IP Library › Granted Patent US 12684512

Granted Patent B2

US 12684512 · App. 18/534,179 · Granted Jul 14, 2026

Transmission and reception timing determination for interference measurement

Inventors: Xing Liu (Shenzhen, CN); Xianghui Han (Shenzhen, CN); Xingguang Wei (Shenzhen, CN); Shuaihua Kou (Shenzhen, CN)

Assignee: ZTE Corporation

H04W56/0045 H04L5/0051 H04W56/006

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Quick Facts

Patent No.: US 12684512
App. No.: 18/534,179
Granted: Jul 14, 2026
Kind: B2

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Abstract

In some arrangements, a first network node determines reception timing of a Reference Signal (RS). The RS is transmitted by a second network node at transmission timing. The first network node receives from the second network node the RS according to the reception timing.

Claims (115)

1 . A wireless communication method, comprising:

determining, by a first network node comprising a first wireless communication device, reception timing of a Reference Signal (RS) according to at least a time for transmitting a signal between the second network node and a base station in which the second network node is located, wherein the time for transmitting the signal is determined based at least in part on a cell radius of a cell of the base station in which the second network node is located, wherein the RS is transmitted by a second network node at transmission timing, wherein the second network node comprises a second wireless communication device;

receiving, by the first network node from the second network node, the RS according to the reception timing; and

measuring, by the first network node, the RS to determine interference of the second network node on the first network node.

2 . The method of claim 1 , wherein

operations of the second wireless communication device interferes with operations of the first wireless communication device.

3 . The method of claim 1 , wherein

the transmission timing is uplink transmission timing of uplink data; and

the reception timing at the first network node is different from downlink reception or detection timing of downlink data.

4 . The method of claim 3 , wherein the reception timing of the RS is determined according to at least one of:

a unidirectional transmission time between the second network node and the base station communicating with the second network node;

a distance between the second network node and the base station communicating with the second network node;

N TA offset of the cell of the base station in which the second network node is located;

a unidirectional transmission time between the first network node a base station communicating with the first network node; and

a maximum transmission delay or a reference transmission delay between the first network node and the second network node.

5 . The method of claim 4 , wherein the reception timing of the RS is determined as a time period before the downlink reception or detection timing for the normal downlink data, wherein the time period is calculated as T 0 +T 1 −T 3 +T 2 , wherein

T 0 comprises N TA offset of the cell of the base station in which the second network node is located;

T 1 comprises one of the unidirectional transmission time between the second network node and the base station communicating with the second network node; a transmission time determined according to the distance between the second network node and the base station communicating with the second network node; or the cell radius of a cell of the base station in which the second network node is located;

T 2 comprises the unidirectional transmission time between the first network node the base station communicating with the first network node; and

T 3 comprises the maximum transmission delay or the reference transmission delay between the first network node and the second network node.

6 . The method of claim 4 , wherein the reception timing of the RS is determined as a time period before downlink transmission timing of the base station communicating with the first network node, wherein the time period is calculated as T 0 −T 3 +T 2 , wherein

T 0 comprises N TA offset of the cell of the base station in which the second network node is located;

T 2 comprises the unidirectional transmission time between the first network node the base station communicating with the first network node; and

T 3 comprises the maximum transmission delay or the reference transmission delay between the first network node and the second network node.

7 . The method of claim 3 , wherein determining the reception timing of the RS comprises:

receiving, by the first network node, at least one parameter from a base station communicating with the first network node or a base station communicating with the second network node; and

determining, by the first network node, the reception timing of the RS according to the at least one of parameter.

8 . The method of claim 3 , wherein the reception timing of the RS is determined according to at least one of:

a unidirectional transmission time between the second network node and a base station communicating with the second network node;

a transmission time between the base station communicating with the first communication node and the base station communicating with the second communication node;

a distance between the base station communicating with the first communication node and the base station communicating with the second communication node;

N TA offset of the cell of the base station in which the second network node is located;

a unidirectional transmission time between the first network node a base station communicating with the first network node; and

a maximum transmission delay or a reference transmission delay between the first network node and the second network node.

9 . The method of claim 8 , wherein the reception timing of the RS is determined as a time period before downlink reception or detection timing for downlink data, wherein the time period is calculated as T 0 +T 1 −T 3 +T 2 , wherein

T 0 comprises N TA offset of the cell of the base station in which the second network node is located;

T 1 comprises the unidirectional transmission time between the first network node and the base station communicating with the first network node;

T 2 is determined according to one of the unidirectional transmission time between the second network node and the base station communicating with the first network node, the transmission time between the base station communicating with the first communication node and the base station communicating with the second communication node, the distance between the second network node and the base station communicating with the second network node, or the distance between the base station communicating with the first communication node and the base station communicating with the second communication node; and

T 3 comprises the maximum transmission delay or the reference transmission delay between the first network node and the second network node.

10 . The method of claim 8 , wherein the reception timing of the RS is determined as a time period before downlink transmission timing of the base station communicating with the first network node, wherein the time period is calculated as TO-T 3 +T 2 , wherein

T 0 comprises N TA offset of the cell of the base station in which the second network node is located;

T 3 comprises the maximum transmission delay or the reference transmission delay between the first network node and the second network node.

