CN111600687B - Method and equipment for reducing interference - Google Patents

Method and equipment for reducing interference Download PDF

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Publication number
CN111600687B
CN111600687B CN201910129455.6A CN201910129455A CN111600687B CN 111600687 B CN111600687 B CN 111600687B CN 201910129455 A CN201910129455 A CN 201910129455A CN 111600687 B CN111600687 B CN 111600687B
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terminal
target position
position information
network side
uplink
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CN111600687A (en
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刘建军
柯颋
吴丹
张静文
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China Mobile Communications Group Co Ltd
China Mobile Communications Ltd Research Institute
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China Mobile Communications Group Co Ltd
China Mobile Communications Ltd Research Institute
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048Allocation of pilot signals, i.e. of signals known to the receiver
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053Allocation of signaling, i.e. of overhead other than pilot signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058Allocation criteria
    • H04L5/0062Avoidance of ingress interference, e.g. ham radio channels

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention provides a method and equipment for reducing interference, which are used for solving the problem of interference between RIM RS (radio identity) sent by an interfered base station and uplink reception of an interfering base station in the existing remote base station interference management technology. After detecting the RIM RS, the network side equipment determines the position information of the RIM RS in the current uplink and downlink conversion period; determining target position information of the RIM RS in a subsequent uplink and downlink conversion period according to the position information; sending the target position information to a terminal so that the terminal adjusts the transmitting power of an uplink signal on the target position information or sends the uplink signal on resources except the target position resource corresponding to the target position information in a subsequent uplink and downlink conversion period; the terminal uses the adjusted transmitting power to transmit the uplink signal, or the transmitting resource of the uplink signal avoids the position resource of the RIM RS, and the interference between the uplink signal receiving and the RIM RS receiving is reduced.

Description

Method and equipment for reducing interference
Technical Field
The present invention relates to the field of wireless communications technologies, and in particular, to a method and a device for reducing interference.
Background
In a network of a TDD (Time Division Duplex) system, the same uplink and downlink configuration conditions are generally selected to avoid uplink and downlink interference between cells. And a Guard Period (for example, guard Period, GP) is set between the downlink timeslot and the uplink timeslot, for example, N OFDM (Orthogonal Frequency Division Multiplexing) symbols are set, and the length of the GP needs to be selected to ensure that downlink transmission of a base station within a certain range does not generate interference to uplink reception of the base station.
Due to the loss of electromagnetic wave in space transmission, the interfered base station can not experience the interference generated by downlink transmission of the interfering base station within hundred kilometers under general conditions. However, due to the influence of factors such as atmospheric refraction and propagation environment, downlink transmission of an interfering base station hundreds of kilometers away interferes with uplink reception of an interfered base station, that is, interference of a far-end base station caused by an atmospheric waveguide phenomenon is shown in fig. 1, which is a schematic diagram of interference of a TDD interfering base station.
After the uplink reception of the interfered base station is interfered by the interfering base station, the interfering base station continuously transmits RS (Reference Signal) to the interfering base station before the atmospheric waveguide disappears, and the interfering base station receives the RS transmitted by the interfered base station and also receives data transmitted by the terminal at the same time of uplink reception, so that the continuous transmission of RS to the interfering base station causes interference to the uplink reception of the interfering base station.
In summary, interference occurs between the reference signal transmitted by the interfered base station and the uplink reception of the interfering base station.
Disclosure of Invention
The invention provides a method and equipment for reducing interference, which are used for solving the problem of interference generated between a reference signal sent by an interfered base station and uplink reception of an interfering base station in the prior art.
In a first aspect, an embodiment of the present invention provides a method for reducing interference, where the method includes:
after detecting a Remote Interference Management Reference Signal (RIM RS), network side equipment determines position information of the RIM RS in a current uplink and downlink conversion period;
the network side equipment determines target position information of the RIM RS in a subsequent uplink and downlink conversion period according to the position information;
and the network side equipment sends the target position information to a terminal so that the terminal can send subsequent uplink signals according to the target position information.
According to the method, after the network side equipment detects the RIM RS, the position information of the RIM RS in the current uplink and downlink conversion period is determined, the target position information of the RIM RS is received in the subsequent uplink and downlink conversion period according to the position information, the determined target position information is sent to the terminal, so that after the terminal receives the target position information of the RIM RS in the subsequent uplink and downlink conversion period sent by the network side equipment, when uplink signals are carried out in the subsequent uplink and downlink conversion period according to the target position information, the terminal carries out uplink signal sending according to the target position, and the interference between the uplink signals and the RIM RS is reduced on the network side equipment side.
In a possible implementation manner, when the network side device sends the target location Information to a terminal, the network side device sends the target location Information to the terminal through DCI (Downlink Control Information); or
And the network side equipment sends the target position information to the terminal through a high-level signaling.
In the method, the network side equipment sends the target position information to the terminal through DCI or high-level signaling so that the terminal can successfully receive the target position information, and adjusts the transmitting power of the uplink signal on the target position information so that the network side equipment reduces the interference between the uplink signal and the RIM RS.
In a possible implementation manner, the network side device sends a power control parameter value for determining a terminal transmission power to the terminal; and/or
And the network side equipment sends indication information for determining the transmission power to the terminal.
In the method, the given network side equipment also sends the power control parameter value and/or the indication information to the terminal, so that the terminal adjusts the transmission power according to the power control parameter value and/or the indication information.
In a second aspect, an embodiment of the present invention provides a method for reducing interference, where the method includes:
the terminal receives target position information of the RIM RS sent by the network side equipment;
and the terminal transmits subsequent uplink signals according to the target position information.
In the method, the terminal receives the target position information of the subsequent uplink and downlink conversion period sent by the network side equipment and sends the uplink signal according to the target position so as to reduce the interference between the uplink signal and the RIM RS at the network side equipment.
In a possible implementation manner, when the terminal receives target location information of a RIM RS sent by a network side device, the terminal acquires the target location information sent by the network side device by detecting DCI; or
And the terminal acquires the target position information sent by the network side equipment by detecting a high-level signaling.
In the method, the terminal receives the target position information sent by the network side equipment through the DCI or the high-level signaling, so that the terminal can accurately receive the target position information sent by the network side equipment.
In a possible implementation manner, when the terminal sends a subsequent uplink signal according to the target location information, the terminal adjusts the transmission power of the uplink signal on a target location resource corresponding to the target location information in a subsequent uplink/downlink conversion period; or
And the terminal sends an uplink signal on resources except the target position resource corresponding to the target position information in the subsequent uplink and downlink conversion period.
In the method, after receiving the target position information, the terminal adjusts the transmitting power of the uplink signal on the target position resource corresponding to the target position information when performing subsequent uplink signal transmission, and the terminal transmits the uplink signal on the target position resource corresponding to the target position information by using the adjusted transmitting power; or sending the uplink signal on resources except the target position resource corresponding to the target position information in the subsequent uplink and downlink conversion period, so that the sending resource of the uplink signal of the terminal avoids the target resource corresponding to the target position information, and the interference between the network side equipment for receiving the uplink signal and the RIM RS reference signal is reduced.
In a possible implementation manner, when the terminal adjusts the transmission power of the uplink signal on the target location resource corresponding to the target location information in the subsequent uplink and downlink conversion period, the terminal adjusts the transmission power of the uplink signal on the target location resource corresponding to the target location information according to the received power control parameter value sent by the network side device; or
And the terminal adjusts the transmitting power of the uplink signal on the target position resource corresponding to the target position information according to the received indication information sent by the network side equipment.
In the method, when the terminal adjusts the transmission power of the uplink signal on the target position resource corresponding to the target position information of the subsequent uplink and downlink conversion period, the terminal adjusts the transmission power according to the power control parameter value sent by the network side equipment; or adjusting the transmitting power according to the indication information, so that the terminal can more accurately adjust the transmitting power, ensure that the uplink signal transmitted to the network side equipment cannot cause the signal of the RIM RS detected by the network side equipment to be reduced, and simultaneously detect that the RIM RS cannot influence the reception of the uplink signal, thereby reducing the interference between the RIM RS and the uplink signal.
