CN118316485A

CN118316485A - Communication method, device and storage medium

Info

Publication number: CN118316485A
Application number: CN202410389159.0A
Authority: CN
Inventors: 陈哲
Original assignee: Honor Device Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2024-03-29
Filing date: 2024-03-29
Publication date: 2024-07-09

Abstract

The embodiment of the application provides a communication method, equipment and a storage medium. The method comprises the following steps: the network equipment determines a plurality of indication information, wherein each indication information is used for indicating the identification of the information, the information is any information in the plurality of information, the information indicates whether a DMRS port corresponding to any one antenna group in a plurality of antenna groups or a CDM group corresponding to the antenna group is occupied, the DMRS ports corresponding to the antenna groups are positioned in the same CDM group, and the DMRS ports corresponding to different antenna groups are positioned in different CDM groups; and transmitting a plurality of indication information, wherein when the information indicates the DMRS port corresponding to the antenna group, the information also indicates the number of CDM groups without data, or transmitting first indication information, wherein the first indication information is used for indicating the number of CDM groups without data. In the above scheme, the DMRS ports corresponding to each antenna group are located in the same CDM group, and the DMRS ports corresponding to different antenna groups are located in different CDM groups, so that interference between the antenna groups can be effectively suppressed in MIMO equalization processing.

Description

Communication method, device and storage medium

Technical Field

The present application relates to the field of communications technologies, and in particular, to a communications method, apparatus, and storage medium.

Background

Existing communication systems can support up to 8 layers of Downlink (DL) Single User (SU) -multiple input multiple output (multiple input multiple output, MIMO) transmission, but conventional 8 layers of receivers have high complexity and cost, and low complexity 8 layers of receivers need to be studied.

In the related art, in order to reduce the complexity of the 8-layer receiver, the 8-layer receiver may be divided into 2 4-layer subreceivers, and independent MIMO equalization processing may be performed on antenna groups corresponding to the two subreceivers, respectively. Since this independent MIMO equalization process uses only channel information of the corresponding antenna group and does not use channel information of all antennas, there is no way to suppress interference caused by another antenna group.

Disclosure of Invention

The embodiment of the application provides a communication method, a device and a storage medium, wherein DMRS ports corresponding to each antenna group are positioned in the same CDM group, and DMRS ports corresponding to different antenna groups are positioned in different CDM groups, so that interference among the antenna groups can be effectively inhibited in MIMO equalization processing.

In a first aspect, an embodiment of the present application provides a communication method, including: receiving a plurality of indication information, wherein each indication information is used for indicating the identification of information, the information is any information in the plurality of information, the information indicates whether a DMRS port corresponding to any one antenna group in a plurality of antenna groups or a CDM group corresponding to the antenna group is occupied, the DMRS ports corresponding to the antenna groups are positioned in the same CDM group, and the DMRS ports corresponding to different antenna groups are positioned in different CDM groups; when the information indicates the DMRS port corresponding to the antenna group, the information further indicates the number of CDM groups without data, or receives first indication information indicating the number of CDM groups without data.

In one possible implementation, the information further indicates a number of transmission layers corresponding to the antenna group.

In one possible implementation, the number of transmission layers corresponding to one antenna group is the same as the number of DMRS ports corresponding to the antenna group.

In one possible implementation, the information also indicates the number of symbols occupied by the pre-DMRS.

In one possible implementation, the functional blocks of baseband processing for different antenna groups are different.

In one possible implementation manner, the plurality of indication information includes second indication information and third indication information, the second indication information is used for indicating an identifier of the first information, the third indication information is used for indicating an identifier of the second information, the first information is any information in the plurality of first information, the first information indicates a DMRS port corresponding to the first antenna group, and the DMRS port corresponding to the first antenna group is at least one DMRS port corresponding to the first CDM group; the second information is any information in the plurality of second information, the second information indicates a DMRS port corresponding to the second antenna group, and the DMRS port corresponding to the second antenna group is at least one DMRS port corresponding to the second CDM group.

In one possible implementation, the first CDM group is any CDM group in DMRS configuration type 1; the second CDM group is a CDM group other than the first CDM group in DMRS configuration type 1.

In one possible implementation, the first CDM group is any CDM group in DMRS configuration type 2; the second CDM group is any CDM group other than the first CDM group in DMRS configuration type 2.

In one possible implementation, the plurality of indication information is carried in a DCI, MAC CE or RRC message.

In one possible implementation, the first indication information is carried in a DCI, MAC CE or RRC message.

In one possible implementation, the plurality of antenna groups are receiving antenna groups of the terminal device.

In a second aspect, an embodiment of the present application provides a communication method, including: determining a plurality of indication information, wherein each indication information is used for indicating the identification of information, the information is any information in the plurality of information, the information indicates whether a DMRS port corresponding to any one antenna group in a plurality of antenna groups or a CDM group corresponding to the antenna group is occupied, the DMRS ports corresponding to the antenna groups are positioned in the same CDM group, and the DMRS ports corresponding to different antenna groups are positioned in different CDM groups; and transmitting a plurality of indication information, wherein when the information indicates the DMRS port corresponding to the antenna group, the information also indicates the number of CDM groups without data, or transmitting first indication information, wherein the first indication information is used for indicating the number of CDM groups without data.

In one possible implementation, the plurality of second indication information is carried in a DCI, MAC CE or RRC message.

In a third aspect, an embodiment of the present application provides a communication apparatus, including: the receiving module is used for receiving a plurality of indication information, each indication information is used for indicating the identification of the information, the information is any information in the plurality of information, the information indicates whether a DMRS port corresponding to any one antenna group in the plurality of antenna groups or a CDM group corresponding to the antenna group is occupied, the DMRS ports corresponding to the antenna groups are positioned in the same CDM group, and the DMRS ports corresponding to different antenna groups are positioned in different CDM groups; when the information indicates the DMRS port corresponding to the antenna group, the information further indicates the number of CDM groups without data, or receives first indication information indicating the number of CDM groups without data.

In a fourth aspect, an embodiment of the present application provides a communication apparatus, including: a determining module, configured to determine multiple indication information, where each indication information is used for indicating an identification of the information, where the information is any information in the multiple information, and the information indicates whether a DMRS port corresponding to any one of multiple antenna groups or a CDM group corresponding to the antenna group is occupied, the DMRS ports corresponding to the antenna groups are located in the same CDM group, and the DMRS ports corresponding to different antenna groups are located in different CDM groups; and a transmitting module, configured to transmit a plurality of indication information, where when the information indicates the DMRS port corresponding to the antenna group, the information further indicates the number of CDM groups without data, or transmit first indication information, where the first indication information is used to indicate the number of CDM groups without data.

In a fifth aspect, an embodiment of the present application provides a terminal device, including: a processor and a memory; the memory stores computer-executable instructions; the processor executes computer-executable instructions stored in the memory to cause the terminal device to perform a method as described in the first aspect or any one of the possible implementations of the first aspect.

In a sixth aspect, an embodiment of the present application provides a network device, including: a processor and a memory; the memory stores computer-executable instructions; the processor executes computer-executable instructions stored in the memory to cause the network device to perform a method as described in the second aspect or any one of the possible implementations of the second aspect.

In a seventh aspect, embodiments of the present application provide a computer readable storage medium storing a computer program or instructions which, when executed by a processor, implement a method as described in the first aspect or any one of the possible implementations of the first aspect, or implement a method as described in the second aspect or any one of the possible implementations of the second aspect.

