CN106572030B - multipath transmission control method and system in distributed network - Google Patents
multipath transmission control method and system in distributed network Download PDFInfo
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- CN106572030B CN106572030B CN201610935710.2A CN201610935710A CN106572030B CN 106572030 B CN106572030 B CN 106572030B CN 201610935710 A CN201610935710 A CN 201610935710A CN 106572030 B CN106572030 B CN 106572030B
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- 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
- H04L47/2425—Traffic characterised by specific attributes, e.g. priority or QoS for supporting services specification, e.g. SLA
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- 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
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- 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
Abstract
the invention discloses a multipath transmission control method and a multipath transmission control system in a distributed network, which are applied to the distributed network, wherein the distributed network comprises the following steps: the system comprises a server, terminal equipment, access equipment and at least two storage devices; the terminal equipment supports the receiving and sending of service messages on two or more than two transmission sub-flows; the method comprises the following steps: and the terminal equipment sends service messages to the access equipment by using the first transmission sub-flow and the second transmission sub-flow, so that the access equipment respectively forwards the received service messages to the first storage equipment and the second storage equipment. The data storage is performed by using at least two storage devices, and the terminal device uses at least two transmission sub-streams in the process of sending data to the storage devices, so that on one hand, the uplink speed can be increased to the maximum extent, and on the other hand, when service control is performed, QoS control can be performed on one of the transmission sub-streams, and the overhead of control signaling is reduced.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and a system for controlling multipath transmission in a distributed network.
background
evolved Packet System (EPS) is a concept that appears in the third Generation Partnership Project (3rd Generation Partnership Project, 3 GPP). It can be considered that EPS is UE (User Equipment) + LTE (Long Term Evolution; 4G access network part) + EPC (Evolved Packet Core).
With The rapid development of The internet, a terminal device usually has multiple network interfaces, such as Wi-Fi (Wireless-Fidelity) interface, 2G (The 2nd Generation Mobile Communication Technology, second Generation Mobile Communication Technology) interface, 3G (The 3rd Generation Mobile Communication Technology, third Generation Mobile Communication Technology) interface, and so on, so that multiple links to a target node can be realized.
TCP (Transmission Control Protocol) is a connection-oriented, reliable transport layer communication Protocol based on byte stream, is a one-to-one transport Protocol, and cannot fully utilize the advantage of multiple access and multiple network interfaces of user equipment, thereby causing resource waste.
MPTCP (MultiPath TCP) is an improved protocol of TCP, which allows both communicating parties to simultaneously transmit data over multiple connections. In mobile communication, when a UE and a server supporting MPTCP technology simultaneously use multiple connections of 3GPP access technology to communicate with an opposite end, the UE modifies the QoS (Quality of Service) of the bearer according to the Service requirement.
however, currently the bearer QoS of each connection is modified for each connection according to the traffic demand. The signaling processing amount of the UE and the server is increased, and additional resources are consumed.
disclosure of Invention
aiming at the defects of the prior art, the invention provides a multipath transmission control method and a multipath transmission control system in a distributed network, which are used for reducing the signaling consumption.
The technical scheme of the invention is as follows: a multipath transmission control method in a distributed network is applied to the distributed network, and the distributed network comprises the following steps: the system comprises a server, terminal equipment, access equipment and at least two storage devices; the terminal equipment supports the receiving and sending of service messages on two or more than two transmission sub-flows; the method comprises the following steps:
And the terminal equipment sends service messages to the access equipment by using the first transmission sub-flow and the second transmission sub-flow, so that the access equipment respectively forwards the received service messages to the first storage equipment and the second storage equipment.
In an optional implementation manner, the server is a control plane device in the distributed network, the access device integrates a forwarding plane function, and the first transmission sub-flow and the second transmission sub-flow use different network interfaces; the method further comprises the following steps:
the server intercepts service messages which are sent to the first storage device and the second storage device respectively by the terminal device by using the first transmission sub-stream and the second transmission sub-stream;
the server analyzes the service message, and obtains the association information of the first transmission sub-stream and the second transmission sub-stream from the service message, wherein the association information comprises the stream identification information of the first transmission sub-stream and the second transmission sub-stream;
the server determines that the first transmission sub-flow and the second transmission sub-flow belong to the transmission sub-flow used by the terminal equipment according to the association information, and sends modification strategy information to the access equipment according to a service quality strategy;
and the access equipment modifies the uplink network resources occupied by the first transmission sub-flow and/or the second transmission sub-flow according to the indication of the modification strategy information.
