Group Data Delivery Confirmation in Wireless Systems
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems lack an efficient method for confirming the delivery of group data to radio communication devices, leading to reduced reliability and throughput, especially when using selective ARQ protocols and long packets.
Innovation Solution
A method and apparatus that reserve dedicated acknowledgment slots for each radio communication device within a call hang time, allowing for a dedicated acknowledgment polling signal to be sent and received, ensuring successful delivery confirmation of group data by enabling retransmissions only when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If random delay is used for acknowledgment to reduce collision probability, then collision probability decreases, but overall throughput of group data is reduced
Solution Approach 1:
The acknowledgment process is segmented by allocating dedicated acknowledgment slots to individual radio devices within the group. Instead of random delays, each device has a specific time slot reserved for sending acknowledgments, which eliminates collisions while maintaining throughput efficiency.
Solution Approach 2:
The system performs preliminary allocation of acknowledgment slots before the actual data transmission. By pre-reserving specific time slots for each device's acknowledgment in the call hang time, the system avoids the need for random delays and ensures collision-free acknowledgments.
2Reliability
If selective ARQ protocol is used for delivery and acknowledgment, then delivery reliability improves, but throughput decreases due to retransmissions
Solution Approach 1:
The system implements efficient feedback mechanisms where acknowledgments are sent in dedicated slots immediately after data reception. This timely feedback allows the sender to quickly determine whether retransmission is necessary, reducing unnecessary retransmissions and maintaining high throughput while ensuring reliable delivery.
Solution Approach 2:
The system dynamically adjusts the call hang time based on the number of radio devices in the group. By making the acknowledgment slot allocation adaptive to group size, the system optimizes the balance between reliability and throughput, ensuring that retransmissions occur only when necessary.
3Productivity
If long packets are used for group data transmission, then data efficiency improves, but delivery reliability decreases without selective ARQ
Solution Approach 1:
The patent segments the acknowledgment process into dedicated slots for each device, allowing reliable confirmation of long packet delivery without requiring selective ARQ. By dividing the acknowledgment space into specific time slots, the system can confirm receipt of long packets reliably while maintaining transmission efficiency.
Data Source
AI summary
A method and apparatus for confirming delivery of group data to a plurality of radio communication devices in a wireless communication system. The wireless communication system includes a plurality of radio communication devices in communication with a sender. In operation, the sender sends group data to the plurality of radio communication devices and further determines a call hang time sufficient to contain a dedicated acknowledgment slot for each of the plurality of radio communication devices. The sender reserves an acknowledgment slot in the determined call hang time for each radio communication device and further sends an acknowledgment polling signal to each radio communication device, where the acknowledgment polling signal identifies the respective acknowledgment slot that is reserved for each radio communication device to acknowledge receipt of the group data. The sender accordingly receives an acknowledgment from the radio communication devices during its respective reserved acknowledgment slot.