CN113132924B

CN113132924B - Information transmission method and system for high-deployment-density sludge anaerobic digestion monitoring terminal

Info

Publication number: CN113132924B
Application number: CN202110416132.2A
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: 2021-04-19
Filing date: 2021-04-19
Publication date: 2022-01-21
Anticipated expiration: 2041-04-19
Also published as: CN113132924A

Abstract

The invention discloses an information transmission method for a sludge anaerobic digestion monitoring terminal with high deployment density, which comprises the following steps: collecting anaerobic digestion information of the sludge by a monitoring terminal with a communication function; the monitoring terminal randomly accesses the first base station and monitors the system information and the synchronous signal sent by the second base station; responding to the random access of the first base station, and sending a first public key for message transmission to the first base station by the monitoring terminal; sending a base station adding request to the first base station by the monitoring terminal in response to monitoring the system information and the synchronization signal sent by the second base station; sending, by the first base station, a base station addition notification to the second base station in response to receiving the base station addition request; transmitting, by the second base station, a base station addition acknowledgement message to the first base station in response to receiving the base station addition notification; in response to receiving the base station addition confirmation message, sending, by the first base station, an RRC connection reconfiguration message to the monitoring terminal.

Description

Information transmission method and system for high-deployment-density sludge anaerobic digestion monitoring terminal

Technical Field

The invention relates to the technical field of sludge anaerobic digestion monitoring, in particular to an information transmission method and system for a sludge anaerobic digestion monitoring terminal with high deployment density.

Background

Anaerobic digestion of sludge refers to a digestion technique in which biodegradable organic matters in the sludge are decomposed into CH4, CO2, H2O and H2S by facultative bacteria and anaerobic bacteria under anaerobic conditions.

The prior art CN112456718A discloses a treatment device and a treatment method for a thermal hydrolysis sludge anaerobic digestion liquid. The treatment device comprises a forward osmosis unit, a high-salt concentration unit, a water production tank and a PLC control unit which are operated independently or simultaneously; the high-salt concentration unit is used for dynamically circulating the membrane treatment process of the forward osmosis unit; the forward osmosis unit comprises a raw material liquid tank, a first filter, an infusion pump, a circulating pump, an FO membrane, a liquid drawing tank and a liquid level sensor.

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 information transmission method and an information transmission system for a sludge anaerobic digestion monitoring terminal with high deployment density, which can overcome the defects of the prior art.

In order to achieve the above object, the present invention provides an information transmission method for a high deployment density sludge anaerobic digestion monitoring terminal, comprising the steps of:

collecting anaerobic digestion information of the sludge by a monitoring terminal with a communication function;

the monitoring terminal randomly accesses the first base station and monitors the system information and the synchronous signal sent by the second base station;

sending, by a monitoring terminal, a first public key for message transmission to a first base station in response to random access to the first base station, wherein the monitoring terminal has a first secret key for message transmission, and the first public key is used to decode data encrypted using the first secret key;

sending a base station adding request to the first base station by the monitoring terminal in response to monitoring the system information and the synchronization signal sent by the second base station;

in response to receiving a base station adding request, sending a base station adding notification to a second base station by a first base station, wherein the base station adding notification comprises a first public key used for message transmission;

responding to the received base station adding notification, and sending a base station adding confirmation message to the first base station by the second base station, wherein the base station adding confirmation message comprises a C-RNTI (radio network temporary identifier) used for monitoring the terminal and a random access preamble special for monitoring the terminal;

responding to the received base station addition confirmation message, and sending an RRC connection reconfiguration message to the monitoring terminal by the first base station, wherein the RRC connection reconfiguration message comprises a C-RNTI and a random access preamble special for the monitoring terminal;

and in response to receiving the RRC connection reconfiguration message, transmitting a random access preamble special for the monitoring terminal to the second base station by the monitoring terminal, and simultaneously transmitting a PUSCH message to the second base station by the monitoring terminal, wherein the PUSCH message comprises at least two fields, the first field comprises a random access request which is not encrypted by using the first secret key, and the second field comprises sludge anaerobic digestion information which is encrypted by using the first secret key.

In a preferred embodiment, the information transmission method for the sludge anaerobic digestion monitoring terminal with high deployment density comprises the following steps:

in response to receiving the PUSCH message, sending, by the second base station, a random access completion message to the monitoring terminal, and attempting, by the second base station, to decode, using the first public key, sludge anaerobic digestion information encrypted using the first secret key in a second field of the PUSCH message;

if the sludge anaerobic digestion information encrypted by the first secret key in the second field of the PUSCH message can be decoded by using the first public key, the second base station sends the sludge anaerobic digestion information encrypted by using the first secret key to the first base station;

sending, by the monitoring terminal, a second PUSCH message to the first base station in response to randomly accessing the first base station and in response to sending the first public key for message transmission to the first base station, wherein the second PUSCH message includes sludge anaerobic digestion information encrypted using the first public key;

in response to receiving the anaerobic digestion information of the sludge sent by the second base station and encrypted by using the first secret key, and in response to receiving the anaerobic digestion information of the sludge sent by the monitoring terminal and encrypted by using the first secret key, decoding, by the first base station, the anaerobic digestion information of the sludge encrypted by using the first secret key by using the first public key;

and the first base station sends the decoded sludge anaerobic digestion information encrypted by using the first secret key to a sludge anaerobic digestion monitoring center.

in response to receiving the random access completion message, the monitoring terminal sends a second public key to the second base station, and simultaneously the monitoring terminal indicates to the second base station not to send the second public key to other base stations, wherein the monitoring terminal has a second secret key for message transmission, and the second public key is used for decoding data encrypted by using the second secret key;

in response to receiving an indication not to transmit the second public key to other base stations, the second base station does not transmit the second secret key to the first base station;

in response to sending a second public key for message transmission to the second base station, broadcasting, by the monitoring terminal, sludge anaerobic digestion information encrypted with the second public key to the first base station and the second base station;

in response to receiving the broadcasted sludge anaerobic digestion information encrypted by using the second secret key, attempting to decode the broadcasted sludge anaerobic digestion information encrypted by using the second secret key by the first base station by using the first public key;

if the first base station cannot decode the broadcasted sludge anaerobic digestion information encrypted by using the second secret key by using the first public key, discarding the broadcasted sludge anaerobic digestion information encrypted by using the second secret key by using the first base station;

attempting, by the second base station, to decode the broadcasted sludge anaerobic digestion information encrypted using the second secret key using the second public key in response to receiving the broadcasted sludge anaerobic digestion information encrypted using the second secret key;

and the second base station sends the decoded sludge anaerobic digestion information encrypted by using the second secret key to a sludge anaerobic digestion monitoring center.

