CN112911521B

CN112911521B - D2D communication-based intelligent monitoring method and system for sewage treatment plant

Info

Publication number: CN112911521B
Application number: CN202110143228.6A
Authority: CN
Inventors: 徐德成; 王欣; 吴辉; 史小雨
Original assignee: Beijing Dayuan Environmental Protection Technology Co ltd
Current assignee: Beijing Dayuan Environmental Protection Technology Co ltd
Priority date: 2021-02-02
Filing date: 2021-02-02
Publication date: 2022-01-21
Anticipated expiration: 2041-02-02
Also published as: CN112911521A

Abstract

The invention discloses an intelligent monitoring method of a sewage treatment plant based on D2D communication, which comprises the following steps: collecting monitoring information of a sewage treatment plant by a first mobile terminal and a second mobile terminal; receiving, by a first mobile terminal and a second mobile terminal, inter-device communication resource pool configuration information transmitted by a base station; in response to receiving the inter-device communication resource pool configuration information, broadcasting, by the first mobile terminal, a first resource occupancy indicator on a first symbol and a first set of subcarriers of a resource pool for inter-device communication; if the first mobile terminal occupies one symbol, the first mobile terminal sends monitoring information of the sewage treatment plant to a third mobile terminal on a first symbol and a second subcarrier set of a resource pool for carrying out inter-device communication; and responding to the received monitoring information of the sewage treatment plant, and sending the monitoring information of the sewage treatment plant to the base station by the third mobile terminal.

Description

D2D communication-based intelligent monitoring method and system for sewage treatment plant

Technical Field

The invention relates to the technical field of sewage treatment, in particular to an intelligent monitoring method and system of a sewage treatment plant based on D2D communication.

Background

The sewage treatment plant is an important component of urban construction, wherein, how to improve the monitoring efficiency of each operating device in the sewage treatment plant and how to timely perform a good communication function with a maintainer is a key direction of research of the sewage treatment plant.

Patent CN108862838A discloses an automatic control method for intelligent regeneration water plant, comprising the following steps: 1) sewage is pretreated through a coarse grating, a lift pump side control station and a fine grating control station in sequence; 2) after being treated by an SBR control station, the reclaimed water and the sludge are obtained; 3) conveying the reclaimed water to a water storage recovery tank; the sludge is subjected to concentration and dehydration treatment by a sludge concentration and dehydration machine pump station; 4) and the corresponding PLC monitors the corresponding abnormal working condition in real time and sends the detected condition to the central control center component.

Patent CN207362171U discloses a continuous pretreatment system for biogas, which comprises a desulfurization device, a primary filter, a gas generator, a water-biogas heat exchanger, a water chilling unit, an energy storage water tank, a roots blower, and a precision filter.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

Disclosure of Invention

The invention aims to provide an intelligent monitoring method and system for a sewage treatment plant based on D2D communication, which can overcome the defects of the prior art.

In order to achieve the purpose, the invention provides an intelligent monitoring method of a sewage treatment plant based on D2D communication, which comprises the following steps:

collecting monitoring information of a sewage treatment plant by a first mobile terminal and a second mobile terminal;

receiving, by a first mobile terminal and a second mobile terminal, inter-device communication resource pool configuration information sent by a base station, wherein the inter-device communication resource pool configuration information indicates, to the first mobile terminal, a resource pool for performing inter-device communication, wherein the resource pool for performing inter-device communication includes a plurality of symbols and a plurality of subbands;

broadcasting, by the first mobile terminal, a first resource occupancy indicator on a first symbol and a first set of subcarriers of a resource pool for inter-device communication in response to receiving the inter-device communication resource pool configuration information, wherein the first resource occupancy indicator is to indicate whether the first mobile terminal is to occupy one symbol or two symbols, while the first resource occupancy indicator is to indicate that the first mobile terminal is to occupy all subbands of the resource pool for inter-device communication;

if the first mobile terminal occupies one symbol, the first mobile terminal sends monitoring information of the sewage treatment plant to a third mobile terminal on a first symbol and a second subcarrier set of a resource pool for carrying out inter-device communication;

in response to receiving the monitoring information of the sewage treatment plant, the third mobile terminal sends the monitoring information of the sewage treatment plant to the base station;

in response to receiving the first resource occupation indicator, the second mobile terminal judges the time-frequency resource to be occupied by the first mobile terminal based on the first resource occupation indicator;

in response to determining that the first mobile terminal occupies the first symbol and all subbands of the resource pool used for inter-device communication, broadcasting, by the second mobile terminal, a second resource occupancy indicator on a second symbol of the resource pool used for inter-device communication and the first set of subcarriers, wherein the second symbol is a symbol immediately following the first symbol, the second resource occupancy indicator indicating whether the second mobile terminal will occupy one symbol or two symbols, while the second resource occupancy indicator indicates that the second mobile terminal will occupy all subbands of the resource pool used for inter-device communication.

In a preferred embodiment, the intelligent monitoring method of the sewage treatment plant based on the D2D communication comprises the following steps:

if the second mobile terminal occupies two symbols, the second mobile terminal sends monitoring information of the sewage treatment plant to a third mobile terminal on a second symbol and a second subcarrier set of a resource pool for performing inter-device communication, and simultaneously the second mobile terminal sends the monitoring information of the sewage treatment plant to the third mobile terminal on a third symbol of the resource pool for performing the inter-device communication and all subbands of the resource pool for performing the inter-device communication, wherein the third symbol is a symbol next to the second symbol;

after the monitoring information of the sewage treatment plant is sent to the third mobile terminal, the second mobile terminal judges whether the monitoring information of the sewage treatment plant needs to be sent to the third mobile terminal;

if the monitoring information of the sewage treatment plant is judged to be required to be sent to the third mobile terminal, the second mobile terminal broadcasts a third resource occupation indicator on a fourth symbol and a first subcarrier set of a resource pool for performing the inter-device communication, wherein the fourth symbol is a symbol next to the third symbol, the third resource occupation indicator is used for indicating whether the second mobile terminal occupies one symbol or two symbols, and the third resource occupation indicator is used for indicating that the second mobile terminal occupies all subbands of the resource pool for performing the inter-device communication;

and if the second mobile terminal occupies one symbol, the second mobile terminal sends the monitoring information of the sewage treatment plant to the third mobile terminal on a fourth symbol of a resource pool for performing the inter-device communication and a second subcarrier set.