In a possible implementation manner, when the terminal adjusts the transmission power of the uplink signal on the target location resource corresponding to the target location information according to the received indication information sent by the network side device:
if the terminal determines that the main interference is the interference of the uplink signal of the terminal on the RIM RS received by the network side equipment according to the indication information, the transmitting power of the uplink signal on the target position resource is adjusted to be lower than a set power threshold; or
And if the terminal determines that the main interference is the interference of the RIM RS received by the network side equipment on the uplink signal of the terminal according to the indication information, adjusting the transmitting power of the uplink signal on the target position resource to be higher than a set power threshold.
The method can more clearly give how the terminal adjusts the transmitting power of the uplink signal on the target position resource corresponding to the target position information according to the indication information sent by the network side equipment, and when the terminal determines that the terminal is the main interference, the transmitting power of the uplink signal is reduced, so that the network side equipment can successfully detect the RIM RS, or when the terminal determines that the terminal is not the main interference, the transmitting power of the uplink signal is improved, so as to resist the interference generated by the RIM RS.
In a possible implementation manner, the terminal sends the uplink signal on a resource other than the target location resource corresponding to the target location information by:
time division multiplexing, and/or frequency division multiplexing, and/or space division multiplexing.
The method gives the position resource on which the terminal determines to send the uplink signal, so that the terminal can accurately avoid receiving the position resource corresponding to the position information of the RIM RS, the network side equipment cannot receive both the RIM RS and the uplink signal of the terminal on the same position information, and the interference is reduced.
In a third aspect, an embodiment of the present invention provides a method for reducing interference, where the method includes:
after detecting the RIM RS, the network side equipment determines the position information of the RIM RS in the current uplink and downlink conversion period;
the network side equipment determines resources scheduled to the terminal from the resources except the position resources corresponding to the position information;
and the network side equipment sends scheduling information of uplink transmission resources to the terminal according to the determined resources scheduled to the terminal.
According to the method, after the network side equipment detects the RIM RS, the position information of the RIM RS in the current uplink and downlink conversion period is determined, the network side equipment determines the resources scheduled to the terminal from the resources except the resources corresponding to the position information, and sends the resource scheduling information to the terminal according to the resources scheduled to the terminal, so that when the terminal sends uplink signals in the subsequent uplink and downlink conversion period, the uplink signal scheduling is carried out according to the resource scheduling information sent by the network side equipment, and the network side equipment is ensured not to receive the uplink signals at the RIM RS receiving position when the terminal sends the uplink signals, so that the interference generated between the uplink signals and the RIM RS is reduced.
In a possible implementation manner, when the network side device sends the resource scheduling information to the terminal, the network side device sends the resource scheduling information to the terminal through an UL Grant (Uplink Grant).
In a possible implementation manner, the sending, by the network side device, scheduling information of the uplink transmission resource to the terminal includes part or all of the following:
time domain resource scheduling information, frequency domain position resource scheduling information and space domain resource scheduling information.
In a fourth aspect, an embodiment of the present invention provides an apparatus for reducing interference, where the apparatus includes: a processor and a transceiver:
the processor is configured to: carrying out data transmission through the transceiver, and determining the position information of a remote interference management reference signal (RIM RS) in the current uplink and downlink conversion period after detecting the RIM RS;
determining target position information of the RIM RS in a subsequent uplink and downlink conversion period according to the position information;
and sending the target position information to a terminal so that the terminal can send subsequent uplink signals according to the target position information.
In one possible implementation, the processor is specifically configured to:
sending the target position information to the terminal through Downlink Control Information (DCI); or
And sending the target position information to the terminal through a high-level signaling.
In one possible implementation, the processor is further configured to:
sending a power control parameter value for determining the transmitting power of the terminal to the terminal;
and/or
And sending indication information for determining the transmission power to the terminal.
In a fifth aspect, an embodiment of the present invention provides an apparatus for reducing interference, where the apparatus includes: a processor and a transceiver:
the processor is configured to: carrying out data transmission through the transceiver, and receiving target position information of the RIM RS sent by the network side equipment;
and carrying out subsequent uplink signal transmission according to the target position information.
In one possible implementation, the processor is specifically configured to:
acquiring the target position information sent by the network side equipment by detecting DCI; or
And acquiring the target position information sent by the network side equipment by detecting a high-level signaling.
In one possible implementation, the processor is specifically configured to:
adjusting the transmitting power of an uplink signal on a target position resource corresponding to the target position information in the subsequent uplink and downlink conversion period; or
And sending an uplink signal on resources except the target position resource corresponding to the target position information in the subsequent uplink and downlink conversion period.
In one possible implementation, the processor is specifically configured to:
adjusting the transmitting power of an uplink signal on a target position resource corresponding to the target position information according to the received power control parameter value sent by the network side equipment; or
And adjusting the transmitting power of the uplink signal on the target position resource corresponding to the target position information according to the received indication information sent by the network side equipment.
In one possible implementation, the processor is specifically configured to:
if the main interference is determined to be the interference of the uplink signal per se on the RIM RS received by the network side equipment according to the indication information, adjusting the transmitting power of the uplink signal on the target position resource to be lower than a set power threshold value; or
And if the main interference is determined to be the interference of the RIM RS received by the network side equipment to the uplink signal of the network side equipment according to the indication information, adjusting the transmitting power of the uplink signal on the target position resource to be higher than a set power threshold.
In a possible implementation manner, the processor sends the uplink signal on a resource other than a target location resource corresponding to the target location information by:
time division multiplexing, and/or frequency division multiplexing, and/or space division multiplexing.
In a sixth aspect, an embodiment of the present invention provides an apparatus for reducing interference, where the apparatus includes: the apparatus comprises: a processor and a transceiver:
the processor is configured to: carrying out data transmission through the transceiver, and determining the position information of the RIM RS in the current uplink and downlink conversion period after detecting the RIM RS;
determining resources scheduled to the terminal from resources except for the position resources corresponding to the position information;
and sending scheduling information of uplink transmission resources to the terminal according to the determined resources scheduled to the terminal.
In one possible implementation, the processor is specifically configured to:
and sending the scheduling information of the uplink transmission resource to the terminal through an uplink scheduling Grant (UL Grant).
In a possible implementation manner, the processor sends scheduling information of the uplink transmission resource to the terminal, where the scheduling information includes part or all of the following:
time domain resource scheduling information, frequency domain position resource scheduling information and space domain resource scheduling information.
In a seventh aspect, an embodiment of the present invention further provides an apparatus for reducing interference, where the apparatus includes: at least one processing unit and at least one memory unit, wherein the memory unit stores program code that, when executed by the processing unit, causes the processing unit to perform the steps of the method of any of the first, second or third aspects.
In an eighth aspect, an embodiment of the present invention provides a computer storage medium, on which a computer program is stored, where the program, when executed by a processor, implements an aspect of any one of the first, second, and third aspects.
In addition, for technical effects brought by any one implementation manner of the fourth aspect to the eighth aspect, reference may be made to technical effects brought by different implementation manners of the first aspect to the third aspect, and details are not described herein again.
These and other aspects of the invention are apparent from and will be elucidated with reference to the embodiments described hereinafter.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is a diagram illustrating interference from a TDD interfering base station;
fig. 2 is a flow chart of a method of performing interference backoff;
fig. 3 shows an interference avoidance mechanism of an interfering base station in a TD-LTE (TD-SCDMA Long Term Evolution) network;
fig. 4 is a flowchart of a first interference management mechanism of the interfering base station in fig. 5G;
fig. 5 is a flowchart of a second interference management mechanism of the interfering base station in fig. 5G;
fig. 6 is a flowchart of a third interference management mechanism for interfering base stations in fig. 5G;
fig. 7 is a block diagram of a system for reducing interference according to an embodiment of the present invention;
fig. 8 is a structural diagram of a first interference reduction device according to an embodiment of the present invention;
fig. 9 is a diagram of a second interference reduction device according to an embodiment of the present invention;
fig. 10 is a block diagram of a third interference reduction apparatus according to an embodiment of the present invention;
fig. 11 is a diagram illustrating a fourth interference reduction apparatus according to an embodiment of the present invention;
fig. 12 is a flowchart of a first method for reducing interference according to an embodiment of the present invention;
fig. 13 is a flowchart of a second method for reducing interference according to an embodiment of the present invention;
FIG. 14 is a flow chart of another method for reducing interference according to an embodiment of the present invention;
fig. 15 is a diagram illustrating a first interference reduction scheme according to an embodiment of the present invention;
fig. 16 is a diagram illustrating a second interference reduction scheme according to an embodiment of the present invention;
fig. 17 is a diagram of a fifth interference reduction device structure according to an embodiment of the present invention;
fig. 18 is a block diagram of a sixth interference reduction device according to an embodiment of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
1. The term "and/or" in the embodiments of the present invention describes an association relationship of associated objects, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
2. The interference base station in the embodiment of the present invention refers to a network side device that generates interference to a wireless signal transmitted by another network side device or a network side device that generates interference to uplink reception of another network side device in a wireless signal transmission process.
3. The interfered base station in the embodiment of the invention refers to the condition that the sent wireless signal is interfered by the wireless signals sent by other network side equipment in the wireless signal sending process; or in the process of receiving the wireless signals, the received wireless signals are interfered by the wireless signals sent by other network side equipment.
4. The "network side device" in the embodiments of the present invention refers to an interfering base station that can send a wireless signal, such as a 4G base station, a 5G base station, and a macro base station.
The application scenario described in the embodiment of the present invention is for more clearly illustrating the technical solution of the embodiment of the present invention, and does not form a limitation on the technical solution provided in the embodiment of the present invention, and it can be known by a person skilled in the art that, with the occurrence of a new application scenario, the technical solution provided in the embodiment of the present invention is also applicable to similar technical problems. In the description of the present invention, the term "plurality" means two or more unless otherwise specified.
Due to the influence of factors such as atmospheric refraction and environmental propagation, downlink transmission of an interfering base station (a base station other than a hundred kilometers) interferes with uplink reception of an interfered base station (a local base station).
In a solution of interference of an interfering base station in an existing TD-LTE (TD-SCDMA Long Term Evolution, time division synchronous code division multiple access-Long Term Evolution) network, an interfered base station sends a reference signal, and the interfering base station determines that it is interfering with other base stations after receiving the reference signal, and then performs interference back-off, specifically as shown in fig. 2, a flowchart of a method for performing interference back-off includes the following steps:
step 200, after detecting the interference of an interference base station, the interfered base station sends RS to the interference base station;
step 210, after receiving the RS sent by the interfered base station, the interfering base station determines that the interfering base station is interfering with other stations, and then performs interference back-off;
the interference backoff method comprises the following steps that (1) a reference value of a TD-LTE special subframe ratio is that (3) of the TD-LTE special subframe ratio is that;
step 220, after the interfered base station does not detect the interference of the interference base station, stopping sending the RS;
step 230, after the interfering base station does not receive the RS sent by the interfered base station, the special subframe ratio is restored to 9.
Specifically, as shown in fig. 3, an interference backoff mechanism for an interfering base station is adopted for the TD-LTE network.
With the continuous development of 5G technology, in a 5G mobile communication system, research is performed on a 5G Interference base station RIM (Interference management mechanism), and the following three Interference management mechanisms are specifically adopted in 5G:
fig. 4 is a flowchart of a first interference management mechanism of the interfering base station in fig. 5G; specifically, after detecting the interference of the interference base station, the interfered base station sends RS-1 to the interference base station; after receiving the RS-1, the interference base station executes interference backoff and sends RS-2; receiving the RS-2 by the interfered base station shows that the atmospheric waveguide phenomenon still exists, and therefore, continuously sending RS-1 to the interfering base station; when the atmospheric waveguide phenomenon disappears, the interfered base station cannot monitor the RS-2, so that the RS-1 is stopped to be transmitted; the interfering base station does not listen to the RS-1, and therefore stops RS listening and RS-2 transmission.
Fig. 5 is a flowchart of a second interference management mechanism of the interfering base station in fig. 5G; specifically, the interfered base station sends an RS to the interfering base station after detecting the interference of the interfering base station; after receiving the RS, the interference base station executes interference back-off and informs the interfered base station through Backhaul; when the atmospheric waveguide phenomenon disappears, the disturbing base station cannot monitor the RS, monitor the RS and restore the original configuration, and stop the disturbed base station from monitoring the RS through Backhaul; and the disturbed base station receives the notice that the RS cannot be monitored, which is sent by the disturbed base station, through Backhaul, determines that the atmospheric waveguide phenomenon disappears, and stops sending the RS.
Fig. 6 is a flowchart of an interference management mechanism of a third interfering base station in fig. 5G; after detecting the interference of an interference base station, the interfered base station sends an RS to the interference base station; after receiving the RS, the interfering base station informs the interfered base station of receiving the RS through Backhaul; the interfered base station sends RIM auxiliary information to the interfering base station through Backhaul, and determines that the interfering base station needs to execute interference backoff; after receiving RIM auxiliary information, the interference base station executes interference back-off; when the atmospheric waveguide phenomenon disappears, the disturbing base station cannot monitor the RS, the RS monitoring is stopped, the original configuration is recovered, and the disturbed base station is informed that the RS cannot be monitored through Backhaul; and the interfered base station receives a notice that the interference base station cannot monitor the RS through Backhaul, determines that the atmospheric waveguide phenomenon disappears, and stops sending the RS.
Based on the above content, the disturbing base station receives the far-end interference management reference signal sent by the disturbed base station in the uplink, and simultaneously the disturbing base station also receives the uplink signal sent by the terminal in the uplink, and at this time, the far-end interference management reference signal and the uplink signal interfere with each other; therefore, the embodiment of the present invention provides a method for reducing interference, where a terminal determines how to send an uplink signal according to received target location information, and a specific network-side device determines, after detecting a far-end interference management reference signal, location information of the received far-end interference management reference signal in a current uplink/downlink switching cycle, determines, according to the location information in the current uplink/downlink switching cycle, target location information in a subsequent uplink/downlink switching cycle, and sends the determined target location information to the terminal, so that the terminal determines, after receiving the target location information, to adjust transmission power for sending the uplink signal on a target location resource corresponding to the target location information, or avoids the target location resource corresponding to the target location information when sending the uplink signal, so as to reduce interference; or
The embodiment of the invention also provides a method for reducing interference by sending resource scheduling information to the terminal, and the specific network side equipment determines to receive the position information in the current uplink and downlink conversion period of the remote interference management reference signal after detecting the remote interference management reference signal, and determines the resource scheduled to the terminal from the resources except the position resource corresponding to the position information when sending the scheduling information of the uplink transmission resource to the terminal, so that the terminal avoids the position resource of the network side equipment for receiving the remote interference management reference signal when sending the uplink signal, and the network side equipment receives the uplink signal and the remote interference management reference signal are not on the same position resource, thereby reducing interference.
The network architecture and the service scenario described in the embodiment of the present invention are for more clearly illustrating the technical solution of the embodiment of the present invention, and do not form a limitation on the technical solution provided in the embodiment of the present invention, and it can be known by those skilled in the art that the technical solution provided in the embodiment of the present invention is also applicable to similar technical problems along with the evolution of the network architecture and the appearance of a new service scenario.
As shown in fig. 7, a system structure diagram for reducing interference provided in the embodiment of the present invention specifically includes a network side device 70 and a terminal 71:
the network side device 70 is configured to determine, after detecting the RIM RS, location information of the RIM RS in a current uplink/downlink switching period; determining target position information of the RIM RS in a subsequent uplink and downlink conversion period according to the position information; and sending the target position information to a terminal so that the terminal can send subsequent uplink signals according to the target position information.
The terminal 71 is used for receiving target position information of the RIM RS sent by the network side equipment; and carrying out subsequent uplink signal transmission according to the target position information.
And the target position information is the position information of the RIM RS received by the network side equipment in the subsequent uplink and downlink conversion period.
