The 3GPP RAN group has started working on the evolution of LTE in 3GPP Release 14, targeting completion by June 2017. This release targeting improvement and new features for LTE-Advanced Pro.
As short List of the new feature is given below
Improvement to LTE efficiency
– Downlink Multi user Superposition Transmission
– Enhancements on FD-MIMO
– Uplink Capacity Enhancements
– Enhancements to CoMP operation
– Enhancement of VoLTE
– L2 latency reduction techniques
– Mobility enhancement in LTE
– HSPA and LTE Joint Operation
– Context-Aware Service Delivery
– Flexible eNB-ID and Cell-ID in E-UTRAN
Offload to Unlicensed
– Enhanced Licensed-Assisted Access (LAA)
– Enhanced LTE-WLAN Aggregation
Enablers of New Services
– Support for V2X services based on LTE
– eMBMS enhancements
– Further Enhancements to LTE D2D, UE to Network Relays for IoT and Wearables
– Indoor Positioning enhancements
RF and Performance Requirements
– Performance enhancements for high speed
– Multi-Band BS testing with three or more bands
– Further Enhancement of BS RF and EMC requirements for Active Antenna System (AAS)
– Measurement Gap Enhancement for LTE
– Radiated performance requirements for the verification of multi-antenna reception of UEs
– LTE bandwidth flexibility enhancements
Short detail about these features is given below
Enhanced LAA (eLAA) – Feature extends LAA scheme with UL consideration to enable full DC-like capabilities for unlicensed spectrum.
Enhanced LWA (eLWA) – As LWA standardized within Release-13, considered DL-only operation, an enhanced LWA is proposed within Release -14 to overcome this limitation. The new features in this enhancement include the addition of UL transmission via WLAN, support for 60GHz frequency, PDCP optimizations for increased data rates, and SON-related features for WLANs under eNB coverage.
Vehicular-to-Vehicular (V2V) – This feature aims to specify RAN support for Vehicle to Vehicle operation integrated with air interface within or without network coverage using side link includes PHY layer structure, RRM requirements, and L2/L3 protocol operation.
Control Plane and User Plane latency enhancements – Shortening TTI down to a single OFDMA symbol and more resource efficient UL scheduling timing are some examples of the proposed improvements targeting latency reduction.
Light Connection – discussion on a new intermediate RRC state for keeping UE context alive during short active/inactive transitions (applicable for massive MTC use case with small data transmission);
Multi-connectivity – This feature is expected to enhance DC, by providing multiple links for a UE in two options. The first option considers the configuration of multiple radio links per UE, where only limited, selected set of radio links is active at any given moment. Alternatively, all of the configured multiple radio links can be active.