in an optional implementation manner, the server is a control plane device in the distributed network, the access device integrates a forwarding plane function, and the first transmission sub-flow and the second transmission sub-flow use different network interfaces; the method further comprises the following steps:
After receiving the service message, the access device analyzes the service message to obtain the flow identification information carried in the service message, and if the flow identification information obtained by analysis is different from the previous flow identification information, the access device reports the flow identification information to the server;
and after receiving the stream identification information, the server analyzes the stream identification information to obtain a sub-stream sequence number and a stream identification, and if the sub-stream sequence number of the first sub-stream and the stream sequence number of the second sub-stream exist and the stream identifications are the same, the server determines that the first transmission sub-stream and the second transmission sub-stream both belong to the transmission sub-stream used by the terminal equipment.
in an optional implementation manner, the access device includes:
a first base station and a second base station;
the sending, by the terminal device, the service packet to the access device using the first transport sub-stream and the second transport sub-stream includes:
The terminal equipment uses a first transmission sub flow to send a service message to the first base station, and the terminal equipment uses a second transmission sub flow to send a service message to the second base station;
the sending a modification policy to the access device according to the quality of service policy comprises:
the server determines that the network resource occupied by the first service sub-flow needs to be modified according to the service quality strategy, and then sends the modification strategy information to the first base station; and/or the server determines that the network resource occupied by the second service sub-flow needs to be modified according to the service quality strategy, and then sends the modification strategy information to the second base station.
in an optional implementation, the method further includes:
The first storage device and the second storage device respectively send a transmission sub-stream establishment request to the server, and request to establish a transmission sub-stream for transmitting a downlink data packet with the terminal device;
the server receives downlink transmission resource requests from the first storage device and the second storage device, analyzes the downlink transmission resource requests to obtain stream identification information of the first transmission sub-stream and the second transmission sub-stream, records the stream identification information of the first transmission sub-stream and the second transmission sub-stream, and allocates downlink network resources for the first transmission sub-stream and the second transmission sub-stream respectively;
the first storage device sends a data packet to the terminal device through the first base station by using the downlink network resource corresponding to the first transmission sub-stream, and the second storage device sends a data packet to the terminal device through the second base station by using the downlink network resource corresponding to the second transmission sub-stream;
the server respectively receives downlink network resource occupation state information of a network interface reported by the first base station and/or the second base station after determining that the own downlink network resource occupation proportion is higher than a preset threshold value, and determines whether the downlink network resource of the first transmission sub-flow and/or the downlink network resource of the second transmission sub-flow need to be adjusted or not according to the downlink network resource occupation state information; if yes, sending a strategy modification instruction to the first base station and/or the second base station;
after receiving the policy modification instruction, the first base station adjusts downlink network resources corresponding to the first transmission sub-stream according to the instruction of the policy modification instruction; and/or after receiving the policy modification instruction, the second base station adjusts downlink network resources corresponding to the second transmission sub-stream according to the instruction of the policy modification instruction.
in an optional implementation manner, before the server respectively receives downlink network resource occupation state information of a network interface reported by the first base station and/or the second base station after determining that the downlink network resource occupation ratio of the first base station and/or the second base station is higher than a predetermined threshold, the method further includes:
storing a corresponding relation table in a fast translation buffer (TLB) of the server, wherein the table entry of the corresponding relation table comprises: identification information of the first transmission sub-stream and identification information of the second transmission sub-stream, allocation amounts of downlink network resources of the first transmission sub-stream and the second transmission sub-stream, network addresses of the first base station and the second base station, and downlink network resource occupation state information of the first base station and the second base station;
After receiving the downlink network resource occupation state information, the server obtains a network address of a downlink network resource occupation state information source, finds the corresponding relation by searching the network address of the downlink network resource occupation state information source and updates the received downlink network resource occupation state information to the downlink network resource occupation state information of the corresponding base station;
after the server sends the policy modification instruction, the method further comprises:
and after receiving the message that the first base station and/or the second base station successfully adjusts the downlink network resources, adjusting the downlink network resource occupation state information stored in the TLB according to the modification strategy instruction.
in another aspect, an embodiment of the present invention further provides a distributed network, including: the server, the terminal equipment, the access equipment and the at least two storage devices; the method is characterized in that the terminal equipment supports the receiving and sending of service messages on two or more than two transmission sub-flows;
the terminal device is configured to send a service packet to the access device using the first transport sub-stream and the second transport sub-stream, so that the access device forwards the received service packet to the first storage device and the second storage device, respectively.
in an optional implementation manner, the server is a control plane device in the distributed network, the access device integrates a forwarding plane function, and the first transmission sub-flow and the second transmission sub-flow use different network interfaces;
the server is configured to intercept service packets that the terminal device uses the first transmission sub-stream and the second transmission sub-stream to send to the first storage device and the second storage device, respectively;
Analyzing the service message, and obtaining the association information of the first transmission sub-stream and the second transmission sub-stream from the service message, wherein the association information comprises the stream identification information of the first transmission sub-stream and the second transmission sub-stream;
determining that the first transmission sub-flow and the second transmission sub-flow both belong to the transmission sub-flow used by the terminal equipment according to the association information, and sending modification strategy information to the access equipment according to a service quality strategy;
And the access device is configured to modify, according to the indication of the modification policy information, the uplink network resource occupied by the first transmission sub-stream and/or the second transmission sub-stream.
in an optional implementation manner, the access device includes:
A first base station and a second base station;
the terminal device, configured to send the service packet to the access device using the first transport sub-stream and the second transport sub-stream, includes:
Using a first transmission sub-flow to send a service message to the first base station, and using a second transmission sub-flow to send the service message to the second base station by the terminal equipment;
the server, configured to send a modification policy to the access device according to the qos policy, includes:
determining network resources occupied by the first service sub-flow needing to be modified according to a service quality strategy, and sending modification strategy information to the first base station; and/or, determining that the network resource occupied by the second service sub-flow needs to be modified according to the service quality strategy, and then sending the modification strategy information to the second base station.
in an optional implementation manner, the first storage device and the second storage device are further configured to send transmission sub-stream establishment requests to the server, respectively, for establishing a transmission sub-stream for transmitting a downlink data packet with the terminal device;
the server is further configured to receive downlink transmission resource requests from the first storage device and the second storage device, parse the downlink transmission resource requests to obtain stream identification information of the first transmission sub-stream and the second transmission sub-stream, record the stream identification information of the first transmission sub-stream and the second transmission sub-stream, and allocate downlink network resources to the first transmission sub-stream and the second transmission sub-stream respectively;
the first storage device is further configured to send a data packet to the terminal device through the first base station using the downlink network resource corresponding to the first transmission sub-stream, and the second storage device sends a data packet to the terminal device through the second base station using the downlink network resource corresponding to the second transmission sub-stream;
The server is further configured to receive downlink network resource occupation state information of the network interface reported by the first base station and/or the second base station after determining that the downlink network resource occupation ratio of the first base station and/or the second base station is higher than a predetermined threshold, and determine whether to adjust the downlink network resource of the first transmission sub-stream and/or the downlink network resource of the second transmission sub-stream according to the downlink network resource occupation state information; if yes, sending a strategy modification instruction to the first base station and/or the second base station;
The first base station is further configured to, after receiving the policy modification instruction, adjust downlink network resources corresponding to the first transport sub-stream according to the instruction of the policy modification instruction; and/or the second base station is further configured to adjust, after receiving the policy modification instruction, the downlink network resource corresponding to the second transmission sub-stream according to the instruction of the policy modification instruction.
in an optional implementation manner, the server is further configured to store a correspondence table in a fast translation buffer TLB of the server before the server receives downlink network resource occupation state information of the network interface, which is reported by the first base station and/or the second base station after determining that a downlink network resource occupation ratio of the first base station and/or the second base station is higher than a predetermined threshold, where an entry of the correspondence table includes: identification information of the first transmission sub-stream and identification information of the second transmission sub-stream, allocation amounts of downlink network resources of the first transmission sub-stream and the second transmission sub-stream, network addresses of the first base station and the second base station, and downlink network resource occupation state information of the first base station and the second base station;
The server is further configured to obtain a network address of a source of the downlink network resource occupation state information after receiving the downlink network resource occupation state information, find the corresponding relationship by looking up the network address of the source of the downlink network resource occupation state information, and update the received downlink network resource occupation state information to the downlink network resource occupation state information of the corresponding base station;
the server is further configured to, after the server sends a modification policy instruction and receives a message that the first base station and/or the second base station successfully adjusts the downlink network resource, adjust the downlink network resource occupation state information stored in the TLB according to the modification policy instruction.
the invention has the beneficial effects that: the data storage is performed by using at least two storage devices, and the terminal device uses at least two transmission sub-streams in the process of sending data to the storage devices, so that on one hand, the uplink speed can be increased to the maximum extent, and on the other hand, when service control is performed, QoS control can be performed on one of the transmission sub-streams, so that the control on the whole service QoS can be realized, and the overhead of control signaling is reduced.
Drawings
FIG. 1 is a schematic flow chart of a method according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of a method according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a distributed system according to an embodiment of the present invention.
