Method and Device for Transmitting Parameters and Method and Device for Generating parameters

• US 20150208388A1
• Filed: 12/16/2011
• Published: 07/23/2015
• 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
• Granted Patent: US 9,900,873 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• 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:

a transmission node determining a first set of parameters for the transmission node, wherein the first set of parameters are used for generating at least one UE specific reference signal; and

the transmission node sending the first set of parameters to one or more transmission nodes adjacent to the transmission node.

2. The method according to claim 1, wherein the first set of parameters comprise at least one of the following:

at least one antenna port number, scrambling identity, the number of total layers, cell identity, the maximum downlink bandwidth, frequency index of a Physical Downlink Shared Channel (PDSCH) for downlink transmission, and at least one timeslot number in a radio frame for transmitting the at least one UE specific reference signal.

3. 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 X2 interface.

4. The method according to claim 3, 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 the LOAD INFORMATION message of the X2 interface.

5. The method according to claim 1, wherein the transmission node 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.

12. The method according to claim 2, wherein the transmission node 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.

13. The method according to claim 3, wherein the transmission node 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.

14. The method according to claim 4, wherein the transmission node 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. A method for generating parameters, comprising:

a transmission node receiving a first set of parameters, wherein the first set of parameters are sent by one or more transmission nodes adjacent to the transmission node and are used for the one or more transmission nodes to generate UE specific reference signals;

the transmission node selecting a second set of parameters for generating at least one UE specific reference signal corresponding to the transmission node according to the first set of parameters; and

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

7. The method according to claim 6, 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. The method according to claim 6, wherein the first set of parameters and the second set of parameters comprise at least one of the following:

at least one antenna port number, scrambling identity, the number of total layers, cell identity, the maximum downlink bandwidth, frequency index of a Physical Downlink Shared Channel (PDSCH) for downlink transmission, and at least one timeslot number in a radio frame for transmitting the UE specific reference signals.

15. The method according to claim 7, wherein the first set of parameters and the second set of parameters comprise at least one of the following:

at least one antenna port number, scrambling identity, the number of total layers, cell identity, the maximum downlink bandwidth, frequency index of a Physical Downlink Shared Channel (PDSCH) for downlink transmission, and at least one timeslot number in a radio frame for transmitting the UE specific reference signals.

9. A device for transmitting parameters, wherein the device is applied to a transmission node and comprising:

a determination component configured to determine parameters for a transmission node where the determination component is located, wherein the parameters are used for generating at least one UE specific reference signal; and

a sending component configured to send the parameters to one or more transmission nodes adjacent to the transmission node.

10. The device according to claim 9, wherein the transmission node 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 remote radio unit (RRU), a distributed antenna unit.

11. A device for generating parameters, wherein the device is applied to a transmission node and comprises:

a reception component configured to receive a first set of parameters, wherein the first set of parameters are sent by one or more transmission nodes adjacent to the transmission node and are used for the one or more transmission nodes to generate UE specific reference signals;

a selection component configured to select a second set of parameters for generating at least one UE specific reference signal corresponding to the transmission node where the selection component is located 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 where the generation component is located according to the second set of parameters.