In an eighth aspect, embodiments of the present application provide a computer program product comprising a computer program which, when run, causes a computer to perform the method as described in the first aspect or any one of the possible implementations of the first aspect, or causes a computer to perform the method as described in the second aspect or any one of the possible implementations of the second aspect.

In a ninth aspect, embodiments of the present application provide a chip or chip system comprising at least one processor and a communication interface, the communication interface and the at least one processor being interconnected by wires, the at least one processor being adapted to run a computer program or instructions to perform the method as described in the first aspect or any one of the possible implementations of the first aspect or to perform the method as described in the second aspect or any one of the possible implementations of the second aspect. The communication interface in the chip can be an input/output interface, a pin, a circuit or the like.

Drawings

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

Fig. 2 is a schematic structural diagram of 2 sub-receivers according to an embodiment of the present application;

Fig. 3A is a schematic structural diagram of type 1 of 2 subreceivers according to an embodiment of the present application;

fig. 3B is a schematic structural diagram of type 2 of 2 subreceivers according to an embodiment of the present application;

fig. 3C is a schematic structural diagram of type 3 of 2 subreceivers according to an embodiment of the present application;

fig. 4A is a schematic diagram of DMRS resources of DMRS configuration type 1 in an embodiment of the present application;

fig. 4B is a schematic diagram of DMRS resources of DMRS configuration type 2 in an embodiment of the present application;

Fig. 5 is a schematic flow chart of a communication method according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a communication device according to an embodiment of the present application;

Fig. 7 is a schematic structural diagram of another communication device according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a terminal device according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of a network device according to an embodiment of the present application.

Detailed Description

In embodiments of the present application, the words "first," "second," and the like are used to distinguish between identical or similar items that have substantially the same function and effect. For example, the first indication information and the second indication information are merely for distinguishing different indication information, and the order of the different indication information is not limited. It will be appreciated by those of skill in the art that the words "first," "second," and the like do not limit the amount and order of execution, and that the words "first," "second," and the like do not necessarily differ.

For purposes of clarity in describing the embodiments of the present application, the words "exemplary" or "such as" are used herein to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "for example" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.

In the embodiments of the present application, "at least one" means one or more, and "a plurality" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a alone, a and B together, and B alone, wherein a, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b, or c may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or plural.

It should be noted that "when (in) … …" or "when (in) … …" in the embodiment of the present application may be an instant when a certain situation occurs, or may be a period of time after a certain situation occurs, which is not particularly limited in the embodiment of the present application.

In order to better understand the communication method provided by the embodiment of the present application, the following first describes the architecture of the communication system of the embodiment of the present application.

Fig. 1 is a schematic diagram of a communication system according to an embodiment of the present application. As shown in fig. 1, the communication system 100 includes a terminal device 101 and a network device 102. The terminal device 101 includes a plurality of antenna groups, through which the terminal device 101 communicates wirelessly with the network device 102.

The terminal device related to the embodiment of the application can also be called a terminal, can be a device with a wireless receiving and transmitting function, and can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; can also be deployed on the water surface (such as ships, etc.); but may also be deployed in the air (e.g., on aircraft, balloon, satellite, etc.). The terminal device may be a User Equipment (UE), wherein the UE includes a handheld device, an in-vehicle device, a wearable device, or a computing device with wireless communication capabilities. The UE may be a mobile phone (mobile phone), a tablet computer, or a computer with a wireless transceiver function, for example. The terminal device may also be a Virtual Reality (VR) terminal device, an augmented reality (augmented reality, AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in unmanned driving, a wireless terminal device in telemedicine, a wireless terminal device in smart grid, a wireless terminal device in smart city (SMART CITY), a wireless terminal device in smart home (smart home), etc. In the embodiment of the present application, the device for implementing the function of the terminal device may be the terminal device; or a device, such as a chip system, capable of supporting the terminal device to realize the function, which may be installed in the terminal device.

The network device according to the embodiment of the present application may be an access network (radio access network, RAN) device in a mobile communication system, where the RAN device is mainly responsible for radio resource management, quality of service (quality of service, qoS) management, data compression, encryption, etc. on the air interface side. For example: base stations NodeB, evolved base stations eNodeB, base stations in a 5G mobile communication system or a new generation radio (NR) communication system, base stations in a future mobile communication system, etc. In the embodiment of the present application, the means for implementing the function of the network device may be the network device, or may be a means capable of supporting the network device to implement the function, for example, a chip system, and the apparatus may be installed in the network device.

The technical solution provided by the embodiment of the application can be applied to a long term evolution (long term evolution, LTE) architecture, a universal mobile telecommunications system (universal mobile telecommunications system, UMTS) terrestrial radio access network (UMTS terrestrial radio access network, UTRAN) architecture, or a global system for mobile communications (global system for mobile communication, GSM)/enhanced data rates for GSM evolution (ENHANCED DATA RATE for GSM evolution, EDGE) system radio access network (GSM EDGEradio access network, GERAN) architecture. In addition, the technical solution provided in the embodiment of the present application may be applied to any other wireless communication system having similar structures and functions, for example, a public land mobile network (public land mobile network, PLMN) system, a 5G communication system or a 5G after communication system, etc., which is not limited in any way.

In order to facilitate the clear description of the technical solutions of the embodiments of the present application, the following simply describes some terms and techniques involved in the embodiments of the present application:

1. Receiver type

Independent MIMO detection is performed by dividing the multi-layer receiver into 2 sub-receivers, which can significantly reduce the complexity of MIMO reception, e.g., a 6-layer receiver can be divided into 2 3-layer sub-receivers and an 8-layer receiver can be divided into 2 4-layer sub-receivers. Wherein each sub-receiver corresponds to an antenna group. As shown in fig. 2, the base station may generate two beams through multiple antennas; the antenna group 0 at the terminal device side may receive the data and the reference signal transmitted on the beam 0, and the antenna group 1 may receive the data and the reference signal transmitted on the beam 1.

For the structure of the above-mentioned receiver, in a specific implementation, multiple receiver types may be derived according to different functional division manners:

Type 1: the antennas of the 2 subreceivers, the radio frequency front end (radio frequency front-end, RFE) and the baseband processing functions are completely independent, as shown in fig. 3A.

An advantage of this type is that an 8-layer receiver can be constructed very easily using 2 existing 4-layer receivers.

Type 2: the 2 subreceivers share a channel decoding function, and the antenna, RFE, and other baseband processing functions are completely independent, as shown in fig. 3B.

When the base station schedules a physical downlink shared channel (physical downlink SHARED CHANNEL, PDSCH) using layer 2 transmission, and indicates the reception strategy is: when antenna group 1 receives 1 layer and antenna group 2 receives another 1 layer, only 1 Code Word (CW) is carried on the PDSCH because the number of transmission layers does not exceed 4 according to the current protocol.

For type 1, since the functions are completely independent, all 2 channel decoding modules can only take part of bits of the CW, so that decoding of the CW cannot be completed, and in order to solve the problem, enhancement of the protocol is required. Whereas for type 2, since 2 channels share a channel decoding module, all bits of the CW are available to complete decoding without having to make additional enhancements to the protocol.

The advantage of type 2 is therefore that existing protocols can be reused to a large extent or that the protocol is less modified.

