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WO2019029553A1 - 控制信息的发送方法、接收方法、基站及终端 - Google Patents

控制信息的发送方法、接收方法、基站及终端 Download PDF

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Publication number
WO2019029553A1
WO2019029553A1 PCT/CN2018/099319 CN2018099319W WO2019029553A1 WO 2019029553 A1 WO2019029553 A1 WO 2019029553A1 CN 2018099319 W CN2018099319 W CN 2018099319W WO 2019029553 A1 WO2019029553 A1 WO 2019029553A1
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WIPO (PCT)
Prior art keywords
index
transmission
terminal
transmission point
preset
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Application number
PCT/CN2018/099319
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English (en)
French (fr)
Inventor
郭保娟
苏昕
Original Assignee
电信科学技术研究院有限公司
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Application filed by 电信科学技术研究院有限公司 filed Critical 电信科学技术研究院有限公司
Priority to US16/637,957 priority Critical patent/US11431465B2/en
Priority to EP21206712.8A priority patent/EP3972185A1/en
Priority to EP18843014.4A priority patent/EP3667979B1/en
Publication of WO2019029553A1 publication Critical patent/WO2019029553A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/02—Channels characterised by the type of signal
    • H04L5/06—Channels characterised by the type of signal the signals being represented by different frequencies
    • H04L5/10—Channels characterised by the type of signal the signals being represented by different frequencies with dynamo-electric generation of carriers; with mechanical filters or demodulators
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • the present disclosure relates to the field of communications technologies, and in particular, to a method for transmitting control information, a method for receiving control information, a base station, and a terminal.
  • DMRS Demodulation Reference Signal
  • the number of DMRS symbols is 1: Comb2+CS2 is used, and the maximum support is 4 ports.
  • FIG. 1 supports up to four antenna ports (Antenna Port); wherein comb2 is frequency domain multiplexing, for example, the multiplexing relationship between ports 0 and 2 is comb2.
  • CS2 uses a cyclic shift mode (Cyclic Shifts) for multiplexing between ports.
  • Cyclic Shifts Cyclic Shifts
  • the number of DMRS symbols is 2: Comb2+CS2+TD-OCC ⁇ (1,1)) and (1,-1) ⁇ are used, and the maximum support is 8 ports.
  • FIG. 2 supports up to 8 antenna ports;
  • TD-OCC is Orthogonal Cover Code (OCC) multiplexing, such as time domain OCC multiplexing between ports 0/1 and 4/5. .
  • OCC Orthogonal Cover Code
  • the number of DMRS symbols is 1: 2-FD-OCC ⁇ frequency domain orthogonal code of adjacent resource unit (RE) ⁇ , and the maximum support is 6 ports.
  • FIG. 3 supports up to six antenna ports; wherein 2-FD-OCC is frequency domain OCC multiplexing, for example, between ports 0 and 1 is frequency domain OCC multiplexing.
  • Frequency Division Multiplexing is adopted between the ports and other ports.
  • FDM Frequency Division Multiplexing
  • the number of DMRS symbols is 2: 2-FD-OCC (adjacent frequency domain RE) + TD-OCC ( ⁇ 1 1 ⁇ and ⁇ 1-1 ⁇ ) is adopted, and the maximum support is 12 ports.
  • FIG. 4 supports up to 12 antenna ports, and TD-OCC is time domain OCC multiplexing, such as time domain OCC multiplexing between ports 0/1 and 6/7.
  • the maximum number of supported ports does not exceed 6, it can be configured with the mode of FIG. 3. If it exceeds 6, but does not exceed 12, it can be configured with the mode of FIG.
  • the number of ports here refers to the sum of the ports of all users multiplexed at the resource location.
  • TRPs Transmission Points
  • each UE may simultaneously transmit a physical downlink shared channel at multiple transmission points ( Physical Downlink Shared Channel (PDSCH); multiple transmission points can transmit one PDSCH at the same time, or one PDSCH can be transmitted for each transmission point.
  • PDSCH Physical Downlink Shared Channel
  • multiple transmission points simultaneously transmit one PDSCH how to indicate the DMRS configuration information of the PDSCH through the DCI information, there is no solution in the related art.
  • the present disclosure provides a method for transmitting control information, a receiving method, a base station, and a terminal, to solve the problem of how to transmit one PDSCH simultaneously by multiple transmission points, and how to indicate DMRS configuration information of the PDSCH through DCI information.
  • some embodiments of the present disclosure provide a method of transmitting control information applied to a base station.
  • the method includes: obtaining an index of configuration information of a demodulation reference signal DMRS of the physical downlink shared channel in a preset DMRS configuration table; and transmitting the index to the terminal by using downlink control information.
  • the step of acquiring the index of the configuration information of the demodulation reference signal DMRS of the physical downlink shared channel in the preset DMRS configuration table includes: obtaining the matching terminal from the preset DMRS configuration table.
  • the step of obtaining the index corresponding to the configuration information that meets the configuration condition of the terminal from the preset DMRS configuration table includes: obtaining, from the preset DMRS configuration table, the current The index corresponding to the configuration information matched by each transmission point of the supported single-point transmission; wherein the total number of ports included in each of the configuration information does not exceed the number of ports supported by the transmission point corresponding to the configuration information.
  • the step of transmitting the index to the terminal by using the downlink control information includes: sending, by using the downlink control information, an index corresponding to the configuration information corresponding to each transmission point currently supported by the terminal Give the terminal.
  • the step of obtaining an index corresponding to the configuration information that meets the configuration condition of the terminal from the preset DMRS configuration table includes: obtaining, from the preset DMRS configuration table, the included multiple An index corresponding to the configuration information that the number of transmission points of the point transmission matches the number of transmission points of the terminal, and the total number of ports does not exceed the total number of ports supported by the terminal.
  • the DMRS configuration table further includes: a port number and a port number allocated for each transmission point; wherein any two port numbers of the port numbers of different transmission points are non-code division multiplexing and Non-time domain orthogonal code.
  • the step of transmitting the index to the terminal by using the downlink control information includes: using the downlink control information, the index, and a transmission point type used to indicate a transmission point corresponding to the index.
  • the indication information is sent to the terminal; the transmission point type is single point transmission or multi-point transmission.
  • the index includes a primary index and a secondary index corresponding to the primary index;
  • the primary index is an index associated with a total number of ports in the DMRS configuration table;
  • the secondary index is an index associated with the port number in the DMRS configuration table.
  • the step of transmitting the index to the terminal by using the downlink control information includes: encapsulating the index in a preset field of downlink control information, and using the downlink control information, The index is sent to the terminal; or, in the downlink control information, a preset field is added to the index, and the index is sent to the terminal by using the downlink control information.
  • the step of sending the index to the terminal by using the downlink control information includes: encapsulating the index in a preset character format in a preset field of the downlink control information, and adopting the downlink control Information, the index is sent to the terminal.
  • some embodiments of the present disclosure further provide a method for receiving control information, which is applied to a terminal, and includes: acquiring configuration information of a demodulation reference signal DMRS of a physical downlink shared channel carried in downlink control information. An index in the DMRS configuration table; searching for configuration information indicated by the index in the DMRS configuration table.
  • the step of searching for the configuration information indicated by the index in the DMRS configuration table includes: determining a transmission point type of a transmission point corresponding to the index, where the transmission point type includes a single point Transmission and multipoint transmission; from the preset DMRS configuration table, searching for the configuration information indicated by the index under the transmission point type of the corresponding transmission point of the index.
  • the step of searching for the configuration information indicated by the index under the transmission point type of the transmission point corresponding to the index from the preset DMRS configuration table includes: when When the transmission point type of the index is single-point transmission, from the preset DMRS configuration table, the number of ports corresponding to the transmission point of the single-point transmission indicated by each index is found under the type of single-point transmission and The port number.
  • the step of searching for the configuration information indicated by the index under the transmission point type of the transmission point corresponding to the index from the preset DMRS configuration table includes: when When the transmission point type is multi-point transmission, from the preset DMRS configuration table, under the type of finding multi-point transmission, the number of transmission points of the multi-point transmission indicated by the index, and the port supported by each transmission point number.
  • the step of determining a transmission point type of a transmission point corresponding to the index includes: according to a transmission point type carried in the downlink indication information, indicating a transmission point corresponding to the index And indicating, by the indication information, a transmission point type of the transmission point corresponding to the index; or determining a transmission point type of the transmission point corresponding to the index according to the quasi-common base station information carried in the downlink indication information.
  • the DMRS configuration table further includes: a port number and a port number allocated for each transmission point; wherein any two port numbers of the port numbers of different transmission points are non-code division multiplexing and Non-time domain orthogonal code.
  • the index includes a primary index and a secondary index corresponding to the primary index;
  • the primary index is an index associated with a total number of ports in the DMRS configuration table;
  • the secondary index is an index associated with the port number in the DMRS configuration table.
  • the method for searching for the configuration information indicated by the index in the DMRS configuration table includes: searching for a secondary index corresponding to the primary index in the DMRS configuration table; The configuration information indicated by the secondary index in the DMRS configuration table.
  • the step of acquiring the index of the configuration information of the demodulation reference signal DMRS of the physical downlink shared channel carried in the downlink control information in the preset DMRS configuration table includes: presetting the downlink control information In the field, the index of the configuration information of the demodulation reference signal DMRS of the physical downlink shared channel is obtained in a preset DMRS configuration table; or, in the downlink control information, the byte added with the preset field is obtained, where the added The byte of the preset field is an index of the configuration information of the demodulation reference signal DMRS of the physical downlink shared channel in the preset DMRS configuration table.
  • the step of acquiring the index of the configuration information of the demodulation reference signal DMRS of the physical downlink shared channel carried in the downlink control information in the preset DMRS configuration table includes: presetting the downlink control information a field that obtains a preset character format field, where the preset character format field is an index of a configuration information of a demodulation reference signal DMRS of the physical downlink shared channel in a preset DMRS configuration table.
  • some embodiments of the present disclosure further provide a base station, including: an index obtaining module, configured to acquire an index of a configuration information of a demodulation reference signal DMRS of a physical downlink shared channel in a preset DMRS configuration table; And an index sending module, configured to send the index to the terminal by using downlink control information.
  • the index obtaining module includes: an obtaining sub-module, configured to obtain, from the preset DMRS configuration table, an index corresponding to configuration information that meets a configuration condition of the terminal; the configuration information includes a total port.
  • the number and the total port number; the configuration conditions include the number of transmission points currently supported by the terminal and the number of ports supported by each transmission point.
  • the acquiring sub-module includes: a single transmission point acquiring unit, configured to acquire, from the preset DMRS configuration table, a configuration that matches each transmission point of the single-point transmission currently supported by the terminal. An index corresponding to the information; wherein, the total number of ports included in each of the configuration information does not exceed the number of ports supported by the transmission point corresponding to the configuration information.
  • the index sending module includes: a first sending submodule, configured to send, by using the downlink control information, an index corresponding to the configuration information corresponding to each transmission point currently supported by the terminal to the terminal.
  • the acquiring sub-module includes: a multi-transmission point acquiring unit, configured to acquire, from the preset DMRS configuration table, the number of transmission points included in the multi-point transmission and the number of transmission points of the terminal An index corresponding to the configuration information that matches, and the total number of ports does not exceed the total number of ports supported by the terminal.
  • the DMRS configuration table further includes: a port number and a port number allocated for each transmission point; wherein any two port numbers of the port numbers of different transmission points are non-code division multiplexing and Non-time domain orthogonal code.
  • the index sending module includes: a second sending submodule, configured to send, by using downlink control information, the index and indication information of a transmission point type used to indicate a transmission point corresponding to the index to Terminal; the transmission point type is single point transmission or multipoint transmission.
  • the index includes a primary index and a secondary index corresponding to the primary index;
  • the primary index is an index associated with a total number of ports in the DMRS configuration table;
  • the secondary index is an index associated with the port number in the DMRS configuration table.
  • the index sending module includes: a third sending submodule, configured to encapsulate the index in a preset field of downlink control information, and send the index to the terminal by using the downlink control information Or, in the downlink control information, a preset field is added to the index, and the index is sent to the terminal by using the downlink control information.
  • the index sending module includes: a fourth sending sub-module, configured to encapsulate the index in a preset character format in a preset field of downlink control information, and use the downlink control information to The index is sent to the terminal.
  • some embodiments of the present disclosure further provide a terminal, including: an acquiring module, configured to acquire configuration information of a demodulation reference signal DMRS of a physical downlink shared channel carried in downlink control information in a preset DMRS configuration. An index in the table; and a lookup module for searching for configuration information indicated by the index in the DMRS configuration table.
  • an acquiring module configured to acquire configuration information of a demodulation reference signal DMRS of a physical downlink shared channel carried in downlink control information in a preset DMRS configuration.
  • An index in the table An index in the table
  • a lookup module for searching for configuration information indicated by the index in the DMRS configuration table.
  • the searching module includes: a type determining submodule, configured to determine a transmission point type of a transmission point corresponding to the index, where the transmission point type includes single point transmission and multipoint transmission; and information searching And a submodule, configured to search, from the preset DMRS configuration table, configuration information indicated by the index under a transmission point type of the corresponding transmission point of the index.
  • the information search sub-module includes: a single transmission point searching unit, configured to: when the transmission point type of the index is single-point transmission, look for a single point from the preset DMRS configuration table. The number of ports and the port number corresponding to the transmission point of the single-point transmission indicated by each index in the type of transmission.
  • the information search sub-module includes: a multiple transmission point searching unit, configured to search for a multi-point transmission from the preset DMRS configuration table when the transmission point type is multi-point transmission. Type, the number of transmission points of the multipoint transmission indicated by the index, and the number of ports supported by each transmission point.
  • the type determining sub-module includes: a first determining unit, configured to determine, according to the indication information of the transmission point type that is used to indicate the transmission point corresponding to the index, in the downlink indication information, The transmission point type of the transmission point corresponding to the index; or the second determining unit, configured to determine, according to the quasi-common base station information carried in the downlink indication information, a transmission point type of the transmission point corresponding to the index.
  • the DMRS configuration table further includes: a port number and a port number allocated for each transmission point; wherein any two port numbers of the port numbers of different transmission points are non-code division multiplexing and Non-time domain orthogonal code.
  • the index includes a primary index and a secondary index corresponding to the primary index;
  • the primary index is an index associated with a total number of ports in the DMRS configuration table;
  • the secondary index is an index associated with the port number in the DMRS configuration table.
  • the searching module includes: an index search sub-module, configured to search for a secondary index corresponding to the first-level index in the DMRS configuration table; and searching for the second-level index in the DMRS configuration table.
  • the configuration information indicated by the index is indicated by the index.
  • the acquiring module includes: a first acquiring submodule, configured to acquire, in a preset field of the downlink control information, configuration information of the demodulation reference signal DMRS of the physical downlink shared channel in a preset DMRS configuration. An index of the table; or a second obtaining submodule, configured to: in the downlink control information, obtain a byte added with a preset field, where the byte added with the preset field is a demodulation reference of the physical downlink shared channel The index of the configuration information of the signal DMRS in the preset DMRS configuration table.
  • the acquiring module includes: a third acquiring sub-module, configured to acquire a preset character format field in a preset field of the downlink control information, where the preset character format field is a physical downlink The index of the configuration information of the demodulation reference signal DMRS of the shared channel in the preset DMRS configuration table.
  • some embodiments of the present disclosure further provide a base station, including a first memory, a first processor, and a computer program stored on the first memory and executable on the first processor; When the first processor executes the program, the following steps are performed: acquiring an index of configuration information of a demodulation reference signal DMRS of a physical downlink shared channel in a preset DMRS configuration table; and using the downlink control information, the index Send to the terminal.
  • a base station including a first memory, a first processor, and a computer program stored on the first memory and executable on the first processor; When the first processor executes the program, the following steps are performed: acquiring an index of configuration information of a demodulation reference signal DMRS of a physical downlink shared channel in a preset DMRS configuration table; and using the downlink control information, the index Send to the terminal.
  • some embodiments of the present disclosure further provide a computer readable storage medium having stored thereon a computer program, the program being executed by the processor to perform the following steps: acquiring a demodulation reference signal DMRS of a physical downlink shared channel The index of the configuration information in the preset DMRS configuration table; and the index is sent to the terminal by using downlink control information.
  • some embodiments of the present disclosure further provide a terminal, including a second memory, a second processor, and a computer program stored on the second memory and executable on the second processor;
  • the second processor executes the program, the following steps are performed: acquiring an index of the configuration information of the demodulation reference signal DMRS of the physical downlink shared channel carried in the downlink control information in a preset DMRS configuration table; and searching for the DMRS configuration The configuration information indicated by the index in the table.
