CN110519339B - Device connection method, device, system and storage medium - Google Patents
Device connection method, device, system and storage medium Download PDFInfo
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- CN110519339B CN110519339B CN201910729977.XA CN201910729977A CN110519339B CN 110519339 B CN110519339 B CN 110519339B CN 201910729977 A CN201910729977 A CN 201910729977A CN 110519339 B CN110519339 B CN 110519339B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
- H04B3/544—Setting up communications; Call and signalling arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/14—Session management
- H04L67/141—Setup of application sessions
Abstract
The application relates to a device connection method, device, equipment, system and storage medium, and belongs to the technical field of electronic equipment. The method comprises the following steps: after the first device and the second device establish communication connection in a candidate single-pair mode, determining the type of a target medium for transmitting data between the first device and the second device; determining a target signal quality threshold of normal communication between the first device and the second device according to the type of the target medium; acquiring the signal quality of a communication signal between the first device and the second device; and determining whether to update the candidate single-pair mode for a new communication connection according to the comparison result of the signal quality and the target signal quality threshold. The technical scheme provided by the embodiment of the application can solve the problem that the communication connection between the PSE and the PD is difficult to ensure the normal communication between the PSE and the PD.
Description
Technical Field
The present application relates to the field of electronic device technologies, and in particular, to a device connection method, apparatus, device, system, and storage medium.
Background
Active Ethernet (POE) can use a medium for transmitting data to supply Power to a terminal Device, where the terminal Device in the POE may be referred to as a Powered Device (PD), and a Device for supplying Power to the terminal Device may be referred to as a Power Sourcing Equipment (PSE). In practical applications, the PSE may be a switch or the like, and the PD may be a telephone, a router, a monitoring camera or the like. In POE, PSE and PD can generally support establishing communication connections in a plurality of single-pair modes, wherein different single-pair modes have different data transmission rates. How to select an appropriate one-pair mode from a plurality of one-pair modes to establish a communication connection between the PSE and the PD is an important link in POE.
In the related art, the PSE may sequentially attempt to establish a communication connection with the PD in a plurality of single-pair modes supported by the PSE, and in the process of the attempt, when the PSE and the PD can successfully establish the communication connection in a certain single-pair mode, the PSE selects the single-pair mode as a finally adopted single-pair mode, and establishes the communication connection with the PD in the finally adopted single-pair mode.
However, being able to successfully establish a communication connection does not mean that the PSE and the PD can communicate normally, because, after the communication connection is successfully established, it is likely that the signal quality between the PSE and the PD cannot guarantee normal communication between the PSE and the PD. Since the successful establishment of the communication connection does not mean that the PSE and the PD can communicate normally, it is difficult to ensure the normal communication between the PSE and the PD in many cases.
Disclosure of Invention
Based on this, it is necessary to provide a device connection method, apparatus, device, system and storage medium for solving the problem that it is difficult for the communication connection between the PSE and the PD to ensure normal communication between the PSE and the PD.
In a first aspect, a device connection method is provided, where the device connection method is used in a first device of an active ethernet POE system, where the POE system includes the first device and a second device, and the method includes:
after the first device and the second device establish communication connection in a candidate single-pair mode, determining the type of a target medium for transmitting data between the first device and the second device;
determining a target signal quality threshold of normal communication between the first device and the second device according to the type of the target medium;
acquiring the signal quality of a communication signal between the first device and the second device;
and determining whether to update the candidate single-pair mode for a new communication connection according to the comparison result of the signal quality and the target signal quality threshold.
In one embodiment, the first device includes at least two wire pairs, the first device establishes a communication connection with the second device in the candidate single-pair mode using a first wire pair of the at least two wire pairs, and the determining the type of a target medium for transmitting data between the first device and the second device includes:
disconnecting communication connection with the second device based on the first wire pair in the candidate single-wire-pair mode;
setting one line pair of the at least two line pairs except the first line pair as a receiving line pair of the fast link pulse;
and determining the type of the target medium according to whether the receiving line can receive the fast link pulse transmitted by the second device.
In one embodiment, the determining the type of the target medium according to whether the receive line can receive the fast link pulse transmitted by the second device includes:
when the receiving line pair can receive the fast link pulse sent by the second equipment, determining the network cable type as the type of the target medium;
when the receiving line pair cannot receive the fast link pulse transmitted by the second device, the coaxial cable type is determined as the type of the target medium.
In one embodiment, the obtaining the signal quality of the communication signal between the first device and the second device includes:
reestablishing a communication connection with the second device in the candidate single-pair mode based on the first pair;
a signal quality of a communication signal between the first device and the second device is obtained.
In one embodiment, the determining the target signal quality threshold for normal communication between the first device and the second device according to the type of the target medium includes:
acquiring a corresponding relation between the type of the medium and a signal quality threshold;
and inquiring the corresponding relation according to the type of the target medium, and taking the inquired signal quality threshold corresponding to the type of the target medium as the target signal quality threshold.
In one embodiment, the determining whether to update the candidate single-pair mode for a new communication connection based on the comparison of the signal quality to the target signal quality threshold comprises:
when the signal quality is less than the target signal quality threshold, the candidate one-to-one mode is updated for a new communication connection.
