CN113438674B

CN113438674B - Method and device for reducing control channel cross link interference

Info

Publication number: CN113438674B
Application number: CN202110705356.5A
Authority: CN
Inventors: 刘英男; 张涛; 李福昌
Original assignee: China United Network Communications Group Co Ltd
Current assignee: China United Network Communications Group Co Ltd
Priority date: 2021-06-24
Filing date: 2021-06-24
Publication date: 2022-08-12
Anticipated expiration: 2041-06-24
Also published as: CN113438674A

Abstract

The embodiment of the application provides a method and a device for reducing control channel cross link interference, which are applied to access network equipment, relate to the technical field of communication and solve the technical problem that no method for reasonably and effectively reducing the control channel cross link interference exists at present. The method for reducing the cross-link interference of the control channel comprises the following steps: determining a target time slot interfered by a cross link; determining an interference influence parameter of the control channel according to the resource occupation information and the time slot interference information of the control channel; under the condition that the received noise power corresponding to the target time slot meets a preset threshold range, adjusting equipment parameters according to the interference influence parameters; the device parameters include: at least one of a target power of a detection threshold of the control channel or a target channel quality of the control channel.

Description

Method and device for reducing control channel cross link interference

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for reducing cross-link interference of a control channel.

Background

In a Time Division Duplex (TDD) system, there are diversified network application scenarios. In order to adapt to diversified network application scenarios, different time-frequency resources need to be configured for access network devices in different network application scenarios. However, if time-frequency resources configured differently between two adjacent access network devices are used, severe cross interference between the adjacent access network devices may be caused.

At present, the method for processing the serious cross interference between the adjacent access network devices mainly comprises: physical isolation or closed interference slot method. However, physical isolation has a large scenario limitation in real-world implementation; the method for closing the interference time slot can limit the downlink capacity of the access network equipment covering the cell, and reduces the resource utilization rate.

Disclosure of Invention

The application provides a method and a device for reducing control channel cross link interference, which solve the technical problem that no method for reasonably and effectively reducing the control channel cross link interference exists at present.

In order to achieve the purpose, the technical scheme is as follows:

in a first aspect, a method for reducing control channel cross-link interference is provided, including: determining a target time slot interfered by a cross link; determining an interference influence parameter of the control channel according to the resource occupation information and the time slot interference information of the control channel; under the condition that the received noise power corresponding to the target time slot meets a preset threshold range, adjusting equipment parameters according to the interference influence parameters; the device parameters include: at least one of a target power of a detection threshold of the control channel or a target channel quality of the control channel.

It can be known from the above that, when reducing the interference of the control channel cross link, the target timeslot interfered by the cross link may be determined first, and then the interference influence parameter of the control channel may be determined according to the resource occupation information and the timeslot interference information of the control channel. Subsequently, under the condition that the received noise power corresponding to the target time slot meets different threshold ranges, different device parameters can be adjusted according to the interference influence parameters. Therefore, different equipment parameters are adjusted according to the received noise power corresponding to the target time slot, and the control channel cross link interference can be reasonably and effectively reduced. In the process of reducing the interference of the control channel cross link, the limitation of a site is not needed, and the resource utilization rate is improved.

In a second aspect, an apparatus for reducing control channel cross-link interference is provided, including: a determining unit and an adjusting unit; the determining unit is used for determining a target time slot interfered by a cross link; the determining unit is further configured to determine an interference influence parameter of the control channel according to resource occupation information and timeslot interference information of the control channel; the adjusting unit is configured to adjust a device parameter according to the interference influence parameter when the received noise power corresponding to the target timeslot meets a preset threshold range; the device parameters include: at least one of a target power of a detection threshold of the control channel or a target channel quality of the control channel.

In a third aspect, an apparatus for reducing control channel cross-link interference is provided that includes a memory and a processor. The memory is used for storing computer execution instructions, and the processor is connected with the memory through a bus. When the apparatus for reducing control channel cross-link interference is in operation, the processor executes computer-executable instructions stored in the memory to cause the apparatus for reducing control channel cross-link interference to perform the method for reducing control channel cross-link interference according to the first aspect.

The apparatus for reducing the control channel cross link interference may be a network device, or may be a part of an apparatus in a network device, such as a system on chip in a network device. The system on chip is configured to support the network device to implement the functions involved in the first aspect and any one of the possible implementations thereof, for example, to receive, determine, and shunt data and/or information involved in the above method for reducing control channel cross link interference. The chip system includes a chip and may also include other discrete devices or circuit structures.

In a fourth aspect, a computer-readable storage medium is provided, which comprises computer-executable instructions, which when executed on a computer, cause the computer to perform the method for reducing control channel cross-link interference according to the first aspect.

In a fifth aspect, there is provided a computer program product comprising computer instructions which, when run on a computer, cause the computer to perform the method of reducing control channel cross-link interference as described in the first aspect above and its various possible implementations.

It should be noted that all or part of the above computer instructions may be stored on the first computer readable storage medium. The first computer readable storage medium may be packaged together with or separately from a processor of an apparatus for reducing control channel cross-link interference, which is not limited in this application.

For the description of the second, third, fourth and fifth aspects of the present invention, reference may be made to the detailed description of the first aspect; in addition, for the beneficial effects described in the second aspect, the third aspect, the fourth aspect and the fifth aspect, reference may be made to beneficial effect analysis of the first aspect, and details are not repeated here.

In the present application, the names of the above-mentioned apparatuses for reducing control channel cross link interference do not limit the devices or functional modules themselves, and in practical implementations, these devices or functional modules may appear by other names. Insofar as the functions of the respective devices or functional blocks are similar to those of the present invention, they are within the scope of the claims of the present invention and their equivalents.

