公开(公告)号：US10165589B2

公开(公告)日：2018-12-25

申请号：US15809077

申请日：2017-11-10

Applicant: Cisco Technology, Inc.

Inventor： Ritesh K. Madan ,  Vikram Chandrasekhar ,  Rohit Umesh Nabar ,  Kedar Durgadas Shirali ,  Qing Zhao

IPC: H04W72/12 ,  H04W72/04 ,  H04W72/08 ,  H04W16/32 ,  H04L5/00

Abstract: An example method is provided in one example embodiment and includes receiving performance metric information from a plurality of small cell radios, wherein the performance metric information includes, at least in part, a number of user equipment that are to be scheduled on a first type and a second type of subframes for each small cell radio; determining resource allocation parameters for the plurality of small cell radios; exchanging interference information between two or more small cell radios of the plurality of small cell radios that includes an indication of whether a particular small cell radio is interfering with or is interfered by another small cell radio of the two or more small cell radios; and scheduling downlink resource transmissions on the first type and the second type of subframes for user equipment served by the two or more small cell radios.

公开(公告)号：US20170295515A1

公开(公告)日：2017-10-12

申请号：US15630696

申请日：2017-06-22

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Ritesh K. Madan ,  Rohit Umesh Nabar

IPC: H04W28/04 ,  H04W28/02

CPC classification number: H04W16/10 ,  H04W28/0236 ,  H04W28/04

Abstract: A method is provided in one example embodiment and may include determining for each of one or more macro cell radios, a corresponding set of one or more small cell radios that are under a coverage area of each of the one or more macro cell radios, wherein each corresponding set is associated with a corresponding macro cell radio; calculating interference coordination parameters for each small cell radio belonging to each corresponding set, wherein the interference coordination parameters for each small cell radio belonging to each corresponding set comprises an uplink interference budget for each small cell radio; and communicating the interference coordination parameters to each small cell radio belonging to each corresponding set.

公开(公告)号：US20170208526A1

公开(公告)日：2017-07-20

申请号：US15002187

申请日：2016-01-20

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Ritesh K. Madan ,  Ehsan Haghani ,  Rohit Umesh Nabar

IPC: H04W36/32 ,  H04W72/08 ,  H04W52/28 ,  H04W36/00 ,  H04W72/04 ,  H04W36/22

CPC classification number: H04W36/32 ,  H04W36/0083 ,  H04W36/0094 ,  H04W36/22 ,  H04W52/143 ,  H04W52/244 ,  H04W52/285 ,  H04W52/367 ,  H04W52/40 ,  H04W72/0473 ,  H04W72/082

Abstract: A method is provided in one example embodiment and may include generating feedback information by a small cell radio and a macro cell radio; setting a high mobility handover threshold for the macro cell radio based, at least in part, on the feedback information, wherein the high mobility handover threshold is used to trigger handover of one or more high mobility user equipment (UE) associated with the macro cell radio to the small cell radio; and setting a maximum downlink transmit power for the small cell radio based, at least in part, on the feedback information and the high mobility handover threshold.

公开(公告)号：US09571228B2

公开(公告)日：2017-02-14

申请号：US14557722

申请日：2014-12-02

Applicant: Cisco Technology, Inc.

Inventor： Ritesh Kumar Madan ,  Rohit Umesh Nabar ,  Vikram Chandrasekhar

IPC: H04L1/00

CPC classification number: H04L1/0015 ,  H04B17/336 ,  H04L1/0026 ,  H04W52/143

Abstract: The present disclosure provides a fine-grained link adaptation mechanism that allows for link adaptation at a resource block granularity. To this end, the fine-grained link adaptation mechanism can determine the effective signal-to-interference-plus-noise ratio for individual user equipment in a particular cell at the resource block granularity. This way, the transmitter can use the effective signal-to-interference-plus-noise ratio to adapt the modulation and coding scheme at the resource block granularity. The fine-grained link adaptation mechanism can be introduced to a long term evolution (LTE) network without substantial redesign of the LTE network.

Abstract translation: 本公开提供了一种细粒度的链路自适应机制，其允许以资源块粒度的链路适配。 为此，细粒度的链路自适应机制可以以资源块粒度来确定特定小区中的各个用户设备的有效信号与干扰加噪声比。 这样，发射机可以利用有效的信号与干扰加噪声比来调整和编码方案在资源块的粒度上。 可以将细粒度的链路适配机制引入到长期演进（LTE）网络中，而不需要对LTE网络进行大量重新设计。

公开(公告)号：US10680743B2

公开(公告)日：2020-06-09

申请号：US15429016

申请日：2017-02-09

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Ritesh Kumar Madan ,  Rohit Umesh Nabar ,  Vikram Chandrasekhar

IPC: H04L1/00 ,  H04B17/336 ,  H04W52/14

Abstract: The present disclosure provides a fine-grained link adaptation mechanism that allows for link adaptation at a resource block granularity. To this end, the fine-grained link adaptation mechanism can determine the effective signal-to-interference-plus-noise ratio for individual user equipment in a particular cell at the resource block granularity. This way, the transmitter can use the effective signal-to-interference-plus-noise ratio to adapt the modulation and coding scheme at the resource block granularity. The fine-grained link adaptation mechanism can be introduced to a long term evolution (LTE) network without substantial redesign of the LTE network.