In the method, after detecting the RIM RS, the network side equipment determines the position information of the RIM RS in the current uplink and downlink conversion period, determines the target position information of the received RIM RS in the subsequent uplink and downlink conversion period according to the position information, and sends the determined target position information of the received RIM RS in the subsequent uplink and downlink conversion period to the terminal, so that after receiving the target position information of the received RIM RS in the subsequent uplink and downlink conversion period sent by the network side equipment, the terminal carries out uplink signal in the subsequent uplink and downlink conversion period according to the target position information, and carries out uplink signal sending according to the target position, so as to reduce the interference between the uplink signal and the RIM RS on the network side equipment side.
In the embodiment of the present invention, the uplink signal includes, but is not limited to, part or all of the following:
PUCCH (Physical Uplink Control CHannel), PUSCH (Physical Uplink Shared CHannel), PRACH (Physical Random Access CHannel).
When the network side equipment sends the target position information to the terminal, the target position information is mainly sent to the terminal through DCI or high-level signaling;
optionally, when the network side device sends the target location information to the terminal:
the network side equipment sends the target position information to the terminal through Downlink Control Information (DCI); or
And the network side equipment sends the target position information to the terminal through a high-level signaling.
Correspondingly, when receiving the target location information sent by the network side equipment, the terminal mainly obtains the target location information through DCI or high-level signaling;
optionally, when the terminal receives target location information of the RIM RS sent by the network side device:
the terminal acquires the target position information sent by the network side equipment by detecting DCI; or
And the terminal acquires the target position information sent by the network side equipment by detecting a high-level signaling.
After receiving the target position information, the terminal sends an uplink signal according to the target position information;
when the terminal sends an uplink signal, sending the uplink signal on resources except the target position resource corresponding to the target position information; or
When the terminal sends an uplink signal, the transmitting power of the uplink signal is adjusted on a target position resource corresponding to the target position information; the following are specifically introduced:
the first condition is as follows: and the terminal transmits the uplink signal on resources except the target position resource corresponding to the target position information.
After receiving the target location information sent by the network side equipment, the terminal sends the uplink signal on the resources except the target location resource corresponding to the target location information according to the time division multiplexing, frequency division multiplexing, space division multiplexing and other modes, so that the network side equipment is prevented from receiving the uplink signal sent by the terminal and receiving the far-end interference management reference signal sent by the interfered base station at the same position, and the interference generated between the uplink signal and the far-end interference management reference signal is further reduced.
Case two: and the terminal adjusts the transmitting power on the target position resource corresponding to the target position information.
In this case, the network side device further sends a power control parameter value for determining the transmission power to the terminal; and/or indication information for determining a transmit power;
the indication information is mainly used for enabling the terminal to determine whether the terminal is mainly interfered; if the indication information indicates that the uplink signal of the terminal generates interference on the RIM RS received by the network side equipment, so that the signal received by the RIM RS by the network side equipment is weak, the terminal determines that the terminal is main interference; or
If the indication information indicates that the RIM RS received by the network side equipment generates interference on the uplink signal of the terminal, and the signal of the uplink signal sent by the network side equipment receiving terminal is weak, the terminal determines that the terminal is not the main interference and the RIM RS sent by the interfered base station is the main interference.
In the embodiment of the present invention, if the network side device sends a power control parameter value for determining a transmission power to a terminal, the terminal directly adjusts the transmission power to the power control parameter value after receiving the power control parameter value; or
If the network side equipment sends the indication information for determining the transmission power to the terminal, the terminal determines whether the terminal is the main interference according to the indication information after receiving the indication information, and the terminal adjusts the transmission power of the uplink signal on the target position resource to be lower than a set power threshold value after determining that the terminal is the main interference so as to improve the detection of the network side equipment on the RIM RS; or after the terminal determines that the terminal is not the main interference, the terminal adjusts the transmission power of the uplink signal on the target position resource to be higher than a set power threshold value so as to resist RIM RS interference.
When the terminal adjusts the transmitting power of the uplink signal on the target position resource, the terminal can adjust the transmitting power in the following modes:
the method I comprises the following steps: the terminal directly adjusts the transmitting power of the uplink signal on the target position resource to a maximum power threshold or a minimum power threshold;
the second method comprises the following steps: the terminal increases at least one set step value or decreases at least one set step value on the basis of the set power threshold value; when the adjustment is carried out, one step length can be adjusted each time, and a plurality of step lengths can also be adjusted each time;
it should be noted that the above-mentioned manner of adjusting power is only an example, and any scheme that can be used for power adjustment can be applied to the present invention, and is not described herein again.
In the embodiment of the present invention, the position information may be at least one of a time slot position in a time domain, a frequency domain position in a frequency domain, and a beam in a space domain, and the following embodiment is used to explain, by taking the example that the terminal adjusts the power of the uplink signal transmitted on the target position resource corresponding to the target position information according to the received target position information.
The first embodiment is as follows: time domain + power domain;
the network side equipment acquires the time slot position information received by the RIM RS in the current uplink and downlink conversion period by detecting the RIM RS, determines the target time slot position information of the received RIM RS in the subsequent uplink and downlink conversion period according to the received time slot position information in the current uplink and downlink conversion period, and informs the terminal network side equipment of receiving the target time slot position information of the RIM RS in the subsequent uplink and downlink conversion period through network side signaling (DCI or high-level signaling);
the terminal receives target time slot position information of the RIM RS in a subsequent uplink and downlink conversion period sent by the network side equipment;
the network side equipment configures a terminal to receive a target time slot position resource corresponding to target time slot position information of the RIM RS in a subsequent uplink and downlink conversion period, adjusts uplink signal transmitting power, and sends indication information for determining whether the terminal is mainly interfered to the terminal, so as to determine whether the RIM RS mainly interferes with an uplink signal or the uplink signal mainly interferes with the RIM RS;
when the interference of the RIM RS to the uplink signal is main interference, the terminal determines that the terminal is not the main interference, and the transmitting power of the uplink signal is increased on the time slot position resource corresponding to the target time slot position information so as to resist the interference of the RIM RS;
when the interference of the uplink signal to the RIM RS is main interference, the terminal determines that the terminal is the main interference, and reduces the transmitting power of the uplink signal on the time slot position resource corresponding to the target position time slot information so as to improve the detection performance of the RIM RS;
the mutual interference between the RIM RS receiving and the terminal uplink signal is reduced, and no extra resource overhead exists.