These and other aspects of the invention will be more readily apparent from the following description.

Drawings

Fig. 1 is a schematic structural diagram of a communication system according to an embodiment of the present application;

fig. 2 is a schematic hardware structure diagram of an apparatus for reducing control channel cross link interference according to an embodiment of the present application;

fig. 3 is a schematic hardware structure diagram of another apparatus for reducing control channel cross-link interference according to an embodiment of the present disclosure;

fig. 4 is a flowchart illustrating a method for reducing cross-link interference of control channels according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of an apparatus for reducing control channel cross-link interference according to an embodiment of the present disclosure.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that in the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described herein as "exemplary" or "such as" is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

For the convenience of clearly describing the technical solutions of the embodiments of the present application, in the embodiments of the present application, the terms "first" and "second" are used to distinguish the same items or similar items with basically the same functions and actions, and those skilled in the art can understand that the terms "first" and "second" are not used to limit the quantity and execution order.

As described in the background art, the method for handling the severe cross interference between adjacent access network devices mainly includes: physical isolation or closed interference slot method. However, physical isolation has a large scenario limitation in real-world implementation; the method for closing the interference time slot can limit the downlink capacity of the access network equipment covering the cell, and reduces the resource utilization rate.

In order to solve the above problem, an embodiment of the present application provides a method for reducing interference of a control channel cross link, where when reducing interference of the control channel cross link, a target timeslot interfered by the cross link may be determined first, and then an interference influence parameter of the control channel is determined according to resource occupation information and timeslot interference information of the control channel. Subsequently, under the condition that the received noise power corresponding to the target time slot meets different threshold ranges, different device parameters can be adjusted according to the interference influence parameters. Therefore, different equipment parameters are adjusted according to the received noise power corresponding to the target time slot, and the control channel cross link interference can be reasonably and effectively reduced. In the process of reducing the interference of the control channel cross link, the limitation of a site is not needed, and the resource utilization rate is improved.

The method for reducing the cross-link interference of the control channel provided by the embodiment of the application is suitable for the communication system 10. Fig. 1 shows one configuration of the communication system 10. As shown in fig. 1, the communication system 10 includes: an access network device 11 and a plurality of terminals 12.

The plurality of terminals 12 are located in a cell covered by the access network device 11, and the access network device 11 is in communication connection with the plurality of terminals 12 through a communication frequency band.

In practical applications, the access network device 11 may connect a plurality of terminals.

It should be noted that fig. 1 is only an exemplary framework diagram, the number of nodes included in fig. 1 is not limited, and other nodes may be included besides the functional nodes shown in fig. 1, such as: core network devices, gateway devices, application servers, etc., without limitation.

The access network device 11 in the embodiment of the present application is mainly used for implementing functions of resource scheduling, radio resource management, radio access control, and the like of the terminal. Specifically, the Access network device 11 may be an Access Point (AP), an evolved Node Base Station (eNB), or a Base Station in the5Generation Mobile Communication Technology (5G) network, which is not limited in this embodiment.

Alternatively, terminal 12 in FIG. 1 may refer to a device that provides voice and/or data connectivity to a user, a handheld device having wireless connection capability, or other processing device connected to a wireless modem. A wireless terminal may communicate with one or more core networks via a Radio Access Network (RAN). The wireless terminals may be mobile terminals such as mobile phones (or "cellular" phones) and computers with mobile terminals, as well as portable, pocket, hand-held, computer-included, or vehicle-mounted mobile devices that exchange language and/or data with a wireless access network, such as cell phones, tablets, laptops, netbooks, Personal Digital Assistants (PDAs).

The access network equipment 11 and the plurality of terminals 12 in fig. 1 comprise the elements comprised by the apparatus for reducing control channel cross-link interference shown in fig. 2. The hardware structure of the access network device 11 and the plurality of terminals 12 in fig. 1 will be described below by taking the apparatus for reducing control channel cross-link interference shown in fig. 2 as an example.

Fig. 2 is a schematic diagram illustrating a hardware structure of an apparatus for reducing control channel cross-link interference according to an embodiment of the present application. As shown in fig. 2, the apparatus for reducing control channel cross-link interference includes a processor 21, a memory 22, a communication interface 23, and a bus 24. The processor 21, the memory 22 and the communication interface 23 may be connected by a bus 24.

The processor 21 is a control center of an apparatus for reducing control channel cross link interference, and may be a single processor or a collective term for a plurality of processing elements. For example, the processor 21 may be a Central Processing Unit (CPU), other general-purpose processors, or the like. Wherein a general purpose processor may be a microprocessor or any conventional processor or the like.

For one embodiment, processor 21 may include one or more CPUs, such as CPU 0 and CPU 1 shown in FIG. 2.

The memory 22 may be, but is not limited to, a read-only memory (ROM) or other type of static storage device that may store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that may store information and instructions, an electrically erasable programmable read-only memory (EEPROM), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.

In a possible implementation, the memory 22 may exist separately from the processor 21, and the memory 22 may be connected to the processor 21 via a bus 24 for storing instructions or program codes. The processor 21, when invoking and executing instructions or program code stored in the memory 22, is capable of implementing the method for reducing control channel cross-link interference provided by embodiments of the present invention.

In another possible implementation, the memory 22 may also be integrated with the processor 21.

And a communication interface 23 for connecting with other devices through a communication network. The communication network may be an ethernet network, a radio access network, a Wireless Local Area Network (WLAN), or the like. The communication interface 23 may include a receiving unit for receiving data, and a transmitting unit for transmitting data.