in response to receiving the inter-device communication resource pool configuration information, broadcasting, by the first mobile terminal, a fourth resource occupancy indicator on the first symbol and the first set of subcarriers of the resource pool for inter-device communication, wherein the fourth resource occupancy indicator is used to indicate the number of symbols to be occupied by the first mobile terminal, and the first resource occupancy indicator is used to indicate subbands to be occupied by the first mobile terminal;

in response to sending the fourth resource occupancy indicator, sending, by the first mobile terminal, sewage treatment plant monitoring information to the third mobile terminal on the selected resource;

in response to receiving the fourth resource occupation indicator, the second mobile terminal judges the time-frequency resource to be occupied by the first mobile terminal based on the fourth resource occupation indicator;

if the first mobile terminal occupies four symbols and a first sub-band, broadcasting a fifth resource occupation indicator on a second symbol and a first sub-carrier set of a resource pool for performing inter-device communication by a second mobile terminal, wherein three OFDM symbols are arranged between the second symbol and the first symbol, the fifth resource occupation indicator is used for indicating the number of symbols to be occupied by the second mobile terminal, and the fifth resource occupation indicator is used for indicating the sub-band to be occupied by the second mobile terminal;

in response to sending the fifth resource occupancy indicator, sending, by the second mobile terminal, sewage treatment plant monitoring information to the third mobile terminal on the selected resource.

in response to determining that the first mobile terminal occupies the four symbols and the first sub-band, broadcasting, by the second mobile terminal, a sixth resource occupancy indicator on the first symbol and the second set of sub-carriers of the resource pool for inter-device communication, the sixth resource occupancy indicator being for indicating a number of symbols that the second mobile terminal will occupy, while the sixth resource occupancy indicator being for indicating a sub-band that the second mobile terminal will occupy;

in response to sending the sixth resource occupancy indicator, sending, by the second mobile terminal, sewage treatment plant monitoring information to the third mobile terminal on the selected resource;

in response to receiving the fourth resource occupancy indicator, the second mobile terminal judges the time-frequency resource to be occupied by the first mobile terminal based on the fourth resource occupancy indicator, wherein the second mobile terminal has generated monitoring information of a high-priority sewage treatment plant to be sent to the third mobile terminal before receiving the fourth resource occupancy indicator;

broadcasting, by the second mobile terminal, a seventh resource occupancy indicator on a second symbol of a resource pool for inter-device communication and the first set of subcarriers if it is determined that the first mobile terminal will occupy four symbols and occupy all of the subbands, wherein the seventh resource occupancy indicator is for indicating a number of symbols that the second mobile terminal will occupy, while the seventh resource occupancy indicator is for indicating a subband that the second mobile terminal will occupy, wherein the second symbol is a symbol immediately following the first symbol;

and in response to sending the seventh resource occupancy indicator, sending, by the second mobile terminal, high priority sewage treatment plant monitoring information to the third mobile terminal on the selected resource.

stopping, by the first mobile terminal, transmission on the second symbol, a third symbol and a fourth symbol in response to receiving a seventh resource occupancy indicator in the second symbol, wherein the third symbol is the symbol immediately following the second symbol and the fourth symbol is the symbol immediately following the third symbol;

broadcasting, by the first mobile terminal, an eighth resource occupancy indicator on a fifth symbol of a resource pool for inter-device communication and the first set of subcarriers in response to receiving the seventh resource occupancy indicator in the second symbol, wherein the eighth resource occupancy indicator is for indicating a number of symbols that the first mobile terminal will occupy while the first resource occupancy indicator is for indicating a subband that the first mobile terminal will occupy, wherein the fifth symbol is a symbol immediately following the fourth symbol;

in response to sending the eighth resource occupancy indicator, sending, by the first mobile terminal, sewage treatment plant monitoring information to the third mobile terminal on the selected resource;

and responding to the received monitoring information of the sewage treatment plant, and sending the monitoring information of the sewage treatment plant to the base station by the third mobile terminal.

The invention also provides an intelligent monitoring system of the sewage treatment plant based on D2D communication, which comprises:

a unit for collecting monitoring information of a sewage treatment plant by a first mobile terminal and a second mobile terminal;

means for receiving, by a first mobile terminal and a second mobile terminal, inter-device communication resource pool configuration information transmitted by a base station, wherein the inter-device communication resource pool configuration information indicates, to the first mobile terminal, a resource pool for inter-device communication, wherein the resource pool for inter-device communication includes a plurality of symbols and a plurality of subbands;

means for broadcasting, by the first mobile terminal, a first resource occupancy indicator on a first symbol and a first set of subcarriers of a resource pool for inter-device communication in response to receiving the inter-device communication resource pool configuration information, wherein the first resource occupancy indicator is to indicate whether the first mobile terminal is to occupy one symbol or two symbols while the first resource occupancy indicator is to indicate that the first mobile terminal is to occupy all subbands of the resource pool for inter-device communication;

means for sending, by the first mobile terminal, sewage treatment plant monitoring information to a third mobile terminal on a first symbol and a second set of subcarriers of a resource pool for inter-device communication if the first mobile terminal is to occupy one symbol;

a unit for sending the monitoring information of the sewage treatment plant to the base station by the third mobile terminal in response to receiving the monitoring information of the sewage treatment plant;

means for determining, by the second mobile terminal, a time-frequency resource to be occupied by the first mobile terminal based on the first resource occupancy indicator in response to receiving the first resource occupancy indicator;

means for broadcasting, by a second mobile terminal, a second resource occupancy indicator on a second symbol of the resource pool for inter-device communication and the first set of subcarriers in response to determining that the first mobile terminal occupies the first symbol and all subbands of the resource pool for inter-device communication, wherein the second symbol is a symbol immediately following the first symbol, the second resource occupancy indicator indicating whether the second mobile terminal will occupy one symbol or two symbols while the second resource occupancy indicator indicates that the second mobile terminal will occupy all subbands of the resource pool for inter-device communication.

