5G bandwidth part configuration method in CBRS fixed wireless access network
Various embodiments comprise systems, methods, and apparatus for allocating resources in a 5G network comprising Citizens Broadband Radio Service Device (CBSD) nodes configured for communicating via granted spectrum with customer premises equipment (CPE) supporting wireless access points (WAPs) and the like, wherein an initial small bandwidth part (BWP) is assigned to each CPE, a BWP update process provides to a policy control function a list of devices/capabilities consuming CPE bandwidth so that the PCF may calculate a new bandwidth requirement for the CPE, the new requirement being used by the CPE to generate a CPE UE capability information message for the CBSD node, the CBSD node assigning an appropriately sized BWP for the CPE.
1. A method for allocating resources in a 5G network comprising Citizens Broadband Radio Service Device (CBSD) nodes configured for communicating via granted spectrum with customer premises equipment (CPE) and user equipment (UE) to provide network services thereto, the method comprising:
at a policy control function (PCF) of a core network serving a CBSD node having at least one CPE connecting thereto and assigned a respective low resource bandwidth part (BWP), receiving from the CBSD node a list of CPE connected devices supported by the CBSD node; and
at the PCF, calculating for the at least one CPE, at least one respective bandwidth requirement sufficient to support respective ones of the CPE connected devices, and transmitting the at least one respective bandwidth requirement toward the CBSD node for use by the at least one CPE;
wherein the at least one respective bandwidth requirement is configured to cause the at least one CPE to determine CPE UE capability information sufficient to support the at least one respective bandwidth requirement, the CPE UE capability information enabling the CBSD node to assign a BWP to the at least one CPE sufficient to support the determined CPE UE capability information.
2. The method of claim 1 , wherein the PCF applies a traffic template to the list of CPE connected devices to determine the at least one respective bandwidth requirement.
3. The method of claim 1 , wherein the list of CPE connected devices comprises a list of CPE connected devices which are directly connected and indirectly connected to the CBSD node.
4. The method of claim 1 , wherein the low resource BWP is selected to provide sufficient bandwidth for one or more of the at least one CPE having a UE capability of “low bandwidth 5G terminal”.
5. The method of claim 1 , wherein the low resource BWP comprises a default BWP.
6. The method of claim 5 , further comprising configuring the at least one CPE with a BWP inactivity timer, wherein expiration of the BWP inactivity timer at the at least one CPE causes the at least one CPE to switch from an active BWP to the default BWP.
7. The method of claim 1 , wherein the low resource BWP is determined in response to the CPE UE capability information received by the CBSD node.
8. The method of claim 7 , wherein the CPE UE capability information comprises at least one of an uplink (UL) bandwidth capability and a downlink (DL) bandwidth capability.
9. The method of claim 8 , wherein the CPE UE capability information comprises at least one of UL buffer size and DL buffer size.
10. The method of claim 1 , wherein the list of CPE connected devices comprises a list of access terminals (ATs) connected to one or more wireless access points (WAPs) supported by the at least one CPE.
11. The method of claim 1 , wherein the list of CPE connected devices comprises a list of devices connected to one or more routers supported by the at least one CPE.
12. The method of claim 1 , wherein the list of CPE connected devices comprises a list of set top boxes (STBs) supported by the at least one CPE.
13. The method of claim 1 , wherein the at least one respective bandwidth requirement is calculated as:
CPEbw
=
Amount
of
traffic
for
all
UE
connected
to
CPE
(
(
OFDM
symbols
per
physical
RB
)
*
(
bits
per
OFDM
symbol
)
)
(
RB
bandwidth
)
.
14. The method of claim 13 , wherein the RB (resource block) bandwidth is 180 kHz.
15. The method of claim 1 , wherein the CBSD node is part of a fixed wireless access (FWA) network and configured to provide backhaul services to UE communicating thereto via the at least one CPE.
16. The method of claim 15 , wherein the UE comprise at least one of user terminals, fixed wireless access devices, and Internet of Things (IOT) devices.
17. The method of claim 1 , wherein the list of CPE connected devices supported by the CBSD node is associated with UECapabilityinformation messages transmitted by the at least one CPE to the CBSD node.
18. The method of claim 1 , wherein the list of CPE connected devices supported by the CBSD node is received in response to a triggering condition.
19. The method of claim 18 , wherein the triggering condition comprises the at least one CPE detecting a change in a number of access terminals (ATs) connected to a wireless access point (WAP) supported by the at least one CPE.
20. The method of claim 18 , wherein the triggering condition comprises the at least one CPE detecting a change in a number of UE or access terminals (ATs) directly or indirectly supported by the at least one CPE.
21. The method of claim 18 , wherein the triggering condition comprises the at least one CPE detecting an activation of a set top box or digital video recorder supported by the at least one CPE.
22. A system, comprising:
a core network configured to support a Fifth Generation (5G) network comprising a plurality of Citizens Broadband Radio Service Device (CBSD) nodes configured for communicating via granted spectrum with customer premises equipment (CPE) and user equipment (UE) to provide network services thereto;
wherein the core network comprises a policy control function (PCF) configured to receive from each CBSD node a respective list of CPE connected devices supported by the CBSD node, the PCF responsively calculating for each CPE a respective bandwidth requirement sufficient to support respective CPE connected devices, and transmitting the calculated CPE bandwidth requirement toward the respective CBSD for use by the respective CPE; and
wherein each CPE bandwidth requirement is configured to cause a respective CPE to determine respective connected UE capability information sufficient to support the CPE bandwidth requirement, the UE capability information enabling the CBSD to assign a BWP to the CPE sufficient to support respective connected UE.
23. A computer readable apparatus comprising a non-transitory storage medium, the non-transitory storage medium comprising at least one computer program having a plurality of instructions, the plurality of instructions configured to, when executed on a processing apparatus, cause a policy control function (PCF) of a core network to:
receive, from a CBSD node, a data structure of one or more computerized devices supported by at least one of (i) the CBSD node, or (iii) consumer premises equipment (CPE);
calculate for the CPE, a bandwidth requirement sufficient to support the one or more computerized devices; and
transmit the bandwidth requirement toward the CBSD node for use by the CPE;
wherein the bandwidth requirement enables the CPE to determine capability information sufficient to support the bandwidth requirement, the capability information enabling the CBSD node to assign a resource bandwidth part (BWP) to the CPE, the BWP being sufficient to support the capability information.