Telefonaktiebolaget Lm Ericsson (publ)

China Mobile Communications Corporation

Jens Bergqvist

Paul Schliwa-Bertling

John Walter Diachina

Mårten Sundberg

Nicklas Johansson

Patrik Rugeland

Ulf Händel

Johan Rune

Pontus Wallentin

Icaro L J Da Silva

Janne Peisa

Andreas Bergström

Oumer Teyeb

Olof Liberg

Helka-Liina Määttanen

Pradeepa Ramachandra

Mattias Bergström

Oscar Ohlsson

Ivo Sedlacek

Pål Frenger

Stefan Wager

Osman Nuri Can Yilmaz

Jari Tapio Vikberg

Rui Fan

Johan Mikael Bergman

Henning Wiemann

Niklas Johansson

Håkan Axelsson

Riikka Susitaival

Ali Nader

Henrik Enbuske

Christofer Lindheimer

Ritesh Shreevastav

Sara Modarres Razavi

Zhenhua Zou

Björn Hofström

Claes-Göran Persson

Antonino Orsino

Icaro Leonardo Da Silva

Stefan Eriksson Löwenmark

Hans Krister Mikael Sällberg

Stefan Engström

Cecilia Eklöf

Thomas Johansson

Anders Molander

Daniel Widell

Julien Muller

Karin Hedén

Birgitta Sagebrand

Stephen R Hayes

Icaro Leonardo J Da Silva

Marten Sundberg

Mattias BERGSTRÖM

Sebastian Lindqvist

P&auml;r I Gustavsson

Hans Torstensson

Joakim Riedel

Hákan Axelsson

Meysam Aghighi

Oumer Teyab

Sven Ekemark

Karin HEDÉN

Ulf HÄNDEL

Stefan Eriksson LÖWENMARK

Björn HOFSTRÖM

Andreas BERGSTRÖM

Liwei Qiu

Kai-Erik Sunell

Bjorn Hofstrom

Embodiments include methods for a UE to perform mobility operations in a wireless network based on conditions related to data traffic. Such methods include receiving, from a network node, one or more conditional reconfigurations. Each includes a reconfiguration message associated with a candidate target cell and one or more execution conditions that need to be fulfilled to apply the reconfiguration message when performing a mobility operation, including at least one first execution condition related to UE data traffic and/or to one or more UE applications. Such methods include monitoring for the execution conditions in the conditional reconfigurations and based on detecting fulfillment of one or more execution conditions in a particular conditional measurement configuration, performing a mobility operation towards the candidate target cell associated with the reconfiguration message in the particular conditional measurement configuration. Other embodiments include complementary methods by a network node, as well as UEs and network nodes

Conditional reconfiguration based on data traffic

An example wireless device () in a dormant state improves its selection of a camping cell by accounting for multi-cell configurations. Among other things, a multi-cell configuration may improve throughput between a wireless communication network () and the wireless device (), based on the network () serving the wireless device () from two or more cells (). By camping on a cell () that belongs to a multi-cell configuration that is possible for the wireless device (), the wireless device () reduces the time and signaling needed to establish that multi-cell configuration, upon the wireless device () connecting to the network () via the camping cell. Accounting for multi-cell configurations may be done jointly, along with accounting for conventional priorities, such as conventionally-prioritized frequencies and Radio Access Technologies (RATs) and may be incorporated into the ranking of cells () based on per-cell radio-signal measurements.

Method and apparatus for cell selection in a wireless communication network

Methods of operating a user equipment UE are discussed. An access category may be determined from a plurality of access categories and at least one access identity may be determined from a plurality of access identities to be applied for an access attempt. An establishment cause may be determined for the access attempt based on the access category determined from the plurality of access categories and based on the at least one access identity from the plurality of access identities. A connection request message for the access attempt may be transmitted to a wireless communication network, with the connection request message including the establishment cause determined based on the access category and based on the at least one access identity. Related devices are also discussed.

Methods of determining access categories and/or establishment causes and related devices

Methods performed by wireless device for filtering relevant early measurement results are provided. Operations of such methods include obtaining multiple idle/inactive measurement results while the wireless device is in an idle/inactive state and transitioning from the idle/inactive state to an active state. Operations may include, responsive to transitioning from the idle/inactive state to the active state, selecting a subset of the idle/inactive measurement results based on capabilities of frequencies associated with idle/inactive measurement results to be used by the wireless device. Operations may further include transmitting the subset of the idle/inactive measurement results to a network node in a wireless communication network.

Filtering relevant early measurement results

According to some embodiments, a method performed by a wireless device for performing early measurement comprises receiving an early measurement configuration for performing idle/inactive mode measurements. The early measurement configuration comprising a measurement carrier list. Each entry of the measurement carrier list comprises a carrier frequency and one or more cell identifiers associated with the carrier frequency for which the wireless device is to perform idle/inactive mode measurements. The early measurement configuration further comprises a validity area list, separate from the measurement carrier list. Each entry of the validity area list comprises a carrier frequency and zero or more cell identifiers associated with the carrier frequency for which the wireless device is supposed to perform idle/inactive mode measurements. The method further comprises reselecting to a new cell and determining whether to perform idle/inactive mode measurements while camping on the new cell based on the validity area list.

Validity area for early measurement

In one aspect, a wireless device is adapted to perform idle mode measurements. The wireless device performs and stores one or more radio signal measurements while in an idle mode or inactive state. The wireless device also deletes the stored radio signal measurements in response to any one of a number of events, such as receiving a RRC release message that does not include an idle mode measurement configuration, receiving an RRC release message while in RRC Connected state, receiving a handover message, or receiving a reconfiguration message adding a secondary cell for carrier aggregation.

Handling of idle measurement results in RRC_connected

Systems and methods related to early measurement reporting are disclosed. In some embodiments, a method performed by a wireless device in a cellular communications system comprises transmitting measurements with a first message to a network node. The first message is a request to resume a connection of the wireless device with a target cell, and the measurements are measurements performed by the wireless device while in a dormant state. Corresponding embodiments of a wireless device are also disclosed. Embodiments of a method of operation of a wireless device for reception of a request for early measurements in association with a paging message and corresponding embodiments of a wireless device are also disclosed. Embodiments of methods of operation of a network node and corresponding embodiments of a network node are also disclosed.

Early measurement reporting with RRC resume request message and indication of request for early measurements in association with paging

Systems and methods for early measurement reporting with a Radio Resource Control (RRC) resume complete like message are disclosed. Embodiments of a method performed by a wireless device and corresponding embodiments of a wireless device are disclosed. In some embodiments, a method performed by a wireless device comprises receiving, from a network node, an indication with a first message to resume a connection with a target cell. The indication is an indication that the wireless device is to include measurements performed by the wireless device while in a dormant state with a second message that indicates that resuming of the connection with the target cell is complete. The method further comprises transmitting, to the network node, the measurements performed by the wireless device while in the dormant state with the second message.

Early measurement reporting with RRC resume complete like message

Embodiments include methods for a network node, of a radio access network (RAN), that provides a cell serving one or more user equipment (UEs). Such methods include determining a restriction to requests for on-demand delivery of system information blocks (SIBs) by at least one UE operating in the cell; and transmitting, to the at least one UE, one or more parameters associated with the restriction. Exemplary parameters include prohibit timer values and maximum number of SIBs or SIB segments that a UE can request. Other embodiments include complementary methods whereby a UE can transmit, to the network node, a request for on-demand delivery of one or more particular SIBs in accordance with the received parameters associated with the restriction. Other embodiments include network nodes and UEs configured to perform such methods.

Enhanced on-demand request procedures for obtaining various system information

A method performed by a User Equipment, UE, to perform handover from a source access node to a target access node is provided. The UE, the source access node andthe target access node are operating in a wireless communications network. The UE receives () a handover command message from the source access node. The UE establishes () a target radio connection with the target access node, and determines () whether or not a source cell release criterion is fulfilled. When the source cell release criterion is determined to be fulfilled, the UE releases () a source radioconnection with the source access node.

User equipment and methods therein for performing handover

A process allows a UE to acquire a System Frame Number (SFN) before accessing a target base station/node during a RACH-less handover. The SFN may be provided to the UE in various ways. For example, the SFN may be provided as part of a handover command message (e.g., RRCReconfiguration) or a master information block (MIB). In this manner, the UE acquires the SFN before accessing the target base station/node, which allows the target base station/node and the UE to effect certain timings for the handover. For example, the target base station/node and the UE may set time bounds in which the handover must occur. As another example, different types of uplink grants may be set.

Aligned configuration for random access channel-less handover/secondary cell group change

A method by a user equipment in a wireless communication system includes receiving an access command from a source node, the access command instructing the UE to access a target cell and including an access configuration specifying an access method without random access and one or more valid target cell beams for which the access configuration is valid at the target cell, and accessing the target cell in response to the access command.

Beam limitations for RACH-less access

Systems and methods for triggering measurements before the completion of connection resumption are provided. In some embodiments, a method performed by a wireless device for performing measurements where a current Radio Resource Control (RRC) status is: IDLE or INACTIVE. The method includes monitoring for a potential reception of a downlink message in a cell that the wireless device is camping on; detecting, based upon the reception of the downlink message, information regarding performing measurements; performing measurements based on the information regarding performing the measurements; and reporting the measurement results. In some embodiments, the message is a paging message or a message multiplexed with the paging message. In this way, latency might be reduced to start performing measurements. This early availability of measurements at the target cell might increase the speed at which the wireless device acquires wireless connections such as Carrier Aggregation (CA) or Dual Connectivity (DC) connections.

Triggering measurements before the completion of connection resumption

A method for measurement reporting performed by a wireless device includes obtaining a beam measurement configuration from a network. Based on the beam measurement configuration, the wireless device performs at least one beam measurement while operating in a dormant state. The wireless device reports a result of the at least one beam measurement to the network. The reporting is done after a transition from the dormant state to a connected state.

Beam information in early measurements

Systems and methods are disclosed herein that provide reporting of early measurements in a cellular communications system. Embodiments of a method performed by a wireless device are disclosed. Early measurements are also referred to herein as dormant mode measurements. In some embodiments, a method performed by a wireless device includes performing one or more dormant mode measurements, where the one or more dormant mode measurements are one or more measurements performed by the wireless device while the wireless device is in a dormant mode. The method further includes storing the one or more dormant mode measurements, identifying a reporting scheme to be used by the wireless device to report dormant mode measurements, and reporting at least one of the stored dormant mode measurements in accordance with the identified reporting scheme. Corresponding embodiments of a wireless device are also disclosed.

Flexible early measurement reporting

Growing community of inventors

Linköping, Sweden

Jens Bergqvist