METHOD AND APPARATUS FOR DETERMINING PRECODING GRANULARITY

• US 20200136679A1
• Filed: 01/31/2018
• Published: 04/30/2020
• Est. Priority Date: 03/31/2017
• Status: Abandoned Application

• Current Assignee: Vivo Mobile Communication Co., Ltd. (Vivo Communication Technology Co. Ltd.)
• Original Assignee: Vivo Mobile Communication Co., Ltd. (Vivo Communication Technology Co. Ltd.)
• Inventors: SHEN, Xiaodong, SUN, Xiaodong, JI, Zichao, LU, Zhi, DING, Yu, WU, Kai
• Application Number:
  US16/494,288
• Publication Number:
  US 20200136679A1
• Time in Patent Office: Days
• CPC Class Codes: H04B 7/046 taking physical layer constraints into account
• CPC Class Codes: H04B 7/0617 for beam forming
• CPC Class Codes: H04L 25/0202 Channel estimation
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• 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

A method and an apparatus of determining a precoding granularity are provided in embodiments of this disclosure. The method includes: in the case that a receiving end device is configured with a combination of one or more of configuration criteria, the receiving end device determining that the precoding granularity is multiple PRBs

Claims

1. A method for determining a precoding granularity, comprising:

determining, by a receiving end device, multiple Physical Resource Blocks (PRBs) as the precoding granularity, in the case that the receiving end device is configured with a combination of one or more of configuration criteria.

2. The method according to claim 1, further comprising:

determining, by the receiving end device, that a same precoder is used within each Precoding Resource block Group (PRG).

3. The method according to claim 2, wherein in the case that the receiving end device is configured with a combination of one or more of the configuration criteria, a size of the PRG is predefined, or the size of the PRG is configured by network.

4. The method according to claim 1, wherein the configuration criteria comprise one or more of:

a system bandwidth;

a configured bandwidth of the receiving end device;

a Radio Frequency (RF) channel bandwidth of the receiving end device;

a size of scheduled PRBs;

an aggregation level of a control channel;

a mode of resource mapping;

a mode of resource mapping from Physical Downlink Control Channel (PDCCH) to Control Channel Element (CCE), only suitable for determining a PRG size of a control channel;

a mode of resource mapping from CCE to Resource Element Group (REG), only suitable for determining a PRG size of a control channel;

a mode of data mapping, only suitable for determining a PRG size of a data channel;

a Multiple-Input Multiple-Output (MIMO) transmission mode;

an Orthogonal Frequency Division Multiplexing (OFDM) waveform being used;

specific parameters of the OFDM waveform being used;

a signaling format of a control channel, only suitable for determining a PRG size of the control channel;

a quantity of symbols occupied by a control channel, only suitable for determining a PRG size of the control channel; and

a quantity of symbols occupied by a search space, only suitable for determining a PRG size of a control channel.

17. A receiving end device, comprising:

a first storage, a first processor and a computer program stored on the first storage and configured to be executed by the first processor, wherein the first processor is configured to execute the computer program, to implement steps of the method of determining the precoding granularity according to claim 1.

19. A computer-readable storage medium storing therein a computer program, wherein the computer program is configured to be executed by a processor, to implement steps of the method of determining the precoding granularity according to claim 1.

5. A method for determining a precoding granularity, comprising:

performing, by a transmitting end device, a precoding operation on signals transmitted to a receiving end device by using the precoding granularity corresponding to multiple Physical Resource Blocks (PRBs), in the case that the receiving end device is configured with a combination of one or more of configuration criteria.

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

determining, by the transmitting end device, that a same precoder is used within each Precoding Resource block Group (PRG) in the precoding on signals transmitted to the receiving end device.

7. The method according to claim 6, wherein in the case that the receiving end device is configured with a combination of one or more of the configuration criteria, a size of the PRG is predefined, or the size of the PRG is configured by network.

8. The method according to claim 5, wherein the configuration criteria comprise one or more of:

a system bandwidth;

a configured bandwidth of the receiving end device;

a Radio Frequency (RF) channel bandwidth of the receiving end device;

a size of scheduled PRBs;

an aggregation level of a control channel, only suitable for determining a PRG size of the control channel;

a mode of resource mapping;

a mode of resource mapping from Physical Downlink Control Channel (PDCCH) to Control Channel Element (CCE), only suitable for determining a PRG size of a control channel;

a mode of resource mapping from CCE to Resource Element Group (REG), only suitable for determining a PRG size of a control channel;

a mode of data mapping, only suitable for determining a PRG size of a data channel;

a Multiple-Input Multiple-Output (MIMO) transmission mode;

an Orthogonal Frequency Division Multiplexing (OFDM) waveform being used;

specific parameters of the OFDM waveform being used;

a signaling format of a control channel, only suitable for determining a PRG size of the control channel;

a quantity of symbols occupied by a control channel, only suitable for determining a PRG size of the control channel; and

a quantity of symbols occupied by a search space, only suitable for determining a PRG size of a control channel.

