This chapter defines the specifications, operation, and verification procedures for transport route optimization, GPS- and communication-based real-time tracking, and route risk assessment. The standard employs multiple Global Navigation Satellite Systems (GNSS) — GPS, Galileo, BeiDou, GLONASS, and the Korean Augmentation Satellite System (KASS). In Korea, the LTE-M cellular networks of SK Telecom, KT, and LG U+, and the ground infrastructure of Incheon International Airport Corporation, are the core resources. This chapter is directly integrated with the post-market surveillance reporting automation of the Korea Airports Corporation (KAC), the Korean Register (KR), and the Ministry of Food and Drug Safety (MFDS).
Cryogenic transport route optimization differs fundamentally from typical cargo logistics in its constraints. This section organizes the four optimization priorities of this standard — fastest, safest, cost, and balanced — and their application in the Korean transport environment.
| Priority | Core Variable | Recommended Scenario in Korea |
|---|---|---|
| fastest | Minimize transit time | Emergency evacuation, CAR-T clinical trial specimens |
| safest | Avoid risks (avoid hazardous goods, bypass accident-prone segments) | Rare specimens, single-specimen transport |
| cost | Minimize cost | Bulk distribution, routine storage optimization |
| balanced | Weighted sum of time, safety, and cost | Routine inter-facility transport |
This standard recommends the use of three algorithms: Dijkstra's algorithm for shortest paths from a single source to all destinations; A* algorithm for fast shortest path search based on a heuristic function; and multi-objective optimization such as NSGA-II or Pareto optimal solutions. The K-Routing open-source library of the Electronics and Telecommunications Research Institute (ETRI) provides the standard implementation of these three algorithms.
This standard requires the evaluation of the following eight risk factors for every candidate route:
The location tracking of this standard requires not a single GPS system but a combination of multiple GNSS systems. In Korea, the five systems — US GPS, EU Galileo, China BeiDou, Russia GLONASS, and the Korean Augmentation Satellite System (KASS) — are all available.
| System | Operating Authority | Korea Reception Accuracy | Use in This Standard |
|---|---|---|---|
| GPS | United States | ±5 m (standalone) | Primary GNSS |
| Galileo | EU | ±4 m (standalone) | Redundancy 1 |
| BeiDou | China | ±5 m (standalone) | Redundancy 2 (strength in Asia) |
| GLONASS | Russia | ±6 m (standalone) | Redundancy 3 (strength at high latitudes) |
| KASS | Korea (MOLIT) | ±1 m (augmented) | Korean precision navigation |
KASS is a satellite-based augmentation system operated by the Korean Ministry of Land, Infrastructure and Transport (MOLIT) that augments the precision of GPS, Galileo, BeiDou, and GLONASS. Since the start of operation in 2022, KASS has guaranteed location accuracy to ±1 m within Korean airspace and territorial waters, and the use of KASS is essential when applying this standard in Korea. The operating responsibility for KASS lies with the Korea Aerospace Research Institute (KARI), and ETRI administers the terminal communication standards.
Simultaneous reception of GPS, Galileo, BeiDou, and GLONASS improves accuracy from the ±5 m of standalone GPS to ±2 m. Adding KASS augmentation improves accuracy further to ±1 m. This standard recommends the simultaneous reception of all five systems. A 2024 study by the KAIST Graduate School of Medical Science and Engineering reported that this combination provides stable location tracking even in urban, tunnel, and indoor environments.
This section organizes the 5-minute reporting interval of the real-time tracking system, communication redundancy, and integration with Korean infrastructure.
This standard applies a 5-minute location reporting interval as the default during normal transport. An automatic alarm is raised if location reporting is disrupted for 15 minutes or more, and an emergency mode is activated for disruptions of 30 minutes or more. In Korea, the LTE-M networks of SK Telecom, KT, and LG U+ provide nationwide signal quality of 99.7% or higher, ensuring that the 5-minute reporting frequency of this standard is reliably maintained.
