Invention Grant
- Patent Title: User equipment and methods for operation in coverage enhancement mode with physical random access channel preamble
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Application No.: US15264956Application Date: 2016-09-14
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Publication No.: US09973944B2Publication Date: 2018-05-15
- Inventor: Konstantinos D. Dimou , Gang Xiong , Seunghee Han , Hong He
- Applicant: Intel Corporation , Intel IP Corporation
- Applicant Address: US CA Santa Clara US CA Santa Clara
- Assignee: Intel Corporation,Intel IP Corporation
- Current Assignee: Intel Corporation,Intel IP Corporation
- Current Assignee Address: US CA Santa Clara US CA Santa Clara
- Agency: Schwegman Lundberg & Woessner, P.A.
- Main IPC: H04J3/00
- IPC: H04J3/00 ; H04W24/02 ; H04W74/08 ; H04W24/08 ; H04W36/08

Abstract:
Embodiments of a User Equipment (UE) to operate in accordance with a physical random access channel (PRACH) are disclosed herein. The UE may comprise hardware processing circuitry to determine a coverage enhancement category for the UE based on downlink channel statistics related to reception of downlink signals at the UE from an Evolved Node-B (eNB) and an uplink-downlink imbalance parameter related to uplink reception at the eNB. The hardware processing circuitry may be further to select, for use in a coverage enhancement mode, a PRACH preamble from a set of candidate PRACH preambles based on the determined coverage enhancement category for the UE. In some embodiments, at least some of the candidate PRACH preambles may span a different number of sub-frames.
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