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公开(公告)号：WO2023062548A1
公开(公告)日：2023-04-20
申请号：PCT/IB2022/059761
申请日：2022-10-11
Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Inventor： FOTI, George , HEDMAN, Peter
Abstract: Systems and methods are disclosed for Network Slice Admission Control Function (NSACF) triggered User Equipment (UE) deregistration. In one embodiment, a method performed in a communications system comprises, at a NSACF, determining that one or more UEs need to be deregistered from a particular network slice and, responsive to determining that one or more UEs need to be deregistered from the particular network slice, sending a request to a network node to deregister one or more UEs from the particular network slice. The method further comprises, at the network node, receiving the request from the NSACF and deregistering one or more UEs from the particular network slice in response to receiving the request.
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公开(公告)号：WO2023037340A1
公开(公告)日：2023-03-16
申请号：PCT/IB2022/058590
申请日：2022-09-12
Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Inventor： MIKLÓS, György , VARGA, Balázs , FARKAS, János
Abstract: Systems and methods are disclosed for redundant Protocol Data Unit (PDU) session establishment. In one embodiment, a method performed by a network node for redundant PDU session establishment comprises providing, to a Wireless Communication Device (WCD), data indicative of instructions to the WCD to establish one or more redundant PDU sessions for one or more PDU sessions, wherein the one or more PDU sessions comprise: (a) one or more ongoing PDU sessions, (b) one or more future PDU sessions, or (c) both (a) and (b). In this manner, the need to configure the WCD with information for triggering redundant PDU sessions is avoided, which in turn reduces WCD complexity. Further, by allowing the network to control triggering of redundant PDU sessions, it is easier to change the use of redundancy mechanisms, e.g., based on need.
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公开(公告)号：WO2022238838A1
公开(公告)日：2022-11-17
申请号：PCT/IB2022/054208
申请日：2022-05-06
Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Inventor： CHRISTOFFERSSON, Jan , ENBUSKE, Henrik
IPC: H04W72/12 , H04W72/1268 , H04W72/1284
Abstract: Systems and methods for transmitting an end marker for Small Data Transmissions (SDT) from a User Equipment (UE) to a base station (gNB) are provided. In some embodiments, the UE detects a condition that indicates that transmission of an end marker is to occur. The end marker is an indication that the UE: (a) has no data for uplink transmission using a Configured Grant (CG) SDT configuration, (b) expects no data for uplink transmission using the CG-SDT configuration for a time period, or both (a) and (b). In response to the detection, the UE transmits the end marker to the network node.
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公开(公告)号：WO2022208485A1
公开(公告)日：2022-10-06
申请号：PCT/IB2022/053122
申请日：2022-04-04
Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Inventor： LIN, Zhipeng , ZOU, Zhenhua , BLANKENSHIP, Yufei
IPC: H04W56/00
Abstract: Systems and methods are disclosed for enhanced transmit and receive performance for time synchronization. In one embodiment, a method performed by an access node for a wireless network comprises receiving a Physical Random Access Channel (PRACH) preamble from a User Equipment (UE) and deriving timing-related information based on 5 the PRACH preamble in accordance with a defined uplink signal timing detection error requirement, the defined uplink signal timing detection error requirement being stricter than a respective uplink signal timing detection error requirement defined in Release 15 and 16 of Third Generation Partnership Project (3GPP) New Radio (NR) specifications for a subcarrier spacing used for the PRACH preamble. The method further comprises 0 sending the timing-related information to the UE. In this manner, enhanced time synchronization performance can be achieved.
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公开(公告)号：WO2022208400A1
公开(公告)日：2022-10-06
申请号：PCT/IB2022/052972
申请日：2022-03-30
Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Inventor： LIN, Zhipeng , ZOU, Zhenhua , BLANKENSHIP, Yufei
Abstract: Systems and methods are disclosed for time synchronization in a wireless communication network. In one embodiment, a method performed by a wireless communication device comprises transmitting, to an access node, a signal for enhanced uplink timing estimation, wherein the signal occupies more or separate physical resources as compared to a corresponding signal transmitted for a purpose other than enhanced uplink timing estimation. The method further comprises receiving, from the access node, a message comprising timing-related information or clock time, responsive to transmitting the signal for enhanced uplink timing estimation. In this manner, the wireless communication network is able to meet enhanced timing error requirements, e.g., when inter-working with a Time Sensitive Network (TSN).