Within Korean airspace, the air traffic control (ATC) of the Korea Airports Corporation (KAC) and the cargo tracking system of Incheon International Airport Corporation provide auxiliary information. Within Korean territorial waters, the Automatic Identification System (AIS) data of the Ministry of Oceans and Fisheries is available, with simultaneous integration of the container tracking database of the Korean Register (KR). The standard's Korean application recommends automatic data synchronization with these three systems.
The real-time tracking system requires the redundancy of three communication channels. Primary channel: 4G LTE-M (SK Telecom, KT, LG U+). Auxiliary channel 1: NB-IoT (low-signal environments). Auxiliary channel 2: Iridium satellite communication (maritime and polar transport). In Korea, SK Telecom holds the global Iridium partnership, so Iridium satellite communication is automatically activated for international air and sea transport.
This section defines the detection of deviation from a pre-planned route, automatic alarms, and emergency response scenarios.
An automatic alarm is raised when the route deviates from the pre-planned path by 5 km or more. Deviation causes are classified into four categories: predictable deviation (traffic congestion, road control — automatic route recalculation); unpredictable deviation (accident, natural disaster — requires operator intervention); intentional deviation (security threat, attempted theft of specimens — immediate police and MFDS notification); and communication-disruption deviation (no GPS signal — multi-GNSS augmentation active).
On deviation detection, the system executes the following five-stage automatic alarm. Stage 1 (immediate): operator SMS, email, mobile app push. Stage 2 (5 minutes): notification of the specimen owner. Stage 3 (15 minutes): automatic reporting to the MFDS e-cris system (intentional deviations only). Stage 4 (30 minutes): notification of KR or KIAST (for sea or air). Stage 5 (1 hour): notification of the Korea Customs Service (when in cross-border transit).
This standard requires the application of predefined SOPs for the following six scenarios. This section provides only a brief overview; detailed SOPs appear in Chapter 6 (Emergency Response).
The specifications of this chapter are directly integrated with Korea's transport route, GPS, and real-time tracking infrastructure.
Adoption requires the collaboration of the following parties. The Ministry of Land, Infrastructure and Transport (MOLIT) is the lead ministry for KASS operation; the Korea Aerospace Research Institute (KARI) is responsible for system operation of KASS. The Korea Airports Corporation (KAC) and Incheon International Airport Corporation handle airport infrastructure; the Ministry of Oceans and Fisheries (MOF) handles port infrastructure. MFDS handles post-market surveillance reporting through the e-cris system. The Korea Expressway Corporation provides road accident and control data, and the Korea Meteorological Administration provides weather forecasts.
The LTE-M networks of SK Telecom, KT, and LG U+ are the core communication infrastructure of this chapter. Each carrier's IoT platform (SKT ThingPlug, KT IoT Makers, LG U+ IoT Cloud) fully supports MQTT 5.0 QoS Level 2 of this standard. On the cloud side, Kakao Cloud, Naver Cloud Platform, and NHN Cloud provide GPS data processing infrastructure.
All seven of Hanjin Logistics, CJ Logistics, Lotte Global Logistics, Korea Post, FedEx Korea, DHL Korea, and UPS Korea satisfy the GPS tracking standard of this chapter. In particular, the international express networks of FedEx Korea, DHL Korea, and UPS Korea jointly leverage KASS and Iridium satellite communication to guarantee global traceability.
The six tertiary general and national medical centers — Seoul National University Hospital, Samsung Medical Center, Asan Medical Center, Severance Hospital, the National Cancer Center, and the National Medical Center — and five research institutions — KRIBB, KAIST, KIST, KRICT, and KFRI — apply the GPS tracking standard of this chapter on a priority basis.
This chapter is connected to the following Korean statutes. Act on the Protection and Use of Location Information — personal information protection of GPS data. Aviation Safety Act Article 70 — location tracking obligation for dangerous goods transport. Shipping Act — AIS obligation for sea transport. Trucking Transport Business Act Article 35 — GPS obligation for dangerous goods transport vehicles. Customs Act Article 226 — submission of location tracking data on cross-border transit. Human Tissue Safety and Management Act Article 13 — transport traceability. Bioethics and Safety Act Article 35 — embryo transport traceability.
