专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

31. 发明申请

WO2008157770A3 SIGNALING IN A WIRELESS COMMUNICATION SYSTEM 审中-公开
公开(公告)号：WO2008157770A3
公开(公告)日：2008-12-24
申请号：PCT/US2008/067694
申请日：2008-06-20
申请人： INTERDIGITAL TECHNOLOGY CORPORATION , AGHILI, Behrouz , DICK, Stephen, G. , CHITRAPU, Prabhakar, R. , RUDOLF, Marian
发明人： AGHILI, Behrouz , DICK, Stephen, G. , CHITRAPU, Prabhakar, R. , RUDOLF, Marian
IPC分类号： H04L1/00
摘要： A method of operating a wireless transmit receive unit (WTRU) and a WTRU configured to receive a radio link control (RLC)/ a medium access control (MAC) header. The header is coded for reduced transmission time interval (RTTI) operation. The header includes a 16-bit cyclic redundancy check (CRC) of an RLC/MAC payload associated with the RLC/MAC header.

32. 发明申请

WO2008121366A2 POWER CONTROL IN ORTHOGONAL SUB-CHANNELS IN WIRELESS COMMUNICATIONS 审中-公开
标题翻译：无线通信中正交子信道的功率控制
公开(公告)号：WO2008121366A2
公开(公告)日：2008-10-09
申请号：PCT/US2008/004135
申请日：2008-03-28
申请人： INTERDIGITAL TECHNOLOGY CORPORATION , CHITRAPU, Prabhakar, R. , AGHILI, Behrouz , DICK, Stephen, G.
发明人： CHITRAPU, Prabhakar, R. , AGHILI, Behrouz , DICK, Stephen, G.
IPC分类号： H04B7/005
CPC分类号： H04W52/243 , H04B7/0452 , H04B7/0697 , H04W52/04 , H04W52/143 , H04W52/245 , H04W52/262 , H04W52/42 , H04W72/0446 , H04W76/10 , H04W88/08
摘要： A method and apparatus for power control in a wireless communication involves establishing at least two orthogonal sub-channels within a channel for communication and controlling transmitted power in each sub-channel independently.
摘要翻译：一种用于无线通信中的功率控制的方法和装置，包括：建立信道内的至少两个正交子信道，用于通信，并独立控制每个子信道的发射功率。

33. 发明申请

WO2008002446A2 APPARATUS AND METHODS FOR IMPLEMENTING HIERARCHICAL MODULATION AND DEMODULATION FOR GERAN EVOLUTION 审中-公开
标题翻译：用于实施GERAN演变的分层调制和解调的装置和方法
公开(公告)号：WO2008002446A2
公开(公告)日：2008-01-03
申请号：PCT/US2007/014443
申请日：2007-06-21
申请人： INTERDIGITAL TECHNOLOGY CORPORATION , CHITRAPU, Prabhakar, R. , RUSSELL, Paul, L., Jr.
发明人： CHITRAPU, Prabhakar, R. , RUSSELL, Paul, L., Jr.
IPC分类号： H04L27/18 , H04L27/34
CPC分类号： H04L27/3488 , H04L27/183 , H04L2001/0098
摘要： The present invention relates to hierarchical modulation (HM) and demodulation for global system for mobile communications (GSM)/enhanced data rates for GSM evolution (EDGE) radio access network (GERAN) evolution. In one embodiment, HM symbols are generated by generating primary modulated symbols based on a first bit group, generating secondary modulated symbols based on a second bit group, and combining the primary modulated symbols and the secondary modulated symbols. In another embodiment, the HM symbols are demodulated. In yet another embodiment, a received GERAN signal is converted to baseband complex symbol values, which are processed to produce training symbols and data symbols that carry pilot symbols. Channel parameters of the radio channel are estimated based on the training symbols. An equalized signal is generated based on the estimated channel parameters and data symbol. Primary and secondary demodulated symbols are generated based on the equalized signal.
摘要翻译：本发明涉及用于GSM演进（EDGE）无线电接入网（GERAN）演进的全球移动通信系统（GSM）/增强数据速率的分级调制（HM）和解调。在一个实施例中，通过基于第一位组生成主调制符号，基于第二位组生成二次调制符号，以及组合初次调制符号和次调制符号来生成HM符号。在另一个实施例中，HM符号被解调。在另一个实施例中，接收的GERAN信号被转换为基带复合符号值，其被处理以产生携带导频符号的训练符号和数据符号。基于训练符号来估计无线信道的信道参数。基于估计的信道参数和数据符号生成均衡信号。基于均衡信号生成主和次解调符号。

