CN113438676B

CN113438676B - Method and device for reducing voice service channel cross link interference

Info

Publication number: CN113438676B
Application number: CN202110706006.0A
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: 2022-09-27
Anticipated expiration: 2041-06-24
Also published as: CN113438676A

Abstract

The embodiment of the application provides a method and a device for reducing voice service channel cross link interference, relates to the technical field of communication, and solves the technical problem that no method for reasonably and effectively reducing the voice service channel cross link interference exists at present. The method for reducing the cross link interference of the voice traffic channel comprises the following steps: acquiring the interference level of a time slot interfered by a cross link; determining target data according to the interference level under the condition that the interference level meets a preset condition; the target data includes: at least one of a target offset power of a received power spectrum of the voice traffic channel, an offset value of a modulation coding level of the voice traffic channel, or an adjustment amount of a transmission power of the voice traffic channel; and adjusting the equipment parameters corresponding to the target data according to the target data.

Description

Method and device for reducing voice service 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 voice traffic channel.

Background

In a Time Division Duplex (TDD) system, a diversified network application scenario exists. 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 voice service channel cross link interference, which solve the technical problem that no method for reasonably and effectively reducing the voice service 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 cross-link interference of a voice traffic channel is provided, including: acquiring the interference level of a time slot interfered by a cross link; determining target data according to the interference level under the condition that the interference level meets a preset condition; the target data includes: at least one of a target bias power of a received power spectrum of the voice traffic channel, a bias value of a modulation coding level of the voice traffic channel, or an adjustment amount of a transmission power of the voice traffic channel; and adjusting the equipment parameters corresponding to the target data according to the target data.

As can be seen from the above, when reducing the cross-link interference of the voice traffic channel, the interference level of the timeslot interfered by the cross-link may be obtained first. Subsequently, different target data can be determined according to the interference level when the interference level meets different conditions, and the device parameters corresponding to the target data can be adjusted according to the target data. Therefore, different equipment parameters can be adjusted according to the interference level, and the cross link interference of the voice service channel can be reasonably and effectively reduced. In the process of reducing the cross link interference of the voice service channel, the limitation of a site is not needed, and the resource utilization rate is improved.

In a second aspect, an apparatus for reducing cross-link interference of a voice traffic channel is provided, including: an acquisition unit and a processing unit; an obtaining unit, configured to obtain an interference level of a time slot interfered by a cross link; the processing unit is used for determining target data according to the interference level under the condition that the interference level meets a preset condition; the target data includes: at least one of a target offset power of a received power spectrum of the voice traffic channel, an offset value of a modulation coding level of the voice traffic channel, or an adjustment amount of a transmission power of the voice traffic channel; and the processing unit is also used for adjusting the equipment parameters corresponding to the target data according to the target data.

In a third aspect, an apparatus for reducing voice traffic 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 voice traffic channel cross-link interference is in operation, the processor executes computer-executable instructions stored in the memory to cause the apparatus for reducing voice traffic channel cross-link interference to perform the method for reducing voice traffic channel cross-link interference according to the first aspect.

The device for reducing the cross-link interference of the voice traffic channel may be a network device, or may be a part of a device in the network device, such as a system on chip in the 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 cross-link interference of a voice traffic channel. 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 voice traffic 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 voice traffic 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 the processor of the apparatus for reducing voice traffic channel cross-link interference, or may be packaged separately from the processor of the apparatus for reducing voice traffic 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 devices for reducing voice traffic 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 cross-link interference of a voice traffic channel according to an embodiment of the present disclosure;

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

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

fig. 4b is a schematic flowchart of a method for reducing cross-link interference of a voice traffic channel according to an embodiment of the present application;

fig. 4c is a flowchart illustrating a method for reducing cross-link interference of a voice traffic channel according to an embodiment of the present application;

