Different-frequency network bridge link double-span breakpoint-free network transmission method

Abstract

The invention relates to the technical field of network communication, and provides a pilot-frequency network bridge link double-span breakpoint-free network transmission method, which comprises a plurality of AP (Access Point) and STA (or RT) communication equipment with a WIFI-network bridge function, and the network transmission method of the plurality of communication equipment comprises the following steps: when the AP hotspot of the current communication equipment is opened by adopting a certain frequency, the AP hotspot of the current communication equipment is opened by adopting a certain frequency, and the AP hotspot of the current communication equipment is opened by adopting a certain frequency; and the STA module of the subsequent communication equipment accesses the previous communication equipment in a point-to-multipoint mode, the CU control unit of the accessed subsequent communication equipment forwards and continuously accesses the other communication equipment in an AP hotspot mode of other frequencies, and a chain link is formed through cyclic access in sequence to realize wireless efficient serial connection between the communication equipment. The network transmission architecture mode has the beneficial effects that the network transmission architecture mode adopts various mature general standard network technologies for organic integration, so that the interruption of the whole link caused by a relay node fault is avoided, and the network transmission architecture mode is simple, efficient and relatively low in cost.

Description

Technical Field

[0001] The present invention relates to the technical field of network communication. Specifically, it relates to a network transmission method with a double-span and breakpoint-free link for different-frequency wireless bridges. Background Art

[0002] Constrained by multiple factors such as the transmission distance due to the environment and the performance of the device itself, the intermediate node devices of wireless chain links often need to use multi-hop wireless relaying to achieve long-distance communication transmission. In the traditional single-frequency relaying mode, the throughput rate of the device decreases by 50% per hop, the delay doubles, and the return throughput rate after 7 hops is less than 1% (0.78125%, and it will be even lower due to problems such as co-frequency interference in reality). The delay increases to 128 times that of a single hop between devices. Calculated theoretically based on the throughput rate of the end device being 1 Gbps (usually less than 0.5 Gbps in reality) and the no-load delay of the air interface between wireless devices being 10 ms (usually exceeding 20 ms in reality), the highest throughput rate of the data transmitted back to the first node device is 7.8 Mbps, and the delay is as high as 1.28 seconds, which cannot meet the data transmission requirements of high-definition video and voice with high requirements for throughput rate and delay, let alone meet the millisecond-level industrial control requirements with higher real-time requirements. At the same time, co-frequency transmission can only use omnidirectional antennas with a short transmission distance, a small vertical angle, and a large electromagnetic interference to the surrounding area. In mountainous and hilly areas with large terrain undulations and long distances between nodes, it is often impossible to effectively connect between nodes or the transmission efficiency will be greatly reduced. To solve the above problems, it is often necessary to significantly increase the transmission power of the device to increase the signal strength.

[0003] Refer to Figure 1 , when using directional antennas and different-frequency wireless relaying for networking, since problems such as co-frequency interference in the return transmission are better overcome, the transmission throughput rate is high and the delay can be significantly reduced. It can also better solve problems such as the short transmission distance between co-frequency devices, poor signal due to large height differences, and large electromagnetic interference of omnidirectional antennas to the surrounding environment. However, directional antennas require the device to set different frequencies, which is slightly more complex to install than omnidirectional antennas. Simple pre-job installation training is required for personnel before installation. There are also problems such as failures of relay nodes due to the use of different frequency points, and the inability to connect between adjacent two nodes due to different frequencies, resulting in the interruption of the entire link.

[0004] Refer to Figure 2 , when using different frequencies and a fault occurs in the intermediate relay node, the two nodes on both sides cannot be interconnected due to different frequencies. Although two directional antennas can be used for co-frequency transmission, since the backlobes of some antennas cannot be well suppressed, when the backlobe power is relatively high, if the distance between the two antennas is relatively close, the two antennas will affect each other, resulting in a significant reduction in the transmission efficiency of the device. Summary of the Invention

[0005] This application proposes a network transmission method with dual - cross and breakpoint - free for different - frequency bridge links. This network transmission architecture mode organically integrates a variety of mature general - standard network technologies, thereby avoiding the interruption of the entire link caused by relay node failures, effectively avoiding network frequency band interference problems, and ensuring that even after equipment failures or network interruptions, the connection can be quickly restored, realizing simple, efficient, and stable wireless network transmission with relatively low costs.

