Autonomous enhanced node B
First Claim
1. An Enhanced NodeB (eNB) comprising:
- memory; and
hardware processing circuitry, configured to;
detect disruption of a first S1 interface to a Core Network (CN);
evaluate whether the eNB should assume a role of an autonomous eNB;
responsive to assuming the role of the autonomous eNB, configuring the processing circuitry to;
establish a second S1 interface with at least one other eNB; and
provide a subset of functions provided by the CN to the at least one other eNB; and
responsive to not assuming the role of the autonomous eNB, configuring the processing circuitry to;
establish a second S1 interface with an eNB that has assumed the role of the autonomous eNB; and
rely on the autonomous eNB to provide the subset of functions;
wherein;
the processing circuitry is further configured to;
evaluate whether the eNB should assume the role of the autonomous eNB by being configured to compare a master priority of the eNB to master priorities of the at least one other eNB; and
select as the autonomous eNB the eNB with a highest associated master priority;
the master priorities of the at least one other eNB are computed by the eNB; and
the master priorities of the at least one other eNB are computed after the S1 interface is disrupted.
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Accused Products
Abstract
Embodiments allow one or more eNBs that become isolated from core network entities (e.g., evolved packet core entities such as mobility management entity, serving gate way, packet data network gateway, and so forth) to form a resilient mode network. Such a network can function in a limited fashion and provide for UE to UE communications within the resilient mode network coverage area. One or more of the eNBs function as an autonomous eNB and provide a subset of core network functions that allow UE to UE communications within the resilient mode network coverage area. Embodiments disclosed herein select which eNB functions as the autonomous eNB and then the other eNBs establish an S1-MME and/or S1-U interface with the autonomous eNB.
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Citations
18 Claims
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1. An Enhanced NodeB (eNB) comprising:
- memory; and
hardware processing circuitry, configured to;detect disruption of a first S1 interface to a Core Network (CN); evaluate whether the eNB should assume a role of an autonomous eNB; responsive to assuming the role of the autonomous eNB, configuring the processing circuitry to; establish a second S1 interface with at least one other eNB; and provide a subset of functions provided by the CN to the at least one other eNB; and responsive to not assuming the role of the autonomous eNB, configuring the processing circuitry to; establish a second S1 interface with an eNB that has assumed the role of the autonomous eNB; and rely on the autonomous eNB to provide the subset of functions; wherein; the processing circuitry is further configured to; evaluate whether the eNB should assume the role of the autonomous eNB by being configured to compare a master priority of the eNB to master priorities of the at least one other eNB; and select as the autonomous eNB the eNB with a highest associated master priority; the master priorities of the at least one other eNB are computed by the eNB; and the master priorities of the at least one other eNB are computed after the S1 interface is disrupted. - View Dependent Claims (3, 18)
- memory; and
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2. An Enhanced NodeB (eNB) comprising hardware processing circuitry configured to:
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detect disruption of a first S1 interface to a Core Network (CN); evaluate whether the eNB should assume the role of an autonomous eNB; responsive to assuming the role of the autonomous eNB, configuring the processing circuitry to; establish a second S1 interface with at least one other eNB; and provide a subset of functions provided by the CN to the at least one other eNB; and responsive to not assuming the role of the autonomous eNB, configuring the processing circuitry to; establish a second S1 interface with an eNB that has assumed the role of the autonomous eNB; and rely on the autonomous eNB to provide the subset of functions; wherein the processing circuitry is further configured to, during operation; evaluate whether the eNB should assume the role of the autonomous eNB by being configured to compare a master priority of the eNB to master priorities of the at least one other eNB; and select as the autonomous eNB the eNB with a highest associated master priority. - View Dependent Claims (4, 5, 6)
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7. A method performed by an Enhanced NodeB (eNB) comprising:
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detecting disruption of a first S1 interface to a Core Network (CN); selecting an eNB to be an autonomous eNB; establishing a second S1 interface with the autonomous eNB; and relying on the autonomous eNB to provide a subset of functions provided by the CN; wherein selecting the eNB to be the autonomous eNB is performed by executing operations comprising; receiving a first message from a second eNB, the first message comprising a master priority associated with the second eNB; and sending an S1 setup request message to the second eNB in order to use the second eNB as the autonomous eNB. - View Dependent Claims (8, 9, 10)
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11. A method performed by an Enhanced NodeB (eNB) comprising:
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detecting disruption of a first S1 interface to a Core Network (CN); selecting an eNB that is not in communication with the CN to be an autonomous eNB based on the detecting of the disruption; subsequent to the selecting, establishing a second S1 interface with the autonomous eNB; relying on the autonomous eNB to provide a subset of functions provided by the CN; detecting availability the first S1 interface to the CN; sending a S1 setup request message to the CN; and sending a S1 disconnect request message to the autonomous eNB.
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12. A computer storage medium comprising computer executable instructions that when executed configure a device to:
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detect disruption of a first S1 interface to a Core Network (CN); send a first message advertising the eNB is an autonomous eNB and implements a subset of capabilities provided by the CN; establish a second S1 interface with a second eNB; and provide the subset of capabilities to the second eNB; wherein; the first message comprises at least one of; an S1 transport network layer (TNL) address;
ora master priority that identifies the priority of the eNB assuming the role of an autonomous eNB. - View Dependent Claims (13, 14, 15, 16)
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17. An Enhanced NodeB (eNB) device comprising:
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at least one antenna; transceiver circuitry coupled to the at least one antenna; memory; a processor coupled to the memory and transceiver circuitry; and instructions, stored in the memory, which when executed cause the eNB processor to; detect disruption of a first S1 interface to a Core Network (CN); select an eNB that is not in communication with the CN to be an autonomous eNB, based on the detected disruption; subsequent to the select, send a message to the autonomous eNB to establish a second S1 interface with the autonomous eNB; determine whether the second S1 interface was successfully established; and responsive to determining that the second S1 interface was not successfully established; select a different autonomous eNB; and send a second message to the different autonomous eNB to establish the second S1 interface with the different autonomous eNB.
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Specification