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

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 "e.g.," 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", "second", and the like 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", "second", and the like do not 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 view of the above problems, embodiments of the present application provide a method for reducing interference of a voice traffic channel cross link, where when reducing interference of a voice traffic channel cross link, an interference level of a time slot interfered by the cross link may be obtained first. Subsequently, different target data can be determined according to the interference level when the interference level meets different conditions, and the device parameters corresponding to the target data can be adjusted according to the target data. Therefore, different equipment parameters can be adjusted according to the interference level, and the cross link interference of the voice service channel can be reasonably and effectively reduced. In the process of reducing the cross link interference of the voice service channel, 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 voice traffic 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 providing voice and/or data connectivity to a user, a handheld device having wireless connectivity capabilities, 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 voice traffic 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 by taking the apparatus for reducing voice traffic 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 cross-link interference of a voice traffic channel according to an embodiment of the present application. As shown in fig. 2, the apparatus for reducing cross-link interference of voice traffic channels 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 a device for reducing cross-link interference of voice traffic channels, 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 code. The processor 21, when invoking and executing instructions or program code stored in the memory 22, is capable of implementing the method for reducing voice traffic 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 should be noted that the structure shown in fig. 2 does not constitute a limitation of the apparatus for reducing cross-link interference of voice traffic channels. The means for reducing voice traffic 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 fig. 2.

Fig. 3 shows another hardware structure of the apparatus for reducing cross-link interference of voice traffic channels in the embodiment of the present application. As shown in fig. 3, the apparatus for reducing voice traffic 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 can 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 voice traffic channel cross-link interference, or may be an external interface (corresponding to the communication interface 23) of a device that reduces voice traffic channel cross-link interference.

It is noted that the structure shown in fig. 2 (or fig. 3) does not constitute a limitation on the means for reducing voice traffic channel cross-link interference, which may include more or less components than those shown in fig. 2 (or fig. 3), or a combination of certain components, or a different arrangement of components, in addition to those shown in fig. 2 (or fig. 3).

The method for reducing cross-link interference of voice traffic channels according to 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 cross-link interference of voice traffic channels shown in fig. 2 (or fig. 3).

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

S401, the access network equipment acquires the interference level of the time slot interfered by the 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 time 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 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 acquires the interference level of the time slot that is interfered by the cross link.

When obtaining the interference level of the time slot interfered by the cross link, firstly, a plurality of uplink time slots in a frame of the 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 M frames in a preset time period, each frame of the M frames comprises N uplink time slots, and the positions of the uplink time slots in each frame are the same.

After determining the received noise power of each uplink time slot in the multiple uplink time slots, the access network device may obtain the interference level of the time slot interfered by the cross link according to the received noise power of any two time slots in the multiple uplink time slots; the interference level of the time slot interfered by the cross link can be obtained according to the average value of the received noise power of any two time slots in the plurality of time slots; the interference level of the time slot interfered by the cross link may also be obtained through other algorithms or parameters, which is not limited in this disclosure.

Optionally, 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.

Illustratively, any two time slots are preset as a first time slot and a second time slot.

When obtaining the interference level of the time slot interfered by the cross link, the received noise power corresponding to the first time slot and the received noise power corresponding to the second time slot in the plurality of time slots may be determined.

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 between the received noise power of the first time slot and the received noise power of the second time slot meets a preset difference, and the received noise power corresponding to the first time slot is greater than a first threshold, determining the received noise power corresponding to the first time slot as the interference level of the time slot interfered by the cross link.

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 the ith uplink time slot of the N uplink time slots, and the second time slot is the 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 For the jth frame of each of M frames in a preset time periodThe average of the received noise power of the row slots.

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

TABLE 1

Index name	Acquisition time stamp	s frame uplink ith time slot	J time slot of s frame uplink
				Uplink received noise power (dBm)	YY,MM,DD,HH,SS	p _si	p _sj

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 average value of the received noise power of the ith uplink time slot as the interference level of the time slot interfered by the cross link.

S402, the access network equipment determines target data according to the interference level under the condition that the interference level meets a preset condition.

Wherein the target data includes: at least one of a target offset power of the voice traffic channel received power spectrum, an offset value of the voice traffic channel modulation coding level, or an adjustment amount of the transmit power of the voice traffic channel.

Specifically, the access network device may determine the target data according to the interference level when the interference level meets the preset condition, and the target data is divided into the following 4 cases:

case a:

when the preset conditions are as follows: the interference level is greater than a first threshold value and less than or equal to a second threshold value, and the target data is the target bias power of the voice service channel receiving power spectrum;

determining target data from the interference level, comprising:

the interference level and the target bias power satisfy a first formula; the first formula is:

P _c is a target bias power; p _cl At 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; p _i And the received noise power corresponding to the ith time slot in the plurality of time slots.

