CN113543296B

CN113543296B - Interference suppression method and device

Info

Publication number: CN113543296B
Application number: CN202010289926.2A
Authority: CN
Inventors: 汤茂海; 陈敏敏; 王晓乐; 蒋鑫鑫; 管鲍
Original assignee: Hytera Communications Corp Ltd
Current assignee: Hytera Communications Corp Ltd
Priority date: 2020-04-14
Filing date: 2020-04-14
Publication date: 2023-07-18
Anticipated expiration: 2040-04-14
Also published as: CN113543296A

Abstract

The application provides an interference suppression method and device, wherein the method can be applied to a user terminal and comprises the following steps: when a preset information reporting condition is met, generating overlapped MacCE information; the overlapped MacCE information comprises a difference value between the signal quality of the strongest cell and the signal quality of the strongest adjacent cell with the same frequency and a path loss level; the overlapped MacCE information is sent to a base station, so that the base station determines uplink power adjustment parameters according to the overlapped MacCE information; receiving the uplink power adjustment parameter sent by the base station; and adjusting the power of the uplink transmitted signal according to the uplink power adjustment parameter. The technical scheme can realize the real-time inhibition of the base station to the uplink signal power of the user terminal in the overlapped coverage area, thereby ensuring the network performance of the overlapped coverage area.

Description

Interference suppression method and device

Technical Field

The present disclosure relates to the field of mobile communications technologies, and in particular, to a method and an apparatus for interference suppression.

Background

In wireless co-channel networking, overlapping coverage areas are not avoided. In the case of low carrier frequencies, antenna performance tends to be limited, making control of the overlap area in network planning more difficult. However, if the uplink transmission power of the ue in the overlapping coverage area cannot be effectively suppressed, co-channel interference to the neighboring cell will be dramatically increased, and uplink performance of the entire network is seriously affected.

Therefore, how to suppress the uplink transmission power of the ue in the overlapping coverage area of the lower carrier frequency is a key difficulty faced in ensuring the network performance of the overlapping coverage area of the lower carrier frequency.

Disclosure of Invention

Based on the above requirements, the application provides an interference suppression method and device, which can suppress uplink transmission power of a user terminal in an overlapping coverage area in real time, so as to ensure network performance of the overlapping coverage area with lower carrier frequency.

In order to achieve the above purpose, the present application proposes the following technical solutions:

an interference suppression method applied to a user terminal, the method comprising:

when a preset information reporting condition is met, generating overlapped MacCE information; the overlapped MacCE information comprises a difference value between the signal quality of the strongest cell and the signal quality of the strongest adjacent cell with the same frequency and a path loss level;

the overlapped MacCE information is sent to a base station, so that the base station determines uplink power adjustment parameters according to the overlapped MacCE information;

receiving the uplink power adjustment parameter sent by the base station;

and adjusting the power of the uplink transmitted signal according to the uplink power adjustment parameter.

Optionally, the meeting the preset information reporting condition includes:

the user terminal is positioned in the overlapping coverage area of the same-frequency cell and initiates random access of non-switching reasons to the base station;

or the water-soluble polymer can be used for the water-soluble polymer,

the user terminal is positioned in the overlapping coverage area of the same-frequency cells and reaches a preset information reporting period, or the measured reference signal meets the preset reference signal change requirement.

Optionally, the measured reference signal meets a preset reference signal change requirement, including:

the absolute value of the difference value between the currently measured first signal value and the previously reported first signal value is larger than a preset threshold value;

wherein the first signal value includes a difference between the reference signal received powers of the serving cell and the strongest neighbor cell.

Optionally, the generating overlapping MacCE information includes:

calculating to obtain the difference value between the signal quality of the strongest cell and the signal quality of the strongest adjacent cell with the same frequency, and determining the path loss level by measuring the path loss; wherein the strongest cell includes a current serving cell;

and combining according to the difference value and the path loss level to obtain overlapped MacCE information.

Optionally, the first 3 bits of the overlapping MacCE information carry the path loss level information, and the last 5 bits of the overlapping MacCE information carry the signal quality difference information.

Optionally, the method further comprises:

receiving a transmitting power control command sent by the base station, and adjusting the power of an uplink signal by utilizing the received transmitting power control command; and the generated power control command carries an uplink power adjustment parameter determined based on the target convergence SINR.

