Archive for: February, 2017

Frequency Division Duplexing

Frequency–division duplexing (FDD) is a method for establishing a full-duplex communications link that uses two different radio frequencies for transmitter and receiver operation. The transmit direction and receive direction frequencies are separated by a defined frequency offset. Duplexing is the process of achieving two-way communications over a communications channel. It takes two forms: half duplex and…

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LTE band and frequency details

LTE frequency bands based in standards, and bands are growing and uses by various cellular systems . There are total 44 bands available and counting in future. There is a growing number of LTE frequency bands that are being designated as possibilities for use with LTE. Many of the LTE frequency bands are already in…

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The IMS core  network predominantly consists of the Call Session Control Function (CSCF) and the Home Subscriber Server (HSS). The Call  session control function plays an  important role in IMS. The CSCF node facilitates SIP  session setup and teardown. The HSS plays the role of a  location server in IMS,  in addition to acting as…

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Address discovery (P-CSCF) in IMS Core network

UE connects to the IMS Core NETWORK Prior to the network discovery. For UE IMS and P-CSCF are Outbound proxy .The P-CSCF is the entry point to the IMS domain and serves as the outbound proxy server for the UE. The UE attaches to the P-CSCF prior to performing IMS registrations and initiating SIP sessions.…

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