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1. 发明申请

WO2007014175A1 SDMA FOR WCDMA WITH INCREASED CAPACITY BY USE OF MULTIPLE SCRAMBLING CODES 审中-公开
标题翻译：通过使用多个SCRAMBLING代码提高容量的WCDMA的SDMA
公开(公告)号：WO2007014175A1
公开(公告)日：2007-02-01
申请号：PCT/US2006/028730
申请日：2006-07-24
申请人： QUALCOMM INCORPORATED , SAMBHWANI, Sharad Deepak , GORE, Dhananjay Ashok , AGRAWAL, Avneesh , SUTIVONG, Arak , GOROKHOV, Alexei
发明人： SAMBHWANI, Sharad Deepak , GORE, Dhananjay Ashok , AGRAWAL, Avneesh , SUTIVONG, Arak , GOROKHOV, Alexei
IPC分类号： H04J13/00 , H04J11/00
CPC分类号： H04J13/0048 , H04J13/18
摘要： Systems and methodologies are described that facilitate increasing system capacity in a code-limited WCDMA (e.g., TDD, FDD, …) wireless communication environment. According to one aspect, a larger code space can be defined by introducing multiple code clusters within a sector, wherein each cluster has a unique scrambling code. Codes within a cluster can have orthogonal Walsh sequences that can be assigned to user devices to facilitate communicating over a wireless network and can overlap with codes in another cluster. The unique scrambling code assigned to each cluster can ensure that duplicate Walsh sequences in another cluster in the same sector appear as a pseudo-noise codes.
摘要翻译：描述了有助于在限制码的WCDMA（例如，TDD，FDD））无线通信环境中增加系统容量的系统和方法。根据一个方面，可以通过在扇区内引入多个码集来定义更大的码空间，其中每个群集具有唯一的扰码。群集内的代码可以具有可被分配给用户设备的正交沃尔什序列，以便于通过无线网络进行通信并且可以与另一个群集中的代码重叠。分配给每个簇的唯一扰码可以确保同一扇区中另一个簇中的重复沃尔什序列显示为伪噪声码。

2. 发明申请

WO2006019709A1 FREQUENCY DOMAIN FILTERING TO IMPROVE CHANNEL ESTIMATION IN MULTICARRIER SYSTEMS 审中-公开
标题翻译：频域滤波以提高多媒体系统中的信道估计
公开(公告)号：WO2006019709A1
公开(公告)日：2006-02-23
申请号：PCT/US2005/024613
申请日：2005-07-11
申请人： QUALCOMM INCORPORATED , GORE, Dhananjay Ashok , AGRAWAL, Avneesh , KHANDEKAR, Aamod , GOROKHOV, Alexei
发明人： GORE, Dhananjay Ashok , AGRAWAL, Avneesh , KHANDEKAR, Aamod , GOROKHOV, Alexei
IPC分类号： H04L27/26
CPC分类号： H04L27/2647 , H04L5/0007 , H04L5/0048 , H04L5/006 , H04L25/022 , H04L25/0226 , H04L25/023
摘要： A channel estimation system comprises a filtering component that selectively scales a plurality of carriers as a function of location of the plurality of carriers within a frequency band, wherein the plurality of carriers comprises at least one data carrier and at least one pilot carrier. A component thereafter extrapolates an observation from the at least one pilot carrier, wherein a channel is estimated as a function of the extrapolated observation. The scaling of the carriers facilitates reducing a flooring effect associated with channel estimation. The filtering component can be employed at a transmitter and/or at a receiver, and can be activated and/or deactivated as a function of a sensed data packet type.
摘要翻译：信道估计系统包括滤波部件，其选择性地按照频带内的多个载波的位置来缩放多个载波，其中多个载波包括至少一个数据载波和至少一个导频载波。然后，组件从至少一个导频载波外推观测，其中，估计信道作为外推观测的函数。载波的缩放有助于减少与信道估计相关的地板效应。滤波组件可以在发射机和/或接收机处采用，并且可以作为感测数据分组类型的功能被激活和/或去激活。

