Systems and methods for virtual bandwidth parts
Disclosed is creation of a very narrow bandwidth part (BWP), referred to herein as a virtual BWP. The virtual BWP is created within an operating channel that is not supported by 3rd Generation Partnership Project (3GPP) current standards (e.g., below 5 MHz). This enables a wireless network to be even more flexible in supporting a variety of use cases. In particular, the network artificially creates a small virtual BWP and assigns it to users without requiring any explicit signaling to the user for creating the virtual BWP. The virtual BWPs will limit the physical downlink control channel (PDCCH), the physical downlink shared channel (PDSCH) data region, the physical uplink control channel (PUCCH) and the physical uplink shared channel (PUSCH) for a given user which can be associated with slicing.
1 . A method comprising:
configuring, via radio resource control (RRC) signaling, a user equipment (UE) with a fifth generation (5G) New radio (NR) wireless network bandwidth part (BWP) that is a contiguous set of physical resource blocks (PRBs) from a contiguous subset of common resource blocks on a wireless carrier channel, wherein the BWP has a bandwidth that is at least 5 MHz and comprises at least 25 physical resource blocks (PRBs) and the BWP enables the UE to operate, when the BWP is active, within the bandwidth of the BWP that is narrower than a bandwidth of the wireless carrier channel;
creating for the UE, via PRB scheduling in the 5G NR wireless network, a virtual BWP that has a bandwidth of less than 5 MHz and that comprises less than 25 PRBs, wherein the virtual BWP enables the UE to operate within the bandwidth of the virtual BWP when the virtual BWP is active;
restricting a physical downlink control channel (PDCCH) for the UE to be only within the bandwidth of the virtual BWP in response to the virtual BWP being active;
restricting a physical downlink shared channel (PDSCH) for the UE to be only within the bandwidth of the virtual BWP in response to the virtual BWP being active;
restricting a physical uplink control channel (PUCCH) for the UE to be only within the bandwidth of the virtual BWP in response to the virtual BWP being active;
restricting a physical uplink shared channel (PUSCH) for the UE to be only within the bandwidth of the virtual BWP in response to the virtual BWP being active;
enabling selection of how many PRBs will comprise the virtual BWP, wherein a particular number of PRBs that will comprise the virtual BWP is selectable from one PRB to 24 PRBs;
receiving input indicative of a selected number of PRBs which will comprise the virtual BWP, wherein the selected number of PRBs which will comprise the virtual BWP falls within a range of one PRB to 24 PRBs;
restricting the PDCCH for the UE to be only within the selected number of PRBs in response to the virtual BWP being active;
restricting the PDSCH for the UE to be only within the selected number of PRBs in response to the virtual BWP being active;
restricting the PUCCH for the UE to be only within the selected number of PRBs in response to the virtual BWP being active; and
restricting the PUSCH for the UE to be only within the selected number of PRBs in response to the virtual BWP being active;
associating with the virtual BWP a 5G NR radio access network (RAN) slice ID;
mapping any user associated with the slice ID to the virtual BWP; and
for each user of a plurality of users associated with the slice ID:
restricting the PDCCH for a UE associated with the user to be only within the selected number of PRBs when the virtual BWP is active for the UE associated with the user:
restricting the PDSCH for the UE associated with the user to be only within the selected number of PRBs when the virtual BWP is active for the UE associated with the user:
restricting the PUCCH for a UE associated with the user to be only within the selected number of PRBs when the virtual BWP is active for the UE associated with the user; and
restricting the PUSCH for the UE associated with the user to be only within the selected number of PRBs when the virtual BWP is active for the UE associated with the user.
2 . The method of claim 1 , further comprising:
restricting PRB scheduling for the UE to the selected number of PRBs for the virtual BWP in response to the virtual BWP being activated.
3 . The method of claim 2 wherein the restricting the PRB scheduling includes:
configuring a specific range of specific PRBs, wherein a size of the specific range is the selected number of PRBs;
assigning the specific range of specific PRBs to the virtual BWP for use by the PDCCH in response to the virtual BWP being activated; and
assigning the specific range of specific PRBs to the virtual BWP for use by the PDSCH in response to the virtual BWP being activated;
assigning the specific range of specific PRBs to the virtual BWP for use by the PUCCH in response to the virtual BWP being activated; and
assigning the specific range of specific PRBs to the virtual BWP for use by the PUSCH in response to the virtual BWP being activated.
4 . The method of claim 2 wherein the restricting the PRB scheduling includes:
in response to the virtual BWP being activated, enabling use by the PDCCH of any available PRB in the wireless carrier channel up to the selected number of PRBs;
in response to the virtual BWP being activated, enabling use by the PDSCH of any available PRB in the wireless carrier channel up to the selected number of PRBs;
in response to the virtual BWP being activated, enabling use by the PUCCH of any available PRB in the wireless carrier channel up to the selected number of PRBs; and
in response to the virtual BWP being activated, enabling use by the PUSCH of any available PRB in the wireless carrier channel up to the selected number of PRBs.
5 . The method of claim 2 wherein the selected number of PRBs for the virtual BWP is 10 PRBs.