Example two: frequency domain + power domain;
the network side equipment acquires the receiving frequency domain position information of the RIM RS in the current uplink and downlink conversion period by detecting the RIM RS, determines the target frequency domain position information of the receiving RIM RS in the subsequent uplink and downlink conversion period according to the receiving frequency domain position information in the current uplink and downlink conversion period, and informs the terminal network side equipment of receiving the target frequency domain position information of the RIM RS in the subsequent uplink and downlink conversion period through network side signaling (DCI or high-level signaling);
the terminal receives target frequency domain position information of the RIM RS in a subsequent uplink and downlink conversion period sent by the network side equipment;
the network side equipment configures a terminal to receive a target frequency domain position resource corresponding to target frequency domain position information of the RIM RS in a subsequent uplink and downlink conversion period, adjusts uplink signal transmitting power, and sends indication information used for indicating whether the terminal is mainly interfered to the terminal, so as to determine whether the RIM RS mainly interferes with an uplink signal or the uplink signal mainly interferes with the RIM RS;
when the interference of the RIM RS to the uplink signal is the main interference, the terminal determines that the terminal is not the main interference, and the transmitting power of the uplink signal is increased on the frequency domain position resource corresponding to the target frequency domain position information so as to resist the interference of the RIM RS;
when the interference of the uplink signal to the RIM RS is the main interference, the terminal determines that the terminal is the main interference, and reduces the transmitting power of the uplink signal on the frequency domain position resource corresponding to the target frequency domain position information so as to improve the detection performance of the RIM RS;
example three: a space domain + a power domain;
the network side equipment acquires a receiving beam of the RIM RS in the current uplink and downlink switching period by detecting the RIM RS, determines a target beam for receiving the RIM RS in the subsequent uplink and downlink switching period according to the receiving beam in the current uplink and downlink switching period, and informs the terminal network side equipment of receiving the target beam of the RIM RS in the subsequent uplink and downlink switching period through network side signaling (DCI or high-level signaling);
a terminal receives a target beam of a RIM RS in a subsequent uplink and downlink switching period sent by network side equipment;
the network side equipment configures a terminal to receive the target wave beam of the RIM RS in a subsequent uplink and downlink switching period, adjust the uplink signal transmitting power and send indication information to the terminal, wherein the indication information is used for determining whether the RIM RS mainly interferes with the uplink signal or whether the uplink signal mainly interferes with the RIM RS;
when the interference of the RIM RS to the uplink signal is the main interference, the transmitting power of the uplink signal is improved so as to resist the interference of the RIM RS;
when the interference of the uplink signal to the RIM RS is the main interference, the transmitting power of the uplink signal is reduced so as to improve the detection performance of the RIM RS;
example four: time domain + frequency domain + power domain;
when the RIM RS is transmitted only on a sub-band of one frequency domain (not as wide as 100MHz in the system bandwidth, only 20MHz is used for RIM RS transmission);
the network side equipment acquires the time slot position information received by the RIM RS in the current uplink and downlink conversion period and acquires the RIM RS frequency domain configuration information by detecting the RIM RS; according to the received time slot position information in the current uplink and downlink conversion period, determining the target time slot position information of the received RIM RS in the subsequent uplink and downlink conversion period, determining the RIM RS frequency domain configuration information, and informing the terminal network side equipment of receiving the target time slot position information of the RIM RS and the RIM RS frequency domain configuration information in the subsequent uplink and downlink conversion period through network side signaling (DCI or high layer signaling);
a terminal receives target time slot position information of a received RIM RS and RIM RS frequency domain configuration information in a subsequent uplink and downlink conversion period sent by network side equipment;
the network side equipment adjusts the transmitting power of the uplink signal on a frequency domain sub band for receiving the RIM RS by the configuration terminal in the subsequent uplink and downlink conversion period, and sends indication information to the terminal, wherein the indication information is used for determining whether the RIM RS mainly interferes the uplink signal or the RIM RS mainly interferes the RIM RS on the frequency domain sub band;
on the configured frequency domain sub band for receiving the RIM RS, when the interference of the RIM RS to the uplink signal is the main interference, the transmitting power of the uplink signal is improved to resist the interference of the RIM RS; or when the interference of the uplink signal to the RIM RS is the main interference, reducing the transmission power of the uplink signal to improve the detection performance of the RIM RS, namely adjusting the transmission power of the uplink signal in the Subband uplink.
The mutual interference between the RIM RS receiving and the terminal uplink signal is reduced, and no extra resource overhead exists.
The embodiments of the present invention are not limited to the above-mentioned embodiments, and each embodiment is to adjust the transmission power of the uplink signal sent on the target location resource corresponding to the target location information of the subsequent uplink/downlink switching period, and the situations are similar and are not described in detail.
It should be noted that, in the embodiment of the present invention, the network side device may further send a power control parameter range and indication information to the terminal, and the terminal selects a power control parameter value in the received power control parameter range according to the received indication information, and adjusts the transmission power to the selected power control parameter value;
for example, the terminal determines that the main interference is interference of an uplink signal of the terminal on an RIM RS received by the network side device according to the indication information, and adjusts the transmission power on the target location resource corresponding to the target location information to a minimum value within a received power control parameter range; or
And the terminal determines the main interference as the interference of the RIM RS received by the network side equipment on the uplink signal thereof according to the indication information, and adjusts the transmitting power on the target position resource corresponding to the target position information to the maximum value within the received power control parameter range.
As shown in fig. 8, a first structure diagram of an apparatus for reducing interference provided in an embodiment of the present invention includes: processor 800 and transceiver 810:
the processor 800 is configured to: performing data transmission through the transceiver 810, and determining the position information of the RIM RS in the current uplink and downlink switching period after detecting the RIM RS;
determining target position information of the RIM RS in a subsequent uplink and downlink conversion period according to the position information;
and sending the target position information to a terminal so that the terminal can send subsequent uplink signals according to the target position information.
Optionally, the processor 800 is specifically configured to:
transmitting the target location information to the terminal through DCI; or
And sending the target position information to the terminal through a high-level signaling.
Optionally, the processor 800 is further configured to:
sending a power control parameter value for determining the transmitting power of the terminal to the terminal;
and/or
And sending indication information for determining the transmission power to the terminal.
As shown in fig. 9, a second interference reduction device structure diagram provided in an embodiment of the present invention is specifically provided, where the device includes: at least one processing unit 900 and at least one storage unit 910, wherein the storage unit 910 stores a program code, and when the program code is executed by the processing unit 900, the processing unit 900 is enabled to execute the steps of any one of the methods for reducing interference by a network side device.
As shown in fig. 10, a third structure diagram of an apparatus for reducing interference according to an embodiment of the present invention is specifically provided, where the apparatus includes: processor 1000 and transceiver 1010:
the processor 1000 is configured to: performing data transmission through the transceiver 1010, and receiving target location information of the RIM RS sent by the network side device;
and carrying out subsequent uplink signal transmission according to the target position information.
Optionally, the processor 1000 is specifically configured to:
acquiring the target position information sent by the network side equipment by detecting DCI; or
And acquiring the target position information sent by the network side equipment by detecting a high-level signaling.
Optionally, the processor 1000 is specifically configured to:
adjusting the transmitting power of an uplink signal on a target position resource corresponding to the target position information in the subsequent uplink and downlink conversion period; or
And sending uplink signals on resources except the target position resource corresponding to the target position information in the subsequent uplink and downlink conversion period.
Optionally, the processor 1000 is specifically configured to:
adjusting the transmitting power of the uplink signal on the target position resource corresponding to the target position information according to the received power control parameter value sent by the network side equipment; or
And adjusting the transmitting power of the uplink signal on the target position resource corresponding to the target position information according to the received indication information sent by the network side equipment.
Optionally, the processor 1000 is specifically configured to:
if the main interference is determined to be the interference of the uplink signal per se on the RIM RS received by the network side equipment according to the indication information, adjusting the transmitting power of the uplink signal on the target position resource to be lower than a set power threshold value; or
And if the main interference is determined to be the interference of the RIM RS received by the network side equipment to the uplink signal of the network side equipment according to the indication information, adjusting the transmitting power of the uplink signal on the target position resource to be higher than a set power threshold.
Optionally, the processor 1000 sends the uplink signal on a resource other than the target location resource corresponding to the target location information by the following method:
time division multiplexing, and/or frequency division multiplexing, and/or space division multiplexing.
As shown in fig. 11, a fourth interference reduction structure diagram provided in an embodiment of the present invention is specifically a structure diagram of an apparatus, where the apparatus includes: at least one processing unit 1100 and at least one memory unit 1110, wherein the memory unit 1110 stores program code which, when executed by the processing unit 1100, causes the processing unit 1100 to perform the steps of any of the methods of reducing interference by a terminal.
In some possible embodiments, the various aspects of the interference reduction according to the embodiments of the present invention may also be implemented in the form of a program product, which includes program code for causing a computer device to perform the steps of the interference reduction method according to various exemplary embodiments of the present invention described in this specification, when the program code runs on the computer device.
The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium include: an electrical connection having one or more wires, a portable diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
A program product for data forwarding control according to an embodiment of the present invention may employ a portable compact disc read only memory (CD-ROM) and include program code, and may be run on a server device. However, the program product of the present invention is not limited in this regard and, in this document, a readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an information delivery, apparatus, or device.
A readable signal medium may include a propagated data signal with readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A readable signal medium may also be any readable medium other than a readable storage medium that can transmit, propagate, or transport the program for use by or in connection with the periodic network action system, apparatus, or device.
Program code embodied on a readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device, or entirely on the remote computing device or server. In the case of a remote computing device, the remote computing device may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device.
The embodiment of the invention also provides a storage medium readable by the computing equipment in the method for reducing the interference, namely, the content is not lost after the power is cut off. The storage medium stores therein a software program comprising program code which, when executed on a computing device, when read and executed by one or more processors, implements any of the above aspects of embodiments of the invention in reducing interference.
