METHOD AND APPARATUS FOR CONFIGURING AND TRANSMITTING PILOT

• US 20150146668A1
• Filed: 02/02/2015
• Published: 05/28/2015
• Est. Priority Date: 08/02/2012
• Status: Active Application

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: LIU, Kunpeng, LIU, Jianghua
• Granted Patent: US 10,256,951 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04L 27/2613 Structure of the reference signals
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/0035 Resource allocation in a cooperative multipoint environment
• CPC Class Codes: H04L 5/0051 of dedicated pilots, i.e. pilots destined for a single user or terminal
• CPC Class Codes: H04L 5/0069 Allocation based on distance or geographical location allocation based on terminal or device properties in general, H04W72/51

Abstract

Disclosed a method and an apparatus for configuring and transmitting a pilot, the method includes: a UE determines, according to a partitioned resource set, a parameter for generating an initial value of a demodulation pilot sequence; generates an initial value of the demodulation pilot sequence on the first resource set according to the first parameter, and generates an initial value on the second resource set according to the second parameter; and obtains the demodulation pilot sequence according to the initial value. In embodiments of the present invention, since parameters for calculating the initial value of the demodulation pilot sequence are respectively configured according to a pre-partitioned resource set, the initial value can be calculated according to the resource set to which the E-PDCCH belongs and the set parameter, thus obtaining the demodulation pilot sequence for demodulating the E-PDCCH, so as to improve demodulation performance of the E-PDCCH.

Claims

1. A method for configuring a pilot, comprising:

determining, by a user equipment (UE) and according to a resource set, a parameter for generating an initial value of a demodulation pilot sequence, wherein the resource set comprises a first resource set and a second resource set, and the parameter comprises a first parameter and a second parameter;

generating an initial value of a first demodulation pilot sequence on the first resource set according to the first parameter;

generating an initial value of a second demodulation pilot sequence on the second resource set according to the second parameter; and

obtaining the demodulation pilot sequence based on the initial value of the first demodulation pilot sequence and the initial value of the second demodulation pilot sequence.

2. The method according to claim 1, wherein:

the first resource set comprises a physical resource element set provided on a system bandwidth, and

the second resource set comprises a physical resource element set on the system bandwidth except the provided physical resource element set.

3. The method according to claim 2, wherein:

the physical resource element set included in the first resource set is a physical resource element set except the physical resource element set configured to the UE, and the physical resource element set included in the second resource set is a physical resource element set configured to the UE;

or

the physical resource element set included in the second resource set is other physical resource element set in the physical resource element set configured to the UE, except the physical resource element set included in the first resource set.

4. The method according to claim 1, wherein:

the first resource set comprises a physical resource element set transmitted in a discrete transmission mode, and the second resource set comprises a physical resource element set transmitted in a centralized transmission mode;

or

the first resource set comprises a physical resource element set in beamforming transmission, and the second resource set comprises a physical resource element set in diversity transmission;

or

the first resource set comprises a physical resource element set corresponding to a common search space, and the second resource set comprises a physical resource element set corresponding to a user-dedicated search space;

or

the first resource set comprises a physical resource element set corresponding to transmitting a first downlink control information format (DCI format) set, and the second resource set comprises a physical resource element set corresponding to transmitting a second DCI format set;

or

the first resource set comprises a physical resource element set for transmitting common control signaling, and the second resource set comprises a physical resource element set for transmitting a user equipment (UE) dedicated control signaling set;

or

the first resource set comprises a physical resource element set corresponding to control signaling which is CRC-masked according to at least one of a system information-radio network temporary identifier (SI-RNTI), a paging-radio network temporary identifier (P-RNTI), a temporary RNTI, a random access-radio network temporary identifier (RA-RNTI), a semi persistent-radio network temporary identifier (SPS-RNTI) and a transmit power control-radio network temporary identifier (TPC-RNTI), and the second resource set comprises a physical resource element set corresponding to control signaling which is CRC-masked according to a cell-radio network temporary identifier (C-RNTI);

or

the first resource set comprises a physical resource element set corresponding to a first pilot port set, and the second resource set comprises a physical resource element set corresponding to a second pilot port set.

