WO2016206121A1 - Method and device for optimizing routing of terminal cells, sdn controller and terminal cell - Google Patents

Method and device for optimizing routing of terminal cells, sdn controller and terminal cell Download PDF

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Publication number
WO2016206121A1
WO2016206121A1 PCT/CN2015/082575 CN2015082575W WO2016206121A1 WO 2016206121 A1 WO2016206121 A1 WO 2016206121A1 CN 2015082575 W CN2015082575 W CN 2015082575W WO 2016206121 A1 WO2016206121 A1 WO 2016206121A1
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terminalized
information
cell
cells
network side
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PCT/CN2015/082575
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French (fr)
Chinese (zh)
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张云飞
郑倩
雷艺学
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宇龙计算机通信科技(深圳)有限公司
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Priority to PCT/CN2015/082575 priority Critical patent/WO2016206121A1/en
Publication of WO2016206121A1 publication Critical patent/WO2016206121A1/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W40/00Communication routing or communication path finding
    • H04W40/02Communication route or path selection, e.g. power-based or shortest path routing

Abstract

The present invention provides an SDN-based method and device for optimizing routing of terminal cells, SDN controller and terminal cell. The SDN-based method for optimizing routing of the terminal cells applicable to the SDN controller comprises: allocating, by an SDN controller, address information to at least one terminal cell; recording status information of each of the at least one terminal cell, path information between each of the terminal cells and other terminal cell, and path information between each of the terminal cells and a base station; and configuring routing to a network side server for any one of the terminal cells according to the status information of each of the terminal cells, the path information between each of the terminal cells and the other terminal cell, and the path information between each of the terminal cells and the base station. The technical solution of the present invention enables the SDN controller to configure an optimal routing for each terminal cell flexibly, and thus increases the data transmission efficiency between the terminal cell and the network side server.

Description

Terminalized cell route optimization method, device, SDN controller and terminalized cell Technical field

The present invention relates to the field of communications technologies, and in particular, to an SDN-based terminalized cell route optimization method, an SDN-based terminalized cell route optimization apparatus, an SDN controller, and a terminalized cell.

Background technique

With the wide application of LTE (Long Term Evolution) technology, the traditional macro cell (Macrocell) encounters the bottleneck of network construction and coverage. The hotspots and blind spots of the network need to be flexibly deployed to improve. In response to the above problem, the operator deploys a small cell (Small Cell) to implement deep coverage and capacity enhancement of the network to support future 5G ultra-dense networking.

As shown in Figure 1, the network architecture diagram and comparison of the above three types of Small Cell schemes are given. The first type of Small Cell solution includes schemes for home base stations (such as Femtocell, Picocell, etc.), which require a cable-based backhaul and need to maintain the S1 and S5 interfaces on the cell-to-core side of the network. Access to the core network is only applicable to the areas where these cells are deployed. For areas where network coverage is not good enough to provide wireless coverage or areas that cannot provide backhaul, rapid deployment or short-term capacity improvement (such as public safety) cannot be implemented. Therefore, its flexibility is limited. The second type of solution includes the MiFi router solution. Although the solution is based on the wireless backhaul, the terminal access MiFi works in the WLAN (Wireless Local Area Networks) unlicensed band, which is easily interfered with QoS (Quality of Service, Quality of service) is difficult to guarantee. Therefore, the industry began to study the third type of scheme based on the terminal to provide Small Cell access, namely T-SC (Terminal Small Cell). The terminal implements access to the T-SC terminal and the wireless backhaul based on the T-SC terminal by using a D2D (Device-to-Device) technology and a Relay technology. Because T-SC terminals can provide access and wireless based on LTE licensed bands Backhaul makes the T-SC the most flexible and controllable Small Cell access solution.

In the existing 3GPP Small Cell network architecture (mainly the home base station), the packet data connection between the terminal and the network or the server side is based on the wired backhaul, and the route on the wired backhaul generally passes through the operator's access gateway. And then route the wired network according to the carrier's policies and configurations.

The prior art is only suitable for the traditional Small Cell architecture. In the traditional Small Cell architecture, the data plane routing from the Small Cell to the core network is controlled by a control plane entity such as an MME (Mobility Management Entity) and an HSS (Home Subscriber Server). At the same time, the data plane configuration of the S1 and S5 interfaces has actually largely determined the routing of the data plane. Under this architecture, from the P-GW (Packet Data Network Gateway) to the S5/S8 interface of the S-GW (Serving Gateway), and from the S-GW to the eNB (base station) The routing configuration above the S1 interface is actually determined substantially entirely by the location of the base station to which the terminal is connected and the topology of the operator.

Under the T-SC scenario, the prior art has the following defects: for the data plane routing in the T-SC scenario, that is, the route between the terminal aggregated by the T-SC and the network side server, according to the existing technology, The global information and the power consumption status of the T-SC terminal, the available bandwidth, and the cost of providing access cannot be effectively utilized, which may result in non-optimal routing.

