Patent ID: 9338801
Filing Date: 2016-05-10
CPC Classification: H04W

Claim Text:
1. An apparatus for performing a random access procedure from a mobile terminal to communicate with a cell of wireless communication network, the random access procedure providing a first and a second group of random access radio resources available for the cell, wherein the first and the second group comprise a plurality of random access radio resources assigned to the mobile terminal for sending a random access preamble to the cell of the wireless communication network, the apparatus comprising: a transmitter configured to use a processor for providing to the mobile terminal, a sliding resource window comprising a plurality of consecutive available random access radio resources from at least one of the two groups, wherein the mobile terminal may randomly select, from the resource window, one of the available random access radio resources assigned to the mobile terminal for sending the random access preamble, and wherein a start of the sliding resource window depends on an available random access radio resource, which is currently valid for uplink random access to the cell of the wireless communication network.