The bus 24 may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 2, but that does not indicate only one bus or one type of bus.

It is noted that the structure shown in fig. 2 does not constitute a limitation of the means for reducing control channel cross-link interference. The means for reducing control channel cross-link interference may include more or fewer components than shown, or some components may be combined, or a different arrangement of components than shown, in addition to the components shown in fig. 2.

Fig. 3 shows another hardware structure of the apparatus for reducing control channel cross-link interference in the embodiment of the present application. As shown in fig. 3, the apparatus for reducing control channel cross-link interference may include a processor 31 and a communication interface 32. The processor 31 is coupled to a communication interface 32.

The function of the processor 31 may refer to the description of the processor 21 above. The processor 31 also has a memory function, and the function of the memory 22 can be referred to.

The communication interface 32 is used to provide data to the processor 31. The communication interface 32 may be an internal interface of a device that reduces control channel cross-link interference, or may be an external interface (corresponding to the communication interface 23) of a device that reduces control channel cross-link interference.

It is noted that the structure shown in fig. 2 (or fig. 3) does not constitute a limitation of the apparatus for reducing control channel cross-link interference, and the apparatus for reducing control channel cross-link interference may include more or less components than those shown in fig. 2 (or fig. 3), or combine some components, or arrange different components, in addition to the components shown in fig. 2 (or fig. 3).

The method for reducing the control channel cross link interference provided by the embodiment of the present application is described in detail below with reference to the communication system shown in fig. 1 and the apparatus for reducing the control channel cross link interference shown in fig. 2 (or fig. 3).

Fig. 4 is a flowchart illustrating a method for reducing cross-link interference of a control channel according to an embodiment of the present application. As shown in fig. 4, the method for reducing the control channel cross-link interference includes the following steps S401 to S403.

S401, the access network equipment determines a target time slot interfered by a cross link.

Specifically, the physical channel adopts a 4-layer structure including a system frame number, a radio frame, a subframe and a time slot/code. The configuration structure of the subframe or the slot/code may be different according to the resource allocation scheme. The system uses time slots and spreading codes to distinguish different user signals in the time and code domains.

The physical channel in TDD mode consists of bursts (bursts) that are transmitted only in specific time slots in the allocated radio frame. The allocation of radio frames may be continuous (i.e., time slots of each frame are allocated to physical channels) or discontinuous (i.e., only a portion of the radio frames are allocated to physical channels).

Except for the downlink pilot (DwPTS) and uplink access (UpPTS) bursts, all other bursts used for information transmission have the same structure, i.e., consist of 2 data parts, 1 midamble code, and 1 guard time slice. The data portions are symmetrically distributed at both ends of the training sequence. The duration of 1 burst is defined as 1 slot. The 1 transmitter can transmit a plurality of bursts at the same time and on the same frequency to correspond to different channels in the same time slot, and different channels use different OVSF channelization codes to realize the code division of the physical channel.

In TD-SCDMA systems, each cell typically uses 1 basic midamble code. The basic midamble code is subjected to cyclic shift with equal length (the length depends on the number of users in the same time slot), and a series of midambles can be obtained. Different users of the same slot will use different midamble shifts. Therefore, 1 physical channel is defined by a plurality of parameters such as frequency, time slot, channel code, midamble shift, and radio frame allocation.

The 3GPP defines 1 TDMA frame length as 10 ms. In order to realize fast power control and timing advance calibration and support for some new technologies (such as smart antennas), the TD-SCDMA system divides 1 frame of 10ms into 2 subframes with identical structures, and the duration of each subframe is 5 ms. Each subframe of 5ms is composed of 3 special slots and 7 normal slots (TS 0-TS 6). The regular time slot is used to transmit user data or control information. Of these 7 conventional timeslots, TS0 is always fixedly used as the downlink timeslot for transmitting system broadcast information (in a single carrier cell, usually no traffic is carried), and TS1 is always fixedly used as the uplink timeslot. Other conventional time slots can be flexibly configured to be uplink or downlink according to needs to realize the transmission of asymmetric services, such as packet data. Each subframe always starts from TS 0. The time slots used for uplink and the time slots used for downlink are separated by 1 transition point. There are 2 switching points per 5ms subframe, the first one fixed at the end of TS0, and the second one depending on the configuration of the uplink and downlink timeslots of the cell, which may be located at the end of TS1 to TS 6.

The slot structure is also the structure of the burst. The TD-SCDMA system defines 4 slot types, which are DwPTS, UpPTS, GP and TS 0-TS 6. The DwPTS and the UpPTS are respectively used for uplink synchronization and downlink synchronization, user data is not carried, GP is used for propagation delay protection in the uplink synchronization establishing process, and TS 0-TS 6 are used for carrying user data or control information.

In the embodiment of the application, the access network device needs to screen out the interference time slot before reducing the interference, if the interference time slot cannot be screened out, it is determined that the interference of the access network device does not need to be processed, that is, the access network device can firstly judge whether the interference of the access network device needs to be processed before processing the interference, so that the interference processing of the access network device can be more actually fitted, and the interference of the access network device can be better processed.

Thus, the access network device first determines the target time slot that is subject to cross-link interference.

When determining a target time slot interfered by a cross link, firstly, a plurality of uplink time slots in a frame of access network equipment are determined, and the received noise power of each uplink time slot in the plurality of uplink time slots is determined.

The access network equipment sends a plurality of frames in a preset time period; each of the plurality of frames includes a plurality of time slots.

Illustratively, the access network device sends M frames within a preset time period, where each of the M frames includes N uplink timeslots, and the uplink timeslots in each frame have the same position.

