发明名称 |
SELECTING TRANSMISSION PARAMETERS FOR CONTENTION-BASED ACCESS IN WIRELESS SYSTEMS |
摘要 |
A method and apparatus are disclosed for selecting a channel for uplink communication includes determining whether a cell supports transmission over an enhanced random access channel (E-RACH) and selecting whether to send uplink communications over the E-RACH or a random access channel. A method for selecting a transmission time interval (TTI) for use on an E-RACH includes evaluating radio conditions measured at a user equipment and selecting a long TTI if radio conditions are bad and selecting a short TTI if radio conditions are good. Alternatively, the TTI can be selected based on an amount of data to be transmitted on the uplink. A user equipment, an integrated circuit, or a Node B can be configured to perform either method.
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申请公布号 |
US2009109937(A1) |
申请公布日期 |
2009.04.30 |
申请号 |
US20080257524 |
申请日期 |
2008.10.24 |
申请人 |
INTERDIGITAL PATENT HOLDINGS, INC. |
发明人 |
CAVE CHRISTOPHER R.;MARINIER PAUL;PELLETIER BENOIT;PANI DIANA;DIGIROLAMO ROCCO;ROY VINCENT |
分类号 |
H04W74/00;H04W72/00 |
主分类号 |
H04W74/00 |
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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