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Measurement-based random access configuration

專(zhuān)利號(hào)
US11991548B2
公開(kāi)日期
2024-05-21
申請(qǐng)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(lèi)
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(shuō)明書(shū)

In the following description of exemplary embodiments, reference is made to the accompanying drawings which form a part hereof, and in which it is shown by way of illustration of specific embodiments in which the invention may be practiced. It is to be understood that other embodiments may be utilized and structural changes may be made without departing from the scope of the preferred embodiments of the invention.

In a wireless communication system, such as LTE and/or Universal Mobile Telecommunications System (UMTS), in some embodiments, device(s) follow the procedure described below when the device(s) initially access a network. LTE and UMTS are used as examples below, within parentheses. First, the procedure for a device to access a network (e.g., a random access) is described as a flow chart 100 of FIG. 1. Following the description of the procedure, a variety of terms used in the procedure (e.g., synchronization, measurement, and system information) are discussed in further detail. Subsequently, the random access is discussed.

Referring now to FIG. 1, the procedure 100 starts at operation 102 in which the device searches for one or more synchronization signals, e.g., in the time, frequency, code, spatial and/or other domains. In some embodiments, the one or more synchronization signals may be transmitted by one or more TP's, which will be discussed in further detail below. In LTE, for example, UEs initially search for the primary synchronization signals (PSS) and secondary synchronization signals (SSS). In some LTE UE embodiments, UE's also include cell-specific reference signals (CRS) in the set of synchronization signals. In some embodiments, the device may initially search for one or more System Signature Indices (SSI), which may be a synchronization signal.

權(quán)利要求

1
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