Method, system, and apparatus for notifying and determining antenna port position relationship

• US 9,379,827 B2
• Filed: 08/29/2013
• Issued: 06/28/2016
• Est. Priority Date: 09/26/2012
• Status: Active Grant

• Current Assignee: Guangdong OPPO Mobile Telecommunications Corporation Limited
• Original Assignee: ZTE Corporation
• Inventors: Sun, Yunfeng, Guo, Senbao, Li, Yu Ngok, Chen, Yijian
• Primary Examiner(s): Orgad, Edan
• Assistant Examiner(s): Latorre, Ivan O
• Application Number:
  US14/431,505
• Publication Number:
  US 20150236801A1
• Time in Patent Office: 1,034 Days
• Field of Search: 370/328, 370/329, 370/312, 370/252, 370/330, 370/241, 370/336, 375/340, 375/259, 455/450, 455/101, 455/103
• US Class Current: 1/1
• CPC Class Codes: H04B 17/27 for locating or positioning the transmitter
• 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: H04B 7/06 at the transmitting station
• CPC Class Codes: H04B 7/0626 Channel coefficients, e.g. channel state information [CSI]
• CPC Class Codes: H04B 7/0689 using different transmission schemes, at least one of them being a diversity transmission scheme
• CPC Class Codes: H04J 4/00 Combined time-division and frequency-division multiplex systems H04J13/00 takes precedence ; data transmission H04L5/26; telemetry G08C15/00
• CPC Class Codes: H04L 27/2613 Structure of the reference signals
• CPC Class Codes: H04L 5/0023 Time-frequency-space
• 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 5/005 of common pilots, i.e. pilots destined for multiple users or terminals
• CPC Class Codes: H04L 5/0051 of dedicated pilots, i.e. pilots destined for a single user or terminal
• CPC Class Codes: H04W 28/04 Error control

Abstract

A method, system and apparatus for notifying and determining an antenna port location relationship are disclosed. A network side configures an indication signaling of a CSI-RS referenced by a DMRS, and/or a first enabling indication signaling used for indicating whether the indication signaling of the CSI-RS referenced by the DMRS is enabled; or the network side further configures an indication signaling of a CRS referenced by each set of CSI-RSs which are quasi-co-located, and/or a second enabling indication signaling used for indicating whether the indication signaling of the CRS referenced by each set of CSI-RSs which are quasi-co-located is enabled. In the above scheme, a terminal is enabled to determine a reference signal port referenced in time-frequency synchronization, thereby providing a time-frequency synchronization precision.

Claims

1. A method for notifying an antenna port location relationship, comprising:

a network side configuring an indication signaling of a Channel State Information Reference Signal (CSI-RS) referenced by a Demodulation Reference Signal (DMRS), and a first enabling indication signaling used for indicating whether the indication signaling of the CSI-RS referenced by the DMRS is enabled,

the network side configuring a transmission mode indication signaling; and

further comprising;

the network side configuring an indication signaling of a Cell-specific Reference Signal (CRS) referenced by each set of CSI-RSs which are quasi-co-located, and a second enabling indication signaling used for indicating whether the indication signaling of the CRS referenced by each set of CSI-RSs which are quasi-co-located is enabled.

2. The method according to claim 1, wherein,

the network side configures the indication signaling of the CSI-RS referenced by the DMRS in any one of the following ways:

directly indicating an index of a CSI-RS that can be referenced by the DMRS in a CSI-RS resource set through a dynamic signaling or a high layer UE-specific semi-static signaling;

or,

based on a UE-specific CSI-RS resource set configured by the network side, selecting one or more CSI-RS resources from the CSI-RS resource set to serve as candidate referenced CSI-RSs, and configuring the candidate referenced CSI-RSs to a terminal through a UE-specific semi-static RRC signaling, and indicating which CSI-RS resource out of the candidate referenced CSI-RSs is referenced by a DMRS of a current frame through a dynamic signaling.

3. The method according to claim 2, wherein,

an indication signaling of whether the indication signaling of the CSI-RS referenced by the DMRS is enabled is represented with 1 bit, or is represented in a way of joint coding with the indication signaling of the CSI-RS referenced by the DMRS.