5. The method according to claim 2, wherein the physical resource element set comprises:

at least one enhanced resource element group (eREG), or

a resource element set corresponding to at least one enhanced control channel element (eCCE), or

at least one physical resource block (PRB), or

at least one physical resource block pair (PRB pair).

6. The method according to claim 4, wherein the physical resource element set comprises:

at least one enhanced resource element group (eREG), or

a resource element set corresponding to at least one enhanced control channel element (eCCE), or

at least one physical resource block (PRB), or

at least one physical resource block pair (PRB pair).

7. The method according to claim 1, wherein:

the first parameter comprises a scrambling code ID which is set to 0 or 1, and an initial ID of the first demodulation pilot sequence which is set to a cell ID of a cell where the UE is located;

the second parameter comprises;

a scrambling code ID configured by a network side, and an initial ID of the second demodulation pilot sequence configured by the network side;

or a scrambling code ID which is set to 0 or 1, and an initial ID of the second demodulation pilot sequence configured by the network side;

or

a scrambling code ID configured by the network side, and an initial ID of the second demodulation pilot sequence which is set to the cell ID of the cell where the UE is located.

8. The method according to claim 7, wherein:

the scrambling code ID configured by the network side comprises;

a scrambling code ID configured by the network side for a physical downlink shared channel (PDSCH);

or

a scrambling code ID configured by the network side for an enhanced physical downlink control channel (E-PDCCH);

the initial ID of the second demodulation pilot sequence configured by the network side comprises;

an initial ID of the demodulation pilot sequence configured by the network side for the PDSCH;

or

an initial ID of the demodulation pilot sequence configured by the network side for the E-PDCCH.

9. The method according to claim 1, wherein the resource set comprises a transmission resource for transmitting an E-PDCCH, and the demodulation pilot sequence is a pilot sequence for demodulating the E-PDCCH.

10. A method for transmitting a pilot, comprising:

determining, by a base station and according to a resource set, a parameter for generating an initial value of a demodulation pilot sequence, wherein the resource set comprises a first resource set and a second resource set, and the parameter comprises a first parameter and a second parameter;

generating an initial value of a first demodulation pilot sequence on the first resource set according to the first parameter;

generating an initial value of a second demodulation pilot sequence on the second resource set according to the second parameter;

obtaining the demodulation pilot sequence based on the initial value of the first demodulation pilot sequence and the initial value of the second demodulation pilot sequence; and

transmitting the demodulation pilot sequence on a time-frequency resource corresponding to the demodulation pilot sequence.

11. The method according to claim 10, wherein:

the first resource set comprises a physical resource element set provided on a system bandwidth, and the second resource set comprises a physical resource element set on the system bandwidth except the provided physical resource element set;

or

the first resource set comprises a physical resource element set transmitted in a discrete transmission mode, and the second resource set comprises a physical resource element set transmitted in a centralized transmission mode;

or

the first resource set comprises a physical resource element set in beamforming transmission, and the second resource set comprises a physical resource element set in diversity transmission;

or

the first resource set comprises a physical resource element set corresponding to a common search space, and the second resource set comprises a physical resource element set corresponding to a user-dedicated search space;

or

the first resource set comprises a physical resource element set corresponding to transmitting a first downlink control information format (DCI format) set, and the second resource set comprises a physical resource element set corresponding to transmitting a second DCI format set;

or

the first resource set comprises a physical resource element set for transmitting common control signaling, and the second resource set comprises a physical resource element set for transmitting a user equipment (UE) dedicated control signaling set;

or

the first resource set comprises a physical resource element set corresponding to control signaling which is CRC-masked according to at least one of a system information-radio network temporary identifier (SI-RNTI), a paging-radio network temporary identifier (P-RNTI), a temporary RNTI, a random access-radio network temporary identifier (RA-RNTI), a semi persistent-radio network temporary identifier (SPS-RNTI) and a transmit power control-radio network temporary identifier (TPC-RNTI), and the second resource set comprises a physical resource element set corresponding to control signaling CRC-masked according to a cell-radio network temporary identifier (C-RNTI);

or

the first resource set comprises a physical resource element set corresponding to a first pilot port set, and the second resource set comprises a physical resource element set corresponding to a second pilot port set.

