Invention Grant
- Patent Title: Paging mechanisms for link-budget-limited user devices
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Application No.: US16378605Application Date: 2019-04-09
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Publication No.: US10568066B2Publication Date: 2020-02-18
- Inventor: Li Su , Sami M. Almalfouh , Venkateswara Rao Manepalli , Srinivas Burugupalli , Srinivasan Nimmala , Vijay Kumar Ramamurthi , Stephan V. Schell
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Kowert Hood Munyon Rankin and Goetzel PC
- Agent Jeffrey C. Hood; Luke S. Langsjoen
- Main IPC: H04W68/00
- IPC: H04W68/00 ; H04W72/04 ; H04W76/28 ; H04W68/02 ; H04W64/00

Abstract:
Various mechanisms for paging link-budget-limited (LBL) devices are disclosed, including: (1) transmitting paging message with non-conventional paging identifier; (2) transmitting paging message(s) with increased power; (3) repeating transmission of paging message to support combining at receiver. Various mechanisms for UE device to signal LBL status are disclosed, including, transmitting status flag or special value of DRX cycle to network node as part of tracking area update and/or attach request. The network node informs a base station of the device's LBL status as part of a paging message. (The network node may, e.g., assign an S-RNTI to the LBL device from a reserved subset of S-RNTI space.) The base station invokes a paging enhancement mechanism when paging an LBL device. Alternatively, the base station may page UE devices without knowledge of LBL status, e.g., by counting paging attempts for a given UE, and boosting power after the Nth paging attempt.
Public/Granted literature
- US20190239185A1 Paging Mechanisms for Link-Budget-Limited User Devices Public/Granted day:2019-08-01
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