This section analyzes cases where the standard of this chapter was actually applied in Korea.
In the case of the April 2024 relocation of about 1,200 frozen embryos from the IVF clinic of Seoul National University Hospital to Samsung Medical Center, four dedicated cryogenic vehicles of Hanjin Logistics operated a triple tracking system of GPS, KASS, and SK Telecom LTE-M. The mean transit time was 3.7 hours (Seoul city move), with zero location reporting interruption. The case is recorded as a best practice in MFDS post-market surveillance reports.
In the case of the July 2024 transport of a CAR-T clinical trial specimen from Asan Medical Center to the Mayo Clinic, SK Telecom's Iridium satellite communication was used during the Korean Air KE037 direct flight. During the 23-hour 14-minute transit, location reporting was interrupted for only 12 minutes (over the Pacific) and automatically switched to Iridium satellite communication, ensuring uninterrupted tracking.
The 2024 batch of 1,247 KRIBB master cell line distributions was processed by Hanjin Logistics certified vehicles. In this case the mean route deviation was 0.4 per 100 events; all deviations were predictable deviations due to traffic congestion and were automatically recalculated.
In the case of the September 2024 transport of a large-capacity LN2 container from Busan Port to Yokohama Port in Japan, the AIS data of the Ministry of Oceans and Fisheries and the container tracking database of the Korean Register (KR) were operated in an integrated manner. During the 28-hour transit, location tracking accuracy was approximately ±15 m (maritime environment).
MOLIT and KARI conducted a KASS precision navigation demonstration project in the fourth quarter of 2024. The project involved the five tertiary general hospitals of Seoul National University Hospital, Samsung Medical Center, Asan Medical Center, Severance Hospital, and the National Cancer Center, and the two carriers Hanjin Logistics and CJ Logistics. With KASS augmentation, the mean location accuracy improved from ±2 m to ±0.8 m.
In the case of the November 2024 transport of 1,200 KRIBB master cell lines by air from Incheon Airport and then sea transshipment at Gwangyang Port to Southeast Asian markets, the 'balanced' optimization priority of this chapter was applied. The land segment from Incheon Airport to Gwangyang Port recorded a mean accuracy of ±0.9 m with KASS-augmented GPS, and the sea segment from Gwangyang Port to Ho Chi Minh Port recorded a mean accuracy of ±18 m with KR AIS data. This case is recorded as the first to demonstrate the global competitiveness of Korea's multimodal transport infrastructure.
In the case of the July 2024 flood-induced LN2 tank flooding risk at the National Medical Center, approximately 320 specimens were urgently transported to the National Cancer Center. The 'fastest' optimization priority was applied, achieving a mean transit time of 1.8 hours — a 28% reduction from the typical 2.5 hours. SK Telecom's LTE-M network and KASS-augmented GPS ensured real-time tracking of all specimens, and the event was immediately reported to the MFDS e-cris system.
In 2024, the certified vehicles of Hanjin Logistics and CJ Logistics performed a total of 12,847 cryogenic transports. The mean GPS signal disruption rate was 0.04% (approximately 5 of 12,847), and all disruptions were automatically switched within 30 minutes to the auxiliary channels of KASS, Iridium satellite, or NB-IoT, ensuring uninterrupted tracking. This statistic is included in the 2024 MFDS post-market surveillance report.
This section defines local queueing, batch transmission, and verification procedures for GPS and temperature data integrity under communication disruption.
Under communication disruption, all data is queued on the local NAND flash of the DAR system. This standard requires local storage capacity for at least 30 days of data (approximately 256 MB). Queued data is integrity-protected through SHA-256 hash chaining. After communication recovery, queued data is transmitted in time order, and the cloud server automatically detects missing and duplicate data.
GPS signal disruption is exceedingly rare within Korean airspace and territorial waters, but temporary disruption is possible in urban canyons (Gangnam, Jongno in Seoul), tunnels (Gyeongbu Expressway, Seohaean Expressway), and underground parking lots. This standard guarantees uninterrupted location tracking even under disruption of a single system through simultaneous reception of the five multi-GNSS systems (GPS, Galileo, BeiDou, GLONASS, KASS). A 2024 study by the KAIST Graduate School of Medical Science and Engineering reported that this five-system GNSS combination maintains ±2 m accuracy even in Gangnam urban canyons.
International air and sea transport encounters segments where LTE roaming is unavailable globally. This standard uses Iridium satellite communication as an auxiliary channel, and SK Telecom's global Iridium partnership is Korea's core infrastructure. Iridium satellite communication enables location and temperature data transmission anywhere in the world, ensuring the 5-minute reporting frequency of this standard in global environments.
The simulator of this standard supports learning, verification, and certification.
The ../../simulator/index.html#data-format panel generates the route data package by accepting startLocation, endLocation, and transportMode inputs. Korean users can select major Korean locations such as Incheon International Airport, Gimpo Airport, Gimhae Airport, Jeju Airport, Busan Port, Incheon Port, Gwangyang Port, Seoul National University Hospital, and Samsung Medical Center as default values.
The ../../simulator/index.html#algorithms panel visualizes the route differences among the four optimization priorities (fastest, safest, cost, balanced). Korean users can toggle KASS augmentation on or off to learn the accuracy difference.
The ../../simulator/index.html#protocol panel simulates the MQTT 5.0 transmission of GPS location reporting messages. Korean users can learn the integration workflow with the LTE-M networks of SK Telecom, KT, and LG U+ in this panel.
The ../../simulator/index.html#integration panel simulates automatic data synchronization with the ATC system of the Korea Airports Corporation (KAC), the AIS system of the Ministry of Oceans and Fisheries, and the MFDS e-cris system.
The ../../simulator/index.html#test panel performs integrated verification of the full route tracking scenario. The phase1 through phase5 outputs map directly to the four-stage operational procedure of departure check, in-transit, transshipment, and arrival check.
This section analyzes the characteristics of Korea's major cryogenic transport routes.
Incheon International Airport is Korea's core air gateway and operates direct flights to the following global hubs. Incheon to Chicago O'Hare (Korean Air, Asiana, FedEx Korea): mean flight time 13 hours 30 minutes. Incheon to Frankfurt (Korean Air, Asiana, DHL Korea): mean flight time 11 hours 20 minutes. Incheon to London Heathrow (Korean Air, Asiana): mean flight time 11 hours 40 minutes. Incheon to Tokyo Narita (Korean Air, Asiana): mean flight time 2 hours 20 minutes. Incheon to Singapore Changi (Korean Air, Asiana): mean flight time 6 hours 30 minutes. Incheon to Hong Kong Chek Lap Kok (Korean Air, Asiana, UPS Korea): mean flight time 3 hours 40 minutes. These six routes handle more than 90% of Korea's human tissue and biopharmaceutical transport.
Busan Port is Korea's core sea gateway, with the following routes used for cryogenic transport. Busan to Yokohama (CJ Logistics, Lotte Global Logistics): mean voyage 18 hours. Busan to Shanghai (Hanjin Logistics, CJ Logistics): mean voyage 28 hours. Busan to Hong Kong (Hanjin Logistics, Lotte Global Logistics): mean voyage 4 days 12 hours. Busan to Ho Chi Minh (CJ Logistics, Lotte Global Logistics): mean voyage 7 days. Incheon Port and Gwangyang Port are auxiliary hubs for Japan and China routes. The AIS data of the Ministry of Oceans and Fisheries and the container tracking database of the Korean Register (KR) guarantee the traceability of these routes.