Type 3: this type is substantially identical to the functional architecture of a conventional 8-layer receiver, as shown in fig. 3C, with the difference that: this type introduces a limitation in the MIMO equalization module, defining that for PDSCH with transmission layer number >4, MIMO equalization is performed independently for 2 antenna groups (same as type 1 and type 2), while for PDSCH with transmission layer number less than or equal to 4, MIMO equalization is performed jointly for 2 antenna groups (same as conventional 8Rx receiver).

The advantage of this type is that the complexity of MIMO equalization for transmission layer numbers >4 is reduced while maintaining the performance of MIMO equalization for transmission layer numbers 4 or less.

The number of transmission layers may also be referred to as rank (rank).

The scheduling indication of the base station is different for different receiver structures, e.g.:

For type 1: when rank > 1, PDSCH always carries 2CW;

For type 2/3: when the rank is less than or equal to 4, the PDSCH carries 1CW, and when the rank is more than 4, the PDSCH carries 2CW.

2. Demodulation reference signal (demodulation REFERENCE SIGNAL, DMRS) configuration type

NR supports 2 DMRS configuration types: DMRS configuration type 1, DMRS configuration type 2.

DMRS configuration type 1 includes 2 code division multiplexing (code division multiplexing, CDM) groups, and supports up to 8 DMRS ports, and a specific Resource Element (RE) structure may be as shown in fig. 4A, where the horizontal axis is a symbol and the vertical axis is a subcarrier. CDM group 0, carrying DMRS ports 0,1,4,5; CDM group 1, carrying DMRS ports 2,3,6,7.

DMRS configuration type 2, including 3 CDM groups, supports up to 12 DMRS ports, and a specific RE structure may be shown in fig. 4B, where the horizontal axis is a symbol and the vertical axis is a subcarrier. CDM group 0, carrying DMRS ports 0,1,6,7; CDM group 1, carrying DMRS ports 2,3,8,9; CDM group 2, carrying DMRS ports 4,5,10,11.

3. Currently, when a base station schedules a terminal device, an antenna port field (antenna port) in downlink control information (downlink control information, DCI) may be used to indicate a DMRS port, as shown in table 1 and table 2:

Table 1DMRS port assignment (Antenna port(s) (1000+dmrs port), DMRS-type=1, maxlength=2) when 2 symbols are configured at most under DMRS configuration Type 1

Table 2DMRS port assignment (Antenna port(s) (1000+dmrs port), DMRS-type=2, maxlength=2) when 2 symbols are at most configured under DMRS configuration Type 2

To obtain spatial multiplexing gain, 2 antenna groups are typically placed at 2 remote locations, such as: respectively in the upper and lower parts of the terminal, which means that the channel characteristics (e.g. fading, doppler) corresponding to the 2 antenna groups may differ significantly. For receiver type 1, to reduce complexity, an independent MIMO equalization process is employed for the 2 antenna groups, which is more sensitive to interference between the antenna groups than conventional joint MIMO equalization processes.

Based on the technical problems, the embodiment of the application provides a communication method, which mainly comprises the following steps: the network equipment determines a plurality of indication information, wherein each indication information is used for indicating the identification of the information, the information is any information in the plurality of information, the information indicates whether a DMRS port corresponding to any one antenna group in a plurality of antenna groups or a CDM group corresponding to the antenna group is occupied, the DMRS ports corresponding to the antenna groups are positioned in the same CDM group, and the DMRS ports corresponding to different antenna groups are positioned in different CDM groups; and transmitting a plurality of indication information, wherein when the information indicates the DMRS port corresponding to the antenna group, the information also indicates the number of CDM groups which do not bear data, or transmitting first indication information, wherein the first indication information is used for indicating the number of CDM groups which do not bear data. Since the DMRS ports corresponding to each antenna group are located in the same CDM group and the DMRS ports corresponding to different antenna groups are located in different CDM groups, the influence of interference between the antenna groups on channel estimation can be reduced; in addition, the interference intensity caused by other antenna groups can be accurately estimated on each antenna group, so that interference among the antenna groups can be more effectively suppressed in MIMO equalization processing, and the performance is improved.

The technical scheme shown in the application is described in detail by specific examples. It should be noted that the following embodiments may exist alone or in combination with each other. For the same or similar matters, for example, explanation of terms or nouns, explanation of steps, etc., reference may be made to each other in different embodiments, and the explanation is not repeated.

Fig. 5 is a flow chart of a communication method according to an embodiment of the present application. As shown in fig. 5, the communication method includes:

s501, the network device determines a plurality of indication information.

Each indication information is used for indicating the identification of information, the information is any information in a plurality of pieces of information, the information indicates whether a DMRS port corresponding to any antenna group in a plurality of antenna groups or a CDM group corresponding to the antenna group is occupied, the DMRS port corresponding to the antenna group is located in the same CDM group, and the DMRS ports corresponding to different antenna groups are located in different CDM groups.

The terminal device comprises a plurality of antenna groups, which may be receiving antenna groups of the terminal device, i.e. antenna groups of the terminal device for receiving downlink data.

For any one antenna group, the DMRS port corresponding to the antenna group may be the DMRS port corresponding to the transmission layer corresponding to the antenna group.

The identification of the information may be indicated with a bit field value (value) indicating the information.

The number of the indication information is the same as the number of the receiving antenna groups of the terminal equipment, and each indication information indicates whether the DMRS port corresponding to any one of the antenna groups or the CDM group corresponding to the antenna group is occupied.

For example, if the number of the indication information is N, where N is a positive integer greater than 1, the 1 st indication information indicates whether the DMRS port corresponding to the 1 st antenna group or the CDM group corresponding to the 1 st antenna group is occupied, and the DMRS port corresponding to the 1 st antenna group is located in the 1 st CDM group; the 2 nd indication information indicates whether the DMRS port corresponding to the 2 nd antenna group or the CDM group corresponding to the 2 nd antenna group is occupied, the DMRS port corresponding to the 2 nd antenna group is located in the 2 nd CDM group, and so on, the nth indication information indicates whether the DMRS port corresponding to the nth antenna group or the CDM group corresponding to the nth antenna group is occupied, and the DMRS port corresponding to the nth antenna group is located in the nth CDM group.

It should be noted that, the N indication information corresponds to the N antenna groups one by one, the N antenna groups correspond to the N CDM groups one by one, and the above example only illustrates one correspondence, and the present application is not limited to a specific correspondence, as long as one by one correspondence is guaranteed, for example, the 1 st indication information may also indicate whether the DMRS port corresponding to the N antenna group or the CDM group corresponding to the N antenna group is occupied, where the DMRS port corresponding to the N antenna group is located in the 1 st CDM group; the 2 nd indication information indicates whether the DMRS port corresponding to the N-1 th antenna group or the CDM group corresponding to the N-1 th antenna group is occupied, the DMRS port corresponding to the N-1 th antenna group is located in the 2 nd CDM group, and so on, the N indication information indicates whether the DMRS port corresponding to the 1 st antenna group or the CDM group corresponding to the 1 st antenna group is occupied, and the DMRS port corresponding to the 1 st antenna group is located in the N th CDM group.

The CDM group corresponding to the antenna group may refer to a CDM group in which the DMRS port corresponding to the antenna group is located.

