US-12626588-B2 - Information transmission method and information transmission apparatus

US12626588B2US 12626588 B2US12626588 B2US 12626588B2US-12626588-B2

Abstract

This application provides an information transmission method and apparatus, relates to interference processing of a cooperative radar, and is applicable to internet of vehicles scenarios, such as a vehicle-to-everything (V2X) scenario, a long term evolution-vehicle (LTE-V) scenario, and a vehicle-to-vehicle (V2V) scenario. Therefore, information related to a transmit power can be transmitted through an interface of a radar detection apparatus, and a capability of an automated driving system or an advanced driver assistant system (ADAS) is improved, to adapt to a variable driving environment. The information transmission method includes: A first detection apparatus receives indication information, where the indication information is used to indicate the first detection apparatus to determine a first transmit power used for transmitting a radar signal; and the first detection apparatus determines the first transmit power based on the indication information.

Inventors

Sida Song
Sha Ma
Lei Gao
Lutao GAO

Assignees

Shenzhen Yinwang Intelligent Technologies Co., Ltd.

Dates

Publication Date: 20260512
Application Date: 20220318
Priority Date: 20190918

Claims (18)

1 . An information transmission method carried out by operation of a first detection device and a communications device, the method comprising: receiving, by the first detection device, indication information used to instruct the first detection device to determine a first transmit power used for transmitting a radar signal; determining, by the first detection device and in accordance with the indication information, the first transmit power; sending, by the first detection device, for use by the communications device: time-frequency resource information that is used to indicate a time-frequency resource used for transmitting the radar signal, and at least one additional piece of information taken from the group consisting of: power information used to indicate the first transmit power, and the indication information; receiving, by the communications device, the time-frequency resource information and the at least one additional piece of information; and broadcasting, by the communications device, the time-frequency resource information and the at least one additional piece of information.
2 . The method according to claim 1 , further comprising: transmitting, by the first detection device, the radar signal by using the first transmit power.
3 . The method according to claim 1 , wherein the determining the first transmit power based on the indication information comprises: determining, by the first detection device based on the indication information, to adjust a second transmit power to the first transmit power, wherein the second transmit power is a currently used transmit power.
4 . The method according to claim 3 , wherein the indication information indicates a status of a traffic light that is closest to a terminal in a current driving direction in which the first detection device is located, and the status of the traffic light comprises a red light, a yellow light, or a green light.
5 . The method according to claim 4 , wherein the determining to adjust the second transmit power to the first transmit power comprises: based on the status of the traffic light being the red light, determining, by the first detection device, to adjust the second transmit power to the first transmit power, wherein the first transmit power is less than or equal to the second transmit power; or based on the status of the traffic light being the green light, determining, by the first detection device, to adjust the second transmit power to the first transmit power, wherein the first transmit power is greater than or equal to the second transmit power.
6 . The method according to claim 3 , wherein the indication information indicates a congestion status of a road in a current driving direction of a terminal in which the first detection device is located, and the congestion status of the road comprises a congested state, a normal state, or a clear state.
7 . The method according to claim 6 , wherein the determining to adjust the second transmit power to the first transmit power comprises: based on the congestion status of the road being the congested state, determining, by the first detection device, to adjust the second transmit power to the first transmit power, wherein the first transmit power is less than or equal to the second transmit power; or based on the congestion status of the road being the clear state, determining, by the first detection device, to adjust the second transmit power to the first transmit power, wherein the first transmit power is greater than or equal to the second transmit power.
8 . An information transmission method carried out by a first device, a first detection device and a communications device, comprising: determining, by the first device, indication information used to instruct the first detection device to determine a first transmit power used for transmitting a radar signal; sending, by the first device, the indication information to the first detection device; and sending, by the first detection device, for use by the communications device: time-frequency resource information that is used to indicate a time-frequency resource used for transmitting the radar signal, and at least one additional piece of information taken from the group consisting of: power information used to indicate the first transmit power, and the indication information; receiving, by the communications device, the time-frequency resource information and the at least one additional piece of information; and broadcasting, by the communications device, the time-frequency resource information and the at least one additional piece of information.
9 . The method according to claim 8 , wherein the determining the indication information comprises: receiving, by the first device, the indication information sent by a second device.
10 . The method according to claim 8 , further comprising: receiving, by the first device, the power information sent by the first detection device based on the indication information, wherein the power information is used to indicate the first transmit power.
11 . The method according to claim 8 , wherein the indication information indicates a status of a traffic light that is closest to a terminal in a current driving direction in which the first detection device is located, and the status of the traffic light comprises a red light, a yellow light, or a green light.
12 . The method according to claim 11 , wherein the determining the indication information comprises: obtaining, by the first device, a first image, wherein the first image comprises the traffic light that is closest to the terminal in the current driving direction in which the first detection device is located; and determining, by the first device, the indication information based on the status of the traffic light in the first image.
13 . The method according to claim 8 , wherein the indication information indicates a congestion status of a road in a current driving direction of a terminal in which the first detection device is located, and the congestion status of the road comprises a congested state, a normal state, or a clear state.