[0006] For this reason, this application provides a network transmission method with dual - cross and breakpoint - free for different - frequency bridge links, including multiple communication devices with WIFI - bridge functions such as APs and STAs. The network transmission methods of multiple said communication devices are as follows: When the AP hotspot of the previous communication device is turned on at a certain frequency, the STA module of the subsequent communication device accesses the previous communication device in a point - to - multi - point manner. The CU control unit of the accessed subsequent communication device forwards and then continues to access other communication devices in the form of an AP hotspot at other frequencies. This cycle of access forms a chain - like link to achieve efficient wireless cascading between communication devices.

[0007] By adopting the above - mentioned technical solution: multiple said communication devices form a chain - like link in network transmission. When a certain node in the link is interrupted due to a failure, the standby AP can be automatically started to connect to the STA of the previous node, thereby avoiding the interruption of the entire link caused by relay node failures and ensuring normal network transmission.

[0008] Preferably, the communication device further includes a power supply, a memory, and multiple communication interfaces connected to the CU control unit.

[0009] By adopting the above - mentioned technical solution: the power supply can supply power to the entire communication device, and multiple communication interfaces are used to connect to external network devices. The CU control unit can coordinate and control the AP and STA.

[0010] Preferably, the communication device further includes a lightning protection module connected to the CU control unit, and the communication interfaces include SFP, RJ - 45, 485, or 232 interfaces.

[0011] By adopting the above - mentioned technical solution: the lightning protection module can prevent accumulation and is wired - connected to other external network - using devices through SFP optical ports and network ports such as RJ - 45.

[0012] Preferably, in the chain - like link, the same AP simultaneously connects to two adjacent STAs in the subsequent link, and the above - mentioned STAs simultaneously connect to two AP hotspots. One of the APs is used as a backup. If the AP being connected fails, the backup AP is triggered to start and connect to the STA, and the frequencies of the two nodes AP and STA of the same communication device are swapped.

[0013] By adopting the above technical solution: in multi-point relay of a chain - like link, wireless remote transmission and continuous hop - by - hop transmission can be carried out when a certain relay node fails. Then, the same AP needs to be connected to two adjacent STAs in the subsequent link at the same time, and the above STAs also need to be connected to two AP hotspots at the same time. Considering that a single STA can only transfer data with one AP at a time, the other AP exists as a backup method. If the currently connected AP fails, the other AP is triggered to start and connect to the STA, thus avoiding the interruption of the entire link caused by the failure of the relay node. In this solution, the frequencies of every two nodes, AP and STA, need to be swapped, and the above switching is automatically realized by the system according to the device connection status. Preferably, the AP adopts a 2.4G / 5G dual - band wireless AP.

[0014] By adopting the above technical solution: the access capacity is larger, the coverage range is wider, which is conducive to network communication.

[0015] Preferably, the CU control unit has a channel management mechanism that can automatically coordinate the channels of the frequency bands to be used by the STA and the AP on the defined control frequency band. By adopting the above technical solution: the CU control unit has a channel management mechanism, which can automatically coordinate the frequency bands required by the STA and the AP on the defined control frequency band. The core purpose of this mechanism is to improve the frequency band allocation efficiency of the network and reduce the possibility of frequency band interference. The CU control unit will perform dynamic frequency band selection according to different network conditions and automatically coordinate the use of frequency bands according to the following several indicators: (1) Traffic load monitoring: When the traffic of a certain frequency band is too high, the CU control unit will guide the STA and AP modules to switch to a frequency band with lighter load to avoid network congestion.

[0016] (2) Signal strength evaluation: The CU will monitor the signal strength of each frequency band. If the signal quality of a certain frequency band is insufficient or deteriorates, the frequency band of the relevant device will be switched to a frequency band with higher signal quality.

[0017] (3) Frequency band interference situation: If it is found that a certain frequency band is affected by external interference or noise, the CU control unit will actively adjust the device to a frequency band that is less likely to be interfered with to ensure stable transmission.