in response to receiving the random access completion message, the monitoring terminal sends a second public key to the second base station, and simultaneously the monitoring terminal instructs the second base station to send the second public key to other base stations, wherein the monitoring terminal is provided with a second secret key for message transmission, and the second public key is used for decoding data encrypted by using the second secret key;

transmitting, by the second base station, the second secret key to the first base station in response to receiving the indication to transmit the second public key to the other base station;

in response to receiving the broadcasted sludge anaerobic digestion information encrypted by using the second secret key, attempting, by the first base station, to decode the broadcasted sludge anaerobic digestion information encrypted by using the second secret key by using the first public key, and attempting, by the first base station, to decode the broadcasted sludge anaerobic digestion information encrypted by using the second secret key by using the second public key;

if the first base station successfully decodes the broadcasted anaerobic digestion information of the sludge encrypted by using the second secret key by using the second public key, the anaerobic digestion information of the sludge encrypted by using the second secret key is sent to the second base station by the first base station;

in response to receiving the anaerobic digestion information of the sludge sent by the first base station and encrypted by using the second secret key, decoding the anaerobic digestion information of the sludge encrypted by using the second secret key by using the second public key by the second base station;

in response to receiving the RRC connection reconfiguration message, transmitting, by the monitoring terminal, a random access preamble dedicated to the monitoring terminal to the second base station, and simultaneously transmitting, by the monitoring terminal, a third PUSCH message to the second base station, wherein the third PUSCH message includes at least two fields, wherein the first field includes a random access request that is not encrypted using the first secret key or the second secret key, wherein the second field includes a second public key and an indication that the second base station is not allowed to transmit the second public key to other base stations, wherein the monitoring terminal has the second secret key for message transmission, and the second public key is used to decode data encrypted using the second secret key;

in response to receiving the third PUSCH message, sending, by the second base station, a random access completion message to the monitoring terminal;

broadcasting, by the monitoring terminal, sludge anaerobic digestion information encrypted using a second secret key to the first base station and the second base station in response to randomly accessing the first base station and in response to transmitting the first public key for message transmission to the first base station and in response to receiving the random access completion message;

the second base station sends the decoded sludge anaerobic digestion information encrypted by using the second secret key to a sludge anaerobic digestion monitoring center;

in response to receiving the RRC connection reconfiguration message, transmitting, by the monitoring terminal, a random access preamble dedicated to the monitoring terminal to the second base station, and simultaneously transmitting, by the monitoring terminal, a fourth PUSCH message to the second base station, wherein the fourth PUSCH message includes at least two fields, wherein the first field includes a random access request that is not encrypted using the first secret key or the second secret key, wherein the second field includes a second public key and an indication that the second base station is allowed to transmit the second public key to other base stations, wherein the monitoring terminal has a second secret key for message transmission, and the second public key is used to decode data encrypted using the second secret key;

in response to receiving the fourth PUSCH message, sending, by the second base station, a random access completion message to the monitoring terminal;

transmitting, by the second base station, the second secret key to the first base station in response to receiving the indication that transmission of the second public key to the other base station is permitted;

The invention provides an information transmission system for a sludge anaerobic digestion monitoring terminal with high deployment density, which comprises:

a unit for collecting anaerobic digestion information of sludge by a monitoring terminal having a communication function;

a unit for randomly accessing the first base station by the monitoring terminal and monitoring the system information and the synchronization signal transmitted by the second base station by the monitoring terminal;

means for transmitting, by a monitoring terminal to a first base station in response to random access to the first base station, a first public key for message transmission, wherein the monitoring terminal has a first secret key for message transmission, the first public key being used to decode data encrypted using the first secret key;

means for transmitting, by the monitoring terminal, a base station addition request to the first base station in response to monitoring the system information and the synchronization signal transmitted by the second base station;

means for transmitting, by a first base station, a base station addition notification to a second base station in response to receiving a base station addition request, wherein the base station addition notification includes a first public key for message transmission;

means for transmitting, by the second base station to the first base station, a base station addition acknowledgement message in response to receiving the base station addition notification, wherein the base station addition acknowledgement message includes a C-RNTI for the monitoring terminal and a random access preamble dedicated to the monitoring terminal;

means for sending, by the first base station, an RRC connection reconfiguration message to the monitoring terminal in response to receiving the base station addition confirmation message, wherein the RRC connection reconfiguration message includes a C-RNTI and a random access preamble dedicated to the monitoring terminal;

and means for transmitting, by the monitoring terminal, a random access preamble dedicated to the monitoring terminal to the second base station and simultaneously transmitting, by the monitoring terminal, a PUSCH message to the second base station in response to receiving the RRC connection reconfiguration message, wherein the PUSCH message includes at least two fields, wherein the first field includes a random access request that is not encrypted using the first secret key, and wherein the second field includes sludge anaerobic digestion information encrypted using the first secret key.

In a preferred embodiment, the information transmission system for the sludge anaerobic digestion monitoring terminal with high deployment density comprises:

means for sending, by the second base station, a random access completion message to the monitoring terminal in response to receiving the PUSCH message, and attempting, by the second base station, decoding, using the first public key, sludge anaerobic digestion information encrypted using the first secret key in the second field of the PUSCH message;

means for transmitting, by the second base station, sludge anaerobic digestion information encrypted using the first secret key to the first base station if it is determined that the sludge anaerobic digestion information encrypted using the first secret key in the second field of the PUSCH message can be decoded using the first public key;

means for transmitting, by the monitoring terminal, a second PUSCH message to the first base station in response to randomly accessing the first base station and in response to transmitting the first public key for message transmission to the first base station, wherein the second PUSCH message includes sludge anaerobic digestion information encrypted using the first secret key;

a unit for decoding, by the first base station, anaerobic digestion information of sludge encrypted using the first secret key in response to receiving anaerobic digestion information of sludge encrypted using the first secret key transmitted by the second base station and in response to receiving anaerobic digestion information of sludge encrypted using the first secret key transmitted by the monitoring terminal;

and the first base station is used for sending the decoded sludge anaerobic digestion information encrypted by using the first secret key to the sludge anaerobic digestion monitoring center.