34. 发明申请

WO2006096316A3 USING WATERMARKING TO REDUCE COMMUNICATION OVERHEAD 审中-公开
公开(公告)号：WO2006096316A3
公开(公告)日：2006-09-14
申请号：PCT/US2006/005996
申请日：2006-02-21
申请人： INTERDIGITAL TECHNOLOGY CORPORATION , ZHANG, Guodong , CHITRAPU, Prabhakar, R.
发明人： ZHANG, Guodong , CHITRAPU, Prabhakar, R.
IPC分类号： H04L9/00
摘要： A method for reducing overhead when transmitting an Internet Protocol (IP) packet begins by selecting a watermarking signature based on the IP address of the packet. The watermarking signature is applied to the packet and the IP address is removed from the packet. The packet is sent to a receiver, which looks up the IP address of the packet by using the watermarking signature. The watermarking signature can be a radio frequency watermarking signature or a digital watermarking signature. A similar method employing watermarking can be used to reduce medium access control header overhead.

35. 发明申请

WO2005036329A2 USER COGNITIVE ELECTRONIC DEVICE 审中-公开
标题翻译：用户认知电子设备
公开(公告)号：WO2005036329A2
公开(公告)日：2005-04-21
申请号：PCT/US2004/028161
申请日：2004-08-30
申请人： INTERDIGITAL TECHNOLOGY CORPORATION , OZLUTURK, Fatih , BRIANCON, Alain, Charles Louis , CHITRAPU, Prabhakar, R.
发明人： OZLUTURK, Fatih , BRIANCON, Alain, Charles Louis , CHITRAPU, Prabhakar, R.
IPC分类号： G06F
CPC分类号： H04M1/72563 , H04M1/247 , H04M1/6041
摘要： An electronic device receives user inputs. The user inputs indicating interactions of the user with processing of the electronic device. The device determines interaction patterns of the user with the device. The device uses the determined interaction patterns to determine adjustments for the electronic device. The electronic device is adjusted using the determined adjustments.
摘要翻译：
电子设备接收用户输入。用户输入指示用户与电子设备的处理的交互。设备确定用户与设备的交互模式。设备使用确定的交互模式来确定电子设备的调整。电子设备使用确定的调整进行调整。

