CN109474539B - QoS control method for satellite frame relay network - Google Patents
QoS control method for satellite frame relay network Download PDFInfo
- Publication number
- CN109474539B CN109474539B CN201710806710.7A CN201710806710A CN109474539B CN 109474539 B CN109474539 B CN 109474539B CN 201710806710 A CN201710806710 A CN 201710806710A CN 109474539 B CN109474539 B CN 109474539B
- Authority
- CN
- China
- Prior art keywords
- bandwidth
- port
- data
- qos control
- master station
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/18578—Satellite systems for providing broadband data service to individual earth stations
- H04B7/18584—Arrangements for data networking, i.e. for data packet routing, for congestion control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/70—Admission control; Resource allocation
- H04L47/80—Actions related to the user profile or the type of traffic
- H04L47/805—QOS or priority aware
-
- 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
- H04L67/50—Network services
- H04L67/60—Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources
- H04L67/61—Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources taking into account QoS or priority requirements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/24—Negotiating SLA [Service Level Agreement]; Negotiating QoS [Quality of Service]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Quality & Reliability (AREA)
- Computing Systems (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- Aviation & Aerospace Engineering (AREA)
- General Physics & Mathematics (AREA)
- Radio Relay Systems (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The application discloses a QoS control method of a satellite frame relay network, wherein the satellite frame relay network comprises a plurality of types of transmission links. According to the QoS control method, in data downlink transmission, downlink bandwidth QoS control is executed at a first port of a service master station, priority QoS control is executed at a second port of the service master station, and first downlink service data QoS control is executed at a shunting master station; in the data uplink transmission, the uplink bandwidth QoS control is executed at the third port of the small service station, and the uplink service data QoS control is executed at the small shunting station.
Description
Technical Field
The present application relates to the field of network QoS (quality of service) assurance, and more particularly, to a method for controlling QoS in a satellite frame relay network.
Background
In network transmission, a QoS control method is generally adopted to guarantee the transmission quality of data. In a general network QoS control technique, QoS control is generally performed at a single node or port, and network parameter configuration for performing QoS control is generally preset.
However, when a network structure such as a satellite frame relay network (particularly, a satellite frame relay network employing a multi-link structure such as that described in chinese patent application No. 201710165785.1) becomes complicated, performing QoS control only at a single node or port cannot guarantee actual data transmission quality.
Furthermore, in a satellite frame relay network with multiple links, the currently available bandwidth is dynamically changing and cannot be known in advance. Therefore, in the prior art, the QoS control is performed only by using the preset bandwidth parameter, and the requirement of service quality cannot be met in a complex transmission system such as a satellite frame relay multi-link transmission network.
Disclosure of Invention
The invention is provided to solve the above problems in the prior art.
In one aspect, the present invention provides a QoS control method for a satellite frame relay network, where the satellite frame relay network includes a service master station, a plurality of offloading master stations, a plurality of offloading substations, and a plurality of service substations, the service master station has a first port and a second port, each service substation has a third port corresponding to the first port of the service master station, the service master station communicates with the plurality of offloading master stations, the offloading master station can communicate with the offloading substations via at least two types of links, the at least two types of links include satellite frame relay network links, and the plurality of offloading substations communicate with the plurality of service substations in a one-to-one correspondence. The QoS control method comprises the following steps:
when data are transmitted from the service master station and the distribution master station towards the distribution small stations and the service small stations, downlink bandwidth QoS control is executed at a first port of the service master station, and the downlink bandwidth QoS control is used for limiting the flow of the data transmitted through the first port to be not more than a first preset bandwidth set according to the link type; executing priority QoS control at a second port of the service master station, wherein the priority QoS control is used for controlling the service master station not to transmit service data with the priority lower than a preset value when the flow of data transmitted through the second port exceeds a second preset bandwidth set according to the link type; and at the offloading master station, performing a first lower traffic data QoS control for identifying a type of data transmitted by the offloading master station when a traffic of the data transmitted by the offloading master station exceeds a bandwidth of a transmission link, and controlling the offloading master station to transmit only traffic data and data for link detection among the data transmitted by the offloading master station;
when data are transmitted from the small service stations and the small distribution stations towards the main distribution station and the main service station, at a third port of the small service station, performing uplink bandwidth QoS control, which is used for limiting the flow of the data transmitted through the third port to be not more than the bandwidth of the third port; and performing, at the small offload station, uplink traffic data QoS control for identifying a type of data transmitted by the small offload station when a traffic of the data transmitted by the small offload station exceeds a bandwidth of a transmission link, and controlling the small offload station to transmit only traffic data and data for link sounding among the data transmitted by the small offload station.
