Transmission mode selecting method, antenna transmission/reception combination determining method, device and system

• US 9,516,545 B2
• Filed: 11/12/2014
• Issued: 12/06/2016
• Est. Priority Date: 06/27/2012
• 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: Cheng, Hong, Wang, Rui, Du, Yinggang, Rong, Lu
• Primary Examiner(s): PATEL, CHANDRAHAS B
• Application Number:
  US14/539,718
• Publication Number:
  US 20150071062A1
• Time in Patent Office: 755 Days
• US Class Current: 1/1
• CPC Class Codes: H04B 7/0689 using different transmission schemes, at least one of them being a diversity transmission scheme
• CPC Class Codes: H04B 7/0691 using subgroups of transmit antennas
• CPC Class Codes: H04B 7/0871 using different reception schemes, at least one of them being a diversity reception scheme
• CPC Class Codes: H04B 7/0874 using subgroups of receive antennas
• CPC Class Codes: H04L 1/0001 Systems modifying transmission characteristics according to link quality, e.g. power backoff adaptive data allocation for multicarrier modulation H04L5/0044; controlling transmission power for radio systems H04W52/04
• CPC Class Codes: H04L 5/14 Two-way operation using the same type of signal, i.e. duplex
• CPC Class Codes: H04L 5/16 Half-duplex systems; Simplex/duplex switching; Transmission of break signals non-automatically inverting the direction of transmission
• CPC Class Codes: H04W 28/0289 Congestion control load shedding arrangements in network planning H04W16/08; performing reselection for handling the traffic H04W36/22; wireless traffic scheduling H04W72/12
• CPC Class Codes: H04W 52/42 in systems with time, space, frequency or polarisation diversity
• CPC Class Codes: H04W 52/44 in connection with interruption of transmission
• CPC Class Codes: H04W 52/50 at the moment of starting communication in a multiple access environment

Abstract

Embodiments of the present invention disclose a transmission mode selecting method, an antenna TX/RX combination determining method, device, and system. The transmission mode selecting method includes: obtaining a first system capacity in a half-duplex transmission mode; obtaining a second system capacity in a full-duplex transmission mode, where the second system capacity is the maximum value among system capacities of a universal set of candidate antenna TX/RX combinations in the full-duplex transmission mode, or the maximum value among system capacities of a first subset of the candidate antenna TX/RX combinations in the full-duplex transmission mode, or a system capacity exceeding a system capacity threshold; and selecting a target transmission mode according to a comparison result between the first system capacity and the second system capacity, where the target transmission mode is a transmission mode corresponding to a larger value between the first system capacity and the second system capacity.

Claims

1. A transmission mode selecting method in a radio communications system, the radio communications system comprising a first communications equipment and a second communications equipment, the first communications equipment comprising M antennas, the second communications equipment comprising N antennas, the method comprising:

obtaining a first system capacity in a half-duplex transmission mode;

obtaining a second system capacity in a full-duplex transmission mode, wherein the second system capacity is the maximum value among system capacities of a universal set of candidate antenna TX/RX combinations in the full-duplex transmission mode, or the maximum value among system capacities of a first subset of the candidate antenna TX/RX combinations in the full-duplex transmission mode, or a system capacity exceeding a system capacity threshold;

selecting a target transmission mode according to a comparison result between the first system capacity and the second system capacity, wherein the target transmission mode is a transmission mode corresponding to a larger value between the first system capacity and the second system capacity; and

when the target transmission mode is the full-duplex transmission mode;

performing full-duplex data transmission in accordance with an antenna TX/RX combination corresponding to the second system capacity, wherein the antenna TX/RX combination corresponding to the second system capacity refers to a transmission mode of each antenna among the M antennas of the first communications equipment and a transmission mode of each antenna among the N antennas of the second communications equipment when the full-duplex transmission mode is used for transmission, and the transmission mode of the antenna is receiving signals or transmitting signals.

2. The method according to claim 1, wherein selecting a target transmission mode according to a comparison result between the first system capacity and the second system capacity, wherein the target transmission mode is a transmission mode corresponding to a larger value between the first system capacity and the second system capacity comprises:

when the second system capacity is greater than the first system capacity, selecting the full-duplex transmission mode; and

when the second system capacity is smaller than the first system capacity, selecting the half-duplex transmission mode.

3. The method according to claim 1, wherein the system capacity threshold is the first system capacity, or the system capacity threshold is the sum of the first system capacity and an adjustment value, or the system capacity threshold is an average system capacity or the highest system capacity in a full-duplex transmission mode in a history statistical period, or the system capacity threshold is an average system capacity or the highest system capacity in a half-duplex transmission mode in the history statistical period.

