Radio reception device and radio reception method
First Claim
1. A communication apparatus, comprising:
- a transmitter, which, in operation, transmits first information to a first mobile station, the first information including a signature identifier (ID) associated with an ID of the first mobile station; and
a receiver, which, in operation, receives from the first mobile station a first Random Access Signature indicated by the signature ID included in the first information, and receives from a second mobile station a second Random Access Signature randomly selected by the second mobile station from among a plurality of Random Access Signatures, wherein the transmitter, in operation, transmits second information indicating a quantity of the plurality of Random Access Signatures.
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Abstract
Disclosed are a radio transmission device and a radio transmission method which reduce the RACH conflict ratio and improve the RACH detection characteristic. When the device and the method are used: as the number of signature numbers allocated for UE by the network side increases, the condition for allocating a signature by UE itself is mitigated and an expectation value which is a statistic average value of the RA quantity using the signature allocated by UE for itself is decreased; and as the number of signature numbers allocated for UE by the network side decreases, the condition for allocating a signature by UE itself is limited and an expectation value of the RA quantity using the signature allocated by UE for itself is increased.
27 Citations
16 Claims
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1. A communication apparatus, comprising:
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a transmitter, which, in operation, transmits first information to a first mobile station, the first information including a signature identifier (ID) associated with an ID of the first mobile station; and a receiver, which, in operation, receives from the first mobile station a first Random Access Signature indicated by the signature ID included in the first information, and receives from a second mobile station a second Random Access Signature randomly selected by the second mobile station from among a plurality of Random Access Signatures, wherein the transmitter, in operation, transmits second information indicating a quantity of the plurality of Random Access Signatures. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A communication method, comprising:
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transmitting first information to a first mobile station, the first information including a signature identifier (ID) associated with an ID of the first mobile station; receiving from the first mobile station a first Random Access Signature, the first Random Access Signature being indicated by the signature ID included in the first information; receiving from a second mobile station a second Random Access Signature randomly selected by the second mobile station from among a plurality of Random Access Signatures; and transmitting second information indicating a quantity of the plurality of Random Access Signatures. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification