CN104581790B - A kind of interruption detection method and device of low-power wireless access node - Google Patents

Abstract

The embodiment of the present invention discloses a low-power wireless access node interruption detection method and device, wherein the method includes: obtaining the node information of a small cell in an abnormal state marked as SC _abn ; according to the obtained node information and The preset node selection algorithm, among the small cells contained in the current macrocell, determines the small cell adjacent to the SC _abn ; sends abnormal information to the determined small cell; receives the user served by the small cell sent by the determined small cell SC device state information of the terminal device; obtain MC device state information of the user terminal device currently served by the macrocell; detect whether the SC _abn is interrupted according to the above-mentioned various correlation information. By applying the solutions provided by the embodiments of the present invention, the network communication overhead can be reduced.

Description

Method and device for interruption detection of low-power wireless access node

technical field

The invention relates to the technical field of mobile communication, in particular to a method and device for detecting interruption of a low-power wireless access node.

Background technique

As the performance of mobile terminals becomes more and more powerful, users' demands for communication and access to mobile networks through mobile terminals are increasing. Therefore, in a cellular heterogeneous network, if mobile terminals can be provided with high-quality communication services It will bring better user experience to users.

In a cellular heterogeneous network, a macrocell (macro cell) contains multiple small cells (low-power wireless access nodes). Therefore, the number of small cells in a cellular heterogeneous network is large, and the probability of small cell interruption increases. , in this way, the communication quality will be seriously affected.

In practical applications, in order to ensure the communication quality, the macrocell needs to detect the interrupted small cell in time and deal with it accordingly. In the prior art, when a macrocell detects whether a small cell is interrupted, it needs to obtain the correlation between the user terminal equipment served by each small cell in the current macrocell and several small cells around the small cell, and according to the obtained correlation, detect The smallcell where the interrupt occurred in the current macrocell. In this case, the amount of information that the macrocell needs to obtain is large, which increases the overhead of network communication. In addition, all the small cells in the macrocell need to feed back information to the macrocell, thus reducing the service performance of the small cells.

Contents of the invention

The embodiment of the present invention discloses a terminal detection method and device of a low-power wireless access node, so as to reduce the overhead of network communication and improve the service performance of small cells.

In order to achieve the above object, an embodiment of the present invention discloses a method for detecting interruption of a low-power wireless access node, which is applied to a macrocell. A macrocell includes multiple low-power wireless access node small cells. The method includes:

Obtain the node information of the small cell in the abnormal state marked as SC _abn ;

According to the obtained node information and a preset node selection algorithm, among the small cells included in the current macrocell, determine a small cell adjacent to the SC _abn ;

sending abnormal information to the determined small cell, wherein the abnormal information includes: node information of the SC _abn ;

receiving SC device state information sent by the determined small cell, and the user terminal device served by the small cell, wherein the SC device state information includes the difference between the user terminal device served by the determined small cell and the SC _abn Correlation information between;

Obtaining MC device state information of the user terminal device served by the current macrocell, wherein the MC device state information includes: correlation information between the user terminal device served by the current macrocell and the SC _abn ;

Detecting whether the SC _abn is interrupted according to the correlation information carried in the SC device state information and the correlation information included in the MC device state information.

In a specific implementation of the present invention, the obtaining the node information of the smallcell in the abnormal state marked as SC _abn includes:

receiving node correlation information sent by the user terminal device, wherein the node correlation information includes: correlation information between the user terminal device and each adjacent small cell;

In determining the node correlation information, the small cell corresponding to the node correlation satisfying the following relationship is a small cell in an abnormal state, which is recorded as: SC _abn ,

|R _c -R _d |>Th ₁

Wherein, R _c is the correlation information between the user terminal equipment included in the node correlation information and a small cell denoted as SC _a adjacent to it, and R _d is the user terminal equipment recorded in the preset database and the Correlation information between the aforementioned SC _a , Th ₁ is the preset first threshold;

Obtain node information of the SC _abn .

