WO2018040894A1 - Procédé de traitement d'interférence, station de base, et support de stockage informatique - Google Patents

Procédé de traitement d'interférence, station de base, et support de stockage informatique Download PDF

Info

Publication number
WO2018040894A1
WO2018040894A1 PCT/CN2017/097176 CN2017097176W WO2018040894A1 WO 2018040894 A1 WO2018040894 A1 WO 2018040894A1 CN 2017097176 W CN2017097176 W CN 2017097176W WO 2018040894 A1 WO2018040894 A1 WO 2018040894A1
Authority
WO
WIPO (PCT)
Prior art keywords
downlink
service
downlink service
uplink
interference
Prior art date
Application number
PCT/CN2017/097176
Other languages
English (en)
Chinese (zh)
Inventor
郑毅
侯雪颖
沈晓冬
童辉
Original Assignee
中国移动通信有限公司研究院
中国移动通信集团公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中国移动通信有限公司研究院, 中国移动通信集团公司 filed Critical 中国移动通信有限公司研究院
Publication of WO2018040894A1 publication Critical patent/WO2018040894A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0231—Traffic management, e.g. flow control or congestion control based on communication conditions
    • H04W28/0236—Traffic management, e.g. flow control or congestion control based on communication conditions radio quality, e.g. interference, losses or delay
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows

Definitions

  • the present invention relates to the field of wireless communications, and in particular, to an interference processing method, a base station, and a computer storage medium.
  • the uplink and downlink cross-slot interference will be further superimposed on the basis of the inter-cell interference.
  • the base station communicates with the terminal in the cell in which it is formed.
  • the base station transmits a downlink signal to the terminal, and the terminal transmits an uplink signal to the base station.
  • the downlink signal carries a downlink service;
  • the uplink signal carries an uplink service.
  • the interference between the base stations in FIG. 1 and the interference between the terminals are cross-slot interference caused by mutual interference of uplink and downlink signals of different cells.
  • the interference from the terminal to the terminal is generally less affected.
  • the base station since the base station is usually deployed at a higher position, most of the base station and the base station are empty and unobstructed, and the environment is close to direct, the propagation loss is small, and the power of the base station is large. Therefore, the interference between the base stations and the base stations is large. Therefore, the interference from the base station to the base station has become an interference problem that needs to be solved urgently.
  • embodiments of the present invention are directed to providing an interference processing method and a base station and a computer storage medium, at least partially solving the above interference problem.
  • a first aspect of the embodiments of the present invention provides an interference processing method, including:
  • the downlink control information transmission After the downlink control information transmission is completed, it is monitored whether a neighboring cell sends a downlink service indication during a guard interval of the transmission frame to form a monitoring result.
  • a second aspect of the embodiments of the present invention provides an interference processing method, including:
  • the downlink service indication is sent, where the downlink service indication is used to notify the neighboring cell, the downlink service transmission status of the local cell.
  • a third aspect of the embodiments of the present invention provides a base station, including:
  • the monitoring unit is configured to: after the downlink control information transmission is completed, monitor whether a neighboring cell sends a downlink service indication during a guard interval of the transmission frame to form a monitoring result;
  • the processing unit is configured to process, according to the monitoring result, interference of the downlink service corresponding to the downlink service indication to the uplink service reception of the local cell.
  • a fourth aspect of the embodiments of the present invention provides a base station, including:
  • the sending unit is configured to send the downlink control information, and send the downlink service indication after the downlink control information is sent and before the downlink service is sent, where the downlink service indication is used to notify the neighboring cell, the downlink service of the local cell Transmission status.
  • a fifth aspect of the embodiments of the present invention provides a computer storage medium, where the computer storage medium stores computer executable instructions for performing an interference processing method provided by one or more of the above technical solutions.
  • a sixth aspect of the embodiments of the present invention provides a base station, where the base station includes:
  • a transceiver configured to send and receive information
  • a memory configured to store information
  • a processor coupled to the transceiver and the memory, respectively, configured to implement an interference processing method provided by one or more technical solutions by executing computer executable code stored in the memory.
  • the downlink service base station sends a downlink service indication before the downlink service is transmitted, and informs the neighboring cell of the uplink service base station that has the uplink service, and pays attention to avoiding, eliminating, and/or suppressing.
  • Mutual interference between uplink and downlink services thereby reducing interference and improving communication quality.
  • FIG. 1 is a schematic diagram of a cross-slot interference caused by a base station and a terminal during communication
  • FIG. 2 is a schematic flowchart of an interference processing method according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of a transmission frame according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic structural diagram of another transmission frame according to an embodiment of the present disclosure.
  • FIG. 5 is a schematic flowchart of another interference processing method according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of a base station according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of another base station according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic flowchart diagram of still another interference processing method according to an embodiment of the present invention.
  • this embodiment provides an interference processing method, including:
  • Step S110 After completing the downlink control information transmission, during the guard interval of the transmission frame, it is monitored whether a neighboring cell sends a downlink service indication to form a monitoring result.
  • Step S120 The interference of the downlink service corresponding to the downlink service indication to the uplink service reception of the local cell is processed according to the monitoring result.
  • an interference processing method may be applied to an uplink service base station or a non-downlink service base station that needs to perform uplink service reception.
  • the non-downlink service base station is a base station that does not need to perform downlink service transmission at present, and may include an uplink service base station and an idle base station that does not currently receive services.
  • FIG. 3 shows the frame structure of the transmission frame in the embodiment.
  • the transmission frame includes a downlink control channel, a traffic channel, an uplink control channel, and a guard interval GP.
  • the GP is generally disposed between the downlink channel and the uplink channel, and is used for conversion of the base station from the downlink transmission state to the uplink reception state.
  • the GP may be disposed between a downlink control channel and an uplink traffic channel; the GP may also be disposed between a downlink traffic channel and an uplink control channel.
  • the traffic channel may include a downlink traffic channel for transmitting downlink traffic and/or an uplink traffic channel for transmitting uplink traffic.
  • downlink control information is transmitted on the downlink control channel; and uplink traffic and/or downlink traffic can be flexibly transmitted on the traffic channel. And generally transmitting uplink control information on the uplink control channel.
  • the transmission frame can be further divided into an uplink service transmission frame and a downlink service transmission frame.
  • the service signal in this embodiment may also be a hybrid service channel, where the mixed traffic channel is partially used for uplink service transmission in a transmission subframe corresponding to the traffic channel, and part of It is used for downlink service transmission.
  • the traffic channel is a hybrid traffic channel, a transition gap is also set in the time-frequency resource corresponding to the traffic channel of the transmission frame, so as to be converted between the downlink transmission state and the uplink reception state of the base station.
  • the base station transmitting the downlink service transmits the downlink service channel, and transmits the downlink service indication in the guard interval corresponding to the transmission frame before transmitting the downlink service.
  • the downlink service base station sends the downlink service indication within a guard interval that the downlink service transmission frame corresponds to the uplink service transmission frame.
  • the downlink service indication may include The service indication or the downlink service signal is sent, so that after receiving the signal, the non-downlink service base station considers that there is a base station to transmit the downlink service.
  • the non-downlink service base station monitors whether the base station of the neighboring cell has sent a downlink service indication within a guard interval after the downlink control channel is transmitted by using the downlink control channel in the transmission frame.
  • the downlink service indication may be used to indicate downlink service transmission status information of the neighboring cell base station, and the like.
  • step S120 the reception of the uplink service of the local cell is processed according to the monitoring result of the downlink service indication.
  • the transmission time of the uplink service may be adjusted according to the monitoring result. For example, the nth subframe of the neighboring cell base station transmits the downlink service. To avoid cross-slot interference, the cell may schedule the transmission in the mth subframe. Uplink traffic, wherein the n is not equal to the m. In this way, interference avoidance is achieved by differentiating the transmission subframes.