Alternatively, when the link for transmitting data is a satellite frame relay network link, the first predetermined bandwidth is set as a downlink carrier bandwidth of the satellite frame relay network, and the step of performing the priority QoS control includes: when the flow of the data transmitted through the second port exceeds the bandwidth of the downlink carrier or the bandwidth of the second port, controlling the service master station not to transmit the service data of which the priority is lower than a preset value; when the link for transmitting data is not a satellite frame relay network link, the first predetermined bandwidth is set as a bandwidth of the first port, and the second predetermined bandwidth is set as a bandwidth of the second port.
Optionally, when the link for transmitting data comprises a satellite frame relay network link, one of the plurality of offloading stations is used as a scheduling offloading station that allocates data received from the service station and has a fourth port for transmitting data over the satellite frame relay network link. The QoS control method further comprises the following steps: when data are transmitted from the service master station and the offloading master station toward the offloading cell and the service cell, at a fourth port of the scheduling offloading master station, second downlink service data QoS control is performed for identifying a type of data when a flow rate of data allocated to be transmitted through a satellite frame relay network link exceeds a downlink carrier bandwidth of a satellite frame relay network, and controlling the scheduling offloading master station to transmit only service data among the data allocated to be transmitted through the satellite frame relay network link and data for link detection.
Optionally, the QoS control method further includes: and detecting the bandwidth of the first port, the bandwidth of the second port, the bandwidth of the third port, the bandwidth of the transmission link of the shunting main station and the bandwidth of the transmission link of the shunting small station.
Optionally, the step of detecting the bandwidth of the first port includes: obtaining a bandwidth of the first port by detecting a receiving clock of the first port provided by the offload master station, and performing the downstream bandwidth QoS control using a current bandwidth of the first port when it is detected that the receiving clock of the first port is stable and a change in the bandwidth of the first port exceeds a threshold.
Optionally, the step of detecting the bandwidth of the third port includes: obtaining a bandwidth of the third port by detecting a transmission clock of the third port provided by the offload small station, and performing the upstream bandwidth QoS control using a current bandwidth of the third port when it is detected that the transmission clock of the third port is stable and a change in the bandwidth of the third port exceeds a threshold.
Optionally, the QoS control method further includes: when the link for transmitting data is a satellite frame relay network link, a downlink carrier bandwidth of the satellite frame relay network is detected at the second port and a downlink carrier bandwidth of the satellite frame relay network is detected at the fourth port.
Optionally, the downlink carrier bandwidth is directly obtained at the fourth port, and when the downlink carrier bandwidth obtained at the fourth port is stable, the QoS control of the second downlink service data is performed by using the currently obtained downlink carrier bandwidth. The step of detecting the downlink carrier bandwidth of the satellite frame relay network at the second port comprises: and informing the second port of the downlink carrier bandwidth of the satellite frame relay network by the service master station, and executing the priority QoS control by using the currently informed downlink carrier bandwidth when the downlink carrier bandwidth informed by the service master station is stable and changes over a threshold value.
Optionally, the step of detecting the bandwidth of the second port includes: acquiring the bandwidth of the second port by detecting a transmission clock of the second port provided by the scheduling offload master station, and performing the priority QoS control using the current bandwidth of the second port when it is detected that the transmission clock of the second port is stable and the change in the bandwidth of the second port exceeds a threshold.
Optionally, the step of detecting the bandwidth of the transmission link of the offloading master station and the bandwidth of the transmission link of the offloading slave station includes: directly obtaining the bandwidth of a sending link of the shunting master station at a data sending part of the shunting master station, and executing the first downlink service data QoS control by using the current bandwidth of the sending link of the shunting master station when the stability of the bandwidth of the sending link of the shunting master station is detected; and directly obtaining the bandwidth of the transmission link of the small shunting station at the data transmission part of the small shunting station, and when the bandwidth of the transmission link of the small shunting station is detected to be stable, utilizing the current bandwidth of the transmission link of the small shunting station to execute the uplink service data QoS control.
Drawings
The above and other features and advantages of example embodiments of the present inventive concept will become more apparent by describing in detail example embodiments thereof with reference to the attached drawings. The drawings are intended to depict example embodiments of the inventive concept and should not be construed as limiting the scope of the claims. In the drawings:
fig. 1 shows an example of a satellite frame relay network to which the QoS control method according to the present invention can be applied;
FIG. 2 shows a basic structure for transmitting data using a satellite frame relay network link;
fig. 3a shows an example of the flow of the QoS control method according to the present invention in data downlink transmission;
fig. 3b shows an example of the flow of the QoS control method according to the present invention in data uplink transmission;
fig. 4a to 4e show examples of processing for detecting various bandwidths.
Detailed Description
Exemplary embodiments of the inventive concepts will be described in detail below with reference to the accompanying drawings.
The inventive concepts may, however, be embodied in many different forms and should not be construed as limited to the exemplary embodiments set forth herein. Furthermore, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the inventive concept to those skilled in the art.
