📝 Publications

Optimal Hub Placement and Deadlock-Free Routing for Payment Channel Network Scalability, Lingxiao Yang, Xuewen Dong, Sheng Gao, Qiang Qu, Xiaodong Zhang, Wensheng Tian, Yulong Shen. | PDF | PPT

• This paper proposes a novel solution called ​​Splicer​​ to address key scalability challenges in Payment Channel Networks (PCNs). The core idea is to use multiple Payment Channel Hubs (PCHs), termed ​​smooth nodes​​, to optimize network load balancing and enable high-performance, deadlock-free routing.
• Splicer offers a comprehensive solution that tackles both ​​network scalability​​ (through optimal PCH placement) and ​​performance scalability​​ (through its novel routing protocol).

AsyncSC: An Asynchronous Sidechain for Multi-Domain Data Exchange in Internet of Things, Lingxiao Yang, Xuewen Dong, Zhiguo Wan, Sheng Gao, Wei Tong, Di Lu, Yulong Shen, Xiaojiang Du. | PDF | PPT

• This paper proposes ​​AsyncSC​​, a novel asynchronous sidechain framework designed to enable secure and efficient multi-domain data exchange for the Internet of Things (IoT). The key innovation is addressing the limitation of existing sidechain solutions that require synchronous network conditions, which are often impractical for resource-constrained and intermittently connected IoT devices. AsyncSC achieves high performance and security in asynchronous environments through a new cryptographic primitive and a transaction ordering mechanism.

HiCoCS: High Concurrency Cross-Sharding on Permissioned Blockchains, Lingxiao Yang, Xuewen Dong, Wei Wang, Sheng Gao, Qiang Qu, Wensheng Tian, Yulong Shen. | PDF | PPT

• This paper proposes ​​HiCoCS​, a novel scheme designed to handle the challenge of highly concurrent cross-shard transactions (CSTxs) in permissioned blockchains, specifically Hyperledger Fabric.

• HiCoCS is presented as the first solution to effectively solve the problem of highly concurrent CSTxs. It achieves this by cleverly leveraging existing platform features (composite keys) for conflict-free processing, combined with advanced cryptography (FHE) for privacy.