Enhanced Uplink Data Transfer via Traffic Volume Signaling
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Solution Overview
Problem
Conventional wireless communication systems face limitations in reporting detailed uplink traffic volume measurement information from Wireless Transmit/Receive Units (WTRUs) to Node-Bs, hindering efficient scheduling and resource management for enhanced uplink transmissions.
Innovation Solution
A method where WTRUs transmit an initial data transmission request message to Node-Bs when the buffered data exceeds a threshold, allowing for scheduled data transfer, with options to include a desired transport format combination or detailed traffic volume information, enabling efficient data transfer and scheduling decisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If conventional UL signaling methods are used, then the system maintains simplicity in signaling procedures, but the capacity to report detailed traffic volume measurement information from WTRU to Node-B is limited
Solution Approach 1:
The traffic volume measurement information is segmented into multiple parts: a first part containing detailed TVM information for individual data channels, and a second part containing aggregate or summary information. This segmentation allows comprehensive reporting while managing signaling capacity by transmitting different levels of detail selectively.
Solution Approach 2:
The patent introduces a new dimension to the signaling mechanism by adding multiple signaling fields (first signaling field for detailed TVM, second signaling field for aggregate information) to the uplink signaling message. This dimensional expansion enables richer information transmission without fundamentally changing the signaling protocol structure.
2Measurement precision
If the WTRU transmits detailed TVM information for every data channel, then the Node-B can make precise scheduling decisions, but the signaling message size exceeds the capacity of conventional UL signaling methods
Solution Approach 1:
The patent applies local quality by providing detailed TVM information (high precision) only for specific data channels that require precise scheduling, while using aggregate or summary information for other channels. This selective detail approach maintains measurement precision where needed while controlling overall signaling message size.
Solution Approach 2:
Instead of transmitting complete detailed TVM information for all data channels (excessive action), the patent transmits partial information - detailed TVM for some channels and aggregate information for others. This partial action approach achieves sufficient scheduling precision without exceeding signaling capacity.
3Productivity
If the WTRU waits for Node-B scheduling information before transmitting data, then resource management efficiency improves, but transmission latency increases for buffered data
Solution Approach 1:
The WTRU performs preliminary actions by transmitting an initial data transmission request message to the Node-B before actual data transmission, indicating the presence of buffered data. This preliminary notification allows the Node-B to prepare scheduling decisions in advance, enabling more efficient resource management while reducing the latency that would otherwise result from waiting for scheduling information.
Solution Approach 2:
The patent implements a feedback mechanism where the WTRU reports buffered data status to the Node-B, which then provides scheduling information back to the WTRU. This feedback loop enables the Node-B to make informed scheduling decisions based on actual buffer status, improving resource management efficiency while minimizing latency through timely feedback.
Data Source
AI summary
A wireless communication method and apparatus for transferring buffered enhanced uplink (EU) data from a wireless transmit/receive unit (WTRU), i.e., a mobile station, to a Node-B. The EU data is generated and stored in a buffer of the WTRU. The WTRU transmits a message to the Node-B including a request for a desired transport format combination (TFC) or data traffic indicator. The Node-B schedules one or more allowed EU data transmissions between the WTRU and the Node-B by transmitting an EU data scheduling message to the WTRU. The WTRU transmits all of the EU data stored in the buffer to the Node-B if the allowed EU data transmissions are sufficient to support transmission of all of the EU data stored in the buffer. Otherwise, the WTRU transmits a portion of the EU data along with the desired TFC or detailed traffic volume measurement (TVM) information to the Node-B.