Nokia Solutions and Networks Oy

Nokia Technologies Oy

Nokia Corporation

Nokia Siemens Networks Oy

Hmd Global Oy

Mieszko Chmiel

Frank Frederiksen

Benoist Sebire

Timo E Roman

Bernhard Raaf

Kaj Tapio Jansen

Przemyslaw J Czerepinski

Tommi Tapani Koivisto

Xiang Guang Che

Samuli Visuri

Iwajlo Angelow

Grzegorz Ciolkowski

Wolfgang Zirwas

Woonhee Hwang

Robert Buranyi

Egon Schulz

Peng Chen

Peter Skov

Juergen Michel

Matti Tapani Kiiski

Lars Lindh

Jörn Krause

Hans Juergen Kroener

Gunter Wolff

Martin Kollar

Xiangguang Che

Wolfgang Payer

Thomas Stadler

Yizhi Yao

Bernd Baumgartner

Jaroslaw Niewczas

Lukasz Rygiel

Simon Goedecke

Carolin Huppert

Przemyslaw Jan Czerepinski

Timo Eric Roman

A method comprising extending a transmission delay caused by a clear channel assessment check delaying a communication between an access point and a user equipment over an unlicensed transmission link beyond a start of an earliest possible subframe/slot with useful data, the transmission delay being extended till a defined period from a start of a subframe/slot.

Method, system and apparatus for extending transmission delay in clear channel assessment

In one exemplary embodiment, a method includes: inserting an indication of a cyclic prefix length into a transmission; and sending the transmission. In another exemplary embodiment, a method includes: receiving a transmission; and processing the received transmission to obtain an indication of a cyclic prefix length.

Apparatus, methods, and computer program products providing an indication of cyclic prefix length

Various communication systems may benefit from carrier aggregation. For example, carrier aggregation may benefit from improved resource allocation. A method, in certain embodiments, includes allocate resources in a subframe so as to avoid at least one of a first resource or a last resource in the subframe. The subframe does not comprise a sounding reference signal. The method also includes sending a message comprising the resource allocation of the subframe to a user equipment.

Allocation of resources in physical uplink control channels

Described is a method for the mapping of reference signals. The method includes generating a reference signal sequence for two or more cells, where each cell of the two or more cells has a cell bandwidth. The method also includes determining an offset for the reference signal sequence based at least in part on the cell bandwidth of each cell. Mapping the reference signal sequence to resource elements of physical resource blocks for the cells based at least in part on the offset is included in the method. Apparatus and computer readable media are also disclosed.

Mapping reference signal for multi-cell transmission

In one aspect thereof the exemplary embodiments of this invention provide a method that includes, prior to confirmation that a network access node has correctly acquired capabilities of a user equipment, operating a user equipment with the network access node in accordance with a first rate matching mode and, only after confirmation to the user equipment that the network access node has correctly acquired capabilities of the user equipment, changing the rate matching mode to a second rate matching mode. In an embodiment the first rate matching mode comprises puncturing a downlink shared channel transmission with a set of resource elements, which may be at least one of reference symbols and muted resource elements, and the second rate matching mode comprises rate matching the downlink shared channel around those resource elements that are members of the set of resource elements. Also described are apparatus and computer readable storage medium storing program code that operate in accordance with the method.

Change of rate matching modes in presence of channel state information reference signal transmission

A method comprising monitoring whether or not an allocation of uplink communication resources on a primary cell of a communication network is successful for a communication element to be scheduled on a downlink channel of at least one secondary cell of the communication network, and incrementing at least one counter according to the monitoring result.

Monitoring and optimizing of control channel usage

A method is described, which includes controlling a coordinated transmission between network control elements and terminals on resource elements, detecting whether a resource element includes a specific element, and selecting a resource element for the coordinated transmission, when it is detected that the resource element does not include a specific element. The application also describes some further aspects to improve a coordinated transmission such as a coordinated multipoint transmission is improved.

Coordinated multipoint transmission

The present invention addresses a method, apparatus and computer program product for managing control channel usage in Carrier Aggregation, which implement defining a time reuse factor for a Physical Uplink Control Channel resource on a Primary Cell for enabling time multiplexing the subframes of the resource, and assigning a Physical Uplink Control Channel resource element to a requesting User Equipment by using colliding resources in different subframes, wherein the time reuse factor is variably set based on at least one of the number of requesting User Equipments and the individual traffic needs of the requesting User Equipment.

Method, apparatus and computer program product for enhanced control channel usage in carrier aggregation

There is provided a method, including detecting, by a network node of a first cell, whether or not there is any output power unused in a second cell during a predefined time period, wherein the un-used output power is originally reserved for a transmission on a specific channel in the second cell; upon detecting that there is at least some of the output power unused, determining the amount of the unused output power in the second cell; and applying at least part of the unused output power to boost a predetermined transmission in the first cell.

Power control

In a first aspect, requests for carrier aggregation scheduling for a user equipment are received (S) from a first cell used for carrier aggregation for the user equipment in a cellular communications network and n second cells of the cellular communications network, used for the carrier aggregation. The requests include a first scheduling decision of the first cell and n second scheduling decisions of the n second cells. It is checked (S) whether or not the requests exceed limits of the user equipment, and the n second scheduling decisions are modified (S) according to predefined rules such that the requests do not exceed the limits of the user equipment. In a second aspect, limits of the user equipment are increased by a margin (S), the increased limits are split onto active cells of the first and n second cells according to a predefined rule (S), and the margin is controlled (S) dependent on whether the increased and split limits are exceeded or not by the requests (S). If they are exceeded, the n second scheduling decisions may be modified according to the first aspect (S).

Rate capping with multiple carrier aggregation schedulers

A method, user equipment, network device, and software product employ indicators from a plurality of respective cells to indicate a difference, if any, regarding allocation in the respective cell as compared to neighbor cells. Mobility measurements are then performed according to the indicators, and also on the basis of configuration of a cell where the measurements are performed.

Method, apparatus, and computer program product for signaling allocation of neighbor cells

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Wroclaw, Poland

Mieszko Chmiel