means for sending, by the monitor terminal to the second base station, a second public key in response to receiving the random access completion message, while indicating, by the monitor terminal to the second base station, not to send the second public key to other base stations, wherein the monitor terminal has a second secret key for message transmission, the second public key being used to decode data encrypted using the second secret key;

means for, in response to receiving an indication not to transmit the second public key to other base stations, the second base station not to transmit the second secret key to the first base station;

a unit for broadcasting, by the monitoring terminal, sludge anaerobic digestion information encrypted using a second public key to the first base station and the second base station in response to sending the second public key for message transmission to the second base station;

means for attempting, by the first base station, to decode, in response to receiving the broadcasted sludge anaerobic digestion information encrypted using the second secret key, the broadcasted sludge anaerobic digestion information encrypted using the second secret key using the first public key;

means for discarding, by the first base station, the broadcasted sludge anaerobic digestion information encrypted using the second secret key if the first base station cannot decode the broadcasted sludge anaerobic digestion information using the first public key;

means for attempting, by the second base station, to decode the broadcasted sludge anaerobic digestion information encrypted using the second secret key using the second public key in response to receiving the broadcasted sludge anaerobic digestion information encrypted using the second secret key;

and a unit for transmitting the decoded sludge anaerobic digestion information encrypted by using the second secret key to a sludge anaerobic digestion monitoring center by the second base station.

means for sending, by the monitor terminal to the second base station, a second public key in response to receiving the random access completion message, and for instructing, by the monitor terminal to the second base station, the second public key to be sent to the other base stations, wherein the monitor terminal has a second secret key for message transmission, and the second public key is used to decode data encrypted using the second secret key;

means for transmitting, by the second base station, the second secret key to the first base station in response to receiving an indication to transmit the second public key to the other base station;

means for attempting, by the first base station, to decode the broadcasted sludge anaerobic digestion information encrypted using the second secret key using the first public key, and attempting, by the first base station, to decode the broadcasted sludge anaerobic digestion information encrypted using the second secret key using the second public key, in response to receiving the broadcasted sludge anaerobic digestion information encrypted using the second secret key;

means for transmitting, by the first base station, the sludge anaerobic digestion information encrypted with the second secret key to the second base station if the first base station successfully decodes the broadcasted sludge anaerobic digestion information encrypted with the second secret key using the second public key;

the second base station is used for decoding the sludge anaerobic digestion information encrypted by the second secret key by using the second public key in response to receiving the sludge anaerobic digestion information encrypted by using the second secret key and sent by the first base station;

means for transmitting, by the monitoring terminal, a random access preamble dedicated to the monitoring terminal to the second base station and simultaneously transmitting, by the monitoring terminal, a third PUSCH message to the second base station in response to receiving the RRC connection reconfiguration message, wherein the third PUSCH message includes at least two fields, wherein the first field includes a random access request that is not encrypted using the first secret key or the second secret key, wherein the second field includes a second public key and an indication that the second base station is not allowed to transmit the second public key to other base stations, wherein the monitoring terminal has the second secret key for message transmission, and the second public key is used to decode data encrypted using the second secret key;

means for transmitting, by the second base station, a random access completion message to the monitoring terminal in response to receiving the third PUSCH message;

means for broadcasting, by the monitoring terminal, sludge anaerobic digestion information encrypted using a second secret key to the first base station and the second base station in response to randomly accessing the first base station and in response to sending the first public key for message transmission to the first base station and in response to receiving a random access completion message;

a unit for transmitting the decoded sludge anaerobic digestion information encrypted by using the second secret key to a sludge anaerobic digestion monitoring center by the second base station;

means for transmitting, by the monitoring terminal, a random access preamble dedicated to the monitoring terminal to the second base station and simultaneously transmitting, by the monitoring terminal, a fourth PUSCH message to the second base station in response to receiving the RRC connection reconfiguration message, wherein the fourth PUSCH message includes at least two fields, wherein the first field includes a random access request that is not encrypted using the first secret key or the second secret key, wherein the second field includes a second public key and an indication that the second base station is allowed to transmit the second public key to other base stations, wherein the monitoring terminal has the second secret key for message transmission, and the second public key is used to decode data encrypted using the second secret key;

means for transmitting, by the second base station, a random access completion message to the monitoring terminal in response to receiving the fourth PUSCH message;

means for transmitting, by the second base station, the second secret key to the first base station in response to receiving an indication that transmission of the second public key to other base stations is permitted;

Compared with the prior art, the invention has the advantages that the sludge treatment needs the cooperative operation of a plurality of large-scale devices, meanwhile, the sludge treatment has strict requirements on reaction conditions due to the biochemical process, and the control of the reaction conditions and the monitoring of the running state of a machine are key steps of the sludge treatment. Due to the working environment, it is more and more difficult to require the staff to inspect on site, and an automatic monitoring system is urgently needed in the prior art. Aiming at the requirements of the prior art, the invention provides an information transmission method and system for a sludge anaerobic digestion monitoring terminal with high deployment density.

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 method of the present invention comprises the steps of:

step 101: collecting anaerobic digestion information of the sludge by a monitoring terminal with a communication function;

step 102: the monitoring terminal randomly accesses the first base station and monitors the system information and the synchronous signal sent by the second base station;

step 103: sending, by a monitoring terminal, a first public key for message transmission to a first base station in response to random access to the first base station, wherein the monitoring terminal has a first secret key for message transmission, and the first public key is used to decode data encrypted using the first secret key; it will be understood by those skilled in the art that asymmetric encryption algorithms are well known in the art, and any asymmetric encryption algorithm may be suitable for use in the context of the present application;

step 104: sending a base station adding request to the first base station by the monitoring terminal in response to monitoring the system information and the synchronization signal sent by the second base station;

step 105: in response to receiving a base station adding request, sending a base station adding notification to a second base station by a first base station, wherein the base station adding notification comprises a first public key used for message transmission;

step 106: responding to the received base station adding notification, and sending a base station adding confirmation message to the first base station by the second base station, wherein the base station adding confirmation message comprises a C-RNTI (radio network temporary identifier) used for monitoring the terminal and a random access preamble special for monitoring the terminal;

step 107: responding to the received base station addition confirmation message, and sending an RRC connection reconfiguration message to the monitoring terminal by the first base station, wherein the RRC connection reconfiguration message comprises a C-RNTI and a random access preamble special for the monitoring terminal;

step 108: and in response to receiving the RRC connection reconfiguration message, transmitting a random access preamble special for the monitoring terminal to the second base station by the monitoring terminal, and simultaneously transmitting a PUSCH message to the second base station by the monitoring terminal, wherein the PUSCH message comprises at least two fields, the first field comprises a random access request which is not encrypted by using the first secret key, and the second field comprises sludge anaerobic digestion information which is encrypted by using the first secret key.

