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This section covers status and roadmaps for a collaborative project between ALU, Eurecom and INSA-Lyon related to large-scale system emulation with [OpenAirInterface](OpenAirInterface).
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## Required buidling blocks
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1. UE RRC measurements event-triggering algorithm: This is the starting point for HO implementation. The algorithm for triggering the Measurement Reports needs to be implemented.
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2. PHY Abstraction of UE RRC measurements: Above measurements to be provided in abstraction mode (this is essential for large-scale system simulations)
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3. RRC procedures for supporting measurement signaling between eNB and UE has already been implemented.
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4. Multi-cell simulations in eNB have been tested only by disabling channel models (using -S/-s options). This needs to be tested in abstraction mode with more than 2 eNBs and multiple Ues.
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5. UE detachment from cell and reattachment to new cell needs to be tested using -J option in oaisim. This is critical for HO implementation.
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6. Possibility of using a hack for the X2 interface to avoid delays in full X2 implementation were discussed. This needs to be discussed in detail in future.
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7. A scenario needs to be fixed for the simulation which will allow performance analysis of ALU's ICIC algorithm (URGENT)
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8. There is no link between topology model and channel model, currently in oaisim there is a hexagonal topology by default and this needs to support other topologies (eg: cellular). The channel models also need to support the topology.
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9. Scheduling periodic PUSCH allocations for UEs in order to get sub-band UE feedback requires a change (hack?) in the eNB scheduler.
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10. Changes in MAC/PHY at the UE (and eNB?) to support attachment to new cell during HO needs to be done.
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Return to [OpenAirRoadmaps](OpenAirRoadmaps)
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-- User.RaymondKnopp - 02 Dec 2010 |