Therefore, how to flexibly configure an optimal route in a T-SC scenario becomes a technical problem to be solved.

Summary of the invention

The present invention is based on at least one of the above technical problems, and proposes a new QoS (Software Defined Network)-based terminalized cell routing optimization scheme, so that the SDN controller can flexibly implement each terminalized cell. The optimal route is configured to improve the data transmission efficiency between the terminalized cell and the network side server.

In view of the above, the present invention provides an SDN-based terminalized cell route optimization method, which is applicable to an SDN controller, and includes: the SDN controller allocates address information to at least one terminalized cell; and records the at least one terminalization Status letter of each terminalized cell in the cell Information, path information between each of the terminalized cells and other terminalized cells, and path information between each of the terminalized cells and the base station; according to status information of each of the terminalized cells, The path information between each terminalized cell and other terminalized cells, and the path information between each of the terminalized cells and the base station, and the route to the network side server is configured to any of the terminalized cells.

In the technical solution, the status information of each terminalized cell, the path information between each terminalized cell and other terminalized cells, and the path information between each terminalized cell and the base station are recorded, and according to the recorded The information is configured to the route of the terminal-side cell to the network-side server, so that the SDN controller can comprehensively configure the optimal route for each terminalized cell in a comprehensive global topology, so as to improve the data transmission efficiency between the terminalized cell and the network-side server. .

In the above technical solution, preferably, the method further includes: configuring, when receiving the routing configuration request sent by the any terminalized cell, the route to the network side server to the any terminalized cell; or

The SDN controller actively configures the routing of the any terminalized cell to the network side server.

Specifically, the route that the SDN controller configures to the network side server to the terminalized cell may be a passive configuration (that is, reconfigured when receiving a routing configuration request sent by the terminalized cell), or is actively configured.

In the above technical solution, preferably, the status information of each of the terminalized cells includes: address information, energy consumption information, and available bandwidth information; and path information between each of the terminalized cells and other terminalized cells includes The path delay information and the path cost information; the path information between each of the terminalized cells and the base station includes path delay information and path cost information.

In the above technical solution, the step of configuring the route to the network side server to the any terminalized cell specifically includes:

The optimal route to the network side server is configured to any of the terminalized cells based on any one or more of the following factors: power consumption, delay, hop count, cost.

According to the second aspect of the present invention, an SDN-based terminalized cell route optimization method is also proposed, which is applicable to any terminalized cell, and includes: any one of the terminalized cells reporting the any terminal to the SDN controller. Status information of the cell, any of the terminal cells and other Path information between the terminalized cells, and path information between the any terminalized cell and the base station for recording by the SDN controller; receiving the SDN controller according to each of the at least one terminalized cell State information of the terminalized cell, path information between each of the terminalized cells and other terminalized cells, and path information between each of the terminalized cells and the base station, and configured to any of the terminalized cells a route to the network side server; the any terminalized cell transmits data to the network side server based on a route allocated to the network side server by the SDN controller.

In this technical solution, any terminalized cell sends status information of any terminalized cell, path information between any terminalized cell and other terminalized cells, and any terminalized cell and base station by transmitting to the SDN controller. Inter-path information enables the SDN controller to integrate the status information of each terminalized cell, the path information between each terminalized cell and other terminalized cells, and the path information between each terminalized cell and the base station, The routing of the terminalized cell to the network side server ensures that the SDN controller can integrate the global topology to configure an optimal route for each terminalized cell, so as to improve the data transmission efficiency between the terminalized cell and the network side server.

In the above technical solution, preferably, the method further includes: storing, by the any terminalized cell, routing information of the any terminalized cell allocated by the SDN controller to the network side server; determining any one of the terminals Whether the node status information in the routing information of the cell to the network side server changes, and if so, sending a routing configuration request to the SDN controller, so that the SDN controller reconfigures any of the terminalized cells Configure the route to the network side server.

In this technical solution, if the node state information in the routing information of any terminalized cell to the network side server does not change, when any of the terminalized cells needs to communicate with the network side server, the device can be directly used. The previously stored routing information does not need to be allocated again, which saves the time for re-configuring the routing information. If the node status information in the routing information of any terminalized cell to the network side server changes, the SDN controller needs to be reconfigured.

In the above technical solution, preferably, the method further includes: detecting whether a data transmission request is received, and if yes, performing determining whether the node state information in the routing information of the any terminalized cell to the network side server changes. step.

According to the third aspect of the present invention, an SDN-based terminalized cell route optimization apparatus is further provided, which includes: an allocating unit, configured to allocate address information to at least one terminalized cell; and a recording unit, And recording, in the at least one terminalized cell, status information of each terminalized cell, path information between each of the terminalized cells and other terminalized cells, and between each of the terminalized cells and the base station. a path information, a configuration unit, configured to: according to status information of each of the terminalized cells, path information between each of the terminalized cells and other terminalized cells, and between each of the terminalized cells and the base station Path information, routing to any terminalized cell to the network side server.