Based on the same inventive concept, the embodiment of the present invention further provides a method for reducing interference, and since the method corresponds to the method for reducing interference in the embodiment of the present invention, and the principle of the method for solving the problem is similar to that of the device, the method can be implemented by referring to the implementation of the device, and repeated details are not repeated.
As shown in fig. 12, a flowchart of a method for reducing interference according to an embodiment of the present invention specifically includes the following steps;
step 1200, after detecting the RIM RS, the network side device determines the position information of the RIM RS in the current uplink and downlink switching period;
step 1210, the network side device determines target location information of the RIM RS in a subsequent uplink and downlink conversion period according to the location information;
step 1220, the network side device sends the target location information to a terminal, so that the terminal performs subsequent uplink signal sending according to the target location information.
Optionally, the sending, by the network side device, the target location information to a terminal includes:
the network side equipment sends the target position information to the terminal through DCI; or
And the network side equipment sends the target position information to the terminal through a high-level signaling.
Optionally, the method further includes:
the network side equipment sends a power control parameter value for determining the transmitting power of the terminal to the terminal;
and/or
And the network side equipment sends indication information for determining the transmission power to the terminal.
Based on the same inventive concept, the embodiment of the present invention further provides a method for reducing interference, and because the method corresponds to the method for reducing interference in the embodiment of the present invention, and the principle of the method for solving the problem is similar to that of the device, the implementation of the method may refer to the implementation of the device, and the repeated parts are not described again.
As shown in fig. 13, a flowchart of a method for reducing interference according to an embodiment of the present invention specifically includes the following steps:
step 1300, the terminal receives target position information of the RIM RS sent by the network side equipment;
step 1310, the terminal sends the subsequent uplink signal according to the target location information.
Optionally, the receiving, by the terminal, target location information of the RIM RS sent by the network side device includes:
the terminal acquires the target position information sent by the network side equipment by detecting DCI; or
And the terminal acquires the target position information sent by the network side equipment by detecting a high-level signaling.
Optionally, the terminal performs subsequent uplink signal transmission according to the target location information, including:
the terminal adjusts the transmitting power of the uplink signal on the target position resource corresponding to the target position information in the subsequent uplink and downlink conversion period; or
And the terminal sends an uplink signal on resources except the target position resource corresponding to the target position information in the subsequent uplink and downlink conversion period.
Optionally, the adjusting, by the terminal, the transmission power of the uplink signal on the target location resource corresponding to the target location information in the subsequent uplink and downlink conversion period includes:
the terminal adjusts the transmitting power of the uplink signal on the target position resource corresponding to the target position information according to the received power control parameter value sent by the network side equipment; or
And the terminal adjusts the transmitting power of the uplink signal on the target position resource corresponding to the target position information according to the received indication information sent by the network side equipment.
Optionally, the adjusting, by the terminal according to the received indication information sent by the network side device, the transmission power of the uplink signal on the target location resource corresponding to the target location information includes:
if the terminal determines that the main interference is the interference of the uplink signal of the terminal on the RIM RS received by the network side equipment according to the indication information, the transmitting power of the uplink signal on the target position resource is adjusted to be lower than a set power threshold; or
And if the terminal determines that the main interference is the interference of the RIM RS received by the network side equipment on the uplink signal of the terminal according to the indication information, adjusting the transmitting power of the uplink signal on the target position resource to be higher than a set power threshold value.
Optionally, the terminal sends the uplink signal on a resource other than the target location resource corresponding to the target location information by the following method:
time division multiplexing, and/or frequency division multiplexing, and/or space division multiplexing.
The embodiment of the present invention further provides a method for sending scheduling information of uplink transmission resources to a terminal to reduce interference, as shown in fig. 14, which is another flow chart of the method for reducing interference provided in the embodiment of the present invention, specifically including the following steps:
1400, after detecting the RIM RS, the network side device determines the location information of the RIM RS in the current uplink and downlink switching period;
step 1410, the network side device determines resources scheduled to the terminal from the resources except the location resources corresponding to the location information;
step 1420, the network side device sends the scheduling information of the uplink transmission resource to the terminal according to the determined resource scheduled to the terminal.
According to the method, after the network side equipment detects the RIM RS, the position information of the RIM RS in the current uplink and downlink conversion period is determined, the network side equipment determines the resource scheduled to the terminal from the resources except the position resource corresponding to the position information, and sends the resource scheduling information to the terminal according to the resource scheduled to the terminal, so that when the terminal sends uplink signals in the subsequent uplink and downlink conversion period, the uplink signal scheduling is carried out according to the resource scheduling information sent by the network side equipment, and the network side equipment is ensured not to receive the uplink signals at the RIM RS receiving position when the terminal sends the uplink signals, so that the interference generated between the uplink signals and the RIM RS is reduced.
In the embodiment of the present invention, the uplink signal sent by the terminal includes, but is not limited to, part or all of the following:
PUCCH (Physical Uplink Control CHannel), PUSCH (Physical Uplink Shared CHannel), PRACH (Physical Random Access CHannel).
And when the network side equipment sends the resource scheduling information to the terminal, the network side equipment mainly sends the scheduling information of the uplink transmission resource to the terminal through the UL Grant.
Wherein, the scheduling information of the uplink transmission resource includes part or all of the following: time domain resource scheduling information, frequency domain position resource scheduling information and space domain resource scheduling information.
The location information includes some or all of the following: time slot position information, beam information and frequency domain position information; the invention is illustrated in detail by the following examples.
Example five: a time domain;
the network side device detects the RIM RS and determines the receiving time slot position information of the RIM RS, and the network side device schedules uplink time slot position resources other than the time slot position resources corresponding to the receiving time slot position information of the RIM RS to a terminal served by the network side device, so that the terminal performs uplink signal transmission on the uplink time slot position resources other than the time slot position resources corresponding to the receiving time slot position information of the RIM RS, and does not perform scheduling, that is, does not perform uplink signal transmission, on the time slot position resources corresponding to the receiving time slot position information of the RIM RS, as specifically shown in fig. 15;
because the transmission of the uplink signal is not carried out at the position of RIM RS receiving, the mutual interference between the RIM RS receiving and the terminal uplink signal is eliminated.
Example six: an airspace;
the method comprises the steps that network side equipment detects a RIM RS (radio access controller), determines a receiving beam of the RIM RS, and schedules spatial resources corresponding to other beams except the spatial resources corresponding to the receiving beam information of the RIM RS to a terminal served by the network side equipment, so that the terminal transmits uplink signals on the spatial resources corresponding to the beams except the spatial resources corresponding to the receiving beam of the RIM RS, and does not schedule the uplink resources on the receiving beam of the RIM RS, namely does not transmit the uplink signals;
because the transmission of the uplink signal is not carried out at the position of RIM RS receiving, the mutual interference between the RIM RS receiving and the terminal uplink signal is eliminated.
Example seven: a frequency domain;
the method comprises the steps that network side equipment detects a RIM RS and determines the receiving frequency domain position of the RIM RS, the network side equipment schedules frequency domain position resources corresponding to other frequency domain position information except the frequency domain position resource corresponding to the RIM RS receiving frequency domain position information to a terminal served by the network side equipment, so that the terminal carries out uplink signal transmission on the frequency domain position resources except the frequency domain position resource corresponding to the RIM RS receiving frequency domain position information, and does not schedule, namely does not carry out uplink signal transmission on the frequency domain position resource corresponding to the RIM RS receiving frequency domain position information;
because the transmission of the uplink signal is not carried out at the position of RIM RS receiving, the mutual interference between the RIM RS receiving and the terminal uplink signal is eliminated.