11 . The method of claim 1 , wherein

the reception timing is downlink reception timing of downlink data; and

the transmission timing is different from uplink transmission timing of uplink data.

12 . The method of claim 11 , wherein the transmission timing of the RS is determined by the second network node according to at least one of:

a unidirectional transmission time between the second network node and a base station communicating with the second network node;

a distance between the first network node and a base station communicating with the first network node;

a transmission time between the base station communicating with the first communication node and the base station communicating with the second communication node;

a distance between the base station communicating with the first communication node and the base station communicating with the second communication node;

N TA offset of the cell of the base station in which the second network node is located;

a unidirectional transmission time between the first network node a base station communicating with the first network node; and

a maximum transmission delay or a reference transmission delay between the first network node and the second network node.

13 . The method of claim 12 , wherein the reception timing of the RS is determined by the second network node as a time period after the uplink transmission timing for uplink data, wherein the time period is calculated as T 0 +T 1 −T 3 +T 2 , wherein

T 0 comprises N TA offset of the cell of the base station in which the second network node is located;

T 1 comprises the unidirectional transmission time between the second network node and the base station communicating with the second network node;

T 2 is determined according to one of the unidirectional transmission time between the first network node the base station communicating with the first network node, the distance between the first network node and the base station communicating with the first network node, the transmission time between the base station communicating with the first communication node and the base station communicating with the second communication node, or the distance between the base station communicating with the first communication node and the base station communicating with the second communication node; and

T 3 comprises the maximum transmission delay or the reference transmission delay between the first network node and the second network node.

14 . The method of claim 12 , wherein the reception timing of the RS is determined by the second network node as a time period after downlink reception timing for normal downlink data, wherein the time period is calculated as T 2 −T 1 −T 3 , wherein

⁢

;

T 1 comprises the unidirectional transmission time between the second network node and the base station communicating with the second network node;

T 3 comprises the maximum transmission delay or the reference transmission delay between the first network node and the second network node.

15 . The method of claim 12 , wherein the reception timing of the RS is determined by the second network node as a time period before downlink reception timing for normal downlink data, wherein the time period is calculated as T 1 +T 3 −T 2 , wherein

⁢

≤

⁢

;

T 1 comprises the unidirectional transmission time between the second network node and the base station communicating with the second network node;

T 3 comprises the maximum transmission delay or the reference transmission delay between the first network node and the second network node.

16 . The method of claim 11 , wherein the transmission timing of the RS is determined by the second network node according to at least one of:

a unidirectional transmission time between the second network node and a base station communicating with the second network node;

N TA offset of the cell of the base station in which the second network node is located;

a unidirectional transmission time between the first network node a base station communicating with the first network node;

a distance between the first network node and a base station communicating with the first network node;

a cell radius of a cell of the base station in which the first network node is located; and

a maximum transmission delay or a reference transmission delay between the first network node and the second network node.

17 . The method of claim 16 , wherein the reception timing of the RS is determined by the second network node as a time period after uplink transmission timing for normal uplink data, wherein the time period is calculated as T 0 +T 1 −T 3 +T 2 , wherein

T 0 comprises N TA offset of the cell of the base station in which the second network node is located;

T 1 comprises the unidirectional transmission time between the second network node and the base station communicating with the second network node;

T 3 comprises the maximum transmission delay or the reference transmission delay between the first network node and the second network node.

18 . A first network node comprising a first wireless communication device, comprising:

at least one processor configured to:

determine reception timing of a Reference Signal (RS), according to at least a time for transmitting a signal between the second network node and a base station in which the second network node is located, wherein the time for transmitting the signal is determined based at least in part on a cell radius of a cell of the base station in a the second network node is located, wherein the RS is transmitted by the second network node at a transmission timing, wherein the second network node comprises a second wireless communication device;

receive, via a receiver from the second network node, the RS according to the reception timing; and

measure the RS to determine interference of the second network node on the first network node.

19 . A wireless communication method, comprising:

send, by a second network node comprising a second wireless communication device, a Reference Signal (RS) according to a transmission timing,

wherein the RS is received by a first network node comprising a first wireless communication device according to a reception timing, and the reception timing is determined by the first network node according to at least a time for transmitting a signal between the second network node and a base station in which the second network node is located, wherein the time for transmitting the signal is determined based at least in part on a cell radius of a cell of the base station in which the second network node is located, wherein the first network node measures the RS to determine interference of the second network node on the first network node.

20 . A second network node comprising a second wireless communication device, comprising:

at least one processor configured to:

send, via a transmitter, a Reference Signal (RS) according to a transmission timing,

wherein the RS is received by a first network node comprising a first wireless communication device according to a reception timing, and the reception timing is determined by the first network node according to at least a time for transmitting a signal between the second network node and a base station in which the second network node is located, wherein the time for transmitting the signal is determined based at least in part on a cell radius of a cell of a base station in which the second network node is located, wherein the first network node measures the RS to determine interference of the second network node on the first network node.