In a specific implementation of the present invention, the obtaining the node information of the smallcell in the abnormal state marked as SC _abn includes:

receiving the node information of the small cell in the abnormal state, which is recorded as SC _abn , sent by the small cell providing services for the user terminal equipment;

Wherein, the small cell that provides services for the user terminal equipment obtains the node information of the SC _abn in the following manner:

The small cell that provides services for the user terminal device receives node correlation information sent by the user terminal device, wherein the node correlation information includes: correlation information between the user terminal device and its neighboring small cells;

In determining the node correlation information, the small cell corresponding to the node correlation satisfying the following relationship is a small cell in an abnormal state, which is recorded as: SC _abn ,

|R _c -R _d |>Th ₂

Wherein, R _c is the correlation information between the user terminal equipment included in the node correlation information and a small cell denoted as SC _a adjacent to it, and R _d is the user terminal equipment recorded in the preset database and the Correlation information between the above-mentioned SC _a , Th ₂ is the preset second threshold;

Obtain node information of the SC _abn .

In a specific implementation manner of the present invention, according to the obtained node information and the preset node selection algorithm, among the small cells included in the current macrocell, determining the small cell adjacent to the SC _abn includes:

Sorting the small cells included in the current macrocell in the order of the distance between each small cell and the SC _abn from near to far;

Determining a first preset number of small cells ranked first as small cells adjacent to the SC _abn .

In a specific implementation manner of the present invention, the detecting whether the SC _abn is interrupted according to the correlation information carried in the SC device status information and the correlation information included in the MC device status information includes :

The correlation information carried in the SC device state information and the correlation information included in the MC device state information are arranged according to the order of the distance between the geographic location of the user terminal device and the SC _abn from shortest to farthest. sort;

Detecting whether the SC _abn is interrupted according to the correlation between the second preset number of user terminal devices ranked first and the SC _abn .

In a specific implementation manner of the present invention, the detecting whether the SC _abn is interrupted according to the correlation between the second preset number of user terminal devices ranked first and the SC _abn includes:

Calculate the likelihood ratio of the SC _abn according to the correlation between the second preset number of top-ranked user terminal equipment and the SC _abn , where the likelihood ratio is used to represent P _ra and P The ratio between _rn , P _ra is used to indicate the probability that the value of the correlation between the user terminal and the SC _abn occurs when the SC _abn is in an abnormal state, and P _rn is used to indicate the relationship between the user terminal and the SC _abn The probability that the value of inter-correlation occurs when said SC _abn is in a normal state;

judging whether the likelihood ratio is greater than a preset third threshold;

If not, it is determined that the SC _abn has been interrupted.

In order to achieve the above object, the embodiment of the present invention discloses an interruption detection device of a low-power wireless access node, which is applied to a macrocellular macrocell, and a macrocell includes a plurality of low-power wireless access node small cells, and the device includes:

A node information obtaining module, configured to obtain node information of a small cell in an abnormal state marked as SC _abn , wherein the SC _abn is;

An adjacent node determination module, configured to determine a small cell adjacent to the SC _abn among the small cells included in the current macrocell according to the obtained node information and a preset node selection algorithm;

An abnormal information sending module, configured to send abnormal information to the determined small cell, wherein the abnormal information includes: node information of the SC _abn ;

The device status information receiving module is configured to receive SC device status information sent by the determined small cell and the user terminal device served by the small cell, wherein the SC device status information includes the determined user terminal served by the small cell Correlation information between the device and said SC _abn ;

A device state information obtaining module, configured to obtain MC device state information of the user terminal device served by the current macrocell, wherein the MC device state information includes: the correlation between the user terminal device served by the current macrocell and the SC _abn sexual information;

An interruption detection module, configured to detect whether the SC _abn is interrupted according to the correlation information carried in the SC device status information and the correlation information included in the MC device status information.

