Method and apparatus for transmitting dmrs

A method for receiving a demodulation reference signal (DMRS), comprising:

• receiving the DMRS by using a time-frequency resource in at least one resource unit, wherein,
• in each resource unit of the at least one resource unit, time-frequency resources that can be used for a DMRS corresponds to three DMRS port groups, wherein the three DMRS port groups comprise a first DMRS port group, a second DMRS port group, and a third DMRS port group;
• each DMRS port group comprises two DMRS ports, and a same time-frequency resource is multiplexed for the DMRS ports in each DMRS port group in a code division multiplexing (CDM) manner;
• wherein in each resource unit, a time-frequency resource corresponding to the first DMRS port group is subcarrier 0, subcarrier 1, subcarrier 6, and subcarrier 7 on a first symbol in time domain, a time-frequency resource corresponding to the second DMRS port group is subcarrier 2, subcarrier 3, subcarrier 8, and subcarrier 9 on the first symbol in time domain, a time-frequency resource corresponding to the third DMRS port group is subcarrier 4, subcarrier 5, subcarrier 10, and subcarrier 11 on the first symbol in time domain;
• or
• in each resource unit of the at least one resource unit, time-frequency resources that can be used for a DMRS corresponds to three DMRS port groups, wherein the three DMRS port groups comprise a first DMRS port group, a second DMRS port group, and a third DMRS port group;
• each DMRS port group comprises two DMRS ports, and a same time-frequency resource is multiplexed for the DMRS ports in each DMRS port group in a code division multiplexing (CDM) manner;
• wherein in each resource unit, a time-frequency resource corresponding to the first DMRS port group is subcarrier 0, subcarrier 1, subcarrier 6, and subcarrier 7 on a first symbol and a second symbol in time domain, a time-frequency resource corresponding to the second DMRS port group is subcarrier 2, subcarrier 3, subcarrier 8, and subcarrier 9 on the first symbol and the second symbol in time domain, a time-frequency resource corresponding to the third DMRS port group is subcarrier 4, subcarrier 5, subcarrier 10, and subcarrier 11 on the first symbol and the second symbol in time domain.

An indication method, comprising:

• sending indication information, wherein the indication information indicates a time-frequency resource used to carry a demodulation reference signal (DMRS) in at least one resource unit, wherein,
• in each resource unit of the at least one resource unit, time-frequency resources that can be used for a DMRS corresponds to three DMRS port groups, wherein the three DMRS port groups comprise a first DMRS port group, a second DMRS port group, and a third DMRS port group;
• each DMRS port group comprises two DMRS ports, and a same time-frequency resource is multiplexed for the DMRS ports in each DMRS port group in a code division multiplexing (CDM) manner;
• wherein in each resource unit, a time-frequency resource corresponding to the first DMRS port group is subcarrier 0, subcarrier 1, subcarrier 6, and subcarrier 7 on a first symbol in time domain, a time-frequency resource corresponding to the second DMRS port group is subcarrier 2, subcarrier 3, subcarrier 8, and subcarrier 9 on the first symbol in time domain, a time-frequency resource corresponding to the third DMRS port group is subcarrier 4, subcarrier 5, subcarrier 10, and subcarrier 11 on the first symbol in time domain;
• or
• in each resource unit of the at least one resource unit, time-frequency resources that can be used for a DMRS corresponds to three DMRS port groups, wherein the three DMRS port groups comprise a first DMRS port group, a second DMRS port group, and a third DMRS port group;
• each DMRS port group comprises two DMRS ports, and a same time-frequency resource is multiplexed for the DMRS ports in each DMRS port group in a code division multiplexing (CDM) manner;
• wherein in each resource unit, a time-frequency resource corresponding to the first DMRS port group is subcarrier 0, subcarrier 1, subcarrier 6, and subcarrier 7 on a first symbol and a second symbol in time domain, a time-frequency resource corresponding to the second DMRS port group is subcarrier 2, subcarrier 3, subcarrier 8, and subcarrier 9 on the first symbol and the second symbol in time domain, a time-frequency resource corresponding to the third DMRS port group is subcarrier 4, subcarrier 5, subcarrier 10, and subcarrier 11 on the first symbol and the second symbol in time domain.

