Interference coordination method, device and system

Abstract

The embodiment of the present application discloses an interference coordination method, device and system to achieve interference avoidance while improving the utilization rate of spectrum bandwidth. The method includes: the first TDD system and the second TDD system are adjacent asynchronous TDD systems, the first TDD system uses the first designated frequency domain resource to communicate with the UE in the first time slot, and the second TDD system uses the second designated frequency domain resource to communicate with the UE in the second time slot, and the first designated frequency domain resource is different from the second designated frequency domain resource; or the first TDD system modifies the time slot configuration of the first time slot corresponding to the third time slot when communicating with the UE in the first time slot, and the second TDD system modifies the time slot configuration of the second time slot corresponding to the fourth time slot when communicating with the UE in the second time slot, the first time slot and the second time slot have the same time domain position and different functions, and the first TDD system is not adjusted in other time slots except the first time slot and the third time slot, and the second TDD system is not adjusted in other time slots except the second time slot and the fourth time slot.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of communications, and in particular to an interference coordination method, device, and system. Background Art

[0002] A time-division duplexing (TDD) communication system (referred to as a TDD system) uses different time slots on the same frequency for both the uplink (UL) and downlink (DL). TDD systems can dynamically or semi-statically configure time slot allocation based on service type to meet varying uplink and downlink asymmetric service requirements. The time slot allocation refers to the ratio of time slots in a radio frame used to transmit uplink and downlink service data.

[0003] For scenarios where adjacent countries or regions use the same frequency band or a similar frequency band, if the first TDD system and the second TDD system are adjacent systems, and the time slot ratio of the first TDD system is different from the time slot ratio of the second TDD system, the first TDD system and the second TDD system are called adjacent asynchronous TDD systems. Since the time slot ratio of the first TDD system is different from the time slot ratio of the second TDD system, the first TDD system is used to transmit uplink service data in certain time slots (such as the first time slot), and the second TDD system is used to transmit downlink service data in these time slots, resulting in interference between the uplink service data transmitted by the first TDD system and the downlink service data transmitted by the second TDD system in the first time slot.

[0004] In order to avoid interference caused by the uplink and downlink scheduling between the first TDD system and the second TDD system due to different time slot ratios, the existing technology avoids interference by having each TDD system use different frequency domain resources at the geographical boundary between the first TDD system and the second TDD system. For example, the first TDD system uses a portion of the spectrum bandwidth (such as the first TDD system uses 60M of the 100M spectrum bandwidth) as a usage resource, and the second TDD system uses another portion of the spectrum bandwidth (such as the second TDD system uses the remaining 40M of the 100M spectrum bandwidth) as a usage resource. In this way, since each TDD system can only use part of the spectrum resources, the available spectrum bandwidth is reduced, resulting in low utilization of the spectrum bandwidth of each TDD system. Summary of the Invention

[0005] The embodiments of the present application provide an interference coordination method, apparatus, and system to avoid interference while improving the utilization of spectrum bandwidth.

[0006] To achieve the above objectives, the embodiments of the present application adopt the following technical solutions.

[0007] According to a first aspect of an embodiment of the present application, an interference coordination method is provided, the method comprising: applying to a communication system including a first TDD system and a second TDD system, the first TDD system using a first frequency domain resource, the second TDD system using a second frequency domain resource, the first frequency domain resource and the second frequency domain resource being at least partially the same frequency domain resource, comprising: a network device of the first TDD system using a first designated frequency domain resource in a first time slot in a first radio frame to communicate with a user equipment UE, and the network device of the first TDD system using the first frequency domain resource in other time slots of the first radio frame except the first time slot to communicate with the UE. The first designated frequency domain resource belongs to the first frequency domain resource, and the first designated frequency domain resource is different from the second designated frequency domain resource. The second designated frequency domain resource is a frequency domain resource used by the network device of the second TDD system to communicate with the UE in a second time slot in a second radio frame. The second designated frequency domain resource belongs to the second frequency domain resource. The time domain position of the second time slot in the second radio frame is the same as the time domain position of the first time slot in the first radio frame. The second time slot and the first time slot have different functions. In the embodiment of the present application, the network equipment of the first TDD system uses the first designated frequency domain resources in the first time slot in the first wireless frame to communicate with the user equipment UE, which can effectively avoid interference between the first TDD system and the second TDD system. At the same time, the network equipment of the first TDD system uses the first frequency domain resources in other time slots of the first wireless frame except the first time slot to communicate with the UE, which can effectively improve the utilization of the spectrum. Therefore, the embodiment of the present application improves the utilization of the spectrum bandwidth while avoiding interference.

[0008] Based on the method described in the first aspect, the second time slot and the first time slot have different functions, specifically: the first time slot is used for the network equipment of the first TDD system to receive the uplink signal sent by the UE in the first time slot, and the second time slot is used for the network equipment of the second TDD system to send the downlink signal to the UE in the second time slot; or, the first time slot is used for the network equipment of the first TDD system to send the downlink signal to the UE in the first time slot, and the second time slot is used for the network equipment of the second TDD system to receive the uplink signal sent by the UE in the second time slot.

[0009] Based on the method described in the first aspect, the network equipment of the first TDD system receives the first characteristic sequence sent by the network equipment of the second TDD system in the first radio frame, and the first characteristic sequence is used to characterize the device information and interference management reference signal of the network equipment of the second TDD system. The network equipment of the first TDD system monitors the average interference value corresponding to the first characteristic sequence based on the device information and the interference management reference signal. When the average interference value corresponding to the first characteristic sequence is greater than the first threshold, the network equipment of the first TDD system uses the first designated frequency domain resource in the first time slot in the first radio frame to communicate with the user equipment UE. In an embodiment of the present application, when the network equipment of the first TDD system receives the first characteristic sequence and monitors that the interference value of the first characteristic sequence is greater than the first threshold, the network equipment of the first TDD system automatically activates the interference coordination function.

[0010] In one possible design, the method further includes: the network equipment of the first TDD system monitors the interference value of the PUSCH channel, and when the interference value of the PUSCH channel is greater than a second threshold, triggering the network equipment of the first TDD system to send a second characteristic sequence in a time slot in the first radio frame, the second characteristic sequence is used to trigger the network equipment of the second TDD system to communicate with the user equipment UE using the second designated frequency domain resources in the second time slot in the second radio frame. In this embodiment of the present application, when the network equipment of the first TDD system detects that the interference value of the PUSCH channel is greater than the second threshold, the operation of triggering the second characteristic sequence is triggered to facilitate the reception monitoring of the network equipment of other TDD systems, thereby realizing an automatic triggering function.

[0011] In the second aspect, the present application provides an interference coordination method, which is applied to a communication system including a first TDD system and a second TDD system, wherein the first TDD system uses a first time slot configuration, and the method includes: when the network equipment of the first TDD system communicates with the UE in the first time slot in the first radio frame, the logical channel on the first time slot or the symbol in the first time slot is not scheduled, and the time slot configuration of the third time slot corresponding to the first time slot is modified, the modified time slot configuration of the third time slot is different from the first time slot configuration, and the network equipment of the first TDD system uses the first time slot configuration to communicate with the UE in other time slots, and the other time slots are time slots other than the first time slot and the third time slot in the first radio frame. Among them, the time domain position of the first time slot in the first radio frame is the same as the time domain position of the second time slot in the second radio frame, the second time slot is the time slot in which the network equipment of the second TDD system communicates with the UE in the second radio frame, and the functions of the first time slot and the second time slot are different. In the embodiment of the present application, when the network equipment of the first TDD system communicates with the user equipment UE in the first time slot in the first wireless frame, the logical channel on the first time slot or the symbol in the first time slot is not scheduled, and the time slot configuration of the third time slot corresponding to the first time slot is modified, which can effectively avoid interference between the first TDD system and the second TDD system. At the same time, the network equipment of the first TDD system uses the first time slot configuration to communicate with the UE in other time slots of the first wireless frame except the first time slot, which can effectively improve the utilization of the spectrum. Therefore, the embodiment of the present application improves the utilization of the spectrum bandwidth while achieving interference avoidance.

[0012] Based on the method described in the first aspect, the second time slot and the first time slot have different functions, specifically: the first time slot is used for the network equipment of the first TDD system to receive the uplink signal sent by the UE in the first time slot, and the second time slot is used for the network equipment of the second TDD system to send the downlink signal to the UE in the second time slot; or, the first time slot is used for the network equipment of the first TDD system to send the downlink signal to the UE in the first time slot; the second time slot is used for the network equipment of the second TDD system to receive the uplink signal sent by the UE in the second time slot.

[0013] Based on the method described in the first aspect, the network equipment of the first TDD system receives the first characteristic sequence sent by the network equipment of the second TDD system in a time slot in the first wireless frame, and the first characteristic sequence is used to characterize the device information and interference management reference signal of the network equipment of the second TDD system. The network equipment of the first TDD system monitors the average interference value corresponding to the first characteristic sequence based on the device information and the interference management reference signal. When the average interference value corresponding to the first characteristic sequence is greater than the first threshold value, and when the network equipment of the first TDD system communicates with the UE in the first time slot in the first wireless frame, the logical channel on the first time slot or the symbol in the first time slot is not scheduled, and the time slot configuration of the third time slot corresponding to the first time slot is modified. In an embodiment of the present application, when the network equipment of the first TDD system receives the first characteristic sequence and detects that the interference value of the first characteristic sequence is greater than the first threshold value, the network equipment of the first TDD system automatically activates the interference coordination function.

[0014] In one possible design, the method further includes: the network equipment of the first TDD system monitors the interference value of the PUSCH channel, and when the interference value of the PUSCH channel is greater than a second threshold, triggering the network equipment of the first TDD system to send a second characteristic sequence on the first radio frame, the second characteristic sequence being used to trigger the network equipment of the second TDD system to communicate with the user equipment UE using the modified time slot configuration in the second time slot of the second radio frame. In this embodiment of the present application, when the network equipment of the first TDD system detects that the interference value of the PUSCH channel is greater than the second threshold, the operation of triggering the second characteristic sequence to occur is triggered to facilitate the reception monitoring of the network equipment of other TDD systems, thereby realizing an automatic triggering function.

[0015] In a third aspect, an interference coordination method is provided, which is a combination of the first and second aspects. The technical effects of the third aspect can be found in the technical effects of any possible design of the first or second aspect, and will not be described in detail.

[0016] In a fourth aspect, an interference coordination system is provided, comprising a first network device and a second network device, wherein the first network device uses first frequency domain resources and the second network device uses second frequency domain resources, wherein the first frequency domain resources and the second frequency domain resources are at least partially identical. The system comprises: the first network device is configured to communicate with a user equipment (UE) using a first designated frequency domain resource in a first time slot in a first radio frame, and the first network device uses the first frequency domain resource in time slots other than the first time slot in the first radio frame for communication with the UE, wherein the first designated frequency domain resource belongs to the first frequency domain resource. The second network device is configured to communicate with the UE using a second designated frequency domain resource in a second time slot in a second radio frame, and the second network device uses the second frequency domain resource in time slots other than the second time slot in the second radio frame for communication with the UE, wherein the second designated frequency domain resource belongs to the second frequency domain resource. The first designated frequency domain resource and the second designated frequency domain resource are different; the time domain position of the first time slot in the first radio frame is the same as the time domain position of the second time slot in the second radio frame, and the first time slot and the second time slot have different functions. In the embodiment of the present application, the first network device uses the first designated frequency domain resources in the first time slot in the first radio frame to communicate with the user equipment UE, and the second network device uses the second designated frequency domain resources in the second time slot in the second radio frame to communicate with the user equipment UE, which can effectively avoid interference between the first TDD system and the second TDD system. At the same time, the first network device uses the first frequency domain resources in other time slots of the first radio frame except the first time slot to communicate with the UE, and the second network device uses the second frequency domain resources in other time slots of the second radio frame except the second time slot to communicate with the UE, which can effectively improve the utilization of the spectrum. Therefore, the embodiment of the present application improves the utilization of the spectrum bandwidth while avoiding interference.

[0017] In a fifth aspect, an interference coordination system is provided, comprising a first network device and a second network device, wherein the first network device uses a first time slot configuration and the second network device uses a second time slot configuration, comprising: the first network device is configured to, when communicating with a UE in a first time slot in a first radio frame, not schedule a logical channel in the first time slot or a symbol in the first time slot, and to modify the time slot configuration of a third time slot corresponding to the first time slot, wherein the modified time slot configuration of the third time slot is different from the first time slot configuration. The first network device is configured to communicate with the UE using the first time slot configuration in a first other time slot, wherein the first other time slot is a time slot other than the first time slot and the third time slot in the first radio frame. The second network device is configured to, when communicating with the UE in a second time slot in a second radio frame, not schedule a logical channel in the second time slot or a symbol in the second time slot, and to modify the time slot configuration of a fourth time slot corresponding to the second time slot, wherein the modified time slot configuration of the fourth time slot is different from the second time slot configuration. The second network device is configured to communicate with the UE using a second time slot configuration in a second other time slot, where the second other time slot is a time slot other than the second time slot and the fourth time slot in the second radio frame. The time domain position of the first time slot in the first radio frame is the same as the time domain position of the second time slot in the second radio frame, and the first time slot and the second time slot have different functions. The embodiments of the present application improve spectrum bandwidth utilization while achieving interference avoidance.

[0018] In a sixth aspect, an interference coordination device is provided, which is applied to a communication system including a first TDD system and a second TDD system, wherein the first TDD system uses a first frequency domain resource, and the second TDD system uses a second frequency domain resource, and the first frequency domain resource and the second frequency domain resource are at least partially the same frequency domain resource, including: a communication unit, for a network device of the first TDD system to communicate with a user equipment UE using a first designated frequency domain resource in a first time slot in a first radio frame, and the network device of the first TDD system to communicate with the UE using the first frequency domain resource in other time slots of the first radio frame except the first time slot; wherein the first designated frequency domain resource belongs to the first frequency domain resource, and the first designated frequency domain resource is different from the second designated frequency domain resource, the second designated frequency domain resource is the frequency domain resource used by the network device of the second TDD system to communicate with the UE in the second time slot in the second radio frame, the second designated frequency domain resource belongs to the second frequency domain resource, the time domain position of the second time slot in the second radio frame is the same as the time domain position of the first time slot in the first radio frame, and the functions of the second time slot and the first time slot are different.

[0019] Based on the device described in the sixth aspect, the functions of the second time slot and the first time slot are different, specifically: in the first time slot, the network equipment of the first TDD system receives the uplink signal sent by the UE in the first time slot; in the second time slot, the network equipment of the second TDD system sends the downlink signal to the UE in the second time slot; or, in the first time slot, the network equipment of the first TDD system sends the downlink signal to the UE in the first time slot; in the second time slot, the network equipment of the second TDD system receives the uplink signal sent by the UE in the second time slot.

[0020] In one possible design, the communication unit includes: a transmitting subunit, configured for a network device of a first TDD system to receive, in a first radio frame, a first characteristic sequence transmitted by a network device of a second TDD system, the first characteristic sequence being used to characterize device information and an interference management reference signal of the network device of the second TDD system; a monitoring subunit, configured for the network device of the first TDD system to monitor an average interference value corresponding to the first characteristic sequence based on the device information and the interference management reference signal; and a communicating subunit, configured for the network device of the first TDD system to communicate with a user equipment (UE) using a first designated frequency domain resource in a first time slot in a first radio frame when the average interference value corresponding to the first characteristic sequence is greater than a first threshold.

[0021] In another possible design, the apparatus further includes: a monitoring unit, configured for the network device of the first TDD system to monitor an interference value of a PUSCH channel. A triggering unit, configured to trigger the network device of the first TDD system to transmit a second signature sequence in a time slot in a first radio frame when the interference value of the PUSCH channel is greater than a second threshold, wherein the second signature sequence is used to trigger the network device of the second TDD system to communicate with the user equipment (UE) using a second designated frequency domain resource in a second time slot in a second radio frame.

[0022] Among them, the technical effects brought about by the design method of the sixth aspect can be referred to the technical effects brought about by the possible design of the first aspect mentioned above, and will not be repeated here.

[0023] In the seventh aspect, an interference coordination device is provided, which is applied to a communication system including a first TDD system and a second TDD system, wherein the first TDD system uses a first time slot configuration, including: a modification unit, which is used for the network equipment of the first TDD system to communicate with the UE in the first time slot in the first radio frame, not to schedule the logical channel on the first time slot or the symbol in the first time slot, and to modify the time slot configuration of the third time slot corresponding to the first time slot, wherein the modified time slot configuration of the third time slot is different from the first time slot configuration; and a communication unit, which is used for the network equipment of the first TDD system to communicate with the UE using the first time slot configuration in other time slots, and the other time slots are time slots other than the first time slot and the third time slot in the first radio frame; wherein the time domain position of the first time slot in the first radio frame is the same as the time domain position of the second time slot in the second radio frame, and the second time slot is the time slot in which the network equipment of the second TDD system communicates with the UE in the second radio frame, and the functions of the first time slot and the second time slot are different.

[0024] Based on the device described in the seventh aspect, the functions of the second time slot and the first time slot are different, specifically: in the first time slot, the network equipment of the first TDD system receives the uplink signal sent by the UE in the first time slot; in the second time slot, the network equipment of the second TDD system sends the downlink signal to the UE in the second time slot; or, in the first time slot, the network equipment of the first TDD system sends the downlink signal to the UE in the first time slot; in the second time slot, the network equipment of the second TDD system receives the uplink signal sent by the UE in the second time slot.

[0025] Based on the device described in the seventh aspect, the modification unit includes: a receiving subunit, which is used for the network equipment of the first TDD system to receive the first characteristic sequence sent by the network equipment of the second TDD system in a time slot in the first wireless frame, and the first characteristic sequence is used to characterize the equipment information and interference management reference signal of the network equipment of the second TDD system; a monitoring subunit, which is used for the network equipment of the first TDD system to monitor the average interference value corresponding to the first characteristic sequence according to the equipment information and the interference management reference signal; a modification subunit, which is used for not scheduling the logical channel on the first time slot or the symbol in the first time slot when the average interference value corresponding to the first characteristic sequence is greater than the first threshold and when the network equipment of the first TDD system communicates with the UE in the first time slot in the first wireless frame, and to modify the time slot configuration of the third time slot corresponding to the first time slot.

[0026] In one possible design, the device also includes: a monitoring unit, used for the network equipment of the first TDD system to monitor the interference value of the PUSCH channel; a triggering unit, used to trigger the network equipment of the first TDD system to send a second characteristic sequence on the first wireless frame when the interference value of the PUSCH channel is greater than a second threshold, and the second characteristic sequence is used to trigger the network equipment of the second TDD system to communicate with the user equipment UE using the modified time slot configuration in the second time slot in the second wireless frame.

[0027] Among them, the technical effects brought about by the design method of the seventh aspect can be referred to the technical effects brought about by the possible design of the second aspect mentioned above, and will not be repeated here.

[0028] In an eighth aspect, a network device is provided, comprising: a processor and a memory, the memory being coupled to the processor, the memory being used to store computer program code, the computer program code comprising computer instructions, and when the processor reads the computer instructions from the memory, the network device executes the interference coordination method described in the first aspect or any possible design of the above aspects.

[0029] In a ninth aspect, a computer program product is provided. When the computer program product runs on a computer, the computer is enabled to execute the interference coordination method described in the first aspect or any possible design of the above aspects.

[0030] In a tenth aspect, a computer-readable storage medium is provided, comprising computer instructions, which, when executed on a terminal, enable the network device to execute the interference coordination method described in the first aspect or any possible design of the above aspects.

[0031] In the eleventh aspect, a chip system is provided, comprising one or more processors. When the one or more processors execute instructions, the one or more processors execute the interference coordination method described in the first aspect or any possible design of the above aspects.

[0032] Among them, the technical effects brought about by any design method in the eighth to eleventh aspects can refer to the technical effects brought about by the possible design of the first aspect mentioned above, and will not be repeated here.

[0033] In the twelfth aspect, a network device is provided, comprising: a processor and a memory, the memory being coupled to the processor, the memory being used to store computer program code, the computer program code comprising computer instructions, and when the processor reads the computer instructions from the memory, the network device executes the interference coordination method described in the second aspect or any possible design of the above aspects.

[0034] In a thirteenth aspect, a computer program product is provided. When the computer program product runs on a computer, it enables the computer to execute the interference coordination method described in the second aspect or any possible design of the above aspects.

[0035] In a fourteenth aspect, a computer-readable storage medium is provided, comprising computer instructions, which, when executed on a terminal, enable the network device to execute the interference coordination method described in the second aspect or any possible design of the above aspects.

[0036] In the fifteenth aspect, a chip system is provided, comprising one or more processors. When the one or more processors execute instructions, the one or more processors execute the interference coordination method described in the second aspect or any possible design of the above aspects.

[0037] Among them, the technical effects brought about by any design method in aspects 12 to 15 can refer to the technical effects brought about by the possible design of the second aspect mentioned above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0039] Figure 1 A schematic diagram of frequency stagger coordination of an existing TDD system;

[0040] Figure 2 A schematic diagram of the architecture of a communication system;

[0041] Figure 3 A schematic diagram of the composition of a communication system 300 provided in an embodiment of the present application;

[0042] Figure 4 A flowchart of an interference coordination method provided in an embodiment of the present application;

[0043] Figure 4a A flowchart of another interference coordination method provided in an embodiment of the present application;

[0044] Figure 4b A flowchart of another interference coordination method provided in an embodiment of the present application;

[0045] Figure 5 A flowchart of another communication method provided in an embodiment of the present application;

[0046] Figure 5a A flowchart of another interference coordination method provided in an embodiment of the present application;

[0047] Figure 5b A flowchart of another interference coordination method provided in an embodiment of the present application;

[0048] Figure 6 A flowchart of another communication method provided in an embodiment of the present application;

[0049] Figure 7 A schematic diagram of the composition of an interference coordination device provided in an embodiment of the present application;

[0050] Figure 8 A schematic diagram of the composition of another interference coordination device provided in an embodiment of the present application.

[0051] Figure 9 A schematic diagram of the composition of an interference coordination system provided in an embodiment of the present application;

[0052] Figure 10 A schematic diagram of the composition of another interference coordination system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0053] In a communication system, for a scenario where adjacent countries or regions use the same frequency band or a similar frequency band, if the first TDD system and the second TDD system are adjacent systems, and the time slot ratio of the first TDD system is different from the time slot ratio of the second TDD system, then the first TDD system and the second TDD system are called adjacent asynchronous TDD systems. Since the time slot ratio of the first TDD system is different from the time slot ratio of the second TDD system, the first TDD system is used to transmit uplink service data in certain time slots (such as the first time slot), and the second TDD system is used to transmit downlink service data in these time slots, resulting in interference between the uplink service data transmitted by the first TDD system and the downlink service data transmitted by the second TDD system in the first time slot.

[0054] In order to avoid interference in uplink and downlink scheduling caused by different time slot ratios between the first TDD system and the second TDD system, each TDD system uses different frequency domain resources at the geographical boundary between the first TDD system and the second TDD system to avoid interference.

[0055] For example, Figure 1As shown, at the geographical location boundary between the first TDD system and the second TDD system, the first network device of the first TDD system uses the first part of the spectrum bandwidth in the first spectrum bandwidth to send a downlink signal to the (User Experience, UX or UE for short), and the second network device of the second TDD system uses the second part of the spectrum bandwidth in the second spectrum bandwidth to receive the uplink signal transmitted by the UE. At a location far away from the geographical location boundary between the first TDD system and the second TDD system, the first network device of the first TDD system uses the first spectrum bandwidth to send a downlink signal to the UE, and the second network device of the second TDD system uses the second spectrum bandwidth to receive the uplink signal transmitted by the UE. Among them, the first spectrum bandwidth and the second spectrum bandwidth are at least partially the same spectrum bandwidth, and the first part of the spectrum bandwidth is different from the second part of the spectrum bandwidth.

