While latency measures the average time it takes for a packet to reach its destination, jitter focuses on the fluctuations or variations in those arrival times. In a scenario with high jitter, even though the average latency might remain constant, the delivery times of individual packets can vary significantly. Latency refers to the delay caused by jitter in the network, resulting in the uneven delivery of data packets.?
What creates jitter in Satellite networks?
- Satellite Handoffs: As users connect to different satellites in the constellation during operation, brief handoffs can occur. These temporary disruptions in the data stream can lead to dropped packets.
- Network Congestion: During peak usage times, the network might become congested, either in the RF spectrum, Satellite backhaul network, or at Internet exchange points to other ISPs. This congestion can result in dropped packets and increased jitter, which is the variation in latency experienced over the connection.
- Weather Conditions: Adverse weather like heavy rain or snowfall can sometimes affect signal quality, leading to increased packet loss and jitter.
What Does Bad Network Jitter Do? (impacts various enterprise use cases, such as:)
- Voice over Internet Protocol (VoIP) calls: It causes disruptions, leading to distorted audio and difficulty understanding conversations.
- Video conferencing: It results in choppy video playback, making following discussions and nonverbal cues challenging.
- Online gaming: In gaming, even small delays caused by jitter can affect the responsiveness of controls, leading to a frustrating and laggy experience.
- Real-time data transmission: Applications relying on real-time data, such as financial trading or remote monitoring, can experience inconsistencies due to the deviation in the network signal pulses, potentially leading to costly errors.
- Cloud Service Usage -? As businesses and individuals increasingly rely on cloud services for storage, computing, and applications, low latency is crucial. It ensures quick access to data and applications stored in the cloud, enhancing productivity and user experience.?
SD-WAN optimizations for Jitter reduce / Network congestion:
- TCP optimization; enhances TCP performance over high-latency WAN links, especially those with high packet loss.
- Forward Error Correction (FEC) - FEC works by grouping data packets into blocks, creating additional parity packets with redundant information, and transmitting both.
- Data Policy-based routing:? Data policies provide a granular level of control over routing decisions, enabling organizations to tailor traffic routing based on specific criteria, such as application type, user identity, or network conditions.
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TCP/IP Over Satellite Yi Zhang
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Excellent presentation
Principal Consultant Avionics- PM, FSM, Digital Forensics / Security
3 个月and dont forget ...
Global Systems Engineering at Viasat
3 个月Very good post. This is really important to explain Customers that are looking at latency and speed only as quality of experience.
Executive Leader | Growth Strategist | LATAM Market Expansion | Enterprise Sales | Government | Closing Multi-Million Deals
3 个月Very good Vinicius De Morais. It’s important to understand that jitter is essential for good connectivity. Many people focus only on low latency and forget or don’t realize that jitter can impact the quality of the network.