Mobile station apparatus and method to perform a random access using a randomly selected signature in a cellular communication system
AssigneeSharp Kabushiki Kaisha
InventorsShohei YAMADA, Yasuyuki KATO
Life of this patent
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Abstract
A mobile station apparatus detects a signature not reserved as a dedicated signature informed by a base station. In addition, the mobile station apparatus performs a random access using a randomly selected signature, in case of detecting a signature not reserved as a dedicated signature.
Claims4
A mobile station apparatus configured to communicate with a base station apparatus, the mobile station apparatus comprising:
- receiving circuitry configured to receive from the base station apparatus, information requesting the mobile station apparatus to perform random access to the base station apparatus, the information including an identifier;
- and
- performing circuitry configured to, in a case that the identifier is a first value,
- randomly select a first signature, and
- perform random access using the first signature, wherein
- the performing circuitry is configured to, in a case that the identifier is not the first value, perform random access using a second signature specified by the identifier.
A processing method of a mobile station apparatus configured to communicate with a base station apparatus, the processing method comprising:
- receiving from the base station apparatus, information requesting the mobile station apparatus to perform random access to the base station apparatus, the information including an identifier;
- in a case that the identifier is a first value, randomly selecting a first signature, and performing random access using the first signature;
- and
- in a case that the identifier is not the first value, performing random access using a second signature specified by the identifier.
A base station apparatus configured to communicate with a mobile station apparatus, the base station apparatus comprising:
- scheduling circuitry configured to include an identifier in information requesting the mobile station apparatus to perform random access to the base station apparatus, wherein
- the identifier is a first value in a case that the mobile station apparatus is to randomly select a first signature to be used to perform the random access, and
- the identifier is not the first value in a case that the mobile station apparatus is to perform random access using a second signature specified by the identifier;
- and
- transmitting circuitry configured to transmit the information to the mobile station apparatus.
A processing method of abase station apparatus configured to communicate with a mobile station apparatus, the processing method comprising:
- including an identifier in information requesting the mobile station apparatus to perform random access to the base station apparatus, wherein
- the identifier is a first value in a case that the mobile station apparatus is to randomly select a first signature to be used to perform the random access, and
- the identifier is not the first value in a case that the mobile station apparatus is to perform random access using a second signature specified by the identifier;
- and
- transmitting the information to the mobile station apparatus.
Dependencies are inferred from the claim text.