In a preferred embodiment, the intelligent monitoring system of the sewage treatment plant based on the D2D communication comprises:

means for sending, by the second mobile terminal, sewage treatment plant monitoring information to the third mobile terminal on a second symbol and a second set of subcarriers of a resource pool for inter-device communication if the second mobile terminal is to occupy two symbols, and sending, by the second mobile terminal, sewage treatment plant monitoring information to the third mobile terminal on a third symbol of the resource pool for inter-device communication and all subbands of the resource pool for inter-device communication, wherein the third symbol is a symbol immediately following the second symbol;

a unit for judging whether the monitoring information of the sewage treatment plant is required to be sent to the third mobile terminal by the second mobile terminal after the monitoring information of the sewage treatment plant is sent to the third mobile terminal;

means for broadcasting, by the second mobile terminal, a third resource occupancy indicator on a fourth symbol of a resource pool for inter-device communication and the first set of subcarriers if it is determined that the sewage treatment plant monitoring information needs to be sent to the third mobile terminal, wherein the fourth symbol is a symbol immediately following the third symbol, the third resource occupancy indicator is used to indicate whether the second mobile terminal will occupy one symbol or two symbols, and the third resource occupancy indicator is used to indicate that the second mobile terminal will occupy all subbands of the resource pool for inter-device communication;

means for sending, by the second mobile terminal, sewage treatment plant monitoring information to a third mobile terminal on a fourth symbol of a resource pool for inter-device communication and a second set of subcarriers if the second mobile terminal is to occupy one symbol.

means for broadcasting, by the first mobile terminal, a fourth resource occupancy indicator on the first symbol and the first set of subcarriers of the resource pool for inter-device communication in response to receiving the inter-device communication resource pool configuration information, wherein the fourth resource occupancy indicator is for indicating a number of symbols to be occupied by the first mobile terminal, while the first resource occupancy indicator is for indicating a subband to be occupied by the first mobile terminal;

means for transmitting, by the first mobile terminal, sewage treatment plant monitoring information to the third mobile terminal on the selected resource in response to transmitting the fourth resource occupancy indicator;

means for determining, by the second mobile terminal, a time-frequency resource to be occupied by the first mobile terminal based on the fourth resource occupancy indicator in response to receiving the fourth resource occupancy indicator;

means for broadcasting, by a second mobile terminal, a fifth resource occupancy indicator on a second symbol and a first set of subcarriers of a resource pool for inter-device communication, if it is determined that the first mobile terminal occupies four symbols and a first subband, wherein the second symbol is separated from the first symbol by three OFDM symbols, the fifth resource occupancy indicator is used to indicate the number of symbols to be occupied by the second mobile terminal, and the fifth resource occupancy indicator is used to indicate a subband to be occupied by the second mobile terminal;

means for transmitting, by the second mobile terminal, the sewage treatment plant monitoring information to the third mobile terminal on the selected resource in response to transmitting the fifth resource occupancy indicator.

means for broadcasting, by the second mobile terminal, a sixth resource occupancy indicator on the first symbol and the second set of subcarriers of the resource pool for inter-device communication in response to determining that the first mobile terminal occupies the four symbols and the first subband, the sixth resource occupancy indicator for indicating a number of symbols the second mobile terminal will occupy while the sixth resource occupancy indicator for indicating a subband the second mobile terminal will occupy;

means for sending, by the second mobile terminal, sewage treatment plant monitoring information to the third mobile terminal on the selected resource in response to sending the sixth resource occupancy indicator;

means for determining, by the second mobile terminal, a time-frequency resource to be occupied by the first mobile terminal based on the fourth resource occupancy indicator in response to receiving the fourth resource occupancy indicator, wherein the second mobile terminal has generated high-priority sewage treatment plant monitoring information to be sent to the third mobile terminal prior to receiving the fourth resource occupancy indicator;

means for broadcasting, by the second mobile terminal, a seventh resource occupancy indicator on a second symbol of a resource pool for inter-device communication and the first set of subcarriers if it is determined that the first mobile terminal is to occupy four symbols and occupy all of the subbands, wherein the seventh resource occupancy indicator is for indicating a number of symbols that the second mobile terminal is to occupy, while the seventh resource occupancy indicator is for indicating subbands that the second mobile terminal is to occupy, wherein the second symbol is a symbol immediately following the first symbol;

means for transmitting, by the second mobile terminal, high priority sewage treatment plant monitoring information to the third mobile terminal on the selected resource in response to transmitting the seventh resource occupancy indicator.

means for stopping, by the first mobile terminal, transmission on the second symbol, a third symbol, and a fourth symbol in response to receiving a seventh resource occupancy indicator in the second symbol, wherein the third symbol is the symbol immediately following the second symbol and the fourth symbol is the symbol immediately following the third symbol;

means for broadcasting, by the first mobile terminal, an eighth resource occupancy indicator on a fifth symbol of a resource pool for inter-device communication and the first set of subcarriers in response to receiving the seventh resource occupancy indicator in the second symbol, wherein the eighth resource occupancy indicator is to indicate a number of symbols that the first mobile terminal will occupy while the first resource occupancy indicator is to indicate a subband that the first mobile terminal will occupy, wherein the fifth symbol is a symbol immediately following the fourth symbol;

means for transmitting, by the first mobile terminal, sewage treatment plant monitoring information to the third mobile terminal on the selected resource in response to transmitting the eighth resource occupancy indicator;

and the third mobile terminal is used for responding to the received monitoring information of the sewage treatment plant and sending the monitoring information of the sewage treatment plant to the base station.

Compared with the prior art, the invention has the advantages that as the sewage treatment plant has high noise and poor environment, a plurality of workers do not want to monitor the sewage treatment plant, and in order to complete the operation task, the factory often requires the workers to monitor the sewage treatment plant alternately through a hard assignment mode. In this case, the working enthusiasm of workers is low, which often results in missed monitoring of some important monitoring indexes or other undesirable accidents. In order to prevent the situation, an unmanned automatic monitoring method of the sewage treatment equipment needs to be established, and in order to realize automatic monitoring, the application provides an intelligent monitoring method and system of the sewage treatment plant based on D2D communication.

Drawings

Fig. 1 is a schematic diagram of a system architecture according to an embodiment of the present invention.

FIG. 2 is a flow diagram of a method according to an embodiment of the invention.

Detailed Description

The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments.

Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.

Example 1

FIG. 2 is a flow diagram of a method according to an embodiment of the invention. As shown in the figure, the intelligent monitoring method of the sewage treatment plant based on D2D communication comprises the following steps:

step 101: collecting monitoring information of a sewage treatment plant by a first mobile terminal and a second mobile terminal;

step 102: receiving, by a first mobile terminal and a second mobile terminal, inter-device communication resource pool configuration information sent by a base station, wherein the inter-device communication resource pool configuration information indicates, to the first mobile terminal, a resource pool for performing inter-device communication, wherein the resource pool for performing inter-device communication includes a plurality of symbols and a plurality of subbands;

step 103: broadcasting, by the first mobile terminal, a first resource occupancy indicator on a first symbol and a first set of subcarriers of a resource pool for inter-device communication in response to receiving the inter-device communication resource pool configuration information, wherein the first resource occupancy indicator is to indicate whether the first mobile terminal is to occupy one symbol or two symbols, while the first resource occupancy indicator is to indicate that the first mobile terminal is to occupy all subbands of the resource pool for inter-device communication;

step 104: if the first mobile terminal occupies one symbol, the first mobile terminal sends monitoring information of the sewage treatment plant to a third mobile terminal on a first symbol and a second subcarrier set of a resource pool for carrying out inter-device communication;

step 105: in response to receiving the monitoring information of the sewage treatment plant, the third mobile terminal sends the monitoring information of the sewage treatment plant to the base station;

step 106: in response to receiving the first resource occupation indicator, the second mobile terminal judges the time-frequency resource to be occupied by the first mobile terminal based on the first resource occupation indicator;

step 107: in response to determining that the first mobile terminal occupies the first symbol and all subbands of the resource pool used for inter-device communication, broadcasting, by the second mobile terminal, a second resource occupancy indicator on a second symbol of the resource pool used for inter-device communication and the first set of subcarriers, wherein the second symbol is a symbol immediately following the first symbol, the second resource occupancy indicator indicating whether the second mobile terminal will occupy one symbol or two symbols, while the second resource occupancy indicator indicates that the second mobile terminal will occupy all subbands of the resource pool used for inter-device communication.

In the scheme, the intelligent monitoring method of the sewage treatment plant based on D2D communication comprises the following steps: if the second mobile terminal occupies two symbols, the second mobile terminal sends monitoring information of the sewage treatment plant to a third mobile terminal on a second symbol and a second subcarrier set of a resource pool for performing inter-device communication, and simultaneously the second mobile terminal sends the monitoring information of the sewage treatment plant to the third mobile terminal on a third symbol of the resource pool for performing the inter-device communication and all subbands of the resource pool for performing the inter-device communication, wherein the third symbol is a symbol next to the second symbol; in response to receiving the monitoring information of the sewage treatment plant, the third mobile terminal sends the monitoring information of the sewage treatment plant to the base station; after the monitoring information of the sewage treatment plant is sent to the third mobile terminal, the second mobile terminal judges whether the monitoring information of the sewage treatment plant needs to be sent to the third mobile terminal; if the monitoring information of the sewage treatment plant is judged to be required to be sent to the third mobile terminal, the second mobile terminal broadcasts a third resource occupation indicator on a fourth symbol and a first subcarrier set of a resource pool for performing the inter-device communication, wherein the fourth symbol is a symbol next to the third symbol, the third resource occupation indicator is used for indicating whether the second mobile terminal occupies one symbol or two symbols, and the third resource occupation indicator is used for indicating that the second mobile terminal occupies all subbands of the resource pool for performing the inter-device communication; and if the second mobile terminal occupies one symbol, the second mobile terminal sends the monitoring information of the sewage treatment plant to the third mobile terminal on a fourth symbol of a resource pool for performing the inter-device communication and a second subcarrier set.

Example 2

In a preferred embodiment, the intelligent monitoring method of the sewage treatment plant based on the D2D communication comprises the following steps: in response to receiving the inter-device communication resource pool configuration information, broadcasting, by the first mobile terminal, a fourth resource occupancy indicator on the first symbol and the first set of subcarriers of the resource pool for inter-device communication, wherein the fourth resource occupancy indicator is used to indicate the number of symbols to be occupied by the first mobile terminal, and the first resource occupancy indicator is used to indicate subbands to be occupied by the first mobile terminal; in response to sending the fourth resource occupancy indicator, sending, by the first mobile terminal, sewage treatment plant monitoring information to the third mobile terminal on the selected resource; in response to receiving the monitoring information of the sewage treatment plant, the third mobile terminal sends the monitoring information of the sewage treatment plant to the base station; in response to receiving the fourth resource occupation indicator, the second mobile terminal judges the time-frequency resource to be occupied by the first mobile terminal based on the fourth resource occupation indicator; if the first mobile terminal occupies four symbols and a first sub-band, broadcasting a fifth resource occupation indicator on a second symbol and a first sub-carrier set of a resource pool for performing inter-device communication by a second mobile terminal, wherein three OFDM symbols are arranged between the second symbol and the first symbol, the fifth resource occupation indicator is used for indicating the number of symbols to be occupied by the second mobile terminal, and the fifth resource occupation indicator is used for indicating the sub-band to be occupied by the second mobile terminal; in response to sending the fifth resource occupancy indicator, sending, by the second mobile terminal, sewage treatment plant monitoring information to the third mobile terminal on the selected resource.

Further, the intelligent monitoring method of the sewage treatment plant based on the D2D communication comprises the following steps: in response to determining that the first mobile terminal occupies the four symbols and the first sub-band, broadcasting, by the second mobile terminal, a sixth resource occupancy indicator on the first symbol and the second set of sub-carriers of the resource pool for inter-device communication, the sixth resource occupancy indicator being for indicating a number of symbols that the second mobile terminal will occupy, while the sixth resource occupancy indicator being for indicating a sub-band that the second mobile terminal will occupy; in response to sending the sixth resource occupancy indicator, sending, by the second mobile terminal, sewage treatment plant monitoring information to the third mobile terminal on the selected resource; in response to receiving the fourth resource occupancy indicator, the second mobile terminal judges the time-frequency resource to be occupied by the first mobile terminal based on the fourth resource occupancy indicator, wherein the second mobile terminal has generated monitoring information of a high-priority sewage treatment plant to be sent to the third mobile terminal before receiving the fourth resource occupancy indicator; broadcasting, by the second mobile terminal, a seventh resource occupancy indicator on a second symbol of a resource pool for inter-device communication and the first set of subcarriers if it is determined that the first mobile terminal will occupy four symbols and occupy all of the subbands, wherein the seventh resource occupancy indicator is for indicating a number of symbols that the second mobile terminal will occupy, while the seventh resource occupancy indicator is for indicating a subband that the second mobile terminal will occupy, wherein the second symbol is a symbol immediately following the first symbol; and in response to sending the seventh resource occupancy indicator, sending, by the second mobile terminal, high priority sewage treatment plant monitoring information to the third mobile terminal on the selected resource.

