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3GPP Release 10

3GPP release 10 driving force to further develop LTE technology towards LTE–Advanced. LTE Release 10 was to provide higher bit rates in a cost efficient way and, at the same time, completely fulfil the requirements set by ITU for IMT Advanced, also referred to as 4G. Its specifications  freeze in 2011.

The main features that LTE Release 10 introduce are

Carrier Aggregation 3GPP release 10 needs to support wider transmission bandwidths than the currently supported 20 MHz specified in Rel.8/9 while maintaining the backwards compatibility with Rel-8/9. The preferred solution to this is carrier aggregation , where multiple component carriers are aggregated to form a larger overall transmission bandwidth.The carrier aggregation suppose to consider following scenarios.

Enhanced Downlink Multiple Antenna Transmission for LTE supporting downlink SU-MIMO with up to eight layer spatial multiplexing is needed to fulfill target  for LTE-Advanced on peak rate spectral efficiency of 30 b/s/Hz.During the LTE-Advanced study, enhanced downlink MU-MIMO with UE specific reference signal was identified as critical to fulfill the IMT-Advanced requirements for average spectrum efficiency. To achieve this following features and procedure are considered

Uplink Multiple Antenna Transmission for supporting UL SU-MIMO with up to four layer spatial multiplexing is needed to fulfil requirements for LTE-Advanced on peak rate spectral efficiency of 15 b/s/Hz. During the LTE-Advanced study item, UL transmission diversity for PUCCH and codebook based transmission for PUSCH will help ensure that LTE-Advanced system deployments offer good cell edge and average performance.

3GPP release shall fulfil the following objectives in regards with uplink MIMO:

Relay for LTE have been introduced in release 10 LTE-Advanced study item. One of the prime perceived benefits of relay is to provide extended LTE coverage in targeted areas at low cost. In order to maximize the benefits for cost-effective coverage improvements, relays are standardized as part of release 10.

The overall objective of Relays is coverage-improvement with the following configurations:

For each of the above configurations, 3GPP addresses the case where the eNB-to-relay link is operating in the same carrier frequency as eNodeB-to-UE link.

A Relay shall have the following characteristics:

No UE impact expected from functionality because of relay and all legacy LTE UEs shall be served by the relay cell.

New  LTE Bands for US and ATC

Self Optimizing Networks (SON) Enhancements  in release 10  considers the feature like CCO, MRO and MLB and brief is give below.

Coverage and Capacity Optimization (CCO):The use case is to enable detection of following problems:

Mobility Robustness Optimization (MRO) enhancements to enable detection and to provide tools for possible correction of following problems:

Mobility Load Balancing (MLB) enhancements to fulfil following objectives:

Enhancements to MBMS

In Release 9 a core set of MBMS features was specified. There is a need to further evolve it in order to make the MBMS of LTE competitive. In Release 9 the network has no feedback from the MBMS UEs about the reception status of the MBMS service. A mechanism is needed to determine if there are sufficient UEs interested in receiving a service to enable the operator to decide if it is appropriate to deliver the service via MBSFN. This will allow the operator to choose between enabling or disabling MBSFN transmission for each service. Release 10 specifies following enhancements to support MBMS

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