  • some embodiments of the present disclosure further provide a computer readable storage medium, where the computer program is stored, and when the program is executed by the processor, the following steps are performed: acquiring a physical downlink shared channel carried in the downlink control information The index of the demodulation reference signal DMRS configuration information in the preset DMRS configuration table; and the configuration information indicated by the index in the DMRS configuration table.
  • the index is configured for the DMRS configuration information of the transmission point of the multipoint transmission, and the index is sent to the terminal by using the downlink control information, so that the DCI information indicates the DMRS configuration information of the PDSCH, and the terminal can configure the DMRS according to the index.
  • the multiple transmission points are used to transmit one physical downlink shared channel; and the signaling overhead is saved by means of indexing; the disclosure solves the problem that multiple transmission points simultaneously transmit one PDSCH, and how to indicate the DCI information through the DCI information The problem of PDSCH DMRS configuration information.
  • FIG. 5 is a flowchart showing a method of transmitting control information on a base station side according to some embodiments of the present disclosure
  • FIG. 6 is a flowchart showing a method of receiving control information on a terminal side according to some embodiments of the present disclosure
  • Figure 7 is a block diagram showing a base station of some embodiments of the present disclosure.
  • Figure 8 is a block diagram showing a terminal of some embodiments of the present disclosure.
  • Figure 9 is a block diagram showing the structure of a base station of some embodiments of the present disclosure.
  • Figure 10 is a block diagram showing the structure of a terminal of some embodiments of the present disclosure.
  • system and “network” are used interchangeably herein.
  • B corresponding to A means that B is associated with A, and B can be determined from A.
  • determining B from A does not mean that B is only determined based on A, and that B can also be determined based on A and/or other information.
  • the present disclosure provides a method for transmitting control information, a method for receiving control information, a base station, and a terminal, to solve the problem of how to transmit one PDSCH simultaneously by multiple transmission points, and how to indicate DMRS configuration information of the PDSCH through DCI information.
  • some embodiments of the present disclosure provide a method for transmitting control information, which is applied to a base station, and the method includes steps 51-52.
  • Step 51 Acquire an index of the configuration information of the demodulation reference signal DMRS of the physical downlink shared channel in a preset DMRS configuration table.
  • the physical downlink shared channel (DSCH) is used to carry downlink service data, paging messages, and the like.
  • DSCH physical downlink shared channel
  • different ports of the PDSCH may be transmitted at each transmission point, and finally unified demodulation as one scheduling of the terminal. Therefore, the DMRS configuration information needs to be used to notify the terminal of the total port allocation of multiple transmission points, and which ports are allocated to each transmission point, and indicate the DMRS configuration information of the PDSCH by using Downlink Control Information (DCI).
  • DCI Downlink Control Information
  • the preset DMRS configuration table has multiple pieces of configuration information, where the configuration information includes the number of ports corresponding to the transmission point and the port number; and in the DMRS configuration table, there are separate associations for each The index of the configuration information, that is, the one-to-one index corresponding to each configuration information, so that the base station sends the index included in the configuration information of the DMRS to the terminal when the DCI is delivered, so as to save byte overhead.
  • the step 51 includes: obtaining, from the preset DMRS configuration table, an index corresponding to the configuration information that meets the configuration condition of the terminal; the configuration information includes a total port number and a total port number; the configuration condition includes the The number of transmission points currently supported by the terminal and the number of ports supported by each transmission point.
  • the base station knows (or acquires) the number of transmission points currently supported by the terminal and the number of ports supported by each transmission point, determines the configuration conditions of the terminal, and obtains the DMRS configuration table.
  • Step 52 Send the index to the terminal by using downlink control information.
  • the identifier is carried in the downlink control information, and the index is sent to the terminal by using the downlink control information.
  • the obtaining an index corresponding to the configuration information that meets the configuration condition of the terminal from the preset DMRS configuration table may be performed in the following two manners:
  • step 51 includes:
  • the N TRPs are respectively configured as a single transmission point (single TRP), which are respectively configured according to the DMRS configuration information of the single TRP; and the configuration information of the type of the single transmission point is obtained from the preset DMRS configuration table, and the terminal
  • the index corresponding to the configuration information that the currently supported transmission point matches; for example, if the terminal supports two transmission points, the index of the configuration information respectively matching the two transmission points is obtained from the DMRS configuration table, respectively;
  • the transmission point, the total number of ports included in the configuration information matching the transmission point, does not exceed the number of ports supported by the transmission point.
  • MU-MIMO multi-user multiple-input multiple-output
  • SU-MIMO SU-MIMO users whose number of ports does not exceed one CDM group or CDM+TD-OCC group
  • Allocating ports internally saves pilot resources for the user and reduces interference for users.
  • the first column of the left number is an index corresponding to a single transmission point
  • the second column to the third column are configuration information
  • the fourth column is an identifier of a pilot pattern in the background technology corresponding to the configuration information.
  • the identification number is 1, corresponding to the pilot map in Figure 1;
  • the configuration number is 2
  • the corresponding pilot map Figure 2 port indicates the port number; for the transmission point using single-point transmission, such as index 18, the total port The number is 4, the port number is 0 to 3; for example, when the index is 13, the total number of ports is 2, and the port numbers are 6 and 7.
  • the step of sending the index to the terminal by using the downlink control information includes:
  • the index corresponding to the configuration information corresponding to each transmission point currently supported by the terminal is sent to the terminal by using the downlink control information.
  • step 51 includes:
  • the number of transmission points of the multi-point transmission included in the configuration information is matched with the number of transmission points of the terminal, and the total number of ports does not exceed the terminal number.
  • the total number of supported ports that is, the number of transmission points of the multipoint transmission included in the configuration information is the same as the number of transmission points supported by the terminal for multipoint transmission, and the total number of ports included in the configuration information does not exceed that supported by the terminal. The total number of ports.
  • Table 2 illustrates a multipoint transmission of configurable configuration information
  • the N TRPs use the unified DMRS configuration signaling to jointly configure the DMRS configuration port information of the UE on all TRPs.
  • the DMRS configuration table in Table 2 can be in the form of multi-transport point (multi TRP) and single TRP unified table.
  • the first column (from the left) is the multi-transport point index, and the second column is the single transmission point index; according to the DCI information.
  • the Quasi-Common Site (QCL) of multiple transmission points carried the QCL information may be information of DMRS and CSIRS quasi-co-sites, or other information that can identify multi-TRP and single-TRP, and can know the current UE Whether the scheduling is single TRP or multi TRP, and the DMRS configuration index (index) can be parsed.
  • the total number of ports and port number information is determined by Table 2. If the current schedule is single TRP, the table information is read according to the index of the second column; if the current schedule is multi TRP, the table information is read according to the index of the first column.
  • the obtained DMRS is configured with index+difference, and then the total number of ports and port information in the table are read according to multiple transmission point indexes.
  • the difference can be determined based on the relationship between multiple transmission point indices in the table and a single transmission point index.
  • the read DMRS configuration information is: 3, port 1-3; if the current subframe scheduling user is in the form of single TRP, the read The DMRS configuration information is: 1, port5.
  • the DMRS configuration table further includes: a port number and a port number allocated for each transmission point; wherein any two port numbers of different transmission point port numbers are non-code division multiplexing And non-time domain orthogonal codes.
  • the port number and the number of ports allocated to each transmission point can also be given, and at the same time, which ports and the number of ports are allocated for each transmission point, that is, the DMRS port of each transmission point is obtained. group.
  • the DMRS port group assigned to each transmission point can be given separately, and all possible port combinations of each transmission point are given, and the corresponding index is notified to the terminal.
  • the DMRS configuration index is 8
  • the allocated DMRS is 4 layers
  • the ports 0-3, the DMRS port groups of the two transmission points to be notified are ⁇ 0, 1 ⁇ and ⁇ 2,3 ⁇ .
  • the port group can be numbered, the number index can be notified to the terminal, or the port number list can be directly notified to the terminal.
  • any two port numbers of different transmission point port numbers are non-code division multiplexed and non-time domain orthogonal codes; that is, ports allocated by the terminal to different transmission points of one PDSCH.
  • CDM Code Division Multiplexing
  • OCC Orthogonal Cover Code
  • the ports of the same user's frequency domain CDM cannot be assigned to different transmission points, and the ports of the TD-OCC can also be assigned to different transmission points.
  • the ports that fill the same content (such as 0 and 1 in Figure 1, the same padding in the figure), if configured to the same user, can not be assigned to different transmission points, and can only be transmitted on one transmission point. Then if the N transmission points adopt a unified DMRS configuration table, it needs to be given based on the above principles.
  • the index is 10
  • the total number of ports of the transmission point is 6, and the total port number is 0 to 5; wherein the port number assigned by transmission point 1 is DMRS port group 1, ie 0 to 1 4 to 5; the port number assigned to transmission point 2 is DMRS port group 2, that is, 2 to 3; the number of ports (DMRS port groups 1, 2) are 4 and 2.
  • Manner 3 multiple transmission points use unified DMRS configuration signaling to jointly configure the DMRS configuration port information of the UE on all TRPs;
  • the DMRS configuration table can be in the form of multi TRP and single TRP independent tables.
  • the table below is shown in Table 4. See Table 1 above for a single TRP independent form.
  • the current scheduling of the UE is a single TRP or a multi TRP, and the DMRS configuration index can be parsed at the same time. If the index is X, then the total number of ports configured for the user and the port index information are determined by Table 1 and Table 4, respectively. Assume that the current scheduling of the UE is a single TRP, and the number of DMRS total ports and port information corresponding to the DMRS configuration index X are read through Table 1. If the current scheduling of the UE is multi-TRP, the total number of DMRS ports, the number of ports, and the port status of each transmission point corresponding to the DMRS configuration index X are read through Table 4.
  • step 52 includes: transmitting, by using downlink control information, the index and indication information indicating a transmission point type of a transmission point corresponding to the index to the terminal;
  • the point type is single point transmission or multi point transmission.
  • the transmission point type includes a single point transmission and a multi-point transmission; the downlink control information carries indication information indicating a transmission point type of the transmission point corresponding to the index, so that the terminal can configure the table query according to the determined transmission point type. Corresponding configuration information.
  • Manner 4 multiple transmission points adopt unified DMRS configuration signaling, and the index includes a primary index and a secondary index corresponding to the primary index; the primary index is in the DMRS configuration table. An index associated with the total number of ports; the secondary index is an index associated with a port number in the DMRS configuration table.
  • the index is set to a primary index and a secondary index corresponding to the primary index; each primary index may correspond to multiple secondary indexes; the primary index is associated with the total port book; the secondary index and each The port number of the transmission point is associated; in the process of parsing, the terminal may first determine the total number of ports according to the primary index, and further determine specific configuration information according to the secondary index.
  • Table 5 which illustrates a multi-point transmission (taking two transmission points as an example) configurable configuration information:
  • the total DMRS configuration signaling overhead is S1+S2.
  • Mode 5 Multiple transmission points adopt unified DMRS configuration signaling, and multiple transmission points include three transmission points.
  • the DMRS configuration tables given in the above manners 1 to 4 are all based on the DMRS patterns in the related art in FIG. 1-2, in which the ports in the CDM group and different TD-OCC groups cannot be obtained. It is divided into different transmission point limits, so only two transmission points can be supported to achieve multi-TRP.
  • the total number of ports is 5, the total port number is 0 to 4, the port number assigned to transmission point 1 is 0 to 1, and the port number assigned to transmission point 2 is 2 to 3.
  • the port number assigned to transmission point 3 (DMRS port group 3) is 4; the number of ports for each of the three transmission points is 2, 2, 1, respectively.
  • whether the same PDSCH transmission is used may be determined according to the port status of each transmission point. If the number of ports selected by each transmission point is close, the same PDSCH may be allocated to the user. Otherwise, it may be considered to allocate different transmission points to different PDSCHs, or only use some of the transmission points to schedule the PDSCH of the user. For example, if the total number of ports scheduled by the user is 6, from Table 4, for example, there are two options. The number of ports at different transmission points is ⁇ 4, 2 ⁇ and ⁇ 3, 3 ⁇ , respectively, if the ports between transmission points are equal. For example, ⁇ 3, 3 ⁇ , the two transmission points are configured to the same PDSCH. If it is determined to be ⁇ 4, 2 ⁇ , then it is considered to transmit only 4 ports with transmission point 1, or to simultaneously schedule transmission point 2. Another PDSCH for this user. This can further simplify the above various tables and reduce the overhead of signaling.
  • the step of transmitting the index to the terminal by using the downlink control information includes: encapsulating the index in a preset field of downlink control information, and using the downlink control information, The index is sent to the terminal; or, in the downlink control information, a preset field is added to the index, and the index is sent to the terminal by using the downlink control information.
  • the index may be encapsulated in a preset field of the downlink control information, and the location of the preset field is notified to the terminal, so that the terminal can obtain the index; and the preset field may be added to the index, such as a preset. Identifiers or overheads, etc., to facilitate the terminal to identify the index.
  • the step of sending the index to the terminal by using the downlink control information includes: encapsulating the index in a preset character format in a preset field of the downlink control information, and adopting the downlink control Information, the index is sent to the terminal.
  • the transmission may be performed in a preset character format, such as binary data or hexadecimal data, so that the terminal can be parsed according to the preset character format.
  • a preset character format such as binary data or hexadecimal data
  • some embodiments of the present disclosure configure an index for the DMRS configuration information of the transmission point of the multipoint transmission, and send the index to the terminal by using the downlink control information, so that the DCI information indicating the DMRS configuration information of the PDSCH is implemented, and
  • the terminal can query the corresponding configuration information in the DMRS configuration table according to the index, so that multiple transmission points transmit one physical downlink shared channel; and the signaling overhead is saved by using the index; the disclosure solves that multiple transmission points simultaneously transmit one PDSCH, how to indicate the problem of DMRS configuration information of the PDSCH through DCI information.
  • some embodiments of the present disclosure provide a solution for the scenario in which one PDSCH is simultaneously transmitted by multiple transmission points. Some embodiments of the present disclosure fully consider the manner of transmission through two transmission points, and also address the indication of DMRS configuration information transmitted over three transmission points.
  • some embodiments of the present disclosure further provide a method for receiving control information, which is applied to a terminal, and the method includes steps 61-62.
  • Step 61 Acquire an index of the configuration information of the demodulation reference signal DMRS of the physical downlink shared channel carried in the downlink control information in a preset DMRS configuration table.
  • the terminal When receiving the downlink control information, the terminal acquires an index carried in the downlink control information, and the physical downlink shared channel (DSCH) is used to carry downlink service data, a paging message, and the like.
  • DSCH physical downlink shared channel
  • the DMRS configuration information needs to be used to notify the terminal of the total port allocation of multiple transmission points, and which ports are allocated to each transmission point, and indicate the DMRS configuration information of the PDSCH by using Downlink Control Information (DCI).
  • DCI Downlink Control Information
  • the preset DMRS configuration table has multiple pieces of configuration information, where the configuration information includes the number of ports corresponding to the transmission point and the port number; and in the DMRS configuration table, there are separate associations for each The index of the configuration information, that is, the index corresponding to each configuration information, so that the terminal acquires the index carried in the DCI when receiving the DCI.
  • Step 62 Search for configuration information indicated by the index in the DMRS configuration table.
  • the terminal searches for the configuration information indicated by the index in the DMRS configuration table according to the index carried in the DCI to determine the configuration information.
  • the step 62 includes: determining a transmission point type of the transmission point corresponding to the index, where the transmission point type includes single point transmission and multi-point transmission; and searching from the preset DMRS configuration table The configuration information indicated by the index under the transmission point type of the corresponding transmission point of the index.
  • the step of determining a transmission point type of a transmission point corresponding to the index includes: according to a transmission point type carried in the downlink indication information, indicating a transmission point corresponding to the index And indicating, by the indication information, a transmission point type of the transmission point corresponding to the index; or determining a transmission point type of the transmission point corresponding to the index according to the quasi-common base station information carried in the downlink indication information.
  • the QCL information of the multiple transmission points carried in the DCI information or other indication information indicating the type of the transmission point it can be known whether the current scheduling of the UE is a single TRP or a multi TRP, and the DMRS configuration index can be parsed at the same time; Determined according to a Quasi-Common Site (QCL), wherein the QCL information is used to indicate that different information belongs to the same transmission point, for example, may include a Channel State Information Reference Signal (CSIRS) configuration with a DMRS quasi-co-site at each transmission point.
  • CSIRS Channel State Information Reference Signal
  • Information, quasi-co-site information has the same channel transmission characteristics, and information can share channel characteristic information with each other.