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 _ch May be 10 dB; p _SH May be-95 dBm.

As can be seen from the above, when the uplink timeslot of the access network device receives relatively strong interference (that is, the interference level 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 access network device, but the target power of the access network device cannot be increased without limitation, and if the target power is increased continuously, other indicators (for example, the network speed) may be affected. Therefore, the target power of the access network device needs to be adjusted within a certain range, and the adjusted target power of the access network device cannot exceed the maximum target power of the access network device.

Case b:

when the preset conditions are as follows: the interference level is greater than a second threshold, the target data is a target bias power of the voice traffic channel received power spectrum, and the target bias power is a highest target bias power value.

Therefore, when the received noise power of the target uplink timeslot is greater than the second threshold, the access network device can directly set the highest target offset power value of the access network device as the target offset power of the access network device, and continuously increase the target offset power of the access network device according to the second formula, so that the operation of increasing the target offset 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.

Case c:

when the preset conditions are as follows: the channel corresponding to the voice service channel also carries data service, the interference level is greater than a third threshold value and less than or equal to a fourth threshold value, and the target data is the offset value of the modulation coding level of the voice service channel;

determining target data from the interference level, comprising:

the interference level and the offset value satisfy a second formula; the second formula is:

Offset _MCS is a bias value; m _l Is the lowest bias value for down regulation; m _h The highest bias value for down regulation; p _SM Is a third threshold; p _SN Is a fourth threshold; []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.

As can be seen from the above, when the channel corresponding to the voice service channel of the access network device also carries data service and the uplink timeslot receives relatively strong interference (the interference level is greater than the third threshold and less than or equal to the fourth threshold), the level of the modulation and coding scheme of the access network device may be reduced to reduce the interference and improve the reliability of the access network device. However, the modulation and coding level of the access network device cannot be greatly reduced, for example, if the modulation and coding level of the access network device is greatly reduced, other indexes (for example, the network speed) are affected. Therefore, adjustment of the offset value of the access network device needs to be adjusted conservatively, and the modulation and coding level of the adjusted access network device is 0 at the lowest.

Case d:

when the preset conditions are as follows: and the channel corresponding to the voice service channel also carries data service, the interference level is greater than a fourth threshold value, the target data is an offset value of the modulation coding level of the voice service channel, and the offset value is a highest offset value which is adjusted downwards.

It can be known from the above that the modulation and coding level of the access network device cannot be adjusted down without limit, and further it can be known that the offset value of the access network device cannot be adjusted down without limit, therefore, when a channel corresponding to a voice service channel still carries a data service, and the received noise power of a target uplink timeslot is greater than a fourth threshold, the access network device can directly set the highest offset value of the access network device that is adjusted down as the offset value of the access network device, and continuously adjust the offset value of the access network device according to the third formula, so that the operation of adjusting the offset value of the access network device up 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 addition, when the interference level meets the preset condition, the access network device may also determine the target data according to the demodulated block error rate of the voice service, which is divided into the following 2 cases:

case e:

when the preset conditions are as follows: only voice service is carried on a channel corresponding to the voice service channel, the interference level is greater than a third threshold value and less than or equal to a fourth threshold value, and the target data is the adjustment quantity of the transmitting power of the voice service channel;

the adjustment quantity of the transmitting power of the voice service channel meets a third formula; the third formula is:

a is described ₀ Is the adjustment amount; a is described _l The highest bias power for up-regulation; b is ₁ A value of an initial block error rate for demodulation of the voice service; b is described ₂ Is a value of a target block error rate for demodulation of the voice traffic.

As can be seen from the above, when only the voice service is carried on the channel corresponding to the voice service channel of the access network device and the uplink timeslot receives strong interference (the interference level is greater than the third threshold and less than or equal to the fourth threshold), the transmit power of the voice service channel may be adjusted according to the characteristics of the voice service (continuous packet traffic). In order to reduce the overhead of control channels and the like, the transmission power of voice traffic channels is generally adopted in a semi-persistent scheduling manner to reduce interference and improve the reliability of access network equipment. However, the transmission power of the access network device cannot be adjusted greatly, for example, if the transmission power of the access network device is adjusted greatly, other indexes (for example, the network speed) are affected. Therefore, adjustment of the transmission power of the access network device needs conservative adjustment, and the adjusted transmission power of the access network device does not exceed the maximum target power which can be set by a system traffic channel.

