COMMUNICATION SYSTEM, COMMUNICATION APPARATUS, AND COMMUNICATION METHOD
First Claim
1. A communication system comprising a plurality of communication apparatuses that each uses a CCH and a plurality of SCH to carry out communication,said plurality of communication apparatuses each including:
- a master communication apparatus;
a first slave communication apparatus; and
a second slave communication apparatus;
wherein said master communication apparatus transmits SCH information that indicates the SCH that is used in said master communication apparatus itself to said first slave communication apparatus;
said first slave communication apparatus, when carrying out switching to the SCH that is indicated by said SCH information for communication with said master communication apparatus during communication with said second slave communication apparatus, transmits to said second slave communication apparatus channel switching information that indicates that said first slave communication apparatus will carry out switching to the SCH that is indicated by said SCH information; and
said second slave communication apparatus carries out switching to the SCH indicated by said SCH information based on said channel switching information.
1 Assignment
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Accused Products
Abstract
A communication system includes a plurality of communication apparatuses that each uses CCH and a plurality of SCH to carry out communication. The plurality of communication apparatuses includes a master communication apparatus, a first slave communication apparatus, and a second slave communication apparatus. The master communication apparatus transmits SCH information that indicates the SCH that the master communication apparatus itself is using to the first slave communication apparatus; the first slave communication apparatus, when carrying out switching to the SCH that is indicated by the SCH information for communication with the master communication apparatus during communication with the second slave communication apparatus, transmits to the second slave communication apparatus channel switching information indicating that it will carry out switching to the SCH indicated by the SCH information; and the second slave communication apparatus carries out switching to the SCH indicated by the SCH information based on the channel switching information.
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Citations
10 Claims
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1. A communication system comprising a plurality of communication apparatuses that each uses a CCH and a plurality of SCH to carry out communication,
said plurality of communication apparatuses each including: -
a master communication apparatus; a first slave communication apparatus; and a second slave communication apparatus; wherein said master communication apparatus transmits SCH information that indicates the SCH that is used in said master communication apparatus itself to said first slave communication apparatus; said first slave communication apparatus, when carrying out switching to the SCH that is indicated by said SCH information for communication with said master communication apparatus during communication with said second slave communication apparatus, transmits to said second slave communication apparatus channel switching information that indicates that said first slave communication apparatus will carry out switching to the SCH that is indicated by said SCH information; and said second slave communication apparatus carries out switching to the SCH indicated by said SCH information based on said channel switching information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A communication apparatus that is one communication apparatus among a plurality of communication apparatuses that each uses a CCH and a plurality of SCH to carry out communication, comprising:
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a radio unit that, when the communication apparatus itself is a master communication apparatus, transmits to a slave communication apparatus SCH information that indicates the SCH that is used in the communication apparatus itself, or alternatively, when the communication apparatus itself is a slave communication apparatus and is to carry out switching to a SCH that is indicated by said SCH information for communication with said master communication apparatus during communication with another slave communication apparatus, transmits to the other slave communication apparatus channel switching information that indicates that the communication apparatus itself will carry out switching to the SCH that is indicated by said SCH information; and a control unit that, when the communication apparatus itself is a slave communication apparatus, upon receiving said channel switching information, carries out switching to the SCH that is indicated by said SCH information based on the channel switching information.
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10. A communication method that is realized by a communication apparatus that is one of a plurality of communication apparatuses that each uses a CCH and a plurality of SCH to carry out communication, the communication method comprising steps of:
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when the communication apparatus itself is a master communication apparatus, transmitting to a slave communication apparatus SCH information that indicates the SCH that is used in the communication apparatus itself; when the communication apparatus itself is a slave communication apparatus and is to carry out switching to a SCH that is indicated by said SCH information for communication with said master communication apparatus during communication with another slave communication apparatus, transmitting to the other slave communication apparatus channel switching information that indicates that the communication apparatus itself will carry out switching to the SCH that is indicated by said SCH information; and when the communication apparatus itself is a slave communication apparatus, upon receiving said channel switching information, carrying out switching to the SCH that is indicated by said SCH information based on the channel switching information.
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Specification