Transmission method and device based on uplink transmission indication information

1. A data transmission method applied to a base station, comprising:

sending Sounding Reference Signal (SRS) resource configuration information for uplink channel quality measurement and configuration information of a transmission layer quantity, wherein the configuration information of the transmission layer quantity comprises the maximum quantity of transmission layers allowed to be transmitted by a terminal or a set of quantities of layers allowed to be transmitted by the terminal;

determining uplink transmission indication information;

determining a payload corresponding to the uplink transmission indication information according to the SRS resource configuration information and the configuration information of the transmission layer quantity;

sending the uplink transmission indication information to the terminal using the payload.

2. The method according to claim 1 , wherein determining the payload corresponding to the uplink transmission indication information according to the SRS resource configuration information and the configuration information of the transmission layer quantity, comprises one of following (i) to (v):

(i) determining the payload corresponding to the uplink transmission indication information according to one of a maximum quantity of antenna ports and a maximum quantity of transmission layers for uplink transmission allowed for the terminal and according to the SRS resource configuration information;

(ii) determining the payload corresponding to the uplink transmission indication information according to the maximum quantity of transmission layers allowed within a maximum uplink transmission capability of the terminal and according to the SRS resource configuration information;

(iii) determining the payload corresponding to the uplink transmission indication information according to a maximum quantity of layers in the configuration information of the transmission layer quantity and according to the SRS resource configuration information;

(iv) determining the payload corresponding to the uplink transmission indication information according to one or more elements in a layer quantity set indicated by the configuration information of the transmission layer quantity and according to the SRS resource configuration information;

(v) determining the payload corresponding to the uplink transmission indication information according to the quantity of elements in the layer quantity set indicated by the configuration information of the transmission layer quantity and according to the SRS resource configuration information.

3. The method according to claim 2 , wherein determining the payload corresponding to the uplink transmission indication information according to the SRS resource configuration information and the configuration information of the transmission layer quantity, further comprises:

sending payload determination manner indication information to the terminal by the base station,

wherein the payload determination manner indication information is instruction information indicating a determination manner for determining the payload corresponding to the uplink transmission indication information according to the SRS resource configuration information and the configuration information of the transmission layer quantity.

4. The method according to claim 1 , wherein determining the payload corresponding to the uplink transmission indication information according to the SRS resource configuration information and the configuration information of the transmission layer quantity, comprises:

measuring, by the base station, an SRS signal and selecting at least one of a Transmission Rank indicator (TRI), an SRS resource, and an SRS port according to a result of the measurement; and

determining the payload corresponding to the uplink transmission indication information according to at least one of the quantity of TRIs, the quantity of SRS ports, and the quantity of SRS resources selected by the base station and according to the SRS resource configuration information.

5. The method according to claim 1 , wherein the uplink transmission indication information comprises at least one of target indication information and mapping relationship information;

the target indication information comprises at least one of an SRS resource indicator (SRI), a Transmission Rank indicator (TRI), and indication information of an SRS port in a SRS resource;

the mapping relationship information comprises at least one of: order information of SRS resources, order information of SRS ports in the SRS resources, mapping relationship information between the SRS resources and reference signal ports, mapping relationship information between the SRS resources and layers, mapping relationship information between the SRS ports in the SRS resources and the reference signal ports, and mapping relationship information between the SRS port in the SRS resource and the layer.

6. The method according to claim 5 , wherein,

the mapping relationship information between the SRS resources and the reference signal ports comprises: the SRS resource and the reference signal port being sent using a same precoding matrix or the SRS resources and the reference signal ports being sent using a same precoding matrix; and/or

the mapping relationship information between the SRS resources and the layers comprises: the SRS resource and the layer being sent using a same precoding matrix, or the SRS resources and the layers being sent using a same precoding matrix; and/or

the mapping relationship information between the SRS ports and the reference signal ports comprises: the SRS port and reference signal being sent using the same precoding matrix, or the SRS ports and reference signals being sent using the same precoding matrix; and/or

the mapping relationship information between the SRS ports and the layers comprises: the SRS port and the layer being sent using the same precoding matrix, or the SRS ports and the layers being sent using the same precoding matrix.

7. The method according to claim 1 , further including:

making an agreement with the terminal on mapping relationship between the uplink transmission indication information and reference signal ports or mapping relationship between the uplink transmission indication information and layers or specifying in advance in a protocol mapping relationship between the uplink transmission indication information and reference signal ports or mapping relationship between the uplink transmission indication information and layers.

8. The method according to claim 1 , wherein determining the uplink transmission indication information comprises:

receiving an SRS signal sent by the terminal on the SRS resources; and

determining the uplink transmission indication information according to the SRS signal.

9. A data transmission method applied to a terminal, comprising:

receiving configuration information of a transmission layer quantity and Sounding Reference Signal (SRS) resource configuration information for uplink channel quality measurement sent by a base station;

sending an SRS signal on a configured SRS resource;

determining, according to the SRS resource configuration information and the configuration information of the transmission layer quantity, a payload corresponding to the uplink transmission indication information sent by the base station;

receiving uplink transmission indication information sent by the base station; and

acquiring a precoding matrix for uplink data transmission according to the uplink transmission indication information.