4. The method according to claim 1, wherein,

the network side configures the indication signaling of the CRS referenced by each set of CSI-RSs which are quasi-co-located in any one of the following ways:

the indication signaling of the CRS being implicitly represented with a cell ID corresponding to each set of CSI-RSs in a plurality sets of CSI-RSs configured by the network side, a CRS referenced by each set of CSI-RSs being a CRS that has a same cell ID with the CSI-RSs;

or,

the indication signaling of the CRS referenced by each set of CSI-RSs being explicitly represented with 9 bits or 10 bits.

5. A method for determining an antenna port location relationship, comprising:

a terminal receiving an indication signaling of a Channel State Information Reference Signal (CSI-RS) referenced by a Demodulation Reference Signal (DMRS) and/or a first enabling indication signaling used for indicating whether the indication signaling of the CSI-RS referenced by the DMRS is enabled configured by a network side, and determining a quasi-co-location relationship between different types of antenna ports, wherein the different types of antenna ports comprise antenna ports corresponding to CRS, DMRS and CSI-RS;

wherein the method further comprises;

according to an indication signaling of a CRS referenced by each set of CSI-RSs which are quasi-co-located and/or a second enabling indication signaling used for indicating whether the indication signaling of the CRS referenced by each set of CSI-RSs which are quasi-co-located is enabled configured by the network side, the terminal determining a quasi-co-location relationship between different types of antenna ports;

wherein, with regard to receiving of a Physical Downlink Shared Channel (PDSCH), the terminal determines the location relationship between the different types of antenna ports in the following way;

according to the received indication signaling of the CSI-RS referenced by the DMRS and the first enabling indication signaling, if the first enabling indication signaling indicates as enabled, the terminal determining that the quasi-co-location is satisfied between the DMRS port and the CSI-RS port;

if the first enabling indication signaling indicates as not enabled, or if the terminal does not receive the indication signaling of the CSI-RS referenced by the DMRS, the terminal determining that the quasi-co-location is satisfied between the DMRS port and the CRS port of the serving cell;

or, according to the received indication signaling of the CSI-RS referenced by the DMRS, the indication signaling of the CRS referenced by each set of CSI-RSs which are quasi-co-located, and the first enabling indication signaling or the second enabling indication signaling, if the first enabling indication signaling or the second enabling indication signaling indicates as enabled, the terminal determining that the quasi-co-location is satisfied between all the DMRS port, the CSI-RS port referenced by the DMRS and the CRS port referenced by the CSI-RS referenced by the DMRS;

if the first enabling indication signaling or the second enabling indication signaling indicates as not enabled, the terminal determining that the quasi-co-location is only satisfied between the DMRS port and the CSI-RS port referenced by the DMRS;

or, according to the received indication signaling of the CSI-RS referenced by the DMRS and the first enabling indication signaling, and the indication signaling of the CRS referenced by each set of CSI-RSs which are quasi-co-located and the second enabling indication signaling, if both the first enabling indication signaling and the second enabling indication signaling indicate as enabled, the terminal determining that the quasi-co-location is satisfied between all the DMRS port, the CSI-RS port referenced by the DMRS and the CRS port referenced by the CSI-RS referenced by the DMRS;

if the first enabling indication signaling indicates as enabled, and the second enabling indication signaling indicates as not enabled, the terminal determining that the quasi-co-location is satisfied between the DMRS port and the referenced CSI-RS port; and

if both the first enabling indication signaling and the second enabling indication signaling indicate as not enabled, the terminal determining that the quasi-co-location is satisfied between the DMRS port and the CRS port of the serving cell.

6. The method according to claim 5, further comprising:

the terminal receiving a transmission mode indication signaling configured by the network side;

when the transmission mode is mode 1 to mode 9, the terminal by default assumes that all the different types of antenna ports are quasi-co-located, and the terminal defaulting that the above signals are all from a serving cell; and

when the transmission mode is mode 10, according to the indication signaling of the CSI-RS referenced by the DMRS and/or the first enabling indication signaling, and the indication signaling of the CRS referenced by each set of CSI-RSs which are quasi-co-located and/or the second enabling indication signaling, the terminal determining the quasi-co-location relationship between the different types of antenna ports.

