System and method for maintaining a backup radio operating parameter list in a secondary use communication system
First Claim
1. A method for acquiring radio operating parameters in a radio communications network, comprising:
- obtaining, at a first radio node in the radio communications network, first radio operating parameters from at least one authorization server, the first radio operating parameters based on a location of at least one node in the radio communications network, wherein the first radio operating parameters include at least a first list of available channels and a first set of associated maximum allowed transmission power levels;
obtaining, at a second radio node in the radio communications network which is in radio communication with the first radio node, second radio operating parameters from an authorization server, the second radio operating parameters based on a location of the at least one radio node, wherein the second radio operating parameters include at least a second list of available channels and a second set of associated maximum allowed transmission power levels;
exchanging the first and second radio operating parameters amongst the first and second radio nodes;
determining common radio operating parameters from the first and second radio operating parameters, wherein the common radio operating parameters include the intersection of the first list and the second list of available channels, and their associated maximum allowed transmission power levels; and
distributing the common radio operating parameters to the first and second radio nodes.
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Accused Products
Abstract
A radio communication system (100) provides a radio air interface at a master node (102) for subscriber units associated with the master node. Among the subscriber units are several slave nodes (104, 106). The communication system has the ability to operate as a secondary user in unused spectrum portions of a frequency band otherwise reserved for primary operators, such as licensed broadcasters. The master node accesses an authorization server (108) to obtain a list of unused channels in the region of the master node. Each slave node also contacts the authorization server to obtain a list of unused channels in the region where each respective slave node is located, via another network (118, 121). The unused channels common to the slave nodes and the master node are used to create a backup radio operating parameter list which is used by the master node if a fault occurs between the master node the authorization server.
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Citations
21 Claims
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1. A method for acquiring radio operating parameters in a radio communications network, comprising:
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obtaining, at a first radio node in the radio communications network, first radio operating parameters from at least one authorization server, the first radio operating parameters based on a location of at least one node in the radio communications network, wherein the first radio operating parameters include at least a first list of available channels and a first set of associated maximum allowed transmission power levels; obtaining, at a second radio node in the radio communications network which is in radio communication with the first radio node, second radio operating parameters from an authorization server, the second radio operating parameters based on a location of the at least one radio node, wherein the second radio operating parameters include at least a second list of available channels and a second set of associated maximum allowed transmission power levels; exchanging the first and second radio operating parameters amongst the first and second radio nodes; determining common radio operating parameters from the first and second radio operating parameters, wherein the common radio operating parameters include the intersection of the first list and the second list of available channels, and their associated maximum allowed transmission power levels; and distributing the common radio operating parameters to the first and second radio nodes. - View Dependent Claims (2, 4)
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3. A method for acquiring radio operating parameters in a radio communications network, comprising:
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obtaining, at a first radio node in the radio communications network, first radio operating parameters from at least one authorization server the first radio operating parameters based on a location of at least one node in the radio communications network; obtaining, at a second radio node in the radio communications network which is in radio communication with the first radio node, second radio operating parameters from an authorization server, the second radio operating parameters based on a location of the at least one radio node; exchanging the first and second radio operating parameters amongst the first and second radio nodes; determining common radio operating parameters from the first and second radio operating parameters; distributing the common radio operating parameters to the first and second radio nodes; and upon detection of a fault at the first radio node preventing further obtaining of radio parameters from the authorization server, at least the second radio node commences operating in accordance with common radio operating parameters.
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5. A method for acquiring radio operating parameter lists in a radio communications network, comprising:
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obtaining, at a master node, a master radio operating parameter list from an authorization server, wherein the master radio operating parameter list is based on a location of the master node; assigning a plurality of slave nodes that are in radio association with the master node to each acquire a slave radio operating parameter list from the authorization server based on the locations of each of the slave nodes and using a different network than used by the master node to obtain the master radio operating parameter list; deriving the backup radio operating parameter list from the master and slave radio operating parameter lists; distributing the backup radio operating parameter list to at least one slave node; and upon detection of a fault at the master node preventing further obtaining of radio parameters from the authorization server, the at least one slave node commences operating in accordance with the backup radio operating parameter list. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13)
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14. A system for acquiring radio operating parameter lists in a radio communications network, comprising:
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a master node configured to provide a radio communication air interface in the vicinity of the master node, wherein the master node is further configured to obtain a master radio operating parameter list for secondary-use operation from an authorization server, the master radio operating parameter list indicating available channels for secondary-use at a location of the master node; and a plurality of slave nodes associated with the master node via the radio communication air interface, wherein each slave node obtains, from the authorization server via an alternative network access point, a slave radio operating parameter list, each slave radio operating parameter list indicating available channels for secondary-use at a location of the requesting slave node, wherein the communication system creates a backup radio operating parameter list of channels common to the master and slave radio operating parameter lists, and wherein upon the occurrence of a fault between the master node and the authorization server the backup radio operating parameter list is used by at least one of the plurality of slave nodes, to select channels for secondary use. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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Specification