Software Overview

QoS Parameters

The following are configurable QoS parameters available on the base station:

•Traffic priority—This parameter defines the priority assigned to specified service flow. Services with higher traffic priority should be given lower delay and higher buffering preference. However this parameter should not take precedence over any other QoS parameters. The specific algorithm for traffic priorities depends on vendor solution. Available values for this parameter: 0-7 (higher value indicates higher priority).

The standard only provides recommendation with respect to using the traffic priority, but it is not a requirement. T standard is also clear that the scheduler behavior is left for vendors’ differentiation and is out of the standards’ scope.

•Maximum sustained traffic rate—This parameter defines the peak information rate of specified service flow. If rate is undefined or equal 0, then rate is limited by physical capacity and other connections. Specific implementation of this parameter depends on vendor solution. Available values: rate in bits per second (value does not include overhead caused by MAC headers and CRCs).

•Maximum traffic burst—This parameter defines the maximum burst size that is accommodated for the specified service flow. Available values: size in bytes.

•Minimum reserved traffic rate—This parameter defines the minimum rate reserved for specified service flow. It is in a sense the guaranteed rate. The specified rate shall be honored only when sufficient data is available for scheduling. Available values: bits per second (value does not include overhead caused by MAC headers and CRCs).

•Request/transmission policy—This parameter defines specific policy for selected service flow. This policy defines the “shall/shall not” parameters for the following policies:

–Broadcast bandwidth request opportunities

–Multicast bandwidth request opportunities

–Use piggyback requests with data

–Fragment data

–Suppress payload headers (CS parameter)

–Pack multiple service data units (SDUs) into single Media Access Control (MAC) Packet Data Unit (PDU)

–Include CRC in the MAC PDU.

•Tolerated jitter—This parameter defines the maximum delay variation for specified service flow. Available values: jitter in ms.

•Maximum latency—This parameter defines the maximum delay between the reception of a packet on network interface and the forwarding of the packet to the RF interface. Available values: delay in ms.

•Unsolicited grant interval—This parameter defines the nominal interval between successive data grant opportunities for specified service flow. Available values: interval in ms.

•Unsolicited polling interval—This parameter defines the maximal nominal interval between successive polling grants opportunities for specified service flow. Available values: interval in ms.

•ARQ enable—This parameter defines that ARQ (automatic repeat request) shall/shall not be used for specified service flow. This functionality is optional and depends on vendor solution. Available values: 0 – disabled, 1 – enabled.

ARQ must be enabled for all HARQ enabled service flow.

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Cisco Systems CGR1120K9 manual QoS Parameters
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CGR1120K9 specifications

Cisco Systems CGR1120K9 is a robust networking device designed specifically for the Internet of Things (IoT) and industrial applications. As a part of the Cisco Connected Grid Router series, the CGR1120K9 delivers reliable connectivity and supports various networking functionalities to enhance operational efficiency in challenging environments.

One of the prominent features of the CGR1120K9 is its rugged design, built to withstand harsh conditions typical in industrial settings. With an operating temperature range of -40 to +85 degrees Celsius, it is ideal for use in outdoor and remote locations, making it suitable for utilities, transportation, and critical infrastructure industries. Its compact form factor allows for flexible installation options, which is crucial in space-constrained environments.

The CGR1120K9 comes equipped with a range of interfaces, including Ethernet ports and serial interfaces, providing versatility in integrating with different devices and systems. It supports both wired and wireless connections, enabling seamless communication across the IoT landscape. Additionally, the router features a dedicated management interface for simplified configuration and monitoring, ensuring that network administrators can efficiently manage their deployments.

In terms of performance, the CGR1120K9 features advanced routing and security capabilities, including support for IPv6, virtual private networks (VPNs), and firewall functionalities. This ensures secure data transmission over the network while maintaining high-performance levels essential for real-time applications. The device is powered by Cisco's IOS XE software, which offers enhanced operational capabilities through advanced features such as software-defined networking (SDN) and automation.

Another key characteristic of the CGR1120K9 is its scalability. Organizations can easily expand their networks as their needs evolve, ensuring an investment that grows with them. The router is designed to work cost-effectively in both small and large-scale deployments, making it a flexible choice for various business environments.

The CGR1120K9 also supports a range of protocols and standards, ensuring compatibility with existing infrastructure and devices. This is crucial for organizations seeking to modernize their networks while leveraging existing investments in hardware and software.

In conclusion, the Cisco Systems CGR1120K9 stands out as a high-performance, rugged router tailored for the demands of IoT and industrial applications. With its robust features, advanced technologies, and characteristics, it empowers organizations to enhance connectivity and streamline operations in even the most challenging environments.
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