Abstract:
PROBLEM TO BE SOLVED: To provide a global navigation satellite system (GNSS), which can determine a position location for a mobile station based on satellite signals sent from two or more satellite systems, rather than just one satellite system.SOLUTION: A first and a second navigation satellite system (NSS) operate according to a first and a second specification, respectively. First and second plural SVs (satellite vehicles) are identified by first and second plural unique corresponding identifications (IDs), respectively. A processor receives and identifies first plural corresponding signals transmitted from the first plural SVs in response to the first plural unique corresponding IDs. The processor receives and identifies a second plural corresponding signals transmitted from the second plural SVs in response to the second plural unique corresponding IDs. The processor determines position location information in response to receiving and identifying the first plural corresponding signals and the second plural corresponding signals.
Abstract:
PROBLEM TO BE SOLVED: To provide a preamble configuration in wireless communication systems (e.g., UHDR-DO type systems).SOLUTION: An embodiment comprises receiving a plurality of information bits for a preamble, grouping the plurality of information bits into a first group and a second group, generating a plurality of code words from the first group using Reed-Solomon encoding which determine tone locations within tone groups in the frequency and time domain, and mapping an encoded version of the second group onto the determined tone locations.
Abstract:
PROBLEM TO BE SOLVED: To provide an HSDPA system with reduced inter-user interference. SOLUTION: In a wireless network (100) using user equipment devices (130) corresponding to HSDPA, a base transceiver station (120) transmits to each UE corresponding to HSDPA information regarding allocation of HSDPA codes and associated modulation techniques for other UEs corresponding to HSPDA. Using this additional control information, each UE configures a decision feedback filter of its equalizer to reduce inter-user interference. The additional control information may be transmitted in a packet (300) that includes a CRC portion (310) with the packet's CRC masked by a common ID, which is known to the UE corresponding to HSDPA. To reduce the number of bits needed to transmit the additional control information, the HSDPA codes used with a particular modulation technique are allocated consecutively. For each modulation technique, only the beginning code and the total number of codes need be known to the UE. The number of codes used with each modulation technique may be allowed to change once in several TTIs. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a system and method for acquiring signal acquisition assistance data. SOLUTION: The signal acquisition assistance data is acquired for receiving devices, such as wireless position assisted location devices seeking signals from any source, such as satellite vehicles and base stations. The data may be acquired from previously acquired data, based on evaluation of changes in parameters, such as time and location that may jeopardize validity. Refined data may be calculated by a receiver using partial measurements of signal sets, particularly if the acquisition assistance data provided by a remote entity includes more distinct parameters than have typically been provided. New data need not be acquired until the validity of previous data expires due to limitations upon temporal extrapolation using Doppler coefficients, unless mobile station movement that cannot be compensated is detected, and jeopardizes validity of the previous data. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method and an apparatus for reducing crosstalk between channels in acknowledging reverse link transmission in a communication system. SOLUTION: The method for reducing the crosstalk between the channels includes steps for: generating a set of code words corresponding to a first channel for acknowledging transmission based on a first matrix that is a binary quadrature matrix; forming the first matrix where the first matrix is a permuted H12 matrix interleaved with a base vector of the fast Fourier transform of a specific length; and using a second matrix smaller than the first matrix to perform spreading using a spreading function. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To allocate a sequence resource through randomization that is operable upon a wireless communication device.SOLUTION: Different sequence resources can be allocated to a mobile device where the mobile device can exclusively use the sequence resource with regard to a base station during a communication session. However, if another mobile device using another base station is assigned a matching sequence resource, then there can be interference if the mobile devices are relatively close enough together. Therefore, randomization of the sequence resources can take place, moreover, a cyclic shift result is employed in sequence resource allocation to attempt to minimize interference.
Abstract:
PROBLEM TO BE SOLVED: To provide systems and methods that facilitate signaling and detecting discontinuous transmission (DTX) in a wireless communication environment.SOLUTION: A DTX indicator and channel quality indicator (CQI) feedback can be multiplexed within a common uplink control channel subframe and transmitted to a base station when an access terminal is operating in a DTX mode for an acknowledgement channel. Further, when operating in a non-DTX mode, the access terminal can multiplex an ACK indicator or a NAK indicator with the CQI feedback within a common uplink control channel subframe, which can thereafter be transferred to the base station. Accordingly, the base station can detect DTX operation or non-DTX operation of the access terminal.
Abstract:
PROBLEM TO BE SOLVED: To provide apparatus and methods for interference mitigation in wireless communication networks.SOLUTION: A method comprises: receiving, from a macrocell node, a first plurality of subcarrier signals; receiving, from the macrocell node, a second plurality of subcarrier signals, where the second plurality of subcarriers are comprised within a bandwidth shared with a femtocell node; and weighting a first plurality of modulation symbols carried by the first plurality of subcarrier signals differently than a second plurality of modulation symbols carried by the second plurality of subcarrier signals.
Abstract:
PROBLEM TO BE SOLVED: To provide apparatus and methods for interference mitigation in wireless communication networks.SOLUTION: A method comprises: determining, at a femtocell node, a predefined signal transmitted by a macrocell node; and adjusting, in response to the determination of the predefined signal, bandwidth of a signal transmitted by the femtocell node. The adjustment comprises limiting transmission from the femtocell node to a subset of a plurality of subcarriers comprised within a first carrier bandwidth.
Abstract:
PROBLEM TO BE SOLVED: To compute and report channel quality indication (CQI).SOLUTION: CQI may then be computed and reported in accordance with the selected CQI computation method. In an exemplary design, user equipment (UE) may obtain a selected method for computing CQI, which may be chosen based on the UE capability and/or other factors. The selected method may specify (i) CQI computation for a specific codeword among a plurality of codewords or (ii) CQI computation by averaging signal quality across a plurality of layers used for transmission. The UE may compute CQI in accordance with the selected method, send the CQI to a base station, and receive data sent by the base station on the basis of the CQI.