公开(公告)号：CA2764229A1

公开(公告)日：2010-12-16

申请号：CA2764229

申请日：2010-06-09

Applicant: ERICSSON TELEFON AB L M

Inventor： ZANGI KAMBIZ ,  HAFEEZ ABDULRAUF ,  HUI DENNIS

IPC: H04L1/00

Abstract: A Coordinated Multipoint (COMP) cell controller performs network-centric Sink adaptation for User Equipment (UE) in the CoMP cell. The CoMP cell controller receives at least infrequent channel estimates from a UE in the CoMP cell, from which it estimates downlink channel and thermal noise at the UE. The CoMP cell controller is aware of the desired signal to be received at the UE, and the intra-CoMP cell interference to the UE caused by transmissions to other UEs in the CoMP cell. The CoMP cell receives from the UE reports of inter-CoMP cell interference caused by transmissions by other CoMP cells. Based on the downlink channel quality, the desired signal, the intra-CoMP cell interference, the intex-CoMP cell interference, and the thermal noise, the CoMP cell controller performs link adaptation by selecting modulation and coding schemes, and other transmission parameters, for mi upcoming transmission duration (such as a TTI).

公开(公告)号：DE602005009727D1

公开(公告)日：2008-10-23

申请号：DE602005009727

申请日：2005-09-22

Applicant: ERICSSON TELEFON AB L M

Inventor： HAFEEZ ABDULRAUF

IPC: H04L25/03

Abstract: A method and apparatus for jointly estimating channels used to propagate desired and interfering signals received by a wireless receiver. A blind parameter estimator in the wireless receiver includes a forward parameter estimator and a backward parameter estimator that each include an equalizer and a channel estimator for generating forward and backward channel estimates, respectively, for the desired and interfering signal channels. In one embodiment, the blind parameter estimator includes independent forward and backward parameter estimators that generate independent forward and backward channel estimates, respectively, where a final channel selector selects the final channel estimates based on a comparison between error metrics associated with the forward and backward channel estimates. In another embodiment, the blind parameter estimator includes serial per-survivor processing forward and backward parameter estimators that uses the backward channel estimates as the final channel estimates for the desired and interfering signal channels.

公开(公告)号：AT408294T

公开(公告)日：2008-09-15

申请号：AT05786287

申请日：2005-09-22

Applicant: ERICSSON TELEFON AB L M

Inventor： HAFEEZ ABDULRAUF

IPC: H04L25/03

Abstract: A method and apparatus for jointly estimating channels used to propagate desired and interfering signals received by a wireless receiver. A blind parameter estimator in the wireless receiver includes a forward parameter estimator and a backward parameter estimator that each include an equalizer and a channel estimator for generating forward and backward channel estimates, respectively, for the desired and interfering signal channels. In one embodiment, the blind parameter estimator includes independent forward and backward parameter estimators that generate independent forward and backward channel estimates, respectively, where a final channel selector selects the final channel estimates based on a comparison between error metrics associated with the forward and backward channel estimates. In another embodiment, the blind parameter estimator includes serial per-survivor processing forward and backward parameter estimators that uses the backward channel estimates as the final channel estimates for the desired and interfering signal channels.

公开(公告)号：IN10419DEN2014A

公开(公告)日：2015-08-14

申请号：IN10419DEN2014

申请日：2014-12-06

Applicant: ERICSSON TELEFON AB L M

Inventor： ZANGI KAMBIZ ,  HUI DENNIS ,  HAFEEZ ABDULRAUF

IPC: H04J11/00

Abstract: A Coordinated Multipoint (CoMP) cell controller performs network centric link adaptation for User Equipment (UE) in the CoMP cell. The CoMP cell controller receives at least infrequent channel estimates from a UE in the CoMP cell from which it estimates downlink channel and thermal noise at the UE. The CoMP cell controller is aware of the desired signal to be received at the UE and the intra CoMP cell interference to the UE caused by transmissions to other UEs in the CoMP cell. The CoMP cell receives from the UE reports of inter CoMP cell interference caused by transmissions by other CoMP cells. Based on the downlink channel quality the desired signal the intra CoMP cell interference the inter CoMP cell interference and the thermal noise the CoMP cell controller performs link adaptation by selecting modulation and coding schemes and other transmission parameters for an upcoming transmission duration (such as a TTI).

公开(公告)号：AU2013273112A1

公开(公告)日：2015-01-15

申请号：AU2013273112

申请日：2013-06-06

Applicant: ERICSSON TELEFON AB L M

Inventor： ZANGI KAMBIZ ,  HUI DENNIS ,  HAFEEZ ABDULRAUF

IPC: H04J11/00

Abstract: A Coordinated Multipoint (CoMP) cell controller performs network-centric link adaptation for User Equipment (UE) in the CoMP cell. The CoMP cell controller receives at least infrequent channel estimates from a UE in the CoMP cell, from which it estimates downlink channel and thermal noise at the UE. The CoMP cell controller is aware of the desired signal to be received at the UE, and the intra-CoMP cell interference to the UE caused by transmissions to other UEs in the CoMP cell. The CoMP cell receives from the UE reports of inter-CoMP cell interference caused by transmissions by other CoMP cells. Based on the downlink channel quality, the desired signal, the intra-CoMP cell interference, the inter-CoMP cell interference, and the thermal noise, the CoMP cell controller performs link adaptation by selecting modulation and coding schemes, and other transmission parameters, for an upcoming transmission duration (such as a TTI).

