Uplink Control Channel Multiplexing in 5G Wireless Systems
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Solution Overview
Problem
In 5G wireless communication systems, there is a challenge in efficiently multiplexing uplink control channels with different formats to terminals, while maintaining resource allocation and cyclic shift intervals.
Innovation Solution
The solution involves a method and device for allocating uplink control channels of different formats to terminals in a wireless communication system. This includes allocating an uplink control channel of a first format to a first terminal and an uplink control channel of a second format to a second terminal based on the resource of the first format, while maintaining a cyclic shift interval and transmitting information on allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If uplink control channels of different formats are allocated to multiple terminals using separate dedicated resources, then each terminal can reliably transmit control information, but resource utilization efficiency deteriorates due to redundant allocations
Solution Approach 1:
The patent merges the resource allocation for different uplink control channel formats by allowing a first terminal using format 1 and a second terminal using format 0 to share the same physical resource blocks. This combining approach enables both terminals to transmit control information simultaneously on overlapping resources, improving resource utilization while maintaining reliability through format-specific transmission characteristics
Solution Approach 2:
The patent implements universal resource allocation where the same time-frequency resources can serve multiple functions by accommodating different uplink control channel formats from different terminals. The base station schedules format 0 and format 1 channels on the same resources, making the allocated resources multi-functional and thereby improving overall system productivity without compromising the reliability of control information transmission
2Productivity
If uplink control channels of different formats are multiplexed on the same resources, then resource utilization efficiency improves, but maintaining cyclic shift intervals and orthogonality becomes more difficult
Solution Approach 1:
The patent applies local quality by maintaining format-specific allocation characteristics within the unified resource pool. For format 1 channels, cyclic shift intervals are maintained to ensure orthogonality among format 1 terminals, while format 0 terminals use different allocation rules. This localized quality control for each format enables efficient multiplexing while preserving the necessary orthogonality and interval requirements for each channel type
Solution Approach 2:
The patent implements dynamic allocation management where the base station adaptively schedules format 0 and format 1 channels based on terminal requirements and channel conditions. The allocation is not static but dynamically adjusted to maintain cyclic shift intervals when needed and to optimize resource utilization, reducing the complexity of manual configuration while ensuring orthogonality is maintained through intelligent scheduling decisions
3Reliability
If cyclic shift intervals are maintained for format 1 channels, then orthogonality and interference avoidance are improved, but resource allocation flexibility deteriorates
Solution Approach 1:
The patent segments the resource allocation strategy by format type, applying cyclic shift interval constraints specifically to format 1 channels while allowing format 0 channels to use alternative allocation methods. This segmentation enables the system to maintain orthogonality where required (format 1) while preserving allocation flexibility for other formats, resolving the contradiction between reliability and adaptability through format-specific allocation rules
Data Source
AI summary
The present disclosure relates to a 5th generation (5G) or pre-5G communication system for supporting a higher data transmission rate than 4th generation (4G) communication systems such as long-term evolution (LTE). The present disclosure is for managing uplink control channels in a wireless communication system, and an operation method for a base station may include the steps of: allocating an uplink control channel of a first format to a first terminal; allocating an uplink control channel of a second format to a second terminal on the basis of a resource of the first format; and transmitting information about the uplink control channel allocation.