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公开(公告)号：US20090197603A1
公开(公告)日：2009-08-06
申请号：US12331156
申请日：2008-12-09
IPC分类号： H04W36/00
CPC分类号： H04W36/0083 , Y02D70/00 , Y02D70/1222 , Y02D70/1242 , Y02D70/1262 , Y02D70/142 , Y02D70/146
摘要： Techniques for selecting a serving base station for a terminal in a wireless communication network are described. In one design, multiple candidate base stations for the terminal may be identified, with each candidate base station being a candidate for selection as the serving base station for the terminal. The multiple candidate base stations may include base stations with different transmit power levels and/or may support interference mitigation. One of the multiple candidate base stations may be selected as the serving base station. In one design, the serving base station may be selected based on at least one metric for each candidate base station. The at least one metrics may be for pathloss, effective transmit power, effective geometry, projected data rate, control channel reliability, network utility, etc. The selected candidate base station may have a lower SINR than a highest SINR among the multiple candidate base stations.
摘要翻译： 描述了用于在无线通信网络中为终端选择服务基站的技术。 在一种设计中，可以识别用于终端的多个候选基站，其中每个候选基站是用于选择的候选作为终端的服务基站。 多个候选基站可以包括具有不同发射功率电平的基站和/或可以支持干扰减轻。 可以选择多个候选基站中的一个作为服务基站。 在一种设计中，可以基于每个候选基站的至少一个度量来选择服务基站。 所述至少一个度量可以用于路径损耗，有效发射功率，有效几何，投影数据速率，控制信道可靠性，网络效用等。所选择的候选基站可以具有比多个候选基站中的最高SINR更低的SINR 。
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2.发明申请公开(公告)号：US20100099449A1
公开(公告)日：2010-04-22
申请号：US12425302
申请日：2009-04-16
申请人： Mohammad J. Borran , Avneesh Agrawal , Aamod D. Khandekar , Alexei Y. Gorokhov , Naga Bhushan , Tingfang Ji
发明人： Mohammad J. Borran , Avneesh Agrawal , Aamod D. Khandekar , Alexei Y. Gorokhov , Naga Bhushan , Tingfang Ji
CPC分类号： H04W52/243 , H04W72/08
摘要： Techniques for managing interference in a wireless network are described. In an aspect, reduce interference requests and interference indicators may be used for interference management to enable operation in scenarios with dominant interferers. In one design, a terminal may receive a reduce interference request from a first base station requesting lower interference on specified time-frequency resources. The terminal may also receive an interference indicator conveying the interference observed by a second base station. The terminal may determine its transmit power based on the reduce interference request and the interference indicator. For example, the terminal may determine an initial transmit power based on the reduce interference request (or the interference indicator) and may adjust the initial transmit power based on the interference indicator (or the reduce interference request) to obtain its transmit power. The terminal may transmit data to a serving base station at the determined transmit power.
摘要翻译： 描述了用于管理无线网络中的干扰的技术。 在一个方面，减少干扰请求和干扰指示符可以用于干扰管理，以使得能够在具有主要干扰源的情况下进行操作。 在一种设计中，终端可以从指定的时间 - 频率资源上请求较低干扰的第一基站接收减少干扰请求。 终端还可以接收传达由第二基站观测到的干扰的干扰指示符。 终端可以基于减少干扰请求和干扰指示符来确定其发射功率。 例如，终端可以基于减少干扰请求（或干扰指示符）来确定初始发射功率，并且可以基于干扰指示符（或减少干扰请求）来调整初始发射功率以获得其发射功率。 终端可以以所确定的发射功率向服务基站发送数据。
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3.发明申请公开(公告)号：US20100099428A1
公开(公告)日：2010-04-22
申请号：US12425243
申请日：2009-04-16
申请人： Naga Bhushan , Alexei Y. Gorokhov , Mohammad J. Borran , Avneesh Agrawal , Aamod D. Khandekar , Tingfang Ji
发明人： Naga Bhushan , Alexei Y. Gorokhov , Mohammad J. Borran , Avneesh Agrawal , Aamod D. Khandekar , Tingfang Ji
CPC分类号： H04W72/082 , H04J11/0059 , H04L5/0007 , H04L5/0035 , H04L5/0048 , H04W24/08
摘要： Techniques for transmitting null pilots to support interference estimation in a wireless network are described. A null pilot is non-transmission on designated time-frequency resources by a cell or a cluster of cells supporting cooperative transmission to a UE. The received power of the null pilot from the cell or cluster of cells may be indicative of interference from other cells. In one design, a cell in the cluster may determine resources for sending a null pilot by the cell. The cell may transmit the null pilot (i.e., send no transmissions) on the resources to allow UEs to estimate out-of-cluster interference. Some or all cells in the cluster may transmit null pilots on the same resources. The cell may receive interference and channel information from the UE and may send data transmission to the UE based on the interference and/or channel information. Remaining cells in the cluster may reduce interference to the UE.