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Patent Agency Ranking
公开(公告)号：WO2022201073A1
公开(公告)日：2022-09-29
申请号：PCT/IB2022/052675
申请日：2022-03-23
Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
IPC: H04L5/00
Abstract: Systems and methods for handling serving and non-serving cells having different frequency domain reference points for reference signal sequence generation are disclosed. In one embodiment, a method performed by a wireless communication device (WCD) comprises obtaining information about a frequency domain reference point to be used for one or more reference signals on a non-serving cell of the WCD and applying the information about the frequency domain reference point to be used for the one or more reference signals on the non-serving cell of the WCD to receive or transmit one or more reference signals on the non-serving cell of the WCD. In this manner, inter-cell operation is enabled for a UE for cases when a network deployment uses different reference points for reference signal sequence generation for different cells.
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公开(公告)号：WO2022157734A1
公开(公告)日：2022-07-28
申请号：PCT/IB2022/050601
申请日：2022-01-24
Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Inventor： KELLER, Ralf , FOTI, George
Abstract: Providing Roaming Value Added Service (RVAS) network function for Home Public Land Mobile Network (HPLMN) is disclosed herein. In some embodiments, a Home Network Repository Function (H-NRF) in an HPLMN of a telecommunications network obtains information about a Home Control Network Function (NF) and a Roaming Control NF. A Visited NF in a Visited Public Land Mobile Network (VPLMN) sends a discovery request to the H-NRF in the HPLMN. The H-NRF receives the discovery request from the Visited NF in the VPLMN, and determines that, for the discovery request and the VPLMN, RVAS is applicable. The H-NRF selects the Roaming Control NF and the Home Control NF for the discovery request, and transmits, to the Visited NF, a response to the discovery request, the response comprising an address of the selected Roaming Control NF instead of an address of the selected Home Control NF.
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公开(公告)号：WO2022153256A1
公开(公告)日：2022-07-21
申请号：PCT/IB2022/050322
申请日：2022-01-14
Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Inventor： KELLER, Ralf , HEDMAN, Peter , CENTONZA, Angelo
Abstract: Redirection and retry of registration is disclosed herein. In some embodiments, a User Equipment (UE) of a Next Generation Radio Access Network (NG-RAN) is adapted to transmit a Non-Access Stratum (NAS) registration request comprising one or more Single-Network Slice Selection Assistance Information (S-NSSAI), indicated as one or more requested S-NSSAI. The UE is further adapted to receive, in an Access Stratum (AS) protocol, an AS-level registration reattempt indication to instruct the UE to reattempt the NAS registration request in a target cell. The UE is also adapted to reattempt the NAS registration in the target cell, responsive to receiving the AS-level registration reattempt indication.
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公开(公告)号：WO2022097098A1
公开(公告)日：2022-05-12
申请号：PCT/IB2021/060285
申请日：2021-11-05
Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Inventor： SEDLACEK, Ivo , WASS, Mikael
Abstract: Systems and methods for enabling User Equipments (UEs) to use a Public Land Mobile Network (PLMN) failing service under disaster conditions and to receive services from alternative PLMNs. In some embodiments, a method performed by a first network node comprises receiving, from a second network node, a first disaster roaming PLMN list. The method also comprises determining that a UE is to be authenticated. The method further comprises providing, to a third network node, a request including the disaster roaming PLMN list, responsive to determining that the UE is to be authenticated. In this way, an interruption of the service at the UE is minimized in case of the disaster conditions.
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公开(公告)号：WO2022064264A1
公开(公告)日：2022-03-31
申请号：PCT/IB2020/059066
申请日：2020-09-28
Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Inventor： DAUNERIA, Ankur , FOTI, George
IPC: H04W36/00
Abstract: Systems and methods are disclosed herein for network-initiated slice-based handover in a cellular communications system. In one embodiment, a method in a cellular communications system comprises, at a network node in a core network of the cellular communications system, detecting a triggering event for a network slice handover for a session of a particular wireless communication device. The method further comprises, at the network node and responsive to detecting the triggering event, identifying a target network slice for the network slice handover and sending, to a Policy and Control Function (PCF) in the core network, a message that initiates a network slice handover of the session from a source network slice to the target network slice. The method further comprises, at the PCF, receiving the message that initiates the network slice handover and performing an action to cause the network slice handover.
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