公开(公告)号：WO2008031057A3

公开(公告)日：2008-05-08

申请号：PCT/US2007077919

申请日：2007-09-07

Applicant: QUALCOMM INC ,  LEONIDOV ALEXANDER ,  RICHARDSON THOMAS

Inventor： LEONIDOV ALEXANDER ,  RICHARDSON THOMAS

IPC: H04W48/12

CPC classification number: H04W48/12 ,  H04L5/0053

Abstract: Methods and apparatus related to efficiently communicating information, such as base station identification information and/or timing information, via beacon signals are described. Base station identification information and/or timing information is communicated via beacon signals. A beacon coding scheme is utilized in which different base station sectors in the communications system are associated with different sub-sets of beacon tones, e.g., a sub-set of 4 beacon tones. Different beacon tone sub-sets have at most 1 tone in common. A base station sector transmitter transmits a sequence of beacon signals, in accordance with a predetermined beacon tone hopping pattern, in a recurring timing structure, each beacon signal including one of the tones from its associated beacon tone subset. The structure of the beacon tone subsets and the hopping pattern facilitates efficient communication of information, efficient recovery of information being communicated and/or a simple implementation decoder by a wireless terminal.

Abstract translation: 描述了通过信标信号有效地传送诸如基站识别信息和/或定时信息的信息的方法和装置。 通过信标信号来传送基站识别信息和/或定时信息。 使用信标编码方案，其中通信系统中的不同基站扇区与信标音调的不同子集（例如，4个信标音调的子集）相关联。 不同的信标音子集最多有1个共同点。 基站扇区发射机以循环定时结构根据预定的信标音跳频模式传输信标信号序列，每个信标信号包括来自其相关信标音子集的一个音调。 信标音频子集和跳频模式的结构有助于信息的有效通信，正在通信的信息的有效恢复和/或无线终端的简单的实现解码器。

公开(公告)号：WO2007121333A2

公开(公告)日：2007-10-25

申请号：PCT/US2007066583

申请日：2007-04-13

Applicant: QUALCOMM INC ,  LEONIDOV ALEXANDER ,  JIN HUI ,  LAROIA RAJIV ,  LI JUNYI ,  SRINIVASAN MURARI

Inventor： LEONIDOV ALEXANDER ,  JIN HUI ,  LAROIA RAJIV ,  LI JUNYI ,  SRINIVASAN MURARI

IPC: H04L27/26

CPC classification number: H04L27/2608

Abstract: Improved ways of communicating assignment signals using flash signaling are described, e.g., for wireless terminals with low SNR, that are more robust against large variation of channel gains due to e.g., frequency selective fading and fast fading in time. Coding and modulation methods and apparatus that have excellent properties against symbol erasures are described. The use of flash signaling provides an improved assignment channel having strong performance on the fading channel without compromising the performance on the AWGN channel. In one exemplary embodiment, the coding and modulation method can tolerate up to 5 erased symbols out of 8 transmitted symbols. One embodiment reduces or minimizes the sector interference on the flash assignment by improving or maximizing orthogonality between different sectors. In addition, one embodiment describes improved ways of swapping flash assignment tone-symbols in the presence other high priority signals, like sector pilots and sector null pilots.

Abstract translation: 例如，对于具有低SNR的无线终端，使用闪信号进行传送分配信号的改进方式对于由于例如频率选择性衰落和时间上的快速衰落而导致的信道增益的大变化更加鲁棒。 描述了具有针对符号擦除的优异特性的编码和调制方法和装置。 闪光信令的使用提供了在衰落信道上具有强性能的改进的分配信道，而不损害AWGN信道上的性能。 在一个示例性实施例中，编码和调制方法可以容忍8个发送的符号中多达5个擦除的符号。 一个实施例通过改善或最大化不同扇区之间的正交性来减少或最小化闪存分配上的扇区干扰。 此外，一个实施例描述了在存在其他高优先级信号（如扇区导频和扇区空导频）的情况下交换闪存分配音调符号的改进方式。

公开(公告)号：WO2008031057A2

公开(公告)日：2008-03-13

申请号：PCT/US2007/077919

申请日：2007-09-07

Applicant: QUALCOMM Incorporated ,  LEONIDOV, Alexander ,  RICHARDSON, Thomas

Inventor： LEONIDOV, Alexander ,  RICHARDSON, Thomas

IPC: H04W48/12

CPC classification number: H04W48/12 ,  H04L5/0053

Abstract: Methods and apparatus related to efficiently communicating information, such as base station identification information and/or timing information, via beacon signals are described. Base station identification information and/or timing information is communicated via beacon signals. A beacon coding scheme is utilized in which different base station sectors in the communications system are associated with different sub-sets of beacon tones, e.g., a sub-set of 4 beacon tones. Different beacon tone sub-sets have at most 1 tone in common. A base station sector transmitter transmits a sequence of beacon signals, in accordance with a predetermined beacon tone hopping pattern, in a recurring timing structure, each beacon signal including one of the tones from its associated beacon tone subset. The structure of the beacon tone subsets and the hopping pattern facilitates efficient communication of information, efficient recovery of information being communicated and/or a simple implementation decoder by a wireless terminal.