An interference suppression method applied to a base station, the method comprising:

receiving overlapped MacCE information sent by a user terminal;

according to the overlapped MacCE information, calculating to obtain uplink power adjustment parameters;

and sending the uplink power adjustment parameter to the user terminal so that the user terminal adjusts the power of the uplink sent signal according to the uplink power adjustment parameter.

Optionally, the calculating, according to the overlapping MacCE information, an uplink power adjustment parameter includes:

judging whether the user terminal is positioned in the overlapping coverage area of the same-frequency cell and is positioned at a non-extremely distant point according to the received overlapping MacCE information;

if the user terminal is positioned in the overlapping coverage area of the same-frequency cell and is positioned at a non-extremely far point, calculating to obtain a PUSCH power adjustment parameter according to the overlapping MacCE information and the definition type of the cell-level physical uplink shared channel open loop transmitting power;

wherein, the PUSCH power adjustment parameter is an uplink power adjustment parameter.

Optionally, the sending the uplink power adjustment parameter to the ue includes:

if the user terminal is the user terminal of the initial access base station, the uplink power adjustment parameter is issued to the user terminal along with an RRC connection establishment or reestablishment message;

and if the user terminal is a user terminal in a connection state, transmitting the uplink power adjustment parameter to the user terminal along with a reconfiguration message.

Optionally, the method further comprises:

and adjusting a closed loop power control target convergence SINR of the user terminal according to the latest reported overlapped MacCE information, and indicating the user terminal to adjust uplink signal power according to the target convergence SINR so as to reduce interference of the transmitting power of the user terminal to a neighboring cell.

An interference suppression device applied to a user terminal, the device comprising:

a first memory and a first processor;

wherein the first memory is used for storing a program;

the first processor is configured to implement the above-mentioned interference suppression method applied to the user terminal by running the program in the first memory.

An interference suppression device for use in a base station, the device comprising:

a second memory and a second processor;

wherein the second memory is used for storing a program;

the second processor is configured to implement the above-mentioned interference suppression method applied to the base station by running the program in the second memory.

By adopting the interference suppression method, the user terminal in the overlapping coverage area of the same-frequency cell sends the overlapping MacCE information to the base station in real time, so that the base station calculates uplink power adjustment parameters according to the overlapping MacCE information reported by the user terminal and sends the uplink power adjustment parameters to the user terminal, and the user terminal adjusts the uplink signal power of the user terminal according to the uplink power adjustment parameters sent by the base station, thereby avoiding the interference to the adjacent cell caused by overlarge uplink signal power of the user terminal in the overlapping coverage area. The technical scheme can realize the real-time inhibition of the base station to the uplink signal power of the user terminal in the overlapped coverage area, thereby ensuring the network performance of the overlapped coverage area.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present application, and that other drawings may be obtained according to the provided drawings without inventive effort to a person skilled in the art.

Fig. 1 is a timing diagram of an interference suppression method according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a data format of overlapping MacCE information provided by an embodiment of the present application;

fig. 3 is a flowchart of an interference suppression method applied to a ue according to an embodiment of the present application;

fig. 4 is a flowchart of an interference suppression method applied to a base station according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of an interference suppression device applied to a user terminal according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of an interference suppression device applied to a base station according to an embodiment of the present application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

The embodiment of the application provides an interference suppression method which can be applied to a wireless communication scene before a user terminal and a base station, in particular to a wireless communication scene between the user terminal and the base station in a co-frequency overlapping coverage area with lower carrier frequency. Specifically, by executing the interference suppression method provided by the embodiment of the application by the user terminal and the base station, the co-channel interference of the uplink transmission of the user terminal in the overlapping coverage area of the lower carrier frequency to the adjacent cell can be suppressed. The user terminal may be any type of user terminal that participates in wireless communication with a base station, such as a mobile phone, a tablet computer, an intercom, and the like.

Referring to fig. 1, the interference suppression method provided in the embodiment of the present application specifically includes:

s101, a user terminal judges whether a preset information reporting condition is met;

specifically, the embodiment of the application sets that when the user terminal is in the overlapping coverage area and when a preset information reporting condition is met, an information reporting program is triggered, and overlapping MacCE (Media access control Control Element, medium access control unit) information is reported to the base station.

Exemplary, the above meeting the preset information reporting condition includes:

the user terminal is in the overlapping coverage area of the same-frequency cell and is initially accessed to the base station; or the user terminal is positioned in the overlapping coverage area of the same-frequency cell and reaches a preset information reporting period, or the measured reference signal meets the preset reference signal change requirement.

In other embodiments, the meeting the preset information reporting condition further includes:

the ue is in the overlapping coverage area of the same-frequency cell, and initiates random access for non-handover reasons, for example, initial access of the ue in rrc_idle state, procedure of RRC connection reestablishment, downlink data in rrc_connected state and uplink out-of-step, uplink data in rrc_connected state and uplink out-of-step, etc.

The embodiment of the application sets that the principle that the user terminal reports the overlapped MacCE information to the base station is to ensure that the initial access can report (msg 3), thereby ensuring effective control of the initial uplink service of the overlapped user; and ensuring good balance of timeliness and overhead of overlapping reporting of the connected user terminals (UE).

For example, when a user terminal in an overlapping coverage area of a same-frequency cell initially accesses a base station, the embodiment of the application sets that overlapping MacCE information is reported to the base station, and a process of reporting the overlapping MacCE information may be referred to as overlapping reporting.

Meanwhile, in the embodiment of the application, an overlapping reporting period is set for the user terminal, and when the period arrives, the user terminal in the overlapping coverage area of the same-frequency cell should report overlapping MacCE information to the base station. It should be noted that, when the period arrives, the user terminal does not immediately report the overlapping MacCE information, but starts the packet upload after the uplink new transmission resource exists when the period arrives.

In addition, the embodiment of the present application further provides that, when the ue is in the overlapping coverage area of the co-frequency cells, even if the reporting period does not come, if the measured reference signal meets the preset reference signal change requirement, the ue needs to report the MacCE information.

The measured reference signal meets a preset reference signal change requirement, specifically, the absolute value of the difference deltaRsrp between the current measured receiving power (Reference signal receiving power, rsrp) of the reference signal of the serving cell and the strongest neighbor cell and the difference deltaRsrp between the last reported receiving power of the reference signal of the serving cell and the strongest neighbor cell is greater than a preset threshold value-deltarsrpChange value.

Based on the setting of the preset signal reporting condition, triggering and reporting of the overlay of the user terminal side can be performed according to the following conditions:

triggering an overlapReport report if any of the following occurs:

(1) the period of the periodic time is not reached, but the deltaRsrp changes over deltaRsrpChange from the last report of the overlap report;

(2) triggering reporting of the overlap report when the periodoverlap-Timer expires;

(3) triggering reporting of the overlay pReport when the overlay pReport function configuration is reconfigured;

(4) UE initiated non-handover random access

If the user terminal UE allocates new uplink resources in the current TTI, if the new uplink resources are reset from the last MAC, the new uplink resources are allocated, and then the periodic coverage-Timer is started;

if at least one overlay pRep has been triggered or there is an overlay trigger for the first time since the last time an overlay pRep was sent and the allocated uplink resources are sufficient to send an overlay pRep and header, then:

calculating a value carried by filling an overlay;

indicating a packet grouping flow;

starting or restarting the periodoverlap-Timer;

cancel all triggered overlageports.

When the preset information reporting condition is met, the user terminal executes step S102 to generate overlapped MacCE information;

the overlapping MacCE information includes a difference between the signal quality of the strongest cell and the signal quality of the strongest neighboring cell of the same frequency, and a path loss level.

The user terminal measures overlapping information in an initial access and connection state. Specifically, for the non-connection state, after the UE physical layer performs the cell search process, the UE completes the RSRP measurement of the serving cell and completes the RSRP measurement of the strongest co-frequency neighbor cell, and the RSRP measurement result may be used to represent the cell signal quality.

Then, the UE uses the difference deltaRsrp between the RSRP value measured by the cell and the RSRP value of the strongest neighbor cell as the difference between the signal quality of the strongest cell and the signal quality of the strongest neighbor cell in the same frequency, determines a deltaRsrp report value according to the difference, and uses the deltaRsrp report value as a part of the overlapped MacCE information.