Case f:

when the preset conditions are as follows: and the channel corresponding to the voice service channel also carries data service, the interference level is greater than a fourth threshold, the target data is the adjustment quantity of the transmitting power of the voice service channel, and the adjustment quantity is the highest up-regulated offset power.

Therefore, when the received noise power of the target uplink timeslot is greater than the fourth threshold, the access network device can directly set the adjustment quantity of the transmission power of the voice service channel with the highest offset power, which is adjusted up by the access network device, as the adjustment quantity of the transmission power of the voice service channel of the access network device, and continuously increase the transmission power of the voice service channel of the access network device according to the third formula, so that the operation of increasing the transmission power of the voice service channel of the access network device does not have too great influence on other indexes of the access network device, and further, the stability of the network is ensured to a certain extent.

And S403, the access network equipment adjusts the equipment parameters corresponding to the target data according to the target data.

As can be seen from the foregoing S402, in different cases, the access network device may adjust the device parameter corresponding to the target data according to the target data.

Specifically, in case a (i.e., the interference level is greater than the first threshold and less than or equal to the second threshold), the access network device may adjust the target power of the voice traffic channel of the access network device according to the target bias power. The adjusted target power is the sum of the initially detected target power and the target bias power set by the access network equipment. Therefore, the access network equipment can effectively reduce the interference on the uplink time slot by adjusting the target power of the voice service channel of the access network equipment.

In case b (i.e., the interference level is greater than the second threshold), the access network device may adjust the target power of the voice traffic channel of the access network device according to the target bias power. The adjusted target power is the sum of the initially detected target power and the target bias power set by the access network equipment. Therefore, the target bias power is the highest target bias power value, 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.

In case c (that is, the channel corresponding to the voice traffic channel also carries data traffic, and the interference level is greater than the third threshold and less than or equal to the fourth threshold), the access network device may adjust the initial modulation and coding scheme of the voice traffic channel according to the offset value. The adjusted initial modulation coding mode of the voice service channel is the difference value between the initial modulation coding mode of the voice service channel selected by the system and the offset value. Therefore, the access network equipment can effectively reduce the interference on the uplink time slot of the access network equipment by adjusting the initial modulation and coding mode of the voice service channel.

In case d (that is, the channel corresponding to the voice traffic channel also carries data traffic, and the interference level is greater than the fourth threshold), the access network device may adjust the initial modulation and coding scheme of the voice traffic channel according to the offset value. The adjusted initial modulation coding mode of the voice service channel is the difference value between the initial modulation coding mode of the voice service channel selected by the system and the offset value. Therefore, the offset value is the highest offset value which is adjusted downwards, so that the operation of increasing the target offset 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.

Under the condition e (that is, the channel corresponding to the voice service channel only carries the voice service, and the interference level is greater than the third threshold and less than or equal to the fourth threshold), the access network device may adjust the transmit power of the voice service channel according to the value of the demodulated block error rate of the voice service. The adjusted transmission power of the voice service channel is the sum of the adjustment amount and the initial transmission power of the voice service channel. Therefore, the access network equipment can effectively reduce the interference on the uplink time slot of the access network equipment by adjusting the transmitting power of the voice service channel.

In case d (that is, the channel corresponding to the voice service channel only carries the voice service, and the interference level is greater than the fourth threshold), the access network device may adjust the transmit power of the voice service channel according to the demodulated block error rate of the voice service. The adjusted transmission power of the voice traffic channel is the sum of the up-regulated highest bias power and the initial transmission power of the voice traffic channel. Therefore, the adjustment amount is the highest up-regulated bias power, so that the operation of increasing the transmitting power of the voice service channel of the access network equipment does not cause too great influence on other indexes of the access network equipment, and the stability of the network is further ensured to a certain extent.

The application provides a method for reducing cross link interference of a voice service channel, which comprises the following steps:

acquiring the interference level of a time slot interfered by a cross link; determining target data according to the interference level under the condition that the interference level meets a preset condition; the target data includes: at least one of a target bias power of a received power spectrum of the voice traffic channel, a bias value of a modulation coding level of the voice traffic channel, or an adjustment amount of a transmission power of the voice traffic channel; and adjusting the equipment parameters corresponding to the target data according to the target data.