3. 发明申请

WO2006010159A1 ITERATIVE CHANNEL AND INTERFERENCE ESTIMATION WITH DEDICATED PILOT TONES FOR OFDMA 审中-公开
标题翻译：用于OFDMA的专用通道和干扰估计
公开(公告)号：WO2006010159A1
公开(公告)日：2006-01-26
申请号：PCT/US2005/025609
申请日：2005-07-18
申请人： QUALCOMM INCORPORATED , GOROKHOV, Alexei , AGRAWAL, Avneesh , GORE, Dhananjay Ashok
发明人： GOROKHOV, Alexei , AGRAWAL, Avneesh , GORE, Dhananjay Ashok
IPC分类号： H04L25/02
CPC分类号： H04L25/0236 , H04L5/0007 , H04L5/0048 , H04L5/023 , H04L25/0248 , H04L27/2647
摘要： Estimation of channel characteristics and interference level in a time-varying multi-carrier multi-user systems is carried out concurrently. To perform the estimation, a multitude of data symbols and dedicated pilot symbols are transmitted over the channel. Next, an initial estimate value is selected for the interference level. The initial estimate value for the interference level is used together with the received pilot symbols to provide a first estimate of the channel. The first estimate of the channel is used to determine a new updated value for the interference level, which in turn, is used to update the value of the first estimate of the channel iteratively. The iterations continue until the iteratively updated values of the interference level and channel satisfy predefined limits. The data symbols and the final updated value of the channel are subsequently used to proviEstimation of channel characteristics and interference level in a time-varying multi-carrier multi-user systems is carried out concurrently. To perform the estimation, a multitude of data symbols and dedicated pilot symbols are transmitted over the channel. Next, an initial estimate value is selected for the interference level. The initial estimate value for the interference level is used together with the received pilot symbols to provide a first estimate of the channel. The first estimate of the channel is used to determine a new updated value for the interference level, which in turn, is used to update the value of the first estimate of the channel iteratively. The iterations continue until the iteratively updated values of the interference level and channel satisfy predefined limits. The data symbols and the final updated value of the channel are subsequently used to provide a second estimate for the channel. A MMSE approach is followed where channel estimates and noise variance in an OFDM system are iteratively updted.
摘要翻译：并行执行时变多载波多用户系统中的信道特性和干扰电平的估计。为了执行估计，通过信道发送多个数据符号和专用导频符号。接下来，针对干扰电平选择初始估计值。干扰电平的初始估计值与接收到的导频符号一起使用以提供信道的第一估计。信道的第一估计用于确定用于干扰电平的新的更新值，其又用于迭代地更新信道的第一估计值。迭代继续，直到干扰电平和通道的迭代更新值满足预定义的限制。数据符号和信道的最终更新值随后用于提供信道特性，同时执行时变多载波多用户系统中的干扰电平。为了执行估计，通过信道发送多个数据符号和专用导频符号。接下来，针对干扰电平选择初始估计值。干扰电平的初始估计值与接收到的导频符号一起使用以提供信道的第一估计。信道的第一估计用于确定用于干扰电平的新的更新值，其又用于迭代地更新信道的第一估计值。迭代继续，直到干扰电平和通道的迭代更新值满足预定义的限制。随后使用数据符号和信道的最终更新值来提供信道的第二估计。遵循MMSE方法，其中OFDM系统中的信道估计和噪声方差被迭代地更新。