12. The method according to claim 11, wherein the physical resource element set comprises:

at least one enhanced resource element group (eREG), or a resource element set corresponding to at least one enhanced control channel element (eCCE), or at least one physical resource block (PRB), or at least one physical resource block pair (PRB pair).

13. The method according to claim 10, wherein:

the first parameter comprises a scrambling code ID which is set to 0 or 1, and an initial ID of the first demodulation pilot sequence which is set to a cell ID of a cell where the UE is located; and

the second parameter comprises;

a scrambling code ID configured by a network side, and an initial ID of the second demodulation pilot sequence configured by the network side;

or a scrambling code ID which is set to 0 or 1, and an initial ID of the second demodulation pilot sequence configured by the network side;

or

a scrambling code ID configured by the network side, and an initial ID of the second demodulation pilot sequence which is set to the cell ID of the cell where the UE is located.

14. The method according to claim 13, wherein:

the scrambling code ID configured by the network side comprises;

a scrambling code ID configured by the network side for a physical downlink shared channel (PDSCH);

or

a scrambling code ID configured by the network side for an enhanced physical downlink control channel (E-PDCCH);

the initial ID of the second demodulation pilot sequence configured by the network side comprises;

an initial ID of the demodulation pilot sequence configured by the network side for the PDSCH;

or

an initial ID of the demodulation pilot sequence configured by the network side for the E-PDCCH.

15. An apparatus for configuring a pilot, comprising:

a determining unit, configured to determine, according to a resource set, a parameter for generating an initial value of a demodulation pilot sequence, wherein the resource set comprises a first resource set and a second resource set, and the parameter comprises a first parameter and a second parameter;

a generating unit, configured to generate an initial value of a first demodulation pilot sequence on the first resource set according to the first parameter, and generate an initial value of a second demodulation pilot sequence on the second resource set according to the second parameter; and

an obtaining unit, configured to obtain the demodulation pilot sequence based on the initial value of the first demodulation pilot sequence and the initial value of the second demodulation pilot sequence.

16. The apparatus according to claim 15, wherein:

the first resource set comprises a physical resource element set provided on a system bandwidth, and the second resource set comprises a physical resource element set on the system bandwidth except the provided physical resource element set;

or

the first resource set comprises a physical resource element set transmitted in a discrete transmission mode, and the second resource set comprises a physical resource element set transmitted in a centralized transmission mode;

or

the first resource set comprises a physical resource element set in beamforming transmission, and the second resource set comprises a physical resource element set in diversity transmission;

or

the first resource set comprises a physical resource element set corresponding to a common search space, and the second resource set comprises a physical resource element set corresponding to a user-dedicated search space;

or

the first resource set comprises a physical resource element set corresponding to transmitting a first downlink control information format (DCI format) set, and the second resource set comprises a physical resource element set corresponding to transmitting a second DCI format set;

or

the first resource set comprises a physical resource element set for transmitting common control signaling, and the second resource set comprises a physical resource element set for transmitting a user equipment (UE) dedicated control signaling set;

or

the first resource set comprises a physical resource element set corresponding to control signaling which is CRC-masked according to at least one of a system information-radio network temporary identifier (SI-RNTI), a paging-radio network temporary identifier (P-RNTI), a temporary RNTI, a random access-radio network temporary identifier (RA-RNTI), a semi persistent-radio network temporary identifier (SPS-RNTI) and a transmit power control-radio network temporary identifier (TPC-RNTI), and the second resource set comprises a physical resource element set corresponding to control signaling CRC-masked according to a cell-radio network temporary identifier (C-RNTI);

or

the first resource set comprises a physical resource element set corresponding to a first pilot port set, and the second resource set comprises a physical resource element set corresponding to a second pilot port set.

