PUCCH Resource Allocation and Peak to Average Power Ratio Reduction in eLAA
A method of physical uplink control channel (PUCCH) resource allocation to increase multiplexing capacity in enhanced licensed assisted access (eLAA) is proposed. New design of Physical Uplink Control Channel (PUCCH) is proposed. Across frequency domain of the channel bandwidth, multiple resource block repetitions are allocated for different UEs for uplink PUCCH transmission to satisfy the occupied channel bandwidth requirement for unlicensed carrier access. In addition, the resource elements of a single PUCCH resource block are partially spread into different repetitions to increase multiplexing capacity and to resource peak to average power ratio (PAPR).
1 . A method comprising:
receiving a signaling from a base station by a user equipment (UE) in an orthogonal frequency division multiplexing (OFDM) wireless communications network, wherein the signaling comprises information on a physical uplink control channel (PUCCH) resource, and wherein the PUCCH resource comprises a plurality of PUCCH physical resource blocks (PRBs) every M PRBs along frequency domain to occupy a predefined percentage of an entire channel bandwidth;
partitioning each PUCCH PRB into N PUCCH partitions, wherein each partition contains an equal number of resource elements (REs);
deriving the PUCCH resource by distributing one PUCCH partition over one PRB for every PUCCH PRB along frequency domain based on the signaling; and
transmitting a radio signal containing uplink control information over the derived PUCCH resource.
2 . The method of claim 1 , wherein the PUCCH has a format of occupying one PRB, wherein the N PUCCH partitions are distributed every M PRBs, and wherein each PUCCH partition is repeated every N*M PRBs.
3 . The method of claim 1 , wherein the PUCCH has format of occupying n consecutive PRBs partitioned into n*N PUCCH partitions, wherein the n*N PUCCH partitions are distributed every M PRBs.
4 . The method of claim 3 , wherein every n PUCCH partitions correspond to every n consecutive PRBs are distributed over n consecutive PRBs every M PRBs.
5 . The method of claim 3 , wherein an entire channel bandwidth is partitioned into n sections, and wherein each of the N PUCCH partitions correspond to one of the n consecutive PRBs are distributed over one PRB every M RPBs within one of the n sections.
6 . The method of claim 1 , wherein a co-phasing vector is applied to the set of resource blocks to reduce a peak to average power ratio (PAPR) of the radio signal.
7 . The method of claim 6 , wherein the co-phasing vector comprises a number of demodulation reference signal (DMRS) coefficients.
8 . A user equipment (UE) comprising:
a receiver that receives a signaling from a base station by a user equipment (UE) in an orthogonal frequency division multiplexing (OFDM) wireless communications network, wherein the physical signaling comprises information on a physical uplink control channel (PUCCH) resource, wherein the PUCCH resource comprises a plurality of PUCCH physical resource blocks (PRBs) every M PRBs along frequency domain to occupy a predefined percentage of an entire channel bandwidth;
a partitioning circuit that partitions each PUCCH PRB into N PUCCH partitions, wherein each partition contains an equal number of resource elements (REs);
a resource allocation circuit that derives the PUCCH resource by distributing one PUCCH partition over one PRB for every PUCCH PRB along frequency domain based on the signaling; and
a transmitter that transmits a radio signal containing uplink control information over the derived PUCCH resource.
9 . The UE of claim 8 , wherein the PUCCH has a format of occupying one PRB, wherein the N PUCCH partitions are distributed every M PRBs, and wherein each PUCCH partition is repeated every N*M PRBs.
10 . The UE of claim 8 , wherein the PUCCH has format of occupying n consecutive PRBs partitioned into n*N PUCCH partitions, wherein the n*N PUCCH partitions are distributed every M PRBs.
11 . The UE of claim 10 , wherein every n PUCCH partitions correspond to every n consecutive PRBs are distributed over n consecutive PRBs every M PRBs.
12 . The UE of claim 10 , wherein an entire channel bandwidth is partitioned into n sections, and wherein each of the N PUCCH partitions correspond to one of the n consecutive PRBs are distributed over one PRB every M RPBs within one of the n sections.
13 . The UE of claim 8 , wherein a co-phasing vector is applied to the set of resource blocks to reduce a peak to average power ratio (PAPR) of the radio signal.
14 . The UE of claim 13 , wherein the co-phasing vector comprises a number of demodulation reference signal (DMRS) coefficients.
15 . A method comprising:
allocating a physical uplink control channel (PUCCH) resource for a user equipment (UE) in an orthogonal frequency division multiplexing (OFDM) wireless communications network, wherein the PUCCH resource comprises a plurality of PUCCH physical resource blocks (PRBs) every M PRBs along frequency domain to occupy a predefined percentage of an entire channel bandwidth;
partitioning each PUCCH PRB into N PUCCH partitions, wherein each partition contains an equal number of resource elements (REs);
distributing one PUCCH partition over one PRB for every PUCCH PRB along frequency domain; and
transmitting a signaling containing the PUCCH PRB and the PUCCH partition information to the UE for uplink transmission.
16 . The method of claim 15 , wherein the PUCCH has a format of occupying one PRB, wherein the N PUCCH partitions are distributed every M PRBs, and wherein each PUCCH partition is repeated every N*M PRBs.
17 . The method of claim 15 , wherein the PUCCH has format of occupying n consecutive PRBs partitioned into n*N PUCCH partitions, wherein the n*N PUCCH partitions are distributed every M PRBs.
18 . The method of claim 17 , wherein every n PUCCH partitions correspond to every n consecutive PRBs are distributed over n consecutive PRBs every M PRBs.
19 . The method of claim 17 , wherein an entire channel bandwidth is partitioned into n sections, and wherein each of the N PUCCH partitions correspond to one of the n consecutive PRBs are distributed over one PRB every M RPBs within one of the n sections.
20 . The method of claim 15 , wherein a second set of resource blocks is allocated to a second UE, and wherein the first set of resource blocks and the second set of resource blocks occupy overlapping PUCCH PRBs.