US Pat. No. 10,560,239

REFERENCE SIGNAL MAPPING METHOD AND DEVICE

CHINA ACADEMY OF TELECOMU...

1. A reference signal mapping method, comprising:determining Resource Elements (REs) to which a Channel State Indication Reference Signal (CSI-RS) is mapped in accordance with an N-port reference signal pattern, N being an integer greater than 16, wherein RE positions to which an N-port CSI-RS in the N-port reference signal pattern is mapped are determined in accordance with RE positions to which a plurality of groups of M-port CSI-RSs in an M-port reference signal pattern are mapped, M being 4 or 8; and
performing resource mapping on the CSI-RS in accordance with the determined REs,
wherein N is 24 or 32, M is 4, the RE positions to which the N-port CSI-RS in the N-port reference signal pattern is mapped are the same as RE positions to which Q groups of 4-port CSI-RSs in a 4-port reference signal pattern are mapped, and each of the Q groups of 4-port CSI-RSs is multiplexed using four code words of a 4-bit Orthogonal Cover Code (OCC), where
orN is 18, 20, 24, 28 or 32, M is 8, the RE positions to which the N-port CSI-RS in the N-port reference signal pattern is mapped are the same as RE positions to which L groups of 8-port CSI-RSs in an 8-port reference signal pattern are mapped, where in the case that N is 18 or 24, L is 3, and in the case that N is 20, 28 or 32, L is 4.

US Pat. No. 10,798,686

FREQUENCY DOMAIN SPREADING AND DE-SPREADING METHOD AND APPARATUS

CHINA ACADEMY OF TELECOMU...

1. A method for frequency domain spreading and transmitting, the method comprising:obtaining, by a user equipment, indication information of an orthogonal sequence for transmitting a Physical Uplink Control Channel (PUCCH);
spreading, by the user equipment, uplink control information carried in the PUCCH in the frequency domain according to the orthogonal sequence corresponding to the indication information of the orthogonal sequence; and
transmitting, by the user equipment, the uplink control information after spreading, over frequency resources corresponding to the PUCCH;
wherein the spreading the uplink control information carried in the PUCCH in the frequency domain comprises:
for each data symbol in the PUCCH, multiplying the data symbol with the corresponding orthogonal sequence to obtain a spread data symbol, and mapping the spread data symbol onto a Resource Element (RE) group in an SC-FDMA symbol, wherein there are NSFPUCCH REs in the RE group, and NSFPUCCH represents a length of the orthogonal sequence.