公开(公告)号：WO2007021764A2

公开(公告)日：2007-02-22

申请号：PCT/US2006031069

申请日：2006-08-08

Applicant: INTERDIGITAL TECH CORP ,  RUDOLF MARIAN ,  SAMMOUR MOHAMMED ,  GRANDHI SUDHEER A

Inventor： RUDOLF MARIAN ,  SAMMOUR MOHAMMED ,  GRANDHI SUDHEER A

IPC: H04L12/56 ,  H04J3/04

CPC classification number: H04L9/0833 ,  H04L63/065 ,  H04L63/123 ,  H04L2209/80 ,  H04W12/04 ,  H04W12/10 ,  H04W28/06

Abstract: A method and apparatus for securing the wireless transmission of an aggregated frame are disclosed. An aggregated frame is generated by aggregating at least one subframe and a security field. The security field is used to secure the entire aggregated frame. The contents of the security field may be generated from a group key or a pairwise key. For example, the security field may include an initialization vector (IV), an extended IV (EIV), a message integrity code (MIC) and an integrity check value (ICV). When a group key is used for a group of receivers, the group key may be changed as a new receiver enters into the group or an existing receiver leaves the group. Alternatively, the group key may be changed periodically. The subframes may be data frames, control frames, management frames, action frames or any type of frames.

Abstract translation: 公开了一种用于确保聚合帧的无线传输的方法和装置。 通过聚合至少一个子帧和安全字段来生成聚合帧。 安全域用于保护整个聚合帧。 可以从组密钥或成对密钥生成安全域的内容。 例如，安全域可以包括初始化向量（IV），扩展IV（EIV），消息完整性代码（MIC）和完整性校验值（ICV）。 当组密钥用于一组接收器时，组密钥可以随新接收器进入组或现有接收机离开组而改变。 或者，组密钥可以周期性地改变。 子帧可以是数据帧，控制帧，管理帧，动作帧或任何类型的帧。

公开(公告)号：WO2006041673A3

公开(公告)日：2007-01-25

申请号：PCT/US2005034518

申请日：2005-09-27

Applicant: INTERDIGITAL TECH CORP ,  CHANDRA ARTY ,  GRANDHI SUDHEER A ,  LEVY JOSEPH S ,  TERRY STEPHEN E ,  ZEIRA ELDAD

Inventor： GRANDHI SUDHEER A ,  LEVY JOSEPH S ,  TERRY STEPHEN E ,  ZEIRA ELDAD

IPC: H04L12/28

CPC classification number: H04L12/46 ,  H04W28/065 ,  H04W52/0216 ,  H04W74/08 ,  Y02D70/00 ,  Y02D70/142

Abstract: An aggregated medium access control (MAC) frame (300-Fig.3) for use with multiple transmission rates in a wireless communication system includes an aggregated header; at least one MAC protocol data unit (MPDU), the MPDUs being grouped together in the fram by transmission rate of the MPDU; and a separating sequence between each rate group. The aggregated header (302) includes a coun field (312) to indicate a number of rates that have been aggregated in the frame and an information group (326) for each rate that has been aggregated in the frame.

Abstract translation: 在无线通信系统中与多个传输速率一起使用的聚合介质访问控制（MAC）帧（300-图3）包括聚合报头; 至少一个MAC协议数据单元（MPDU），MPDU通过MPDU的传输速率被组合在帧中; 和每个速率组之间的分离序列。 聚合报头（302）包括用于指示已经在帧中聚合的速率的数量的域（312）和针对已在帧中聚合的每个速率的信息组（326）。

公开(公告)号：WO2008085954A3

公开(公告)日：2009-01-22

申请号：PCT/US2008000226

申请日：2008-01-07

Applicant: INTERDIGITAL TECH CORP ,  ZEIRA ELDAD M ,  REZNIK ALEXANDER ,  GRANDHI SUDHEER A ,  CAVE CHRISTOPHER R ,  MARINIER PAUL ,  DIGIROLAMO ROCCO

Inventor： ZEIRA ELDAD M ,  REZNIK ALEXANDER ,  GRANDHI SUDHEER A ,  CAVE CHRISTOPHER R ,  MARINIER PAUL ,  DIGIROLAMO ROCCO

CPC classification number: H04W74/04 ,  H04L1/0026 ,  H04L1/1671 ,  H04L1/1867 ,  H04L5/0057 ,  H04W52/04 ,  H04W52/50

Abstract: A method and apparatus for uplink transmission over a non-contentious shared feedback channel are disclosed, wherein the parameters of the uplink transmission are determined by the parameters of a downlink transmission. A new uplink channel, called a physical shared uplink feedback channel (PSUFCH) is used for uplink transmission such as feedback information in response to a downlink transmission on a fast shared data channel. The content of the feedback information may be general, e.g. an ACK/NACK or a channel quality indicator (CQI). The PSUFCH is transmitted using power ramping that terminates upon reception of a downlink ACK (DLACK) from a Node-B. No ambiguity resolution is required due to the non-contentious and deterministic mapping of the uplink channel resources.