Further, the intelligent monitoring method of the sewage treatment plant based on the D2D communication comprises the following steps: stopping, by the first mobile terminal, transmission on the second symbol, a third symbol and a fourth symbol in response to receiving a seventh resource occupancy indicator in the second symbol, wherein the third symbol is the symbol immediately following the second symbol and the fourth symbol is the symbol immediately following the third symbol; broadcasting, by the first mobile terminal, an eighth resource occupancy indicator on a fifth symbol of a resource pool for inter-device communication and the first set of subcarriers in response to receiving the seventh resource occupancy indicator in the second symbol, wherein the eighth resource occupancy indicator is for indicating a number of symbols that the first mobile terminal will occupy while the first resource occupancy indicator is for indicating a subband that the first mobile terminal will occupy, wherein the fifth symbol is a symbol immediately following the fourth symbol; in response to sending the eighth resource occupancy indicator, sending, by the first mobile terminal, sewage treatment plant monitoring information to the third mobile terminal on the selected resource; and responding to the received monitoring information of the sewage treatment plant, and sending the monitoring information of the sewage treatment plant to the base station by the third mobile terminal.

Example 3

The invention provides an intelligent monitoring system of a sewage treatment plant based on D2D communication, which comprises: a unit for collecting monitoring information of a sewage treatment plant by a first mobile terminal and a second mobile terminal; means for receiving, by a first mobile terminal and a second mobile terminal, inter-device communication resource pool configuration information transmitted by a base station, wherein the inter-device communication resource pool configuration information indicates, to the first mobile terminal, a resource pool for inter-device communication, wherein the resource pool for inter-device communication includes a plurality of symbols and a plurality of subbands; means for broadcasting, by the first mobile terminal, a first resource occupancy indicator on a first symbol and a first set of subcarriers of a resource pool for inter-device communication in response to receiving the inter-device communication resource pool configuration information, wherein the first resource occupancy indicator is to indicate whether the first mobile terminal is to occupy one symbol or two symbols while the first resource occupancy indicator is to indicate that the first mobile terminal is to occupy all subbands of the resource pool for inter-device communication; means for sending, by the first mobile terminal, sewage treatment plant monitoring information to a third mobile terminal on a first symbol and a second set of subcarriers of a resource pool for inter-device communication if the first mobile terminal is to occupy one symbol; a unit for sending the monitoring information of the sewage treatment plant to the base station by the third mobile terminal in response to receiving the monitoring information of the sewage treatment plant; means for determining, by the second mobile terminal, a time-frequency resource to be occupied by the first mobile terminal based on the first resource occupancy indicator in response to receiving the first resource occupancy indicator; means for broadcasting, by a second mobile terminal, a second resource occupancy indicator on a second symbol of the resource pool for inter-device communication and the first set of subcarriers in response to determining that the first mobile terminal occupies the first symbol and all subbands of the resource pool for inter-device communication, wherein the second symbol is a symbol immediately following the first symbol, the second resource occupancy indicator indicating whether the second mobile terminal will occupy one symbol or two symbols while the second resource occupancy indicator indicates that the second mobile terminal will occupy all subbands of the resource pool for inter-device communication.

In the above scheme, the intelligent monitoring system of the sewage treatment plant based on D2D communication includes: means for sending, by the second mobile terminal, sewage treatment plant monitoring information to the third mobile terminal on a second symbol and a second set of subcarriers of a resource pool for inter-device communication if the second mobile terminal is to occupy two symbols, and sending, by the second mobile terminal, sewage treatment plant monitoring information to the third mobile terminal on a third symbol of the resource pool for inter-device communication and all subbands of the resource pool for inter-device communication, wherein the third symbol is a symbol immediately following the second symbol; a unit for sending the monitoring information of the sewage treatment plant to the base station by the third mobile terminal in response to receiving the monitoring information of the sewage treatment plant; a unit for judging whether the monitoring information of the sewage treatment plant is required to be sent to the third mobile terminal by the second mobile terminal after the monitoring information of the sewage treatment plant is sent to the third mobile terminal; means for broadcasting, by the second mobile terminal, a third resource occupancy indicator on a fourth symbol of a resource pool for inter-device communication and the first set of subcarriers if it is determined that the sewage treatment plant monitoring information needs to be sent to the third mobile terminal, wherein the fourth symbol is a symbol immediately following the third symbol, the third resource occupancy indicator is used to indicate whether the second mobile terminal will occupy one symbol or two symbols, and the third resource occupancy indicator is used to indicate that the second mobile terminal will occupy all subbands of the resource pool for inter-device communication; means for sending, by the second mobile terminal, sewage treatment plant monitoring information to a third mobile terminal on a fourth symbol of a resource pool for inter-device communication and a second set of subcarriers if the second mobile terminal is to occupy one symbol.

Example 4

In a preferred embodiment, the intelligent monitoring system of the sewage treatment plant based on the D2D communication comprises: means for broadcasting, by the first mobile terminal, a fourth resource occupancy indicator on the first symbol and the first set of subcarriers of the resource pool for inter-device communication in response to receiving the inter-device communication resource pool configuration information, wherein the fourth resource occupancy indicator is for indicating a number of symbols to be occupied by the first mobile terminal, while the first resource occupancy indicator is for indicating a subband to be occupied by the first mobile terminal; means for transmitting, by the first mobile terminal, sewage treatment plant monitoring information to the third mobile terminal on the selected resource in response to transmitting the fourth resource occupancy indicator; a unit for sending the monitoring information of the sewage treatment plant to the base station by the third mobile terminal in response to receiving the monitoring information of the sewage treatment plant; means for determining, by the second mobile terminal, a time-frequency resource to be occupied by the first mobile terminal based on the fourth resource occupancy indicator in response to receiving the fourth resource occupancy indicator; means for broadcasting, by a second mobile terminal, a fifth resource occupancy indicator on a second symbol and a first set of subcarriers of a resource pool for inter-device communication, if it is determined that the first mobile terminal occupies four symbols and a first subband, wherein the second symbol is separated from the first symbol by three OFDM symbols, the fifth resource occupancy indicator is used to indicate the number of symbols to be occupied by the second mobile terminal, and the fifth resource occupancy indicator is used to indicate a subband to be occupied by the second mobile terminal; means for transmitting, by the second mobile terminal, the sewage treatment plant monitoring information to the third mobile terminal on the selected resource in response to transmitting the fifth resource occupancy indicator.

