| 发明名称 | Radio transmission device and radio transmission method | ||
| 摘要 | A base station is provided, including a transmitter configured to broadcast information for determining one or more first preambles contained in a first Random Access Preamble group and any second preamble(s) contained in a second Random Access Preamble group; and a receiver configured to receive a preamble transmitted by a mobile station. The received preamble is randomly selected from among the first preamble(s) when the first Random Access Preamble group is selected, or is randomly selected from among the second preamble(s) when the second Random Access Preamble group is selected. The second Random Access Preamble group is selected if a message size based on data available for transmission by the mobile station meets a first condition and if a value calculated based on a reference signal received power of downlink meets a second condition, and else the first Random Access Preamble group is selected. | ||
| 申请公布号 | US8982868(B2) | 申请公布日期 | 2015.03.17 |
| 申请号 | US201314075808 | 申请日期 | 2013.11.08 |
| 申请人 | Godo Kaisha IP Bridge 1 | 发明人 | Iwai Takashi;Imamura Daichi;Futagi Sadaki;Matsumoto Atsushi;Takata Tomofumi |
| 分类号 | H04B7/216;H04W74/08;H04W36/00 | 主分类号 | H04B7/216 |
| 代理机构 | Seed IP Law Group PLLC | 代理人 | Seed IP Law Group PLLC |
| 主权项 | 1. A base station comprising: a transmitter configured to broadcast information for determining one or more first preambles contained in a first Random Access Preamble group and any second preamble(s) contained in a second Random Access Preamble group; and a receiver configured to receive a preamble transmitted by a mobile station; wherein the received preamble is randomly selected from among the first preamble(s) when the first Random Access Preamble group is selected, or is randomly selected from among the second preamble(s) when the second Random Access Preamble group is selected, wherein the second Random Access Preamble group is selected if a message size based on data available for transmission by the mobile station meets a first condition and if a value calculated based on a reference signal received power of downlink meets a second condition, and else the first Random Access Preamble group is selected. | ||
| 地址 | Tokyo JP | ||