Example eight: time domain + frequency domain;
when the RIM RS is transmitted on only a fractional sub-band of one frequency domain (unlike the system bandwidth of 100MHz, only 20MHz is used for RIM RS transmission);
the network side equipment detects the RIM RS, determines the receiving time slot position information of the RIM RS and determines the frequency domain configuration information of the RIM RS, and dispatches the uplink time slot position resources except the time slot position resources corresponding to the receiving time slot position information of the RIM RS and other frequency domain position resources which do not receive the RIM RS on the receiving time slot position information of the RIM RS to a terminal served by the network side equipment so as to enable the terminal to transmit uplink signals; in the frequency domain sub band configured to receive the RIM RS, no uplink resource is scheduled on the location resource corresponding to the location information of the RIM RS, that is, no uplink signal transmission is performed, as shown in fig. 16 specifically;
because the transmission of the uplink signal is not carried out at the position of RIM RS receiving, the mutual interference between the RIM RS receiving and the terminal uplink signal is eliminated, all the undisturbed resources are utilized as far as possible, and the waste of the resources is reduced.
The embodiments of the present invention are not limited to the above embodiments, and because each embodiment is that the network side device determines the resource to be scheduled for the terminal according to the resource except the resource corresponding to the location information, the situations are similar and are not described in detail.
It should be noted that, when determining resources scheduled to a terminal, the embodiment of the present invention may determine from resources corresponding to all location information, and therefore the determined resource scheduling information may include resources corresponding to the location information;
further, when sending scheduling information of uplink transmission resources to the terminal according to the determined resources scheduled to the terminal, judging whether the scheduling information of the uplink transmission resources contains resources corresponding to the position information, if so, selecting the terminal for sending uplink signals by the network side equipment according to the determined terminal transmission power;
specifically, before the network side device selects a terminal for sending an uplink signal according to the determined terminal transmitting power, whether the terminal is a main interference is judged according to interference generated on the position information;
if the terminal is mainly interfered, the network side equipment selects the terminal with the transmitting power lower than the power threshold value to send the uplink signal according to the determined terminal transmitting power; or
If the terminal is not the main interference, the network side equipment selects the terminal with the transmitting power higher than the power threshold value to transmit the uplink signal according to the determined terminal transmitting power.
The network side equipment can send scheduling information of uplink transmission resources to a plurality of terminals, if the scheduling information of the uplink transmission resources sent to the terminals comprises position resources corresponding to the position information of the RIM RS, the uplink signals sent by the terminals and received on the position information of the RIM RS are determined, whether the terminals are mainly interfered is further judged, when the terminals are determined not to be mainly interfered, the terminals with the uplink transmission high power higher than a threshold value are scheduled, and otherwise, the terminals with the uplink transmission power lower than the threshold value are scheduled; if the scheduling information of the uplink transmission resource sent to the terminal does not include the location resource corresponding to the location information of the RIM RS, the network side device may select the terminal at will, or may select the terminal according to the configuration, for example, configure to schedule the terminal whose uplink transmission power is lower than the threshold when the scheduling information of the uplink transmission resource does not include the location resource corresponding to the location information of the RIM RS; the method is realized by the configuration of the transmitting power of different terminals, does not need to configure a plurality of power control parameter values for the same terminal, and can reduce the interference between the RIM RS and the uplink signal.
For example, there are 10 terminals interacting with the network side device, and under the condition that all the initial transmission powers of the terminals are consistent, the terminal 1 is farthest away from the network side device, and because there is a loss, the network side device determines that the transmission power of the terminal 1 is lowest; the terminal 10 is closest to the network side device, so the network side device determines that the transmission power of the terminal 10 is the highest, and is determined by the network side device itself when scheduling the terminal.
When the network side equipment determines that the terminal is mainly interfered on the RIM RS receiving position information, the network side equipment schedules the terminal 1 on the RIM RS receiving position information; in the non-RIM RS receiving position, the network side device schedules a terminal with a general transmitting power, such as terminal 5, and the network side device determines that the transmitting power of terminal 5 is between terminal 1 and terminal 10.
In some possible embodiments, the various aspects of the interference reduction according to the embodiments of the present invention may also be implemented in the form of a program product, which includes program code for causing a computer device to perform the steps of the interference reduction method according to various exemplary embodiments of the present invention described in this specification, when the program code runs on the computer device.
The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium include: an electrical connection having one or more wires, a portable diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
A program product for data forwarding control according to an embodiment of the present invention may employ a portable compact disc read only memory (CD-ROM) and include program code, and may be run on a server device. However, the program product of the present invention is not limited thereto, and in this document, the readable storage medium may be any tangible medium containing or storing the program, which can be used by or in connection with an information transmission, apparatus, or device.
A readable signal medium may include a propagated data signal with readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A readable signal medium may also be any readable medium that is not a readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with a periodic network action system, apparatus, or device.
Program code embodied on a readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device, or entirely on the remote computing device or server. In the case of a remote computing device, the remote computing device may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device.
The embodiment of the invention also provides a storage medium readable by the computing equipment in the method for reducing the interference, namely, the content is not lost after the power is cut off. The storage medium has stored therein a software program comprising program code which, when read and executed by one or more processors, implements any of the above aspects of embodiments of the invention when reducing interference, when the program code is run on a computing device.
Based on the same inventive concept, the embodiment of the present invention further provides an apparatus for reducing interference, and since the apparatus corresponds to the apparatus corresponding to the method for reducing interference in the embodiment of the present invention, and the principle of the apparatus for solving the problem is similar to that of the method, the apparatus may be implemented by referring to the method, and repeated details are not repeated.
As shown in fig. 17, a structure diagram of another apparatus for reducing interference according to an embodiment of the present invention specifically includes: a processor 1700 and a transceiver 1710;
the processor 1700 is configured to: performing data transmission through the transceiver 1710, and determining the position information of the RIM RS in the current uplink and downlink conversion period after detecting the RIM RS;
determining resources scheduled to the terminal from resources except for the position resources corresponding to the position information;
and sending scheduling information of uplink transmission resources to the terminal according to the determined resources scheduled to the terminal.
Optionally, the processor 1700 is specifically configured to:
and sending the scheduling information of the uplink transmission resource to the terminal through an uplink scheduling Grant (UL Grant).
Optionally, the processor 1700 sends scheduling information of uplink transmission resources to the terminal, where the scheduling information includes part or all of the following:
time domain resource scheduling information, frequency domain position resource scheduling information and space domain resource scheduling information.
Specifically, as shown in fig. 18, an embodiment of the present invention further provides an apparatus for reducing interference, where the apparatus includes: at least one processing unit 1800 and at least one memory unit 1810, wherein the memory unit 1810 stores program code that, when executed by the processing unit 1800, causes the processing unit 1800 to perform any of the method steps described above for reducing interference.
The present invention is described above with reference to block diagrams and/or flowchart illustrations of methods, apparatus (systems) and/or computer program products according to embodiments of the invention. It will be understood that one block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, and/or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer and/or other programmable data processing apparatus, create means for implementing the functions/acts specified in the block diagrams and/or flowchart block or blocks.
Accordingly, the present invention may also be embodied in hardware and/or in software (including firmware, resident software, micro-code, etc.). Furthermore, the invention can take the form of a computer program product on a computer-usable or computer-readable storage medium having computer-usable or computer-readable program code embodied in the medium for use by or in connection with an instruction execution system. In the context of this document, a computer-usable or computer-readable medium may be any medium that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (24)

1. A method for reducing interference, the method comprising:
after detecting a remote interference management reference signal RIM RS, network side equipment determines the position information of the RIM RS in the current uplink and downlink conversion period;
the network side equipment determines target position information of the RIM RS in a subsequent uplink and downlink conversion period according to the position information;
the network side equipment sends the target position information to a terminal so that the terminal can send subsequent uplink signals according to the target position information; the terminal sends subsequent uplink signals according to the target position information, and the method comprises the following steps: the terminal adjusts the transmitting power of the uplink signal on the target position resource corresponding to the target position information in the subsequent uplink and downlink conversion period; or the terminal sends the uplink signal on the resources except the target position resource corresponding to the target position information in the subsequent uplink and downlink conversion period.
2. The method of claim 1, wherein the network side device sends the target location information to a terminal, and the method comprises:
the network side equipment sends the target position information to the terminal through Downlink Control Information (DCI); or
And the network side equipment sends the target position information to the terminal through a high-level signaling.