Optionally, since the positions of the uplink timeslots in each frame are the same, the received noise power corresponding to the target timeslot may be an average of the received noise powers of a plurality of timeslots having the same position as the target timeslot in the plurality of frames.

As a further alternative, the received noise power corresponding to the target timeslot may also be the received noise power of the target timeslot.

With reference to the above example, the received noise power corresponding to any two timeslots may be the received noise power of any two uplink timeslots in the N uplink timeslots.

Any two time slots are preset as a first time slot and a second time slot.

When determining the target timeslot interfered by the cross link, a received noise power corresponding to a first timeslot and a received noise power corresponding to a second timeslot in the plurality of timeslots may be determined first.

Optionally, when determining the received noise power corresponding to the first time slot, the received noise power of the first time slot may be determined as the received noise power corresponding to the first time slot; the average value of the received noise power corresponding to the first time slot may also be determined as the received noise power corresponding to the first time slot; other received noise power corresponding to the first time slot may also be determined as the received noise power corresponding to the first time slot, which is not limited in this disclosure.

Correspondingly, when the received noise power corresponding to the second time slot is determined, the received noise power of the second time slot may be determined as the received noise power corresponding to the second time slot; or determining the average value of the received noise power corresponding to the second time slot as the received noise power corresponding to the second time slot; other received noise power corresponding to the second time slot may also be determined as the received noise power corresponding to the second time slot, which is not limited by the present disclosure.

When the received noise power corresponding to any two time slots is the received noise power of any two uplink time slots in the N uplink time slots, if the difference value between the received noise power of the first time slot and the received noise power of the second time slot meets the preset difference value, and the received noise power corresponding to the first time slot is greater than the first threshold value, determining the first time slot as the target time slot.

Alternatively, the first time slot or the second time slot may also be an average of received noise powers of the a-th uplink time slot of each of the M frames.

It should be noted that a, M, N are positive integers, and a is not more than N.

Illustratively, the preset first time slot is an ith uplink time slot of the N uplink time slots, and the second time slot is a jth uplink time slot of the N uplink time slots. Wherein i and j are positive integers, i is less than or equal to N, and j is less than or equal to N.

When the first time slot or the second time slot may also be an average value of the received noise power of the a-th uplink time slot of each of the M frames, the received noise power P of the i-th uplink time slot _i Is the average value of the received noise power of the ith uplink time slot of each frame in the M frames in the preset time period. Correspondingly, the received noise power P of the j-th uplink time slot _j Is the average value of the received noise power of the jth uplink time slot of each frame in the M frames in the preset time period.

Exemplary, P _i And P _j Can be obtained as shown in table 1 below.

TABLE 1

It should be noted that the acquisition time stamp in table 1 constitutes a preset time period for acquiring uplink received noise power.

After the average value of the received noise power of the ith uplink time slot and the average value of the received noise power of the jth uplink time slot are determined, if the difference value between the average value of the received noise power of the ith uplink time slot and the average value of the received noise power of the jth uplink time slot meets a preset difference value, and the average value of the received noise power of the ith uplink time slot is greater than a first threshold value, determining the ith uplink time slot as a target time slot.

S402, the access network equipment determines the interference influence parameters of the control channel according to the resource occupation information and the time slot interference information of the control channel.

In particular, the control channel carries encoded voice or user data. If the control channel multiplexes the signaling of associated channels, the signaling is called control channel message. The signaling transmitted on the control channel is in units of frames, which are similar in structure to the synchronization channel.

When determining the interference influence parameter of the control channel, the access network device may obtain the resource occupation information and the time slot interference information of the control channel, and determine the interference influence parameter of the control channel according to the resource occupation information and the time slot interference information of the control channel.

Wherein, the resource occupation information of the control channel comprises: controlling the number of resources occupied by the channel on each time slot; the time slot interference information comprises: a number of the plurality of target time slots and a number of the plurality of target time slots; and one target time slot is used for indicating that the received noise power corresponding to the target time slot is larger than the first threshold value.

Optionally, when determining the interference impact parameter of the control channel, the access network device may determine the interference impact parameter of the control channel according to the number of resources occupied by the control channel on each time slot, the number of the plurality of target time slots, and the number of the plurality of target time slots; or determining the interference influence parameter of the control channel according to the average value of the number of resources occupied by the controlled channel in each target time slot in the plurality of target time slots, the plurality of target time slots and the number of the plurality of target time slots; the interference influencing parameter of the control channel may also be determined by other algorithms or parameters, which are not limited by this disclosure.

For example, the access network device determines the interference influence parameter of the control channel according to the average value of the number of resources occupied by the controlled channel in each target time slot in the plurality of target time slots, and the number of the plurality of target time slots.

t _i The average value of the number of time-frequency resources occupied by at least one terminal device in the ith uplink time slot is obtained; t is t _j The average value of the number of time-frequency resources occupied by at least one terminal device in the jth uplink time slot is obtained. t is t _i And t _j As shown in table 2 below.

TABLE 2

It should be noted that the acquisition time stamps in table 2 constitute a preset time period for acquiring the number of resources occupied by at least one terminal device in an uplink time slot when the terminal device accesses a channel.

In this case, the resource occupation information of the control channel, the slot interference information, and the interference influence parameter of the control channel satisfy a first formula, where the first formula is:

q is an interference influence parameter; i is the ith target time slot; p _i The received noise power of the ith target time slot; p _SL Is a first threshold value; t is t _i The average value of the number of resources occupied by the controlled channel in each time slot in the ith target time slot is obtained; r is the number of target time slots; wherein the content of the first and second substances,i and r are positive integers, and i is not more than r.

