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WF on PHR triggerer

3GPP TSG RAN WG1 #77 Seoul, Korea, 19 th – 23 rd May 2014 Agenda item 6.2.4. R1-14xxxx. WF on PHR triggerer. Broadcom, InterDigital ,…. Background. RAN2 agreement made in last meeting: Pathloss change, P-MPR change, and SCell activation triggers PHR for both MAC entities.

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WF on PHR triggerer

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  1. 3GPP TSG RAN WG1 #77 Seoul, Korea, 19th – 23rd May 2014 Agenda item 6.2.4 R1-14xxxx WF on PHR triggerer Broadcom, InterDigital,…

  2. Background • RAN2 agreement made in last meeting: • Pathlosschange, P-MPR change, and SCell activation triggers PHR for both MAC entities. • Periodic, and Reconfiguration triggers PHR to corresponding MAC entity. • PHR prohibit timer is started when a MAC entity sends PHR. • Additionally 36.321, section 5.4.6 says: • NOTE:   The UE should avoid triggering a PHR when the required power backoff due to power management decreases only temporarily (e.g. for up to a few tens of milliseconds) and it should avoid reflecting such temporary decrease in the values of PCMAX,c/PH when a PHR is triggered by other triggering conditions. • Thus, PHR of both SG are NOT transmitted periodically nor often • None of these trigger when UE becomes power limited as a result of the other eNB increasing its grant

  3. Proposal • PHR should be triggered when UE becomes power-limited due to independent scheduling decisions between MeNB and SeNB • RAN1 to define the exact condition • Send LS to RAN2 after condition is defined

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