中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

833 records (took 0.028 seconds)

    METHOD AND APPARATUS FOR ACHIEVING FLEXIBLE BANDWIDTH USING VARIABLE GUARD BANDS
    101.
    发明专利
    METHOD AND APPARATUS FOR ACHIEVING FLEXIBLE BANDWIDTH USING VARIABLE GUARD BANDS 未知

    公开(公告)号：SG10201508533YA

    公开(公告)日：2015-11-27

    申请号：SG10201508533Y

    申请日：2006-10-27

    Applicant: QUALCOMM INC

    Inventor： KHANDEKAR AAMOD ,  PALANKI RAVI

    Abstract: Techniques to flexibly support different bandwidths in a wireless communication system are described. The system supports a configurable operating bandwidth using a fixed design bandwidth and variable guard bands. Values for various parameters such as fast Fourier transform (FFT) size, cyclic prefix length, and sample rate may be selected based on the design bandwidth. The design bandwidth may be associated with K total subcarriers. Different operating bandwidths may be supported by selecting different numbers of usable subcarriers. A transmitter and a receiver may perform processing for a transmission using the same FFT size, cyclic prefix length, and sample rate regardless of the selected operating bandwidth.; The system may use different operating bandwidths and/or different parameter values (e.g., FFT sizes) for different portions of a transmission, e.g., a preamble and a main body of the transmission.

    METHOD AND APPARATUS FOR ACHIEVING FLEXIBLE BANDWIDTH USING VARIABLE GUARD BANDS
    104.
    发明专利
    METHOD AND APPARATUS FOR ACHIEVING FLEXIBLE BANDWIDTH USING VARIABLE GUARD BANDS 未知

    公开(公告)号：CA2626807C

    公开(公告)日：2015-08-11

    申请号：CA2626807

    申请日：2006-10-27

    Applicant: QUALCOMM INC

    Inventor： KHANDEKAR AAMOD ,  PALANKI RAVI

    IPC: H04L27/26

    Abstract: Techniques to flexibly support different bandwidths in a wireless communication system are described. The system supports a configurable operating bandwidth using a fixed design bandwidth and variable guard bands. Values for various parameters such as fast Fourier transform (FFT) size, cyclic prefix length, and sample rate may be selected based on the design bandwidth. The design bandwidth may be associated with K total subcarriers. Different operating bandwidths may be supported by selecting different numbers of usable subcarriers. A transmitter and a receiver may perform processing for a transmission using the same FFT size, cyclic prefix length, and sample rate regardless of the selected operating bandwidth. The system may use different operating bandwidths and/or different parameter values (e.g., FFT sizes) for different portions of a transmission, e.g., a preamble and a main body of the transmission.

    METHOD AND APPARATUS FOR SILENCE INTERVALS IN WIRELESS COMMUNICATIONS
    106.
    发明专利
    METHOD AND APPARATUS FOR SILENCE INTERVALS IN WIRELESS COMMUNICATIONS 未知

    公开(公告)号：CA2665245C

    公开(公告)日：2014-12-09

    申请号：CA2665245

    申请日：2007-10-26

    Applicant: QUALCOMM INC

    Inventor： GOROKHOV ALEXEI ,  KHANDEKAR AAMOD ,  BHUSHAN NAGABHUSHANA SINDHUSHAYANA

    IPC: H04B7/005 ,  H04L12/28

    Abstract: Systems and methodologies are described that facilitate silence interval specification and utilization in wireless communications. In particular, a silence interval can be defined such that communications cease during the interval, defined by an interval period, offset within the interval period, and duration; the communication can be that of mobile devices to base stations in a wireless communication network. In this regard, base stations can measure thermal noise during the silence to set a interference over thermal (IoT) level in one example. Additionally, other systems and networks can use the silence intervals to transmit, such as public safety devices and/or peer-to-peer communication. The wireless mobile devices can receive the silence interval information and appropriately blank out communications during the defined period.

    METHOD AND APPARATUS FOR SUPPORTING HALF-DUPLEX TERMINALS IN AN ASYNCHRONOUS MODE
    109.
    发明专利
    METHOD AND APPARATUS FOR SUPPORTING HALF-DUPLEX TERMINALS IN AN ASYNCHRONOUS MODE 未知

    公开(公告)号：CA2662541C

    公开(公告)日：2014-07-15

    申请号：CA2662541

    申请日：2007-09-04

    Applicant: QUALCOMM INC

    Inventor： PALANKI RAVI ,  KHANDEKAR AAMOD ,  GOROKHOV ALEXEI

    IPC: H04B7/26

    Abstract: Systems and methodologies are described that provide support for signal acquisition in wireless communication systems that utilize half-duplex communication in the presence of asynchronous sectors. Forward link and reverse link superframes can be structured such that a given frame position in a superframe alternates between forward link communication and reverse link communication for a particular half-duplex interlace. More particularly, an odd number of frames can be grouped into respective forward link and reverse link superframes, from which frames can be assigned to a first half-duplex interlace and a second half-duplex interlace in an alternating fashion. By varying the communication link used by a half-duplex interlace at a given frame location, terminals operating on a single half-duplex interlace can detect asynchronously operating sectors irrespective of the transmission timeline of such sectors.

Patent Agency Ranking