In a specific implementation of the present invention, the adjacent node determination module includes:

The node sorting submodule is used to sort the small cells contained in the current macrocell in order of the distance between each small cell and the SC _abn from near to far;

The adjacent node determination submodule is configured to determine that a first preset number of small cells ranked first are small cells adjacent to the SC _abn .

In a specific implementation manner of the present invention, the interrupt detection module includes:

The correlation information sorting submodule is configured to sort the correlation information carried in the SC device status information and the correlation information included in the MC device status information according to the distance between the geographic location of the user terminal device and the SC _abn The distance between them is sorted in order from near to far;

The interruption detection sub-module is configured to detect whether the SC _abn is interrupted according to the correlation between the second preset number of user terminal devices ranked first and the SC _abn .

In a specific implementation of the present invention, the interrupt detection submodule includes:

A likelihood ratio calculation unit, configured to calculate the likelihood ratio of the SC _abn according to the correlation between the second preset number of user terminal devices that are ranked higher and the SC _abn , wherein the likelihood ratio , is used to represent the ratio between P _ra and P _rn , P _ra is used to represent the probability that the value of the correlation between the user terminal and the SC _abn occurs when the SC _abn is in an abnormal state, and P _rn is used to represent The probability that the value of the correlation between the user terminal and the SC _abn occurs when the SC _abn is in a normal state;

a likelihood ratio judging unit, configured to judge whether the likelihood ratio is greater than a preset third threshold;

The interruption determination unit is configured to determine that the SC _abn has been interrupted when the determination result of the likelihood ratio determination unit is yes.

As can be seen from the above, in the solution provided by the embodiment of the present invention, after obtaining the node information of the small cell in an abnormal state, the small cell adjacent to the small cell is determined, and according to the determined device state information and The device status information of the user terminal device currently served by the macrocell determines whether the small cell in the abnormal state is interrupted. It can be seen that in the solution provided by the embodiment of the present invention, only the device status of the user terminal device served by the small cell adjacent to the small cell in the abnormal state and the device status information of the user terminal device served by the current macrocell can be obtained to detect the current The small cell of the terminal occurs in the macrocell, and there is no need to obtain the device status information of the user terminal equipment served by all the small cells in the current macrocell. Therefore, the network communication overhead can be reduced. In addition, because it is not necessary for all the small cells in the current The macrocell feeds back information, so it can improve the service performance of the small cell.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

FIG. 1 is a schematic flowchart of a first method for detecting interruption of a low-power wireless access node provided by an embodiment of the present invention;

FIG. 2 is a schematic flowchart of a second method for detecting interruption of a low-power wireless access node provided by an embodiment of the present invention;

FIG. 3 is a schematic flowchart of a third method for detecting interruption of a low-power wireless access node provided by an embodiment of the present invention;

FIG. 4 is a schematic flowchart of a method for a small cell to obtain node information provided by an embodiment of the present invention;

Fig. 5 is a schematic structural diagram of an interruption detection device for a low-power wireless access node provided by an embodiment of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Fig. 1 is a schematic flowchart of a low-power wireless access node interruption detection method provided by an embodiment of the present invention. The method is applied to a macrocellular macrocell, and a macrocell may contain multiple low-power wireless access node small cells. include:

S101: Obtain node information of a small cell in an abnormal state marked SC _abn .

The above node information of the SC _abn may include information such as the serial number of the SC _abn and the geographic location of the SC _abn , which is not limited in this application.

Specifically, the current macrocell can obtain information such as the geographic location of the SC _abn according to the number of the SC _abn .

The small cells in the abnormal state in the current macrocell may be determined by the current macrocell, or may be determined by each small cell in the current macrocell. For details, refer to the embodiments shown in FIG. 2 and FIG. 3 .

S102: According to the obtained node information and a preset node selection algorithm, among the small cells included in the current macrocell, determine a small cell adjacent to the SC _abn .

