Nokia Technologies Oy

Marco Maso

Nhat-Quang Nhan

Filippo Tosato

Alessio Marcone

Karri Markus Ranta-Aho

Rana Ahmed Salem

Axel Mueller

Salah Eddine Hajri

Kari Pekka Pajukoski

Jorma Johannes Kaikkonen

Benny Vejlgaard

Hao Liu

William J Hillery

Amir Mehdi Ahmadian Tehrani

Esa Tapani Tiirola

Eugene Visotsky

Pasi Eino Tapio Kinnunen

Oskari Tervo

Leonardo Chiarello

Kari Juhani Hooli

Mihai Enescu

Frederick W Vook

Daniela Laselva

Matthew Baker

Simon Svendsen

Sami Hakola

Jun Tan

Youngsoo Yuk

Cássio Ribeiro

Halit Murat Gürsu

Luca Rose

Majed Saad

There is provided a method at a network node of a communication network, comprising: receiving an uplink reference signal from a user equipment; estimating, based on the received uplink reference signal, delay information regarding a delay profile of a communication channel between the user equipment and the network node and spatial information regarding the communication channel; applying both the delay information and the spatial information in precoding of at least one downlink reference signal; transmitting the at least one precoded downlink reference signal to the user equipment; and receiving, from the user equipment as a response to the transmission of the at least one precoded downlink reference signal, channel information, the channel information indicating at least non-zero coefficients of at least one channel transmission layer.

Improving precoding

Embodiments of the present disclosure relate to methods, devices, apparatuses and computer readable storage media for Uplink Control Information (UCI) design. The method comprises determining, at a terminal device, a matrix comprising a set of non-zero linear combination coefficients for quantizing a channel between the terminal device and a network device, the matrix having spatial components and frequency components; shifting the frequency components of the matrix circularly, such that a target coefficient of the set of non-zero linear combination coefficients is located in a frequency component with a predetermined index of the frequency components in a shifted matrix; generating a first indication indicating the spatial component associated with the target coefficient in the matrix; and transmitting, to the network device, uplink control information comprising the first indication. In this way, a new solution for designing the UCI may reduce the overhead for reporting the parameters in the UCI.

Uplink control information

Systems, methods, apparatuses, and computer program products for power headroom enhancements and triggers for waveforms. A method may include determining, an event which triggers a power headroom report to report a headroom between a current user equipment transmission power and a nominal power. The determination may depend at least partially on a configuration of frequency domain spectrum shaping. The method may also include generating a power headroom report based on the event. The method may further include transmitting the power headroom report to a network element.

Power headroom enhancements and triggers for waveforms

A method includes determining, by a user device in a wireless network, at least one starting random access channel occasion (RO), wherein each of the at least one starting RO is a first valid RO of an RO set for a physical random access (PRACH) transmission with preamble repetitions, wherein the determining the at least one starting RO is based at least on valid ROs; determining, by the user device, an RO set for the PRACH transmission with preamble repetitions based on the determined at least one starting RO, the determined RO set including one of the at least one starting RO; and transmitting, by the user device to a network node, the PRACH transmission with preamble repetitions using the determined RO set.

Starting random access channel occasion determination for multiple PRACH transmissions for wireless networks

According to an example aspect of the present invention, there is provided an apparatus, such as a user equipment, including at least one processing core, at least one memory including computer program code, the at least one memory and the computer program code being configured to, with the at least one processing core, cause the apparatus at least to initiate a random access process with a network by transmitting an initial random access message to the network, receive a random access response from the network, the random access response including a timing advance command bit sequence, determine from the timing advance command bit sequence a timing advance value and a configuration parameter, and transmit a request message to the network at least once in compliance with the configuration parameter.

Transmission of parameter

An apparatus comprising: at least one processor; and at least one memory including computer program code; the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to: generate () a synchronization signal for transmission over one or more symbols, wherein the number of symbols is dependent on a subcarrier spacing.

Apparatus, method, and computer program

Example embodiments of the present disclosure relate to methods, devices, apparatuses and computer readable storage medium for Random Access Channel (RACH) occasion (RO) dropping. In a method, a device determines a set of valid random access channel occasions (ROs) for a physical random access channel (PRACH) transmission with preamble repetitions. The device determines that the PRACH transmission is to be dropped in at least one RO of the set of valid ROs. The device determines one or more ROs of the set of valid ROs for calculation of a random access radio network temporary identifier (RA-RNTI), the one or more ROs for calculation of the RA-RNTI are not conditioned to whether the corresponding PRACH transmission over the one or more ROs is to be dropped. Then the device calculates the RA-RNTI based on the determined one or more ROs of the set of valid ROs.

RO dropping and RA-RNTI calculation

In accordance with example embodiments of the invention there is a method and apparatus to perform at least: receiving from a serving cell of a communication network information comprising a first contention based random access channel configuration and a second random access channel configuration associated with at least a first service, wherein the second random access channel configuration is inactive and whose activation is associated with at least one activation timer; transmitting a first physical random access channel message using a resource of the first contention based random access channel configuration; determining a condition holds after reception of a network message and activating a resource of the second random access channel configuration based on the at least one activation timer; and based on the determining, transmitting a second physical random access channel message using a resource of the second random access channel configuration.

Dynamic random access occasion configuration after a contention

An apparatus comprising means for performing: grouping columns of a linear combination coefficient matrix into a predefined number of clusters; and sending at least one of the clusters in a second part of a uplink control signalling transmission of a channel to an access node, wherein the uplink control signalling transmission comprises a first part and the second part.

Apparatus, method and computer program for uplink control signalling

A method for predicting channel state information is described. The method includes determining whether or not geodesic prediction is to be performed and transmitting the determination of whether or not geodesic prediction is to be performed in a first part of uplink control signaling. In response to determining that geodesic prediction is not to be performed, the method includes transmitting a current channel estimate in a second part of uplink control signaling, and in response to determining that geodesic prediction is to be performed, the method includes transmitting either a determined current value of a tangent vector, or a determined step size parameter, or both the determined current value of the tangent vector and the determined step size parameter in the second part of uplink control signaling. Channel state information is predicted based on information provided in the first and second parts of uplink control signaling.

Channel prediction framework for radio communication

Where large transport blocks are rate-matched and transmitted on each PUSCH segment using different redundancy versions (RVs), RV cycling with a small number of PUSCH segments might not cover the whole codeword, and/or rate-matching a large TBS across many PUSCH segments into the resource of a single PUSCH segment may lead to an effective coding rate of the self-decodable redundancy versions that is too high. To avoid these issues, the starting position of one or more RVs may be shifted by setting the starting position of a current RV to be the same as an ending position of a previous position, or by scaling the starting position by a value. Alternatively, these issues may be avoided by setting a new starting position for an RV based on the gap from the end of a previous RV to the start of a current RV.

Method of shifting redundancy version for the transmission of a transport block over multiple slots

There is provided radar operation in a wireless communication system. A method comprises transmitting a random access message for one or more communication resources for a radar operation of a wireless device of a wireless communication system, receiving a grant for at least one communication resource for the radar operation of the wireless device, selecting a radar sequence for generating a radar signal, and transmitting the radar signal using the selected radar sequence in the communication resource.

Radar operation of wireless device in wireless communication system

There is provided determining one or more resources on a wireless medium of a wireless communication system for a radar allocation; and transmitting resource allocation information indicating the radar allocation.

Determining radar allocation in wireless communication system

In accordance with example embodiments of the invention there is at least a method and apparatus to perform determining one duration of scheduled transmissions for at least one of physical uplink control channels or physical uplink shared channels; determining at least one actual duration over which power consistency and phase continuity can be maintained; applying one or more time-domain window duration based at least in part on the determined at least one actual duration to make the one or more time-domain window duration cover the one duration of the scheduled transmissions; and based on the determined more than one time-domain window duration, performing at least one of modulation or demodulation of the scheduled transmissions.

Time domain window adaptation for joint channel estimation and DMRS bundling

Dynamic and partial sharing of the channel measurement downlink reference signal resources are provided. An apparatus performs determining information relating to an actual number of ports configured for a user equipment for channel measurements and determining a pool of channel state information reference signal resources for the user equipment. The pool of channel state information reference signal resources is provided in a radio resource control configuration and includes an excess number of ports compared to the actual number of ports. The apparatus also transmits to the user equipment via at least one of a medium access control control element or downlink control information, configured user equipment specific mapping for the pool of channel state information reference signal resources.

Dynamic channel state information reference signals (CSI-RS) resource mapping configuration for precoded channel state information reference signals (CSI-RS) configurations

Growing community of inventors

Issy les Moulineaux, France

Marco Maso