In the technical solution, the status information of each terminalized cell, the path information between each terminalized cell and other terminalized cells, and the path information between each terminalized cell and the base station are recorded, and according to the recorded The information is configured to be routed to the network side server by the terminalized cell, so that the SDN controller can configure the optimal route for each terminalized cell by integrating the global topology, so as to improve the data transmission efficiency between the terminalized cell and the network side server.

In the foregoing technical solution, the configuration unit is specifically configured to: when receiving the routing configuration request sent by the any terminalized cell, configure the any terminalized cell to the network side server Routing; or

The SDN controller actively configures the routing of the any terminalized cell to the network side server.

Specifically, the route that the SDN controller configures to the network side server to the terminalized cell may be a passive configuration (that is, reconfigured when receiving a routing configuration request sent by the terminalized cell), or is actively configured.

In the above technical solution, preferably, the status information of each of the terminalized cells includes: address information, energy consumption information, and available bandwidth information; and path information between each of the terminalized cells and other terminalized cells includes The path delay information and the path cost information; the path information between each of the terminalized cells and the base station includes path delay information and path cost information.

In the above technical solution, preferably, the configuration unit is specifically configured to: configure an optimal route to the network side server to the any terminalized cell based on any one or more of the following factors: energy consumption, delay, Hop count, cost.

According to a fourth aspect of the present invention, an SDN controller is further provided, comprising: An SDN-based terminalized cell route optimization apparatus suitable for an SDN controller as described in any one of the technical solutions.

According to the fifth aspect of the present invention, there is also provided an SDN-based terminalized cell route optimization apparatus, which is applicable to any terminalized cell, and includes: a reporting unit, configured to report any one of the terminalized cells to an SDN controller State information of any of the terminalized cells, path information between any of the terminalized cells and other terminalized cells, and path information between the terminalized cells and the base station, for the SDN The controller performs recording; the receiving unit is configured to receive, according to the status information of each terminalized cell in the at least one terminalized cell, the path information between each of the terminalized cells and other terminalized cells, And routing information between each of the terminalized cells and the base station, and configuring a route to the network side server to the any terminalized cell; and a data transmission unit, configured to allocate to the network based on the SDN controller The route of the side server transmits data to the network side server.

In this technical solution, any terminalized cell sends status information of any terminalized cell, path information between any terminalized cell and other terminalized cells, and any terminalized cell and base station by transmitting to the SDN controller. Inter-path information enables the SDN controller to integrate the status information of each terminalized cell, the path information between each terminalized cell and other terminalized cells, and the path information between each terminalized cell and the base station, The routing of the terminalized cell to the network side server ensures that the SDN controller can integrate the global topology to configure an optimal route for each terminalized cell, so as to improve the data transmission efficiency between the terminalized cell and the network side server.

In the above technical solution, the method further includes: a storage unit, configured to store routing information of the any terminalized cell allocated by the SDN controller to the network side server; and a determining unit, configured to determine the Whether the node status information in the routing information of the terminalized cell to the network side server changes; the processing unit, configured to determine, by the determining unit, routing information of the any terminalized cell to the network side server When the node state information changes, the route configuration request is sent to the SDN controller, so that the SDN controller reconfigures the route of the any terminalized cell configuration to the network side server.

In this technical solution, if the node state information in the routing information of any terminalized cell to the network side server does not change, then any of the terminalized cells needs to be connected with the network side server. When the communication is performed, the previously stored routing information can be directly used without re-allocation, which saves the time for re-configuring the routing information; if the node status information in the routing information of any terminalized cell to the network-side server changes, it is required. The SDN controller is reconfigured.

In the above technical solution, the method further includes: a detecting unit, configured to detect whether a data transmission request is received; and the determining unit is configured to: when the detecting unit determines that the data transmission request is received, determine the location Whether the node state information in the routing information of any of the terminalized cells to the network side server changes.

According to the sixth aspect of the present invention, a terminalized cell is further provided, comprising: an SDN-based terminalized cell route optimization apparatus applicable to any terminalized cell, as described in any one of the foregoing technical solutions.

Through the above technical solution, the SDN controller can flexibly configure an optimal route for each terminalized cell, and improve data transmission efficiency between the terminalized cell and the network side server.

DRAWINGS

FIG. 1 is a schematic diagram showing a network architecture of three Small Cell schemes in the related art;

2 shows a schematic flow chart of an SDN-based terminalized cell route optimization method according to an embodiment of the present invention;

3 shows a schematic block diagram of an SDN-based terminalized cell route optimization apparatus according to an embodiment of the present invention;

4 is a schematic flow chart showing an SDN-based terminalized cell route optimization method according to another embodiment of the present invention;

FIG. 5 is a schematic block diagram of an SDN-based terminalized cell route optimization apparatus according to another embodiment of the present invention; FIG.

