Method and apparatus for dynamic channel access within wireless networks
First Claim
1. A wireless mobile communication unit to transmit and receive information within a wireless communications network including a plurality of hops, wherein said information includes deterministic data with a periodic occurrence and non-deterministic data with a random frequency of occurrence, said wireless mobile communication unit comprising:
- a transmitter to transmit outgoing information to at least one other wireless mobile communication unit within the network;
a receiver to receive incoming information from at least one other wireless mobile communication unit within the network; and
a processor to control the transmission and reception of the outgoing and incoming information within said wireless mobile communication unit, wherein said processor includes;
a circuit interface module to facilitate transfer of said deterministic data over at least one communication circuit established within said network for transferring said deterministic data by a wireless mobile communication unit of said network serving as a controller unit, wherein each communication circuit is associated with a corresponding destination communication unit, wherein said at least one communication circuit employs a time division multiplexing scheme including one or more time slots allocated to transfer said deterministic data to said associated destination unit, and wherein at least one said communication circuit spans across at least two said hops of said network and transfers said deterministic data through at least one intermediate wireless mobile communication unit to said corresponding destination unit;
a transfer module to transfer said non-deterministic data with other communication units via a communication scheme other than said at least one communication circuit with said time division multiplexing scheme utilized for said deterministic data; and
a controller module to establish said at least one communication circuit between communication units to transfer said deterministic data and to manage resources and allocate said time slots for each said communication circuit within said wireless network in response to said wireless mobile communication unit being designated as said controller unit, wherein said time slots for transmission of said deterministic data are allocated to at least two wireless mobile communication units in communication range of each other and within adjacent hops of said network.
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Abstract
The present invention protocol offers guaranteed Quality of Service (QoS) for a predetermined number of circuits in a highly dynamic, scalable network. The present invention protocol employs a Time Division Multiple Access (TDMA) reservation scheme to transmit deterministic data (e.g., image data) to a destination, while utilizing a Carrier Sense Multiple Access/Collision Avoidance (CSMA/CA) contention scheme to support non-deterministic data traffic. The protocol operates over a link-state based routing protocol that reliably floods routing and resource reservation information to the nodes in the network. Moreover, the present invention capitalizes on certain properties of a radio, such as a RAKE type receiver, to enable simultaneous re-transmissions of resource and route reservation information to constructively interfere and enhance the strength and range of the signal.
90 Citations
32 Claims
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1. A wireless mobile communication unit to transmit and receive information within a wireless communications network including a plurality of hops, wherein said information includes deterministic data with a periodic occurrence and non-deterministic data with a random frequency of occurrence, said wireless mobile communication unit comprising:
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a transmitter to transmit outgoing information to at least one other wireless mobile communication unit within the network; a receiver to receive incoming information from at least one other wireless mobile communication unit within the network; and a processor to control the transmission and reception of the outgoing and incoming information within said wireless mobile communication unit, wherein said processor includes; a circuit interface module to facilitate transfer of said deterministic data over at least one communication circuit established within said network for transferring said deterministic data by a wireless mobile communication unit of said network serving as a controller unit, wherein each communication circuit is associated with a corresponding destination communication unit, wherein said at least one communication circuit employs a time division multiplexing scheme including one or more time slots allocated to transfer said deterministic data to said associated destination unit, and wherein at least one said communication circuit spans across at least two said hops of said network and transfers said deterministic data through at least one intermediate wireless mobile communication unit to said corresponding destination unit; a transfer module to transfer said non-deterministic data with other communication units via a communication scheme other than said at least one communication circuit with said time division multiplexing scheme utilized for said deterministic data; and a controller module to establish said at least one communication circuit between communication units to transfer said deterministic data and to manage resources and allocate said time slots for each said communication circuit within said wireless network in response to said wireless mobile communication unit being designated as said controller unit, wherein said time slots for transmission of said deterministic data are allocated to at least two wireless mobile communication units in communication range of each other and within adjacent hops of said network. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A wireless communications network including a plurality of hops for transferring information, wherein said information includes deterministic data with a periodic occurrence and non-deterministic data with a random frequency of occurrence, said communications network comprising:
a plurality of wireless mobile communication nodes for transferring said deterministic data therebetween over at least one communication circuit established within said network for transferring said deterministic data and employing a time division multiplexing scheme including one or more time slots allocated to transfer said deterministic data, wherein each communication circuit is established by a wireless mobile communication node of said network serving as a controller node and is associated with a corresponding destination node, and for transferring said non-deterministic data via a communication scheme other than said at least one communication circuit with said time division multiplexing scheme utilized for said deterministic data, wherein a wireless mobile node within said network is designated as said controller node to establish said at least one communication circuit between communication nodes to transfer said deterministic data and to manage resources and allocate said time slots for each said communication circuit within said wireless network, wherein at least one said communication circuit spans across at least two said hops of said network and transfers said deterministic data through at least one intermediate wireless mobile communication node to said corresponding destination node, and wherein said time slots for transmission of said deterministic data are allocated to at least two wireless mobile communication nodes in communication range of each other and within adjacent hops of said network. - View Dependent Claims (15, 16, 17, 18, 19)
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20. A method of transferring information between wireless mobile communication units within a wireless network including a plurality of hops, wherein said information includes deterministic data with a periodic occurrence and non-deterministic data with a random frequency of occurrence, said method comprising:
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(a) transferring said deterministic data over at least one communication circuit established within said network for transferring said deterministic data and employing a time division multiplexing scheme including one or more time slots allocated to transfer said deterministic data, wherein each communication circuit is established by a wireless mobile communication unit of said network serving as a controller unit and is associated with a corresponding destination communication unit, and transferring said non-deterministic data with other communication units via a communication scheme other than said at least one communication circuit with said time division multiplexing scheme utilized for said deterministic data; and (b) establishing said at least one communication circuit between communication units to transfer said deterministic data and managing resources and allocating said time slots for each said communication circuit within said wireless network via a wireless mobile communication unit designated as said controller unit, wherein at least one said communication circuit spans across at least two said hops of said network and transfers said deterministic data through at least one intermediate wireless mobile communication unit to said corresponding destination communication unit, and wherein said time slots for transmission of said deterministic data are allocated to at least two wireless mobile communication units in communication range of each other and within adjacent hops of said network. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification