Nokia Technologies Oy

Nokia Solutions and Networks Oy

Cellular Communications Equipment LLC

Sunplus Mmobile Inc.

Beijing Xiaomi Mobile Software Co., Ltd.

Nokia Siemens Networks Oy

Other

Nokia Corporation

Hmd Global Oy

Chunli Wu

Chunhai Yao

Samuli Heikki Turtinen

Benoist Sebire

Jussi-Pekka Koskinen

Timo Koskela

Claudio Rosa

Henri Markus Koskinen

Guillaume Decarreau

Peter Skov

Esa Mikael Malkamaki

Elena Virtej

Esa Mikael Malkamäki

Woonhee Hwang

Sami Hakola

Xiaoyi Wang

Dawid Koziol

Tero Henttonen

Lei Du

Tao Tao

Timo Erkki Lunttila

Frank Frederiksen

Jorma Johannes Kaikkonen

Jarkko Tuomo Koskela

Zexian Li

Mihai Enescu

Yuantao Zhang

Juha Sakari Korhonen

Malgorzata Tomala

Jari Petteri Lunden

Li Ni Zhang

Lars Dalsgaard

Klaus Ingemann Pedersen

Deshan Miao

Haitao Li

Daniela Laselva

Troels Emil Kolding

Suresh P Nair

Amaanat Ali

Mads Lauridsen

Matti Einari Laitila

Li Zhang

Ping-Heng Kuo

Chun Hai Yao

Jie Lin

Tsung-Liang Lu

Yanji Zhang

Chung-Shan Wang

Yong Teng

Matha Deghel

Ping Yuan

Ahlem Khlass

Matti Jokimies

Lianghai Ji

Pingping Wen

Petteri Lunden

Jian Feng Qiang

Benoist P Sebire

Yen-Chen Chen

Jing He

Istvan Zsolt Kovacs

Anna Pantelidou

Jiang Chang

Yan Zhang

Jani Matti Johannes Moilanen

Benoist Sébire

Zhang Li

Naizheng Zheng

Nuno Pratas

Jianhua Liu

Dawei Wu

Esa Malkamäki

Benoist Pierre Sébire

Chien-Cheng Kuo

Jiezhen Lin

Li-Cheng Lin

Chih-Wen Chang

Dave Randall

Jianfeng Qiang

Benoist Pierre Sebire

Juha S Korhonen

Embodiments of the present disclosure relate to selecting random access (RA) mode. In example embodiments. The method comprises obtaining an impact factor associated with RA of a terminal device to a network device, the impact factor indicating at least one of the following: a synchronization status between the terminal device and the network device, a status of a channel between the terminal device and the network device for performing RA, a capability of the terminal device for supporting early data transmission (EDT), a predefined access category of the terminal device, or a RA mode-related indication received from the network device; selecting a RA mode at least in part based on obtained impact factor; and performing RA to the network device with the selected RA mode. In this way, the terminal device may select different RA mode according to different scenario.

Selection of random access mode

Disclosed are devices supporting an enhanced paging procedure for random access or small data transmission. An example UE may include at least one processor and at least one memory including computer program code. The at least one memory and the computer program code may be configured to, with the at least one processor, cause the UE to receive a paging message from a network device and transmit a signal to the network device using an UL grant. The paging message may include an identity of the UE (UE ID) and the UL grant. The related methods, apparatuses and computer program products are also disclosed.

Enhanced paging procedure for random access or small data transmission

The disclosure relates a method comprising: determining that buffered data is available for transmission and cannot be transmitted over allocated resources; and causing information indicating that buffered data is available for transmission and cannot be transmitted over allocated resources to be transmitted over the allocated resources.

Method, apparatus, computer program product and computer program

Example embodiments of the present disclosure relate to partial integrity protection in telecommunication systems. According to embodiments of the present disclosure, there is provided a solution for implementing partial integrity protection. The terminal device receives configuration of the partial integrity protection and applies the integrity protection on a portion of data packets which are communicated between communication devices. In this way, the communication devices can always provide integrity protection for services, regardless of their bit rate. Thus, security of communication can be improved. It also allows to provide integrity protection with limited impacts to power consumption and overheating.

Partial integrity protection in telecommunication systems

The present disclosure relates to a solution on cell off indication via DCI. In particular, a group common DCI format is used to indicate an activation/deactivation of the cell off for entering network energy saving mode. DCI in the group common DCI format may include separate bits for a first indication regarding the activation/deactivation of the cell off for entering network energy saving mode and a second indication regarding the activation/deactivation of cell DTX/DRX. Alternatively, the DCI may include common bits for the first and second indications with a flag to indicate which indication. In this way, the cell off for entering network energy saving mode can be indicated more efficiently.

Cell off indication via downlink control information

Embodiments of the present disclosure relate to for conditionally skipping monitoring of downlink control channel in random access. A first apparatus receives, from a second apparatus, a command indicating the first apparatus to skip monitoring a downlink control channel between the second apparatus and the first apparatus for a time period. The first apparatus initiates an RA procedure towards the second apparatus. The time period at least partially overlaps with a time window associated with the RA procedure and an end of the time period is after an end of the time window. The first apparatus determines whether the RA procedure is successfully completed or contention resolution for the RA procedure is successful. Based on the determination, the first apparatus ignores or performs the command after the end of the time window.

Conditional skipping monitoring of downlink control channel

According to embodiments of the present disclosure, service-based retransmission scheme for uplink in NTN has been proposed, which can support multiple retransmission schemes based on service type for uplink. The network device determines different retransmission schemes based on the QoS requirements of the services. The terminal device selects the retransmission scheme for the service. In this way, the QoS of different service and reliability of MAC CE can be guaranteed.

Service based uplink retransmission

Example embodiments of the present disclosure relate to a device, method, apparatus and computer readable storage medium of scheduling request (SR) and random access (RA) triggering for small data transmission (SDT). In example embodiments, a terminal device receives, from a network device, a configuration of one or more configured grant (CG) resources for a SDT procedure and a list of one or more data radio bearers (DRBs) associated with respective logical channels (LCHs) allowed for SDT over at least one of the one or more CG resources. After the terminal device initiates the SDT procedure in an inactive mode, if the terminal determines that a buffer status report (BSR) is triggered, the terminal device determines whether a configuration of a SR mask is to be applied for a LCH configured for SDT.

Scheduling request and random access triggering for sdt

Embodiments of the present disclosure relate to devices, methods, apparatuses and computer readable storage media of blind user equipment (UE) specific timing advance group (TAG) indication. The method comprises: determining, at a first apparatus, whether an association between at least one TAG associated with a SpCell of the first apparatus and respective one or more indices in an RAR is obtained from a second apparatus; and determining, based on the determination of the association, an applicability of the RAR for a random access procedure of the first apparatus.

Timing advance group indication

Embodiments of the present disclosure relate to dynamic active time trigger in CFRA. A first device receives a random access request from a second device in a discontinuous reception mode. The first device transmits a random access response to the second device. The random access response comprises at least one of: an indicator of an offset between a reception of the random access response and a start of monitoring scheduling information from the first device, or a flag indicating whether the indicator is present in the random access response. The first device transmits the scheduling information to the second device based on the offset.

Dynamic active time trigger in contention free random access

Embodiments of the present disclosure relate to beam reporting triggered by data transmission. A first device receives from a second device configuration information concerning at least one candidate beam for serving the first device. The first device determines whether data is available for transmission from the first device to the second device. If the data is available for transmission, the first device selects at least one first reference signal identifying the at least one candidate beam based on the configuration information. The first device transmits information concerning the selected at least one first reference signal to the second device.

Beam reporting triggered by data transmission

Example embodiments of the present disclosure relate to a solution for determining a contention resolution timer. In an aspect, a first device receives, from a second device, an indication to perform Msg3 transmission. The first device transmits, to the second device, information of the first device for contention resolution. In case a configuration of a 4-step random access channel is unavailable in an active bandwidth part for the first device, the first device determines a duration for monitoring a contention resolution message based on one of: a first configuration of a 2-step random access channel in the active bandwidth part, or a second configuration of a 4-step random access channel in a bandwidth part different from the active bandwidth part. Example embodiments of the present disclosure can improve the performance of a random access procedure.

Determination of contention resolution timer

Embodiments of the present disclosure relate to for enabling retransmission of an initial transmission of CG-SDT. A first device selects a first configured uplink grant for retransmission of an initial transmission of CG-SDT. A first TBS associated with the first configured uplink grant is comparable to a second TBS associated with a second configured uplink grant for the initial transmission of CG-SDT. The first device performs the retransmission to a second device based on the first configured uplink grant.

Enabling retransmission of initial transmission of the CG-SDT

Embodiments of the present disclosure relate to methods, devices, apparatuses, and computer readable medium for small data transmission (SDT). A first device, in response to first data to be transmitted via a SDT corresponding to a first set of resources for a random access procedure and a second set of resources for a configured grant procedure, determine a target resource for at least a part of the first data based on a logical channel restriction on the SDT; and transmit, to a second device, at least the part of the first data on the target resource. In this way, the SDT procedure can be performed with logical channel restrictions, which allows a better isolation of services through specific resource selection. The communication efficiency and network performance can also be improved.

Enhancements on small data transmission

Example embodiments of the present disclosure provide a solution for handling expiry of at least one time alignment timer (TAT) of multiple timing advance groups (TAGs) associated with a serving cell. In an example method, the terminal device receives determines at least two TAGs for a serving cell, wherein the at least two TAGs comprise a primary TAG and a secondary TAG. The terminal device determines whether at least one TAT of the at least two TAGs has expired and maintain, based on determining that the at least one TAT has expired, one of the primary TAG and the secondary TAG. In this way, only a single TAG is maintained once the terminal device has single TAT/no TAT running removing ambiguities in RA procedure/UL signal transmissions. Since the network is aware of the TAT expiry, it knows behaviour of the terminal device and can act accordingly.

Handling TAT expiry of multiple TAGs

Growing community of inventors

Beijing, China

Chunli Wu