摘要翻译： 描述了用于发送空导频以支持无线网络中的干扰估计的技术。 空导频是通过支持向UE的协作传输的小区或小区集群在指定的时间 - 频率资源上进行非传输。 来自小区或小区簇的空导频的接收功率可以指示来自其他小区的干扰。 在一种设计中，集群中的小区可以确定用于由小区发送空导频的资源。 小区可以在资源上发送空导频（即，不发送传输），以允许UE估计簇外干扰。 集群中的一些或所有单元可以在相同的资源上传输空导频。 小区可以从UE接收干扰和信道信息，并且可以基于干扰和/或信道信息向UE发送数据传输。 群集中的剩余小区可以减少对UE的干扰。
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公开(公告)号：US08228853B2
公开(公告)日：2012-07-24
申请号：US12331156
申请日：2008-12-09
CPC分类号： H04W36/0083 , Y02D70/00 , Y02D70/1222 , Y02D70/1242 , Y02D70/1262 , Y02D70/142 , Y02D70/146
摘要： Techniques for selecting a serving base station for a terminal in a wireless communication network are described. In one design, multiple candidate base stations for the terminal may be identified, with each candidate base station being a candidate for selection as the serving base station for the terminal. The multiple candidate base stations may include base stations with different transmit power levels and/or may support interference mitigation. One of the multiple candidate base stations may be selected as the serving base station. In one design, the serving base station may be selected based on at least one metric for each candidate base station. The at least one metrics may be for pathloss, effective transmit power, effective geometry, projected data rate, control channel reliability, network utility, etc. The selected candidate base station may have a lower SINR than a highest SINR among the multiple candidate base stations.
摘要翻译： 描述了用于在无线通信网络中为终端选择服务基站的技术。 在一种设计中，可以识别用于终端的多个候选基站，其中每个候选基站是用于选择的候选作为终端的服务基站。 多个候选基站可以包括具有不同发射功率电平的基站和/或可以支持干扰减轻。 可以选择多个候选基站中的一个作为服务基站。 在一种设计中，可以基于每个候选基站的至少一个度量来选择服务基站。 所述至少一个度量可以用于路径损耗，有效发射功率，有效几何，投影数据速率，控制信道可靠性，网络效用等。所选择的候选基站可以具有比多个候选基站中的最高SINR更低的SINR 。
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5.发明授权公开(公告)号：US08521206B2
公开(公告)日：2013-08-27
申请号：US12425302
申请日：2009-04-16
申请人： Mohammad J. Borran , Avneesh Agrawal , Aamod D. Khandekar , Alexei Y. Gorokhov , Naga Bhushan , Tingfang Ji
发明人： Mohammad J. Borran , Avneesh Agrawal , Aamod D. Khandekar , Alexei Y. Gorokhov , Naga Bhushan , Tingfang Ji
IPC分类号： H04B7/00
CPC分类号： H04W52/243 , H04W72/08
摘要： Techniques for managing interference in a wireless network are described. In an aspect, reduce interference requests and interference indicators may be used for interference management to enable operation in scenarios with dominant interferers. In one design, a terminal may receive a reduce interference request from a first base station requesting lower interference on specified time-frequency resources. The terminal may also receive an interference indicator conveying the interference observed by a second base station. The terminal may determine its transmit power based on the reduce interference request and the interference indicator. For example, the terminal may determine an initial transmit power based on the reduce interference request (or the interference indicator) and may adjust the initial transmit power based on the interference indicator (or the reduce interference request) to obtain its transmit power. The terminal may transmit data to a serving base station at the determined transmit power.