  • DMRS and CSIRS1 quasi-co-sites on transmission point 1 represent two transmission points, and CSIRS1 and CSIRS2 are configured on each transmission point. This information can be used to know that there are two transmission points.
  • Manner 1 Single-point transmission; in the foregoing solution, the step of searching for the configuration information indicated by the index under the transmission point type of the transmission point corresponding to the index from the preset DMRS configuration table, The method includes: when the transmission point type of the index is a single point transmission, from the preset DMRS configuration table, searching for a single point transmission type, the transmission point of the single point transmission indicated by each of the indexes The corresponding number of ports and the port number.
  • the transmission point type of the index is single-point transmission
  • the preset DMRS configuration table look for the configuration information indicated by the index under the type of single-point transmission, and the indication indicated by each index
  • the number of ports corresponding to the transmission point of the single point transmission and the port number (the number of ports and the port number on the same line as the index).
  • the N TRPs are respectively regarded as a single transmission point (single TRP), which are respectively configured according to the DMRS configuration information of the single TRP; from the preset DMRS configuration table, the type of the single transmission point is obtained, and the indexing station
  • the indicated configuration information for example, if the terminal supports two transmission points, the configuration information corresponding to each index is obtained from the DMRS configuration table.
  • Table 1 refers to Table 1 in the first embodiment.
  • Table 1 only the type of single-point transmission is included, and the configuration information indicated by the two indexes can be directly obtained.
  • Table 2 and Table 3 a single point is required. Under the type of transmission (a column of a single transmission point index), the configuration information corresponding to the index is queried.
  • the step of searching for the configuration information indicated by the index under the transmission point type of the transmission point corresponding to the index from the preset DMRS configuration table includes: when When the transmission point type is multi-point transmission, from the preset DMRS configuration table, under the type of finding multi-point transmission, the number of transmission points of the multi-point transmission indicated by the index, and the port supported by each transmission point number.
  • the transmission point type of the index is multi-point transmission
  • the preset DMRS configuration table look for the type of multi-point transmission (one column of the multiple transmission point index), and the configuration information indicated by the index, The number of transmission points of the multipoint transmission indicated by each of the indexes, and the number of ports supported by each transmission point.
  • Table 4 For example, refer to Table 4 in the first embodiment.
  • Table 4 only the type of point transmission is included, and the configuration information indicated by the two indexes is directly obtained.
  • Table 2 and Table 3 multiple points are required.
  • the DMRS configuration table further includes: a port number and a port number allocated for each transmission point;
  • any two port numbers of the port numbers of different transmission points are non-code division multiplexing and non-time domain orthogonal codes.
  • the DMRS configuration table further includes a port number and a port number allocated for each transmission point, and also gives which ports and port numbers are allocated to each transmission point, that is, each transmission point.
  • DMRS port group The DMRS port group assigned to each transmission point can be given separately, and all possible port combinations of each transmission point are given, and the base station notifies the terminal of the corresponding index.
  • the terminal queries the DMRS configuration table to query the configuration information according to the index.
  • the index includes a primary index and a secondary index corresponding to the primary index
  • the index includes a primary index and a secondary index corresponding to the primary index;
  • the primary index is an index associated with a total number of ports in the DMRS configuration table;
  • the secondary index is an index associated with the port number in the DMRS configuration table.
  • the index is set to a primary index and a secondary index corresponding to the primary index; each primary index may correspond to multiple secondary indexes; the primary index is associated with the total port book; the secondary index and each The port number of the transmission point is associated; in the process of parsing, the terminal may first determine the total number of ports according to the primary index, and further determine specific configuration information according to the secondary index.
  • Mode 4 Multiple transmission points adopt unified DMRS configuration signaling, and multiple transmission points include three transmission points.
  • the DMRS configuration table given in the first mode to the third mode is given based on the DMRS pattern in the related art in FIG. 1-2, in which the ports in the CDM group and different TD-OCC groups cannot be obtained. It is divided into different transmission point limits, so only two transmission points can be supported to achieve multi-TRP.
  • the terminal queries the total number of ports of the three transmission points according to the index, the total port number, and the corresponding port number and port number.
  • the total number of ports is 5, the total port number is 0 to 4, the port number assigned to transmission point 1 is 0 to 1; the port number assigned to transmission point 2 is 2. To 3, the port number assigned to transmission point 3 is 4; the number of ports of each of the three transmission points is 2, 2, 1, respectively.
  • the method for searching for the configuration information indicated by the index in the DMRS configuration table includes: searching for a secondary index corresponding to the primary index in the DMRS configuration table; The configuration information indicated by the secondary index in the DMRS configuration table.
  • the terminal first searches for a corresponding secondary index according to the primary index, and then determines configuration information according to the secondary index.
  • a multi-point transmission (taking two transmission points as an example) configurable configuration information is illustrated in Table 5. If the primary index is indicated by S1 bits, the secondary index is used. S2 bit indication. The total DMRS configuration signaling overhead is S1+S2.
  • the step of acquiring the index of the configuration information of the demodulation reference signal DMRS of the physical downlink shared channel carried in the downlink control information in the preset DMRS configuration table includes: presetting the downlink control information In the field, the index of the configuration information of the demodulation reference signal DMRS of the physical downlink shared channel is obtained in a preset DMRS configuration table; or, in the downlink control information, the byte added with the preset field is obtained, where the added The byte of the preset field is an index of the configuration information of the demodulation reference signal DMRS of the physical downlink shared channel in the preset DMRS configuration table.
  • the terminal identifies the index according to a pre-agreed manner, such as obtaining an index in a preset field of the downlink control information, or obtaining an index from a byte of the preset field, where the preset field may be a preset identifier or an overhead. Wait.
  • the step of acquiring the index of the configuration information of the demodulation reference signal DMRS of the physical downlink shared channel carried in the downlink control information in the preset DMRS configuration table includes: presetting the downlink control information a field that obtains a preset character format field, where the preset character format field is an index of a configuration information of a demodulation reference signal DMRS of the physical downlink shared channel in a preset DMRS configuration table.
  • the parsing may be performed in a preset character format, such as binary data, or hexadecimal data.
  • some embodiments of the present disclosure are configured to search for an index in the preset DMRS configuration table by using an index of the DMRS configuration information of the PDSCH carried in the downlink control information, and searching for the index indicated by the index in the DMRS configuration table.
  • the configuration information is implemented, and the terminal can query the corresponding configuration information in the DMRS configuration table according to the index, so that multiple transmission points transmit one physical downlink shared channel; and the signaling overhead is saved by using the index; the disclosure solves multiple transmissions.
  • the point transmits a PDSCH at the same time, and how to indicate the DMRS configuration information of the PDSCH through the DCI information.
  • some embodiments of the present disclosure provide a solution for the scenario in which one PDSCH is simultaneously transmitted by multiple transmission points. Some embodiments of the present disclosure fully consider the manner of transmission through two transmission points, and also address the indication problem of DMRS configuration information transmitted through three transmission points.
  • some embodiments of the present disclosure further provide a base station 700, including: an index obtaining module 701, configured to acquire configuration information of a demodulation reference signal DMRS of a physical downlink shared channel in a preset DMRS configuration table. And an index sending module 702, configured to send the index to the terminal by using downlink control information.
  • an index obtaining module 701 configured to acquire configuration information of a demodulation reference signal DMRS of a physical downlink shared channel in a preset DMRS configuration table.
  • an index sending module 702 configured to send the index to the terminal by using downlink control information.
  • the index obtaining module 701 includes: an obtaining sub-module, configured to obtain, from the preset DMRS configuration table, an index corresponding to configuration information that meets a configuration condition of the terminal; the configuration information includes a total The number of ports and the total port number; the configuration conditions include the number of transmission points currently supported by the terminal and the number of ports supported by each transmission point.
  • the acquiring sub-module includes: a single transmission point acquiring unit, configured to acquire, from the preset DMRS configuration table, a configuration that matches each transmission point of the single-point transmission currently supported by the terminal. An index corresponding to the information; wherein, the total number of ports included in each of the configuration information does not exceed the number of ports supported by the transmission point corresponding to the configuration information.
  • the index sending module 702 includes: a first sending submodule, configured to send, by using the downlink control information, an index corresponding to the configuration information corresponding to each transmission point currently supported by the terminal to the terminal.
  • the acquiring sub-module includes: a multi-transmission point acquiring unit, configured to acquire, from the preset DMRS configuration table, the number of transmission points included in the multi-point transmission and the number of transmission points of the terminal An index corresponding to the configuration information that matches, and the total number of ports does not exceed the total number of ports supported by the terminal.
  • the DMRS configuration table further includes: a port number and a port number allocated for each transmission point; wherein any two port numbers of the port numbers of different transmission points are non-code division multiplexing and Non-time domain orthogonal code.
  • the index sending module 702 includes: a second sending submodule, configured to send, by using downlink control information, the index and the indication information of the transmission point type used to indicate the transmission point corresponding to the index.
  • the transmission point type is single point transmission or multi point transmission.
  • the index includes a primary index and a secondary index corresponding to the primary index;
  • the primary index is an index associated with a total number of ports in the DMRS configuration table;
  • the secondary index is an index associated with the port number in the DMRS configuration table.
  • the index sending module 702 includes: a third sending submodule, configured to encapsulate the index in a preset field of downlink control information, and send the index to the index by using the downlink control information
  • the terminal adds a preset field to the index in the downlink control information, and sends the index to the terminal by using the downlink control information.
  • the index sending module 702 includes: a fourth sending sub-module, configured to encapsulate the index in a preset character format in a preset field of downlink control information, and by using the downlink control information, The index is sent to the terminal.
  • some embodiments of the present disclosure configure an index for the DMRS configuration information of the transmission point of the multipoint transmission, and send the index to the terminal by using the downlink control information, so that the DCI information indicating the DMRS configuration information of the PDSCH is implemented, and
  • the terminal can query the corresponding configuration information in the DMRS configuration table according to the index, so that multiple transmission points transmit one physical downlink shared channel; and the signaling overhead is saved by using the index; the disclosure solves that multiple transmission points simultaneously transmit one PDSCH, how to indicate the problem of DMRS configuration information of the PDSCH through DCI information.
  • some embodiments of the present disclosure further provide a terminal 800, including: an obtaining module 801, configured to acquire configuration information of a demodulation reference signal DMRS of a physical downlink shared channel carried in downlink control information. An index in the DMRS configuration table; and a searching module 802, configured to search for configuration information indicated by the index in the DMRS configuration table.
  • the searching module 802 includes: a type determining sub-module, configured to determine a transmission point type of a transmission point corresponding to the index, where the transmission point type includes single-point transmission and multi-point transmission; And an information finding submodule, configured to search, from the preset DMRS configuration table, configuration information indicated by the index under a transmission point type of the corresponding transmission point of the index.
  • the information search sub-module includes: a single transmission point searching unit, configured to: when the transmission point type of the index is single-point transmission, look for a single point from the preset DMRS configuration table. The number of ports and the port number corresponding to the transmission point of the single-point transmission indicated by each index in the type of transmission.
  • the information search sub-module includes: a multiple transmission point searching unit, configured to search for a multi-point transmission from the preset DMRS configuration table when the transmission point type is multi-point transmission. Type, the number of transmission points of the multipoint transmission indicated by the index, and the number of ports supported by each transmission point.
  • the type determining sub-module includes: a first determining unit, configured to determine, according to the indication information of the transmission point type that is used to indicate the transmission point corresponding to the index, in the downlink indication information, The transmission point type of the transmission point corresponding to the index; or the second determining unit, configured to determine, according to the quasi-common base station information carried in the downlink indication information, a transmission point type of the transmission point corresponding to the index.
  • the DMRS configuration table further includes: a port number and a port number allocated for each transmission point; wherein any two port numbers of the port numbers of different transmission points are non-code division multiplexing and Non-time domain orthogonal code.
  • the index includes a primary index and a secondary index corresponding to the primary index;
  • the primary index is an index associated with a total number of ports in the DMRS configuration table;
  • the secondary index is an index associated with the port number in the DMRS configuration table.
  • the locating module 802 includes: an index search sub-module, configured to search for a secondary index corresponding to the first-level index in the DMRS configuration table; and searching for the DMRS configuration table, the second The configuration information indicated by the level index.
  • the acquiring module 801 includes: a first acquiring submodule, configured to acquire, in a preset field of the downlink control information, configuration information of the demodulation reference signal DMRS of the physical downlink shared channel in the preset DMRS.
  • the second sub-module is configured to obtain, in the downlink control information, a byte added with a preset field, where the byte added with the preset field is a demodulation of the physical downlink shared channel.
  • the index of the reference signal DMRS configuration information in the preset DMRS configuration table is configured to obtain, in the downlink control information, a byte added with a preset field, where the byte added with the preset field is a demodulation of the physical downlink shared channel.
  • the obtaining module 801 includes: a third acquiring sub-module, configured to acquire a preset character format field in a preset field of the downlink control information, where the preset character format field is physical The index of the configuration information of the demodulation reference signal DMRS of the downlink shared channel in the preset DMRS configuration table.
  • some embodiments of the present disclosure are configured to search for an index in the preset DMRS configuration table by using an index of the DMRS configuration information of the PDSCH carried in the downlink control information, and searching for the index indicated by the index in the DMRS configuration table.
  • the configuration information is implemented, and the terminal 800 can query the corresponding configuration information in the DMRS configuration table according to the index, so that multiple transmission points transmit one physical downlink shared channel; and the signaling overhead is saved by using the index; the disclosure solves multiple The transmission point simultaneously transmits one PDSCH, and how to indicate the problem of the DMRS configuration information of the PDSCH through the DCI information.
  • some embodiments of the present disclosure further provide a base station, including: a first memory 920, a first processor 900, and are stored on the first memory 920 and operable on the processor a computer program; the first processor 900 is configured to read a program in the first memory 920, and control the first processor 900 to acquire configuration information of the demodulation reference signal DMRS of the physical downlink shared channel in a preset DMRS configuration table.
  • the index is such that the first transceiver 910 transmits the index to the terminal through the downlink control information.
  • the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by the first processor 900 and various circuits of the memory represented by the first memory 920. .
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • the first transceiver 910 can be a plurality of components, including a transmitter and a transceiver, providing means for communicating with various other devices on a transmission medium.
  • the first processor 900 is responsible for managing the bus architecture and the usual processing, and the first memory 920 can store data used by the first processor 900 when performing operations.
  • the first processor 900 When the first processor 900 obtains the index of the configuration information of the demodulation reference signal DMRS of the physical downlink shared channel in the preset DMRS configuration table, the first processor 900 is configured to: obtain the match from the preset DMRS configuration table.
  • the first processor 900 When the first processor 900 obtains an index corresponding to the configuration information of the configuration condition of the terminal from the preset DMRS configuration table, the first processor is configured to obtain the terminal from the preset DMRS configuration table.
  • An index corresponding to the configuration information matched by each transmission point of the currently supported single point transmission; wherein the total number of ports included in each of the configuration information does not exceed the number of ports supported by the transmission point corresponding to the configuration information.
  • the first transceiver 910 When the first transceiver 910 sends the index to the terminal by using the downlink control information, the first transceiver 910 is configured to send, by using the downlink control information, an index corresponding to the configuration information corresponding to each transmission point currently supported by the terminal. Give the terminal.
  • the first processor 900 When the first processor 900 obtains an index corresponding to the configuration information of the configuration condition of the terminal from the preset DMRS configuration table, the first processor is configured to: obtain the included information from the preset DMRS configuration table. An index corresponding to the configuration information that the number of transmission points of the multipoint transmission matches the number of transmission points of the terminal, and the total number of ports does not exceed the total number of ports supported by the terminal.
  • the DMRS configuration table further includes: a port number and a port number allocated for each transmission point; wherein any two port numbers of different transmission point port numbers are non-code division multiplexing and non-time domain positive Cross code.
  • the first transceiver 910 when the index is sent to the terminal by using the downlink control information, is specifically used to: use the downlink control information, and use the index and the transmission point type used to indicate the transmission point corresponding to the index.
  • the indication information is sent to the terminal; the transmission point type is single point transmission or multi-point transmission.
  • the index includes a primary index and a secondary index corresponding to the primary index; the primary index is an index associated with a total number of ports in the DMRS configuration table; An index associated with the port number in the DMRS configuration table.
  • the method is specifically configured to: encapsulate the index in a preset field of downlink control information, and use the downlink control information to The index is sent to the terminal; or, in the downlink control information, a preset field is added to the index, and the index is sent to the terminal by using the downlink control information.