17. The apparatus according to claim 15, wherein:

the first parameter determined by the determining unit comprises a scrambling code ID which is set to 0 or 1, and an initial ID of the first demodulation pilot sequence which is set to a cell ID of a cell where the UE is located; and

the second parameter determined by the determining unit comprises;

a scrambling code ID configured by a network side, and an initial ID of the second demodulation pilot sequence configured by the network side;

or

a scrambling code ID which is set to 0 or 1, and an initial ID of the second demodulation pilot sequence configured by the network side;

or a scrambling code ID configured by the network side, and an initial ID of the second demodulation pilot sequence which is set to the cell ID of the cell where the UE is located.

18. An apparatus for transmitting a pilot, comprising:

a determining unit, configured to determine, according to a resource set, a parameter for generating an initial value of a demodulation pilot sequence, wherein the resource set comprises a first resource set and a second resource set, and the parameter comprises a first parameter and a second parameter;

a generating unit, configured to generate an initial value of a first demodulation pilot sequence on the first resource set according to the first parameter, and generate an initial value of a second demodulation pilot sequence on the second resource set according to the second parameter;

an obtaining unit, configured to obtain the demodulation pilot sequence based on the initial value of the first demodulation pilot sequence and the initial value of the second demodulation pilot sequence; and

a transmitting unit, configured to transmit the demodulation pilot sequence on a time-frequency resource corresponding to the demodulation pilot sequence.

19. The apparatus according to claim 18, wherein:

the first resource set comprises a physical resource element set provided on a system bandwidth, and the second resource set comprises a physical resource element set on the system bandwidth except the provided physical resource element set;

or

the first resource set comprises a physical resource element set transmitted in a discrete transmission mode, and the second resource set comprises a physical resource element set transmitted in a centralized transmission mode;

or

the first resource set comprises a physical resource element set in beamforming transmission, and the second resource set comprises a physical resource element set in diversity transmission;

or

the first resource set comprises a physical resource element set corresponding to a common search space, and the second resource set comprises a physical resource element set corresponding to a user-dedicated search space;

or

the first resource set comprises a physical resource element set corresponding to transmitting a first downlink control information format (DCI format) set, and the second resource set comprises a physical resource element set corresponding to transmitting a second DCI format set;

or

the first resource set comprises a physical resource element set for transmitting common control signaling, and the second resource set comprises a physical resource element set for transmitting a user equipment (UE) dedicated control signaling set;

or

the first resource set comprises a physical resource element set corresponding to control signaling which is CRC-masked according to at least one of a system information-radio network temporary identifier (SI-RNTI), a paging-radio network temporary identifier (P-RNTI), a temporary RNTI, a random access-radio network temporary identifier (RA-RNTI), a semi persistent-radio network temporary identifier (SPS-RNTI) and a transmit power control-radio network temporary identifier (TPC-RNTI), and the second resource set comprises a physical resource element set corresponding to control signaling which is CRC-masked according to a cell-radio network temporary identifier (C-RNTI);

or

the first resource set comprises a physical resource element set corresponding to a first pilot port set, and the second resource set comprises a physical resource element set corresponding to a second pilot port set.

20. The apparatus according to claim 18, wherein:

the first parameter determined by the determining unit comprises a scrambling code ID which is set to 0 or 1, and an initial ID of the first demodulation pilot sequence which is set to a cell ID of a cell where the UE is located; and

the second parameter determined by the determining unit comprises;

a scrambling code ID configured by a network side, and an initial ID of the second demodulation pilot sequence configured by the network side;

or a scrambling code ID which is set to 0 or 1, and an initial ID of the second demodulation pilot sequence configured by the network side;

or

a scrambling code ID configured by the network side, and an initial ID of the second demodulation pilot sequence which is set to the cell ID of the cell where the UE is located.