  • Processing the receiving of the uplink service of the local cell in step S220 may include determining, according to the monitoring result, a communication resource used by an uplink service of the local cell, where the communication resource may include a time resource, a frequency resource, an air resource, and/or Symbol resource.
  • the time resources here, for example, the interference avoidance achieved by the transmission time staggering mentioned above, by the staggering of the frequency domain resources, obviously avoid the cross interference caused by the same frequency; and by spatial multiplexing of the uplink service and the downlink service, for example Use beams in different directions to avoid interference. For example, by adjusting the antenna reception weight of the uplink service base station, the null trap beam is aligned with the incoming wave direction of the downlink traffic interference, thereby achieving the effect of interference suppression.
  • the symbol resources may include communication symbols such as orthogonal codes used in communication.
  • the downlink service interference may also be processed by using interference cancellation.
  • interference cancellation For example, Interference Rejection Combining (IRC) is used.
  • IRC Interference Rejection Combining
  • the interference cancellation mode interferes with the downlink service.
  • the uplink service reception quality is obviously improved, thereby reducing the communication error rate and improving the communication accuracy rate.
  • the method further includes:
  • the step S110 includes:
  • the transmission frame further includes a transition interval, where the transition interval T can be used for the uplink service base station to complete the transition from the downlink transmission state to the uplink reception state. Since the base station is switched from the downlink transmission state to the uplink reception state, it is not possible to receive the downlink service indication sent by the neighboring cell well, so as to ensure that the downlink service indication is successfully received, the cross-slot interference is reduced, and the communication quality is improved. As shown in FIG. 4, the downlink service base station is generally required to send a downlink service indication, which cannot be transmitted only in the transition interval T, but needs to be sent in a guard interval corresponding to the uplink service transmission frame to ensure that the non-downlink service base station can receive Go to the downlink service indication.
  • the step S110 may include:
  • the non-downlink service base station may detect whether there is a downlink service indication, and may send the signal energy and/or channel information of the downlink service indication, without parsing the information content of the signal of the downlink service indication, for example, If the signal energy is detected, it can be considered that there is a neighboring cell.
  • the line service is sent, and then the channel information is used to determine the channel that the neighboring cell will occupy when transmitting the downlink service. For example, it is detected that the neighboring cell sends a downlink service indication on channel A, and the neighboring cell may be considered to send a downlink service indication on channel A.
  • Channel A herein may include frequency domain resources and/or spatial domain resources and/or symbol resources of the channel.
  • the frequency domain resources may include a spectrum employed, and the air domain resources may include a beam direction.
  • the symbol resources may include a communication code or the like, for example, an orthogonal communication code used in code division multiple access or the like.
  • the non-downlink service base station may listen through the guard interval, and not only detects whether there is a downlink service indication transmission, but also obtains information content of the downlink service indication, where the information is obtained.
  • the content may include transmission parameters of the downlink service.
  • the transmission parameters herein may include information of communication resources used when the downlink service is transmitted, and the like.
  • the sending parameter includes at least one of length information, beam information, encoding indication information, and traffic load information, where the length information includes a transmission duration of the downlink service and/or a number of transmission subframes.
  • the beam information includes a beam direction and/or a beam identifier of the downlink service;
  • the coding indication information includes a coded modulation mode of the downlink service;
  • the service load information includes a load quantity of the downlink service.
  • different beam identifiers correspond to different beams, and different beams may have different beam directions or different beam energies.
  • the length information indicates that the downlink service occupies the first P1 subframes in one transmission frame for downlink traffic transmission, so that the uplink service base station can transmit the P2 subframes in the transmission frame in order to avoid interference.
  • the uplink service base station may select to completely avoid in the transmission frame, does not transmit uplink service data, and waits for the next transmission frame. Then carry on the uplink service transmission.
  • it is usually combined with other parameters such as the delay requirement of the uplink service to avoid or not.
  • interference cancellation and/or interference suppression can be used to mitigate interference and improve communication quality.
  • the step S220 may include: determining, according to the monitoring result, whether a neighboring cell sends the downlink service during a time when the current cell performs the uplink service reception; when a neighboring cell is present When the downlink service is transmitted in the time when the mobile station performs the uplink service reception, the uplink service reception is performed by using interference cancellation, interference suppression, and/or evasion. In this embodiment, it is determined whether the downlink cell is sent by the neighboring cell according to whether the downlink service indication is received. If the neighboring cell has a downlink service and the uplink cell sends the uplink service, in this embodiment, Uplink service reception is performed by means of interference cancellation, interference suppression, and/or evasion.
  • the circumvention here may include the aforementioned evasion.
  • the interference cancellation here may include receiving the signal first, and after completing the signal reception, using a certain interference cancellation process to eliminate the interference signal in the received signal.
  • the interference suppression is such that, when the signal is received, the reception of the interference signal is suppressed as much as possible according to the direction of the source of the interference signal, etc., thereby achieving the effect of interference suppression.
  • the avoidance here may include avoiding interference between the two signals by means of avoidance.
  • the above three methods are signal processing methods capable of mitigating interference, thereby reducing interference and improving communication quality.
  • the step S220 may include: performing the uplink service reception in a preset manner when no downlink cell sends the downlink service during the time when the local cell performs the uplink service reception. .
  • the uplink service scheduling and transmission may be randomly performed in the current transmission frame, or the original scheduling mode may be used to perform uplink service scheduling and transmission.
  • the preset mode here may refer to any scheduling mode in which the scheduling mode of the neighboring cell is different when the downlink service is sent, for example, the default mode.
  • the uplink service reception is performed by using interference cancellation, interference suppression, and/or evasion.
  • the method includes: when a neighboring cell performs the uplink service connection in the local cell Obtaining an interference parameter when the downlink service is sent, and scheduling the uplink service according to the interference parameter to eliminate, suppress, and/or evade the interference of the downlink service.
  • the interference parameter herein may directly include the transmission parameter of the downlink service of the neighboring cell; and/or the parameter such as the degree of interference to the uplink service of the cell and/or the degree of interference estimated according to the transmission parameter.
  • the scheduling manner is determined according to the interference parameter, where the scheduling may include at least one of scheduling of used communication resources, scheduling of code modulation mode, and signal power scheduling.
  • the scheduling of the communication resources may include scheduling of frequency domain resources, scheduling of airspace resources, and scheduling of resources such as communication codes.
  • the scheduling of the uplink service of the cell may change. Therefore, the cell will change the scheduling of the uplink service to avoid and/or reduce the interference of the downlink service to the uplink service. Communication quality.
  • this embodiment provides an interference processing method, including:
  • Step S210 Send downlink control information.