[0056] Assume that the first spectrum bandwidth is the same as the second spectrum bandwidth, and both the first spectrum bandwidth and the second spectrum bandwidth are 100M, the first part of the spectrum bandwidth is 50M, the second part of the spectrum bandwidth is 100M-50M, and the first part of the spectrum bandwidth is different from the second part of the spectrum bandwidth. As shown in Table 1, at the geographical boundary between the first TDD system and the second TDD system, the first network device of the first TDD system uses a spectrum bandwidth of 50M to send a downlink signal to the UE, and the second network device of the second TDD system uses another spectrum bandwidth of 50M to receive the uplink signal transmitted by the UE. In Table 1, the time slot ratio of the first TDD system can be DDDSU (10:2:2), where 10:2:2 represents the number of uplink symbols in S slot: the number of protection symbols (Guard Period, GP) during the switching of uplink and downlink data transmission: the number of downlink symbols; the time slot ratio of the second TDD system can be DDDSUUDDDD (6:4:4), where 6:4:4 represents the number of uplink symbols in S slot: GP: the number of downlink symbols.

[0057] Table 1

[0058]

[0059] However, since each TDD system can only use part of the spectrum resources, the available spectrum bandwidth is reduced, resulting in low utilization of the spectrum bandwidth of each TDD system.

[0060] To solve this technical problem, an embodiment of the present application provides an interference coordination method, which is applied to a communication system including a first TDD system and a second TDD system, wherein the first TDD system uses a first frequency domain resource and the second TDD system uses a second frequency domain resource, and the first frequency domain resource and the second frequency domain resource are at least partially the same frequency domain resource. The method includes: a network device of the first TDD system uses a first designated frequency domain resource in a first time slot in a first radio frame to communicate with a user equipment UE, and the network device of the first TDD system uses the first frequency domain resource in other time slots of the first radio frame except the first time slot to communicate with the UE, wherein the first designated frequency domain resource belongs to the first frequency domain resource, and the first designated frequency domain resource is different from the second designated frequency domain resource, the second designated frequency domain resource is the frequency domain resource used by the network device of the second TDD system to communicate with the UE in the second time slot in the second radio frame, the second designated frequency domain resource belongs to the second frequency domain resource, the time domain position of the second time slot in the second radio frame is the same as the time domain position of the first time slot in the first radio frame, and the second time slot and the first time slot have different functions, thereby improving the utilization of the spectrum bandwidth while avoiding interference.

[0061] The interference coordination method provided in the embodiment of the present application is described below with reference to the accompanying drawings in the embodiment of the present application.

[0062] The interference coordination method provided in the embodiment of the present application can be applied to Figure 2 The communication system shown in Figure 2 As shown, the communication system may include a terminal UE, a first access network device and a second access network device. The access network device may include a network device. The network device may be a base station. Figure 1 This section introduces the network elements or devices involved in the shown architecture.

[0063] A terminal may be a device for implementing wireless communication functions, such as a terminal or a chip that can be used in a terminal. A terminal may be user equipment (UE), an access terminal, a terminal unit, a terminal station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a wireless communication device, a terminal agent, or a terminal device in a 5G network or a future evolved communication system. An access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device or a wearable device, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal used in industrial control, a wireless terminal used in self-driving vehicles, a wireless terminal used in remote medical care, a wireless terminal used in smart grids, a wireless terminal used in transportation safety, a wireless terminal used in smart cities, a wireless terminal used in smart homes, etc. The terminal may be mobile or fixed.

[0064] Access network equipment is mainly used to implement physical layer functions, resource scheduling and management, terminal access control, mobility management and other functions. The access network equipment can be a device that supports wired access or a device that supports wireless access. For example, the access network equipment can be an access network (AN) / radio access network (RAN), which is composed of multiple 5G-AN / 5G-RAN nodes. 5G-AN / 5G-RAN nodes can be: access point (AP), network side equipment (nodeB, NB), enhanced network side equipment (enhance nodeB, eNB), next generation network side equipment (NR nodeB, gNB), transmission reception point (TRP), transmission point (TP) or some other access node.

[0065] It should be noted that Figure 2This is just an example architecture diagram. Figure 2 In addition to the functional units shown in , the system may also include other functional network elements, such as: operation and management (O&M) network elements, etc., which are not limited in the embodiments of the present application. Figure 2 The names of the devices in the Figure 2 In addition to the names shown, each device can also be named other names, such as replacing them with network element names with the same or similar functions, without restriction.

[0066] in, Figure 2 The system shown can be a third generation partnership project (3GPP) communication system, such as a fourth generation (4G) communication system, a long term evolution (LTE) system, a fifth generation (5G) communication system or a new radio (NR) system, a next generation communication system, etc., or a non-3GPP communication system without restriction.

[0067] by Figure 2 The communication system shown is a 3G communication system as an example, and the above network equipment can be a network side equipment (nodeB, NB) in the 3G communication system. Figure 2 The communication system shown is a 4G communication system as an example, and the above network equipment can be an enhanced network side equipment (enhance nodeB, eNB) in the 4G communication system. Figure 2 The communication system shown is a 5G communication system as an example, and the above-mentioned network device can be a next-generation network side device (NR nodeB, gNB) in the 5G communication system.

[0068] Optionally, the relevant functions of the network device in the embodiments of the present application can be implemented by a single device, or by multiple devices together, or by one or more functional modules within a single device, and the embodiments of the present application do not specifically limit this. It is understood that the above functions can be network elements in a hardware device, software functions running on dedicated hardware, or a combination of hardware and software, or virtualized functions instantiated on a platform (e.g., a cloud platform).

[0069] In the specific implementation, Figure 2 All devices shown (such as network devices, etc.) can be used Figure 3 The structure shown, or including Figure 3 Parts shown. Figure 3This is a schematic diagram of the composition of a communication device 300 provided in an embodiment of the present application. The communication device 300 may include a processor 301 and a memory 304. Furthermore, the communication device 300 may also include a communication line 302 and a communication interface 303. The processor 301, the memory 304, and the communication interface 303 may be connected via the communication line 302.

[0070] Processor 301 can be a central processing unit (CPU), a general-purpose processor, a network processor (NP), a digital signal processor (DSP), a microprocessor, a microcontroller, a programmable logic device (PLD), or any combination thereof. Processor 301 can also be other devices with processing capabilities, such as circuits, devices, or software modules, without limitation.

[0071] The communication line 302 is used to transmit information between the components included in the communication device 300.

[0072] Communication interface 303 is used to communicate with other devices or other communication networks. Such other communication networks may be Ethernet, radio access networks (RAN), wireless local area networks (WLAN), etc. Communication interface 303 may be a module, circuit, transceiver, or any other device capable of communication.

[0073] The memory 304 is used to store instructions, where the instructions may be computer programs.

[0074] The memory 304 may be a read-only memory (ROM) or other type of static storage device that can store static information and / or instructions, or a random access memory (RAM) or other type of dynamic storage device that can store information and / or instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compact disc, laser disc, optical disc, digital versatile disc, Blu-ray disc), magnetic disk storage media, or other magnetic storage devices, without limitation.

[0075] It should be noted that the memory 304 can exist independently of the processor 301 or can be integrated with the processor 301. The memory 304 can be used to store instructions, program codes, or some data. The memory 304 can be located inside the communication device 300 or outside the communication device 300, without limitation.

[0076] The processor 301 is configured to execute instructions stored in the memory 304 to implement the service switching method provided in the following embodiments of the present application. For example, when the communication device 300 is a chip or system-on-chip in a network device, the processor 301 executes instructions stored in the memory 304 to implement the steps performed by the network device in the following embodiments of the present application.

[0077] In one example, the processor 301 may include one or more CPUs, such as Figure 3 CPU0 and CPU1 in.

[0078] As an optional implementation, the communication device 300 includes multiple processors, for example, Figure 3 In addition to the processor 301, a processor 307 may also be included.

[0079] As an optional implementation, the communication apparatus 300 further includes an output device 305 and an input device 306. For example, the input device 306 is a keyboard, a mouse, a microphone, a joystick, or the like, and the output device 305 is a display screen, a speaker, or the like.

[0080] It should be noted that the communication device 300 can be a desktop computer, a portable computer, a network server, a mobile phone, a tablet computer, a wireless terminal, an embedded device, a chip system or a computer with a Figure 3 In addition, Figure 3 The structure shown in the figure does not constitute a limitation on the communication device, except Figure 3 In addition to the components shown, the communication device may include more or fewer components than shown, or combine certain components, or arrange the components differently.

[0081] In the embodiment of the present application, the chip system can be composed of chips, or can include chips and other discrete devices.

[0082] In addition, the actions and terms involved in the various embodiments of this application can refer to each other without limitation. The message names or parameter names in the messages exchanged between the various devices in the embodiments of this application are only examples, and other names can also be used in specific implementations without limitation.

[0083] Below is Figure 2Taking the architecture shown in the figure as an example, the interference coordination method provided by the embodiment of the present application is described. Each network element in the following embodiment may have Figure 3 The components shown are not described in detail here. It should be noted that the message names or parameter names in the messages exchanged between the various devices in the embodiments of the present application are only examples, and other names can also be used in specific implementations. The determination in the embodiments of the present application can also be understood as creation (create) or generation (generate), and the "include" in the embodiments of the present application can also be understood as "carrying". This is a unified explanation here, and the embodiments of the present application do not make specific limitations on this.

[0084] Figure 4 An interference coordination method provided in an embodiment of the present application is applied to a communication system including a first TDD system and a second TDD system, the first TDD system uses a first frequency domain resource, the second TDD uses a second frequency domain resource, and the first frequency domain resource and the second frequency domain resource are at least partially the same frequency domain resource, such as Figure 4 As shown, the method may include:

[0085] Step 401: The network equipment of the first TDD system communicates with the user equipment UE using the first designated frequency domain resources in the first time slot of the first radio frame, and the network equipment of the first TDD system communicates with the UE using the first frequency domain resources in other time slots of the first radio frame except the first time slot.

[0086] The first TDD system may include multiple network devices, which may be Figure 1 The network side equipment (nodeB, NB), enhanced network side equipment (enhance nodeB, eNB) or next generation network side equipment (NR nodeB, gNB) in the access network equipment. The user equipment UE (User Experience) can be Figure 2 The terminal, such as the user equipment UE, can be Figure 2 The communication between the network device of the first TDD system and the user equipment UE may include: the network device sending an information scheduling instruction to the user equipment UE, or the network device performing service data transmission with the user equipment UE.

[0087] Similarly, the second TDD system may also include multiple network devices, which may be Figure 1 The network side equipment (nodeB, NB), enhanced network side equipment (enhance nodeB, eNB) or next generation network side equipment (NR nodeB, gNB) in the access network equipment. The user equipment UE (User Experience) can be Figure 2 The terminal, such as the user equipment UE, can be Figure 2 The communication between the network device of the second TDD system and the user equipment UE may include: the network device of the first TDD system sends an information scheduling instruction to the user equipment UE, or the network device of the second TDD system performs service data transmission with the user equipment UE.

[0088] The TDD mode communication system uses a radio frame structure. The radio frame can be 10ms long and consists of two half-frames of 5ms in length. Each half-frame consists of five subframes of 1ms in length. It can also be understood that the entire radio frame is divided into 10 subframes of 1ms in length. The subframe serves as the unit for data scheduling and transmission. The subframe can be a normal subframe or a special subframe. The normal subframe can include one normal time slot, such as a downlink time slot DwPTS or an uplink time slot UpPTS. The special subframe may include a special time slot, which includes DwPTS, a guard interval GP and UpPTS. The length of DwPTS can be configured to 3 to 12 OFDM symbols for the transmission of normal downlink control channels and downlink shared channels; the length of UpPTS can be configured to 1 to 2 OFDM symbols, which can be used to carry uplink physical random access channels and sounding pilot signals; the length of GP can be configured to 1 to 14 OFDM symbols, which can be used for the protection interval between uplink and downlink, and the corresponding time length is approximately 71 to 714 μs, and the corresponding cell radius is 7 km to 100 km.