36. 发明申请

WO2008130694A1 METHOD AND APPARATUS FOR INDICATING A TEMPORARY BLOCK FLOW USING A PIGGYBACKED ACK/NACK FIELD 审中-公开
标题翻译：用于使用PIGGYBACKED ACK / NACK字段表示临时块流的方法和装置
公开(公告)号：WO2008130694A1
公开(公告)日：2008-10-30
申请号：PCT/US2008/005122
申请日：2008-04-19
申请人： INTERDIGITAL TECHNOLOGY CORPORATION , LI, Yan , DICK, Stephen, G. , CHITRAPU, Prabhakar, R. , RUDOLF, Marian , AGHILI, Behrouz , MANSETA, Khushali, N.
发明人： LI, Yan , DICK, Stephen, G. , CHITRAPU, Prabhakar, R. , RUDOLF, Marian , AGHILI, Behrouz , MANSETA, Khushali, N.
IPC分类号： H04L1/16 , H04L1/00
CPC分类号： H03M13/09 , H04L1/0041 , H04L1/0054 , H04L1/0061 , H04L1/0073 , H04L1/1664 , H04L1/1671 , H04L2001/125
摘要： A method and an apparatus for indicating a temporary block flow (TBF) to which a piggybacked acknowledgement/non-acknowledgement (PAN) field is addressed. A method and apparatus of performing receive processing to reduce the probability of false acceptance of erroneous PANs are also disclosed. A transmit station generates a PAN check sequence (PCS) and performs a channel coding on a PAN field and the PCS. The transmit station scrambles the encoded bits of the PAN field and the PCS with a TBF-specific scrambling code. Because of the scrambling, the PCS decoding at a receive station will pass if the data block is received by an intended receive station, while the PCS decoding will fail if received by a non-intended receive station. Alternatively, the scrambling may be performed before the channel coding. Alternatively, the transmit station may combine the PAN field and a temporary flow identity (TFI) to generate a PCS.
摘要翻译：用于指示捎带的确认/非确认（PAN）字段被寻址到的临时块流（TBF）的方法和装置。还公开了执行接收处理以减少错误接收PAN的可能性的方法和装置。发送站产生PAN检查序列（PCS），并对PAN字段和PCS执行信道编码。发送站用TBF特定的扰码对PAN字段和PCS的编码比特进行加扰。由于加扰，如果预期接收站接收到数据块，则在接收站处的PCS解码将通过，而如果由非预期接收站接收到的话，则PCS解码将失败。或者，可以在信道编码之前执行加扰。或者，发送站可以组合PAN字段和临时流标识（TFI）以生成PCS。

37. 发明申请

WO2006116579A2 METHOD AND APPARATUS FOR SECURING WIRELESS COMMUNICATIONS 审中-公开
标题翻译：用于安全无线通信的方法和装置
公开(公告)号：WO2006116579A2
公开(公告)日：2006-11-02
申请号：PCT/US2006/015975
申请日：2006-04-26
申请人： INTERDIGITAL TECHNOLOGY CORPORATION , SHIN, Sung-Hyuk , SHAH, Yogendra, C. , CHITRAPU, Prabhakar, R. , BRIANCON, Alain, Charles, Louis
发明人： SHIN, Sung-Hyuk , SHAH, Yogendra, C. , CHITRAPU, Prabhakar, R. , BRIANCON, Alain, Charles, Louis
IPC分类号： G06K9/00
CPC分类号： H04K1/00
摘要： A method and apparatus for securing wireless communications are disclosed. A watermark message is encoded to watermark message symbols. A cover message is encoded to cover message symbols. The watermark message symbols are then overlaid onto the cover message symbols to generate a watermark-embedded cover message in a physical layer. The watermark message symbols have a substantially lower amplitude than the cover message symbols. Thus, the watermark message introduces small perturbation around the constellation points of the cover message symbols. The watermark message symbol may span or spread over a plurality of cover message symbols and may be encrypted with a secret key. The watermark message is used for improving receiver performance by transmitting additional information or for security enhancement purposes. The watermarking function may be selectively turned on and off.
摘要翻译：公开了一种用于确保无线通信的方法和装置。水印消息被编码为水印消息符号。封面信息被编码以覆盖消息符号。然后将水印消息符号覆盖到封面消息符号上，以在物理层中生成嵌入水印的封面消息。水印消息符号具有比覆盖消息符号大得多的幅度。因此，水印消息在覆盖消息符号的星座点周围引入小的扰动。水印消息符号可以覆盖多个封面消息符号并且可以用秘密密钥加密。水印消息用于通过发送附加信息或为了安全增强目的来改善接收机性能。可以选择性地打开和关闭水印功能。

