Binary CDMA RF Mesh Network

Technology

Binary CDMA 네트워크의 핑 레이턴시(지연 시간), 망 구성 시간, 검침 성능을 자사 실험실에서 테스트하여, 타사의 RF 통신 기술 성능 테스트 결과와 비교하였습니다.

Binary CDMA는 간섭 없이 안정적이고 빠른 통신을 가능하게 하는 첨단 무선 기술입니다. 시간 동기화를 기반으로 한 독자적인 구조로 스마트 그리드, IoT, 공공 인프라 환경에서 뛰어난 성능을 발휘합니다.

이 기술의 핵심 특징, 프레임 구조, 네트워크 설계를 통해 차세대 연결형 시스템에 최적화된 솔루션을 확인해보세요.

Technical Highlights

Frequency	Unlicensed 917~923.5 MHz Channel Number: 13 Channel Bandwidth: 200 KHz Modulation: 2 Level FSK	Customizable to meet client’s technical requirements No subscription fees
Multiplexing	Hybrid DMA	Combined advantages of CDMA, TDMA, and FDMA
Network Topology	Star, Tree, Mesh / 1:1, 1:N, N:M	Supports Device-to-Device ARAH (Auto Routing & Auto Healing)
Network Control	Separate Container Structure ⇒ Payload not affected	One Control Box for network control information and eight separate Payload Boxes for data transmission Elimination of mutual interference and resolution of the Near/Far problem through time synchronization (Time Synchronized Multiple Access)
Network Layer (Hops)	Max 255 (Max hop) Number of Sub-Masters per Master: 3
Number of Nodes	Max 240 (with 16KB MCU RAM)	More nodes with bigger RAM, Easy to add additional Nodes (Plug & Play Concept)
Communication Stability	Non-competing Synchronous Time Allocation Frequency hopping FEC (Forward Error Correction) 2nd Master Mode	Efficient and stable network by avoiding channel interference and conflict Fast and reliable data transmission.
Speed	Data Rate: 96 kbps	Payload: 64 kbps guaranteed
Range (LoS)	500 m	LoS based on the 200 mWatt limit in Korea Higher power will lead to much longer LoS.
Latency	100 ms	Fast connection Guaranteed data transmission Fast network configuration and modification
Connection Time	< 10 sec
Network Setup Time	< 5 min (5-hop)
Remote Console	Supported (Separate Time Slot ⇒ Payload not affected)	Easy maintenance

Frame Structure

The transmission frame consists of 128 containers.
Each container is composed of one Control Box and eight Payload Boxes.
The Control Box is used for synchronization and control information transmission, while the Payload Box is used for data transmission.
Information is transmitted in units of symbols, each 16 bits in length.
Depending on the processing gain, each symbol may carry either 8 bits or 5 bits of information.

Network Formation

Adaptive Spanning Tree Network: Clone Master
1. The Node relays the received registration request information to the higher-level Master.
2. The Master allocates communication resources to the optimal Node.
3. The Node that receives the resources becomes a Clone Master.
4. The Sensor transmits information through the nearest (or designated) Node.