Method of reducing access time to UTRAN in UMTS
First Claim
1. A method of reducing access time to a UTRAN (UMTS Terrestrial Radio Access Network) in a UMTS(Universal Mobile Telecommunication System) when a UE (User Equipment) attempts an access to the UTRAN via an RACH (Random Access Channel) in the UMTS system having at least one UTRAN and at least one UE to which at least one RACH is available, comprising the steps of:
- determining whether a preamble signature is in current use upon receipt of the preamble signature from the UE;
transmitting a positive AICH (Access Indicator Channel) to the UE if the preamble signature corresponds to an available RACH;
determining whether there is a signature corresponding to an available RACH if the preamble signature corresponds to an RACH in current use; and
transmitting a negative AICH to the UE if all signatures are in use.
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Accused Products
Abstract
A method of reducing access time to a UTRAN in UMTS. Upon receipt of a preamble signature from a UE, the UTRAN determines whether the preamble signature is in current use. If the preamble signature corresponds to an available RACH, the UTRAN transmits a positive AICH to the UE. If the preamble signature corresponds to an RACH in current use, the UTRAN determines whether there is a signature corresponding to an available RACH. If all signatures are in use, the UTRAN transmits a negative AICH to the UE.
125 Citations
3 Claims
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1. A method of reducing access time to a UTRAN (UMTS Terrestrial Radio Access Network) in a UMTS(Universal Mobile Telecommunication System) when a UE (User Equipment) attempts an access to the UTRAN via an RACH (Random Access Channel) in the UMTS system having at least one UTRAN and at least one UE to which at least one RACH is available, comprising the steps of:
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determining whether a preamble signature is in current use upon receipt of the preamble signature from the UE;
transmitting a positive AICH (Access Indicator Channel) to the UE if the preamble signature corresponds to an available RACH;
determining whether there is a signature corresponding to an available RACH if the preamble signature corresponds to an RACH in current use; and
transmitting a negative AICH to the UE if all signatures are in use. - View Dependent Claims (2, 3)
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Specification