RU75815U1 - ACCESS MODULE - Google Patents

Abstract

The utility model relates to the field of wireless communications and is designed to operate as part of microwave equipment when organizing trunk, Zone and local communication lines. The main technical task is to expand the bandwidth of the main schedule to 179.2 Mbit / s with the simultaneous possibility of building an Ethernet data network based on TCP / IP. The access module includes a multiplexing unit, PPU interface units, a generator unit, a main channel unit, an Ethernet stream switch, and an Ethernet interface unit. The main channel block is made in the form of an interface termination for 48 E1 streams, the Ethernet interface block is made in the form of a 10 / 100BASE-T four-port termination, and the interface units with the PPU are made in the form of interface terminations and are matched with the electron-optical converters of the communication line with the PPU. 1 ill.

Description

The utility model relates to the field of wireless communications and is designed to operate as part of high-bandwidth radio-relay equipment when organizing trunk, area and local communication lines of arbitrary topology.

The known access module (RF patent No. 70433, IPC 8 H04M 1/00), which consists of a multiplexing unit, a main channel unit, interface units with transceivers (PPU), a service communication unit, an additional channel interface unit, an Ethernet interface unit , generator block and power supply.

The disadvantages of this design are the possibility of transmitting an Ethernet stream only in a point-to-point configuration and low bandwidth (18E1 or Ethernet up to 40 Mbps), since the interface unit with the control panel runs on a symmetrical cable communication line with the control panel.

The main technical objective of the proposed solution is to create a broadband access module with a transmission speed of 179.2 Mbit / s, which allows you to change the configuration and group transmission speed in operating conditions with the simultaneous ability to build an Ethernet data network based on TCP / IP.

The technical result of this proposal is to increase the payload to 179.2 Mbit / s (48 E1 streams plus an Ethernet channel of 50 Mbit / s). At the same time, software redistribution of the schedule between E1 and Ethernet streams is possible.

The main technical task is achieved by the fact that in the access module, including the multiplexing unit, the main channel unit, the auxiliary channel interface unit, the Ethernet interface unit, the generator unit and the power supply unit, according to the proposed solution, an Ethernet packet switch is introduced, and the Ethernet interface unit is made in the form

four-port termination, the main channel block is made in the form of an interface termination for 48 E1 streams, and the interface blocks with PPU are made in the form of interface terminations for working with electron-optical converters of the communication line with PPU. At the same time, the service communication node and the interface unit of the additional channel are excluded from the circuit, since these functions are transferred to the Ethernet data network and are performed by other devices (IP-phone, interface converters, etc.).

Figure 1 presents the structural diagram of the access module

The access module consists of a multiplexing unit 1, interface units with transceivers 2, 3, a main channel unit 4, a generator unit 5, an Ethernet packet switch 6, an Ethernet interface unit 7, and a power supply unit 8.

Multiplexing unit 1 performs single multiplexing / demultiplexing of the main E1 schedule using bit stuffing coming from the main channel 4 unit and Ethernet packets from the Ethernet flow switch 6. In addition, it performs the control, monitoring and signaling functions, collecting information and controlling the blocks module and transmitting information to the Ethernet network through the Ethernet switch.

The interface blocks with PPU 2, 3 carry out the formation of the interface with the electron-optical converter of the optical communication line with the PPU with a speed of 179.2 Mbit / s.

The main channel unit 4 provides the transmission of 48 E1 streams at a speed of 2048 kbit / s, in accordance with the recommendations of G.703 ITU-T.

The block of generators 5 provides the generation of clock frequencies necessary for the operation of the output nodes and devices of the access module.

The Ethernet 6 packet switch performs packet switching from the radio channel from the control system and from the four-port Ethernet 7 interface unit.

The Ethernet 7 interface unit is the four switch ports on the physical layer and is located on the front panel.

The power supply 8 provides the module blocks with the necessary voltage.

The operation of the device is as follows.

Ethernet signals through the Ethernet interface unit 7 are fed to the input of the Ethernet 6 packet switch, where packets are sorted by direction. Some packets are sent to the radio channel, some to the control system, in accordance with the IP addresses of all network elements.

From the output of the Ethernet 6 packet switch, the signal is sent to the multiplexing and control unit 1. At the same time, signals from 48 E1 streams from the main channel unit 4 are received here, where they are asynchronously multiplexed using bit stuffing. The total traffic with a speed of 179.2 Mbit / s arrives at the interface blocks with PPU 2, 3, where the interface is formed interface with the electron-optical converter of the optical communication line with the PPU.

With demultiplexing, the entire signal path is carried out in the reverse order.

The proposed solution also allows you to exclude from the circuit the service communication node and the interface unit of the additional channel, since these functions are transferred to the Ethernet data network and are performed by other devices (IP-phone, interface converters, etc.).

Claims (1)

An access module, which includes a multiplexing unit, a main channel unit, interface units with transceiver devices (PPU), a generator unit and an Ethernet interface unit, characterized in that an Ethernet packet switch is additionally introduced, and the main channel unit is designed as an interface for 48 packets E1, while the Ethernet interface unit is made in the form of a four-port termination, and the interface units with the PPU are made in the form of interface terminations and are matched with the electron-optical converters of the optical communication line with the PPU.