  • the first transceiver 910 when the index is sent to the terminal by using the downlink control information, is specifically configured to: encapsulate the index in a preset character format in a preset field of the downlink control information, and adopt the downlink control. Information, the index is sent to the terminal.
  • the present disclosure further provides a terminal, including: a second processor 1010; and a second memory 1030 connected to the second processor 1010 through a bus interface 1020.
  • the second memory 1030 is configured to store programs and data used by the second processor 1010 when performing operations, and a second transceiver 1040 connected to the second processor 1010 through the bus interface 1020, It is used to receive and transmit data under the control of the second processor 1010.
  • the second processor 1010 is configured to obtain an index of the configuration information of the demodulation reference signal DMRS of the physical downlink shared channel carried in the downlink control information in a preset DMRS configuration table, and search the index in the DMRS configuration table. The configuration information indicated.
  • the second processor 1010 searches for the configuration information indicated by the index in the DMRS configuration table
  • the second processor 1010 is specifically configured to: determine a transmission point type of a transmission point corresponding to the index, where the transmission point type includes a single point Transmission and multipoint transmission; from the preset DMRS configuration table, searching for the configuration information indicated by the index under the transmission point type of the corresponding transmission point of the index.
  • the second processor 1010 is configured to: when the configuration information indicated by the index is used in the transmission point type of the transmission point corresponding to the index, in the preset DMRS configuration table, specifically, when: When the transmission point type of the index is single-point transmission, from the preset DMRS configuration table, the number of ports corresponding to the transmission point of the single-point transmission indicated by each index is found under the type of single-point transmission and The port number.
  • the second processor 1010 is configured to: when the configuration information indicated by the index is used in the transmission point type of the transmission point corresponding to the index, in the preset DMRS configuration table, specifically, when: When the transmission point type is multi-point transmission, from the preset DMRS configuration table, under the type of finding multi-point transmission, the number of transmission points of the multi-point transmission indicated by the index, and the port supported by each transmission point number.
  • the method is specifically configured to: according to the type of the transmission point that is used in the downlink indication information to indicate the transmission point corresponding to the index And indicating, by the indication information, a transmission point type of the transmission point corresponding to the index; or determining a transmission point type of the transmission point corresponding to the index according to the quasi-common base station information carried in the downlink indication information.
  • the DMRS configuration table further includes: a port number and a port number allocated for each transmission point; wherein any two port numbers of different transmission point port numbers are non-code division multiplexing and non-time domain positive Cross code.
  • the index includes a primary index and a secondary index corresponding to the primary index; the primary index is an index associated with a total number of ports in the DMRS configuration table; An index associated with the port number in the DMRS configuration table.
  • the method is specifically configured to: search for a secondary index corresponding to the primary index in the DMRS configuration table; The configuration information indicated by the secondary index in the DMRS configuration table.
  • the second processor 1010 When the second processor 1010 obtains the index of the configuration information of the demodulation reference signal DMRS of the physical downlink shared channel carried in the downlink control information in the preset DMRS configuration table, the second processor 1010 is specifically configured to: preset in the downlink control information. In the field, the index of the configuration information of the demodulation reference signal DMRS of the physical downlink shared channel is obtained in a preset DMRS configuration table; or, in the downlink control information, the byte added with the preset field is obtained, where the added The byte of the preset field is an index of the configuration information of the demodulation reference signal DMRS of the physical downlink shared channel in the preset DMRS configuration table.
  • the second processor 1010 When the second processor 1010 obtains the index of the configuration information of the demodulation reference signal DMRS of the physical downlink shared channel carried in the downlink control information in the preset DMRS configuration table, the second processor 1010 is specifically configured to: preset in the downlink control information. a field that obtains a preset character format field, where the preset character format field is an index of a configuration information of a demodulation reference signal DMRS of the physical downlink shared channel in a preset DMRS configuration table.
  • the bus architecture may include any number of interconnected buses and bridges, and specifically, various circuits of the memory represented by the one or more processors represented by the second processor 1010 and the second memory 1030. Linked together.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • the second transceiver 1040 can be a plurality of components, including a transmitter and a transceiver, providing means for communicating with various other devices on a transmission medium.
  • the user interface 1050 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the second processor 1010 is responsible for managing the bus architecture and general processing, and the second memory 1030 can store data used by the second processor 1010 in performing operations.
  • the objects of the present disclosure can also be achieved by running a program or a set of programs on any computing device.
  • the computing device can be a well-known general purpose device.
  • the objects of the present disclosure may also be realized by merely providing a program product including program code for implementing the method or apparatus. That is to say, such a program product also constitutes the present disclosure, and a storage medium storing such a program product also constitutes the present disclosure.
  • the storage medium may be any known storage medium or any storage medium developed in the future.
  • various components or steps may be decomposed and/or recombined.
  • Some embodiments of the present disclosure further provide a computer readable storage medium having stored thereon a computer program, the program being executed by the processor to implement the following steps: acquiring configuration information of a demodulation reference signal DMRS of a physical downlink shared channel An index in a preset DMRS configuration table; and sending the index to the terminal by using downlink control information.
  • a computer readable storage medium having stored thereon a computer program, the program being executed by the processor to implement the following steps: acquiring configuration information of a demodulation reference signal DMRS of a physical downlink shared channel An index in a preset DMRS configuration table; and sending the index to the terminal by using downlink control information.
  • the step of obtaining the index of the configuration information of the demodulation reference signal DMRS of the physical downlink shared channel in the preset DMRS configuration table includes: obtaining, from the preset DMRS configuration table, the configuration condition that meets the configuration of the terminal.
  • the step of obtaining an index corresponding to the configuration information that meets the configuration condition of the terminal from the preset DMRS configuration table includes: obtaining, from the preset DMRS configuration table, a single point currently supported by the terminal An index corresponding to the configuration information matched by each transmission point of the transmission; wherein the total number of ports included in each of the configuration information does not exceed the number of ports supported by the transmission point corresponding to the configuration information.
  • the step of transmitting the index to the terminal by using the downlink control information includes: sending, by using the downlink control information, an index corresponding to the configuration information corresponding to each transmission point currently supported by the terminal to the terminal.
  • the step of obtaining an index corresponding to the configuration information that meets the configuration condition of the terminal from the preset DMRS configuration table includes: obtaining, by using the preset DMRS configuration table, the transmission of the multipoint transmission included An index corresponding to the configuration information that the number of points matches the number of transmission points of the terminal, and the total number of ports does not exceed the total number of ports supported by the terminal.
  • the DMRS configuration table further includes: a port number and a port number allocated for each transmission point; wherein any two port numbers of different transmission point port numbers are non-code division multiplexing and non-time domain positive Cross code.
  • the step of transmitting the index to the terminal by using the downlink control information includes: sending, by using the downlink control information, the index and the indication information of the transmission point type used to indicate the transmission point corresponding to the index to Terminal; the transmission point type is single point transmission or multipoint transmission.
  • the index includes a primary index and a secondary index corresponding to the primary index; the primary index is an index associated with a total number of ports in the DMRS configuration table; An index associated with the port number in the DMRS configuration table.
  • the step of transmitting the index to the terminal by using the downlink control information includes: encapsulating the index in a preset field of downlink control information, and sending the index to the terminal by using the downlink control information Or, in the downlink control information, a preset field is added to the index, and the index is sent to the terminal by using the downlink control information.
  • the step of transmitting the index to the terminal by using the downlink control information includes: encapsulating the index in a preset character format in a preset field of the downlink control information, and using the downlink control information, The index is sent to the terminal.
  • Some embodiments of the present disclosure further provide a computer readable storage medium having stored thereon a computer program, the program being executed by the processor to perform the following steps: acquiring a demodulation reference of a physical downlink shared channel carried in the downlink control information An index of the configuration information of the signal DMRS in a preset DMRS configuration table; and searching for configuration information indicated by the index in the DMRS configuration table.
  • the step of searching for the configuration information indicated by the index in the DMRS configuration table includes: determining a transmission point type of a transmission point corresponding to the index, where the transmission point type includes single point transmission and multiple points Transmitting; searching, from the preset DMRS configuration table, the configuration information indicated by the index under the transmission point type of the corresponding transmission point of the index.
  • the step of searching for the configuration information indicated by the index under the transmission point type of the transmission point corresponding to the index from the preset DMRS configuration table including: when the index transmission point When the type is single-point transmission, from the preset DMRS configuration table, the number of ports corresponding to the transmission point of the single-point transmission indicated by each index and the port number are found under the type of single-point transmission.
  • the step of searching for the configuration information indicated by the index under the transmission point type of the transmission point corresponding to the index from the preset DMRS configuration table includes: when the transmission point type is In the case of multipoint transmission, from the preset DMRS configuration table, the number of transmission points indicated by the index and the number of ports supported by each transmission point under the type of multipoint transmission.
  • the step of determining the transmission point type of the transmission point corresponding to the index includes: determining, according to the indication information of the transmission point type used to indicate the transmission point corresponding to the index, in the downlink indication information, a transmission point type of the transmission point corresponding to the index; or determining a transmission point type of the transmission point corresponding to the index according to the quasi-common base station information carried in the downlink indication information.
