4 results about "Collision rate" patented technology

This invention relates to the field of autonomous driving technology and provides a method and system for automatically generating reversing routes. The method includes: acquiring a map of the vehicle before reversing, the vehicle's initial pose before reversing, and the pose of the final parking space; generating an initial reversing path using a reverse Reversing Route (RRT) algorithm; during the optimization process of the RRT algorithm, using a search function, selecting the node corresponding to the minimum value of the search function as the parent node of the target pose; continuing until all node poses in the random tree have reached the final parking space pose; extracting the initial reversing path based on the parent node relationships in the random tree; smoothing the initial reversing path to obtain the optimal reversing path, and displaying it in a holographic imaging system. This invention generates an initial reversing path using an improved reverse RRT algorithm and smooths it to obtain the optimal reversing path, which can reduce the collision rate of the vehicle waiting to reverse and improve the safety of reversing.

The application discloses a data security union processing method and system, belongs to the technical field of data management, solves the problem that due to the inherent defect of hash algorithm, hash collision cannot be completely avoided, the introduction of cross-shard retrieval will destroy the shard parallelism, significantly increase the merging complexity, and lead to the problem that the shard number matching may cause the actual associated data to be scattered in different shards due to hash collision and cross-shard retrieval is needed. Including the following steps: dynamic sharding, according to the data heat of the primary key. Through the dynamic sharding, distributed bloom filter conflict pre-checking and local redirection query technology, combined with multi-thread parallel processing and real-time load balancing optimization, the proportion of cross-shard retrieval caused by hash collision is limited, the hash collision rate is reduced while the shard parallelism is ensured, the super large data set is merged, and the problem that the shard number matching may cause the actual associated data to be scattered in different shards due to hash collision and cross-shard retrieval is needed.

This invention discloses an intelligent cooperative spatial modulation method and system based on GNN-MARL, mainly addressing the antenna resource competition and energy efficiency issues in multi-user spatial modulation systems. The method includes: first, establishing a multi-user interference graph model to abstract the interference relationships between users into a graph structure; second, using a graph attention network for feature extraction and message passing to update the environmental awareness embedding; then, employing multi-agent reinforcement learning, where each user agent independently selects distributed antennas based on local embedding; subsequently, combining Polar code channel coding and CCDM probabilistic shaping techniques to spatially modulate and map information bits for transmission; and finally, performing joint detection and decoding of the signal at the receiving end. This invention not only effectively reduces the large-scale computational complexity of the system but also significantly reduces the antenna collision rate and average transmit power, greatly improving system throughput. For example, in an 8-user scenario, it controls the collision rate to 19.6% and achieves a power saving of 32.8%, providing an efficient and practical innovative solution for intelligent network distributed resource management.

This invention discloses a multi-protocol intelligent adaptation communication switching system and method for four-way vehicles, belonging to the field of four-way vehicle communication technology. The system includes: acquiring communication signal characteristics and bus status data of the on-board perception module of the four-way vehicle; generating protocol adaptation configuration data through multi-protocol blind identification and virtual address mapping; iteratively optimizing the bus using a double-buffered ping-pong architecture and FPGA scheduling logic until the signal collision rate, bit error rate, and switching latency meet the standards, and outputting a protocol adaptation ready signal; performing seamless multi-protocol switching and bus transmission according to a time slot allocation strategy and polling priority, and collecting frame-level transmission data in real time. This invention solves the problems of heterogeneous communication protocols, bus conflicts, and high latency of multiple types of perception modules in four-way vehicles, achieving multi-protocol adaptive adaptation and seamless switching, and improving communication reliability and real-time performance.