14 . The method according to claim 13 , wherein the determining the power control information comprises: obtaining, by the first device, a second image, wherein the second image comprises another terminal in the current driving direction of the terminal in which the first detection device is located; determining, by the first device, the congestion status of the road based on the second image; and determining, by the first device, the indication information based on the congestion status of the road.
15 . An apparatus, comprising: a processor; a receiver; and a transmitter, wherein the receiver and the transmitter are coupled to the processor, and wherein: the receiver is configured to receive indication information, used to instruct the first detection apparatus to determine a first transmit power used for transmitting a radar signal; the processor is configured to determine, in accordance with the indication information, the first transmit power; and the transmitter is configured to send, for use by a communications device: time-frequency resource information that is used to indicate a time-frequency resource used for transmitting the radar signal, and at least one additional piece of information taken from the group consisting of: power information used to indicate the first transmit power, and the indication information; wherein the communications device is configured to broadcast the time-frequency resource information and the at least one additional piece of information.
16 . The apparatus according to claim 15 , wherein the transmitter is configured to transmit the radar signal by using the first transmit power.
17 . The apparatus according to claim 15 , wherein the processor is configured to determine, based on the indication information, to adjust a second transmit power to the first transmit power, wherein the second transmit power is a currently used transmit power.
18 . The apparatus according to claim 17 , wherein the indication information indicates a status of a traffic light that is closest to a terminal in a current driving direction in which the first detection device is located, and the status of the traffic light comprises a red light, a yellow light, or a green light.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application is a continuation of International Application No. PCT/CN2020/095041, filed on Jun. 9, 2020, which claims priority to Chinese Patent Application No. 201910883041.2, filed on Sep. 18, 2019. The disclosures of the aforementioned applications are hereby incorporated by reference in their entireties. TECHNICAL FIELD Embodiments of this application relate to the field of sensor technologies, and more specifically, to an information transmission method and an information transmission apparatus in the field of the sensor technologies. BACKGROUND With development of society and progress of science and technology, intelligent vehicles are entering the daily life of people. A sensor plays a very important role in self-driving or intelligent driving of an intelligent vehicle. As a key sensor in self-driving or intelligent driving, a radar detection apparatus is widely used in precision detection and distance detection in a self-driving process or an intelligent driving process. In the conventional technology, a radar detection apparatus transmits a radar signal by using a fixed transmit power. However, there are diversified and variable driving environments in a driving process of a vehicle including the radar detection apparatus. Consequently, a method in the conventional technology cannot adapt to a variable driving environment, and flexibility is relatively poor. SUMMARY This application provides an information transmission method and apparatus, so that a radar detection apparatus can transmit, through an interface, information related to a transmit power used for transmitting a radar signal, to adapt to a variable driving environment and implement relatively high flexibility. According to a first aspect, this application provides an information transmission method, and the method includes: A first detection apparatus receives indication information, where the indication information is used to indicate the first detection apparatus to determine a first transmit power used for transmitting a radar signal. The first detection apparatus determines the first transmit power based on the indication information. Optionally, when there is an interface between the first detection apparatus and a processing apparatus, the first detection apparatus may receive the indication information sent by the processing apparatus. Optionally, when there is an interface between the first detection apparatus and a communications apparatus, the first detection apparatus may receive the indication information sent by the communications apparatus. Optionally, when there is an interface between the first detection apparatus and a processing apparatus, there is an interface between the processing apparatus and a communications apparatus, and there is no interface between the first detection apparatus and the communications apparatus, the first detection apparatus may receive the indication information sent by the communications apparatus through the processing apparatus. According to the information transmission method provided in this embodiment of this application, there is an interface between the first detection apparatus and the processing apparatus or between the first detection apparatus and the communications apparatus for transmitting the indication information that is used to indicate the first transmit power used for transmitting the radar signal, so that the first detection apparatus can flexibly adjust, based on the indication information, a transmit power used for transmitting the radar signal, to adapt to a variable driving environment. In a possible implementation, the method further includes: The first detection apparatus transmits the radar signal by using the first transmit power. In a possible implementation, the method further includes: The first detection apparatus sends time-frequency resource information and at least one of power information and the indication information, where the power information is used to indicate the first transmit power, and the time-frequency resource information is used to indicate a time-frequency resource used for the radar signal. Optionally, the first detection apparatus may send the power information and the time-frequency resource information: or the first detection apparatus may send the indication information and the time-frequency resource information: or the first detection apparatus may send the power information, the indication information, and the time-frequency resource information. In a possible implementation, that the first detection apparatus sends time-frequency resource information and at least one of power information and the indication information includes: The first detection apparatus sends the time-frequency resource information and the at least one of the power information and the indication information to a communications apparatus, a processing apparatus, or a second detection apparatus. For example, when ther