In addition, the UE also measures the path loss with the base station, determines the path loss level according to the path loss value, and uses the calculated path loss level as a part of the overlapped MacCE information.

Exemplary, the embodiment of the application discloses that the correspondence between the path loss and the path loss level is shown in table 1, and the correspondence between the deltaRsrp measured value and the reported value is shown in table 2:

TABLE 1

ReportValue	MesureValue
		pathlossLevel_0	Pathloss<＝60
pathlossLevel_1	60<Pathloss<＝70
		pathlossLevel_2	70<Pathloss<＝80
pathlossLevel_3	80<Pathloss<＝90
		pathlossLevel_4	90<Pathloss<＝100
pathlossLevel_5	100<Pathloss<＝110
		pathlossLevel_6	110<Pathloss<＝120
pathlossLevel_7	120<Pathloss

TABLE 2

ReportValue	MesureValue
		deltaRsrp_0	deltaRsrp<＝-5
deltaRsrp_1	-5<deltaRsrp<＝-4
		deltaRsrp_2	-4<deltaRsrp<＝-3
deltaRsrp_3	-3<deltaRsrp<＝-2
		...	...
deltaRsrp_29	23<deltaRsrp<＝24
		deltaRsrp_30	24<deltaRsrp<＝25
deltaRsrp_31	26<deltaRsrp

Then, the user terminal UE may determine the specific information content included in the overlapped MacCE information according to the correspondence between the actual measured value and the above tables 1 and 2.

And then, the user terminal combines the difference deltaRsrp between the signal quality of the strongest cell and the signal quality of the strongest adjacent cell with the same frequency with the path loss level to obtain overlapped MacCE information.

For example, the data format of the overlapping MacCE information overlapReport MacCE is defined as an 8-bit data format, where 3 bits are used to carry the path loss class, and 5 bits are used to carry the RSRP strength difference deltaRsrp between the present cell (strongest cell) and the strongest neighboring cell of the same frequency, and the data format is shown in fig. 2. Wherein the first 3 bits of overlapReport MacCE are used to carry the path loss class information and the last 5 bits are used to carry deltaRsrp.

S103, the user terminal sends the overlapped MacCE information to a base station;

illustratively, embodiments of the present application extend the 11001LCID reserved for UL-SCH in LTE to overlapReport MacCE use, i.e., for the user terminal to report overlapping MacCE information to the base station. The logical channel LCID of the extended uplink shared channel is shown in table 3:

TABLE 3 Table 3

Index	LCID values
		00000	CCCH
00001-01010	Identity of the logical channel
		01011-11000	Reserved
11001	overlapReport
		11010	Power Headroom Report
11011	C-RNTI
		11100	Truncated BSR
11101	Short BSR
		11110	Long BSR
11111	Padding

Based on the above setting, the user terminal transmits the overlapping MacCE information to the base station through the reserved uplink channel.

In addition, for the user terminal in the non-connection state, after the physical layer of the user terminal UE completes the RSRP measurement of the cell after the self-cell searching process, the RSRP measurement of the strongest same-frequency neighbor cell is completed, and after the RSRP value measured by the cell and the strongest RSRP value are reported to the UE Mac layer, random access is initiated.

For a connected user terminal, through the measurement configuration of the same-frequency neighbor cells, the physical layer periodically measures the RSRP of the cell and the RSRP of the strongest same-frequency neighbor cells according to the 3GPP requirements, after reporting to the Mac layer, the reported value always calculates the RSRP measured value difference of the serving cell and the strongest neighbor cells each time, and carries out real-time filtering (if the reported value is reported for the first time, the measured value is used as deltaRrp, otherwise, the historical filtering is participated, and the general filtering factor is 0.8):

deltaRsrpMesure＝RsrpServeCell-RsrpStrongestintraCell

deltaRsrp＝deltaRsrp*alpha+(1-alpha)*deltaRsrpMesure

in the processing process of the UE side, the physical layer is required to measure the RSRP signal of the strongest neighbor cell with the same frequency before random access, trigger the reporting of the overlay pReport and carry the overlay pReport on msg 3. For initial access, the UE needs to prepare an overlay information measurement value before initiating random access; the random access of the connection state is realized, so long as the same-frequency neighbor cell measurement is configured for the UE, relevant measured values exist, and no additional processing is needed; the switching random access does not need to report the MacCE, the measurement does not need to be additionally processed, the target base station side can estimate the path loss according to the reported PHR, and the deltaRsrp only needs to adopt a switching threshold.

If the physical layer can not detect the adjacent area signal, the RSRP value reported by the physical layer ensures that the deltaRSRP calculated by the high layer is mapped to more than 26.

S104, the base station receives overlapped MacCE information sent by the user terminal;

s105, the base station calculates uplink power adjustment parameters according to the received overlapped MacCE information;

specifically, for the random access scenarios such as initial access or resynchronization of the UE, if the UE is in a near point but in an overlapping coverage area, the initial transmission power is too high to cause strong interference to the neighboring cell, and at this time, the initial service power of the UE needs to be reduced by configuring the UE-level parameter p0_ue_pusch.

The base station determines whether the UE is located in the overlapping coverage area of the same-frequency cell according to the overlapping coverage area information reported by the user terminal through msg3, if so, and determines that the UE is located in a non-far point of the overlapping coverage area according to the path loss level between the UE and the base station, the base station reduces the interference of the initial access of the overlapping coverage area UE to the network by calculating an uplink power adjustment parameter.

According to the definition of cell-level PUSCH open loop transmitting power, calculating the power spectrum density received by a service base station, considering a certain interference level, limiting the SINR (Signalto Interference plus Noise Ratio ) of the UE in the overlapped coverage area received by a target base station, and calculating the P0_UE_PUSCH power adjustment parameter of the UE level, wherein the P0_UE_PUSCH power adjustment parameter is the calculated uplink power adjustment parameter.

The definition formula of the cell-level PUSCH open loop transmission power is as follows:

SinrReceived＝P _{0_NOMINAL_PUSCH} +P _0-UE-PUSCH -(1-a)*PLMesure+116.4-IoT＜＝deltaRsrpMeasure

P _0-UE-PUSCH ＜＝deltaRsrpMeasure+(1-a)*PLMeasure-P _{0_NOMINAL_PUSCH} +(IoT-116.4)

finally, the base station takes the maximum value of the inequality p0_ue_pusch and limits the final value to a minimum value of p0_ue_pusch or less.

S106, the base station sends the uplink power adjustment parameters to the user terminal;

Specifically, for the initial access scenario of the UE, the base station directly transfers the calculated p0_ue_pusch to the RRC, and configures the UE with the RRC connection establishment or reestablishment message.

In the random access process of other connection states, the base station transmits the calculated P0_UE_PUSCH subsequent reconfiguration message to the user terminal UE.

S107, the user terminal receives the uplink power adjustment parameter sent by the base station;

s108, the user terminal adjusts the power of the uplink transmitted signal according to the received uplink power adjustment parameter.

Specifically, after receiving the uplink power adjustment parameter sent by the base station, the user terminal analyzes the uplink power adjustment parameter to obtain a p0_ue_pusch power adjustment parameter therein, and adjusts PUSCH transmission power according to the obtained p0_ue_pusch power adjustment parameter to meet PUSCH power requirements and target SINR requirements of the base station.

The above processing steps realize the uplink power control of the user terminal which is initially accessed. When the ue has been accessed to the base station, it may also enter the overlapping coverage area along with the movement of the ue, at this time, the overlapping MacCE information may also be reported to the base station by the ue, and the base station may control the uplink power of the ue according to the overlapping MacCE information reported by the ue. Specifically, the process of reporting overlapping MacCE information to the base station by the user terminal may be performed with reference to the description of steps S101 to S103 described above. After receiving overlapped MacCE information reported by a user terminal, a base station adjusts a closed loop power control target convergence SINR of the user terminal according to the received overlapped MacCE information, calculates to obtain an uplink power adjustment parameter, and sends the uplink power adjustment parameter to the user terminal;

specifically, the base station accurately and reasonably adjusts the final closed loop power control target convergence SINR of the overlapping region UE by using deltaRsrp information in overlapReport MacCE reported by the user terminal, limits the transmission power of the overlapping region UE from the angle of closed loop power control to basically not cause additional interference to the neighboring region, and ensures that the overlapping region UE and the target convergence SINR of the overlapping region UE are finely matched with each other, and the adjustment formula is as follows:

if(deltaRsrp＜deltaRsrpThr)

SINR _{target_Final} ＝min(SINR _target ,max(deltaRsrp,0))

else

SINR _{target_Final} ＝SINR _target

in the above, SINR _target The UE target convergence signal-to-interference-and-noise ratio curve set for a typical closed loop power control algorithm is typically differentiated by UE path loss.