18. A transmitting end device, comprising:

a second storage, a second processor and a computer program stored on the second storage and configured to be executed by the second processor, wherein the second processor is configured to execute the computer program, to implement steps of the method of determining the precoding granularity according to claim 5.

20. A computer-readable storage medium storing therein a computer program, wherein the computer program is configured to be executed by a processor, to implement steps of the method of determining the precoding granularity according to claim 5.

9. A receiving end device for determining a precoding granularity, comprising:

a first processing module, configured to, in the case that the receiving end device is configured with a combination of one or more of configuration criteria, determine multiple Physical Resource Blocks (PRBs) as the precoding granularity.

10. The receiving end device according to claim 9, further comprising:

a second processing module, configured to determine that a same precoder is used within each Precoding Resource block Group (PRG).

11. The receiving end device according to claim 10, wherein in the case that the receiving end device is configured with a combination of one or more of the configuration criteria, a size of the PRG is predefined, or the size of the PRG is configured by network.

12. The receiving end device according to claim 9, wherein the configuration criteria comprise one or more of:

a system bandwidth;

a configured bandwidth of the receiving end device;

a Radio Frequency (RF) channel bandwidth of the receiving end device;

a size of scheduled PRBs;

an aggregation level of a control channel;

a mode of resource mapping;

a mode of resource mapping from Physical Downlink Control Channel (PDCCH) to Control Channel Element (CCE), only suitable for determining a PRG size of a control channel;

a mode of resource mapping from CCE to Resource Element Group (REG), only suitable for determining a PRG size of a control channel;

a mode of data mapping, only suitable for determining a PRG size of a data channel;

a Multiple-Input Multiple-Output (MIMO) transmission mode;

an Orthogonal Frequency Division Multiplexing (OFDM) waveform being used;

specific parameters of the OFDM waveform being used;

a signaling format of a control channel, only suitable for determining a PRG size of the control channel;

a quantity of symbols occupied by a control channel, only suitable for determining a PRG size of the control channel; and

a quantity of symbols occupied by a search space, only suitable for determining a PRG size of a control channel.

13. A transmitting end device for determining a precoding granularity, comprising:

a third processing module, configured to, in the case that a receiving end device is configured with a combination of one or more of configuration criteria, perform a precoding operation on signals transmitted to the receiving end device by using the precoding granularity corresponding to multiple Physical Resource Blocks (PRBs).

14. The transmitting end device according to claim 13, further comprising:

a fourth processing module, configured to determine that a same precoder is used within each Precoding Resource block Group (PRG) in the precoding on signals transmitted to the receiving end device.

15. The transmitting end device according to claim 14,

wherein in the case that the receiving end device is configured with a combination of one or more of the configuration criteria, a size of the PRG is predefined, or the size of the PRG is configured by network.

16. The transmitting end device according to claim 13, wherein the configuration criteria comprise one or more of:

a system bandwidth;

a configured bandwidth of the receiving end device;

a Radio Frequency (RF) channel bandwidth of the receiving end device;

a size of scheduled PRBs;

an aggregation level of a control channel, only suitable for determining a PRG size of the control channel;

a mode of resource mapping;

a mode of resource mapping from Physical Downlink Control Channel (PDCCH) to Control Channel Element (CCE), only suitable for determining a PRG size of a control channel;

a mode of resource mapping from CCE to Resource Element Group (REG), only suitable for determining a PRG size of a control channel;

a mode of data mapping, only suitable for determining a PRG size of a data channel;

a Multiple-Input Multiple-Output (MIMO) transmission mode;

an Orthogonal Frequency Division Multiplexing (OFDM) waveform being used;

specific parameters of the OFDM waveform being used;

a signaling format of a control channel, only suitable for determining a PRG size of the control channel;

a quantity of symbols occupied by a control channel, only suitable for determining a PRG size of the control channel; and

a quantity of symbols occupied by a search space, only suitable for determining a PRG size of a control channel.