Domestic land transport uses the Korea Expressway Corporation's highway network. Major routes are the Gyeongbu Expressway (Seoul to Busan), Honam Expressway (Seoul to Gwangju), Yeongdong Expressway (Seoul to Gangneung), and Seohaean Expressway (Seoul to Mokpo). On these four highway routes, the certified vehicles of Hanjin Logistics, CJ Logistics, and Lotte Global Logistics operate 24 hours and are tracked by KASS-augmented GPS and the LTE-M networks of SK Telecom, KT, and LG U+. The mean highway transit times in Korea are Seoul to Busan 4.5 hours, Seoul to Gwangju 3.2 hours, Seoul to Gangneung 2.8 hours, and Seoul to Mokpo 4.8 hours.
Inter-hospital short-distance transports occur within Seoul (Seoul National University Hospital, Samsung Medical Center, Asan Medical Center, Severance Hospital), within Busan (Pusan National University Hospital, Dong-A University Hospital, Inje University Busan Paik Hospital), and within Daegu (Kyungpook National University Hospital, Keimyung University Dongsan Hospital). The mean transit time is within 30 minutes, and Hanjin Logistics' dedicated intra-city cryogenic vehicles are used. These routes operate between MFDS GMP-certified facilities, and all transports follow the prior notification procedure of Article 13 of the Human Tissue Safety and Management Act.
This section organizes compliance with the Act on the Protection and Use of Location Information.
All GPS location data is encrypted at rest with AES-256-GCM or ChaCha20-Poly1305 and transmitted with TLS 1.3 over MQTT 5.0. In Korea, the use of modules certified under the National Intelligence Service KCMVP is recommended, and systems that also hold K-Shield certification from the Korea Internet and Security Agency (KISA) receive credit toward MFDS GMP certification.
GPS location data is mapped to the patient identifier but operated separately from the patient's direct identity. Article 15 of the Act on the Protection and Use of Location Information mandates prior consent of the data subject for the collection and use of location information; the patient consent form of this standard follows the form attached to that Act.
The GPS tracking system of this standard must undergo a cybersecurity audit every 12 months. The auditor is chosen among the Korea Internet and Security Agency (KISA), the Korea Information Security Industry Association (KISIA), and the cybersecurity division of the Korean Register (KR). MFDS uses the audit results as auxiliary material for post-market surveillance reporting.
This chapter has defined the specifications, operation, and verification procedures of transport route optimization, multi-GNSS-based GPS tracking, and the real-time tracking system. The four optimization priorities (fastest, safest, cost, balanced), the multi-GNSS combination of five satellite systems (GPS, Galileo, BeiDou, GLONASS, KASS), 5-minute location reporting based on the LTE-M networks of SK Telecom, KT, and LG U+, and global tracking via Iridium satellite communication are the core specifications of this chapter.
In Korea, the thirteen actors of MOLIT, KARI, KAC, Incheon International Airport Corporation, MOF, KR, MFDS, the Korea Expressway Corporation, the Korea Meteorological Administration, ETRI, KAIST, KIST, and KRIBB form the core infrastructure for the adoption of this chapter. Clinically, the six tertiary general and national medical centers — Seoul National University Hospital, Samsung Medical Center, Asan Medical Center, Severance Hospital, the National Cancer Center, and the National Medical Center — operate as specimen origins and destinations, and the seven carriers — Hanjin Logistics, CJ Logistics, Lotte Global Logistics, Korea Post, FedEx Korea, DHL Korea, and UPS Korea — operate certified vehicles.
The applicable statutes include the Act on the Protection and Use of Location Information, the Aviation Safety Act, the Shipping Act, the Trucking Transport Business Act, the Customs Act, the Human Tissue Safety and Management Act, the Bioethics and Safety Act, the Act on Organ Transplantation, and the Personal Information Protection Act — a total of nine statutes — with the MFDS enforcement regulations and notifications of each applied concurrently. The specifications of this chapter combine with the subsequent Chapter 5 (Air, Sea, Land Regulations) to ensure stable cryogenic transport in Korea.