Telefonaktiebolaget Lm Ericsson (publ)

Broadcom Corporation

Avago Technologies General IP (singapore) Pte. Ltd.

Avago Technologies International Sales Pte. Limited

Beijing Xiaomi Mobile Software Co., Ltd.

Helka-Liina Maattanen

Mihai Enescu

Tommi Tapani Koivisto

Icaro L J Da Silva

Muhammad Ali Kazmi

Iana Siomina

Claes Tidestav

Mattias Frenne

Siva Dharshan Muruganathan

Niklas Andgart

Mattias Andersson

Christopher Peter Callender

Mats Folke

Karol Schober

Sami Hakola

Timo E Roman

Antti Ratilainen

Karl Marko Juhani Lampinen

Shuang Tan

Vesa Virkki

Marko Lampinen

Kari Paavo Kalevi Pietikainen

According to some embodiments, a method of operating a network node is provided. A first information element IE is provided including an indication of an added synchronization signal block/physical cell identity SSB/PCI. The indication of the added SSB/PCI indicates an SSB and associated PCI that are associated with a radio link. A second IE is provided including the indication of the added SSB/PCI. The second IE relates to at least one of channel state information CSI, radio link monitoring, uplink power control, and/or uplink spatial relations. A control message including the first IE and the second IE is transmitted to a user equipment UE, to enable the UE to perform a radio link monitoring function on the radio link.

Methods of configuring SSB/PCI for use by a UE and related user equipment and network nodes

A method for performing radio link monitoring comprises performing, by a user equipment (UE), a radio link monitoring (RLM) procedure with first RLM parameters; receiving, at the UE, a message including at least one second RLM parameter; identifying, by the UE, a difference between the first RLM parameters and the at least one second RLM parameter; and resetting, at the UE, at least one of the first RLM parameters in response to identifying the difference between the first RLM parameters and the at least one second RLM parameter. The method may configure the UE upon performing RLM by adapting the difference between the current RLM parameters and the future parameters, so that the UE behavior may become clear.

Method for performing radio link monitoring

A method by a wireless device is provided for optimized reconfiguration of radio link monitoring (RLM) and beam monitoring. The method includes receiving, from a first network node, a first message comprising at least one RLM parameter. A second message indicating activation of the at least one RLM parameter associated with the first message is received. The second message is a lower layer signal compared to the first message.

Optimized reconfiguration of RLM and beam monitoring parameters

A method and apparatus are disclosed. A base station configured to communicate with a user equipment is provided. The base station is configured to indicate a plurality of measurement reporting configurations associated with a measurement object configuration, and transmit control information to activate at least one of the plurality of measurement reporting configurations. The UE is configured to receive an indication of a plurality of measurement reporting configurations associated with a measurement object configuration, receive control information activating at least one of the plurality of measurement reporting configurations and report at least one measurement based at least in part on the activated at least one of the plurality of measurement reporting configurations.

Control information based activation of measurement reporting configurations

A user equipment (UE) provides feedback about channel conditions. From a set of primary sub-bands subject to channel state information reporting by the UE, there is identified one or more of the primary sub-bands for reporting channel quality with a finer frequency-domain granularity than other primary sub-bands of the set (). The one or more is less than all primary sub-bands in the set. In various embodiments, either the UE or the network can select which are the primary sub-bands to be identified for the finer granularity reporting, and the selection can be for example the best primary sub-bands or those with the highest variance in a measure of channel quality or random (). Then for each of the identified primary sub-bands, the UE measures and reports the channel quality with the finer frequency-domain granularity for each secondary sub-band whose frequency lay within the respective identified primary sub-band.

Methods, apparatus and computer programs for controlling feedback about channel conditions

A device includes circuitry configured to determine that pending transmissions on two or more physical channels overlap in time and determine that a total transmit power of the pending transmissions exceeds a maximum transmit power. The circuitry is also configured to assign priorities to the pending transmissions based on one or more predetermined criteria. Power scaling is applied to at least one lower priority transmission so that the total transmission power of the pending transmissions is less than or equal to the maximum transmit power.

Uplink power scaling for dual connectivity

The present invention provides a method, apparatus and a computer program product for feedback design of hierarchical coordinated multipoint transmission. The present invention includes obtaining, at a user equipment, a list including a predetermined number of cells, identifying, at the user equipment, a cooperation set of cells including the cell serving the user equipment, determining, at the user equipment, for each cell included in the list whether the cell belongs to the identified cooperation set of the user equipment, and if the cell belongs to the cooperation set of the user equipment, reporting a first predetermined set of parameters, and if the cell does not belong to the cooperation set of the user equipment, reporting a second predetermined set of parameters.

Feedback design of hierarchical coordinated multipoint transmission

An arrangement is described for adapting outer loop precoder phase combiner in a radio communication system having coordinated multipoint transmission. In the arrangement ACK/NACK-message received as a response to a transmitted data packet is used for adapting the phase. When a NACK-message is received the phase may be adapted or it may be further determined if the error was due to error in channel code or due to destructive inter-point signal combining. If the error was due to destructive combining the phase is adjusted.

Radio communications

To control UE assumption of interference there is a controller module to control a plurality of transmission points, each constituted by a set of at least one transmit antenna, to transmit data to another device in a coordinated transmission from at least a subset of the plurality of transmission points. The controller module is configured to allocate, to each resource linked to the subset of the plurality of transmission points, an interference contribution parameter that is indicative of an expected interference contribution originating from said transmission point, and to inform said another device of those resources to which the subset of the plurality of transmission points is linked, together with the respective interference contribution parameter allocated to each resource. Another device reports feedback based on signals which are scaled with the respective interference contribution parameter.

Devices and methods related to controlling UE assumption of interference

For coordinated multipoint transmission arrangements there is provided a device, including a controller module, configured to control a plurality of transmission points, each constituted by a set of at least one transmit antenna, to transmit data to another device in a coordinated transmission from at least a subset of the plurality of transmission points, wherein each subset with resources allocated thereto defines a respective coordinated transmission scheme, wherein the controller module is configured to transmit information on resources pertaining to multiple coordinated transmission schemes, and send at least one biasing parameter associated to at least one of the transmission schemes, to be applied for biasing a channel quality parameter. Another device includes a controller module, configured to report feedback responsive to such coordinated transmission, and the controller module is, among others, configured to apply the at least one biasing parameter to derived channel quality parameters.

Devices and methods related to improvements in coordinated multipoint transmission arrangements

A network sends to a user equipment UE a reference signal configuration, and from receiving it the UE selects a codeword identifying a cooperative multipoint CoMP transmission scheme. There is a CoMP scheme selection codebook from which the UE selects the codeword corresponding to its recommended CoMP scheme. The UE sends to the network that codeword which identifies the CoMP transmission scheme, along with the CSI feedback characterizing the CoMP transmission scheme. From that codeword which the network receives it determines the UE's assumed CoMP transmission scheme, which the network uses to determine how the CSI feedback, received from the UE, was calculated by the UE (for example, joint transmission, or dynamic point selection with or without muting, or coordinating scheduling/beamforming). The network uses this information for selecting a CoMP transmission scheme for downlink CoMP transmissions to the UE.

Growing community of inventors

Helsinki, Finland

Helka-Liina Maattanen