Communication Device With Per-Link Priorities for Low-Latency Data
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Solution Overview
Problem
Existing wireless LAN systems face challenges in efficiently transmitting data with low latency due to difficulties in simultaneous access control across multiple frequency bands, leading to delays in video and command data transmission, especially when voice data is prioritized over other data types.
Innovation Solution
A communication device and method that sets transmission priorities on multiple links for each access category, allowing preferential transmission of data with low latency requirements, such as video and voice data, while ensuring fair access across different frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If voice data is set as the highest priority in EDCA control, then voice data transmission is prioritized, but other data types (video, command data) cannot be transmitted preferentially and experience delays
Solution Approach 1:
The patent segments the transmission priority control by creating separate priority settings for each access category (AC_VO, AC_VI, AC_BE, AC_BG) on each link. This allows video data (AC_VI) and command data to have high priority settings on specific links independently of voice data priority, enabling parallel preferential transmission of different data types without mutual interference.
Solution Approach 2:
The patent introduces a new dimension of control by setting priority information on a per-link basis rather than globally. This multi-link priority configuration allows the system to transmit different access categories with different priorities simultaneously across different links, effectively adding a spatial dimension to priority management and resolving the conflict between voice and other data priorities.
2Productivity
If data is transmitted using multiple frequency bands, then transmission efficiency is improved, but simultaneous access control across multiple bands becomes difficult
Solution Approach 1:
The patent segments the access control mechanism by implementing independent priority settings for each link (frequency band). Each link can be configured with specific priority information for different access categories, allowing simplified individual control while achieving coordinated multi-band transmission. This segmentation reduces the complexity of simultaneous access control compared to centralized management.
Solution Approach 2:
The patent applies local quality by allowing different priority configurations for different links based on local requirements. Each link can have customized priority settings suited to its specific traffic patterns and quality requirements, enabling flexible and efficient multi-band operation without imposing a complex unified control structure across all bands.
3Ease of operation
If continuous frequency channels are used, then transmission is simplified, but high-speed communication cannot be achieved when continuous channels are unavailable
Solution Approach 1:
The patent implements multi-functionality by enabling the system to operate effectively with either continuous frequency channels or non-contiguous frequency bands. The link-based priority configuration works universally across different frequency arrangements, allowing the system to achieve high-speed communication through multiple separate bands when continuous channels are unavailable, while maintaining operational simplicity through standardized priority control mechanisms.
Data Source
AI summary
The present technology relates to a communication device and a communication method capable of transmitting data with a shorter waiting time. There is provided a communication device including a control unit that sets information regarding a priority of transmission on a plurality of links for each of access categories of data in a case where data is transmitted using a plurality of links corresponding to a predetermined frequency band. The present technology can be applied to, for example, a device constituting a wireless LAN system.