be described again here to avoid repetition.

[0142] This application also provides a terminal, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the steps of the method described in method embodiments 200 and / or 300. This terminal embodiment corresponds to the above-described terminal-side method embodiments, and all implementation processes and methods of the above-described method embodiments can be applied to this terminal embodiment and achieve the same technical effect. Specifically, Figure 7 A schematic diagram of the hardware structure of a terminal to implement an embodiment of this application.

[0143] The terminal 700 includes, but is not limited to, at least some of the following components: radio frequency unit 701, network module 702, audio output unit 703, input unit 704, sensor 705, display unit 706, user input unit 707, interface unit 708, memory 709, and processor 710.

[0144] Those skilled in the art will understand that the terminal 700 may also include a power supply (such as a battery) for supplying power to various components. The power supply may be logically connected to the processor 710 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. Figure 7 The terminal structure shown does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0145] It should be understood that, in this embodiment, the input unit 704 may include a graphics processing unit (GPU) 1041 and a microphone 7042. The GPU 7041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 706 may include a display panel 7061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 707 includes a touch panel 7071 and other input devices 7072. The touch panel 7071 is also called a touch screen. The touch panel 7071 may include a touch detection device and a touch controller. Other input devices 7072 may include, but are not limited to, a physical keyboard, function keys (such as volume control buttons, power buttons, etc.), a trackball, a mouse, and a joystick, which will not be described in detail here.

[0146] In this embodiment, the radio frequency unit 701 receives downlink data from the network-side device and processes it for the processor 710; additionally, it sends uplink data to the network-side device. Typically, the radio frequency unit 701 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, etc.

[0147] The memory 709 can be used to store software programs or instructions and various data. The memory 709 may primarily include a program or instruction storage area and a data storage area. The program or instruction storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 709 may include high-speed random access memory and non-volatile memory, wherein the non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. For example, at least one disk storage device, flash memory device, or other non-volatile solid-state storage device.

[0148] Processor 710 may include one or more processing units; optionally, processor 710 may integrate an application processor and a modem processor, wherein the application processor mainly handles the operating system, user interface, and applications or instructions, and the modem processor mainly handles wireless communication, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 710.

[0149] The processor 710, upon receiving first downlink control information (DCI), determines, based on the target object and / or the first DCI, whether the physical downlink shared channel (PDSCH) demodulation reference signal (DMRS) port of the second terminal is multiplexed with the PDSCH DMRS port of the first terminal via frequency domain code division multiplexing (FD-CDM). The target object is determined by the first terminal based on N first objects, which include a first set or a first array. The first set and / or the first array is determined based on a first table, which configures the correspondence between antenna port field values ​​and first and second information. The first information is the PDSCH DMRS port allocated to the first terminal by the network-side equipment, and the second information is the multiplexing relationship between the PDSCH and the PDSCH DMRS port. The second terminal is any terminal other than the first terminal, and N is an integer greater than or equal to 1.

[0150] In one implementation, the processor 710 is configured to determine, when the state of the antenna port domain in the first DCI is a target state, that there is no PDSCH DMRS port of the second terminal multiplexed with the PDSCH DMRS port of the first terminal via FD-CDM, wherein the target state includes at least a reserved state.

[0151] In one implementation, the processor 710 is further configured to determine the configuration of the PDSCH DMRS port of the first terminal based on the first DCI and the target object.

[0152] In one implementation, the processor 710 is further configured to: determine the target array based on the target set when the target object is a target set; calculate a first index based on the domain value of the antenna port field in the first DCI; determine a first element from the target array based on the first index; and determine the configuration corresponding to the first element as the configuration of the PDSCH DMRS port of the first terminal.

[0153] In one implementation, the processor 710 is configured to, when the target object is a target array, calculate a first index based on the domain value of the antenna port field in the first DCI; determine a second element from the target array based on the first index; and determine the configuration corresponding to the second element as the configuration of the PDSCH DMRS port of the first terminal.

[0154] In one implementation, the processor 710 is configured to determine, when the value of the antenna port field in the first DCI belongs to the target object and the value of the first indication field in the first DCI is a first predetermined value, that there is no PDSCH DMRS port of the second terminal multiplexed with the PDSCH DMRS port of the first terminal via FD-CDM; wherein, the first indication field is specifically used to indicate whether there is no PDSCH DMRS port of the second terminal multiplexed with the PDSCH DMRS port of the first terminal via FD-CDM.

