发明名称 |
METHOD AND SYSTEM FOR INITIAL SYNCHRONIZATION AND COLLISON AVOIDANCE IN DEVICE TO DEVICE COMMUNICATIONS WITHOUT NETWORK COVERAGE |
摘要 |
A method at a first device for enabling a device-to-device wireless link, the method detecting whether a presence signal of a second device is received over a first time period, the presence signal of the second device having a time-slot boundary; and if the presence signal of the second device is not detected, initiating a time-slot boundary by the first device including: transmitting a first presence signal of the first device in a selected time-slot; and checking for an acknowledgment to the first presence signal. |
申请公布号 |
CA2920657(A1) |
申请公布日期 |
2015.02.12 |
申请号 |
CA20142920657 |
申请日期 |
2014.08.08 |
申请人 |
BLACKBERRY LIMITED |
发明人 |
NGUYEN, NAM;BLANKENSHIP, YUFEI WU;DHAKAL, SAGAR |
分类号 |
H04W56/00;H04W76/02 |
主分类号 |
H04W56/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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