Line-of-sight radio communication terminal, method and program
First Claim
1. A wireless communication terminal which operates in operation modes including an undetermined mode, a master station mode and a slave station mode and is characterized by comprising:
- an initial detecting section which detects if communication with another wireless communication terminal that operates in the master station mode is possible in case where an operation mode is set to the undetermined mode;
a slave-mode setting section which, in case where it is detected by said initial detecting section that communication with another wireless communication terminal which operates in the master station mode is possible, sets the operation mode to the slave station mode registers the another wireless communication terminal as a master terminal and transmits subordination information to the effect that the local is subordinate to the master terminal;
a master-mode setting section which sets the operation mode to the master station mode in case where it is detected by said initial detecting section that communication with the another wireless communication terminal which operates in the master station mode is not possible;
a slave terminal registration section which registers said another wireless communication terminal as a slave terminal in case where the operation mode is set to the master station mode and subordination information to the effect that the another wireless communication terminal which operates in the master station mode is subordinate to the local is received;
a master station maintenance detection section which detects it communication with the another wireless communication terminal registered as the slave terminal is possible when the operation mode is set to the master station mode;
a slave station maintenance detection section which detects if communication with the another wireless communication terminal registered as the master terminal is possible when the operation mode is set to the slave station mode;
an undetermined-mode setting section which sets the operation mode to the undetermined mode in case where it is detected by said master station maintenance detection section that communication with the another wireless communication terminal registered as the slave terminal is not possible, or in case where it is detected by said slave station maintenance detection section that communication with the another wireless communication terminal registered as the master terminal is not possible or in case where the operation mode is set to the master station mode and no wireless communication terminal is registered as the slave terminal;
a transmission section which transmits a message to another wireless communication terminal; and
a reception section which receives a message from another wireless communication terminal.
2 Assignments
0 Petitions
Accused Products
Abstract
A wireless communication terminal that ensures communication using a frequency band suitable for line-of-sight communication even if an obstruction is present in a wireless communication path or a status of a radio wave propagation path dynamically changes. An initial detecting section detects whether it is possible to communicate with another terminal of a master station mode. If communication is possible, a slave-mode setting section sets up a slave station mode, registers the other terminal in a master terminal storage section and transmits to the other terminal a communication indicating that a local terminal is subordinate to the master terminal. If communication is not possible, a master-mode setting section sets up a master station mode when a transmission is received indicating that the other terminal is subordinate to the local terminal. A slave terminal registration section registers the other terminal in a slave terminal storage section. A master station maintenance detection section checks regularly if communication with a slave station is possible. A slave station maintenance detection section checks regularly if communication with a master station is possible. If communication is not possible, an undetermined-mode setting section sets up an undetermined mode and a transmission section transmits a message that is received by a reception section.
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Citations
45 Claims
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1. A wireless communication terminal which operates in operation modes including an undetermined mode, a master station mode and a slave station mode and is characterized by comprising:
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an initial detecting section which detects if communication with another wireless communication terminal that operates in the master station mode is possible in case where an operation mode is set to the undetermined mode; a slave-mode setting section which, in case where it is detected by said initial detecting section that communication with another wireless communication terminal which operates in the master station mode is possible, sets the operation mode to the slave station mode registers the another wireless communication terminal as a master terminal and transmits subordination information to the effect that the local is subordinate to the master terminal; a master-mode setting section which sets the operation mode to the master station mode in case where it is detected by said initial detecting section that communication with the another wireless communication terminal which operates in the master station mode is not possible; a slave terminal registration section which registers said another wireless communication terminal as a slave terminal in case where the operation mode is set to the master station mode and subordination information to the effect that the another wireless communication terminal which operates in the master station mode is subordinate to the local is received; a master station maintenance detection section which detects it communication with the another wireless communication terminal registered as the slave terminal is possible when the operation mode is set to the master station mode; a slave station maintenance detection section which detects if communication with the another wireless communication terminal registered as the master terminal is possible when the operation mode is set to the slave station mode; an undetermined-mode setting section which sets the operation mode to the undetermined mode in case where it is detected by said master station maintenance detection section that communication with the another wireless communication terminal registered as the slave terminal is not possible, or in case where it is detected by said slave station maintenance detection section that communication with the another wireless communication terminal registered as the master terminal is not possible or in case where the operation mode is set to the master station mode and no wireless communication terminal is registered as the slave terminal; a transmission section which transmits a message to another wireless communication terminal; and a reception section which receives a message from another wireless communication terminal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A wireless communication method which uses on operation modes including an undetermined mode, a master station mode and a slave station mode and is characterized by comprising:
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an initial detecting step which detects if communication with another wireless communication terminal that operates in the master station mode is possible in case where the operation mode is set to the undetermined mode; a slave-mode setting step which, in case where it is detected in said initial detecting step that communication with another wireless communication terminal which operates in the master station mode is possible, sets the operation mode to the slave station mode, registers the another wireless communication terminal as a master terminal and transmits subordination information to the effect that the local is subordinate to the master terminal; a master-mode setting step which sets the operation mode to the master station mode in case where it is detected in said initial detecting step that communication with the another wireless communication terminal which operates in the master station mode is not possible; a slave terminal registration step which registers said another wireless communication terminal as a slave terminal in case where the operation mode is set to the master station mode and subordination information to the effect that the another wireless communication terminal which operates in the master station mode is subordinate to the local is received; a master station maintenance detection step which detects if communication with the another wireless communication terminal registered as the slave terminal is possible when the operation mode is set to the master station mode; a slave station maintenance detection step which detects if communication with the another wireless communication terminal registered as the master terminal is possible when the operation mode is set to the slave station mode; and an undetermined-mode setting step which sets the operation mode to the undetermined mode in case where it is detected in said master station maintenance detection step that communication with the another wireless communication terminal registered as the slave terminal is not possible, or in case where it is detected in said slave station maintenance detection step that communication with the another wireless communication terminal registered as the master terminal is not possible or in case where the operation mode is set to the master station mode and no wireless communication terminal is registered as the slave terminal. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A program characterized by allowing a computer to function as a wireless communication terminal which operates in operation modes including an undetermined mode, a master station mode and a slave station mode and comprises:
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an initial detecting section which detects if communication with another wireless communication terminal that operates in the master station mode is possible in case where an operation mode is set to the undetermined mode; a slave-mode setting section which, in case where it is detected by said initial detecting section that communication with another wireless communication terminal which operates in the master station mode is possible, sets the operation mode to the slave station mode, registers the another wireless communication terminal as a master terminal and transmits subordination information to the effect that the local is subordinate to the master terminal; a master-mode setting section which sets the operation mode to the master station mode in case where it is detected by said initial detecting section that communication with the another wireless communication terminal which operates in the master station mode is not possible; a slave terminal registration section which registers said another wireless communication terminal as a slave terminal in case where the operation mode is set to the master station mode and subordination information to the effect that the another wireless communication terminal which operates in the master station mode is subordinate to the local is received; a master station maintenance detection section which detects if communication with the another wireless communication terminal registered as the slave terminal is possible when the operation mode is set to the master station mode; a slave station maintenance detection section which detects if communication with the another wireless communication terminal registered as the master terminal is possible when the operation mode is set to the slave station mode; an undetermined-mode setting section which sets the operation mode to the undetermined mode in case where it is detected by said master station maintenance detection section that communication with the another wireless communication terminal registered as the slave terminal is not possible, or in case where it is detected by said slave station maintenance detection section that communication with the another wireless communication terminal registered as the master terminal is not possible or in case where the operation mode is set to the master station mode and no wireless communication terminal is registered as the slave terminal; a transmission section which transmits a message to another wireless communication terminal; and a reception section which receives a message from another wireless communication terminal. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
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40. A wireless communication terminal (hereinafter called “
- local”