Further, the intelligent monitoring system of the sewage treatment plant based on the D2D communication comprises: means for broadcasting, by the second mobile terminal, a sixth resource occupancy indicator on the first symbol and the second set of subcarriers of the resource pool for inter-device communication in response to determining that the first mobile terminal occupies the four symbols and the first subband, the sixth resource occupancy indicator for indicating a number of symbols the second mobile terminal will occupy while the sixth resource occupancy indicator for indicating a subband the second mobile terminal will occupy; means for sending, by the second mobile terminal, sewage treatment plant monitoring information to the third mobile terminal on the selected resource in response to sending the sixth resource occupancy indicator; means for determining, by the second mobile terminal, a time-frequency resource to be occupied by the first mobile terminal based on the fourth resource occupancy indicator in response to receiving the fourth resource occupancy indicator, wherein the second mobile terminal has generated high-priority sewage treatment plant monitoring information to be sent to the third mobile terminal prior to receiving the fourth resource occupancy indicator; means for broadcasting, by the second mobile terminal, a seventh resource occupancy indicator on a second symbol of a resource pool for inter-device communication and the first set of subcarriers if it is determined that the first mobile terminal is to occupy four symbols and occupy all of the subbands, wherein the seventh resource occupancy indicator is for indicating a number of symbols that the second mobile terminal is to occupy, while the seventh resource occupancy indicator is for indicating subbands that the second mobile terminal is to occupy, wherein the second symbol is a symbol immediately following the first symbol; means for transmitting, by the second mobile terminal, high priority sewage treatment plant monitoring information to the third mobile terminal on the selected resource in response to transmitting the seventh resource occupancy indicator.

Further, the intelligent monitoring system of the sewage treatment plant based on the D2D communication comprises: means for stopping, by the first mobile terminal, transmission on the second symbol, a third symbol, and a fourth symbol in response to receiving a seventh resource occupancy indicator in the second symbol, wherein the third symbol is the symbol immediately following the second symbol and the fourth symbol is the symbol immediately following the third symbol; means for broadcasting, by the first mobile terminal, an eighth resource occupancy indicator on a fifth symbol of a resource pool for inter-device communication and the first set of subcarriers in response to receiving the seventh resource occupancy indicator in the second symbol, wherein the eighth resource occupancy indicator is to indicate a number of symbols that the first mobile terminal will occupy while the first resource occupancy indicator is to indicate a subband that the first mobile terminal will occupy, wherein the fifth symbol is a symbol immediately following the fourth symbol; means for transmitting, by the first mobile terminal, sewage treatment plant monitoring information to the third mobile terminal on the selected resource in response to transmitting the eighth resource occupancy indicator; and the third mobile terminal is used for responding to the received monitoring information of the sewage treatment plant and sending the monitoring information of the sewage treatment plant to the base station.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.

Claims

1. The intelligent monitoring method of the sewage treatment plant based on the D2D communication is characterized by comprising the following steps of:

receiving, by a first mobile terminal and a second mobile terminal, inter-device communication resource pool configuration information sent by a base station, wherein the inter-device communication resource pool configuration information indicates, to the first mobile terminal, a resource pool for inter-device communication, wherein the resource pool for inter-device communication includes a plurality of symbols and a plurality of subbands;

broadcasting, by a first mobile terminal, a first resource occupancy indicator on a first symbol and a first set of subcarriers of a resource pool for inter-device communication in response to receiving the inter-device communication resource pool configuration information, wherein the first resource occupancy indicator is used to indicate whether the first mobile terminal will occupy one symbol or two symbols while the first resource occupancy indicator is used to indicate that the first mobile terminal will occupy all subbands of the resource pool for inter-device communication;

if the first mobile terminal occupies one symbol, the first mobile terminal sends the monitoring information of the sewage treatment plant to a third mobile terminal on a first symbol and a second subcarrier set of a resource pool for carrying out inter-device communication;

in response to receiving the first resource occupancy indicator, determining, by a second mobile terminal, time-frequency resources to be occupied by the first mobile terminal based on the first resource occupancy indicator;

in response to determining that the first mobile terminal occupies the first symbol and all subbands of the resource pool for inter-device communication, broadcasting, by a second mobile terminal, a second resource occupancy indicator on a second symbol of the resource pool for inter-device communication and a first set of subcarriers, wherein the second symbol is a symbol immediately following the first symbol, the second resource occupancy indicator indicating whether the second mobile terminal will occupy one symbol or two symbols, while the second resource occupancy indicator indicates that the second mobile terminal will occupy all subbands of the resource pool for inter-device communication.

2. The intelligent monitoring method for the sewage treatment plant based on the D2D communication according to claim 1, wherein the intelligent monitoring method for the sewage treatment plant based on the D2D communication comprises the following steps:

if the second mobile terminal occupies two symbols, the second mobile terminal sends the monitoring information of the sewage treatment plant to a third mobile terminal on a second symbol and a second subcarrier set of a resource pool for performing inter-device communication, and simultaneously the second mobile terminal sends the monitoring information of the sewage treatment plant to the third mobile terminal on a third symbol of the resource pool for performing inter-device communication and all subbands of the resource pool for performing inter-device communication, wherein the third symbol is a symbol immediately following the second symbol;

if the sewage treatment plant monitoring information is judged to be required to be sent to the third mobile terminal, broadcasting a third resource occupation indicator on a fourth symbol and a first subcarrier set of a resource pool for inter-device communication by the second mobile terminal, wherein the fourth symbol is a symbol immediately following the third symbol, the third resource occupation indicator is used for indicating whether the second mobile terminal occupies one symbol or two symbols, and the third resource occupation indicator is used for indicating that the second mobile terminal occupies all subbands of the resource pool for inter-device communication;

and if the second mobile terminal occupies one symbol, the second mobile terminal sends the monitoring information of the sewage treatment plant to a third mobile terminal on a fourth symbol of a resource pool for performing inter-device communication and a second subcarrier set.