[0018] The CU control unit will dynamically coordinate the use of frequency bands according to the above conditions and achieve the efficient and stable operation of the network through collaborative management, without manual intervention, improving the adaptive ability and fault - tolerance ability of the entire system.

[0019] Preferably, the CU control unit stores the identification information of the upstream and downstream APs and automatically restores the original link connection status after the device is restarted or the network is interrupted.

[0020] By adopting the above technical solution: The CU control unit is not only responsible for frequency band management, but also stores the identification information of the upstream and downstream APs, and can automatically restore the original link connection state after the device restarts or the network is interrupted. This mechanism can greatly shorten the recovery time and reduce the waiting time of the client after the network is interrupted or the device is restarted. Specifically, the CU control unit records the connection information between the device and the AP, including the identifier of the AP, the used frequency band, and its routing information. After the system restarts, the CU control unit can quickly match and restore the original network connection, ensuring that the device can continue to operate in a seamless connection state without manual reconfiguration.

[0021] Preferably, after the STA module and the AP module each monitor the signal disappearance for a certain defined time, they coordinate at the control frequency channel to shorten the time required for channel switching.

[0022] By adopting the above technical solution: To further improve the switching efficiency of the system, when the STA module and the AP module monitor the signal disappearance and reach a certain defined time, the frequency band coordination mechanism will be activated to perform channel switching to shorten the required switching time. In specific implementation, the STA module and the AP module will monitor the signal strength according to the set time threshold. Once the signal disappears or the quality drops below the threshold, and after a preset waiting time, the STA module and the AP module will automatically start the channel switching process, and the CU control unit will quickly select a new frequency band for frequency band switching. Such a design can significantly reduce the delay during the switching process and ensure the stability and smoothness of the network connection.

[0023] The working principle and beneficial effects of this application are as follows: 1. Multiple communication devices in this application form a chain-like link in network transmission. When a certain node in the link is interrupted due to a fault, the standby AP can be automatically started to connect to the STA of the previous node, thus avoiding the interruption of the entire link caused by the failure of the relay node and ensuring normal network transmission.

[0024] 2. In multi-point relay of the chain-like link, for wireless long-distance transmission and when a certain relay node fails, it can continue to jump and transmit. Then, the same AP needs to connect to two adjacent STAs in the subsequent link at the same time, and the above-mentioned STA also needs to connect to two AP hotspots at the same time. Considering that one STA can only transmit data with one AP at the same time, the other AP exists as a backup method. If the currently connected AP fails, the other AP will be triggered to start and connect to the STA, thus avoiding the interruption of the entire link caused by the failure of the relay node. In this solution, the frequencies of every two nodes' AP and STA need to be swapped, and the above switching is automatically realized by the system according to the device connection status. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] Figure 1 Schematic diagram of a network transmission framework in one of the prior art methods; Figure 2 Schematic diagram of a network transmission framework in another prior art method; Figure 3 Structural framework diagram of a communication device according to an embodiment of the present application; Figure 4 Schematic diagram of the network transmission framework structure according to an embodiment of the present application. Specific embodiments

[0027] Next, in conjunction with the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of the present invention.

[0028] As Figure 3 - Figure 4 shown, in this embodiment, two wireless mode WIFI modules, namely an AP (ACCESS POINT access hotspot) and an STA (STATION access terminal, slave station, which can also be referred to as an RT, Remote Terminal) with WIFI-Bridge functions respectively, are integrated and controlled, integrated and managed by a CU control unit (central control unit) to form an organic whole, and can be wired-connected to other external network-using devices through network ports such as SFP optical ports and RJ-45. When the AP hotspot is turned on, the STA modules of other similar devices can access in a point-to-multipoint manner, and then are forwarded by the CU control unit and continue to access other similar STA devices in the form of an AP hotspot at other frequencies, thereby realizing efficient wireless connection between devices; after the WIFI-AP hotspot function is turned on, it can also support the networking of peripheral terminal devices such as mobile phones at the same time. This network transmission architecture mode organically integrates a variety of mature general standard network technologies, is simple and efficient, and has a low cost.

