Uplink Control Channel Sequence Aggregation for Wireless Systems
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face challenges in efficiently transmitting uplink control information due to increased data traffic and the need for higher speed services, requiring advanced methods for managing uplink control channels.
Innovation Solution
A method for transmitting uplink control channels using sequence-based approaches, specifically generating sequences through aggregation and applying cyclic shift indices, and employing Golay complementary sequences and orthogonal cover codes to enable efficient multiplexing and reduce the need for reference signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional reference signals are used for uplink control information transmission, then channel estimation accuracy is improved, but transmission overhead and resource consumption increase
Solution Approach 1:
The patent extracts and removes the separate reference signal component from the uplink control information transmission. Instead of transmitting dedicated reference signals for channel estimation, the system uses the uplink control information sequences themselves to carry both data and channel estimation functions, thereby eliminating unnecessary transmission overhead while maintaining estimation accuracy
Solution Approach 2:
The patent makes the uplink control information sequences serve multiple functions simultaneously: they carry the control information data and also provide the reference signal function for channel estimation. This multi-functionality eliminates the need for separate reference signals, reducing transmission overhead while maintaining measurement precision
2Productivity
If sequence aggregation methods are used to transmit multiple uplink control information bits, then transmission efficiency is improved, but sequence complexity increases
Solution Approach 1:
The patent merges multiple uplink control information sequences into a single aggregated sequence using element-wise multiplication. This combining operation allows multiple control information bits to be transmitted through one unified sequence, improving transmission efficiency while the mathematical operation itself remains computationally simple and manageable
Solution Approach 2:
The patent changes the parameters of individual sequences (such as cyclic shift values) to encode different control information bits, then aggregates them through multiplication. This parameter-based encoding approach allows efficient transmission of multiple bits while keeping the sequence generation and processing complexity relatively low
3Adaptability or versatility
If cyclic shift indices are applied for multiplexing uplink control information, then resource utilization is improved, but processing complexity increases
Solution Approach 1:
The patent applies different cyclic shift indices to different uplink control information sequences, creating local variations in the sequences. This local differentiation allows multiple users or channels to share the same time-frequency resources effectively, improving resource utilization while the cyclic shift operation itself remains a simple and efficient processing step
Data Source
AI summary
A method for transmitting an uplink control channel in a wireless communication system and a device therefor are disclosed. In detail, the method performed by a user equipment (UE) includes generating a third sequence by aggregating a first sequence with a second sequence, generating a fourth sequence by using the generated third sequence and a specific cyclic shift index corresponding to specific uplink control information, and transmitting the uplink control channel by using the generated fourth sequence, wherein the fourth sequence may be transmitted in at least one symbol constituting a resource region allocated for transmission of the uplink control channel, and wherein the fourth sequence may indicate the specific uplink control information transmitted through the uplink control channel.