Frame structure design for new carrier type (NCT)
First Claim
1. A user equipment (UE) to receive a synchronization signal in a downlink signal in a wireless network, comprising:
- at least one antenna capable of receiving a new carrier type (NCT) downlink signal comprising demodulation reference signals (DMRS) in at least one subframe of the NCT downlink signal, the demodulation reference signals comprising a first DMRS pattern for a first plurality of physical resource blocks (PRBs) of the at least one subframe and a second DMRS pattern for a second plurality of PRBs of the at least one subframe, the second plurality of PRBs comprising a predetermined number of PRBs adjacent to a center frequency of the at least one subframe;
wherein the first DMRS pattern is applied to PRBs that do not have an overlap between a demodulation reference signal and a synchronization signal, and the second DMRS pattern is applied to PRBs that have an overlap between a demodulation reference signal and a synchronization signal; and
a receiver coupled to the at least one antenna, the receiver being capable of demodulating the demodulation reference signals in the NCT downlink signal;
wherein at least one PRB of the PRBs adjacent to the center frequency of the at least one subframe comprises OFDM symbols respectively identified as OFDM symbols 0-13, and wherein the demodulation reference signal pattern comprises OFDM symbols 2-3 and 12-13 of the PRB.
2 Assignments
0 Petitions
Accused Products
Abstract
A system and method utilizes a selected PRB configuration for a new carrier type for a 3GPP-type wireless network. A downlink signal is received that comprises a demodulation reference signal pattern in at least one predetermined subframe of the downlink signal. The subframe comprises a first predetermined number of the plurality of orthogonal frequency division multiplex (OFDM) symbols comprising synchronization signals for a legacy version of the downlink signal and the demodulation reference signal pattern comprising a second predetermined number of OFDM symbols that are different from the first predetermined number of the plurality of OFDM symbols. After receiving the downlink signal, the demodulation reference signal pattern in the downlink signal is demodulated.
-
Citations
28 Claims
-
1. A user equipment (UE) to receive a synchronization signal in a downlink signal in a wireless network, comprising:
-
at least one antenna capable of receiving a new carrier type (NCT) downlink signal comprising demodulation reference signals (DMRS) in at least one subframe of the NCT downlink signal, the demodulation reference signals comprising a first DMRS pattern for a first plurality of physical resource blocks (PRBs) of the at least one subframe and a second DMRS pattern for a second plurality of PRBs of the at least one subframe, the second plurality of PRBs comprising a predetermined number of PRBs adjacent to a center frequency of the at least one subframe; wherein the first DMRS pattern is applied to PRBs that do not have an overlap between a demodulation reference signal and a synchronization signal, and the second DMRS pattern is applied to PRBs that have an overlap between a demodulation reference signal and a synchronization signal; and a receiver coupled to the at least one antenna, the receiver being capable of demodulating the demodulation reference signals in the NCT downlink signal; wherein at least one PRB of the PRBs adjacent to the center frequency of the at least one subframe comprises OFDM symbols respectively identified as OFDM symbols 0-13, and wherein the demodulation reference signal pattern comprises OFDM symbols 2-3 and 12-13 of the PRB. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A method of receiving a synchronization signal in a downlink signal, the method comprising:
-
receiving a new carrier type (NCT) downlink signal comprising demodulation reference signals (DMRS) and synchronization signals in at least one predetermined subframe of the downlink signal, the demodulation reference signals comprising a first DMRS pattern for a first plurality of physical resource blocks (PRBs) of the at least one subframe and a second DMRS pattern for a second plurality of PRBs of the at least one subframe; wherein the first DMRS pattern is applied to PRBs that do not have an overlap between a demodulation reference signal and a synchronization signal, and the second DMRS pattern is applied to PRBs that have an overlap between a demodulation reference signal and a synchronization signal; and demodulating the demodulation reference signals in the downlink signal; wherein at least one PRB of the PRBs adjacent to the center frequency of the at least one subframe comprises OFDM symbols respectively identified as OFDM symbols 0-13, and wherein the demodulation reference signal pattern comprises OFDM symbols 2-3 and 12-13 of the PRB. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
-
-
24. An article comprising:
- a non-transitory computer-readable medium having stored thereon instructions that, if executed, result in at least the following;
receiving demodulation reference signals (DMRS) in at least one predetermined subframe of a downlink signal of a wireless network, the demodulation reference signals comprising a first DMRS pattern for a first plurality of physical resource blocks (PRBs) of the at least one subframe and a second DMRS pattern for a second plurality of PRBs of the at least one subframe, the second plurality of PRBs comprising a predetermined number of PRBs adjacent to a center frequency of the at least one subframe, wherein the first DMRS pattern is applied to PRBs that do not have an overlap between a demodulation reference signal and a synchronization signal, and the second DMRS pattern is applied to PRBs that have an overlap between a demodulation reference signal and a synchronization signal, and demodulating the demodulation reference signals in the downlink signal; wherein at least one PRB of the PRBs adjacent to the center frequency of the at least one subframe comprises OFDM symbols respectively identified as OFDM symbols 0-13, and wherein the demodulation reference signal pattern comprises OFDM symbols 2-3 and 12-13 of the PRB. - View Dependent Claims (25, 26, 27, 28)
- a non-transitory computer-readable medium having stored thereon instructions that, if executed, result in at least the following;
Specification