In one embodiment, the updating the candidate single-pair mode includes:
disconnecting the communication connection with the second equipment in the candidate single-pair mode, and establishing the communication connection with the second equipment in the target single-pair mode;
wherein the data transmission rate of the target single-pair mode is less than the data transmission rate of the candidate single-pair mode.
In a second aspect, an apparatus connecting device is provided, where the apparatus is used in a first device of an active ethernet POE system, the POE system includes the first device and a second device, and the apparatus includes:
the first determining module is used for determining the type of a target medium used for data transmission between the first device and the second device after the first device and the second device establish communication connection in a candidate single-pair mode;
a second determining module, configured to determine, according to the type of the target medium, a target signal quality threshold for normal communication between the first device and the second device;
an obtaining module, configured to obtain a signal quality of a communication signal between the first device and the second device;
and a third determining module, configured to determine whether to update the candidate single-pair mode for a new communication connection according to a comparison result between the signal quality and the target signal quality threshold.
In a third aspect, there is provided a computer device comprising a memory storing a computer program and a processor implementing the steps of the method of any of the first aspects when the processor executes the computer program.
In a fourth aspect, an active POE system is provided, where the active POE system includes a first device and a second device, and the first device is configured to perform the device connection method in any one of the first aspects.
In one embodiment, the first device is a Power Supply Equipment (PSE), and the second device is a Powered Device (PD); alternatively, the first device is a PD and the second device is a PSE.
In a fifth aspect, there is provided a computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the method of any of the first aspects described above.
The beneficial effects brought by the technical scheme provided by the embodiment of the application at least comprise:
after the first device and the second device in the POE establish a communication connection based on the candidate single-pair mode, the first device determines the type of a target medium used for data transmission between the first device and the second device, determines a target signal quality threshold for normal communication between the first device and the second device according to the type of the target medium, and then determines whether to update the candidate single-pair mode according to a comparison result between the signal quality of a communication signal between the first device and the second device and the target signal quality threshold, so that after the first device and the second device in the POE establish a communication connection based on the candidate single-pair mode, whether to update the candidate single-pair mode can be determined according to the signal quality of the communication signal between the first device and the second device, so that when the signal quality of the communication signal between the first device and the second device is poor, the current single-pair mode can be updated to ensure normal communication between the first device and the second device after the single-pair mode is updated.
Drawings
FIG. 1 is a schematic diagram of a connection between a PSE and a PD;
FIG. 2 is a schematic diagram of another connection between a PSE and a PD;
FIG. 3 is a schematic diagram of an implementation environment provided by an embodiment of the present application;
fig. 4 is a flowchart of a device connection method according to an embodiment of the present application;
fig. 5 is a flowchart of another device connection method provided in an embodiment of the present application;
fig. 6 is a flowchart of another device connection method provided in an embodiment of the present application;
fig. 7 is a block diagram of an apparatus connecting device according to an embodiment of the present disclosure;
FIG. 8 is a block diagram of a computer device provided by an embodiment of the present application;
fig. 9 is a block diagram of a computer device according to an embodiment of the present application.
Detailed Description
To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
Active Ethernet (POE) may generally include a Powered Device (PD) and a Power Sourcing Equipment (PSE). The PSE may communicate with the PD via a data transmission medium (e.g., a network cable or a coaxial cable), or may supply power to the PD via the data transmission medium. Because the POE can realize power supply and communication simultaneously through the medium of transmission data, therefore, need not set up special power supply line for the PD in the POE, so its required cost of wiring is lower.
Fig. 1 is a schematic diagram of a connection between a PSE and a PD in a common POE.
As shown in fig. 1, a power supply component g, a first interface chip j1, a first line pair x11, and a second line pair x12 are provided in the PSE, the first interface chip j1 is connected to the first line pair x11 and the second line pair x12, one of a positive pole and a negative pole of the power supply component g is connected to the first line pair x11, and the other of the positive pole and the negative pole is connected to the second line pair x 12.
The PD is provided with a second interface chip j2, a powered component s, a first line pair x21 and a second line pair x22, and the second interface chip j2 and the powered component s are respectively connected with the first line pair x21 and the second line pair x 22.
The first line pair x11 and the first line pair x21 are connected by a mesh wire 1, and the second line pair x12 and the second line pair x22 are connected by a mesh wire 2.
The PSE and PD may exchange data via the first pair x11, the first pair x21, and the network cable 1 in a target single-pair mode, which is one of a plurality of single-pair modes supported by the PSE and PD. Specifically, the first interface chip j1 in the PSE may perform modulation processing on communication data in the PSE according to the target single-pair mode to obtain a first differential-mode signal, and transmit the first differential-mode signal to the first line pair x11, so as to transmit the first differential-mode signal to the second interface chip j2 in the PD through the first line pair x11, the network cable 1, and the first line pair x 21; similarly, the second interface chip j2 in the PD may perform modulation processing on the communication data in the PD according to the target single-pair mode to obtain a second differential mode signal, and transmit the second differential mode signal to the first line pair x21, so as to transmit the second differential mode signal to the first interface chip j1 in the PSE through the first line pair x21, the network wire 1, and the first line pair x 11.
The PSE and the PD may establish a power supply loop through the first line pair x11, the second line pair x12, the first line pair x21, the second line pair x22, the network wire 1 and the network wire 2, and transmit an electrical signal in a common mode on the power supply loop to supply power to the PD.
Fig. 2 is a schematic diagram of connection between a PSE and a PD in another conventional POE.
As shown in fig. 2, similarly to fig. 1, a power supply component g, a first interface chip j1, a first line pair x11 and a second line pair x12 are provided in the PSE, the first interface chip j1 is connected to the first line pair x11 and the second line pair x12 respectively, one of a positive pole and a negative pole of the power supply component g is connected to the first line pair x11, and the other pole is connected to the second line pair x 12.
The PD is provided with a second interface chip j2, a powered component s, a first line pair x21 and a second line pair x22, and the second interface chip j2 and the powered component s are respectively connected with the first line pair x21 and the second line pair x 22.
The PSE and PD may exchange data over the first pair x11, the first pair x21, and the coaxial cable t in a targeted single-pair mode. The data interaction process is similar to that of the PSE and PD in fig. 1, and the embodiment of the present application is not described herein again.
The PSE and the PD may establish a power supply loop through the first wire pair x11, the second wire pair x12, the first wire pair x21, the second wire pair x22, and the coaxial cable t and transmit an electrical signal on the power supply loop to power the PD. Specifically, as shown in fig. 2, the first line pair x11 and the second line pair x12 are both connected to a conversion module a, which can convert the common-mode electrical signal on the first line pair x11 and the second line pair x12 into a differential-mode electrical signal and transmit the differential-mode electrical signal to a conversion module b through the coaxial cable t, and the conversion module b can convert the differential-mode electrical signal into a common-mode electrical signal and transmit the common-mode electrical signal to the powered component s of the PD through the first line pair x21 and the second line pair x22, thereby powering the PD.
In the connection scheme shown in fig. 2, the electrical signal in the differential mode and the data signal in the differential mode are transmitted simultaneously on the coaxial cable t, but the frequency of the data signal is high, while the frequency of the electrical signal is low, and since there is isolation between the high-frequency and low-frequency signals, the electrical signal in the differential mode and the data signal in the differential mode on the coaxial cable t may not interfere with each other.
It should be noted that although both the PSE and PD of fig. 1 and 2 include two pairs, in practical applications the PSE and PD may include more than two pairs.
In practical applications, the PSE and the PD may generally support establishing communication connections in a plurality of single-pair modes, wherein different single-pair modes have different data transmission rates. For example, the PSE and PD may support establishing a communication connection in a 10M single-pair mode and a 100M single-pair mode, where the data transfer rate of the 10M single-pair mode is 10M data per unit time and the data transfer rate of the 100M single-pair mode is 100M data per unit time, as the name implies. How to select an appropriate one-pair mode from a plurality of one-pair modes to establish a communication connection between the PSE and the PD is an important link in POE.
In the related art, the PSE may attempt to establish a communication connection with the PD in the multiple single-pair modes supported by the PSE in order of the data transmission rate from high to low, for example, if the PSE supports a 10M single-pair mode and a 100M single-pair mode, the PSE may first attempt to establish a communication connection with the PD in the 100M single-pair mode, and then attempt to establish a communication connection with the PD in the 10M single-pair mode. In the course of the attempt, when the PSE and the PD can successfully establish the communication connection in a certain single-pair mode, the PSE selects the single-pair mode as a finally adopted single-pair mode, and establishes the communication connection with the PD in the finally adopted single-pair mode.
However, being able to successfully establish a communication connection does not mean that the PSE and the PD can communicate normally, because, after the communication connection is successfully established, it is likely that the signal quality of the communication signal between the PSE and the PD cannot guarantee normal communication between the PSE and the PD. Since the successful establishment of the communication connection does not mean that the PSE and the PD can communicate normally, it is difficult to ensure the normal communication between the PSE and the PD in many cases.
The embodiment of the application provides a device connection method which can ensure normal communication between a PSE and a PD. In the device connection method provided in this embodiment of the present application, after establishing a communication connection with a second device based on a candidate single-pair mode, a first device in a POE may determine a type of a target medium used for data transmission between the first device and the second device, determine a target signal quality threshold for normal communication between the first device and the second device according to the type of the target medium, and then determine whether to update a candidate single-pair mode according to a comparison result between a signal quality of a communication signal between the first device and the second device and the target signal quality threshold, so that after establishing a communication connection with the first device and the second device in the POE based on the candidate single-pair mode, the first device may determine whether to update the candidate single-pair mode according to the signal quality of the communication signal between the first device and the second device, so that when the signal quality of the communication signal between the first device and the second device is poor, the current single-pair mode can be updated to ensure normal communication between the first device and the second device after the single-pair mode is updated.
In the following, a brief description will be given of an implementation environment related to the device connection method provided in the embodiment of the present application.
As shown in fig. 3, the implementation environment may include a first device 11 and a second device 12, wherein the first device 11 may be one of a PSE and a PD, and the second device 12 may be the other of the PSE and the PD, in other words, when the first device 11 is the PSE, the second device 12 is the PD, and when the first device 11 is the PD, the second device 12 is the PSE. The first device 11 and the second device 12 may be connected as shown in fig. 1 or may be connected as shown in fig. 2.
