A MEMS optical switch and a switching node are disclosed. The MEMS optical switch includes N.sub.1 input ports, N.sub.1 input MEMS mirrors, M.sub.1 output ports, and M.sub.1 output MEMS mirrors, where a first input port is configured to transmit a first optical signal to a first input MEMS mirror. The first input MEMS mirror is configured to reflect the first optical signal to a first destination output MEMS mirror, where along a straight line in which a first deflection axis is located, the first input MEMS mirror is located on an edge of the N.sub.1 input MEMS mirrors, and when reflecting the received first optical signal to a first output MEMS mirror and a second output MEMS mirror, the first input MEMS mirror deflects towards an opposite direction relative to a second deflection axis.

This application provides a data reassembly method and an apparatus, to reassemble packet fragments in combination with local reassembly and cloud reassembly, so as to obtain a reassembled packet. This improves reassembly efficiency, reduces a packet reassembly delay, and reduces power consumption of an OLT. The method includes: a first OLT receives a plurality of packet fragments of a first packet that are sent by an optical network unit ONU; and if the first OLT determines that an upload condition is met, the first OLT sends the plurality of packet fragments to a cloud reassembly device, so that after receiving the plurality of packet fragments, the cloud reassembly device reassembles the plurality of packet fragments to obtain a second packet.

An electromagnetic signal transport and distribution system simultaneously transports over one single mode fiber various programming specifically requested by multiple users in multiple locations while simultaneously offering bidirectional communications with a public network.

A protection method wherein an ONU switches a reception wavelength to a backup wavelength so as to be logically connected to a backup OSU designated in advance for each ONU when the ONU detects a failure in an OSU to which the ONU is originally assigned, while the ONU keeps on holding its own connection information with the OLT. In the OLT, a backup OSU for the ONU which is originally assigned to the failed OSU is notified of the information on the ONU when the OLT detects a failure in an OSU. In this way, the ONUs which are originally assigned to the failed OSU resumes communication in a short period.

The embodiments of the present disclosure provide a bandwidth assignment method and apparatus, and a bandwidth check method and apparatus. Specifically, the bandwidth assignment method includes that: first relevant information about a bandwidth assigned to an Optical Network Unit (ONU) is obtained, wherein the first relevant information at least includes service control signaling in a bandwidth-related protocol packet; and the first relevant information is converted into first bandwidth information, and a bandwidth is assigned to the ONU according to the first bandwidth information, wherein the first bandwidth information includes: a bandwidth size corresponding to the bandwidth assigned to the ONU, a delay corresponding to the bandwidth assigned to the ONU, and a start time corresponding to the bandwidth assigned to the ONU. By means of the embodiments of the present disclosure, the problem in the related art of the difficulty of a Passive Optical Network (PON) system in meeting the transmission delay requirements required by a mobile service is solved, thereby achieving the effect of reducing the transmission delay of the PON system.

A service data transmission method, a related device, and a digital processing chip, to reduce a transmission latency of service data. The method in the embodiments includes the following steps: a first device encapsulates a channel frame in a transmission frame, where the channel frame is used to carry service data. Next, the first device sends the transmission frame to a second device. A transmission manner of the channel frame is a non-decapsulation manner between an optical transport network and an access network.

The invention relates to a switch system comprising one or more optical transceiver assemblies (14) connected to a switch ASIC (29).

An optical port routing enclosure and programmable NIC card as well as cluster topologies leveraging same are provided.

The present disclosure is a novel utility of a software defined radio (SDR) based Distributed Antenna System (DAS) that is field reconfigurable and support multi-modulation schemes (modulation-independent), multi-carriers, multi-frequency bands and multi-channels. The present disclosure enables a high degree of flexibility to manage, control, enhance, facilitate the usage and performance of a distributed wireless network such as flexible simulcast, automatic traffic load-balancing, network and radio resource optimization, network calibration, autonomous/assisted commissioning, carrier pooling, automatic frequency selection, frequency carrier placement, traffic monitoring, traffic tagging, pilot beacon, etc.

The embodiments provide a bandwidth scheduling method and an apparatus to resolve a problem in the prior art that a transmission delay is relatively large and user experience is relatively poor when a baseband unit and a radio remote unit are networked by using a passive optical network. The method includes: allocating, by a baseband unit, radio resources used for data transmission between N first radio frequency units and a terminal to the N first radio frequency units connected to the baseband unit, where N is an integer greater than 0; and then allocating, by the baseband unit based on the radio resources of the N first radio frequency units, bandwidth resources used for data transmission between the baseband unit and the N first radio frequency units to the N first radio frequency units.