Asbjorn Grovlen

Bio: Asbjorn Grovlen is an academic researcher from Nokia. The author has contributed to research in topics: Telecommunications link & Communication channel. The author has an hindex of 8, co-authored 10 publications receiving 297 citations.

Downlink control and physical hybrid arq indicator channel (phich) configuration for extended bandwidth system

Abstract: In accordance with the exemplary embodiments of the invention, there is described herein at least a method, executable computer program, and apparatus to form a resource allocation for a particular bandwidth, including defining at least one search space for a first bandwidth region used by a first user equipment and for a second bandwidth region used by a second user equipment, each search space including control channel elements, where there are first control channel elements in the first bandwidth region and second control channel elements in the second bandwidth region, and transmitting information descriptive of the resource allocation to the first user equipment and the second user equipment.

Soft buffer memory configuration in a communication system

Abstract: In accordance with an embodiment of the present invention, an apparatus, comprising a processor configured to determine a total number of soft channel bits, a first number associated with hybrid automatic retransmit request processes and a second number associated with hybrid automatic retransmit request processes; and the processor further configured to select a size of a soft buffer memory partition based at least in part on the total number of soft channel bits, the first number associated with hybrid automatic retransmit request processes and the second number associated with hybrid automatic retransmit request processes, is disclosed

Physical downlink control channel configuration for extended bandwidth systems

Abstract: The method includes forming a resource allocation for a particular system bandwidth, where the resource allocation has a larger number of resource blocks than a maximum number of resource blocks associated with the particular system bandwidth. The step of forming includes the use of an extended parameter in a derivation of the resource allocation. The method further includes transmitting information descriptive of the resource allocation to user equipment. The resource allocation may be a downlink resource allocation or an uplink resource allocation. The user equipment is enabled to employ a plurality of extended control channel elements as at least one of an extended physical downlink control channel and a physical hybrid automatic repeat request indicator channel. Modification of the PDCCH structure for LTE advanced in order to enable backward compatibility with Release 8 LTE and a greater choice of bandwidth. Carrier Aggregation concept.

Signaling of redundancy version and new data indication

Abstract: Example methods and apparatus for communicating encoded data blocks (700) in wireless communication systems are disclosed. In one example embodiment, a method (200) for receiving an encoded data block (700) includes receiving (210) a data transmission including a subset of a plurality of bits of the encoded data block (700). The example method (200) also includes receiving (220) a first control signal (610) indicating whether the received subset is a first received subset associated with the encoded data block (700) or whether one or more subsets were previously received for the encoded data block (700). The example method (200) also further includes receiving (230) a second control signal (620), the second control signal (620) having a first state and a second state. In the example method (200), the first state of the second control signal (620) indicates that the received subset includes a first predefined subset of the plurality of bits of the encoded data block (700) and the second state of the second control signal (620) indicates that the received subset includes one of a plurality of other predefined subsets of the plurality of bits of the encoded data block (700). In this example embodiment, determining which of the other predefined subsets is included in the received subset is based on one or more system parameters of the wireless communication system (102). Further in this example, the state of the second control signal (620) is selectable between its first state and its second state on a data transmission by data transmission basis, regardless of whether or not one or more subsets of the encoded data block (700) were previously received.

Apparatus, method and computer program providing enhanced fractional dedicated physical channel downlink power control during soft handover

Abstract: A method includes establishing a first radio link with a serving network entity and a second radio link with a target network entity, commencing a soft handover from the serving network entity to the target network entity, receiving a quality target from a network comprising the serving and target network entities, and applying the quality target only to the first radio link to generate a power control command.

User terminal, radio base station and radio communication method

Abstract: The present invention is designed to provide a user terminal, a radio base station and a radio communication method of novel structures that can achieve a good communication environment. A radio base station non-orthogonal-multiplexes downlink signals for a plurality of user terminals over a given radio resource, a user terminal having received the downlink signals for the plurality of user terminals decodes downlink signal for another user terminal, judges whether or not the downlink signal for the other user terminal has been successfully received, based on the decoding result of the downlink signal, reports a judgement result as to whether or not the downlink signal for the other user terminal has been successfully received and a judgement result as to whether or not a downlink signal for the user terminal has been successfully received, to the radio base station, and then the radio base station executes retransmission control of downlink signals based on reports from the user terminal.

Systems and methods for an enhanced control channel

Abstract: Methods and systems for sending and receiving an enhanced downlink control channel are disclosed. The method may include receiving control channel information via an enhanced control channel. The method may also include using the control channel information to receive a shared channel. The method may include detecting the presence of the enhanced control channel in a given subframe. The enhanced control channel may be transmitted over multiple antenna ports. For example, code divisional multiplexing and de-multiplexing and the use of common and UE-specific reference signals may be utilized. New control channel elements may be defined, and enhanced control channel state information (CSI) feedback may be utilized. The presence or absence of legacy control channels may affect the demodulation and or decoding methods. The method may be implemented at a WTRU.

Method and apparatus for device-to-device communication

Abstract: A first user equipment (UE) and a second UE communicate with a network element (e.g., an eNB) over a carrier (e.g., an uplink or downlink cellular carrier). The first and second UEs also engage in D2D communication using resources of the carrier that have been allocated to them by the network entity. Using the allocated resources, the first and second UEs communicate using a subframe that has a first set of symbols in during which the first UE transmits, a second set of symbols during which the second UE transmits, and a guard interval between the first and second UEs.

Control channel signaling and acquisition for carrier aggregation

Abstract: A method and apparatus for handling a control channel for carrier aggregation in wireless communications. The method includes determining which component carrier to listen to, detecting the downlink control channel, processing mapping information related to downlink and uplink transmissions and operating discontinuous reception with respect to carrier aggregation. The method also includes detecting a component carrier, determining the component carrier type and locating the anchor component carrier, if necessary, where the anchor component carrier carries the carrier aggregation information.

Providing a downlink control structure in a first carrier to indicate control information in a second, different carrier

Abstract: A mobile station receives a downlink control structure in a first carrier, where the downlink control structure indicates that control information for the mobile station is on a second, different carrier. The mobile station decodes the control information in the second carrier, where the control information specifies resource allocation of a wireless link for the mobile station. More specifically, according to some implementations, the control channel in the first carrier specifies the resource allocation for an extended control channel in the second carrier, where the extended control channel specifies the resource allocation for traffic data of a wireless link for the mobile station.