[0155] In one implementation, the processor 710 is configured to determine, when the value of the antenna port field in the first DCI belongs to the target object and the value of the second indication field in the received first Radio Resource Control (RRC) signaling is a second predetermined value, that there is no PDSCH DMRS port of the second terminal multiplexed with the PDSCH DMRS port of the first terminal via FD-CDM; wherein, the second indication field is specifically used to indicate whether there is no PDSCH DMRS port of the second terminal multiplexed with the PDSCH DMRS port of the first terminal via FD-CDM.

[0156] In one implementation, the processor 710 is configured to determine, when the field value of the antenna port field in the first DCI belongs to the target object, that there is no PDSCH DMRS port of the second terminal multiplexed with the PDSCH DMRS port of the first terminal via FD-CDM.

[0157] In one implementation, the radio frequency unit 701 is used for any of the following: when N is 1, determining the first object as the target object; when N is an integer greater than 1, determining the target object from the N first objects according to the configuration of the PDSCH and / or the configuration of the DMRS.

[0158] In one implementation, the configuration method of the first object includes at least one of the following: configuration via a second RRC signaling; protocol predefinition.

[0159] In one implementation, the configuration via the second RRC signaling includes: indicating N of the first objects respectively through N third indication fields included in the second RRC signaling.

[0160] In this embodiment, the first terminal determines whether there is a second terminal's PDSCH DMRS port multiplexed with the first terminal's PDSCH DMRS port via FD-CDM by selecting target objects from N first sets or multiple first arrays and / or receiving the first DCI. This enables the first terminal to clearly know whether the FD-CDM on the PDSCH DMRS port is "off" or "on", thereby ensuring the reliability of wireless communication.

[0161] This application also provides a network-side device, including a processor and a communication interface. The communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the steps of the method described in embodiment 400. This network-side device embodiment corresponds to the above-described network-side device method embodiment. All implementation processes and methods of the above-described method embodiments can be applied to this network-side device embodiment and achieve the same technical effects.

[0162] Specifically, embodiments of this application also provide a network-side device. For example... Figure 8 As shown, the network device 800 includes an antenna 801, a radio frequency (RF) device 802, and a baseband device 803. The antenna 801 is connected to the RF device 802. In the uplink direction, the RF device 802 receives information through the antenna 801 and transmits the received information to the baseband device 803 for processing. In the downlink direction, the baseband device 803 processes the information to be transmitted and sends it to the RF device 802. The RF device 802 processes the received information and transmits it through the antenna 801.

[0163] The aforementioned frequency band processing device can be located in the baseband device 803. The method executed by the network-side device in the above embodiments can be implemented in the baseband device 803, which includes a processor 804 and a memory 805.

[0164] The baseband device 803 may, for example, include at least one baseband board on which multiple chips are disposed, such as... Figure 8 As shown, one of the chips, for example, is a processor 804, which is connected to a memory 805 to call the program in the memory 805 and execute the network device operations shown in the above method embodiment.

[0165] The baseband device 803 may also include a network interface 806 for exchanging information with the radio frequency device 802, such as a common public radio interface (CPRI).

[0166] Specifically, the network-side device in this embodiment of the invention further includes: instructions or programs stored in memory 805 and executable on processor 804, wherein processor 804 calls the instructions or programs in memory 805 to execute... Figure 6 The methods executed by each module shown achieve the same technical effect, and to avoid repetition, they will not be described in detail here.

[0167] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-mentioned communication instruction method embodiment or communication instruction method embodiment and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0168] The processor mentioned above is the processor in the terminal described in the above embodiments. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (ROM).

[0169] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface and the processor are coupled. The processor is used to run network-side device programs or instructions to implement the various processes of the above-mentioned communication indication method embodiment or communication indication method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0170] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0171] This application also provides a computer program product, which includes a processor, a memory, and a program or instructions stored in the memory and executable on the processor. When the program or instructions are executed by the processor, they implement the various processes of the above-mentioned communication instruction method embodiment or communication instruction method embodiment, and can achieve the same technical effect. To avoid repetition, they will not be described again here.

