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Measurement-based random access configuration

專利號
US11991548B2
公開日期
2024-05-21
申請人
ZTE Wistron Telecom AB; ZTE (TX) INC.（SE Kista US TX Austin）
發(fā)明人
Patrick Svedman; Jan Johansson; Yonghong Gao; Aijun Cao; Thorsten Schier; Bojidar Hadjiski
IPC分類
H04W24/10; H04B7/026; H04L5/00; H04W56/00; H04W74/0833; H04W48/16
技術(shù)領(lǐng)域
random,access,rs's,in,tp,tp's,resources,rs,some,ait
地域： Kista

摘要

A method includes: receiving one or more synchronization signals; deriving a synchronization reference from the one or more synchronization signals; receiving a plurality of reference signals; based on the derived synchronization reference, performing a plurality of measurements on the plurality of reference signals; based on the plurality of measurements, selecting a plurality of random access resources; and selecting a random access resource from the plurality of random access resources for transmitting a random access signal to at least one of the one or more TP's.

說明書

  • In some embodiments of this invention, idle devices keep track of multiple measurement RSs based on a sync reference, that are often transmitted by different TPs. When the device needs to send uplink data, it performs the random access procedure according to various embodiments of this invention, e.g. based on the measurement results and random access mapping to a set of allowed random access resources. With appropriate random access mapping, e.g. based on highest RSRP, a device directs the random access towards a suitable TP or sets of TP, according to various embodiments above, without the use of traditional cells. Avoiding the use of cells provides the benefit of reduced interference and increased energy efficiency in various embodiments. Note that the various embodiments of this invention also work in systems where traditional cells are used, or in systems where traditional cells are used to a lesser extent, for example where a single cell covers a larger area served by multiple TPs, but where different such larger areas may be covered by different cells.

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