Referring to fig. 4, a flowchart of a device connection method provided in an embodiment of the present application is shown, where the device connection method can be applied to the first device 11 in the implementation environment shown in fig. 3. As shown in fig. 4, the device connection method may include the steps of:
Optionally, if the single-pair modes supported by the first device and the second device include a 100M single-pair mode and a 10M single-pair mode, the candidate single-pair mode may be the 100M single-pair mode or the 10M single-pair mode. The types of the target medium may include a network cable type and a coaxial cable type, and when the type of the target medium is the network cable type, the first device 11 and the second device 12 in the implementation environment shown in fig. 3 are connected as shown in fig. 1, and when the type of the target medium is the coaxial type, the first device 11 and the second device 12 in the implementation environment shown in fig. 3 are connected as shown in fig. 2.
In a possible implementation manner, before step 401, the first device may attempt to establish a communication connection with the second device in multiple supported single-pair modes according to an order of a data transmission rate from high to low, and during the attempt, when the first device and the second device can successfully establish a communication connection in a certain single-pair mode, the first device determines the certain single-pair mode as a candidate single-pair mode, and establishes a communication connection with the second device in the candidate single-pair mode.
In another possible implementation manner, before step 401, the first device may measure a length of a target medium between the first device and the second device through a medium ranging signal, and the first device may determine a candidate single-pair mode according to the length of the target medium, for example, when the length of the target medium is between 300 meters and 800 meters, the first device may determine a 10M single-pair mode as the candidate single-pair mode, when the length of the target medium is below 300 meters, the first device may determine a 100M single-pair mode as the candidate single-pair mode, and after determining the candidate single-pair mode, the first device may establish a communication connection with the second device in the candidate single-pair mode.
In general, because the impedance, attenuation, and the like of communication signals in different media are different, the signal quality thresholds for normal communication between devices can be guaranteed to be different for different media. Therefore, in step 402, the first device may determine a target signal quality threshold that can ensure normal communication between the first device and the second device according to the type of the target medium.
In an embodiment of the present application, the first device may store at least one correspondence, where each correspondence includes a media type and a signal quality threshold. In step 402, the first device may obtain the at least one corresponding relationship, and query the at least one corresponding relationship according to the type of the target medium, and then the first device may use the queried signal quality threshold corresponding to the type of the target medium as the target signal quality threshold.
Table 1 illustrates an exemplary at least one correspondence.
TABLE 1
| Type of media | Signal quality threshold |
| Network cable type | A1 |
| Coaxial cable type | A2 |
As can be seen from table 1, the signal quality threshold corresponding to the network cable type is a1, and the signal quality threshold corresponding to the coaxial cable type is a 2. If the type of the target medium determined by the first device is the network cable type in step 401, in step 402, the first device may obtain a signal quality threshold a1 corresponding to the network cable type according to the network cable type lookup table 1, and use the signal quality threshold a1 as the above-mentioned target signal quality threshold.
In step 403, the first device obtains a signal quality of a communication signal between the first device and the second device.
The first device may read the signal quality from a standard register of its own interface chip, for example, if the first device is a PSE and is provided with the first interface chip j1 shown in fig. 1 or fig. 2, the first device may read the signal quality from the first interface chip j1, and if the first device is a PD and is provided with the second interface chip j2 shown in fig. 1 or fig. 2, the first device may read the signal quality from the second interface chip j 2. Alternatively, the signal quality may be characterized by a signal-to-noise ratio of the communication signal.
Optionally, the value of the signal quality may be 0,1,2,3,4, and 5, where the signal quality of the communication signal is the weakest when the value of the signal quality is 0, and the signal quality of the communication signal is the strongest when the value of the signal quality is 5, and the signal quality of the communication signal is stronger when the value of the signal quality is larger, and correspondingly, the value of the target signal quality threshold may also be 0,1,2,3,4, and 5.
When the signal quality of the communication signal between the first device and the second device is greater than or equal to the target signal quality threshold, it indicates that the first device and the second device can normally communicate in the candidate single-pair mode, and therefore, in this case, the first device may not update the candidate single-pair mode, in other words, the first device may maintain the communication connection established between the first device and the second device in the candidate single-pair mode.
When the signal quality of the communication signal between the first device and the second device is less than the target signal quality threshold, it indicates that the first device and the second device cannot normally communicate in the candidate single-pair mode, and therefore, in this case, the first device may update the candidate single-pair mode, so that the first device and the second device can normally communicate after the candidate single-pair mode is updated.
Optionally, the updating, by the first device, the candidate single-pair mode may be: the first device disconnects the communication connection with the second device in the candidate single-pair mode, and establishes the communication connection with the second device in the target single-pair mode, wherein the data transmission rate of the target single-pair mode is smaller than the data transmission rate of the candidate single-pair mode. For example, if the candidate single-pair mode is the 100M single-pair mode, the first device may update the candidate single-pair mode by: the first device disconnects the communication with the second device in the 100M single-pair mode and establishes the communication with the second device in the 10M single-pair mode.