4. A transmission mode selecting method in a radio communications system, the radio communications system comprising a first communications equipment and a second communications equipment, the first communications equipment comprising M antennas, the second communications equipment comprising N antennas, the method comprising:

obtaining a first system transmit power in a half-duplex transmission mode;

obtaining a second system transmit power in a full-duplex transmission mode, wherein the second system transmit power is the minimum value among system transmit powers of a universal set of candidate antenna TX/RX combinations in the full-duplex transmission mode, or the minimum value among system transmit powers of a second subset of the candidate antenna TX/RX combinations in the full-duplex transmission mode, or a system transmit power smaller than a system transmit power threshold;

selecting a target transmission mode according to a comparison result between the first system transmit power and the second system transmit power, wherein the target transmission mode is a transmission mode corresponding to a smaller value between the first system transmit power and the second system transmit power; and

when the target transmission mode is the full-duplex transmission mode;

performing full-duplex data transmission in accordance with an antenna TX/RX combination corresponding to the second system transmit power, wherein the antenna TX/RX combination corresponding to the second system transmit power refers to a transmission mode of each antenna among the M antennas of the first communications equipment and a transmission mode of each antenna among the N antennas of the second communications equipment when the full-duplex transmission mode is used for transmission, and the transmission mode of the antenna is receiving signals or transmitting signals.

5. The method according to claim 4, wherein selecting a target transmission mode according to a comparison result between the first system transmit power and the second system transmit power, wherein the target transmission mode is a transmission mode corresponding to a smaller value between the first system transmit power and the second system transmit power comprises:

when the second system transmit power is smaller than the first system transmit power, selecting the full-duplex transmission mode; and

when the second system transmit power is greater than the first system transmit power, selecting the half-duplex transmission mode.

6. The method according to claim 4, wherein the system transmit power threshold is the first system transmit power, or the system transmit power threshold is the difference between the first system transmit power and an adjustment value, or the system transmit power threshold is an average system transmit power or the lowest system transmit power in a full-duplex transmission mode in a history statistical period, or the system transmit power threshold is an average system transmit power or the lowest system transmit power in a half-duplex transmission mode in the history statistical period.

7. An antenna TX/RX combination determining method in a full-duplex transmission mode, the method comprising:

obtaining system performance evaluation values corresponding to a plurality of candidate antenna TX/RX combinations in the full-duplex transmission mode, wherein the plurality of candidate antenna TX/RX combinations is a universal set of candidate antenna TX/RX combinations in the full-duplex transmission mode, or a third subset of the universal set of candidate antenna TX/RX combinations in the full-duplex transmission mode;

selecting an optimal performance evaluation value among the system performance evaluation values corresponding to the plurality of candidate antenna TX/RX combinations, or, selecting a target performance evaluation value superior to a system performance threshold among the system performance evaluation values corresponding to the plurality of candidate antenna TX/RX combinations; and

determining a candidate antenna TX/RX combination corresponding to the optimal performance evaluation value or the target performance evaluation value as an adopted antenna TX/RX combination mode;

wherein obtaining system performance evaluation values corresponding to a plurality of candidate antenna TX/RX combinations in the full-duplex transmission mode comprises;

calculating system capacities corresponding to all candidate antenna TX/RX combinations in the full-duplex transmission mode, wherein all the candidate antenna TX/RX combinations in the full-duplex transmission mode form the universal set;

or, within a first calculation period threshold, calculating system capacities corresponding to a plurality of candidate antenna TX/RX combinations in the full-duplex transmission mode, wherein the plurality of candidate antenna TX/RX combinations corresponding to which the system capacities are calculated in the full-duplex transmission mode within the first calculation period threshold forms the third subset;

selecting an optimal performance evaluation value among the system performance evaluation values corresponding to the plurality of candidate antenna TX/RX combinations, or, selecting a target performance evaluation value superior to a system performance threshold among the system performance evaluation values corresponding to the plurality of candidate antenna TX/RX combinations comprises;

selecting the maximum system capacity among the system capacities corresponding to the plurality of candidate antenna TX/RX combinations, or, selecting a target system capacity greater than a system capacity threshold among the system capacities corresponding to the plurality of candidate antenna TX/RX combinations; and

determining a candidate antenna TX/RX combination corresponding to the optimal performance evaluation value or the target performance evaluation value as an adopted antenna TX/RX combination mode comprises;

determining the candidate antenna TX/RX combination corresponding to the maximum system capacity or the target system capacity as the adopted antenna TX/RX combination mode.

