Non-Orthogonal Multiple Access Transmission Method, Base Station, and UE

• US 20170331573A1
• Filed: 07/28/2017
• Published: 11/16/2017
• Est. Priority Date: 01/30/2015
• Status: Abandoned Application

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: Li, Yuanjie
• Application Number:
  US15/662,924
• Publication Number:
  US 20170331573A1
• Time in Patent Office: Days
• CPC Class Codes: H04J 1/04 Frequency-transposition arrangements modulation with carrier or side-band suppression H03C1/52, H03C1/60; single-band suppression H04B1/00, H04B15/00; telegraphic communication H04L27/02, H04L25/49; transference of modulation from one carrier to another, e.g. frequency- changing H03D7/00; demodulation or transference of modulation of modulated electromagnetic waves H03D9/00
• CPC Class Codes: H04J 1/06 Arrangements for supplying the carrier waves ; Arrangements for supplying synchronisation signals synchronisation in general H03B; frequency multiplication H03B19/00, H03B21/00; mixing H03D7/00, H03D9/00; carrier supply H04L5/10
• CPC Class Codes: H04J 11/0036 at the receiver
• CPC Class Codes: H04L 5/0037 Inter-user or inter-terminal allocation
• CPC Class Codes: H04L 5/0094 Indication of how sub-channels of the path are allocated
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

Embodiments of the present disclosure disclose a non-orthogonal multiple access transmission method, a base station, and UE. The method includes: configuring a new transmission mode for first UE, and notifying the first UE of the configured new transmission mode, where the new transmission mode indicates: a transmission signal of second UE located in a same cell as the first UE is superposed on a time-frequency resource allocated to the first UE, and the second UE is interfering UE of the first UE; and sending first downlink control signaling to the first UE, so that the first UE demodulates, according to the first downlink control signaling, received data sent by a base station, where the first downlink control signaling includes scheduling indication information of the first UE and scheduling indication information of the second UE.

Claims

1. A first user equipment (UE), comprising:

a processor; and

a receiver;

wherein the processor is configured to;

control the receiver to receive configuration information of a transmission mode, wherein the transmission mode indicates that a base station has superposed a transmission signal, of a second UE located in a same cell as the first UE, on a time-frequency resource allocated by the base station to the first UE, and the second UE is interfering UE of the first UE;

control, in the transmission mode, the receiver to receive downlink control signaling, wherein the downlink control signaling comprises scheduling indication information of the first UE and scheduling indication information of the second UE; and

demodulate, according to the downlink control signaling, received data from the base station.

2. The first UE according to claim 1, wherein in the transmission mode, when the first UE demodulates data using a user-specific reference signal, and the second UE demodulates data by using the user-specific reference signal, the scheduling indication information of the first UE in the downlink control signaling comprises a resource location indication, a modulation and coding scheme, a quantity of hybrid automatic repeat request processes, new data indicator information, redundancy version information, a ratio of energy per resource element (EPRE) of a pilot to EPRE of data of the first UE, a transport layer quantity, or antenna port information;

and

wherein the scheduling indication information of the second UE in the downlink control signaling comprises a radio network temporary identifier, a modulation and coding scheme, antenna port information, a ratio of the EPRE of the pilot to EPRE of data of the second UE, a ratio of the EPRE of the data of the first UE to EPRE of data of the second UE, data power information, or transport layer quantity information.

3. The first UE according to claim 1, wherein in the transmission mode, when the first UE demodulates data using a user-specific reference signal, and the second UE demodulates data by using a cell-specific reference signal, the scheduling indication information of the first UE in the downlink control signaling comprises:

a resource location indication, a modulation and coding scheme, rank information, a codebook matrix index, a quantity of hybrid automatic repeat request processes, new data indicator information, redundancy version information, a transport layer quantity, or antenna port information; and

wherein the scheduling indication information of the second UE in the downlink control signaling comprises a radio network temporary identifier, a modulation and coding scheme, a ratio PA of a data subcarrier power of an orthogonal frequency division multiplexing (OFDM) symbol without a pilot to a pilot subcarrier power, a ratio PB of a data subcarrier power of an OFDM symbol with a pilot to a pilot subcarrier power, or a transmission mode.

4. The first UE according to claim 1, wherein in the transmission mode, when the first UE demodulates data using a cell-specific reference signal, and the second UE demodulates data using the cell-specific reference signal, the scheduling indication information of the first UE in the downlink control signaling comprises a resource location indication, a modulation and coding scheme, rank information, a codebook matrix index, a quantity of hybrid automatic repeat request processes, new data indicator information, redundancy version information, or antenna port information;

and

wherein the scheduling indication information of the second UE in the downlink control signaling comprises a ratio PA of a data subcarrier power of an orthogonal frequency division multiplexing (OFDM) symbol without a pilot to a pilot subcarrier power, a ratio PB of a data subcarrier power of an OFDM symbol with a pilot to a pilot subcarrier power, a radio network temporary identifier, or a modulation and coding scheme.

5. The first UE according to claim 1, wherein in the transmission mode, when the first UE demodulates data using a cell-specific reference signal, and the second UE demodulates data using a user-specific reference signal, the scheduling indication information of the first UE in the downlink control signaling comprises a resource location indication, a modulation and coding scheme, rank information, a codebook matrix index, a quantity of hybrid automatic repeat request processes, new data indicator information, or redundancy version information;

and

wherein the scheduling indication information of the second UE in the downlink control signaling comprises a radio network temporary identifier, a transmission mode, a modulation and coding scheme, antenna port information, a transport layer quantity, a ratio of energy per resource element (EPRE) of data of the first UE to EPRE of data of the second UE, a ratio of EPRE of data of the first UE to EPRE of a dedicated pilot of the second UE, or dedicated pilot power information.

