Licensed assisted access in a converged network
Various embodiments comprise systems, methods, architectures, mechanisms and apparatus for allocating resources in a converged network to support, illustratively, Long Term Evolution (LTE) Licensed Assisted Access (LAA) transmission for supplemental downlink mode. Various embodiments contemplate allowing LTE eNBs having CBSD capability to use spectrum normally associated with a wireless access point (WAP) if such spectrum can be made available based on, for example, WiFi spectrum or channel measurements of interference such as provided by UE proximate the WAP and connected to the CBSD.
1. A method for allocating resources in a converged network, comprising:
receiving, at a Citizens Broadband Radio Service Device (CBSD) node in communication with user equipment (UE) attached thereto, a measurement from the UE of interference associated with a wireless access point (WAP) proximate the UE;
transmitting, from the CBSD node toward a WiFi controller (WC), a resource reservation (RR) request including the measurement of interference;
receiving, at the CBSD node, a RR response indicating that a portion of spectrum normally associated with the WAP is allowed to be used by the CBSD node for an allowed duration of time; and
transmitting, toward the UE, a message configured to cause the UE to coordinate with the CBSD node in a Long Term Evolution (LTE) Licensed Assisted Access (LAA) mode to use the allowed spectrum for the allowed duration of time.
2. The method of claim 1 , wherein the measurement of interference is received from the UE.
3. The method of claim 2 , wherein the measurement of interference is generated by the UE measuring interference via a WiFi radio.
4. The method of claim 3 , wherein the WiFi radio is used to measure interference associated with at least one of 5 GHz spectral region activity, 2.4 GHz spectral region activity, and WiFi channel spectral region activity.
5. The method of claim 4 , wherein the measurement of interference comprises one or more Received Signal Strength Indicator (RSSI) measurements, and wherein a RSSI exceeding a threshold level is indicative of a spectral region not being allowed to be used by the CBSD.
6. The method of claim 1 , wherein the measurement of interference further comprises a collision rate, wherein a collision rate exceeding a threshold level is indicative of a spectral region not being allowed to be used by the CBSD.
7. The method of claim 1 , wherein the a portion of spectrum normally associated with the WAP and allowed to be used by the CBSD node for an allowed duration of time comprises a spectral region associated with one or more WiFi channels underutilized by the WAP.
8. The method of claim 1 , wherein the RR request comprises at least one of a DL throughput demand, an amount of spectrum needed, a duration of time the spectrum is needed, at least one measured interference level associated with a WAP proximate the CBSD node, and an expected Quality of Service (QoS).
9. The method of claim 8 , wherein the RR response is indicative of an allowed spectral region for use by the CBSD node and an allowed duration for the CBSD to use the allowed spectral region.
10. The method of claim 8 , wherein the CBSD provides mobile network services to UE via an evolved packet core (EPC), and the CBSD communicates with the WC via provider equipment (PE) associated with the EPC.
11. The method of claim 1 , further comprising transmitting toward the WC an end-of-transmission (EOT) message after the expiration of the allowed duration, the EOT message configured to cause the WC to release the WAP resources.
12. The method of claim 11 , further comprising:
determining, at the WC and using statistics associated with a WAP proximate the CBSD, whether any resources associated with the WAP are available for use by the CBSD; and
transmitting, toward the CBSD node, the RR response indicative of an allowed spectral region for use by the CBSD node and an allowed duration for the CBSD to use the allowed spectral region.
13. The method of claim 11 , wherein the WC is configured to sequentially process each of a plurality of RR requests.
14. The method of claim 12 , wherein the WC is configured to sequentially process each of a plurality of RR requests from multiple CBSD nodes in communication with respective groups of UE.
15. The method of claim 1 , wherein the CBSD node and UE operate in a supplemental downlink mode of LAA.
16. A system, comprising:
at least one Citizens Broadband Radio Service Device (CBSD) node configured to provide network services to user equipment (UE) attached thereto;
at least one wireless access point (WAP) configured to provide network services to UE connected thereto; and
a WiFi controller (WC), configured to receive a resource reservation (RR) request including a measurement of interference associated with a WAP proximate UE attached to a CBSD node to determine whether a portion of spectrum normally used by the WAP is allowed to be used by the CBSD node for an allowed duration of time to provide network services to UE attached to the CBSD node, and configured to transmit a RR response indicating an allowed portion of spectrum and allowed duration of time;
the CBSD node transmitting, toward the UE, a message configured to cause the UE to coordinate with the CBSD node in a Long Term Evolution (LTE) Licensed Assisted Access (LAA) mode to use the allowed spectrum for the allowed duration of time.
17. The system of claim 16 , wherein a WiFi radio of UE proximate the WAP and attached to the CBSD node is used to measure interference associated with at least one of 5 GHz spectral region activity, 2.4 GHz spectral region activity, and WiFi channel spectral region activity.
18. The system of claim 16 , wherein the measurement of interference comprises one or more Received Signal Strength Indicator (RSSI) measurements, wherein a RSSI exceeding a threshold level is indicative of a spectral region not being allowed to be used by the CBSD.
19. The system of claim 16 , wherein the measurement of interference comprises a WiFi channel collision rate, wherein a collision rate exceeding a threshold level is indicative of a spectral region not being allowed to be used by the CBSD.
20. A tangible and non-transitory computer readable storage medium storing instructions which, when executed by a computer, adapt the operation of the computer to provide a method for allocating resources in a converged network, the method comprising:
receiving, at a Citizens Broadband Radio Service Device (CBSD) node in communication with user equipment (UE) attached thereto, a measurement of interference associated with a wireless access point (WAP) proximate the UE;
transmitting, from the CBSD node toward a WiFi controller (WC), a resource reservation (RR) request including the measurement of interference;
receiving, at the CBSD node, a RR response indicating that a portion of spectrum normally associated with the WAP is allowed to be used by the CBSD node for an allowed duration of time; and
transmitting, toward the UE, a message configured to cause the UE to coordinate with the CBSD node in a Long Term Evolution (LTE) Licensed Assisted Access (LAA) mode to use the allowed spectrum for the allowed duration of time.