In the device connection method provided in this embodiment of the present application, after establishing a communication connection with a second device based on a candidate single-pair mode, a first device in a POE determines a type of a target medium used for data transmission between the first device and the second device, and determines a target signal quality threshold for normal communication between the first device and the second device according to the type of the target medium, and then determines whether to update a candidate single-pair mode according to a comparison result between a signal quality of a communication signal between the first device and the second device and the target signal quality threshold, so that after establishing a communication connection with the first device and the second device in the POE based on the candidate single-pair mode, it may be determined whether to update the candidate single-pair mode according to the signal quality of the communication signal between the first device and the second device, so that when the signal quality of the communication signal between the first device and the second device is poor, the current single-pair mode can be updated to ensure normal communication between the first device and the second device after the single-pair mode is updated.
Referring to fig. 5, a flowchart of another device connection method provided in the embodiment of the present application is shown, where the device connection method can be applied to the first device 11 in the implementation environment shown in fig. 3. As shown in fig. 5, on the basis of the above-described embodiment, step 401 may include:
The first device comprises at least two line pairs, and the first device can utilize a first line pair of the at least two line pairs to establish communication connection with the second device in the candidate single-pair mode. For example, as shown in fig. 1 or fig. 2, the first device may be provided with two wire pairs, a first wire pair and a second wire pair, respectively, wherein the first device may establish a communication connection with the second device in the candidate single-pair mode by using the first wire pair. In step 4011, the first device may disconnect a communication connection with the second device based on the first pair in a candidate single-pair mode.
After the first device disconnects the communication connection with the second device in the candidate single-pair mode, the port mode can be switched to the normal IEEE network mode, in this case, the second device cannot establish the communication connection with the first device according to the single-pair mode, and therefore, the second device can also adaptively switch the port mode to the normal IEEE network mode.
After switching the port mode to the normal IEEE network mode, the first device may set one of at least two pairs of lines included in itself, except for the first pair, as a receiving pair of the FLP. For example, as shown in fig. 1 or fig. 2, the first device may be provided with two line pairs, namely, a first line pair and a second line pair, where the first device establishes a communication connection with the second device in the candidate single-line-pair mode by using the first line pair, and then in step 4012, the first device may set the second line pair as a receiving line pair of the FLP.
The FLP is a pulse used for performing mode negotiation in an ordinary IEEE network, and when two end devices (for example, a first device and a second device in this embodiment) to establish a communication connection are both in an ordinary IEEE network mode, and the two end devices do not establish a communication connection successfully, both end devices may send the FLP to an opposite end at a certain line pair at a certain time interval, and at the same time, the two end devices may also receive the FLP sent by the opposite end using another line pair.
In practical application, the line pair for transmitting the FLP and the line pair for receiving the FLP may be fixed, or may be switched in a polling manner. Under the condition of fixed setting, the device always sends the FLP to the opposite terminal in one set line pair, and receives the FLP sent by the opposite terminal in the other set line pair. In the polling switching case, the device may sequentially transmit the FLP to the peer in at least two line pairs included therein, and receive the FLP transmitted by the peer in another line pair.
In step 4012, the first device may fixedly set one line pair other than the first line pair as a receiving line pair of the FLP, that is, the first device will always receive the FLP sent by the second device in the one line pair other than the first line pair. Meanwhile, the second device may poll for switching the transmitting line pair of the FLP and the receiving line pair of the FLP.
For example, as shown in fig. 1 or fig. 2, the first device may be provided with two line pairs, namely a first line pair and a second line pair, and the first device may set the second line pair as a receiving line pair of the FLP, that is, the first device will always receive the FLP sent by the second device on the second line pair; the second device may also be provided with two line pairs, which are a first line pair and a second line pair respectively, and the second device may poll and switch a transmitting line pair of the FLP and a receiving line pair of the FLP, that is, the second device may sequentially transmit the FLP to the first device over the first line pair and the second line pair, when the second device transmits the FLP to the first device over the first line pair, the second device may receive the FLP transmitted by the first device over the second line pair, and when the second device transmits the FLP to the first device over the second line pair, the second device may receive the FLP transmitted by the first device over the first line pair.
When the type of the target medium between the first device and the second device is a network cable type, each of the pair of the first device and the second device is connected with one of the pair of the opposite terminal through the network cable. For example, as shown in fig. 1, a first wire pair in a first device is connected to a first wire pair in a second device via a mesh wire, and a second wire pair in the first device is connected to a second wire pair in the second device via the mesh wire.
Therefore, when the second device is polling to switch the transmitting line pair of the FLP, the receiving line pair of the first device can receive the FLP transmitted by the second device if the second device is just switching to the line pair connected to the receiving line pair of the first device. For example, as shown in fig. 1, the receiving line pair of the first device may be a second line pair, and when the second device transmits the FLP using the first line pair, the receiving line pair of the first device cannot receive the FLP because the first line pair of the second device and the second line pair of the first device are not connected to each other, but when the second device switches the second line pair to the transmitting line pair of the FLP, the receiving line pair of the first device can receive the FLP because the second line pair of the second device and the second line pair of the first device are connected to each other.
When the type of the target medium between the first device and the second device is a coaxial cable type, only the pair for establishing a single pair connection among the first device and the second device is connected to each other through the coaxial cable. For example, as shown in fig. 2, a first wire pair in a first device is used to establish a single pair wire connection with a first wire pair in a second device, and thus is connected by a coaxial cable, while a second wire pair in the first device is not used to establish a single pair wire connection with a second wire pair in the second device, and thus is not connected.