[0089] It can be seen that by finding the time slot position of the first time slot in the first radio frame of the network device of the first TDD system and combining it with the time slot ratio of the network device of the first TDD system, the time slot function of the first time slot can be determined. Similarly, by finding the time slot position of the second time slot in the second radio frame of the network device of the second TDD system and combining it with the time slot ratio of the network device of the second TDD system, the time slot function of the second time slot can be determined.

[0090] The second time slot has different functions from the first time slot, specifically:

[0091] The first time slot is used for the network equipment of the first TDD system to receive the uplink signal sent by the UE in the first time slot; the second time slot is used for the network equipment of the second TDD system to send the downlink signal to the UE in the second time slot; or, the first time slot is used for the network equipment of the first TDD system to send the downlink signal to the UE in the first time slot; the second time slot is used for the network equipment of the second TDD system to receive the uplink signal sent by the UE in the second time slot.

[0092] Example 1, assuming that the time slot ratio of the network equipment of the first TDD system 1 can be DDDSU (10:2:2), and the time slot ratio of the network equipment of the second TDD system 2 can be DDDSUUDDDD (6:4:4). Of course, the time slot ratio of the network equipment of the first TDD system 1 and the time slot ratio of the network equipment of the second TDD system 2 are not limited to the above, and can also be other ratios. The embodiment of the present application does not make specific limitations. If the time slot ratio of the network equipment of the first TDD system 1 is DDDSU (10:2:2), where 10:2:2 represents the number of uplink symbols in S slot: the number of protection symbols (Guard Period, GP) when switching uplink and downlink data transmission: the number of downlink symbols; the time slot ratio of the network equipment of the second TDD system 2 is DDDSUUDDDD (6:4:4), where 10:2:2 represents the number of uplink symbols in S slot: the number of protection symbols when switching uplink and downlink data transmission: the number of downlink symbols, then the time slot arrangement of the network equipment of the first TDD system 1 and the network equipment of the second TDD system 2 can be obtained, as shown in Table 2:

[0093] Table 2

[0094] TDD system Time slot ratio 0 1 2 3 4 5 6 7 8 9 The first TDD system 1 DDDSU D D D S U D D D S U Second TDD system 2 DDDSUUDDDD D D D S U U D D D D

[0095] The numbers 0 to 9 in Table 2 represent 10 subframes of a radio frame. The first subframe (0) of the first TDD system 1 includes a downlink time slot (D), and the first subframe (0) of the second TDD system 2 includes a downlink time slot (D); the second subframe (1) of the first TDD system 1 includes a downlink time slot (D), and the second subframe (1) of the second TDD system 2 includes a downlink time slot (D); the third subframe (2) of the first TDD system 1 includes a downlink time slot (D), and the third subframe (2) of the second TDD system 2 includes a downlink time slot (D); the fourth subframe (3) of the first TDD system 1 includes a special time slot (S), and the fourth subframe (3) of the second TDD system 2 includes a special time slot (S), wherein the special time slot (S) may include a DwPTS, a guard interval GP, and an UpPTS; the fifth subframe (4) of the first TDD system 1 includes an uplink time slot (U), and the fifth subframe (4) of the second TDD system 2 includes an uplink time slot (U). ) includes an uplink time slot (U); the sixth subframe (5) of the first TDD system 1 includes a downlink time slot (D), and the sixth subframe (5) of the second TDD system 2 includes an uplink time slot (U); the seventh subframe (6) of the first TDD system 1 includes a downlink time slot (D), and the seventh subframe (6) of the second TDD system 2 includes a downlink time slot (D); the eighth subframe (7) of the first TDD system 1 includes a downlink time slot (D), and the eighth subframe (7) of the second TDD system 2 includes a downlink time slot (D); the ninth subframe (8) of the first TDD system 1 includes a special time slot (S), and the ninth subframe (8) of the second TDD system 2 includes a downlink time slot (D), wherein the special time slot (S) may include a DwPTS, a guard interval GP and an UpPTS; the tenth subframe (9) of the first TDD system 1 includes an uplink time slot (U), and the tenth subframe (9) of the second TDD system 2 includes a downlink time slot (D). The uplink time slot is used to transmit uplink signals, and the downlink time slot is used to transmit downlink signals.

[0096] Assume that the first time slot in the first radio frame of the network device of the first TDD system 1 is on the fourth subframe, then the first time slot is a special time slot, which can be an uplink time slot, a guard interval, or a downlink time slot; the second time slot in the second radio frame of the network device of the second TDD system 2 is on the fourth subframe, then the second time slot is a special time slot, which can be an uplink time slot, a guard interval, or a downlink time slot. When the first time slot in the first radio frame of the network device of the first TDD system 1 is an uplink time slot, and the second time slot in the second radio frame of the network device of the second TDD system 2 is a downlink time slot, it is determined that the network device of the first TDD system 1 receives an uplink signal sent by the UE in the first time slot of the first radio frame, and the network device of the second TDD system 2 sends a downlink signal to the UE in the second time slot of the second radio frame, then interference exists between the two TDD systems.

[0097] Similarly, if the first time slot in the first radio frame of the network equipment of the first TDD system 1 is in the sixth subframe, then the first time slot is a downlink time slot; if the second time slot in the second radio frame of the network equipment of the second TDD system 2 is in the sixth subframe, then the second time slot is an uplink time slot. When the network equipment of the first TDD system 1 transmits a downlink signal to the UE in the first time slot of the first radio frame, and the network equipment of the second TDD system 2 receives an uplink signal sent by the UE in the second time slot of the second radio frame, interference exists between the two TDD systems.

[0098] Similarly, if the first time slot in the first radio frame of the network device of the first TDD system 1 is in the ninth subframe, then the first time slot is a special time slot, which can be an uplink time slot, a guard interval, or a downlink time slot; if the second time slot in the second radio frame of the network device of the second TDD system 2 is in the ninth subframe, then the second time slot is a downlink time slot. When the first time slot in the first radio frame of the network device of the first TDD system 1 is an uplink time slot, and the second time slot in the second radio frame of the network device of the second TDD system 2 is a downlink time slot, it is determined that the network device of the first TDD system 1 receives an uplink signal sent by the UE in the first time slot of the first radio frame, and the network device of the second TDD system 2 sends a downlink signal to the UE in the second time slot of the second radio frame, then interference exists between the two TDD systems.

[0099] Similarly, if the first time slot in the first radio frame of the network equipment of the first TDD system 1 is in the tenth subframe, then the first time slot is an uplink time slot; if the second time slot in the second radio frame of the network equipment of the second TDD system 2 is in the tenth subframe, then the second time slot is a downlink time slot. When the network equipment of the first TDD system 1 receives an uplink signal sent by the UE in the first time slot of the first radio frame, and the network equipment of the second TDD system 2 transmits a downlink signal to the UE in the second time slot of the second radio frame, interference exists between the two TDD systems.

[0100] In summary, in order to avoid the interference, the present application uses the first designated frequency domain resources in the first time slot in the first wireless frame by the network equipment of the first TDD system to communicate with the user equipment UE, which belongs to the first frequency domain resources, and the first designated frequency domain resources are different from the second designated frequency domain resources. The second designated frequency domain resources are the frequency domain resources used by the network equipment of the second TDD system to communicate with the UE in the second time slot in the second wireless frame, and the second designated frequency domain resources belong to the second frequency domain resources.

[0101] That is to say, when the time domain position of the first time slot in the first radio frame is the same as the time domain position of the second time slot in the second radio frame, and the functions of the first time slot and the second time slot are different, the network equipment of the first TDD system uses the first designated frequency domain resources in the first time slot in the first radio frame to communicate with the user equipment UE, and the first designated frequency domain resources are different from the second designated frequency domain resources used by the network equipment of the second TDD system to communicate with the user equipment UE in the second time slot in the second radio frame.

[0102] It can also be understood that, when the time domain position of the first time slot in the first radio frame is the same as the time domain position of the second time slot in the second radio frame, and the functions of the first time slot and the second time slot are different, the network equipment of the first TDD system uses the first designated frequency domain resources in the first time slot in the first radio frame to communicate with the user equipment UE, and the network equipment of the second TDD system uses the second designated frequency domain resources in the second time slot in the second radio frame to communicate with the user equipment UE, and the first designated frequency domain resources are different from the second designated frequency domain resources.

[0103] In order to ensure the utilization rate of frequency domain resources by the network equipment of the first TDD system, when the time domain position of the first time slot in the first radio frame is the same as the time domain position of the second time slot in the second radio frame, and the functions of the first time slot and the second time slot are different, the network equipment of the first TDD system uses the first designated frequency domain resources in the first time slot in the first radio frame to communicate with the user equipment UE. At the same time, the network equipment of the first TDD system uses the first frequency domain resources in other time slots of the first radio frame except the first time slot, and the first designated frequency domain resources belong to the first frequency domain resources.

[0104] Example 2: Assuming that the spectrum range of the network equipment of the first TDD system and the network equipment of the second TDD system are both 3500M~3600M, the first frequency domain resources and the second frequency domain resources are both 100M frequency domain bandwidth, the first designated frequency domain resources are 50M (such as 3500M~3550M) frequency domain bandwidth, and the second designated frequency domain resources are another 50M (such as 3551M~3560M) frequency domain bandwidth, that is, excluding the 50M used by the network equipment of the first TDD system 1.

[0105] Continuing with Example 1 above, the network device of the first TDD system 1 is located in the fourth subframe (3) in the first time slot of the first radio frame. The network device of the second TDD system 2 is located in the fourth subframe (3) in the second time slot of the second radio frame. The time slot function of the first time slot can be that the network device of the first TDD system 1 sends a downlink signal to the UE, and the time slot function of the second time slot can be that the network device of the second TDD system 2 receives the uplink signal sent by the UE; or, the time slot function of the first time slot can also be that the network device of the first TDD system 1 receives the uplink signal sent by the UE, and the network device of the second TDD system 2 sends a downlink signal to the UE. At this time, as shown in Table 3, the network device of the first TDD system 1 uses the first designated frequency domain resource (i.e., 50M frequency domain bandwidth) in the first time slot of the first radio frame to communicate with the UE, and the network device of the second TDD system 2 uses the second designated frequency domain resource (i.e., 50M frequency domain bandwidth excluding the 50M frequency domain bandwidth used by the network device of the first TDD system 1) in the second time slot of the second radio frame.

[0106] Similarly, the network equipment of the first TDD system 1 is located in the sixth subframe (5) in the first time slot of the first radio frame. The network equipment of the second TDD system 2 is located in the sixth subframe (5) in the second time slot of the second radio frame. The time slot function of the first time slot is for the network equipment of the first TDD system 1 to send a downlink signal to the UE, and the time slot function of the second time slot is for the network equipment of the second TDD system 2 to receive an uplink signal sent by the UE. At this time, as shown in Table 3, the network equipment of the first TDD system 1 uses the first designated frequency domain resource (i.e., a frequency domain bandwidth of 50M) in the first time slot of the first radio frame to communicate with the UE, and the network equipment of the second TDD system 2 uses the second designated frequency domain resource (i.e., a 50M frequency domain bandwidth excluding the 50M frequency domain bandwidth used by the network equipment of the first TDD system 1) in the second time slot of the second radio frame.