  • the DMRS configuration table further includes: a port number and a port number allocated for each transmission point; wherein any two port numbers of different transmission point port numbers are non-code division multiplexing and non-time domain positive Cross code.
  • the index includes a primary index and a secondary index corresponding to the primary index; the primary index is an index associated with a total number of ports in the DMRS configuration table; An index associated with the port number in the DMRS configuration table.
  • the step of searching for the configuration information indicated by the index in the DMRS configuration table includes: searching for a secondary index corresponding to the primary index in the DMRS configuration table; searching for the DMRS configuration table The configuration information indicated by the secondary index.
  • the step of obtaining the index of the configuration information of the demodulation reference signal DMRS of the physical downlink shared channel carried in the downlink control information in the preset DMRS configuration table includes: acquiring in a preset field of the downlink control information The index of the configuration information of the demodulation reference signal DMRS of the physical downlink shared channel in the preset DMRS configuration table; or, in the downlink control information, the byte to which the preset field is added, where the preset field is added The byte is an index of the configuration information of the demodulation reference signal DMRS of the physical downlink shared channel in the preset DMRS configuration table.
  • the step of obtaining the index of the configuration information of the demodulation reference signal DMRS of the physical downlink shared channel carried in the downlink control information in the preset DMRS configuration table includes: acquiring the pre-predetermined field in the downlink control information
  • the field of the character format is set, and the field of the preset character format is an index of the configuration information of the demodulation reference signal DMRS of the physical downlink shared channel in the preset DMRS configuration table.

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Abstract

本公开提供控制信息的发送方法、接收方法、基站及终端。控制信息的发送方法应用于基站并且包括：获取物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引；以及通过下行控制信息，将索引发送给终端。

Description

控制信息的发送方法、接收方法、基站及终端
相关申请的交叉引用
本申请主张在2017年8月11日在中国提交的中国专利申请号No.201710687840.3的优先权，其全部内容通过引用包含于此。
技术领域
本公开涉及通信技术领域，尤其涉及控制信息的发送方法、控制信息的接收方法、基站及终端。
背景技术
在5G新空口(New Radio，NR)项目启动之后，为了降低处理时延、提升系统性能，重新对解调参考信号(Demodulation Reference Signal，DMRS)导频图样进行了设计和定义。参见图1至图4，在新的DMRS导频图样中，有多种不同的导频图样。具体配置如下：
配置一(Configuration 1)：
1.DMRS符号数为1：采用comb2+CS2，最大支持到4端口。
参见图1，图1中最多支持4个天线端口(Antenna Port)；其中comb2为频域复用，比如端口0和2之间就是comb2的复用关系。CS2为端口之间的序列采用循环移位方式(Cyclic Shifts)进行复用，比如端口0和1之间就是CS2的复用关系。
2.DMRS符号数为2：采用comb2+CS2+TD-OCC{(1，1))和(1，-1)}，最大支持到8端口。
参见图2，图2中最多支持8个天线端口；TD-OCC为时域正交码(Orthogonal Cover Code，OCC)复用，比如端口0/1和4/5之间采用时域OCC复用。
配置二(Configuration 2)：
1.DMRS符号数为1：采用2-FD-OCC{相邻资源单位(RE)的频域正交码}，最大支持到6端口。
参见图3，图3中最多支持6个天线端口；其中，2-FD-OCC即频域OCC复用，比如端口0和1之间就是频域OCC复用。
另外和其他端口之间采用频分多路复用(Frequency Division Multiplexing，FDM)方式，比如端口0/1和2/3之间采用FDM方式。
2.DMRS符号数为2：采用2-FD-OCC(相邻频域RE)+TD-OCC({1 1}和{1-1})，最大支持到12端口。
参见图4，图4中最多支持12个天线端口，TD-OCC为时域OCC复用，比如端口0/1和6/7之间采用时域OCC复用。
从上述DMRS各种模式可以看出：configuration1的情况，如果支持的最大端口数不超过4，则可以用图1的模式来配置；如果超过4，但是不超过8，可以用图2的模式来配置。
configuration2的情况，如果支持的最大端口数不超过6，则可以用图3的模式来配置，如果超过6，但是不超过12，可以用图4的模式来配置。在此的端口数是指该资源位置上复用的所有用户的端口数总和。
在5G NR系统中，为了提高用户设备(User Equipment，UE)的峰值速率，可以采用多个传输点(Transmission Reception Point，TRP)，每个UE可以同时在多个传输点传输物理下行共享信道(Physical Downlink Shared Channel，PDSCH)；多个传输点可以同时传输一个PDSCH，也可以每个传输点分别传输一个PDSCH。然而，如果多个传输点同时传输一个PDSCH，如何通过DCI信息指示该PDSCH的DMRS配置信息，相关技术中并没有解决方案。
发明内容
本公开提供了一种控制信息的发送方法、接收方法、基站及终端，以解决多个传输点同时传输一个PDSCH，如何通过DCI信息指示该PDSCH的DMRS配置信息的问题。
第一方面，本公开的一些实施例提供一种控制信息的发送方法，应用于基站。该方法包括：获取物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引；以及通过下行控制信息，将所述索引发 送给终端。
其中，上述方案中，所述获取物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引的步骤包括：从所述预设的DMRS配置表中，获取符合终端的配置条件的配置信息对应的索引；所述配置信息包括总端口数目以及总端口号；所述配置条件包括所述终端当前支持的传输点数目以及每个传输点所支持的端口数目。
其中，上述方案中，所述从所述预设的DMRS配置表中，获取符合终端的配置条件的配置信息对应的索引的步骤包括：从所述预设的DMRS配置表中，获取与终端当前支持的单点传输的每个传输点相匹配的配置信息对应的索引；其中，每个所述配置信息中包括的总端口数目不超过与该配置信息对应的传输点所支持的端口数目。
其中，上述方案中，所述通过下行控制信息，将所述索引发送给终端的步骤，包括：通过下行控制信息，将所述终端当前支持的每个传输点所对应的配置信息对应的索引发送给终端。
其中，上述方案中，所述从所述预设的DMRS配置表中，获取符合终端的配置条件的配置信息对应的索引的步骤包括：从所述预设的DMRS配置表中，获取包括的多点传输的传输点数目与所述终端的传输点数目相匹配、且总端口数目不超过所述终端所支持的总端口数目的配置信息对应的索引。
其中，上述方案中，所述DMRS配置表中还包括：为每个传输点分配的端口号以及端口数；其中，不同传输点的端口号中的任意两个端口号为非码分复用且非时域正交码。
其中，上述方案中，所述通过下行控制信息，将所述索引发送给终端的步骤，包括：通过下行控制信息，将所述索引以及用于指示所述索引对应的传输点的传输点类型的指示信息发送给终端；所述传输点类型为单点传输或多点传输。
其中，上述方案中，所述索引包括一级索引以及与所述一级索引对应的二级索引；所述一级索引为与所述DMRS配置表中的总端口数目相关联的索引；所述二级索引为与所述DMRS配置表中的端口号相关联的索引。
其中，上述方案中，所述通过下行控制信息，将所述索引发送给终端的 步骤，包括：将所述索引封装在下行控制信息的预设字段中，通过所述下行控制信息，将所述索引发送给终端；或，在下行控制信息中为所述索引添加预设字段，通过所述下行控制信息，将所述索引发送给终端。
其中，上述方案中，所述通过下行控制信息，将所述索引发送给终端的步骤，包括：将所述索引以预设的字符格式封装在下行控制信息的预设字段，通过所述下行控制信息，将所述索引发送给终端。
第二方面，本公开的一些实施例还提供了一种控制信息的接收方法，应用于终端，并且包括：获取下行控制信息中携带的物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引；查找所述DMRS配置表中所述索引所指示的配置信息。
其中，上述方案中，所述查找所述DMRS配置表中所述索引所指示的配置信息的步骤，包括：确定所述索引所对应的传输点的传输点类型，所述传输点类型包括单点传输以及多点传输；从所述预设的DMRS配置表中，查找所述索引的所对应的传输点的传输点类型下，所述索引所指示的配置信息。
其中，上述方案中，所述从所述预设的DMRS配置表中，查找所述索引所对应的传输点的传输点类型下，所述索引所指示的配置信息的步骤，包括：当所述索引的传输点类型为单点传输时，从所述预设的DMRS配置表中，查找单点传输的类型下，每个所述索引所指示的单点传输的传输点所对应的端口数目以及端口号。
其中，上述方案中，所述从所述预设的DMRS配置表中，查找所述索引所对应的传输点的传输点类型下，所述索引所指示的配置信息的步骤，包括：当所述传输点类型为多点传输时，从所述预设的DMRS配置表中，查找多点传输的类型下，所述索引所指示的多点传输的传输点数目、每个传输点所支持的端口数目。
其中，上述方案中，所述确定所述索引所对应的传输点的传输点类型的步骤，包括：根据所述下行指示信息中携带的用于指示所述索引对应的传输点的传输点类型的指示信息，确定所述索引所对应的传输点的传输点类型；或，根据所述下行指示信息中携带的准共基站信息，确定所述索引所对应的传输点的传输点类型。
其中，上述方案中，所述DMRS配置表中还包括：为每个传输点分配的端口号以及端口数；其中，不同传输点的端口号中的任意两个端口号为非码分复用且非时域正交码。
其中，上述方案中，所述索引包括一级索引以及与所述一级索引对应的二级索引；所述一级索引为与所述DMRS配置表中的总端口数目相关联的索引；所述二级索引为与所述DMRS配置表中的端口号相关联的索引。
其中，上述方案中，所述查找所述DMRS配置表中所述索引所指示的配置信息的步骤，包括：查找所述DMRS配置表中，所述一级索引对应的二级索引；查找所述DMRS配置表中，所述二级索引所指示的配置信息。
其中，上述方案中，所述获取下行控制信息中携带的物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引的步骤，包括：在下行控制信息的预设字段中，获取物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引；或，在下行控制信息中，获取添加有预设字段的字节，所述添加有预设字段的字节为物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引。
其中，上述方案中，所述获取下行控制信息中携带的物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引的步骤，包括：在下行控制信息的预设字段，获取预设的字符格式的字段，所述预设的字符格式的字段为物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引。
第三方面，本公开的一些实施例还提供了一种基站，包括：索引获取模块，用于获取物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引；以及索引发送模块，用于通过下行控制信息，将所述索引发送给终端。
其中，上述方案中，所述索引获取模块包括：获取子模块，用于从所述预设的DMRS配置表中，获取符合终端的配置条件的配置信息对应的索引；所述配置信息包括总端口数目以及总端口号；所述配置条件包括所述终端当前支持的传输点数目以及每个传输点所支持的端口数目。
其中，上述方案中，所述获取子模块包括：单传输点获取单元，用于从 所述预设的DMRS配置表中，获取与终端当前支持的单点传输的每个传输点相匹配的配置信息对应的索引；其中，每个所述配置信息中包括的总端口数目不超过与该配置信息对应的传输点所支持的端口数目。
其中，上述方案中，所述索引发送模块包括：第一发送子模块，用于通过下行控制信息，将所述终端当前支持的每个传输点所对应的配置信息对应的索引发送给终端。
其中，上述方案中，所述获取子模块包括：多传输点获取单元，用于从所述预设的DMRS配置表中，获取包括的多点传输的传输点数目与所述终端的传输点数目相匹配、且总端口数目不超过所述终端所支持的总端口数目的配置信息对应的索引。
其中，上述方案中，所述DMRS配置表中还包括：为每个传输点分配的端口号以及端口数；其中，不同传输点的端口号中的任意两个端口号为非码分复用且非时域正交码。
其中，上述方案中，所述索引发送模块包括：第二发送子模块，用于通过下行控制信息，将所述索引以及用于指示所述索引对应的传输点的传输点类型的指示信息发送给终端；所述传输点类型为单点传输或多点传输。
其中，上述方案中，所述索引包括一级索引以及与所述一级索引对应的二级索引；所述一级索引为与所述DMRS配置表中的总端口数目相关联的索引；所述二级索引为与所述DMRS配置表中的端口号相关联的索引。
其中，上述方案中，所述索引发送模块包括：第三发送子模块，用于将所述索引封装在下行控制信息的预设字段中，通过所述下行控制信息，将所述索引发送给终端；或，在下行控制信息中为所述索引添加预设字段，通过所述下行控制信息，将所述索引发送给终端。
其中，上述方案中，所述索引发送模块包括：第四发送子模块，用于将所述索引以预设的字符格式封装在下行控制信息的预设字段，通过所述下行控制信息，将所述索引发送给终端。
第四方面，本公开的一些实施例还提供了一种终端，包括：获取模块，用于获取下行控制信息中携带的物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引；以及查找模块，用于查找所述 DMRS配置表中所述索引所指示的配置信息。
其中，上述方案中，所述查找模块包括：类型确定子模块，用于确定所述索引所对应的传输点的传输点类型，所述传输点类型包括单点传输以及多点传输；以及信息查找子模块，用于从所述预设的DMRS配置表中，查找所述索引的所对应的传输点的传输点类型下，所述索引所指示的配置信息。
其中，上述方案中，所述信息查找子模块包括：单传输点查找单元，用于当所述索引的传输点类型为单点传输时，从所述预设的DMRS配置表中，查找单点传输的类型下，每个所述索引所指示的单点传输的传输点所对应的端口数目以及端口号。
其中，上述方案中，所述信息查找子模块包括：多传输点查找单元，用于当所述传输点类型为多点传输时，从所述预设的DMRS配置表中，查找多点传输的类型下，所述索引所指示的多点传输的传输点数目、每个传输点所支持的端口数目。
其中，上述方案中，所述类型确定子模块包括：第一确定单元，用于根据所述下行指示信息中携带的用于指示所述索引对应的传输点的传输点类型的指示信息，确定所述索引所对应的传输点的传输点类型；或，第二确定单元，用于根据所述下行指示信息中携带的准共基站信息，确定所述索引所对应的传输点的传输点类型。
其中，上述方案中，所述DMRS配置表中还包括：为每个传输点分配的端口号以及端口数；其中，不同传输点的端口号中的任意两个端口号为非码分复用且非时域正交码。
其中，上述方案中，所述索引包括一级索引以及与所述一级索引对应的二级索引；所述一级索引为与所述DMRS配置表中的总端口数目相关联的索引；所述二级索引为与所述DMRS配置表中的端口号相关联的索引。
其中，上述方案中，所述查找模块包括：索引查找子模块，用于查找所述DMRS配置表中，所述一级索引对应的二级索引；查找所述DMRS配置表中，所述二级索引所指示的配置信息。
其中，上述方案中，所述获取模块包括：第一获取子模块，用于在下行控制信息的预设字段中，获取物理下行共享信道的解调参考信号DMRS的配 置信息在预设的DMRS配置表中的索引；或，第二获取子模块，用于在下行控制信息中，获取添加有预设字段的字节，所述添加有预设字段的字节为物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引。
其中，上述方案中，所述获取模块包括：第三获取子模块，用于在下行控制信息的预设字段，获取预设的字符格式的字段，所述预设的字符格式的字段为物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引。
第五方面，本公开的一些实施例还提供了一种基站，包括第一存储器、第一处理器及存储在所述第一存储器上并可在所述第一处理器上运行的计算机程序；所述第一处理器执行所述程序时实现以下步骤：获取物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引；以及通过下行控制信息，将所述索引发送给终端。
第六方面，本公开的一些实施例还提供了一种计算机可读存储介质，其上存储有计算机程序，该程序被处理器执行时实现以下步骤：获取物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引；以及通过下行控制信息，将所述索引发送给终端。
第七方面，本公开的一些实施例还提供了终端，包括第二存储器、第二处理器及存储在所述第二存储器上并可在所述第二处理器上运行的计算机程序；所述第二处理器执行所述程序时实现以下步骤：获取下行控制信息中携带的物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引；以及查找所述DMRS配置表中所述索引所指示的配置信息。
第八方面，本公开的一些实施例还提供了一种计算机可读存储介质，其上存储有计算机程序，该程序被处理器执行时实现以下步骤：获取下行控制信息中携带的物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引；以及查找所述DMRS配置表中所述索引所指示的配置信息。
本公开的上述技术方案的有益效果如下：
上述方案中，通过为多点传输的传输点的DMRS配置信息配置索引，并 将索引通过下行控制信息发送给终端，实现DCI信息指示该PDSCH的DMRS配置信息，并使终端可根据索引去DMRS配置表中查询对应的配置信息，实现多个传输点传输一个物理下行共享信道；并且通过索引的方式节省了信令开销；本公开解决了多个传输点同时传输一个PDSCH，如何通过DCI信息指示该PDSCH的DMRS配置信息的问题。
附图说明
图1为相关技术中的解调参考信号的配置模式一；
图2为相关技术中的解调参考信号的配置模式二；
图3为相关技术中的解调参考信号的配置模式三；
图4为相关技术中的解调参考信号的配置模式四；
图5表示本公开的一些实施例的基站侧的控制信息的发送方法的流程图；
图6表示本公开的一些实施例的终端侧的控制信息的接收方法的流程图；
图7表示本公开的一些实施例的基站的模块示意图；
图8表示本公开的一些实施例的终端的模块示意图；
图9表示本公开的一些实施例的基站的结构框图；以及
图10表示本公开的一些实施例的终端的结构框图。
具体实施方式
为使本公开要解决的技术问题、技术方案和优点更加清楚，下面将结合附图及具体实施例进行详细描述。在下面的描述中，提供诸如具体的配置和组件的特定细节仅仅是为了帮助全面理解本公开的一些实施例。因此，本领域技术人员应该清楚，可以对这里描述的实施例进行各种改变和修改而不脱离本公开的范围和精神。另外，为了清楚和简洁，省略了对已知功能和构造的描述。
应理解，说明书通篇中提到的“一个实施例”或“一实施例”意味着与实施例有关的特定特征、结构或特性包括在本公开的至少一个实施例中。因此，在整个说明书各处出现的“在一个实施例中”或“在一实施例中”未必一定指相同的实施例。此外，这些特定的特征、结构或特性可以任意适合的方式结合 在一个或多个实施例中。
在本公开的各种实施例中，应理解，下述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本公开的一些实施例的实施过程构成任何限定。
另外，本文中术语“系统”和“网络”在本文中常可互换使用。
在本申请所提供的实施例中，应理解，“与A相应的B”表示B与A相关联，根据A可以确定B。但还应理解，根据A确定B并不意味着仅仅根据A确定B，还可以根据A和/或其它信息确定B。
具体地，本公开提供了一种控制信息的发送方法、控制信息的接收方法、基站及终端，以解决多个传输点同时传输一个PDSCH，如何通过DCI信息指示该PDSCH的DMRS配置信息的问题。
如图5所示，本公开的一些实施例提供一种控制信息的发送方法，应用于基站，该方法包括步骤51-52。
步骤51，获取物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引。
其中，物理层下行共享信道(Physical Downlink Shared Channel P，DSCH)用于承载下行业务数据、寻呼消息等。对于采用多个传输点传输一个PDSCH的情况，可以每个传输点传输该PDSCH的不同端口，最终作为终端的一次调度统一解调。因此，需要通过DMRS配置信息通知终端多个传输点的总端口分配情况，以及每个传输点各自分配哪些端口，并通过下行控制信息(Downlink Control Information，DCI)指示该PDSCH的DMRS配置信息。
本公开的实施方式中，预设的DMRS配置表中存在多条配置信息，配置信息中包括分配给传输点对应的端口数目以及端口号；且在DMRS配置表中，存在分别用于关联每条配置信息的索引，也即与每条配置信息一一对应的索引，这样，基站在下发DCI时，将DMRS的配置信息中包括的索引下发给终端即可，以节省字节开销。
其中，步骤51包括：从所述预设的DMRS配置表中，获取符合终端的配置条件的配置信息对应的索引；所述配置信息包括总端口数目以及总端口号；所述配置条件包括所述终端当前支持的传输点数目以及每个传输点所支 持的端口数目。
其中，基站在为终端配置DMRS的过程中，基站已知(或获取)终端当前支持的传输点数目以及每个传输点所支持的端口数目，确定终端的配置条件；再从DMRS配置表，获取符合终端的配置条件的配置信息对应的索引。
步骤52，通过下行控制信息，将所述索引发送给终端。
其中，当索引确定之后，将所述携带在下行控制信息中，通过下行控制信息将索引发送给终端。
具体地，上述方案中，所述从所述预设的DMRS配置表中，获取符合终端的配置条件的配置信息对应的索引，可按照如下两种方式进行：
方式一：多个传输点分别按照单传输点处理，可选地，步骤51包括：
从所述预设的DMRS配置表中，获取与终端当前支持的单点传输的每个传输点相匹配的配置信息对应的索引；其中，每个所述配置信息中包括的总端口数目不超过与该配置信息对应的传输点所支持的端口数目。
其中，N个TRP分别当作一个单传输点(single TRP)，各自根据single TRP的DMRS配置信息来配置；从预设的DMRS配置表中，获取单传输点的类型的配置信息中，与终端当前支持的传输点相匹配的配置信息对应的索引；比如，终端支持两个传输点，则分别从DMRS配置表中，获取分别与两个传输点相匹配的配置信息的索引；且对于一确定的传输点，与该传输点相匹配的配置信息中包括的总端口数目，不超过该传输点支持的端口数目。
作为第一示例，参见表1，表1中列举了单点传输可配置的配置信息的情况：
表1：
Figure PCTCN2018099319-appb-000001
Figure PCTCN2018099319-appb-000002
需要说明的是，上述表1中所包含的配置信息，如果分配给该用户的端口数超过该配置的一个码分复用(CDM)组或者CDM+时域正交码(TD-OCC)组的端口数，对于单用户多输入多输出(SU-MIMO)用户，尽量保证组间端口数的平均，从而保证每个端口分配较多的功率，提升导频性能。
对多用户多输入多输出(MU-MIMO)用户或者端口数不超过一个CDM组或者CDM+TD-OCC组的端口数的SU-MIMO用户，尽量保证在一个CDM组或者CDM+TD-OCC组内分配端口，对用户来说节省了导频资源，对用户间来说，也减少了干扰。
具体地，上述表1中，左数第一列为单传输点对应的索引，第二列至第三列为配置信息，第四列为该配置信息对应的背景技术中的导频图的标识号，标识号为1，对应导频图中图1；配置号为2，对应导频图的图2：port表示端口号；对于采用单点传输的传输点，比如索引为18，则总端口数目为4，端口号为0到3；比如索引为13时，总端口数目为2，端口号为6和7。
其中，上述方案中，所述通过下行控制信息，将所述索引发送给终端的步骤，包括：
通过下行控制信息，将所述终端当前支持的每个传输点所对应的配置信息对应的索引发送给终端。
本步骤中，若终端包括N个传输点，则每个传输点的索引均需要发送给 终端，假设single TRP的DMRS配置信息用M1比特表示，表1中M1＝5比特。则N个TRP总的DMRS配置信令开销为N*M1比特。通过N个TRP分别获得各自传输点的端口情况，不需要再额外通知。
方式二：多个传输点采用统一的DMRS配置信令通知，来联合配置该UE在所有TRP上的DMRS配置端口信息；可选地，步骤51包括：
从所述预设的DMRS配置表中，获取包括的多点传输的传输点数目与所述终端的传输点数目相匹配、且总端口数目不超过所述终端所支持的总端口数目的配置信息对应的索引。
本步骤中，在为多点传输匹配配置信息的过程中，配置信息需满足包括的多点传输的传输点数目与所述终端的传输点数目相匹配、且总端口数目不超过所述终端所支持的总端口数目；也就是说，配置信息中包括的多点传输的传输点数目与终端所支持多点传输的传输点数目相同，且配置信息中包括的总端口数目不超过终端所支持的总端口数目。
作为第二示例，参见表2，表2中示意了一种多点传输可配置的配置信息的情况：
表2:
Figure PCTCN2018099319-appb-000003
Figure PCTCN2018099319-appb-000004
上述表2中，N个TRP采用统一的DMRS配置信令通知，来联合配置该UE在所有TRP上的DMRS配置端口信息。表2中的DMRS配置表可以采用多传输点(multi TRP)和single TRP统一表格的形式，第一列(左起)为多传输点索引，第二列为单传输点索引；根据DCI信息中携带的多个传输点的准共站址(QCL)，QCL信息可以是DMRS和CSIRS准共站址的信息，也可以是其他可以识别multi-TRP和single-TRP的信息，可以获知当前对UE的调度是single TRP还是multi TRP，同时可以解析出DMRS配置索引(index)。
假设索引为X，然后通过表2来确定总端口数目以及端口号信息。如果当前调度为single TRP，则根据第二列的index读取表格信息；如果当前调度为multi TRP，则根据第一列的index读取表格信息。
或者以单个传输点索引为基准，如果确认当前调度为multi-TRP，则将获得的DMRS配置index+差值，然后按照多个传输点索引读取表中的总端口数目和端口信息。差值可以根据表中多个传输点索引和单个传输点索引的关系确定。
比如，X为5，并且当前子帧调度用户的形式为multi-TRP，则读取的DMRS配置信息为：3，port1-3；如果当前子帧调度用户的形式为single TRP，则读取的DMRS配置信息为：1，port5。
进一步地，上述方案中，所述DMRS配置表中还包括：为每个传输点分配的端口号以及端口数；其中，不同传输点的端口号中的任意两个端口号为 非码分复用且非时域正交码。
本步骤中，对于多点传输的方式，还可为每个传输点分配的端口号以及端口数，同时给出每个传输点分配了哪些端口以及端口数，即每个的传输点的DMRS端口组。可以采用单独给出每个传输点分配的DMRS端口组的方式，给出每个传输点全部可能的端口组合，将对应的index通知给终端。比如上述表2中，假设multi-TRP方式，DMRS配置index为8，则分配的DMRS为4层，端口0-3，需要通知的两个传输点的DMRS端口组分别为{0，1}和{2，3}。可以将该端口组进行编号，将编号index通知给终端，也可以直接将端口号列表通知给终端。
需要说明的是，不同传输点的端口号中的任意两个端口号为非码分复用且非时域正交码；也就是说，对于终端在传输一个PDSCH的不同传输点各自分配的端口号中，需满足非码分复用(Code Division Multiplexing，CDM，码分复用)且非时域正交码(Orthogonal Cover Code，OCC，正交码)；从UE角度，为了减少处理复杂度以及考虑实现限制的问题，同一用户的频域CDM的端口不能分到不同传输点上，还可以要求TD-OCC的端口也不能分到不同传输点上，这些限制总结起来就是图1-图4中相同填充内容的端口(比如图1中的0和1，图中采用相同的填充)，如果配置给同一个用户，则不能分到不同传输点上，只能在一个传输点上传输。那么如果N个传输点采用一个统一的DMRS配置表，则需要基于以上原则给出。
因此，还可以在上述表2中同时增加multi-TRP时的各个传输点的DMRS端口组信息，作为一个整体的DMRS配置index通知给终端。作为第三示例，参见表3，表3中示意了一种多点传输(以两个传输点为例)可配置的配置信息的情况：
表3：
Figure PCTCN2018099319-appb-000005
Figure PCTCN2018099319-appb-000006
上述表3中，如果采用多点传输，索引为10，则传输点总端口数为6，总端口号为0到5；其中传输点1分配的端口号为DMRS端口组1，即0到1，4到5；传输点2分配的端口号为DMRS端口组2，即2到3；两者的端口数目(DMRS端口组1，2)分别为4和2.