And the user terminal receives the uplink power adjustment parameter sent by the base station and adjusts the uplink signal power by utilizing the parameter.

Specifically, the ue receives a TPC (Transmitter Power Control, transmit power control) command issued by the base station, where the TPC command carries the uplink power adjustment parameter, that is, the power adjustment parameter calculated according to the target convergence SINR. And the user terminal adjusts the self uplink signal power according to the received TPC command to work together with the base station, so that the SINR reaches the target value, and interference to the adjacent cell is avoided.

As can be seen from the above description, by adopting the interference suppression method provided by the embodiment of the present application, the user terminal in the overlapping coverage area of the co-frequency cell sends the overlapping MacCE information to the base station in real time, so that the base station calculates uplink power adjustment parameters according to the overlapping MacCE information reported by the user terminal and sends the uplink power adjustment parameters to the user terminal, and the user terminal adjusts its own uplink signal power according to the uplink power adjustment parameters sent by the base station, thereby avoiding interference to the neighboring cell caused by excessive uplink signal power of the user terminal in the overlapping coverage area. The technical scheme can realize the real-time inhibition of the base station to the uplink signal power of the user terminal in the overlapped coverage area, thereby ensuring the network performance of the overlapped coverage area.

Based on the above description, the embodiments of the present application also separately provide an interference suppression method applied to a user terminal, as shown in fig. 3, where the method includes:

when a preset information reporting condition is met, executing step S301 to generate overlapped MacCE information; the overlapped MacCE information comprises a difference value between the signal quality of the strongest cell and the signal quality of the strongest adjacent cell with the same frequency and a path loss level;

s302, sending the overlapped MacCE information to a base station, and enabling the base station to determine an uplink power adjustment parameter according to the overlapped MacCE information;

s303, receiving the uplink power adjustment parameter sent by the base station;

s304, adjusting the power of the uplink transmitted signal according to the uplink power adjustment parameter.

Furthermore, the embodiment of the application also provides an interference suppression method applied to the base station, and referring to fig. 4, the method includes:

s401, receiving overlapped MacCE information sent by a user terminal;

s402, calculating uplink power adjustment parameters according to the overlapped MacCE information;

s403, the uplink power adjustment parameter is sent to the user terminal, so that the user terminal adjusts the power of the uplink sent signal according to the uplink power adjustment parameter.

Specifically, the specific processing content of each step of the interference suppression method shown in fig. 3 and fig. 4 is please refer to the corresponding content of the method embodiment shown in fig. 1, and is not repeated here.

Further, in order to more vividly describe the processing procedure of the interference suppression method according to the embodiment of the present application, the following description is made with reference to examples:

assuming that the base station transmits a reference signal of 11 dBm/unit physical resource, the RSRP of a certain UE received to a serving cell is fixed to be-69 dBm/unit physical resource, and the RSRP of the UE received to the strongest neighbor cell is fixed to be-71 dBm/unit physical resource. Configuring a cell-level parameter a of UE transmitting power to be 0.8, and configuring a cell-level target receiving power spectrum value P _{0_NOMINAL_PUSCH} For-75 dBm, the initial access challenge of the algorithm configuration is 10dB.

Step one: the UE completes the search of the service cell and the search of the strongest same-frequency neighbor cell before random access, and measures that RSRP of the service cell and the strongest neighbor cell are respectively-69 dBm/unit physical resource and-71 dBm/unit physical resource, and the path loss is calculated to be 80dB.

Step two: the UE fills path loss grade information and deltaRsrp information in a random access flow Msg3, wherein the path loss grade information and deltaRsrp information are respectively 80dB and 2dB, the mapped index values are pathloss level_2 and deltaRsrp_7 respectively, the finally reported overlapping information MacCE is 01000111, and the LCID corresponding to the MacCE is 11001.