  • Step S220 After the downlink control information is sent and before the downlink service is sent, send a downlink service indication, where the downlink service indication is used to notify the neighboring cell of the downlink service transmission status of the local cell.
  • the interference processing method in this embodiment is applied to the downlink service base station.
  • the downlink service base station does not directly enter the downlink service transmission. Rather, the downlink service indication is sent before the downlink service transmission, and the downlink service indication informs the base station of the neighboring cell that the base station has downlink service transmission, so that the base station of the neighboring cell can avoid the difference by means of evasion/interference cancellation.
  • the interference of the uplink and downlink services between the cells so as to ensure the communication quality of the neighboring cells, and also avoid the interference of the neighboring cells to the traffic of the cell regardless of the signal transmission of the cell, thereby improving the communication of the cell.
  • the transmission frame described in this embodiment may be a downlink service transmission frame as shown in FIGS. 3 and 4.
  • the structure of the transmission frame can be referred to the foregoing embodiment, and will not be described in detail herein.
  • the downlink signal indicates that the neighboring cell can notify the neighboring cell of the downlink service transmission in the current transmission frame by using the downlink indication signal.
  • the downlink indication signal may not be sent, and a downlink service indication indicating that there is no downlink service transmission may also occur.
  • the step S220 may include:
  • the downlink service indication is sent;
  • the switching interval is used by the uplink service base station to complete the handover from the downlink sending state to the uplink receiving state.
  • a transition interval is also set in the transmission frame, and the conversion is used for the time when the uplink service base station performs the downlink transmission state to the uplink state reception. If the downlink service indication is sent directly within the time, the uplink service indication is lost because the uplink service base station has not completed the state. If the downlink service indication is not received, the uplink service may be randomly scheduled or the default mode may be used for uplink service scheduling. Therefore, the problem that the uplink and downlink services between different cells interfere with each other causes a problem of poor communication quality.
  • the transition interval T in the downlink traffic transmission frame is aligned with the transition interval T in the uplink traffic transmission frame. The alignment here can include the same start time and end time.
  • the transition interval may also be a reserved interval in the downlink service transmission frame. Generally, the downlink traffic transmission frame does not perform the transition from the downlink transmission state to the uplink reception state within the transition interval.
  • the method further includes:
  • a predetermined signal is transmitted to the terminal during a transition interval of the transmission frame; wherein the predetermined signal is used to implement a predetermined function.
  • the predetermined signal is transmitted in the conversion interval, where the predetermined signal may include a downlink channel sounding signal, a discovery signal, a synchronization signal, a demodulation signal, and the like, which are transmitted to the terminal of the local cell.
  • the predetermined signal may include a downlink channel sounding signal, a discovery signal, a synchronization signal, a demodulation signal, and the like, which are transmitted to the terminal of the local cell.
  • the downlink channel sounding signal It is convenient to receive the terminal after receiving it to achieve the estimation of the downlink channel.
  • the transmission of the synchronization signal may facilitate synchronization between the base station and the terminal of the local cell.
  • the predetermined signal may be various downlink signals that perform a predetermined function. In this way, the communication resources of the transition interval of the downlink service transmission frame are fully utilized, thereby improving the effective utilization of the communication resources and avoiding waste of resources caused by no signal transmission during the conversion interval.
  • the predetermined signal may also be a downlink control channel, that is, the downlink control channel is transmitted in a downlink control channel of the non-transport frame, and the transmission of the control information is completed.
  • the step S220 may include:
  • the terminal of the own cell receives a predetermined function according to the received predetermined preference.
  • the predetermined signal herein may include the aforementioned discovery signal, downlink channel sounding signal, synchronization signal, demodulation signal, and the like.
  • the base station of the neighboring cell receives the predetermined signal, and may determine, according to the predetermined signal, whether the base station of the local cell has a transmission parameter of a downlink service transmission and/or a downlink service.
  • the base station of the neighboring cell receives the predetermined signal, and determines whether the downlink service transmission of the local cell may interfere with the transmission of the uplink service according to the transmission power of the predetermined signal, and may further determine the downlink according to the information content carried in the predetermined signal.
  • the sending parameters of the service it is preferable that the terminal corresponding to the downlink service base station performs a predetermined function according to the transmission parameter of the predetermined signal; for example, performing channel estimation and the like according to the signal power of the predetermined signal.
  • the base station of the neighboring cell acquires information such as the transmission status of the downlink service of the local cell according to the signal content of the predetermined signal.
  • the step S220 may include: sending the downlink service indication within a guard interval that the downlink service transmission frame corresponds to the uplink service transmission frame.
  • the transmission frame includes an uplink service transmission frame and a downlink service transmission frame.
  • the downlink service indication is sent on the downlink service transmission frame, and is sent in this embodiment.
  • the downlink service transmission is sent in the protection interval of the downlink service transmission frame corresponding to the uplink service transmission frame, that is, the transmission priority of the downlink service indication is not earlier than the protection interval of the downlink service transmission frame, and the protection is not exceeded.
  • the interval may be incorrect, so that the uplink service base station cannot correctly receive the downlink service indication, and the problem of poor communication quality caused by interference suppression, cancellation, and/or evasion of the uplink and downlink services between the base stations cannot be smoothly performed.
  • this embodiment provides a base station, including:
  • the monitoring unit 110 is configured to: after the downlink control information transmission is completed, monitor whether a neighboring cell sends a downlink service indication during a guard interval of the transmission frame, and form a monitoring result;
  • the processing unit 120 is configured to process, according to the monitoring result, interference of the downlink service corresponding to the downlink service indication to the uplink service reception of the local cell.
  • the base station in this embodiment may be a base station of a cell, such as an evolved base station eNB, and other base stations for mobile communication.
  • the base station may be an uplink service base station that performs uplink service transmission in the current transmission frame and/or a non-downlink service base station that does not perform downlink service transmission.
  • the monitoring unit 110 may correspond to a receiving antenna, and may receive the downlink service indication by using a receiving antenna, thereby forming a monitoring result.
  • the processing unit 120 can correspond to various processors or processing circuits having information processing functions within the base station.
  • the processor may include various signal processing structures such as a central processing unit CPU, a microprocessor MCU, a digital signal processor DSP, a programmable array PLC, or an application processor AP.
  • the processing circuit can include an application specific integrated circuit ASIC or the like.
  • the processor or the processing circuit can complete the processing operation by executing the predetermined instruction to avoid and/or reduce mutual interference between the uplink and downlink services and improve communication quality. For details of the downlink service indication, refer to the foregoing embodiment, which is not repeated here.
  • the base station further includes:
  • a conversion unit configured to perform a transfer of the transmission frame after completing downlink control information transmission Converting from a downlink transmission state to the uplink reception state within a change interval
  • the monitoring unit 110 is configured to: after the completion of the uplink receiving state transition, monitor whether a neighboring cell sends the downlink service indication in the guard interval after the transition interval, to form the monitoring result.
  • the converting unit may correspond to the foregoing processor or processing circuit, and may control an operating state of the receiving antenna and the transmitting antenna of the base station, for example, converting from a downlink sending state to an uplink receiving state, at least including turning on the receiving antenna. Make the receiving antenna run. Of course, operations such as turning off the downlink transmitting antenna may also be included.
  • the conversion unit may also correspond to a structure such as a switch controller of the receiving antenna and the transmitting antenna, and realize state transition through the switch of the antenna.
  • the state transition is not limited to the switching state of the antenna, and includes a matching processor such as information forming, switching of an operating state of a storage resource for storing information, and the like.
  • the listening unit 110 will listen to the downlink service indication after completing the state transition to ensure smooth listening of the downlink service indication.
  • the monitoring unit 110 is configured to: during the guard interval, monitor whether a neighboring cell sends a downlink service indication, acquire signal energy and/or channel information of the downlink service indication; and/or And monitoring, in the guard interval, whether a neighboring cell sends a downlink service indication, and acquiring, by the downlink service indication, a sending parameter of the downlink service, where the sending parameter provides a parameter for performing the processing of the interference. .
  • the monitoring unit 110 may only monitor whether there is a signal for transmitting a downlink service indication, a downlink service indication channel information, and the like, and does not pay attention to specific internal power of the downlink service indication; and may not only receive the downlink service indication, but also extract The specific content of the downlink service indication (the specific content may include a transmission parameter), thereby facilitating signal interference processing of the processing unit 120.
  • the transmission parameter includes at least one of length information, beam information, coding indication information, and traffic load information, where the length information includes a transmission duration of the downlink service and/or a number of transmission subframes;
  • the beam information includes a beam direction and/or a beam identifier of the downlink service;
  • the coding indication information includes a coded modulation mode of the downlink service, and the service load information includes a load quantity of the downlink service.
  • the processing unit 110 is configured to determine, according to the monitoring result, whether a neighboring cell sends the downlink service during a time when the local cell performs the uplink service reception; when a neighboring cell is present When the downlink service is sent in the time when the current cell receives the uplink service, the uplink service reception is performed by using interference cancellation, interference suppression, and/or evasion.
  • the processing unit 110 is configured to acquire an interference parameter when a neighboring cell sends the downlink service in the time when the local cell performs the uplink service reception, and obtain an interference parameter according to the interference parameter.
  • the scheduling of the uplink service is to eliminate, suppress, and/or circumvent the interference of the downlink service.
  • the processing unit 110 may determine, according to the monitoring result, whether the neighboring cell has a downlink service transmission in the current transmission frame, and then use the corresponding scheduling mode to schedule the uplink service of the local cell, so as to reduce the uplink and downlink.
  • Business interference improve communication quality.
  • the processing unit 110 is configured to perform the uplink service reception in a preset manner when no downlink cell sends the downlink service in the time when the local cell performs the uplink service reception.
  • the preset mode here can be the default mode or the original inheritance mode, and the receiving of the uplink service is performed, and the scheduling adjustment is not required, and high-quality signal reception can also be realized.
  • this embodiment provides a base station, including:
  • the sending unit 210 is configured to send the downlink control information, and send the downlink service indication after the downlink control information is sent and before the downlink service is sent, where the downlink service indication is used to notify the neighboring cell, the downlink of the local cell Business transmission status.
  • the base station includes a sending unit 210, and the sending unit may correspond to a transmitting antenna of the base station or the like.
  • the base station may be a downlink service base that needs to send downlink services in the current transmission frame. station.
  • the base station may further include an information processing structure forming a downlink service indication, such as a processor or a processing circuit.
  • the structure of the processor or the processing circuit herein can be referred to the foregoing base station embodiment, and is not repeated here. In general, it can be a CPU, an MCU, a DSP, an AP, a PLC, or an ASIC.
  • uplink and downlink interference can be reduced, and communication quality is improved.
  • the sending unit 210 is configured to send the downlink service indication after sending the downlink control information and waiting for a transition interval of the transmission frame, where the switching interval is used for uplink
  • the service base station completes the handover from the downlink transmission state to the uplink reception state.
  • the sending unit 210 specifically sends the downlink service indication at a transition interval of the transmission frame, so as to ensure correct reception of the uplink service base station, and ensure smooth progress of the uplink and downlink interference processing.
  • the transmitting unit 210 is further configured to transmit a predetermined signal to the terminal within a transition interval of the transmission frame; wherein the predetermined signal is used to implement a predetermined function.
  • the sending unit 210 performs the transmission of the predetermined signal in the conversion interval, and utilizes the time-frequency resource corresponding to the conversion interval, thereby improving the effective utilization of the communication resource.
  • the sending unit 210 is configured to send the downlink service indication bearer on a predetermined signal, where the sending parameter of the predetermined signal is further used to implement a predetermined function.
  • the predetermined function reduces the number of base station signal transmissions, reduces power consumption, and reduces signal transmission, thereby reducing the probability of mutual interference between signals in a wireless environment and reducing signaling overhead.
  • the sending unit 210 is configured to send the downlink service indication within a guard interval that the downlink service transmission frame corresponds to the uplink service transmission frame.
  • the downlink service indication is sent in the time corresponding to the protection interval of the uplink service transmission frame, so that the correct reception of the uplink service base station can be ensured, thereby ensuring the avoidance and elimination of uplink and downlink interference and improving the communication quality.
  • An embodiment of the present invention provides a computer storage medium, where the computer storage medium stores computer executable instructions, where the computer executable instructions are used to perform an interference processing method provided by one or more of the foregoing technical solutions, for example, executable The interference processing method shown in FIGS. 2, 5, and 8.
  • the computer storage medium may include various computer storage media such as a mobile hard disk, an optical disk, a flash disk, and the like, and may be a non-transitory storage medium.
  • the embodiment further provides a base station, where the base station includes:
  • a transceiver configured to send and receive information
  • a memory configured to store information
  • the processor is respectively connected to the transceiver and the memory, and is configured to execute the memory executable code stored by the memory, for example, the interference processing method shown in FIG. 2, FIG. 5 and FIG.
  • the transceiver provided in the embodiment of the present invention may correspond to a transceiver antenna of a base station.
  • the memory can include various computer storage media, such as non-transitory storage media.
  • the storage medium, computer program, etc. computer executable code may be included in the embodiment of the present invention.
  • the processor can be a central processing unit, a microprocessor, a digital signal processor, an application processor, a programmable array or application processor, an application specific integrated circuit, or the like.