It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of example embodiments of the present inventive concepts. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
It will be understood that the terms "comprises," "comprising," "includes," and/or "including," when used in the exemplary embodiments, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
The invention provides a QoS control method of a satellite frame relay network, in the method, according to the structural characteristics of the satellite frame relay network, QoS control is carried out on equipment, nodes and ports at different levels, and optionally QoS configuration can be adjusted according to the change of bandwidth, so that the QoS control is more effective and accurate.
Fig. 1 shows an example of a satellite frame relay network structure to which the QoS control method can be applied. Referring to fig. 1, the satellite frame relay network includes a service master station 10, a plurality of offload master stations 21-23, a plurality of offload substations 31-35, and a plurality of service substations 41-45. The service master station 10 communicates with the shunting master stations 21-23, and service data are transmitted between the service master stations; the distribution substations 31 to 35 communicate with the service substations 41 to 45 in a one-to-one correspondence, with service data being transmitted therebetween. The splitting master stations 21-23 and the splitting substations 31-35 are able to communicate via at least two types of links. In the example of fig. 1, the at least two types of links include a satellite frame relay network link such as TDM-SCPC (time division multiplexing-single carrier), a terrestrial dedicated line link, and an internet link, but the inventive concept is not limited thereto as long as the transmission link includes a satellite frame relay network link and at least one other type of link.
When transmitting data from the master station to the small stations (i.e., data downlink transmission), the traffic master station 10 transmits the traffic data to the offload master station. The shunting master station determines a current link for data transmission according to the availability of various types of current network links, processes the service data to form a corresponding link data packet, and transmits the link data packet to the shunting substations 31-35 through the corresponding links. The small shunting stations 31 to 35 process the received link data packets to obtain the service data contained therein, and transmit the obtained service data to the corresponding small service stations 41 to 45.
When transmitting data from a small station to the master station (i.e., data uplink transmission), the traffic small station 41-45 transmits the traffic data to the corresponding tributary small station 31-35. The distribution substations 31 to 35 determine the current link for data transmission according to the availability of various types of network links, process the service data to form corresponding link data packets, and transmit the link data packets to the distribution master station through the corresponding link. The offloading master station processes the received link data packet to obtain service data contained therein, and transmits the obtained service data to the service master station 10.
For a satellite frame relay network link, a common downlink carrier is used for data downlink transmission. Whether data is to be transmitted to several small stations, it is transmitted through the one downlink carrier. Data transmission between the master station side and the slave station side in the satellite frame relay network is further described below with reference to fig. 1 and 2.
Fig. 2 shows a basic structure for transmitting data using a satellite frame relay network link. Referring to fig. 2, in the downlink data transmission, the scheduling offloading master station 20 receives data from the traffic master station 10, and transmits the data transmitted via a plurality of virtual circuits PVC to the small station side via one downlink large carrier. The data received by the plurality of small splitting stations 31-35 are all from the large downlink carrier. Here, the scheduling offload master station 20 is one of the plurality of offload master stations 21 to 23 shown in fig. 1, and for example, the offload master station 21 in fig. 1 is set as the scheduling offload master station 20 in fig. 2. The scheduling offload master station 20 allocates data received from the traffic master station 10. When the satellite frame relay network link is available, the scheduling offloading master station 20 transmits the data allocated to the satellite frame relay network link to the offloading small stations 31-35 via the large downlink carrier. If there are other types of available links, scheduling offload master station 20 transmits data assigned to such available links to the corresponding offload master station, so that the offload master station transmits data via the corresponding available links. For example, in the example of fig. 1, when an internet link is available, the offloading master station 21, which is set as a scheduling offloading master station, transmits data allocated to the internet link to the offloading master station 23, and the offloading master station 23 transmits the data to the offloading slave stations 31-35 through the internet link.
During data uplink transmission, each of the shunting substations 31-35 sends data to the shunting master station via the respective backhaul small carrier. Here, the offloading master station that receives data by backhauling the small carriers is not limited to the scheduling offloading master station. For example, in the example of fig. 1, the offload master stations 21 and 22 may each receive data from the offload small stations 31-35 via a backhaul subcarrier of a satellite frame relay network (as indicated by the arrow "satellite backhaul").
Fig. 1 shows a case where there are three shunt master stations, five shunt small stations and five service small stations, respectively, but the present invention is not limited to this, as long as there are a plurality of shunt master stations, a plurality of shunt small stations and a plurality of service small stations, and the shunt small stations and the service small stations are in one-to-one correspondence.
