Invention Grant
- Patent Title: Random access procedure for machine type communication
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Application No.: US15755453Application Date: 2015-08-25
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Publication No.: US10383152B2Publication Date: 2019-08-13
- Inventor: Xuefeng Lai , Tong Li , Zukang Shen
- Applicant: Lenovo Innovations Limited (Hong Kong)
- Applicant Address: CN Hong Kong
- Assignee: Lenovo Innovations Limited (Hong Kong)
- Current Assignee: Lenovo Innovations Limited (Hong Kong)
- Current Assignee Address: CN Hong Kong
- Agency: Kunzler Bean & Adamson
- International Application: PCT/CN2015/087974 WO 20150825
- International Announcement: WO2017/031676 WO 20170302
- Main IPC: H04W74/08
- IPC: H04W74/08 ; H04W72/12 ; H04W72/14 ; H04W4/70

Abstract:
Apparatuses, methods, and systems are disclosed for alleviating congestion during random access of enhanced machine-type communications user equipment. One apparatus includes a radio transceiver that communicates over a mobile telecommunications network and a processor configured to: transmit a physical random access channel (PRACH) preamble on a first time-frequency resource, monitor a second time-frequency resource for a first downlink (DL) grant scheduling a random access response (RAR) corresponding to the transmitted PRACH preamble on a third time-frequency resource, receive the RAR on the third time-frequency resource, transmit a message on a fourth time-frequency resource, wherein the fourth time-frequency resource is determined based on the RAR; determine a fifth time-frequency resource based on a time-frequency resource index, wherein the RAR includes the time-frequency resource index, and monitor the fifth time-frequency resource for a second DL grant scheduling a contention resolution message.
Public/Granted literature
- US20190098667A1 RANDOM ACCESS PROCEDURE FOR MACHINE TYPE COMMUNICATION Public/Granted day:2019-03-28
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