In one possible implementation manner, each piece of information further indicates the number of transmission layers corresponding to the corresponding antenna group, that is, each piece of information may further indicate the DMRS port corresponding to any antenna group in the plurality of antenna groups and the number of transmission layers corresponding to the antenna group.

Each piece of information can implicitly indicate the number of transmission layers corresponding to the corresponding antenna group, and can also display the number of transmission layers corresponding to the corresponding antenna group.

The number of DMRS ports corresponding to one antenna group is the same as the number of transmission layers corresponding to the antenna group.

In one possible implementation, each information may also indicate a number of symbols (number of front-load symbols) occupied by the pre-DMRS.

Next, an indication scheme of the number of CDM groups without data will be described in three cases.

In case one, a field value is introduced in the bit field of each indication information, which is used to indicate whether the CDM group corresponding to the corresponding antenna group is occupied.

In this case, some of the plurality of pieces of information indicate DMRS ports corresponding to the antenna groups, some of the pieces of information indicate whether CDM groups corresponding to the antenna groups are occupied, and for any one of the plurality of pieces of information, any one of the following may be indicated:

(1) DMRS ports corresponding to any antenna group among the plurality of antenna groups;

(2) The DMRS ports corresponding to any antenna group in the plurality of antenna groups and the symbol number occupied by the front-end DMRS;

(3) DMRS ports corresponding to any antenna group of the plurality of antenna groups and transmission layer numbers corresponding to the antenna groups;

(4) The DMRS ports corresponding to any antenna group of the plurality of antenna groups, the transmission layer number corresponding to the antenna group and the symbol number occupied by the front-end DMRS;

(5) Whether CDM corresponding to any antenna group in the plurality of antenna groups is occupied or not;

(6) Whether CDM corresponding to any antenna group in the plurality of antenna groups occupies the symbol number occupied by the pre-DMRS.

In case two, a set of field values is introduced in a bit field of certain indication information to represent the number of CDM groups without data.

In this case, the certain indication information may indicate any one of the following:

(1) The number of DMRS ports corresponding to any antenna group among the plurality of antenna groups and CDM groups without data;

(2) A DMRS port corresponding to any antenna group in the plurality of antenna groups, a transmission layer number corresponding to the antenna group and the number of CDM groups without data;

(3) The DMRS ports corresponding to any antenna group in the plurality of antenna groups, the number of symbols occupied by the prepositive DMRS and the number of CDM groups without data;

(4) The DMRS ports corresponding to any antenna group among the plurality of antenna groups, the number of transmission layers corresponding to the antenna group, the number of symbols occupied by the pre-DMRS, and the number of CDM groups without data.

Other indication information, that is, indication information other than the certain indication information among the plurality of indication information, may indicate any one of the following:

(2) The number of DMRS ports corresponding to any antenna group in the plurality of antenna groups is 0;

(3) DMRS ports corresponding to any antenna group in the plurality of antenna groups and transmission layer numbers corresponding to the antenna groups;

(4) The number of DMRS ports corresponding to any antenna group in the plurality of antenna groups and the number of transmission layers corresponding to the antenna group are 0;

(5) The DMRS ports corresponding to any antenna group in the plurality of antenna groups and the symbol number occupied by the front-end DMRS;

(6) The number of the DMRS ports corresponding to any antenna group in the plurality of antenna groups is 0, and the number of symbols occupied by the leading DMRS;

(7) A DMRS port corresponding to any antenna group in the plurality of antenna groups, a transmission layer number corresponding to the antenna group and a symbol number occupied by a front-end DMRS;

(8) The number of DMRS ports corresponding to any antenna group in the plurality of antenna groups and the number of transmission layers corresponding to the antenna group are 0 and the number of symbols occupied by the pre-DMRS.

In case three, one indication information is separately introduced to indicate the number of CDM groups without data, and the indication information may be referred to as first indication information.

In this case, the content indicated by any one of the plurality of pieces of information may be referred to the content indicated by the other indication information in the second case, which is not described herein.

For ease of understanding, the following description will be made specifically taking an example in which the number of indication information is 2 (the number of corresponding receiving antenna groups of the terminal device is 2), that is, the plurality of indication information includes the second indication information and the third indication information.

The second indication information may be used to indicate an identification of first information, where the first information is any information in the plurality of first information, the first information indicates a DMRS port corresponding to the first antenna group, and the DMRS port corresponding to the first antenna group is at least one DMRS port corresponding to the first CDM group.

The third indication information may be used to indicate an identification of second information, where the second information is any information in the plurality of second information, the second information indicates a DMRS port corresponding to the second antenna group, and the DMRS port corresponding to the second antenna group is at least one DMRS port corresponding to the second CDM group.

The first antenna group may be any one of two receiving antenna groups of the terminal device, and the second antenna group may be an antenna group other than the first antenna group among the two receiving antenna groups of the terminal device.

In one possible implementation, the first CDM group may be any CDM group in DMRS configuration type 1, and the second CDM group may be a CDM group other than the first CDM group in DMRS configuration type 1.

For example, the first CDM group may be CDM group 0 in DMRS configuration type 1, and the second CDM group may be CDM group 1 in DMRS configuration type 1.

In this example, the DMRS port corresponding to the first antenna group may be at least one of the DMRS ports corresponding to CDM group 0 in DMRS configuration type 1, and the DMRS port corresponding to the second antenna group may be at least one of the DMRS ports corresponding to CDM group 1 in DMRS configuration type 1.

For yet another example, the first CDM group may be CDM group 1 in DMRS configuration type 1, and the second CDM group may be CDM group 0 in DMRS configuration type 1.

In this example, the DMRS port corresponding to the first antenna group may be at least one of the DMRS ports corresponding to CDM group 1 in DMRS configuration type 1, and the DMRS port corresponding to the second antenna group may be at least one of the DMRS ports corresponding to CDM group 0 in DMRS configuration type 1.

In this implementation, the plurality of first information and the plurality of second information may be explained by the following three cases.

In the first case, part of information in the first information indicates a DMRS port corresponding to the first antenna group, part of information indicates whether a CDM group corresponding to the first antenna group is occupied, i.e., any one of the first information indicates whether the DMRS port corresponding to the first antenna group or the CDM group corresponding to the first antenna group is occupied; and part of the second information indicates the DMRS port corresponding to the second antenna group, part of the second information indicates whether the CDM group corresponding to the second antenna group is occupied, namely any one of the second information indicates whether the DMRS port corresponding to the second antenna group or the CDM group corresponding to the second antenna group is occupied.

The first plurality of information may be as shown in table 3 and the second plurality of information may be as shown in table 4.

Table 3 DMRS port index indication (1 ^st Antenna port(s) (1000+dmrs port), DMRS-type=1, maxlength=2) for the first Antenna group when DMRS configuration Type 1 is used

Wherein each of the second indication information may indicate a bit field value in table 3. "reserved but not" means that the corresponding CDM group of the first antenna group occupies, i.e., the corresponding time-frequency resource does not transmit data, and any DMRS ports in the CDM group are not used. "unreserved" means that the corresponding CDM group of the first antenna group is not occupied, i.e., the corresponding time-frequency resource can be used for transmitting data.