方式三：多个传输点采用统一的DMRS配置信令通知，来联合配置该UE在所有TRP上的DMRS配置端口信息；
作为第四示例，参见表4，表4中示意了一种多点传输(以两个传输点为例)可配置的配置信息的情况：DMRS配置表的形式可以采用multi TRP 和single TRP独立表格的形式，下面单独给出multi-TRP时的DMRS配置表，见表4。single TRP独立表格参见上述表1。
根据DCI信息中携带的多个传输点的QCL信息或者其他指示传输点类型的指示信息，可以获知当前对UE的调度是single TRP还是multi TRP，同时可以解析出DMRS配置index。若索引为X，然后分别通过表1和表4来确定给用户配置的总端口数目以及端口index信息。假设确定当前对UE的调度是single TRP，则通过表1读取DMRS配置索引X对应的DMRS总端口数目以及端口信息。如果当前对UE的调度时multi-TRP，则通过表4读取DMRS配置索引X对应的DMRS总端口数目、端口数、以及每个传输点的端口情况。
表4：
Figure PCTCN2018099319-appb-000007
另一方面，本公开的一些实施例中，步骤52包括：通过下行控制信息，将所述索引以及用于指示所述索引对应的传输点的传输点类型的指示信息发送给终端；所述传输点类型为单点传输或多点传输。
其中，传输点类型包括单点传输以及多点传输；在下行控制信息携带用于指示所述索引对应的传输点的传输点类型的指示信息，便于终端根据确定传输点类型，去配置表里查询对应的配置信息。
方式四：多个传输点采用统一的DMRS配置信令通知，所述索引包括一级索引以及与所述一级索引对应的二级索引；所述一级索引为与所述DMRS配置表中的总端口数目相关联的索引；所述二级索引为与所述DMRS配置表中的端口号相关联的索引。
其中，将索引设置为一级索引以及与所述一级索引对应的二级索引；每个一级索引可对应多个二级索引；一级索引与总端口书相关联；二级索引与各个传输点的端口号相关联；终端在解析的过程中可首先根据一级索引确定总端口数，再进一步根据二级索引确定具体的配置信息。
作为第五示例，参见表5，表5中示意了一种多点传输(以两个传输点为例)可配置的配置信息的情况：
表5：
Figure PCTCN2018099319-appb-000008
上述表5中，若一级索引采用S1比特标示，二级索引采用S2比特标示。则总的DMRS配置信令开销为S1+S2。
方式五：多个传输点采用统一的DMRS配置信令通知，多个传输点包括三个传输点。上述方式一到方式四中给定的DMRS配置表都是基于相关技术中的图1-2的DMRS图样给出的，在该图样中，由于受到CDM组以及不同TD-OCC组内的端口不能分到不同的传输点的限制，所以只能支持最大两个传输点来实现multi-TRP。
如果是图3-4的DMRS图样，根据相关限制，可以支持最大3个传输点来实现multi-TRP。
在方式三的基础上给出基于三个传输点的DMRS配置表的实施例，见表6。上述其他方案也可以同时支持3个传输点。
表6：
Figure PCTCN2018099319-appb-000009
上述表6中，若索引为6，则总端口数目为5，总端口号为0到4，为传输点1分配的端口号为0到1；传输点2分配的端口号为2到3，为传输点3分配的端口号(DMRS端口组3)为4；三个传输点各自的端口数目分别为2，2，1。
可选地，在上述所有实施方式的基础上，还可以根据各个传输点的端口情况确定是否采用同一个PDSCH传输，如果各个传输点选择的端口数很接近，则可以分配给用户的同一个PDSCH，否则可以考虑将不同传输点分配给不同的PDSCH，或者只用其中的部分传输点调度用户的PDSCH。例如：如果用户调度总端口数为6，从以表4为例，有两种选择，不同传输点的端口数分别{4，2}和{3，3}，如果传输点之间的端口相等，比如为{3，3}，则将该两个传输点配置给同一个PDSCH，如果确定为{4，2}，则可以考虑只用传输点1传输4端口，或者将传输点2同时调度该用户的另一个PDSCH。这样可以进一步简化上述各个表格，减少信令传递的开销。
其中，上述方案中，所述通过下行控制信息，将所述索引发送给终端的步骤，包括：将所述索引封装在下行控制信息的预设字段中，通过所述下行控制信息，将所述索引发送给终端；或，在下行控制信息中为所述索引添加预设字段，通过所述下行控制信息，将所述索引发送给终端。
具体地，为了便于终端识别索引，可将索引封装在下行控制信息的预设字段中，通知终端该预设字段的位置，便于终端获取索引；还可为索引添加预设字段，比如预设的标识符或开销等，便于终端识别索引。
其中，上述方案中，所述通过下行控制信息，将所述索引发送给终端的步骤，包括：将所述索引以预设的字符格式封装在下行控制信息的预设字段，通过所述下行控制信息，将所述索引发送给终端。
本步骤中，在传输索引的过程中，可以以预设的字符格式进行传输，比如二进制数据，或十六进制数据等，便于终端根据预设的字符格式进行解析。
综上所述，本公开的一些实施例，通过为多点传输的传输点的DMRS配置信息配置索引，并将索引通过下行控制信息发送给终端，实现DCI信息指示该PDSCH的DMRS配置信息，并使终端可根据索引去DMRS配置表中查询对应的配置信息，实现多个传输点传输一个物理下行共享信道；并且通过索引的方式节省了信令开销；本公开解决了多个传输点同时传输一个PDSCH，如何通过DCI信息指示该PDSCH的DMRS配置信息的问题。
由此可知，本公开的一些实施例，针对多个传输点同时传输一个PDSCH的情景，给出了解决方案。本公开的一些实施例充分考虑了通过两个传输点 进行传输的方式，还解决了通过三个传输点进行传输的DMRS配置信息的指示问题。
如图6所示，本公开的一些实施例还提供了一种控制信息的接收方法，应用于终端，该方法包括步骤61-62。
步骤61，获取下行控制信息中携带的物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引。
其中，终端接收到下行控制信息时，获取下行控制信息中携带的索引；物理层下行共享信道(Physical Downlink Shared Channel P，DSCH)用于承载下行业务数据、寻呼消息等。对于采用多个传输点传输一个PDSCH的情况，可以每个传输点传输该PDSCH的不同端口，最终作为终端的一次调度统一解调。因此，需要通过DMRS配置信息通知终端多个传输点的总端口分配情况，以及每个传输点各自分配哪些端口，并通过下行控制信息(Downlink Control Information，DCI)指示该PDSCH的DMRS配置信息。
本公开的实施方式中，预设的DMRS配置表中存在多条配置信息，配置信息中包括分配给传输点对应的端口数目以及端口号；且在DMRS配置表中，存在分别用于关联每条配置信息的索引，也即与每条配置信息一一对应的索引，这样，终端在接收DCI时，获取其中携带的索引。
步骤62，查找所述DMRS配置表中所述索引所指示的配置信息。
本步骤中，终端根据DCI中携带的索引去查找所述DMRS配置表中所述索引所指示的配置信息，以确定配置信息。
其中，上述方案中，步骤62包括：确定所述索引所对应的传输点的传输点类型，所述传输点类型包括单点传输以及多点传输；从所述预设的DMRS配置表中，查找所述索引的所对应的传输点的传输点类型下，所述索引所指示的配置信息。
具体地，参见第一实施例中的表2以及表3，此三个配置表中均包括单点传输和多点传输的情况，因此，在终端解调的过程中，需首先确定传输点类型，再根据传输点类型，查找该类型下，索引所指示的配置信息。
其中，上述方案中，所述确定所述索引所对应的传输点的传输点类型的步骤，包括：根据所述下行指示信息中携带的用于指示所述索引对应的传输 点的传输点类型的指示信息，确定所述索引所对应的传输点的传输点类型；或，根据所述下行指示信息中携带的准共基站信息，确定所述索引所对应的传输点的传输点类型。
具体地，根据DCI信息中携带的多个传输点的QCL信息或者其他指示传输点类型的指示信息，可以获知当前对UE的调度是single TRP还是multi TRP，同时可以解析出DMRS配置index；还可根据准共站址(QCL)确定，其中，QCL信息用来指示不同信息属于同一个传输点，比如可以包括与每一个传输点上的DMRS准共站址的信道状态信息参考信号(CSIRS)配置信息，准共站址的信息之间具有相同的信道传输特性，信息之间可以互相共享信道特性信息。比如说传输点1上的DMRS和CSIRS1准共站址，传输点2上的DMRS和CSIRS2准共站址，则代表有两个传输点，每个传输点上配置了CSIRS1和CSIRS2。可以通过该信息获知有两个传输点。
方式一：单点传输；上述方案中，所述从所述预设的DMRS配置表中，查找所述索引所对应的传输点的传输点类型下，所述索引所指示的配置信息的步骤，包括：当所述索引的传输点类型为单点传输时，从所述预设的DMRS配置表中，查找单点传输的类型下，每个所述索引所指示的单点传输的传输点所对应的端口数目以及端口号。
其中，当所述索引的传输点类型为单点传输时，从所述预设的DMRS配置表中，查找单点传输的类型下，索引所指示的配置信息，每个所述索引所指示的单点传输的传输点所对应的端口数目以及端口号(与索引同一行的端口数以及端口号等)。该实施方式中，N个TRP分别当作一个单传输点(single TRP)，各自根据single TRP的DMRS配置信息来配置；从预设的DMRS配置表中，获取单传输点的类型下，索引所指示的配置信息中，比如，终端支持两个传输点，则分别从DMRS配置表中，获取分别各自的索引所对应的配置信息。
比如，参见第一实施例中的表1，表1中只包括单点传输的类型，则直接获取两个索引所指示的配置信息即可；而对于表2以及表3，则需去单点传输的类型下(单个传输点索引的一列)，查询索引对应的配置信息。
方式二：多点传输；
其中，上述方案中，所述从所述预设的DMRS配置表中，查找所述索引所对应的传输点的传输点类型下，所述索引所指示的配置信息的步骤，包括：当所述传输点类型为多点传输时，从所述预设的DMRS配置表中，查找多点传输的类型下，所述索引所指示的多点传输的传输点数目、每个传输点所支持的端口数目。
其中，当所述索引的传输点类型为多点传输时，从所述预设的DMRS配置表中，查找多点传输的类型下(多传输点索引的一列)，索引所指示的配置信息，每个所述索引所指示的多点传输的传输点数目、每个传输点所支持的端口数目。
比如，参见第一实施例中的表4，表4中只包括度点传输的类型，则直接获取两个索引所指示的配置信息即可；而对于表2以及表3，则需去多点传输的类型下查询索引对应的配置信息。
其中，上述方案中，所述DMRS配置表中还包括：为每个传输点分配的端口号以及端口数；
其中，不同传输点的端口号中的任意两个端口号为非码分复用且非时域正交码。
本步骤中，对于多点传输的方式，DMRS配置表还包括为每个传输点分配的端口号以及端口数，同时给出每个传输点分配了哪些端口以及端口数，即每个的传输点的DMRS端口组。可以采用单独给出每个传输点分配的DMRS端口组的方式，给出每个传输点全部可能的端口组合，基站将对应的index通知给终端。终端根据index去DMRS配置表查询配置信息。
方式三：多点传输，所述索引包括一级索引以及与所述一级索引对应的二级索引；
其中，上述方案中，所述索引包括一级索引以及与所述一级索引对应的二级索引；所述一级索引为与所述DMRS配置表中的总端口数目相关联的索引；所述二级索引为与所述DMRS配置表中的端口号相关联的索引。
其中，将索引设置为一级索引以及与所述一级索引对应的二级索引；每个一级索引可对应多个二级索引；一级索引与总端口书相关联；二级索引与各个传输点的端口号相关联；终端在解析的过程中可首先根据一级索引确定 总端口数，再进一步根据二级索引确定具体的配置信息。
方式四：多个传输点采用统一的DMRS配置信令通知，多个传输点包括三个传输点。上述方式一到方式三中给定的DMRS配置表都是基于相关技术中的图1-2的DMRS图样给出的，在该图样中，由于受到CDM组以及不同TD-OCC组内的端口不能分到不同的传输点的限制，所以只能支持最大两个传输点来实现multi-TRP。
如果是图3-4的DMRS图样，根据相关限制，可以支持最大3个传输点来实现multi-TRP。
在方式二的基础上给出基于三个传输点的DMRS配置表的实施例，见第一实施例中的表6。上述其他方案也可以同时支持3个传输点。
当包括三个传输点时，终端根据索引去表6中查询三个传输点的总端口数目，总端口号以及各自对应的端口数、端口号。
表6中，若终端接收到的索引为6，则总端口数目为5，总端口号为0到4，为传输点1分配的端口号为0到1；传输点2分配的端口号为2到3，为传输点3分配的端口号为4；三个传输点各自的端口数目分别为2，2，1。
其中，上述方案中，所述查找所述DMRS配置表中所述索引所指示的配置信息的步骤，包括：查找所述DMRS配置表中，所述一级索引对应的二级索引；查找所述DMRS配置表中，所述二级索引所指示的配置信息。
具体地，终端在查找的过程中，首先根据一级索引查找对应的二级索引，再根据二级索引确定配置信息。
参见第一实施例中的表5，表5中示意了一种多点传输(以两个传输点为例)可配置的配置信息的情况，若一级索引采用S1比特标示，二级索引采用S2比特标示。则总的DMRS配置信令开销为S1+S2。
其中，上述方案中，所述获取下行控制信息中携带的物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引的步骤，包括：在下行控制信息的预设字段中，获取物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引；或，在下行控制信息中，获取添加有预设字段的字节，所述添加有预设字段的字节为物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引。
具体地，终端根据预先约定的方式识别索引，比如在下行控制信息的预设字段中获取索引；或从添加预设字段的字节中获取索引，预设字段可以是预设的标识符或开销等。
其中，上述方案中，所述获取下行控制信息中携带的物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引的步骤，包括：在下行控制信息的预设字段，获取预设的字符格式的字段，所述预设的字符格式的字段为物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引。
本步骤中，在解析索引的过程中，可以以预设的字符格式进行解析，比如二进制数据，或十六进制数据等。
综上所述，本公开的一些实施例，通过获取下行控制信息中携带的PDSCH的DMRS的配置信息在预设的DMRS配置表中的索引，查找所述DMRS配置表中所述索引所指示的配置信息并，实现终端可根据索引去DMRS配置表中查询对应的配置信息，实现多个传输点传输一个物理下行共享信道；并且通过索引的方式节省了信令开销；本公开解决了多个传输点同时传输一个PDSCH，如何通过DCI信息指示该PDSCH的DMRS配置信息的问题。
由此可知，本公开的一些实施例，针对多个传输点同时传输一个PDSCH的情景，给出了解决方案。本公开的一些实施例充分考虑了通过两个传输点进行传输的方式，还解决了通过三个传输点进行传输的DMRS配置信息的指示问题。
如图7所示，本公开的一些实施例还提供了一种基站700，包括：索引获取模块701，用于获取物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引；和，索引发送模块702，用于通过下行控制信息，将所述索引发送给终端。
其中，上述方案中，所述索引获取模块701包括：获取子模块，用于从所述预设的DMRS配置表中，获取符合终端的配置条件的配置信息对应的索引；所述配置信息包括总端口数目以及总端口号；所述配置条件包括所述终端当前支持的传输点数目以及每个传输点所支持的端口数目。
其中，上述方案中，所述获取子模块包括：单传输点获取单元，用于从所述预设的DMRS配置表中，获取与终端当前支持的单点传输的每个传输点相匹配的配置信息对应的索引；其中，每个所述配置信息中包括的总端口数目不超过与该配置信息对应的传输点所支持的端口数目。
其中，上述方案中，所述索引发送模块702包括：第一发送子模块，用于通过下行控制信息，将所述终端当前支持的每个传输点所对应的配置信息对应的索引发送给终端。
其中，上述方案中，所述获取子模块包括：多传输点获取单元，用于从所述预设的DMRS配置表中，获取包括的多点传输的传输点数目与所述终端的传输点数目相匹配、且总端口数目不超过所述终端所支持的总端口数目的配置信息对应的索引。
其中，上述方案中，所述DMRS配置表中还包括：为每个传输点分配的端口号以及端口数；其中，不同传输点的端口号中的任意两个端口号为非码分复用且非时域正交码。