A method for receiving indication information, comprising:

• receiving indication information, wherein the indication information indicates a time-frequency resource used to carry a demodulation reference signal (DMRS) in at least one resource unit, wherein,
• in each resource unit of the at least one resource unit, time-frequency resources that can be used for a DMRS corresponds to three DMRS port groups, wherein the three DMRS port groups comprise a first DMRS port group, a second DMRS port group, and a third DMRS port group;
• each DMRS port group comprises two DMRS ports, and a same time-frequency resource is multiplexed for the DMRS ports in each DMRS port group in a code division multiplexing (CDM) manner;
• wherein in each resource unit, a time-frequency resource corresponding to the first DMRS port group is subcarrier 0, subcarrier 1, subcarrier 6, and subcarrier 7 on a first symbol in time domain, a time-frequency resource corresponding to the second DMRS port group is subcarrier 2, subcarrier 3, subcarrier 8, and subcarrier 9 on the first symbol in time domain, a time-frequency resource corresponding to the third DMRS port group is subcarrier 4, subcarrier 5, subcarrier 10, and subcarrier 11 on the first symbol in time domain;
• or
• in each resource unit of the at least one resource unit, time-frequency resources that can be used for a DMRS corresponds to three DMRS port groups, wherein the three DMRS port groups comprise a first DMRS port group, a second DMRS port group, and a third DMRS port group;
• each DMRS port group comprises two DMRS ports, and a same time-frequency resource is multiplexed for the DMRS ports in each DMRS port group in a code division multiplexing (CDM) manner;
• wherein in each resource unit, a time-frequency resource corresponding to the first DMRS port group is subcarrier 0, subcarrier 1, subcarrier 6, and subcarrier 7 on a first symbol and a second symbol in time domain, a time-frequency resource corresponding to the second DMRS port group is subcarrier 2, subcarrier 3, subcarrier 8, and subcarrier 9 on the first symbol and the second symbol in time domain, a time-frequency resource corresponding to the third DMRS port group is subcarrier 4, subcarrier 5, subcarrier 10, and subcarrier 11 on the first symbol and the second symbol in time domain.

An apparatus for sending a demodulation reference signal (DMRS), comprising:

• at least one processor, and one or more memories coupled to the at least one processor and storing computer instructions for execution by the at least one processor to configure the apparatus for:
• sending the DMRS mapped on a time-frequency resource in at least one resource unit, wherein,
• in each resource unit of the at least one resource unit, time-frequency resources that can be used for a DMRS corresponds to three DMRS port groups, wherein the three DMRS port groups comprise a first DMRS port group, a second DMRS port group, and a third DMRS port group;
• each DMRS port group comprises two DMRS ports, and a same time-frequency resource is multiplexed for the DMRS ports in each DMRS port group in a code division multiplexing (CDM) manner;
• wherein in each resource unit, a time-frequency resource corresponding to the first DMRS port group is subcarrier 0, subcarrier 1, subcarrier 6, and subcarrier 7 on a first symbol in time domain, a time-frequency resource corresponding to the second DMRS port group is subcarrier 2, subcarrier 3, subcarrier 8, and subcarrier 9 on the first symbol in time domain, a time-frequency resource corresponding to the third DMRS port group is subcarrier 4, subcarrier 5, subcarrier 10, and subcarrier 11 on the first symbol in time domain;
• or
• in each resource unit of the at least one resource unit, time-frequency resources that can be used for a DMRS corresponds to three DMRS port groups, wherein the three DMRS port groups comprise a first DMRS port group, a second DMRS port group, and a third DMRS port group;
• each DMRS port group comprises two DMRS ports, and a same time-frequency resource is multiplexed for the DMRS ports in each DMRS port group in a code division multiplexing (CDM) manner;
• wherein in each resource unit, a time-frequency resource corresponding to the first DMRS port group is subcarrier 0, subcarrier 1, subcarrier 6, and subcarrier 7 on a first symbol and a second symbol in time domain, a time-frequency resource corresponding to the second DMRS port group is subcarrier 2, subcarrier 3, subcarrier 8, and subcarrier 9 on the first symbol and the second symbol in time domain, a time-frequency resource corresponding to the third DMRS port group is subcarrier 4, subcarrier 5, subcarrier 10, and subcarrier 11 on the first symbol and the second symbol in time domain.

An apparatus for receiving a demodulation reference signal (DMRS), comprising:

• at least one processor, and one or more memories coupled to the at least one processor and storing computer instructions for execution by the at least one processor to configure the apparatus for:
• receiving the DMRS by using a time-frequency resource in at least one resource unit, wherein,
• in each resource unit of the at least one resource unit, time-frequency resources that can be used for a DMRS corresponds to three DMRS port groups, wherein the three DMRS port groups comprise a first DMRS port group, a second DMRS port group, and a third DMRS port group;
• each DMRS port group comprises two DMRS ports, and a same time-frequency resource is multiplexed for the DMRS ports in each DMRS port group in a code division multiplexing (CDM) manner;
• wherein in each resource unit, a time-frequency resource corresponding to the first DMRS port group is subcarrier 0, subcarrier 1, subcarrier 6, and subcarrier 7 on a first symbol in time domain, a time-frequency resource corresponding to the second DMRS port group is subcarrier 2, subcarrier 3, subcarrier 8, and subcarrier 9 on the first symbol in time domain, a time-frequency resource corresponding to the third DMRS port group is subcarrier 4, subcarrier 5, subcarrier 10, and subcarrier 11 on the first symbol in time domain;
• or
• in each resource unit of the at least one resource unit, time-frequency resources that can be used for a DMRS corresponds to three DMRS port groups, wherein the three DMRS port groups comprise a first DMRS port group, a second DMRS port group, and a third DMRS port group;
• each DMRS port group comprises two DMRS ports, and a same time-frequency resource is multiplexed for the DMRS ports in each DMRS port group in a code division multiplexing (CDM) manner;
• wherein in each resource unit, a time-frequency resource corresponding to the first DMRS port group is subcarrier 0, subcarrier 1, subcarrier 6, and subcarrier 7 on a first symbol and a second symbol in time domain, a time-frequency resource corresponding to the second DMRS port group is subcarrier 2, subcarrier 3, subcarrier 8, and subcarrier 9 on the first symbol and the second symbol in time domain, a time-frequency resource corresponding to the third DMRS port group is subcarrier 4, subcarrier 5, subcarrier 10, and subcarrier 11 on the first symbol and the second symbol in time domain.

An indication apparatus, comprising:

• at least one processor, and one or more memories coupled to the at least one processor and storing computer instructions for execution by the at least one processor to configure the apparatus for:
• sending indication information, wherein the indication information indicates a time-frequency resource used to carry a demodulation reference signal (DMRS) in at least one resource unit, wherein,
• in each resource unit of the at least one resource unit, time-frequency resources that can be used for a DMRS corresponds to three DMRS port groups, wherein the three DMRS port groups comprise a first DMRS port group, a second DMRS port group, and a third DMRS port group;
• each DMRS port group comprises two DMRS ports, and a same time-frequency resource is multiplexed for the DMRS ports in each DMRS port group in a code division multiplexing (CDM) manner;
• wherein in each resource unit, a time-frequency resource corresponding to the first DMRS port group is subcarrier 0, subcarrier 1, subcarrier 6, and subcarrier 7 on a first symbol in time domain, a time-frequency resource corresponding to the second DMRS port group is subcarrier 2, subcarrier 3, subcarrier 8, and subcarrier 9 on the first symbol in time domain, a time-frequency resource corresponding to the third DMRS port group is subcarrier 4, subcarrier 5, subcarrier 10, and subcarrier 11 on the first symbol in time domain;
• or
• in each resource unit of the at least one resource unit, time-frequency resources that can be used for a DMRS corresponds to three DMRS port groups, wherein the three DMRS port groups comprise a first DMRS port group, a second DMRS port group, and a third DMRS port group;
• each DMRS port group comprises two DMRS ports, and a same time-frequency resource is multiplexed for the DMRS ports in each DMRS port group in a code division multiplexing (CDM) manner;
• wherein in each resource unit, a time-frequency resource corresponding to the first DMRS port group is subcarrier 0, subcarrier 1, subcarrier 6, and subcarrier 7 on a first symbol and a second symbol in time domain, a time-frequency resource corresponding to the second DMRS port group is subcarrier 2, subcarrier 3, subcarrier 8, and subcarrier 9 on the first symbol and the second symbol in time domain, a time-frequency resource corresponding to the third DMRS port group is subcarrier 4, subcarrier 5, subcarrier 10, and subcarrier 11 on the first symbol and the second symbol in time domain.