  • the base station of the downlink service sends a downlink service indication between the downlink control channel and the traffic channel, where the downlink service indication includes a downlink channel indicator or a signal.
  • the base station informs the receiver of the current service transmission as a downlink transmission by using the downlink indication.
  • the uplink service base station needs to transmit the downlink control channel in the first half of the transmission frame structure, and then needs to transmit the uplink service. Therefore, a guard interval (GP) needs to be added between the two parts.
  • the downlink service indication needs to be included in the length of time of the GP.
  • the uplink base station monitors the downlink service indication of the neighboring cell in the GP. If the downlink service indication is heard, the subsequent uplink service will receive the downlink interference of the neighboring cell, and a certain interference avoidance mechanism is needed.
  • the base station of any non-downlink service can judge the downlink service of the cell by monitoring the downlink service indication.
  • the downlink service indication includes service information of the local cell, and uses a fixed transmission power.
  • the neighboring cell can determine the interference direction, the interference strength, the interference cell ID, and the like by using the downlink service indication of other cells heard in the GP.
  • Step S1 The downlink service base station (BTS1) and the uplink service base station (BTS2) both send downlink control information to the respective terminals, including S1a: BTS1 sends downlink service control information to the downlink service terminal UE1, and BTS2 sends a downlink control channel to the uplink service terminal. UE2.
  • Step S2 The BTS1 sends a downlink service indication, where the downlink service indication is continued after the downlink control information transmission is completed.
  • Step S3 The BTS2 monitors in the GP, which may include: after completing the downlink control information transmission, entering the GP, and converting into an uplink service receiving state.
  • Step S4 The BTS2 determines the interference beam direction, the downlink interference power, the cell identifier ID information, and the like according to the downlink service indication, and adopts an interference avoidance measure. For example, the BTS2 monitors whether there is a downlink service indication of the neighboring cell in the GP. If the downlink service indication from the neighboring cell is received, the incoming wave direction, the downlink interference power, the interference cell ID, and the like are determined.
  • Step 5 Includes step S5a and step S5b.
  • the step S5a the BTS1 performs downlink service transmission.
  • Step S5b BTS2 performs uplink service transmission, for example, 1) adopting a zero-sink reception mode, and/or 2) using interference cancellation to eliminate BST1 interference.
  • it may include: listening according to the GP stage
  • the downlink interference indication information is sent to perform interference avoidance and elimination. For example, accepting nulls according to the direction of the incoming wave, or performing interference cancellation based on the interference measurement information in the GP.
  • the uplink service base station (BTS2) needs to undergo a downlink-to-uplink transition (T), there is no way for BTS2 to hear any information during this time. Then, before the downlink indicator, it is necessary to wait for the time of the reserved time S1, where S1 is not less than T.
  • T is the aforementioned switching interval.
  • the BTS1 needs to send the downlink service indication information after the interval S1. After the time T, the BTS2 enters the uplink receiving state, and can capture downlink service indication information sent by other cells.
  • the S1 can be used for the transmission of the downlink service, or can be used as the terminal-specific downlink service indication, and the control information is transmitted to all the terminals.
  • the terminal here may include an uplink terminal under BTS2. It can also be used for downlink traffic transmission within the BTS1 cell.
  • the length of the GP needs to be greater than or equal to the length of the downlink service indication, and the downlink service indication information of the neighboring cell can be completely received.
  • the BTS2 is based on the incoming wave direction monitored in the GP.
  • the BTS2 adjusts the multi-antenna reception weight to align the null beam to the direction of the interference, thereby achieving the suppression effect.
  • the BTS2 monitors the interference information of the neighboring cell in the GP, including energy and channel information.
  • the BTS2 performs baseband interference cancellation according to the interference information acquired by using the downlink interference indication.
  • the downlink service indication includes 1) the number of consecutive downlink transmissions in subsequent consecutive periods; 2) and/or downlink beam shaping direction information, such as a precoding index, Beam ID information (beam id); and/or downlink traffic load information of the current subframe and or subsequent subframes.
  • the base station 1 includes, in the downlink service indication information, the number of subframes or length information of the downlink service scheduled, and/or the subsequent downlink service beam information.
  • the base station 2 adjusts the downlink and downlink service direction of the subsequent scheduling of the cell by monitoring the subsequent downlink service length information included in the downlink service indication of the base station in the GP, and reduces uplink and downlink interference.
  • the base station 2 adjusts the scheduling information of the subsequent services by monitoring the beam information of the subsequent downlink services, where the scheduling manner includes uplink and downlink services, modulation and coding modes, and beamforming directions.
  • Downlink channel estimation or transmission of demodulated signals is performed at the reserved time S1 and the location of the downlink traffic indication.
  • the reserved time S1 here corresponds to the aforementioned conversion time.
  • the BTS1 may perform the transmission of the downlink channel sounding symbol/signal by using the location indicated by the S1 and/or the downlink service, or may include the transmission of the downlink demodulation symbol/signal, or both.
  • the downlink control channel is transmitted at the location of S1 and/or downlink traffic indication.
  • the BTS1 can transmit the downlink control channel using S1 and or downlink traffic indication locations.
  • the downlink service is transmitted in the downlink service subframe (or other transmission unit concept, such as a time slot).
  • the downlink service indication by introducing a downlink service indication, it is convenient to detect the uplink and downlink service status of the neighboring cell. It is judged whether there is cross-slot interference, and the downlink service indication can be used to obtain interference information to assist in interference suppression or deletion.
  • the uplink base station By transmitting the downlink service indication in the time corresponding to the uplink GP, the uplink base station can be enabled. Obtaining the service indication of the downlink base station and the interference information of the base station to the base station, and effectively performing information interaction between the base stations.
  • the disclosed apparatus and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner such as: multiple units or components may be combined, or Can be integrated into another system, or some features can be ignored or not executed.
  • the coupling, or direct coupling, or communication connection of the components shown or discussed may be indirect coupling or communication connection through some interfaces, devices or units, and may be electrical, mechanical or other forms. of.
  • the units described above as separate components may or may not be physically separated, and the components displayed as the unit may or may not be physical units, that is, may be located in one place or distributed to multiple network units; Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing module, or each unit may be separately used as one unit, or two or more units may be integrated into one unit; the above integration
  • the unit can be implemented in the form of hardware or in the form of hardware plus software functional units.
  • the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed.
  • the foregoing storage medium includes: a mobile storage device, a read-only memory (ROM), a random access memory (RAM), and a RAM (Random Access Memory).
  • ROM read-only memory
  • RAM random access memory
  • RAM Random Access Memory
  • the downlink service base station sends a downlink service indication before the downlink service is transmitted, and informs the neighboring cell of the uplink service base station that is sent by the uplink service, and pays attention to avoiding, eliminating, and/or suppressing mutual interference between the uplink and downlink services, thereby reducing interference.
  • the base station that needs to send the downlink service uses the protection time interval of the transmission frame to send the downlink service indication, and the other base stations can perform the interference elimination of the uplink service reception by monitoring, which has the characteristics of simple implementation and can be widely applied in the industry.