4. 发明申请

WO2007051181A1 SDMA RESOURCE MANAGEMENT 审中-公开
标题翻译： SDMA资源管理
公开(公告)号：WO2007051181A1
公开(公告)日：2007-05-03
申请号：PCT/US2006/060327
申请日：2006-10-27
申请人： QUALCOMM INCORPORATED , JI, Tingfang , GORE, Dhananjay Ashok , GOROKHOV, Alexei , DONG, Min , AGRAWAL, Avneesh
发明人： JI, Tingfang , GORE, Dhananjay Ashok , GOROKHOV, Alexei , DONG, Min , AGRAWAL, Avneesh
IPC分类号： H04L27/26 , H04Q7/36
CPC分类号： H04W72/06 , H04B1/713 , H04B7/026 , H04L5/0023 , H04L5/0037 , H04L5/0044 , H04L5/023
摘要： A method for allocating resources in a wireless communications environment comprises receiving a mapping between a first hop-port and frequency range, and determining whether to map a second access terminal to a second hop-port that is mapped to at least the same frequency range during a substantially similar instance in time, the determination made as a function of characteristics relating to a first access terminal associated with the first hop-port. The method can further include determining that the first access terminal is a candidate for employing Space-Division Multiple Access (SDMA), and mapping the second-hop port and associating the second access terminal with the second hop-port when the second access terminal is also a candidate for employing SDMA.
摘要翻译：一种用于在无线通信环境中分配资源的方法包括：接收第一跳跃端口和频率范围之间的映射，以及确定是否将第二接入终端映射到映射到至少相同频率范围的第二跳频端口基本相似的时间实例，根据与与第一跳跃端口相关联的第一接入终端的特性的函数进行确定。该方法还可以包括确定第一接入终端是采用空分多址（SDMA）的候选者，并且当第二接入终端是第二接入终端时，映射第二跳端口并将第二接入终端与第二跳接口相关联也是采用SDMA的候选人。

5. 发明申请

WO2006020020A1 MULTIPLE MODULATION SCHEMES IN SINGLE RATE LAYERING WIRELESS COMMUNICATION SYSTEMS 审中-公开
标题翻译：单速无线通信系统中的多种调制方案
公开(公告)号：WO2006020020A1
公开(公告)日：2006-02-23
申请号：PCT/US2005/025156
申请日：2005-07-15
申请人： QUALCOMM INCORPORATED , GOROKHOV, Alexei , AGRAWAL, Avneesh , GORE, Dhananjay Ashok , KADOUS, Tamer
发明人： GOROKHOV, Alexei , AGRAWAL, Avneesh , GORE, Dhananjay Ashok , KADOUS, Tamer
IPC分类号： H04L1/06
CPC分类号： H04L1/005 , H04L1/0003 , H04L1/0041 , H04L1/06
摘要： A MIMO communication system is adapted to encode multiple data streams at the same adaptable rate. Accordingly, the set of all possible modulation/rate combinations to all modulations with common rates is decreased thus resulting in the reduction of the number of possible packet formats carrying the data streams. Rate prediction is made more error-resilient, in part, due to the averaging over all information rates. Furthermore, the signaling overhead of the packets is reduced. Therefore, the tradeoff between the desired transmission rate granularity on the one hand, and robustness /signaling overhead on the other hand, is controlled by adjusting the coding rate.
摘要翻译： MIMO通信系统适于以相同的可适应速率对多个数据流进行编码。因此，对具有公共速率的所有调制的所有可能的调制/速率组合的集合被减少，从而导致承载数据流的可能分组格式的数量的减少。速率预测更具有弹性，部分原因是由于所有信息速率的平均值。此外，分组的信令开销减小。因此，通过调整编码率来控制一方面期望的传输速率粒度与鲁棒性/信令开销之间的权衡。

6. 发明申请

WO2006124042A1 ON-DEMAND REVERSE-LINK PILOT TRANSMISSION 审中-公开
标题翻译：根据需求反向引导传输
公开(公告)号：WO2006124042A1
公开(公告)日：2006-11-23
申请号：PCT/US2005/025802
申请日：2005-07-19
申请人： QUALCOMM INCORPORATED , SUTIVONG, Arak , AGRAWAL, Avneesh , GOROKHOV, Alexei , TEAGUE, Edward, Harrison
发明人： SUTIVONG, Arak , AGRAWAL, Avneesh , GOROKHOV, Alexei , TEAGUE, Edward, Harrison
IPC分类号： H04L25/02 , H04B7/26 , H04L1/20
CPC分类号： H04L25/0202 , H04W72/1226 , H04W72/1289
摘要： Pilots are transmitted on demand on a reverse link and used for channel estimation and data transmission on a forward link. A base station selects at least one terminal for on-demand pilot transmission on the reverse link. Each selected terminal is a candidate for receiving data transmission on the forward link. The base station assigns each selected terminal with a time-frequency allocation, which may be for a wideband pilot, a narrowband pilot, or some other type of pilot. The base station receives and processes on-demand pilot transmission from each selected terminal and derives a channel estimate for the terminal based on the received pilot transmission. The base station may schedule terminals for data transmission on the forward link based on the channel estimates for all selected terminals. The base station may also process data (e.g., perform beamforming or eigensteering) for transmission to each scheduled terminal based on its channel estimate.
摘要翻译：飞行员根据需要在反向链路上传输，用于前向链路上的信道估计和数据传输。基站在反向链路上选择至少一个用于按需导频发送的终端。每个选择的终端是用于在前向链路上接收数据传输的候选者。基站为每个选择的终端分配时间频率分配，其可以用于宽带导频，窄带导频或某种其他类型的导频。基站从每个所选终端接收并处理按需导频传输，并根据接收到的导频传输导出终端的信道估计。基站可以基于所有选择的终端的信道估计来安排在前向链路上进行数据传输的终端。基站还可以基于其信道估计来处理数据（例如，执行波束成形或本征导向）以传输到每个调度的终端。

