Adaptive PUCCH Symbol Configuration for Wireless Coverage
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing the number of OFDM symbols for the Physical Uplink Control Channel (PUCCH), which affects coverage and resource utilization.
Innovation Solution
A method where a UE receives a first configuration for a PUCCH resource set associated with a first configured number of symbols, and then receives an indication from the base station to use a different number of symbols for transmitting the PUCCH, allowing for adaptive adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the number of OFDM symbols for PUCCH is fixed to a first configured number, then the resource allocation is simple and deterministic, but the coverage and reliability cannot be dynamically optimized
Solution Approach 1:
The patent implements dynamic adaptability by allowing the PUCCH to switch between a first configured number of symbols and a second number of symbols based on received indications from the base station. This enables the system to adapt the PUCCH duration dynamically according to varying channel conditions and traffic requirements, resolving the contradiction between fixed simplicity and dynamic optimization.
Solution Approach 2:
The patent changes the parameter of OFDM symbol count for PUCCH transmissions by receiving an indication to use a second number of symbols different from the first configured number. This parameter change allows the system to optimize coverage and reliability by adjusting the time duration of PUCCH transmissions based on current network conditions.
2Reliability
If the number of OFDM symbols for PUCCH is increased to improve coverage, then the reliability is enhanced, but the resource utilization efficiency decreases
Solution Approach 1:
The patent employs dynamic adjustment of PUCCH symbol count, switching between a first configured number and a second number of symbols based on received indications. This dynamic approach allows the system to use longer PUCCH transmissions only when necessary for coverage enhancement, while maintaining efficient short transmissions during normal conditions, thus balancing reliability improvement with resource utilization efficiency.
3Adaptability or versatility
If the PUCCH uses a fixed configuration, then the device complexity is low, but the system cannot adapt to changing communication conditions
Solution Approach 1:
The patent implements a self-service mechanism where the UE autonomously determines the PUCCH symbol count by receiving an indication from the base station and automatically applying the second number of symbols. This self-service approach enables adaptive behavior without requiring complex centralized control, as each UE independently adjusts its PUCCH configuration based on received indications, thus achieving adaptability with minimal additional complexity.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a base station, a first configuration for a physical uplink control channel (PUCCH) resource set, the first configuration associated with a first configured number of symbols for a PUCCH. The UE may receive, from the base station, an indication of a number of symbols to be used for transmitting the PUCCH, the indicated number of symbols being different from the first configured number of symbols. The UE may transmit the PUCCH using the indicated number of symbols. Numerous other aspects are provided.