Telefonaktiebolaget Lm Ericsson (publ)

Guangdong Oppo Mobile Telecommunications Corp., Ltd.

Gerardo Agni Medina Acosta

Johan Mikael Bergman

Andreas Höglund

Yutao Sui

Waikwok Kwong

Yi-Pin Eric Wang

Cagatay Konuskan

Sandeep Narayanan Kadan Veedu

Emre Yavuz

Billy Hogan

Xingqin Lin

Erik G Larsson

Ritesh Shreevastav

Anders K Eriksson

Florent Munier

Mark Curran

Nianshan Shi

Chunhui Zhang

Tuomas Tirronen

Hazhir Shokri Razaghi

Muhammad Ali Kazmi

SaiRamesh Nammi

Santhan Thangarasa

Ari Kangas

Fredrik Ovesjö

Kazuyoshi Uesaka

Cecilia Eklöf

Yuhang Liu

Hongxia Zhao

Göran Kronquist

Iana Siomina

Fredrik Gunnarsson

Olof Liberg

Jie Chen

Stefan Wänstedt

Yuan Wang

Anders Wallén

Christopher Peter Callender

Christian Bergljung

Sara Modarres Razavi

Stefania Sesia

Dung Pham Van

Talha Khan

Andreas Andersson

Liping Zhang

Stéphane Tessier

Göran Bergman

Andreas Hoglund

Yin-Pin Eric Wang

Ola Lundqvist

Cecilia EKLÖF

Anders Eriksson

Stefan WÄNSTEDT

Andreas HÖGLUND

Fredrik OvesjÖ

Systems and methods for determining timing advance (TA) validity are disclosed. In some embodiments, systems and methods are disclosed herein in which a wireless device implicitly considers a TA to be valid in a full cell when no TA validation mechanisms are explicitly configured. In other embodiments, systems and methods are disclosed herein in which a timer serves a dual purpose. If the timer is set to infinity, a wireless device will always consider a TA to be valid within a given cell, and at the same time will disable other TA validation mechanisms. Otherwise, the wireless device will interpret the timer as indicating for how long the TA value that the wireless device possesses is considered to be valid. Benefits of the solutions described herein include reducing signaling bits in the configuration and avoiding the possibility of conflicting configurations.

Preconfigured uplink resources—configuration for TA validity in entire cell

Methods, a network node, a wireless device, and computer readable storage medium for 16-QAM based communication are disclosed. A method includes: determining a resource allocation for 16-QAM based communication for the wireless device; and indicating, to the wireless device, a TBS and/or a number of allocated time-domain resources that are associated with the determined resource allocation using a TBS index and a time-domain resource index, wherein the TBS index and the time-domain resource index are determined in accordance with a table for allocating transport blocks and/or number of allocated time-domain resources for the 16-QAM based communication.

Methods, network node, wireless device, media for 16-QAM based communication

Techniques for facilitating dedicated transmissions over preconfigured uplink resources. Embodiments include techniques to configure subsequent PUR resource utilization (e.g., one-at-a-time basis or on a periodic basis), changes to EDT signaling to allow functioning with PUR, etc. An example method performed by a wireless device configured for use in a wireless communication network includes transmitting (), in an uplink message, a request for a configuration of preconfigured uplink resources. The method further includes receiving (), during a connected mode in which the wireless device has a connection with the wireless communication network, control signaling indicating a first preconfigured resource configuration that configures a first preconfigured resource. The method also includes transmitting or receiving () user data using the first preconfigured resource.

Support for transmission in preconfigured UL resources

Systems and methods for selecting subcarriers to be used for sub-Physical Resource Block (PRB) transmission and, in some embodiments, for mapping Demodulation Reference Signals (DMRS) to resources on the selected subcarriers are disclosed. In some embodiments, a method of operation of a radio node for providing sub-PRB transmission comprises selecting two adjacent subcarriers from a set of three allocated subcarriers that are allocated for a sub-PRB transmission that uses Single Carrier Frequency Division Multiple Access (SC-FDMA) Pi/2 Binary Phase Shift Keying (BPSK) modulation using only two adjacent subcarriers out of the set of three allocated subcarriers with Discrete Fourier Transform (DFT) spread length of 2. In some embodiments, the selection is such that the selected adjacent subcarriers varies, e.g., from one cell to another. In doing so, interference is distributed.

Systems and methods for selecting subcarriers for sub-PRB transmissions

Systems and methods for handling transmissions and retransmissions on a periodic preconfigured uplink resource (PUR) are provided. Respective resources for transmission and retransmission can be determined and configured for a wireless device to prevent blocking of a new data transmission on a PUR opportunity by a retransmission attempt. Responsive to determining that a first transmission on the PUR was unsuccessful, a second resource can be configured for the retransmission.

Retransmission handling for preconfigured uplink resources

A User Equipment, UE (), determines paging occasions that are associated with a Narrowband Reference Signal, NRS, from a plurality of paging occasions based on a common timing reference between a Radio Access Network, RAN, node () and the UE (). The RAN node () transmits, to the UE () the NRS on paging occasions based on the common timing reference.

Methods and apparatuses for determining paging occasions associated with narrowband reference signal (NRS)

A wireless communication device () conditions its use of Preconfigured Uplink Resources (PUR), as preconfigured by a wireless communication network (), on assessing the validity of a Timing Advance (TA) value used by the device () for controlling its uplink transmission timing. The device () maintains a timer () and deems the TA value to be invalid upon expiration of the timer (). In an example case, a device () operating in idle mode performs a PUR-based transmission in dependence on the timer () not being expired. A radio network node () of the network () maintains a like timer (), to maintain an awareness of TA validity at the device () and, for example, sends an updated TA for the device () upon receiving a PUR-based transmission from the device (). The device () and the node () may refresh their respective timers, in association with the TA update.

Methods and apparatuses for using preconfigured uplink resources in a wireless communication network

Methods of operating a network node in a communication network are provided. Operations according to such methods include receiving a transmission that is sent by a user equipment, UE, and that is received over a preconfigured uplink resource, PUR and selecting one or more transmission types for indicating feedback corresponding to the received transmission conditioned to having been successfully received.

Methods and devices for managing transmissions in a wireless communications network

A wireless device performs an uplink transmission, such as an idle-mode uplink transmission using preconfigured uplink resources (PUR). The wireless device determines whether a serving-cell signal measurement M2 was completed within a predetermined range of time before a reference time T2, the reference time T2 corresponding to an uplink transmission opportunity. Responsive to determining that the serving-cell signal measurement M2 was not completed within the predetermined range of time, the wireless device either defers transmission to a subsequent transmission opportunity, or drops the uplink transmission, or collects an additional serving-cell measurement M2' that falls within the predetermined range of time, for use in validating a TA for transmitting at the transmission uplink opportunity and/or for estimating a PL for power control of a transmission at the uplink transmission opportunity.

Methods for validating measurements for reliable PUR transmissions

A technique for transmitting system information for a time-division duplex, TDD, communication in a radio access network, RAN, is described. As to a method aspect of the technique, a master information block, MIB, is transmitted on an anchor carrier () of the TDD communication in the RAN. The MIB is indicative of a spectral resource (--) allocated to a system information block, SIB, of the TDD communication in the RAN. The SIB is transmitted on the spectral resource (--) indicated in the MIB.

Technique for transmitting system information

A method, network nodes and wireless devices for scheduling transmissions over preconfigured uplink resources (PUR) are disclosed. According to one aspect, a method is performed by a network node for scheduling a plurality of wireless devices with periodic preconfigured uplink shared channel resources. The method includes configuring a wireless device of the plurality of wireless devices with preconfigured uplink resources, PURs, the PURs having a transmission length and a periodicity, the PURs being configured based at least in part on one or more multiplexing criteria for multiplexing the plurality of wireless devices for PUR transmission.

Scheduling transmissions over preconfigured uplink resources

A base station and wireless device are configured to support TDD operation. In exemplary embodiments, the base station or UE can make use of the available symbols in the DwPTS or UpPTS of a special subframe respectively for NB-IoT transmissions. In one example, the base station can use OFDM symbols in the DwPTS to repeat in a predetermined manner some of the symbols transmitted in an immediately preceding downlink subframe, or in a succeeding downlink subframe. In other embodiments, the UE can use symbols in the UpPTS to repeat in a predetermined manner some of the symbols transmitted in the immediately succeeding uplink subframe, or in a preceding uplink subframe. The symbols repeated in the special subframe can be coherently combined at the receiver with corresponding symbols transmitted in a downlink or uplink subframe to improve decoding performance, reduce errors, improve channel estimation, and increase system capacity.

Special subframe utilization for NB-IoT transmission in TDD mode

Apparatuses and methods are disclosed for SIB1-NB transmission. In one embodiment, a method performed by a network node configured to include a scheduling information parameter in a master information block, MIB, and communicate the MIB to a wireless device, the scheduling information parameter usable to schedule a system information block type 1 for narrow band communication, SIB1-NB, for a time division duplex, TDD transmission is provided. The method comprising indicating the SIB1-NB scheduling information for TDD at least in part by a value of the scheduling information parameter being associated with a predefined entry in at least one TDD-specific table, the indicated SIB1-NB scheduling information including: at least one subframe to use for the SIB1-NB transmission; a number of repetitions of the SIB1-NB transmission; and a transport block size, TBS, to use for the SIB1-NB transmission.

SiB1-NB transmissions for NB TDD communication

Growing community of inventors

Märsta, Sweden

Gerardo Agni Medina Acosta