Step three: the base station receives the msg3 of the UE, analyzes the msg3 to carry overlapReport MacCE value of 01000111, and performs table look-up to calculate deltaRsrp=2 dB, wherein the path loss range is 70< path < - > 80.

Step four: the base station judges that the UE is in close point overlapping according to the initial access flow, and calculates the P0_UE_PUSCH of the UE:

P _0-UE-PUSCH ＜＝2+0.2*80-(-75)+10-116.4

P _0-UE-PUSCH ＜＝-13.4

step five: the base station submits the calculated P0_UE_PUSCH= -13.4 to the group RRC connection configuration message, maps the RRC connection configuration message to the P0_UE_PUSCH (-8, the minimum is-8) carried in the radio resource control configuration, and transmits the RRC connection configuration message to the UE.

Step six: and the UE receives the newly configured P0_UE_PUSCH and adjusts the PUSCH transmission power spectrum density of the UE.

Step seven: in the connected state, the UE performs measurement according to the same-frequency cell measurement configuration of RRC configuration, filters the measurement value and stabilizes deltaRsrp at 2. The UE triggers overlapReport MacCE reporting according to the perioverlap-Timer.

Step 8: and the base station performs closed-loop power control convergence, and limits the convergence according to deltaRsrp (2 dB) reported by the UE when determining the target SINR. According to the normal power convergence criterion, the path loss of the UE is about 80dB, and the target SINR is converged _target Far greater than 2dB, the final target converged sinr=2 dB, limited by deltaRsrp, since the UE is in the overlap region.

Step 9: the base station issues TPC commands to the user terminal based on the target converged SINR.

Step 10: and the user terminal controls the uplink signal power according to the received TPC command.

Corresponding to the above-mentioned interference suppression method applied to the ue, the embodiment of the present application further provides an interference suppression device applicable to the ue, as shown in fig. 5, where the device includes:

a first memory 100 and a first processor 110;

wherein the first memory 100 is configured to store a program;

the first processor 110 is configured to implement the above-mentioned respective processing steps of the interference suppression method applicable to the user terminal by executing the program in the first memory 100.

The specific working contents of the first processor 110 include:

receiving the uplink power adjustment parameter sent by the base station;

Optionally, the meeting the preset information reporting condition includes:

or the water-soluble polymer can be used for the water-soluble polymer,

Optionally, the generating overlapping MacCE information includes:

Optionally, the first processor 110 is further configured to:

receiving a TPC command sent by the base station, and adjusting uplink signal power by utilizing the TPC command; and the generated power control command carries an uplink power adjustment parameter determined based on the target convergence SINR.

Corresponding to the above-mentioned interference suppression method applicable to the base station, the embodiment of the present application further provides an interference suppression device applicable to the base station, as shown in fig. 6, where the device includes:

a second memory 200 and a second processor 210;

wherein the second memory 200 is used for storing a program;

the second processor 210 is configured to implement the above-mentioned respective processing steps of the interference suppression method applicable to the base station by executing the program in the second memory 200.

The specific working contents of the second processor 210 include:

receiving overlapped MacCE information sent by a user terminal;

and sending the uplink power adjustment parameter to the user terminal so that the user terminal adjusts the power spectrum density of the uplink sent signal according to the uplink power adjustment parameter.

Optionally, the second processor 210 is further configured to:

according to the latest reported overlapped MacCE information, adjusting the closed loop power control target convergence SINR of the user terminal;

and according to the target convergence SINR, indicating the user terminal to adjust the uplink signal power.

Specifically, the second processor 210 generates a TPC command according to the target convergence SINR and sends the TPC command to the ue, so that the ue adjusts the uplink signal power.

Specifically, the specific working content of each part in the above embodiments of each interference suppression device is referred to the content of the above method embodiments, which is not described herein again.

For the foregoing method embodiments, for simplicity of explanation, the methodologies are shown as a series of acts, but one of ordinary skill in the art will appreciate that the present application is not limited by the order of acts described, as some acts may, in accordance with the present application, occur in other orders or concurrently. Further, those skilled in the art will also appreciate that the embodiments described in the specification are all preferred embodiments, and that the acts and modules referred to are not necessarily required in the present application.

