Patent application number | Description | Published |
20080232321 | Techniques for improved error detection in a wireless communication system - In one exemplary embodiment of the invention, a method including: determining whether first allocation information has been transmitted from a first device towards a second device in a wireless communication system; and transmitting a message including transmittal information and second allocation information from the first device towards the second device, wherein the transmittal information corresponds to the determined transmittal of the first allocation information. In another exemplary embodiment of the invention, a method including: detecting whether a first signal is received on a dedicated resource of a wireless communication system; detecting whether a second signal is received on a shared resource of the wireless communication system; and determining, based on a detection outcome for the first signal and a detection outcome for the second signal, whether at least one allocation has failed. | 09-25-2008 |
20080240269 | METHOD AND APPARATUS FOR MULITPLEXING CONTROL AND DATA CHANNEL - An approach is provided for performing control signaling. Data and control information are received. The control information is orthogonalized using block-level spreading. The data and the orthogonalized control information are multiplexed at a symbol-level. | 10-02-2008 |
20080298433 | Coordinated cyclic shift and sequence hopping for Zadoff-Chu, modified Zadoff-Chu, and block-wise spreading sequences - A cyclic shift of a reference signal is quantized as a combination of a cell specific cyclic shift with an outcome of a pseudo-random hopping, and an indication of the cell specific cyclic shift is broadcast in the cell. In one embodiment the cyclic shift is quantized as a modulo operation on a sum of the cell specific cyclic shift, the outcome of the pseudo-random hopping, and a user specific cyclic shift, in which case an indication of the user specific cyclic shift is sent in an uplink resource allocation and a user sends its cyclically shifted reference signal in the uplink resource allocated by the uplink resource allocation. The cyclic shift may also be quantized according to length of the reference signal as cyclic_shift_symbol=(cyclic_shift_value*length of the reference signal)/12; where cyclic_shift_value is between zero and eleven and cyclic_shift_symbol is the amount of cyclic shift given in reference signal symbols. | 12-04-2008 |
20080310540 | Signaling of implicit ACK/NACK resources - A method includes, in response to receiving implicit signaling of the radio resource, and in response to a plurality of wireless communication system cell-specific static and semi-static input parameters, determining a plurality of output parameters and allocating radio resources using the determined output parameters. Also disclosed are computer readable storage mediums for storing programs that operate in accordance with the methods, as well as various devices that operate in accordance with the methods and that include the computer readable storage mediums. | 12-18-2008 |
20080310547 | Multi-code precoding for sequence modulation - In accordance with an exemplary embodiment of the invention a method is provided to reduce a peak to average ratio with a multi-code transmission. The method includes precoding a plurality of symbols, modulating the precoded plurality of symbols using multi-codes including a plurality of orthogonal codes, and transmitting a signal comprising the modulated precoded plurality of symbols, where precoding is performed to reduce the peak to average ratio of the transmitted signal. | 12-18-2008 |
20080318528 | Low par zero auto-correlation zone sequences for code sequence modulation - In one non-limiting exemplary embodiment, a method includes: randomly selecting a set of sequences with each sequence having sequence elements, each sequence element having a frequency selected from constellation points on a unit circle in a complex plane, where the selected set of sequences is a candidate set of sequences; calculating a first cubic metric for each sequence of the candidate set of sequences, where the first cubic metric is for single code modulation; and in response to the first cubic metric being larger than at least one threshold, removing the corresponding sequence from the candidate set of sequences to obtain at least one saved sequence. | 12-25-2008 |
20090010364 | Parameter estimation for adaptive antenna system - There is proposed a technique for determining parameters, especially channel estimation, in the receiver of a communication system utilizing adaptive antenna techniques. The technique uses information transmitted in the antenna signals and in the beam signals to determine the parameters. | 01-08-2009 |
20090033524 | Adaptive transport format uplink signaling for data-non-associated feedback control signals - One or more dynamically selected signaling bits are added in a downlink from a base station to user equipment (UE) so that the UE can use an adaptive “symbol space” for uplink feedback (CQI/HARQ) signaling and know from the extra added downlink signaling bits and the MCS currently signaled in parallel how big a symbol space to use at the moment for the uplink feedback. | 02-05-2009 |
20090181687 | Sounding reference signal arrangement - A method, apparatus, and computer program embodied on a computer-readable medium to create an uplink message to be transmitted to a base station, the created uplink message comprises a sounding reference signal based on accessed data. An uplink scheduling grant signal is received via downlink, from the base station, in response to the transmission of the uplink message. An uplink data transmission is transmitted to the base station responsive to the received uplink scheduling grant signal. | 07-16-2009 |
