发明名称 |
Call handover in a non-geostationary satellite constellation |
摘要 |
Following a call set-up request emitted by a terminal of a given user of a telecommunications system using a constellation of non-geostationary satellites, the terminal reserves a channel in the cell in which it is located and in neighboring cells not including all the cells it will have to cross during a predetermined time period. For each cell where a channel has not been reserved, the given user's terminal waits until it is at a predetermined distance from its point of handover into the cell, equal to the greatest distance a user can travel in the cell, before transmitting a reservation request. The call set-up request is accepted only if a condition relating to the number of other users near the given user at the time of the call set-up request is satisfied.
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申请公布号 |
US6122507(A) |
申请公布日期 |
2000.09.19 |
申请号 |
US19980027928 |
申请日期 |
1998.02.23 |
申请人 |
FRANCE TELECOM |
发明人 |
GERARD, MARAL;JOAQUIM, RESTREPO |
分类号 |
H04B7/185;(IPC1-7):H04Q7/36 |
主分类号 |
H04B7/185 |
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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