As can be seen from the above, in the satellite frame relay network, the paths of the data uplink transmission and the data downlink transmission are different, and the bandwidths at different nodes of the transmission paths may be different. In addition, in a case where there are a plurality of types of links in the network and a currently available link is selected at each data transmission, the types and bandwidths of the available links may vary. Therefore, an appropriate QoS control method is needed, which can accurately and effectively control the flow rate of data transmission in a satellite frame relay network (especially a satellite frame relay network with multiple types of links) and ensure the transmission quality of service data.
Fig. 3a and 3b show examples of QoS control methods according to the present invention. In the QoS control method according to the present inventive concept, QoS detection and control are set at a plurality of nodes and ports according to characteristics of a network and the ports, thereby guaranteeing transmission quality of service data. The following example description may be understood in conjunction with the satellite frame relay network structures shown in fig. 1 and 2.
Fig. 3a shows the flow of the QoS control method during data downlink transmission. First, at the first port of the service master station 10, downlink bandwidth QoS control is performed (step S101). In the downstream bandwidth QoS control, a flow rate of data transmitted through the first port is limited not to exceed a first predetermined bandwidth set according to a link type. In one example, the first port of the traffic master 10 may be the trunk rx port of the master 10, which is a non-physical port that is a standard network egress. A master station 10 may have one or more first ports. In one example, the plurality of first ports may correspond to different traffic types. The data transmitted through the first port may include traffic data.
Here, when data is transmitted through the satellite frame relay network link, the first predetermined bandwidth is set as a downlink carrier bandwidth of the satellite frame relay network; when data is transmitted through the other type of link, the first predetermined bandwidth is set as a bandwidth of the first port. In other words, when data is transmitted over a satellite frame relay network link, the downlink bandwidth QoS control includes: the flow of data transmitted through the first port is limited to not exceed the downstream carrier bandwidth. When data is transmitted through other types of links, the downlink bandwidth QoS control includes: the traffic of data transmitted through the first port is limited to not exceed the bandwidth of the first port.
Then, priority QoS control is performed at the second port of the traffic master 10 (step S102). And in the priority QoS control, when the flow of the data transmitted through the second port exceeds a second preset bandwidth set according to the link type, controlling the service master station not to transmit the service data with the priority lower than a preset value. In one example, the second port of the traffic master 10 may be the downout port of the master 10, which may be considered the overall egress of the traffic master 10 and may correspond to a plurality of first ports such as trunk rx. For example, in the service master station 10, data containing service data is transmitted to the second port after passing through the plurality of first ports.
Here, when data is transmitted through the satellite frame relay network link, the second predetermined bandwidth is set to both a downlink carrier bandwidth of the satellite frame relay network and a bandwidth of the second port. Accordingly, priority QoS control includes: when the flow rate of the data transmitted through the second port exceeds the bandwidth of the downlink carrier and when the flow rate of the data transmitted through the second port exceeds the bandwidth of the second port, the service master station 10 is controlled so as not to transmit the service data of which the priority is lower than the preset value through the second port. In one example, the downlink carrier bandwidth of the satellite frame relay network may be provided by the offload master station to the service master station based on the currently available link state.
When data is transmitted through the other type of link, the second predetermined bandwidth is set only to the bandwidth of the second port. In other words, when data is transmitted over other types of links, priority QoS control includes: when the flow rate of the data transmitted through the second port exceeds the bandwidth of the second port, the service master station 10 is controlled to not transmit the service data with the priority lower than the preset value through the second port.
It should be noted that the preset value as the priority comparison standard can be set as required. In addition, when the service data includes a plurality of service data related to different services, different preset values may be set for the different services, and priority QoS control may be performed on the corresponding types of service data using the different preset values.
In the priority QoS control, the priority of the service data is identified, and the service data with a low priority is actively discarded when the traffic of the service data exceeds a predetermined traffic, thereby ensuring that important service data does not lose packets due to congestion at a data outlet. Since the second predetermined bandwidth is set according to the link type, it can be effectively ensured that important service data is not lost no matter the network structure and the link which transmit data through the shared downlink carrier, such as a satellite frame relay network, or other types of network structures and links.
Next, at the offloading master, first downstream traffic data QoS control is performed (step S103). The data sent by the offloading master station may include traffic data, data for link probing, and other types of data. In the first lower business data QoS control, when the flow of the data transmitted by the shunting main station exceeds the bandwidth of a transmission link, the type of the data transmitted by the shunting main station is identified, and the shunting main station is controlled to transmit only the business data and the data for link detection.
As described above with reference to fig. 1 and 2, for a satellite frame relay network link, one of the offload masters is a scheduling offload master. The scheduling and shunting main station is provided with a fourth port and is used for transmitting data through a satellite frame relay network link. In one example, the fourth port may be a sathubdownaut port.
In this case, step S103 may further include: and executing second downlink service data QoS control at the fourth port of the scheduling and shunting main station. In the second downlink traffic data QoS control, when the flow rate allocated as data transmitted through the satellite frame relay network link exceeds the downlink carrier bandwidth of the satellite frame relay network, the data type is identified, and the scheduling offloading master station is controlled to transmit only the traffic data therein and the data for link detection.
