Methods and system for dynamic spectrum arbitrage policy driven quality of service

• US 9,648,545 B2
• Filed: 05/26/2014
• Issued: 05/09/2017
• Est. Priority Date: 05/28/2013
• Status: Active Grant

• Current Assignee: Rivada Networks, LLC
• Original Assignee: Rivada Networks, LLC
• Inventors: Smith, Clint, Surampudi, Purnima, Mishra, Vimal Kumar, Smith, Samuel
• Primary Examiner(s): Orgad, Edan
• Assistant Examiner(s): Lalchinthang, Vanneilian
• Application Number:
  US14/287,088
• Publication Number:
  US 20140355428A1
• Time in Patent Office: 1,079 Days
• Field of Search: 370230
• CPC Class Codes: H04L 41/0893 Assignment of logical groups to network elements
• CPC Class Codes: H04L 41/0894 Policy-based network configuration management
• CPC Class Codes: H04L 47/122 by diverting traffic away from congested entities
• CPC Class Codes: H04W 16/14 Spectrum sharing arrangements between different networks
• CPC Class Codes: H04W 28/0231 based on communication conditions dynamic wireless traffic scheduling definition based on channel quality criteria H04W72/54
• CPC Class Codes: H04W 28/0247 based on conditions of the access network or the infrastructure network central resource management H04W28/16
• CPC Class Codes: H04W 28/0289 Congestion control load shedding arrangements in network planning H04W16/08; performing reselection for handling the traffic H04W36/22; wireless traffic scheduling H04W72/12
• CPC Class Codes: H04W 36/22 for handling the traffic
• CPC Class Codes: H04W 48/06 based on traffic conditions
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 88/18 Service support devices; Network management devices

Abstract

A dynamic spectrum arbitrage (DSA) system includes a dynamic spectrum policy controller (DPC) and a dynamic spectrum controller (DSC) that together dynamically manage the allocation and use of resources (e.g., spectrum resources) across different networks. The DSC component may include wired or wireless connections to eNodeBs, a policy and charging rules function (PCRF) component/server, and various other network components. The PCRF may be configured to receive eNodeB congestion state information from the eNodeB, information identifying wireless devices attached to the eNodeB, categorize each of the identified wireless devices into a category selected from a plurality of categories, select a subset of the identified wireless devices based on the category into which they are categorized, and perform congestion response operations on the selected wireless devices so as to reduce the congestion of the eNodeB.

Claims

1. A method of reducing congestion of an eNodeB deployed in a first communication network participating in dynamic spectrum arbitrage (DSA) via a policy and charging rules function (PCRF) server that is deployed in the first communication network, the method comprising:

receiving, in a processor of the PCRF server from the eNodeB, eNodeB-information that includes;

eNodeB congestion state information; and

information identifying wireless devices attached to the eNodeB;

identifying, by the processor of the PCRF server, a first subset of the attached wireless devices as subscribers to the first communication network;

identifying, by the processor of the PCRF server, a second subset of the attached wireless devices as subscribers to a second communication network participating in the DSA operations;

categorizing, by the processor of the PCRF server, the identified first subset into a primary device category;

categorizing, by the processor of the PCRF server, the identified second subset into a secondary device category;

determining whether any of the wireless devices categorized into the secondary device category are prone to create congestion;

further categorizing the wireless devices determined to be prone to create congestion into a first subcategory;

determining whether any of the wireless devices categorized into the secondary device category include data sensitive applications;

further categorizing the wireless devices determined to include data sensitive applications into a second subcategory;

determining whether any of the wireless devices categorized into the secondary device category include delay sensitive applications;

further categorizing the wireless devices determined to include delay sensitive applications into a third subcategory;

selecting a third subset of the attached wireless devices based on the category and subcategories into which they are categorized; and

performing congestion response operations on the selected wireless devices so as to reduce the congestion of the eNodeB based on the categories and subcategories into which wireless devices attached to the eNodeB are categorized.

2. The method of claim 1, wherein performing congestion response operations on the selected wireless devices so as to reduce the congestion of the eNodeB based on the categories and subcategories into which wireless devices attached to the eNodeB are categorized further comprises:

preventing new devices from attaching to the eNodeB.

3. The method of claim 1, wherein performing congestion response operations on the selected wireless devices so as to reduce the congestion of the eNodeB based on the categories and subcategories into which wireless devices attached to the eNodeB are categorized further comprises:

preventing the creation of additional bearers by the selected wireless devices.

