School of Artificial Intelligence, China University of Mining and Technology-Beijing

为满足煤矿监控、定位、视频、音频、远控、5G等不同业务对时延、可靠性、带宽等指标的不同需求，煤矿信息综合承载网应具有下列功能：① 网络切片功能，支持FlexE接口技术或信道化子接口技术，将端口带宽资源划分到不同网络切片中；不同网络切片之间的业务彼此隔离承载，互不影响。② 网络切片在线带宽扩容功能，带宽调整过程中业务不出现丢包。③ 网络切片设置掉电保护功能。④ 符合IEEE 802.3和TCP/IP协议，支持IPv6协议和IPv6业务承载，支持IPv4、IPv6业务同时承载。⑤ 支持万兆光接口、千兆光接口、10/100/1 000 Mbit/s自适应接口，核心与汇聚节点宜支持5万兆及以上光接口。⑥ 宜采用环形或双环结构。⑦ 业务质量实时监测功能，实时监测指定业务的时延、抖动和丢包率情况。⑧ 1588v2时钟同步功能，支持5G基站业务接入。煤矿信息综合承载网的主要技术指标应满足下列要求：① 光端口传输距离应≥20 km；电端口传输距离应≥100 m。② 骨干网传输速率应≥10 Gbit/s；接入网传输速率应≥1 Gbit/s。③ 不同帧长的丢包率均≤0.01%（在70%网络流量负载条件下）。④ 单节点传输时延应≤1 ms（当以太网帧帧长度为1 518 byte时）。⑤ 节点转发抖动≤100 μs。⑥ 单接口支持切片数量应≥5。⑦ FlexE接口技术最小带宽应≤1 Gbit/s；信道化子接口技术最小带宽应≤2 Mbit/s。⑧ 网络重构自愈时间应≤50 ms。⑨ 在电网停电后，承载网设备在备用电源下的连续工作时间应≥4 h。

In order to meet the different requirements of coal mine monitoring, positioning, video, audio, remote control, 5G and other services for latency, reliability, bandwidth and other indicators, the coal mine information comprehensive bearer network should have the following functions. ① The network slicing function supports FlexE interface technology or channelized sub interface technology, and divides port bandwidth resources into different network slices. The services between different network slices are isolated and carried by each other without affecting each other. ② The online bandwidth expansion function of network slicing ensures that there is no packet loss during the bandwidth adjustment process. ③ Network slices set the power-off protection function. ④ The network complies with IEEE 802.3 and TCP/IP protocols, supports IPv6 protocol and IPv6 service bearer, and supports both IPv4 and IPv6 services simultaneously. ⑤ The network supports 10GE optical interface, 1GE optical interface, 10/100/1000 Mbit/s adaptive interface. The core and aggregation nodes should support optical interfaces of 50GE or above. ⑥ It is advisable to use a circular or double ring structure. ⑦ The real time monitoring function for business quality, monitors the delay, jitter, and packet loss rate of specified services in real time. ⑧ 1588v2 clock synchronization function supports 5G base station service access. The main technical indicators of the coal mine information comprehensive bearer network should meet the following requirements. ① The optical port transmission distance should be ≥ 20 km. The transmission distance of the electrical port should be ≥ 100 meters. ② The transmission rate of the backbone network should be ≥ 10 Gbit/s. The transmission rate of the access network should be ≥ 1 Gbit/s. ③ The packet loss rate for different frame lengths is ≤ 0.01% (under 70% network traffic load conditions). ④ The single node transmission delay should be ≤ 1 ms (when the Ethernet frame length is 1518 bytes). ⑤ Node forwarding jitter should be ≤100 μs. ⑥ The number of slices supported by a single interface should be ≥ 5. ⑦ The minimum bandwidth of FlexE interface technology should be ≤1 Gbit/s. The minimum bandwidth of channelized sub interface technology should be ≤ 2 Mbit/s. ⑧ The self-healing time of network reconstruction should be ≤ 50 ms. ⑨ After a power outage in the power grid, the continuous working time of the bearer network equipment under standby power supply should be ≥ 4 hours.

国家重点研发计划项目（2016YFC0801800）。

孙继平，彭铭. 煤矿信息综合承载网标准研究制定[J]. 工矿自动化，2024，50（4）：1-8.

SUN Jiping, PENG Ming. Research and formulation of coal mine information comprehensive bearer network standards[J]. Journal of Mine Automation，2024，50（4）：1-8.