An optimal path diagram of data access under given optimal criteria is shown in FIG. 6 in accordance with an embodiment of the present invention;

FIG. 7 shows a schematic flow chart of a method for implementing T-SC optimal routing based on an SDN controller in accordance with an embodiment of the present invention.

detailed description

The present invention will be further described in detail below with reference to the drawings and specific embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a full understanding of the invention, but the invention may be practiced otherwise than as described herein. Limitations of the embodiments.

2 shows a schematic flow chart of an SDN-based terminalized cell route optimization method in accordance with one embodiment of the present invention.

As shown in FIG. 2, an SDN-based terminalized cell route optimization method according to an embodiment of the present invention is applicable to an SDN controller, including: Step 202: The SDN controller allocates address information to at least one terminalized cell; Step 204: Record state information of each terminalized cell in the at least one terminalized cell, path information between each terminalized cell and other terminalized cells, and each of the terminalized cells and the base station Inter-path information; step 206, according to status information of each of the terminalized cells, path information between each of the terminalized cells and other terminalized cells, and between each of the terminalized cells and the base station Path information, routing to any terminalized cell to the network side server.

In the technical solution, the status information of each terminalized cell, the path information between each terminalized cell and other terminalized cells, and the path information between each terminalized cell and the base station are recorded, and according to the recorded The information is configured to the route of the terminal-side cell to the network-side server, so that the SDN controller can comprehensively configure the optimal route for each terminalized cell in a comprehensive global topology, so as to improve the data transmission efficiency between the terminalized cell and the network-side server. .

In the above technical solution, preferably, the method further includes: configuring, when receiving the routing configuration request sent by the any terminalized cell, the route to the network side server to the any terminalized cell; or

The SDN controller actively configures the routing of the any terminalized cell to the network side server.

Specifically, the route that the SDN controller configures to the network side server to the terminalized cell may be passively configured (that is, configured when the routing configuration request sent by the terminalized cell is received). Or active configuration.

In the above technical solution, preferably, the status information of each of the terminalized cells includes: address information, energy consumption information, and available bandwidth information; and path information between each of the terminalized cells and other terminalized cells includes The path delay information and the path cost information; the path information between each of the terminalized cells and the base station includes path delay information and path cost information.

In the above technical solution, the step of configuring the route to the network side server to the any terminalized cell specifically includes:

The optimal route to the network side server is configured to any of the terminalized cells based on any one or more of the following factors: power consumption, delay, hop count, cost.

3 shows a schematic block diagram of an SDN-based terminalized cell route optimization apparatus in accordance with one embodiment of the present invention.

As shown in FIG. 3, the SDN-based terminalized cell route optimization apparatus 300 is applicable to an SDN controller, including: an allocating unit 302, a recording unit 304, and a configuration unit 306.

The allocating unit 302 is configured to allocate address information to the at least one terminalized cell, and the recording unit 304 is configured to record state information of each terminalized cell in the at least one terminalized cell, and each of the terminalized cells and The path information between the other terminalized cells, and the path information between each of the terminalized cells and the base station; the configuration unit 306, configured to: according to the status information of each of the terminalized cells, each of the terminalized The path information between the cell and the other terminalized cells, and the path information between each of the terminalized cells and the base station, and the route to the network side server is configured to any of the terminalized cells.

In the technical solution, the status information of each terminalized cell, the path information between each terminalized cell and other terminalized cells, and the path information between each terminalized cell and the base station are recorded, and according to the recorded The information is configured to be routed to the network side server by the terminalized cell, so that the SDN controller can configure the optimal route for each terminalized cell by integrating the global topology, so as to improve the data transmission efficiency between the terminalized cell and the network side server.

In the foregoing technical solution, the configuration unit 306 is specifically configured to: when receiving the routing configuration request sent by the any terminalized cell, configure the any terminalized cell to the network side server. Routing; or

The SDN controller actively configures the routing of the any terminalized cell to the network side server.

Specifically, the route that the SDN controller configures to the network side server to the terminalized cell may be a passive configuration (that is, reconfigured when receiving a routing configuration request sent by the terminalized cell), or is actively configured.

In the above technical solution, preferably, the status information of each of the terminalized cells includes: address information, energy consumption information, and available bandwidth information; and path information between each of the terminalized cells and other terminalized cells includes The path delay information and the path cost information; the path information between each of the terminalized cells and the base station includes path delay information and path cost information.

In the foregoing technical solution, the configuration unit 306 is specifically configured to: configure an optimal route to the network side server to the any terminalized cell based on any one or more of the following factors: energy consumption, delay , hop count, cost.

