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ME60 V800R010C10SPC500 Feature Description - System Management 01

This is ME60 V800R010C10SPC500 Feature Description - System Management
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Application Scenarios for 1588 ACR

Application Scenarios for 1588 ACR

Typical Applications of 1588 ACR

On an IP RAN shown in Figure 13-3, NodeBs need to implement only frequency synchronization rather than phase synchronization; devices on an MPLS backbone network do not support 1588v2; the RNC-side device is connected to an IPCLK server; closed subscriber groups (CSGs) support 1588 ACR.

NodeB1 transmits wireless services along an E1 link to a CSG, and NodeB2 transmits wireless services along an Ethernet link to the other CSG.

Figure 13-3 Networking diagram of 1588 ACR applications on a network

On the preceding network, CSGs support 1588 ACR and function as clients to initiate requests for Layer 3 unicast connections to the upstream IPCLK server. The CSGs then exchange 1588v2 essages with the IPCLK server over the connections, achieving frequency recovery. BITS1 and BITS2 are configured as clock servers for the CSGs to provide protection.

One CSG sends line clock signals carrying frequency information to NodeB1 along an E1 link. The other CSG transmits NodeB2 frequency information either along a synchronous Ethernet link or by sending 1588v2 messages. In this manner, both NodeBs connected to the CSGs can achieve frequency synchronization.

Updated: 2019-01-04

Document ID: EDOC1100059466

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