Abstract:
PROBLEM TO BE SOLVED: To provide systems and methods that facilitate providing high reuse for transmitting reference signals, such as positioning reference signals (PRS) and cell-specific reference signals (CRS), to improve audibility thereof for applications such as trilateration and/or the like.SOLUTION: PRSs can be transmitted in designated or selected positioning subframes. Resource elements within the positioning subframe can be selected for transmitting the PRSs and can avoid conflict with designated control regions, resource elements used for transmitting cell-specific reference signals, and/or the like. Resource elements for transmitting PRSs can be selected according to a planned or pseudo-random reuse scheme. In addition, a transmit diversity scheme can be applied to the PRSs to minimize impact of introducing the PRSs to legacy devices. Moreover, portions of a subframe not designated for PRS transmission can be utilized for user plane data transmission.
Abstract:
PROBLEM TO BE SOLVED: To provide a method which makes it possible to communicate retransmission feedback related to multicarrier resource assignments.SOLUTION: The method makes it possible to indicate feedback parameters for a plurality of single carrier assignments, multicarrier assignments and the like according to single carrier-frequency division multiple access (SC-FDMA), relaxed SC-FDMA, etc. Feedback in relaxed SC-FDMA can be bundled by a mobile device to conserve power. In addition, a downlink assignment indicator (DAI) can be utilized to detect and indicate lost grants.
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 method of sending grant information to mobile devices having single carrier capabilities and/or mobile devices having multicarrier capabilities in a multicarrier wireless communication system.SOLUTION: A method for transmitting grant information comprises: determining grant information including at least resource information to be used; identifying a control region to communicate the grant information as a function of user device capabilities; inserting the grant information in the identified control region; and transmitting the grant information in the identified control region. The grant information can be sent in a legacy control region and/or a non-legacy control region.
Abstract:
PROBLEM TO BE SOLVED: To provide systems and methodologies that facilitate assigning resources for an anchor carrier and an additional carrier with a grant message.SOLUTION: The grant message communicated with an anchor carrier can include resource information for a plurality of carriers. The systems and methodologies facilitate identifying control information for an anchor carrier and/or an additional carrier on the basis of an operating mode. The operating mode is a legacy mode or an extended mode (1102). On the basis of the operating mode, particular resources associated with control regions are monitored for control information for respective anchor carrier(s) or additional carrier(s) (1104).
Abstract:
PROBLEM TO BE SOLVED: To provide systems and methods that facilitate providing high reuse for transmitting reference signals, such as positioning reference signals (PRS) and cell-specific reference signals (CRS), to improve audibility thereof for applications such as trilateration and/or the like.SOLUTION: PRSs can be transmitted in designated or selected positioning subframes. Resource elements within the positioning subframe can be selected for transmitting the PRSs and can avoid conflict with designated control regions, resource elements used for transmitting cell-specific reference signals, and/or the like. Resource elements for transmitting PRSs can be selected according to a planned or pseudo-random reuse scheme. In addition, a transmit diversity scheme can be applied to the PRSs to minimize impact of introducing the PRSs to legacy devices. Moreover, portions of a subframe not designated for PRS transmission can be utilized for user plane data transmission.
Abstract:
PROBLEM TO BE SOLVED: To provide a method for allowing a terminal to select a base station in a wireless communication network.SOLUTION: A virtual noise figure is an indication of a virtual noise level at a receiver, which may be higher than an actual noise level at the receiver. In an aspect, a virtual noise figure may be used for selecting a serving base station. A terminal may receive information indicative of a virtual noise figure for each of at least one base station. The terminal may select a serving base station on the basis of the virtual noise figure for each base station. The terminal may send data to the serving base station at a rate selected on the basis of an actual noise figure for the serving base station. In other aspects, a virtual noise figure may be used for interference management and/or power control.
Abstract:
PROBLEM TO BE SOLVED: To provide an improved method for deploying small-coverage base stations.SOLUTION: An access point is configured based on acquired information. The access point may be configured based on configuration(s) of at least one other access point. An identifier to be transmitted by the access point may be selected based on identifier(s) transmitted by the at least one other access point. An access point may configure itself with assistance from a configuration server. For example, the access point may send information such as the location of the access point to the configuration server and the configuration server may respond with a list of neighboring access points for that access point. The configuration server may provide configuration information to an access point on the basis of the location of the access point. The configuration server also may direct an access point to a different configuration server.
Abstract:
PROBLEM TO BE SOLVED: To provide techniques for combating high interference in a dominant interference scenario.SOLUTION: A terminal observes high interference from an interfering base station in a dominant interference scenario. High interference may be combated by reserving time intervals for a serving base station. The terminal communicates with the serving base station in the reserved time intervals and avoids high interference that may desensitize a receiver at the terminal. In one design, the terminal measures received power of base stations and reports its interference condition. The serving base station receives the report, determines that the terminal is observing high interference, and sends a reservation request to the interfering base station to reserve time intervals. The interfering base station grants the request and returns a response. The serving base station thereafter communicates with the terminal in the reserved time intervals.