Channel allocating method for random access
AssigneeLG Electronics Inc.
InventorsYou Chang Ko, Choong Ho Cho, Hyong Woo Lee
Life of this patent
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Abstract
A channel allocating method for random access is disclosed, which is suitable for allocation of uplink RACH in a radio access network and by which random access processing performance in a radio access network is enhanced using RACH of new structure. The present invention includes the steps of setting up a channel area (Ic) dedicated for new access attempt among random access channels of a prescribed frame (t) and allowing a mobile terminal to attempt access to an access point via a prescribed random access channel corresponding to the channel area (Ic).
Claims6
A channel allocating method for random access, comprising:
- setting up a first type channel area (Ic) dedicated for a new access attempt among random access channels of a prescribed frame (t);
- allowing a specific mobile terminal to attempt a new access to an access point via a prescribed random access channel within the first type channel area (Ic),
- wherein the first type channel area (Ic) is not used for an access re-attempt;
- and
- allowing the specific mobile terminal to re-attempt the access to the access point via a second type channel area (Rc′) set up to be used for the access re-attempt at a frame (t+1) next to the frame (t) except a first type channel area (Ic′) dedicated for a new access attempt among the random access channels at the frame (t+1) if the specific mobile terminal fails in the access attempt at frame (t),
- wherein a random access channel of a frame (t+1+δ) delayed by a prescribed time δ is allocated to the specific mobile terminal which fails in the access attempt at the frame (t) if the second type channel area (Rc′) at frame (t+1) cannot be allocated to the specific mobile terminal for the access re-attempt, and
- wherein the random access channel of the frame (t+1+δ) corresponds to a first type channel area (Ic″) to be dedicated for the new access attempt among random access channels at the frame (t+1+δ).
Dependencies are inferred from the claim text.