Ericsson Radio Systems AB PKRC1311004-1 Manual De Usuario

GPRS, Physical Link Layer

GPRS, Physical Link Layer

General Packet Radio Services (GPRS) is a packet switched service.
The service provides:

•

Efficient use of scarce radio resources

•

Fast set-up/access time

•

Efficient transport of packets in the GSM network

21.1

References

/GSM:04.04/

/GSM:04.60/

/GSM:05.02/

/GSM:05.03/

/GSM:05.10/

/GSM:05.08/

Whenever a reference is made to a function described in another chapter,
please refer to the table of contents to find the appropriate chapter.

21.2

Concepts

PCU Frame

A PCU Frame is transported on Abis
interface and contains an RLC/MAC
Block and control information.

Radio Block

A Radio Block is transported on air
interface and contains an RLC/MAC
Block and a BCS.

RLC/MAC Block

An RLC/MAC Block contains a MAC
Header and an RLC Data or an RLC/
MAC Control Block as defined in /
GSM:04.60:10/.

21.3

Functions

21.3.1

Radio Block Transmission

Purpose

Radio Block Transmission specifies the functionality for downlink
transport of RLC/MAC Block.

Preconditions and Initiation

The function is initiated by a PCU frame of type PCU-DATA-IND,
received on Abis GSL interface.

EN/LZT 720 0008

R1A

2001-06-26

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