6. The first UE according to claim 1, wherein the scheduling indication information of the second UE in the downlink control signaling further comprises new data indicator information of the second UE, or redundancy version information of the second UE.

7. The first UE according to claim 1, wherein the scheduling indication information of the first UE in the downlink control signaling comprises a resource location indication, a modulation and coding scheme, a ratio of energy per resource element (EPRE) of a pilot to EPRE of data of the first UE, a ratio of EPRE of data of the first UE to EPRE of data of the second UE, antenna port information, a quantity of hybrid automatic repeat request processes, new data indicator information, or redundancy version information;

and

wherein the scheduling indication information of the second UE in the downlink control signaling comprises a resource location indication, a modulation and coding scheme, a ratio of the EPRE of the pilot to the EPRE of the data of the second UE, antenna port information, a quantity of hybrid automatic repeat request processes, new data indicator information, or redundancy version information.

8. A method, comprising:

receiving, by a first user equipment (UE), configuration information of a transmission mode from a base station, wherein the transmission mode indicates that the base station has superposed a transmission signal, of a second UE located in a same cell as the first UE, on a time-frequency resource allocated by the base station to the first UE, and the second UE is interfering UE of the first UE;

receiving, by the first UE in the transmission mode, downlink control signaling from the base station, wherein the downlink control signaling comprises scheduling indication information of the first UE and scheduling indication information of the second UE; and

demodulating, by the first UE according to the downlink control signaling, received data from the base station.

9. The method according to claim 8, wherein in the transmission mode, when the first UE demodulates data using a user-specific reference signal, and the second UE demodulates data using the user-specific reference signal, the scheduling indication information of the first UE in the downlink control signaling comprises a resource location indication, a modulation and coding scheme, a quantity of hybrid automatic repeat request processes, new data indicator information, redundancy version information, a ratio of energy per resource element (EPRE) of a pilot to EPRE of data of the first UE, a transport layer quantity, or antenna port information;

and

wherein the scheduling indication information of the second UE in the downlink control signaling comprises a radio network temporary identifier, a modulation and coding scheme, antenna port information, a ratio of the EPRE of the pilot to EPRE of data of the second UE, a ratio of the EPRE of the data of the first UE to EPRE of data of the second UE, data power information, or transport layer quantity information.

10. The method according to claim 8, wherein in the transmission mode, when the first UE demodulates data using a user-specific reference signal, and the second UE demodulates data using a cell-specific reference signal, the scheduling indication information of the first UE in the downlink control signaling comprises a resource location indication, a modulation and coding scheme, rank information, a codebook matrix index, a quantity of hybrid automatic repeat request processes, new data indicator information, redundancy version information, a transport layer quantity, or antenna port information;

and

wherein the scheduling indication information of the second UE in the downlink control signaling comprises a radio network temporary identifier, a modulation and coding scheme, a ratio PA of a data subcarrier power of an orthogonal frequency division multiplexing (OFDM) symbol without a pilot to a pilot subcarrier power, a ratio PB of a data subcarrier power of an OFDM symbol with a pilot to a pilot subcarrier power, or a transmission mode.

11. The method according to claim 8, wherein in the transmission mode, when the first UE demodulates data using a cell-specific reference signal, and the second UE demodulates data using the cell-specific reference signal, the scheduling indication information of the first UE in the downlink control signaling comprises a resource location indication, a modulation and coding scheme, rank information, a codebook matrix index, a quantity of hybrid automatic repeat request processes, new data indicator information, redundancy version information, or antenna port information;

and

wherein the scheduling indication information of the second UE in the downlink control signaling comprises a ratio PA of a data subcarrier power of an orthogonal frequency division multiplexing (OFDM) symbol without a pilot to a pilot subcarrier power, a ratio PB of a data subcarrier power of an OFDM symbol with a pilot to a pilot subcarrier power, a radio network temporary identifier, or a modulation and coding scheme.

12. The method according to claim 8, wherein in the transmission mode, when the first UE demodulates data using a cell-specific reference signal, and the second UE demodulates data using a user-specific reference signal, the scheduling indication information of the first UE in the downlink control signaling comprises a resource location indication, a modulation and coding scheme, rank information, a codebook matrix index, a quantity of hybrid automatic repeat request processes, new data indicator information, or redundancy version information;

and

wherein the scheduling indication information of the second UE in the downlink control signaling comprises a radio network temporary identifier, a transmission mode, a modulation and coding scheme, antenna port information, a transport layer quantity, a ratio of energy per resource element (EPRE) of data of the first UE to EPRE of data of the second UE, a ratio of EPRE of data of the first UE to EPRE of a dedicated pilot of the second UE, or dedicated pilot power information.

13. The method according to claim 8, wherein the scheduling indication information of the second UE in the downlink control signaling further comprises new data indicator information of the second UE, or redundancy version information of the second UE.

14. The method according to claim 8, wherein the scheduling indication information of the first UE in the downlink control signaling comprises a resource location indication, a modulation and coding scheme, a ratio of energy per resource element (EPRE) of a pilot to EPRE of data of the first UE, a ratio of EPRE of data of the first UE to EPRE of data of the second UE, antenna port information, a quantity of hybrid automatic repeat request processes, new data indicator information, or redundancy version information;

and

wherein the scheduling indication information of the second UE in the downlink control signaling comprises a resource location indication, a modulation and coding scheme, a ratio of the EPRE of the pilot to the EPRE of the data of the second UE, antenna port information, a quantity of hybrid automatic repeat request processes, new data indicator information, or redundancy version information.