Optimized Mechanism for Paging Transmission and Reception

摘要

Methods and apparatus are provided for paging transmission and reception for UEs requiring coverage extension/coverage enhancement. In one novel aspect, the UE reports the CE status to the MME. CE level related information and the corresponding cell ID are provided from eNB to MME. MME sends paging information including the repetition number to all eNBs in the corresponding tracking area when paging the UE. In another novel aspect, a paging area is used for CE UEs. The UE receives paging area information, notifies the network, and updates the stored paging area information upon detecting changes between the received and the stored paging areas. In another embodiment, the UE reports its CE status upon detecting CE status changes. The eNB stores UE CE information and forwards it to neighboring eNBs in the same paging area. The eNB pages UEs on its CE UE list with repetition while paging other UEs normally.

主权项

1. A method comprising:
receiving information of a paging area by a user equipment (UE) requiring a coverage extension/coverage enhancement (CE) from a base station in a wireless network, wherein the paging area is a subset of a tracking area; determining if there is any change between the received paging area and a stored paging area of the UE; notifying the base station if there is any paging area change; and receiving paging messages in the paging area, wherein the paging messages are transmitted repeatedly by a repetition number.