4. The method of claim 1, wherein performing congestion response operations on the selected wireless devices so as to reduce the congestion of the eNodeB based on the categories and subcategories into which wireless devices attached to the eNodeB are categorized further comprises:

preventing radio bearer upgrades on the eNodeB for the selected wireless devices.

5. The method of claim 1, wherein performing congestion response operations on the selected wireless devices so as to reduce the congestion of the eNodeB based on the categories and subcategories into which wireless devices attached to the eNodeB are categorized further comprises:

determining a location of a selected device;

identifying a non-congested target eNodeB based on the determined location; and

performing handover operations to hand over the selected device to the non-congested target eNodeB.

6. The method of claim 1, wherein performing congestion response operations on the selected wireless devices so as to reduce the congestion of the eNodeB based on the categories and subcategories into which wireless devices attached to the eNodeB are categorized further comprises modifying bearers for the selected devices so as to decrease bit rates consumed by the selected devices.

7. The method of claim 1, wherein performing congestion response operations on the selected wireless devices so as to reduce the congestion of the eNodeB based on the categories and subcategories into which wireless devices attached to the eNodeB are categorized further comprises deleting bearers for the selected devices so as to free up resources consumed by the selected devices.

8. The method of claim 1, wherein performing congestion response operations on the selected wireless devices so as to reduce the congestion of the eNodeB based on the categories and subcategories into which wireless devices attached to the eNodeB are categorized further comprises performing handover operations to hand over the selected devices to a non-congested target eNodeB in a different network than the PCRF.

9. The method of claim 1, wherein performing congestion response operations on the selected wireless devices so as to reduce the congestion of the eNodeB based on the categories and subcategories into which wireless devices attached to the eNodeB are categorized further comprises causing the eNodeB to drop the selected devices.

10. The method of claim 1, further comprising performing DSA operations that include:

determining in a dynamic spectrum policy controller (DPC) server an amount of radio frequency (RF) spectrum resources available for allocation within the first communication network that includes the PCRF server and eNodeB by communicating with a first dynamic spectrum controller (DSC) server in the first communication network;

allocating by the DPC server a portion of available RF spectrum resources of the first communication network for access and use by wireless devices of the second communication network; and

informing the second communication network that use of allocated RF spectrum resources may begin by communicating with a second DSC server in the second communication network.

11. The method of claim 1, further comprising:

monitoring network resource usage via an eNodeB processor of the eNodeB;

determining, via the eNodeB processor, whether the usage of network resources exceeds a threshold value;

restricting originations of new sessions of wireless devices attached to the eNodeB in response to determining that the usage of network resources exceeds the threshold value; and

restricting handins of additional wireless devices to the eNodeB in response to determining that the usage of network resources exceeds the threshold value.

12. The method of claim 11, further comprising:

classifying, via the eNodeB processor, the wireless devices attached to the eNodeB into priority groups,

wherein restricting originations of new sessions of the wireless devices attached to the eNodeB in response to determining that the usage of network resources exceeds the threshold value comprises restricting originations of new sessions of the wireless devices based on the priority groups into which the wireless devices are classified.

13. The method of claim 12, further comprising;

determining, by the eNodeB processor whether any of the wireless devices attached to the eNodeB are classified into the same priority group; and

sending, by the eNodeB processor, the eNodeB information to the PCRF component in response to determining that the wireless devices attached to the eNodeB are classified into the same priority group.

14. A policy and charging rules function (PCRF) server deployed in a first communication network participating in dynamic spectrum arbitrage (DSA), the PCRF server comprising:

a processor is configured with processor-executable instructions to perform operations comprising;

receiving eNodeB information from an eNodeB deployed in the first communication network, the received eNodeB information including;

eNodeB congestion state information; and

information identifying wireless devices attached to the eNodeB;

identifying a first subset of the attached wireless devices as subscribers to the first communication network;

identifying a second subset of the attached wireless devices as subscribers to a second communication network participating in the DSA operations;

categorizing the identified first subset into a primary device category;

categorizing the identified second subset into a secondary device category;

determining whether any of the wireless devices categorized into the secondary device category are prone to create congestion;

further categorizing the wireless devices determined to be prone to create congestion into a first subcategory;

determining whether any of the wireless devices categorized into the secondary device category include data sensitive applications;

further categorizing the wireless devices determined to include data sensitive applications into a second subcategory;

determining whether any of the wireless devices categorized into the secondary device category include delay sensitive applications;

further categorizing the wireless devices determined to include delay sensitive applications into a third subcategory;

selecting a third subset of the attached wireless devices based on the category and subcategories into which they are categorized; and

performing congestion response operations on the selected wireless devices so as to reduce the congestion of the eNodeB based on the categories and subcategories into which wireless devices attached to the eNodeB are categorized.

