Power configuration method and device

• US 10,588,099 B2
• Filed: 10/02/2018
• Issued: 03/10/2020
• Est. Priority Date: 04/08/2016
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: Wang, Ting, Ren, Haibao, Li, Yuanjie
• Primary Examiner(s): Nguyen, Hai V
• Application Number:
  US16/150,013
• Publication Number:
  US 20190037505A1
• Time in Patent Office: 525 Days
• Field of Search: 455522
• CPC Class Codes: H04B 7/0413 MIMO systems
• CPC Class Codes: H04B 7/0426 Power distribution
• CPC Class Codes: H04L 5/00 Arrangements affording multiple use of the transmission path
• 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 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04W 52/143 Downlink power control
• CPC Class Codes: H04W 52/42 in systems with time, space, frequency or polarisation diversity
• CPC Class Codes: H04W 72/044 based on the type of the allocated resource

Abstract

A power configuration method and a device, the power configuration method including sending, by a first network device, M power configuration parameters to a second network device, where the M power configuration parameters are corresponding to M antenna port sets, wherein at least one of the M antenna port sets belongs to the first network device, where each power configuration parameter is used to calculate power of a downlink data channel between a corresponding antenna port set and the second network device, and where M is an integer greater than or equal to 2.

Claims

1. A power configuration method, comprising:

receiving, by a terminal, M power configuration parameters from a network device, wherein the M power configuration parameters correspond to M antenna port sets, wherein at least one of the M antenna port sets belongs to the network device, wherein M is an integer greater than or equal to 2; and

demodulate, according to a calculated power of a downlink data channel, data transmitted to the terminal on the downlink data channel by an antenna port set of the M antenna port sets, wherein the calculated power of the downlink data channel is determined according to a respective power configuration parameter that is of the M power configuration parameters and that is associated with the antenna port set.

2. The method according to claim 1, wherein at least one power configuration parameter of the M power configuration parameters comprises reference signal power corresponding to the respective power configuration parameter, and wherein the respective power configuration parameter further comprises at least one of a first parameter and a second parameter, wherein the first parameter indicates a ratio of a power of a respective antenna port set of the at least one of the M antenna port sets corresponding to the power configuration parameter when a cell-specific reference signal exists on a symbol to a power of the respective antenna port set when no cell-specific reference signal exists on the symbol, and wherein the second parameter is a dedicated parameter associated with power of the downlink data channel sent on the respective antenna port set corresponding to the power configuration parameter.

3. The method according to claim 2, wherein each power configuration parameter of the M power configuration parameters further comprises identification information identifying the power configuration parameter;

and

wherein the method further comprises;

receiving, by the terminal, information from the network device that indicates a correspondence between identification information of the respective power configuration parameter and at least one of a quantity of data streams, an antenna port, and a codeword; and

determining, by the terminal, at least one antenna port set of the at least one of the M antenna port sets respectively corresponding to at least one of the M power configuration parameters according to at least one of the quantity of data streams, the antenna port, and the codeword of the respective antenna port set, and further according to the information used to indicate the correspondence between identification information of a power configuration parameter and at least one of the quantity of data streams, the antenna port, and the codeword.

4. The method according to claim 2, wherein each power configuration parameter of the M power configuration parameters further comprises identification information identifying the power configuration parameter;

and

wherein the method further comprises;

receiving, by the terminal, information from the network device that indicates a correspondence between a scrambling code sequence, and identification information of the respective power configuration parameter and at least one of a quantity of data streams, an antenna port, and a codeword; and

determining, by the terminal, at least one antenna port set of the at least one of the M antenna port sets respectively corresponding to at least one of the M power configuration parameters according on the scrambling code sequence and at least one of the quantity of data streams, the antenna port, and the codeword of the respective antenna port set of the at least one of the M antenna port sets, and according to the information used to indicate the correspondence between the scrambling code sequence, and identification information of the respective power configuration parameter and at least one of the quantity of data streams, the antenna port, and the codeword.