The present invention also proposes an SDN controller (not shown) comprising: an SDN-based terminalized cell route optimization apparatus 300 as shown in FIG.

FIG. 4 shows a schematic flow chart of an SDN-based terminalized cell route optimization method according to another embodiment of the present invention.

As shown in FIG. 4, the SDN-based terminalized cell route optimization method according to another embodiment of the present invention is applicable to any terminalized cell, and includes: Step 402: The any terminalized cell reports to the SDN controller State information of any of the terminalized cells, path information between any of the terminalized cells and other terminalized cells, and path information between the terminalized cells and the base station, for the SDN The controller performs recording; step 404, receiving, by the SDN controller, status information of each terminalized cell in the at least one terminalized cell, path information between each of the terminalized cells and other terminalized cells, and Describe the path information between each terminalized cell and the base station, and configure the route to the network side server to the any terminalized cell; and in step 406, the any terminalized cell is based on the location allocated by the SDN controller. The route of the network side server transmits data to the network side server.

In this technical solution, any terminalized cell sends status information of any terminalized cell, path information between any terminalized cell and other terminalized cells, and any terminalized cell and base station by transmitting to the SDN controller. Between the path information, enabling the SDN controller to synthesize each The status information of the terminalized cell, the path information between each terminalized cell and other terminalized cells, and the path information between each terminalized cell and the base station, and the route to the network side server are configured to the terminalized cell, ensuring The SDN controller can integrate the global topology to configure an optimal route for each terminalized cell, so as to improve data transmission efficiency between the terminalized cell and the network side server.

In the above technical solution, preferably, the method further includes: storing, by the any terminalized cell, routing information of the any terminalized cell allocated by the SDN controller to the network side server; determining any one of the terminals Whether the node status information in the routing information of the cell to the network side server changes, and if so, sending a routing configuration request to the SDN controller, so that the SDN controller reconfigures any of the terminalized cells Configure the route to the network side server.

In this technical solution, if the node state information in the routing information of any terminalized cell to the network side server does not change, when any of the terminalized cells needs to communicate with the network side server, the device can be directly used. The previously stored routing information does not need to be allocated again, which saves the time for re-configuring the routing information. If the node status information in the routing information of any terminalized cell to the network side server changes, the SDN controller needs to be reconfigured.

In the above technical solution, preferably, the method further includes: detecting whether a data transmission request is received, and if yes, performing determining whether the node state information in the routing information of the any terminalized cell to the network side server changes. step.

FIG. 5 shows a schematic block diagram of an SDN-based terminalized cell route optimization apparatus in accordance with another embodiment of the present invention.

As shown in FIG. 5, the SDN-based terminalized cell route optimization apparatus 500 is applicable to any terminalized cell, including: a reporting unit 502, a receiving unit 504, and a data transmission unit 506.

The reporting unit 502 is configured to report, to the SDN controller, status information of any of the terminalized cells, path information between the any terminalized cell and other terminalized cells, and The path information between the terminalized cell and the base station is used for recording by the SDN controller, and the receiving unit 504 is configured to receive the SDN controller according to each terminalized cell in the at least one terminalized cell. Status information, each of the terminals is small The path information between the area and the other terminalized cells, and the path information between each of the terminalized cells and the base station, and the route to the network side server is configured to the any terminalized cell; the data transmission unit 506 uses Transmitting data to the network side server based on a route to the network side server allocated by the SDN controller.

In this technical solution, any terminalized cell sends status information of any terminalized cell, path information between any terminalized cell and other terminalized cells, and any terminalized cell and base station by transmitting to the SDN controller. Inter-path information enables the SDN controller to integrate the status information of each terminalized cell, the path information between each terminalized cell and other terminalized cells, and the path information between each terminalized cell and the base station, The routing of the terminalized cell to the network side server ensures that the SDN controller can integrate the global topology to configure an optimal route for each terminalized cell, so as to improve the data transmission efficiency between the terminalized cell and the network side server.

In the above technical solution, the method further includes: a storage unit 508, configured to store routing information of the any terminalized cell allocated by the SDN controller to the network side server; and a determining unit 510, configured to determine Whether the node status information in the routing information of the any terminalized cell to the network side server changes; the processing unit 512 is configured to determine, by the determining unit 510, the any terminalized cell to the network side When the node status information in the routing information of the server changes, a routing configuration request is sent to the SDN controller, so that the SDN controller reconfigures the route configured by the any terminalized cell to the network side server.

In this technical solution, if the node state information in the routing information of any terminalized cell to the network side server does not change, when any of the terminalized cells needs to communicate with the network side server, the device can be directly used. The previously stored routing information does not need to be allocated again, which saves the time for re-configuring the routing information. If the node status information in the routing information of any terminalized cell to the network side server changes, the SDN controller needs to be reconfigured.