公开(公告)号：AU2010258274B2

公开(公告)日：2014-04-17

申请号：AU2010258274

申请日：2010-06-09

Applicant: ERICSSON TELEFON AB L M

Inventor： ZANGI KAMBIZ ,  HAFEEZ ABDULRAUF ,  HUI DENNIS

IPC: H04L1/00

Abstract: A Coordinated Multipoint (COMP) cell controller performs network-centric Sink adaptation for User Equipment (UE) in the CoMP cell. The CoMP cell controller receives at least infrequent channel estimates from a UE in the CoMP cell, from which it estimates downlink channel and thermal noise at the UE. The CoMP cell controller is aware of the desired signal to be received at the UE, and the intra-CoMP cell interference to the UE caused by transmissions to other UEs in the CoMP cell. The CoMP cell receives from the UE reports of inter-CoMP cell interference caused by transmissions by other CoMP cells. Based on the downlink channel quality, the desired signal, the intra-CoMP cell interference, the intex-CoMP cell interference, and the thermal noise, the CoMP cell controller performs link adaptation by selecting modulation and coding schemes, and other transmission parameters, for mi upcoming transmission duration (such as a TTI).

公开(公告)号：CA2630515A1

公开(公告)日：2007-06-14

申请号：CA2630515

申请日：2006-12-05

Applicant: ERICSSON TELEFON AB L M

Inventor： HAFEEZ ABDULRAUF

IPC: H04B7/04

Abstract: A system and method for transmitting multiple independent data streams from subsets of a plurality of radio antennas. The method includes determining by the receiver, an antenna partitioning, including relative phase rotations to be applied to each antenna, that results in the highest channel capacity among the possible partitionings. The receiver then provides partitioning information to the transmitter, including the number of antenna subsets, which antennas are included in each subset, the capacity of the data stream to be transmitted from each antenna subset, and the relative phase rotations to be applied to the antennas in each subset. The transmitter partitions the plurality of radio antennas into mutually exclusive subsets in accordance with the partitioning information, applies the relative phase rotation to each antenna, and transmits an independent data stream from each subset of antennas with a rate not greater than the stream capacity.

公开(公告)号：CA2764229C

公开(公告)日：2018-01-02

申请号：CA2764229

申请日：2010-06-09

Applicant: ERICSSON TELEFON AB L M (PUBL)

Inventor： ZANGI KAMBIZ ,  HAFEEZ ABDULRAUF ,  HUI DENNIS

IPC: H04L1/00

Abstract: A Coordinated Multipoint (COMP) cell controller performs network-centric Sink adaptation for User Equipment (UE) in the CoMP cell. The CoMP cell controller receives at least infrequent channel estimates from a UE in the CoMP cell, from which it estimates downlink channel and thermal noise at the UE. The CoMP cell controller is aware of the desired signal to be received at the UE, and the intra-CoMP cell interference to the UE caused by transmissions to other UEs in the CoMP cell. The CoMP cell receives from the UE reports of inter-CoMP cell interference caused by transmissions by other CoMP cells. Based on the downlink channel quality, the desired signal, the intra-CoMP cell interference, the intex-CoMP cell interference, and the thermal noise, the CoMP cell controller performs link adaptation by selecting modulation and coding schemes, and other transmission parameters, for mi upcoming transmission duration (such as a TTI).

公开(公告)号：AU2013273112B2

公开(公告)日：2016-01-28

申请号：AU2013273112

申请日：2013-06-06

Applicant: ERICSSON TELEFON AB L M

Inventor： ZANGI KAMBIZ ,  HUI DENNIS ,  HAFEEZ ABDULRAUF

IPC: H04J11/00

Abstract: A Coordinated Multipoint (CoMP) cell controller performs network-centric link adaptation for User Equipment (UE) in the CoMP cell. The CoMP cell controller receives at least infrequent channel estimates from a UE in the CoMP cell, from which it estimates downlink channel and thermal noise at the UE. The CoMP cell controller is aware of the desired signal to be received at the UE, and the intra-CoMP cell interference to the UE caused by transmissions to other UEs in the CoMP cell. The CoMP cell receives from the UE reports of inter-CoMP cell interference caused by transmissions by other CoMP cells. Based on the downlink channel quality, the desired signal, the intra-CoMP cell interference, the inter-CoMP cell interference, and the thermal noise, the CoMP cell controller performs link adaptation by selecting modulation and coding schemes, and other transmission parameters, for an upcoming transmission duration (such as a TTI).

公开(公告)号：AU2010258274A1

公开(公告)日：2012-01-19

申请号：AU2010258274

申请日：2010-06-09

Applicant: ERICSSON TELEFON AB L M

Inventor： ZANGI KAMBIZ ,  HAFEEZ ABDULRAUF ,  HUI DENNIS

IPC: H04L1/00

Abstract: A Coordinated Multipoint (COMP) cell controller performs network-centric Sink adaptation for User Equipment (UE) in the CoMP cell. The CoMP cell controller receives at least infrequent channel estimates from a UE in the CoMP cell, from which it estimates downlink channel and thermal noise at the UE. The CoMP cell controller is aware of the desired signal to be received at the UE, and the intra-CoMP cell interference to the UE caused by transmissions to other UEs in the CoMP cell. The CoMP cell receives from the UE reports of inter-CoMP cell interference caused by transmissions by other CoMP cells. Based on the downlink channel quality, the desired signal, the intra-CoMP cell interference, the intex-CoMP cell interference, and the thermal noise, the CoMP cell controller performs link adaptation by selecting modulation and coding schemes, and other transmission parameters, for mi upcoming transmission duration (such as a TTI).