Detailed Description
the following further describes embodiments of the present invention with reference to the accompanying drawings:
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
an embodiment of the present invention provides a multipath transmission control method in a distributed network, as shown in fig. 1, the method is applied to the distributed network, and the distributed network includes: the system comprises a server, terminal equipment, access equipment and at least two storage devices; the terminal equipment supports the receiving and sending of service messages on two or more than two transmission sub-flows; the method comprises the following steps:
and the terminal equipment sends service messages to the access equipment by using the first transmission sub-flow and the second transmission sub-flow, so that the access equipment respectively forwards the received service messages to the first storage equipment and the second storage equipment.
further, the server is a control plane device in the distributed network, the access device integrates a forwarding plane function, and the first transmission sub-stream and the second transmission sub-stream use different network interfaces; the method further comprises the following steps:
the server intercepts service messages which are sent to the first storage device and the second storage device respectively by the terminal device by using the first transmission sub-stream and the second transmission sub-stream;
the server analyzes the service message, and obtains the association information of the first transmission sub-stream and the second transmission sub-stream from the service message, wherein the association information comprises the stream identification information of the first transmission sub-stream and the second transmission sub-stream;
The server determines that the first transmission sub-flow and the second transmission sub-flow belong to the transmission sub-flow used by the terminal equipment according to the association information, and sends modification strategy information to the access equipment according to a service quality strategy;
and the access equipment modifies the uplink network resources occupied by the first transmission sub-flow and/or the second transmission sub-flow according to the indication of the modification strategy information.
in this embodiment, it is determined that there is an association between two transport sub-streams through the stream identification information in the service packet, and a specific implementation scheme may be that the two transport sub-streams use the same stream identification. In addition, in order to enable the forwarding plane device to distinguish between two sub-streams, sequence number information of the sub-streams may be added before the stream identifier, for example: sub-stream sequence number + stream id; the server may intercept the stream identifier for comparison when identifying the transport sub-stream. By using the scheme, the table entries of a subsequent fast Translation Buffer (TLB) can be compared conveniently.
In this embodiment, the server determines the association relationship between the transmission sub-streams, and after determining the association relationship, if the resource condition occupied by the terminal device needs to be adjusted, it is only necessary to modify the resource occupied by one of the transmission sub-streams, and it is not necessary to adjust each transmission sub-stream individually, so that the overhead of the control plane signaling can be greatly reduced.
further, as shown in fig. 2, the access device includes:
a first base station and a second base station;
the sending, by the terminal device, the service packet to the access device using the first transport sub-stream and the second transport sub-stream includes:
The terminal equipment uses a first transmission sub flow to send a service message to the first base station, and the terminal equipment uses a second transmission sub flow to send a service message to the second base station;
The sending a modification policy to the access device according to the quality of service policy comprises:
The server determines that the network resource occupied by the first service sub-flow needs to be modified according to the service quality strategy, and then sends the modification strategy information to the first base station; and/or the server determines that the network resource occupied by the second service sub-flow needs to be modified according to the service quality strategy, and then sends the modification strategy information to the second base station.
in this embodiment, the base station serves as an access device, and also has a forwarding plane device, and a service packet forwarded by the base station may pass through the control plane device or may be within a monitoring range of the control plane device.
in this embodiment, the implementation scheme for the server to determine the association between the transmission sub-streams may specifically be as follows:
after receiving the service message, the first base station and the second base station analyze the service message to obtain the flow identification information carried in the service message, and if the flow identification information obtained by analysis is different from the previous flow identification information, report the flow identification information to the server;
And after receiving the stream identification information, the server analyzes the stream identification information to obtain a sub-stream sequence number and a stream identification, and if the sub-stream sequence number of the first sub-stream and the stream sequence number of the second sub-stream exist and the stream identifications are the same, the server determines that the first transmission sub-stream and the second transmission sub-stream both belong to the transmission sub-stream used by the terminal equipment.
