Uplink Sounding Signal Control With Split Configuration and Triggering
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Solution Overview
Problem
Existing wireless communication networks face high signaling overhead due to the need for frequent configuration and initiation of uplink sounding signals, which is inefficient and resource-intensive.
Innovation Solution
A method is proposed where the configuration of sounding signal parameters is separated from the initiation of their transmission, allowing for slower, less frequent parameter updates via RRC signaling, and faster initiation commands via MAC signaling, thereby reducing signaling overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If sounding signal configuration and initiation are combined in the same signaling process, then the system ensures synchronized updates, but the signaling overhead increases and resource efficiency decreases
Solution Approach 1:
The patent segments the sounding signal control into two independent parts: configuration parameters (sent via RRC signaling) and initiation commands (sent via MAC signaling). This separation allows each part to be optimized independently - configuration can be updated slowly when needed, while initiation can respond quickly to channel conditions, reducing overall signaling overhead and improving resource efficiency.
Solution Approach 2:
The configuration parameters are sent in advance via RRC signaling before the actual sounding signal transmission is needed. This preliminary action allows the mobile station to be pre-configured with the necessary parameters, so that when initiation is commanded via MAC signaling, the transmission can occur immediately without additional configuration delays, reducing overall signaling overhead.
2Measurement precision
If configuration parameters are updated frequently to maintain accuracy, then channel estimation precision improves, but signaling overhead and network load increase
Solution Approach 1:
By separating configuration updates from initiation commands, the patent allows configuration parameters to be updated only when channel conditions change significantly, rather than frequently. The RRC signaling carries these infrequent updates, while MAC signaling handles rapid initiation responses, maintaining measurement precision while reducing signaling load.
Solution Approach 2:
The configuration parameters are updated periodically or event-driven based on channel condition changes, rather than continuously. This periodic action through RRC signaling maintains channel estimation accuracy while avoiding the excessive signaling load that would result from continuous updates.
3Reliability
If sounding signals are transmitted frequently to maintain channel knowledge, then channel quality information remains current, but uplink resource consumption increases
Solution Approach 1:
Configuration parameters are pre-configured via RRC signaling before sounding signal transmission. This allows the mobile station to transmit sounding signals efficiently when initiated by MAC commands, maintaining current channel quality information while minimizing unnecessary transmissions and reducing uplink resource consumption.
Solution Approach 2:
The patent enables dynamic control of sounding signal transmission through separate MAC initiation commands. The network can adaptively trigger sounding transmissions based on actual channel conditions and scheduling needs, ensuring channel quality information remains current while optimizing uplink resource usage by transmitting only when necessary.
Data Source
AI summary
The teachings presented herein propose a separation between the configuration of a sounding signal, and the initialization of the sounding signal. In other words, in at least one example embodiment proposed herein, a base station or other controlling entity sends, to a mobile station, an explicit or implicit indication that causes the mobile station to transmit a sounding signal according to sounding signal configuration parameters that at least a portion of which were previously and separately sent to the mobile station.