[0107] Similarly, the network equipment of the first TDD system 1 is located in the ninth subframe (8) in the first time slot of the first radio frame. The network equipment of the second TDD system 2 is located in the ninth subframe (8) in the second time slot of the second radio frame. The time slot function of the first time slot can also be that the network equipment of the first TDD system 1 receives the uplink signal sent by the UE, and the network equipment of the second TDD system 2 sends the downlink signal to the UE. At this time, as shown in Table 3, the network equipment of the first TDD system 1 uses the first designated frequency domain resource (i.e., 50M frequency domain bandwidth) in the first time slot of the first radio frame to communicate with the UE, and the network equipment of the second TDD system 2 uses the second designated frequency domain resource (i.e., 50M frequency domain bandwidth excluding the 50M frequency domain bandwidth used by the network equipment of the first TDD system 1) in the second time slot of the second radio frame.

[0108] Similarly, the network equipment of the first TDD system 1 is located in the tenth subframe (9) in the first time slot of the first radio frame. The network equipment of the second TDD system 2 is located in the tenth subframe (9) in the second time slot of the second radio frame. The time slot function of the first time slot can also be that the network equipment of the first TDD system 1 receives the uplink signal sent by the UE, and the network equipment of the second TDD system 2 sends the downlink signal to the UE. At this time, as shown in Table 3, the network equipment of the first TDD system 1 uses the first designated frequency domain resource (i.e., 50M frequency domain bandwidth) in the first time slot of the first radio frame to communicate with the UE, and the network equipment of the second TDD system 2 uses the second designated frequency domain resource (i.e., 50M frequency domain bandwidth excluding the 50M frequency domain bandwidth used by the network equipment of the first TDD system 1) in the second time slot of the second radio frame.

[0109] At the same time, the network equipment of the first TDD system communicates with the UE using the first frequency domain resources (ie, 100M) in other time slots of the first radio frame except the first time slot.

[0110] Table 3

[0111]

[0112] Verification shows that the spectrum utilization of the network equipment of the first TDD system 1 can be (6*14*100+4*14*50) / 10*14*50=160%, and the spectrum utilization of the network equipment of the second TDD system 2 can be (6*14*100+4*14*50) / 10*14*50=160%. This shows that the spectrum utilization of both the first TDD system 1 and the second TDD system 2 has been improved.

[0113] Of course, the spectrum ranges of the network equipment of the first TDD system and the network equipment of the second TDD system may also be different. For example, the spectrum range of the network equipment of the first TDD system is 3500M~3580M, and the spectrum range of the network equipment of the second TDD system is 3520M~3560M. The operators of the two TDD systems can negotiate for allocation, such as, the first designated frequency domain resource can be a frequency domain bandwidth of 50M (such as 3500M~3530M and 3561M~3580M), and the second designated frequency domain resource is another 30M (such as 3531M~3560M). Of course, it can also be allocated in other forms, which is not specifically limited in the embodiments of the present application.

[0114] In one embodiment, if Figure 4a As shown, step 401 can be specifically implemented as follows:

[0115] Step 4011: The network device of the first TDD system receives a first characteristic sequence sent by the network device of the second TDD system in a first radio frame.

[0116] The network device of the first TDD system may receive the first characteristic sequence sent by the network device of the second TDD system in a subframe of the first radio frame. This application does not specifically limit in which subframe of the first radio frame the network device of the first TDD system receives the first characteristic sequence sent by the network device of the second TDD system. It is sufficient that the network device of the first TDD system receives the first characteristic sequence sent by the network device of the second TDD system in the first radio frame.

[0117] Exemplarily, as shown in Table 4, the network device of the first TDD system receives the first characteristic sequence sent by the network device of the second TDD system in the tenth subframe of the first radio frame.

[0118] Table 4

[0119]

[0120] The first signature sequence is used to characterize device information and an interference management reference signal of a network device of the second TDD system. The device information of the network device of the second TDD system may include identification information of the network device of the second TDD system and geographic location information of the network device of the second TDD system. The interference management reference signal may include a voltage signal.

[0121] Because the first signature sequence is used to represent device information, such as device identification information, of the network devices of the second TDD system, when the network devices of the first TDD system receive the first signature sequence in the first radio frame, they know that the first signature sequence was sent by the second TDD system in the second radio frame. As shown in Table 4, the second TDD system sends the first signature sequence in the tenth subframe of the second radio frame.

[0122] Step 4012: The network device of the first TDD system monitors the average interference value corresponding to the first signature sequence according to the device information and the interference management reference signal.

[0123] It should be understood that the average interference value corresponding to the first characteristic sequence is obtained by the network equipment of the first TDD system based on the device information and interference management reference signal of the network equipment of the second TDD system. Exemplarily, the network equipment of the first TDD system determines the signal strength of the received first characteristic sequence based on the identification information, geographic location information, and voltage signal of the network equipment of the second TDD system, and determines the average interference value corresponding to the first characteristic sequence based on the signal strength of the first characteristic sequence.

[0124] Step 4013: When the average interference value corresponding to the first characteristic sequence detected by the network device of the first TDD system is greater than the first threshold, execute step 401.

[0125] The first threshold value can be set as needed without limitation. For example, the first threshold value can be -102dB.

[0126] In one embodiment, Figure 4b As shown, the interference coordination method provided in the embodiment of the present application may further include:

[0127] Step 402: The network device of the first TDD system monitors the interference value of the PUSCH channel.

[0128] Step 403: When the interference value of the PUSCH channel is greater than the second threshold, trigger the network device of the first TDD system to send a second characteristic sequence in the first radio frame.

[0129] The second threshold of the second characteristic can be set as needed without limitation. For example, the second threshold can be -107dB.

[0130] The second characteristic sequence is used to trigger the network equipment of the second TDD system to communicate with the user equipment UE using the second designated frequency domain resources in the second time slot in the second radio frame.

[0131] Exemplarily, as shown in Table 4, the network device of the first TDD system sends the second characteristic sequence in the sixth subframe of the first radio frame.

[0132] Figure 5 An interference coordination method provided in an embodiment of the present application is applied to a communication system including a first TDD system and a second TDD system, wherein the first TDD system uses a first time slot configuration, such as Figure 5 As shown, the method may include:

[0133] Step 501: When the network device of the first TDD system communicates with the UE in the first time slot in the first wireless frame, the logical channel on the first time slot or the symbol in the first time slot is not scheduled, and the time slot configuration of the third time slot corresponding to the first time slot is modified. The modified time slot configuration of the third time slot is different from the first time slot configuration.

[0134] Among them, the first time slot configuration can refer to the association relationship pre-configured for each time slot of the network device of the first TDD system. As shown in Table 2, the downlink time slot of the first subframe is associated with the uplink time slot of the fifth subframe, the downlink time slot of the second subframe is associated with the uplink time slot of the fifth subframe, and the sixth subframe (i.e., the first time slot) is associated with the tenth subframe (i.e., the third time slot).

[0135] Among them, the time domain position of the first time slot in the first radio frame is the same as the time domain position of the second time slot in the second radio frame. The second time slot is the time slot in which the network equipment of the second TDD system communicates with the UE in the second radio frame. The functions of the first time slot and the second time slot are different.

[0136] The first time slot and the second time slot have different functions, specifically:

[0137] The first time slot is used for a network device of a first TDD system to receive an uplink signal sent by a UE in the first time slot; the second time slot is used for a network device of a second TDD system to send a downlink signal to the UE in the second time slot; or, the first time slot is used for a network device of a first TDD system to send a downlink signal to the UE in the first time slot; the second time slot is used for a network device of a second TDD system to receive an uplink signal sent by the UE in the second time slot. Specific examples are as described above.

[0138] Step 502: The network device of the first TDD system communicates with the UE using the first time slot configuration in other time slots, where the other time slots are time slots other than the first time slot and the third time slot in the first radio frame.

[0139] In order to avoid interference, the time slots used for transmitting uplink signals or downlink signals in the first time slot may be adjusted in timing. Specifically, step 501 may be implemented in the following two ways:

[0140] Method 1: Perform timing adjustment on the time slot used to transmit downlink signals in the first time slot. The specific implementation may be: when the network device of the first TDD system communicates with the UE in the first time slot in the first wireless frame, the downlink time slot in the first time slot or the logical channel on the symbol in the downlink time slot is not scheduled, and the time slot configuration of the third time slot corresponding to the downlink time slot in the first time slot is modified. The modified time slot configuration of the third time slot is different from the first time slot configuration.

[0141] Example 2, assuming that the length of the downlink time slot DwPTS can be configured to 4 or 14 OFDM symbols. As shown in Table 5, when the network equipment of the first TDD system communicates with the UE in the first time slot in the first wireless frame, the downlink time slot of the fourth subframe in the first time slot or the logical channel on the symbol in the downlink time slot is not scheduled, and the time slot configuration of the time slot on the ninth subframe corresponding to the downlink time slot of the fourth subframe in the first time slot is modified. That is to say, when the network equipment of the first TDD system communicates with the UE in the first time slot in the first wireless frame, the downlink time slot in the fourth subframe of the first time slot or the logical channel on the symbol in the downlink time slot is not scheduled, the association relationship between the downlink time slot in the fourth subframe and the time slot of the eighth subframe is released, and the time slot of the eighth subframe is configured with other time slots except the first time slot, such as the time slot of the third subframe.

[0142] Similarly, as shown in Table 5, when the network device of the first TDD system communicates with the UE in the first time slot in the first radio frame, it does not schedule the downlink time slot of the sixth subframe of the first time slot or the logical channel on the symbol in the downlink time slot, and modifies the time slot configuration of the time slot on the tenth subframe corresponding to the downlink time slot of the sixth subframe in the first time slot. In other words, when the network device of the first TDD system communicates with the UE in the first time slot in the first radio frame, it does not schedule the downlink time slot in the sixth subframe of the first time slot or the logical channel on the symbol in the downlink time slot, releases the association between the downlink time slot in the sixth subframe and the time slot of the tenth subframe, and configures the time slot of the tenth subframe with other time slots except the first time slot, such as the time slot of the third subframe.

[0143] Table 5

[0144]

[0145] At the same time, to improve spectrum utilization, the network equipment of the first TDD system uses the first time slot configuration in other time slots to communicate with the UE. For example, the network equipment of the first TDD system sends a downlink signal to the UE in the downlink time slot of the first subframe and receives an uplink signal sent by the UE in the uplink time slot of the fifth subframe.

[0146] Verification shows that the spectrum utilization of the network equipment in the first TDD system 1 is (8*14*100+1*10*100) / 10*14*50=174%, and the spectrum utilization of the network equipment in the second TDD system 2 is (8*14*100+1*10*100) / 10*14*50=174%. This shows that the spectrum utilization of both the first TDD system 1 and the second TDD system 2 has improved.

[0147] Method 2: timing adjustment is performed on the time slot used for transmitting uplink signals in the first time slot. The specific implementation may be:

[0148] When the network device of the first TDD system communicates with the UE in the first time slot in the first wireless frame, it does not schedule the uplink time slot of the first time slot or the logical channel on the symbol in the uplink time slot, and modifies the time slot configuration of the third time slot corresponding to the uplink time slot in the first time slot. The modified time slot configuration of the third time slot is different from the first time slot configuration.

[0149] Example 3, assuming that the length of the uplink time slot UpPTS can be configured to be 2 or 14 OFDM symbols. As shown in Table 6, when the network device of the first TDD system communicates with the UE in the first time slot in the first radio frame, the uplink time slot of the ninth subframe in the first time slot or the logical channel on the symbol in the uplink time slot is not scheduled, and the time slot configuration of the uplink and downlink time slots of the fourth subframe corresponding to the uplink time slot of the ninth subframe in the first time slot is modified. That is to say, when the network device of the first TDD system communicates with the UE in the first time slot in the first radio frame, the uplink time slot in the ninth subframe of the first time slot or the logical channel on the symbol in the uplink time slot is not scheduled, the association between the uplink time slot in the ninth subframe and the downlink time slot of the fourth subframe is released, and the downlink time slot of the fourth subframe is configured with other time slots except the first time slot, such as the time slot in the next radio frame.