其中，上述方案中，所述索引发送模块702包括：第二发送子模块，用于通过下行控制信息，将所述索引以及用于指示所述索引对应的传输点的传输点类型的指示信息发送给终端；所述传输点类型为单点传输或多点传输。
其中，上述方案中，所述索引包括一级索引以及与所述一级索引对应的二级索引；所述一级索引为与所述DMRS配置表中的总端口数目相关联的索引；所述二级索引为与所述DMRS配置表中的端口号相关联的索引。
其中，上述方案中，所述索引发送模块702包括：第三发送子模块，用于将所述索引封装在下行控制信息的预设字段中，通过所述下行控制信息，将所述索引发送给终端；或在下行控制信息中为所述索引添加预设字段，通过所述下行控制信息，将所述索引发送给终端。
其中，上述方案中，所述索引发送模块702包括：第四发送子模块，用于将所述索引以预设的字符格式封装在下行控制信息的预设字段，通过所述下行控制信息，将所述索引发送给终端。
综上所述，本公开的一些实施例，通过为多点传输的传输点的DMRS配置信息配置索引，并将索引通过下行控制信息发送给终端，实现DCI信息指 示该PDSCH的DMRS配置信息，并使终端可根据索引去DMRS配置表中查询对应的配置信息，实现多个传输点传输一个物理下行共享信道；并且通过索引的方式节省了信令开销；本公开解决了多个传输点同时传输一个PDSCH，如何通过DCI信息指示该PDSCH的DMRS配置信息的问题。
如图8所示，本公开的一些实施例还提供了一种终端800，包括：获取模块801，用于获取下行控制信息中携带的物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引；和查找模块802，用于查找所述DMRS配置表中所述索引所指示的配置信息。
其中，上述方案中，所述查找模块802包括：类型确定子模块，用于确定所述索引所对应的传输点的传输点类型，所述传输点类型包括单点传输以及多点传输；以及，信息查找子模块，用于从所述预设的DMRS配置表中，查找所述索引的所对应的传输点的传输点类型下，所述索引所指示的配置信息。
其中，上述方案中，所述信息查找子模块包括：单传输点查找单元，用于当所述索引的传输点类型为单点传输时，从所述预设的DMRS配置表中，查找单点传输的类型下，每个所述索引所指示的单点传输的传输点所对应的端口数目以及端口号。
其中，上述方案中，所述信息查找子模块包括：多传输点查找单元，用于当所述传输点类型为多点传输时，从所述预设的DMRS配置表中，查找多点传输的类型下，所述索引所指示的多点传输的传输点数目、每个传输点所支持的端口数目。
其中，上述方案中，所述类型确定子模块包括：第一确定单元，用于根据所述下行指示信息中携带的用于指示所述索引对应的传输点的传输点类型的指示信息，确定所述索引所对应的传输点的传输点类型；或，第二确定单元，用于根据所述下行指示信息中携带的准共基站信息，确定所述索引所对应的传输点的传输点类型。
其中，上述方案中，所述DMRS配置表中还包括：为每个传输点分配的端口号以及端口数；其中，不同传输点的端口号中的任意两个端口号为非码分复用且非时域正交码。
其中，上述方案中，所述索引包括一级索引以及与所述一级索引对应的二级索引；所述一级索引为与所述DMRS配置表中的总端口数目相关联的索引；所述二级索引为与所述DMRS配置表中的端口号相关联的索引。
其中，上述方案中，所述查找模块802包括：索引查找子模块，用于查找所述DMRS配置表中，所述一级索引对应的二级索引；查找所述DMRS配置表中，所述二级索引所指示的配置信息。
其中，上述方案中，所述获取模块801包括：第一获取子模块，用于在下行控制信息的预设字段中，获取物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引；或，第二获取子模块，用于在下行控制信息中，获取添加有预设字段的字节，所述添加有预设字段的字节为物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引。
其中，上述方案中，所述获取模块801包括：第三获取子模块，用于在下行控制信息的预设字段，获取预设的字符格式的字段，所述预设的字符格式的字段为物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引。
综上所述，本公开的一些实施例，通过获取下行控制信息中携带的PDSCH的DMRS的配置信息在预设的DMRS配置表中的索引，查找所述DMRS配置表中所述索引所指示的配置信息并，实现终端800可根据索引去DMRS配置表中查询对应的配置信息，实现多个传输点传输一个物理下行共享信道；并且通过索引的方式节省了信令开销；本公开解决了多个传输点同时传输一个PDSCH，如何通过DCI信息指示该PDSCH的DMRS配置信息的问题。
如图9所示，本公开的一些实施例还提供了一种基站，包括：第一存储器920、第一处理器900及存储在所述第一存储器920上并可在所述处理器上运行的计算机程序；第一处理器900，用于读取第一存储器920中的程序，控制第一处理器900获取物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引；从而使得第一收发机910通过下行控制信息，将所述索引发送给终端。
其中，在图9中，总线架构可以包括任意数量的互联的总线和桥，具体由第一处理器900代表的一个或多个处理器和第一存储器920代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。第一收发机910可以是多个元件，即包括发送机和收发机，提供用于在传输介质上与各种其他装置通信的单元。第一处理器900负责管理总线架构和通常的处理，第一存储器920可以存储第一处理器900在执行操作时所使用的数据。
其中，第一处理器900获取物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引时，具体用于：从所述预设的DMRS配置表中，获取符合终端的配置条件的配置信息对应的索引；所述配置信息包括总端口数目以及总端口号；所述配置条件包括所述终端当前支持的传输点数目以及每个传输点所支持的端口数目。
其中，第一处理器900从所述预设的DMRS配置表中，获取符合终端的配置条件的配置信息对应的索引时，具体用于：从所述预设的DMRS配置表中，获取与终端当前支持的单点传输的每个传输点相匹配的配置信息对应的索引；其中，每个所述配置信息中包括的总端口数目不超过与该配置信息对应的传输点所支持的端口数目。
其中，第一收发机910通过下行控制信息，将所述索引发送给终端时，具体用于：通过下行控制信息，将所述终端当前支持的每个传输点所对应的配置信息对应的索引发送给终端。
其中，第一处理器900从所述预设的DMRS配置表中，获取符合终端的配置条件的配置信息对应的索引时，具体用于：从所述预设的DMRS配置表中，获取包括的多点传输的传输点数目与所述终端的传输点数目相匹配、且总端口数目不超过所述终端所支持的总端口数目的配置信息对应的索引。
其中，所述DMRS配置表中还包括：为每个传输点分配的端口号以及端口数；其中，不同传输点的端口号中的任意两个端口号为非码分复用且非时域正交码。
其中，第一收发机910通过下行控制信息，将所述索引发送给终端的时， 具体用于：通过下行控制信息，将所述索引以及用于指示所述索引对应的传输点的传输点类型的指示信息发送给终端；所述传输点类型为单点传输或多点传输。
其中，所述索引包括一级索引以及与所述一级索引对应的二级索引；所述一级索引为与所述DMRS配置表中的总端口数目相关联的索引；所述二级索引为与所述DMRS配置表中的端口号相关联的索引。
其中，第一收发机910通过下行控制信息，将所述索引发送给终端时，具体用于：将所述索引封装在下行控制信息的预设字段中，通过所述下行控制信息，将所述索引发送给终端；或，在下行控制信息中为所述索引添加预设字段，通过所述下行控制信息，将所述索引发送给终端。
其中，第一收发机910通过下行控制信息，将所述索引发送给终端时，具体用于：将所述索引以预设的字符格式封装在下行控制信息的预设字段，通过所述下行控制信息，将所述索引发送给终端。
为了更好的实现上述目的，如图10所示，本公开还提供了一种终端，包括：第二处理器1010；通过总线接口1020与所述第二处理器1010相连接的第二存储器1030，所述第二存储器1030用于存储所述第二处理器1010在执行操作时所使用的程序和数据，以及通过总线接口1020与所述第二处理器1010相连接的第二收发机1040，用于在第二处理器1010的控制下接收和发送数据。
其中，第二处理器1010用于获取下行控制信息中携带的物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引；查找所述DMRS配置表中所述索引所指示的配置信息。
其中，第二处理器1010查找所述DMRS配置表中所述索引所指示的配置信息时，具体用于：确定所述索引所对应的传输点的传输点类型，所述传输点类型包括单点传输以及多点传输；从所述预设的DMRS配置表中，查找所述索引的所对应的传输点的传输点类型下，所述索引所指示的配置信息。
其中，第二处理器1010从所述预设的DMRS配置表中，查找所述索引所对应的传输点的传输点类型下，所述索引所指示的配置信息时，具体用于：当所述索引的传输点类型为单点传输时，从所述预设的DMRS配置表中，查 找单点传输的类型下，每个所述索引所指示的单点传输的传输点所对应的端口数目以及端口号。
其中，第二处理器1010从所述预设的DMRS配置表中，查找所述索引所对应的传输点的传输点类型下，所述索引所指示的配置信息时，具体用于：当所述传输点类型为多点传输时，从所述预设的DMRS配置表中，查找多点传输的类型下，所述索引所指示的多点传输的传输点数目、每个传输点所支持的端口数目。
其中，第二处理器1010确定所述索引所对应的传输点的传输点类型时，具体用于：根据所述下行指示信息中携带的用于指示所述索引对应的传输点的传输点类型的指示信息，确定所述索引所对应的传输点的传输点类型；或，根据所述下行指示信息中携带的准共基站信息，确定所述索引所对应的传输点的传输点类型。
其中，所述DMRS配置表中还包括：为每个传输点分配的端口号以及端口数；其中，不同传输点的端口号中的任意两个端口号为非码分复用且非时域正交码。
其中，所述索引包括一级索引以及与所述一级索引对应的二级索引；所述一级索引为与所述DMRS配置表中的总端口数目相关联的索引；所述二级索引为与所述DMRS配置表中的端口号相关联的索引。
其中，第二处理器1010所述查找所述DMRS配置表中所述索引所指示的配置信息时，具体用于：查找所述DMRS配置表中，所述一级索引对应的二级索引；查找所述DMRS配置表中，所述二级索引所指示的配置信息。
其中，第二处理器1010获取下行控制信息中携带的物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引时，具体用于：在下行控制信息的预设字段中，获取物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引；或，在下行控制信息中，获取添加有预设字段的字节，所述添加有预设字段的字节为物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引。
其中，第二处理器1010获取下行控制信息中携带的物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引时，具体用 于：在下行控制信息的预设字段，获取预设的字符格式的字段，所述预设的字符格式的字段为物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引。
需要说明的是，在图10中，总线架构可以包括任意数量的互联的总线和桥，具体由第二处理器1010代表的一个或多个处理器和第二存储器1030代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。第二收发机1040可以是多个元件，即包括发送机和收发机，提供用于在传输介质上与各种其他装置通信的单元。针对不同的终端，用户接口1050还可以是能够外接内接需要设备的接口，连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。第二处理器1010负责管理总线架构和通常的处理，第二存储器1030可以存储第二处理器1010在执行操作时所使用的数据。
本领域技术人员可以理解，实现上述实施例的全部或者部分步骤可以通过硬件来完成，也可以通过计算机程序来指示相关的硬件来完成，所述计算机程序包括执行上述方法的部分或者全部步骤的指令；且该计算机程序可以存储于一可读存储介质中，存储介质可以是任何形式的存储介质，如易失性的存储介质或非易失性的存储介质。
此外，需要指出的是，在本公开的装置和方法中，显然，各部件或各步骤是可以分解和/或重新组合的。这些分解和/或重新组合应视为本公开的等效方案。并且，执行上述系列处理的步骤可以自然地按照说明的顺序按时间顺序执行，但是并不需要一定按照时间顺序执行，某些步骤可以并行或彼此独立地执行。对本领域的普通技术人员而言，能够理解本公开的方法和装置的全部或者任何步骤或者部件，可以在任何计算装置(包括处理器、存储介质等)或者计算装置的网络中，以硬件、固件、软件或者它们的组合加以实现，这是本领域普通技术人员在阅读了本公开的说明的情况下运用他们的基本编程技能就能实现的。
因此，本公开的目的还可以通过在任何计算装置上运行一个程序或者一组程序来实现。所述计算装置可以是公知的通用装置。因此，本公开的目的 也可以仅仅通过提供包含实现所述方法或者装置的程序代码的程序产品来实现。也就是说，这样的程序产品也构成本公开，并且存储有这样的程序产品的存储介质也构成本公开。显然，所述存储介质可以是任何公知的存储介质或者将来所开发出来的任何存储介质。还需要指出的是，在本公开的装置和方法中，显然，各部件或各步骤是可以分解和/或重新组合的。这些分解和/或重新组合应视为本公开的等效方案。并且，执行上述系列处理的步骤可以自然地按照说明的顺序按时间顺序执行，但是并不需要一定按照时间顺序执行。某些步骤可以并行或彼此独立地执行。
本公开的一些实施例还提供了一种计算机可读存储介质，其上存储有计算机程序，该程序被处理器执行时实现以下步骤：获取物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引；以及通过下行控制信息，将所述索引发送给终端。
其中，所述获取物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引的步骤包括：从所述预设的DMRS配置表中，获取符合终端的配置条件的配置信息对应的索引；所述配置信息包括总端口数目以及总端口号；所述配置条件包括所述终端当前支持的传输点数目以及每个传输点所支持的端口数目。
其中，所述从所述预设的DMRS配置表中，获取符合终端的配置条件的配置信息对应的索引的步骤包括：从所述预设的DMRS配置表中，获取与终端当前支持的单点传输的每个传输点相匹配的配置信息对应的索引；其中，每个所述配置信息中包括的总端口数目不超过与该配置信息对应的传输点所支持的端口数目。
其中，所述通过下行控制信息，将所述索引发送给终端的步骤，包括：通过下行控制信息，将所述终端当前支持的每个传输点所对应的配置信息对应的索引发送给终端。
其中，所述从所述预设的DMRS配置表中，获取符合终端的配置条件的配置信息对应的索引的步骤包括：从所述预设的DMRS配置表中，获取包括的多点传输的传输点数目与所述终端的传输点数目相匹配、且总端口数目不超过所述终端所支持的总端口数目的配置信息对应的索引。
其中，所述DMRS配置表中还包括：为每个传输点分配的端口号以及端口数；其中，不同传输点的端口号中的任意两个端口号为非码分复用且非时域正交码。
其中，所述通过下行控制信息，将所述索引发送给终端的步骤，包括：通过下行控制信息，将所述索引以及用于指示所述索引对应的传输点的传输点类型的指示信息发送给终端；所述传输点类型为单点传输或多点传输。
其中，所述索引包括一级索引以及与所述一级索引对应的二级索引；所述一级索引为与所述DMRS配置表中的总端口数目相关联的索引；所述二级索引为与所述DMRS配置表中的端口号相关联的索引。
其中，所述通过下行控制信息，将所述索引发送给终端的步骤，包括：将所述索引封装在下行控制信息的预设字段中，通过所述下行控制信息，将所述索引发送给终端；或，在下行控制信息中为所述索引添加预设字段，通过所述下行控制信息，将所述索引发送给终端。
其中，所述通过下行控制信息，将所述索引发送给终端的步骤，包括：将所述索引以预设的字符格式封装在下行控制信息的预设字段，通过所述下行控制信息，将所述索引发送给终端。
本公开的一些实施例还提供了一种计算机可读存储介质，其上存储有计算机程序，该程序被处理器执行时实现以下步骤：获取下行控制信息中携带的物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引；以及查找所述DMRS配置表中所述索引所指示的配置信息。