15. The PCRF server of claim 14, wherein the processor is configured with processor-executable instructions to perform operations such that performing congestion response operations on the selected wireless devices so as to reduce the congestion of the eNodeB based on the categories and subcategories into which wireless devices attached to the eNodeB are categorized further comprises:

preventing new devices from attaching to the eNodeB.

16. The PCRF server of claim 14, wherein the processor is configured with processor-executable instructions to perform operations such that performing congestion response operations on the selected wireless devices so as to reduce the congestion of the eNodeB based on the categories and subcategories into which wireless devices attached to the eNodeB are categorized further comprises:

preventing the creation of additional bearers by the selected wireless devices.

17. The PCRF server of claim 14, wherein the processor is configured with processor-executable instructions to perform operations such that performing congestion response operations on the selected wireless devices so as to reduce the congestion of the eNodeB based on the categories and subcategories into which wireless devices attached to the eNodeB are categorized further comprises:

preventing radio bearer upgrades on the eNodeB for the selected wireless devices.

18. The PCRF server of claim 14, wherein the processor is configured with processor-executable instructions to perform operations such that performing congestion response operations on the selected wireless devices so as to reduce the congestion of the eNodeB based on the categories and subcategories into which wireless devices attached to the eNodeB are categorized further comprises:

determining a location of a selected device;

identifying a non-congested target eNodeB based on the determined location; and

performing handover operations to hand over the selected device to the non-congested target eNodeB.

19. The PCRF server of claim 14, wherein the processor is configured with processor-executable instructions to perform operations such that performing congestion response operations on the selected wireless devices so as to reduce the congestion of the eNodeB based on the categories and subcategories into which wireless devices attached to the eNodeB are categorized further comprises modifying bearers for the selected devices so as to decrease bit rates consumed by the selected devices.

20. The PCRF server of claim 14, wherein the processor is configured with processor-executable instructions to perform operations such that performing congestion response operations on the selected wireless devices so as to reduce the congestion of the eNodeB based on the categories and subcategories into which wireless devices attached to the eNodeB are categorized further comprises deleting bearers for the selected devices so as to free up resources consumed by the selected devices.

21. The PCRF server of claim 14, wherein the processor is configured with processor-executable instructions to perform operations such that performing congestion response operations on the selected wireless devices so as to reduce the congestion of the eNodeB based on the categories and subcategories into which wireless devices attached to the eNodeB are categorized further comprises performing handover operations to hand over the selected devices to a non-congested target eNodeB in a different network than the PCRF.

22. The PCRF server of claim 14, wherein performing the processor is configured with processor-executable instructions to perform operations such that congestion response operations on the selected wireless devices so as to reduce the congestion of the eNodeB based on the categories and subcategories into which wireless devices attached to the eNodeB are categorized further comprises causing the eNodeB to drop the selected devices.

23. A system, comprising:

an eNodeB; and

a policy and charging rules function (PCRF) server comprising a PCRF processor coupled to the eNode via a communication link,

wherein the PCRF processor is configured with processor-executable instructions to perform operations comprising;

receiving eNodeB information from an eNodeB deployed in the first communication network, the received eNodeB information including;

eNodeB congestion state information; and

information identifying wireless devices attached to the eNodeB;

identifying a first subset of the attached wireless devices as subscribers to the first communication network;

identifying a second subset of the attached wireless devices as subscribers to a second communication network participating in the DSA operations;

categorizing the identified first subset into a primary device category;

categorizing the identified second subset into a secondary device category;

determining whether any of the wireless devices categorized into the secondary device category are prone to create congestion;

further categorizing the wireless devices determined to be prone to create congestion into a first subcategory;

determining whether any of the wireless devices categorized into the secondary device category include data sensitive applications;

further categorizing the wireless devices determined to include data sensitive applications into a second subcategory;

determining whether any of the wireless devices categorized into the secondary device category include delay sensitive applications;

further categorizing the wireless devices determined to include delay sensitive applications into a third subcategory;

selecting a third subset of the attached wireless devices based on the category and subcategories into which they are categorized; and

performing congestion response operations on the selected wireless devices so as to reduce the congestion of the eNodeB based on the categories and subcategories into which wireless devices attached to the eNodeB are categorized.