In the above technical solution, preferably, the method further includes: a detecting unit 514, configured to detect whether a data transmission request is received; the determining unit 510 is specifically configured to: when the detecting unit 514 determines that the data transmission request is received And determining whether the node state information in the routing information of the any terminalized cell to the network side server changes.

The present invention also proposes a terminalized cell (not shown), comprising: an SDN-based terminalized cell route optimization apparatus 500 as shown in FIG.

The technical solution of the present invention will be described in detail below with reference to FIGS. 6 and 7.

The technical solution of the present invention mainly solves how to apply the SDN to the terminal to flexibly select the backhaul based on the T-SC access, thereby implementing the optimization of the data plane routing in the T-SC scenario. Specifically, it is to solve the problem of how to avoid the non-optimal routing between the aggregated terminal and the network side. The optimality here is based on different criteria, including the number of transmission hops, delay, terminal energy consumption, available bandwidth and cost. An optimal path diagram of data access under given optimal criteria is shown in FIG.

The invention proposes a technical solution for completing route optimization by the SDN controller and the T-SC terminal. Specifically:

The SDN controller configures subnet prefix information for the T-SC terminal and maintains node information and path information of all T-SC terminals, including: node information of each T-SC terminal, for example, subnet prefix information of the T-SC terminal, Energy consumption information, available bandwidth, etc.; D2D path information of each T-SC terminal and corresponding neighboring T-SC terminal, such as path delay, path cost, etc.; Uu of each T-SC terminal and corresponding eNB (ie, UMTS An air interface, in which UMTS is a Universal Mobile Telecommunication System, path information such as path delay, path cost, and the like.

The SDN controller forms a global topology based on the node information and the path information, and can calculate an optimal route from a terminal aggregated by one T-SC to a server on the network side from a global perspective. The optimal route can be energy-based, delay-based, hop-based, cost-based, etc., to support different optimal criteria (eg, lowest power consumption, minimum latency, minimum hop count, least cost, etc.). The SDN controller processes the best routing request from the T-SC terminal and responds. The SDN controller can also actively trigger the optimal routing configuration to modify a T-SC terminal to another destination IP address.

Each T-SC terminal maintains node information and path information forwarded by its own data plane, and uploads the latest node information and path information to the SDN controller, including node information of the corresponding T-SC terminal, for example, the T-SC terminal. Subnet prefix information, energy consumption information, available bandwidth, etc.; D2D path information of the T-SC terminal and the corresponding neighboring T-SC terminal, such as path delay, path cost, etc.; U-T terminal of the T-SC terminal and corresponding eNB Path information, such as path delay, path cost, etc.

During any period when no node information and path information related to the T-SC terminal are changed, the T-SC terminal can cache the optimal route obtained by the single query SDN controller to the local routing table, the next same data plane. The local routing table is preferentially executed during forwarding, thereby avoiding the delay and burden caused by frequent requests to the SDN server. Once any node information and path information changes, the T-SC terminal deletes the local cache information and requests the SDN controller for the data plane optimal route.

When the aggregated terminal data arrives at the T-SC, the destination IP address identifies the network side server to which the data plane arrives. The T-SC preferentially queries the local routing table to obtain the optimal routing path for the destination IP address under the given optimal criteria. If the routing information of the destination IP address cannot be found, the SDN controller reports the SDN controller. The optimal path selection is fed back, and the T-SC caches the current path selection to the local routing table.

In particular, the implementation of data optimization can also be triggered by the SDN according to the policy directly in a control-driven manner, that is, the driver that is not affected by the arrival of the terminal data, and actively triggers the modification of the optimal routing configuration of one T-SC terminal to another destination IP address. . Data drive and control drivers can be implemented in parallel.

The above process can be referred to FIG.

As shown in FIG. 7, a method for implementing T-SC optimal routing based on an SDN controller according to an embodiment of the present invention includes:

Step 702: Determine an SDN configuration policy. If the data is driven, go to step 704. If the control policy is used, go to step 710. The data driving policy is a routing allocation policy executed when receiving a data transmission request of the UE; the control driving policy is a routing allocation policy actively performed by the SDN controller.

Step 704, the aggregated UE data plane request includes the destination IP address.

In step 706, the T-SC queries the local routing table. If the query is available, step 712 is performed; otherwise, step 708 is performed.

In step 708, the T-SC requests an optimal routing path from the SDN controller.

In step 710, the T-SC receives the optimal routing path delivered by the SDN and caches it to the local routing table.

In step 712, the T-SC performs an optimal routing rule for the aggregated UE data plane.

In step 714, the UE data plane reaches the destination IP address.

The invention introduces the data access route optimization applied by the SDN to the T-SC access terminal, and establishes the global topology of the T-SC state information through the SDN controller to make a decision on the data forwarding under the preset optimal criterion, and realizes the optimal Routing configuration.