Therefore, when the first device sets one pair other than the first pair (a pair not used for establishing a single pair line connection) as a receiving line pair of the FLP, the first device will not receive the FLP transmitted by the second device because the one pair other than the first pair is not connected to a pair in the second device. For example, as shown in fig. 2, the receiving line pair of the first device may be a second line pair, and since the second line pair of the first device is not used to establish a single-pair line connection, it is not connected to both the first line pair and the second line pair of the second device, so the receiving line pair of the first device cannot receive the FLP sent by the first device.
As can be seen from the above description, when the receiving line pair of the first device is capable of receiving the FLP transmitted by the second device, the first device may determine the network cable type as the type of the target medium, and when the receiving line pair of the first device is not capable of receiving the FLP transmitted by the second device, the first device may determine the coaxial cable type as the type of the target medium.
Optionally, the first device may determine whether the first device receives the FLP sent by the second device by reading indication information in an auto-negotiation page in a standard status register of the interface chip.
In the device connection method provided by the embodiment of the application, the first device may determine the type of the target medium used for data transmission between the first device and the second device through the interface chip arranged on the first device, without using an additional device or an additional circuit, so that the hardware overhead for determining the type of the target medium is low, and the implementation is simple.
Referring to fig. 6, a flowchart of another device connection method provided in the embodiment of the present application is shown, where the device connection method can be applied to the first device 11 in the implementation environment shown in fig. 3. As shown in fig. 6, on the basis of the above-described embodiment, step 403 may include:
After determining the type of the target medium by the above-described steps 4011 to 4013, the first device may reestablish the communication connection with the second device in the candidate single-pair mode based on the first pair.
Referring to fig. 7, a block diagram of a device connection apparatus 700 according to an embodiment of the present disclosure is shown, where the device connection apparatus 700 may be configured in the first device 11 shown in fig. 1. As shown in fig. 7, the device connecting apparatus 700 may include: a first determining module 701, a second determining module 702, an obtaining module 703 and a third determining module 704.
The first determining module 701 is configured to determine a type of a target medium used for data transmission between the first device and the second device after the first device and the second device establish a communication connection in a candidate single-pair mode.
The second determining module 702 is configured to determine a target signal quality threshold for normal communication between the first device and the second device according to the type of the target medium.
The obtaining module 703 is configured to obtain a signal quality of a communication signal between the first device and the second device.
The third determining module 704 is configured to determine whether to update the candidate one-pair mode for a new communication connection according to the comparison result between the signal quality and the target signal quality threshold.
In an embodiment of the present application, the first device includes at least two line pairs, the first device establishes a communication connection with the second device in the candidate single-pair mode by using a first line pair of the at least two line pairs, and the first determining module 701 is specifically configured to: disconnecting communication connection with the second device based on the first wire pair in the candidate single-wire-pair mode; setting one line pair of the at least two line pairs except the first line pair as a receiving line pair of the FLP; and determining the type of the target medium according to whether the receiving line can receive the FLP sent by the second device.
In an embodiment of the present application, the first determining module 701 is specifically configured to: when the receiving line pair can receive the FLP sent by the second device, determining the network cable type as the type of the target medium; and when the receiving line pair cannot receive the FLP transmitted by the second device, determining the coaxial cable type as the type of the target medium.
In an embodiment of the present application, the obtaining module 703 is specifically configured to: reestablishing a communication connection with the second device in the candidate single-pair mode based on the first pair; a signal quality of a communication signal between the first device and the second device is obtained.
In an embodiment of the present application, the second determining module 702 is specifically configured to: acquiring a corresponding relation between the type of the medium and a signal quality threshold; and inquiring the corresponding relation according to the type of the target medium, and taking the inquired signal quality threshold corresponding to the type of the target medium as the target signal quality threshold.
In an embodiment of the present application, the third determining module 703 is specifically configured to: the candidate single-pair mode is not updated when the signal quality is greater than or equal to the target signal quality threshold.
In an embodiment of the present application, the third determining module 703 is specifically configured to: and updating the candidate single-pair mode when the signal quality is less than the target signal quality threshold.
In an embodiment of the present application, the third determining module 703 is specifically configured to: disconnecting the communication connection with the second equipment in the candidate single-pair mode, and establishing the communication connection with the second equipment in the target single-pair mode; wherein the data transmission rate of the target single-pair mode is less than the data transmission rate of the candidate single-pair mode.
The device connection apparatus provided in the embodiment of the present application can implement the method embodiment, and the implementation principle and the technical effect are similar, which are not described herein again.
For the specific definition of the device connection apparatus, reference may be made to the above definition of the device connection method, which is not described herein again. The respective modules in the above-described device connection apparatus may be implemented in whole or in part by software, hardware, and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment of the present application, a computer device is provided, which may be a PSE, and the internal structure thereof may be as shown in fig. 8. The computer device comprises a processor, a memory, a power supply component and a first interface chip which are connected through a system bus, the computer device further comprises a first line pair and a second line pair (not shown in figure 8), the first interface chip is respectively connected with the first line pair and the second line pair, one pole of a positive pole and a negative pole of the power supply component is connected with the first line pair, and the other pole of the power supply component is connected with the second line pair. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The computer program is executed by a processor to implement a device connection method.
