Distributed wireless access method based on network allocation vector table and apparatus of the same
First Claim
1. A wireless access method based on Network allocation vector table (NAVT), which is applied to a distributed wireless mobile communication system comprising a plurality of nodes, the NAVT comprises a packet type field indicating whether a packet comes from a transmitting node or from a receiving node and a duration field indicating an expected length of a data transmission and is stored in the respective nodes of the communication system, comprising:
- on a transmitting side,determining whether only a request to send (RTS) item indicating that a packet comes from a transmitting node is contained in the NAVT when a packet to be transmitted by the transmitting side arrives;
sensing a channel to determine whether the channel is busy after determining that only the RTS item is contained in the NAVT;
fitting a data length of the packet to be transmitted by the transmitting side to a length shorter than a length of a data transmission obtained by subtracting a predetermined value from the value indicated by the RTS item when it is determined that the channel is busy;
sending a RTS packet including the fitted data length of the packet to be transmitted by the transmitting side, or a data packet with fitted data length; and
on a receiving side,determining the contents of the NAVT is empty when the RTS packet is received; and
sending a clear to send (CTS) packet back to the transmitting side based on a determination of the contents of the NAVT.
1 Assignment
0 Petitions
Accused Products
Abstract
Embodiments of the present invention include a wireless access method based on a NAVT (Network allocation vector table), which is applied to a distributed wireless mobile communication system comprising a plurality of nodes, the NAVT comprises a packet type field and a duration field and is stored in the respective nodes of the communication system, comprising: on a transmitting side, determining whether only a RTS (request to send) item is contained in the NAVT when a packet arrives; sensing channel to judge whether the channel is busy after determining that only the RTS item is contained in the NAVT; sending a RTS packet based on the RTS item to the receiving side after determining that the channel is busy; and on a receiving side, determining whether the NAVT is empty or not when the RTS packet is received; sending a CTS (clear to send) packet back to the transmitting side after determining that the NAVT is empty.
100 Citations
29 Claims
-
1. A wireless access method based on Network allocation vector table (NAVT), which is applied to a distributed wireless mobile communication system comprising a plurality of nodes, the NAVT comprises a packet type field indicating whether a packet comes from a transmitting node or from a receiving node and a duration field indicating an expected length of a data transmission and is stored in the respective nodes of the communication system, comprising:
-
on a transmitting side, determining whether only a request to send (RTS) item indicating that a packet comes from a transmitting node is contained in the NAVT when a packet to be transmitted by the transmitting side arrives; sensing a channel to determine whether the channel is busy after determining that only the RTS item is contained in the NAVT; fitting a data length of the packet to be transmitted by the transmitting side to a length shorter than a length of a data transmission obtained by subtracting a predetermined value from the value indicated by the RTS item when it is determined that the channel is busy; sending a RTS packet including the fitted data length of the packet to be transmitted by the transmitting side, or a data packet with fitted data length; and on a receiving side, determining the contents of the NAVT is empty when the RTS packet is received; and sending a clear to send (CTS) packet back to the transmitting side based on a determination of the contents of the NAVT. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
-
-
16. A node in a distributed wireless mobile communication system comprising a plurality of nodes, comprising:
-
a Network allocation vector table (NAVT) storage timer unit to store a NAVT comprising a packet type field indicating whether a packet comes from a transmitting node or from a receiving node and a duration field indicating an expected length of a data transmission; a transmitting device to determine whether only a request to send (RTS) item indicating that a packet comes from a transmitting node is contained in the NAVT when a packet to be transmitted by the transmitting device arrives;
sensing channel to determine whether the channel is busy after determining that only the RTS item is contained in the NAVT;
fitting a data length of the packet to be transmitted by the transmitting device to a length shorter than a length of a data transmission obtained by subtracting a predetermined value from the value indicating by the RTS item when it is determined that the channel is busy; and
sending a RTS packet including the fitted data length of the packet to be transmitted by the transmitting device, or data packet with fitted data length; anda receiving device to determine the contents of the NAVT when the RTS packet is received; and
sending clear to send (CTS) packet back to the transmitting side on the basis of the determination of the contents of the NAVT. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
-
Specification