Invention Publication
- Patent Title: RACH PROCESS FOR ANTENNA-DISTRIBUTED NETWORKS
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Application No.: US18559629Application Date: 2021-05-19
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Publication No.: US20240251448A1Publication Date: 2024-07-25
- Inventor: Jun TAN , Nitin MANGALVEDHE , Frederick VOOK , Qiping ZHU , William HILLERY
- Applicant: Nokia Technologies Oy
- Applicant Address: FI Espoo
- Assignee: Nokia Technologies Oy
- Current Assignee: Nokia Technologies Oy
- Current Assignee Address: FI Espoo
- International Application: PCT/US2021/070582 2021.05.19
- Date entered country: 2023-11-08
- Main IPC: H04W74/0833
- IPC: H04W74/0833 ; H04W52/34

Abstract:
Improved techniques of include performing random access in an antenna-distributed network include introducing a new parameter, as reduced Tx power indicator, in the RAR of Msg-2 that indicates a reduced total Tx power of all antenna nodes of the antenna-distributed network. When the gNB receives a Msg-1, the gNB determines a subset of the distributed antenna nodes to which the gNB will send the RAR in the Msg-2 with the reduced total Tx power needed to transmit the Msg-2 to only those antenna nodes in the subset. The RAR includes a new parameter indicating the reduced total Tx power used to transmit the RAR to the UE. The UE then uses the value of the new parameter to estimate a pathloss for the Msg-3 and PUSCH transmission.
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