38. 发明申请

WO2005079436A2 USER DIRECTED BACKGROUND TRANSFER AND DATA STORAGE 审中-公开
标题翻译：用户指导的背景传输和数据存储
公开(公告)号：WO2005079436A2
公开(公告)日：2005-09-01
申请号：PCT/US2005/004974
申请日：2005-02-17
申请人： INTERDIGITAL TECHNOLOGY CORPORATION , CHITRAPU, Prabhakar, R. , BRIANCON, Alain, Charles, Louis , KAEWELL, John, David, Jr.
发明人： CHITRAPU, Prabhakar, R. , BRIANCON, Alain, Charles, Louis , KAEWELL, John, David, Jr.
IPC分类号： H04L12/28
CPC分类号： H04L67/06 , H04L67/04 , H04W72/02 , H04W88/02
摘要： One embodiment of the present invention, file transfers are performed in a wireless communication network between a wireless transmit/receive unit (WTRU) and a location external to the WTRU for purposes of utilizing the data under predetermined conditions. In another embodiment, file transfer is performed by determining conditions for file transfer using the WTRU. The file transfer takes place subject to the determined conditions, and using the WTRU to automatically request the file transfer in response to the existence of the determined conditions.
摘要翻译：在本发明的一个实施例中，在无线发射/接收单元（WTRU）和WTRU外部的位置的无线通信网络中执行文件传输，以便在预定条件下利用数据。在另一个实施例中，通过使用WTRU确定文件传输的条件来执行文件传送。文件传输是根据确定的条件进行的，并且使用WTRU响应于确定的条件的存在来自动请求文件传送。

39. 发明申请

WO2005079241A3 USER CONTROLLED TRANSACTION ARCHIVING 审中-公开
公开(公告)号：WO2005079241A3
公开(公告)日：2005-09-01
申请号：PCT/US2005/003852
申请日：2005-02-08
申请人： INTERDIGITAL TECHNOLOGY CORPORATION , CHITRAPU, Prabhakar, R.
发明人： CHITRAPU, Prabhakar, R.
IPC分类号： H04M11/10
摘要： A connection between a wireless transmit/receive unit (WTRU) and another node through a wireless network is established. The connection is used for communication. A user input is received (step 42). In response to the received user input, a communication through the connection is recoded while the WTRU still communicates the communication to a user of the WTRU (step 44). The recorded communication is retrieved and the recorded communication is communicated to the user at a later time (step 48).

40. 发明申请

WO2005069836A3 ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING (OFDM) METHOD AND APPARATUS FOR PROTECTING AND AUTHENTICATING WIRELESSLY TRANSMITTED DIGITAL INFORMATION 审中-公开
公开(公告)号：WO2005069836A3
公开(公告)日：2005-08-04
申请号：PCT/US2005/001133
申请日：2005-01-13
申请人： INTERDIGITAL TECHNOLOGY CORPORATION , CHITRAPU, Prabhakar, R. , KAEWELL, John, David, Jr. , HERSCHAFT, Richard, Dan , HOFFMANN, John, Erich , OLESEN, Robert, Lind , SHIN, Sung-Hyuk
发明人： CHITRAPU, Prabhakar, R. , KAEWELL, John, David, Jr. , HERSCHAFT, Richard, Dan , HOFFMANN, John, Erich , OLESEN, Robert, Lind , SHIN, Sung-Hyuk
IPC分类号： H04J11/00
摘要： A method and apparatus for protecting and authenticating wirelessly transmitted digital information using numerous techniques. The apparatus may be a wireless orthogonal frequency division multiplexing (OFDM) communication system, a base station, a wireless transmit/receive unit (WTRU), a transmitter, a receiver and/or an integrated circuit (IC). The wireless OFDM communication system includes a transmitter which steganographically embeds digital information in an OFDM communication signal and wirelessly transmits the OFDM communication signal. The system further includes a receiver which receives the OFDM communication signal and extracts the steganographically embedded digital information from the received OFDM communication signal.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式