It should be noted that, in addition to the encryption means proposed by our party, the present application does not exclude the use of other encryption means already used in the current wireless communication process, so even if the encryption means of the present application is cracked, the related information transmission can not be cracked by other people basically; furthermore, it will be appreciated by those skilled in the art that the key and public key system of the present application, in addition to being used for encryption, may also help the communication node to identify the destination of communication, which has a beneficial gain after heavy use of 5G pico base stations (a sewage treatment plant may have to deploy tens of dedicated pico base stations, since pico base stations are devices purchased by users, and the operator may then allow users to change certain parameters of pico base stations).

Further, the information transmission method for the sludge anaerobic digestion monitoring terminal with high deployment density comprises the following steps: in response to receiving the PUSCH message, sending, by the second base station, a random access completion message to the monitoring terminal, and attempting, by the second base station, to decode, using the first public key, sludge anaerobic digestion information encrypted using the first secret key in a second field of the PUSCH message; in one embodiment, since the first public key is sent by the first base station to the second base station, the second base station may determine that the first public key has an association relationship with the first base station, of course, the first public key may have a valid time with a certain time length, if the valid time exceeds, the first and second base stations may delete the first public key, and the second base station clears the first public key and has an association relationship with the first base station; if the sludge anaerobic digestion information encrypted by the first secret key in the second field of the PUSCH message can be decoded by using the first public key, the second base station sends the sludge anaerobic digestion information encrypted by using the first secret key to the first base station (namely, sends a ciphertext to the first base station); sending, by the monitoring terminal, a second PUSCH message to the first base station in response to randomly accessing the first base station and in response to sending the first public key for message transmission to the first base station, wherein the second PUSCH message includes sludge anaerobic digestion information encrypted using the first public key; in response to receiving the anaerobic digestion information of the sludge sent by the second base station and encrypted by using the first secret key, and in response to receiving the anaerobic digestion information of the sludge sent by the monitoring terminal and encrypted by using the first secret key, decoding, by the first base station, the anaerobic digestion information of the sludge encrypted by using the first secret key by using the first public key; and the first base station sends the decoded sludge anaerobic digestion information encrypted by using the first secret key to a sludge anaerobic digestion monitoring center.

Example 2

In a preferred embodiment, the information transmission method for the sludge anaerobic digestion monitoring terminal with high deployment density comprises the following steps: in response to receiving the random access completion message, the monitoring terminal sends a second public key to the second base station, and simultaneously the monitoring terminal indicates to the second base station not to send the second public key to other base stations, wherein the monitoring terminal has a second secret key for message transmission, and the second public key is used for decoding data encrypted by using the second secret key; in response to receiving an indication not to transmit the second public key to other base stations, the second base station does not transmit the second secret key to the first base station; in response to sending a second public key for message transmission to the second base station, broadcasting, by the monitoring terminal, sludge anaerobic digestion information encrypted with the second public key to the first base station and the second base station; in response to receiving the broadcasted sludge anaerobic digestion information encrypted by using the second secret key, attempting to decode the broadcasted sludge anaerobic digestion information encrypted by using the second secret key by the first base station by using the first public key; if the first base station cannot decode the broadcasted sludge anaerobic digestion information encrypted by using the second secret key by using the first public key, discarding the broadcasted sludge anaerobic digestion information encrypted by using the second secret key by using the first base station; attempting, by the second base station, to decode the broadcasted sludge anaerobic digestion information encrypted using the second secret key using the second public key in response to receiving the broadcasted sludge anaerobic digestion information encrypted using the second secret key; and the second base station sends the decoded sludge anaerobic digestion information encrypted by using the second secret key to a sludge anaerobic digestion monitoring center.

Further, the information transmission method for the sludge anaerobic digestion monitoring terminal with high deployment density comprises the following steps: in response to receiving the random access completion message, the monitoring terminal sends a second public key to the second base station, and simultaneously the monitoring terminal instructs the second base station to send the second public key to other base stations, wherein the monitoring terminal is provided with a second secret key for message transmission, and the second public key is used for decoding data encrypted by using the second secret key; transmitting, by the second base station, the second secret key to the first base station in response to receiving the indication to transmit the second public key to the other base station; in response to sending a second public key for message transmission to the second base station, broadcasting, by the monitoring terminal, sludge anaerobic digestion information encrypted with the second public key to the first base station and the second base station; in response to receiving the broadcasted sludge anaerobic digestion information encrypted by using the second secret key, attempting, by the first base station, to decode the broadcasted sludge anaerobic digestion information encrypted by using the second secret key by using the first public key, and attempting, by the first base station, to decode the broadcasted sludge anaerobic digestion information encrypted by using the second secret key by using the second public key; if the first base station successfully decodes the broadcasted anaerobic digestion information of the sludge encrypted by using the second secret key by using the second public key, the anaerobic digestion information of the sludge encrypted by using the second secret key is sent to the second base station by the first base station; attempting, by the second base station, to decode the broadcasted sludge anaerobic digestion information encrypted using the second secret key using the second public key in response to receiving the broadcasted sludge anaerobic digestion information encrypted using the second secret key; in response to receiving the anaerobic digestion information of the sludge sent by the first base station and encrypted by using the second secret key, decoding the anaerobic digestion information of the sludge encrypted by using the second secret key by using the second public key by the second base station; and the second base station sends the decoded sludge anaerobic digestion information encrypted by using the second secret key to a sludge anaerobic digestion monitoring center.