8. An antenna TX/RX combination determining device in a full-duplex transmission mode, the device comprising:

a system performance evaluation value obtaining unit, configured to obtain system performance evaluation values corresponding to a plurality of candidate antenna TX/RX combinations in the full-duplex transmission mode, wherein the plurality of candidate antenna TX/RX combinations is a universal set of candidate antenna TX/RX combinations in the full-duplex transmission mode, or a third subset of the universal set of candidate antenna TX/RX combinations in the full-duplex transmission mode;

a selecting unit, configured to select an optimal performance evaluation value among the system performance evaluation values corresponding to the plurality of candidate antenna TX/RX combinations and output by the system performance evaluation value obtaining unit, or a target performance evaluation value superior to a system performance threshold among the system performance evaluation values corresponding to the plurality of candidate antenna TX/RX combinations; and

a determining unit, configured to determine a candidate antenna TX/RX combination corresponding to the optimal performance evaluation value or the target performance evaluation value as an adopted antenna TX/RX combination mode;

wherein the system performance evaluation value obtaining unit comprises a system capacity calculating unit configured to;

calculate system capacities corresponding to all candidate antenna TX/RX combinations in the full-duplex transmission mode, wherein all the candidate antenna TX/RX combinations in the full-duplex transmission mode form the universal set, or

within a first calculation period threshold, calculate system capacities corresponding to a plurality of candidate antenna TX/RX combinations in the full-duplex transmission mode, wherein the plurality of candidate antenna TX/RX combinations corresponding to which the system capacities are calculated in the full-duplex transmission mode within the first calculation period threshold forms the third subset;

the selecting unit is configured to select the maximum system capacity among the system capacities corresponding to the plurality of candidate antenna TX/RX combinations, or, select a target system capacity greater than a system capacity threshold among the system capacities corresponding to the plurality of candidate antenna TX/RX combinations; and

the determining unit is configured to determine a candidate antenna TX/RX combination corresponding to the maximum system capacity or the target system capacity as an adopted antenna TX/RX combination mode.

9. A transmission mode selecting device in a radio communications system, the radio communications system comprising a first communications equipment and a second communications equipment, the first communications equipment comprising M antennas, the second communications equipment comprising N antennas, the transmission mode selecting device comprising:

a processing device comprising at least one processor, the processing device configured to;

obtain a first system capacity in a half-duplex transmission mode;

obtain a second system capacity in a full-duplex transmission mode, wherein the second system capacity is the maximum value among system capacities of a universal set of candidate antenna TX/RX combinations in the full-duplex transmission mode, or the maximum value among system capacities of a first subset of the candidate antenna TX/RX combinations in the full-duplex transmission mode, or a system capacity exceeding a system capacity threshold;

select a target transmission mode according to a comparison result between the first system capacity and the second system capacity wherein the target transmission mode is a transmission mode corresponding to a larger value between the first system capacity and the second system capacity; and

when the target transmission mode is the full-duplex transmission mode, the processing device is further configured to;

perform full-duplex data transmission in accordance with an antenna TX/RX combination corresponding to the second system capacity, wherein the antenna TX/RX combination corresponding to the second system capacity refers to a transmission mode of each antenna among the M antennas of the first communications equipment and a transmission mode of each antenna among the N antennas of the second communications equipment when the full-duplex transmission mode is used for transmission, and the transmission mode of the antenna is receiving signals or transmitting signals.

10. The device according to claim 9, wherein the processing device is configured to:

when the second system capacity is greater than the first system capacity, select the full-duplex transmission mode; and

when the second system is smaller than the first system capacity, select the half-duplex transmission mode.

11. A transmission mode selecting device in a radio communications system, the radio communications system comprising a first communications equipment and a second communications equipment, the first communications equipment comprising M antennas, the second communications equipment comprising N antennas, the transmission mode selecting device comprising:

a processing device comprising at least one processor, the processing device configured to;

obtain a first system transmit power in a half-duplex transmission mode;

obtain a second system transmit power in a full-duplex transmission mode, wherein the second system transmit power is the minimum value among system transmit powers of a universal set of candidate antenna TX/RX combinations in the full-duplex transmission mode, or the minimum value among system transmit powers of a second subset of the candidate antenna TX/RX combinations in the full-duplex transmission mode, or a system transmit power smaller than a system transmit power threshold;