3. The method of claim 1, further comprising:
the network side equipment sends a power control parameter value for determining the transmitting power of the terminal to the terminal;
and/or
And the network side equipment sends indication information for determining the transmission power to the terminal.
4. A method for reducing interference, the method comprising:
the terminal receives target position information of the RIM RS sent by the network side equipment; wherein the target location information of the RIM RS is determined according to the following manner: after detecting a remote interference management reference signal RIM RS, network side equipment determines the position information of the RIM RS in the current uplink and downlink conversion period; the network side equipment determines target position information of the RIM RS in subsequent uplink and downlink conversion periods according to the position information;
the terminal sends subsequent uplink signals according to the target position information; the terminal sends subsequent uplink signals according to the target position information, and the method comprises the following steps: the terminal adjusts the transmitting power of the uplink signal on the target position resource corresponding to the target position information in the subsequent uplink and downlink conversion period; or the terminal sends the uplink signal on the resources except the target position resource corresponding to the target position information in the subsequent uplink and downlink conversion period.
5. The method of claim 4, wherein the receiving, by the terminal, the target location information of the RIM RS sent by the network side device comprises:
the terminal acquires the target position information sent by the network side equipment by detecting DCI; or
And the terminal acquires the target position information sent by the network side equipment by detecting a high-level signaling.
6. The method as claimed in claim 4, wherein the adjusting, by the terminal, the transmission power of the uplink signal on the target location resource corresponding to the target location information in the subsequent uplink/downlink switching period comprises:
the terminal adjusts the transmitting power of the uplink signal on the target position resource corresponding to the target position information according to the received power control parameter value sent by the network side equipment; or
And the terminal adjusts the transmitting power of the uplink signal on the target position resource corresponding to the target position information according to the received indication information sent by the network side equipment.
7. The method of claim 6, wherein the adjusting, by the terminal according to the received indication information sent by the network side device, the transmission power of the uplink signal on the target location resource corresponding to the target location information includes:
if the terminal determines that the main interference is the interference of the uplink signal of the terminal on the RIM RS received by the network side equipment according to the indication information, the transmitting power of the uplink signal on the target position resource is adjusted to be lower than a set power threshold; or
And if the terminal determines that the main interference is the interference of the RIM RS received by the network side equipment on the uplink signal of the terminal according to the indication information, adjusting the transmitting power of the uplink signal on the target position resource to be higher than a set power threshold.
8. The method of claim 4, wherein the terminal transmits uplink signals on resources other than the target location resource corresponding to the target location information by:
time division multiplexing, and/or frequency division multiplexing, and/or space division multiplexing.
9. A method for reducing interference, the method comprising:
after detecting a remote interference management reference signal RIM RS, network side equipment determines the position information of the RIM RS in the current uplink and downlink conversion period;
the network side equipment determines resources scheduled to the terminal from the resources except the position resources corresponding to the position information;
and the network side equipment sends scheduling information of uplink transmission resources to the terminal according to the determined resources scheduled to the terminal.
10. The method of claim 9, wherein the network side device sends resource scheduling information to the terminal, and the method includes:
and the network side equipment sends the scheduling information of the uplink transmission resource to the terminal through an uplink scheduling Grant (UL Grant).
11. The method of claim 9, wherein the network side device sends the scheduling information of the uplink transmission resource to the terminal, and the scheduling information includes part or all of the following:
time domain resource scheduling information, frequency domain position resource scheduling information and space domain resource scheduling information.
12. An apparatus for reducing interference, the apparatus comprising: a processor and a transceiver:
the processor is configured to: carrying out data transmission through the transceiver, and determining the position information of a remote interference management reference signal (RIM RS) in the current uplink and downlink conversion period after detecting the RIM RS;
determining target position information of the RIM RS in a subsequent uplink and downlink conversion period according to the position information;
sending the target position information to a terminal so that the terminal can send subsequent uplink signals according to the target position information; the terminal sends subsequent uplink signals according to the target position information, and the method comprises the following steps: the terminal adjusts the transmitting power of the uplink signal on the target position resource corresponding to the target position information in the subsequent uplink and downlink conversion period; or the terminal sends the uplink signal on the resources except the target position resource corresponding to the target position information in the subsequent uplink and downlink conversion period.
13. The device of claim 12, wherein the processor is specifically configured to:
sending the target position information to the terminal through Downlink Control Information (DCI); or
And sending the target position information to the terminal through a high-level signaling.
14. The device of claim 12, wherein the processor is further configured to:
sending a power control parameter value for determining the transmitting power of the terminal to the terminal;
and/or
And sending indication information for determining the transmission power to the terminal.
15. An apparatus for reducing interference, the apparatus comprising: a processor and a transceiver:
the processor is configured to: carrying out data transmission through the transceiver and receiving target position information of the RIM RS sent by the network side equipment; wherein the target location information of the RIM RS is determined according to the following manner: after detecting a remote interference management reference signal RIM RS, network side equipment determines the position information of the RIM RS in the current uplink and downlink conversion period; the network side equipment determines target position information of the RIM RS in subsequent uplink and downlink conversion periods according to the position information;
subsequent uplink signal sending is carried out according to the target position information; wherein, the sending of the subsequent uplink signal according to the target position information includes: adjusting the transmitting power of an uplink signal on a target position resource corresponding to the target position information in the subsequent uplink and downlink conversion period; or sending the uplink signal on resources except the target position resource corresponding to the target position information in the subsequent uplink and downlink conversion period.
16. The device of claim 15, wherein the processor is specifically configured to:
acquiring the target position information sent by the network side equipment by detecting DCI; or
And acquiring the target position information sent by the network side equipment by detecting a high-level signaling.
17. The device of claim 15, wherein the processor is specifically configured to:
adjusting the transmitting power of the uplink signal on the target position resource corresponding to the target position information according to the received power control parameter value sent by the network side equipment; or
And adjusting the transmitting power of the uplink signal on the target position resource corresponding to the target position information according to the received indication information sent by the network side equipment.
18. The device according to claim 17, wherein when the adjusting, according to the received indication information sent by the network side device, the transmission power of the uplink signal on the target location resource corresponding to the target location information is executed, the processor is specifically configured to:
if the main interference is determined to be the interference of the uplink signal per se on the RIM RS received by the network side equipment according to the indication information, adjusting the transmitting power of the uplink signal on the target position resource to be lower than a set power threshold value; or
And if the main interference is determined to be the interference of the RIM RS received by the network side equipment to the uplink signal of the network side equipment according to the indication information, adjusting the transmitting power of the uplink signal on the target position resource to be higher than a set power threshold.
19. The apparatus of claim 15, wherein the processor transmits uplink signals on resources other than the target location resource to which the target location information corresponds by:
time division multiplexing, and/or frequency division multiplexing, and/or space division multiplexing.
20. An apparatus for reducing interference, the apparatus comprising: a processor and a transceiver:
the processor is configured to: carrying out data transmission through the transceiver, and determining the position information of the RIM RS in the current uplink and downlink conversion period after detecting the RIM RS;
determining resources scheduled to the terminal from resources except for the position resources corresponding to the position information;
and sending scheduling information of uplink transmission resources to the terminal according to the determined resources scheduled to the terminal.
21. The device of claim 20, wherein the processor is specifically configured to:
and sending the scheduling information of the uplink transmission resource to the terminal through an uplink scheduling Grant (UL Grant).
22. The apparatus of claim 20, wherein the processor transmits scheduling information of the uplink transmission resource to the terminal including part or all of:
time domain resource scheduling information, frequency domain position resource scheduling information and space domain resource scheduling information.
23. An apparatus for reducing interference, the apparatus comprising: at least one processing unit and at least one memory unit, wherein the memory unit stores program code which, when executed by the processing unit, causes the processing unit to carry out the steps of the method according to any one of claims 1 to 3, the steps of the method according to any one of claims 4 to 8, and the steps of the method according to any one of claims 9 to 11.
24. A computer-readable medium, on which a computer program is stored, which program, when being executed by a processor, carries out the steps of a method according to any one of claims 1 to 3, of a method according to any one of claims 4 to 8, or of a method according to any one of claims 9 to 11.
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