3. The intelligent monitoring method for the sewage treatment plant based on the D2D communication according to claim 2, wherein the intelligent monitoring method for the sewage treatment plant based on the D2D communication comprises the following steps:

in response to receiving the inter-device communication resource pool configuration information, broadcasting, by a first mobile terminal, a fourth resource occupancy indicator on a first symbol and a first set of subcarriers of a resource pool for inter-device communication, wherein the fourth resource occupancy indicator is used to indicate a number of symbols to be occupied by the first mobile terminal, while the fourth resource occupancy indicator is used to indicate a subband to be occupied by the first mobile terminal;

sending, by the first mobile terminal, the sewage treatment plant monitoring information to the third mobile terminal on the selected resource in response to sending the fourth resource occupancy indicator;

in response to receiving the fourth resource occupancy indicator, determining, by the second mobile terminal, time-frequency resources to be occupied by the first mobile terminal based on the fourth resource occupancy indicator;

if the first mobile terminal is judged to occupy four symbols and a first sub-band, broadcasting a fifth resource occupation indicator on a fifth symbol and a first sub-carrier set of a resource pool for inter-device communication by a second mobile terminal, wherein the fifth symbol and the first symbol are separated by three OFDM symbols, the fifth resource occupation indicator is used for indicating the number of symbols to be occupied by the second mobile terminal, and the fifth resource occupation indicator is used for indicating the sub-band to be occupied by the second mobile terminal;

sending, by the second mobile terminal, the sewage treatment plant monitoring information to the third mobile terminal on the selected resource in response to sending the fifth resource occupancy indicator.

4. The intelligent monitoring method for the sewage treatment plant based on the D2D communication according to claim 3, wherein the intelligent monitoring method for the sewage treatment plant based on the D2D communication comprises the following steps:

in response to determining that the first mobile terminal occupies four symbols and a first sub-band, broadcasting, by a second mobile terminal, a sixth resource occupancy indicator on a first set of symbols and a second set of sub-carriers of a resource pool for inter-device communication, the sixth resource occupancy indicator indicating a number of symbols the second mobile terminal will occupy while the sixth resource occupancy indicator indicates a sub-band the second mobile terminal will occupy;

sending, by the second mobile terminal, the sewage treatment plant monitoring information to the third mobile terminal on the selected resource in response to sending the sixth resource occupancy indicator;

in response to receiving the fourth resource occupancy indicator, determining, by a second mobile terminal, a time-frequency resource to be occupied by the first mobile terminal based on the fourth resource occupancy indicator, wherein the second mobile terminal has generated high-priority sewage treatment plant monitoring information to be sent to the third mobile terminal prior to receiving the fourth resource occupancy indicator;

broadcasting, by a second mobile terminal, a seventh resource occupancy indicator on a first set of subcarriers and a second symbol of a resource pool for inter-device communication, if it is determined that a first mobile terminal will occupy four symbols, wherein the second symbol is a symbol immediately following the first symbol, on a number of symbols to be occupied by the second mobile terminal, and the seventh resource occupancy indicator is for indicating a subband to be occupied by the second mobile terminal;

sending, by the second mobile terminal, the high priority sewage treatment plant monitoring information to the third mobile terminal on the selected resource in response to sending the seventh resource occupancy indicator.

5. The intelligent monitoring method for the sewage treatment plant based on the D2D communication according to claim 4, wherein the intelligent monitoring method for the sewage treatment plant based on the D2D communication comprises the following steps:

stopping, by the first mobile terminal, transmission on a second symbol, a third symbol, and a fourth symbol in response to receiving the seventh resource occupancy indicator in the second symbol, wherein the third symbol is the symbol immediately following the second symbol, and the fourth symbol is the symbol immediately following the third symbol;

broadcasting, by a first mobile terminal, an eighth resource occupancy indicator on a first set of subcarriers and a fifth symbol of a resource pool for inter-device communication in response to receiving the seventh resource occupancy indicator in the second symbol, wherein the eighth resource occupancy indicator is for indicating a number of symbols that the first mobile terminal will occupy while the eighth resource occupancy indicator is for indicating a subband that the first mobile terminal will occupy, wherein the fifth symbol is a symbol immediately following the fourth symbol;

sending, by the first mobile terminal, the sewage treatment plant monitoring information to the third mobile terminal on the selected resource in response to sending the eighth resource occupancy indicator;

and responding to the received monitoring information of the sewage treatment plant, and sending the monitoring information of the sewage treatment plant to the base station by a third mobile terminal.

6. The intelligent monitoring system of the sewage treatment plant based on the D2D communication is characterized in that the intelligent monitoring system of the sewage treatment plant based on the D2D communication comprises:

means for receiving, by a first mobile terminal and a second mobile terminal, inter-device communication resource pool configuration information transmitted by a base station, wherein the inter-device communication resource pool configuration information indicates to the first mobile terminal a resource pool for inter-device communication, wherein the resource pool for inter-device communication includes a plurality of symbols and a plurality of subbands;

means for broadcasting, by a first mobile terminal, a first resource occupancy indicator on a first symbol and a first set of subcarriers of a resource pool for inter-device communication in response to receiving the inter-device communication resource pool configuration information, wherein the first resource occupancy indicator is to indicate whether the first mobile terminal is to occupy one symbol or two symbols while the first resource occupancy indicator is to indicate that the first mobile terminal is to occupy all subbands of the resource pool for inter-device communication;

means for sending, by the first mobile terminal, the sewage treatment plant monitoring information to a third mobile terminal on a first symbol and a second set of subcarriers of a resource pool for inter-device communication if the first mobile terminal is to occupy one symbol;

a unit for sending the monitoring information of the sewage treatment plant to the base station by a third mobile terminal in response to receiving the monitoring information of the sewage treatment plant;

means for determining, by a second mobile terminal, time-frequency resources to be occupied by the first mobile terminal based on the first resource occupancy indicator in response to receiving the first resource occupancy indicator;

means for broadcasting, by a second mobile terminal, a second resource occupancy indicator on a second symbol of a resource pool for inter-device communication and a first set of subcarriers in response to determining that the first mobile terminal occupies a first symbol and all subbands of the resource pool for inter-device communication, wherein the second symbol is a symbol immediately following the first symbol, the second resource occupancy indicator indicating whether the second mobile terminal will occupy one symbol or two symbols while the second resource occupancy indicator indicates that the second mobile terminal will occupy all subbands of the resource pool for inter-device communication.

