Secondary Station Buffering for Uplink Resource Requests
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Solution Overview
Problem
In cellular networks, secondary stations face inefficiencies in transmitting buffer status reports and scheduling requests due to the need for allocated resources, leading to potential breaches in Quality of Service (QoS) and wasteful resource usage if they send requests too frequently or not frequently enough.
Innovation Solution
A method where secondary stations buffer data packets and wait for a predetermined time period before requesting an uplink transmission resource, only sending a scheduling request if no grant is received within that time, allowing for adjusted time periods based on data priority, buffer size, and radio channel conditions to optimize resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the secondary station transmits a scheduling request as soon as data arrives in the buffer, then the Quality of Service (QoS) criteria are met, but resource waste occurs and unnecessary requests are transmitted
Solution Approach 1:
The secondary station performs preliminary actions by waiting for a grant to be received before transmitting a scheduling request. This preliminary waiting period allows the system to avoid unnecessary requests while still ensuring timely data transmission. The station checks whether a grant has been received in the meantime before deciding to send an SR, thus avoiding redundant requests.
Solution Approach 2:
The system implements feedback mechanisms where the secondary station monitors whether a grant has been received from the primary station before transmitting a scheduling request. This feedback loop prevents unnecessary SR transmissions by checking the current grant status, thereby reducing resource waste while maintaining QoS.
2Loss of energy
If the secondary station waits for a grant to be received before transmitting a scheduling request, then resource waste is avoided, but QoS criteria may be breached
Solution Approach 1:
The secondary station waits for a grant to be received as a preliminary action before transmitting a scheduling request. This waiting period is configured to balance resource efficiency with QoS requirements, ensuring that the station does not transmit unnecessary requests while still maintaining timely data transmission.
Solution Approach 2:
The system dynamically adjusts the behavior of the secondary station based on real-time conditions. The station monitors whether a grant has been received and adapts its scheduling request transmission accordingly. This dynamic approach allows the system to optimize both resource efficiency and QoS by responding to changing network conditions.
3Productivity
If the secondary station transmits a scheduling request without a granted resource, then data transmission can be initiated, but the primary station cannot determine the suitable size of allocation
Solution Approach 1:
The secondary station performs preliminary actions by waiting for a grant to be received before transmitting a scheduling request. This preliminary waiting period allows the primary station to have already determined suitable allocation sizes, thereby avoiding the complexity of allocation determination while still enabling timely data transmission.
Data Source
AI summary
The present invention relates to a method for communicating between a primary station and a secondary station comprising (a) at the secondary station, upon arrival of a data packet to be transmitted to the primary station, buffering said data packet in a buffer, (b) at the secondary station, after the expiration of a time period starting at arrival of the data packet, transmitting to the primary station a request for an uplink transmission resource if a grant of uplink transmission resource is not received during the said time period, (c) at the primary station, granting to the secondary station an uplink transmission resource.