What Are CPRI Fiber Optic Cables?
With the iterative upgrading of mobile communication networks from 2G, 3G, 4G to 5G, the overall architecture of base stations has been comprehensively revolutionized. Traditional integrated base stations have been gradually replaced by the BBU+RRU distributed remote architecture, which has become the mainstream networking solution for operators. The core carrier that supports the stable operation of this architecture and realizes efficient transmission of base station signals is CPRI fiber optic cables. As a dedicated transmission medium for FTTA (Fiber To The Antenna) networking, CPRI fiber optic cables are core components of base station fronthaul links, widely applied to mainstream communication equipment systems such as Nokia, Ericsson and Huawei. They are indispensable core supporting products for the construction, operation and maintenance upgrading of global mobile communication base stations.
1. Core Definition of CPRI Fiber Optic Cables
CPRI stands for Common Public Radio Interface, a globally unified standard for base station radio frequency interface transmission protocols. CPRI fiber optic cables are dedicated high-speed fiber transmission cables designed to comply with the CPRI protocol, used to connect BBU (Base Band Unit) and RRU/RRH/RFM (Remote Radio Unit) of base stations. They are also commonly known as base station remote fiber cables, outdoor CPRI patch cords, or FTTA field cables in the industry.
Different from ordinary indoor fiber patch cords, CPRI fiber optic cables are specially designed for the complex outdoor working conditions of base stations, featuring high-speed transmission, ultra-low latency, outdoor weather resistance, waterproof and tensile performance, as well as stable anti-interference capability. They are mainly used for the bidirectional transmission of base station radio frequency signals, control instructions and clock synchronization data, serving as key consumables to guarantee base station signal coverage, network speed and operational stability.
2. Core Application Scenarios and Networking Value
In modern distributed base stations, baseband processing equipment (BBU) is centrally deployed in computer rooms, while radio frequency transmitting equipment (RRU) is mounted on towers, building rooftops, street light poles and other outdoor locations, with a physical distance ranging from more than ten meters to hundreds of meters. CPRI fiber optic cables act as the exclusive high-speed transmission channel connecting the two, covering all base station networking scenarios:
1. Outdoor Remote Macro Base Station Networking: Signal transmission between BBUs and tower-mounted RRUs of macro base stations in urban core areas, towns and mountainous regions, adapting to long-distance and open-air complex environment networking;
2. Indoor Distributed System: Extended signal coverage for enclosed scenarios such as shopping malls, office buildings, subways and tunnels, ensuring full indoor communication coverage without blind spots;
3. Coverage Enhancement for Remote Areas: Base station construction in remote areas such as countryside, deserts and islands, adapting to harsh environments with high cable stability;
4. Old Network Renovation and Capacity Expansion: Upgrading of existing 2G/3G/4G base stations and overlay transformation of 5G networks, compatible with new and old equipment to realize smooth network iteration.
With CPRI fiber optic cables, base stations successfully avoid the drawbacks of traditional coaxial cables, including high signal loss, complicated wiring and short transmission distance. They greatly reduce base station construction costs, improve networking flexibility, and serve as the core foundation for the popularization of distributed base station architectures.
3. Core Technical Advantages (Differences from Ordinary Fiber Patch Cords)
Ordinary fiber patch cords are only suitable for short-distance jumpers between indoor computer room equipment and cannot adapt to the harsh outdoor working conditions of base stations. In contrast, dedicated CPRI fiber optic cables have five core differentiated advantages that fully meet professional communication base station standards:
1. High Speed and Low Latency for Full-Network Transmission: Complying with international CPRI protocol standards, it supports a maximum transmission rate of 9.8Gbps and multi-carrier aggregation, with fiber transmission latency lower than 1μs. It meets the real-time transmission requirements of 2G/3G/4G/5G networks without stuttering or packet loss, ensuring stable operation of voice, data and IoT services.
2. Outdoor-Grade Protection and Excellent Weather Resistance: Adopting IP55/IP67 high-level protection design, it features waterproof, dustproof, UV-resistant, salt spray-resistant and anti-aging properties, and can operate stably in extreme temperature environments ranging from -40℃ to +80℃. It resists severe outdoor conditions such as rain, strong sunlight and frost, adapting to climatic conditions worldwide.
3. High Physical Strength and Construction Durability: The cable adopts a dedicated tensile and compressive structure, featuring bending resistance, stretch resistance and rodent resistance. It supports more than 500 plug-and-pull cycles, suitable for high-altitude tower wiring and complex field construction. It is not easy to be damaged during long-term outdoor use, greatly reducing operation and maintenance frequency.
4. Dual-Mode Compatibility for Full-Range Equipment: Available in two specifications: Single-Mode (SM) and Multi-Mode (MM). Single-mode cables feature long transmission distance and low loss, serving as the mainstream choice for 4G/5G networks; multi-mode cables adapt to short-distance scenarios and legacy 2G/3G equipment, fully compatible with all series of Nokia, Ericsson and Huawei base station equipment.
