Wireless device, base station, random access method for wireless device and preamble configuration method for base station
US10098158B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 15, 2016 |
| Grant date | Oct 9, 2018 |
| Priority date | — |
| Expiry date | Apr 20, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W74/0833
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A wireless device, a base station, a random access method and a preamble configuration method are provided. The mobile communication system defines a plurality of preambles, a plurality of low priority preamble sets, and a high priority preamble set. The low priority preamble sets have a strict partial order relationship therebetween. The high priority preamble set and the highest-order low priority preamble set are independent from each other. When requiring random access from a base station, the wireless device randomly selects a preamble from the low priority preamble sets to transmit a random access request message to the base station by using the selected preamble. When the request for random access fails, the wireless device with low priority randomly reselects a preamble from the higher-order low priority preamble set, and the wireless device with high priority randomly reselects a preamble from the high priority preamble set.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.