In other words, when data is transmitted through the satellite frame relay network link, only traffic data and link sounding data are transmitted in the case where the traffic of the data to be transmitted exceeds the downlink carrier bandwidth. When data is transmitted through other types of links, only traffic data and link probe data are transmitted in the case that the traffic of the data to be transmitted exceeds the bandwidth of the port of the offload master station. Therefore, the QoS control of the downlink service data is executed according to the characteristics of different types of links, so that the service data and the link detection data are better ensured not to lose packets.
Fig. 3b shows the flow of the QoS control method during data uplink transmission. First, at the third port of each of the traffic cells 41-45, uplink bandwidth QoS control is performed (step S201). And in the uplink bandwidth QoS control, limiting the flow of the data transmitted through the third port to be not more than the bandwidth of the third port. In one example, the third port of the traffic slave 41-45 may be a trunk port, which is a non-physical port that is a standard network egress and corresponds to the first port of the traffic master. Due to the difference between the downlink path and the uplink path of the satellite frame relay network, the uplink bandwidth QoS control is performed only for the bandwidth of the third port, compared to the downlink bandwidth QoS control in step S101.
Then, at each of the diverting substations 31 to 35, uplink traffic data QoS control is performed (step S202). In the uplink traffic data QoS control, when the flow of data transmitted by a small shunting station exceeds the bandwidth of a transmission link, the type of the data is identified, and the small shunting station is controlled to transmit only the traffic data and the data for link detection.
In the data uplink transmission of the satellite frame relay network, data is transmitted through each return small carrier, so that data current limitation based on respective link bandwidth and port bandwidth is performed for each shunt small station and each service small station, and current limitation is not performed for carrier bandwidth.
In the above example, at different nodes, different QoS control is performed based on link bandwidth, carrier bandwidth, and/or port bandwidth according to the uplink/downlink data transmission direction and the type of the current transmission link. Since there are many types of links in the network, the currently available link is selected each time data is transmitted, and thus, the types and bandwidths of the available links may vary.
For this, in the QoS control method according to the present inventive concept, detection of various types of bandwidths and QoS control based on the detection result may be further included. Bandwidth detection and corresponding QoS control will be described below with reference to fig. 4a to 4 e.
Fig. 4a to 4e show a process of detecting a bandwidth.
For the traffic master 10, the receive clock of its first port is provided by the offload master. Referring to fig. 4a, the detection of the bandwidth of the first port includes the following steps. In step S301, a bandwidth of a first port is obtained by detecting a receive clock of the first port. In step S302, it is determined whether the reception clock of the first port is stable and whether the change in the bandwidth of the first port exceeds a threshold. When it is detected that the receiving clock of the first port is stable and the variation of the bandwidth of the first port exceeds the threshold, the QoS parameter of the bandwidth of the first port is reconfigured at step S303. That is, downstream bandwidth QoS control is performed at the first port using the current bandwidth of the first port.
For each traffic cell 41-45, the transmit clock of its third port is provided by the respective splitter cell 31-35. Referring to fig. 4b, the detection of the bandwidth of the third port includes the following steps. In step S401, a bandwidth of a third port is obtained by detecting a transmission clock of the third port. In step S402, it is determined whether the transmission clock of the third port is stable and whether the bandwidth change of the third port exceeds a threshold. When it is detected that the transmission clock of the third port is stable and the change of the bandwidth of the third port exceeds the threshold, the QoS parameter of the bandwidth of the third port is reconfigured at step S403. That is, upstream bandwidth QoS control is performed at the third port using the current bandwidth of the third port.
For the shunting main station and the shunting small stations, the bandwidth of the current link for transmission can be directly obtained to be used as the bandwidth of the self-sending link. Referring to fig. 4c, the detection of the bandwidth of the transmission link of the forking master station and the bandwidth of the transmission link of the forking small station comprises the following steps. In step S501, the bandwidth of the transmission link of the offloading master station is directly obtained at the data transmission site of the offloading master station, and the bandwidth of the transmission link of the offloading small station is directly obtained at the data transmission site of the offloading small station. In step S502, it is determined whether or not the bandwidth of the transmission link of the shunting master station and the bandwidth of the transmission link of the shunting slave station are stable. And when the bandwidth of the transmission link of the shunting master station is stable, the current bandwidth of the transmission link of the shunting master station is utilized to execute the QoS control of the first business data. And when the bandwidth of the transmission link of the small shunting station is stable, the current bandwidth of the transmission link of the small shunting station is utilized to execute the QoS control of the uplink service data.
For the traffic master 10, the transmit clock of its second port is provided by the dispatch offload master via its fourth port. Referring to fig. 4d, the detection of the bandwidth of the second port includes the following steps. In step S601, the bandwidth of the second port is obtained by detecting the transmission clock of the second port. In step S602, it is determined whether the transmission clock of the second port is stable and whether the bandwidth change of the second port exceeds a threshold. When it is detected that the transmission clock of the second port is stable and the variation of the bandwidth of the second port exceeds the threshold, the QoS parameter of the bandwidth of the second port is reconfigured at step S603. That is, priority QoS control is performed at the second port using the current bandwidth of the second port.
When the link for data transmission is a satellite frame relay network link, the service master station 10 obtains the transmission bandwidth of the first port and informs the service master station having the second port of the downlink carrier bandwidth of the satellite frame relay network. In this case, the downlink carrier bandwidth of the satellite frame relay network is detected at the second port. And when the bandwidth of the downlink carrier informed by the service master station is stable and the change of the bandwidth of the downlink carrier compared with the bandwidth of the downlink carrier used for executing the QoS control is larger than a threshold value, the currently informed bandwidth of the downlink carrier is utilized to execute the priority QoS control.
In addition, when the link for data transmission is a satellite frame relay network link, it is also necessary to detect the downlink carrier bandwidth of the satellite frame relay network at the fourth port of the scheduling offloading master station. The scheduling and shunting master station can directly obtain the bandwidth of the downlink carrier wave. Therefore, referring to fig. 4e, detecting the downlink carrier bandwidth at the fourth port of the scheduling offloading master station includes the following steps. In step S701, the downlink carrier bandwidth is directly obtained at the fourth port of the scheduling offloading master station. In step S702, the obtained downlink carrier bandwidth is determined. And when the obtained downlink carrier bandwidth is stable, performing QoS control on second downlink service data at the fourth port by using the currently obtained downlink carrier bandwidth.
In the above, the "change in bandwidth" refers to a change in currently detected bandwidth with respect to a corresponding bandwidth being used for QoS control.
In the above detection, it is determined whether or not the variation of each bandwidth exceeds a threshold. In one example, the thresholds may be set differently when the direction of change is different. For example, when the detected bandwidth is higher than the QoS configuration bandwidth being used (the amount of change in the bandwidth is positive), the corresponding threshold is a first threshold; when the detected bandwidth is lower than the QoS configuration bandwidth being used (the amount of change in bandwidth is negative), the corresponding threshold is a second threshold, which is smaller than the first threshold. Through the setting, compared with the increase of the current bandwidth, the reduction of the current bandwidth is more sensitive, and the data congestion of the current link can be better avoided.
In the QoS control method according to the present invention, the values of various bandwidths in the QoS configuration are adjusted accordingly through the detection of the various bandwidths, so that the bandwidth adaptive QoS control can be realized in the satellite frame relay network with various links, and the data transmission quality can be ensured more flexibly and accurately.
Various advantages and effects of the respective exemplary embodiments are not limited to the above description, and can be easily understood by explanation of specific embodiments in the present disclosure.
While various exemplary embodiments have been shown and described above, it will be apparent to those skilled in the art that many modifications and changes may be made without departing from the scope of the inventive concept as defined in the claims.
Claims (9)
1. A QoS (quality of service) control method of a satellite frame relay network, the satellite frame relay network comprising a service master station, a plurality of offload master stations, a plurality of offload small stations, and a plurality of service small stations, the service master station having a first port and a second port, the second port being a total exit of the service master station and corresponding to the plurality of first ports, data containing service data in the service master station being transmitted to the second port after passing through the plurality of first ports, each service small station having a third port corresponding to the first port of the service master station, the service master station being in communication with the plurality of offload master stations, the offload master station being capable of communicating with the offload small stations via at least two types of links, the at least two types of links comprising satellite frame relay network links, and the plurality of offload small stations being in communication with the plurality of service small stations in one-to-one correspondence,
the QoS control method comprises the following steps:
when transmitting data from the traffic master station and the traffic master station towards the traffic stops and the traffic stops,
performing, at a first port of the traffic master station, downlink bandwidth QoS control for limiting a flow of data transmitted through the first port to not exceed a first predetermined bandwidth set according to a link type;
executing priority QoS control at a second port of the service master station, wherein the priority QoS control is used for controlling the service master station not to transmit service data with the priority lower than a preset value when the flow of data transmitted through the second port exceeds a second preset bandwidth set according to the link type; and
executing, at the offloading master station, first lower traffic data QoS control for identifying a type of data transmitted by the offloading master station when a traffic of the data transmitted by the offloading master station exceeds a bandwidth of a transmission link, and controlling the offloading master station to transmit only traffic data and data for link detection among the data transmitted by the offloading master station;
when transmitting data from the traffic small station and the distribution small station towards the distribution main station and the traffic main station,
performing, at a third port of the service cell, an uplink bandwidth QoS control for limiting a flow of data transmitted through the third port to not exceed a bandwidth of the third port; and
performing, at the diverting station, uplink traffic data QoS control for identifying a type of data transmitted by the diverting station when a traffic of the data transmitted by the diverting station exceeds a bandwidth of a transmission link, and controlling the diverting station to transmit only traffic data among the data transmitted by the diverting station and data for link probing,
wherein, when the link for transmitting data is a satellite frame relay network link, the first predetermined bandwidth is set as a downlink carrier bandwidth of the satellite frame relay network, and the step of performing the priority QoS control includes: when the flow of the data transmitted through the second port exceeds the bandwidth of the downlink carrier or the bandwidth of the second port, controlling the service master station not to transmit the service data of which the priority is lower than a preset value;
when the link for transmitting data is not a satellite frame relay network link, the first predetermined bandwidth is set as a bandwidth of the first port, and the second predetermined bandwidth is set as a bandwidth of the second port.
