LTE信道提案 LTE Channel Models and simulations.doc

TSG-RAN Working Group 4 (Radio) meeting #38 R4-060334 Denver, CO, 13-17 February, 2006 Source: Ericsson, Elektrobit, Nokia, Motorola, Siemens Title: LTE Channel Models and simulations Agenda item: 7.1 Document for: Approval Introduction In a contribution on Spatial Radio Channel Models [1], SCME (SCM Extension) was proposed based on work in the WINNER project for systems beyond 3G, applicable for bandwidths up to 20?MHz. Quite similar approach based on SCM was presented in [9] by Motorola. It is also shown in a contribution from Ericsson [5] how SCME through several steps of simplifications could be used in EUTRA specifications for simulations and analysis, and to define receiver requirements in the specifications. The first use of such channel models in the RAN work will be the concept evaluations in RAN1, starting in March. Background for channel model approach and proposals Channel models for propagation will be used in the LTE RAN specification for UE and BS performance requirements, RRM requirements and also in system concept evaluations and in RF system scenarios to derive the requirements. It was shown by Ericsson in [5] that SCME can be used for these purposes, without applying the full complexity of the model. The approach in [5] gives set of multipath models with different levels of “simplification”, all based on the same SCME: (A) Full SCME model (as presented in [1]) (B) Tapped delay-line SCME model with fixed angular parameters (example in table 5 of [4]) (C) Tapped delay-line model for multiple antennas with correlation parameters derived from fixed angular parameters and an assumed antenna pattern. (D) “Simple” tapped delay-line model for a single link Ericsson presented four channel models based on simplification option (C) to this meeting in [7]. These are also shown in Annex A. Nokia presented channel models in [8] that are also based on option (C). In addition a Micro Cell System Scenario was proposed in [8], to be included in the RAN1 techn