发明名称 |
METHOD AND SYSTEM FOR DETERMINING UPLINK/DOWNLINK PATH-LOSS DIFFERENCE |
摘要 |
<p>Methods and apparatus are described for estimating a path-loss difference between uplink and downlink communications at a first node communicating with a second node in a communication system. A quantity of access request preambles transmitted by the first node to the second node before an acknowledgement from the second node of successful receipt of a preamble is received at the first node is determined. A difference between an uplink path-loss attributed to communications from the first node to the second node and a downlink path-loss attributed to communications to the first node from the second node is estimated based on the transmitted preamble quantity determination. Once the path-loss difference is estimated, the estimate can be used for many purposes, such as to determine a transmission power of the first node.</p> |
申请公布号 |
EP1700395(A1) |
申请公布日期 |
2006.09.13 |
申请号 |
EP20040819603 |
申请日期 |
2004.11.19 |
申请人 |
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) |
发明人 |
BERNHARDSSON, BO;OHLSSON, JONAS;ZIREN, MIKAEL |
分类号 |
H04B7/005;H04B17/00;H04W52/14;H04W52/22;H04W52/24;H04W52/50 |
主分类号 |
H04B7/005 |
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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