METHOD AND DEVICE IN NODES USED FOR WIRELESS COMMUNICATION

1 . A first node for wireless communications, comprising:

a first transceiver, receiving a first information block and receiving a second information block, the first information block being used to determine a first RE set, the first RE set comprising at least one RE, and any RE in the first RE set being used for first-type reference signals; and

a first receiver, monitoring control channel candidates in a first control resource set, the first control resource set comprising multiple REs, and the first control resource set comprising at least one RE being used for second-type reference signals, the second-type reference signals and the first-type reference signals being two different types of reference signals, the second-type reference signals being used for demodulation of control channels;

wherein the second information block is used to determine a characteristic resource subset, the characteristic resource subset comprising multiple time-frequency units, any time-frequency unit comprised in the characteristic resource subset comprises multiple REs, and any RE comprised in the characteristic resource subset belongs to the first control resource set; the characteristic resource subset and the first RE set are in a relationship other than a characteristic relationship, the characteristic relationship being one of a first relationship or a second relationship; the first relationship includes that there exists at least one overlapping RE between only part of time-frequency units of the characteristic resource subset and the first RE set, while the second relationship includes that there exists at least one overlapping RE between the characteristic resource subset and the first RE set.

2 . The first node according to claim 1 , characterized in that the first information block comprises a first sub-information-block and a second sub-information-block, the first sub-information-block being used to determine a number of antenna ports of the first-type reference signals, the second sub-information-block being used to determine a frequency-domain location of REs comprised by the first RE set, and at least one of the number of the antenna ports of the first-type reference signals or the frequency-domain location of the REs comprised by the first RE set being used to determine the characteristic relationship between the first relationship or the second relationship.

3 . The first node according to claim 1 , characterized in that the second information block is used to determine precoding granularity of the first control resource set, and a number of the time-frequency units in the characteristic resource subset is related to the precoding granularity of the first control resource set.

4 . The first node according to claim 1 , characterized in that the first transceiver transmits a third information block; wherein the third information block is used to indicate a capability of the first node, and at least one of the capability of the first node or an index of the first control resource set is used to determine the characteristic relationship between the first relationship or the second relationship.

5 . The first node according to claim 1 , characterized in that the precoding granularity of the first control resource set refers to all contiguous RBs, and a number of non-contiguous RB subset(s) included in the first control resource set in frequency domain is no greater than a first threshold, the first threshold being a positive integer greater than 1; the first threshold is fixed, or the first threshold is related to whether the characteristic relationship is the first relationship or the second relationship.

6 . The first node according to f claim 1 , characterized in that the first node does not expect that there exists overlapping REs between only part of time-frequency units of the characteristic resource subset and the first RE set, or the first node does not expect that there exists any overlapping RE between the characteristic resource subset and the first RE set.

7 . The first node according to claim 1 , characterized in that the first transceiver receives a fourth information block; wherein a first quantity value is equal to a number of time-domain symbols occupied in time domain by the first control resource set, and a number of time-domain symbols occupied in time domain by the characteristic resource subset is equal to the first quantity value; the fourth information block is used to determine a target quantity set, the target quantity set including multiple quantity values, and the second information block is used to determine the first quantity value out of the target quantity set; the first quantity value is used to determine the characteristic relationship between the first relationship or the second relationship.

8 . A second node for wireless communications, comprising:

a second transceiver, transmitting a first information block and transmitting a second information block, the first information block being used to indicate a first RE set, the first RE set comprising at least one RE, and any RE in the first RE set being used for first-type reference signals; and

a first transmitter, transmitting control channel candidates in a first control resource set, the first control resource set comprising multiple REs, and the first control resource set comprising at least one RE being used for second-type reference signals, the second-type reference signals and the first-type reference signals being two different types of reference signals, the second-type reference signals being used for demodulation of control channels;

wherein the second information block is used to indicate a characteristic resource subset, the characteristic resource subset comprising multiple time-frequency units, any time-frequency unit comprised in the characteristic resource subset comprises multiple REs, and any RE comprised in the characteristic resource subset belongs to the first control resource set; the characteristic resource subset and the first RE set are in a relationship other than a characteristic relationship, the characteristic relationship being one of a first relationship or a second relationship; the first relationship includes that there exists at least one overlapping RE between only part of time-frequency units of the characteristic resource subset and the first RE set, while the second relationship includes that there exists at least one overlapping RE between the characteristic resource subset and the first RE set.

9 . The second node according to claim 8 , characterized in that the first information block comprises a first sub-information-block and a second sub-information-block, the first sub-information-block being used to determine a number of antenna ports of the first-type reference signals, the second sub-information-block being used to determine a frequency-domain location of REs comprised by the first RE set, and at least one of the number of the antenna ports of the first-type reference signals or the frequency-domain location of the REs comprised by the first RE set being used to determine the characteristic relationship between the first relationship or the second relationship.