Furthermore, an implementation scheme for sending service data to the same terminal device by using the storage device is further provided in the embodiments of the present invention, it should be noted that, in the implementation scheme, a downlink data packet only needs to be sent to the same terminal device, and a data packet that necessarily belongs to the same service is not needed, which is specifically as follows: the method further comprises the following steps:
The first storage device and the second storage device respectively send a transmission sub-stream establishment request to the server, and request to establish a transmission sub-stream for transmitting a downlink data packet with the terminal device;
the server receives downlink transmission resource requests from the first storage device and the second storage device, analyzes the downlink transmission resource requests to obtain stream identification information of the first transmission sub-stream and the second transmission sub-stream, records the stream identification information of the first transmission sub-stream and the second transmission sub-stream, and allocates downlink network resources for the first transmission sub-stream and the second transmission sub-stream respectively;
The first storage device sends a data packet to the terminal device through the first base station by using the downlink network resource corresponding to the first transmission sub-stream, and the second storage device sends a data packet to the terminal device through the second base station by using the downlink network resource corresponding to the second transmission sub-stream;
the server respectively receives downlink network resource occupation state information of a network interface reported by the first base station and/or the second base station after determining that the own downlink network resource occupation proportion is higher than a preset threshold value, and determines whether the downlink network resource of the first transmission sub-flow and/or the downlink network resource of the second transmission sub-flow need to be adjusted or not according to the downlink network resource occupation state information; if yes, sending a strategy modification instruction to the first base station and/or the second base station;
after receiving the policy modification instruction, the first base station adjusts downlink network resources corresponding to the first transmission sub-stream according to the instruction of the policy modification instruction; and/or after receiving the policy modification instruction, the second base station adjusts downlink network resources corresponding to the second transmission sub-stream according to the instruction of the policy modification instruction.
in this embodiment, the server controls the establishment of the sub-streams, multiple transmission sub-streams are established when the terminal device supports multiple transmission paths, the access device determines the occupation of its own downlink network resources and reports the occupation to the server of the control plane, the server adjusts the downlink network resources of one of the transmission sub-streams of a specific terminal device, and it is not necessary to modify the policy of each transmission sub-stream of the terminal device, so that the control signaling resources can be saved, and the resource occupation of different access devices can be flexibly adapted on the premise of meeting the service requirements of the terminal device.
the embodiment of the present invention further provides an implementation scheme for establishing a TLB to accelerate resource management, which includes the following specific steps: before the server respectively receives downlink network resource occupation state information of the network interface reported by the first base station and/or the second base station after determining that the downlink network resource occupation ratio of the first base station and/or the second base station is higher than the predetermined threshold, the method further includes:
storing a corresponding relation table in a fast translation buffer (TLB) of the server, wherein the table entry of the corresponding relation table comprises: identification information of the first transmission sub-stream and identification information of the second transmission sub-stream, allocation amounts of downlink network resources of the first transmission sub-stream and the second transmission sub-stream, network addresses of the first base station and the second base station, and downlink network resource occupation state information of the first base station and the second base station;
After receiving the downlink network resource occupation state information, the server obtains a network address of a downlink network resource occupation state information source, finds the corresponding relation by searching the network address of the downlink network resource occupation state information source and updates the received downlink network resource occupation state information to the downlink network resource occupation state information of the corresponding base station;
After the server sends the policy modification instruction, the method further comprises:
and after receiving the message that the first base station and/or the second base station successfully adjusts the downlink network resources, adjusting the downlink network resource occupation state information stored in the TLB according to the modification strategy instruction.
an embodiment of the present invention further provides a distributed network, as shown in fig. 3, which may be referred to as fig. 1 and fig. 2, and includes: the system comprises a server, terminal equipment, access equipment and at least two storage devices; the method is characterized in that the terminal equipment supports the receiving and sending of service messages on two or more than two transmission sub-flows; it is characterized in that the preparation method is characterized in that,
The terminal device is configured to send a service packet to the access device using the first transport sub-stream and the second transport sub-stream, so that the access device forwards the received service packet to the first storage device and the second storage device, respectively.
further, the server is a control plane device in the distributed network, the access device integrates a forwarding plane function, and the first transmission sub-stream and the second transmission sub-stream use different network interfaces;
the server is configured to intercept service packets that the terminal device uses the first transmission sub-stream and the second transmission sub-stream to send to the first storage device and the second storage device, respectively;
Analyzing the service message, and obtaining the association information of the first transmission sub-stream and the second transmission sub-stream from the service message, wherein the association information comprises the stream identification information of the first transmission sub-stream and the second transmission sub-stream;
determining that the first transmission sub-flow and the second transmission sub-flow both belong to the transmission sub-flow used by the terminal equipment according to the association information, and sending modification strategy information to the access equipment according to a service quality strategy;
and the access device is configured to modify, according to the indication of the modification policy information, the uplink network resource occupied by the first transmission sub-stream and/or the second transmission sub-stream.