Abstract translation: 公开了一种通过非争用共享反馈信道进行上行链路传输的方法和装置，其中上行链路传输的参数由下行链路传输的参数确定。 被称为物理共享上行链路反馈信道（PSUFCH）的新的上行链路信道用于上行链路传输，例如响应于快速共享数据信道上的下行链路传输的反馈信息。 反馈信息的内容可以是一般的，例如 ACK / NACK或信道质量指示符（CQI）。 使用在从节点B接收到下行链路ACK（DLACK）时终止的功率斜坡来发送PSUFCH。 由于上行链路信道资源的非争用和确定性映射，不需要歧义解决。

公开(公告)号：WO2008097544A3

公开(公告)日：2008-12-11

申请号：PCT/US2008001511

申请日：2008-02-04

Applicant: INTERDIGITAL TECH CORP ,  PANI DIANA ,  MILLER JAMES M ,  MARINIER PAUL ,  TERRY STEPHEN E ,  GRANDHI SUDHEER A

Inventor： PANI DIANA ,  MILLER JAMES M ,  MARINIER PAUL ,  TERRY STEPHEN E ,  GRANDHI SUDHEER A

IPC: H04L12/56

CPC classification number: H04W28/10 ,  H04L43/0882 ,  H04L43/10 ,  H04L47/10 ,  H04L47/14 ,  H04L47/225 ,  H04L47/27 ,  H04L47/365 ,  H04W74/06 ,  H04W92/12

Abstract: Enhancements are provided for the radio link control (RLC) protocol in wireless communication systems where variable RLC packet data unit (PDU) size is allowed. When flexible RLC PDU sizes are configured by upper layers, radio network controller (RNC)/Node B flow control, RLC flow control, status reporting and polling mechanisms are configured to use byte count based metrics in order to prevent possible buffer underflows in the Node B and buffer overflows in the RNC. The enhancements proposed herein for the RLC apply to both uplink and downlink communications.

Abstract translation: 在允许可变RLC分组数据单元（PDU）大小的无线通信系统中为无线电链路控制（RLC）协议提供增强。 当灵活的RLC PDU尺寸由上层配置时，无线网络控制器（RNC）/节点B流控制，RLC流控制，状态报告和轮询机制被配置为使用基于字节计数的度量，以便防止节点中的可能的缓冲器下溢 B和缓冲区溢出在RNC中。 本文中针对RLC提出的增强功能适用于上行链路和下行链路通信。

公开(公告)号：WO2005076841A3

公开(公告)日：2008-09-04

申请号：PCT/US2005002831

申请日：2005-02-02

Applicant: INTERDIGITAL TECH CORP ,  GRANDHI SUDHEER A ,  STERN-BERKOWITZ JANET

Inventor： GRANDHI SUDHEER A ,  STERN-BERKOWITZ JANET

IPC: H04L12/66 ,  H01Q1/24 ,  H01Q3/02 ,  H01Q3/22 ,  H01Q3/24 ,  H04B7/185 ,  H04J15/00 ,  H04M1/00

CPC classification number: H01Q3/24 ,  H01Q1/242 ,  H01Q1/246

Abstract: A method and apparatus for reducing transient impacts of beam switching in a switched beam antenna system are disclosed. A switch beam antenna system generates a plurality of beams in a predefined beam pattern and switches the current beam position to one of the plurality of predefined beams in accordance with measurement results for each of the beams. Quality of signals is periodically measured for each of the plurality of predefined beams, and the best beam is determined. The current beam is switched to either the best beam or an intermediate beam in accordance with the separation between the best beam and the current beam.

Abstract translation: 公开了一种用于减少切换波束天线系统中的波束切换的瞬时冲击的方法和装置。 开关波束天线系统以预定的波束图案生成多个波束，并且根据每个波束的测量结果将当前波束位置切换到多个预定波束中的一个。 对于多个预定义波束中的每一个周期性地测量信号的质量，并且确定最佳波束。 根据最佳光束和电流光束之间的分离，当前光束切换到最佳光束或中间光束。

公开(公告)号：WO2006081091A3

公开(公告)日：2007-10-25

申请号：PCT/US2006001533

申请日：2006-01-17

Applicant: INTERDIGITAL TECH CORP ,  CHANDRA ARTY ,  GRANDHI SUDHEER A ,  ZEIRA ELDAD ,  LEVY JOSEPH S ,  DEHNIE SINTAYEHU ,  SAMMOUR MOHAMMED

Inventor： CHANDRA ARTY ,  GRANDHI SUDHEER A ,  ZEIRA ELDAD ,  LEVY JOSEPH S ,  DEHNIE SINTAYEHU ,  SAMMOUR MOHAMMED

IPC: H04W74/08

CPC classification number: H04W74/08 ,  H04L47/26 ,  H04L47/30 ,  H04W74/002 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/22

Abstract: A method and system for eliminating interference caused by hidden nodes is disclosed. An initiator control message is defined for an initiator, (typically a wireless station (STA)), in order to begin an aggregate frame exchange with at least one responder. The initiator control message includes information on the queue sizes at the initiator. A responder, (typically an access point (AP)), sets up the required protection for the transmission of data by the initiator based on information on the queue sizes indicated in a field of the initiator control message using a responder control message. Other STAs that receive the responder control message set parameters for a wireless medium access accordingly. In another embodiment, multiple receiver aggregate multi-poll (MMP) and power save aggregation descriptor (PSAD) control frames are configured for transmission by a non-AP STA to provide enhanced scheduling and mitigate hidden node problems.

Abstract translation: 公开了一种消除隐藏节点干扰的方法和系统。 为启动器（通常为无线站（STA））定义发起者控制消息，以开始与至少一个响应者的聚合帧交换。 启动器控制消息包括关于发起者的队列大小的信息。 响应者（通常为接入点（AP）），基于使用响应者控制消息的发起者控制消息的字段中指示的队列大小的信息来设置由发起者发送数据所需的保护。 接收响应者控制消息的其他STA相应地为无线介质访问参数。 在另一个实施例中，多个接收机集合多轮询（MMP）和功率节省聚合描述符（PSAD）控制帧被配置为由非AP STA传输，以提供增强的调度并减轻隐藏的节点问题。

公开(公告)号：WO2007078712A3

公开(公告)日：2007-08-23

申请号：PCT/US2006047327

申请日：2006-12-12

Applicant: INTERDIGITAL TECH CORP ,  CHEN JOHN S ,  OLESEN ROBERT L ,  ZHANG GUODONG ,  SHIN SUNG-HYUK ,  LIM JUNSUNG ,  CHANDRA ARTY ,  GRANDHI SUDHEER A

Inventor： CHEN JOHN S ,  OLESEN ROBERT L ,  ZHANG GUODONG ,  SHIN SUNG-HYUK ,  LIM JUNSUNG ,  CHANDRA ARTY ,  GRANDHI SUDHEER A

IPC: H04L27/26

CPC classification number: H04L5/0007 ,  H04L1/0026 ,  H04L5/0037 ,  H04L5/0048 ,  H04L5/006 ,  H04L5/0085 ,  H04L25/022 ,  H04L25/0226 ,  H04L25/0232 ,  H04W72/08

Abstract: In an orthogonal frequency division multiple access (OFDMA) system including at least one base station and at least one wireless transmit/receive unit (WTRU), sub-carriers are allocated for data transmissions to multiple access WTRUs, where sub-carriers are allocated according to a consecutive sub-carrier allocation (CSA) type and a distributed sub-carrier allocation (DSA) type. Pilot signals with distributed pilot sub-carriers are transmitted and measured at each WTRU to obtain a channel quality metric for each pilot sub-carrier. Each WTRU sends feedback to the base station reporting channel quality based on the measured channel quality metrics. An allocation type is selected and adaptively switched according to channel variations in time and frequency domain.

Abstract translation: 在包括至少一个基站和至少一个无线发射/接收单元（WTRU）的正交频分多址（OFDMA）系统中，分配了用于向多个接入WTRU进行数据传输的子载波，其中根据 连续的子载波分配（CSA）类型和分布式子载波分配（DSA）类型。 在每个WTRU处，发射和测量具有分布式导频子载波的导频信号，以获得每个导频子载波的信道质量度量。 每个WTRU基于所测量的信道质量度量向基站报告信道质量的反馈。 根据时域和频域的频道变化选择分配类型并进行自适应切换。

公开(公告)号：WO2006020520A3

公开(公告)日：2006-07-06

申请号：PCT/US2005027956

申请日：2005-08-05

Applicant: INTERDIGITAL TECH CORP ,  GRANDHI SUDHEER A ,  CHANDRA ARTY ,  LEVY JOSEPH S ,  SHAHEEN KAMEL M ,  TERRY STEPHEN E ,  ZEIRA ELDAD