摘要翻译： 描述了用于管理无线网络中的干扰的技术。 在一个方面，减少干扰请求和干扰指示符可以用于干扰管理，以使得能够在具有主要干扰源的情况下进行操作。 在一种设计中，终端可以从指定的时间 - 频率资源请求较低干扰的第一基站接收减少干扰请求。 终端还可以接收传达由第二基站观测到的干扰的干扰指示符。 终端可以基于减少干扰请求和干扰指示符来确定其发射功率。 例如，终端可以基于减少干扰请求（或干扰指示符）来确定初始发射功率，并且可以基于干扰指示符（或减少干扰请求）来调整初始发射功率以获得其发射功率。 终端可以以所确定的发射功率向服务基站发送数据。
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6.发明授权公开(公告)号：US08559879B2
公开(公告)日：2013-10-15
申请号：US12425243
申请日：2009-04-16
申请人： Naga Bhushan , Alexei Y. Gorokhov , Mohammad J. Borran , Avneesh Agrawal , Aamod D. Khandekar , Tingfang Ji
发明人： Naga Bhushan , Alexei Y. Gorokhov , Mohammad J. Borran , Avneesh Agrawal , Aamod D. Khandekar , Tingfang Ji
IPC分类号： H04B1/00
CPC分类号： H04W72/082 , H04J11/0059 , H04L5/0007 , H04L5/0035 , H04L5/0048 , H04W24/08
摘要： Techniques for transmitting null pilots to support interference estimation in a wireless network are described. A null pilot is non-transmission on designated time-frequency resources by a cell or a cluster of cells supporting cooperative transmission to a UE. The received power of the null pilot from the cell or cluster of cells may be indicative of interference from other cells. In one design, a cell in the cluster may determine resources for sending a null pilot by the cell. The cell may transmit the null pilot (i.e., send no transmissions) on the resources to allow UEs to estimate out-of-cluster interference. Some or all cells in the cluster may transmit null pilots on the same resources. The cell may receive interference and channel information from the UE and may send data transmission to the UE based on the interference and/or channel information. Remaining cells in the cluster may reduce interference to the UE.
摘要翻译： 描述了用于发送空导频以支持无线网络中的干扰估计的技术。 空导频是通过支持向UE的协作传输的小区或小区集群在指定的时间 - 频率资源上进行非传输。 来自小区或小区簇的空导频的接收功率可以指示来自其他小区的干扰。 在一种设计中，集群中的小区可以确定用于由小区发送空导频的资源。 小区可以在资源上发送空导频（即，不发送传输），以允许UE估计簇外干扰。 集群中的一些或所有单元可以在相同的资源上传输空导频。 小区可以从UE接收干扰和信道信息，并且可以基于干扰和/或信道信息向UE发送数据传输。 群集中的剩余小区可以减少对UE的干扰。
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7.发明授权Method and apparatus for using virtual noise figure in a wireless communication network 有权在无线通信网络中使用虚拟噪声系数的方法和装置公开(公告)号：US08285321B2
公开(公告)日：2012-10-09
申请号：US12463885
申请日：2009-05-11
申请人： Tingfang Ji , Naga Bhushan , Aamod D. Khandekar , Avneesh Agrawal
发明人： Tingfang Ji , Naga Bhushan , Aamod D. Khandekar , Avneesh Agrawal
IPC分类号： H04B7/00
CPC分类号： H04W48/20
摘要： Techniques for using virtual noise figure for various functions in a wireless communication network are described. A virtual noise figure is an indication of a virtual noise level at a receiver, which may be higher than an actual noise level at the receiver. In an aspect, virtual noise figure may be used for serving base station selection. A terminal may receive information indicative of a virtual noise figure for each of at least one base station. The terminal may select a serving base station based on the virtual noise figure for each base station. The terminal may send data to the serving base station at a rate selected based on an actual noise figure for the serving base station. In other aspects, virtual noise figure may be used for interference management and/or power control.
摘要翻译： 描述了在无线通信网络中用于各种功能的虚拟噪声系数的技术。 虚拟噪声系数是接收机处的虚拟噪声电平的指示，其可能高于接收机处的实际噪声电平。 在一方面，虚拟噪声系数可用于服务基站选择。 终端可以接收指示至少一个基站中的每一个的虚拟噪声系数的信息。 终端可以基于每个基站的虚拟噪声系数来选择服务基站。 终端可以以服务基站的实际噪声系数选择的速率向服务基站发送数据。 在其他方面，虚拟噪声系数可用于干扰管理和/或功率控制。
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8.发明申请METHOD AND APPARATUS FOR USING VIRTUAL NOISE FIGURE IN A WIRELESS COMMUNICATION NETWORK 有权在无线通信网络中使用虚拟噪声图的方法和装置公开(公告)号：US20090286563A1
公开(公告)日：2009-11-19
申请号：US12463885
申请日：2009-05-11
申请人： Tingfang Ji , Naga Bhushan , Aamod D. Khandekar , Avneesh Agrawal
发明人： Tingfang Ji , Naga Bhushan , Aamod D. Khandekar , Avneesh Agrawal
CPC分类号： H04W48/20
摘要： Techniques for using virtual noise figure for various functions in a wireless communication network are described. A virtual noise figure is an indication of a virtual noise level at a receiver, which may be higher than an actual noise level at the receiver. In an aspect, virtual noise figure may be used for serving base station selection. A terminal may receive information indicative of a virtual noise figure for each of at least one base station. The terminal may select a serving base station based on the virtual noise figure for each base station. The terminal may send data to the serving base station at a rate selected based on an actual noise figure for the serving base station. In other aspects, virtual noise figure may be used for interference management and/or power control.