7. The method according to claim 5, wherein, with regard to a DMRS for enhanced Physical Downlink Control Channel (ePDCCH),

according to an indication signaling of a CSI-RS referenced by the ePDCCH DMRS and an enabling indication signaling of the indication signaling of the CSI-RS referenced by the ePDCCH DMRS configured by the network side, if the enabling indication signaling of the indication signaling of the CSI-RS referenced by the ePDCCH DMRS indicates as enabled, the terminal determining that the quasi-co-location is satisfied between an ePDCCH DMRS port and a referenced CSI-RS port;

if the enabling indication signaling of the indication signaling of the CSI-RS referenced by the ePDCCH DMRS indicates as not enabled, or if the terminal does not receive the indication signaling of the CSI-RS referenced by the ePDCCH DMRS, the terminal determining that the quasi-co-location is satisfied between the ePDCCH DMRS port and the CRS port of the serving cell,

wherein,

with regard to the ePDCCH DMRS, the referenced CSI-RS is determined in any one of the following ways;

defaulting as a first set of CSI-RSs in a plurality sets of PDSCH DMRS candidate referenced CSI-RSs configured by the network side;

independently configuring the CSI-RS referenced by the DMRS through a high layer signaling;

defaulting as a first set of CSI-RSs in a plurality sets of CSI-RSs configured by the network side for referencing;

configuring different CSI-RSs for different EPDCCH resource sets for referencing.

8. A system for notifying an antenna port location relationship, comprising a processor configured to execute a CSI-RS indication module, a transmission mode indication module and a CRS indication module, wherein:

the CSI-RS indication module is configured to configure an indication signaling of a Channel State Information Reference Signal (CSI-RS) referenced by a Demodulation Reference Signal (DMRS), and a first enabling indication signaling used for indicating whether the indication signaling of the CSI-RS referenced by the DMRS is enabled;

the transmission mode indication module is configured to configure a transmission mode indication signaling; and

the CRS indication module is configured to configure an indication signaling of a Cell-specific Reference Signal (CRS) referenced by each set of CSI-RSs which are quasi-co-located, and a second enabling indication signaling used for indicating whether the indication signaling of the CRS referenced by each set of CSI-RSs which are quasi-co-located is enabled.

9. The system according to claim 8, wherein,

the CSI-RS indication module is configured to configure the indication signaling of the CSI-RS referenced by the DMRS in any one of the following ways:

directly indicating an index of a CSI-RS that can be referenced by the DMRS in a CSI-RS resource set through a dynamic signaling or a high layer UE-specific semi-static signaling;

or, based on a UE-specific CSI-RS resource set configured by the network side, selecting one or more sets of CSI-RS resources from the CSI-RS resource set to serve as candidate referenced CSI-RSs, and configuring the candidate referenced CSI-RSs to a terminal through a UE-specific semi-static RRC signaling, and indicating which CSI-RS resource out of the candidate referenced CSI-RSs is referenced by a DMRS of a current frame through a dynamic signaling.

10. The system according to claim 8, wherein,

the CRS indication module is configured to configure the indication signaling of the CRS referenced by each set of CSI-RSs which are quasi-co-located in any one of the following ways:

the indication signaling of the CRS being implicitly represented with a cell ID corresponding to each set of CSI-RSs in a plurality sets of CSI-RSs configured by the network side, a CRS referenced by each set of CSI-RSs being a CRS that has a same cell ID with the CSI-RSs;

or, the indication signaling of the CRS referenced by each set of CSI-RSs being explicitly represented with 9 bits or 10 bits.

11. An apparatus for determining an antenna port location relationship, comprising a processor configured to execute a signaling receiving module and a location relationship determination module, wherein:

the signaling receiving module is configured to receive an indication signaling of a Channel State Information Reference Signal (CSI-RS) referenced by a Demodulation Reference Signal (DMRS) and/or a first enabling indication signaling used for indicating whether the indication signaling of the CSI-RS referenced by the DMRS is enabled configured by a network side;

the location relationship determination module is configured to determine a quasi-co-location relationship between different types of antenna ports, wherein the different types of antenna ports comprise antenna ports corresponding to CRS, DMRS and CSI-RS; and

wherein the signaling receiving module is further configured to receive an indication signaling of a CRS referenced by each set of CSI-RSs which are quasi-co-located and/or a second enabling indication signaling used for indicating whether the indication signaling of the CRS referenced by each set of CSI-RSs which are quasi-co-located is enabled configured by the network side; and