Landscapes

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

Abstract

Les modes de réalisation de l'invention concernent un procédé de traitement d'interférence, et une station de base. Le procédé de traitement d'interférence consiste à : déterminer, dans un intervalle de garde de transmission de trame, et après l'accomplissement d'une transmission d'informations de commande de liaison descendante, si une commande de service de liaison descendante est transmise dans une cellule voisine, de sorte à générer un résultat de détermination ; et, d'après le résultat de la détermination, traiter une interférence provenant d'un service de liaison descendante correspondant à la commande de service de liaison descendante, et affectant une réception de service de liaison montante dans une cellule actuelle. Les modes de réalisation de l'invention concernent également un support de stockage informatique.
PCT/CN2017/097176 2016-08-31 2017-08-11 Procédé de traitement d'interférence, station de base, et support de stockage informatique WO2018040894A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201610799053.3 2016-08-31
CN201610799053.3A CN107787012B (zh) 2016-08-31 2016-08-31 干扰处理方法及基站

Publications (1)

Publication Number Publication Date
WO2018040894A1 true WO2018040894A1 (fr) 2018-03-08

Family

ID=61299998

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/097176 WO2018040894A1 (fr) 2016-08-31 2017-08-11 Procédé de traitement d'interférence, station de base, et support de stockage informatique

Country Status (2)

