Method and apparatus for transmitting data

Patent metadata

Field	Value
Publication number	US-9306652-B2
Application number	US-201414336747-A
Country	US
Kind code	B2
Filing date	Jul 21, 2014
Priority date	Jan 21, 2012
Publication date	Apr 5, 2016
Grant date	Apr 5, 2016

Abstract

Embodiments of the present invention disclose a method and an apparatus for transmitting data, and the method includes: first setting at least two second resource groups in each first resource group of at least one first resource group, and setting at least two reference signals in each of the second resource groups; then encoding data to be transmitted and generating two data streams from the encoded data; then, mapping the two data streams onto an available resource element of two different antenna ports, in which the reference signals corresponding to the two different antenna ports are set on two different second resource groups; and finally, transmitting, on the available resource element of the two different antenna ports, data on the two antenna ports. The present invention is applicable to the field of communications systems.

First claim

What is claimed is:

1. A method for transmitting data, wherein at least two second resource groups is comprised in each first resource group of at least one first resource group, wherein each of the second resource groups is capable of bearing at least two reference signals, and the at least two reference signals are corresponding to different antenna ports; wherein the first resource group comprises a physical resource block pair, and the second resource group comprises a resource element (RE);
wherein the method comprises:
encoding data to be transmitted and generating two data streams from the encoded data;
mapping the two data streams onto available resource elements (REs) of two different antenna ports, wherein the reference signals corresponding to the two different antenna ports are borne on two different second resource groups of the first resource group; and
transmitting, on the available REs of the two different antenna ports, data on the two antenna ports.

2. An apparatus for transmitting data, wherein at least two second resource groups are comprised in each first resource group of at least one first resource group, wherein each of the second resource groups is capable of bearing at least two reference signals, and the at least two reference signals are corresponding to different antenna ports;
wherein the apparatus comprises:
a processor, configured to encode data to be transmitted and generate two data streams from the encoded data;
the processor, configured to map the two data streams generated onto available resource elements (REs) of two different antenna ports, wherein the reference signals corresponding to the two different antenna ports are borne on two different second resource groups of the first resource group, wherein the two different second resource groups are orthogonal to each other in time and frequency, and each of the two different second resource groups comprises 12 REs; and
a transmitter, configured to transmit, on the available REs of the two different antenna ports, data mapped onto the two antenna ports.

3. A non-transitory computer-readable storage medium storing computer readable code comprising a program to implement the method according to claim 1 .

4. The method according to claim 1 , wherein the data is enhanced physical downlink control channel (E-PDCCH) data.

5. The method according to claim 1 , wherein the reference signals are demodulation reference signals (DMRS).

6. The method according to claim 1 , wherein the reference signals are user equipment (UE) specific reference signals.

7. The method according claim 1 , wherein the at least two reference signals borne on the same one of the second resource groups occupy the same time frequency resource and are distinguished by different sequences.

8. The apparatus according to claim 2 , wherein the available REs of the antenna ports comprise REs, in the first resource group, except an RE occupied by a physical downlink control channel (PDCCH) and a reference signal.

9. The apparatus according to claim 2 , wherein the data is enhanced physical downlink control channel (E-PDCCH) data.

10. The apparatus according to claim 2 , wherein the reference signals are demodulation reference signals (DMRS).

11. The apparatus according to claim 2 , wherein the reference signals are user equipment (UE) specific reference signals.

12. The apparatus according to claim 2 , wherein the at least two reference signals borne on the same one of the second resource groups occupy the same time frequency resource and are distinguished by different sequences.

13. A method for transmitting data, wherein at least two second resource groups is comprised in each first resource group of at least one first resource group, wherein each of the second resource groups is capable of bearing at least two reference signals, and the at least two reference signals are corresponding to different antenna ports;
wherein the method comprises:
encoding data to be transmitted and generating two data streams from the encoded data;
mapping the two data streams onto available resource elements (REs) of two different antenna ports, wherein the reference signals corresponding to the two different antenna ports are borne on two different second resource groups of the first resource group; and
transmitting, on the available REs of the two different antenna ports, data on the two antenna ports;
wherein the available REs of the antenna ports comprise REs, in the first resource group, except an RE occupied by a physical downlink control channel (PDCCH) and a reference signal.

14. A method for transmitting data, wherein at least two second resource groups is comprised in each first resource group of at least one first resource group, wherein each of the second resource groups is capable of bearing at least two reference signals, and the at least two reference signals are corresponding to different antenna ports;
wherein the method comprises:
encoding data to be transmitted and generating two data streams from the encoded data;
mapping the two data streams onto available resource elements (REs) of two different antenna ports, wherein the reference signals corresponding to the two different antenna ports are borne on two different second resource groups of the first resource group, wherein the two different second resource groups are orthogonal to each other in time and frequency, and each of the two different second resource groups comprises 12 REs; and
transmitting, on the available REs of the two different antenna ports, data on the two antenna ports.

15. A method for transmitting data, wherein at least two second resource groups is comprised in each first resource group of at least one first resource group, wherein each of the second resource groups is capable of bearing at least two reference signals, and the at least two reference signals are corresponding to different antenna ports;
wherein the method comprises:
encoding data to be transmitted and generating two data streams from the encoded data;
mapping the two data streams onto available resource elements (REs) of two different antenna ports, wherein the reference signals corresponding to the two different antenna ports are borne on two different second resource groups of the first resource group; and
transmitting, on the available REs of the two different antenna ports, data on the two antenna ports;

wherein a manner for the encoding is space frequency block coding or space time block coding.

16. A method for transmitting data, wherein at least two second resource groups is comprised in each first resource group of at least one first resource group, wherein each of the second resource groups is capable of bearing at least two reference signals, and the at least two reference signals are corresponding to different antenna ports;
wherein the method comprises:
encoding data to be transmitted and generating two data streams from the encoded data;
mapping the two data streams onto available resource elements (REs) of two different antenna ports, wherein the reference signals corresponding to the two different antenna ports are borne on two different second resource groups of the first resource group; and
transmitting, on the available REs of the two different antenna ports, data on the two antenna ports;
wherein when at least two remote radio frequency units are connected to a base station, and one of the at least two remote radio frequency units is configured to provide a service for a user equipment, the method further comprises:
allocating the different antenna ports correspondin

Assignees

• Huawei Tech Co Ltd

Inventors

• Liu Jianghua
• Wu Qiang
• Gao Chi

Classifications

• H04B7/0697 Primary

  using spatial multiplexing · CPC title

• H04L5/0051

  of dedicated pilots, i.e. pilots destined for a single user or terminal · CPC title

• H04B7/0684 Primary

  using different training sequences per antenna · CPC title

• H04L2025/03426

  transmission using multiple-input and multiple-output channels · CPC title

• H04L5/0048

  Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091) · CPC title