公开(公告)号：EP1475899A1

公开(公告)日：2004-11-10

申请号：EP03425291.6

申请日：2003-05-07

Applicant: STMicroelectronics S.r.l.

Inventor： Rimi, Francesco ,  Pappalardo, Francesco ,  Avellone, Giuseppe ,  Galluzzo, Agostino

IPC: H04B1/707

CPC classification number: H04B1/70735 ,  H04B1/7083 ,  H04B2201/70702 ,  H04B2201/70707

Abstract: In order to execute the cell-search procedure in a cellular communication system (such as a system based upon the 3GPP TDD standard), there are available identification codes for the second step (slot synchronization) and for the third step (identification of the scrambling codes). Said identification codes are identified by means of a process of correlation with the received signal and are used for obtaining from a correspondence table the parameters for the execution of the second step (CD) or of the third step (SCR). The correspondence table is stored in a reduced form by means of the identification, according to rules of symmetry and redundancy, of subtables designed to generate the entire table by means of appropriate combination operations.
The search procedure in the correspondence table thus reduced is conveniently modified by means of the introduction of said combination operations.
A preferential application is in mobile communication systems based upon standards, such as UMTS, CDMA2000, IS95 or WBCDMA.

Abstract translation: 为了在蜂窝通信系统（例如基于3GPP TDD标准的系统）中执行小区搜索过程，存在用于第二步骤（时隙同步）的可用识别码，并且对于第三步骤（识别加扰 码）。 所述识别码通过与接收信号相关的过程来识别，并且用于从对应表获得用于执行第二步骤（CD）或第三步骤（SCR）的参数。 通过借助于通过适当的组合操作生成整个表的子表的对称和冗余规则的标识，缩减形式存储对应表。 通过引入所述组合操作，可以方便地修改由此减少的对应表中的搜索过程。 基于诸如UMTS，CDMA2000，IS95或WBCDMA的标准的移动通信系统中的优先应用是优选的。

公开(公告)号：EP1429467A1

公开(公告)日：2004-06-16

申请号：EP03020851.6

申请日：2003-09-15

Applicant: STMicroelectronics S.r.l.

Inventor： Avellone, Giuseppe ,  Rimi, Francesco ,  Pappalardo, Francesco ,  Galluzzo, Agostino ,  Visalli, Giuseppe

IPC: H04B1/707

CPC classification number: H04B1/70735 ,  H04B1/7083

Abstract: Once slot synchronization has been obtained in a first step, during a second step there is acquired, by means of correlation (111, 117) of the received signal (r) with the synchronization codes, the information corresponding to the codegroup and to the fine slot synchronization. The synchronization codes are split into codesets. In a first step, a synchronization code identifying a corresponding codeset (CS) is identified by means of correlation (111) and search for the maximum value of correlation energy (114). In a second step, the received signal (r) is correlated (117) with the remaining codes (113) belonging to the codeset identified. The information thus obtained, which corresponds to all the synchronization codes comprised in the codeset identified, is used (115) for obtaining frame synchronization and codegroup identification. Preferential application is in mobile communication systems based upon standards, such as UMTS, CDMA2000, IS95 or WBCDMA.

Abstract translation: 一旦时隙同步已经在第一步骤中获得，在第二步骤期间出现被获取时，由所接收的信号（R）与所述同步码的相关性（111，117）的装置，所述信息对应于所述代码组和对细 时隙同步。 同步码被分成代码集。 在第一步骤中，一个同步码识别相应的代码组（CS）被识别BY相关（111）的方式，并搜索相关能量（114）的最大值。 在第二步骤中，接收到的信号（r）被相关（117）与属于所标识的代码组的剩余的代码（113）。 这样获得的信息，其对应于所标识的代码集包括的所有同步码，则使用（115），用于获得帧同步和码组识别。 优先应用是在基于标准的，：诸如UMTS，CDMA2000，IS95或WBCDMA码的移动通信系统。