Example 3

In a preferred embodiment, the information transmission method for the sludge anaerobic digestion monitoring terminal with high deployment density comprises the following steps: in response to receiving the RRC connection reconfiguration message, transmitting, by the monitoring terminal, a random access preamble dedicated to the monitoring terminal to the second base station, and simultaneously transmitting, by the monitoring terminal, a third PUSCH message to the second base station, wherein the third PUSCH message includes at least two fields, wherein the first field includes a random access request that is not encrypted using the first secret key or the second secret key, wherein the second field includes a second public key and an indication that the second base station is not allowed to transmit the second public key to other base stations, wherein the monitoring terminal has the second secret key for message transmission, and the second public key is used to decode data encrypted using the second secret key; in response to receiving the third PUSCH message, sending, by the second base station, a random access completion message to the monitoring terminal; broadcasting, by the monitoring terminal, sludge anaerobic digestion information encrypted using a second secret key to the first base station and the second base station in response to randomly accessing the first base station and in response to transmitting the first public key for message transmission to the first base station and in response to receiving the random access completion message; in response to receiving the broadcasted sludge anaerobic digestion information encrypted by using the second secret key, attempting to decode the broadcasted sludge anaerobic digestion information encrypted by using the second secret key by the first base station by using the first public key; if the first base station cannot decode the broadcasted sludge anaerobic digestion information encrypted by using the second secret key by using the first public key, discarding the broadcasted sludge anaerobic digestion information encrypted by using the second secret key by using the first base station; attempting, by the second base station, to decode the broadcasted sludge anaerobic digestion information encrypted using the second secret key using the second public key in response to receiving the broadcasted sludge anaerobic digestion information encrypted using the second secret key; the second base station sends the decoded sludge anaerobic digestion information encrypted by using the second secret key to a sludge anaerobic digestion monitoring center; in response to receiving the RRC connection reconfiguration message, transmitting, by the monitoring terminal, a random access preamble dedicated to the monitoring terminal to the second base station, and simultaneously transmitting, by the monitoring terminal, a fourth PUSCH message to the second base station, wherein the fourth PUSCH message includes at least two fields, wherein the first field includes a random access request that is not encrypted using the first secret key or the second secret key, wherein the second field includes a second public key and an indication that the second base station is allowed to transmit the second public key to other base stations, wherein the monitoring terminal has a second secret key for message transmission, and the second public key is used to decode data encrypted using the second secret key; in response to receiving the fourth PUSCH message, sending, by the second base station, a random access completion message to the monitoring terminal; transmitting, by the second base station, the second secret key to the first base station in response to receiving the indication that transmission of the second public key to the other base station is permitted; broadcasting, by the monitoring terminal, sludge anaerobic digestion information encrypted using a second secret key to the first base station and the second base station in response to randomly accessing the first base station and in response to transmitting the first public key for message transmission to the first base station and in response to receiving the random access completion message; in response to receiving the broadcasted sludge anaerobic digestion information encrypted by using the second secret key, the broadcasted sludge anaerobic digestion information encrypted by using the second secret key is tried to be decoded by the first base station by using the first public key, and the broadcasted sludge anaerobic digestion information encrypted by using the second secret key is tried to be decoded by the first base station by using the second public key. If the first base station successfully decodes the broadcasted anaerobic digestion information of the sludge encrypted by using the second secret key by using the second public key, the anaerobic digestion information of the sludge encrypted by using the second secret key is sent to the second base station by the first base station; attempting, by the second base station, to decode the broadcasted sludge anaerobic digestion information encrypted using the second secret key using the second public key in response to receiving the broadcasted sludge anaerobic digestion information encrypted using the second secret key; in response to receiving the anaerobic digestion information of the sludge sent by the first base station and encrypted by using the second secret key, decoding the anaerobic digestion information of the sludge encrypted by using the second secret key by using the second public key by the second base station; and the second base station sends the decoded sludge anaerobic digestion information encrypted by using the second secret key to a sludge anaerobic digestion monitoring center.

Example 4

The invention also provides an information transmission system for the sludge anaerobic digestion monitoring terminal with high deployment density, which comprises the following components: a unit for collecting anaerobic digestion information of sludge by a monitoring terminal having a communication function; a unit for randomly accessing the first base station by the monitoring terminal and monitoring the system information and the synchronization signal transmitted by the second base station by the monitoring terminal; means for transmitting, by a monitoring terminal to a first base station in response to random access to the first base station, a first public key for message transmission, wherein the monitoring terminal has a first secret key for message transmission, the first public key being used to decode data encrypted using the first secret key; means for transmitting, by the monitoring terminal, a base station addition request to the first base station in response to monitoring the system information and the synchronization signal transmitted by the second base station; means for transmitting, by a first base station, a base station addition notification to a second base station in response to receiving a base station addition request, wherein the base station addition notification includes a first public key for message transmission; means for transmitting, by the second base station to the first base station, a base station addition acknowledgement message in response to receiving the base station addition notification, wherein the base station addition acknowledgement message includes a C-RNTI for the monitoring terminal and a random access preamble dedicated to the monitoring terminal; means for sending, by the first base station, an RRC connection reconfiguration message to the monitoring terminal in response to receiving the base station addition confirmation message, wherein the RRC connection reconfiguration message includes a C-RNTI and a random access preamble dedicated to the monitoring terminal; and means for transmitting, by the monitoring terminal, a random access preamble dedicated to the monitoring terminal to the second base station and simultaneously transmitting, by the monitoring terminal, a PUSCH message to the second base station in response to receiving the RRC connection reconfiguration message, wherein the PUSCH message includes at least two fields, wherein the first field includes a random access request that is not encrypted using the first secret key, and wherein the second field includes sludge anaerobic digestion information encrypted using the first secret key.

Further, the information transmission system for the sludge anaerobic digestion monitoring terminal with high deployment density comprises: means for sending, by the second base station, a random access completion message to the monitoring terminal in response to receiving the PUSCH message, and attempting, by the second base station, decoding, using the first public key, sludge anaerobic digestion information encrypted using the first secret key in the second field of the PUSCH message; means for transmitting, by the second base station, sludge anaerobic digestion information encrypted using the first secret key to the first base station if it is determined that the sludge anaerobic digestion information encrypted using the first secret key in the second field of the PUSCH message can be decoded using the first public key; means for transmitting, by the monitoring terminal, a second PUSCH message to the first base station in response to randomly accessing the first base station and in response to transmitting the first public key for message transmission to the first base station, wherein the second PUSCH message includes sludge anaerobic digestion information encrypted using the first secret key; a unit for decoding, by the first base station, anaerobic digestion information of sludge encrypted using the first secret key in response to receiving anaerobic digestion information of sludge encrypted using the first secret key transmitted by the second base station and in response to receiving anaerobic digestion information of sludge encrypted using the first secret key transmitted by the monitoring terminal; and the first base station is used for sending the decoded sludge anaerobic digestion information encrypted by using the first secret key to the sludge anaerobic digestion monitoring center.

Further, the information transmission system for the sludge anaerobic digestion monitoring terminal with high deployment density comprises: means for sending, by the monitor terminal to the second base station, a second public key in response to receiving the random access completion message, while indicating, by the monitor terminal to the second base station, not to send the second public key to other base stations, wherein the monitor terminal has a second secret key for message transmission, the second public key being used to decode data encrypted using the second secret key; means for, in response to receiving an indication not to transmit the second public key to other base stations, the second base station not to transmit the second secret key to the first base station; a unit for broadcasting, by the monitoring terminal, sludge anaerobic digestion information encrypted using a second public key to the first base station and the second base station in response to sending the second public key for message transmission to the second base station; means for attempting, by the first base station, to decode, in response to receiving the broadcasted sludge anaerobic digestion information encrypted using the second secret key, the broadcasted sludge anaerobic digestion information encrypted using the second secret key using the first public key; means for discarding, by the first base station, the broadcasted sludge anaerobic digestion information encrypted using the second secret key if the first base station cannot decode the broadcasted sludge anaerobic digestion information using the first public key; means for attempting, by the second base station, to decode the broadcasted sludge anaerobic digestion information encrypted using the second secret key using the second public key in response to receiving the broadcasted sludge anaerobic digestion information encrypted using the second secret key; and a unit for transmitting the decoded sludge anaerobic digestion information encrypted by using the second secret key to a sludge anaerobic digestion monitoring center by the second base station.

Further, the information transmission system for the sludge anaerobic digestion monitoring terminal with high deployment density comprises: means for sending, by the monitor terminal to the second base station, a second public key in response to receiving the random access completion message, and for instructing, by the monitor terminal to the second base station, the second public key to be sent to the other base stations, wherein the monitor terminal has a second secret key for message transmission, and the second public key is used to decode data encrypted using the second secret key; means for transmitting, by the second base station, the second secret key to the first base station in response to receiving an indication to transmit the second public key to the other base station; a unit for broadcasting, by the monitoring terminal, sludge anaerobic digestion information encrypted using a second public key to the first base station and the second base station in response to sending the second public key for message transmission to the second base station; means for attempting, by the first base station, to decode the broadcasted sludge anaerobic digestion information encrypted using the second secret key using the first public key, and attempting, by the first base station, to decode the broadcasted sludge anaerobic digestion information encrypted using the second secret key using the second public key, in response to receiving the broadcasted sludge anaerobic digestion information encrypted using the second secret key; means for transmitting, by the first base station, the sludge anaerobic digestion information encrypted with the second secret key to the second base station if the first base station successfully decodes the broadcasted sludge anaerobic digestion information encrypted with the second secret key using the second public key; means for attempting, by the second base station, to decode the broadcasted sludge anaerobic digestion information encrypted using the second secret key using the second public key in response to receiving the broadcasted sludge anaerobic digestion information encrypted using the second secret key; the second base station is used for decoding the sludge anaerobic digestion information encrypted by the second secret key by using the second public key in response to receiving the sludge anaerobic digestion information encrypted by using the second secret key and sent by the first base station; and a unit for transmitting the decoded sludge anaerobic digestion information encrypted by using the second secret key to a sludge anaerobic digestion monitoring center by the second base station.

Example 5

In a preferred embodiment, the information transmission system for the sludge anaerobic digestion monitoring terminal with high deployment density comprises: means for transmitting, by the monitoring terminal, a random access preamble dedicated to the monitoring terminal to the second base station and simultaneously transmitting, by the monitoring terminal, a third PUSCH message to the second base station in response to receiving the RRC connection reconfiguration message, wherein the third PUSCH message includes at least two fields, wherein the first field includes a random access request that is not encrypted using the first secret key or the second secret key, wherein the second field includes a second public key and an indication that the second base station is not allowed to transmit the second public key to other base stations, wherein the monitoring terminal has the second secret key for message transmission, and the second public key is used to decode data encrypted using the second secret key; means for transmitting, by the second base station, a random access completion message to the monitoring terminal in response to receiving the third PUSCH message; means for broadcasting, by the monitoring terminal, sludge anaerobic digestion information encrypted using a second secret key to the first base station and the second base station in response to randomly accessing the first base station and in response to sending the first public key for message transmission to the first base station and in response to receiving a random access completion message; means for attempting, by the first base station, to decode, in response to receiving the broadcasted sludge anaerobic digestion information encrypted using the second secret key, the broadcasted sludge anaerobic digestion information encrypted using the second secret key using the first public key; means for discarding, by the first base station, the broadcasted sludge anaerobic digestion information encrypted using the second secret key if the first base station cannot decode the broadcasted sludge anaerobic digestion information using the first public key; means for attempting, by the second base station, to decode the broadcasted sludge anaerobic digestion information encrypted using the second secret key using the second public key in response to receiving the broadcasted sludge anaerobic digestion information encrypted using the second secret key; a unit for transmitting the decoded sludge anaerobic digestion information encrypted by using the second secret key to a sludge anaerobic digestion monitoring center by the second base station; means for transmitting, by the monitoring terminal, a random access preamble dedicated to the monitoring terminal to the second base station and simultaneously transmitting, by the monitoring terminal, a fourth PUSCH message to the second base station in response to receiving the RRC connection reconfiguration message, wherein the fourth PUSCH message includes at least two fields, wherein the first field includes a random access request that is not encrypted using the first secret key or the second secret key, wherein the second field includes a second public key and an indication that the second base station is allowed to transmit the second public key to other base stations, wherein the monitoring terminal has the second secret key for message transmission, and the second public key is used to decode data encrypted using the second secret key; means for transmitting, by the second base station, a random access completion message to the monitoring terminal in response to receiving the fourth PUSCH message; means for transmitting, by the second base station, the second secret key to the first base station in response to receiving an indication that transmission of the second public key to other base stations is permitted; means for broadcasting, by the monitoring terminal, sludge anaerobic digestion information encrypted using a second secret key to the first base station and the second base station in response to randomly accessing the first base station and in response to sending the first public key for message transmission to the first base station and in response to receiving a random access completion message; means for attempting, by the first base station, to decode the broadcasted sludge anaerobic digestion information encrypted using the second secret key using the first public key, and attempting, by the first base station, to decode the broadcasted sludge anaerobic digestion information encrypted using the second secret key using the second public key, in response to receiving the broadcasted sludge anaerobic digestion information encrypted using the second secret key; means for transmitting, by the first base station, the sludge anaerobic digestion information encrypted with the second secret key to the second base station if the first base station successfully decodes the broadcasted sludge anaerobic digestion information encrypted with the second secret key using the second public key; means for attempting, by the second base station, to decode the broadcasted sludge anaerobic digestion information encrypted using the second secret key using the second public key in response to receiving the broadcasted sludge anaerobic digestion information encrypted using the second secret key; the second base station is used for decoding the sludge anaerobic digestion information encrypted by the second secret key by using the second public key in response to receiving the sludge anaerobic digestion information encrypted by using the second secret key and sent by the first base station; and a unit for transmitting the decoded sludge anaerobic digestion information encrypted by using the second secret key to a sludge anaerobic digestion monitoring center by the second 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. An information transmission method for a high deployment density sludge anaerobic digestion monitoring terminal is characterized by comprising the following steps: the information transmission method for the sludge anaerobic digestion monitoring terminal with high deployment density comprises the following steps:

sending, by a monitoring terminal to the first base station, a first public key for message transmission in response to random access to the first base station, wherein the monitoring terminal has a first secret key for message transmission, the first public key being used to decode data encrypted using the first secret key;

sending, by a monitoring terminal, a base station addition request to the first base station in response to monitoring system information and a synchronization signal sent by a second base station;

in response to receiving the base station adding request, sending, by the first base station, a base station adding notification to the second base station, wherein the base station adding notification includes a first public key for message transmission;

in response to receiving the base station addition notification, sending, by a second base station, a base station addition acknowledgement message to the first base station, wherein the base station addition acknowledgement message includes a C-RNTI for the monitoring terminal and a random access preamble dedicated to the monitoring terminal;

in response to receiving the RRC connection reconfiguration message, transmitting, by the monitoring terminal, a random access preamble dedicated to the monitoring terminal to the second base station, and simultaneously transmitting, by the monitoring terminal, a PUSCH message to the second base station, wherein the PUSCH message includes at least two fields, wherein a first field includes a random access request that is not encrypted with a first secret key, and wherein a second field includes sludge anaerobic digestion information encrypted with the first secret key,

sending, by the second base station, a random access completion message to the monitoring terminal in response to receiving the PUSCH message, and attempting, by the second base station, to decode, using the first public key, sludge anaerobic digestion information encrypted using a first secret key in a second field of the PUSCH message;

if the sludge anaerobic digestion information encrypted by the first secret key in the second field of the PUSCH message can be decoded by the first public key, the sludge anaerobic digestion information encrypted by the first secret key is sent to the first base station by the second base station;

transmitting, by a monitoring terminal, a second PUSCH message to the first base station in response to randomly accessing the first base station and in response to transmitting a first public key for message transmission to the first base station, wherein the second PUSCH message includes sludge anaerobic digestion information encrypted using a first secret key;

in response to receiving the sludge anaerobic digestion information which is sent by the second base station and encrypted by using the first secret key, and in response to receiving the sludge anaerobic digestion information which is sent by the monitoring terminal and encrypted by using the first secret key, the first base station decodes the sludge anaerobic digestion information encrypted by using the first secret key by using the first public key;

2. The information transmission method for the sludge anaerobic digestion monitoring terminal with high deployment density according to claim 1, characterized in that: the information transmission method for the sludge anaerobic digestion monitoring terminal with high deployment density comprises the following steps:

in response to receiving the random access completion message, sending, by the monitoring terminal, a second public key to the second base station, and simultaneously instructing, by the monitoring terminal to the second base station, not to send the second public key to other base stations, wherein the monitoring terminal has a second secret key for message transmission, and the second public key is used for decoding data encrypted using a second secret key;

in response to receiving an indication not to transmit the second public key to other base stations, the second base station not to transmit the second secret key to the first base station;

broadcasting, by a monitoring terminal, sludge anaerobic digestion information encrypted using a second secret key to the first base station and the second base station in response to sending the second public key for message transmission to the second base station;

in response to receiving the broadcasted sludge anaerobic digestion information encrypted by using the second secret key, the broadcasted sludge anaerobic digestion information encrypted by using the second secret key is tried to be decoded by the first base station by using the first public key;

discarding, by the first base station, the broadcasted sludge anaerobic digestion information encrypted with the second secret key if the first base station cannot decode the broadcasted sludge anaerobic digestion information encrypted with the second secret key using the first public key;

in response to receiving the broadcasted sludge anaerobic digestion information encrypted by using the second secret key, attempting to decode the broadcasted sludge anaerobic digestion information encrypted by using the second secret key by the second base station by using the second public key;

3. The information transmission method for the sludge anaerobic digestion monitoring terminal with high deployment density according to claim 2, characterized in that: the information transmission method for the sludge anaerobic digestion monitoring terminal with high deployment density comprises the following steps:

in response to receiving the random access completion message, sending, by the monitoring terminal, a second public key to the second base station, and simultaneously instructing, by the monitoring terminal, the second base station to send the second public key to other base stations, wherein the monitoring terminal has a second secret key for message transmission, and the second public key is used for decoding data encrypted using the second secret key;

transmitting, by a second base station, the second secret key to the first base station in response to receiving an indication to transmit the second public key to other base stations;

if the first base station successfully decodes the broadcasted anaerobic sludge digestion information encrypted by using the second secret key by using the second public key, the first base station sends the anaerobic sludge digestion information encrypted by using the second secret key to the second base station;

in response to receiving the sludge anaerobic digestion information which is sent by the first base station and encrypted by using the second secret key, decoding the sludge anaerobic digestion information which is encrypted by using the second secret key by using a second public key by using a second base station;

4. The information transmission method for the sludge anaerobic digestion monitoring terminal with high deployment density according to claim 3, characterized in that: the information transmission method for the sludge anaerobic digestion monitoring terminal with high deployment density comprises the following steps:

in response to receiving the RRC connection reconfiguration message, transmitting, by the monitoring terminal, a random access preamble dedicated to the monitoring terminal to the second base station, and simultaneously transmitting, by the monitoring terminal, a third PUSCH message to the second base station, wherein the third PUSCH message includes at least two fields, wherein a first field includes a random access request that is not encrypted using the first secret key or the second secret key, and wherein a second field includes a second public key and an indication that the second base station is not allowed to transmit the second public key to other base stations, wherein the monitoring terminal has the second secret key for message transmission, and the second public key is used to decode data encrypted using the second secret key;

sending, by the second base station, a random access completion message to the monitoring terminal in response to receiving the third PUSCH message;

broadcasting, by a monitoring terminal, sludge anaerobic digestion information encrypted using a second secret key to the first base station and the second base station in response to randomly accessing the first base station and in response to transmitting a first public key for message transmission to the first base station and in response to receiving the random access completion message;

in response to receiving the RRC connection reconfiguration message, transmitting, by the monitoring terminal, a random access preamble dedicated to the monitoring terminal to the second base station, and simultaneously transmitting, by the monitoring terminal, a fourth PUSCH message to the second base station, wherein the fourth PUSCH message includes at least two fields, wherein a first field includes a random access request that is not encrypted with a first secret key and is not encrypted with a second secret key, wherein a second field includes a second public key and an indication that the second base station is allowed to transmit the second public key to other base stations, wherein the monitoring terminal has the second secret key for message transmission, and the second public key is used to decode data encrypted with the second secret key;

sending, by the second base station, a random access completion message to the monitoring terminal in response to receiving the fourth PUSCH message;

transmitting, by a second base station, the second secret key to the first base station in response to receiving an indication that transmission of the second public key to other base stations is permitted;