7. The intelligent monitoring system of the sewage treatment plant based on the D2D communication according to claim 6, wherein the intelligent monitoring system of the sewage treatment plant based on the D2D communication comprises:

means for sending, by the second mobile terminal, the wastewater treatment plant monitoring information to a third mobile terminal on a second symbol and a second set of subcarriers of a resource pool for inter-device communication, while sending, by the second mobile terminal, the wastewater treatment plant monitoring information to the third mobile terminal on a third symbol of the resource pool for inter-device communication and all subbands of the resource pool for inter-device communication, wherein the third symbol is a symbol immediately following the second symbol, if the second mobile terminal is to occupy two symbols;

a unit for judging whether the monitoring information of the sewage treatment plant needs to be sent to the third mobile terminal by the second mobile terminal after the monitoring information of the sewage treatment plant is sent to the third mobile terminal;

means for broadcasting, by a second mobile terminal, a third resource occupancy indicator on a first set of subcarriers and a fourth symbol of a resource pool for inter-device communication, if it is determined that sewage treatment plant monitoring information needs to be sent to the third mobile terminal, wherein the fourth symbol is a symbol immediately following the third symbol, the third resource occupancy indicator is used to indicate whether the second mobile terminal will occupy one symbol or two symbols, and the third resource occupancy indicator is used to indicate that the second mobile terminal will occupy all subbands of the resource pool for inter-device communication;

means for sending, by the second mobile terminal, the sewage treatment plant monitoring information to a third mobile terminal on a fourth symbol of a resource pool for inter-device communication and a second set of subcarriers if the second mobile terminal is to occupy one symbol.

8. The intelligent monitoring system of the sewage treatment plant based on the D2D communication according to claim 7, wherein the intelligent monitoring system of the sewage treatment plant based on the D2D communication comprises:

means for broadcasting, by a first mobile terminal, a fourth resource occupancy indicator on a first symbol and a first set of subcarriers of a resource pool for inter-device communication in response to receiving the inter-device communication resource pool configuration information, wherein the fourth resource occupancy indicator is used to indicate a number of symbols to be occupied by the first mobile terminal while the fourth resource occupancy indicator is used to indicate subbands to be occupied by the first mobile terminal;

means for transmitting, by the first mobile terminal, the wastewater treatment plant monitoring information to the third mobile terminal on the selected resource in response to transmitting the fourth resource occupancy indicator;

means for determining, by a second mobile terminal, time-frequency resources to be occupied by the first mobile terminal based on the fourth resource occupancy indicator in response to receiving the fourth resource occupancy indicator;

means for broadcasting, by a second mobile terminal, a fifth resource occupancy indicator on a fifth symbol and a first set of subcarriers of a resource pool for inter-device communication, if it is determined that the first mobile terminal occupies four symbols and a first subband, wherein the fifth symbol is separated from the first symbol by three OFDM symbols, the fifth resource occupancy indicator is used to indicate a number of symbols to be occupied by the second mobile terminal, and the fifth resource occupancy indicator is used to indicate a subband to be occupied by the second mobile terminal;

means for transmitting, by the second mobile terminal, the wastewater treatment plant monitoring information to the third mobile terminal on the selected resource in response to transmitting the fifth resource occupancy indicator.

9. The intelligent monitoring system of the sewage treatment plant based on the D2D communication according to claim 8, wherein the intelligent monitoring system of the sewage treatment plant based on the D2D communication comprises:

means for broadcasting, by a second mobile terminal, a sixth resource occupancy indicator on a first symbol and a second set of subcarriers of a resource pool for inter-device communication in response to determining that the first mobile terminal occupies four symbols and a first subband, the sixth resource occupancy indicator indicating a number of symbols that the second mobile terminal will occupy while the sixth resource occupancy indicator indicates a subband that the second mobile terminal will occupy;

means for transmitting, by the second mobile terminal, the wastewater treatment plant monitoring information to the third mobile terminal on the selected resource in response to transmitting the sixth resource occupancy indicator;

means for determining, by a second mobile terminal, a time-frequency resource to be occupied by the first mobile terminal based on the fourth resource occupancy indicator in response to receiving the fourth resource occupancy indicator, wherein the second mobile terminal has generated high-priority sewage treatment plant monitoring information to be sent to the third mobile terminal prior to receiving the fourth resource occupancy indicator;

means for broadcasting, by a second mobile terminal, a seventh resource occupancy indicator on a first set of subcarriers and a second symbol of a resource pool for inter-device communication if it is determined that a first mobile terminal will occupy four symbols, wherein the seventh resource occupancy indicator is for indicating a number of symbols that the second mobile terminal will occupy, and wherein the seventh resource occupancy indicator is for indicating a subband that the second mobile terminal will occupy, wherein the second symbol is a symbol immediately following the first symbol;

means for transmitting, by the second mobile terminal, the high priority sewage treatment plant monitoring information to the third mobile terminal on the selected resource in response to transmitting the seventh resource occupancy indicator.

10. The intelligent monitoring system of the sewage treatment plant based on the D2D communication according to claim 9, wherein the intelligent monitoring system of the sewage treatment plant based on the D2D communication comprises:

means for stopping, by the first mobile terminal, transmission on a second symbol, a third symbol, and a fourth symbol in response to receiving the seventh resource occupancy indicator in the second symbol, wherein the third symbol is the symbol immediately following the second symbol, and the fourth symbol is the symbol immediately following the third symbol;

means for broadcasting, by a first mobile terminal, an eighth resource occupancy indicator on a first set of subcarriers and a fifth symbol of a resource pool for inter-device communication in response to receiving the seventh resource occupancy indicator in the second symbol, wherein the eighth resource occupancy indicator is for indicating a number of symbols that the first mobile terminal will occupy while the eighth resource occupancy indicator is for indicating a subband that the first mobile terminal will occupy, wherein the fifth symbol is a symbol immediately following the fourth symbol;

means for transmitting, by the first mobile terminal, the wastewater treatment plant monitoring information to the third mobile terminal on the selected resource in response to transmitting the eighth resource occupancy indicator;