2. The QoS control method of claim 1, wherein when the link for transmitting data comprises a satellite frame relay network link, one of the plurality of offload master stations is used as a scheduling offload master station that allocates data received from the traffic master station and has a fourth port for transmitting data over the satellite frame relay network link, and
the QoS control method further comprises the following steps:
when data are transmitted from the service master station and the offloading master station toward the offloading cell and the service cell, at a fourth port of the scheduling offloading master station, second downlink service data QoS control is performed for identifying a type of data when a flow rate of data allocated to be transmitted through a satellite frame relay network link exceeds a downlink carrier bandwidth of a satellite frame relay network, and controlling the scheduling offloading master station to transmit only service data among the data allocated to be transmitted through the satellite frame relay network link and data for link detection.
3. The QoS control method according to claim 2, further comprising:
and detecting the bandwidth of the first port, the bandwidth of the second port, the bandwidth of the third port, the bandwidth of the transmission link of the shunting main station and the bandwidth of the transmission link of the shunting small station.
4. The QoS control method according to claim 3, wherein the step of detecting the bandwidth of the first port comprises:
obtaining a bandwidth of the first port by detecting a receive clock of the first port provided by the offload master,
and when the receiving clock of the first port is detected to be stable and the change of the bandwidth of the first port exceeds a threshold value, the current bandwidth of the first port is utilized to execute the downstream bandwidth QoS control.
5. The QoS control method of claim 3, wherein the step of detecting the bandwidth of the third port comprises:
obtaining a bandwidth of the third port by detecting a transmit clock of the third port provided by the forking small station,
and when the transmission clock of the third port is detected to be stable and the change of the bandwidth of the third port exceeds a threshold value, the current bandwidth of the third port is utilized to execute the uplink bandwidth QoS control.
6. The QoS control method of claim 3, further comprising:
when the link for transmitting data is a satellite frame relay network link, a downlink carrier bandwidth of the satellite frame relay network is detected at the second port and a downlink carrier bandwidth of the satellite frame relay network is detected at the fourth port.
7. The QoS control method according to claim 6,
wherein the step of detecting the downlink carrier bandwidth of the satellite frame relay network at the fourth port comprises:
directly obtaining the downlink carrier bandwidth at the fourth port, and when the downlink carrier bandwidth obtained at the fourth port is stable, performing the second downlink service data QoS control by using the currently obtained downlink carrier bandwidth;
and wherein the step of detecting the downlink carrier bandwidth of the satellite frame relay network at the second port comprises:
and informing the second port of the downlink carrier bandwidth of the satellite frame relay network by the service master station, and executing the priority QoS control by using the currently informed downlink carrier bandwidth when the downlink carrier bandwidth informed by the service master station is stable and changes over a threshold value.
8. The QoS control method of claim 3, wherein the step of detecting the bandwidth of the second port comprises:
obtaining a bandwidth of the second port by detecting a transmit clock of the second port provided by the scheduling offload master,
when it is detected that the transmission clock of the second port is stable and the variation of the bandwidth of the second port exceeds a threshold, the priority QoS control is performed using the current bandwidth of the second port.
