公开(公告)号：US09271257B2

公开(公告)日：2016-02-23

申请号：US14106622

申请日：2013-12-13

Applicant: MOTOROLA SOLUTIONS, INC

Inventor： Yueh Ching Chung ,  Thomas B Bohn ,  Dipendra M Chowdhary ,  Hun Weng Khoo ,  Satyanarayan R Panpaliya ,  Teik Choon Teh

IPC: H04W4/08 ,  H04W4/10 ,  H04W64/00 ,  H04W76/00 ,  H04W84/08

CPC classification number: H04W64/00 ,  H04W4/08 ,  H04W76/45 ,  H04W84/08

Abstract: A radio affiliates, via a first channel, with at least one talk group the radio is interested in receiving calls from, sends a request to transmit location information on a separate revert channel, and receives a first grant time period to transmit location information on a particular revert channel. The radio moves at substantially the first grant time period, away from the first channel to the revert channel to transmit location information or request a second grant time period on the revert channel, receives an announcement on the revert channel during the first grant time period that a call of interest associated with the at least one talk group started while the radio was on the revert channel, determines an assigned traffic channel for the call of interest, and switches from the revert channel to the assigned traffic channel in order to receive the call of interest.

Abstract translation: 无线电附属机构经由第一信道与无线电有兴趣接收呼叫的至少一个通话组发送在单独的还原信道上发送位置信息的请求，并且接收第一授权时间段以在 特定还原通道。 无线电基本上在第一授权时间段移动，远离第一信道到恢复信道以发送位置信息，或在还原信道上请求第二授权时间段，在第一授权时间周期期间在恢复信道上接收公告， 当无线电在恢复信道上时，与所述至少一个通话组相关联的兴趣呼叫确定用于所述感兴趣的呼叫的所分配的业务信道，并且从恢复信道切换到所分配的业务信道，以便接收呼叫 出于兴趣。

公开(公告)号：US09578578B2

公开(公告)日：2017-02-21

申请号：US14106530

申请日：2013-12-13

Applicant: MOTOROLA SOLUTIONS, INC

Inventor： Hun Weng Khoo ,  Dipendra M Chowdhary ,  Yueh Ching Chung ,  Chebron Padmanaba ,  Satyanarayan R Panpaliya ,  Badarinath Patibandla

IPC: H04W36/30 ,  H04J3/16 ,  H04W56/00 ,  H04W36/00 ,  H04W36/02 ,  H04W36/36

CPC classification number: H04W36/30 ,  H04J3/16 ,  H04W36/0061 ,  H04W36/026 ,  H04W36/36 ,  H04W56/00

Abstract: A radio receives audio information on a first traffic channel in a radio frequency (RF) site. The radio receives, on the first traffic channel, an announcement of alternative traffic channels on which the audio information is also transmitted in adjacent RF sites. The radio determines signal strength indicators for the alternative traffic channels in the adjacent RF sites while continuing to receive the audio information on the first traffic channel. The radio determines that a signal strength associated with the first traffic channel is below a first threshold. Based on the determination and as a function of the scanning, the radio roams to a second traffic channel, selected from the alternative traffic channels, in an adjacent RF site where a signal strength associated with the second traffic channel is above a second threshold. The radio receives the audio information via the second traffic channel.

Abstract translation: 无线电接收机在射频（RF）站点的第一业务信道上接收音频信息。 无线电接收机在第一业务信道上接收在相邻RF站点上发送音频信息的备选业务信道的通告。 无线电装置确定相邻RF站点中替代业务信道的信号强度指示符，同时继续在第一业务信道上接收音频信息。 无线电确定与第一业务信道相关联的信号强度低于第一阈值。 基于扫描的确定和功能，无线电漫游到相邻RF站点中从替代业务信道中选择的第二业务信道，其中与第二业务信道相关联的信号强度高于第二阈值。 无线电通过第二业务信道接收音频信息。

公开(公告)号：US09277428B2

公开(公告)日：2016-03-01

申请号：US14264821

申请日：2014-04-29

Applicant: MOTOROLA SOLUTIONS, INC

Inventor： Dipendra M Chowdhary ,  John P Belmonte ,  Thomas B Bohn ,  Satyanarayan R Panpaliya ,  Badarinath Patibandla

IPC: H04W28/02 ,  H04W24/04 ,  H04W74/08

CPC classification number: H04W24/04 ,  H04W28/0236 ,  H04W28/0242 ,  H04W48/02 ,  H04W74/0833

Abstract: A radio controller monitors a radio channel for a first period of time and determines a first indication of signals received without detecting synchronization or with detecting synchronization but failing error correction during that time. Responsive to determining that the first indication is above a predetermined threshold indicative of an interference condition, causing an instruction to be broadcast identifying a subset of subscriber devices allowed transmitting random access requests on the radio channel. The radio controller monitors the radio channel for a second period of time and determines a second indication during that time. If the second indication is an improvement over the first indication, the radio controller determines that the interference condition is caused by the mass random access event.

Abstract translation: 无线电控制器在第一时间段内监测无线电信道，并且确定接收到的信号的第一指示而不检测同步或者检测到同步，但在该时间期间失败的纠错。 响应于确定第一指示高于指示干扰条件的预定阈值，引起广播指令，标识允许在无线电信道上发送随机接入请求的订户设备的子集。 无线电控制器在第二段时间内监视无线电信道，并在该时间确定第二指示。 如果第二指示是对第一指示的改进，则无线电控制器确定干扰条件是由大规模随机接入事件引起的。