公开(公告)号：US10925004B2

公开(公告)日：2021-02-16

申请号：US16486830

申请日：2017-02-23

Applicant: Sony Mobile Communications Inc.

Inventor： Kåre Agardh ,  Vanja Plicanic Samuelsson ,  Rickard Ljung

IPC: H04W52/02

Abstract: A control message is indicative of a timing parameter of a slotted transmission (500) comprising active slots (501) and inactive slots (502). At least one repetition (351) of data (401) is transmitted in an active slot on a wireless link.

公开(公告)号：US10728929B2

公开(公告)日：2020-07-28

申请号：US16095350

申请日：2016-05-12

Applicant: Sony Mobile Communications Inc.

Inventor： Rickard Ljung

IPC: H04L12/28 ,  H04W74/08 ,  H04W72/12 ,  H04W74/00 ,  H04L5/00 ,  H04J1/16

Abstract: Apparatus, systems, and methods provide for transmitting a Sounding Reference Signal (SRS) or other reference signal over a cellular network operating on an unlicensed radio band. Specifically, an apparatus, such as a User Equipment (UE) or Base Station (eNB), determines one or more channel sensing metrics for a radio channel. Based on the channel sensing metrics, the apparatus then determines a Listen Before Talk (LBT) mode and/or a LBT sensing time. The UE then performs a LBT process using the LBT mode and the LBT sensing time. If the UE determines that the radio channel is not occupied, the UE transmits a signal, such as a control signal (e.g., a Sounding Reference Signal (SRS)), over the radio channel.

公开(公告)号：US10694504B2

公开(公告)日：2020-06-23

申请号：US16065093

申请日：2015-12-22

Applicant: Sony Mobile Communications Inc.

Inventor： Rickard Ljung ,  Peter C. Karlsson ,  Basuki Priyanto

IPC: H04W72/04 ,  H04L5/00 ,  H04W4/70 ,  H04L1/18 ,  H04W16/14

Abstract: Communication is implemented between at least one access node of a wireless network and a terminal attached to the wireless network. The communication is on at least one narrowband carrier (311-1, 311-2) comprising resources (308) in a first spectrum (301) and operating according to a first radio access technology, e.g., Narrowband Internet of Things, NB-IoT. The first spectrum (301) is arranged at least partly within a second spectrum (302) on which communication between the at least one access node and a second terminal is executed on a wideband carrier (312). The wideband carrier (312) comprises resources (308) in the second spectrum (302) and operates according to a second radio access technology different to the first radio access technology, e.g., Machine-Type Communication, MTC, or evolved UMTS radio access, E-UTRA. In some examples, the first spectrum (301) and the second spectrum (302) both may comprise a shared spectrum.

公开(公告)号：US10680691B2

公开(公告)日：2020-06-09

申请号：US16079863

申请日：2016-02-25

Applicant: Sony Mobile Communications Inc.

Inventor： Basuki Priyanto ,  Peter C. Karlsson ,  Rickard Ljung

IPC: H04B7/06 ,  H04B7/0452 ,  H04L1/18 ,  H04L1/08

Abstract: A beamforming parameter is determined. A number of transmission repetitions are determined according to the determined beamforming parameter. Message are communicated between an access node and at least one terminal on a radio link using a beamformed transmission which is based on the determined beamforming parameter. The messages comprise repetitions of data. A count of the messages having the repetitions of data corresponds to the determined number of transmission repetitions.

公开(公告)号：US10555343B2

公开(公告)日：2020-02-04

申请号：US15779701

申请日：2015-11-30

Applicant: Sony Mobile Communications Inc.

Inventor： Rickard Ljung ,  Kåre Agardh

IPC: H04W74/08 ,  H04W24/08 ,  H04W28/02 ,  H04W72/12

Abstract: A method for improving fairness among devices accessing a radio bandwidth. The devices include a mobile device using the radio bandwidth to access a radio access system using a channel access protocol, wherein the channel access protocol is a collision avoidance-type channel access protocol configured for using a back-off time before transmitting a retransmission (e.g., CSMA). Information is determined from the radio bandwidth. The information is analyzed to determine an adjusted back-off time. The mobile device implements the adjusted back off time before transmitting the retransmission over the radio bandwidth.

公开(公告)号：US10237867B2

公开(公告)日：2019-03-19

申请号：US15257146

申请日：2016-09-06

Applicant: SONY CORPORATION ,  SONY MOBILE COMMUNICATIONS INC.

