1. TSG RAN WG4 meeting #58AH R4-112352
Shanghai, China, April 11-15, 2011
Source: Qualcomm Incorporated
Title: Agreements in eICIC in RAN4 #58AH
Agenda Item: 5.8
Document for: Approval

2. System Simulation Side Conditions
Continue discussions on Es/Iot definition in system level simulations and results alignment
Further study the impact of the changed RSSI definition
Agreements
Specify CRS RE Iot for the eICIC test cases and requirements
Specify CRS RE Io in for the eICIC requirements

3. RLM Agreement on DRX evaluation period:
If extension of evaluation period is needed the following approach from R is an option to be considered:
Extending times of period for all the DRX cycle length based on current specifications.
Further discussion on the need of extension of evaluation period for DRX will be in the May meeting.
Agreement on introducing RLM eICIC core requirements based on revised CR of R
Agreed on proposed change: “If higher layer signalling indicates…”
Agree not to include side condition in the core requirements if the side condition agreed in the previous meeting is captured in the test cases.
[For RLM tests, CFI is tentatively set to 3]

4. RSRP/RSRQ Accuracy (I)
Agreement on measurement period based on proposal in R
When eICIC is used by a UE, the UE is [TBD] extend its L1 measurement period to 400ms for the case of no DRX, or DRX cycle <=40ms,
where TBD is one of the options below:
1) required to
2) allowed to
3) required to not
One of the options is expected to be decided in the May meeting.
Agreement on introducing RRM eICIC core requirements based on revised CR of R
Agreed on introducing [-4] dB CRS Es/Iot target cell side condition for absolute RSRP accuracy requirements (a few other values TBD)
Agree not to include the interfering cell side condition in the core requirements if the side condition agreed in the previous meeting is captured in the test cases.
If both cells can be measured at the same time, then current relative accuracy applies; other scenarios are for further discussion

5. RSRP/RSRQ Accuracy (II)
Open issues:
Measurement period with DRX
Are any restrictions for relative accuracy requirements required for the configuration of patterns 1 (serving) and 2 (neighbors)? Decide whether the LS to RAN2 is necessary

6. Cell Identification Agreed way forward: Open issues
Base line core cell identification requirements should be based on frame aligned case, but not exclude non-frame aligned case for studying.
Open issues
Further alignment of results and clarification of assumptions.
Performance with DRX

7. CSI and Demod (I)
Proposal 1: TM 1 (single antenna port) should be used and additionally TM 3 should be used. The inclusion of rank 2 transmission will be checked until May.
Proposal 2: Baseline is non-colliding RS with non-MBSFN ABS configuration.
For MBSFN ABS configuration, colliding RS should also be defined.
For non-MBSFN ABS configuration, colliding RS case will be discussed in May.
Proposal 3: Initial requirements should be defined for UE categories [1] – 5 for 10 MHz. Other channel bandwidths are FFS.

8. CSI and Demod (II)
Proposal 4: The demodulation performance should be verified for PDSCH and PDCCH/PHICH with (CFI=2 and/or 3)
 Proposal 5: SNR setting for the single interfering cell
Should reflect typical scenarios;
Limitation on the offset between the serving cell SNR and interfering cell SNR should be taken into account.

9. CSI and Demod (III)
Proposal 6: Following patterns should be defined for requirement definition:
UE configured patterns: Pattern for RLM/RRM (P_R), Pattern 1 for CSI (P_CSI1), Pattern 2 for CSI (P_CSI2),
eNB side patterns: Pattern for actual interference (P_Int), Pattern for scheduling (P_S).
May meeting should discuss the initial set of patterns to be used for simulation campaign.