Channel state information transmission method, channel state information reception method, signaling information transmission method, node, and medium

1 . A channel state information sending method, applied to a first communication node, comprising:

determining M downlink measurement reference signal resources, wherein M is a positive integer greater than 1, and the M downlink measurement reference signal resources are all channel measurement resources;

determining one set of channel state information according to the M downlink measurement reference signal resources; and

sending the one set of channel state information, wherein the determining the one set of channel state information according to the M downlink measurement reference signal resources comprises:

obtaining the one set of channel state information according to the M downlink measurement reference signal resources and M pieces of power information;

wherein the each piece of power information of the M pieces of power information comprises:

a power difference between energy per resource element (EPRE) corresponding to part of ports of a first physical downlink shared channel (PDSCH) and EPRE of one downlink measurement reference signal resource, wherein the part of the ports of the first PDSCH correspond to antenna ports of the one downlink measurement reference signal resource; and

wherein the one downlink measurement reference signal resource is one downlink measurement reference signal resource of the M downlink measurement reference signal resources, the each piece of power information of the M pieces of power information corresponds to a respective one downlink measurement reference signal resource of the M downlink measurement reference signal resources, and the M pieces of power information are comprised in received first signaling information or are determined according to a predetermined rule.

2 . The method according to claim 1 , wherein the determining the one set of channel state information according to the M downlink measurement reference signal resources comprises:

obtaining a transmission mode of a second PDSCH according to the M downlink measurement reference signal resources, M precoding matrices and a rank indicator (RI) value; and

determining the one set of channel state information according to the transmission mode of the second PDSCH.

3 . The method according to claim 2 , wherein the transmission mode of the second PDSCH satisfies the following formula:

[

y

1

3000

(

i

)

…

y

1

3000

+

P

1

-

1

(

i

)

y

2

3000

(

i

)

…

y

2

3000

+

P

2

-

1

(

i

)

…

y

M

3000

+

P

M

(

i

)

]

=

[

W

1

W

2

…

W

M

]

[

x

0

(

i

)

…

x

v

-

1

(

i

)

]

;

wherein

y

m

3000

+

l

 denotes a PDSCH symbol sent on antenna port 3000+l corresponding to channel state information reference signal (CSI-RS) resource m after precoding, wherein m=1, 2, . . . , M and l=0, 1, . . . , P m −1;

wherein P m denotes a number of antenna ports of the downlink measurement reference signal resource m when m=1, 2, . . . , M, W m denotes a precoding matrix corresponding to the downlink measurement reference signal resource m when m=1, 2, . . . , M, a dimension of W m is P m *v when m=1, 2, . . . , M, x a−1 (i) denotes layer data of an a-th layer of the second PDSCH, a=1, 2, . . . , v, and v denotes the RI value.

4 . The method according to claim 2 , wherein the one set of channel state information is obtained further according to M pieces of power information.

5 . The method according to claim 2 , wherein the M precoding matrices satisfy one of following characteristics:

elements in each column of each precoding matrix of the M precoding matrices are 1;

each precoding matrix of the M precoding matrices is an identity matrix;

the M precoding matrices are determined by the first communication node, wherein the first communication node is a communication node sending the one set of channel state information;

each precoding matrix of the M precoding matrices is obtained according to a respective one downlink measurement reference signal resource of the M downlink measurement reference signal resources; or

each precoding matrix of the M precoding matrices is obtained according to the M downlink measurement reference signal resources.

6 . The method according to claim 1 , wherein the obtaining the one set of channel state information according to the M downlink measurement reference signal resources and the M pieces of power information comprises:

obtaining a transmission mode of a third PDSCH according to the M downlink measurement reference signal resources and the M pieces of power information; and

obtaining the one set of channel state information according to the transmission mode of the third PDSCH, wherein the transmission mode of the third PDSCH satisfies the following formula:

[

y

1

3000

(

i

)

…

y

1

3000

+

P

1

-

1

(

i

)

y

2

3000

(

i

)

…

y

2

3000

+

P

2

-

1

(

i

)

…

y

M

3000

+

P

M

(

i

)

]

=

[

η

1

⁢

W

1

η

2

⁢

W

2

…

η

M

⁢

W

M

]

[

x

0

(

i

)

…

x

v

-

1

(

i

)

]

;

where

y

m

3000

+

l

 denotes a PDSCH symbol sent on antenna port 3000+l corresponding to CSI-RS resource m after precoding, wherein m=1, 2, . . . , M and l=0, 1, . . . , P m −1;

wherein P m denotes a number of antenna ports of downlink measurement reference signal resource m when m=1, 2, . . . , M, W m denotes a precoding matrix corresponding to the downlink measurement reference signal resource m when m=1, 2, . . . , M, a dimension of W m is P m *V, x v−1 (i) denotes layer data of a v-th layer of the third PDSCH when m=1, 2, . . . , M, and when i=1, 2, . . . , M, √{square root over (η i )} denotes a power difference between EPRE of the third PDSCH part on P i antenna ports of downlink measurement reference signal resource i and EPRE of downlink measurement reference signal resource i.

7 . The method according to claim 1 , wherein the determining the one set of channel state information according to the M downlink measurement reference signal resources comprises:

respectively obtaining one piece of channel measurement information according to each downlink measurement reference signal resource of the M downlink measurement reference signal resources;

obtaining a sum value of M pieces of channel measurement information, wherein the M pieces of channel measurement information correspond to the M downlink measurement reference signal resources on a one-to-one basis; and

obtaining the one set of channel state information according to the sum value of the M pieces of channel measurement information.