An apparatus for receiving indication information, comprising:

• at least one processor, and one or more memories coupled to the at least one processor and storing computer instructions for execution by the at least one processor to configure the apparatus for:
• receiving indication information, wherein the indication information indicates a time-frequency resource used to carry a demodulation reference signal (DMRS) in at least one resource unit, wherein,
• in each resource unit of the at least one resource unit, time-frequency resources that can be used for a DMRS corresponds to three DMRS port groups, wherein the three DMRS port groups comprise a first DMRS port group, a second DMRS port group, and a third DMRS port group;
• each DMRS port group comprises two DMRS ports, and a same time-frequency resource is multiplexed for the DMRS ports in each DMRS port group in a code division multiplexing (CDM) manner;
• wherein in each resource unit, a time-frequency resource corresponding to the first DMRS port group is subcarrier 0, subcarrier 1, subcarrier 6, and subcarrier 7 on a first symbol in time domain, a time-frequency resource corresponding to the second DMRS port group is subcarrier 2, subcarrier 3, subcarrier 8, and subcarrier 9 on the first symbol in time domain, a time-frequency resource corresponding to the third DMRS port group is subcarrier 4, subcarrier 5, subcarrier 10, and subcarrier 11 on the first symbol in time domain;
• or
• in each resource unit of the at least one resource unit, time-frequency resources that can be used for a DMRS corresponds to three DMRS port groups, wherein the three DMRS port groups comprise a first DMRS port group, a second DMRS port group, and a third DMRS port group;
• each DMRS port group comprises two DMRS ports, and a same time-frequency resource is multiplexed for the DMRS ports in each DMRS port group in a code division multiplexing (CDM) manner;
• wherein in each resource unit, a time-frequency resource corresponding to the first DMRS port group is subcarrier 0, subcarrier 1, subcarrier 6, and subcarrier 7 on a first symbol and a second symbol in time domain, a time-frequency resource corresponding to the second DMRS port group is subcarrier 2, subcarrier 3, subcarrier 8, and subcarrier 9 on the first symbol and the second symbol in time domain, a time-frequency resource corresponding to the third DMRS port group is subcarrier 4, subcarrier 5, subcarrier 10, and subcarrier 11 on the first symbol and the second symbol in time domain.

A non-transitory computer-readable storage medium, wherein the non-transitory computer-readable storage medium stores computer instructions for being executed by at least one processor to perform operations comprising:

• sending the DMRS mapped on a time-frequency resource in at least one resource unit, wherein,
• in each resource unit of the at least one resource unit, time-frequency resources that can be used for a DMRS corresponds to three DMRS port groups, wherein the three DMRS port groups comprise a first DMRS port group, a second DMRS port group, and a third DMRS port group;
• each DMRS port group comprises two DMRS ports, and a same time-frequency resource is multiplexed for the DMRS ports in each DMRS port group in a code division multiplexing (CDM) manner;
• wherein in each resource unit, a time-frequency resource corresponding to the first DMRS port group is subcarrier 0, subcarrier 1, subcarrier 6, and subcarrier 7 on a first symbol in time domain, a time-frequency resource corresponding to the second DMRS port group is subcarrier 2, subcarrier 3, subcarrier 8, and subcarrier 9 on the first symbol in time domain, a time-frequency resource corresponding to the third DMRS port group is subcarrier 4, subcarrier 5, subcarrier 10, and subcarrier 11 on the first symbol in time domain;
• or
• in each resource unit of the at least one resource unit, time-frequency resources that can be used for a DMRS corresponds to three DMRS port groups, wherein the three DMRS port groups comprise a first DMRS port group, a second DMRS port group, and a third DMRS port group;
• each DMRS port group comprises two DMRS ports, and a same time-frequency resource is multiplexed for the DMRS ports in each DMRS port group in a code division multiplexing (CDM) manner;
• wherein in each resource unit, a time-frequency resource corresponding to the first DMRS port group is subcarrier 0, subcarrier 1, subcarrier 6, and subcarrier 7 on a first symbol and a second symbol in time domain, a time-frequency resource corresponding to the second DMRS port group is subcarrier 2, subcarrier 3, subcarrier 8, and subcarrier 9 on the first symbol and the second symbol in time domain, a time-frequency resource corresponding to the third DMRS port group is subcarrier 4, subcarrier 5, subcarrier 10, and subcarrier 11 on the first symbol and the second symbol in time domain.

A non-transitory computer-readable storage medium, wherein the non-transitory computer-readable storage medium stores computer instructions for being executed by at least one processor to perform operations comprising:

• receiving the DMRS by using a time-frequency resource in at least one resource unit, wherein,
• in each resource unit of the at least one resource unit, time-frequency resources that can be used for a DMRS corresponds to three DMRS port groups, wherein the three DMRS port groups comprise a first DMRS port group, a second DMRS port group, and a third DMRS port group;
• each DMRS port group comprises two DMRS ports, and a same time-frequency resource is multiplexed for the DMRS ports in each DMRS port group in a code division multiplexing (CDM) manner;
• wherein in each resource unit, a time-frequency resource corresponding to the first DMRS port group is subcarrier 0, subcarrier 1, subcarrier 6, and subcarrier 7 on a first symbol in time domain, a time-frequency resource corresponding to the second DMRS port group is subcarrier 2, subcarrier 3, subcarrier 8, and subcarrier 9 on the first symbol in time domain, a time-frequency resource corresponding to the third DMRS port group is subcarrier 4, subcarrier 5, subcarrier 10, and subcarrier 11 on the first symbol in time domain;
• or
• in each resource unit of the at least one resource unit, time-frequency resources that can be used for a DMRS corresponds to three DMRS port groups, wherein the three DMRS port groups comprise a first DMRS port group, a second DMRS port group, and a third DMRS port group;
• each DMRS port group comprises two DMRS ports, and a same time-frequency resource is multiplexed for the DMRS ports in each DMRS port group in a code division multiplexing (CDM) manner;
• wherein in each resource unit, a time-frequency resource corresponding to the first DMRS port group is subcarrier 0, subcarrier 1, subcarrier 6, and subcarrier 7 on a first symbol and a second symbol in time domain, a time-frequency resource corresponding to the second DMRS port group is subcarrier 2, subcarrier 3, subcarrier 8, and subcarrier 9 on the first symbol and the second symbol in time domain, a time-frequency resource corresponding to the third DMRS port group is subcarrier 4, subcarrier 5, subcarrier 10, and subcarrier 11 on the first symbol and the second symbol in time domain.

A non-transitory computer-readable storage medium, wherein the non-transitory computer-readable storage medium stores computer instructions for being executed by at least one processor to perform operations comprising:

• sending indication information, wherein the indication information indicates a time-frequency resource used to carry a demodulation reference signal (DMRS) in at least one resource unit, wherein,
• in each resource unit of the at least one resource unit, time-frequency resources that can be used for a DMRS corresponds to three DMRS port groups, wherein the three DMRS port groups comprise a first DMRS port group, a second DMRS port group, and a third DMRS port group;
• each DMRS port group comprises two DMRS ports, and a same time-frequency resource is multiplexed for the DMRS ports in each DMRS port group in a code division multiplexing (CDM) manner;
• wherein in each resource unit, a time-frequency resource corresponding to the first DMRS port group is subcarrier 0, subcarrier 1, subcarrier 6, and subcarrier 7 on a first symbol in time domain, a time-frequency resource corresponding to the second DMRS port group is subcarrier 2, subcarrier 3, subcarrier 8, and subcarrier 9 on the first symbol in time domain, a time-frequency resource corresponding to the third DMRS port group is subcarrier 4, subcarrier 5, subcarrier 10, and subcarrier 11 on the first symbol in time domain;
• or
• in each resource unit of the at least one resource unit, time-frequency resources that can be used for a DMRS corresponds to three DMRS port groups, wherein the three DMRS port groups comprise a first DMRS port group, a second DMRS port group, and a third DMRS port group;
• each DMRS port group comprises two DMRS ports, and a same time-frequency resource is multiplexed for the DMRS ports in each DMRS port group in a code division multiplexing (CDM) manner;
• wherein in each resource unit, a time-frequency resource corresponding to the first DMRS port group is subcarrier 0, subcarrier 1, subcarrier 6, and subcarrier 7 on a first symbol and a second symbol in time domain, a time-frequency resource corresponding to the second DMRS port group is subcarrier 2, subcarrier 3, subcarrier 8, and subcarrier 9 on the first symbol and the second symbol in time domain, a time-frequency resource corresponding to the third DMRS port group is subcarrier 4, subcarrier 5, subcarrier 10, and subcarrier 11 on the first symbol and the second symbol in time domain.

A non-transitory computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions for being executed by at least one processor to perform operations comprising:

• receiving indication information, wherein the indication information indicates a time-frequency resource used to carry a demodulation reference signal (DMRS) in at least one resource unit, wherein,
• in each resource unit of the at least one resource unit, time-frequency resources that can be used for a DMRS corresponds to three DMRS port groups, wherein the three DMRS port groups comprise a first DMRS port group, a second DMRS port group, and a third DMRS port group;
• each DMRS port group comprises two DMRS ports, and a same time-frequency resource is multiplexed for the DMRS ports in each DMRS port group in a code division multiplexing (CDM) manner;
• wherein in each resource unit, a time-frequency resource corresponding to the first DMRS port group is subcarrier 0, subcarrier 1, subcarrier 6, and subcarrier 7 on a first symbol in time domain, a time-frequency resource corresponding to the second DMRS port group is subcarrier 2, subcarrier 3, subcarrier 8, and subcarrier 9 on the first symbol in time domain, a time-frequency resource corresponding to the third DMRS port group is subcarrier 4, subcarrier 5, subcarrier 10, and subcarrier 11 on the first symbol in time domain;
• or
• in each resource unit of the at least one resource unit, time-frequency resources that can be used for a DMRS corresponds to three DMRS port groups, wherein the three DMRS port groups comprise a first DMRS port group, a second DMRS port group, and a third DMRS port group;
• each DMRS port group comprises two DMRS ports, and a same time-frequency resource is multiplexed for the DMRS ports in each DMRS port group in a code division multiplexing (CDM) manner;
• wherein in each resource unit, a time-frequency resource corresponding to the first DMRS port group is subcarrier 0, subcarrier 1, subcarrier 6, and subcarrier 7 on a first symbol and a second symbol in time domain, a time-frequency resource corresponding to the second DMRS port group is subcarrier 2, subcarrier 3, subcarrier 8, and subcarrier 9 on the first symbol and the second symbol in time domain, a time-frequency resource corresponding to the third DMRS port group is subcarrier 4, subcarrier 5, subcarrier 10, and subcarrier 11 on the first symbol and the second symbol in time domain.