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    Method and apparatus for resolving call collisions in a digital conventional direct mode
    1.
    发明授权
    Method and apparatus for resolving call collisions in a digital conventional direct mode 有权
    用于在数字常规直接模式中解决呼叫冲突的方法和装置

    公开(公告)号：US09215689B2

    公开(公告)日：2015-12-15

    申请号：US13793244

    申请日：2013-03-11

    Applicant: MOTOROLA SOLUTIONS, INC.

    Inventor： Satyanarayan R. Panpaliya ,  Dipendra M. Chowdhary ,  Sanjaykumar S. Karpoor ,  Badarinath Patibandla ,  David G. Wiatrowski

    IPC: H04H20/71 ,  H04W72/00 ,  H04W76/02 ,  H04W76/00 ,  H04W84/22

    CPC classification number: H04W72/005 ,  H04W76/14 ,  H04W76/18 ,  H04W76/45 ,  H04W84/22

    Abstract: A process for resolving call collisions in a digital conventional direct mode includes monitoring a direct mode communication channel for transmissions from other direct mode radios in the plurality of direct mode radios. In response to detecting a new call request: identifying a last radio to transmit on the direct mode channel, transmitting a new call request for receipt by the last direct mode radio to transmit, monitoring the direct mode channel for a response from the last radio to transmit, and if a call grant granting the new call request is received from the last radio to transmit, initiating the new direct mode call on the direct mode communication channel. If the call grant is not received, at least temporarily refraining from initiating the new direct mode call.

    Abstract translation: 用于在数字常规直接模式中解决呼叫冲突的过程包括监视直接模式通信信道用于来自多个直接模式无线电中的其他直接模式无线电的传输。 响应于检测到新的呼叫请求：识别在直接模式信道上要发送的最后一个无线电，发送用于由最后一个直接模式无线电接收的新呼叫请求进行发送，监视来自最后一个无线电的响应的直接模式信道 发送，并且如果从最后的无线电接收到授予新的呼叫请求的呼叫许可发送，则在直接模式通信信道上发起新的直接模式呼叫。 如果未接收到呼叫授权，则至少暂时禁止启动新的直接模式呼叫。

    Method of Operating a User Equipment to Connect to a Radio Access Network
    4.
    发明申请
    Method of Operating a User Equipment to Connect to a Radio Access Network 审中-公开

    公开(公告)号：US20200084780A1

    公开(公告)日：2020-03-12

    申请号：US16123094

    申请日：2018-09-06

    Applicant: Motorola Solutions, Inc

    Inventor： David G. Wiatrowski ,  Kok Seng Ang ,  Dipendra M. Chowdhary

    IPC: H04W72/12 ,  H04W16/10 ,  H04W16/14

    Abstract: A process for connecting a user equipment to a radio access network in which communication frequencies are dynamically allocated from a shared radio spectrum. In operation, the user equipment maintains a radio frequency scan list that indicates a prioritized order with which a plurality of radio frequencies selected from the shared radio spectrum are to be scanned. The user equipment scans the radio frequencies in accordance with the prioritized order that is indicated in the radio frequency scan list and selects a target radio frequency from the radio frequencies based on the scanning of the radio frequencies. The target radio frequency corresponds to a frequency band that is dynamically allocated from the shared radio spectrum to a radio access network associated with the user equipment. The user equipment then connects to the radio access network using the frequency band corresponding to the target radio frequency.

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