) capable of relaying communication to another wireless communication terminal and having an input section, a transmission section, a reception section and an output section, characterized in that(a) said input section accepts inputting of a destination terminal and data information addressed to the destination terminal, (b) said transmission section transmits a destination data information message designating the destination terminal inputting of whose has been accepted and the data information addressed it as a destination terminal using a predetermined transmission parameter (including a parameter of transmission power, a parameter of a frequency channel to be used in transmission, a parameter of a modulation system, a parameter of a beam shape), (c) said output section outputs the data information when said reception section has received a ‘
destination data information message addressing the local’
,(d) when said reception section has received a ‘
destination data information message addressing, as a destination terminal, another wireless communication terminal (hereinafter called “
relayable terminal”
) to which the local can relay communication’
, a ‘
relay-offer message designating a reception status parameter (including a parameter of reception power, a parameter of a use status of a frequency channel or a parameter of a distance and direction to the sender terminal) at a time the destination data information message has been received’
is transmitted,(e) when said reception section has received the relay-offer message, said transmission section transmits the destination data information message to that terminal which has sent the relay-offer message, by using a transmission parameter associated with the reception status parameter designated in the relay-offer message, and (f) when said reception section has received a ‘
destination data information message designating data information addressing, as a destination terminal, “
a relayable terminal targeted for the relay-offer message transmitted earlier by said transmission section”
, said transmission section transmits the destination data information message to the relayable terminal. - View Dependent Claims (41)
- local”
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42. A wireless communication method in which a predetermined wireless communication terminal (hereinafter called “
- local”
) is set beforehand and which can relay communication to another wireless communication terminal other than that terminal, characterized by comprising;(a) a step of accepting inputting of a destination terminal and data information addressed to the destination terminal, (b) a step of transmitting a destination data information message designating the destination terminal inputting of whose has been accepted and the data information addressed it as a destination terminal using a predetermined transmission parameter (including a parameter of transmission power, a parameter of a frequency channel to be used in transmission, a parameter of a modulation system, a parameter of a beam shape), (c) a step of outputting the data information when a ‘
destination data information message addressing the local’
has been received,(d) a step of, when a ‘
destination data information message addressing, as a destination terminal, another wireless communication terminal (hereinafter called “
relayable terminal”
) to which the local can relay communication’
has been received, transmitting a ‘
relay-offer message designating a reception status parameter (including a parameter of reception power, a parameter of a use status of a frequency channel or a parameter of a distance and direction to the sender terminal) at a time the destination data information message has been received’
is transmitted,(e) a step of, when the relay-offer message has been received, transmitting the destination data information message to that terminal which has sent the relay-offer message, by using a transmission parameter associated with the reception status parameter designated in the relay-offer message, and (f) a step of, when a ‘
destination data information message designating data information addressing, as a destination terminal has been received, “
a relayable terminal targeted for the relay-offer message transmitted earlier by said transmission section”
, transmitting the destination data information message to the relayable terminal. - View Dependent Claims (43)
- local”
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44. A program for allowing a computer to function as a wireless communication terminal (hereinafter called “
- local”
) capable of relaying communication to another wireless communication terminal and having an input section, a transmission section, a reception section and an output section, characterized in that(a) said input section accepts inputting of a destination terminal and data information addressed to the destination terminal, (b) said transmission section transmits a destination data information message designating the destination terminal inputting of whose has been accepted and the data information addressed it as a destination terminal using a predetermined transmission parameter (including a parameter of transmission power, a parameter of a frequency channel to be used in transmission, a parameter of a modulation system, a parameter of a beam shape), (c) said output section outputs the data information when said reception section has received a ‘
destination data information message addressing the local’
,(d) when said reception section has received a ‘
destination data information message addressing, as a destination terminal, another wireless communication terminal (hereinafter called “
relayable terminal”
) to which the local can relay communication’
, a ‘
relay-offer message designating a reception status parameter (including a, parameter of reception power, a parameter of a use status of a frequency channel or a parameter of a distance and direction to the sender terminal) at a time the destination data information message has been received’
is transmitted,(e) when said reception section has received the relay-offer message, said transmission section transmits the destination data information message to that terminal which has sent the relay-offer message, by using a transmission parameter associated with the reception status parameter designated in the relay-offer message, and f) when said reception section has received a ‘
destination data information message designating data information addressing, as a destination terminal, “
a relayable terminal targeted for the relay-offer message transmitted earlier by said transmission section”
, said transmission section transmits the destination data information message to the relayable terminal. - View Dependent Claims (45)
- local”
Specification