Abstract:
A method and apparatus provide for low latency transmissions. A first control channel can be transmitted in a first temporal portion of a subframe. The subframe can include a plurality of OFDM symbols in a time domain and a plurality of subcarriers in a frequency domain. The first control channel can occupy a first portion of subcarriers less than the plurality of subcarriers. The first control channel can assign first data resources only in the first temporal portion of the subframe. A second control channel can be transmitted in a second temporal portion of a subframe. The first temporal portion can occupy at least one different first OFDM symbol in the subframe from the second temporal portion. The second temporal portion can occupy at least one different second OFDM symbol in the subframe from the first temporal portion. The second control channel can occupy a second portion of subcarriers that is less than the plurality of subcarriers. The second control channel can assign second data resources only in the second temporal portion of the subframe.
Abstract:
A method and apparatus provide for low latency transmissions. A higher layer configuration message can be received that indicates a set of resource blocks for receiving data packets in at least one symbol of a subframe. An attempt can be made to decode a data packet in a first set of resource elements within the set of resource blocks. The first set of resource elements can be in the at least one symbol of the subframe. An attempt can be made to decode the data packet in at least a second set of resource elements within the set of resource blocks. The second set of resource elements can be in the at least one symbol of the subframe. The second set of resource elements can include at least one resource element that is not in the first set of resource elements. The data packet in one of the first set of resource elements and the second set of resource elements can be successfully decoded. A data payload of the decoded data packet can be delivered to an application layer.
Abstract:
A method in a wireless communication device including receiving control signaling from a base station in a control region of a downlink carrier spanning a first bandwidth, receiving a signaling message from the base station indicating a second bandwidth, receiving a first control message within the control region using a first Downlink Control Information (DCI) format size, the first DCI format size based on the first bandwidth, and receiving a second control message within the control region using a second DCI format size, the second DCI format size based on the second bandwidth, wherein the second bandwidth is distinct from the first bandwidth and the first and second control messages indicate downlink resource assignments for the downlink carrier.
Abstract:
A radio link is established for multi-state cells. User equipment is operated in a connected mode with a serving cell. A transition is determined of a neighbor cell from dormant to active. At least a set number of out-of-synchronization events are detected with respect to the serving cell. It is determined that the neighbor-cell reference-signal received power is greater than the serving-cell reference-signal received power plus a threshold after determining the transition of the neighbor cell from dormant to active. A radio-resource-control connection-establishment message is sent to the neighbor cell when the neighbor-cell reference-signal received power is greater than the serving-cell reference-signal received power plus a threshold.
Abstract:
A method that reduces power consumption in a wireless communication device having a first and a second modem. The method includes detecting access to a communication network via the second modem, and in response to that detection: establishing a communication channel between the second modem and a communication service over a communication network; and triggering the first modem to enter a sleep state. The communication service is configured to respond to receipt at the communication service of an incoming communication to be routed to the first modem via a first communication network by: (i) automatically transmitting a notification via the communication channel to the second modem and (ii) forwarding the incoming communication via the first communication network to the first modem. The method then includes, in response to receipt of the notification at the device: awakening the first modem to an active state to enable receipt of the incoming communication.
Abstract:
A method (700, 800) and apparatus (500, 600) for distinguishing cells with the same physical cell identifier is disclosed. The method can include receiving (820) a handover request message including target cell timing offset information at a potential target cell base station, where the potential target cell base station can have a physical cell identifier. The method can include comparing (830) the received target cell timing offset information with stored timing offset information at the potential target cell base station. The method can include sending (840) a handover request accept message if the received target cell timing offset information is substantially equal to the stored timing offset information. The method can also include receiving (720), at a wireless terminal, a target cell physical cell identifier and determining (730) a target cell timing offset of a radio frame of the target cell with respect to reference timing of a serving cell. The method can include sending (740) a measurement report including the target cell physical cell identifier and the target cell timing offset.
Abstract:
A method for predicting performance of a radio link in a wireless communication terminal including hypothesizing a second codeword including information associated with a hypothesized first codeword, obtaining channel state information from a received signal, and estimating a decoder error rate of the first codeword under a condition that the second codeword may not be decoded correctly, wherein the decoder error rate is estimated using the channel state information.
Abstract:
Apparatuses, methods, and systems are disclosed for sending and/or receiving feedback for a system information request. One apparatus includes a transmitter that transmits information indicating a request for system information. The apparatus includes a processor that monitors, during a predetermined time period, for a feedback response indicating that the request for the system information was received.
Abstract:
A SS of a SS block of a SS burst set can be received. A measurement can be performed at least on the received SS of the SS block. A PBCH of the SS block that can include a first portion and a second portion of the PBCH can be received. The first portion can carry at least a part of minimum system information. The second portion can carry timing information. The timing information can include information including at least an indication of a SS block index of the SS block within the SS burst set. The SS block index can be determined. A measurement report that can include a measurement quantity from the measurement on the received SS of the SS block and that can include the determined SS block index can be transmitted.
Abstract:
A method and apparatus provide for low latency transmissions. A higher layer configuration can be received at a device. The higher layer configuration can be higher than a physical layer configuration. The higher layer configuration can indicate configuring the device with a low latency configuration for a low latency transmission mode in addition to a regular latency configuration for a regular latency transmission mode. The low latency transmission mode can have a shorter latency than the regular latency transmission mode. A packet can be received based on one of the low latency configuration and the regular latency transmission mode in a subframe n. A feedback packet can be transmitted in a following subframe n+p, where p