/or a transmission mode indication signaling configured by the network side;

wherein the location relationship determination module is further configured to, with regard to receiving of a Physical Downlink Shared Channel (PDSCH), determine the location relationship between the different types of antenna ports in the following way;

according to the indication signaling of the CSI-RS referenced by the DMRS and the first enabling indication signaling, if the first enabling indication signaling indicates as enabled, determining that the quasi-co-location is satisfied between the DMRS port and the CSI-RS port;

if the first enabling indication signaling indicates as not enabled, or if the indication signaling of the CSI-RS referenced by the DMRS is not received, determining that the quasi-co-location is satisfied between the DMRS port and a CRS port of the serving cell;

or, according to the received indication signaling of the CSI-RS referenced by the DMRS, the indication signaling of the CRS referenced by each set of CSI-RSs which are quasi-co-located, and the first enabling indication signaling or the second enabling indication signaling, if the first enabling indication signaling or the second enabling indication signaling indicates as enabled, determining that the quasi-co-location is satisfied between all the DMRS port, a CSI-RS port referenced by the DMRS and a CRS port referenced by the CSI-RS referenced by the DMRS;

if the first enabling indication signaling or the second enabling indication signaling indicates as not enabled, determining that the quasi-co-location is only satisfied between the DMRS port and the CSI-RS port referenced by the DMRS;

or, according to the received indication signaling of the CSI-RS referenced by the DMRS and the first enabling indication signaling, and the indication signaling of the CRS referenced by each set of CSI-RSs which are quasi-co-located and the second enabling indication signaling, if both the first enabling indication signaling and the second enabling indication signaling indicate as enabled, determining that the quasi-co-location is satisfied between all the DMRS port, the CSI-RS port referenced by the DMRS and the CRS port referenced by the CSI-RS referenced by the DMRS;

if the first enabling indication signaling indicates as enabled, and the second enabling indication signaling indicates as not enabled, determining that the quasi-co-location is satisfied between the DMRS port and the referenced CSI-RS port; and

if both the first enabling indication signaling and the second enabling indication signaling indicate as not enabled, determining that the quasi-co-location is satisfied between the DMRS port and the CRS port of the serving cell.

12. The apparatus according to claim 11, wherein,

the location relationship determination module is further configured to:

according to the transmission mode indication signaling, the indication signaling of the CSI-RS referenced by the DMRS and/or the first enabling indication signaling, and the indication signaling of the CRS referenced by each set of CSI-RSs which are quasi-co-located and/or the second enabling indication signaling, determine a quasi-co-location relationship between different types of antenna ports.

13. The apparatus according to claim 12, wherein,

the location relationship determination module is configured to:

when the transmission mode is mode 1 to mode 9, default that it is quasi-co-located between all the different types of antenna ports, and default that the above signals are all from a serving cell; and

when the transmission mode is mode 10, according to the indication signaling of the CSI-RS referenced by the DMRS and/or the first enabling indication signaling, and the indication signaling of the CRS referenced by each set of CSI-RSs which are quasi-co-located and/or the second enabling indication signaling, determine the quasi-co-location relationship between the different types of antenna ports.

14. The apparatus according to claim 12, wherein,

the signaling receiving module is further configured to:

receive an indication signaling of a CSI-RS referenced by an ePDCCH DMRS and an enabling indication signaling of the indication signaling of the CSI-RS referenced by the ePDCCH DMRS configured by the network side; and

the location relationship determination module is configured to;

if the enabling indication signaling of the indication signaling of the CSI-RS referenced by the ePDCCH DMRS indicates as enabled, determine that the quasi-co-location is satisfied between an ePDCCH DMRS port and a referenced CSI-RS port;

if the enabling indication signaling of the indication signaling of the CSI-RS referenced by the ePDCCH DMRS indicates as not enabled, or if the indication signaling of the CSI-RS referenced by the ePDCCH DMRS is not received, determine that the quasi-co-location is satisfied between the ePDCCH DMRS port and the CRS port of the serving cell,

wherein,

the location relationship determination module is configured to;

with regard to the ePDCCH DMRS, determine the referenced CSI-RS in any one of the following ways;

defaulting as a first set of CSI-RSs in a plurality sets of PDSCH DMRS candidate referenced CSI-RSs configured by the network side;

independently configuring the CSI-RS referenced by the DMRS through a high layer signaling;

defaulting as a first set of CSI-RSs in a plurality sets of CSI-RSs configured by the network side for referencing;

configuring different CSI-RSs to different EPDCCH resource sets for referencing.