Those skilled in the art will appreciate that the architecture shown in fig. 8 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
In one embodiment of the present application, a computer device is provided, which may be a PD, and its internal structure diagram may be as shown in fig. 9. The computer device comprises a processor, a memory, a power receiving component and a second interface chip which are connected through a system bus, and further comprises a first line pair and a second line pair, wherein the second interface chip and the power receiving component are respectively connected with the first line pair and the second line pair. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The computer program is executed by a processor to implement a device connection method.
Those skilled in the art will appreciate that the architecture shown in fig. 9 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
In one embodiment of the present application, a computer device is provided, which may be a PSE or a PD, the computer device comprising a memory and a processor, the memory having stored therein a computer program, the processor implementing the following steps when executing the computer program:
after the first device and the second device establish communication connection in a candidate single-pair mode, determining the type of a target medium for transmitting data between the first device and the second device;
determining a target signal quality threshold of normal communication between the first device and the second device according to the type of the target medium;
acquiring the signal quality of a communication signal between the first device and the second device;
and determining whether to update the candidate single-pair mode for a new communication connection according to the comparison result of the signal quality and the target signal quality threshold.
The first device comprises at least two wire pairs, the first device establishes a communication connection with the second device in the candidate single-pair mode by using a first wire pair of the at least two wire pairs, and in one embodiment of the application, the processor, when executing the computer program, further implements the following steps: disconnecting communication connection with the second device based on the first wire pair in the candidate single-wire-pair mode; setting one line pair of the at least two line pairs except the first line pair as a receiving line pair of the FLP; and determining the type of the target medium according to whether the receiving line can receive the FLP sent by the second device.
In one embodiment of the application, the processor when executing the computer program further performs the steps of: when the receiving line pair can receive the FLP sent by the second device, determining the network cable type as the type of the target medium; and when the receiving line pair cannot receive the FLP transmitted by the second device, determining the coaxial cable type as the type of the target medium.
In one embodiment of the application, the processor when executing the computer program further performs the steps of: reestablishing a communication connection with the second device in the candidate single-pair mode based on the first pair; a signal quality of a communication signal between the first device and the second device is obtained.
In one embodiment of the application, the processor when executing the computer program further performs the steps of: acquiring a corresponding relation between the type of the medium and a signal quality threshold; and inquiring the corresponding relation according to the type of the target medium, and taking the inquired signal quality threshold corresponding to the type of the target medium as the target signal quality threshold.
In one embodiment of the application, the processor when executing the computer program further performs the steps of: when the signal quality is greater than or equal to the target signal quality threshold, the candidate single-pair mode is not updated.
In one embodiment of the application, the processor when executing the computer program further performs the steps of: when the signal quality is less than the target signal quality threshold, the candidate one-to-one mode is updated for a new communication connection.
In one embodiment of the application, the processor when executing the computer program further performs the steps of: disconnecting the communication connection with the second equipment in the candidate single-pair mode, and establishing the communication connection with the second equipment in the target single-pair mode; wherein the data transmission rate of the target single-pair mode is less than the data transmission rate of the candidate single-pair mode.
The implementation principle and technical effect of the computer device provided by the embodiment of the present application are similar to those of the method embodiment described above, and are not described herein again.
In an embodiment of the application, a computer-readable storage medium is provided, on which a computer program is stored, which computer program, when being executed by a processor, carries out the steps of:
after the first device and the second device establish communication connection in a candidate single-pair mode, determining the type of a target medium for transmitting data between the first device and the second device;
determining a target signal quality threshold of normal communication between the first device and the second device according to the type of the target medium;
acquiring the signal quality of a communication signal between the first device and the second device;
and determining whether to update the candidate single-pair mode for a new communication connection according to the comparison result of the signal quality and the target signal quality threshold.
The first device comprising at least two wire pairs, the first device establishing a communication connection with the second device in the candidate single-pair mode using a first wire pair of the at least two wire pairs, in one embodiment of the application, the computer program when executed by the processor further implements the steps of: disconnecting communication connection with the second device based on the first wire pair in the candidate single-wire-pair mode; setting one line pair of the at least two line pairs except the first line pair as a receiving line pair of the FLP; and determining the type of the target medium according to whether the receiving line can receive the FLP sent by the second device.
In one embodiment of the application, the computer program when executed by the processor further performs the steps of: when the receiving line pair can receive the FLP sent by the second device, determining the network cable type as the type of the target medium; and when the receiving line pair cannot receive the FLP transmitted by the second device, determining the coaxial cable type as the type of the target medium.
In one embodiment of the application, the computer program when executed by the processor further performs the steps of: reestablishing a communication connection with the second device in the candidate single-pair mode based on the first pair; a signal quality of a communication signal between the first device and the second device is obtained.
In one embodiment of the application, the computer program when executed by the processor further performs the steps of: acquiring a corresponding relation between the type of the medium and a signal quality threshold; and inquiring the corresponding relation according to the type of the target medium, and taking the inquired signal quality threshold corresponding to the type of the target medium as the target signal quality threshold.
