Multilink uplink grant management method
AssigneeCharter Communications Operating, LLC
InventorVolkan Sevindik
Life of this patent
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Abstract
Various embodiments comprise systems, methods, and apparatus for enabling UE attached to a mobile network via a mid-band CBSD node to continue transmitting upload data to the mid-band CBSD node even in the event of a loss of Physical Downlink Control Channels (PDCCH) coverage of the CBSD node resulting in a failure of the UE to receive uplink grant schedule updates. Various embodiments contemplate that the UE responsively attaches to a low-band node which, based on physical cell ID (PCI) of the CBSD node, retrieves updated uplink grant schedules from the CBSD node via a backhaul network and provides the uplink grant schedules to the UE.
Claims27
A method for allocating resources in a 5G network comprising Citizens Broadband Radio Service Device (CBSD) nodes and non-CBSD nodes configured for communicating with user equipment (UE), the method comprising:
- at a non-CBSD node, receiving at least one UE message reporting a physical cell ID (PCI) of a CBSD node to which a reporting UE was attached prior to losing Physical Downlink Control Channels (PDCCH) coverage of the CBSD;
- at the non-CBSD node, transmitting toward a 5G core manager a message configured to cause a session management function (SMF) to resolve an internet protocol (IP) address associated with reported PCI, and to forward to the non-CBSD node a message including the resolved IP address of reported PCI;
- at the non-CBSD node, using the resolved IP address of reported PCI to transmit toward a corresponding CBSD node a request for a new uplink grant schedule;
- and
- at the non-CBSD node, transmitting a received new UL grant schedule toward at least one reporting UE, the new UL grant schedule being configured to enable the reporting UE to transmit data toward the CBSD node via resource blocks allocations defined within the UL grant schedule.
In a 5G network comprising Citizens Broadband Radio Service Device (CBSD) nodes and non-CBSD nodes configured for communicating with user equipment (UE), a non-CBSD node configured for:
- receiving a UE message reporting a physical cell ID (PCI) of a CBSD node to which the UE was attached prior to losing Physical Downlink Control Channels (PDCCH) coverage of the CBSD;
- transmitting toward a 5G core manager a message configured to cause a session management function (SMF) to resolve an internet protocol (IP) address associated with the reported PCI, and to forward to the non-CBSD node a message including the resolved IP address of the reported PCI;
- using the resolved IP address of the reported PCI to transmit toward a corresponding CBSD node a request for a new uplink grant schedule;
- and
- transmitting a received new UL grant schedule toward a source UE of the received UE message, the new UL grant schedule being configured to enable the source UE to transmit data toward the CBSD node via resource blocks allocations defined within the UL grant schedule.
In a 5G network comprising Citizens Broadband Radio Service Device (CBSD) nodes and non-CBSD nodes configured for communicating with user equipment (UE), UE configured for:
- transmitting toward a non-CBSD node a UE message reporting a physical cell ID (PCI) of a CB SD node to which the UE was attached prior to losing Physical Downlink Control Channels (PDCCH) coverage of the CBSD, the UE message being configured to (1) cause a session management function (SMF) to resolve an interne protocol (IP) address associated with the reported PCI, and to forward to the non-CBSD node a message including the resolved IP address of the reported PCI, (2) cause the non-CBSD node to use the resolved IP address of the reported PCI to transmit toward a corresponding CB SD node a request for a new uplink grant schedule, and (3) cause the corresponding CBSD node to transmit a new UL grant schedule toward the UE;
- receiving the new UL grant schedule;
- and
- transmitting output buffer data toward the CBSD node via resource blocks allocations defined within the new UL grant schedule.
Dependencies are inferred from the claim text.