Method and device for transmitting parameters and method and device for generating parameters

• US 9,900,873 B2
• Filed: 12/16/2011
• Issued: 02/20/2018
• Est. Priority Date: 08/05/2011
• Status: Active Grant

• Current Assignee: ZTE Corporation
• Original Assignee: ZTE Corporation
• Inventors: Chen, Yijian, Xu, Jun, Li, Yu Ngok, Dai, Bo, Zhang, Junfeng
• Primary Examiner(s): Jaroenchonwanit, Bunjob
• Application Number:
  US14/418,292
• Publication Number:
  US 20150208388A1
• Time in Patent Office: 2,258 Days
• Field of Search: None
• CPC Class Codes: H04B 7/024 Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
• CPC Class Codes: H04L 27/2613 Structure of the reference signals
• CPC Class Codes: H04L 5/0035 Resource allocation in a cooperative multipoint environment
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/0051 of dedicated pilots, i.e. pilots destined for a single user or terminal
• CPC Class Codes: H04L 5/0091 Signaling for the administration of the divided path
• CPC Class Codes: H04W 28/18 Negotiating wireless communication parameters
• CPC Class Codes: H04W 28/20 Negotiating bandwidth
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

Disclosed are a method and device for transmitting parameters and a method and device for generating parameters. The method for transmitting parameters comprises: a transmission node determines a first set of parameters for the transmission node to generate at least one user equipment specific reference signal; and the transmission node sends the first set of parameters to one or more transmission nodes adjacent to the transmission node. Through the disclosure, interference between user equipment specific reference signals of transmission nodes is reduced.

Claims

1. A method for transmitting parameters, comprising:

determining, by a transmission node, a first set of parameters, which comprises at least one antenna port number, the number of total layers, and a frequency index of a Physical Downlink Shared Channel (PDSCH) for downlink transmission, for the transmission node, wherein the first set of parameters is configured for generating at least one user equipment (UE) specific reference signal; and

sending, by the transmission node, the first set of parameters to one or more transmission nodes adjacent to the transmission node;

selecting, by the one or more transmission nodes, a second set of parameters, which comprises at least one antenna port number, the number of total layers, and a frequency index of a Physical Downlink Shared Channel (PDSCH) for downlink transmission, according to the first set of parameters, wherein a value corresponding to at least one of the second set of parameters is different from values corresponding to the first set of parameters;

generating, by the one or more transmission nodes, at least one UE specific reference signal corresponding to the one or more transmission nodes according to the second set of parameters.

2. The method according to claim 1, wherein the transmission node sends the first set of parameters to the one or more transmission nodes adjacent to the transmission node through an X2 interface.

3. The method according to claim 2, wherein the transmission node sends the first set of parameters to the one or more transmission nodes adjacent to the transmission node through at least one information element (IE) item on a LOAD INFORMATION message of the X2 interface.

4. The method according to claim 3, wherein determining, by a transmission node, a first set of parameters for the transmission node comprises:

determining the first set of parameters for the transmission node by the transmission node which comprises one of the following;

an evolved Node B (eNodeB), a macro cell, a relay station, a pico cell, a femtocell, a home eNodeB, a remote radio head (RRH), a radio remote unit (RRU) and a distributed antenna unit.

5. The method according to claim 2, wherein determining, by a transmission node, a first set of parameters for the transmission node comprises:

determining the first set of parameters for the transmission node by the transmission node which comprises one of the following;

an evolved Node B (eNodeB), a macro cell, a relay station, a pico cell, a femtocell, a home eNodeB, a remote radio head (RRH), a radio remote unit (RRU) and a distributed antenna unit.

6. The method according to claim 1, wherein determining, by a transmission node, a first set of parameters for the transmission node comprises:

determining the first set of parameters for the transmission node by the transmission node which comprises one of the following;

an evolved Node B (eNodeB), a macro cell, a relay station, a pico cell, a femtocell, a home eNodeB, a remote radio head (RRH), a radio remote unit (RRU) and a distributed antenna unit.

7. A method for generating parameters, comprising:

receiving, by a transmission node, a first set of parameters, which comprises at least one antenna port number, the number of total layers, and a frequency index of a Physical Downlink Shared Channel (PDSCH) for downlink transmission, wherein the first set of parameters is sent by one or more transmission nodes adjacent to the transmission node and is used for the one or more transmission nodes to generate user equipment (UE) specific reference signals;

selecting, by the transmission node, a second set of parameters, which comprises at least one antenna port number, the number of total layers, and a frequency index of a Physical Downlink Shared Channel (PDSCH) for downlink transmission, for generating at least one UE specific reference signal corresponding to the transmission node according to the first set of parameters; and

using, by the transmission node, the second set of parameters to generate the at least one UE specific reference signal corresponding to the transmission node;

wherein a value corresponding to at least one of the second set of parameters is different from values corresponding to the first set of parameters.

8. A device for transmitting parameters, wherein the device is applied to a transmission node and one or more transmission nodes, and comprise a hardware processor, configured to perform programming components stored in a memory, wherein the programming components comprise:

a determination component, applied to the transmission node, configured to determine a first set of parameters, which comprises at least one antenna port number, the number of total layers, and a frequency index of a Physical Downlink Shared Channel (PDSCH) for downlink transmission, for a transmission node where the determination component is located, wherein the first set of parameters are used for generating at least one user equipment (UE) specific reference signal; and

a sending component, applied to the transmission node, configured to send the first set of parameters to one or more transmission nodes adjacent to the transmission node;

a selecting component, applied to the one or more transmission nodes, configured to select a second set of parameters, which comprises at least one antenna port number, the number of total layers, and a frequency index of a Physical Downlink Shared Channel (PDSCH) for downlink transmission, according to the first set of parameters, wherein a value corresponding to at least one of the second set of parameters is different from values corresponding to the first set of parameters;

a generation component, applied to the one or more transmission nodes, configured to generate at least one UE specific reference signal corresponding to the one or more transmission nodes according to the second set of parameters.

9. The device according to claim 8, wherein the determination component, applied to the transmission node, configured to determine a first set of parameters for a transmission node comprises:

the determination component, applied to the transmission node which comprises one of the following;

an evolved Node B (eNodeB), a macro cell, a relay station, a pico cell, a femtocell, a home eNodeB, a remote radio head (RRH), a radio remote unit (RRU) and a distributed antenna unit, configured to determine a first set of parameters for a transmission node.

10. A device for generating parameters, wherein the device is applied to a transmission node and comprises a hardware processor, configured to perform programming components stored in a memory, wherein the programming components comprise:

a reception component configured to receive a first set of parameters, which comprises at least one antenna port number, the number of total layers, and a frequency index of a Physical Downlink Shared Channel (PDSCH) for downlink transmission, wherein the first set of parameters are sent by one or more transmission nodes adjacent to the transmission node and is used for the one or more transmission nodes to generate user equipment (UE) specific reference signals;

a selection component configured to select a second set of parameters, which comprises at least one antenna port number, the number of total layers, and a frequency index of a Physical Downlink Shared Channel (PDSCH) for downlink transmission, for generating at least one UE specific reference signal corresponding to the transmission node according to the first set of parameters; and

a generation component configured to generate the at least one UE specific reference signal corresponding to the transmission node according to the second set of parameters;

wherein a value corresponding to at least one of the second set of parameters is different from values corresponding to the first set of parameters.