Optionally, the access device includes:
A first base station and a second base station;
the terminal device, configured to send the service packet to the access device using the first transport sub-stream and the second transport sub-stream, includes:
Using a first transmission sub-flow to send a service message to the first base station, and using a second transmission sub-flow to send the service message to the second base station by the terminal equipment;
the server, configured to send a modification policy to the access device according to the qos policy, includes:
determining network resources occupied by the first service sub-flow needing to be modified according to a service quality strategy, and sending modification strategy information to the first base station; and/or, determining that the network resource occupied by the second service sub-flow needs to be modified according to the service quality strategy, and then sending the modification strategy information to the second base station.
further, the first storage device and the second storage device are further configured to send transmission sub-stream establishment requests to the server, respectively, to establish a transmission sub-stream for transmitting a downlink data packet with the terminal device;
the server is further configured to receive downlink transmission resource requests from the first storage device and the second storage device, parse the downlink transmission resource requests to obtain stream identification information of the first transmission sub-stream and the second transmission sub-stream, record the stream identification information of the first transmission sub-stream and the second transmission sub-stream, and allocate downlink network resources to the first transmission sub-stream and the second transmission sub-stream respectively;
The first storage device is further configured to send a data packet to the terminal device through the first base station using the downlink network resource corresponding to the first transmission sub-stream, and the second storage device sends a data packet to the terminal device through the second base station using the downlink network resource corresponding to the second transmission sub-stream;
the server is further configured to receive downlink network resource occupation state information of the network interface reported by the first base station and/or the second base station after determining that the downlink network resource occupation ratio of the first base station and/or the second base station is higher than a predetermined threshold, and determine whether to adjust the downlink network resource of the first transmission sub-stream and/or the downlink network resource of the second transmission sub-stream according to the downlink network resource occupation state information; if yes, sending a strategy modification instruction to the first base station and/or the second base station;
The first base station is further configured to, after receiving the policy modification instruction, adjust downlink network resources corresponding to the first transport sub-stream according to the instruction of the policy modification instruction; and/or the second base station is further configured to adjust, after receiving the policy modification instruction, the downlink network resource corresponding to the second transmission sub-stream according to the instruction of the policy modification instruction.
Further, the server is further configured to store a correspondence table in a fast translation buffer TLB of the server before the server receives downlink network resource occupation state information of the network interface, which is reported by the first base station and/or the second base station after determining that the downlink network resource occupation ratio of the first base station and/or the second base station is higher than a predetermined threshold, where an entry of the correspondence table includes: identification information of the first transmission sub-stream and identification information of the second transmission sub-stream, allocation amounts of downlink network resources of the first transmission sub-stream and the second transmission sub-stream, network addresses of the first base station and the second base station, and downlink network resource occupation state information of the first base station and the second base station;
the server is further configured to obtain a network address of a source of the downlink network resource occupation state information after receiving the downlink network resource occupation state information, find the corresponding relationship by looking up the network address of the source of the downlink network resource occupation state information, and update the received downlink network resource occupation state information to the downlink network resource occupation state information of the corresponding base station;
the server is further configured to, after the server sends a modification policy instruction and receives a message that the first base station and/or the second base station successfully adjusts the downlink network resource, adjust the downlink network resource occupation state information stored in the TLB according to the modification policy instruction.
it will be understood by those skilled in the art that all or part of the steps in the above method embodiments may be implemented by a program to instruct relevant hardware to perform the steps, and the corresponding program may be stored in a computer-readable storage medium, where the above storage medium may be a read-only memory, a magnetic disk or an optical disk.
The foregoing embodiments and description have been presented only to illustrate the principles and preferred embodiments of the invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention as hereinafter claimed.
Claims (7)
1. A multipath transmission control method in a distributed network is applied to the distributed network, and the distributed network comprises the following steps: the system comprises a server, terminal equipment, access equipment and at least two storage devices; the terminal equipment supports the receiving and sending of service messages on two or more than two transmission sub-flows; the access device includes: a first base station and a second base station;
characterized in that the method comprises:
the terminal equipment sends a service message to the access equipment by using a first transmission sub-flow and a second transmission sub-flow, so that the access equipment respectively forwards the received service message to a first storage equipment and a second storage equipment;
The first storage device and the second storage device respectively send a transmission sub-stream establishment request to the server, and request to establish a transmission sub-stream for transmitting a downlink data packet with the terminal device;
the server receives downlink transmission resource requests from the first storage device and the second storage device, analyzes the downlink transmission resource requests to obtain stream identification information of the first transmission sub-stream and the second transmission sub-stream, records the stream identification information of the first transmission sub-stream and the second transmission sub-stream, and allocates downlink network resources for the first transmission sub-stream and the second transmission sub-stream respectively;