5. The method according to claim 1, wherein the receiving the M power configuration parameters from the network device comprises:

receiving, by the terminal, first signaling from the network device, wherein the first signaling carries the M power configuration parameters; and

wherein the method further comprises performing at least one of;

determining, by the terminal, according to a correspondence between each power configuration parameter and a respective antenna port set of the at least one of the M antenna port sets, at least one antenna port set of the at least one of the M antenna port sets respectively corresponding at least one of the M power configuration parameters;

or

determining, by the terminal according to a correspondence between each power configuration parameter and at least one of a quantity of data streams, an antenna port, and a codeword, at least one antenna port set of the at least one of the M antenna port sets respectively corresponding to each of the M power configuration parameters.

6. The method according to claim 1, wherein the receiving the M power configuration parameters from a network device, comprises:

receiving, by the terminal, first signaling from the network device, wherein the first signaling carries a first power configuration parameter and M−

1 pieces of conversion relationship information, wherein the first power configuration parameter is one of the M power configuration parameters, and wherein each piece of conversion relationship information of the M−

1 pieces of conversion relationship information comprises a conversion relationship between the first power configuration parameter and a power configuration parameter other than the first power configuration parameter in the M power configuration parameters; and

wherein the method further comprises;

determining, by the terminal, an antenna port set corresponding to the first power configuration parameter, and obtaining M−

1 power configuration parameters other than the first power configuration parameter in the M power configuration parameters according to the M−

1 pieces of conversion relationship information and the first power configuration parameter; and

performing at least one of;

determining, by the terminal, according to a correspondence between the first power configuration parameter, each of the M−

1 pieces of conversion relationship information, and the antenna port set, wherein at least one antenna port set of the at least one of the M antenna port sets respectively corresponds to at least one of the M power configuration parameters;

or

determining, by the terminal according to a correspondence between the first power configuration parameter, each of the M−

1 pieces of conversion relationship information, and at least one of a quantity of data streams, an antenna port, and a codeword, at least one antenna port set of the M antenna port sets respectively corresponding to at least one of the M power configuration parameters.

7. The method according to claim 6, wherein a second power configuration parameter is a power configuration parameter of the M power configuration parameters other than the first power configuration parameter;

and

wherein a first piece of conversion relationship information that is of the M−

1 pieces of conversion relationship information and that is about a conversion relationship between the second power configuration parameter and the first power configuration parameter and that is comprised in the M−

1 pieces of conversion relationship information comprises;

a ratio of a power of an antenna port set corresponding to the second power configuration parameter to a power of an antenna port set corresponding to the first power configuration parameter, and/or an offset between each parameter comprised in the second power configuration parameter and a corresponding parameter comprised in the first power configuration parameter.

8. The method according to claim 1, wherein the receiving, by a terminal, M power configuration parameters from a network device comprises:

receiving, by the terminal, first signaling and second signaling from the network device, wherein the first signaling carries a first power configuration parameter, wherein the second signaling carries M−

1 power configuration parameters other than the first power configuration parameter of the M power configuration parameters, and wherein the first power configuration parameter is a power configuration parameter of the M power configuration parameters; and

wherein the method further comprises performing at least one of;

determining, by the terminal, according to a correspondence between each of the M−

1 power configuration parameters and an antenna port set of the M antenna port sets, at least one antenna port set of the M antenna port sets respectively corresponding to at least one of the M−

1 power configuration parameters;

or

determining, by the terminal according to a correspondence between each of the M−

1 power configuration parameters and at least one of a quantity of data streams, an antenna port, and a codeword, at least one antenna port set of the M antenna port sets respectively corresponding to the M−

1 power configuration parameters.

9. The method according to claim 1, wherein the receiving the M power configuration parameters from a network device comprises:

receiving, by the terminal, first signaling and second signaling from the network device, wherein the first signaling carries a first power configuration parameter, the second signaling carries M−

1 pieces of conversion relationship information, wherein the first power configuration parameter is one of the M power configuration parameters, and wherein each piece of conversion relationship information comprises a conversion relationship between the first power configuration parameter and each of M−

1 power configuration parameters other than the first power configuration parameter in the M power configuration parameters; and

wherein the method further comprises;

determining, by the terminal, an antenna port set of the M antenna port sets corresponding to the first power configuration parameter, and obtaining the M−

1 power configuration parameters of the M power configuration parameters other than the first power configuration parameter in the M power configuration parameters according to the M−

1 pieces of conversion relationship information and the first power configuration parameter; and

performing at least one of

determining, by the terminal, according to a correspondence between each of the M−

1 pieces of conversion relationship information and an antenna port set, antenna port sets respectively corresponding to the M−

1 power configuration parameters;

or

determining, by the terminal according to a correspondence between each of the M−

1 pieces of conversion relationship information and at least one of a quantity of data streams, an antenna port, and a codeword, antenna port sets respectively corresponding to the M−

1 power configuration parameters.