[0172] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0173] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0174] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A communication indication method, characterized in that, include: Upon receiving the first downlink control information (DCI), the first terminal determines, based on the target object and the first DCI, whether the physical downlink shared channel (PDSCH) demodulation reference signal (DMRS) port of the second terminal and the PDSCH DMRS port of the first terminal are multiplexed using frequency domain code division multiplexing (FD-CDM). Alternatively, upon receiving the first DCI, the first terminal determines, based on the first DCI, whether the PDSCH DMRS port of the second terminal and the PDSCH DMRS port of the first terminal are multiplexed in the FD-CDM manner. The target object is determined by the first terminal based on N first objects. The first object includes a first set or a first array. The first set or the first array is determined based on a first table. The first table configures the correspondence between the field value of the antenna port field and the first information and the second information. The first information is the PDSCH DMRS port assigned to the first terminal by the network side device. The second information is the multiplexing relationship between the PDSCH and the PDSCH DMRS port. The second terminal is a terminal other than the first terminal, and N is an integer greater than or equal to 1; wherein, the step of determining whether there is a PDSCH DMRS port of the second terminal and the PDSCH DMRS port of the first terminal multiplexed in FD-CDM mode according to the first DCI includes: When the state of the antenna port domain in the first DCI is the target state, it is determined that there is no PDSCH DMRS port of the second terminal and the PDSCH DMRS port of the first terminal multiplexing through FD-CDM, wherein the target state includes at least the reserved state; The method further includes: The first terminal determines the configuration of its PDSCH DMRS port based on the first DCI and the target object.

2. The method as described in claim 1, characterized in that, The step of the first terminal determining the configuration of its PDSCH DMRS port based on the first DCI and the target object includes: When the target object is a target set, the first terminal determines the target array based on the target set; Calculate the first index based on the field value of the antenna port field in the first DCI; The first element is determined from the target array based on the first index, and the configuration corresponding to the first element is determined as the configuration of the PDSCH DMRS port of the first terminal.

3. The method as described in claim 1, characterized in that, The step of the first terminal determining the configuration of its PDSCH DMRS port based on the first DCI and the target object includes: When the target object is a target array, the first index is calculated based on the field value of the antenna port field in the first DCI; The second element is determined from the target array based on the first index, and the configuration corresponding to the second element is determined as the configuration of the PDSCH DMRS port of the first terminal.

4. The method as described in claim 1, characterized in that, Based on the target object and the first DCI, the step of determining whether there is a PDSCH DMRS port of the second terminal that is multiplexed with the PDSCH DMRS port of the first terminal via FD-CDM includes: If the value of the antenna port field in the first DCI belongs to the target object and the value of the first indication field in the first DCI is a first predetermined value, the first terminal determines that there is no PDSCH DMRS port of the second terminal and the PDSCH DMRS port of the first terminal multiplexed in the FD-CDM manner. The first indication field is specifically used to indicate whether the PDSCH DMRS port of the second terminal and the PDSCH DMRS port of the first terminal are multiplexed in FD-CDM mode.

5. The method as described in claim 1, characterized in that, The step of determining whether there is no PDSCH DMRS port of the second terminal and the PDSCH DMRS port of the first terminal multiplexed via FD-CDM based on the target object and the first DCI includes: If the value of the antenna port field in the first DCI belongs to the target object, and the value of the second indication field in the first Radio Resource Control (RRC) signaling received by the first terminal is a second predetermined value, the first terminal determines that there is no PDSCH DMRS port of the second terminal multiplexing with the PDSCH DMRS port of the first terminal through FD-CDM. The second indication field is specifically used to indicate whether the PDSCH DMRS port of the second terminal and the PDSCH DMRS port of the first terminal are multiplexed in FD-CDM mode.

6. The method as described in claim 1, characterized in that, The step of determining whether there is no PDSCH DMRS port of the second terminal and the PDSCH DMRS port of the first terminal multiplexed via FD-CDM based on the first DCI and the target object includes: If the value of the antenna port field in the first DCI belongs to the target object, the first terminal determines that there is no PDSCH DMRS port of the second terminal that is multiplexed with the PDSCH DMRS port of the first terminal via FD-CDM.