The technical solution of the present invention is described in detail above with reference to the accompanying drawings. The present invention provides a new SDN-based terminalized cell routing optimization scheme, so that the SDN controller can flexibly configure an optimal route for each terminalized cell. The data transmission efficiency between the terminalized cell and the network side server is improved.

According to an embodiment of the present invention, there is also provided a program product stored on a non-transitory machine readable medium for routing optimization of an SDN-based terminalized cell, the program product comprising a computer system Performing the following steps: machine executable instructions: allocating address information to at least one terminalized cell; recording state information of each terminalized cell in the at least one terminalized cell, and each of the terminalized cells and other terminalized cells Inter-path information, and path information between each of the terminalized cells and the base station; according to the state information of each of the terminalized cells, path information between each of the terminalized cells and other terminalized cells And routing information between each of the terminalized cells and the base station, and configuring a route to the network side server to any of the terminalized cells.

According to an embodiment of the present invention, there is also provided a non-transitory machine readable medium storing a program product for routing optimization of an SDN-based terminalized cell, the program product comprising means for causing a computer system to perform the following steps Machine executable instructions: allocating address information to at least one terminalized cell; recording state information of each terminalized cell in the at least one terminalized cell, and a path between each of the terminalized cells and other terminalized cells Information, and path information between each of the terminalized cells and the base station; according to state information of each of the terminalized cells, path information between each of the terminalized cells and other terminalized cells, and The path information between each terminalized cell and the base station is configured, and the route to the network side server is configured to any terminalized cell.

According to an embodiment of the present invention, there is also provided a program product stored on a non-transitory machine readable medium for routing optimization of an SDN-based terminalized cell, the program product comprising a computer system Machine executable instructions that perform the following steps: any terminalization The cell reports the status information of the any terminalized cell, the path information between the any terminalized cell and the other terminalized cell, and the path information between the terminalized cell and the base station to the SDN controller. For the SDN controller to record; receiving the SDN controller according to the status information of each terminalized cell in the at least one terminalized cell, the path information between each of the terminalized cells and other terminalized cells And the path information between each of the terminalized cells and the base station, and the route to the network side server is configured to the any terminalized cell; the any terminalized cell is based on the location allocated by the SDN controller The route of the network side server transmits data to the network side server.

According to an embodiment of the present invention, there is also provided a non-transitory machine readable medium storing a program product for routing optimization of an SDN-based terminalized cell, the program product comprising means for causing a computer system to perform the following steps Executable instructions: any terminalized cell reports status information of any of the terminalized cells, path information between any of the terminalized cells and other terminalized cells, and any of the foregoing And the path information between the terminal and the base station is used for recording by the SDN controller; and the SDN controller receives the status information of each terminalized cell in the at least one terminalized cell, and each of the terminalized cells Route information with other terminalized cells, and path information between each of the terminalized cells and the base station, and a route to the network side server to any of the terminalized cells; any of the terminalized cells Transmitting data to the network side server based on a route to the network side server allocated by the SDN controller.

According to an embodiment of the present invention, there is also provided a machine readable program, the program causing a machine to perform an SDN-based terminalized cell route optimization method according to any one of the technical solutions described above.

According to an embodiment of the present invention, there is also provided a storage medium storing a machine readable program, wherein the machine readable program causes a machine to perform an SDN-based terminalized cell according to any one of the technical solutions described above Route optimization method.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims (16)