6 . A system comprising:
at least one processor; and
a memory coupled to the at least one processor, the memory storing instructions that, when executed by the at least one processor, cause the system to perform operations including:
configuring, via radio resource control (RRC) signaling, a user equipment (UE) with a fifth generation (5G) New radio (NR) wireless network bandwidth part (BWP) that is a contiguous set of physical resource blocks (PRBs) from a contiguous subset of common resource blocks on a wireless carrier channel, wherein the BWP has a bandwidth that is at least 5 MHz and comprises at least 25 physical resource blocks (PRBs) and the BWP enables the UE to operate, when the BWP is active, within the bandwidth of the BWP that is narrower than a bandwidth of the wireless carrier channel;
creating for the UE, via PRB scheduling in the 5G NR wireless network, a virtual BWP that has a bandwidth of less than 5 MHz and that comprises less than 25 PRBs, wherein the virtual BWP enables the UE to operate within the bandwidth of the virtual BWP when the virtual BWP is active;
restricting a physical downlink control channel (PDCCH) for the UE to be only within the bandwidth of the virtual BWP in response to the virtual BWP being active;
restricting a physical downlink shared channel (PDSCH) for the UE to be only within the bandwidth of the virtual BWP in response to the virtual BWP being active;
enabling selection of how many PRBs will comprise the virtual BWP, wherein a particular number of PRBs that will comprise the virtual BWP is selectable from one PRB to 24 PRBs:
receiving input indicative of a selected number of PRBs which will comprise the virtual BWP, wherein the selected number of PRBs which will comprise the virtual BWP falls within a range of one PRB to 24 PRBs;
restricting the PDCCH for the UE to be only within the selected number of PRBs in response to the virtual BWP being active;
restricting the PDSCH for the UE to be only within the selected number of PRBs in response to the virtual BWP being active:
associating with the virtual BWP a 5G NR radio access network (RAN) slice ID;
mapping any user associated with the slice ID to the virtual BWP; and
for each user of a plurality of users associated with the slice ID:
restricting the PDCCH for a UE associated with the user to be only within the selected number of PRBs when the virtual BWP is active for the UE associated with the user; and
restricting the PDSCH for the UE associated with the user to be only within the selected number of PRBs when the virtual BWP is active for the UE associated with the user.
7 . The system of claim 6 , wherein the operations further comprise:
restricting PRB scheduling for the UE to the selected number of PRBs for the virtual BWP in response to the virtual BWP being activated.
8 . The system of claim 7 wherein the restricting the PRB scheduling includes:
configuring a specific range of specific PRBs, wherein a size of the specific range is the selected number of PRBs;
assigning the specific range of specific PRBs to the virtual BWP for use by the PDCCH in response to the virtual BWP being activated; and
assigning the specific range of specific PRBs to the virtual BWP for use by the PDSCH in response to the virtual BWP being activated.
9 . The system of claim 7 wherein the restricting the PRB scheduling includes:
in response to the virtual BWP being activated, enabling use by the PDCCH of any available PRB in the wireless carrier channel up to the selected number of PRBs; and
in response to the virtual BWP being activated, enabling use by the PDSCH of any available PRB in the wireless carrier channel up to the selected number of PRBs.
10 . The system of claim 7 wherein the selected number of PRBs for the virtual BWP is 10 PRBs.
11 . A non-transitory computer-readable storage medium having computer-executable instructions stored thereon that, when executed by at least one processor, cause a system to perform operations including:
configuring, via radio resource control (RRC) signaling, a user equipment (UE) with a fifth generation (5G) New radio (NR) wireless network bandwidth part (BWP) that is a contiguous set of physical resource blocks (PRBs) from a contiguous subset of common resource blocks on a wireless carrier channel, wherein the BWP has a bandwidth that is at least 5 MHz and comprises at least 25 physical resource blocks (PRBs) and the BWP enables the UE to operate, when the BWP is active, within the bandwidth of the BWP that is narrower than a bandwidth of the wireless carrier channel;
creating for the UE, via PRB scheduling in the 5G NR wireless network, a virtual BWP that has a bandwidth of less than 5 MHz and that comprises less than 25 PRBs, wherein the virtual BWP enables the UE to operate within the bandwidth of the virtual BWP when the virtual BWP is active;
restricting a physical downlink control channel (PDCCH) for the UE to be only within the bandwidth of the virtual BWP in response to the virtual BWP being active;
restricting a physical downlink shared channel (PDSCH) for the UE to be only within the bandwidth of the virtual BWP in response to the virtual BWP being active;
enabling selection of how many PRBs will comprise the virtual BWP, wherein a particular number of PRBs that will comprise the virtual BWP is selectable from one PRB to 24 PRBs;
receiving input indicative of a selected number of PRBs which will comprise the virtual BWP, wherein the selected number of PRBs which will comprise the virtual BWP falls within a range of one PRB to 24 PRBs;
restricting the PDCCH for the UE to be only within the selected number of PRBs in response to the virtual BWP being active:
restricting the PDSCH for the UE to be only within the selected number of PRBs in response to the virtual BWP being active:
associating with the virtual BWP a 5G NR radio access network (RAN) slice ID;
mapping any user associated with the slice ID to the virtual BWP; and
for each user of a plurality of users associated with the slice ID:
restricting the PDCCH for a UE associated with the user to be only within the selected number of PRBs when the virtual BWP is active for the UE associated with the user; and
restricting the PDSCH for the UE associated with the user to be only within the selected number of PRBs when the virtual BWP is active for the UE associated with the user.
12 . The non-transitory computer-readable storage medium of claim 11 , wherein the operations further comprise:
enabling selection of how many PRBs will comprise the virtual BWP, wherein a particular number of PRBs that will comprise the virtual BWP is selectable from one PRB to 24 PRBs.