7. The method according to any one of claims 1-6, characterized in that, The step of determining the target object based on N first objects includes any one of the following: When N is 1, the first object is determined as the target object; When N is an integer greater than 1, the target object is determined from the N first objects according to the configuration of the PDSCH and / or the configuration of the DMRS.

8. The method according to any one of claims 1-6, characterized in that, The configuration method of the first object includes at least one of the following: Configure via the second RRC signaling; Protocol predefined.

9. The method as described in claim 8, characterized in that, Configuration methods via the second RRC signaling include: The N third indication fields included in the second RRC signaling respectively indicate the N first objects.

10. A communication indication method, characterized in that, include: The network-side device sends the first downlink control information (DCI) to the first terminal. Wherein, the first DCI is used by the first terminal to determine whether there is a physical downlink shared channel (PDSCH) demodulation reference signal (DMRS) port of the second terminal and the PDSCH DMRS port of the first terminal are multiplexed in the frequency domain code division multiplexing (FD-CDM) mode. The second terminal is a terminal other than the first terminal. Before the step of the network-side device sending the first DCI to the first terminal, the method further includes: The network-side device sends a second RRC signaling to the first terminal; Wherein, the second RRC signaling is used to configure N first objects for the first terminal. The first objects include a first set or a first array. The first set and / or the first array are determined according to a first table. The first table configures the correspondence between the field value of the antenna port field and the first information and the second information. The first information is the PDSCH DMRS port assigned to the first terminal by the network side device. The second information is the multiplexing relationship between the PDSCH and the PDSCH DMRS port. The N is greater than or equal to 1.

11. The method as described in claim 10, characterized in that, The first DCI includes an antenna port domain and / or a first indication domain; The antenna port field and / or the first indication field are specifically used to indicate whether the PDSCH DMRS port of the second terminal is not multiplexed with the PDSCH DMRS port of the first terminal via FD-CDM.

12. The method as described in claim 10, characterized in that, The method further includes: The network-side device sends a first Radio Resource Control (RRC) signaling message to the first terminal; The first RRC signaling includes a second indication field, which is specifically used to indicate whether the PDSCH DMRS port of the second terminal and the PDSCH DMRS port of the first terminal are multiplexed in FD-CDM mode.

13. A communication indication device, characterized in that, Applied to a first terminal, the device includes: The determination module is used to determine, based on the target object and the first DCI, whether the physical downlink shared channel (PDSCH) demodulation reference signal (DMRS) port of the second terminal and the PDSCH DMRS port of the first terminal are multiplexed in the frequency domain code division multiplexing (FD-CDM) mode when the first terminal receives the first downlink control information (DCI). Alternatively, when the first terminal receives the first DCI, it can determine, based on the first DCI, whether the PDSCH DMRS port of the second terminal is multiplexed with the PDSCH DMRS port of the first terminal in the FD-CDM manner. Wherein, the target object is determined by the first terminal based on N first objects, the first object including a first set or a first array, the first set and / or the first array being determined based on a first table, the first table configuring the correspondence between the field values ​​of the antenna port field and first information and second information, the first information being the PDSCH DMRS port allocated to the first terminal by the network-side device, and the second information being the multiplexing relationship between the PDSCH and PDSCH DMRS ports; the second terminal is a terminal other than the first terminal, and N is an integer greater than or equal to 1; The step of determining whether there is no PDSCH DMRS port of the second terminal and the PDSCH DMRS port of the first terminal multiplexed in the FD-CDM manner based on the first DCI includes: when the state of the antenna port domain in the first DCI is the target state, determining that there is no PDSCH DMRS port of the second terminal and the PDSCH DMRS port of the first terminal multiplexed in the FD-CDM manner, wherein the target state includes at least the reserved state; After determining, based on the first DCI, that there is no PDSCH DMRS port of the second terminal multiplexing with the PDSCH DMRS port of the first terminal via FD-CDM, the determining module is further configured to determine the configuration of the PDSCH DMRS port of the first terminal based on the first DCI and the target object.

14. The apparatus as claimed in claim 13, characterized in that, The determining module is used to determine a target array based on the target set when the target object is a target set; and to calculate a first index based on the field value of the antenna port field in the first DCI; The first element is determined from the target array based on the first index, and the configuration corresponding to the first element is determined as the configuration of the PDSCH DMRS port of the first terminal.