Table 4 DMRS port index indication for the second Antenna group when DMRS configuration Type 1 is used (2 ^nd Antenna port(s) (1000+dmrs port), DMRS-type=1, maxlength=2)

Bit field value	DMRS port	Symbol number occupied by pre-DMRS
			0	2	1
1	3	1
			2	2,3	1
3	2	2
			4	3	2
5	6	2
			6	7	2
7	2,3	2
			8	6,7	2
9	2,6	2
			10	2,3,6	2
11	2,3,6,7	2
			12	Remain but do not	1
13	Remain but do not	2
			14	Not remain	1
15	Not remain	2

Wherein each third indication information may indicate a bit field value in table 4. "reserved but not" means that the corresponding CDM group of the second antenna group occupies, i.e., the corresponding time-frequency resource does not transmit data, and any DMRS port in the CDM group is not used. "unreserved" means that the corresponding CDM group of the second antenna group is not occupied, i.e., the corresponding time-frequency resource can be used for transmitting data.

It should be noted that, table 3 and table 4 are only examples, table 3 may be a DMRS port index indication of the second antenna group when DMRS configuration type 1 is adopted, and table 4 may be a DMRS port index indication of the first antenna group when DMRS configuration type 1 is adopted; the DMRS port index indication when DMRS configuration type 1 is adopted may also be a part in table 3 or table 4; the table 3 or the part in the table 3 may be combined with the table 4, the table 3 or the part in the table 3 may be combined with other tables (for example, a conventional DMRS port index indication table) or contents, the table 3 or the part in the table 3 may be combined with other tables or contents, and the table 4 or the part in the table 4 may be combined with other tables or contents, so long as at least one of the table 3, the part in the table 4 or the part in the table 4 is the protection object of the present application, the specific form of the table 3 and the table 4 is not limited.

In the second case, any one of the plurality of first information indicates a DMRS port corresponding to the first antenna group and the number of CDM groups without data, and any one of the plurality of second information indicates a DMRS port corresponding to the second antenna group; or any one of the plurality of first information indicates a DMRS port corresponding to the first antenna group, and any one of the plurality of second information indicates a DMRS port corresponding to the second antenna group and the number of CDM groups without data.

The first plurality of information may be as shown in table 5 and the second plurality of information may be as shown in table 6.

Table 5 DMRS port index indication (1 ^st Antenna port(s) (1000+dmrs port), DMRS-type=1, maxlength=2) for the first Antenna group when DMRS configuration Type 1 is used

Bit field value	DMRS port	Symbol number occupied by pre-DMRS	Number of CDM groups without data
				0	0	1	1
1	1	1	1
				2	0,1	1	1
3	0	2	1
				4	1	2	1
5	4	2	1
				6	5	2	1
7	0,1	2	1
				8	4,5	2	1
9	0,4	2	1
				10	0,1,4	2	1
11	0,1,4,5	2	1
				12	Without any means for	1	1
13	Without any means for	2	1
				14	0	1	2
15	1	1	2
				16	0,1	1	2
17	0	2	2
				18	1	2	2
19	4	2	2
				20	5	2	2
21	0,1	2	2
				22	4,5	2	2
23	0,4	2	2
				24	0,1,4	2	2
25	0,1,4,5	2	2
				26	Without any means for	1	2
27	Without any means for	2	2

Wherein each of the second indication information may indicate a bit field value in table 5. "none" indicates that no DMRS port is indicated, i.e., the number of DMRS ports corresponding to the first antenna group is 0.

Table 6 DMRS port index indication for the second Antenna group when DMRS configuration Type 1 is employed (2 ^nd Antenna port(s) (1000+dmrs port), DMRS-type=1, maxlength=2)

Bit field value	DMRS port	Symbol number occupied by pre-DMRS
			0	2	1
1	3	1
			2	2,3	1
3	2	2
			4	3	2
5	6	2
			6	7	2
7	2,3	2
			8	6,7	2
9	2,6	2
			10	2,3,6	2
11	2,3,6,7	2
			12	Without any means for	1
13	Without any means for	2

Wherein each third indication information may indicate a bit field value in table 6. "none" indicates that no DMRS port is indicated, i.e., the number of DMRS ports corresponding to the second antenna group is 0.

The second indication information and the third indication information cannot indicate "none" at the same time. When the number of CDM groups without data in table 5 is 1, one of the second and third indicating information is required to indicate "none".

It should be noted that, table 5 and table 6 are only examples, table 5 may be a DMRS port index indication of the second antenna group when DMRS configuration type 1 is adopted, and table 6 may be a DMRS port index indication of the first antenna group when DMRS configuration type 1 is adopted; the DMRS port index indication when DMRS configuration type 1 is adopted may also be a part in table 5 or table 6; the table 5 or the part in the table 5 may be combined with the table 6, the table 5 or the part in the table 5 may be combined with other tables (for example, a conventional DMRS port index indication table) or contents, the table 5 or the part in the table 5 may be combined with other tables or contents, and the table 6 or the part in the table 6 may be combined with other tables or contents, so long as at least one of the table 5, the part in the table 6 or the part in the table 6 is the protection object of the present application, the specific form of the table 5 and the table 6 is not limited.

Thirdly, introducing first indication information to indicate the number of CDM groups without data, wherein second indication information indicates the DMRS ports corresponding to the first antenna group or the number of the DMRS ports corresponding to the first antenna group is 0; the third indication information indicates the DMRS ports corresponding to the second antenna group, or the number of DMRS ports corresponding to the first antenna group is 0.

The number of DMRS ports corresponding to the first antenna group is 0 when the number of DMRS ports corresponding to the second antenna group is different from the number of DMRS ports corresponding to the first antenna group.

The number of CDM groups without data may be as shown in table 7, the plurality of first information may be as shown in table 8, and the plurality of second information may be as shown in table 6.

TABLE 7 number of CDM groups without data

Wherein the first indication information may indicate a bit field value in table 7.

Table 8 DMRS port index indication (1 ^st Antenna port(s) (1000+dmrs port), DMRS-type=1, maxlength=2) for the first Antenna group when DMRS configuration Type 1 is employed

Bit field value	DMRS port	Symbol number occupied by pre-DMRS
			0	0	1
1	1	1
			2	0,1	1
3	0	2
			4	1	2
5	4	2
			6	5	2
7	0,1	2
			8	4,5	2
9	0,4	2
			10	0,1,4	2
11	0,1,4,5	2
			12	Without any means for	1
13	Without any means for	2

Wherein each second indication information may indicate a bit field value in table 8. "none" indicates that no DMRS port is indicated, i.e., the number of DMRS ports corresponding to the first antenna group is 0.

When the number of the CDM groups without data in table 7 is 1, the second indication information and the third indication information cannot simultaneously indicate "none"; when the number of CDM groups without data in table 7 is 2, neither the second indication information nor the third indication information can indicate "none".

It should be noted that, table 7, table 8 and table 6 are only examples, table 8 may be the DMRS port index indication of the second antenna group when the DMRS configuration type 1 is adopted, and table 6 may be the DMRS port index indication of the first antenna group when the DMRS configuration type 1 is adopted; the DMRS port index indication when DMRS configuration type 1 is adopted may also be a part in table 8 or table 6; the table 8 or the part in the table 8 may be combined with the table 6, the table 8 or the part in the table 8 may be combined with other tables (for example, the existing DMRS port index indication table) or contents, the table 8 or the part in the table 8 may be combined with other tables or contents, and the table 6 or the part in the table 6 may be combined with other tables or contents, so long as at least one of the table 8, the part in the table 6 or the part in the table 6 is the protection object of the present application, the specific form of the table 8 and the table 6 is not limited.

