WIRELESS COMMUNICATION DEVICE AND WIRELESS COMMUNICATION METHOD
First Claim
1. A wireless communication device that transmits and receives packets based on a packet transmission system for allocating a radio bandwidth by a virtual carrier sensing, the wireless communication device comprising:
- a first transmitting means for periodically or occasionally transmitting a scheduling table, wherein a transmission order written by at least one of a plurality of wireless communication devices, to a wireless base station;
a recognizing and retaining means for recognizing and retaining a scheduling table received when the wireless communication device is connected to the wireless base station and is not communicating with other wireless communication device;
a second transmitting means for additionally writing information of the wireless communication device to the scheduling table which is retained by the recognizing and retaining means at the beginning of communication and for transmitting the additionally-written scheduling table at least once;
an updating means for updating the retained scheduling table, when an update time of another scheduling table received from the wireless base station is later than an update time of the retained scheduling table and another transmission order received from the wireless base station is different from the transmission order in the retained scheduling table; and
a third transmitting means for communicating after setting an exclusive or preferential bandwidth available period in accordance with the scheduling table updated by the updating means.
1 Assignment
0 Petitions
Accused Products
Abstract
An object of the present invention is to realize a distributed autonomous transmission scheduling by using a terminal without the need to observe packets in relation to communication of other wireless terminals in a cell, such as VoIP, in which a plurality of wireless terminals that periodically transmit packets exist, thereby allowing intermittent reception during the packet observation and enabling to control power consumption of the wireless terminal as well as to reduce the load to thereby improve the communication quality. To attain the object, a VoIP terminal 100 recognizes and retains a scheduling table received by a wireless terminal that is connected to a wireless base station and that is not communicating with other wireless terminals, additionally writes terminal information of the terminal in the scheduling table at the start of communication of the terminal, and broadcasts the scheduling table. The scheduling table is updated when an update time of another scheduling table received by a terminal in communication which is newer than an update time of the scheduling table and different from the order of transmission, and an exclusive or preferential bandwidth available period is set for communication in accordance with the scheduling table.
9 Citations
6 Claims
-
1. A wireless communication device that transmits and receives packets based on a packet transmission system for allocating a radio bandwidth by a virtual carrier sensing, the wireless communication device comprising:
-
a first transmitting means for periodically or occasionally transmitting a scheduling table, wherein a transmission order written by at least one of a plurality of wireless communication devices, to a wireless base station; a recognizing and retaining means for recognizing and retaining a scheduling table received when the wireless communication device is connected to the wireless base station and is not communicating with other wireless communication device; a second transmitting means for additionally writing information of the wireless communication device to the scheduling table which is retained by the recognizing and retaining means at the beginning of communication and for transmitting the additionally-written scheduling table at least once; an updating means for updating the retained scheduling table, when an update time of another scheduling table received from the wireless base station is later than an update time of the retained scheduling table and another transmission order received from the wireless base station is different from the transmission order in the retained scheduling table; and a third transmitting means for communicating after setting an exclusive or preferential bandwidth available period in accordance with the scheduling table updated by the updating means. - View Dependent Claims (2, 3, 4, 5)
-
-
6. A wireless communication method for transmitting and receiving packets based on a packet transmission system for allocating a radio bandwidth by virtual carrier sensing, the wireless communication method comprising:
-
a first step for periodically or occasionally transmitting a scheduling table, wherein a transmission order written by at least one of a plurality of wireless communication devices, to a wireless base station; a second step for recognizing and retaining a scheduling table received when the wireless communication device is connected to the wireless base station and is not communicating with other wireless communication device; a third step for additionally writing information of the wireless communication device to the scheduling table which is retained by the recognizing and retaining means at the beginning of communication and for transmitting the additionally-written scheduling table at least once; a fourth step for updating the retained scheduling table, when an update time of another scheduling table received from the wireless base station is later than an update time of the retained scheduling table and another transmission order received from the wireless base station is different from the transmission order in the retained scheduling table; and a fifth step for communicating after setting an exclusive or preferential bandwidth available period in accordance with the scheduling table updated at the fourth step.
-
Specification