Abstract:
Methods, systems, and devices for wireless communications are described. Techniques for multiple transmission reception points (TRPs) in a cluster may coordinate scheduling and communications with a user equipment (UE). Different TRPs may allocate uplink resources for one or more UEs within a coordinated cluster to transmit feedback information. A first TRP may provide a first set of resources that one or more associated UEs may use to transmit acknowledgment (ACK) feedback to indicate successful receipt of a downlink transmission of the first TRP, and one or more other TRPs of the coordinated cluster may provide a second set of resources that the one or more UEs may use to transmit negative acknowledgment (NACK) feedback to indicate that a downlink transmission of the first TRP was lost. The second set of resources may include non-orthogonal multiple access (NOMA) resources.
Abstract:
Coexistence solutions may be needed for sharing channels with multiple operators. In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus for sharing channels with multiple operators are provided. The apparatus may detect a conflict between a first base station and a second base station based on a coverage overlap between the first base station and the second base station. The apparatus may resolve the conflict based on a classification of the conflict, and at least one of a channel priority or a channel preference.
Abstract:
Different types of backhauls are used to provide connectivity for an access point. In some implementations, an access point monitors conditions on at least one backhaul to determine whether each backhaul is capable of supporting any QoS requirements of the access point's traffic flows. If the access point determines that a backhaul is capable of supporting the QoS requirement of a given traffic flow, the access point may configure the traffic flow to be routed via that backhaul. In some implementations, an access point selects a different backhaul for a traffic flow based on the type of traffic flow. For example, upon determining that a traffic flow is destined for an entity associated with another backhaul, the access point may switch to the other backhaul for routing that traffic flow.
Abstract:
A small cell (e.g., femtocell) in a wireless communication may determine a set of wireless signal measurements for a plurality of small cells causing pilot cell pollution within a coverage area. The small cell may determine an adjustment of a transmission parameter of the small cells for reducing the pilot cell pollution, and transmit the adjustment to the small cells. The adjustment may include, for example, minimizing an area of overlap between at least two small cells having signal power difference below a threshold, maximizing a signal to interference and noise ratio at a location associated with at least two small cells, minimizing an area associated with at least two pilot signals within a threshold signal level, distributing traffic load to at least two of the small cells based on the set of measurements, or by minimizing the number of small cells covering a path.
Abstract:
Disclosed are systems and methods for regulating system reselections by idle-mode mobile devices. In one aspect, a femtocell may be configured to reduce frequency of its reselection beacon, which reduces probability that a fast moving mobile device will detect the reselection beacon and reselect to that femtocell. This aspect may also delay femtocell reselection for slow moving mobile devices. In another aspect, a macrocell may slow down system reselection by adjusting cell reselection parameters used by mobile devices to determine the time needed to evaluate cell reselection criteria. Yet in another aspect, a macrocell may instruct a collocated femtocell to decrease its effective coverage area to avoid premature reselection by fast moving mobile devices. Yet in another aspect, a femtocell may use power boosting techniques to increase its reselection radius.
Abstract:
Methods, apparatuses, and computer program products are disclosed for facilitating a beacon-assisted handover from a macro network to a femto cell during an active call. A femto cell management system assigns a unique identifier to a femto cell, which the femto cell utilizes to broadcast a beacon at a frequency different than the operating frequency of the femto cell. A wireless terminal receives a control message from the macro network directing the wireless terminal to scan particular frequencies. The wireless terminal subsequently provides a report to the macro network identifying attributes ascertained from the scan, which includes attributes associated with the beacon. The macro network then performs a handover from the macro network to the femto cell as a function of the attributes.
Abstract:
A small base node such as a Home Base Node (HNB), or femto cell, may reduce its transmit power in order to prevent co-channel or adjacent channel interference, or to limit its coverage area. Once the power is set, the HNB signal to a served Home User Equipment (HUE) its transmit Common Pilot Channel (CPICH) transmit power for accurate path loss estimation. When this power is outside of the permissible range, the HNB adjusts other parameters (such as Random Access Channel (RACH) constant value) to compensate for the error in signaled CPICH power, and thus compensate in that process the error in 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:
Various aspects and features related to wireless communication for high reliability and low latency are described. In an aspect of the disclosure, a method, a computer-readable medium, a system, and an apparatus are provided. A method of wireless communication includes communicating with a network via one or more network nodes using separate wireless links for each UE in a set of UEs using a same RAT. The method includes either transmitting uplink data traffic from a common source to the network nodes using respective separate wireless links corresponding to the two or more UEs or receiving downlink data traffic destined for the common source from the network nodes using respective separate wireless links corresponding to the two or more UE.
Abstract:
The present disclosure generally relates to techniques to increase reliability of communications within a network during a low reliability period. The network may include a user equipment (UE) communicatively coupled with one or more transmit/receive points (TRPs), with the communications between the UE and the one more TRPs requiring a reliability above a first reliability threshold. A processor of a network entity may identify a low reliability period which occurs when the reliability of the communications is determined to be below a second reliability threshold. The processor may cause the network to perform one or more remedial actions to increase the reliability during the low reliability period.
Abstract:
Systems and methods are provided for physical cell identifier (PCI) and physical random access channel (PRACH) offset joint planning by a network entity that determines an energy level for each of a plurality of PRACH frequency offsets and selects a PRACH frequency offset from the plurality of PRACH frequency offsets, based at least in part on the determined energy levels. The network entity determines a plurality of possible physical cell identifiers (PCIs) for the selected PRACH frequency offset and selects a PCI from the plurality of possible PCIs.