公开(公告)号：US09848389B2

公开(公告)日：2017-12-19

申请号：US14816957

申请日：2015-08-03

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Rohit Umesh Nabar ,  Ritesh K. Madan

IPC: H04W72/08 ,  H04W72/04 ,  H04W52/04 ,  H04W52/14 ,  H04W52/22 ,  H04W52/24

CPC classification number: H04W52/04 ,  H04W16/10 ,  H04W52/143 ,  H04W52/225 ,  H04W52/244 ,  H04W52/247 ,  H04W72/042 ,  H04W72/0453 ,  H04W72/082

Abstract: An example method is provided in one example embodiment and includes receiving a first message indicative of whether a first cell is non-interfering to at least one neighboring cell, determining whether the first cell is non-interfering to the at least one neighboring cell based upon the first message, and responsive to a determination that the first cell is not non-interfering to the at least one neighboring cells, reducing a power level of one or more downlink resources of a fractional frequency reuse portion of a frequency spectrum associated with the first cell.

公开(公告)号：US09826545B2

公开(公告)日：2017-11-21

申请号：US14951987

申请日：2015-11-25

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Ritesh K. Madan ,  Vikram Chandrasekhar ,  Rohit Umesh Nabar ,  Kedar Durgadas Shirali ,  Qing Zhao

IPC: H04J3/00 ,  H04W72/12 ,  H04W72/04 ,  H04W72/08 ,  H04W16/32 ,  H04L5/00

CPC classification number: H04W72/1273 ,  H04L5/0035 ,  H04L5/0073 ,  H04W16/32 ,  H04W72/0413 ,  H04W72/042 ,  H04W72/082 ,  H04W72/1226 ,  H04W72/1231 ,  H04W72/1289

Abstract: An example method is provided in one example embodiment and includes receiving performance metric information from a plurality of small cell radios, wherein the performance metric information includes, at least in part, a number of user equipment that are to be scheduled on a first type and a second type of subframes for each small cell radio; determining resource allocation parameters for the plurality of small cell radios; exchanging interference information between two or more small cell radios of the plurality of small cell radios that includes an indication of whether a particular small cell radio is interfering with or is interfered by another small cell radio of the two or more small cell radios; and scheduling downlink resource transmissions on the first type and the second type of subframes for user equipment served by the two or more small cell radios.

公开(公告)号：US20170202005A1

公开(公告)日：2017-07-13

申请号：US14993859

申请日：2016-01-12

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Ritesh K. Madan ,  Rohit Umesh Nabar

IPC: H04W72/12 ,  H04W24/08

CPC classification number: H04W72/1231 ,  H04L47/26 ,  H04L47/56 ,  H04L47/6255 ,  H04W28/16

Abstract: A method is provided in one example embodiment and includes generating feedback information at a first remote access point (AP), wherein the feedback information is associated with one or more user equipment served by the first remote AP; determining constraints for the first remote AP at a central controller based on the feedback information received from the first remote AP and feedback information received from one or more other remote APs that neighbor the first remote AP, wherein the constraints are determined for a plurality of transmission time intervals (TTIs); and scheduling resource blocks (RBs) for the one or more user equipment served by the first remote AP for one or more of the plurality of TTIs based, at least in part, on constraints received from the central controller.

公开(公告)号：US09686798B1

公开(公告)日：2017-06-20

申请号：US14597036

申请日：2015-01-14

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Qing Zhao ,  Kedar Durgadas Shirali ,  Rohit Umesh Nabar

IPC: H04W72/04 ,  H04W72/12 ,  H04W72/02 ,  H04W72/06

CPC classification number: H04W72/06 ,  H04W72/042 ,  H04W72/1257 ,  H04W72/1289

Abstract: A method is provided in one example embodiment and may include ranking a plurality of downlink control information (DCI) messages according to a first rank criterion; ranking a plurality of allowable resource sets for each ranked DCI message according to a second rank criterion; and allocating resources for each ranked DCI message based, at least in part, on whether particular resources, which are to be allocated for a particular ranked DCI message, are collided, at least in part, with previously allocated resources for one or more other DCI messages.

公开(公告)号：US20170070323A1

公开(公告)日：2017-03-09

申请号：US14848026

申请日：2015-09-08

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Ritesh K. Madan ,  Rohit Umesh Nabar

IPC: H04L5/00 ,  H04B1/10 ,  H04W72/08

CPC classification number: H04L5/0037 ,  H04B1/10 ,  H04J11/005 ,  H04L5/0032 ,  H04L5/0073 ,  H04W52/04 ,  H04W52/143 ,  H04W52/243

Abstract: An example method is provided in one example embodiment and includes receiving feedback information from at least one controlled cell indicative of interference received at one or more user equipment devices served by the at least one cell. The at least one controlled cell is controlled by an operator associated with the at least one controlled cell. The method further includes selecting one or more user equipment devices that is determined to have received interference from at least one non-controlled cell that is greater than a predetermined threshold. The at least one non-controlled cell is not controlled by the operator associated with the at least one controlled cell. The method still further includes determining a power level for a subset of common resources from among a set of common resources shared among the at least one controlled cell based upon the received feedback information.

Abstract translation: 在一个示例性实施例中提供了示例性方法，并且包括从至少一个受控单元接收指示在由至少一个小区服务的一个或多个用户设备设备处接收的干扰的反馈信息。 所述至少一个受控细胞由与所述至少一个受控细胞相关联的操作者控制。 该方法还包括选择一个或多个被确定已从至少一个非受控小区接收到大于预定阈值的非受控小区的干扰的用户设备设备。 所述至少一个非受控细胞不由与所述至少一个受控细胞相关联的操作者控制。 该方法还包括：基于接收到的反馈信息，从至少一个受控小区之间共享的一组共同资源中确定公共资源子集的功率级。