Patent ID: 8705352
Filing Date: 2014-04-22
Classification: H04W

Abstract:
1. A prioritized random access method, configured for a base station, comprising: classifying random access attempts of wireless communication devices into at least a priority level; associating each of the priority levels respectively with a set of dedicated random access opportunities; broadcasting default configuration of the dedicated random access opportunities; receiving random access messages from the wireless communication devices; detecting congestion of the random access messages which belong to a first priority level; changing the dedicated random access opportunities, wherein the step of changing the dedicated random access opportunities comprises: increasing the dedicated random access opportunities of the first priority level by temporarily borrowing random access opportunities of at least a second priority level, wherein the at least a second priority level is lower than the first priority level; and notifying the change of the dedicated random access opportunities by a response message to some wireless communication devices, whose transmitted random access messages are congested.