公开(公告)号：US20140135001A1

公开(公告)日：2014-05-15

申请号：US14159390

申请日：2014-01-20

Applicant: QUALCOMM Incorporated

Inventor： Durga Prasad MALLADI ,  Byoung-Hoon KIM ,  Tao LUO

IPC: H04W48/16

CPC classification number: H04W48/16 ,  H04J11/0069 ,  H04L27/2613 ,  H04L27/2655 ,  H04L27/2675

Abstract: Systems and methodologies are described that facilitate searches for a cell in a wireless communication environment. A mobile device can employ a searcher that can detect timing information respectively associated with PSCs and cells to determine the cell with the highest correlation. The searcher can detect SSCs, which can include detecting associated phase information, to determine the SSC with the highest correlation, CP length, and/or other information to facilitate identifying a desired cell having the strongest signal to establish communication between the mobile device and the desired cell. PSCs respectively associated with cells can have different positions in the symbol sequences, and SSCs can respectively be phase shifted at different angles to facilitate detection and identification of a cell(s), where a PSC can be utilized as a phase reference by the associated SSC.

Abstract translation: 描述了便于在无线通信环境中搜索小区的系统和方法。 移动设备可以使用搜索器，其可以检测分别与PSC和小区相关联的定时信息，以确定具有最高相关性的小区。 搜索器可以检测SSC，其可以包括检测相关联的相位信息，以确定具有最高相关性，CP长度和/或其他信息的SSC，以便于识别具有最强信号的期望小区，以建立移动设备与 想要的细胞。 分别与单元相关联的PSC可以在符号序列中具有不同的位置，并且SSC可以分别以不同的角度相移以促进单元的检测和识别，其中PSC可以被相关联的SSC用作相位参考 。

公开(公告)号：US20130279448A1

公开(公告)日：2013-10-24

申请号：US13920000

申请日：2013-06-17

Applicant: QUALCOMM Incorporated

Inventor： Byoung-Hoon KIM ,  Durga Prasad MALLADI

IPC: H04W56/00

CPC classification number: H04W56/00

Abstract: To support cell search, multiple (e.g., two) synchronization transmissions are sent in a frame with non-uniform spacing. Information is conveyed via the non-equal distances between consecutive synchronization transmissions. Multiple levels of non-uniform spacing may be used to convey different types of information. In one design, the multiple synchronization transmissions are sent in different subframes of a frame, and each synchronization transmission is sent in one of multiple symbol periods in a respective subframe. The synchronization transmissions may be sent in non-evenly spaced subframes to convey frame boundary. One synchronization transmission may be sent in one of multiple possible symbol periods depending on the information, e.g., a particular group of cell IDs, being conveyed. The distances between synchronization transmissions may also be used to convey cyclic prefix length. A secondary synchronization transmission carrying a cell ID may be sent at a predetermined offset from one of the multiple synchronization transmissions.

Abstract translation: 为了支持小区搜索，在具有不均匀间隔的帧中发送多个（例如，两个）同步传输。 通过连续的同步传输之间的不相等的距离来传送信息。 可以使用多个级别的不均匀间距来传达不同类型的信息。 在一种设计中，多个同步传输在帧的不同子帧中发送，并且每个同步传输在相应子帧中的多个符号周期之一中发送。 可以以非均匀间隔的子帧发送同步传输以传送帧边界。 可以根据正在传送的信息（例如，特定的小区ID组）以多个可能的符号周期之一发送一个同步传输。 同步传输之间的距离也可用于传送循环前缀长度。 可以以多个同步传输之一的预定偏移量发送携带小区ID的辅同步传输。