As can be seen from the above, when reducing the cross-link interference of the voice traffic channel, the interference level of the timeslot interfered by the cross-link may be obtained first. Subsequently, different target data can be determined according to the interference level when the interference level meets different conditions, and the device parameters corresponding to the target data can be adjusted according to the target data. Therefore, different equipment parameters can be adjusted according to the interference level, and the cross link interference of the voice service channel can be reasonably and effectively reduced. In the process of reducing the cross link interference of the voice service channel, the limitation of a place is not needed, and the resource utilization rate is improved

Optionally, with reference to fig. 4a, as shown in fig. 4b, after S401, if the preset condition is that the interference level is greater than the first threshold and less than or equal to the second threshold, the method includes: S501-S502.

S501, the access network equipment determines the target bias power of the voice service channel receiving power spectrum according to the interference level.

S502, the access network equipment adjusts the target power of the voice service channel of the access network equipment according to the target bias power.

Optionally, with reference to fig. 4a, as shown in fig. 4b, after S401, if the preset condition is that the interference level is greater than the second threshold, the method includes: S503-S504.

S503, the access network equipment determines the target bias power of the voice service channel receiving power spectrum according to the interference level.

S504, the access network equipment adjusts the target power of the voice service channel of the access network equipment according to the target bias power.

Optionally, with reference to fig. 4a, as shown in fig. 4c, after S401, it is further required to determine that only the voice service is carried on the channel corresponding to the voice service channel.

If the channel corresponding to the voice service channel not only carries the voice service but also carries the data service, and the preset condition is that the interference level is greater than a third threshold value and less than or equal to a fourth threshold value, the method comprises the following steps: S505-S506.

And S505, the access network equipment determines the offset value of the modulation coding level of the voice service channel according to the interference level.

S506, the access network equipment adjusts the initial modulation coding mode of the voice service channel according to the offset value.

If the channel corresponding to the voice service channel not only carries the voice service but also carries the data service, and the preset condition is that the interference level is greater than the fourth threshold, the method comprises the following steps: S507-S508.

S507, the access network equipment determines the offset value of the voice service channel modulation coding level according to the interference level.

And S508, the access network equipment adjusts the initial modulation coding mode of the voice service channel according to the offset value.

If the channel corresponding to the voice service channel only carries the voice service and the preset condition is that the interference level is greater than a third threshold and less than or equal to a fourth threshold, the method comprises the following steps: S509-S510.

S509, the access network device determines the adjustment amount of the transmitting power of the voice service channel according to the interference level.

S510, the access network equipment adjusts the transmitting power of the voice service channel according to the demodulated block error rate value of the voice service.

If the channel corresponding to the voice service channel only carries the voice service and the preset condition is that the interference level is greater than the fourth threshold, the method comprises the following steps: S511-S512.

S511, the access network equipment determines the adjustment quantity of the transmitting power of the voice service channel according to the interference level.

S512, the value of the demodulated block error rate of the voice service of the access network equipment and the transmitting power of the voice service channel are adjusted.

The scheme provided by the embodiment of the application is mainly introduced from the perspective of a method. To implement the above functions, it includes hardware structures and/or software modules for performing the respective functions. 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 in 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, according to the method example, the functional modules of the apparatus for reducing the cross-link interference of the voice traffic channel may be divided, 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, in the embodiment of the present application, the division of the module is schematic, and is only one logic function division, and another division manner may be provided in actual implementation.

Fig. 5 is a schematic structural diagram of an apparatus 50 for reducing cross-link interference of a voice traffic channel according to an embodiment of the present application. The apparatus 50 for reducing voice traffic channel cross-link interference is used to solve the technical problem that there is no reasonable and effective method for reducing voice traffic channel cross-link interference currently, for example, the method for reducing voice traffic channel cross-link interference shown in fig. 4a is implemented. The apparatus 50 for reducing cross-link interference of voice traffic channel comprises: an acquisition unit 501 and a processing unit 502;

an obtaining unit 501 is configured to obtain an interference level of a timeslot interfered by a cross link. For example, in conjunction with fig. 4a, the obtaining unit 501 is configured to perform S401.

A processing unit 502, configured to determine target data according to the interference level when the interference level meets a preset condition; the target data includes: at least one of a target offset power of a received power spectrum of the voice traffic channel, an offset value of a modulation coding level of the voice traffic channel, or an adjustment amount of a transmission power of the voice traffic channel. For example, in connection with fig. 4a, the processing unit 502 is configured to execute S402.