15. The apparatus as claimed in claim 13, characterized in that, The determining module is used to calculate a first index based on the field value of the antenna port field in the first DCI when the target object is a target array; The second element is determined from the target array based on the first index, and the configuration corresponding to the second element is determined as the configuration of the PDSCH DMRS port of the first terminal.

16. The apparatus as claimed in claim 13, characterized in that, The determining module is used to determine that there is no PDSCH DMRS port of the second terminal multiplexing with the PDSCH DMRS port of the first terminal in the FD-CDM manner when the field value of the antenna port field in the first DCI belongs to the target object and the field value of the first indication field in the first DCI is a first predetermined value. The first indication field is specifically used to indicate whether the PDSCH DMRS port of the second terminal and the PDSCH DMRS port of the first terminal are multiplexed in FD-CDM mode.

17. The apparatus as claimed in claim 13, characterized in that, The determining module is used to determine that there is no PDSCH DMRS port of the second terminal multiplexing with the PDSCH DMRS port of the first terminal via FD-CDM when the value of the antenna port field in the first DCI belongs to the target object and the value of the second indication field in the received first Radio Resource Control (RRC) signaling is a second predetermined value. The second indication field is specifically used to indicate whether the PDSCH DMRS port of the second terminal and the PDSCH DMRS port of the first terminal are multiplexed in FD-CDM mode.

18. The apparatus as claimed in claim 13, characterized in that, The determining module is used to determine that, if the field value of the antenna port field in the first DCI belongs to the target object, there is no PDSCH DMRS port of the second terminal multiplexed with the PDSCH DMRS port of the first terminal via FD-CDM.

19. The apparatus as claimed in any one of claims 13-18, characterized in that, The determining module is used for any of the following: When N is 1, the first object is determined as the target object; When N is an integer greater than 1, the target object is determined from the N first objects according to the configuration of the PDSCH and / or the configuration of the DMRS.

20. The apparatus according to any one of claims 13-18, characterized in that, The configuration method of the first object includes at least one of the following: Configure via the second RRC signaling; Protocol predefined.

21. The apparatus as claimed in claim 20, characterized in that, Configuration methods via the second RRC signaling include: The first object is indicated by the N third indication fields included in the second RRC signaling.

22. A communication indication device, characterized in that, include: The transmitting module is used to transmit first downlink control information (DCI) to the first terminal, wherein the first DCI is used by the first terminal to determine whether there is a physical downlink shared channel (PDSCH) demodulation reference signal (DMRS) port of the second terminal and the PDSCH DMRS port of the first terminal multiplexed in frequency domain code division multiplexing (FD-CDM). The second terminal is a terminal other than the first terminal. Before the step of sending the first DCI to the first terminal, the sending module is further configured to send a second RRC signaling to the first terminal; wherein, the second RRC signaling is used by the first terminal to configure N first objects, the first objects including a first set or a first array, the first set and / or the first array being determined according to a first table, the first table configuring the correspondence between the field values ​​of the antenna port field and the first information and the second information, the first information being the PDSCH DMRS port allocated to the first terminal by the network-side device, the second information being the multiplexing relationship between the PDSCH and the PDSCH DMRS port, and the N being greater than or equal to 1.

23. The apparatus as claimed in claim 22, characterized in that, The first DCI includes an antenna port domain and / or a first indication domain; The antenna port field and / or the first indication field are specifically used to indicate whether the PDSCH DMRS port of the second terminal is not multiplexed with the PDSCH DMRS port of the first terminal via FD-CDM.

24. The apparatus as claimed in claim 22, characterized in that, The sending module is also used to send a first Radio Resource Control (RRC) signaling to the first terminal; The first RRC signaling includes a second indication field, which is specifically used to indicate whether the PDSCH DMRS port of the second terminal and the PDSCH DMRS port of the first terminal are multiplexed in FD-CDM mode.

25. A terminal, characterized in that, It includes a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the method of communication instruction as described in any one of claims 1 to 9.

26. A network-side device, characterized in that, It includes a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the communication instruction method as described in any one of claims 10 to 12.

27. A readable storage medium, characterized in that, The readable storage medium stores a program or instructions that, when executed by a processor, implement the method of communication indication as claimed in any one of claims 1 to 9, or implement the steps of the method of communication indication as claimed in any one of claims 10 to 12.

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