In one possible implementation, the first CDM group may be any CDM group in DMRS configuration type 2, and the second CDM group may be any CDM group in DMRS configuration type 2 other than the first CDM group.

For example, the first CDM group may be CDM group 0 in DMRS configuration type 2, and the second CDM group may be CDM group 1 or 2 in DMRS configuration type 2.

In this example, the DMRS port corresponding to the first antenna group may be at least one of the DMRS ports corresponding to CDM group 0 in DMRS configuration type 2; the DMRS port corresponding to the second antenna group may be at least one of the DMRS ports corresponding to CDM group 1 in DMRS configuration type 2, or the DMRS port corresponding to the second antenna group may be at least one of the DMRS ports corresponding to CDM group 2 in DMRS configuration type 2.

For yet another example, the first CDM group may be CDM group 1 in DMRS configuration type 2, and the second CDM group may be CDM group 0 or 2 in DMRS configuration type 2.

In this example, the DMRS port corresponding to the first antenna group may be at least one of the DMRS ports corresponding to CDM group 1 in DMRS configuration type 2; the DMRS port corresponding to the second antenna group may be at least one of the DMRS ports corresponding to CDM group 0 in DMRS configuration type 2, or the DMRS port corresponding to the second antenna group may be at least one of the DMRS ports corresponding to CDM group 2 in DMRS configuration type 2.

For yet another example, the first CDM group may be CDM group 2 in DMRS configuration type 2, and the second CDM group may be CDM group 0 or 1 in DMRS configuration type 2.

In this example, the DMRS port corresponding to the first antenna group may be at least one of the DMRS ports corresponding to CDM group 2 in DMRS configuration type 2; the DMRS port corresponding to the second antenna group may be at least one of the DMRS ports corresponding to CDM group 0 in DMRS configuration type 2, or the DMRS port corresponding to the second antenna group may be at least one of the DMRS ports corresponding to CDM group 1 in DMRS configuration type 2.

The plurality of first information and the plurality of second information may be respectively shown in any two of table 9, table 10, or table 11, for example, the plurality of first information may be shown in table 9, and the plurality of second information may be shown in table 10; or the first information may be as shown in table 9 and the second information may be as shown in table 11; or a plurality of first information as shown in table 10 and a plurality of second information as shown in table 9; or a plurality of first information as shown in table 10 and a plurality of second information as shown in table 11; or a plurality of first information as shown in table 11 and a plurality of second information as shown in table 9; or a plurality of first information as shown in table 11 and a plurality of second information as shown in table 10.

Table 9 DMRS port index indication (Antenna port(s) (1000+dmrs port), DMRS-type=1, maxlength=2) for Antenna group when DMRS configuration Type 2 is employed

Wherein each second indication information or each third indication information may indicate a bit field value in table 9. "reserved but not" means that the corresponding CDM group of antenna groups is occupied, i.e., the corresponding time-frequency resources do not transmit data, and any DMRS ports in the CDM group are not used. "unreserved" means that the corresponding CDM group of the antenna group is not occupied, i.e., the corresponding time-frequency resource can be used for transmitting data.

Table 10 DMRS port index indication (Antenna port(s) (1000+dmrs port), DMRS-type=1, maxlength=2) for Antenna group when DMRS configuration Type 2 is employed

Bit field value	DMRS port	Symbol number occupied by pre-DMRS
			0	2	1
1	3	1
			2	2,3	1
3	2	2
			4	3	2
5	8	2
			6	9	2
7	2,3	2
			8	8,9	2
9	2,8	2
			10	2,3,8	2
11	2,3,8,9	2
			12	Remain but do not	1
13	Remain but do not	2
			14	Not remain	1
15	Not remain	2

Wherein each second indication information or each third indication information may indicate a bit field value in the table 10. "reserved but not" means that the corresponding CDM group of antenna groups is occupied, i.e., the corresponding time-frequency resources do not transmit data, and any DMRS ports in the CDM group are not used. "unreserved" means that the corresponding CDM group of the antenna group is not occupied, i.e., the corresponding time-frequency resource can be used for transmitting data.

Table 11 DMRS port index indication (Antenna port(s) (1000+dmrs port), DMRS-type=1, maxlength=2) for Antenna group when DMRS configuration Type 2 is employed

It should be noted that, table 9, table 10 and table 11 are only examples, and the DMRS port index indication when DMRS configuration type 2 is adopted may be part of table 9, table 10 or table 11; tables 9, 10 and 11 may be combined, parts in table 9, 10 and 11 may be combined, the portions in table 9, table 10, and table 11 may be combined, and the portions in table 9, table 10, and table 11 may be combined; the combined table may be combined with other tables (for example, an existing DMRS port index indication table) or contents, the table 9 or a part of the table 9 may be combined with other tables or contents, the table 10 or a part of the table 10 may be combined with other tables or contents, and the table 11 or a part of the table 11 may be combined with other tables or contents, and the present application is not limited to the specific forms of the table 9, the table 10 and the table 11, as long as at least one of the table 9, the part of the table 9, the table 10, the part of the table 10, the table 11 or the part of the table 11 is the protection object of the present application.

In this case, whether the 3 rd CDM group is occupied or not may be predefined by a radio resource control (radio resource control, RRC) configuration or protocol, and the 3 rd CDM group refers to an antenna group other than the CDM group corresponding to the first antenna group and the CDM group corresponding to the second antenna group.

The first plurality of information may be as shown in table 12 and the second plurality of information may be as shown in table 13 or table 14; or the second information may be as shown in table 12 and the first information may be as shown in table 13 or table 14.

Table 12DMRS port index indication (Antenna port(s) (1000+dmrs port), DMRS-type=1, maxlength=2) for Antenna group when DMRS configuration Type 2

Wherein each second indication information or each third indication information may indicate a bit field value in table 12. "none" indicates that no DMRS port is indicated, i.e., the number of DMRS ports corresponding to the antenna group is 0.

Table 13 DMRS port index indication (Antenna port(s) (1000+dmrs port), DMRS-type=1, maxlength=2) for Antenna group when DMRS configuration Type 2 is employed

Bit field value	DMRS port	Symbol number occupied by pre-DMRS
			0	2	1
1	3	1
			2	2,3	1
3	2	2
			4	3	2
5	8	2
			6	9	2
7	2,3	2
			8	8,9	2
9	2,8	2
			10	2,3,8	2
11	2,3,8,9	2
			12	Without any means for	1
13	Without any means for	2

Wherein each second indication information or each third indication information may indicate a bit field value in table 13. "none" indicates that no DMRS port is indicated, i.e., the number of DMRS ports corresponding to the antenna group is 0.

Table 14 DMRS port index indication (Antenna port(s) (1000+dmrs port), DMRS-type=1, maxlength=2) for Antenna group when DMRS configuration Type 2 is employed

Bit field value	DMRS port	Symbol number occupied by pre-DMRS
			0	4	1
1	5	1
			2	4,5	1
3	4	2
			4	5	2
5	10	2
			6	11	2
7	4,5	2
			8	10,11	2
9	4,10	2
			10	4,5,10	2
11	4,5,10,11	2
			12	Without any means for	1
13	Without any means for	2

Wherein each second indication information or each third indication information may indicate a bit field value in table 14. "none" indicates that no DMRS port is indicated, i.e., the number of DMRS ports corresponding to the antenna group is 0.