[0029] Specifically, a network transmission method with a non-breakpoint double-span of different-frequency bridge links in this embodiment includes multiple communication devices with WIFI-Bridge functions of AP and STA, and the network transmission methods of the multiple communication devices are as follows: When the AP hotspot of a previous communication device is turned on at a certain frequency, the STA module of a subsequent communication device accesses the previous communication device in a point-to-multipoint manner. The CU control unit of the accessed subsequent communication device forwards and then continues to access other communication devices in the form of an AP hotspot at another frequency. This cycle of access forms a chain-like link to achieve efficient wireless connection between communication devices.

[0030] The basic principle of this embodiment: Multiple said communication devices form a chain-like link in network transmission. When a certain node in the link is interrupted due to a fault, a standby AP can be automatically started to connect to the STA of the previous node, thus avoiding the interruption of the entire link caused by the failure of the relay node and ensuring normal network transmission.

[0031] The communication device also includes a power supply, a memory, and multiple communication interfaces connected to the CU control unit. The power supply can supply power to the entire communication device, and the multiple communication interfaces are used to connect to external network devices. The CU control unit can coordinate and control the AP and STA.

[0032] The communication device also includes a lightning protection module connected to the CU control unit. The communication interfaces include SFP, RJ-45, 485, or 232 interfaces. The lightning protection module can prevent accumulation and is connected to other external network-using devices through SFP optical ports and network ports such as RJ-45 in a wired manner.

[0033] In the chain-like link, the same AP simultaneously connects to two adjacent STAs in the subsequent link. The above STAs also simultaneously connect to two AP hotspots. One of the APs is used as a backup. If the currently connected AP fails, the backup AP is triggered to start and connect to the STA, and the frequencies of the two nodes AP and STA of the same communication device are swapped.

[0034] In multi-point relay of the chain-like link, for wireless long-distance transmission and the ability to continue hopping transmission when a certain relay node fails, the same AP needs to simultaneously connect to two adjacent STAs in the subsequent link. The above STAs also need to simultaneously connect to two AP hotspots. Considering that one STA can only transfer data with one AP at the same time, the other AP exists in the form of a backup. If the currently connected AP fails, the other AP is triggered to start and connect to the STA, thus avoiding the interruption of the entire link caused by the failure of the relay node. In this solution, the frequencies of every two nodes AP and STA need to be swapped, and the above switching is automatically realized by the system according to the device connection status. The AP in this embodiment uses a 2.4G / 5G dual-band wireless AP, which has a larger access capacity and a wider coverage range, facilitating network communication.

[0035] The CU control unit in this embodiment has a channel management mechanism that can automatically coordinate the channels of the frequency bands to be used by the STA and the AP on the defined control frequency band. The CU control unit has a channel management mechanism that can automatically coordinate the frequency bands required by the STA and the AP on the defined control frequency band. The core purpose of this mechanism is to improve the frequency band allocation efficiency of the network and reduce the possibility of frequency band interference. The CU control unit will perform dynamic frequency band selection according to different network conditions and automatically coordinate the use of frequency bands based on the following indicators: (1) Traffic load monitoring: When the traffic on a certain frequency band is too high, the CU control unit will guide the STA and AP modules to switch to a frequency band with lighter load to avoid network congestion.

[0036] (2) Signal strength evaluation: The CU will monitor the signal strength of each frequency band. If the signal quality of a certain frequency band is insufficient or deteriorates, the frequency band of the relevant device will be switched to a frequency band with higher signal quality.

[0037] (3) Frequency band interference situation: If it is found that a certain frequency band is affected by external interference or noise, the CU control unit will actively adjust the device to a frequency band that is less likely to be interfered with to ensure stable transmission.

[0038] The CU control unit will dynamically coordinate the use of frequency bands according to the above conditions and achieve efficient and stable operation of the network through collaborative management, without manual intervention, improving the adaptive ability and fault tolerance of the entire system.

[0039] The upstream and downstream AP identification information is stored in the CU control unit, and after the device is restarted or the network is interrupted, the original link connection status will be automatically restored. The CU control unit is not only responsible for frequency band management, but also stores the identification information of the upstream and downstream APs, and can automatically restore the original link connection status after the device is restarted or the network is interrupted. This mechanism can greatly shorten the recovery time and reduce the waiting time of the client after the network is interrupted or the device is restarted. Specifically, the CU control unit will record the connection information between the device and the AP, including the identifier of the AP, the frequency band used and its routing information. After the system is restarted, the CU control unit can quickly match and restore the original network connection to ensure that the device can continue to operate in a seamless connection state without manual reconfiguration.

[0040] Among them, the STA module and the AP module each monitor the signal disappearance for a certain defined time, and then coordinate on the control frequency channel to shorten the time required for channel switching. To further improve the switching efficiency of the system, when the STA module and the AP module detect the signal disappearance and reach a certain defined time, they will activate the frequency band coordination mechanism to perform channel switching to shorten the required switching time. In specific implementation, the STA module and the AP module will monitor the signal strength according to the set time threshold. Once the signal disappears or the quality drops below the threshold, and after a preset waiting time, the STA module and the AP module will automatically initiate the channel switching process, and the CU control unit will quickly select a new frequency band for frequency band switching. Such a design can significantly reduce the delay during the switching process and ensure the stability and smoothness of the network connection.

[0041] Integrating the STA and AP dual modules in a device and implementing chain - like link switching through the CU control unit and the cache system requires optimization from three aspects: network architecture design, data forwarding logic, and system coordination. The following is the comprehensive implementation strategy based on the existing technical solutions: In this embodiment, the STA and AP dual modules are integrated in a device, and chain - like link switching is achieved through the CU control unit and the cache system. Optimization is carried out from three aspects: network architecture design, data forwarding logic, and system coordination. The following is the comprehensive implementation strategy based on the existing technical solutions: I. Hardware architecture design ‌Deployment of dual - radio - frequency modules‌: The device needs to integrate independent AP and STA radio - frequency modules, which are respectively used for forward connection (STA mode) and backward networking (AP mode).

[0042] The CU control unit uniformly manages the radio - frequency parameters of the two modules (such as channel selection, power adjustment) to avoid co - channel interference.

[0043] ‌Integration of the CU control unit and the cache system‌: The CU control unit needs to have built - in dual network interfaces, which are respectively bound to the MAC addresses of the AP and STA modules and assigned independent IP addresses (such as AP interface 192.168.2.1 / 24, STA interface 192.168.1.100 / 24).

[0044] The cache adopts a queue mechanism to temporarily store the uplink data from the STA interface and the downlink data from the AP interface, realizing traffic shaping and buffering of burst data.

[0045] II. Data forwarding logic ‌Configuration of routing strategy‌: Set a static routing table in the CU control unit to specify that: Packets from the STA interface are default - forwarded to the subnet corresponding to the AP interface (for example, when the destination IP is 192.168.2.0 / 24, they are sent through the AP interface).

[0046] Reverse traffic realizes cross - subnet transmission through NAT conversion (for example, converting the data source IP received by the AP interface to the STA interface IP).

[0047] Protocol - layer transparent transmission optimization: Frame filtering is enabled at the link layer, allowing only data with specific MAC addresses to pass through, reducing the processing load of the CU control unit.

[0048] The TCP packet - sticking processing mechanism is adopted at the transport layer to ensure data integrity in multi - hop transmission.

[0049] III. System Switching and Fault Tolerance Link - state detection: The CU control unit periodically sends heartbeat packets to the front - end and back - end devices, and judges link interruption through response timeout.

[0050] When the previous - stage AP is detected to be disconnected, the STA module automatically scans for available networks and attempts to reconnect (supporting multi - group SSID memory and priority sorting).

[0051] Cache cooperation strategy: During link interruption, the cache system temporarily stores data according to the FIFO principle, and the maximum capacity is dynamically adjusted according to hardware resources.

[0052] After reconnecting, high - priority data (such as frames marked as urgent by QoS) is preferentially transmitted.

[0053] IV. Program Implementation Process (Taking ESP8266 as an Example) cppCopy Code / / Pseudocode example of CU control logicvoid loop() { / / Detect STA connection status if (WiFi.status() != WL_CONNECTED) { WiFi.reconnect(); / / Automatically reconnect to the previous - stage AP‌:ml - citation{ref = "5" data = "citationList"} delay(500); } / / Process client requests from the AP interface WiFiClient client = server.available(); if (client) { String request = client.readString(); forwardToSTA(request); / / Forward to the upstream through STA:ml-citation{ref="4" data="citationList"} } / / Process data received by STA if (STA_hasData()) { String data = STA_read(); forwardToAP(data); / / Broadcast to the downstream through AP:ml-citation{ref="4" data="citationList"} } } V. Performance Optimization Directions Radio Frequency Collaboration: Use a dual-band module (2.4GHz + 5GHz), with the AP and STA operating on different frequency bands respectively to improve throughput.

