5G REF speed in the sub-GHz 6 may be slightly higher than 4G with a corresponding amount of spectrum and antennas.Adding (LAA licensed Assisted Access) to a 4G configuration can add several hundred megabits per second rate.
Until there is a significant field testing, accelerates the 5G only be estimated. Qualcomm, the leading chipmaker unveiled at Mobile World Congress a model that has been cited by many.    The simulation predicts 490 Mbit / s median rates for a typical configuration of the 3.5 GHz 5G Massive MIMO. It predicts a 1.4 Gb / s media for a configuration using the 28 GHz millimeter waves. 
Some 3GPP 5G networks will be slower than some advanced 4G network. T-Mobile’s LTE / LAA network is deployed, and serves customers in more than 500 megabits per second in Manhattan.  5G specification also allows the LAA, but it has not yet discovered.
To begin with the period defined by the standard ITU IMT-2020, which called for a theoretical maximum downlink capacity of 20 gigabits. More recently, the group of industry standards including 3GPP systems with NO (New Radio) software. 3GPP standard does not require any specific level of performance.
ITU shared 5G network services in three categories: enhanced mobile broadband (eMBB) or mobile telephone; Ultra-Reliable low latency communication (URLLC) containing industrial and autonomous vehicles; and massive computer type Communications (MMTC) or sensors. 5G Initial deployments will focus on eMBB and fixed wireless, which uses many of the same characteristics as eMBB. 5G will utilize spectrum in the existing LTE band (600 MHz to 6 GHz), and also in the millimeter wave band (24-86 GHz). 5G technologies must meet the ITU IMT-2020 requirements and / or 3GPP Release 15; while IMT 2020 specifies data rates of 20 Gb / s, 5G speed in the sub-6GHz equal to 4G.
IEEE comprises several areas of 5G with a core focus by cable sections between the remote radio head (RRH) and baseband unit (BBU). Standard 1914.1 focuses on network architecture, and divides the connection between the RRU and the BBU into two main sections. Radio Unit (RU) to the distributor Unit (DU) is NGFI-In (Next Generation fronthaul Interface) and to the central unit (CU) is the interface NGFI-II so that a more versatile and cost-effective network. NGFI-I and NGFI-II has established measurements to be matched to ensure different types of services defined by the ITU can be supported. 1914.3 standard is to create a new Ethernet frame format that can carry IQ data in a much more efficient manner, depending on the functional division is used, this is based on the 3GPP definition of functional parts. Multiple network synchronization standards in the IEEE groups updated to ensure network timing accuracy at RU is kept at a level necessary for the traffic passing over it.