The second indication information and the third indication information cannot indicate "none" at the same time. When the number of CDM groups without data in table 12 is 1, one of the second and third indicating information is required to indicate "none".

It should be noted that, table 12, table 13 and table 14 are only examples, and the DMRS port index indication when DMRS configuration type 2 is adopted may be part of table 12, table 13 and table 14; tables 12, 13 and 14 may be combined, parts in table 12, table 13 and table 14 may be combined, the portions in table 12, table 13, and table 14 may be combined, and the portions in table 12, table 13, and table 14 may be combined; the combined table may be combined with other tables (for example, an existing DMRS port index indication table) or contents, the table 12 or a part of the table 12 may be combined with other tables or contents, the table 13 or a part of the table 13 may be combined with other tables or contents, and the table 14 or a part of the table 14 may be combined with other tables or contents, and the present application is not limited to the specific form of the table 12, the table 13 and the table 14, as long as at least one of the table 12, the part of the table 12, the table 13, the part of the table 13, the table 14 or the part of the table 14 is the protection object of the present application.

The number of CDM groups without data may be as shown in table 7, and the plurality of first information and the plurality of second information may be as shown in any two of table 15, table 13, or table 14, respectively. For example, the plurality of first information may be as shown in table 15 and the plurality of second information may be as shown in table 13; or the first information may be as shown in table 15 and the second information may be as shown in table 14; or a plurality of first information as shown in table 13 and a plurality of second information as shown in table 15; or a plurality of first information as shown in table 13 and a plurality of second information as shown in table 14; or a plurality of first information as shown in table 14 and a plurality of second information as shown in table 15; or a plurality of first information as shown in table 14 and a plurality of second information as shown in table 13.

Table 15DMRS port index indication (Antenna port(s) (1000+dmrs port), DMRS-type=1, maxlength=2) for Antenna group when DMRS configuration Type 2

Wherein each second indication information or each third indication information may indicate a bit field value in table 15. "none" indicates that no DMRS port is indicated, i.e., the number of DMRS ports corresponding to the antenna group is 0.

It should be noted that, table 15, table 13 and table 14 are only examples, and the DMRS port index indication when DMRS configuration type 2 is adopted may be part of table 15, table 13 and table 14; table 15, table 13 and table 14 may be combined, parts in table 15, table 13 and table 14 may be combined, the portions in table 15, table 13, and table 14 may be combined, and the portions in table 15, table 13, and table 14 may be combined; the combined table may be combined with other tables (for example, an existing DMRS port index indication table) or contents, the table 15 or a part of the table 15 may be combined with other tables or contents, the table 13 or a part of the table 13 may be combined with other tables or contents, and the table 14 or a part of the table 14 may be combined with other tables or contents, and the present application is not limited to the specific form of the table 15, the table 13 and the table 14, as long as at least one of the table 15, the part of the table 15, the table 13, the part of the table 13, the table 14 or the part of the table 14 is the protection object of the present application.

S502, the network equipment sends a plurality of indication information to the terminal equipment.

In other words, the terminal device receives a plurality of indication information transmitted by the network device.

It should be noted that, in the embodiment of the present application, the functional modules of baseband processing of different antenna groups of the terminal device are different. I.e. the type of the receiver of the terminal device in the embodiment of the application is type 1.

The plurality of indication information may be carried in downlink control information (downlink control information, DCI), a Media Access Control (MAC) Control Element (CE) or an RRC message, which is not limited in the present application.

For example, if the plurality of indication information includes second indication information and third indication information, the second indication information may be carried in the first antenna port field of the DCI, and the third indication information may be carried in the second antenna port field of the DCI.

When the number of CDM groups without data is indicated using the indication scheme of case three in S501, S503 may also be performed.

S503, the network equipment sends first indication information to the terminal equipment.

In other words, the terminal device receives the first indication information sent by the network device.

The first indication information may be carried in DCI, MAC CE or RRC message, which is not limited in the present application.

After receiving the multiple indication information, the terminal device may determine a corresponding DMRS port on each antenna group based on the multiple indication information, and then receive, through the antenna group, the DMRS transmitted on the corresponding DMRS port.

In the embodiment shown in fig. 5, since the DMRS ports corresponding to each antenna group are located in the same CDM group and the DMRS ports corresponding to different antenna groups are located in different CDM groups, the influence of interference between the antenna groups on channel estimation can be reduced; in addition, the interference intensity caused by other antenna groups can be accurately estimated on each antenna group, so that interference among the antenna groups can be more effectively suppressed in MIMO equalization processing, and the performance is improved.

Fig. 6 is a schematic structural diagram of a communication device according to an embodiment of the present application. As shown in fig. 6, the communication apparatus 600 includes: a receiving module 601, configured to receive a plurality of indication information, where each indication information is used for indicating an identification of information, where the information is any information in the plurality of information, and the information indicates whether a DMRS port corresponding to any one of a plurality of antenna groups or a CDM group corresponding to the antenna group is occupied, the DMRS ports corresponding to the antenna groups are located in the same CDM group, and the DMRS ports corresponding to different antenna groups are located in different CDM groups; when the information indicates the DMRS port corresponding to the antenna group, the information further indicates the number of CDM groups without data, or receives first indication information indicating the number of CDM groups without data.

The communication device 600 provided in this embodiment is used to implement the technical solution of the terminal device in the foregoing method embodiment, and the implementation principle and technical effects are similar, and are not repeated herein.

Fig. 7 is a schematic structural diagram of another communication device according to an embodiment of the present application. As shown in fig. 7, the communication apparatus 700 includes: a determining module 701, configured to determine a plurality of indication information, where each indication information is used for indicating an identification of information, where the information is any information in the plurality of information, and the information indicates whether a DMRS port corresponding to any one of the plurality of antenna groups or a CDM group corresponding to the antenna group is occupied, the DMRS ports corresponding to the antenna group are located in the same CDM group, and the DMRS ports corresponding to different antenna groups are located in different CDM groups; a sending module 702, configured to send a plurality of indication information, where when the information indicates the DMRS port corresponding to the antenna group, the information further indicates the number of CDM groups without data, or send first indication information, where the first indication information is used to indicate the number of CDM groups without data.

The communication device 700 provided in this embodiment is configured to implement the technical solution of the network device in the foregoing method embodiment, and the implementation principle and the technical effects are similar, and are not repeated herein.

Fig. 8 is a schematic structural diagram of a terminal device according to an embodiment of the present application. As shown in fig. 8, the terminal device 800 includes: a processor 801 and a memory 802; memory 802 stores computer-executable instructions; the processor 801 executes the computer-executable instructions stored in the memory 802, so that the terminal device executes the corresponding technical scheme in the foregoing method embodiment, and the implementation principle and technical effects are similar, which are not described herein again.

Fig. 9 is a schematic structural diagram of a network device according to an embodiment of the present application. As shown in fig. 9, the network device 900 includes: a processor 901 and a memory 902; memory 902 stores computer-executable instructions; the processor 901 executes the computer-executed instructions stored in the memory 902, so that the network device executes the corresponding technical scheme in the foregoing method embodiment, and the implementation principle and technical effects are similar, which are not repeated herein.

The embodiment of the application provides a chip. The chip comprises a processor for invoking a computer program in a memory to perform the technical solutions in the above embodiments. The principle and technical effects of the present application are similar to those of the above-described related embodiments, and will not be described in detail herein.