The first storage device sends a data packet to the terminal device through the first base station by using the downlink network resource corresponding to the first transmission sub-stream, and the second storage device sends a data packet to the terminal device through the second base station by using the downlink network resource corresponding to the second transmission sub-stream;
the server respectively receives downlink network resource occupation state information of a network interface reported by the first base station and/or the second base station after determining that the own downlink network resource occupation proportion is higher than a preset threshold value, and determines whether the downlink network resource of the first transmission sub-flow and/or the downlink network resource of the second transmission sub-flow need to be adjusted or not according to the downlink network resource occupation state information; if yes, sending a strategy modification instruction to the first base station and/or the second base station;
after receiving the policy modification instruction, the first base station adjusts downlink network resources corresponding to the first transmission sub-stream according to the instruction of the policy modification instruction; and/or after receiving the policy modification instruction, the second base station adjusts downlink network resources corresponding to the second transmission sub-stream according to the instruction of the policy modification instruction;
Before the server respectively receives downlink network resource occupation state information of the network interface reported by the first base station and/or the second base station after determining that the downlink network resource occupation ratio of the first base station and/or the second base station is higher than the predetermined threshold, the method further includes:
Storing a corresponding relation table in a fast translation buffer (TLB) of the server, wherein the table entry of the corresponding relation table comprises: identification information of the first transmission sub-stream and identification information of the second transmission sub-stream, allocation amounts of downlink network resources of the first transmission sub-stream and the second transmission sub-stream, network addresses of the first base station and the second base station, and downlink network resource occupation state information of the first base station and the second base station;
after receiving the downlink network resource occupation state information, the server obtains a network address of a downlink network resource occupation state information source, finds the corresponding relation by searching the network address of the downlink network resource occupation state information source and updates the received downlink network resource occupation state information to the downlink network resource occupation state information of the corresponding base station;
After the server sends the policy modification instruction, the method further comprises:
and after receiving the message that the first base station and/or the second base station successfully adjusts the downlink network resources, adjusting the downlink network resource occupation state information stored in the TLB according to the modification strategy instruction.
2. the method of claim 1, wherein: the server is a control plane device in the distributed network, the access device integrates a forwarding plane function, and the first transmission sub-stream and the second transmission sub-stream use different network interfaces; the method further comprises the following steps:
The server intercepts service messages which are sent to the first storage device and the second storage device respectively by the terminal device by using the first transmission sub-stream and the second transmission sub-stream;
The server analyzes the service message, and obtains the association information of the first transmission sub-stream and the second transmission sub-stream from the service message, wherein the association information comprises the stream identification information of the first transmission sub-stream and the second transmission sub-stream;
the server determines that the first transmission sub-flow and the second transmission sub-flow belong to the transmission sub-flow used by the terminal equipment according to the association information, and sends modification strategy information to the access equipment according to a service quality strategy;
and the access equipment modifies the uplink network resources occupied by the first transmission sub-flow and/or the second transmission sub-flow according to the indication of the modification strategy information.
3. The method of claim 1, wherein: the server is a control plane device in the distributed network, the access device integrates a forwarding plane function, and the first transmission sub-stream and the second transmission sub-stream use different network interfaces; the method further comprises the following steps:
after receiving the service message, the access device analyzes the service message to obtain the flow identification information carried in the service message, and if the flow identification information obtained by analysis is different from the previous flow identification information, the access device reports the flow identification information to the server;
and after receiving the stream identification information, the server analyzes the stream identification information to obtain a sub-stream sequence number and a stream identification, and if the sub-stream sequence number of the first transmission sub-stream and the stream sequence number of the second transmission sub-stream exist and the stream identifications are the same, the server determines that the first transmission sub-stream and the second transmission sub-stream both belong to the transmission sub-stream used by the terminal equipment.
4. A method according to claim 2 or 3, characterized in that: the sending, by the terminal device, the service packet to the access device using the first transport sub-stream and the second transport sub-stream includes:
the terminal equipment uses a first transmission sub flow to send a service message to the first base station, and the terminal equipment uses a second transmission sub flow to send a service message to the second base station;
the sending a modification policy to the access device according to the quality of service policy comprises:
the server determines the network resource occupied by the first service sub-flow needing to be modified according to the service quality strategy, and then sends the modification strategy information to the first base station; and/or the server determines that the network resource occupied by the second service sub-flow needs to be modified according to the service quality strategy, and then sends the modification strategy information to the second base station.