Inventor： Kare Agardh ,  Vanja Plicanic Samuelsson ,  Rickard Ljung ,  Peter C. Karlsson

IPC: H04J3/00 ,  H04W72/04 ,  H04L29/06 ,  H04W74/08 ,  H04W84/12 ,  H04W88/08

Abstract: Methods of operating an electronic device are provided. A method of operating a first electronic device includes listening for a wireless transmission by a second electronic device on a wireless communications channel. The method includes determining whether a packet is a particular type of packet. The method includes assigning a randomized time delay value that defines a randomized delay period, in response to determining that the packet is the particular type of packet. The method includes beginning the randomized delay period in response to determining that the wireless communications channel is clear. Moreover, the method includes transmitting the packet via the wireless communications channel based on expiration of the randomized delay period. Related electronic devices and computer program products are also provided.

公开(公告)号：US10117271B2

公开(公告)日：2018-10-30

申请号：US14947757

申请日：2015-11-20

Applicant: Sony Mobile Communications Inc.

Inventor： Rickard Ljung

IPC: H04B17/318 ,  H04W74/08 ,  H04W16/14 ,  H04W56/00 ,  H04W74/00

Abstract: A base station of a cellular radio communications network configured to operate in an unlicensed radio band, comprising a radio transceiver connected to an antenna, and a controller including a processor and a memory holding computer program code. The processor is configured to execute the computer program code to realize a machine for determining a size for a contention window, within which the base station may transmit data from the transceiver to a radio terminal operating in the network; receiving a signal from the terminal, comprising an indication of occupancy of a radio channel, as detected by the terminal; adjusting the contention window size dependent on the indication of occupancy of the radio channel; transmitting data to the terminal within the adjusted contention window.

公开(公告)号：US10015672B2

公开(公告)日：2018-07-03

申请号：US15088170

申请日：2016-04-01

Applicant: SONY MOBILE COMMUNICATIONS INC.

Inventor： Anders Berggren ,  Rickard Ljung ,  Lars Nord ,  Linh Trang

IPC: H04M1/66 ,  H04W12/06 ,  H04W76/10 ,  H04W24/02 ,  H04W40/04 ,  H04W60/00 ,  H04W48/00 ,  H04W88/16 ,  H04W76/12 ,  H04W88/02 ,  H04W88/08 ,  H04W76/15

CPC classification number: H04W12/06 ,  H04W24/02 ,  H04W40/04 ,  H04W48/00 ,  H04W60/00 ,  H04W76/10 ,  H04W76/12 ,  H04W76/15 ,  H04W88/02 ,  H04W88/08 ,  H04W88/16

Abstract: An access point node comprises a first interface configured to communicate with a radio access node of a cellular network via a radio link and further comprises a second interface configured to communicate with a terminal via a further radio link. The access point node is configured to establish an end-to-end connection with a user-plane gateway node of the cellular network in response to receiving an attach message from the terminal.

公开(公告)号：US20170105133A1

公开(公告)日：2017-04-13

申请号：US14982337

申请日：2015-12-29

Applicant: Sony Mobile Communications Inc.

Inventor： Rickard Ljung ,  Peter C. Karlsson

IPC: H04W24/08 ,  H04W72/08 ,  H04W72/04

CPC classification number: H04W24/08 ,  H04W36/0083 ,  H04W36/0088 ,  H04W72/0406 ,  H04W72/0446 ,  H04W72/085

Abstract: At least one control message is received, from a cellular network. The at least one control message indicates a measurement band (300). A measurement of a signal quality of a signal received on the measurement band (300) is executed. The measurement band (300) differs from the bands (200) of at least one cell (101, 102, 103) of the cellular network.

公开(公告)号：US20170086225A1

公开(公告)日：2017-03-23

申请号：US14947757

申请日：2015-11-20

Applicant: Sony Mobile Communications Inc.

Inventor： Rickard Ljung

IPC: H04W74/08 ,  H04W16/14

CPC classification number: H04W74/0808 ,  H04B17/318 ,  H04W16/14 ,  H04W56/0005 ,  H04W74/004 ,  H04W74/0816

Abstract: A base station of a cellular radio communications network configured to operate in an unlicensed radio band, comprising a radio transceiver connected to an antenna, and a controller including a processor and a memory holding computer program code. The processor is configured to execute the computer program code to realize a machine for determining a size for a contention window, within which the base station may transmit data from the transceiver to a radio terminal operating in the network; receiving a signal from the terminal, comprising an indication of occupancy of a radio channel, as detected by the terminal; adjusting the contention window size dependent on the indication of occupancy of the radio channel; transmitting data to the terminal within the adjusted contention window.