5. Standardized Dedicated Connectors for Full Compatibility: Equipped with DLC duplex LC, LC-Uniboot and OD waterproof connectors, matched with Nokia NSN dedicated waterproof boots and Ericsson RPM series standard interfaces. It is plug-and-play with accurate docking and abnormal optical loss-free performance, perfectly matching the BBU/RRU interfaces of all mainstream brand base stations.
4. Main Product Classification and Brand Model Analysis
At present, mainstream CPRI fiber optic cables in the global communication market are mainly produced by three major brands: Nokia (NSN), Ericsson and Huawei, together with universal standardized cables. They fully cover the networking needs of different scenarios, lengths and equipment, and are completely compatible with mainstream industrial equipment:
4.1 Nokia/NSN Dedicated CPRI Fiber Optic Cables
Centered on FUF series part numbers, these are exclusive CPRI cables for Nokia Flexi RFM/RRH/RRU base station equipment, equipped with NSN waterproof boots. Available in single-mode, multi-mode, indoor and outdoor specifications with full length coverage from 10m to 200m. Core common models include FUFDD 473305A, FUFBA 473303A, FUFBD 473306A, FUFAU 473290A, FUFCF 473340A and FUFAJ 995732A, widely used in the construction, operation and maintenance upgrading of Nokia base stations worldwide.
4.2 Ericsson Dedicated CPRI Fiber Optic Cables
Centered on the RPM253 series, these are factory-standard outdoor CPRI field cables for Ericsson RRU equipment with mature craftsmanship and high stability, serving as mainstream procurement products for global operators. Core models include RPM253 3577, 3512, 4692 and 1610 series, as well as dedicated field cables such as ENC-RRU-SC and CBC-F2LC. The product range covers lengths from 10m to 200m, supporting DLC duplex single-mode and multi-mode transmission.
4.3 Huawei Dedicated CPRI Fiber Optic Cables
Huawei CPRI cables feature exclusive material codes, including 14130645, 14130646, 14130647 and 14130648 series DLC/UPC single-mode fiber accessories. Specially designed for Huawei distributed base stations, they feature high standardization and strong compatibility, acting as core supporting cables for Huawei base station fronthaul networking.
4.4 Universal Standardized CPRI Fiber Patch Cords
Covering full-series combined connector specifications such as DLC/ID-DLC/ID, DLC/OD-DSC/ID and DLC/OD-DLC/OD, classified into indoor (ID) and outdoor (OD) types with a standard 5.0mm cable diameter and optional single/multi-mode. These cables are compatible with universal base station equipment of all brands, cost-effective and suitable for various conventional networking scenarios.
5. Industrial Application Value and Market Prospects
With the in-depth coverage of global 5G networks and the continuous operation and maintenance upgrading of legacy 2G/3G/4G networks, CPRI fiber optic cables, as core consumables for base station fronthaul, maintain long-term and stable market demand. On the one hand, emerging markets in Southeast Asia, Africa, Latin America and other regions are vigorously promoting 4G base station construction, generating strong demand for standardized CPRI cables. On the other hand, mature markets in Europe, America and China have continuous stable demand for spare parts due to the operation, equipment replacement and capacity expansion of existing base stations.
In addition, CPRI fiber optic cables feature strong compatibility and do not require large-scale replacement with network iteration. Only aging and damaged cables need to be replaced on demand. With the industrial characteristics of high repurchase rate, stable inventory, wide adaptability and strong universality, they are core essential products in the communication foreign trade and base station operation and maintenance industries.
6. Conclusion
CPRI fiber optic cables are not ordinary fiber patch cords, but industrial-grade, outdoor-dedicated, high-speed and low-latency transmission cables tailored exclusively for mobile communication base station scenarios. As the core connection bridge between BBUs and RRUs, they undertake the stable transmission of full-network base station signals and serve as the cornerstone of ensuring the coverage quality and operational stability of mobile communication networks.
From original dedicated models of Nokia, Ericsson and Huawei to universal standardized series, full-range CPRI fiber optic cables cover the entire scenarios of new base station construction, operation, renovation and capacity expansion worldwide. With excellent outdoor weather resistance, transmission stability and equipment compatibility, they have become indispensable core products in global communication infrastructure construction with long-term stable market value and industrial demand.
Skyward Telecom specializes in the field of CPRI fiber optic cables. We supply a full range of original genuine CPRI fiber products, covering all mainstream models of Nokia, Ericsson, Huawei and other major brands. We have full-specification spot goods ranging from 10m to 200m, including complete single-mode, multi-mode and outdoor waterproof models, perfectly adapting to various base station networking equipment and construction scenarios. We also support customized services, providing CPRI fiber optic cables with customized lengths, exclusive connector combinations and personalized craftsmanship according to project requirements, fully meeting the diversified needs of global customers for new base station construction, operation and maintenance renovation, and spare parts replenishment. Relying on stable supply, strict quality control, highly compatible products and professional foreign trade services, we provide global communication partners with cost-effective, one-stop CPRI fiber optic cable procurement solutions, serving as a trustworthy partner for communication cable products.