7. 发明申请

WO2006069399A2 MULTIPLE MODULATION TECHNIQUE FOR USE IN A COMMUNICATION SYSTEM 审中-公开
标题翻译：用于通信系统的多种调制技术
公开(公告)号：WO2006069399A2
公开(公告)日：2006-06-29
申请号：PCT/US2005/047645
申请日：2005-12-22
申请人： QUALCOMM INCORPORATED , AGRAWAL, Avneesh , KHANDEKAR, Aamod , SUTIVONG, Arak , GOROKHOV, Alexei
发明人： AGRAWAL, Avneesh , KHANDEKAR, Aamod , SUTIVONG, Arak , GOROKHOV, Alexei
IPC分类号： H04B7/26
CPC分类号： H04L27/0008 , H04L27/2627 , H04L27/2649
摘要： A method for receiving an indication to apply a first modulation scheme to modulate one or more segments of the first portion; determining a first segment set, having at least one segment of the first portion for applying said first modulation scheme; modulating said first segment set of the first portion using said first modulation scheme; and modulating one or more segments of the second portion using a second scheme, different from first modulation scheme.
摘要翻译：一种用于接收用于应用第一调制方案以调制所述第一部分的一个或多个段的指示的方法; 确定具有用于施加所述第一调制方案的所述第一部分的至少一个段的第一段集合; 使用所述第一调制方案调制所述第一部分的所述第一段集合; 以及使用与第一调制方案不同的第二方案来调制第二部分的一个或多个段。

8. 发明申请

WO2008134337A1 ESTIMATION OF THERMAL NOISE AND RISE-OVER-THERMAL IN A WIRELESS COMMUNICATION SYSTEM 审中-公开
标题翻译：无线通信系统中热噪声和上升热的估计
公开(公告)号：WO2008134337A1
公开(公告)日：2008-11-06
申请号：PCT/US2008/061222
申请日：2008-04-23
申请人： QUALCOMM Incorporated , ZHANG, Danlu , WHEATLEY III, Charles E. , AGRAWAL, Avneesh , SAMBHWANI, Sharad Deepak , YUAN, Lu , IRANINEJAD, Mehraban
发明人： ZHANG, Danlu , WHEATLEY III, Charles E. , AGRAWAL, Avneesh , SAMBHWANI, Sharad Deepak , YUAN, Lu , IRANINEJAD, Mehraban
IPC分类号： H04B17/00
CPC分类号： H04B17/382 , H04B17/345
摘要： Techniques for estimating thermal noise and rise-over-thermal (RoT) in a communication system are described. In an aspect, thermal noise in a sideband may be measured and used to estimate thermal noise in a signal band. In one design, received power in the sideband may be measured, e.g., by computing total power of FFT transform coefficients within the sideband. Thermal noise may be estimated based on (e.g., by filtering) the measured received power in the sideband. Received power in the signal band may also be measured. Total received power may be estimated based on (e.g., by filtering) the measured received power in the signal band. RoT may then be estimated based on the estimated thermal noise and the estimated total received power. The estimated RoT may be used to estimate an available load for a cell, which may be used to admit and/or schedule users in the cell.
摘要翻译：描述了用于估计通信系统中的热噪声和上升热（RoT）的技术。在一方面，边带中的热噪声可以被测量并用于估计信号频带中的热噪声。在一种设计中，边带中的接收功率可以例如通过计算边带内的FFT变换系数的总功率来测量。可以基于（例如，通过滤波）边带中的测量的接收功率来估计热噪声。也可以测量信号频带中的接收功率。可以基于（例如，通过滤波）在信号频带中测量的接收功率来估计总接收功率。然后可以基于估计的热噪声和估计的总接收功率来估计RoT。估计的RoT可以用于估计小区的可用负载，其可以用于承认和/或调度小区中的用户。

9. 发明申请

WO2007025133A2 UPLINK SOFT HANDOFF SUPPORT IN UMTS TDD SYSTEMS FOR EFFICIENT UPLINK POWER AND RATE CONTROL 审中-公开
标题翻译： UMTS TDD系统中的UPLINK软越区切换支持有效的上行功率和速率控制
公开(公告)号：WO2007025133A2
公开(公告)日：2007-03-01
申请号：PCT/US2006/033228
申请日：2006-08-25
申请人： QUALCOMM INCORPORATED , SAMBHWANI, Sharad Deepak , AGRAWAL, Avneesh , MONTOJO, Juan
发明人： SAMBHWANI, Sharad Deepak , AGRAWAL, Avneesh , MONTOJO, Juan
IPC分类号： H04W36/18
CPC分类号： H04W36/18 , Y02D70/1242 , Y02D70/1262
摘要： Systems and methodologies are described that facilitate supporting uplink soft handoff in a UMTS TDD wireless communication environment. A virtual active set (VAS) for each user device can be generated at the network side of the communication environment, and sectors listed in each VAS can be informed of their respective listings. Sectors in a user device's VAS can be provided with a scrambling code and resource assignments from a nominal sector serving the user device, which information can be employed to attempt to receive and demodulate uplink signals from the user device at all base stations in the VAS thereof. Additionally, such resources can be employed to transmit power control and reverse activity commands to the user device on the downlink.
摘要翻译：描述了有助于支持UMTS TDD无线通信环境中的上行链路软切换的系统和方法。可以在通信环境的网络侧生成每个用户设备的虚拟活动集（VAS），并且每个VAS中列出的扇区可以被通知它们各自的列表。可以向用户设备的VAS中的扇区提供来自服务于用户设备的标称扇区的扰码和资源分配，该信息可以用于尝试在其VAS中的所有基站处接收和解调来自用户设备的上行链路信号。此外，这些资源可用于在下行链路上向用户设备传输功率控制和反向活动命令。

10. 发明申请

WO2007025308A1 FAST CELL SELECTION IN TD-CDMA (UMTS TDD) 审中-公开
标题翻译： TD-CDMA（UMTS TDD）中的快速小区选择
公开(公告)号：WO2007025308A1
公开(公告)日：2007-03-01
申请号：PCT/US2006/033771
申请日：2006-08-28
申请人： QUALCOMM INCORPORATED , SAMBHWANI, Sharad Deepak , AGRAWAL, Avneesh , MONTOJO, Juan
发明人： SAMBHWANI, Sharad Deepak , AGRAWAL, Avneesh , MONTOJO, Juan
IPC分类号： H04Q7/38
CPC分类号： H04W48/20 , H04W36/18
摘要： Systems and methodologies are described that facilitate performing fast cell selection in a user device wherein the user device can select a serving sector from a list of sectors in its virtual active set (VAS), while in communication with a wireless network. The serving sector can be different from a nominal sector whose scrambling code the user device employs for transmission on the uplink, which scrambling code can be known to all sectors listed in the VAS for the user device. In this manner, all sectors in whose coverage area the user device is located can be included in the user device's VAS and can receive and demodulate transmissions there from.
摘要翻译：描述了便于在用户设备中执行快速小区选择的系统和方法，其中用户设备可以在与无线网络通信的同时从其虚拟活动集（VAS）中的扇区列表中选择服务扇区。服务扇区可以不同于用户设备在上行链路上用于传输的扰码的标称扇区，哪个扰码可以被用于用户设备的VAS中列出的所有扇区。以这种方式，用户设备的覆盖区域中的所有扇区可以被包括在用户设备的VAS中，并且可以从其接收和解调传输。

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