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1.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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2.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：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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4.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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公开(公告)号：US20120287859A1
公开(公告)日：2012-11-15
申请号：US13556094
申请日：2012-07-23
IPC分类号： H04W4/00
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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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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7.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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公开(公告)号：US20100039948A1
公开(公告)日：2010-02-18
申请号：US12359612
申请日：2009-01-26
CPC分类号： H04W72/082 , H04W24/10
摘要： Techniques for managing interference in a wireless network are described. A base station may receive enhanced pilot measurement reports from user equipments (UEs) and may make an interference management decision based on the received reports. The base station may select a serving base station for a UE based on an enhanced pilot measurement report received from the UE. The base station may determine resources with a low target interference level at a neighbor base station and may avoid scheduling a UE for uplink transmission on the resources. The base station may also determine whether to reserve resources for a neighbor base station based on data performance of the neighbor base station, whether the neighbor base station observes high interference from UEs served by the base station, or whether UEs served by the neighbor base station observe high interference from the base station, which may be determined based on the enhanced pilot measurement reports.
摘要翻译： 描述了用于管理无线网络中的干扰的技术。 基站可以从用户设备（UE）接收增强的导频测量报告，并且可以基于所接收的报告进行干扰管理决定。 基站可以基于从UE接收的增强型导频测量报告来选择用于UE的服务基站。 基站可以在相邻基站处确定具有低目标干扰电平的资源，并且可以避免在资源上调度UE用于上行链路传输。 基站还可以基于邻近基站的数据性能来确定是否为相邻基站预留资源，邻近基站是否观察到来自基站所服务的UE的高干扰，或者是由相邻基站服务的UE 观察来自基站的高干扰，其可以基于增强的导频测量报告来确定。
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公开(公告)号：US08599705B2
公开(公告)日：2013-12-03
申请号：US12359612
申请日：2009-01-26
CPC分类号： H04W72/082 , H04W24/10
摘要： Techniques for managing interference in a wireless network are described. A base station may receive enhanced pilot measurement reports from user equipments (UEs) and may make an interference management decision based on the received reports. The base station may select a serving base station for a UE based on an enhanced pilot measurement report received from the UE. The base station may determine resources with a low target interference level at a neighbor base station and may avoid scheduling a UE for uplink transmission on the resources. The base station may also determine whether to reserve resources for a neighbor base station based on data performance of the neighbor base station, whether the neighbor base station observes high interference from UEs served by the base station, or whether UEs served by the neighbor base station observe high interference from the base station, which may be determined based on the enhanced pilot measurement reports.
摘要翻译： 描述了用于管理无线网络中的干扰的技术。 基站可以从用户设备（UE）接收增强的导频测量报告，并且可以基于所接收的报告进行干扰管理决定。 基站可以基于从UE接收的增强型导频测量报告来选择用于UE的服务基站。 基站可以在相邻基站处确定具有低目标干扰电平的资源，并且可以避免在资源上调度UE用于上行链路传输。 基站还可以基于邻近基站的数据性能来确定是否为相邻基站预留资源，邻近基站是否观察到来自基站所服务的UE的高干扰，或者是否由邻居基站服务的UE 观察来自基站的高干扰，其可以基于增强的导频测量报告来确定。
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公开(公告)号：US20100008244A1
公开(公告)日：2010-01-14
申请号：US12483623
申请日：2009-06-12
申请人： Ashwin Sampath , Aamod D. Khandekar , Alexei Y. Gorokhov , Mohammad J. Borran , Naga Bhushan , Ravi Palanki
发明人： Ashwin Sampath , Aamod D. Khandekar , Alexei Y. Gorokhov , Mohammad J. Borran , Naga Bhushan , Ravi Palanki
CPC分类号： H04W72/082
摘要： Systems and methodologies are described that facilitate indicating a dominant interferer to a target serving base station in a wireless communication environment. A mobile device can detect presence or absence of a dominant interferer. Further, an access probe that includes information related to the presence or absence of the dominant interferer can be generated. For example, the information can be included in a payload of the access probe as an explicit flag, an explicit indication of an interference level, a Channel Quality Indicator (CQI) value (e.g., reserved versus non-reserved, . . . ), etc. Moreover, the access probe can be transmitted to the target serving base station to initiate an access procedure. The target serving base station can select a time-frequency resource to be utilized for a responsive downlink transmission (e.g. access grant signal, subsequent access related message, . . . ) as a function of the information included in the access probe.
摘要翻译： 描述了有助于在无线通信环境中向目标服务基站指示主要干扰源的系统和方法。 移动设备可以检测显着干扰源的存在或不存在。 此外，可以生成包括与显着干扰源的存在或不存在有关的信息的访问探针。 例如，信息可以包括在接入探测器的有效载荷中作为显式标志，干扰级别的显式指示，信道质量指示符（CQI）值（例如，保留与非保留的...）， 此外，可以将接入探针发送到目标服务基站以发起接入过程。 目标服务基站可以根据包括在接入探测器中的信息来选择要用于响应下行链路传输（例如接入许可信号，后续接入相关消息，...）的时间 - 频率资源。
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