Long PUCCH Frequency Hopping for Wireless Coverage
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Solution Overview
Problem
Existing methods for transmitting long Physical Uplink Control Channels (PUCCH) in wireless communication systems face challenges in efficiently supporting terminal multiplexing and ensuring sufficient coverage, especially when transmission power is limited.
Innovation Solution
A method and device that apply a frequency hopping scheme based on the number of symbols and spreading code to support terminal multiplexing, enabling the transmission of long PUCCHs in various numbers of symbols by intra-slot frequency hopping and using specific orthogonal sequences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If frequency hopping scheme is applied to long PUCCH transmission, then coverage is improved through frequency diversity, but device complexity increases due to additional signaling and processing requirements
Solution Approach 1:
The terminal determines the frequency hopping pattern and spreading code configuration autonomously based on pre-configured parameters received through higher-layer signaling. The base station provides initial configuration information including the number of symbols, spreading code length, and frequency hopping enablement, but the terminal self-configures the specific hopping pattern and sequence selection without requiring additional real-time signaling or complex base station processing.
2Quantity of substance
If intra-slot frequency hopping is applied to support terminal multiplexing, then multiple terminals can be multiplexed in one frequency resource, but the number of required orthogonal sequences increases
Solution Approach 1:
The long PUCCH transmission is divided into two segments: a first hop and a second hop within the same slot. Each hop uses a separate orthogonal sequence, allowing terminals to be multiplexed independently in each hop. This segmentation enables support for multiple terminals without requiring a single large set of orthogonal sequences covering all possible multiplexing scenarios simultaneously.
Solution Approach 2:
The system dynamically assigns different orthogonal sequences to different hops based on terminal multiplexing requirements. The terminal selects sequences from available sets configured by the base station, with the specific sequence assignment adapting to the number of active terminals and their resource allocations. This dynamic approach allows flexible multiplexing without pre-defining all possible sequence combinations.
Data Source
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AI summary
Disclosed are: a communication technique for merging, with loT technology, a 5G communication system for supporting a data transmission rate higher than that of a 4G system; and a system therefor. The present disclosure can be applied to intelligent services (for example, smart home, smart building, smart city, smart car or connected car, healthcare, digital education, retail, security and safety related services, and the like) on the basis of 5G communication technology and loT related technology. The present invention discloses various methods and devices for transmitting a long PUCCH.