The backhaul radio network consists of several base stations (BS), joined by a wired infrastructure. Each BS can consist of one or several sectors and the combination of their antenna patterns forms the radio network coverage area. The InfiMAN 2x2 family , InfiMAN Evolution families devices can be used as CPEs and BS sectors. Keep in mind that wireless links as well as combined infrastructure can be used to join several BSs.
A backbone link is established between the aggregation node and the network control center. The choice of specific devices for the radio link is determined by the transmitted traffic capacity (see Performance of the InfiNet Infinet Wireless devices). The following throughput values can be achieved:
- InfiLINK 2x2 family devices: up to 280 Mbps.
- InfiLINK Evolution family devices: up to 670 Mbps.
- Quanta 5 and Quanta 6 families devices: up to 650 Mbps.
- Quanta 70 family devices: up to 480 Mbps.
- InfiLINK XG family devices: up to 500 Mbps.
- InfiLINK XG 1000 family devices: up to 1000 Mbps.
- The telemetry gathering service, telephony and remote control are sensitive to delay and jitter, so they require careful configuration of traffic distribution rules by classes. A low jitter for sensitive services can be achieved by using software versions with versions with TDMA technology support on the InfiMAN 2x2 and InfiMAN Evolution devices. A comparative analysis between the Polling analysis between the Polling and TDMA multiple access technologies is provided in the TDMA and Polling: Application features document.
- The video surveillance service, in addition to the delay requirements, demands demands an increased throughput increased throughput in uplink (from the CPE to the BSthe CPE to the BS). The InfiMAN 2x2 device family supports and InfiMAN Evolution devices families support the time division multiple access method (TDMA), which allows a flexible allocation of the available allows a flexible allocation of the available throughput between the upstream and downstream channels.
- Using a single infrastructure to provide a range of different services requires flexible allocation of the available throughput.
MINT (Mesh Interconnection Network Technolohy) - InfiNetInfiNet's proprietary technology used by the InfiLINK 2x2 used by the InfiLINK 2x2, InfiMAN 2x2, InfiLINK Evolution and InfiMAN 2x2 Evolution family devices, provides data transfer between devices via wireless and wired links.
Let's look at the solution described below, that implements the MINT areas concept (see Figure 4). A radio link is installed between the Master and Slave devices, they form MINT 5 area. Each of the BS1, BS2, BS3, and BS4 sectors is potentially ready to establish a radio link with the CPE installed on the mobile object and form a separate MINT area with the corresponding identifier.
Figure 4 - Multiple MINT areas in the mobility scenario
If necessary, you can influence the path selection algorithm by setting the link metric value manually. This This can be done by summing the calculated and additional costs or by fixing a certain value (switching in InfiNet Infinet devices is described in the online course InfiLINK 2x2 and InfiMAN 2x2: Switching)
The main disadvantage of the solution above is the necessity to configure switch groups on all wireless devices. Since the switch group is a gateway between MINT and Ethernet, it is possible to combine all the BSs of the radio network into a single MINT area, transferring the gateway role to the InfiMUX switch (see Figure 5). In this case, a switch group has to be configured only on the InfiMUX. Joining devices into a single MINT area and the advantages of such a scheme are described in the InfiLINK 2x2 and InfiMAN 2x2: Switching online course.
Figure 5 - Joining the backhaul radio network into a single MINT area
One of the solutions is to combine the devices of the backbone link backbone link into a single area with all the other devices (see Figure 6). This This solution is possible is possible only when using InfiLINK 2x2 family devices for or InfiLINK Evolition families devices for the backbone link. In In this case, the unified traffic classification rules configured on the Master device will be valid in the entire MINT area. In addition, the gateway functions between MINT and Ethernet can be transferred to the Master device, while any switch can be used instead of InfiMUX.
Figure 6 - Joining all wireless devices into a single MINT area
One of the factors affecting the link parameters for a moving object is the relevance of the MINT frame redirection table. The below configuration below configuration can only be applied on the InfiLINK 2x2, InfiMAN 2x2, InfiLINK Evolution and InfiMAN 2x2 Evolution families devices. The device configuration allows to set the update interval for the MINT redirection table entries by choosing one of the three "mode" parameter values:
- Performance of the InfiNet Wireless devices.
- Link aggregation, balancing and redundancy.
- TDMA and Polling: Application features
- Dynamic Frequency Selection.
- InfiNet Infinet Wireless equipment installation, grounding and lightning protection.
- Switching configuration using InfiNet Infinet Wireless devices - typical scenarios.
- InfiNet Infinet Wireless PtMP network design with frequency reuse and SYNC.