Reduced Sequence Number Field for Inactive State Data Transmission
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In radio communication technologies, when user equipment (UE) transitions from an RRC idle or inactive state to a connected state, there is significant signaling overhead, which is not conducive to power saving, especially for small data transmissions.
Innovation Solution
A method for data transmission where the UE, in an inactive state, transmits a first type acknowledged mode data protocol data unit (AMD PDU) with a sequence number field bit length less than that of a second type AMD PDU used in a connected state, optimizing data carrying capacity and reducing bit overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If UE uses standard AMD PDU with full sequence number field bit length in inactive state, then reliability of data transmission is maintained, but signaling overhead increases and power consumption rises
Solution Approach 1:
The patent applies local quality by differentiating the sequence number field bit length based on the UE's operational state. In inactive state, a reduced bit length is used for small data transmissions, while the full bit length is reserved for connected state transmissions. This localized adaptation optimizes power consumption for inactive state operations without compromising the reliability required in connected state operations.
Solution Approach 2:
The patent implements dynamics by making the sequence number field bit length variable according to the UE's state (inactive vs. connected). The system dynamically adjusts the protocol data unit structure based on operational context, allowing the sequence number field to have different bit lengths (e.g., 5 bits for inactive state, 18 bits for connected state) to balance power efficiency and transmission reliability.
2Productivity
If UE transitions to connected state for small data transmission, then data transmission capability is ensured, but signaling overhead increases significantly
Solution Approach 1:
The patent extracts the essential data transmission functionality from the full connected state protocol and implements it in a simplified form suitable for inactive state. By removing unnecessary protocol elements (reducing sequence number field bit length from 18 bits to 5 bits) while retaining core transmission capabilities, the system enables small data transmissions without requiring full connection establishment, thus reducing signaling overhead.
Solution Approach 2:
The patent segments data transmission operations into different protocols based on data size and UE state. It creates a specialized AMD PDU format for inactive state with reduced overhead, distinct from the standard AMD PDU used in connected state. This segmentation allows the system to apply the appropriate protocol complexity level, avoiding unnecessary signaling for small transmissions.
3Quantity of substance
If reduced bit length sequence number field is used in inactive state, then bit overhead is reduced and more data can be carried, but sequence number precision decreases
Solution Approach 1:
The patent changes the parameter of sequence number field bit length based on operational state. In inactive state, it uses a reduced bit length (e.g., 5 bits) to maximize data carrying capacity for small transmissions, while in connected state, it uses the full bit length (e.g., 18 bits) for higher precision requirements. This parameter adaptation resolves the contradiction by matching precision to actual needs.
Solution Approach 2:
The patent applies partial action by using only the necessary portion of the sequence number field bit length for inactive state operations. Since small data transmissions require fewer sequence numbers, a reduced bit length provides sufficient precision while freeing up space for actual data payload, achieving optimal balance without the excessive precision of the full bit length format.
Data Source
AI summary
A method for data transmission is provided. The method includes: in response to the UE being in an inactive state, transmitting a first type acknowledged mode data protocol data unit (AMD PDU), wherein a bit length of a sequence number field of first type AMD PDU is less than a bit length of a sequence number field of a second type AMD PDU used in a connected state.