The processing unit 502 is further configured to adjust a device parameter corresponding to the target data according to the target data. For example, in connection with fig. 4a, the processing unit 502 is configured to execute S403.

Optionally, the obtaining 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 a first threshold, determining the received noise power corresponding to the first time slot as the interference level of the time slot interfered by the cross link.

Optionally, when the preset condition is: the interference level is greater than a first threshold value and less than or equal to a second threshold value, and the target data is the target bias power of the voice service channel receiving power spectrum;

the processing unit 502 is specifically configured to:

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; p is _i The received noise power corresponding to the ith time slot in a plurality of time slots.

Optionally, when the preset condition is: the interference level is greater than a second threshold, the target data is a target bias power of the voice traffic channel received power spectrum, and the target bias power is a highest target bias power value.

Optionally, when the preset condition is: a channel corresponding to the voice service channel is also loaded with data service, the interference level is greater than a third threshold value and less than or equal to a fourth threshold value, and the target data is an offset value of the modulation coding level of the voice service channel;

the processing unit 502 is specifically configured to:

Offset _MCS is a bias value; m is a group of _l Is the lowest offset value of down regulation; m is a group of _h The highest bias value for down regulation; p is _SM Is a third threshold; p _SN Is a fourth threshold; []To round-down operations.

Optionally, when the preset condition is: and the channel corresponding to the voice service channel also carries data service, the interference level is greater than a fourth threshold value, the target data is an offset value of the modulation coding level of the voice service channel, and the offset value is a down-regulated highest offset value.

Optionally, the method further includes:

when the preset conditions are as follows: the channel corresponding to the voice service channel only bears voice service, the interference level is greater than a third threshold value and less than or equal to a fourth threshold value, and the target data is the adjustment quantity of the transmitting power of the voice service channel;

the adjustment quantity meets a third formula; the third formula is:

A ₀ to adjust the amount; a. the _l The highest bias power for up-regulation; b is ₁ A value of an initial block error rate for demodulation of voice traffic; b is ₂ A value of a target block error rate for demodulation of voice traffic.

Optionally, when the preset condition is: the channel corresponding to the voice service channel only carries voice service, the interference level is greater than the fourth threshold, the target data is the adjustment quantity of the transmitting power of the voice service channel, and the adjustment quantity is the highest up-regulated offset power.

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 voice traffic channel cross link interference in the method for reducing the voice traffic 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 can be directly loaded into a memory and contains software codes, and after the computer program product is loaded and executed by a computer, the computer program product can implement each step executed by the apparatus for reducing voice traffic channel cross link interference in the method for reducing voice traffic 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, it 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 data storage device including one or more available media integrated servers, data centers, and the like. 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 above description of the embodiments, it is clear to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely used as an example, and in practical applications, the above function distribution may be completed by different functional modules according to needs, that is, the internal structure of the device 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 as a software functional unit and sold or used as a separate 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 voice traffic channel, comprising:

acquiring the interference level of a time slot interfered by a cross link;

determining target data according to the interference level under the condition that the interference level meets a preset condition; the target data includes: at least one of a target offset power of a received power spectrum of the voice traffic channel, an offset value of a modulation coding level of the voice traffic channel, or an adjustment amount of a transmission power of the voice traffic channel; when the preset conditions are as follows: the interference level is greater than a first threshold and less than or equal to a second threshold, and the target data is a target bias power of the voice traffic channel received power spectrum;

the determining target data according to the interference level includes:

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; the P is _i Receiving noise power corresponding to the ith time slot in a plurality of time slots;

and adjusting the equipment parameters corresponding to the target data according to the target data.

2. The method of claim 1, wherein obtaining the interference level of the 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 a first threshold, determining the received noise power corresponding to the first time slot as the interference level of the time slot interfered by the cross link.

3. The method according to claim 1, wherein when the preset condition is: the interference level is greater than the second threshold, the target data is a target bias power of the voice traffic channel received power spectrum, and the target bias power is the highest target bias power value.