[0150] Similarly, as shown in Table 5, when the network equipment of the first TDD system communicates with the UE in the first time slot in the first radio frame, the uplink time slot of the tenth subframe of the first time slot or the logical channel on the symbol in the uplink time slot is not scheduled, and the time slot configuration of the uplink and downlink time slots of the sixth subframe corresponding to the uplink time slot of the tenth subframe in the first time slot is modified. In other words, when the network equipment of the first TDD system communicates with the UE in the first time slot in the first radio frame, the uplink time slot of the tenth subframe of the first time slot or the logical channel on the symbol in the uplink time slot is not scheduled, the association between the downlink time slot in the sixth subframe and the time slot of the tenth subframe is released, and the downlink time slot of the sixth subframe is configured with other time slots except the first time slot, such as the time slot in the next radio frame.

[0151] Table 6

[0152]

[0153]

[0154] At the same time, to improve spectrum utilization, the network equipment of the first TDD system uses the first time slot configuration in other time slots to communicate with the UE. For example, the network equipment of the first TDD system sends a downlink signal to the UE in the downlink time slot of the second subframe and receives an uplink signal sent by the UE in the uplink time slot of the fifth subframe.

[0155] Verification shows that the spectrum utilization of the network equipment in the first TDD system 1 is (8*14*100+1*12*100) / 10*14*50=177%, and the spectrum utilization of the network equipment in the second TDD system 2 is (8*14*100+1*12*100) / 10*14*50=177%. This shows that the spectrum utilization of both the first TDD system 1 and the second TDD system 2 has improved.

[0156] In one embodiment, if Figure 5a As shown, step 501 can be specifically implemented as follows:

[0157] Step 5011: The network device of the first TDD system receives a first characteristic sequence sent by the network device of the second TDD system in a first radio frame.

[0158] The network device of the first TDD system may receive the first characteristic sequence sent by the network device of the second TDD system in a subframe of the first radio frame. This application does not specifically limit in which subframe of the first radio frame the network device of the first TDD system receives the first characteristic sequence sent by the network device of the second TDD system. It is sufficient that the network device of the first TDD system receives the first characteristic sequence sent by the network device of the second TDD system in the first radio frame.

[0159] Exemplarily, as shown in Table 7, the network device of the first TDD system receives the first characteristic sequence sent by the network device of the second TDD system in the tenth subframe of the first radio frame.

[0160] Table 7

[0161]

[0162] The first signature sequence is used to characterize device information and an interference management reference signal of a network device of the second TDD system. The device information of the network device of the second TDD system may include identification information of the network device of the second TDD system and geographic location information of the network device of the second TDD system. The interference management reference signal may include a voltage signal.

[0163] Because the first signature sequence is used to represent device information, such as device identification information, of the network devices of the second TDD system, when the network devices of the first TDD system receive the first signature sequence in the first radio frame, they know that the first signature sequence was sent by the second TDD system in the second radio frame. As shown in Table 7, the second TDD system sends the first signature sequence in the tenth subframe of the second radio frame.

[0164] Step 5012: The network device of the first TDD system monitors the average interference value corresponding to the first signature sequence according to the device information and the interference management reference signal.

[0165] It should be understood that the average interference value corresponding to the first characteristic sequence is obtained by the network equipment of the first TDD system based on the device information and interference management reference signal of the network equipment of the second TDD system. Exemplarily, the network equipment of the first TDD system determines the signal strength of the received first characteristic sequence based on the identification information, geographic location information, and voltage signal of the network equipment of the second TDD system, and determines the average interference value corresponding to the first characteristic sequence based on the signal strength of the first characteristic sequence.

[0166] Step 5013: When the average interference value corresponding to the first characteristic sequence detected by the network device of the first TDD system is greater than the first threshold, execute step 501.

[0167] The first threshold value can be set as needed without limitation. For example, the first threshold value can be -102dB.

[0168] In one embodiment, Figure 5b As shown, the interference coordination method provided in the embodiment of the present application may further include:

[0169] Step 503: The network device of the first TDD system monitors the interference value of the PUSCH channel.

[0170] Step 504: When the interference value of the PUSCH channel is greater than the second threshold, trigger the network device of the first TDD system to send a second characteristic sequence in the first radio frame.

[0171] The second threshold of the second characteristic can be set as needed without limitation. For example, the second threshold can be -107dB.

[0172] The second characteristic sequence is used to trigger the network equipment of the second TDD system to communicate with the user equipment UE by using the modified time slot configuration in the second time slot in the second radio frame.

[0173] Exemplarily, as shown in Table 7, the network device of the first TDD system sends the second characteristic sequence in the sixth subframe of the first radio frame.

[0174] It should be added here that the interference coordination method provided in the embodiment of the present application is applied to the geographical intersection of the first TDD system and the second TDD system. The network equipment of the first TDD system uses the first designated frequency domain resources and / or the modified time slot configuration in the first time slot to communicate with the UE, and the network equipment of the second TDD system uses the second designated frequency domain resources and / or the modified time slot configuration in the second time slot to communicate with the UE. The first designated frequency domain resources are different from the second designated frequency domain resources. The first time slot and the second time slot have the same time slot position and different functions, so that in time slots with different functions at the same time slot position, the network equipment of the first TDD system and the network equipment of the second TDD system are subjected to frequency error processing in the frequency domain and / or the time slot configuration is modified in the time domain, while the frequency domain and time domain of the network equipment of the first TDD system and the network equipment of the second TDD system are not adjusted in other time slots. This can effectively avoid interference between the first TDD system and the second TDD system, and is easier to implement and has lower cost than avoiding interference by increasing the distance interval between the first TDD system and the second TDD system in geographical location, so that a win-win situation can be achieved between adjacent asynchronous TDD systems.

[0175] Figure 6 An interference coordination method provided in an embodiment of the present application is applied to a communication system including a first TDD system and a second TDD system, the first TDD system uses a first frequency domain resource, the second TDD uses a second frequency domain resource, the first frequency domain resource and the second frequency domain resource are at least partially the same frequency domain resource, the first TDD system uses a first time slot configuration, and the second TDD system uses a second time slot configuration, such as Figure 6 As shown, the method may include:

[0176] Step 601: The first network device uses the first designated frequency domain resources to communicate with the user equipment UE in the first time slot in the first radio frame. When the first network device communicates with the UE in the fourth time slot in the first radio frame, the logical channel on the fourth time slot or the symbol in the fourth time slot is not scheduled, and the time slot configuration of the third time slot corresponding to the fourth time slot is modified. The modified time slot configuration of the fourth time slot is different from the first time slot configuration, and the network device of the first TDD system uses the first frequency domain resources to communicate with the UE in the time slots other than the first time slot, the third time slot and the fourth time slot in the first radio frame, wherein the first designated frequency domain resources belong to the first frequency domain resources.

[0177] Step 602: The second network device uses the second designated frequency domain resources to communicate with the UE in the second time slot in the second radio frame. When the second network device communicates with the UE in the fifth time slot in the second radio frame, it does not schedule the logical channel on the fifth time slot or the symbol in the fifth time slot, and modifies the time slot configuration of the sixth time slot corresponding to the fifth time slot. The modified time slot configuration of the fifth time slot is different from the second time slot configuration, and the network device of the second TDD system uses the second frequency domain resources to communicate with the UE in the time slots other than the second time slot, the fifth time slot and the sixth time slot in the second radio frame, wherein the second designated frequency domain resources belong to the second frequency domain resources.

[0178] Among them, the first designated frequency domain resource is different from the second designated frequency domain resource; the time domain position of the first time slot in the first wireless frame is the same as the time domain position of the second time slot in the second wireless frame, and the functions of the first time slot and the second time slot are different.

[0179] In order to maximize the utilization of frequency domain resources, preferably, the first time slot and the second time slot are uplink time slots or downlink time slots, at least one time slot among the third time slot and the fourth time slot is a special time slot, and at least one time slot among the fifth time slot and the sixth time slot is a special time slot.

[0180] Example 4, as shown in Table 8, continues with the above example, assuming that the first frequency domain resource and the second frequency domain resource are both 100M, the first designated frequency domain resource is 50M, and the second designated frequency domain resource is 50M excluding the first designated frequency domain resource.

[0181] The first network device uses the first designated frequency domain resources to communicate with the user equipment UE in the time slot of the sixth subframe in the first radio frame. When the first network device communicates with the UE in the downlink time slot of the fourth subframe in the first radio frame, the downlink time slot of the fourth subframe or the logical channel on the symbol in the downlink time slot is not scheduled, and the time slot configuration of the third time slot (the uplink time slot of the 8th subframe) corresponding to the downlink time slot of the fourth subframe is modified. The modified time slot configuration of the downlink time slot of the fourth subframe is different from the first time slot configuration, and the network device of the first TDD system uses the first frequency domain resources to communicate with the UE in the time slots of the first radio frame except the time slots of the fourth subframe, the time slots of the sixth subframe, the time slots of the sixth subframe and the time slots of the tenth subframe.

[0182] The second network device uses the second designated frequency domain resources to communicate with the UE in the time slot of the sixth subframe in the second wireless frame. When the second network device communicates with the UE in the downlink time slot of the ninth subframe in the second wireless frame, it does not schedule the downlink time slot of the ninth subframe in the fifth time slot or the logical channel on the symbol in the downlink time slot, and modifies the time slot configuration of the sixth time slot corresponding to the downlink time slot of the ninth subframe. The modified time slot configuration of the downlink time slot of the ninth subframe is different from the second time slot configuration, and the network device of the second TDD system uses the second frequency domain resources to communicate with the UE in the time slots of the second wireless frame except the time slots of the fourth subframe, the time slots of the sixth subframe, the time slots of the sixth subframe and the time slots of the tenth subframe.

[0183] Table 8

[0184]

[0185] Verification shows that the spectrum utilization of the network equipment in the first TDD system 1 is (7*14*100+1*10*100+2*14*50) / 10*14*50=174%, and the spectrum utilization of the network equipment in the second TDD system 2 is (7*14*100+1*10*100+2*14*50) / 10*14*50=174%. This shows that the spectrum utilization of both the first TDD system 1 and the second TDD system 2 has improved.

[0186] Of course, the network equipment of the first TDD system uses the first designated frequency domain resources and / or the modified time slot configuration to communicate with the UE in the first time slot. At this time, the network equipment of the second TDD system can use the second frequency domain resources and / or the second time slot configuration to communicate with the UE in the second time slot; of course, the network equipment of the second TDD system uses the second designated frequency domain resources and / or the modified time slot configuration to communicate with the UE in the second time slot, and the network equipment of the first TDD system can use the first frequency domain resources and / or the first time slot configuration to communicate with the UE in the first time slot. That is to say, the network equipment of the first TDD system and the network equipment of the second TDD system can be adjusted in the time domain and / or frequency domain at the same time, or one of the network equipment of the first TDD system and the network equipment of the second TDD system can be adjusted in the time domain and / or frequency domain. The specific implementation needs to be selected according to actual needs, and the embodiments of this application do not make specific limitations.

[0187] Figure 7 An interference coordination apparatus provided in an embodiment of the present application is applied to a communication system including a first TDD system and a second TDD system, wherein the first TDD system uses a first frequency domain resource, and the second TDD system uses a second frequency domain resource, and the first frequency domain resource and the second frequency domain resource have at least some frequency domain resources in common. The apparatus 700 includes:

[0188] A communication unit 701 is configured for a network device of a first TDD system to communicate with a user equipment (UE) using first designated frequency domain resources in a first time slot in a first radio frame, and the network device of the first TDD system to communicate with the UE using first frequency domain resources in other time slots of the first radio frame except the first time slot;

[0189] Among them, the first designated frequency domain resource belongs to the first frequency domain resource, and the first designated frequency domain resource is different from the second designated frequency domain resource. The second designated frequency domain resource is the frequency domain resource used by the network device of the second TDD system to communicate with the UE in the second time slot in the second wireless frame. The second designated frequency domain resource belongs to the second frequency domain resource. The time domain position of the second time slot in the second wireless frame is the same as the time domain position of the first time slot in the first wireless frame. The functions of the second time slot and the first time slot are different.