  1. An SDN-based terminalized cell route optimization method, which is applicable to an SDN controller, and includes:
    The SDN controller allocates address information to at least one terminalized cell;
    Recording status information of each terminalized cell in the at least one terminalized cell, path information between each of the terminalized cells and other terminalized cells, and a path between each of the terminalized cells and the base station information;
    And according to the status information of each of the terminalized cells, the path information between each of the terminalized cells and other terminalized cells, and the path information between each of the terminalized cells and the base station, to any terminal The configuration of the cell to the network side server.
  2. The SDN-based terminalized cell route optimization method according to claim 1, further comprising:
    When receiving the routing configuration request sent by any of the terminalized cells, configuring a route to the network side server to any of the terminalized cells; or
    The SDN controller actively configures the routing of the any terminalized cell to the network side server.
  3. The SDN-based terminalized cell route optimization method according to claim 1 or 2, wherein the status information of each of the terminalized cells includes: address information, energy consumption information, and available bandwidth information;
    The path information between each of the terminalized cells and the other terminalized cells includes: path delay information and path cost information;
    The path information between each terminalized cell and the base station includes: path delay information and path cost information.
  4. The SDN-based terminalized cell route optimization method according to claim 1 or 2, wherein the step of configuring a route to the network side server to any of the terminalized cells comprises:
    The optimal route to the network side server is configured to any of the terminalized cells based on any one or more of the following factors: power consumption, delay, hop count, cost.
  5. An SDN-based terminalized cell route optimization method, applicable to any terminalized cell, characterized in that it comprises:
    The any terminalized cell reports the status information of the any terminalized cell, the path information between the any terminalized cell and another terminalized cell, and the any terminalized cell to the SDN controller. Path information between the base stations for recording by the SDN controller;
    Receiving, by the SDN controller, status information of each terminalized cell in the at least one terminalized cell, path information between each of the terminalized cells and other terminalized cells, and each of the terminated cells and the base station Between the path information, the route to the network side server is configured to any of the terminalized cells;
    The any terminalized cell transmits data to the network side server based on a route allocated by the SDN controller to the network side server.
  6. The SDN-based terminalized cell route optimization method according to claim 5, further comprising:
    Any one of the terminalized cells storing routing information of the any terminalized cell allocated by the SDN controller to the network side server;
    Determining whether the node state information in the routing information of the any terminalized cell to the network side server changes, and if yes, sending a routing configuration request to the SDN controller, so that the SDN controller reconfigures the Any route that the terminalized cell is configured to the network side server.
  7. The SDN-based terminalized cell route optimization method according to claim 6, further comprising:
    It is detected whether a data transmission request is received, and if so, a step of determining whether the node status information in the routing information of the any terminalized cell to the network side server changes.
  8. An SDN-based terminalized cell route optimization apparatus, which is applicable to an SDN controller, and includes:
    An allocating unit, configured to allocate address information to at least one terminalized cell;
    a recording unit, configured to record a shape of each terminalized cell in the at least one terminalized cell State information, path information between each of the terminalized cells and other terminalized cells, and path information between each of the terminalized cells and the base station;
    a configuration unit, configured to: according to status information of each of the terminalized cells, path information between each of the terminalized cells and other terminalized cells, and path information between each of the terminalized cells and the base station A route to a network side server is configured to any terminalized cell.
  9. The SDN-based terminalized cell route optimization apparatus according to claim 8, wherein the configuration unit is specifically configured to:
    When receiving the routing configuration request sent by any of the terminalized cells, configuring a route to the network side server to any of the terminalized cells; or
    The SDN controller actively configures the routing of the any terminalized cell to the network side server.
  10. The SDN-based terminalized cell route optimization apparatus according to claim 8 or 9, wherein the status information of each of the terminalized cells includes: address information, energy consumption information, and available bandwidth information;
    The path information between each of the terminalized cells and the other terminalized cells includes: path delay information and path cost information;
    The path information between each terminalized cell and the base station includes: path delay information and path cost information.
  11. The SDN-based terminalized cell route optimization apparatus according to claim 8 or 9, wherein the configuration unit is specifically configured to:
    The optimal route to the network side server is configured to any of the terminalized cells based on any one or more of the following factors: power consumption, delay, hop count, cost.
  12. An SDN controller, comprising: an SDN-based terminalized cell route optimization apparatus according to any one of claims 8 to 11.
  13. An SDN-based terminalized cell route optimization apparatus is applicable to any terminalized cell, and is characterized in that:
    a reporting unit, configured to report, to the SDN controller, status information of any of the terminalized cells, path information between the any terminalized cell and other terminalized cells, and the foregoing Path information between a terminalized cell and a base station for the SDN The controller performs recording;
    a receiving unit, configured to receive, according to state information of each terminalized cell in the at least one terminalized cell, path information between each of the terminalized cells and other terminalized cells, and each of the SDN controllers Routing information between the terminalized cell and the base station, and configuring a route to the network side server to the any terminalized cell;
    And a data transmission unit, configured to transmit data to the network side server based on a route allocated to the network side server by the SDN controller.
  14. The SDN-based terminalized cell route optimization apparatus according to claim 13, further comprising:
    a storage unit, configured to store routing information of the any terminalized cell allocated by the SDN controller to the network side server;
    a determining unit, configured to determine whether the node state information in the routing information of the any terminalized cell to the network side server changes;
    a processing unit, configured to send a route configuration request to the SDN controller when the determining unit determines that the node state information in the routing information of the any terminalized cell to the network side server changes, so that the The SDN controller reconfigures the routing of any of the terminalized cell configurations to the network side server.
  15. The SDN-based terminalized cell route optimization apparatus according to claim 14, further comprising:
    a detecting unit, configured to detect whether a data transmission request is received;
    The determining unit is specifically configured to: when the detecting unit determines that the data transmission request is received, determine whether the node state information in the routing information of the any terminalized cell to the network side server changes.
  16. A terminalized cell, comprising: an SDN-based terminalized cell route optimization apparatus according to any one of claims 13 to 15.
PCT/CN2015/082575 2015-06-26 2015-06-26 Method and device for optimizing routing of terminal cells, sdn controller and terminal cell WO2016206121A1 (en)

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