[0054] Cache Hierarchy: Divide the cache area into high / low priority levels, and prioritize the processing of data with high real-time requirements (such as video streams).

[0055] Protocol Optimization: Implement a simplified routing protocol (such as RPL) at the application layer to support dynamic path selection and load balancing.

[0056] This solution uniformly schedules the dual-module and cache resources through the CU control unit, enabling stable and low-latency chain transmission, and is applicable to scenarios such as industrial IoT multi-hop networks and emergency communication relays.

[0057] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A network transmission method for a cross-frequency bridge link with no breakpoint in both directions, characterized in that, A communication device including multiple APs and STAs with WIFI-bridge functions, and the network transmission method of multiple said communication devices is as follows: When the AP hotspot of the previous communication device is turned on at a certain frequency, the STA module of the subsequent communication device accesses the previous communication device in a point-to-multipoint manner. The CU control unit of the accessed subsequent communication device forwards and then continues to access other communication devices in the form of an AP hotspot at another frequency. This cycle of access forms a chain-like link to achieve efficient wireless cascading between communication devices.

2. The network transmission method with seamless dual-span for different-frequency bridge links according to claim 1, characterized in that The communication device further includes a power supply, a memory, and multiple communication interfaces connected to the CU control unit.

3. A network transmission method for a cross-frequency bridge link with no breakpoint in dual-span according to claim 2, characterized in that The communication device further includes a lightning protection module connected to the CU control unit, and the communication interfaces include SFP, RJ-45, 485, or 232 interfaces.

4. A network transmission method with no breakpoint in the double-span of an inter-frequency bridge link according to claim 1, characterized in that, In the chain-like link, the same AP simultaneously connects to two adjacent STAs in the subsequent link. The above STAs simultaneously connect to two AP hotspots, and one of the APs serves as a backup. If the AP being connected fails, the backup AP is triggered to start and connect to the STA.

5. A network transmission method for a cross-frequency bridge link with double-span and no breakpoint according to claim 4, characterized in that, The AP uses a 2.4G / 5G dual-band wireless AP.

6. A network transmission method for a cross-frequency bridge link with double-span and no breakpoint according to claim 4, characterized in that, The CU control unit has a channel management mechanism that can automatically coordinate the channels of the frequencies to be used by the STA and the AP on the defined control frequency band.

7. A network transmission method for seamless handover of different frequency bridge links according to claim 6, characterized in that The CU control unit stores the upstream and downstream AP identification information, and automatically restores the original link connection state after the device is restarted or the network is interrupted.

8. A network transmission method for a cross-frequency bridge link with no breakpoint in dual-span according to claim 6, characterized in that, After the STA module and the AP module each detect that the signal has disappeared for a defined time, they coordinate on the control frequency channel to shorten the time required for channel switching.

9. A network transmission method for a heterogenous frequency bridge link with double-span and no breakpoint according to claim 7, characterized in that A static routing table is set in the CU control unit, specifying that: data packets from the STA interface are default forwarded to the subnet corresponding to the AP interface; Reverse traffic realizes cross-subnet transmission through NAT conversion; Frame filtering is enabled at the link layer, and only data with specific MAC addresses is allowed to pass; The TCP sticky packet processing mechanism is adopted at the transport layer.

10. A network transmission method for a heterogenous frequency bridge link with double-span and no breakpoint according to claim 7, characterized in that The CU control unit periodically sends heartbeat packets to the front-end and back-end devices, and judges whether the link is interrupted by response timeout; When it is detected that the previous-level AP is disconnected, the STA module automatically scans for available networks and attempts to reconnect; During the link interruption period, the caching system temporarily stores data according to the FIFO principle, and the maximum capacity is dynamically adjusted according to the hardware resources; High-priority data is preferentially transmitted after the link is restored.

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