It is well known to those skilled in the art that the closer the distance between the user terminal equipment and the small cell is, the less the equipment state information of the user terminal equipment is affected by environmental factors such as shadow fading and user activities; the user used for interruption detection The more status information of the terminal device, the more it is beneficial to improve the accuracy of detecting whether the small cell in the abnormal state is interrupted. Therefore, the information related to the SC _{abn can be obtained from the status information of multiple user terminal devices close to the SC abn .} information, and then detect whether the SC _abn is interrupted according to the obtained information.

Wherein, the device state information of the user terminal device may include correlation information between the user terminal device and a specific smallcell, for example, correlation information with SC _abn and the like.

In addition, each small cell can cover a small range, generally within the range of 10 meters to 200 meters, and the number of user terminal devices that each small cell can serve is small. Therefore, in practical applications, the middle distance of the current macrocell can Multiple small cells close to the SC _abn obtain device status information of multiple user terminal devices close to the SC _abn .

In view of the above situation, when determining the small cells adjacent to the SC _abn , the small cells contained in the current macrocell can be sorted according to the order of the distance between each small cell and the SC _abn from near to far, and then the top-ranked small cells can be determined. A preset number of small cells are small cells adjacent to the SC _abn .

S103: Send abnormal information to the determined small cell.

Wherein, the above abnormal information needs to include at least: node information of SC _abn .

S104: Receive SC device state information sent by the determined small cell and the user terminal device served by the small cell.

Wherein, the SC device status information needs to carry at least the correlation information between the determined user terminal equipment served by the small cell and the SC _abn , and of course, other information can also be carried, for example, the determined user terminal equipment served by the small cell The geographic location information and the like are not limited in this application.

Specifically, the correlation information between the user terminal equipment and the SC _abn can be represented by the RSRP (Reference Signal Receiving Power, reference signal received power) value between the user terminal equipment and the SC _abn . Of course, in practical applications, it can be represented by The value representing the correlation information between the UE and the SC _abn is not limited to the above RSRP value.

It can be known from the foregoing description that the determined small cell may be multiple small cells. In this case, each small cell obtains the SC device status information of the user terminal equipment served by each small cell, and then each small cell obtains the SC device status information of each small cell respectively. The SC device status information is sent to the current macrocell.

S105: Obtain MC device status information of the user terminal device currently served by the macrocell.

In the process of user terminal equipment accessing the network, it can access the network through the smallcell contained in the current macrocell, or it can access the network through the current macrocell, that is, the current macrocell and the current macrocell Each small cell has a corresponding user terminal device to be served. Therefore, in the process of detecting whether the SC _abn is interrupted, in addition to the above SC device status information, the MC device status information can also be obtained.

The above MC device status information may include: the correlation information between the UE currently served by the macrocell and the SC _abn . Similar to the SC device state information, the MC device state information may also include other information, for example, geographical location information of the user terminal device currently served by the macrocell, and the like.

S106: Detect whether the SC _abn is interrupted according to the correlation information carried in the SC device status information and the correlation information included in the MC device status information.

Since each piece of correlation information carried in the SC device state information and each piece of correlation information included in the MC device state information correspond to different distances between the user terminal equipment and the SC _abn , and according to the foregoing description, the user terminal The closer the device is to the SC _abn , the less the correlation information between the user terminal equipment and the SC _abn will be affected by environmental factors such as shadow fading and user activities. Therefore, in practical applications, priority can be given to using the ones closest to the SC _abn The correlation information between the user terminal equipment and the SC _abn detects whether the SC _abn is interrupted.

Specifically, the correlation information carried in the SC device status information and the correlation information included in the MC device status information may be sorted in the order of the distance between the geographic location of the user terminal device and the SC _abn from near to far , and then detect whether the SC _abn is interrupted according to the correlation between the second preset number of user terminal devices that are ranked higher and the SC _abn .

Optionally, when detecting whether the SC _abn is interrupted according to the correlation between the second preset number of user terminal devices ranked first and the SC _abn , the following steps may be implemented:

Calculating the likelihood ratio of the SC _abn according to the correlation between the second preset number of user terminal equipments ranked first and the SC _abn ;

judging whether the aforementioned likelihood ratio is greater than a preset third threshold;

If it is not greater than, it is determined that SC _abn has been interrupted.

Among them, the above-mentioned likelihood ratio is used to represent the ratio between P _ra and P _rn , P _ra is used to represent the probability that the value of the correlation between the user terminal and SC _abn occurs when SC _abn is in an abnormal state, and P _rn It is the probability that the numerical value used to represent the correlation between the user terminal and the SC _abn occurs when the SC _abn is in a normal state.

Specifically, the likelihood ratio of SC _abn can be calculated by Bayesian criterion. Of course, in practical applications, it is not limited to calculating the likelihood ratio of SC _abn by Bayesian criterion. Those skilled in the art can also calculate the likelihood ratio according to the likelihood ratio For specific meanings, other criteria are selected for calculation, and will not be listed here.

It should be noted that the solutions provided by the above embodiments only illustrate how to detect whether a small cell in an abnormal state in the current macrocell is interrupted. In practical applications, it may also be necessary to detect whether multiple small cells in an abnormal state are interrupted at the same time. For detecting each small cell in an abnormal state, the solutions provided in the above-mentioned embodiments can be used.

Due to the geographical location of the user terminal equipment is different, the user terminal equipment may access the network through the current macrocell, and may also access the network through any small cell contained in the current macrocell, so the current macrocell can receive the user terminal equipment it serves The small cell can receive the information sent by the user terminal equipment it serves, and the current macrocell and the small cell can determine the small cell in an abnormal state according to the received information. The following describes how the current macrocell and small cell determine the small cell in an abnormal state through two specific embodiments.

In a specific embodiment of the present invention, referring to FIG. 2 , it provides a schematic flow chart of another interruption detection method for a low-power wireless access node. Compared with the foregoing embodiments, in this embodiment, the above-mentioned S101 includes :

S101A: Receive node correlation information sent by the user terminal equipment.

Wherein, the node correlation information includes at least the correlation information between the user terminal equipment and each adjacent small cell, of course, the node correlation information may also include other information, for example, the geographical location information of the user terminal equipment, etc. Wait.

S101B: In determining the node correlation information, the small cell corresponding to the node correlation satisfying the relational expression is a small cell in an abnormal state, denoted as: SC _abn .

Specifically, the above relationship can be: |R _c -R _d |>Th ₁ ,

Among them, R _c is the correlation information between the user terminal equipment contained in the node correlation information and an adjacent small cell marked as SC _a , and R _d is the relationship between the user terminal equipment and SC _a recorded in the preset database. Correlation information among them, Th ₁ is the preset first threshold.

S101C: Obtain node information of SC _abn .

In the communication network, each small cell has a unique identifier, for example, the small cell number, etc. After S101B determines the SC _abn , the current macrocell can further obtain the geographical location information of the small cell according to the unique identifier of the SC _abn , etc., Then the complete node information of SC _abn is obtained.

In another specific embodiment of the present invention, referring to FIG. 3 , a schematic diagram of a signaling flow of a method for detecting interruption of a low-power wireless access node is provided. Compared with the foregoing embodiments, in this embodiment,

Obtain the node information (S101) of the small cell in the abnormal state recorded as SC _abn , which may specifically be:

S101D: Receive the node information of the small cell in the abnormal state, denoted as SC _abn , sent by the small cell providing the service for the user terminal equipment.

It should be noted that, different from the embodiment shown in FIG. 2 , in this embodiment, the node information of the SC _abn is obtained by a small cell that provides services for the user terminal equipment.

Specifically, refer to FIG. 4. FIG. 4 provides a schematic flowchart of a method for a small cell to obtain node information. A small cell that provides services for user terminal equipment can obtain SC _abn node information through this method, including:

S107A: The small cell providing service for the user terminal device receives the node correlation information sent by the user terminal device.

