Methods for determining a LOB of one or more user equipment (UE) in a wireless system employing Time Difference of Arrival (TDOA) is described. TDOA techniques are based 051 estimating the difference in the arrival times of reference signals from multiple receivers or from multiple emitters to a receiver. A particular value of the time difference estimate defines a hyperbola between the two receivers on which the handset may exist When the distance between the receiving antennas is small relative to the distance of the emitter source (the handset) being located, then the TDOA is equivalent to the angle between the baseline of the sensors (receivers antennas) and the incident RF energy from the emitter. If the angle between the baseline and true North is known, then the line of bearing (LOB) and/ or angle of arrival (AoA), can be utilised to determine the location of the UE.

Multi-Path Mitigation in Rangefinding and Tracking Objects Using Reduced Attenuation RF Technology

This document discloses solutions for using a mix of reference signal types in a wireless communications network, e.g., a first type and a second type, in making positioning-related measurements. In one example, a UE uses a “mix” of CRS and PRS. As an example case, a UE receives PRS and, possibly, CRS from one or more cells, while it receives only CRS from one or more other cells. In this case, the UE determines, e.g., received signal timing values for CRS as received from some cells, on a per-cell basis, and for PRS as received from other cells, on a per-cell basis. The UE can measure and report on per-signal/per-cell basis and can perform calculations involving a mix of timing measurements made for both CRS and PRS. In a further aspect, reference signal transmissions are controlled or coordinated on a per-port basis in cells that use multiple antenna ports for transmitting within each such cell.

Methods and apparatus for positioning measurement in multi-antenna transmission systems

A method in a wireless communication terminal is disclosed. The method includes receiving a first signal including a desired second signal and an interference component, wherein the interference component includes at least a third signal transmitted in an Almost Blank Subframe (ABS) by a neighbor cell, and configuring the wireless communication terminal to employ interference reduction to process the first signal based on a configuration of the interference component.

Positioning Reference Signal Assistance Data Signaling for Enhanced Interference Coordination in a Wireless Communication Network

A method for reporting power headroom is disclosed. Power headroom may be reported across all carriers (wideband), for a specific carrier, or for a carrier group. The formula used to calculate the power headroom depends on whether the carrier (or a carrier in the carrier group) has a valid uplink grant. If the carrier or carrier group does not have a valid uplink grant, the power headroom may be calculated based on a reference grant. The power headroom is calculated by a wireless transmit/receive unit and is reported to an eNodeB.

Uplink power headroom reporting for carrier aggregation

Methods and apparatus for transmitting data between different peer-to-peer communication groups (104) are disclosed. A wireless device (102) determines (702) if it is simultaneously connected to a plurality of peer-to-peer communication groups (104) and instantiates (704) a bridge interface (404) at the wireless device (102) for communications between each peer-to-peer communication group (104). The wireless device (102) also determines (706) if it is simultaneously connected to at least one peer-to-peer communication device (102) and an access point (202). In such an instance, the wireless device (102) determines (708) if the access point (202) also includes a bridge interface (412). If the access point (202) does not include a bridge interface, the wireless device (102) runs (710) the bridge interface (404) at the wireless device (102) for communications between the at least one peer-to-peer communication device (102) and the access point (202). If the access point (202) does include a bridge interface (412), the wireless device (102) causes (712) the bridge interface (412) at the access point (202) to be instantiated for communications between the at least one peer-to-peer communication device (102) and the access point (202).

Methods and apparatus for transmitting data between different peer-to-peer communication groups

A wireless terminal receives signaling information, pertaining to a reference signal transmission in at least one specifically designated sub frame, the signaling information including a list, the list including base station identities The terminal determines, from at least one of the base station identities in the list, the time-frequency resources associated with a reference signal transmission intended for observed time difference of arrival (OTDOA) measurements from a transmitting base station associated with said one base station identity The time of arrival of a transmission from the transmitting base station, relative to reference timing, is measured The wireless terminal can receive a command from a serving cell to start performing inter-frequency OTDOA measurement on a frequency layer containing reference signals, the frequency layer distinct from the serving frequency layer, the serving frequency layer not containing positioning reference signals The wireless terminal can perform OTDOA measurements subsequent to the reception of the command on a carrier frequency different from the serving cell carrier frequency A base station transmitter can jointly schedule a reference signal transmission from a plurality of base station transmitters for the purpose of OTD estimation enhancement, and transmit identical reference signals from the plurality of base station transmitters, the reference signals being identical both in the signal sequence and time-frequency resources used for transmission

Interference control, sinr optimization and signaling enhancements to improve the performance of otdoa measurements

A wireless communication infrastructure entity including a transceiver coupled to a controller configured to generate parity bits based on scheduling grant information and to encode the parity bits based on additional scheduling grant information not used to generate the parity bits, wherein the encoded parity bits combined with the scheduling grant information. The additional scheduling grant information may be transport block size or redundancy version information.

Scheduling grant information signaling in wireless communication system

FIELD: radio engineering, communication.SUBSTANCE: invention relates to wireless communication. Disclosed is a method in a wireless communication device including receiving control signalling from a base station in a control region of a downlink carrier spanning the first bandwidth, receiving a signalling message from the base station indicating the second bandwidth, receiving the first control message within the control region using the first downlink control information (DCI) format size, the first DCI format size based on the first bandwidth, and receiving the second control message within the control region using the second DCI format size, the second DCI format size based on the second bandwidth, wherein the second bandwidth is different from the first bandwidth and the first and second control messages indicate downlink resource assignments for the downlink carrier.EFFECT: efficient control of HeNB in the entire available spectrum.11 cl, 7 dwg

Control and data transmission in heterogeneous wireless communication networks

A wireless communication infrastructure entity includes a transceiver coupled to a controller configured to generate parity bits based on scheduling grant information and to encode the parity bits based on additional scheduling grant information not used to generate the parity bits, wherein the encoded parity bits combined with the scheduling grant information. The additional scheduling grant information may be transport block size or redundancy version information.

Scheduling grant information signal transmission in wireless communication system

FIELD: wireless communication equipment.SUBSTANCE: invention relates to wireless communications and can be used to facilitate the assessment of a user's position in wireless networks. Method for scheduling the transmission of the reference signals of the observed arrival time difference (OTDOA) in the first base station includes receiving, by the first base station, system synchronization information of the second base station, transmitting to the second base station the system timing information of the first base station, scheduling the transmission of the OTDOA reference signals using the system timing information of the first base station and system timing information of the second base station, the transmission being scheduled such that the transmission of the OTDOA reference signals from the first and second base stations overlaps in time and the OTDOA reference signals from the first and second base stations are different, and signaling to the wireless terminal a measurement pattern, OTDOA reference signals from the first and second base stations.EFFECT: technical result is the optimization of signal quality.9 cl, 7 dwg

Nimbalker Adzhit

Papers

Interference control, sinr optimization and signaling enhancements to improve the performance of otdoa measurements

Scheduling grant information signaling in wireless communication system

Control and data transmission in heterogeneous wireless communication networks

Scheduling grant information signal transmission in wireless communication system

Control of interference, optimization of sinr and improvement of signaling to improve otdoa measurement performance