And S403, the access network equipment determines and adjusts the equipment parameters according to the interference influence parameters under the condition that the received noise power corresponding to the target time slot meets the preset threshold range.

Wherein the device parameters include: at least one of a target power of a detection threshold of the control channel or a target channel quality of the control channel.

Specifically, when the received noise power corresponding to the target timeslot meets a preset threshold range, the device parameters are determined to be adjusted according to the interference impact parameters, and the total number of the adjusted device parameters is divided into the following 4 cases:

case a:

when the received noise power corresponding to the target timeslot is greater than the first threshold and less than or equal to the second threshold, the access network device may determine the target bias power of the target power of the detection threshold of the control channel according to the interference influence parameter.

Wherein the interference impact parameter and the target bias power satisfy a second formula; the second formula is:

P _c is a target bias power; p _cl Is the lowest target bias power value, P _ch Is the highest target bias power value, P _SL Is a first threshold value; p _SH Is a second threshold value; q is an interference influencing parameter.

In addition, the above P _cl 、P _ch 、P _SH Are all preset by operators according to actual conditions. Exemplary, P _cl May be 2 dB; p is _ch May be 10 dB; p _SH May be-95 dBm.

Subsequently, the access network equipment adjusts the target power of the detection threshold of the control channel according to the target bias power, and the adjusted target power is as follows: the sum of the target bias power and the initial power of the detection threshold of the control channel.

As can be seen from the above, when the uplink timeslot of the access network device receives a relatively strong interference (that is, the received noise power corresponding to the target timeslot is greater than the first threshold and less than or equal to the second threshold), the access network device may reduce the interference by increasing the target power of the detection threshold of the control channel, but the target power of the detection threshold of the control channel of the access network device cannot be increased without limitation, and if the target power is increased continuously, other indicators (e.g., the network speed) may be affected. Therefore, the target power of the detection threshold of the control channel of the access network device needs to be adjusted within a certain range, and the target power of the detection threshold of the control channel of the adjusted access network device cannot exceed the maximum target power of the access network device.

In this way, the access network device may adjust the target power of the detection threshold of the control channel of the access network device according to the target bias power. The target power of the detection threshold of the adjusted control channel is as follows: the sum of the target bias power and the initial power of the detection threshold of the control channel. Therefore, the access network equipment can effectively reduce the interference on the uplink time slot by adjusting the target power of the detection threshold of the control channel of the access network equipment.

Case b:

when the received noise power corresponding to the target time slot is greater than the second threshold, the access network equipment adjusts the target power of the detection threshold of the control channel according to the highest target offset power value, wherein the adjusted target power is as follows: the sum of the highest target offset power value and the initial power of the detection threshold for the control channel.

It can be known from the above that the target power of the detection threshold of the control channel of the access network device cannot be increased without limitation, and further it can be known that the target bias power of the access network device cannot be increased without limitation, therefore, when the received noise power of the target timeslot is greater than the second threshold, the access network device can directly use the highest target bias power value of the access network device as the target bias power of the access network device, and continuously increase the target bias power of the access network device according to the second formula, so that the operation of increasing the target bias power of the access network device does not cause too great influence on other indexes of the access network device, and further the stability of the network is ensured to a certain extent.

In this way, the access network device may adjust the target power of the detection threshold of the control channel of the access network device according to the target bias power. The target power of the adjusted detection threshold of the control channel is the sum of the target power of the initial detection set by the access network equipment and the target bias power. Therefore, the target bias power is the sum of the highest target bias power value and the initial power of the detection threshold of the control channel, so that the operation of increasing the target bias power of the access network equipment does not cause great influence on other indexes of the access network equipment, and the stability of the network is further ensured to a certain extent.

Case c:

and when the received noise power corresponding to the target time slot is greater than the third threshold and less than or equal to the fourth threshold, the access network equipment determines the bias value of the target channel quality of the control channel according to the interference influence parameter.

The offset values of the interference influence parameters and the target channel quality of the control channel satisfy a third formula; the third formula is:

Offset _MCS is a bias value; m _l Is the adjusted lowest bias value; m _h Is the adjusted highest bias value; p _SM Is a third threshold; p _SN Is a fourth threshold; q is an interference influence parameter;

to round-down operations.

In addition, M is as defined above _l 、M _h 、P _SM 、P _SN Are all preset by operators according to actual conditions. Exemplary, M _l Can be 2, M _h May be 25; p _SM Can be-95 dBm, P _SN May be-75 dBm.

Subsequently, the access network equipment adjusts the target channel quality of the control channel according to the offset value, and the adjusted target channel quality is as follows: the offset value is summed with the initial target signal and interference-to-noise ratio value of the control channel.

Wherein, the initial target signal and interference noise ratio of the control channel is determined by the BLER requirements of different transmission format contents of the PUCCH and the demodulation capability of the base station.

As can be seen from the above, when the uplink timeslot of the access network device receives relatively strong interference (the received noise power corresponding to the target timeslot is greater than the third threshold and less than or equal to the fourth threshold), the target channel quality of the control channel of the access network device may be increased to reduce the interference, and improve the reliability of the access network device. However, the target channel quality of the control channel of the access network device cannot be greatly improved, for example, if the target channel quality of the control channel of the access network device is greatly improved, other indexes (for example, the network speed) may be affected. Therefore, adjustment of the offset value of the access network device needs conservative adjustment, and the target channel quality of the control channel of the adjusted access network device does not exceed the allowable range of the system uplink control channel SINR.

In this way, the access network device can adjust the target channel quality of the control channel according to the offset value. The target channel quality of the adjusted control channel is the sum of the offset value and the initial target signal and interference noise ratio of the control channel. Therefore, the access network equipment can effectively reduce the interference on the uplink time slot of the access network equipment by adjusting the target channel quality of the control channel.

Case d:

when the received noise power corresponding to the target time slot is greater than the fourth threshold, the access network equipment adjusts the target channel quality of the control channel according to the adjusted highest offset value, wherein the adjusted target channel quality is as follows: the adjusted highest offset value is summed with the initial target signal and interference-to-noise ratio value of the control channel.

Therefore, when the received noise power of the target time slot is greater than the fourth threshold, the access network device can directly set the adjusted highest offset value of the access network device as the offset value of the access network device, and continuously increases the offset value of the access network device according to the third formula, so that the operation of increasing the offset value of the access network device does not cause too great influence on other indexes of the access network device, and further, the stability of the network is ensured to a certain extent.

In this way, the access network device can adjust the target channel quality of the control channel according to the offset value. The adjusted target channel quality of the control channel is the sum of the adjusted maximum bias value and the initial target signal to interference noise ratio of the control channel. In this way, since the offset value is the adjusted highest offset value, the operation of increasing the target offset power of the access network device does not have a great influence on other indexes of the access network device, thereby ensuring the stability of the network to a certain extent.

The application provides a method for reducing cross link interference of a control channel, which comprises the following steps: determining a target time slot interfered by a cross link; determining an interference influence parameter of the control channel according to the resource occupation information and the time slot interference information of the control channel; under the condition that the received noise power corresponding to the target time slot meets a preset threshold range, adjusting equipment parameters according to the interference influence parameters; the device parameters include: at least one of a target power of a detection threshold of the control channel or a target channel quality of the control channel.

As can be seen from the above, when reducing the interference of the control channel cross link, the target timeslot interfered by the cross link may be determined first, and then the interference influence parameter of the control channel may be determined according to the resource occupation information and timeslot interference information of the control channel. Subsequently, under the condition that the received noise power corresponding to the target time slot meets different threshold ranges, different device parameters can be adjusted according to the interference influence parameters. Therefore, different equipment parameters are adjusted according to the received noise power corresponding to the target time slot, and the control channel cross link interference can be reasonably and effectively reduced. In the process of reducing the interference of the control channel cross link, the limitation of a site is not needed, and the resource utilization rate is improved.

The scheme provided by the embodiment of the application is mainly introduced from the perspective of a method. In order to implement the above functions, it includes a hardware structure and/or a software module for performing each function. Those of skill in the art will readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

In the embodiment of the present application, the functional modules of the apparatus for reducing interference of control channel cross links may be divided according to the above method example, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. Optionally, the division of the modules in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation.

Fig. 5 is a schematic structural diagram of an apparatus 50 for reducing cross-link interference of control channels according to an embodiment of the present application. The apparatus 50 for reducing control channel cross-link interference is used to solve the technical problem that there is no reasonable and effective method for reducing control channel cross-link interference currently, for example, the method for reducing control channel cross-link interference shown in fig. 4 is implemented. The apparatus 50 for reducing cross-link interference of control channels comprises: a determining unit and an adjusting unit;

and the determining unit is used for determining the target time slot interfered by the cross link. For example, in connection with fig. 4, the determination unit is configured to perform S401.

And the determining unit is further used for determining the interference influence parameters of the control channel according to the resource occupation information and the time slot interference information of the control channel. For example, in connection with fig. 4, the determining unit 501 is configured to perform S402.

An adjusting unit 502, configured to adjust a device parameter according to the interference impact parameter when the received noise power corresponding to the target timeslot meets a preset threshold range; the device parameters include: at least one of a target power of a detection threshold of the control channel or a target channel quality of the control channel. For example, in conjunction with fig. 4, the adjusting unit 502 is configured to execute S403.

Optionally, the access network device sends multiple frames within a preset time period; each of the plurality of frames includes a plurality of time slots;

the determining unit 501 is specifically configured to:

determining the received noise power corresponding to a first time slot and the received noise power corresponding to a second time slot in a plurality of time slots; the first time slot and the second time slot are any two time slots in the plurality of time slots;

and if the difference value between the received noise power corresponding to the first time slot and the received noise power corresponding to the second time slot meets the preset difference value, and the received noise power corresponding to the first time slot is greater than the first threshold, determining the first time slot as the target time slot.

Optionally, the positions of the timeslots in each frame are the same; the received noise power corresponding to the target time slot is the received noise power of the target time slot or the average value of the received noise powers of a plurality of time slots with the same position as the target time slot in a plurality of frames.

Optionally, the resource occupation information of the control channel includes: controlling the number of resources occupied by the channel on each time slot;

the time slot interference information comprises: a number of the plurality of target time slots and a number of the plurality of target time slots;

the determining unit 501 is specifically configured to:

the resource occupation information, the time slot interference information and the interference influence parameter of the control channel satisfy a first formula, and the first formula is as follows:

q is an interference influence parameter; i is the ith target time slot; p _i The received noise power of the ith target time slot; p _SL Is a first threshold value; t is t _i The average value of the number of resources occupied by the controlled channel in each time slot in the ith target time slot is obtained; r is the number of target time slots; wherein i and r are positive integers, and i is not more than r.

Optionally, when the received noise power corresponding to the target timeslot is greater than the first threshold and less than or equal to the second threshold, the adjusting unit 502 is specifically configured to:

determining a target bias power of a target power of a detection threshold of a control channel according to the interference influence parameters;

the interference influence parameter and the target bias power satisfy a second formula; the second formula is:

P _c is a target bias power; p _cl Is the lowest target bias power value, P _ch Is the highest target bias power value, P _SL Is a first threshold value; p _SH Is a second threshold value; q is an interference influence parameter;

adjusting the target power of the detection threshold of the control channel according to the target bias power, wherein the adjusted target power is as follows: the sum of the target bias power and the initial power of the detection threshold of the control channel.

Optionally, when the received noise power corresponding to the target timeslot is greater than the second threshold, the adjusting unit 502 is specifically configured to: and adjusting the target power of the detection threshold of the control channel according to the highest target offset power value, wherein the adjusted target power is as follows: the sum of the highest target offset power value and the initial power of the detection threshold of the control channel.

Optionally, when the received noise power corresponding to the target timeslot is greater than the third threshold and less than or equal to the fourth threshold; the adjusting unit 502 is specifically configured to:

is a rounding-down operation;

and adjusting the target channel quality of the control channel according to the offset value, wherein the adjusted target channel quality is as follows: the offset value is summed with the initial target signal and interference-to-noise ratio value of the control channel.

Optionally, when the received noise power corresponding to the target timeslot is greater than the fourth threshold, the adjusting unit 502 is specifically configured to: and adjusting the target channel quality of the control channel according to the adjusted highest offset value, wherein the adjusted target channel quality is as follows: the adjusted highest offset value is summed with the initial target signal and interference-to-noise ratio value of the control channel.

Embodiments of the present application also provide a computer-readable storage medium, which includes computer-executable instructions. When the computer executes the instructions to run on the computer, the computer executes the steps executed by the device for reducing the control channel cross link interference in the method for reducing the control channel cross link interference provided by the embodiment.

The embodiments of the present application further provide a computer program product, where the computer program product is directly loadable into a memory and contains software codes, and the computer program product is loaded into and executed by a computer, so as to implement the steps executed by the apparatus for reducing control channel cross-link interference in the method for reducing control channel cross-link interference provided in the foregoing embodiments.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented using a software program, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. The processes or functions according to the embodiments of the present application are generated in whole or in part when the computer-executable instructions are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). Computer-readable storage media can be any available media that can be accessed by a computer or can comprise one or more data storage devices, such as servers, data centers, and the like, that can be integrated with the media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

Through the description of the foregoing embodiments, it will be clear to those skilled in the art that, for convenience and simplicity of description, only the division of the functional modules is illustrated, and in practical applications, the above function distribution may be completed by different functional modules as needed, that is, the internal structure of the apparatus may be divided into different functional modules to complete all or part of the above described functions.

In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules or units is only one logical function division, and there may be other division ways in actual implementation. For example, various elements or components may be combined or may be integrated into another device, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form. Units described as separate parts may or may not be physically separate, and parts displayed as units may be one physical unit or a plurality of physical units, may be located in one place, or may be distributed to a plurality of different places. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit. The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application may be essentially or partially contributed to by the prior art, or all or part of the technical solutions may be embodied in the form of a software product, where the software product is stored in a storage medium and includes several instructions to enable a device (which may be a single chip, a chip, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A method for reducing cross-link interference of a control channel is applied to access network equipment, and is characterized by comprising the following steps:

determining a target time slot interfered by a cross link;

determining an interference influence parameter of a control channel according to resource occupation information and time slot interference information of the control channel; the resource occupation information of the control channel includes: the number of resources occupied by the control channel on each time slot; the timeslot interference information includes: a number of the plurality of target time slots and the plurality of target time slots; the resource occupation information of the control channel, the time slot interference information and the interference influence parameter of the control channel satisfy a first formula, and the first formula is as follows:

q is the interference impact parameter; the i is the ith target time slot; the P is _i The received noise power of the ith target time slot; the P is _SL Is a first threshold value; said t is _i The average value of the number of resources occupied by the control channel on each time slot in the ith target time slot is obtained; the r is the number of the target time slots; wherein i and r are positive integers, and i is not more than r;

under the condition that the received noise power corresponding to the target time slot meets a preset threshold range, adjusting equipment parameters according to the interference influence parameters; the device parameters include: at least one of a target power of a detection threshold of the control channel or a target channel quality of the control channel.

2. The method of claim 1, wherein the access network device transmits a plurality of frames within a preset time period; each frame of the plurality of frames comprises a plurality of time slots;

the determining the target time slot interfered by the cross link comprises:

determining a received noise power corresponding to a first time slot and a received noise power corresponding to a second time slot in the plurality of time slots; the first time slot and the second time slot are any two time slots in the plurality of time slots;

and if the difference value between the received noise power corresponding to the first time slot and the received noise power corresponding to the second time slot meets a preset difference value, and the received noise power corresponding to the first time slot is greater than the first threshold, determining the first time slot as the target time slot.

3. The method of claim 2, wherein the position of the time slot in each frame is the same; the received noise power corresponding to the target time slot is the received noise power of the target time slot or the average value of the received noise powers of a plurality of time slots with the same position as the target time slot in the plurality of frames.

4. The method of claim 1, wherein when the received noise power corresponding to the target timeslot is greater than the first threshold and less than or equal to a second threshold, the adjusting the device parameter according to the interference impact parameter comprises:

determining a target bias power of a target power of a detection threshold of the control channel according to the interference influence parameter;

the interference affecting parameter and the target bias power satisfy a second formula; the second formula is:

the P is _c Is the target bias power; said P is _cl Is the lowest target bias power value, P _ch For the highest target bias power value, P _SL Is the first thresholdA value; p _SH Is the second threshold; q is the interference impact parameter;

adjusting the target power of the detection threshold of the control channel according to the target bias power, wherein the adjusted target power is as follows: a sum of the target bias power and an initial power of a detection threshold of the control channel.

5. The method of claim 4, wherein when the received noise power corresponding to the target timeslot is greater than the second threshold value,

the adjusting the device parameter according to the interference influence parameter includes:

adjusting the target power of the detection threshold of the control channel according to the highest target offset power value, wherein the adjusted target power is as follows: a sum of the highest target offset power value and an initial power of a detection threshold of the control channel.

6. The method of claim 1, wherein when the received noise power corresponding to the target timeslot is greater than a third threshold, and less than or equal to a fourth threshold; the adjusting the device parameter according to the interference influence parameter includes:

the interference impact parameter and the bias value of the target channel quality of the control channel satisfy a third formula; the third formula is:

the Offset _MCS Is the bias value; the M is _l Is the adjusted lowest bias value; the M is _h Is the adjusted highest bias value; said P is _SM Is the third threshold; p _SN Is the fourth threshold; q is the interference impact parameter; floor () is a round-down operation;

adjusting the target channel quality of the control channel according to the offset value, wherein the adjusted target channel quality is as follows: the offset value is summed with an initial target signal and interference noise ratio value for the control channel.

7. The method of claim 6, wherein when the received noise power corresponding to the target timeslot is greater than the fourth threshold, the adjusting the device parameter according to the interference impact parameter comprises:

adjusting the target channel quality of the control channel according to the adjusted highest bias value, wherein the adjusted target channel quality is as follows: the adjusted highest bias value is summed with an initial target signal to interference noise ratio value for the control channel.

8. An apparatus for reducing cross-link interference of a control channel, applied to an access network device, comprising: a determination unit and an adjustment unit;

the determining unit is used for determining a target time slot interfered by a cross link;

the determining unit is further configured to determine an interference influence parameter of the control channel according to resource occupation information and timeslot interference information of the control channel; the resource occupation information of the control channel comprises: the number of resources occupied by the control channel on each time slot; the timeslot interference information includes: a number of the plurality of target time slots and the plurality of target time slots; the resource occupation information of the control channel, the time slot interference information and the interference influence parameter of the control channel satisfy a first formula, and the first formula is as follows:

q is the interference impact parameter; the i is the ith target time slot; the P is _i The received noise power of the ith target time slot; the P is _SL Is a first threshold value; said t is _i The average value of the number of resources occupied by the control channel on each time slot in the ith target time slot is obtained; the r is the number of the target time slots; wherein i and r are bothIs a positive integer, and i is not more than r;

the adjusting unit is configured to adjust a device parameter according to the interference influence parameter when the received noise power corresponding to the target timeslot meets a preset threshold range; the device parameters include: at least one of a target power of a detection threshold of the control channel or a target channel quality of the control channel.

9. The apparatus of claim 8, wherein the access network device transmits a plurality of frames within a preset time period; each frame of the plurality of frames comprises a plurality of time slots;

the determining unit is specifically configured to:

10. The apparatus of claim 9, wherein the position of the time slot in each frame is the same; the received noise power corresponding to the target time slot is the received noise power of the target time slot or the average value of the received noise powers of a plurality of time slots with the same position as the target time slot in the plurality of frames.

11. The apparatus of claim 8, wherein when the received noise power corresponding to the target timeslot is greater than the first threshold and less than or equal to a second threshold, the adjusting unit is specifically configured to:

the P is _c Is the target bias power; the P is _cl Is the lowest target bias power value, P _ch For the highest target bias power value, P _SL Is the first threshold; p _SH Is the second threshold; q is the interference impact parameter;

and adjusting the target power of the detection threshold of the control channel according to the target bias power, wherein the adjusted target power is as follows: a sum of the target bias power and an initial power of a detection threshold of the control channel.

12. The apparatus according to claim 11, wherein when the received noise power corresponding to the target timeslot is greater than the second threshold, the adjusting unit is specifically configured to: adjusting the target power of the detection threshold of the control channel according to the highest target offset power value, wherein the adjusted target power is as follows: a sum of the highest target offset power value and an initial power of a detection threshold of the control channel.

13. The apparatus of claim 8, wherein when the received noise power corresponding to the target timeslot is greater than a third threshold, and less than or equal to a fourth threshold; the adjusting unit is specifically configured to:

the Offset _MCS Is that it isAn offset value; the M is _l Is the adjusted lowest bias value; the M is _h Is the adjusted highest bias value; the P is _SM Is the third threshold; p _SN Is the fourth threshold; q is the interference impact parameter; floor () is a round-down operation;

14. The apparatus according to claim 13, wherein when the received noise power corresponding to the target timeslot is greater than the fourth threshold, the adjusting unit is specifically configured to: adjusting the target channel quality of the control channel according to the adjusted highest bias value, wherein the adjusted target channel quality is as follows: the adjusted highest bias value is summed with an initial target signal to interference noise ratio value for the control channel.

15. An apparatus for reducing control channel cross-link interference, comprising a memory and a processor; the memory is used for storing computer execution instructions, and the processor is connected with the memory through a bus;

the computer-executable instructions stored by the memory and executed by the processor when the apparatus for reducing control channel cross-link interference is operating cause the apparatus for reducing control channel cross-link interference to perform the method for reducing control channel cross-link interference as set forth in any one of claims 1-7.

16. A computer-readable storage medium comprising computer-executable instructions that, when executed on a computer, cause the computer to perform the method for reducing control channel cross-link interference according to any one of claims 1-7.