Pulse Link is at the forefront of the next generation of networking technologies. Software-Defined Networking (SDN) is an emerging architecture that is dynamic, manageable, cost-effective, and adaptable, making it ideal for the high-bandwidth, dynamic nature of today’s applications. This architecture decouples the network control and forwarding functions enabling the network control to become directly programmable and the underlying infrastructure to be abstracted for applications and network services. The OpenFlow protocol is a foundational element for building SDN solutions.

Our key expertise in SDN includes:

  • SDN Infrastructure
    • SDN-enabled switch
  • SDN Application
    • Flow-based bandwidth management and allocation
    • Flow-based traffic status monitoring
    • SDN network management
  • SDN Network Simulation
    • OpenFlow Add-on

 

Soft Mobile Cellular Network LTE

PulseLink-ENB-001

PulseLink-ENB-001 is a LTE base station (eNodeB) implemented purely in software and running on a commodity PC. PulseLink-ENB-001 interfaces with a LTE Core Network (refer to our company’s another product: PulseLink-EPC-001) through the standard S1 interface. PulseLink-ENB-001 mainly generates a baseband signal which is sent to a radio front end (usually a USRP, to be bought separately) doing the digital to analogue conversion. The reverse is conducted for signal reception. The code is compact and highly optimized to be deployed on commodity PCs with reasonable performance and scalability support.

Major Technical features:

  • Tested bandwidths: 5, 10, 15 and 20 MHz.
  • Handle several cells in intra-band or inter-band configurations.
  • Wideband CQI/PMI reports
  • HARQ support.
  • Closed-loop UE power control.
  • Implements the MAC, RLC, PDCP and RRC layers.
  • Round-robin MAC scheduler with dynamic MCS selection.
  • Support of full and half duplex UEs.
  • LTE release 12 compliant.

 

PulseLink-EPC-001

PulseLink-EPC-001 provides a software implementation of LTE EPC (evolved packet core) with particular focus on MME (Mobility Management Entity). The MME is the key control-node for the LTE access-network. It is responsible for: idle mode UE (User Equipment) paging and tagging procedure including retransmissions; bearer activation/deactivation process; choosing the SGW for a UE at the initial attach, etc. The code is compact and highly optimized to be deployed on commodity PCs with reasonable performance and scalability support. Especially, PulseLink-EPC-001 can easily be connected to its eNodeB counterpart: PulseLink-ENB-001 to build a highly configurable LTE test network.

Major Technical features:

  • Configurable logging system for all channels with built-in text decoders.
  • Wireshark MAC-LTE capture.
  • Command line monitor.
  • Test commands to dynamically change the power level of each cell.
  • Standard S1AP and GTP-U interfaces to the Core Network.
  • X2AP interface between eNodeBs.
  • M1 interface for MBMS.

 

PulseLink-SoftLTE-001

PulseLink-SoftLTE-001 provides an integrated solution for a LTE test network as this product combines both PulseLink-ENB-001 and PulseLink-EPC-001 into one deployable package. In addition, the whole product system is also equipped with a remote radio head (RRH) as enabled by TI/Ettus’s powerful USRP X310 (10Gbps interface) with the SBX daughterboard and a couple of SIM cards that are tailored to the right setting suitable for RRH. Its software nature also makes the product suitable for constructing C-RAN – Cloud Radio Access Networks and Open 5G.

Note: the users will need to buy their own PCs to run PulseLink-SoftLTE-001 software. The requirement for the PC is as follows:

− For best performances, a quad core Intel Core i7 CPU (Nehalem or later) is recommended.

− At 2 GB of RAM.

− At least 1 GB of hard disk space.

− At least 2 Gigabit Ethernet ports.

− A 64 bit Linux distribution as the operating system