[0190] Furthermore, the second time slot and the first time slot have different functions, specifically:

[0191] In the first time slot, the network device of the first TDD system receives an uplink signal sent by the UE in the first time slot; in the second time slot, the network device of the second TDD system sends a downlink signal to the UE in the second time slot; or

[0192] In the first time slot, the network equipment of the first TDD system sends a downlink signal to the UE in the first time slot; in the second time slot, the network equipment of the second TDD system receives an uplink signal sent by the UE in the second time slot.

[0193] Furthermore, the communication unit 701 may include:

[0194] A transmitting subunit 7011 is configured to receive, by a network device of the first TDD system, a first characteristic sequence sent by a network device of the second TDD system in a first radio frame, where the first characteristic sequence is used to represent device information and an interference management reference signal of the network device of the second TDD system;

[0195] A monitoring subunit 7012 is configured for the network device of the first TDD system to monitor an average interference value corresponding to the first signature sequence according to the device information and the interference management reference signal;

[0196] The communication subunit 7013 is configured to communicate with the user equipment UE using the first designated frequency domain resources in the first time slot of the first radio frame by the network device of the first TDD system when the average interference value corresponding to the first characteristic sequence is greater than the first threshold.

[0197] Furthermore, the apparatus 700 may further include:

[0198] A monitoring unit 702 is configured to monitor an interference value of a PUSCH channel in a network device of a first TDD system;

[0199] The trigger unit 703 is used to trigger the network equipment of the first TDD system to send a second characteristic sequence in a time slot in the first radio frame when the interference value of the PUSCH channel is greater than the second threshold. The second characteristic sequence is used to trigger the network equipment of the second TDD system to communicate with the user equipment UE using the second designated frequency domain resources in the second time slot in the second radio frame.

[0200] Specifically, in this possible design, the above Figure 4 to Figure 4b All relevant contents of each step of the network device of the first TDD system in the embodiment of the method shown can be referred to the functional description of the corresponding functional module, and will not be repeated here. The interference coordination device 700 described in this possible design is used to perform Figure 4 to Figure 4b The function of the network device of the first TDD system in the interference coordination method shown can therefore achieve the same effect as the above interference coordination method.

[0201] Figure 8 An interference coordination apparatus provided in an embodiment of the present application is applied to a communication system including a first TDD system and a second TDD system, where the first TDD system uses a first time slot configuration. The apparatus 800 may include:

[0202] a modification unit 801 configured to, when a network device of a first TDD system communicates with a UE in a first time slot in a first radio frame, not schedule a logical channel in the first time slot or a symbol in the first time slot, and modify a time slot configuration of a third time slot corresponding to the first time slot, where the modified time slot configuration of the third time slot is different from the first time slot configuration; and

[0203] A communication unit 802 is configured for a network device of a first TDD system to communicate with a UE using a first time slot configuration in other time slots, where the other time slots are time slots other than the first time slot and the third time slot in a first radio frame;

[0204] Among them, the time domain position of the first time slot in the first radio frame is the same as the time domain position of the second time slot in the second radio frame. The second time slot is the time slot in which the network equipment of the second TDD system communicates with the UE in the second radio frame. The functions of the first time slot and the second time slot are different.

[0205] Furthermore, the second time slot and the first time slot have different functions, specifically:

[0206] In the first time slot, the network device of the first TDD system receives an uplink signal sent by the UE in the first time slot; in the second time slot, the network device of the second TDD system sends a downlink signal to the UE in the second time slot; or

[0207] In the first time slot, the network equipment of the first TDD system sends a downlink signal to the UE in the first time slot; in the second time slot, the network equipment of the second TDD system receives an uplink signal sent by the UE in the second time slot.

[0208] Furthermore, the modifying unit 801 includes:

[0209] A receiving subunit 8011 is configured to receive, by a network device of the first TDD system, a first signature sequence sent by a network device of the second TDD system in a time slot in a first radio frame, where the first signature sequence is used to represent device information and an interference management reference signal of the network device of the second TDD system;

[0210] A monitoring subunit 8012 is configured for the network device of the first TDD system to monitor an average interference value corresponding to the first signature sequence according to the device information and the interference management reference signal;

[0211] Modification sub-unit 8013 is used to not schedule the logical channel on the first time slot or the symbol in the first time slot when the average interference value corresponding to the first characteristic sequence is greater than the first threshold and when the network device of the first TDD system communicates with the UE in the first time slot in the first wireless frame, and to modify the time slot configuration of the third time slot corresponding to the first time slot.

[0212] Furthermore, the apparatus 800 may include:

[0213] A monitoring unit 803 is configured for the network device of the first TDD system to monitor the interference value of the PUSCH channel;

[0214] The trigger unit 804 is used to trigger the network equipment of the first TDD system to send a second characteristic sequence on the first radio frame when the interference value of the PUSCH channel is greater than the second threshold. The second characteristic sequence is used to trigger the network equipment of the second TDD system to use the modified time slot configuration in the second time slot in the second radio frame to communicate with the user equipment UE.

[0215] Specifically, in this possible design, the above Figure 5 to Figure 5b All relevant contents of each step of the network device of the first TDD system in the embodiment of the method shown can be referred to the functional description of the corresponding functional module, and will not be repeated here. The interference coordination device 800 described in this possible design is used to perform Figure 5 to Figure 5b The function of the network device of the first TDD system in the interference coordination method shown can therefore achieve the same effect as the above interference coordination method.

[0216] Figure 9An interference coordination system provided in an embodiment of the present application includes a first network device 901 and a second network device 902. The first network device 901 uses a first frequency domain resource, and the second network device 902 uses a second frequency domain resource. The first frequency domain resource and the second frequency domain resource are at least partially the same frequency domain resource. The system 900 includes:

[0217] A first network device 901 is configured to communicate with a user equipment UE using first designated frequency domain resources in a first time slot in a first radio frame, and the first network device communicates with the UE using first frequency domain resources in time slots other than the first time slot in the first radio frame, where the first designated frequency domain resources belong to first frequency domain resources;

[0218] The second network device 902 is configured to communicate with the UE using second designated frequency domain resources in a second time slot in a second radio frame, and the second network device communicates with the UE using second frequency domain resources in a time slot other than the second time slot in the second radio frame, where the second designated frequency domain resources belong to the second frequency domain resources;

[0219] Among them, the first designated frequency domain resource is different from the second designated frequency domain resource; the time domain position of the first time slot in the first wireless frame is the same as the time domain position of the second time slot in the second wireless frame, and the functions of the first time slot and the second time slot are different.

[0220] Figure 10 An interference coordination system provided in an embodiment of the present application includes a first network device 1001 and a second network device 1002. The first network device 1001 uses a first time slot configuration, and the second network device 1002 uses a second time slot configuration. The system 1000 includes:

[0221] The first network device 1001 is configured to, when communicating with the UE in a first time slot in a first radio frame, not schedule a logical channel in the first time slot or a symbol in the first time slot, and modify a time slot configuration of a third time slot corresponding to the first time slot, where the modified time slot configuration of the third time slot is different from the first time slot configuration;

[0222] A first network device 1001 is configured to communicate with a UE using a first time slot configuration in a first other time slot, where the first other time slot is a time slot other than the first time slot and the third time slot in a first radio frame;

[0223] The second network device 1002 is configured to, when communicating with the UE in the second time slot in the second radio frame, not schedule a logical channel in the second time slot or a symbol in the second time slot, and modify a time slot configuration of a fourth time slot corresponding to the second time slot, where the modified time slot configuration of the fourth time slot is different from the second time slot configuration;

[0224] The second network device 1002 is configured to communicate with the UE using a second time slot configuration in a second other time slot, where the second other time slot is a time slot other than the second time slot and the fourth time slot in the second radio frame;

[0225] The time domain position of the first time slot in the first wireless frame is the same as the time domain position of the second time slot in the second wireless frame, and the functions of the first time slot and the second time slot are different; the time domain position of the third time slot in the first wireless frame is the same as the time domain position of the fourth time slot in the second wireless frame, and the functions of the third time slot and the fourth time slot are different.

[0226] The embodiment of the present application provides a network device, comprising: a processor and a memory, the memory being coupled to the processor, the memory being used to store computer program code, the computer program code comprising computer instructions, and when the processor reads the computer instructions from the memory, the network device executes Figure 4 to Figure 4b The interference coordination method shown.

[0227] The embodiment of the present application provides a computer program product, which, when executed on a computer, enables the computer to execute Figure 4 to Figure 4b The interference coordination method shown.

[0228] The embodiment of the present application provides a computer-readable storage medium, which includes computer instructions. When the computer instructions are executed on a terminal, the network device executes Figure 4 to Figure 4b The interference coordination method shown.

[0229] The embodiment of the present application provides a chip system, which includes one or more processors. When one or more processors execute instructions, one or more processors execute Figure 4 to Figure 4b The interference coordination method shown.

[0230] The embodiment of the present application provides a network device, comprising: a processor and a memory, the memory being coupled to the processor, the memory being used to store computer program code, the computer program code comprising computer instructions, and when the processor reads the computer instructions from the memory, the network device executes Figure 5 to Figure 5b The interference coordination method shown.

[0231] The embodiment of the present application provides a computer program product, which, when executed on a computer, enables the computer to execute Figure 5 to Figure 5b The interference coordination method shown.

[0232] The embodiment of the present application provides a computer-readable storage medium, which includes computer instructions. When the computer instructions are executed on a terminal, the network device executes Figure 5 to Figure 5b The interference coordination method shown.

[0233] The embodiment of the present application provides a chip system, which includes one or more processors. When one or more processors execute instructions, one or more processors execute Figure 5 to Figure 5b The interference coordination method shown.

[0234] Through the description of the above implementation methods, technical personnel in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0235] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the modules or units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0236] The units described as separate components may or may not be physically separate, and the components shown as units may be one physical unit or multiple physical units, that is, they may be located in one place or distributed in multiple places. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0237] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0238] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium. Based on this understanding, the technical solution of the embodiment of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for making a device (which can be a single-chip microcomputer, chip, etc.) or a processor (processor) perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program code, such as a U disk, a mobile hard disk, a ROM, a RAM, a magnetic disk or an optical disk. The above is only a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or replacements within the technical scope disclosed in the present application should be included within the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. An interference coordination method, characterized in that: Applied to a communication system including a first TDD system and a second TDD system, the first TDD system uses first frequency domain resources, the second TDD system uses second frequency domain resources, and the first frequency domain resources and the second frequency domain resources are at least partially the same frequency domain resources, including: The network device of the first TDD system receives, in a first radio frame, a first characteristic sequence sent by the network device of the second TDD system, where the first characteristic sequence is used to characterize device information and an interference management reference signal of the network device of the second TDD system; The network device of the first TDD system monitors an average interference value corresponding to the first signature sequence according to the device information and the interference management reference signal; When the average interference value corresponding to the first characteristic sequence is greater than a first threshold, the network device of the first TDD system communicates with the user equipment UE by using the first designated frequency domain resources in the first time slot of the first radio frame, and the network device of the first TDD system communicates with the UE by using the first frequency domain resources in other time slots of the first radio frame except the first time slot; Among them, the first designated frequency domain resource belongs to the first frequency domain resource, and the first designated frequency domain resource is different from the second designated frequency domain resource. The second designated frequency domain resource is the frequency domain resource used by the network equipment of the second TDD system to communicate with the UE in the second time slot in the second wireless frame. The second designated frequency domain resource belongs to the second frequency domain resource. The time domain position of the second time slot in the second wireless frame is the same as the time domain position of the first time slot in the first wireless frame. The functions of the second time slot and the first time slot are different.

2. The method according to claim 1, characterized in that The second time slot and the first time slot have different functions, specifically: In the first time slot, the network device of the first TDD system receives the uplink signal sent by the UE in the first time slot; in the second time slot, the network device of the second TDD system sends the downlink signal to the UE in the second time slot; or The first time slot is used by the network device of the first TDD system to send a downlink signal to the UE in the first time slot; the second time slot is used by the network device of the second TDD system to receive an uplink signal sent by the UE in the second time slot.