9. The QoS control method according to claim 3, wherein the step of detecting the bandwidth of the transmission link of the offload master station and the bandwidth of the transmission link of the offload slave station comprises:
directly obtaining the bandwidth of a sending link of the shunting master station at a data sending part of the shunting master station, and executing the first downlink service data QoS control by using the current bandwidth of the sending link of the shunting master station when the stability of the bandwidth of the sending link of the shunting master station is detected; and
directly obtaining the bandwidth of the transmission link of the small shunting station at the data transmission position of the small shunting station, and executing the uplink service data QoS control by using the current bandwidth of the transmission link of the small shunting station when the stability of the bandwidth of the transmission link of the small shunting station is detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710806710.7A CN109474539B (en) | 2017-09-08 | 2017-09-08 | QoS control method for satellite frame relay network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710806710.7A CN109474539B (en) | 2017-09-08 | 2017-09-08 | QoS control method for satellite frame relay network |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109474539A CN109474539A (en) | 2019-03-15 |
| CN109474539B true CN109474539B (en) | 2022-08-12 |
Family
ID=65657877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710806710.7A Active CN109474539B (en) | 2017-09-08 | 2017-09-08 | QoS control method for satellite frame relay network |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109474539B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101986619A (en) * | 2010-10-29 | 2011-03-16 | 南京丹奥科技有限公司 | Bandwidth reservation-based VSAT satellite communication system bandwidth distribution method |
| CN102624631A (en) * | 2012-04-06 | 2012-08-01 | 航天恒星科技有限公司 | Feedback QoS (quality of service) safeguard system and safeguard method for satellite communication system |
| CN103595764A (en) * | 2013-10-17 | 2014-02-19 | 航天恒星科技有限公司 | Multi-service QoS safeguard system of super-large scale VSAT system and implementation method thereof |
| CN104506230A (en) * | 2014-12-19 | 2015-04-08 | 南京邮电大学 | Multipath parallel and reliable transmission method applicable to satellite network |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7346677B1 (en) * | 1999-07-02 | 2008-03-18 | Cisco Technology, Inc. | Method and apparatus for creating policies for policy-based management of quality of service treatments of network data traffic flows |
| CN102883374B (en) * | 2012-10-15 | 2015-04-22 | 航天恒星科技有限公司 | Resource distribution method for satellite communication system |
-
2017
- 2017-09-08 CN CN201710806710.7A patent/CN109474539B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101986619A (en) * | 2010-10-29 | 2011-03-16 | 南京丹奥科技有限公司 | Bandwidth reservation-based VSAT satellite communication system bandwidth distribution method |
| CN102624631A (en) * | 2012-04-06 | 2012-08-01 | 航天恒星科技有限公司 | Feedback QoS (quality of service) safeguard system and safeguard method for satellite communication system |
| CN103595764A (en) * | 2013-10-17 | 2014-02-19 | 航天恒星科技有限公司 | Multi-service QoS safeguard system of super-large scale VSAT system and implementation method thereof |
| CN104506230A (en) * | 2014-12-19 | 2015-04-08 | 南京邮电大学 | Multipath parallel and reliable transmission method applicable to satellite network |
Non-Patent Citations (1)
| Title |
|---|
| "卫星帧中继网络环境下的组播传输方法";任政 等;《数字通信世界》;20170608(第6期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109474539A (en) | 2019-03-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3082309B1 (en) | Sdn controller, data centre system and router connection method | |
| CN108243120B (en) | Service flow transmission method, device and communication system based on flexible Ethernet | |
| CN108777667B (en) | Method and device for adjusting bandwidth of transmission channel in flexible Ethernet | |
| US11134029B2 (en) | Communication method, communications device, and storage medium | |
| EP1619833A1 (en) | Load balancing in a virtual private network | |
| US20150124623A1 (en) | System and Method for Traffic Splitting | |
| CN110636643A (en) | Method and device for sending and receiving data packet and transmission system of data packet | |
| US20200259739A1 (en) | Data packet forwarding in an ngso satellite network | |
| US20200259558A1 (en) | Information rate and quality-of-service configurations for end-to-end data flow in an ngso satellite network | |
| Lee | Performance bounds in communication networks with variable-rate links | |
| US10187305B2 (en) | System and method for using a path control element as a central controller for local protection of label switched path (LSP) | |
| CN108206759B (en) | Method, equipment and system for forwarding message | |
| EP3586565B1 (en) | Method and distributed antenna system for routing aggregated carriers in the distributed antenna system | |
| US9668150B2 (en) | System and method for selective protection switching | |
| CN109257282B (en) | Data transmission method and device | |
| CN115245022A (en) | Resource unit allocation in a mesh network | |
| US20120014260A1 (en) | Communication device in communication network and communication control method | |
| Schweitzer et al. | Merging SONET and Ethernet communications for power system applications | |
| US9391920B2 (en) | Iterative max-min fairness algorithms | |
| CN107241268B (en) | Local multipath routing method and device based on satellite-based ADS-B message satellite network | |
| EP2797266A1 (en) | Method and system for suppressing service packet storm during ring network protection | |
| US9722913B2 (en) | System and method for delay management for traffic engineering | |
| CN109474539B (en) | QoS control method for satellite frame relay network | |
| EP4184819A1 (en) | Route optimization method, physical network device and computer-readable storage medium | |
| JP4798083B2 (en) | Communication system, redundant node, and redundant node program |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |