Sequence Partitioning for Multi-User Uplink Interference
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing sequence selection for multiple user equipment (UEs) to transmit payloads over shared uplink control channels, leading to interference and reduced throughput.
Innovation Solution
The system introduces sequence partitioning by dividing a set of sequences into multiple sequence pools, each usable by a different UE, allowing multiple UEs to transmit payloads using the same resource allocation by selecting sequences from different pools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple UEs share the same sequence pool for uplink control channel transmission, then resource utilization is improved, but interference between UEs increases and reliability deteriorates
Solution Approach 1:
The patent divides a large sequence pool into multiple smaller sequence pools, where each UE is assigned to a specific sequence pool. This segmentation reduces interference between UEs while maintaining efficient resource utilization, as each UE selects sequences from its dedicated pool rather than competing for sequences from a shared pool.
2Adaptability or versatility
If a large sequence pool is used for multiple UEs, then adaptability is improved, but device complexity increases due to storage requirements
Solution Approach 1:
The patent segments the large sequence pool into multiple smaller pools distributed across different UEs. Each UE stores only its assigned sequence pool, reducing individual device complexity while maintaining system-wide adaptability through the collective diversity of all sequence pools.
Solution Approach 2:
Each UE is assigned a specific sequence pool tailored to its needs, allowing local optimization of storage requirements. The local quality of each UE's sequence pool is sufficient for its adaptability needs without requiring the full global sequence pool to be stored at each device.
3Reliability
If sequence partitioning is implemented for multiple UEs, then interference is reduced and reliability is improved, but system complexity increases due to pool management
Solution Approach 1:
The sequence pool partitioning and UE assignment is performed in advance by the base station, establishing a predetermined mapping between UEs and sequence pools. This preliminary action simplifies real-time operations, as UEs only need to select sequences from their pre-assigned pools without complex real-time management decisions.
Data Source
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AI summary
Methods, systems, and devices for wireless communications are described. In some systems, a user equipment (UE) or a base station, or both, may determine a configuration for partitioning a set of sequences into multiple sequence pools associated with multiple UEs. The UE or the base station, or both, may determine a sequence pool associated with the UE based on the configuration, which may include parameters or instructions for determining the sequence pool associated with the UE. The UE or the base station, or both, may select a subset of sequences from the sequence pool associated with the UE and construct a codebook including the subset of sequences. The UE may select a sequence from the constructed codebook based on a quantity of bits of a payload and may transmit the payload to the base station using the selected sequence.