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公开(公告)号：US20090201846A1
公开(公告)日：2009-08-13
申请号：US12365777
申请日：2009-02-04
CPC分类号： H04W72/1263 , H04W72/00 , H04W72/04 , H04W72/0486 , H04W84/047 , H04W84/18 , H04W88/04
摘要： Systems and methodologies are described that facilitate scheduling over multiple hops in a wireless communication network. Radio resources can be partitioned into sets of sub-frames that can be allocated statically and/or dynamically. Statically allocated radio resources can be reassigned over time based on the loading on each hop and/or throughput imbalance. In addition, dynamic assignment of sub-frames to each hop can be based on traffic or channel conditions. Moreover, the radio resources can be dynamically allocated in a distributed scheme, wherein a base station controls the scheduling of resources, or a centralized scheme, wherein a relay station controls the scheduling of resources. Furthermore the allocation of radio resources can be transparent or explicit. In the transparent case, the access terminal listens directly to the base station, and the relay station does not transmit control information, such as DL or UL assignments. Conversely, when the allocation of resources is explicit the relay station does transmit control information.
摘要翻译： 描述了有助于在无线通信网络中的多跳上进行调度的系统和方法。 无线电资源可以被划分成静态和/或动态分配的子帧集合。 基于每跳和/或吞吐量不平衡的负载，可以随时间重新分配静态分配的无线电资源。 此外，每个跳跃的子帧的动态分配可以基于业务或信道条件。 此外，无线电资源可以以分布式方案动态分配，其中基站控制资源的调度或集中式方案，其中中继站控制资源的调度。 此外，无线电资源的分配可以是透明或明确的。 在透明情况下，接入终端直接监听基站，中继站不发送DL或UL分配等控制信息。 相反，当资源分配明确时，中继站确实发送控制信息。
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公开(公告)号：US08509162B2
公开(公告)日：2013-08-13
申请号：US12365777
申请日：2009-02-04
CPC分类号： H04W72/1263 , H04W72/00 , H04W72/04 , H04W72/0486 , H04W84/047 , H04W84/18 , H04W88/04
摘要： Systems and methodologies are described that facilitate scheduling over multiple hops in a wireless communication network. Radio resources can be partitioned into sets of sub-frames that can be allocated statically and/or dynamically. Statically allocated radio resources can be reassigned over time based on the loading on each hop and/or throughput imbalance. In addition, dynamic assignment of sub-frames to each hop can be based on traffic or channel conditions. Moreover, the radio resources can be dynamically allocated in a distributed scheme, wherein a base station controls the scheduling of resources, or a centralized scheme, wherein a relay station controls the scheduling of resources. Furthermore the allocation of radio resources can be transparent or explicit. In the transparent case, the access terminal listens directly to the base station, and the relay station does not transmit control information, such as DL or UL assignments. Conversely, when the allocation of resources is explicit the relay station does transmit control information.
摘要翻译： 描述了有助于在无线通信网络中的多跳上进行调度的系统和方法。 无线电资源可以被划分成静态和/或动态分配的子帧集合。 基于每跳和/或吞吐量不平衡的负载，可以随时间重新分配静态分配的无线电资源。 此外，每个跳跃的子帧的动态分配可以基于业务或信道条件。 此外，无线电资源可以以分布式方案动态分配，其中基站控制资源的调度或集中式方案，其中中继站控制资源的调度。 此外，无线电资源的分配可以是透明或明确的。 在透明情况下，接入终端直接监听基站，中继站不发送DL或UL分配等控制信息。 相反，当资源分配明确时，中继站确实发送控制信息。
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3.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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4.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：US08412222B2
公开(公告)日：2013-04-02
申请号：US12490078
申请日：2009-06-23
IPC分类号： H04B1/00
CPC分类号： H04L1/1692 , H04L1/0026 , H04L1/1671 , H04L1/1861 , H04L1/1887 , H04L2001/0093
摘要： Techniques for supporting broadcast/multiple transmission to multiple terminals with feedback and rate adaptation are described. In an aspect, a combination of HARQ and at least one shared feedback channel may be used to support broadcast/multicast transmission. In one design, a base station may send at least one transmission of a packet to multiple terminals, one transmission at a time. The base station may receive feedback information (e.g., NAK) for the packet from the terminals on the shared feedback channel(s). The base station may determine whether to terminate the packet early and/or may select at least one transmission parameter for another packet based on the feedback information for the packet. In another aspect, a transport format for a broadcast/multicast transmission may be selected based on CQI information from terminals receiving the transmission. The terminals may send CQI information at a slow rate and/or only certain terminals may send CQI information.
摘要翻译： 描述了用于支持具有反馈和速率适配的多个终端的广播/多传输的技术。 在一方面，可以使用HARQ和至少一个共享反馈信道的组合来支持广播/多播传输。 在一种设计中，基站可以向多个终端发送分组的至少一个传输，一次发送一个。 基站可以从共享反馈信道上的终端接收针对分组的反馈信息（例如，NAK）。 基站可以基于分组的反馈信息来确定是否提前终止分组和/或可以针对另一分组选择至少一个传输参数。 在另一方面，可以基于接收到传输的终端的CQI信息来选择用于广播/多播传输的传输格式。 终端可以以慢速率发送CQI信息和/或仅某些终端可以发送CQI信息。
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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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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：US20090323577A1
公开(公告)日：2009-12-31
申请号：US12490078
申请日：2009-06-23
CPC分类号： H04L1/1692 , H04L1/0026 , H04L1/1671 , H04L1/1861 , H04L1/1887 , H04L2001/0093
摘要： Techniques for supporting broadcast/multiple transmission to multiple terminals with feedback and rate adaptation are described. In an aspect, a combination of HARQ and at least one shared feedback channel may be used to support broadcast/multicast transmission. In one design, a base station may send at least one transmission of a packet to multiple terminals, one transmission at a time. The base station may receive feedback information (e.g., NAK) for the packet from the terminals on the shared feedback channel(s). The base station may determine whether to terminate the packet early and/or may select at least one transmission parameter for another packet based on the feedback information for the packet. In another aspect, a transport format for a broadcast/multicast transmission may be selected based on CQI information from terminals receiving the transmission. The terminals may send CQI information at a slow rate and/or only certain terminals may send CQI information.
摘要翻译： 描述了用于支持具有反馈和速率适配的多个终端的广播/多传输的技术。 在一方面，可以使用HARQ和至少一个共享反馈信道的组合来支持广播/多播传输。 在一种设计中，基站可以向多个终端发送分组的至少一个传输，一次发送一个。 基站可以从共享反馈信道上的终端接收针对分组的反馈信息（例如，NAK）。 基站可以基于分组的反馈信息来确定是否提前终止分组和/或可以针对另一分组选择至少一个传输参数。 在另一方面，可以基于接收到传输的终端的CQI信息来选择用于广播/多播传输的传输格式。 终端可以以慢速率发送CQI信息和/或仅某些终端可以发送CQI信息。
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9.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：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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