It should be noted that, in the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described as different from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other. For the apparatus class embodiments, the description is relatively simple as it is substantially similar to the method embodiments, and reference is made to the description of the method embodiments for relevant points.

The steps in the methods of the embodiments of the present application may be sequentially adjusted, combined, and pruned according to actual needs.

The modules and sub-modules in the device and the terminal of the embodiments of the present application may be combined, divided, and deleted according to actual needs.

In the embodiments provided in the present application, it should be understood that the disclosed terminal, apparatus and method may be implemented in other manners. For example, the above-described terminal embodiments are merely illustrative, and for example, the division of modules or sub-modules is merely a logical function division, and there may be other manners of division in actual implementation, for example, multiple sub-modules or modules may be combined or integrated into another module, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or modules, which may be in electrical, mechanical, or other forms.

The modules or sub-modules illustrated as separate components may or may not be physically separate, and components that are modules or sub-modules may or may not be physical modules or sub-modules, i.e., may be located in one place, or may be distributed over multiple network modules or sub-modules. Some or all of the modules or sub-modules may be selected according to actual needs to achieve the purpose of the embodiment.

In addition, each functional module or sub-module in each embodiment of the present application may be integrated in one processing module, or each module or sub-module may exist alone physically, or two or more modules or sub-modules may be integrated in one module. The integrated modules or sub-modules may be implemented in hardware or in software functional modules or sub-modules.

Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative elements and steps are described above generally in terms of functionality in order to clearly illustrate the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software 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 application.

The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software unit executed by a processor, or in a combination of the two. The software elements may be disposed in Random Access Memory (RAM), memory, read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

Finally, it is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An interference suppression method, applied to a user terminal, comprising:

when a preset information reporting condition is met, generating overlapped MacCE information; wherein the overlapping MacCE information includes a difference between a signal quality of a strongest cell and a signal quality of a same-frequency strongest neighbor cell, and a path loss level determined based on a path loss measured between the user terminal and a base station;

sending the overlapped MacCE information to the base station, so that the base station determines an uplink power adjustment parameter according to the overlapped MacCE information;

receiving the uplink power adjustment parameter sent by the base station;

and adjusting the power of the uplink transmitted signal according to the uplink power adjustment parameter so as to avoid interference to the adjacent cell.

2. The method according to claim 1, wherein the meeting of the preset information reporting condition includes:

or alternatively, the process may be performed,

3. The method of claim 2, wherein the measured reference signal meets a preset reference signal variation requirement, comprising:

4. The method of claim 1, wherein the generating overlapping MacCE information comprises:

5. The method of claim 4 wherein the first 3 bits of the overlapping MacCE information carry path loss level information and the last 5 bits of the overlapping MacCE information carry signal quality difference information.

6. The method according to claim 1, wherein the method further comprises:

receiving a transmitting power control command sent by the base station, and adjusting the power of an uplink signal by utilizing the received transmitting power control command; and the transmitting power control command carries an uplink power adjustment parameter determined based on the target convergence SINR.

7. An interference suppression method, applied to a base station, comprising:

receiving overlapped MacCE information sent by a user terminal, wherein the overlapped MacCE information comprises a difference value between the signal quality of the strongest cell and the signal quality of the strongest adjacent cell with the same frequency, and a path loss level, and the path loss level is determined based on the path loss measured between the user terminal and a base station;

8. The method of claim 7, wherein the calculating uplink power adjustment parameters according to the overlapping MacCE information includes:

9. The method of claim 7, wherein the sending the uplink power adjustment parameter to the user terminal comprises:

10. The method of claim 7, wherein the method further comprises:

11. An interference suppression device, for application to a user terminal, the device comprising:

a first memory and a first processor;

wherein the first memory is used for storing a program;

the first processor is configured to implement the interference suppression method according to any one of claims 1 to 6 by running a program in the first memory.

12. An interference suppression device for use in a base station, said device comprising:

a second memory and a second processor;

wherein the second memory is used for storing a program;

the second processor is configured to implement the interference suppression method according to any one of claims 7 to 10 by running a program in the second memory.