Abstract:
PROBLEM TO BE SOLVED: To provide transmit power control techniques for a small base node such as a Home Base Node (HBN), or femto cell to prevent co-channel or adjacent channel interference, or to limit its coverage area.SOLUTION: Once the power is set, the HBN signal to served Home User Equipment (HUE) its Common Pilot Channel (CPICH) transmit power for accurate path loss estimation. When this power is outside of the permissible range, the HBN adjusts other parameters (such as a Random Access Channel (RACH) constant value) to compensate for the error in the signaled CPICH power, and thus compensate the error in the process of determining path loss. Similarly, if the uplink sensitivity is adjusted to prevent interference, parameters would also be adjusted and signaled to the HUE to reflect the link imbalance.
Abstract:
PROBLEM TO BE SOLVED: To enable fast allocation of additional carriers in multi-carrier wireless communication systems.SOLUTION: High layer protocols are used to allocate additional carriers to UE 304 in a wireless network. Additionally, management of the additional carriers is accomplished via high speed lower layer signaling protocols. Management involves activating/deactivating the additional carriers and instructing the UE to provide carrier feedback and to monitor pilot or control channels of such carriers.
Abstract:
PROBLEM TO BE SOLVED: To provide a method of managing a shared resource.SOLUTION: A base station can employ a shared channel, such as a control channel, for communication with a mobile device. The mobile device can be granted exclusive access to a shared resource for a limited time. The exclusive access can be such that there is no limit in the size of messages transferred across the shared resource. To improve operation, the exclusive grant can be applied until it is determined that appropriate packets are transferred.
Abstract:
PROBLEM TO BE SOLVED: To provide efficient channel allocation in a network comprising an ad-hoc small-coverage base station.SOLUTION: In some aspect, restricted access nodes are assigned to a designated common channel, and access terminals that communicate in active with a macro access node may selectively be assigned to the designated channel. In some aspect, an access terminal associated with the macro access node may perform a handoff to a different carrier wave when the access terminal is in the vicinity of a coverage area of a restricted access node. In some aspect, an access terminal associated with a macro access node may perform a handoff to a different carrier wave on the basis of location information. In some aspect, access to a restricted access node is controlled on the basis of policy and/or on the basis of operation of an access terminal associated with the restricted access node.
Abstract:
PROBLEM TO BE SOLVED: To provide a method and apparatus for an adaptive de-jitter buffer. SOLUTION: The adaptive de-jitter buffer is used for voice over IP (VoIP) for packet switch communications. This method and this apparatus for the de-jitter buffer presented avoid playback of underflows while balancing end-to-end delay. The de-jitter buffer is recalculated at the beginning of each sound part. Sound part packets are compressed upon receipt of all remaining packets. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide methods, apparatuses, and computer program products for facilitating a beacon-assisted handover from a macro network to a femto cell during an active call.SOLUTION: A femto cell management system 422 assigns a unique identifier to a femto cell 424, and the femto cell 424 utilizes the unique identifier to broadcast a beacon at a frequency different from the operating frequency of the femto cell 424. A wireless terminal 430 receives from a macro network 410 a control message directing the wireless terminal 430 to scan particular frequencies. The wireless terminal 430 subsequently provides the macro network 410 with a report identifying attributes obtained from the scan, the report including attributes associated with the beacon. The macro network 410 then performs a handover from the macro network 410 to the femto cell 424 as a function of the attributes.
Abstract:
PROBLEM TO BE SOLVED: To provide a method for enabling femtocell functionality to devices within a communications network.SOLUTION: A non-femto enabled device and/or a femto enabled device can communicate with a femto enabled device in the same geographical area for femto-enabled peer-to-peer communication. Two non-femto enabled devices can be provided with femto functionality through utilization of a femto enabled device, which operates as a hub between the two devices. In a further aspect, a determination is made as to whether a connection of a device is handed over to a femto enabled device if both devices are extremely proximate to each other. Other aspects relate to enhanced position determination, adaptive coverage enhancement, local mobile networks, open access femtocells without a backhaul, and local broadcast of media though utilization of femto enabled devices.
Abstract:
PROBLEM TO BE SOLVED: To provide a method of managing interference that occurs during wireless communication, by reducing the power level of an overhead channel during a call.SOLUTION: An optimized reduced power level for an overhead channel of an unplanned access point to an associated access terminal is determined during a call between the unplanned access point and the associated access terminal. The overhead channel is transmitted according to the optimized reduced power level resulting in a decrease in interference seen by neighboring unplanned access points.
Abstract:
PROBLEM TO BE SOLVED: To provide systems and methodologies that facilitate dynamic load balancing in a communications network.SOLUTION: One or more mobile devices can send random access preambles on an uplink frequency paired to a downlink frequency employed to connect the one or more mobile devices to a base station. The base station can determine if an uplink frequency load imbalance exists based upon the random access preambles. The base station can transmit an indicator on an acquisition indicator channel to at least one mobile device. The indicator includes a command to transition to a new uplink frequency. The mobile device can switch uplink frequencies in response to the command.
Abstract:
PROBLEM TO BE SOLVED: To provide a method for uniquely identifying a femto cell to facilitate a hand-in to the femto cell.SOLUTION: A user equipment report is received, which includes attributes related to a signal broadcast by a femto cell. An identifier associated with the femto cell is ascertained from an attribute included in the report. The femto cell is then identified on the basis of the identifier. In a further embodiment, a timing parameter is received, and a scrambling parameter is set. A signal including the scrambling parameter is then broadcasted according to an offset related to the timing parameter. In yet another embodiment, a femto cell is detected during an active call. An identifier associated with the femto cell is then ascertained and reported.