Inventor： GRANDHI SUDHEER A ,  CHANDRA ARTY ,  LEVY JOSEPH S ,  SHAHEEN KAMEL M ,  TERRY STEPHEN E ,  ZEIRA ELDAD

IPC: H04L12/28 ,  H04W74/04

CPC classification number: H04W48/10 ,  H04B7/02 ,  H04B7/0413 ,  H04B7/2612 ,  H04W72/005 ,  H04W72/0446 ,  H04W74/08 ,  H04W74/0816 ,  H04W84/12 ,  H04W88/08 ,  Y02D70/00 ,  Y02D70/1222 ,  Y02D70/142 ,  Y02D70/22 ,  Y02D70/23 ,  Y02D70/442 ,  Y02D70/449

Abstract: A method and system for controlling access to a medium in a wireless communication system. A superframe structure is defined in time domain to include a contention free period (CFP) which has at least one scheduled resource allocation (SRA) (3712), at least one management SRA (MSRA) (3718) and a contention period. An extended beacon (EB) (3746) including information about the SRA and MSRA is transmitted for. The architecture reduces station battery consumption, supports higher throughput for non-real time (NRT) traffic and is more efficient for real time (RT) traffic while maintaining full compatibility.

Abstract translation: 一种在无线通信系统中控制对介质的访问的方法和系统。 在时域中定义了超帧结构，以包括具有至少一个调度资源分配（SRA）（3712），至少一个管理SRA（MSRA）（3718）和争用周期的无竞争周期（CFP））。 发送包括关于SRA和MSRA的信息的扩展信标（EB）（3746）。 该架构降低了站电池消耗，支持非实时（NRT）流量的更高吞吐量，并且对于实时（RT）流量更有效，同时保持完全兼容性。

公开(公告)号：WO2006081123A3

公开(公告)日：2009-04-23

申请号：PCT/US2006001840

申请日：2006-01-19

Applicant: INTERDIGITAL TECH CORP ,  CHANDRA ARTY ,  LEVY JOSEPH S ,  GRANDHI SUDHEER A ,  ZEIRA ELDAD

Inventor： CHANDRA ARTY ,  LEVY JOSEPH S ,  GRANDHI SUDHEER A ,  ZEIRA ELDAD

IPC: H04W28/16 ,  H04W84/18

CPC classification number: H04W28/16 ,  H04W76/023 ,  H04W84/18

Abstract: A peer-to-peer communication system using a direct link setup (DLS) is disclosed. A mobile station (STA) establishes a direct communication link with another STA by sending a message requesting a DLS to an access point (AP), (i.e., a centralized controller). The AP may accept or reject the DLS request based on channel measurements. If the DLS request is accepted, the DLS is established such that the STAs may directly communicate with each other. An established DLS connection may be torn down by the AP sending a message including a DLS teardown request to one of the STAs, or based on channel measurements. The system may be an Ad hoc network comprising a plurality of STAs without an AP where each STA maintains a database of one-hop and two-hop STAs, and establishes a direct link to other STAs after informing neighboring STAs of an intention to establish a direct communication link.

Abstract translation: 公开了一种使用直接链路建立（DLS）的对等通信系统。 移动站（STA）通过向接入点（AP）（即集中式控制器）发送请求DLS的消息来建立与另一个STA的直接通信链路。 AP可以基于信道测量接受或拒绝DLS请求。 如果DLS请求被接受，则建立DLS使得STA可以直接相互通信。 AP可以将建立的DLS连接拆除，其中包括向一个STA发送包括DLS拆卸请求的消息，或者基于信道测量。 该系统可以是包括多个没有AP的STA的Ad hoc网络，其中每个STA维护一跳和两跳STA的数据库，并且在通知相邻STA之后建立与其他STA的直接链路，以建立 直接沟通链接

公开(公告)号：WO2008070068A9

公开(公告)日：2009-02-26

申请号：PCT/US2007024824

申请日：2007-12-04

Applicant: INTERDIGITAL TECH CORP ,  ZUNIGA JUAN CARLOS ,  GRANDHI SUDHEER A ,  SAMMOUR MOHAMMED ,  LIVET CATHERINE

Inventor： ZUNIGA JUAN CARLOS ,  GRANDHI SUDHEER A ,  SAMMOUR MOHAMMED ,  LIVET CATHERINE

IPC: H04B1/69 ,  H04L27/26

CPC classification number: H04W56/001 ,  H04B1/7183 ,  H04L5/0007 ,  H04L27/2601 ,  H04L27/2655 ,  H04W72/0406

Abstract: A method and apparatus for enabling multi-band transmission includes transmitting a beacon on a first radio band and transmitting the beacon on a second radio band. The beacon includes coordination information for transmission on the first and second radio bands.

Abstract translation: 用于启用多频带传输的方法和装置包括在第一无线电频带上发送信标并在第二无线电频带上发送信标。 信标包括用于在第一和第二无线电频带上传输的协调信息。