3. The method according to claim 1 or 2, characterized in that The method further comprises: The network device of the first TDD system monitors the interference value of the PUSCH channel; When the interference value of the PUSCH channel is greater than the second threshold, the network device of the first TDD system is triggered to send a second characteristic sequence in a time slot in the first radio frame, and the second characteristic sequence is used to trigger the network device of the second TDD system to communicate with the user equipment UE using the second designated frequency domain resources in the second time slot in the second radio frame.

4. An interference coordination method, characterized in that: Applied to a communication system including a first TDD system and a second TDD system, where the first TDD system uses a first time slot configuration, including: The network device of the first TDD system receives, in a time slot in a first radio frame, a first characteristic sequence sent by the network device of the second TDD system, where the first characteristic sequence is used to represent device information and an interference management reference signal of the network device of the second TDD system; The network device of the first TDD system monitors an average interference value corresponding to the first signature sequence according to the device information and the interference management reference signal; When the average interference value corresponding to the first characteristic sequence is greater than a first threshold, and when the network device of the first TDD system communicates with the UE in a first time slot in a first radio frame, the logical channel on the first time slot or the symbol in the first time slot is not scheduled, and the time slot configuration of a third time slot corresponding to the first time slot is modified, where the modified time slot configuration of the third time slot is different from the first time slot configuration; and The network device of the first TDD system communicates with the UE using the first time slot configuration in other time slots, where the other time slots are time slots other than the first time slot and the third time slot in the first radio frame; Among them, the time domain position of the first time slot in the first radio frame is the same as the time domain position of the second time slot in the second radio frame, the second time slot is the time slot in which the network equipment of the second TDD system communicates with the UE in the second radio frame, and the functions of the first time slot and the second time slot are different.

5. The method according to claim 4, characterized in that The second time slot and the first time slot have different functions, specifically: In the first time slot, the network device of the first TDD system receives the uplink signal sent by the UE in the first time slot; in the second time slot, the network device of the second TDD system sends the downlink signal to the UE in the second time slot; or The first time slot is used by the network device of the first TDD system to send a downlink signal to the UE in the first time slot; the second time slot is used by the network device of the second TDD system to receive an uplink signal sent by the UE in the second time slot.

6. The method according to claim 4 or 5, characterized in that include: The network device of the first TDD system monitors the interference value of the PUSCH channel; When the interference value of the PUSCH channel is greater than the second threshold, the network device of the first TDD system is triggered to send a second characteristic sequence on the first radio frame, and the second characteristic sequence is used to trigger the network device of the second TDD system to communicate with the user equipment UE using the modified time slot configuration in the second time slot in the second radio frame.

7. An interference coordination device, characterized in that: Applicable to a communication system including a first TDD system and a second TDD system, wherein the first TDD system uses first frequency domain resources, the second TDD system uses second frequency domain resources, and the first frequency domain resources and the second frequency domain resources are at least partially the same frequency domain resources, comprising: a communication unit; Wherein, the communication unit includes: A sending subunit, configured to receive, by the network device of the first TDD system, in a first radio frame, a first characteristic sequence sent by the network device of the second TDD system, where the first characteristic sequence is used to characterize device information and an interference management reference signal of the network device of the second TDD system; A monitoring subunit, configured for the network device of the first TDD system to monitor an average interference value corresponding to the first characteristic sequence according to the device information and the interference management reference signal; a communication subunit, configured to, when the average interference value corresponding to the first characteristic sequence is greater than a first threshold, cause the network device of the first TDD system to communicate with the user equipment UE by using the first designated frequency domain resources in the first time slot in the first radio frame, and the network device of the first TDD system to communicate with the UE by using the first frequency domain resources in other time slots of the first radio frame except the first time slot; Among them, the first designated frequency domain resource belongs to the first frequency domain resource, and the first designated frequency domain resource is different from the second designated frequency domain resource. The second designated frequency domain resource is the frequency domain resource used by the network equipment of the second TDD system to communicate with the UE in the second time slot in the second wireless frame. The second designated frequency domain resource belongs to the second frequency domain resource. The time domain position of the second time slot in the second wireless frame is the same as the time domain position of the first time slot in the first wireless frame. The functions of the second time slot and the first time slot are different.

8. The device according to claim 7, characterized in that The second time slot and the first time slot have different functions, specifically: In the first time slot, the network device of the first TDD system receives the uplink signal sent by the UE in the first time slot; in the second time slot, the network device of the second TDD system sends the downlink signal to the UE in the second time slot; or The first time slot is used by the network device of the first TDD system to send a downlink signal to the UE in the first time slot; the second time slot is used by the network device of the second TDD system to receive an uplink signal sent by the UE in the second time slot.

9. The device according to claim 7 or 8, characterized in that The device further comprises: A monitoring unit, configured for the network device of the first TDD system to monitor an interference value of a PUSCH channel; A triggering unit is used to trigger the network equipment of the first TDD system to send a second characteristic sequence in a time slot in the first radio frame when the interference value of the PUSCH channel is greater than a second threshold value. The second characteristic sequence is used to trigger the network equipment of the second TDD system to communicate with the user equipment UE using a second designated frequency domain resource in a second time slot in the second radio frame.

10. An interference coordination device, characterized in that: Applied to a communication system including a first TDD system and a second TDD system, the first TDD system using a first time slot configuration, comprising: a modification unit and a communication unit, wherein the modification unit includes a receiving subunit, a monitoring subunit, and a modification subunit; the receiving subunit is configured to enable a network device of the first TDD system to receive a first characteristic sequence sent by a network device of the second TDD system in a time slot in a first radio frame, the first characteristic sequence being used to characterize device information and an interference management reference signal of the network device of the second TDD system; The monitoring subunit is used for the network device of the first TDD system to monitor the average interference value corresponding to the first characteristic sequence according to the device information and the interference management reference signal; The modification subunit is configured to, when the average interference value corresponding to the first characteristic sequence is greater than a first threshold and the network device of the first TDD system communicates with the UE in a first time slot in a first radio frame, not schedule the logical channel on the first time slot or the symbol in the first time slot, and modify the time slot configuration of a third time slot corresponding to the first time slot, where the modified time slot configuration of the third time slot is different from the first time slot configuration; The communication unit is configured to enable the network device of the first TDD system to communicate with the UE using the first time slot configuration in other time slots, where the other time slots are time slots other than the first time slot and the third time slot in the first radio frame; Among them, the time domain position of the first time slot in the first radio frame is the same as the time domain position of the second time slot in the second radio frame, the second time slot is the time slot in which the network equipment of the second TDD system communicates with the UE in the second radio frame, and the functions of the first time slot and the second time slot are different.

11. The device according to claim 10, characterized in that The second time slot and the first time slot have different functions, specifically: In the first time slot, the network device of the first TDD system receives the uplink signal sent by the UE in the first time slot; in the second time slot, the network device of the second TDD system sends the downlink signal to the UE in the second time slot; or The first time slot is used by the network device of the first TDD system to send a downlink signal to the UE in the first time slot; the second time slot is used by the network device of the second TDD system to receive an uplink signal sent by the UE in the second time slot.

12. The device according to claim 10 or 11, characterized in that include: A monitoring unit, configured for the network device of the first TDD system to monitor an interference value of a PUSCH channel; A triggering unit is used to trigger the network equipment of the first TDD system to send a second characteristic sequence on the first radio frame when the interference value of the PUSCH channel is greater than a second threshold value. The second characteristic sequence is used to trigger the network equipment of the second TDD system to communicate with the user equipment UE using a modified time slot configuration in the second time slot in the second radio frame.

13. An interference coordination system, characterized in that: The method includes a first network device and a second network device, wherein the first network device uses a first frequency domain resource, the second network device uses a second frequency domain resource, and the first frequency domain resource and the second frequency domain resource are at least partially identical in frequency domain resources, including: The first network device is configured to receive, in a first radio frame, a first characteristic sequence sent by the second network device, where the first characteristic sequence is used to represent device information and an interference management reference signal of the second network device; The first network device is configured to monitor an average interference value corresponding to the first characteristic sequence according to the device information and the interference management reference signal; The first network device is configured to communicate with a user equipment UE using first designated frequency domain resources in a first time slot in a first radio frame when an average interference value corresponding to the first characteristic sequence is greater than a first threshold, and the first network device communicates with the UE using the first frequency domain resources in time slots other than the first time slot in the first radio frame, where the first designated frequency domain resources belong to the first frequency domain resources; The second network device is configured to communicate with the UE using second designated frequency domain resources in a second time slot in a second radio frame, and the second network device communicates with the UE using the second frequency domain resources in a time slot other than the second time slot in the second radio frame, wherein the second designated frequency domain resources belong to the second frequency domain resources; Among them, the first designated frequency domain resources are different from the second designated frequency domain resources; the time domain position of the first time slot in the first wireless frame is the same as the time domain position of the second time slot in the second wireless frame, and the functions of the first time slot and the second time slot are different.

14. An interference coordination system, characterized in that: The method includes a first network device and a second network device, wherein the first network device uses a first time slot configuration and the second network device uses a second time slot configuration, including: The first network device is configured to receive a first characteristic sequence sent by the second network device in a time slot in a first radio frame, where the first characteristic sequence is used to represent device information and an interference management reference signal of the second network device; The first network device is configured to monitor an average interference value corresponding to the first characteristic sequence according to the device information and the interference management reference signal; The first network device is configured to, when an average interference value corresponding to the first characteristic sequence is greater than a first threshold and when communicating with the UE in a first time slot in a first radio frame, not schedule a logical channel on the first time slot or a symbol in the first time slot, and modify a time slot configuration of a third time slot corresponding to the first time slot, where the modified time slot configuration of the third time slot is different from the first time slot configuration; The first network device is configured to communicate with the UE using the first time slot configuration in a first other time slot, where the first other time slot is a time slot other than the first time slot and the third time slot in the first radio frame; The second network device is configured to, when communicating with the UE in a second time slot in a second radio frame, not schedule a logical channel in the second time slot or a symbol in the second time slot, and modify a time slot configuration of a fourth time slot corresponding to the second time slot, where the modified time slot configuration of the fourth time slot is different from the second time slot configuration; The second network device is configured to communicate with the UE using the second time slot configuration in a second other time slot, where the second other time slot is a time slot other than the second time slot and the fourth time slot in the second radio frame; The time domain position of the first time slot in the first radio frame is the same as the time domain position of the second time slot in the second radio frame, and the first time slot and the second time slot have different functions.

15. A network device, characterized in that: include: A processor and a memory, the memory being coupled to the processor, the memory being used to store computer program code, the computer program code comprising computer instructions, and when the processor reads the computer instructions from the memory, the network device executes the interference coordination method according to any one of claims 1 to 3.

16. A computer program product, characterized in that When the computer program product runs on a computer, the computer is enabled to execute the interference coordination method according to any one of claims 1 to 3.

17. A computer-readable storage medium, characterized in that The method comprises computer instructions, which, when executed on a terminal, enable the network device to execute the interference coordination method according to any one of claims 1 to 3.

18. A chip system, characterized in that: The method comprises one or more processors. When the one or more processors execute instructions, the one or more processors perform the interference coordination method according to any one of claims 1 to 3.

19. A network device, characterized in that: include: A processor and a memory, the memory being coupled to the processor, the memory being used to store computer program code, the computer program code comprising computer instructions, and when the processor reads the computer instructions from the memory, the network device executes the interference coordination method according to any one of claims 4 to 6.

20. A computer program product, characterized in that When the computer program product runs on a computer, it enables the computer to execute the interference coordination method according to any one of claims 4 to 6.

21. A computer-readable storage medium, characterized in that The method comprises computer instructions, which, when executed on a terminal, enable the network device to execute the interference coordination method according to any one of claims 4 to 6.

22. A chip system, characterized in that: The method comprises one or more processors. When the one or more processors execute instructions, the one or more processors perform the interference coordination method according to any one of claims 4 to 6.

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