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WF on BS MMSE-IRC receiver

China Telecom, NTT DOCOMO, Telecom Italia, ZTE, Samsung…

3GPP TSG-RAN WG4 Meeting #76 Draft R4-155168Beijing, China, 24 - 28 Aug, 2015Agenda Item: 7.6

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Background• It was agreed in the Feb RAN4#74 meeting that:

– Prioritize synchronous network, asynchronous network is not precluded.

– Prioritize PUSCH to PUSCH collision scenario.– Prioritize 1Tx UE scenario over 2Tx UE for both target PUSCH and

interference PUSCH.

• Meanwhile, in the first version of the work plan for BS MMSE-IRC WI, the following proposal was agreed:– Encourage more inputs to discuss the necessary of specifying

enhanced demodulation requirements for the following cases from RAN4 #74bis (Apr 2015):• PUSCH with 1Tx SIMO under asynchronous network• PUSCH with 2Tx MIMO• PUCCH with various formats

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WF

• Proposal 1: During phase-II of the BS MMSE-IRC WI (start from Aug 2015), in parallel to the work on requirements for synchronous network, conduct investigations on the need of requirements for asynchronous network.– Both asynchronous homogeneous and heterogeneous networks to be

analyzed.

• Proposal 2: The following will not be considered in BS MMSE-IRC WI.– PUSCH with 2Tx MIMO– PUCCH with various formats

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References

• R4-151091, Way forward on MMSE-IRC for LTE BS, ZTE, China Telecom, Huawei, Samsung, RAN4 #74, Feb 2015.

• R4-150254, Work plan on performance requirements of MMSE-IRC receiver for LTE BS, China Telecom, RAN4 #74, Feb 2015.