Systems, methods and devices for cellular synchronization references

    公开(公告)号:US10652846B2

    公开(公告)日:2020-05-12

    申请号:US15742416

    申请日:2016-03-25

    Abstract: Cellular (e.g., LTE or UMTS) and global navigation satellite system (GNSS) based technologies can provide ubiquitous and seamless synchronization solution for LTE-based vehicle to everything (V2X) or Proximity Services synchronization (ProSe) services. For example, by using joint GNSS timing references and LTE cellular network timing references for V2X or ProSe system synchronization benefits of using GNSS technologies to improve synchronization procedure for LTE based V2X or ProSe services can be enabled, including: (1) accurate and stable timing, (2) availability of a global and stable timing reference and (3) ability to propagate GNSS timing by user equipment having sufficient GNSS signal quality.

    Inter-frequency inter-public land mobile network (PLMN) discovery

    公开(公告)号:US10448235B2

    公开(公告)日:2019-10-15

    申请号:US15557070

    申请日:2015-12-24

    Abstract: A user equipment (UE) can receive, from an eNodeB, a serving PLMN system information block (SIB)19 for a carrier frequency of a serving PLMN of the UE. The UE can acquire inter-frequency and inter-PLMN discovery system information acquisition assistance signaling information from the SIB19. The UE can process a non-serving PLMN SIB19 for one or more carrier frequencies of a non-serving PLMN using the inter-frequency and inter-PLMN discovery system information acquisition assistance signaling information. The UE can identify inter-frequency and inter-PLMN discovery announcement rate information and monitoring control configuration information for the one or more carrier frequencies of the non-serving PLMN to enable the UE to perform device-to-device (D2D) discovery with a UE in the non-serving PLMN according to the inter-frequency and inter-PLMN discovery announcement rate information and monitoring control configuration information.

    APPARATUS OF A USER EQUIPMENT (UE) TO SELECT RESOURCES IN A VEHICLE TO VEHICLE (V2V) COMMUNICATION SYSTEM

    公开(公告)号:US20190150157A1

    公开(公告)日:2019-05-16

    申请号:US16094853

    申请日:2017-05-15

    Abstract: Technology for an apparatus of a user equipment (UE) configured to select spectrum resources in a vehicle to vehicle (V2V) communication system is disclosed. It relies on the established mechanisms for device-todevice, D2D direct mode communication well-known in the context of Proximity Services in a 3GPP LTE communications system. The UE can calculate a received energy in a physical sidelink shared channel (PSSCH) over a sensing period for a portion of one or more sub-channels over selected subframes in a resource pool, by means of measurements of Received Signal Strength Indication, RSSI, of other D2D sidelink channel communications. The UE can identify the one or more sub-channels over the selected subframes that has a measured energy level greater than a threshold value to determine a channel congestion fraction (CCF) comprising a fraction of the resources that exceed the threshold value, reflecting a resource utilization. The UE can send the channel congestion fraction (CCF) to an upper layer of the UE to enable resource reselection for the UE based on the fraction of the resources that exceed the threshold value. The configuration of D2D retransmission parameters is in particular addressed, according to the measured congestion or interference. The UE may as well transmit the measured CCF to a base station evolved node B, eNB, which may accordingly reconfigure the UE's sidelink channel communication transmission parameters.

    Resource allocation techniques for device-to-device (D2D) communications

    公开(公告)号:US09629145B2

    公开(公告)日:2017-04-18

    申请号:US14583650

    申请日:2014-12-27

    CPC classification number: H04W72/042 H04W72/0446

    Abstract: Resource allocation techniques for D2D communications are described. In one embodiment, for example, user equipment may comprise one or more radio frequency (RF) transceivers, one or more RF antennas, and logic, at least a portion of which is in hardware, the logic to receive a D2D control information (D2DCI) message comprising D2D transmission pattern (DTP) information, identify a set of D2D transmission resources based on the DTP information, and send one or more D2D data messages using the set of D2D transmission resources. Other embodiments are described and claimed.

    CONSTRUCTION OF TRANSMISSION PATTERNS FOR D2D COMMUNICATION
    40.
    发明申请
    CONSTRUCTION OF TRANSMISSION PATTERNS FOR D2D COMMUNICATION 有权
    建立D2D通信传输模式

    公开(公告)号:US20160095112A1

    公开(公告)日:2016-03-31

    申请号:US14671315

    申请日:2015-03-27

    CPC classification number: H04W72/0446 H04L1/1614 H04W72/1289 H04W76/14

    Abstract: Embodiments of the present disclosure describe apparatuses and methods for selecting or extending time resource patterns relating to device-to-device (D2D) functionality. Various embodiments may include processing circuitry to select a subset of a predefined set of D2D time resource pattern bitmaps and generate a signal having information corresponding to the selected subset of D2D time resource pattern bitmaps. Other embodiments may be described and/or claimed.

    Abstract translation: 本公开的实施例描述了用于选择或扩展与设备到设备(D2D)功能相关的时间资源模式的装置和方法。 各种实施例可以包括处理电路,以选择D2D时间资源模式位图的预定义集合的子集,并且生成具有与所选择的D2D时间资源模式位图的子集对应的信息的信号。 可以描述和/或要求保护其他实施例。

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