Patent application number | Description | Published |
20110117926 | Network-based positioning mechanism and reference signal design in OFDMA systems - A network-based positioning mechanism is proposed. A serving BS first allocates radio resource to a target UE for network-based positioning in a wireless communication system. The target UE then transmits a positioning reference signal (PRS) to the serving BS and a plurality of cooperative BSs at the same time instant. All the cooperative BSs then conduct PRS detection and TOA measurements. Finally, the serving BS conducts positioning estimation based on the TOA measurement results. In one novel aspect, only one PRS transmission is required in one positioning opportunity for one positioning result. Candidates of PRS are selected with respect to different scenarios and allocated in a PRS resource region. Multiple positioning opportunities and multiple reference signals may be multiplexed over time, frequency or code domain in the PRS resource region. In one embodiment, the PRS is configured in such a way that both radio resource consumption and interference is minimized. | 05-19-2011 |
20110310830 | Method for Coordinating Transmissions Between Different Communications Apparatuses and Communication Sapparatuses Utilizing the Same - A communication apparatus is provided. A controller module generates a suggested sub-frame pattern describing suggested arrangement of one or more almost blank sub-frame(s) in one or more frame(s) and schedules control signal and/or data transmissions according to the suggested sub-frame pattern. A radio frequency module transmits at least a first signal carrying information regarding the suggested sub-frame pattern to a peer communications apparatus. The peer communications apparatus does not schedule data transmissions in the almost blank sub-frame(s). | 12-22-2011 |
20120082043 | Indication of user equipment transmit power capacilty in carrier aggregation - A method of power headroom reporting (PHR) is proposed. A UE is configured with a plurality of component carriers (CCs) and is served by one or more power amplifiers (PAs) in a wireless system with carrier aggregation. The UE determines transmit power limitation (TPL) information that comprises a set of TPL values, each TPL value corresponds to a UE-configured maximum transmit power for UE-level, PA-level, and CC-level. The TPL information is then reduced to non-redundant TPL values. Based on the non-redundant TPL values, the UE determines power headroom (PH) information that comprises a set of PH values. Each PH value equals to a TPL value subtracted by a UE-calculated transmit power. The UE reports the PH information to a base station via a fixed-length or variable-length MAC CE at each PHR reporting instance. | 04-05-2012 |
20120120846 | METHODS FOR CONFIGURING CHANNEL STATE INFORMATION MEASUREMENT IN A COMMUNICATIONS SYSTEM AND COMMUNICATIONS APPARATUSES UTILIZING THE SAME - A communications apparatus is provided. A controller determines two different sub-frame subsets for configuring a peer communications apparatus to perform channel state information measurement according to time-domain variation of a level of interference of the peer communications apparatus obtained from one or more previous measurement result(s). A transceiver transmits a configuration message carrying information regarding the two sub-frame subsets to the peer communications apparatus and receives one or more measurement result reporting message(s) carrying information regarding the measurement result(s) from the peer communications apparatus. | 05-17-2012 |
20120176925 | METHOD FOR DETERMINING AN INSTANCE FOR PERFORMING A CHANNEL STATE INFORMATION MEASUREMENT AND COMMUNICATIONS APPARATUSES UTILIZING THE SAME - A communications apparatus is provided. A processor is coupled to a transceiver, and at least comprises a first processor logic unit for performing a channel state information measurement at the sub-frame(s) comprised in a first sub-frame subset configured by a peer communications apparatus to obtain a first measurement result, a second processor logic unit for performing a second channel state information measurement at the sub-frame(s) comprised in a second sub-frame subset configured by the peer communications apparatus to obtain a second measurement result, a third processor logic unit for reporting the first measurement result and the second measurement result to the peer communications apparatus via the transceiver at one or more reporting instances. The reporting instances are determined based on a plurality of reporting parameters, and the reporting parameters are respectively configured for the first sub-frame subset and second sub-frame subset by the peer communications apparatus. | 07-12-2012 |
20120177006 | Obtaining System Frame Number of Target Cell During Handover - A method of obtaining system frame number for handover is provided. A UE receives a handover command from a serving base station in a serving cell. The UE performs downlink synchronization with a target base station. Upon synchronization, the UE determines a radio frame boundary of a target cell. The UE then obtains a system frame number of the target cell based on the radio frame boundary. The UE performs a handover procedure with the target cell by transmitting a RACH preamble to the target base station. The RACH preamble is transmitted over a PRACH resource determined from the system frame number without reading SFN information from a PBCH/BCH broadcasted from the target base station. Finally, the UE establishes data connection with the target base station. Handover interruption time is reduced by obtaining SFN before PBCH reading and decoding. | 07-12-2012 |
20140334329 | METHOD FOR DETERMINING AN INSTANCE FOR PERFORMING A CHANNEL STATE INFORMATION MEASUREMENT AND COMMUNICATIONS APPARATUSES UTILIZING THE SAME - A communications apparatus is provided. In one implementation, the apparatus includes a processor, coupled to a transceiver. The transceiver receives one or more configuration messages carrying information regarding to a first sub-frame subset, a second sub-frame subset and a plurality of reporting parameters from a peer communications apparatus. The processor further includes a first processor logic unit, for obtaining the information regarding at least the first sub-frame subset, the second sub-frame subset and the reporting parameters configured by the peer communications apparatus, a second processor logic unit, for determining at least one reporting instance according to the reporting parameters for reporting a measurement result linked to the first sub-frame subset; and a third processor logic unit, for determining a measuring instance for measuring the power of a desired signal corresponding to the first sub-frame subset based on the reporting instance. | 11-13-2014 |
20150029891 | METHODS FOR CONFIGURING CHANNEL STATE INFORMATION MEASUREMENT IN A COMMUNICATIONS SYSTEM AND COMMUNICATIONS APPARATUS UTILIZING THE SAME - A communications apparatus is provided. A controller determines two different sub-frame subsets for configuring a peer communications apparatus to perform channel state information measurement according to time-domain variation of a level of interference of the peer communications apparatus obtained from one or more previous measurement result(s). A transceiver transmits a configuration message carrying information regarding the two sub-frame subsets to the peer communications apparatus and receives one or more measurement result reporting message(s) carrying information regarding the measurement result(s) from the peer communications apparatus. | 01-29-2015 |
20150029991 | METHOD FOR COORDINATING TRANSMISSIONS BETWEEN DIFFERENT COMMUNICATIONS APPARATUSES AND COMMUNICATION SAPPARATUSES UTILIZING THE SAME - A communications apparatus is provided. A controller module generates a suggested sub-frame pattern describing suggested arrangement of one or more almost blank sub-frame(s) in one or more frame(s) and schedules control signal and/or data transmissions according to the suggested sub-frame pattern. A transceiver module transmits at least a first signal carrying information regarding the suggested sub-frame pattern to a peer communications apparatus. The peer communications apparatus does not schedule data transmissions in the almost blank sub-frame(s). | 01-29-2015 |
20150029992 | METHOD FOR COORDINATING TRANSMISSIONS BETWEEN DIFFERENT COMMUNICATIONS APPARATUSES AND COMMUNICATION SAPPARATUSES UTILIZING THE SAME - A method for coordinating transmissions between different communications apparatuses in a communications system. The method obtains a sub-frame indicator carried in a first control signal transmitted in a control region of a first sub-frame received from an evolved node B (eNB), wherein the sub-frame indicator indicates resource allocation of one or more sub-frame following the first sub-frame. The method then determines whether a second sub-frame following the first sub-frame and received from the eNB is an almost blank sub-frame according to the sub-frame indicator. When the second sub-frame is not the almost blank sub-frame, obtaining information regarding a start position of a data region of the second sub-frame from a second control signal transmitted in a control region of the second sub-frame. | 01-29-2015 |
20150029993 | METHOD FOR COORDINATING TRANSMISSIONS BETWEEN DIFFERENT COMMUNICATIONS APPARATUSES AND COMMUNICATION SAPPARATUSES UTILIZING THE SAME - A communications apparatus is provided. A controller module obtains information regarding a Hybrid Automatic Repeat Request (HARQ) round trip time (RTT) in an HARQ process, arranging one or more almost blank sub-frame(s) in one or more frame(s) according to the HARQ RTT information and generating a sub-frame pattern describing the arrangement of the almost blank sub-frame(s), wherein the HARQ RTT is defined by the communications system. A transceiver module transmits at least a signal carrying information regarding the sub-frame pattern to a peer communications apparatus in the communications system. In addition, at least one almost blank sub-frame in the sub-frame pattern is arranged in a sub-frame for the peer communications apparatus to transmit an uplink grant message for granting an user equipment to transmit uplink data to the peer communications apparatus. | 01-29-2015 |