Abstract:
PROBLEM TO BE SOLVED: To communicate information in a guard bandwidth.SOLUTION: To open new channels upon which information can be transmitted, a guard bandwidth is used to reduce leakage into neighboring bandwidth ranges and minimize interference. The used guard bandwidth is used in a range where low interference to neighboring bands can be retained. To add a bandwidth, by communicating a larger guard bandwidth than necessary to legacy devices, a guard bandwidth is additionally created and used to transmit new channels, allowing high power base stations to use the guard bandwidth.
Abstract:
PROBLEM TO BE SOLVED: To provide systems and methodologies that facilitate utilizing different power control algorithms as a function of access terminal speed.SOLUTION: Instantaneous channel quality indicator (CQI) reports can be inverted for slow moving access terminals while long-term geometry inversion (e.g., average CQI report inversion) can be utilized for quick moving access terminals. Speed of the access terminal can be estimated upon the basis of time correlation of CQI values. Further, selection of implementing instantaneous CQI inversion or long-term geometry inversion can be based upon the estimated speed of the access terminal.
Abstract:
PROBLEM TO BE SOLVED: To provide techniques for transmitting overload indicators over the air to UEs in neighbor cells.SOLUTION: In one design, an overload indicator may be transmitted as a phase difference between at least one synchronization signal and a reference signal for a cell. In another design, an overload indicator may be transmitted as a phase difference between consecutive transmissions of at least one synchronization signal for a cell. In yet another design, an overload indicator may be transmitted by a cell on resources reserved for transmitting the overload indicator. In yet another design, an overload indicator may be transmitted by a cell on a low reuse channel or a broadcast channel. For all designs, a UE may receive overload indicators from neighbor cells, determine the loading of each neighbor cell on the basis of the overload indicator for that cell, and control its operation on the basis of the loading of the neighbor cells.
Abstract:
PROBLEM TO BE SOLVED: To support multiple wireless access technologies at a common terrestrial radio access network.SOLUTION: Wireless resources can be reserved in a manner that enables transmission of control and reference signals to advanced or emerging-technology user terminals (e.g., LTE-A), while mitigating adverse effects on legacy user terminals (e.g., LTE Release 8). Therefore, information designated for LTE-A terminals can be embedded in predetermined reserved locations, which exploit known standardized behavior of legacy terminals in expecting information at specific locations. Such a reservation of resources can be made typically without affecting the legacy terminals, and thus performance degradation of legacy terminals can be mitigated or avoided.
Abstract:
PROBLEM TO BE SOLVED: To provide techniques for transmitting overload indicators over the air to UEs in neighbor cells.SOLUTION: In one design, an overload indicator may be transmitted as a phase difference between at least one synchronization signal and a reference signal for a cell. In another design, an overload indicator may be transmitted as a phase difference between consecutive transmissions of at least one synchronization signal for a cell. In yet another design, an overload indicator may be transmitted by a cell on resources reserved for transmitting the overload indicator. In yet another design, an overload indicator may be transmitted by a cell on a low reuse channel or a broadcast channel. For all designs, a UE may receive overload indicators from neighbor cells, determine the loading of each neighbor cell on the basis of the overload indicator for that cell, and control its operation on the basis of the loading of the neighbor cells.
Abstract:
PROBLEM TO BE SOLVED: To provide techniques for transmitting overload indicators over the air to UEs in neighbor cells.SOLUTION: In one design, an overload indicator may be transmitted as a phase difference between at least one synchronization signal and a reference signal for a cell. In another design, an overload indicator may be transmitted as a phase difference between consecutive transmissions of at least one synchronization signal for a cell. In yet another design, an overload indicator may be transmitted by a cell on resources reserved for transmitting the overload indicator. In yet another design, an overload indicator may be transmitted by a cell on a low reuse channel or a broadcast channel. For all designs, a UE may receive overload indicators from neighbor cells, determine the loading of each neighbor cell on the basis of the overload indicator for that cell, and control its operation on the basis of the loading of the neighbor cells.
Abstract:
PROBLEM TO BE SOLVED: To provide a system that facilitates improved resource partitioning and interference management in a wireless communication system.SOLUTION: Techniques are described herein for the transmission of various types of signaling, such as Access Request commands, Reverse Link Special Resource Utilization Message (R-SRUM) signaling, and Forward Link Special Resource Utilization Message (F-SRUM) signaling, for managing interference associated with range extension, restricted association networks, and other jamming scenarios. Downlink resource coordination and interference management are accomplished through the use of Access Request or R-SRUM signaling conducted in a unicast or broadcast fashion, and uplink resource coordination and interference management are accomplished through the use of F-SRUM signaling. A clean communication channel such as a Low Reuse Preamble (LRP) channel can be utilized for interference management signaling.
Abstract:
PROBLEM TO BE SOLVED: To provide a technique for mitigating interference due to a reference signal, or a technique for mitigating interference to the reference signal, in a heterogeneous network.SOLUTION: Interference due to a first reference signal from a first station (for example, a base station) may be mitigated by canceling the interference at a second station (for example, UE) or by selecting a plurality of different resources for sending a second reference signal by the second station (for example, another base station) to avoid collision with the first reference signal. In another aspect, a relay can transmit in an MBSFN mode in a plurality of subframes in which it listens to a macro base station, and transmit in a regular mode in a plurality of subframes in which it transmits to a plurality of pieces of UE.
Abstract:
PROBLEM TO BE SOLVED: To provide a system and method that facilitates improved resource partitioning and interference management in a wireless communication system.SOLUTION: Techniques are described herein for transmission and use of various types of signaling, such as Access Request commands, R-SRUM signaling and F-SRUM signaling, for managing interference associated with range extension, restricted association networks, and other jamming scenarios. Downlink resource coordination and interference management are accomplished through the use of Access Request or R-SRUM signaling conducted in a unicast or broadcast fashion, and uplink resource coordination and interference management are accomplished through the use of F-SRUM signaling. A Low Reuse Preamble (LRP) channel can be utilized for interference management signaling and/or for determining timing of various signaling messages.