10. The method according to claim 9 , wherein determining, according to the SRS resource configuration information and the configuration information of the transmission layer quantity, the payload corresponding to the uplink transmission indication information sent by the base station, comprises one of the following (i) to (v):

(i) determining, according to one of a maximum quantity of antenna ports and a maximum quantity of transmission layers for uplink transmission allowed for the terminal and the SRS resource configuration information, the payload corresponding to the uplink transmission indication information sent by the base station;

(ii) determining, according to a maximum quantity of transmission layers allowed within a maximum uplink transmission capability of the terminal and the SRS resource configuration information, the payload corresponding to the uplink transmission indication information sent by the base station;

(iii) determining, according to a maximum quantity of layers in the configuration information of the transmission layer quantity and the SRS resource configuration information, the payload corresponding to the uplink transmission indication information sent by the base station;

(iv) determining, according to elements in a layer quantity set indicated by the configuration information of the transmission layer quantity and the SRS resource configuration information, the payload corresponding to the uplink transmission indication information sent by the base station;

(v) determining, according to the quantity of the elements in the layer quantity set indicated by the configuration information of the transmission layer quantity and the SRS resource configuration information, the payload corresponding to the uplink transmission indication information sent by the base station.

11. The method according to claim 9 , wherein acquiring the precoding matrix for uplink data transmission according to the uplink transmission indication information comprises:

decoding the uplink transmission indication information according to the payload, and acquiring the precoding matrix for uplink data transmission based on a result of the decoding.

12. The method according to claim 9 , wherein the uplink transmission indication information comprises at least one of target indication information and mapping relationship information;

the target indication information comprises at least one of an SRS resource indicator (SRI), a Transmission Rank indicator (TRI), and indication information of an SRS port in an SRS resource;

the mapping relationship information comprises at least one of: order information of SRS resources, order information of SRS ports in the SRS resources, mapping relationship information between SRS resources and reference signal ports, mapping relationship information between SRS resources and layers, mapping relationship information between SRS ports in the SRS resources and the reference signal ports, and mapping relationship information between the SRS ports in the SRS resource and layers.

13. The method according to claim 12 , wherein,

the mapping relationship information between the SRS resources and the reference signal ports comprises: the SRS resource and the reference signal port being sent using a same precoding matrix, or the SRS resources and the reference signal ports being sent using a same precoding matrix; and/or

the mapping relationship information between the SRS resources and the layers comprises: the SRS resource and the layer being sent using a same precoding matrix, or the SRS resources and the layers being sent using a same precoding matrix; and/or

the mapping relationship information between the SRS ports and the reference signal ports comprises: the SRS port and the reference signal being sent using a same precoding matrix, or the SRS ports and the reference signals being sent using a same precoding matrix; and/or

the mapping relationship information between the SRS ports and the layers comprises: the SRS port and the layer being sent using a same precoding matrix, or the SRS ports and the layers being sent using a same precoding matrix.

14. The method according to claim 13 , wherein acquiring the precoding matrix for uplink data transmission according to the uplink transmission indication information, comprises:

determining a precoding vector/matrix corresponding to each reference signal port according to the mapping relationship information between the SRS resources and the reference signal ports or the mapping relationship information between the SRS ports and the reference signal ports;

acquiring the precoding matrix for uplink data transmission according to the precoding vector/matrix corresponding to the each reference signal port.

15. The method according to claim 13 , wherein acquiring the precoding matrix for uplink data transmission according to the uplink transmission indication information, comprises:

determining a precoding vector/matrix corresponding to each layer according to the mapping relationship information between the SRS resource and the layer or the mapping relationship information between the SRS ports and the layers;

acquiring a precoding matrix for uplink data transmission according to the precoding vector/matrix corresponding to each layer.

16. The method according to claim 9 , further comprising:

making an agreement in advance with the base station on mapping relationship between the uplink transmission indication information and reference signal ports or mapping relationship between the uplink transmission indication information and layers or specifying in advance in a protocol mapping relationship between the uplink transmission indication information and reference signal ports or mapping relationship between the uplink transmission indication information and layers; or

receiving the mapping relationship between the uplink transmission indication information and the reference signal ports or the mapping relationship between the uplink transmission indication information and the layers sent by the base station.

17. The method according to claim 9 , further comprising:

receiving the uplink transmission indication information.

18. A base station, comprising:

a storage, a processor, a transceiver, and a computer program stored on the storage and executable by the processor; wherein when the processor executes the computer program, the processor implements steps in the method according to claim 1 .

19. A terminal, comprising:

a storage, a processor, a transceiver, and a computer program stored on the storage and executable by the processor; wherein when the processor executes the computer program, the processor implements steps in the method according to claim 9 .