Abstract translation: 描述了通过信标信号有效地传送诸如基站识别信息和/或定时信息的信息的方法和装置。 通过信标信号来传送基站识别信息和/或定时信息。 使用信标编码方案，其中通信系统中的不同基站扇区与信标音调的不同子集（例如，4个信标音调的子集）相关联。 不同的信标音子集最多有1个共同点。 基站扇区发射机以循环定时结构根据预定的信标音跳频图案传输信标信号序列，每个信标信号包括来自其相关信标音子集的一个音调。 信标音频子集和跳频模式的结构有助于信息的有效通信，正在通信的信息的有效恢复和/或无线终端的简单的实现解码器。

公开(公告)号：WO2008009003A2

公开(公告)日：2008-01-17

申请号：PCT/US2007073541

申请日：2007-07-13

Applicant: QUALCOMM INC ,  LI JUNYI ,  LEONIDOV ALEXANDER ,  PARIZHSKY VLADIMIR

Inventor： LI JUNYI ,  LEONIDOV ALEXANDER ,  PARIZHSKY VLADIMIR

IPC: H04L5/02

CPC classification number: H04L27/261 ,  H04L5/0007

Abstract: Methods and apparatus for improved beacon signaling in a wireless communication system are described. Information is encoded in the tone position of the beacon tone. The information encoded may include sector type, sector index and slope index, as well as some time index. The information is coded in the tone position so that any few of several beacons can be decoded in order to decode the information. The methods and apparatus described in the invention improve the robustness against frequency selective fading and do not require wireless terminals to establish synchronization for reliable base station detection.

Abstract translation: 描述了用于在无线通信系统中改进信标信令的方法和装置。 信息被编码在信标音的音调位置。 编码的信息可以包括扇区类型，扇区索引和斜率索引，以及一些时间索引。 信息被编码在音调位置，使得可以解码几个信标中的几个信号以便解码信息。 本发明中描述的方法和装置提高了针对频率选择性衰落的鲁棒性，并且不需要无线终端来建立用于可靠的基站检测的同步。

公开(公告)号：WO2007121333A3

公开(公告)日：2007-10-25

申请号：PCT/US2007/066583

申请日：2007-04-13

Applicant: QUALCOMM Incorporated ,  LEONIDOV, Alexander ,  JIN, Hui ,  LAROIA, Rajiv ,  LI, Junyi ,  SRINIVASAN, Murari

Inventor： LEONIDOV, Alexander ,  JIN, Hui ,  LAROIA, Rajiv ,  LI, Junyi ,  SRINIVASAN, Murari

IPC: H04L27/26

Abstract: Improved ways of communicating assignment signals using flash signaling are described, e.g., for wireless terminals with low SNR, that are more robust against large variation of channel gains due to e.g., frequency selective fading and fast fading in time. Coding and modulation methods and apparatus that have excellent properties against symbol erasures are described. The use of flash signaling provides an improved assignment channel having strong performance on the fading channel without compromising the performance on the AWGN channel. In one exemplary embodiment, the coding and modulation method can tolerate up to 5 erased symbols out of 8 transmitted symbols. One embodiment reduces or minimizes the sector interference on the flash assignment by improving or maximizing orthogonality between different sectors. In addition, one embodiment describes improved ways of swapping flash assignment tone-symbols in the presence other high priority signals, like sector pilots and sector null pilots.

公开(公告)号：WO2008009003A3

公开(公告)日：2008-01-17

申请号：PCT/US2007/073541

申请日：2007-07-13

Applicant: QUALCOMM Incorporated ,  LI, Junyi ,  LEONIDOV, Alexander ,  PARIZHSKY, Vladimir

Inventor： LI, Junyi ,  LEONIDOV, Alexander ,  PARIZHSKY, Vladimir

IPC: H04L5/02

Abstract: Methods and apparatus for beacon signaling in a wireless communication system are described. Information is encoded in the tone position of the beacon tone. The information encoded may include sector type, sector index and slope index, as well as some time index. The information is coded in the tone position so that any few of several beacons can be decoded in order to decode the information. The methods and apparatus described in the invention improve the robustness against frequency selective fading and do not require wireless terminals to establish synchronization for reliable base station detection.

公开(公告)号：WO2007121385A1

公开(公告)日：2007-10-25

申请号：PCT/US2007/066674

申请日：2007-04-14

Applicant: QUALCOMM INCORPORATED ,  PARIZHSKY, Vladimir ,  LAROIA, Rajiv ,  LEONIDOV, Alexander ,  RICHARDSON, Thomas ,  LI, Junyi ,  UPPALA, Sathyadev Venkata

Inventor： PARIZHSKY, Vladimir ,  LAROIA, Rajiv ,  LEONIDOV, Alexander ,  RICHARDSON, Thomas ,  LI, Junyi ,  UPPALA, Sathyadev Venkata

IPC: H04L27/26

CPC classification number: H04L27/2613 ,  H04L5/023 ,  H04L27/2614 ,  H04L27/2655

Abstract: A composite signal includes a high power beacon signal and low power corresponding wideband synchronization signal and is communicated over a time interval exceeding a single OFDM transmission time interval. A base station transmits one or more different such composite broadcast signals in a recurring timing structure. Each different potential beacon signal, e.g., a single tone signal, is paired with a unique wideband synchronization signal. A wideband synchronization signal includes at least some predetermined null tones and at least some predetermined non-null tones. For a given wideband synchronization signal, the predetermined null tones carry predetermined modulation symbol values. A wireless terminal receives a composite signal, identifies a beacon, determines a corresponding known wideband synchronization signal, compares received to known wideband synchronization signals, and determines at least one of a timing adjustment, frequency adjustment and channel estimation.

Abstract translation: 复合信号包括高功率信标信号和低功率对应的宽带同步信号，并且在超过单个OFDM传输时间间隔的时间间隔上传送。 基站以循环定时结构发送一个或多个不同的这种复合广播信号。 每个不同的潜在信标信号，例如单个音调信号，与唯一的宽带同步信号配对。 宽带同步信号至少包括一些预定的无效音调和至少一些预定的非空音调。 对于给定的宽带同步信号，预定的空音携带预定的调制符号值。 无线终端接收复合信号，识别信标，确定对应的已知宽带同步信号，将接收到的已知宽带同步信号进行比较，并确定定时调整，频率调整和信道估计中的至少一个。