Service Class Identifier Codes for Dynamic QoS Bandwidth Allocation
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Solution Overview
Problem
Existing QoS systems face challenges in dynamically managing variable bandwidth demands for multimedia streams over IP networks, particularly in privately owned or dedicated networks, where one-size-fits-all standards may not meet specific needs, leading to sub-optimal bandwidth allocation and delays in re-configuration due to message-based systems.
Innovation Solution
Implementing a customized Quality of Service (QoS) solution using Service Class Identifier (SCID) codes in the DSCP field of IP packet headers, allowing for dynamic and rapid adjustment of bandwidth based on specific service classes, such as HD or 3DHD video content, without relying on industry-standard codes, thereby enabling efficient queue management and rapid response to content change requests.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If industry-standard QoS codes (DSCP) are used for interoperability, then compatibility between different manufacturers is improved, but customization for specific network needs and dynamic bandwidth management is limited
Solution Approach 1:
The patent applies local quality by defining custom SCID codes specific to cable operator networks while maintaining compatibility with standard DSCP field structure. The invention modifies only the necessary portion (using SCIDs in the DSCP field) without changing the overall IP packet format, allowing customization at the local network level while preserving global interoperability.
Solution Approach 2:
The patent implements dynamics by enabling rapid reconfiguration of bandwidth allocation through message-based systems that can dynamically assign SCID codes to different service classes. The system can quickly respond to changing bandwidth demands by modifying queue management parameters associated with different SCIDs without requiring network reconfiguration.
2Productivity
If message-based systems are used for bandwidth management, then QoS control is achieved, but reconfiguration delays occur
Solution Approach 1:
The patent applies preliminary action by pre-defining multiple service classes with associated SCID codes and queue management parameters before actual bandwidth allocation is needed. When reconfiguration is required, the system can quickly retrieve and apply pre-configured SCID-to-queue mappings rather than performing complex configuration operations in real-time, significantly reducing reconfiguration delays.
3Reliability
If standardized DSCP field usage is enforced, then network interoperability is maintained, but dynamic response to changing multimedia demands is limited
Solution Approach 1:
The patent applies universality by designing SCID codes that can be universally applied across different service classes and content types within the cable operator network. The same SCID coding mechanism works for various multimedia services (video, audio, data) and can be extended to support future service classes without requiring changes to the fundamental DSCP field structure or routing infrastructure.
Data Source
AI summary
Systems and methods can operable to provide a service class identifier field for packets transmitted over a network. Systems can include an interface, a control device and a transmitter. The interface can receive a data packet comprising a packet header and payload, and the packet header can include a differentiated services code point field. The control device can identify one or more network traffic parameters of a data stream associated with the received data packet and modify the data packet to include one or more service class identifier codes associated with the data packet. The transmitter can forward the modified data packet to a network device suited to interpret the service class identifier codes through one or more intermediate routers.