Link Assignment Resend Mechanism for Wireless Communication Latency
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Solution Overview
Problem
Wireless communication systems face inefficiencies in maintaining older network systems to support new device capabilities, particularly due to unreliable link assignment messages and the need for resource-intensive assignment acknowledgments in sticky assignments.
Innovation Solution
Implementing a method where assignments are immediately re-sent if not decoded by the access node, eliminating the need for assignment acknowledgments and setting a limit on re-sent attempts to efficiently manage resource allocation and reduce latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If assignment acknowledgement messages are used to confirm reliable delivery of link assignment messages, then reliability of assignment delivery is improved, but system throughput deteriorates due to additional message overhead and latency
Solution Approach 1:
The patent extracts and eliminates the assignment acknowledgement message from the communication protocol. Instead of using separate ACK messages to confirm assignment delivery, the system relies on the uplink data transmission itself as implicit confirmation that the assignment was received and executed successfully
Solution Approach 2:
The uplink data transmission serves a dual purpose: it both carries user data and simultaneously confirms receipt of the assignment message. The successful transmission of uplink data on the assigned resources self-validates that the assignment was correctly received and acted upon, eliminating the need for separate acknowledgement mechanisms
2Reliability
If assignment acknowledgments are sent for every link assignment message, then reliability of communication is improved, but resource consumption deteriorates due to additional time and power usage
Solution Approach 1:
The patent merges the function of data transmission with the function of assignment acknowledgement. The uplink data transmission on assigned resources simultaneously achieves two goals: delivering user data and confirming receipt of the assignment message, thereby eliminating redundant power consumption from separate ACK transmissions
Solution Approach 2:
The system maintains continuous useful action by having mobile stations transmit uplink data continuously on assigned resources without interruption for separate acknowledgement messages. This eliminates idle time and power consumption associated with sending and processing dedicated ACK messages
3Ease of operation
If sticky assignments are used where assignments are kept until de-assigned, then ease of operation is improved, but reliability deteriorates when assignment messages are not delivered reliably
Solution Approach 1:
The patent implements implicit feedback through uplink data transmissions. When a mobile station successfully transmits data on assigned resources, this serves as feedback confirming reliable receipt of the assignment message. This feedback mechanism allows the base station to verify assignment delivery without adding complex acknowledgement protocols
Data Source
AI summary
Systems and methodologies are described that facilitate communication by supplying an immediate re-send of an assignment, when such assignment is not decoded by an access node (“AN”). In one embodiment, the assignment to AT can be re-sent immediately, hence mitigating a requirement for the AT to indicate that “Yes” the assignment was received, or “No” that the assignment was not received. Accordingly, if the AN does not decode the assignment, the assignment is re-sent, and a request latency can be removed.