GC-DCI Resource Reallocation for Mixed Video Traffic
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently reallocating uplink resources to support both periodic low resolution video traffic and bursty high resolution video traffic in smart video surveillance systems, leading to inefficient utilization of downlink resources.
Innovation Solution
The implementation of a method that configures user equipment (UE) with a set of group identifiers and transmits a group common radio downlink control indicator (GC-DCI) in a group common search space, indicating a change in uplink data resources. This allows UEs to adjust their frequency or time domain resources based on the GC-DCI, ensuring efficient resource allocation for both types of video traffic.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If uplink resources are configured to support periodic low resolution video traffic, then resource allocation is efficient for low resolution traffic, but the resources are insufficient to support bursty high resolution video traffic
Solution Approach 1:
The patent implements dynamic resource allocation by introducing a second uplink grant that can be activated on-demand for high resolution video traffic. The network can dynamically switch between the first grant (for periodic low resolution traffic) and the second grant (for bursty high resolution traffic), allowing the system to adapt resource allocation to varying traffic requirements without wasting resources during low-traffic periods
Solution Approach 2:
The patent changes the parameter of resource allocation from static to semi-static by using a configured grant mechanism. The second uplink grant is pre-configured but not always active, allowing rapid parameter changes when high resolution traffic bursts occur. This enables the system to quickly adjust resource allocation in response to traffic patterns without complex real-time scheduling
2Adaptability or versatility
If separate uplink grants are configured for low and high resolution video traffic, then both traffic types can be supported, but downlink resource utilization becomes inefficient
Solution Approach 1:
The patent extracts the high resolution video traffic requirements from the periodic scheduling mechanism and handles them through a separate configured grant. This allows the network to maintain efficient periodic scheduling for low resolution traffic while providing dedicated, on-demand resources for high resolution bursts, eliminating the need for continuous downlink scheduling messages for both traffic types
Solution Approach 2:
The patent segments uplink resources into two distinct grants: a first uplink grant for periodic low resolution video traffic and a second uplink grant for bursty high resolution video traffic. This segmentation allows each grant to be optimized for its specific traffic type while reducing overall downlink control overhead, as the network only needs to activate the second grant when high resolution traffic is detected
3Device complexity
If traditional uplink resource allocation is used, then configuration is simple, but computational overhead at the UE increases when handling both traffic types
Solution Approach 1:
The patent enables the UE to self-manage uplink resources through configured grants that are pre-configured with all necessary parameters. The UE can autonomously activate the second uplink grant when high resolution video traffic bursts occur, without requiring complex real-time scheduling decisions or extensive computational processing, thereby reducing UE energy consumption while maintaining simple configuration
Data Source
AI summary
A configuration of providing uplink resources that supports low throughput traffic and high throughput traffic, while providing efficient utilization of downlink resources. The apparatus configures at least one UE with a set of group identifiers, the set of group identifiers including at least one group identifiers. The apparatus transmits a GC-DCI in a GC search space, the GC-DCI indicates to the at least one UE a change of uplink data resources, the GC-DCI may be encoded using a group identifier from the set of group identifiers.