Uplink Message Reporting for Data Amount and Power Headroom
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current LTE systems face challenges in efficiently reporting data amount available for transmission and power headroom, and in supporting single-tone or multi-tone transmission modes, which cannot be effectively addressed through existing random access or RRC connection procedures.
Innovation Solution
The method involves adding information about data amount available for transmission, power headroom, and transmission mode support to uplink messages during random access or RRC connection procedures using reserved bits or redefining bit positions in the MAC subheader or control elements, such as BSR MAC CE, PHR MAC CE, or combined BSR_PHR MAC CE, to indicate the presence of this information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If existing random access or RRC connection procedures are used, then the system maintains standard protocol compatibility, but it cannot effectively report data amount available for transmission and power headroom information
Solution Approach 1:
The patent applies preliminary action by incorporating BSR and PHR information into uplink messages during the random access or RRC connection establishment phase, before actual data transmission begins. This allows the eNB to have advance knowledge of the UE's buffer status and power conditions, enabling proactive resource allocation and avoiding subsequent signaling overhead.
Solution Approach 2:
The patent merges multiple functions into existing uplink messages by combining BSR (Buffer Status Report) and PHR (Power Headroom Report) information with random access preamble or RRC connection messages. This consolidation allows simultaneous transmission of connection establishment information and resource allocation feedback without requiring separate signaling channels.
2Loss of information
If separate signaling channels are used for BSR and PHR reporting, then complete information can be transmitted, but signaling overhead increases
Solution Approach 1:
The patent combines BSR and PHR reporting into a single uplink message transmission during random access or RRC connection procedures. By merging these reports with existing control messages, the system transmits complete buffer status and power headroom information without requiring separate dedicated signaling channels, thus reducing overall signaling overhead.
Solution Approach 2:
The patent makes existing uplink messages multi-functional by enabling them to carry both traditional control information and BSR/PHR reporting data. This universality allows a single message to serve multiple purposes: connection establishment, buffer status reporting, and power headroom reporting, eliminating the need for additional specialized signaling resources.
3Productivity
If LTE systems use traditional uplink messaging, then protocol simplicity is maintained, but efficiency of uplink data transmission is reduced
Solution Approach 1:
The patent improves uplink transmission efficiency by performing preliminary reporting of BSR and PHR information during the random access or RRC connection setup phase. This advance reporting allows the eNB to pre-configure appropriate uplink resources and power parameters before actual data transmission begins, optimizing subsequent communication efficiency without requiring complex real-time negotiations.
Data Source
AI summary
The disclosed techniques provide a method and device for reporting information and for discontinuous transmission. In the disclosed techniques, at least one of the following information is to be added to the random access procedure or the RRC connection related procedure, that is the information about data amount available for transmission, Power headroom, data amount available for transmission and the power headroom, whether SingleTone or MultiTone is supported, whether CP transmission mode or UP transmission mode is configured, where the RRC connection related procedure includes, but is not limited to, any of the following, that is the procedure of RRC connection, RRC connection reestablishment, RRC connection resume. Reporting the uplink message solves the problem of reporting the information about the data available for transmission and/or power headroom in the random access procedure or RRC connection related procedure.