5. An information transmission system for a high deployment density sludge anaerobic digestion monitoring terminal, characterized in that: the information transmission system for the sludge anaerobic digestion monitoring terminal with high deployment density comprises:

means for transmitting, by a monitoring terminal to the first base station, a first public key for message transmission in response to random access to the first base station, wherein the monitoring terminal has a first secret key for message transmission, the first public key being used to decode data encrypted using the first secret key;

means for transmitting, by a monitoring terminal, a base station addition request to the first base station in response to monitoring system information and a synchronization signal transmitted by a second base station;

means for transmitting, by a first base station, a base station addition notification to the second base station in response to receiving the base station addition request, wherein the base station addition notification includes a first public key for message transmission;

means for transmitting, by a second base station to the first base station, a base station addition acknowledgement message in response to receiving the base station addition notification, wherein the base station addition acknowledgement message includes a C-RNTI for the monitoring terminal and a random access preamble dedicated to the monitoring terminal;

means for sending, by a first base station, an RRC connection reconfiguration message to the monitoring terminal in response to receiving the base station addition confirmation message, wherein the RRC connection reconfiguration message includes a C-RNTI and a random access preamble dedicated to the monitoring terminal;

means for transmitting, by the monitoring terminal, a random access preamble dedicated to the monitoring terminal to the second base station and simultaneously transmitting, by the monitoring terminal, a PUSCH message to the second base station in response to receiving the RRC connection reconfiguration message, wherein the PUSCH message comprises at least two fields, wherein a first field comprises a random access request that is not encrypted with a first secret key, and wherein a second field comprises sludge anaerobic digestion information encrypted with the first secret key,

means for sending, by the second base station to the monitoring terminal, a random access complete message in response to receiving the PUSCH message, and attempting, by the second base station, to decode, using the first public key, sludge anaerobic digestion information encrypted using a first secret key in a second field of the PUSCH message;

means for transmitting, by a second base station, sludge anaerobic digestion information encrypted using a first secret key to a first base station if it is determined that sludge anaerobic digestion information encrypted using the first secret key in a second field of the PUSCH message can be decoded using the first public key;

means for transmitting, by a monitoring terminal, a second PUSCH message to the first base station in response to random access to the first base station and in response to transmitting a first public key for message transmission to the first base station, wherein the second PUSCH message includes sludge anaerobic digestion information encrypted using a first secret key;

means for decoding, by the first base station, the sludge anaerobic digestion information encrypted using the first secret key in response to receiving the sludge anaerobic digestion information encrypted using the first secret key transmitted by the second base station and in response to receiving the sludge anaerobic digestion information encrypted using the first secret key transmitted by the monitoring terminal;

and the first base station is used for sending the decoded sludge anaerobic digestion information encrypted by using the first secret key to a sludge anaerobic digestion monitoring center.

6. The information transmission system for the sludge anaerobic digestion monitoring terminal with high deployment density according to claim 5, characterized in that: the information transmission system for the sludge anaerobic digestion monitoring terminal with high deployment density comprises:

means for transmitting, by the monitor terminal to the second base station, a second public key in response to receiving the random access completion message, while indicating, by the monitor terminal to the second base station, not to transmit the second public key to other base stations, wherein the monitor terminal has a second secret key for message transmission, the second public key being used to decode data encrypted using a second secret key;

means for transmitting, by the second base station, the second public key to the first base station in response to receiving the indication to transmit the second public key to the other base stations;

means for broadcasting, by a monitoring terminal, sludge anaerobic digestion information encrypted using a second secret key to the first base station and the second base station in response to sending the second public key for message transmission to the second base station;

and the second base station is used for sending the decoded sludge anaerobic digestion information encrypted by using the second secret key to a sludge anaerobic digestion monitoring center.

7. The information transmission system for the sludge anaerobic digestion monitoring terminal with high deployment density according to claim 6, characterized in that: the information transmission system for the sludge anaerobic digestion monitoring terminal with high deployment density comprises:

means for transmitting, by the monitor terminal to the second base station, a second public key in response to receiving the random access completion message, while instructing, by the monitor terminal to the second base station, to transmit the second public key to other base stations, wherein the monitor terminal has a second secret key for message transmission, and the second public key is used to decode data encrypted using a second secret key;

means for transmitting, by a second base station, the second secret key to the first base station in response to receiving an indication to transmit the second public key to other base stations;

the method comprises the steps that in response to receiving sludge anaerobic digestion information which is sent by a first base station and encrypted by using a second secret key, the sludge anaerobic digestion information which is encrypted by using the second secret key is decoded by a second base station by using a second public key;

8. The information transmission system for the sludge anaerobic digestion monitoring terminal with high deployment density according to claim 7, characterized in that: the information transmission system for the sludge anaerobic digestion monitoring terminal with high deployment density comprises:

means for transmitting, by the monitoring terminal, a random access preamble dedicated to the monitoring terminal to the second base station and simultaneously transmitting, by the monitoring terminal, a third PUSCH message to the second base station in response to receiving the RRC connection reconfiguration message, wherein the third PUSCH message includes at least two fields, wherein a first field includes a random access request that is not encrypted using the first secret key and is not encrypted using the second secret key, wherein a second field includes a second public key and an indication that the second base station is not allowed to transmit the second public key to other base stations, wherein the monitoring terminal has the second secret key for message transmission, and the second public key is used to decode data encrypted using the second secret key;

means for broadcasting, by a monitoring terminal, sludge anaerobic digestion information encrypted using a second secret key to the first base station and the second base station in response to randomly accessing the first base station and in response to sending a first public key for message transmission to the first base station and in response to receiving the random access complete message;

a unit for sending the decoded sludge anaerobic digestion information encrypted by using the second secret key to a sludge anaerobic digestion monitoring center by the second base station;

means for transmitting, by the monitoring terminal, a random access preamble dedicated to the monitoring terminal to the second base station and simultaneously transmitting, by the monitoring terminal, a fourth PUSCH message to the second base station in response to receiving the RRC connection reconfiguration message, wherein the fourth PUSCH message includes at least two fields, wherein a first field includes a random access request that is not encrypted using the first secret key and is not encrypted using the second secret key, wherein a second field includes a second public key and an indication that the second base station is allowed to transmit the second public key to other base stations, wherein the monitoring terminal has the second secret key for message transmission, and the second public key is used to decode data encrypted using the second secret key;

means for transmitting, by a second base station, the second secret key to the first base station in response to receiving an indication that transmission of the second public key to other base stations is permitted;