10 . The second node according to claim 8 , characterized in that the second information block is used to determine precoding granularity of the first control resource set, and a number of the time-frequency units in the characteristic resource subset is related to the precoding granularity of the first control resource set.

11 . The second node according to claim 8 , characterized in that the second transceiver receives a third information block; wherein the third information block is used to indicate a capability of a transmitter of the third information block, and at least one of the capability of the transmitter of the third information block or an index of the first control resource set is used to determine the characteristic relationship between the first relationship or the second relationship.

12 . The second node according to claim 8 , characterized in that the precoding granularity of the first control resource set refers to all contiguous RBs, and a number of non-contiguous RB subset(s) included in the first control resource set in frequency domain is no greater than a first threshold, the first threshold being a positive integer greater than 1;

the first threshold is fixed, or the first threshold is related to whether the characteristic relationship is the first relationship or the second relationship.

13 . The second node according to claim 8 , characterized in that the second transceiver transmits a fourth information block; wherein a first quantity value is equal to a number of time-domain symbols occupied in time domain by the first control resource set, and a number of time-domain symbols occupied in time domain by the characteristic resource subset is equal to the first quantity value; the fourth information block is used to determine a target quantity set, the target quantity set including multiple quantity values, and the second information block is used to determine the first quantity value out of the target quantity set; the first quantity value is used to determine the characteristic relationship between the first relationship or the second relationship.

14 . A method in a first node for wireless communications, comprising:

receiving a first information block and receiving a second information block, the first information block being used to determine a first RE set, the first RE set comprising at least one RE, and any RE in the first RE set being used for first-type reference signals; and

monitoring control channel candidates in a first control resource set, the first control resource set comprising multiple REs, and the first control resource set comprising at least one RE being used for second-type reference signals, the second-type reference signals and the first-type reference signals being two different types of reference signals, the second-type reference signals being used for demodulation of control channels;

wherein the second information block is used to determine a characteristic resource subset, the characteristic resource subset comprising multiple time-frequency units, any time-frequency unit comprised in the characteristic resource subset comprises multiple REs, and any RE comprised in the characteristic resource subset belongs to the first control resource set; the characteristic resource subset and the first RE set are in a relationship other than a characteristic relationship, the characteristic relationship being one of a first relationship or a second relationship; the first relationship includes that there exists at least one overlapping RE between only part of time-frequency units of the characteristic resource subset and the first RE set, while the second relationship includes that there exists at least one overlapping RE between the characteristic resource subset and the first RE set.

15 . The method according to claim 14 , characterized in that the first information block comprises a first sub-information-block and a second sub-information-block, the first sub-information-block being used to determine a number of antenna ports of the first-type reference signals, the second sub-information-block being used to determine a frequency-domain location of REs comprised by the first RE set, and at least one of the number of the antenna ports of the first-type reference signals or the frequency-domain location of the REs comprised by the first RE set being used to determine the characteristic relationship between the first relationship or the second relationship.

16 . The method according to claim 14 , characterized in that the second information block is used to determine precoding granularity of the first control resource set, and a number of the time-frequency units in the characteristic resource subset is related to the precoding granularity of the first control resource set.

17 . The method according to claim 14 , characterized in comprising:

transmitting a third information block;

wherein the third information block is used to indicate a capability of the first node, and at least one of the capability of the first node or an index of the first control resource set is used to determine the characteristic relationship between the first relationship or the second relationship.

18 . The method according to claim 14 , characterized in that the precoding granularity of the first control resource set refers to all contiguous RBs, and a number of non-contiguous RB subset(s) included in the first control resource set in frequency domain is no greater than a first threshold, the first threshold being a positive integer greater than 1; the first threshold is fixed, or the first threshold is related to whether the characteristic relationship is the first relationship or the second relationship.

19 . The method according to claim 14 , characterized in that the first node does not expect that there exists overlapping REs between only part of time-frequency units of the characteristic resource subset and the first RE set, or the first node does not expect that there exists any overlapping RE between the characteristic resource subset and the first RE set.

20 . The method according to claim 14 , characterized in comprising:

receiving a fourth information block;

wherein a first quantity value is equal to a number of time-domain symbols occupied in time domain by the first control resource set, and a number of time-domain symbols occupied in time domain by the characteristic resource subset is equal to the first quantity value; the fourth information block is used to determine a target quantity set, the target quantity set including multiple quantity values, and the second information block is used to determine the first quantity value out of the target quantity set; the first quantity value is used to determine the characteristic relationship between the first relationship or the second relationship.