RADIO COMMUNICATION METHOD, RADIO COMMUNICATION APPARATUS, AND RADIO COMMUNICATION SYSTEM

• US 20130095767A1
• Filed: 12/03/2012
• Published: 04/18/2013
• Est. Priority Date: 06/18/2010
• Status: Active Grant

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Tajima, Yoshiharu, Tanaka, Yoshinori, Kawasaki, Yoshihiro, Ohta, Yoshiaki, Sugiyama, Katsumasa, Obuchi, Kazuhisa
• Granted Patent: US 8,995,928 B2
• Time in Patent Office: Days
• US Class Current: 455/68
• CPC Class Codes: G08C 17/00 Arrangements for transmitting signals characterised by the use of a wireless electrical link
• CPC Class Codes: H04W 28/06 Optimizing the usage of the radio link, e.g. header compression, information sizing , discarding information system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365
• CPC Class Codes: H04W 72/12 Wireless traffic scheduling
• CPC Class Codes: H04W 76/14 Direct-mode setup

Abstract

A first radio communication apparatus includes a controller and a transmitter. The controller determines timing capable of transmitting a control parameter used for a process for establishing connection to a second radio communication apparatus when the connection is not established between the first and second radio communication apparatus. The transmitter transmits a message including data different from the control parameter to the second radio communication apparatus at determined timing. The second radio communication apparatus includes a receiver and a data processing unit. The receiver receives from the first radio communication apparatus the message transmitted at timing at which the first radio communication apparatus is able to transmit the control parameter. The data processing unit extracts data included in the received message.

Claims

1. A radio communication method for use in a radio communication system which includes first and second radio communication apparatus and in which the first radio communication apparatus transmits data to the second radio communication apparatus, the radio communication method comprising:

transmitting, by the first radio communication apparatus, a message including data different from a control parameter to the second radio communication apparatus at timing capable of transmitting the control parameter used for a process for establishing connection when the connection is not established between the first and second radio communication apparatus;

receiving, by the second radio communication apparatus, from the first radio communication apparatus the message transmitted at timing at which the first radio communication apparatus is able to transmit the control parameter; and

extracting, by the second radio communication apparatus, data included in the received message.

2. The radio communication method according to claim 1, wherein in the case where data different from the control parameter is extracted from the received message, the second radio communication apparatus does not perform the process for establishing the connection.

3. The radio communication method according to claim 1, wherein in place of the control parameter, the first radio communication apparatus inserts data different from the control parameter into the message.

4. The radio communication method according to claim 1, wherein:

the message includes flag information indicating the presence or absence of data different from the control parameter; and

the second radio communication apparatus extracts data different from the control parameter when the second radio communication apparatus determines based on the flag information that data different from the control parameter is included in the message.

5. The radio communication method according to claim 1, wherein:

the message includes transmission source information indicating a radio communication apparatus as a transmission source; and

the second radio communication apparatus extracts data different from the control parameter from the message only when the radio communication apparatus indicated by the transmission source information is registered in its own apparatus.

6. The radio communication method according to claim 1, wherein the message is a message that is transmitted before connection is established after the first radio communication apparatus performs a random access to the second radio communication apparatus.

7. A radio communication apparatus to transmit data to another radio communication apparatus, the radio communication apparatus comprising:

a controller configured to determine timing capable of transmitting a control parameter used for a process for establishing connection to said another radio communication apparatus when the connection is not established between the radio communication apparatus and said another radio communication apparatus; and

a transmitter configured to transmit a message including data different from the control parameter to said another radio communication apparatus at timing determined by the controller.

8. A radio communication apparatus to receive data from another radio communication apparatus, the radio communication apparatus comprising:

a receiver configured to receive a message including data different from a control parameter, transmitted at timing at which said another radio communication apparatus is able to transmit the control parameter used for a process for establishing connection from said another radio communication apparatus in which the connection is not established between said another radio communication apparatus and the radio communication apparatus; and

a data processing unit configured to extract data included in the message received by the receiver.