摘要翻译： 描述了在无线通信网络中用于各种功能的虚拟噪声系数的技术。 虚拟噪声系数是接收机处的虚拟噪声电平的指示，其可能高于接收机处的实际噪声电平。 在一方面，虚拟噪声系数可用于服务基站选择。 终端可以接收指示至少一个基站中的每一个的虚拟噪声系数的信息。 终端可以基于每个基站的虚拟噪声系数来选择服务基站。 终端可以以服务基站的实际噪声系数选择的速率向服务基站发送数据。 在其他方面，虚拟噪声系数可用于干扰管理和/或功率控制。
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9.发明授权公开(公告)号：US08971241B2
公开(公告)日：2015-03-03
申请号：US12568242
申请日：2009-09-28
申请人： Ravi Palanki , Kapil Bhattad , Naga Bhushan , Aamod D. Khandekar , Tingfang Ji , Juan Montojo
发明人： Ravi Palanki , Kapil Bhattad , Naga Bhushan , Aamod D. Khandekar , Tingfang Ji , Juan Montojo
CPC分类号： H04L1/0023 , H04B7/15557 , H04B7/2606 , H04J3/08 , H04L1/0001 , H04L5/0037 , H04W4/06 , H04W28/00
摘要： Techniques for supporting operation of relay stations in wireless communication systems are described. In an aspect, a bitmap may be sent by a base station and/or a relay station to identify subframes of at least two types in multiple radio frames. For example, the bitmap may indicate whether each subframe covered by the bitmap is of a first type or a second type. UEs may use the bitmap to control their operation. For example, a UE may perform channel estimation or measurement for the subframes of the first type and may skip channel estimation and measurement for the subframes of the second type. In another aspect, a base station may transmit data and/or control information on resources not used by a relay station to transmit a reference signal. This may avoid interference to the reference signal from the relay station, which may improve performance for UEs communicating with the relay station.
摘要翻译： 描述了用于支持无线通信系统中的中继站的操作的技术。 在一方面，位图可以由基站和/或中继站发送以识别多个无线电帧中的至少两种类型的子帧。 例如，位图可以指示位图所覆盖的每个子帧是否是第一类型或第二类型。 UE可以使用位图来控制它们的操作。 例如，UE可以对第一类型的子帧执行信道估计或测量，并且可以跳过第二类型的子帧的信道估计和测量。 在另一方面，基站可以发送关于中继站未使用的资源的数据和/或控制信息，以发送参考信号。 这可以避免对来自中继站的参考信号的干扰，这可以提高与中继站通信的UE的性能。
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公开(公告)号：US20110176435A1
公开(公告)日：2011-07-21
申请号：US12841292
申请日：2010-07-22
申请人： Aamod D. Khandekar , Ravi Palanki , Peter Gaal , Tingfang Ji , Naga Bhushan , Juan Montojo
发明人： Aamod D. Khandekar , Ravi Palanki , Peter Gaal , Tingfang Ji , Naga Bhushan , Juan Montojo
CPC分类号： H04W72/0446 , H04L1/0001 , H04L1/0026 , H04L1/0027 , H04L5/0007 , H04L5/1469 , H04L5/16 , H04W72/0413 , H04W72/042 , H04W72/082
摘要： Techniques for supporting communication in an asynchronous TDD wireless network are described. In an aspect, downlink transmissions and uplink transmissions may be sent on different carriers in an asynchronous TDD wireless network to mitigate interference. In one design, a station (e.g., a base station or a UE) may send a first transmission on a first carrier in a first time period and may receive a second transmission on a second carrier in a second time period. The station may only transmit, or only receive, or neither in each time period. In one design, allocation of carriers for the downlink and uplink may be performed when strong interference is detected, e.g., by a base station or a UE. When strong interference is not detected, the first and second carriers may each be used for both the downlink and uplink.
摘要翻译： 描述了用于支持异步TDD无线网络中的通信的技术。 在一方面，下行链路传输和上行链路传输可以在异步TDD无线网络中的不同载波上发送以减轻干扰。 在一种设计中，站（例如，基站或UE）可以在第一时间段内在第一载波上发送第一传输，并且可以在第二时间段内在第二载波上接收第二传输。 车站只能在每个时段内传送，也可以只接收。 在一种设计中，例如由基站或UE检测到强干扰时，可以执行用于下行链路和上行链路的载波的分配。 当没有检测到强干扰时，第一和第二载波可以分别用于下行链路和上行链路。
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