4. The method according to claim 1, wherein when the preset condition is: a channel corresponding to the voice service channel is also loaded with data service, the interference level is greater than a third threshold and less than or equal to a fourth threshold, and the target data is an offset value of the modulation coding level of the voice service channel;

the determining target data according to the interference level comprises:

the Offset _MCS Is the bias value; said M _l Is the lowest bias value for down regulation; the M is _h Is the highest bias value for down regulation; the P is _SM Is the third threshold; p _SN Is the fourth threshold; floor is a round-down operation.

5. The method according to claim 4, wherein when the preset condition is: the channel corresponding to the voice service channel is also loaded with the data service, the interference level is greater than the fourth threshold, the target data is an offset value of the modulation coding level of the voice service channel, and the offset value is the adjusted highest offset value.

6. The method of claim 4 or 5, further comprising:

when the preset conditions are as follows: the channel corresponding to the voice service channel only carries voice service, the interference level is greater than the third threshold and less than or equal to the fourth threshold, and the target data is the adjustment quantity of the transmission power of the voice service channel;

the adjustment amount satisfies a third formula; the third formula is:

a is described ₀ Is the adjustment amount; a is described _l The highest bias power for up-regulation; b is ₁ A value of an initial block error rate for demodulation of the voice service; b is ₂ Is a value of a target block error rate for demodulation of the voice traffic.

7. The method according to claim 6, wherein when the preset condition is: the channel corresponding to the voice service channel only carries the voice service, the interference level is greater than the fourth threshold, the target data is the adjustment amount of the transmitting power of the voice service channel, and the adjustment amount is the adjusted highest bias power.

8. An apparatus for reducing cross-link interference of a voice traffic channel, comprising: an acquisition unit and a processing unit;

the acquiring unit is used for acquiring the interference level of the time slot interfered by the cross link;

the processing unit is used for determining target data according to the interference level under the condition that the interference level meets a preset condition; the target data includes: at least one of a target offset power of a received power spectrum of the voice traffic channel, an offset value of a modulation coding level of the voice traffic channel, or an adjustment amount of a transmission power of the voice traffic channel; when the preset condition is as follows: the interference level is greater than a first threshold and less than or equal to a second threshold, and the target data is a target bias power of the voice traffic channel received power spectrum;

the processing unit is specifically configured to:

said 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; the P is _i The received noise power corresponding to the ith time slot in a plurality of time slots;

the processing unit is further configured to adjust a device parameter corresponding to the target data according to the target data.

9. The apparatus according to claim 8, wherein the obtaining unit is specifically configured to:

10. The apparatus according to claim 8, wherein when the preset condition is: the interference level is greater than the second threshold, the target data is a target bias power of the voice traffic channel received power spectrum, and the target bias power is the highest target bias power value.

11. The apparatus according to claim 8, wherein when the preset condition is: a channel corresponding to the voice service channel is also loaded with data service, the interference level is greater than a third threshold and less than or equal to a fourth threshold, and the target data is an offset value of the modulation coding level of the voice service channel;

the processing unit is specifically configured to:

the Offset _MCS Is the bias value; said M _l Is the lowest bias value for down regulation; the M is _h The highest bias value for down regulation; the P is _SM Is the third threshold; p _SN Is the fourth threshold; floor is a round-down operation.

12. The apparatus according to claim 11, wherein when the preset condition is: the channel corresponding to the voice service channel is also loaded with the data service, the interference level is greater than the fourth threshold, the target data is an offset value of the modulation coding level of the voice service channel, and the offset value is the adjusted highest offset value.

13. The apparatus of claim 11 or 12, further comprising:

when the preset condition is as follows: the channel corresponding to the voice service channel only carries voice service, the interference level is greater than the third threshold and less than or equal to the fourth threshold, and the target data is the adjustment quantity of the transmission power of the voice service channel;

the adjustment amount satisfies a third formula; the third formula is:

14. The apparatus according to claim 13, wherein when the preset condition is: the channel corresponding to the voice service channel only carries the voice service, the interference level is greater than the fourth threshold, the target data is the adjustment amount of the transmitting power of the voice service channel, and the adjustment amount is the adjusted highest bias power.

15. An apparatus for reducing cross-link interference of a voice traffic channel, 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 voice traffic channel cross-link interference is operating cause the apparatus for reducing voice traffic channel cross-link interference to perform the method for reducing voice traffic channel cross-link interference according to any one of claims 1 to 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 voice traffic channel cross-link interference as recited in any one of claims 1-7.