其中，所述查找所述DMRS配置表中所述索引所指示的配置信息的步骤，包括：确定所述索引所对应的传输点的传输点类型，所述传输点类型包括单点传输以及多点传输；从所述预设的DMRS配置表中，查找所述索引的所对应的传输点的传输点类型下，所述索引所指示的配置信息。
其中，所述从所述预设的DMRS配置表中，查找所述索引所对应的传输点的传输点类型下，所述索引所指示的配置信息的步骤，包括：当所述索引的传输点类型为单点传输时，从所述预设的DMRS配置表中，查找单点传输的类型下，每个所述索引所指示的单点传输的传输点所对应的端口数目以及端口号。
其中，所述从所述预设的DMRS配置表中，查找所述索引所对应的传输点的传输点类型下，所述索引所指示的配置信息的步骤，包括：当所述传输点类型为多点传输时，从所述预设的DMRS配置表中，查找多点传输的类型下，所述索引所指示的多点传输的传输点数目、每个传输点所支持的端口数目。
其中，所述确定所述索引所对应的传输点的传输点类型的步骤，包括：根据所述下行指示信息中携带的用于指示所述索引对应的传输点的传输点类型的指示信息，确定所述索引所对应的传输点的传输点类型；或，根据所述下行指示信息中携带的准共基站信息，确定所述索引所对应的传输点的传输点类型。
其中，所述DMRS配置表中还包括：为每个传输点分配的端口号以及端口数；其中，不同传输点的端口号中的任意两个端口号为非码分复用且非时域正交码。
其中，所述索引包括一级索引以及与所述一级索引对应的二级索引；所述一级索引为与所述DMRS配置表中的总端口数目相关联的索引；所述二级索引为与所述DMRS配置表中的端口号相关联的索引。
其中，所述查找所述DMRS配置表中所述索引所指示的配置信息的步骤，包括：查找所述DMRS配置表中，所述一级索引对应的二级索引；查找所述DMRS配置表中，所述二级索引所指示的配置信息。
其中，所述获取下行控制信息中携带的物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引的步骤，包括：在下行控制信息的预设字段中，获取物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引；或，在下行控制信息中，获取添加有预设字段的字节，所述添加有预设字段的字节为物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引。
其中，所述获取下行控制信息中携带的物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引的步骤，包括：在下行控制信息的预设字段，获取预设的字符格式的字段，所述预设的字符格式的字段为物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS 配置表中的索引。
以上所述的是本公开的可选实施方式，应当指出对于本技术领域的普通人员来说，在不脱离本公开所述原理前提下，还可以作出若干改进和润饰，这些改进和润饰也应视为本公开的保护范围。

Claims (44)

  1. 一种控制信息的发送方法，应用于基站，并且包括：
    获取物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引；以及
    通过下行控制信息，将所述索引发送给终端。
  2. 根据权利要求1所述的方法，其中，所述获取物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引的步骤包括：
    从所述预设的DMRS配置表中，获取符合终端的配置条件的配置信息对应的索引；所述配置信息包括总端口数目以及总端口号；
    所述配置条件包括所述终端当前支持的传输点数目以及每个传输点所支持的端口数目。
  3. 根据权利要求2所述的方法，其中，所述从所述预设的DMRS配置表中，获取符合终端的配置条件的配置信息对应的索引的步骤，包括：
    从所述预设的DMRS配置表中，获取与终端当前支持的单点传输的每个传输点相匹配的配置信息对应的索引；其中，每个所述配置信息中包括的总端口数目不超过与该配置信息对应的传输点所支持的端口数目。
  4. 根据权利要求3所述的方法，其中，所述通过下行控制信息，将所述索引发送给终端的步骤，包括：
    通过下行控制信息，将所述终端当前支持的每个传输点所对应的配置信息对应的索引发送给终端。
  5. 根据权利要求2所述的方法，其中，所述从所述预设的DMRS配置表中，获取符合终端的配置条件的配置信息对应的索引的步骤，包括：
    从所述预设的DMRS配置表中，获取包括的多点传输的传输点数目与所述终端的传输点数目相匹配、且总端口数目不超过所述终端所支持的总端口数目的配置信息对应的索引。
  6. 根据权利要求5所述的方法，其中，所述DMRS配置表中还包括：为每个传输点分配的端口号以及端口数；
    其中，不同传输点的端口号中的任意两个端口号为非码分复用且非时域 正交码。
  7. 根据权利要求1所述的方法，其中，所述通过下行控制信息，将所述索引发送给终端的步骤，包括：
    通过下行控制信息，将所述索引以及用于指示所述索引对应的传输点的传输点类型的指示信息发送给终端；所述传输点类型为单点传输或多点传输。
  8. 根据权利要求1所述的方法，其中，所述索引包括一级索引以及与所述一级索引对应的二级索引；
    所述一级索引为与所述DMRS配置表中的总端口数目相关联的索引；
    所述二级索引为与所述DMRS配置表中的端口号相关联的索引。
  9. 根据权利要求1所述的方法，其中，所述通过下行控制信息，将所述索引发送给终端的步骤，包括：
    将所述索引封装在下行控制信息的预设字段中，通过所述下行控制信息，将所述索引发送给终端；或
    在下行控制信息中为所述索引添加预设字段，通过所述下行控制信息，将所述索引发送给终端。
  10. 根据权利要求1所述的方法，其中，所述通过下行控制信息，将所述索引发送给终端的步骤，包括：
    将所述索引以预设的字符格式封装在下行控制信息的预设字段，通过所述下行控制信息，将所述索引发送给终端。
  11. 一种控制信息的接收方法，应用于终端，并且包括：
    获取下行控制信息中携带的物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引；以及
    查找所述DMRS配置表中所述索引所指示的配置信息。
  12. 根据权利要求11所述的方法，其中，所述查找所述DMRS配置表中所述索引所指示的配置信息的步骤，包括：
    确定所述索引所对应的传输点的传输点类型，所述传输点类型包括单点传输以及多点传输；以及
    从所述预设的DMRS配置表中，查找所述索引的所对应的传输点的传输点类型下，所述索引所指示的配置信息。
  13. 根据权利要求12所述的方法，其中，所述从所述预设的DMRS配置表中，查找所述索引所对应的传输点的传输点类型下，所述索引所指示的配置信息的步骤，包括：
    当所述索引的传输点类型为单点传输时，从所述预设的DMRS配置表中，查找单点传输的类型下，每个所述索引所指示的单点传输的传输点所对应的端口数目以及端口号。
  14. 根据权利要求12所述的方法，其中，所述从所述预设的DMRS配置表中，查找所述索引所对应的传输点的传输点类型下，所述索引所指示的配置信息的步骤，包括：
    当所述传输点类型为多点传输时，从所述预设的DMRS配置表中，查找多点传输的类型下，所述索引所指示的多点传输的传输点数目、每个传输点所支持的端口数目。
  15. 根据权利要求12所述的方法，其中，所述确定所述索引所对应的传输点的传输点类型的步骤，包括：
    根据所述下行指示信息中携带的用于指示所述索引对应的传输点的传输点类型的指示信息，确定所述索引所对应的传输点的传输点类型；或
    根据所述下行指示信息中携带的准共基站信息，确定所述索引所对应的传输点的传输点类型。
  16. 根据权利要求14所述的方法，其中，所述DMRS配置表中还包括：为每个传输点分配的端口号以及端口数；
    其中，不同传输点的端口号中的任意两个端口号为非码分复用且非时域正交码。
  17. 根据权利要求11所述的方法，其中，所述索引包括一级索引以及与所述一级索引对应的二级索引；
    所述一级索引为与所述DMRS配置表中的总端口数目相关联的索引；
    所述二级索引为与所述DMRS配置表中的端口号相关联的索引。
  18. 根据权利要求17所述的方法，其中，所述查找所述DMRS配置表中所述索引所指示的配置信息的步骤，包括：
    查找所述DMRS配置表中，所述一级索引对应的二级索引；
    查找所述DMRS配置表中，所述二级索引所指示的配置信息。
  19. 根据权利要求11所述的方法，其中，所述获取下行控制信息中携带的物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引的步骤，包括：
    在下行控制信息的预设字段中，获取物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引；或
    在下行控制信息中，获取添加有预设字段的字节，所述添加有预设字段的字节为物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引。
  20. 根据权利要求11所述的方法，其中，所述获取下行控制信息中携带的物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引的步骤，包括：
    在下行控制信息的预设字段，获取预设的字符格式的字段，所述预设的字符格式的字段为物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引。
  21. 一种基站，包括：
    索引获取模块，用于获取物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引；以及
    索引发送模块，用于通过下行控制信息，将所述索引发送给终端。
  22. 根据权利要求21所述的基站，其中，所述索引获取模块包括：
    获取子模块，用于从所述预设的DMRS配置表中，获取符合终端的配置条件的配置信息对应的索引；所述配置信息包括总端口数目以及总端口号；
    所述配置条件包括所述终端当前支持的传输点数目以及每个传输点所支持的端口数目。
  23. 根据权利要求22所述的基站，其中，所述获取子模块包括：
    单传输点获取单元，用于从所述预设的DMRS配置表中，获取与终端当前支持的单点传输的每个传输点相匹配的配置信息对应的索引；其中，每个所述配置信息中包括的总端口数目不超过与该配置信息对应的传输点所支持的端口数目。
  24. 根据权利要求23所述的基站，其中，所述索引发送模块包括：
    第一发送子模块，用于通过下行控制信息，将所述终端当前支持的每个传输点所对应的配置信息对应的索引发送给终端。
  25. 根据权利要求22所述的基站，其中，所述获取子模块包括：
    多传输点获取单元，用于从所述预设的DMRS配置表中，获取包括的多点传输的传输点数目与所述终端的传输点数目相匹配、且总端口数目不超过所述终端所支持的总端口数目的配置信息对应的索引。
  26. 根据权利要求25所述的基站，其中，所述DMRS配置表中还包括：为每个传输点分配的端口号以及端口数；
    其中，不同传输点的端口号中的任意两个端口号为非码分复用且非时域正交码。
  27. 根据权利要求21所述的基站，其中，所述索引发送模块包括：
    第二发送子模块，用于通过下行控制信息，将所述索引以及用于指示所述索引对应的传输点的传输点类型的指示信息发送给终端；所述传输点类型为单点传输或多点传输。
  28. 根据权利要求21所述的基站，其中，所述索引包括一级索引以及与所述一级索引对应的二级索引；
    所述一级索引为与所述DMRS配置表中的总端口数目相关联的索引；
    所述二级索引为与所述DMRS配置表中的端口号相关联的索引。
  29. 根据权利要求21所述的基站，其中，所述索引发送模块包括：
    第三发送子模块，用于将所述索引封装在下行控制信息的预设字段中，通过所述下行控制信息，将所述索引发送给终端；或
    在下行控制信息中为所述索引添加预设字段，通过所述下行控制信息，将所述索引发送给终端。
  30. 根据权利要求21所述的基站，其中，所述索引发送模块包括：
    第四发送子模块，用于将所述索引以预设的字符格式封装在下行控制信息的预设字段，通过所述下行控制信息，将所述索引发送给终端。
  31. 一种终端，包括：
    获取模块，用于获取下行控制信息中携带的物理下行共享信道的解调参 考信号DMRS的配置信息在预设的DMRS配置表中的索引；以及
    查找模块，用于查找所述DMRS配置表中所述索引所指示的配置信息。
  32. 根据权利要求31所述的终端，其中，所述查找模块包括：
    类型确定子模块，用于确定所述索引所对应的传输点的传输点类型，所述传输点类型包括单点传输以及多点传输；以及
    信息查找子模块，用于从所述预设的DMRS配置表中，查找所述索引的所对应的传输点的传输点类型下，所述索引所指示的配置信息。
  33. 根据权利要求32所述的终端，其中，所述信息查找子模块包括：
    单传输点查找单元，用于当所述索引的传输点类型为单点传输时，从所述预设的DMRS配置表中，查找单点传输的类型下，每个所述索引所指示的单点传输的传输点所对应的端口数目以及端口号。
  34. 根据权利要求32所述的终端，其中，所述信息查找子模块包括：
    多传输点查找单元，用于当所述传输点类型为多点传输时，从所述预设的DMRS配置表中，查找多点传输的类型下，所述索引所指示的多点传输的传输点数目、每个传输点所支持的端口数目。
  35. 根据权利要求32所述的终端，其中，所述类型确定子模块包括：
    第一确定单元，用于根据所述下行指示信息中携带的用于指示所述索引对应的传输点的传输点类型的指示信息，确定所述索引所对应的传输点的传输点类型；或
    第二确定单元，用于根据所述下行指示信息中携带的准共基站信息，确定所述索引所对应的传输点的传输点类型。
  36. 根据权利要求34所述的终端，其中，所述DMRS配置表中还包括：为每个传输点分配的端口号以及端口数；
    其中，不同传输点的端口号中的任意两个端口号为非码分复用且非时域正交码。
  37. 根据权利要求31所述的终端，其中，所述索引包括一级索引以及与所述一级索引对应的二级索引；
    所述一级索引为与所述DMRS配置表中的总端口数目相关联的索引；
    所述二级索引为与所述DMRS配置表中的端口号相关联的索引。
  38. 根据权利要求37所述的终端，其中，所述查找模块包括：
    索引查找子模块，用于查找所述DMRS配置表中，所述一级索引对应的二级索引；
    查找所述DMRS配置表中，所述二级索引所指示的配置信息。
  39. 根据权利要求31所述的终端，其中，所述获取模块包括：
    第一获取子模块，用于在下行控制信息的预设字段中，获取物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引；
    或
    第二获取子模块，用于在下行控制信息中，获取添加有预设字段的字节，所述添加有预设字段的字节为物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引。
  40. 根据权利要求31所述的终端，其中，所述获取模块包括：
    第三获取子模块，用于在下行控制信息的预设字段，获取预设的字符格式的字段，所述预设的字符格式的字段为物理下行共享信道的解调参考信号DMRS的配置信息在预设的DMRS配置表中的索引。
  41. 一种基站，包括：
    第一存储器、第一处理器及存储在所述第一存储器上并可在所述第一处理器上运行的计算机程序；其中，所述第一处理器执行所述程序时实现根据权利要求1-10中任一项所述的方法。
  42. 一种计算机可读存储介质，其上存储有计算机程序，其中，该程序被处理器执行时实现根据权利要求1-10中任一项所述的方法。
  43. 一种终端，包括：
    第二存储器、第二处理器及存储在所述第二存储器上并可在所述第二处理器上运行的计算机程序；其中，所述第二处理器执行所述程序时实现根据权利要求11-20中任一项所述的方法。
  44. 一种计算机可读存储介质，其上存储有计算机程序，其中，该程序被处理器执行时实现根据权利要求11-20中任一项所述的方法。
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