PDCP Packet Duplication Activation in Base Station Central Units
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing multi-carrier communications, particularly in cellular networks, where the integration of multiple carriers and connectivity options leads to complexities in resource allocation and data transmission, resulting in suboptimal performance and reliability.
Innovation Solution
The implementation of advanced modulation and transmission mechanisms, such as OFDM, CDMA, and hybrid techniques, along with dynamic modulation and coding schemes, is employed to optimize radio resource utilization across multiple carriers, enabling efficient data transmission and improved connectivity in multi-carrier systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple carriers and connectivity options are integrated to improve network capacity and data transfer rates, then the quantity of substance (network capacity) increases, but the device complexity (resource allocation management) increases
Solution Approach 1:
The patent segments the resource allocation management by introducing separate configuration mechanisms for different carriers and connectivity options. The network device independently configures packet duplication activation for each carrier, allowing granular control over resource allocation without managing all carriers as a single complex system.
Solution Approach 2:
The patent implements dynamic packet duplication activation where the network device can activate or deactivate duplication on different carriers based on current transmission requirements and radio conditions. This dynamic approach allows the system to adapt resource allocation in real-time, optimizing network capacity while maintaining manageable complexity through on-demand configuration.
2Reliability
If packet duplication is activated on multiple carriers to improve transmission reliability, then the reliability increases, but the loss of energy (increased transmission overhead) increases
Solution Approach 1:
The patent applies local quality by enabling packet duplication selectively on specific carriers based on their individual transmission characteristics and reliability requirements. Instead of uniformly activating duplication across all carriers, the network device configures duplication activation per carrier, allowing high-reliability carriers to use duplication while lower-reliability carriers may use single transmission, thus optimizing the reliability-to-energy ratio.
Solution Approach 2:
The patent changes the operational parameters of different carriers dynamically by activating or deactivating packet duplication based on current transmission needs. The network device can adjust the duplication activation state for each carrier independently, changing the transmission mode from single-copy to duplicated-copy transmission only when and where reliability enhancement is required, thereby minimizing energy overhead.
3Adaptability or versatility
If dynamic modulation and coding schemes are implemented to improve adaptability to transmission requirements, then the adaptability increases, but the device complexity (control mechanisms) increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring modulation and coding schemes for different carriers before actual data transmission. The network device establishes the dynamic modulation framework in advance, defining the available schemes and their activation conditions, which simplifies real-time control during transmission by relying on pre-established configurations rather than complex on-the-fly decisions.
Data Source
AI summary
A base station distributed unit receives, from a base station central unit, at least one information element indicating activation of a packet data convergence protocol (PDCP) packet duplication of at least one bearer of a wireless device. The base station distributed unit transmits, by and based on the activation: PDCP packets of the at least one bearer; and duplicated PDCP packets of the at least one bearer.