Abstract:
PROBLEM TO BE SOLVED: To provide systems and methodologies that facilitate assigning resources for an anchor carrier and an additional carrier by use of a grant message.SOLUTION: The grant message communicated by use of an anchor carrier can include resource information for a plurality of carriers. Moreover, the systems and methodologies facilitate identifying control information for an anchor carrier and/or an additional carrier on the basis of an operating mode. The operating mode is a legacy mode or an extended mode. On the basis of the operating mode, particular resources associated with control regions are monitored for control information for each of anchor carrier(s) or additional carrier(s).
Abstract:
PROBLEM TO BE SOLVED: To provide a method for interference mitigation in a wireless communication system.SOLUTION: Blank subframe link design uses reduced bandwidth either explicit or derived for Closed Subscriber Group (CSG) cell interference mitigation, enabling a non-allowed User Equipment (UE) to co-exist with CSG cells on the same carrier. One could specify UL blank subframes to orthogonalize non-allowed UE and allowed UE transmissions on UL either via explicit UL blank subframe definition or derived from DL blank subframe definition. Scheduling can orthogonalize data transmissions. UE knowledge of RACH occasion is sufficient to start RACH and handover procedure.
Abstract:
PROBLEM TO BE SOLVED: To provide techniques for performing scrambling and descrambling.SOLUTION: Different scrambling sequences for different channels are generated based on different cyclic shifts of a base scrambling sequence generated by a linear feedback shift register, which is a maximal-length sequence. A scrambling sequence for a given channel is generated by (1) determining a sequence selector value based on at least one parameter for a channel type value and (2) cyclically shifting the base scrambling sequence based on the sequence selector value. In addition, a reference signal transferred on variable system bandwidth is generated with two scrambling sequences, which are different cyclic shifts of a base scrambling sequence. Scrambling/descrambling for positive and negative frequencies for the reference signal is performed with the first and second scrambling sequences, respectively.
Abstract:
PROBLEM TO BE SOLVED: To provide a system and a method for deriving a position estimate of a receiver from a plurality of parameter measurements.SOLUTION: Each measurement is derived from a correlation function, which in turn is derived by correlating a signal received at a receiver with an identification code uniquely identifying a transmitter visible to the receiver. A plurality of position estimates are derived, each from a different subset of the plurality of measurements. Based on local topography, one of the position estimates is selected as the best estimate of the position of the receiver.
Abstract:
PROBLEM TO BE SOLVED: To more efficiently derive eigenvectors used for spatial processing in MIMO systems. SOLUTION: The present invention relates to a method for deriving a matched filter matrix based on a steered reference. The method includes: acquiring a plurality of sets of received symbols regarding the steered reference received via a first link of MIMO and generated based on a plurality of steering vectors; deriving a matched filter matrix based on the plurality of sets of received symbols, a plurality of row vectors of the matched filter matrix including a plurality of eigenvectors. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To calculate the position of a pseudo range receiving device by using inaccurate information (e.g., the old Almanac and/or Ephemeris). SOLUTION: The pseudo range receiving device estimates a coarse position by using inaccurate information related to a position of a GPS satellite (e.g., the old Almanac and/or Ephemeris). The result of the estimated coarse position is sent to a position determination device along with the inaccurate information used for the position calculation, and corrections to the coarse position estimation of the pseudo range receiving device are made based upon an error present in the used inaccurate information. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide secondary synchronization encoding by utilizing a primary synchronization channel (P-SCH)-related scrambling code.SOLUTION: Scrambled secondary synchronization codes (SSCs) are assigned to multiple base stations of a radio access network (RAN). By way of example, PSC-based scrambling codes are created from a plurality of M-sequences generated from a common polynomial expression. Further, an SSC codebook is provided that selects sequence pairs of a sequence matrix for generating the SSCs. The selection is based on transmission characteristics of the resulting SSCs, providing reduced interference in planned, semi-planned and/or unplanned mobile deployments.
Abstract:
PROBLEM TO BE SOLVED: To provide secondary synchronization encoding with little interference by utilizing a primary synchronization channel (P-SCH)-related scrambling code.SOLUTION: A method comprises: generating a sequence matrix comprising M-sequences generated from one or more polynomial expressions (902); scrambling at least one M-sequence with a PSC scrambling code (904); generating an SSC on the basis of the scrambled M-sequence (906); and mapping the SSC onto sub-carriers of OFDM (908).
Abstract:
PROBLEM TO BE SOLVED: To provide closed loop and open loop power control techniques for each antenna of user equipment (UE).SOLUTION: An access point may measure signals received from each antenna of the user equipment, calculate a power adjustment parameter for each antenna of the UE, and transmit the parameters to the UE. The UE may use the adjustment parameters to determine a transmit power value for each antenna. In addition, the UE may measure a path loss for each antenna and update the transmit power per antenna on the basis of the path loss and other parameters.
Abstract:
PROBLEM TO BE SOLVED: To facilitate efficiently indicating parameter(s) associated with a base station utilizing synchronization signals in a wireless communication environment.SOLUTION: Relative locations of a PSC and an SSC in a radio frame can be a function of a parameter. A PSC sequence utilized to generate PSCs can be selected based upon a parameter. Inclusion or exclusion of PSCs from a radio frame can be a function of a parameter. Pseudo random sequence mappings (e.g., to cell IDs or tone locations) can be a function of a parameter. Parameters indicate whether the base station is part of a TDD or FDD system, whether the radio frame employs FS1 or FS2, whether the base station is associated with a macro or femto cell, or whether the base station is associated with a unicast or multicast system.