In one embodiment of the application, the computer program when executed by the processor further performs the steps of: when the signal quality is greater than or equal to the target signal quality threshold, the candidate single-pair mode is not updated.
In one embodiment of the application, the computer program when executed by the processor further performs the steps of: when the signal quality is less than the target signal quality threshold, the candidate one-to-one mode is updated for a new communication connection.
In one embodiment of the application, the computer program when executed by the processor further performs the steps of: disconnecting the communication connection with the second equipment in the candidate single-pair mode, and establishing the communication connection with the second equipment in the target single-pair mode; wherein the data transmission rate of the target single-pair mode is less than the data transmission rate of the candidate single-pair mode.
The implementation principle and technical effect of the computer-readable storage medium provided by this embodiment are similar to those of the above-described method embodiment, and are not described herein again.
The embodiment of the present application further provides a POE system, where the POE system includes a first device and a second device, where the first device is configured to execute the device connection method provided in the embodiment of the present application. Wherein the first device may be one of the PSE and PD and the second device may be the other of the PSE and PD, in other words, when the first device is the PSE, the second device is the PD, and when the first device is the PD, the second device is the PSE.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (11)
1. A device connection method is used for an active Ethernet (POE) system, wherein the POE system comprises a first device and a second device, and the method comprises the following steps:
after the first device and the second device establish communication connection in a candidate single-pair mode, determining the type of a target medium used for data transmission between the first device and the second device; the types of the target medium comprise a network cable type and a coaxial cable type;
determining a target signal quality threshold of normal communication between the first device and the second device according to the type of the target medium;
reading the signal quality of a communication signal between the first device and the second device from a standard register of an interface chip of the first device;
and determining whether the first device and the second device can normally communicate in the candidate single-pair mode according to the comparison result of the signal quality and the target signal quality threshold, and updating the candidate single-pair mode to perform new communication connection when the first device and the second device cannot normally communicate in the candidate single-pair mode.
2. The method of claim 1, wherein the first device comprises at least two wire pairs, wherein the first device establishes a communication connection with the second device in the candidate single-pair mode using a first wire pair of the at least two wire pairs, and wherein the determining the type of the target medium for transmitting data between the first device and the second device comprises:
disconnecting a communication connection with the second device based on the first wire pair in the candidate single-wire-pair mode;
setting one of the at least two line pairs other than the first line pair as a receiving line pair for a fast link pulse;
and determining the type of the target medium according to whether the receiving line can receive the fast link pulse sent by the second equipment.
3. The method of claim 2, wherein determining the type of the target medium according to whether the receive line can receive the fast link pulse transmitted by the second device comprises:
when the receiving line pair can receive the fast link pulse sent by the second equipment, determining the network cable type as the type of the target medium;
and when the receiving line pair cannot receive the fast link pulse transmitted by the second equipment, determining the coaxial cable type as the type of the target medium.
4. The method of claim 2, wherein obtaining the signal quality of the communication signal between the first device and the second device comprises:
reestablishing a communication connection with the second device in the candidate single-pair mode based on the first pair;
a signal quality of a communication signal between the first device and the second device is obtained.
5. The method of claim 1, wherein determining the target signal quality threshold for normal communication between the first device and the second device according to the type of the target medium comprises:
acquiring a corresponding relation between the type of the medium and a signal quality threshold;
and inquiring the corresponding relation according to the type of the target medium, and taking the inquired signal quality threshold corresponding to the type of the target medium as the target signal quality threshold.
6. The method of claim 1, wherein the determining whether to update the candidate single-pair mode for a new communication connection based on the comparison of the signal quality to the target signal quality threshold comprises:
updating the candidate single-pair mode for a new communication connection when the signal quality is less than the target signal quality threshold.
7. The method of claim 1 or 6, wherein the updating the candidate single-pair mode comprises:
disconnecting the communication connection with the second equipment in the candidate single-pair mode, and establishing the communication connection with the second equipment in the target single-pair mode;
wherein a data transmission rate of the target single-pair mode is less than a data transmission rate of the candidate single-pair mode.
8. An apparatus for connecting devices, wherein the apparatus is used in a first device of a POE system over active ethernet, the POE system includes the first device and a second device, and the apparatus includes:
a first determining module, configured to determine a type of a target medium used for data transmission between the first device and the second device after the first device and the second device establish a communication connection in a candidate single-pair mode; the types of the target medium comprise a network cable type and a coaxial cable type;
a second determining module, configured to determine, according to the type of the target medium, a target signal quality threshold for normal communication between the first device and the second device;
the acquisition module is used for reading the signal quality of a communication signal between the first device and the second device from a standard register of an interface chip of the first device;
a third determining module, configured to determine, according to a comparison result between the signal quality and the target signal quality threshold, whether the first device and the second device may normally communicate in the candidate single-pair mode, and update the candidate single-pair mode to perform a new communication connection when the first device and the second device may not normally communicate in the candidate single-pair mode.
9. A computer device comprising a memory and a processor, the memory storing a computer program, wherein the processor implements the steps of the method of any one of claims 1 to 7 when executing the computer program.
10. An active POE system, comprising a first device and a second device, wherein the first device is configured to perform the device connection method according to any one of claims 1 to 7.
11. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 7.
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