5. a distributed network, comprising: the system comprises a server, terminal equipment, access equipment and at least two storage devices; the method is characterized in that the terminal equipment supports the receiving and sending of service messages on two or more than two transmission sub-flows; the access device includes: a first base station and a second base station; it is characterized in that the preparation method is characterized in that,
The terminal device is configured to send a service packet to the access device using the first transport sub-stream and the second transport sub-stream, so that the access device forwards the received service packet to the first storage device and the second storage device, respectively;
The first storage device and the second storage device are further configured to send transmission sub-stream establishment requests to the server, respectively, to establish a transmission sub-stream for transmitting a downlink data packet with the terminal device;
the server is further configured to receive downlink transmission resource requests from the first storage device and the second storage device, parse the downlink transmission resource requests to obtain stream identification information of the first transmission sub-stream and the second transmission sub-stream, record the stream identification information of the first transmission sub-stream and the second transmission sub-stream, and allocate downlink network resources to the first transmission sub-stream and the second transmission sub-stream respectively;
The first storage device is further configured to send a data packet to the terminal device through the first base station using the downlink network resource corresponding to the first transmission sub-stream, and the second storage device sends a data packet to the terminal device through the second base station using the downlink network resource corresponding to the second transmission sub-stream;
the server is further configured to receive downlink network resource occupation state information of the network interface reported by the first base station and/or the second base station after determining that the downlink network resource occupation ratio of the first base station and/or the second base station is higher than a predetermined threshold, and determine whether to adjust the downlink network resource of the first transmission sub-stream and/or the downlink network resource of the second transmission sub-stream according to the downlink network resource occupation state information; if yes, sending a strategy modification instruction to the first base station and/or the second base station;
the first base station is further configured to, after receiving the policy modification instruction, adjust downlink network resources corresponding to the first transport sub-stream according to the instruction of the policy modification instruction; and/or the second base station is further configured to adjust, after receiving the policy modification instruction, downlink network resources corresponding to the second transmission sub-stream according to the instruction of the policy modification instruction;
The server is further configured to store a correspondence table in a fast translation buffer TLB of the server before the server receives downlink network resource occupation state information of the network interface reported by the first base station and/or the second base station after determining that the downlink network resource occupation ratio of the first base station and/or the second base station is higher than a predetermined threshold, where an entry of the correspondence table includes: identification information of the first transmission sub-stream and identification information of the second transmission sub-stream, allocation amounts of downlink network resources of the first transmission sub-stream and the second transmission sub-stream, network addresses of the first base station and the second base station, and downlink network resource occupation state information of the first base station and the second base station;
the server is further configured to obtain a network address of a source of the downlink network resource occupation state information after receiving the downlink network resource occupation state information, find the corresponding relationship by looking up the network address of the source of the downlink network resource occupation state information, and update the received downlink network resource occupation state information to the downlink network resource occupation state information of the corresponding base station;
the server is further configured to, after the server sends a modification policy instruction and receives a message that the first base station and/or the second base station successfully adjusts the downlink network resource, adjust the downlink network resource occupation state information stored in the TLB according to the modification policy instruction.
6. the distributed network of claim 5, wherein the server is a control plane device in the distributed network, the access device integrates forwarding plane functionality, and the first transport sub-flow and the second transport sub-flow use different network interfaces;
the server is configured to intercept service packets that the terminal device uses the first transmission sub-stream and the second transmission sub-stream to send to the first storage device and the second storage device, respectively;
analyzing the service message, and obtaining the association information of the first transmission sub-stream and the second transmission sub-stream from the service message, wherein the association information comprises the stream identification information of the first transmission sub-stream and the second transmission sub-stream;
Determining that the first transmission sub-flow and the second transmission sub-flow both belong to the transmission sub-flow used by the terminal equipment according to the association information, and sending modification strategy information to the access equipment according to a service quality strategy;
And the access device is configured to modify, according to the indication of the modification policy information, the uplink network resource occupied by the first transmission sub-stream and/or the second transmission sub-stream.
7. the distributed network of claim 6, wherein said terminal device, configured to send traffic packets to said access device using a first transport sub-flow and a second transport sub-flow, comprises:
using a first transmission sub-flow to send a service message to the first base station, and using a second transmission sub-flow to send the service message to the second base station by the terminal equipment;
the server, configured to send a modification policy to the access device according to the qos policy, includes:
determining network resources occupied by a first service sub-flow needing to be modified according to a service quality strategy, and sending modification strategy information to the first base station; and/or, determining that the network resource occupied by the second service sub-flow needs to be modified according to the service quality strategy, and then sending the modification strategy information to the second base station.
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| CN111800882B (en) * | 2020-06-18 | 2023-12-05 | 武汉慧联无限科技有限公司 | Method, device, server and storage medium for transmitting downlink data |
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| BR112016004142B1 (en) * | 2013-08-29 | 2022-05-17 | Telefonaktiebolaget Lm Ericsson (Publ) | METHOD, MULTI-PATH TRANSMISSION CONTROL PROTOCOL PROGRAMMER, MULTI-PATH TRANSMISSION CONTROL PROTOCOL PROXY, COMMUNICATION NETWORK, AND, COMPUTER-READable MEDIUM |
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