CN115883043A - Communication indication method, terminal and network side equipment - Google Patents

Abstract

The application discloses a communication indication method, a terminal and network side equipment, which belong to the field of communication, and the communication indication method of the embodiment of the application comprises the following steps: under the condition that the first DCI is received by the first terminal, determining whether a PDSCH DMRS port of the second terminal and a PDSCH DMRS port of the first terminal are multiplexed in an FD-CDM mode according to the target object and/or the first DCI; the target object is determined by a first terminal according to N first objects, each first object comprises a first set or a first array, the first sets and/or the first arrays are determined according to a first table, the first table is configured with a corresponding relation between a domain value of an antenna port domain and first information and second information, the first information is a PDSCH DMRS port allocated to the first terminal by network side equipment, and the second information is a multiplexing relation between a PDSCH and a 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

Communication indication method, terminal and network side equipment

Technical Field

The application belongs to the technical field of communication, and particularly relates to a communication indication method, a terminal and network side equipment.

Background

In the related communication technology, in order to support a higher transmission rate and a wider service type, further research needs to be performed on mobile communication in a frequency band above 52.6 GHz.

When Physical Downlink Shared Channel (PDSCH) Demodulation Reference signals (DMRSs) of different terminals are carried on the same multiple subcarriers and orthogonal transmission is performed in a frequency-domain code division multiplexing (FD-CDM) manner, how to enable the terminal to know whether FD-CDM on a PDSCH port is "closed" or "open" to ensure reliability of wireless communication becomes a technical problem that needs to be solved in the field.

Disclosure of Invention

The embodiment of the application provides a communication indication method, a terminal and network side equipment, which can enable the terminal to know whether FD-CDM on a PDSCH DMRS port is closed or opened.

In a first aspect, a communication indication method is provided, including: under the condition that a first DCI is received by a first terminal, determining whether a PDSCH DMRS port of a second terminal and a PDSCH DMRS port of the first terminal are multiplexed in an FD-CDM mode according to a target object and/or the first DCI; the target object is determined by the first terminal according to N first objects, the first object includes a first set or a first array, the first set and/or the first array is determined according to a first table, the first table is configured with a corresponding relationship between a domain value of an antenna port domain and first information and second information, the first information is a PDSCH DMRS port allocated to the first terminal by a network side device, and the second information is a multiplexing relationship between a PDSCH and a 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.

In a second aspect, a communication indication method is provided, including: the method comprises the step that network side equipment sends first DCI to a first terminal, wherein the first DCI is used for the first terminal to determine whether a PDSCH DMRS port of a second terminal and the PDSCH DMRS port of the first terminal are multiplexed in an FD-CDM mode, and the second terminal is other than the first terminal.

In a third aspect, a communication indication apparatus is provided, which is applied to a first terminal, and the apparatus includes: a determining module, configured to determine, by the first terminal, whether there is no PDSCH DMRS port of the second terminal multiplexed with the PDSCH DMRS port of the first terminal by an FD-CDM scheme according to the target object and/or the first DCI when the first DCI is received; the target object is determined by the first terminal according to N first objects, the first object includes a first set or a first array, the first set and/or the first array is determined according to a first table, the first table is configured with a corresponding relationship between a domain value of an antenna port domain and first information and second information, the first information is a PDSCH DMRS port allocated to the first terminal by a network side device, and the second information is a multiplexing relationship between a PDSCH and a PDSCH DMRS port; the second terminal is other terminals except the first terminal, and N is an integer greater than or equal to 1.

In a fourth aspect, a communication indication apparatus is provided, including: a sending module, configured to send first downlink control information DCI to a first terminal, where the first DCI is used for the first terminal to determine whether a PDSCH DMRS port of a second terminal is not present and is multiplexed with a PDSCH DMRS port of the first terminal by an FD-CDM scheme, and the second terminal is a terminal other than the first terminal.

In a fifth aspect, there is provided a terminal comprising a processor, a memory, and a program or instructions stored on the memory and executable on the processor, which when executed by the processor, performs the steps of the method according to the first aspect.

In a sixth aspect, a terminal is provided, which comprises a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to execute a program or instructions to implement the steps of the method according to the first aspect, or to implement the steps of the method according to the third aspect.

In a seventh aspect, a network side device is provided, which includes a processor, a memory, and a program or an instruction stored in the memory and executable on the processor, and when executed by the processor, the program or the instruction implements the steps of the method according to the third aspect.

In an eighth aspect, a network-side device is provided, which includes a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to execute a program or an instruction to implement the steps of the method according to the third aspect.

In a ninth aspect, there is provided a readable storage medium on which is stored a program or instructions which, when executed by a processor, carries out the steps of the method of the first aspect or the steps of the method of the third aspect.

In a tenth aspect, a chip is provided, the chip comprising a processor and a communication interface, the communication interface being coupled to the processor, the processor being configured to execute a program or instructions to implement the steps of the method according to the first aspect or to implement the steps of the method according to the third aspect.

In an eleventh aspect, there is provided a computer program product stored in a non-transitory storage medium, the program/program product being executable 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.

In the embodiment of the application, the first terminal determines whether the PDSCH DMRS port of the second terminal and the PDSCH DMRS port of the first terminal are multiplexed in an FD-CDM mode according to the target object and/or the received first DCI, so that the first terminal can know whether FD-CDM on the PDSCH DMRS port is closed or opened, and the reliability of wireless communication is ensured.

Drawings

Fig. 1 is a schematic structural diagram of a wireless communication system according to an exemplary embodiment of the present application.

Fig. 2 is a flowchart illustrating a method for communication indication according to an exemplary embodiment of the present application.

Fig. 3 is a flowchart illustrating a method for indicating communication according to another exemplary embodiment of the present application.

Fig. 4 is a flowchart illustrating a communication indication method according to another exemplary embodiment of the present application.

Fig. 5 is a schematic structural diagram of an apparatus for communication indication provided in an exemplary embodiment of the present application.

Fig. 6 is a schematic structural diagram of a communication indication apparatus according to an exemplary embodiment of the present application.

Fig. 7 is a schematic structural diagram of a terminal according to an exemplary embodiment of the present application.

Fig. 8 is a schematic structural diagram of a network-side device according to an exemplary embodiment of the present application.

Detailed Description

Technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments that can be derived from the embodiments given herein by a person of ordinary skill in the art are intended to be within the scope of the present disclosure.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in other sequences than those illustrated or otherwise described herein, and that the terms "first" and "second" used herein generally refer to a class and are not to be construed as limiting the number of objects, for example, a first object can be one or more. In addition, "and/or" in the specification and claims means at least one of connected objects, and a character "/" generally indicates a relationship in which a front and rear associated object is an "or".

It is noted that the techniques described in the embodiments of the present application are not limited to Long Term Evolution (LTE)/LTE-Advanced (LTE-a) systems, but may 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), and so on,Single-carrier Frequency-Division Multiple Access (SC-FDMA) and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described techniques can be used for both the above-mentioned systems and radio technologies, as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for purposes of example, and NR terminology is used in much of the description below, but the techniques may also be applied to applications other than NR system applications, such as generation 6 (6) ^th Generation, 6G) communication system.

Fig. 1 is a schematic diagram illustrating a structure of a wireless communication system to which an embodiment of the present application is applicable. The wireless communication system includes a terminal 11 and a network-side device 12. Wherein, the terminal 11 may also be called as a terminal Device or a User Equipment (UE), the terminal 11 may be a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer) or a notebook Computer, a Personal Digital Assistant (PDA), a palmtop Computer, a netbook, a super-Mobile Personal Computer (UMPC), a Mobile Internet Device (MID), a Wearable Device (Wearable Device) or a vehicle-mounted Device (VUE), a pedestrian terminal (PUE), and other terminal side devices, the Wearable Device includes: smart watches, bracelets, earphones, glasses and the like. It should be noted that the embodiment of the present application does not limit the specific type of the terminal 11. The network-side device 12 may be a Base Station or a core network, wherein the Base Station may be referred to as a node B, an evolved node B, an access Point, a Base Transceiver Station (BTS), a radio Base Station, a radio Transceiver, a Basic Service Set (BSS), an Extended Service Set (ESS), a node B, an evolved node B (eNB), a home node B, a WLAN access Point, a WiFi node, a Transmit Receive Point (TRP), or some other suitable terminology in the field, as long as the same technical effect is achieved, the Base Station is not limited to a specific technical vocabulary, and it should be noted that, in the embodiment of the present application, only the Base Station in the NR system is taken as an example, but the specific type of the Base Station is not limited.

The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings by using some embodiments and application scenarios thereof.

As shown in fig. 2, a flow chart of a communication indication method 200 provided for an exemplary embodiment of the present application illustrates that the method 200 may be executed by, but not limited to, a terminal, and in particular may be executed by hardware and/or software installed in the terminal. In this embodiment, the method 200 may include at least the following steps.

S210, the first terminal determines whether the PDSCH DMRS port of the second terminal and the PDSCH DMRS port of the first terminal are multiplexed in an FD-CDM mode according to the target object and/or the first DCI under the condition that the first DCI is received.

Wherein the second terminal is a terminal other than the first terminal.

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 \8230;. The first object includes a first set or a first array, the first set and/or the first array is determined according to a first table, a corresponding relationship between a domain value (also understood as a value) of an Antenna port (s)) domain and first information and second information is configured in the first table, the first information is a PDSCH DMRS port allocated to the first terminal by a network side device, and the second information is a multiplexing relationship between a PDSCH and a PDSCH DMRS port.

It can be understood that, for PDSCH Downlink Control Information (DCI), when the DCI format (format) is format1_1, an antenna port field exists in the PDSCH DCI (i.e. the first DCI), and a field value of the antenna port field may indicate which DMRS ports are used for a scheduled terminal, which CDM groups (groups) correspond to time-frequency resources that cannot be used for transmitting PDSCH, and the like. In other words, the antenna port domain in the first table given in this embodiment corresponds to the antenna port domain in DCI format1_1, so that a network side device (e.g., a base station, etc.) can flexibly inform a first terminal through PDSCH DCI (i.e., first DCI) whether FD-CDM on a PDSCH DMRS port of the first terminal is "off" or "on", that is, the first terminal can determine (or consider) whether there is no PDSCH demodulation reference signal DMRS port of a second terminal and the PDSCH DMRS port of the first terminal are multiplexed by frequency domain code division multiplexing (FD-CDM). It is to be understood that "whether or not" is absent in the present embodiment may be understood as being absent or may be present.

In this case, of course, according to different communication scenarios and the like, the first table may be as shown in table 1, table 2, table 3 or table 4, where table 1 is the first table when the communication scenario is Antenna port(s) (1000 + DMRS port), the DMRS Type is 1 (DMRS-Type = 1), the maximum length of OFDM symbol leading to DMRS is a single symbol (maxLength = 1), table 2 is the first table when the communication scenario is Antenna port(s) (1000 + DMRS), DMRS-Type =1, the Orthogonal Frequency Division Multiplexing (OFDM) symbol leading to DMRS is a double symbol (maxLength = 2), table 3 is the first table when the communication scenario is Antenna port (1000) and DMRS Type is 2 (DMRS-Type = 2), and table 3 is the first table when the communication scenario is Antenna port (1000 + DMRS) (1000 + polarization division multiplexing), DMRS-Type is 2 (DMRS-Type = 2), and DMRS = 1= the first table is the first table when the communication scenario is Antenna port (1000 + DMRS = 2).

For a single-symbol DMRS in the PDSCH DMRS type-1, port groups {1000, 1001}, {1002 and 1003} respectively realize orthogonal multiplexing through FD-CDM; for PDSCH DMRS type-1 dual-symbol DMRS (Double-symbol DMRS), port groups {1000, 1001}, {1002, 1003}, {1004, 1005}, and {1006, 1007} are respectively orthogonally multiplexed by FD-CDM.

For a Single-symbol DMRS (Single-symbol DMRS) in PDSCH DMRS type-2, port groups {1000, 1001}, {1002, 1003}, and {1004, 1005} respectively realize orthogonal multiplexing by FD-CDM; for PDSCH DMRS type-2 dual-symbol DMRS (Double-symbol DMRS), port groups {1000, 1001}, {1002, 1003}, {1004, 1005}, {1006, 1007}, {1008, 1009}, and {1010, 1011} are respectively orthogonally multiplexed by FD-CDM.

The third information in tables 2 and 4 is the Number of OFDM symbols (Number of front-load symbols) of the preamble DMRS.

TABLE 1

TABLE 2

TABLE 3

TABLE 4

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Based on the descriptions of the foregoing tables 1 to 4, as an alternative implementation, the configuration of the first object may include at least one of the following (11) to (12).

(11) The configuration is performed through second Radio Resource Control (RRC) signaling.

Optionally, the configuring through the second RRC signaling in this embodiment may include: respectively indicating N first objects through N third indication domains included in the second RRC signaling; wherein, the N third indication fields may be newly added indication fields in the second RRC signaling.

For example, a network side device (e.g., a base station) determines N first sets S (i) according to the first list, and adds N third indication fields F (i) in the second RRC signaling, where each third indication field F (i) represents one first set S (i), so that the first terminal may determine S (i) based on the second RRC signaling and/or configure the first array a (i) according to S (i).

For another example, the network side device may further determine N first arrays a (i) according to the first list, and add N third indication fields F (i) in the second RRC signaling, where each third indication field F (i) represents one first array a (i), so that the first terminal may determine a (i) based on the second RRC signaling.

(12) The protocol is predefined.

For example, the N first arrays a (i) may be predefined by the protocol.

For another example, N first sets S (i) may also be predefined by the protocol, which first terminal in turn configures a (i) according to the first sets S (i).

Optionally, i =0,1, \8230 \ 8230;, N-1, the elements in the first set S (i) are out of order, and the elements in the first array a (i) are in order, that is, the first set S (i) and the first array a (i) differ by: with respect to each element in S (i), each element included in a (i) has an order. Based on this, when determining a (i) from S (i), no matter which determination method is based, the obtained elements in a (i) have the sequence characteristics and belong to S (i), in other words, the present application does not limit how to determine a (i) from S (i).

Exemplarily, assuming that the first object is implemented by the second RRC signaling configuration and N =7, the F (i), S (i), a (i) may be as follows.

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

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

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

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

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

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

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

Wherein F (0) = "antPortDisbaleFdCdmCfg0", S (0) = {0,1,5,6}, a (0) = [0,1,5, 6].

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

It can be understood that, in this embodiment, according to the multiplexing relationship between the PDSCH and the PDSCH DMRS port (i.e., the first information) and the PDSCH DMRS port configured by the network side device for the first terminal (i.e., the second information), it is determined which PDSCH DMRS ports in the CDM group corresponding to domain values may also be multiplexed by other terminals in an FD-CDM manner, and at least some of the domain values are selected from the determined domain values to form the S (i).

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 domain value 0, PDSCH DMRS port 1 belonging to the same CDM group as PDSCH DMRS port 0 may also be multiplexed by other terminals by the FD-CDM scheme, and thus may be used as an element in S (0), and since the first information is 0,1, the second information is 1, and PDSCH DMRS port 0,1 belongs to the same CDM group for the domain value 2, the domain value 2 may not be used as an element in S (0), and for other domain values, the determination procedure of whether it may be used as an element in S (0) (or other S (i)) is similar to the aforementioned domain values 0,2, and is not repeated here.

It should be noted that, in addition to the aforementioned S (i) determination process, S (i) may also be optionally formed from at least part of the domain values in the first table depending on the communication scenario. For example, taking table 1 as an example, the threshold value of 1,3,5,7 may be selected to form S (0) = {1,3,5,7}, and the like, which is not limited in this embodiment.

Optionally, according to a difference in the indication manner of the first DCI, for example, the first terminal may indicate the first DCI by using a domain value of an antenna port domain or a domain value in a newly added indication domain, and the like, the first terminal determines whether there is no PDSCH DMRS port of the second terminal that is different from the PDSCH DMRS port of the first terminal in the multiplexing manner by the FD-CDM manner, which is not limited thereto.

In this embodiment, the first terminal determines whether there is no PDSCH DMRS port of the second terminal multiplexed with the PDSCH DMRS port of the first terminal by using the target object and/or the received first DCI, so that the first terminal can know whether FD-CDM on the PDSCH DMRS port is "off" or "on", thereby ensuring reliability of wireless communication.

As shown in fig. 3, a flow chart of a communication indication method 300 provided for an exemplary embodiment of the present application illustrates that the method 300 may be executed by, but not limited to, a terminal, and in particular may be executed by hardware and/or software installed in the terminal. In this embodiment, the method 300 may include at least the following steps.

S310, under the condition that the first DCI is received by the first terminal, according to the target object and/or the first DCI, whether the PDSCH DMRS port of the second terminal and the PDSCH DMRS port of the first terminal are multiplexed in an FD-CDM mode is determined.

The target object is determined by the first terminal according to N first objects, the first object includes a first set or a first array, the first set and/or the first array is determined according to a first table, the first table is configured with a correspondence between a domain value of an antenna port domain and first information and second information, the first information is a PDSCH DMRS port allocated to the first terminal by a network side device, the second information is a multiplexing relationship between a PDSCH and a 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.

It is to be understood that, in addition to the implementation process of S310 with reference to the related description in the method embodiment 200, as a possible implementation manner, the step of determining the target object according to the N first objects in S310 may include any one of the following (21) to (22) according to a difference in the value of N.

(21) Determining the first object as the target object in case that the N is 1.

Note that if N is equal to 1, then the antenna port domain F (i), the first set S (i) or the first array a (i) correspond to all PDSCH configurations and/or DMRS configurations. That is, when N is equal to 1, the first terminal may directly acquire the target object a (i × = 0).

(22) Determining the target object from the N first objects according to the configuration of the PDSCH and/or the configuration of the DMRS when the N is an integer greater than 1.

Note 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) correspond to one or more PDSCH configurations and/or DMRS configurations. That is, when the number is an integer greater than 1, the first terminal may determine a corresponding target object a (i) according to the configuration of the current PDSCH and/or the DMRS configuration, e.g., N =2, and then the target object a (i) is a (i = 1).

As another possible implementation manner, in this embodiment, depending on a communication scenario and the like, an implementation procedure of the first terminal determining whether there is no PDSCH DMRS port of the second terminal multiplexed with the PDSCH DMRS port of the first terminal by the FD-CDM scheme may also be different, and this is described below with reference to modes 1 to 4.

Mode 1

When the state of the antenna port domain in the first DCI is a target state, it is determined that there is no PDSCH DMRS port of the second terminal multiplexed with the PDSCH DMRS port of the first terminal by the FD-CDM scheme, where the target state at least includes a reserved (also understood as reserved) state or other states besides the reserved state, for example, taking table 1 as an example, part or all of the domain values 12 to 15 may be defined as a predetermined value or a predetermined state, for example, the PDSCH DMRS port corresponding to the domain value 12 to 15 is defined as a state that may be multiplexed by other terminals by the FD-CDM scheme, or the PDSCH DMRS port corresponding to the domain value 12 to 15 is defined as a state that may not be multiplexed by other terminals by the FD-CDM scheme, which is not limited herein.

Of course, in this embodiment, after 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 by the FD-CDM scheme, the first terminal may further determine the configuration of the PDSCH DMRS port of the first terminal according to a target object and a domain value of an antenna port region of the first DCI.

For example, in an implementation manner, in a case that the target object is a target set, the first terminal may further determine the target array according to the target set; calculating a first index according to a domain value of an antenna port domain in the first DCI; and determining a first element from the target array according to the first index, and determining the configuration corresponding to the first element as the configuration of the PDSCH DMRS port of the first terminal.

For another example, in another implementation manner, when the target object is a target array, the terminal may calculate a first index according to a domain value of an antenna port field in the first DCI; and determining a second element from the target array according to the first index, and determining the configuration corresponding to the second element as the configuration of the PDSCH DMRS port of the first terminal.

Optionally, the two foregoing implementations are different in that: in the latter implementation, the target object is a target array, that is, the first terminal may determine the target array a (i) directly from the plurality of first arrays; the target objects in the former implementation are target sets, and the first terminal needs to determine a target set from the plurality of first sets and then determine a target array a (i) according to the target set.

Based on the foregoing description of the mode 1, the implementation process of the mode 1 is further described below with reference to an example.

Illustratively, assuming that the target object (i.e., the target array) is a (i × = 0), and a (i × = 0) corresponds to the PDSCH DMRS configuration with DMRS-Type =1, maxlength =1, and a (i × = 0) has a length of 4, since the length is less than or equal to the number of "reserved" states of the domain value state of the "Antenna port(s)" field in table 1, the 1 st element in a (i × = 0) corresponds to the first value (i.e., 12) of the "reserved" state of the domain value state of the "Antenna port(s)" field in table 1, and the 2 nd element in a (i = 0) corresponds to the 3 rd element in the 13, 14, 15 th, 1 th element in the "Antenna(s)" field in table 1.

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 a first index (index) = value of the Antenna port(s) field-the first value that the value state of the "Antenna port(s)" field in table 1 is the "reserved" state, that is, a first index =14-12=2, and then a first element x selected from a (i = 0) according to the first index is the 3 rd element in a (i = 0). For example: a (i = 0) = [0,1,5,6], then the first element x =5. In this case, the first terminal may consider: the PDSCH DMRS port scheduled by the base station to the first terminal is configured corresponding to a field of ' Antenna port(s) ' whose value is 5, that is, the base station schedules PDSCH DMRS port 2 ' to the first terminal, and no second terminal multiplexes with the PDSCH DMRS ports in an FD-CDM manner.

In addition, the determination procedure for the first terminal to consider that no second terminal is multiplexed with these PDSCH DMRS ports by means of FD-CDM is as follows.

Assuming PDSCH DMRS configuration is shown in the left half of table 2: DMRS-Type =1, maxLength =2, "One code word", and a first array a (1) (i.e., N = 2) corresponds to the aforementioned configuration, then, since the number of domain value states of the left half "Antenna port(s)" field of table 2 is "reserved" is 1 and the length of a (1) is 1, it is assumed that a (1) = [26], at this time, if the domain value state of the "Antenna port(s)" field is 31, the first terminal calculates a first index = domain value of the Antenna port(s) field-the first domain value of the left half "Antenna port(s)" field of table 2, i.e., a first index =31-31 0, i.e., a (1) = [26], i.e., a first element x =26, the value of the first element corresponds to the PDSCH of the base station, which is scheduled for DMRS 0, and the PDSCH is 4, the length of the PDSCH is 1.

Further, considering that for Double-symbol DMRS in DMRS-Type =1, port groups {0, 1}, {4,5} are orthogonally multiplexed by FD-CDM, respectively, the first terminal may consider: the PDSCH DMRS ports 0,1 scheduled by the base station to the first terminal are orthogonally multiplexed by FD-CDM, but no second terminal uses PDSCH DMRS port 5.

In this implementation 1, the existing Antenna port domain (Antenna port (s)) in the DCI signaling is used to indicate to the terminal whether there is no other terminal and the PDSCH DMRS port(s) of the terminal to perform time-frequency resource multiplexing in the FD-CDM manner, so that the terminal can know whether the FD-CDM on the PDSCH DMRS port is "off" or "on", thereby ensuring the reliability of wireless communication.

In addition, compared to the related art that the unused Antenna port domain (i.e., the Antenna port domain in the reserved state) is used for indication, in the implementation 1, the problem that the number of domain values in the reserved state in the "Antenna port(s)" domain of the DCI is too small in the related art can be solved, and the base station is allowed to configure the "Antenna port(s)" domain of the DCI to the maximum extent according to the DMRS scheduling requirement, thereby ensuring the flexibility of base station scheduling.

Mode 2

When the domain value of the antenna port domain in the first DCI belongs to the target object and the domain value of the first indication domain 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 by the FD-CDM scheme; wherein the first indication domain is dedicated to indicate whether the PDSCH DMRS port of the second terminal and the PDSCH DMRS port of the first terminal are multiplexed by an FD-CDM mode.

It is to be understood that the first indication field may be a newly added indication field in the first DCI.

In addition, the first predetermined value and the second predetermined value mentioned in the present application may be predefined by a higher layer configuration or a protocol, and are not limited herein, for example, the first predetermined value and the second predetermined value may be predefined constants.

For example, when the field 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 field value of the "first indication field u newly added in the first DCI is the first predetermined value u0, the first terminal may determine: no other terminal is multiplexed with the PDSCH DMRS port of the first terminal by means of FD-CDM.

In implementation 2, by adding an indication field in DCI signaling to indicate to a terminal whether there is no other terminal and PDSCH DMRS port(s) of the terminal to perform time-frequency resource multiplexing in an FD-CDM manner, the first terminal can know whether FD-CDM on the PDSCH DMRS port is "closed" or "open", thereby ensuring reliability of wireless communication.

In addition, compared with the related art in which indication is performed by adding the bit length of the DCI, in this implementation mode 2, the problem of high detection complexity caused by modifying the DCI length in the related art can be solved, and in this implementation mode 2, the flexibility of base station scheduling can be ensured while the complexity of detecting the PDCCH/DCI by the terminal is not increased.

Mode 3

Under the condition that the domain value of the antenna port domain in the first DCI belongs to the target object and the domain value of the second indication domain in the first RRC signaling received by the first terminal is a second preset value, the first terminal determines that no PDSCH DMRS port of the second terminal and a PDSCH DMRS port of the first terminal are multiplexed in an FD-CDM mode; the second indication domain is used for indicating whether the PDSCH DMRS port of the second terminal and the PDSCH DMRS port of the first terminal are multiplexed in an FD-CDM mode. Optionally, the second indication field may be a newly added indication field in the first RRC signaling.

For example, when the field value of the "Antenna port (S)" field in the first DCI belongs to a target object (i.e., a target set) S (i) (i.e., a target object), and if the field value of the "second indication field v newly added in the first RRC is a second predetermined value v0, the first terminal may determine: and no other terminal is multiplexed with the PDSCH DMRS port of the first terminal in an FD-CDM mode.

Optionally, the first RRC signaling and the second RRC signaling mentioned in this application may be the same or different, and are not limited herein.

In this implementation 3, by adding an indication field in the RRC signaling to indicate to the terminal whether there is no time-frequency resource multiplexing between the terminal and the PDSCH DMRS port(s) of the terminal in an FD-CDM manner, the first terminal can know whether the FD-CDM on the PDSCH DMRS port is "off" or "on", thereby ensuring reliability of wireless communication.

In addition, compared to the related art that a bit field is added in the RRC signaling for indication, in this implementation 3, when the terminal is indicated by the added indication field, in the "Antenna port(s)" field of the first DCI, part of the field values are closed corresponding to the PDSCH DMRS FD-CDM, and part of the field values are opened corresponding to the PDSCH DMRS FD-CDM, the base station can still dynamically and flexibly schedule the PDSCH DMRS FD-CDM to be "closed" or "opened" according to the channel quality and the transmission code rate through the DCI signaling, and there is no problem of inflexible configuration of the PDSCH DMRS FD-CDM caused by a large effective time delay of the RRC in the related art.

Mode 4

And when the domain value of the antenna port domain in the first DCI belongs to the target object, the first terminal determines that the PDSCH DMRS port of the second terminal and the PDSCH DMRS port of the first terminal do not exist for multiplexing in an FD-CDM mode.

Illustratively, when the domain value of the "Antenna port (S)" field of the first DCI belongs to a target object (i.e., a target set) S (i), the first terminal considers: no other terminal is multiplexed with the PDSCH DMRS port of the first terminal by means of FD-CDM.

In this implementation 4, whether time-frequency resource multiplexing is performed between another terminal and the PDSCH DMRS port(s) of the terminal in an FD-CDM manner is indicated to the terminal through DCI signaling, so that the first terminal can know whether FD-CDM on the PDSCH DMRS port is "off" or "on", thereby ensuring reliability of wireless communication and flexibility of base station scheduling.

As shown in fig. 4, a flow diagram of a communication indication method 400 provided for an exemplary embodiment of the present application is shown, where the method 400 may be executed by, but not limited to, a network-side device, and specifically may be executed by hardware and/or software installed in the network-side device. In this embodiment, the method 400 may include at least the following steps.

S410, the network side equipment sends the first DCI to the first terminal.

The first DCI is used for the first terminal to determine whether a physical downlink shared channel PDSCH demodulation reference signal (DMRS) port of a second terminal and a PDSCH DMRS port of the first terminal are multiplexed in a frequency domain code division multiplexing (FD-CDM) mode; the second terminal is a terminal other than the first terminal.

In one implementation, the first DCI includes an antenna port field and/or a first indication field; wherein the antenna port domain and/or the first indication domain are dedicated to indicate whether there is no PDSCH DMRS port of the second terminal multiplexed with the PDSCH DMRS port of the first terminal in an FD-CDM manner.

In another implementation, the method further includes: the network side equipment sends a first Radio Resource Control (RRC) signaling to the first terminal; the first RRC signaling comprises a second indication domain, and the second indication domain is specially used for indicating whether the PDSCH DMRS port of the second terminal and the PDSCH DMRS port of the first terminal are multiplexed in an FD-CDM mode.

In another implementation, the method further includes: and the network side equipment sends a second RRC signaling to the first terminal. The second RRC signaling is used for the first terminal to configure N first objects, where 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, a corresponding relationship between a domain value of an antenna port domain and first information and second information is configured in the first table, the first information is a PDSCH DMRS port allocated to the first terminal by a network side device, the second information is a multiplexing relationship between a PDSCH and a PDSCH DMRS port, and N is greater than or equal to 1.

It is to be understood that the foregoing implementation procedures in the present embodiment can be referred to the related descriptions in the method embodiments 200 and/or 300, and achieve the same or corresponding technical effects, and are not repeated herein to avoid repetition.

It should be noted that, in the method 200-400 for communication indication provided in the embodiment of the present application, the execution subject may be a device for communication indication, or a control module of the device for communication indication for executing the method 200-400 for communication indication. The embodiments of the present application take the method 200-400 for the device for communication instruction to perform communication instruction as an example, and describe the device for communication instruction provided by the embodiments of the present application.

As shown in fig. 5, which is a schematic structural diagram of an apparatus 500 for indicating communication according to an exemplary embodiment of the present application, the apparatus 500 includes a determining module 510, configured to determine, when a first downlink control information DCI is received, whether there is no DMRS port of a PDSCH (physical downlink shared channel) demodulation reference signal of a second terminal multiplexed with a DMRS port of a PDSCH of a first terminal by using frequency domain code division multiplexing, FD-CDM, according to the target object and/or the first DCI; the target object is determined by the first terminal according to N first objects, the first object includes a first set or a first array, the first set and/or the first array is determined according to a first table, the first table is configured with a corresponding relationship between a domain value of an antenna port domain and first information and second information, the first information is a PDSCH DMRS port allocated to the first terminal by a network side device, and the second information is a multiplexing relationship between a PDSCH and a PDSCH DMRS port; the second terminal is other terminals except the first terminal, and N is an integer greater than or equal to 1.

In one implementation, the apparatus 500 further includes a first configuration module, and the first configuration module is configured to configure the target object.

In one implementation, the determining module 510 is configured to determine that there is no PDSCH DMRS port of the second terminal multiplexed with the PDSCH DMRS port of the first terminal by FD-CDM when the status of the antenna port domain in the first DCI is a target status, where the target status at least includes a reserved status.

In one implementation, the determining module 510 is further configured to determine, according to the first DCI and the target object, a configuration of a PDSCH DMRS port of the first terminal.

In one implementation, the determining module 510 is configured to determine the target array according to the target set if the target object is the target set; calculating a first index according to a domain value of an antenna port domain in the first DCI, determining a first element from the target array according to the first index, and determining a configuration corresponding to the first element as the configuration of the PDSCH DMRS port of the first terminal.

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

In one implementation, the determining module 510 is configured to determine that there is no PDSCH DMRS port of the second terminal multiplexed with the PDSCH DMRS port of the first terminal by FD-CDM when the domain value of the antenna port domain in the first DCI belongs to the target object and the domain value of the first indication domain in the first DCI is the first predetermined value; wherein the first indication domain is dedicated to indicate whether the PDSCH DMRS port of the second terminal and the PDSCH DMRS port of the first terminal are multiplexed by an FD-CDM mode.

In one implementation, the determining module 510 is configured to determine that there is no PDSCH DMRS port of the second terminal multiplexed with the PDSCH DMRS port of the first terminal by FD-CDM when the domain value of the antenna port domain in the first DCI belongs to the target object and the domain value of the second indication domain in the received first radio resource control RRC signaling is a second predetermined value; wherein the second indication domain is dedicated to indicate whether the PDSCH DMRS port of the second terminal and the PDSCH DMRS port of the first terminal are multiplexed by an FD-CDM mode.

In one implementation, the determining module 510 is configured to determine that there is no PDSCH DMRS port of the second terminal multiplexed with the PDSCH DMRS port of the first terminal by an FD-CDM scheme if a domain value of an antenna port domain in the first DCI belongs to the target object.

In one implementation, the determining module 510 is configured to any one of: determining the first object as the target object in the case that the N is 1; determining the target object from the N first objects according to the configuration of the PDSCH and/or the configuration of the DMRS, in case that N is an integer greater than 1.

In one implementation, the configuration of the first object includes at least one of: configuring through a second RRC signaling; the protocol is predefined.

In one implementation, the configuration through the second RRC signaling includes: and respectively indicating the N first objects through N third indication domains included in the second RRC signaling.

The communication indication apparatus 500 in the embodiment of the present application may be an apparatus, an apparatus or an electronic device having an operating system, or may be a component, an integrated circuit, or a chip in a terminal. The device or the electronic equipment can be a mobile terminal or a non-mobile terminal. For example, the mobile terminal may include, but is not limited to, the type of the terminal 11 listed above, and the non-mobile terminal may be a server, a Network Attached Storage (NAS), a Personal Computer (PC), a Television (TV), a teller machine, a self-service machine, or the like, and the embodiment of the present application is not limited in particular.

The communication indication apparatus 500 provided in the embodiment of the present application can implement each process implemented by the method embodiments of fig. 2 to fig. 3, and achieve the same technical effect, and for avoiding repetition, details are not repeated here.

As shown in fig. 6, a schematic structural diagram of a communication indication apparatus 600 provided for an exemplary embodiment of the present application, the apparatus 600 includes: a sending module 610, configured to send first downlink control information DCI to a first terminal, where the first DCI is used for the first terminal to determine whether there is no PDSCH demodulation reference signal DMRS port of a second terminal multiplexed with a PDSCH DMRS port of the first terminal in a frequency domain code division multiplexing (FD-CDM) manner; the second terminal is a terminal other than the first terminal.

In one implementation, the apparatus 600 further includes a second configuration module, where the second configuration module is configured to configure the first DCI.

In one implementation, the first DCI includes an antenna port field and/or a first indication field; wherein the antenna port domain and/or the first indication domain is dedicated to indicate whether there is no PDSCH DMRS port of the second terminal multiplexed with the PDSCH DMRS port of the first terminal in an FD-CDM manner.

In one implementation, the sending module 610 is further configured to send a first radio resource control, RRC, signaling to the first terminal; the first RRC signaling comprises a second indication domain, and the second indication domain is specially used for indicating whether the PDSCH DMRS port of the second terminal and the PDSCH DMRS port of the first terminal are multiplexed in an FD-CDM mode.

In one implementation, the sending module 610 is configured to send a second RRC signaling to the first terminal; the second RRC signaling is used for the first terminal to configure N first objects, where 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, a corresponding relationship between a domain value of an antenna port domain and first information and second information is configured in the first table, the first information is a PDSCH DMRS port allocated to the first terminal by a network side device, the second information is a multiplexing relationship between a PDSCH and a PDSCH DMRS port, and N is greater than or equal to 1.

The communication indication apparatus 600 in the embodiment of the present application may be an apparatus, an apparatus or an electronic device having an operating system, or may be a component, an integrated circuit, or a chip in a terminal. The apparatus or electronic device may be a mobile terminal or a non-mobile terminal. For example, the mobile terminal may include, but is not limited to, the above-listed type of terminal 11, and the non-mobile terminal may be a server, a Network Attached Storage (NAS), a Personal Computer (PC), a Television (TV), a teller machine, a kiosk, or the like, and the embodiments of the present application are not limited in particular.

The communication indication apparatus 600 provided in this embodiment of the application can implement each process implemented in the method embodiment of fig. 4, and achieve the same technical effect, and for avoiding repetition, details are not described here again.

Embodiments of the present application further provide a terminal, including a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to execute a program or instructions to implement the steps of the method as described in method embodiments 200 and/or 300. The terminal embodiment corresponds to the terminal-side method embodiment, and all implementation processes and implementation modes of the method embodiment can be applied to the terminal embodiment and can achieve the same technical effect. Specifically, fig. 7 is a schematic diagram of a hardware structure of a terminal implementing an embodiment of the present application.

The terminal 700 includes, but is not limited to: a radio frequency unit 701, a network module 702, an audio output unit 703, an input unit 704, a sensor 705, a display unit 706, a user input unit 707, an interface unit 708, a memory 709, a processor 710, and the like.

Those skilled in the art will appreciate that the terminal 700 may further include a power supply (e.g., a battery) for supplying power to various components, which may be logically connected to the processor 710 via a power management system, so as to manage charging, discharging, and power consumption management functions via the power management system. The terminal structure shown in fig. 7 does not constitute a limitation of the terminal, and the terminal may include more or less components than those shown, or combine some components, or arrange different components, and thus, detailed description thereof is omitted.

It should be understood that in the embodiment of the present application, the input Unit 704 may include a Graphics Processing Unit (GPU) 1041 and a microphone 7042, and the Graphics processor 7041 processes image data of still pictures or videos obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The display unit 706 may include a display panel 7061, and the display panel 7061 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 referred to as a touch screen. The touch panel 7071 may include two portions, a touch detection device and a touch controller. Other input devices 7072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein.

In this embodiment, the radio frequency unit 701 receives downlink data from a network side device and then processes the downlink data to the processor 710; in addition, the uplink data is sent to the network side equipment. In general, radio unit 701 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

The memory 709 may be used to store software programs or instructions as well as various data. The memory 709 may mainly include a storage program or instruction area and a storage data area, wherein the storage program or instruction area may store an operating system, an application program or instruction (such as a sound playing function, an image playing function, etc.) required by at least one function, and the like. In addition, the Memory 709 may include a high-speed random access Memory, and may further include a nonvolatile Memory, where the nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable Read-Only Memory (PROM), an Erasable Programmable Read-Only Memory (Erasable PROM, EPROM), an Electrically Erasable Programmable Read-Only Memory (EEPROM), or a flash Memory. Such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device.

Processor 710 may include one or more processing units; alternatively, processor 710 may integrate an application processor that handles primarily the operating system, user interface, and application programs or instructions, etc. and a modem processor that handles primarily wireless communications, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into processor 710.

Wherein, the processor 710 is configured to determine, according to a target object and/or the first DCI, whether there is no DMRS port of a PDSCH demodulation reference signal of a second terminal multiplexed with a DMRS port of a PDSCH of the first terminal by using frequency domain code division multiplexing (FD-CDM) scheme when receiving the first DCI; the target object is determined by the first terminal according to N first objects, the first object includes a first set or a first array, the first set and/or the first array is determined according to a first table, the first table is configured with a corresponding relationship between a domain value of an antenna port domain and first information and second information, the first information is a PDSCH DMRS port allocated to the first terminal by a network side device, and the second information is a multiplexing relationship between a PDSCH and a 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.

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

In one implementation, the processor 710 is further configured to determine a configuration of a PDSCH DMRS port of the first terminal according to the first DCI and the target object.

In one implementation, the processor 710 is further configured to determine the target array according to the target set if the target object is the target set; calculating a first index according to a domain value of an antenna port domain in the first DCI; and determining a first element from the target array according to the first index, and determining the configuration corresponding to the first element as the configuration of the PDSCH DMRS port of the first terminal.

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

In one implementation, the processor 710 is configured to determine that there is no PDSCH DMRS port of the second terminal multiplexed with the PDSCH DMRS port of the first terminal by FD-CDM when the domain value of the antenna port domain in the first DCI belongs to the target object and the domain value of the first indication domain in the first DCI is the first predetermined value; wherein the first indication domain is dedicated to indicate whether the PDSCH DMRS port of the second terminal and the PDSCH DMRS port of the first terminal are multiplexed by an FD-CDM mode.

In one implementation, the processor 710 is configured to determine that there is no PDSCH DMRS port of the second terminal multiplexed with the PDSCH DMRS port of the first terminal in an FD-CDM manner when the domain value of the antenna port domain in the first DCI belongs to the target object and the domain value of the second indication domain in the received first radio resource control RRC signaling is a second predetermined value; wherein the second indication domain is dedicated to indicate whether the PDSCH DMRS port of the second terminal and the PDSCH DMRS port of the first terminal are multiplexed by an FD-CDM mode.

In one implementation, the processor 710 is configured to determine that there is no PDSCH DMRS port of the second terminal multiplexed with the PDSCH DMRS port of the first terminal by FD-CDM when a domain value of an antenna port region in the first DCI belongs to the target object.

In one implementation, the radio frequency unit 701 is configured to: determining the first object as the target object in the case that the N is 1; determining the target object from the N first objects according to the configuration of the PDSCH and/or the configuration of the DMRS when the N is an integer greater than 1.

In one implementation, the configuration of the first object includes at least one of: configuring through a second RRC signaling; the protocol is predefined.

In one implementation manner, the configuration manner through the second RRC signaling includes: and respectively indicating the N first objects through N third indication domains included in the second RRC signaling.

In this embodiment, the first terminal determines whether there is no PDSCH DMRS port of the second terminal multiplexed with the PDSCH DMRS port of the first terminal by FD-CDM based on the target object determined from the N first sets or the plurality of first arrays and/or the received first DCI, so that the first terminal can know whether FD-CDM on the PDSCH DMRS port is "off" or "on", thereby ensuring reliability of wireless communication.

An embodiment of the present application further provides a network-side device, which includes a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to execute a program or instructions to implement the steps of the method as described in embodiment 400. The embodiment of the network side device corresponds to the embodiment of the method of the network side device, and all implementation processes and implementation manners of the embodiment of the method can be applied to the embodiment of the network side device, and the same technical effects can be achieved.

Specifically, the embodiment of the application further provides a network side device. As shown in fig. 8, the network apparatus 800 includes: antenna 801, radio frequency device 802, baseband device 803. The antenna 801 is connected to a radio frequency device 802. In the uplink direction, the rf device 802 receives information through the antenna 801 and sends the received information to the baseband device 803 for processing. In the downlink direction, the baseband device 803 processes information to be transmitted and transmits the information to the radio frequency device 802, and the radio frequency device 802 processes the received information and transmits the processed information through the antenna 801.

The above band processing apparatus may be located in the baseband apparatus 803, and the method performed by the network side device in the above embodiment may be implemented in the baseband apparatus 803, where the baseband apparatus 803 includes a processor 804 and a memory 805.

The baseband apparatus 803 may include, for example, at least one baseband board, on which a plurality of chips are disposed, as shown in fig. 8, where one chip, for example, the processor 804, is connected to the memory 805 to call up the program in the memory 805 to perform the network device operations shown in the above method embodiments.

The baseband device 803 may further include a network interface 806, such as a Common Public Radio Interface (CPRI), for exchanging information with the radio frequency device 802.

Specifically, the network side device of the embodiment of the present invention further includes: the instructions or programs stored in the memory 805 and capable of being executed on the processor 804, and the processor 804 calls the instructions or programs in the memory 805 to execute the methods executed by the modules shown in fig. 6, and achieve the same technical effects, which are not described herein for avoiding repetition.

The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by a processor, the program or the instruction implements each process of the above-mentioned communication indication method embodiment or the communication indication method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.

Wherein, the processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a Read-Only Memory (ROM).

The embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a network-side device program or an instruction, to implement each process of the above communication indication method embodiment or the communication indication method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.

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

The embodiment of the present application further provides a computer program product, where the computer program product includes a processor, a memory, and a program or an instruction stored in the memory and capable of running on the processor, and when the program or the instruction is executed by the processor, the processes of the communication indication method embodiment or the communication indication method embodiment are implemented, and the same technical effect can be achieved, and details are not repeated here to avoid repetition.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the element defined by the phrases "comprising a" \8230; "does not exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order with respect to the functions noted, for example, the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

Through the above description of the embodiments, those skilled in the art will clearly understand that the above embodiment method can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better embodiment. Based on such understanding, the technical solutions of the present application may be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present application.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the scope of the invention as defined by the appended claims.

Claims (33)

1. A method of indicating a communication, comprising:

under the condition that a first downlink control information DCI is received by a first terminal, determining whether a physical downlink shared channel PDSCH demodulation reference signal DMRS port of a second terminal and a PDSCH DMRS port of the first terminal are multiplexed in a frequency domain code division multiplexing (FD-CDM) mode according to a target object and/or the first DCI;

the target object is determined by the first terminal according to N first objects, the first object includes a first set or a first array, the first set or the first array is determined according to a first table, a corresponding relationship between a domain value of an antenna port domain and first information and second information is configured in the first table, the first information is a PDSCH DMRS port allocated to the first terminal by a network side device, and the second information is a multiplexing relationship between a PDSCH and a 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.

2. The method of claim 1, wherein the step of determining whether there is no PDSCH DMRS port of the second terminal multiplexed with the PDSCH DMRS port of the first terminal by FD-CDM based on the first DCI comprises:

and under the condition that the state of the antenna port domain in the first DCI is a target state, determining that no PDSCH DMRS port of the second terminal and no PDSCH DMRS port of the first terminal are multiplexed in an FD-CDM mode, wherein the target state at least comprises a reserved state.

3. The method of claim 2, wherein after the step of determining that there is no multiplexing of the PDSCH DMRS port of the second terminal with the PDSCH DMRS port of the first terminal by FD-CDM, the method further comprises:

and the first terminal determines the configuration of the PDSCH DMRS port of the first terminal according to the first DCI and the target object.

4. The method of claim 3, wherein the step of the first terminal determining the configuration of the PDSCH DMRS port of the first terminal based on the first DCI and the target object comprises:

under the condition that the target object is a target set, the first terminal determines a target array according to the target set;

calculating a first index according to a domain value of an antenna port domain in the first DCI;

and determining a first element from the target array according to the first index, and determining the configuration corresponding to the first element as the configuration of the PDSCH DMRS port of the first terminal.

5. The method of claim 3, wherein the step of the first terminal determining the configuration of the PDSCH DMRS port of the first terminal based on the first DCI and the target object comprises:

under the condition that the target object is a target array, calculating a first index according to the domain value of the antenna port domain in the first DCI;

and determining a second element from the target array according to the first index, and determining the configuration corresponding to the second element as the configuration of the PDSCH DMRS port of the first terminal.

6. The method of claim 1, wherein the step of determining whether there is no PDSCH DMRS port of the second terminal multiplexed with the PDSCH DMRS port of the first terminal by FD-CDM based on the target object and the first DCI comprises:

when the domain value of the antenna port domain in the first DCI belongs to the target object and the domain value of the first indication domain 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 in an FD-CDM manner;

wherein the first indication domain is dedicated to indicate whether the PDSCH DMRS port of the second terminal and the PDSCH DMRS port of the first terminal are multiplexed by an FD-CDM mode.

7. The method of claim 1, wherein the step of determining whether there is a PDSCH DMRS port of the second terminal multiplexed with a PDSCH DMRS port of the first terminal by FD-CDM based on the target object and the first DCI comprises:

under the condition that the domain value of the antenna port domain in the first DCI belongs to the target object and the domain value of the second indication domain in the first Radio Resource Control (RRC) signaling received by the first terminal is a second preset value, the first terminal determines that no PDSCH DMRS port of the second terminal and a PDSCH DMRS port of the first terminal are multiplexed in an FD-CDM mode;

wherein the second indication domain is dedicated to indicate whether the PDSCH DMRS port of the second terminal and the PDSCH DMRS port of the first terminal are multiplexed by an FD-CDM mode.

8. The method of claim 1, wherein the step of determining whether there is no PDSCH DMRS port of the second terminal multiplexed with the PDSCH DMRS port of the first terminal by FD-CDM based on the first DCI and the target object comprises:

and when the domain value of the antenna port domain in the first DCI belongs to the target object, the first terminal determines that the PDSCH DMRS port of the second terminal and the PDSCH DMRS port of the first terminal do not exist for multiplexing in an FD-CDM mode.

9. The method of any one of claims 1 to 8, wherein the step of determining the target object from the N first objects comprises any one of:

determining the first object as the target object in the case that the N is 1;

determining the target object from the N first objects according to the configuration of the PDSCH and/or the configuration of the DMRS when the N is an integer greater than 1.

10. The method of any of claims 1-8, wherein the configuration of the first object comprises at least one of:

configuring through a second RRC signaling;

the protocol is predefined.

11. The method of claim 10, wherein the configuring via the second RRC signaling comprises:

and respectively indicating the N first objects through N third indication domains included in the second RRC signaling.