The embodiment of the application also provides a computer readable storage medium, wherein the computer readable storage medium stores a computer program, and when the computer program is executed by a processor, the computer program realizes the steps of the method executed by the network device in the embodiment of the method.

The embodiment of the application also provides a computer readable storage medium, wherein the computer readable storage medium stores a computer program, and when the computer program is executed by a processor, the method steps executed by the terminal device in the foregoing method embodiment are implemented.

Embodiments of the present application provide a computer program product comprising a computer program which, when executed, causes a computer to perform the method steps performed by a network device as in the method embodiments described above.

An embodiment of the present application provides a computer program product comprising a computer program which, when executed, causes the computer to perform the method steps as performed by the terminal device in the foregoing method embodiment.

The embodiment of the application provides a chip or a chip system, which comprises at least one processor and a communication interface, wherein the communication interface and the at least one processor are interconnected through a line, and the at least one processor is used for running a computer program or instructions to execute method steps executed by a terminal device or method steps executed by a network device in the embodiment of the method. The communication interface in the chip can be an input/output interface, a pin, a circuit or the like.

The methods described in the above embodiments may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. If implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer readable media can include computer storage media and communication media and can include any medium that can transfer a computer program from one place to another. The storage media may be any target media that is accessible by a computer.

In one possible implementation, the computer readable medium may include RAM, ROM, a compact disk-read only memory (CD-ROM) or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium targeted for carrying or storing the desired program code in the form of instructions or data structures and accessible by a computer. Also, any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (digital subscriber line, DSL), or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of medium. Disk and disc, as used herein, includes optical disc, laser disc, optical disc, digital versatile disc (DIGITAL VERSATILEDISC, DVD), floppy disk and blu-ray disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.

Embodiments of the present application are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) of embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processing unit of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processing unit of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

The foregoing detailed description of the invention has been presented for purposes of illustration and description, and it should be understood that the foregoing is by way of illustration and description only, and is not intended to limit the scope of the invention.

Claims

1. A method of communication, comprising:

Receiving a plurality of indication information, wherein the indication information is used for indicating the identification of information, the information is any information in the plurality of information, the information indicates whether demodulation reference signal (DMRS) ports corresponding to any antenna group in a plurality of antenna groups or Code Division Multiplexing (CDM) groups corresponding to the antenna groups are occupied, the DMRS ports corresponding to the antenna groups are positioned in the same CDM group, and the DMRS ports corresponding to different antenna groups are positioned in different CDM groups;

When the information indicates the DMRS port corresponding to the antenna group, the information further indicates the number of CDM groups without data, or receives first indication information, where the first indication information is used to indicate the number of CDM groups without data.

2. The method of claim 1, wherein the information further indicates a number of transmission layers corresponding to the antenna group.

3. The method of claim 2, wherein the number of transmission layers for the antenna group is the same as the number of DMRS ports for the antenna group.

4. A method according to any of claims 1-3, characterized in that the information also indicates the number of symbols occupied by the pre-DMRS.

5. The method of claim 1, wherein the functional blocks of baseband processing for different antenna groups are different.

6. The method of any one of claims 1-5, wherein the plurality of indication information includes second indication information for indicating an identification of the first information and third indication information for indicating an identification of the second information, wherein,

The first information is any information in a plurality of first information, the first information indicates a DMRS port corresponding to a first antenna group, and the DMRS port corresponding to the first antenna group is at least one DMRS port corresponding to a first CDM group;

The second information is any information in a plurality of second information, the second information indicates DMRS ports corresponding to the second antenna group, and the DMRS ports corresponding to the second antenna group are at least one DMRS port corresponding to the second CDM group.

7. The method of claim 6, wherein the step of providing the first layer comprises,

The first CDM group is any CDM group in the DMRS configuration type 1;

The second CDM group is a CDM group other than the first CDM group in DMRS configuration type 1.

8. The method of claim 6, wherein the step of providing the first layer comprises,

The first CDM group is any CDM group in the DMRS configuration type 2;

The second CDM group is any CDM group other than the first CDM group in DMRS configuration type 2.

9. The method according to claim 1, wherein the plurality of indication information is carried in downlink control information, DCI, a medium access control, MAC, control element, CE, or a radio resource control, RRC, message.

10. The method of claim 1, wherein the first indication information is carried in a DCI, MAC CE or RRC message.

11. The method of claim 1, wherein the plurality of antenna groups are receive antenna groups of a terminal device.

12. A method of communication, comprising:

Determining a plurality of indication information, wherein the indication information is used for indicating the identification of information, the information is any information in the plurality of information, the information indicates whether demodulation reference signal (DMRS) ports corresponding to any antenna group in a plurality of antenna groups or Code Division Multiplexing (CDM) groups corresponding to the antenna groups are occupied, the DMRS ports corresponding to the antenna groups are positioned in the same CDM group, and the DMRS ports corresponding to different antenna groups are positioned in different CDM groups;

And transmitting the plurality of indication information, wherein when the information indicates the DMRS ports corresponding to the antenna groups, the information also indicates the number of CDM groups without data, or transmitting first indication information, wherein the first indication information is used for indicating the number of CDM groups without data.

13. The method of claim 12, wherein the information further indicates a number of transmission layers corresponding to the antenna group.

14. The method of claim 13, wherein the number of transmission layers for the antenna group is the same as the number of DMRS ports for the antenna group.

15. The method of any of claims 12-14, wherein the information further indicates a number of symbols occupied by a pre-DMRS.

16. The method of claim 12, wherein the functional blocks of baseband processing for different antenna groups are different.

17. The method of any one of claims 12-16, wherein the plurality of indication information includes second indication information for indicating an identification of the first information and third indication information for indicating an identification of the second information, wherein,

18. The method of claim 17, wherein the step of determining the position of the probe is performed,

The first CDM group is any CDM group in the DMRS configuration type 1;

19. The method of claim 17, wherein the step of determining the position of the probe is performed,

The first CDM group is any CDM group in the DMRS configuration type 2;

20. The method according to claim 17, wherein the plurality of indication information is carried in downlink control information, DCI, a medium access control, MAC, control element, CE, or a radio resource control, RRC, message.

21. The method of claim 12, wherein the first indication information is carried in a DCI, MAC CE or RRC message.

22. The method of claim 12, wherein the plurality of antenna groups are receive antenna groups of a terminal device.

23. A terminal device, comprising: a processor and a memory;

the memory stores computer-executable instructions;

The processor executing computer-executable instructions stored in the memory to cause the terminal device to perform the method of any one of claims 1-11.

24. A network device, comprising: a processor and a memory;

the memory stores computer-executable instructions;

The processor executing computer-executable instructions stored in the memory to cause the network device to perform the method of any one of claims 12-22.

25. A computer readable storage medium storing a computer program, which when executed by a processor implements the method of any one of claims 1-11 or the method of any one of claims 12-22.

26. A system on a chip comprising at least one processor and a communication interface, the communication interface and the at least one processor being interconnected by a wire, the at least one processor being configured to execute a computer program or instructions to perform the method of any one of claims 1-11 or the method of any one of claims 12-22.

27. A computer program product comprising a computer program which, when run, causes a computer to perform the method of any one of claims 1-11 or the method of any one of claims 12-22.