公开(公告)号：AU2009202323A1

公开(公告)日：2009-07-02

申请号：AU2009202323

申请日：2009-06-11

Applicant: QUALCOMM INC

Inventor： AGRAWAL AVNEESH ,  LING FUYUN ,  KHANDEKAR AAMOD

IPC: H04L25/03 ,  H04L1/00

Abstract: For an iterative channel and interference estimation and decoding scheme, prior information for channel gain and interference is initially obtained based on received pilot symbols. Forward information for code bits corresponding to received data symbols is derived based on the received data symbols and the prior information and then decoded to obtain feedback information for the code bits corresponding to the received data symbols. A posteriori information for channel gain and interference for each received data symbol is derived based on the feedback information for that received data symbol. The a posteriori information for the received data symbols and the prior information are combined to obtain updated information for channel gain and interference for each received data symbol. The process can be repeated for any number of iterations. The prior, a posteriori, and updated information may be represented by joint probability distributions on channel gain and interference. The forward and feedback information may be represented by log-likelihood ratios.

公开(公告)号：AU2008326522A1

公开(公告)日：2009-05-28

申请号：AU2008326522

申请日：2008-11-18

Applicant: QUALCOMM INC

Inventor： TINNAKORNSRISUPHAP PEERAPOL ,  PALANKI RAVI ,  ULUPINAR FATIH ,  AGASHE PARAG A ,  HORN GAVIN B ,  PRAKASH RAJAT ,  AGRAWAL AVNEESH ,  KHANDEKAR AAMOD D ,  GUPTA RAJARSHI

IPC: H04W24/02

公开(公告)号：CA2705698A1

公开(公告)日：2009-05-22

申请号：CA2705698

申请日：2008-11-05

Applicant: QUALCOMM INC

Inventor： KHANDEKAR AAMOD ,  GOROKHOV ALEXEI ,  BHUSHAN NAGA ,  PALANKI RAVI ,  SAMPATH ASHWIN ,  AGRAWAL AVNEESH

IPC: H04W48/08

Abstract: Providing for management of wireless communications in a heterogeneous wireless access point (AP) environment is described herein. By way of example, system data of an over-the-air message can be configured to include information identifying a distinct type of transmitting base station. In some aspects, the information can include an access type of the base station and/or a sector ID for distinguishing the base station among large numbers of other base stations. According to other aspects, the information can include wireless channel resources designated for a particular type of base station, or blanked by the transmitting base station, to facilitate interference reduction on such resources. By employing aspects of wireless communication management disclosed herein, efficient and reliable communication can be affected in large heterogeneous AP networks.

公开(公告)号：CA2705497A1

公开(公告)日：2009-05-22

申请号：CA2705497

申请日：2008-11-05

Applicant: QUALCOMM INC

Inventor： KHANDEKAR AAMOD ,  GOROKHOV ALEXEI ,  BHUSHAN NAGA ,  PALANKI RAVI ,  SAMPATH ASHWIN ,  AGRAWAL AVNEESH

IPC: H04W48/08

Abstract: Providing for management of wireless communications in a heterogeneous wireless access point (AP) environment is described herein. By way of example, system data of an over-the-air message can be configured to include information identifying a distinct type of transmitting base station. In some aspects, the information can include an access type of the base station and/or a sector ID for distinguishing the base station among large numbers of other base stations. According to other aspects, the information can include wireless channel resources designated for a particular type of base station, or blanked by the transmitting base station, to facilitate interference reduction on such resources. By employing aspects of wireless communication management disclosed herein, efficient and reliable communication can be affected in large heterogeneous AP networks.

公开(公告)号：AT431054T

公开(公告)日：2009-05-15

申请号：AT04796869

申请日：2004-10-28

Applicant: QUALCOMM INC

Inventor： JI TINGFANG ,  AGRAWAL AVNEESH ,  TEAGUE EDWARD

IPC: H04W16/10 ,  H04W16/12 ,  H04W16/02 ,  H04W72/08

Abstract: A terminal is allocated system resources not used by strong interference entities, if any, identified for the terminal, and wherein each strong interference entity is an entity for which mitigation of interference with the terminal is sought. For restrictive reuse, each cell (or each sector) is assigned (1) a set of usable subbands that may be allocated to users in the cell and (2) a set of forbidden subbands that is not used. The usable and forbidden sets for each cell are orthogonal to one other. The usable set for each cell also overlaps the forbidden set for each neighboring cell. A user u in a cell x may be allocated subbands in the usable set for that cell. If user u observes/causes high level of interference from/to a neighboring cell y, then user u may be allocated subbands from a "restricted" set containing subbands included in both the usable set for cell x and the forbidden set for cell y. User u would then observe/cause no interference from/to cell y. The subband restriction may be extended to avoid interference from multiple neighboring cells.

公开(公告)号：BRPI0519732A2

公开(公告)日：2009-03-10

申请号：BRPI0519732

申请日：2005-12-22

Applicant: QUALCOMM INC

Inventor： JULIAN DAVID JONATHAN ,  SUTIVONG ARAK ,  AGRAWAL AVNEESH ,  TEAGUE EDWARD HARRISON

IPC: H04W36/06

Abstract: The disclosed embodiments provide for methods and systems for selecting sectors for handoff in a communication system. According to one aspect, the method includes monitoring an indicia of transmit power on a plurality of RL control channels directed to a plurality of sectors, and selecting one of the sectors as a candidate for a RL handoff. The disclosed embodiments also provide for methods and systems for indicating a selected serving sector for handoff in a communication system. According to one aspect, the method includes sending a first signal to a first sector to indicate the first sector as a serving sector for a forward-link handoff, and sending a second signal to a second sector to indicate the second sector as a serving sector for a reverse-link handoff.

公开(公告)号：AU2008288790A1

公开(公告)日：2009-02-26

申请号：AU2008288790

申请日：2008-08-22

Applicant: QUALCOMM INC

Inventor： KAPOOR SAMIR ,  GOROKHOV ALEXEI ,  AGRAWAL AVNEESH

IPC: H04W48/00

公开(公告)号：BRPI0519541A2

公开(公告)日：2009-02-17

申请号：BRPI0519541

申请日：2005-12-22

Applicant: QUALCOMM INC

Inventor： KHANDEKAR AAMOD ,  AGRAWAL AVNEESH

IPC: H04L25/02 ,  H04J99/00

Abstract: Embodiments described provide for resource allocation for a transmission to a wireless device. The frequency band is partitioned into at least two contiguous subbands. A determination is made whether it is desirable to transmit in a single subband or in more than one subband. The transmission is assigned to occur in either the single subband or to operate in more than one subband. If the transmission is restricted to one subband, the hop pattern is also restricted to subcarriers within the particular subband.

公开(公告)号：CA2692436A1

公开(公告)日：2009-01-22

申请号：CA2692436

申请日：2008-07-15

Applicant: QUALCOMM INC

Inventor： JI TINGFANG ,  NAGUIB AYMAN FAWZY ,  AGRAWAL AVNEESH

IPC: H04W72/00

Abstract: A base station that is configured for supporting hard handoff as well as the corresponding method is described, the method comprises identify a mobile station (120) potentially performing hard handoff to a base station (110), allocate logical resources of the base station (110) to the mobile station (120) prior to the hard handoff and allocate no physical resources of the base station (110) to the mobile station (120) prior to the hard handoff. Also the mobile station (120) and the corresponding method is described.

公开(公告)号：CA2689435A1

公开(公告)日：2008-12-24

申请号：CA2689435

申请日：2008-06-20

Applicant: QUALCOMM INC

Inventor： JI TINGFANG ,  GOROKHOV ALEXEI ,  AGRAWAL AVNEESH ,  BHUSHAN NAGA

IPC: H04W16/04

Abstract: Systems and methodologies are described that facilitate employing distrib uted frequency planning and reuse factor optimization based upon forward lin k and/or reverse link interference management techniques. An optimal reuse f actor for a base station can be determined based upon a metric that evaluate s levels of service associated with neighboring base stations. Moreover, a s ubset of available resource sets can be selected for use by the base station ; thus, a base station specific collection of resource sets can be formed th rough such selection. Further, mappings of each resource set to a set of phy sical resources can be disseminated in a network or portion thereof. Accordi ng to another example, frequency hopping can be constrained to use of resour ces within a resource set (rather than across more than one resource set) as provided in a base station specific hopping pattern.