Coordinator-Based Resource Allocation for Direct Communication Broadcasts
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Solution Overview
Problem
In direct communication systems, the existing methods for broadcasting advertisements face issues such as resource contention, low resource utilization, and high power consumption due to devices competing for resources, leading to potential collisions and inefficient use of resources, especially in scenarios like streaming or video applications where equal priority is necessary.
Innovation Solution
A method and apparatus that utilize a coordinator to manage resource allocation by broadcasting a resource indication signal, allowing broadcast devices to reserve resources, reducing contention, and enabling predictable scheduling, while also allowing listening devices to efficiently receive messages of interest with reduced power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If devices contend for resources in direct communication system, then resource allocation is simple, but resource utilization is low and collisions occur
Solution Approach 1:
The patent introduces a coordinator as an intermediary entity that manages resource allocation between broadcast devices and listening devices. The coordinator receives broadcast assistance requests, determines resource allocations, and transmits resource indication signals to resolve conflicts and optimize resource utilization without requiring complex peer-to-peer negotiation between devices.
Solution Approach 2:
The coordinator performs preliminary resource allocation before actual broadcast transmissions occur. By determining and communicating resource allocations in advance through resource indication signals, the system prevents collisions and ensures efficient resource utilization before devices begin their broadcast operations.
2Ease of operation
If devices contend for resources in direct communication system, then device autonomy is maintained, but power consumption increases
Solution Approach 1:
The coordinator acts as a central authority that reduces power consumption by eliminating the need for devices to continuously monitor and contend for resources. Devices can enter low-power states while the coordinator manages resource allocation, reducing overall system power consumption while maintaining operational autonomy through the coordination mechanism.
Solution Approach 2:
Devices send broadcast assistance requests to the coordinator and receive resource allocations without continuous active monitoring. This self-service approach allows devices to conserve power by remaining in low-power states while the coordinator autonomously manages resource allocation based on received requests.
3Productivity
If coordinator manages resource allocation, then resource utilization improves, but device complexity increases
Solution Approach 1:
While the coordinator adds a system element, it simplifies the overall architecture by centralizing resource management logic. Individual devices benefit from reduced complexity as they no longer need complex contention resolution mechanisms, instead relying on straightforward request-and-allocation interactions with the coordinator.
Data Source
AI summary
A method for broadcast assistance in a direct communication system and an apparatus using the same are disclosed. The proposed method includes the following steps. A coordinator receives a broadcast assistance request message from a plurality of broadcast devices. The coordinator transmits a broadcast assistance confirmation signal to the broadcast devices and broadcasts a resource indication signal including a resource allocation. The broadcast devices respectively broadcasts an information message to at least one listening device according to the resource allocation acquired from listening to the resource indication signal, and the at least one listening device listens to one of the information messages having a category of interest according to the resource allocation acquired from listening to the resource indication signal.