select a target transmission mode according to a comparison result between the first system transmit power and the second system transmit power, wherein the target transmission mode is a transmission mode corresponding to a smaller value between the first system transmit power and the second system transmit power; and

when the target transmission mode is the full-duplex transmission mode, the processing device is further configured to;

perform full-duplex data transmission in accordance with an antenna TX/RX combination corresponding to the second system transmit power, wherein the antenna TX/RX combination corresponding to the second system transmit power refers to a transmission mode of each antenna among the M antennas of the first communications equipment and a transmission mode of each antenna among the N antennas of the second communications equipment when the full-duplex transmission mode is used for transmission, and the transmission mode of the antenna is receiving signals or transmitting signals.

12. The device according claim 11, wherein the processing device is configured to:

when the second system transmit power is smaller than the first system transmit power, select the full-duplex transmission mode; and

when the second system transmit power is greater than the first system transmit power, select the half-duplex transmission mode.

13. A radio communications system, comprising:

a third communications equipment and a fourth communications equipment;

wherein the third communications equipment is configured to;

when needing to perform data transmission with a second communications equipment, obtain a first system transmit power in a half-duplex transmission mode,

obtain a second system transmit power in a full-duplex transmission mode, wherein the second system transmit power is the minimum value among system transmit powers of a universal set of candidate antenna TX/RX combinations in the full-duplex transmission mode, or the minimum value among system transmit powers of a second subset of the candidate antenna TX/RX combinations in the full-duplex transmission mode, or a system transmit power smaller than a system transmit power threshold;

select a target transmission mode according to a comparison result between the first system transmit power and the second system transmit power, wherein the target transmission mode is a transmission mode corresponding to a smaller value between the first system transmit power and the second system transmit power, and

perform data transmission with the fourth communications equipment based on the target transmission mode; and

wherein the fourth communications equipment is configured to;

receive data which is transmitted from the third communications equipment based on the target transmission mode, and/or, transmit data to the third communications equipment;

wherein;

when the target transmission mode is a full-duplex transmission mode, the third communications equipment is configured to perform full-duplex data transmission with the fourth communications equipment based on an antenna TX/RX combination corresponding to the second system transmit power, wherein the antenna TX/RX combination corresponding to the second system transmit power refers to a transmission mode of each antenna among M antennas on the third communications equipment, and a transmission mode of each antenna among N antennas on the fourth communications equipment when the full-duplex transmission mode is used for transmission, and the transmission mode of the antenna is receiving signals or transmitting signals.

14. The system according to claim 13, wherein the fourth communications equipment comprises communications equipment provided with a plurality of antennas, or a set of a plurality of communications equipment;

and in the set of a plurality of communications equipment, each communications equipment is provided with one or more antennas.

15. A radio communications system, comprising:

a first communications equipment and a second communications equipment;

wherein the first communications equipment is configured to;

when needing to perform data transmission with the second communications equipment, obtain a first system capacity in a half-duplex transmission mode;

obtain a second system capacity in a full-duplex transmission mode, wherein the second system capacity is the maximum value among system capacities of a universal set of candidate antenna TX/RX combinations in the full-duplex transmission mode, or the maximum value among system capacities of a first subset of the candidate antenna TX/RX combinations in the full-duplex transmission mode, or a system capacity exceeding a system capacity threshold,

select a target transmission mode according to a comparison result between the first system capacity and the second system capacity, wherein the target transmission mode is a transmission mode corresponding to a larger value between the first system capacity and the second system capacity, and

perform data transmission with the second communications equipment based on the target transmission mode; and

wherein the second communications equipment is configured to;

receive data which is transmitted from the first communications equipment based on the target transmission mode, and/or, transmit data to the first communications equipment;

wherein;

the target transmission mode is the full-duplex transmission mode; and

the first communications equipment is configured to perform full-duplex data transmission with the second communications equipment based on an antenna TX/RX combination corresponding to the second system capacity, wherein the antenna TX/RX combination corresponding to the second system capacity refers to a transmission mode of each antenna among M antennas on the first communications equipment, and a transmission mode of each antenna among N antennas on the second communications equipment when the full-duplex transmission mode is used for transmission, and the transmission mode of the antenna is receiving signals or transmitting signals.

16. The system according to claim 15, wherein the second communications equipment comprises communications equipment provided with a plurality of antennas, or a set of a plurality of communications equipment;

and in the set of a plurality of communications equipment, each communications equipment may be provided with one or more antennas.