12. A method of communication indication, comprising:

the network side equipment sends first downlink control information DCI to a first terminal;

the first DCI is used for the first terminal to determine whether a physical downlink shared channel PDSCH demodulation reference signal (DMRS) port of a second terminal and a PDSCH DMRS port of the first terminal are multiplexed in a frequency domain code division multiplexing (FD-CDM) mode, wherein the second terminal is other than the first terminal.

13. The method of claim 12, wherein an antenna port field and/or a first indication field is included in the first DCI;

wherein the antenna port domain and/or the first indication domain is dedicated to indicate whether there is no PDSCH DMRS port of the second terminal multiplexed with the PDSCH DMRS port of the first terminal by means of FD-CDM.

14. The method of claim 12, wherein the method further comprises:

the network side equipment sends a first Radio Resource Control (RRC) signaling to the first terminal;

the first RRC signaling comprises a second indication domain, and the second indication domain is specially used for indicating whether the PDSCH DMRS port of the second terminal and the PDSCH DMRS port of the first terminal are multiplexed in an FD-CDM mode.

15. The method of claim 12, wherein before the step of the network side device sending the first downlink control information DCI to the first terminal, the method further comprises:

the network side equipment sends a second RRC signaling to the first terminal;

the second RRC signaling is used for the first terminal to configure N first objects, where 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, a corresponding relationship between a domain value of an antenna port domain and first information and second information is configured in the first table, the first information is a PDSCH DMRS port allocated to the first terminal by a network side device, the second information is a multiplexing relationship between a PDSCH and a PDSCH DMRS port, and N is greater than or equal to 1.

16. A communication indication apparatus, applied to a first terminal, the apparatus comprising:

a determining module, configured to determine, by the first terminal, whether there is no DMRS port of a PDSCH demodulation reference signal of a second terminal multiplexed with a PDSCH DMRS port of the first terminal in a frequency domain code division multiplexing (FD-CDM) manner according to a target object and/or the first DCI when the first terminal receives the first DCI;

the target object is determined by the first terminal according to N first objects, the first object includes a first set or a first array, the first set and/or the first array is determined according to a first table, the first table is configured with a corresponding relationship between a domain value of an antenna port domain and first information and second information, the first information is a PDSCH DMRS port allocated to the first terminal by a network side device, and the second information is a multiplexing relationship between a PDSCH and a 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.

17. The apparatus of claim 16, wherein the means for determining is configured to determine that there is no PDSCH DMRS port of the second terminal multiplexed with the PDSCH DMRS port of the first terminal by FD-CDM in the case that the state of the antenna port domain in the first DCI is a target state, wherein the target state comprises at least a reservation state.

18. The apparatus of claim 16, wherein the determining module is further for determining a configuration of a PDSCH DMRS port for the first terminal based on the first DCI and the target object.

19. The apparatus of claim 18, wherein the determining module is configured to determine a target array from the target set if the target object is the target set; calculating a first index according to a domain value of an antenna port domain in the first DCI; and determining a first element from the target array according to the first index, and determining the configuration corresponding to the first element as the configuration of the PDSCH DMRS port of the first terminal.

20. The apparatus of claim 18, wherein the determining module is to calculate a first index from domain values of antenna port domains in the first DCI if the target object is a target array; and determining a second element from the target array according to the first index, and determining the configuration corresponding to the second element as the configuration of the PDSCH DMRS port of the first terminal.

21. The apparatus of claim 16, wherein the determining module is configured to determine that there is no PDSCH DMRS port of a second terminal multiplexed with the PDSCH DMRS port of the first terminal by FD-CDM in the case that a domain value of an antenna port domain in the first DCI belongs to the target object and a domain value of a first indication domain in the first DCI is a first predetermined value;

wherein the first indication domain is dedicated to indicate whether the PDSCH DMRS port of the second terminal and the PDSCH DMRS port of the first terminal are multiplexed by an FD-CDM mode.

22. The apparatus of claim 16, wherein the determining module is configured to determine that there is no PDSCH DMRS port of a second terminal multiplexed with a PDSCH DMRS port of the first terminal by FD-CDM in a case that a domain value of an antenna port domain in the first DCI belongs to the target object and a domain value of a second indication domain in the received first radio resource control, RRC, signaling is a second predetermined value;

wherein the second indication domain is dedicated to indicate whether the PDSCH DMRS port of the second terminal and the PDSCH DMRS port of the first terminal are multiplexed by an FD-CDM mode.

23. The apparatus of claim 16, wherein the means for determining is configured to determine that there is no PDSCH DMRS port of a second terminal multiplexed with a PDSCH DMRS port of the first terminal by FD-CDM in the event that a domain value of an antenna port domain in the first DCI belongs to the target object.

24. The apparatus of any one of claims 16-23, wherein the determination module is to any one of:

in the case where the N is 1, determining the first object as the target object;

determining the target object from the N first objects according to the configuration of the PDSCH and/or the configuration of the DMRS when the N is an integer greater than 1.

25. The apparatus of any of claims 16-23, wherein the first object is configured in a manner that includes at least one of:

configuring through a second RRC signaling;

the protocol is predefined.

26. The apparatus of claim 25, wherein the means for configuring via the second RRC signaling comprises:

respectively indicating the first object through N third indication domains included in the second RRC signaling.

27. A communication indication apparatus, comprising:

a sending module, configured to send first downlink control information DCI to a first terminal, where the first DCI is used for the first terminal to determine whether there is no physical downlink shared channel PDSCH demodulation reference signal DMRS port of a second terminal multiplexed with a PDSCH DMRS port of the first terminal by a frequency domain code division multiplexing (FD-CDM) method, and the second terminal is a terminal other than the first terminal.

28. The apparatus of claim 27, wherein an antenna port field and/or a first indication field is included in the first DCI;

wherein the antenna port domain and/or the first indication domain are/is dedicated to indicate whether the PDSCH DMRS port of the second terminal and the PDSCH DMRS port of the first terminal are/is multiplexed by an FD-CDM mode.

29. The apparatus of claim 27, wherein the transmitting module is further for transmitting first radio resource control, RRC, signaling to the first terminal;

the first RRC signaling comprises a second indication domain, and the second indication domain is specially used for indicating whether the PDSCH DMRS port of the second terminal and the PDSCH DMRS port of the first terminal are multiplexed in an FD-CDM mode.

30. The apparatus of claim 27, wherein the means for sending sends a second RRC signaling to the first terminal; the second RRC signaling is used for the first terminal to configure N first objects, where 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, a corresponding relationship between a domain value of an antenna port domain and first information and second information is configured in the first table, the first information is a PDSCH DMRS port allocated to the first terminal by a network side device, the second information is a multiplexing relationship between a PDSCH and a PDSCH DMRS port, and N is greater than or equal to 1.

31. A terminal comprising a processor, a memory and a program or instructions stored on the memory and executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method of communicating an indication according to any one of claims 1 to 11.

32. A network-side device comprising a processor, a memory, and a program or instructions stored on the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the communication indication method according to any one of claims 12 to 15.

33. A readable storage medium, characterized in that a program or instructions are stored thereon, which program or instructions, when executed by a processor, implement the method of communication indication according to any one of claims 1 to 11, or the steps of the method of communication indication according to any one of claims 12 to 15.

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