Invention Grant
- Patent Title: Simple rach (SRACH)
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Application No.: US15502382Application Date: 2014-08-18
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Publication No.: US10244562B2Publication Date: 2019-03-26
- Inventor: Neil McGowan , Marthinus Willem Da Silveira
- Applicant: Telefonaktiebolaget LM Ericsson (publ)
- Applicant Address: SE Stockholm
- Assignee: Telefonaktiebolaget LM Ericsson (publ)
- Current Assignee: Telefonaktiebolaget LM Ericsson (publ)
- Current Assignee Address: SE Stockholm
- Agency: Withrow & Terranova, PLLC
- International Application: PCT/IB2014/063958 WO 20140818
- International Announcement: WO2016/027125 WO 20160225
- Main IPC: H04W74/08
- IPC: H04W74/08 ; H04L5/00

Abstract:
Systems and methods for providing random access in a cellular communications network are disclosed. In general, the cellular communications network is an Orthogonal Frequency Division Modulation (OFDM) based cellular communications network (e.g., a 3 GPP LTE cellular communications network) or similar multi-subcarrier based cellular communications network. Random access is performed using a Physical Random Access Channel (PRACH) including subcarriers having a subcarrier frequency spacing that is equal to a subcarrier frequency spacing in one or more other channels of the uplink (e.g., a Physical Uplink Shared Channel (PUSCH)). As a result, the subcarriers in the PRACH are orthogonal to the subcarriers in the other channel(s) of the uplink, which in turn reduces, or substantially eliminates, interference between the PRACH subcarriers and the subcarriers of the other channel(s) of the uplink.
Public/Granted literature
- US20170238344A1 SIMPLE RACH (SRACH) Public/Granted day:2017-08-17
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