8 . The method according to claim 1 , wherein the one set of channel state information comprises at least one of:

a channel quality indicator (CQI), reference signal received power (RSRP), reference signal receiving quality (RSRQ), a signal-to-interference-plus-noise ratio (SINR), an RI, or a precoding matrix indicator (PMI).

9 . The method according to claim 1 , wherein the M downlink measurement reference signal resources satisfy at least one of following characteristics:

the M downlink measurement reference signal resources correspond to same RI layer data;

the M downlink measurement reference signal resources correspond to a same RI; or

any two precoding matrices of the M precoding matrices have a same number of columns;

wherein the RI is a positive integer greater than or equal to 1.

10 . A non-transitory storage medium storing a computer program which, when executed by a processor, implements the method according to claim 1 .

11 . A channel state information receiving method, applied to a second communication node, comprising:

sending M downlink measurement reference signal resources, wherein M is a positive integer greater than 1; and

receiving one set of channel state information sent by a first communication node;

wherein the one set of channel state information is determined by the first communication node according to the M downlink measurement reference signal resources;

wherein the one set of channel state information is determined by the first communication node according to the M downlink measurement reference signal resources and M pieces of power information;

wherein the method further comprises:

sending first signaling information, wherein the first signaling information comprises at least one piece of power information of the M pieces of power information;

wherein each piece of power information of the M pieces of power information comprises:

a power difference between energy per resource element (EPRE) corresponding to part of ports of a first physical downlink shared channel (PDSCH) and EPRE of one downlink measurement reference signal resource, wherein the part of the ports of the first PDSCH correspond to antenna ports of the one downlink measurement reference signal resource; and

wherein the one downlink measurement reference signal resource is one downlink measurement reference signal resource of the M downlink measurement reference signal resources, and each piece of power information of the M pieces of power information corresponds to a respective one downlink measurement reference signal resource of the M downlink measurement reference signal resources.

12 . The method according to claim 11 , wherein the one set of channel state information is determined by the first communication node according to a transmission mode of a second PDSCH, wherein the transmission mode of the second PDSCH is obtained by the first communication node according to the M downlink measurement reference signal resources, M precoding matrices corresponding to the M downlink measurement reference signal resources and a rank indicator (RI) value.

13 . The method according to claim 12 , wherein the M precoding matrices satisfy one of following characteristics:

elements in each column of each precoding matrix of the M precoding matrices are 1;

each precoding matrix of the M precoding matrices is an identity matrix;

the M precoding matrices are determined by the first communication node;

each precoding matrix of the M precoding matrices is obtained according to a respective one downlink measurement reference signal resource of the M downlink measurement reference signal resources; or

each precoding matrix of the M precoding matrices is obtained according to the M downlink measurement reference signal resources.

14 . The method as claimed in claim 12 , wherein the transmission mode of the second PDSCH satisfies the following formula:

[

y

1

3000

(

i

)

…

y

1

3000

+

P

1

-

1

(

i

)

y

2

3000

(

i

)

…

y

2

3000

+

P

2

-

1

(

i

)

…

y

M

3000

+

P

M

(

i

)

]

=

[

W

1

W

2

…

W

M

]

[

x

0

(

i

)

…

x

v

-

1

(

i

)

]

;

where

y

m

3000

+

l

 denotes a PDSCH symbol sent on antenna port 3000+l corresponding to channel state information reference signal, CSI-RS, resource m after precoding when m=1, 2, . . . , M and l=0, 1, . . . , P m −1;

wherein P m denotes a number of antenna ports of the downlink measurement reference signal resource m when m=1, 2, . . . , M, W m denotes a precoding matrix corresponding to the downlink measurement reference signal resource m when m=1, 2, . . . , M, a dimension of W m is P m *v when m=1, 2, . . . , M, x a−1 (i) denotes layer data of an a-th layer of the second PDSCH, a=1, 2, . . . , v, and v denotes the RI value;

wherein the set of channel state information is obtained according to M pieces of power information.

15 . The method according to claim 11 , further comprising:

sending a demodulation reference signal (DMRS) port to the first communication node according to the one set of channel state information, wherein the demodulation reference signal port and the M downlink measurement reference signal resources satisfy a quasi co-location relationship.

16 . A first communication node, comprising:

at least one processor which, when executed, implements a channel state information sending method, and the method comprises:

determining M downlink measurement reference signal resources, wherein M is a positive integer greater than 1, and the M downlink measurement reference signal resources are all channel measurement resources;

determining one set of channel state information according to the M downlink measurement reference signal resources; and

sending the one set of channel state information,

wherein the determining the one set of channel state information according to the M downlink measurement reference signal resources comprises:

obtaining the one set of channel state information according to the M downlink measurement reference signal resources and M pieces of power information;

wherein the each piece of power information of the M pieces of power information comprises:

a power difference between energy per resource element (EPRE) corresponding to part of ports of a physical downlink shared channel (PDSCH) and EPRE of one downlink measurement reference signal resource, wherein the part of the ports of the PDSCH correspond to antenna ports of the one downlink measurement reference signal resource; and

wherein the one downlink measurement reference signal resource is one downlink measurement reference signal resource of the M downlink measurement reference signal resources, the each piece of power information of the M pieces of power information corresponds to a respective one downlink measurement reference signal resource of the M downlink measurement reference signal resources, and the M pieces of power information are comprised in received first signaling information or are determined according to a predetermined rule.