10. A power configuration apparatus, comprising:

a processor; and

a non-transitory readable storage medium, wherein the non-transitory readable storage medium is configured to store a program to be executed by the processor, the program including instructions to;

send M power configuration parameters to a terminal, wherein the M power configuration parameters correspond to M antenna port sets, wherein a first power configuration parameter of the M power configuration parameters is sent using first signaling, and wherein at least one second power configuration parameter of the M power configuration parameters is sent using second signaling, wherein the first signaling is one of physical layer signaling or higher layer signaling, and wherein the second signaling is a different one of the physical layer signaling or higher layer signaling, wherein at least one of the M antenna port sets is associated with the apparatus, wherein each power configuration parameter indicates a power of a downlink data channel sent to the terminal on a corresponding antenna port set of the M antenna port sets, and wherein M is an integer greater than or equal to 2.

11. The apparatus according to claim 10, wherein at least one of the M power configuration parameters comprises reference signal power corresponding to the respective power configuration parameter, and further comprises at least one of a first parameter and a second parameter, wherein the first parameter indicates a ratio of a power of a respective antenna port set of the M antenna port sets corresponding to the respective power configuration parameter when a cell-specific reference signal exists on a symbol to a power of the respective antenna port set when no cell-specific reference signal exists on the symbol, and wherein the second parameter is a dedicated parameter indicating a power of the downlink data channel sent on the antenna port set corresponding to the respective power configuration parameter.

12. The apparatus according to claim 11, wherein each power configuration parameter of the M power configuration parameters further comprises identification information identifying the respective power configuration parameter;

and

wherein the program further includes instructions to perform at least one of;

send, to the terminal, information indicating a correspondence between identification information of a power configuration parameter and at least one of a quantity of data streams, an antenna port, and a codeword;

or

send, to the terminal, information indicating a correspondence between a scrambling code sequence, and identification information of a power configuration parameter of the M power configuration parameters and at least one of a quantity of data streams, an antenna port, and a codeword.

13. The apparatus according to claim 10, wherein the program further includes instructions to perform at least one of:

send the M power configuration parameters to the terminal using first signaling, wherein each power configuration parameter is in a correspondence with at least one of a respective antenna port set of the M antenna port sets, or with at least one of a quantity of data streams, an antenna port, and a codeword;

or

send a first power configuration parameter of the M power configuration parameters and M−

1 pieces of conversion relationship information to the terminal using first signaling, wherein the first power configuration parameter and each of the M−

1 pieces of conversion relationship information are in a correspondence with at least one of an antenna port set, or with at least one of a quantity of data streams, an antenna port, and a codeword, wherein each piece of conversion relationship information of the M−

1 pieces of conversion relationship information comprises a conversion relationship between the first power configuration parameter and a power configuration parameter of the M power configuration parameters other than the first power configuration parameter in the M power configuration parameters, and wherein the M−

1 pieces of conversion relationship information are associated with M−

1 power configuration parameters.

14. The apparatus according to claim 13, wherein a second power configuration parameter is a power configuration parameter other than the first power configuration parameter of the M power configuration parameters;

and

wherein a piece of conversion relationship information of the M−

1 pieces of conversion relationship information about a conversion relationship between the second power configuration parameter and the first power configuration parameter comprises at least one of;

a ratio of power of an antenna port set corresponding to the second power configuration parameter to power of an antenna port set corresponding to the first power configuration parameter;

or

an offset between each parameter of the second power configuration parameter and a corresponding parameter of the first power configuration parameter.

15. The apparatus according to claim 10, wherein the program further includes instructions to perform at least one of:

send a first power configuration parameter of the M power configuration parameters to the terminal using first signaling, and send M−

1 power configuration parameters of the M power configuration parameters other than the first power configuration parameter to the terminal using second signaling, wherein the first power configuration parameter is one of the M power configuration parameters, and each power configuration parameter is in a correspondence with an antenna port set, or each power configuration parameter is in a correspondence with at least one of a quantity of data streams, an antenna port, and a codeword;

or

send a first power configuration parameter of the of the M power configuration parameters to the terminal using first signaling, and send M−

1 pieces of conversion relationship information to the terminal using second signaling, wherein each piece of conversion relationship information of the M−

1 pieces of conversion relationship information comprises a conversion relationship between the first power configuration parameter and a power configuration parameter of the M power configuration parameters other than the first power configuration parameter in the M power configuration parameters, wherein each of the M−

1 pieces of conversion relationship information is in a correspondence with at least one of an antenna port set of the M antenna port sets, or with at least one of a quantity of data streams, an antenna port, and a codeword, and wherein the M−

1 pieces of conversion relationship information are associated with the M−

1 power configuration parameters.

16. A power configuration apparatus, comprising:

a processor; and

a non-transitory readable storage medium, wherein the non-transitory readable storage medium is configured to store a program to be executed by the processor, the program including instructions to;

receive M power configuration parameters from a network device, wherein the M power configuration parameters correspond to M antenna port sets, wherein at least one of the M antenna port sets belongs to the network device, and wherein M is an integer greater than or equal to 2; and

demodulate, according to a calculated power of a downlink data channel, data transmitted to the power configuration apparatus, on the downlink data channel by an antenna port set of the M antenna port sets, wherein the calculated power of the downlink data channel is determined according to a respective power configuration parameter that is of the M power configuration parameters and that is associated with the antenna port set.

17. The apparatus according to claim 16, wherein at least one of the M power configuration parameters comprises a reference signal power corresponding to the power configuration parameter, and further comprises at least one of a first parameter and a second parameter, wherein the first parameter indicates a ratio of a power of an antenna port set of the M antenna port sets corresponding to the power configuration parameter when a cell-specific reference signal exists on a symbol to a power of the antenna port set when no cell-specific reference signal exists on the symbol, and the second parameter is a dedicated parameter used to calculate power of a downlink data channel sent on the antenna port set corresponding to the power configuration parameter.

18. The apparatus according to claim 17, wherein each power configuration parameter further comprises identification information used to identify the power configuration parameter;

and

wherein the program further includes instructions to;

receive information from the network device and that is used to indicate a correspondence between identification information of a power configuration parameter and at least one of a quantity of data streams, an antenna port, and a codeword; and

determine, according to at least one of the quantity of data streams, the antenna port, and the codeword of the antenna port set, and further according to the information used to indicate the correspondence between identification information of a power configuration parameter and at least one of a quantity of data streams, an antenna port, and a codeword, the antenna port sets respectively corresponding to the M power configuration parameters.

19. The apparatus according to claim 17, wherein each power configuration parameter of the M power configuration parameters further comprises identification information used to identify the power configuration parameter;

and

wherein the program further includes instructions to;

receive information from the network device and that indicates a correspondence between a scrambling code sequence, and identification information of a power configuration parameter and a scrambling code sequence, and identification information of a power configuration parameter and at least one of a quantity of data streams, an antenna port, and a codeword; and

determine at least one antenna port set of the M antenna sets respectively corresponding to at least one power configuration parameter of the M power configuration parameters and according to a scrambling code sequence and at least one of the quantity of data streams, the antenna port, and the codeword of the respective antenna port set, and further according to the information indicating the correspondence between the scrambling code sequence, identification information of the power configuration parameter and at least one of the quantity of data streams, the antenna port, and the codeword.

20. The apparatus according to claim 16, wherein the program further includes instructions to:

receive first signaling from the network device, wherein the first signaling carries the M power configuration parameters; and

perform at least one of;

determine, according to a correspondence between each power configuration parameter of the M power configuration parameters and an antenna port set, at least one antenna port set of the M antenna port sets respectively corresponding to at least one power configuration parameter of the M power configuration parameters;

or

determine, according to a correspondence between each power configuration parameter and at least one of a quantity of data streams, an antenna port, and a codeword, the antenna port sets respectively corresponding to the M power configuration parameters.