Country Link
CN (1) CN107787012B (fr)
WO (1) WO2018040894A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019237801A1 (fr) * 2018-06-13 2019-12-19 中兴通讯股份有限公司 Procédé, dispositif et appareil d'atténuation de brouillage inter-cellules, et support de stockage informatique

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101119144A (zh) * 2006-08-01 2008-02-06 鼎桥通信技术有限公司 一种减少上行同步信道干扰的方法、系统与装置
US20140321422A1 (en) * 2011-09-26 2014-10-30 Lg Electronics Inc. Method and apparatus for transmitting a signal in a wireless communication system
CN104205673A (zh) * 2012-04-13 2014-12-10 英特尔公司 异构网络中的自适应ul-dl tdd配置
CN104982057A (zh) * 2013-02-13 2015-10-14 株式会社Ntt都科摩 无线基站、用户终端以及无线通信方法
CN105164948A (zh) * 2013-04-05 2015-12-16 华为技术有限公司 用于小区间干扰协调的方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8767616B2 (en) * 2010-12-07 2014-07-01 Marvell International Ltd. Synchronized interference mitigation scheme for heterogeneous wireless networks
US9351289B2 (en) * 2011-06-06 2016-05-24 Lg Electronics Inc. Method for transmitting uplink control information and user equipment, and method for receiving uplink control information and base station
CN103428712B (zh) * 2012-05-16 2016-08-10 华为技术有限公司 一种侦听方法和节点
CN103945389A (zh) * 2013-01-17 2014-07-23 华为技术有限公司 干扰处理方法及设备
CN105323854B (zh) * 2014-08-03 2019-09-06 上海朗帛通信技术有限公司 一种laa干扰避免的方法和装置
CN105721376B (zh) * 2014-12-05 2019-06-14 中国移动通信集团公司 基于tdd传输模式的非授权频谱干扰避免方法及基站

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101119144A (zh) * 2006-08-01 2008-02-06 鼎桥通信技术有限公司 一种减少上行同步信道干扰的方法、系统与装置
US20140321422A1 (en) * 2011-09-26 2014-10-30 Lg Electronics Inc. Method and apparatus for transmitting a signal in a wireless communication system
CN104205673A (zh) * 2012-04-13 2014-12-10 英特尔公司 异构网络中的自适应ul-dl tdd配置
CN104982057A (zh) * 2013-02-13 2015-10-14 株式会社Ntt都科摩 无线基站、用户终端以及无线通信方法
CN105164948A (zh) * 2013-04-05 2015-12-16 华为技术有限公司 用于小区间干扰协调的方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019237801A1 (fr) * 2018-06-13 2019-12-19 中兴通讯股份有限公司 Procédé, dispositif et appareil d'atténuation de brouillage inter-cellules, et support de stockage informatique

Also Published As

Publication number Publication date
CN107787012B (zh) 2021-10-29
CN107787012A (zh) 2018-03-09

Similar Documents

Publication Publication Date Title
US10652939B2 (en) Method and apparatus for device-to-device communication
US10314059B2 (en) Communication method in mobile communication system using unlicensed frequency band and apparatus therefor
CN109496456B (zh) 非授权频谱上的信道检测方法、装置和存储介质
CN111837354B (zh) 辅小区的小区激活的方法及其电子设备
CA3059806C (fr) Procede d'acces aleatoire et de reponse, dispositif terminal et dispositif reseau
KR20160121441A (ko) 단말간 직접 통신 방법 및 장치
JP2019516329A (ja) 方法、システムおよび装置
WO2013107139A1 (fr) Appareil et procédé de traitement d'interférence en duplex intégral
US20150050941A1 (en) Wireless communication system, communication method, base station, and communication terminal
US20190254043A1 (en) Apparatuses, methods and computer programs for implementing fairness and complexity-constrained a non-orthogonal multiple access (noma) scheme
CN108377536A (zh) 一种无线通信的方法和装置
WO2019137450A1 (fr) Procédé et appareil de communication
US11750345B2 (en) Electronic device, wireless communication method and computer readable medium
CN105794245A (zh) 用于处理ue之间的上行链路至下行链路干扰的基站、装置以及其中的方法
US9596070B2 (en) Methods and apparatuses for device-to-device communication
CN115250513A (zh) 一种移动性管理方法及通信装置
WO2018028675A1 (fr) Procédé, appareil, dispositif, système et support de stockage de configuration de signal d'accès aléatoire
JP5596452B2 (ja) 無線基地局および無線通信方法
CN112584443A (zh) 辅助小区链路恢复请求传输
CN106792776B (zh) 一种波束处理方法和基站
WO2018040894A1 (fr) Procédé de traitement d'interférence, station de base, et support de stockage informatique
CN117044273A (zh) 用于无线通信的电子设备和方法、计算机可读存储介质
WO2015061924A1 (fr) Procédé et appareil de suppression de brouillage entre cellules
CN117397173A (zh) 信息传输方法、设备及存储介质
WO2020147086A1 (fr) Procédé de transmission de signal, appareil associé, et système

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17845196

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC ( EPO FORM 1205A DATED 21/06/2019 )

122 Ep: pct application non-entry in european phase

Ref document number: 17845196

Country of ref document: EP

Kind code of ref document: A1