Cell-Site Gateway

RAD’s ACE-3220 cell-site gateway grooms GSM, UMTS, HSPA, and WiMAX traffic over a unified PSN (packet switched network) flow using diverse backhaul technologies, including ATM, ADSL2+, SHDSL.bis, and Gigabit Ethernet, as well as TDM and Ethernet microwave. Supporting operators and mobile transport providers in their migration to all-IP radio access networks (RAN), the ACE-3220 incorporates advanced pseudowire emulation (PWE) capabilities and highly accurate synchronization features, such as 1588v2, Synch Ethernet, NTR, and adaptive clock recovery (ACR) to meet 3GPP and LTE clocking requirements.

• Provides a cost-effective solution to bandwidth capacity challenges arising from mobile broadband service rollouts

• Lowers backhaul OpEx by optimizing RAN bandwidth utilization

• Simultaneously delivers 2G, 3G and Ethernet traffic to support multi-generation cell-site colocation

• Supports gradual migration to PSN networks

• Ensures service reliability and differentiated QoS through traffic classification and shaping

• Supports carrier-grade performance with alarm forwarding and flexible redundancy options

• Fully Interoperable with Cisco 76xx and Alcatel 77xx aggregation nodes and their management systems

RAD’s ACE-3220 multiservice cell-site gateway is specifically designed to accommodate the rapid expansion in cellular backhaul traffic resulting from the widespread deployment of new mobile broadband services. It simplifies service provisioning and control by enabling simultaneous delivery of GSM, UMTS, HSPA, and next-generation 3GPP/LTE traffic over the same transport network. Working opposite the ACE-340x and ACE-3600, the ACE-3220 simultaneously supports SHDSL.bis and ADSL2+ to minimize capital investment and shorten service rollout times by leveraging available DSL infrastructure to access ATM, SDH/SONET and high capacity, economical packet switched networks.

The advanced ATM shaping and scheduling capabilities of the ACE-3220 permit operators to implement overbooking strategies, enabling them to optimize network utilization, conserve existing resources and reduce the number of leased services required to support their network. The device also enables operators to converge multi-generation traffic over an all-IP RAN using IMA/UNI or standard-based CES pseudowire (PW) encapsulation, as well as Ethernet to ATM bridging according to RFC 2684. These are enhanced with various QoS schemes, including VLAN priority (802.1p), EXP or ToS/DSCP, as well as comprehensive monitoring and diagnostic capabilities, including pseudowire VCCV-BFD and ITU-I.610 ATM OAM.

 

In addition, the ACE-3220 uses PPP over Ethernet (PPPoE) protocol to allow HSDPA connectivity in a variety of DSL-based cellular backhaul applications.

The ACE-3220 is designed to provide highly accurate synchronization over packet transport and meet the key requirements for cellular backhaul, such as +/-16 ppb (parts per billion) frequency accuracy. The clock can be recovered either from the TDM links or from the DSL links, using NTR recovered clock over SHDSL or adaptive clock recovery (ACR).

The ACE-3220 features flexible management capabilities, including local management via an ASCII terminal (RS-232). In addition, remote management can be performed either inband or out-of-band, using the network or user ports. Advanced FCAPS (Fault, Configuration, Accounting, Performance, and Security) and diagnostic tools are provided by RADview-EMS, RAD’s carrier-class element management system, via an SNMP-based GUI.

 

The ACE-3220 also supports a variety of configuration access channels, including CLI over Telnet, SNMP, Web server, and TFTP. Incorporated security features include Secure Shell (SSH), Web-based Secure Socket Layer (SSL), SNMPv3, and RADIUS, as well as management access control list (ACL).