20090219897 | DTX detection when ACK/NACK is transmitted with scheduling request - A method for signaling between a mobile apparatus ( | 09-03-2009 |
20090232067 | ACK/NACK channelization for resource blocks containing both ACK/NACK and CQI - In one exemplary embodiment, a method includes: transmitting a value from an access node towards an apparatus, where the value is indicative of a size of a first portion of an uplink resource block, where the uplink resource block is shared among a plurality of apparatus, where the first portion is specified for transmission of a first type of signaling to the access node, where a second portion of the uplink resource block is specified for transmission of a second type of signaling to the access node; and receiving at least one transmission using at least one of the first portion and the second portion. | 09-17-2009 |
20090238241 | Frequency hopping pattern and arrangment for sounding reference signal - A method, an apparatus, and a computer program that includes forming frequency hopping position of the sounding reference signal is based on a hopping pattern. The hopping pattern of the sounding reference signal is configured to utilize a tree assignment for a frequency allocation of the sounding reference signal and to support at least one frequency band branch per layer. The hopping pattern of the sounding reference signal is also configured to provide consecutive sounding reference signals on widely separated frequency allocations. | 09-24-2009 |
20090268844 | Method and apparatus to link modulating and coding scheme to amount of resources - A plurality of substantially static input parameters are provided, and a plurality of signalled input parameters are also provided. From the substantially static input parameters and the plurality of signaled input parameters, an output parameter is determined that is indicative of a number of control symbols per transmission time interval for an amount of control signaling bits. The output parameter relates to a modulation and coding scheme for an uplink. | 10-29-2009 |
20090303978 | Method, apparatus and computer program for open loop transmission diversity - A symbol multiplied by a first constant amplitude zero autocorrelation code CAZAC reference signal RS is transmitted in a timeslot from a first antenna of a user equipment on a first physical uplink control channel in a manner that multiplexes with other user equipments. A symbol multiplied by a second CAZAC RS is transmitted in the timeslot from a second antenna of the user equipment on a second physical uplink control channel in a manner that multiplexes with other user equipments. The first and second CAZAC RSs are orthogonal to one another by at least one of the cyclic shifts or a cover code applied to at least one of the first and the second CAZAC RSs. The symbols may be the same or different, and may represent an ACK, a NACK, or a scheduling request indicator. These teachings extend to more than two transmit antennas. | 12-10-2009 |
20100067472 | Backward compatible physical uplink control channel resource mapping - A method for uplink signaling is described. The method includes determining one or more macro-configuration parameters. The one or more macro-configuration parameters define a resource allocation mapping for a control channel. A set of parameters including one or more micro-configuration parameters and the one or more macro-configuration parameters are generated. A transmission of the set of parameters to one or more user equipment is caused to be sent. Apparatus and computer readable media are also described. | 03-18-2010 |
20100110878 | METHOD AND APPARATUS FOR PROVIDING CONTROL SIGNALING - An approach is provided for an efficient control signaling associated with an error control scheme. A determination is made whether data has been properly received according to an error control scheme. A first pilot sequence representing an acknowledgement is generated if the data is properly received. A second pilot sequence representing a negative acknowledgement is generated if the data is not properly received. A frame including either the first pilot sequence or the second pilot sequence is output. | 05-06-2010 |
20100173640 | Single User Multiple Input Multiple Output User Equipment - In accordance with the exemplary embodiments of the invention there is at least a method, apparatus, and a computer program to perform operations including receiving information descriptive of a type of radio access which a user equipment is acting on, and in response to receiving the information descriptive of a particular type of radio access, transmitting from a multiple transmit antenna user equipment so that the transmission appears, at a receiver, to have been made by a single antenna user equipment, or by a user equipment that supports antenna switching/selection. | 07-08-2010 |
20100220664 | Apparatus, Methods, and Computer Program Products Providing Limited Use of Zadoff-Chu Sequences in Pilot or Preamble Signals - In one, non-limiting exemplary embodiment, a method includes: obtaining a timing uncertainty window parameter; and selecting, using the obtained timing uncertainty window parameter, a preamble sequence including a cyclic shift of a Zadoff-Chu root sequence, wherein the cyclic shift is an allowed cyclic shift from a group of allowed cyclic shifts, wherein the allowed cyclic shifts have timing uncertainty windows with timing uncertainty window elements, wherein the timing uncertainty windows of the allowed cyclic shifts do not overlap with one other or with frequency cyclic shifts of +1 or −1 of the timing uncertainty window elements, and wherein the frequency cyclic shift of −1 of the timing uncertainty window elements of the allowed cyclic shifts does not overlap with the frequency cyclic shift of +1 of the timing uncertainty window elements of other allowed cyclic shifts. | 09-02-2010 |
20110077015 | Methods, Computer Program Products And Apparatus Providing Shared Spectrum Allocation - In one exemplary embodiment, a method includes: estimating network load for at least one region of a network using a load measurement method ( | 03-31-2011 |
20110103317 | METHOD AND APPARATUS FOR SYNCHRONIZING RESOURCES FOR COORDINATED NETWORK DEPLOYMENT - In accordance with an example embodiment of the present invention, a method comprises mapping a first transmission channel to an existing channel of a network element; switching the network element to a secondary communication mode which is one of a secondary transmission mode and a secondary receiving mode; signaling at least one neighbor network element in the secondary communication mode to associate the network element with the at least one neighbor network element; and receiving a first signal on the mapped first transmission channel from the at least one associated network element. | 05-05-2011 |
20110211569 | METHOD, APPARATUSES AND COMPUTER PROGRAM PRODUCTS FOR TRANSMISSION DIVERSITY - The invention is related to an apparatus comprising: a grouper configured to group antennas into antenna groups, if more antennas suitable for transmission are provided than pilot resources per a time slot; a rotator configured to rotate selected symbols with antenna-specific or antenna group-specific, and/or data symbol-specific phases; a transmitter configured to transmit symbols using a first antenna or antenna group of a user device and the rotated symbols using at least one second antenna or antenna group of the user device. | 09-01-2011 |
20120026967 | SIGNALLING - A network element may provide a plurality of user equipments with a dedicated pilot sequence for uplink reference signal transmission. A user equipment may, after receipt of a dedicated pilot sequence, spread the pilot sequences using a block spreading method. | 02-02-2012 |
20120093097 | OPTIMIZED UPLINK CONTROL SIGNALING FOR EXTENDED BANDWIDTH - According to an embodiment a user equipment UE transmits uplink control signals using one or more chunks of uplink frequency spectrum that contain a simultaneous uplink shared channel; and for the case where there is no simultaneous uplink shared channel available, the UE transmits uplink control signals using only a single chunk of uplink frequency spectrum. In various embodiments the control signals are ACK/NACK control signals transmitted on an uplink control channel, the uplink shared channel comprises a chunk-specific uplink control channel, and each chunk comprises a component carrier of a LTE-A system. Downlink assignment index bits may be included in a downlink grant to the UE which indicates how many chunks in total are allocated in a current downlink subframe. The UE can also use ACK/NACK control signal bundling over chunks in addition to either or both of chunk- specific ACK/NACK control signals or ACK/NAK control signal multiplexing. | 04-19-2012 |
20120106482 | METHOD AND APPARATUS FOR MULTIPLEXING CONTROL AND DATA CHANNEL - An approach is provided for performing control signaling. Data and control information are received. The control information is orthogonalized using block-level spreading. The data and the orthogonalized control information are multiplexed at a symbol-level. | 05-03-2012 |
20120201275 | Coordinated Cyclic Shift and Sequence Hopping for Zadoff-Chu, Modified Zadoff-Chu, and Block-Wise Spreading Sequences - A reference signal cyclic shift (CS) is quantized as a combination of a cell specific CS with an outcome of a pseudo-random hopping, and an indication of the cell specific CS is broadcast in the cell. In one embodiment the CS is quantized as a modulo operation on a sum of the cell specific CS, the outcome of the pseudo-random hopping, and a user specific CS, in which case an indication of the user specific CS is sent in an uplink resource allocation and a user sends its cyclically shifted reference signal in the uplink resource allocated by the uplink resource allocation. The CS may also be quantized according to length of the reference signal as cyclic_shift_symbol=(cyclic_shift_value*length of the reference signal)/12; where cyclic_shift_value is between zero and eleven and cyclic_shift_symbol is the amount of CS given in reference signal symbols. | 08-09-2012 |
20130336178 | TDD Data Transmission on Multiple Carriers with Sub Frames Reserved for Predetermined Transmission Directions - Apparatus and method for communication are provided. The apparatus includes a controller for controlling the transmission and reception of data on one or more carriers utilizing Time Division Duplexing and frames including sub frames, where multiple carriers utilized by different apparatuses are synchronized with each other and a predetermined number of sub frames of each frame are reserved for predetermined transmission directions and a scheduler for allocating the rest of the sub frames carrier specifically either in downlink or uplink direction. | 12-19-2013 |
20150023332 | METHOD AND APPARATUS FOR MULTIPLEXING CONTROL AND DATA CHANNEL - An approach is provided for performing control signaling. Data and control information are received. The control information is orthogonalized using block-level spreading. The data and the orthogonalized control information are multiplexed at a symbol-level. | 01-22-2015 |