Wherein, the node correlation information at least includes correlation information between the user terminal equipment and each adjacent small cell.

S107B: In determining the node correlation information, the small cell corresponding to the node correlation satisfying the relational expression is a small cell in an abnormal state, denoted as: SC _abn .

Specifically, the above relationship can be: |R _c -R _d |>Th ₂ ,

Among them, R _c is the correlation information between the user terminal equipment contained in the node correlation information and an adjacent small cell marked as SC _a , and R _d is the relationship between the user terminal equipment and SC _a recorded in the preset database. Correlation information among them, Th ₂ is the preset second threshold.

S107C: Obtain node information of the SC _abn .

It can be seen from the above that in the solutions provided by the above embodiments, after obtaining the node information of the small cell in an abnormal state, the small cell adjacent to the small cell is determined, and according to the determined device status information and The device status information of the user terminal device currently served by the macrocell determines whether the small cell in the abnormal state is interrupted. It can be seen that in the solutions provided by the above embodiments, only the device status of the user terminal device served by the small cell adjacent to the small cell in the abnormal state and the device status information of the user terminal device served by the current macrocell can be obtained to detect the current The small cell of the terminal occurs in the macrocell, and there is no need to obtain the device status information of the user terminal equipment served by all the small cells in the current macrocell. Therefore, the network communication overhead can be reduced. In addition, because it is not necessary for all the small cells in the current The macrocell feeds back information, so it can improve the service performance of the small cell.

The above-mentioned outage detection method of the low-power wireless access node will be introduced below through a specific example.

Assume that the user terminal device u accesses the network through a small cell in the current macrocell, and this small cell is recorded as SC _u , and the small cells around u include: SC ₁ , SC ₂ . . . SC _N , N in total.

S107A: u sends node correlation information to SC _u , the node correlation information at least includes correlation information between u and SC ₁ , SC ₂ ... SC _N respectively, denoted as: R _u ;

Among them, the correlation information between u and the small cell is represented by the RSRP value between u and the small cell;

R _u = [r _sc1 r _sc2 ... r _sci ... r _scN ],

r _sci is the RSRP value between u and SC _i at the current moment.

S107B: Calculate the variation ΔR _u corresponding to each element in _Ru ;

in,

ΔR _u = [Δr _sc1 Δr _sc2 ... Δr _sci ... Δr _scN ] = |R _u -R' _u |,

Δr _sci = |r _sci -r' _sci |, R' _u is the data corresponding to R _u recorded in the preset database;

If Δr _sci is greater than the preset threshold, it can be determined that SC _i is a small cell in an abnormal state;

Assuming that Δr _sc1 is greater than a preset threshold, SC ₁ is a small cell in an abnormal state, and SC ₁ is recorded as SC _abn .

It should be noted that Δr _sc1 , Δr _sc2 . . . Δr _scN may respectively correspond to different preset thresholds, and of course, may also correspond to the same preset threshold.

S107C: Obtain the node information of SC _abn , that is, obtain the node information of SC ₁ .

S101D: SC _u sends the node information of SC _abn to the current macrocell.

S102: According to the node information of the SC _abn , select L small cells closest to the SC _abn in the current macrocell as small cells adjacent to the SC _abn .

S103: Send abnormal information to the L small cells determined in S102, where the abnormal information at least includes: the node information obtained in S107C.

S104: The L small cells determined in S102 respectively send the SC device status information of the user terminal equipment served by each small cell to the current macrocell;

The above SC device status information carries the RSRP value determined in S102 between the UE serving the small cell and the SC _abn .

S105: Obtain MC device status information of the user terminal device served by the current macrocell;

The above MC device state information includes the RSRP value between the UE currently served by the macrocell and the SC _abn .

S106: The combined data of the SC device state information obtained through S104 and the MC device state information obtained through S105 is denoted as: R _f , assuming that the number of user terminal devices served by the L small cells determined in S102 is respectively M ₁ , M ₂ ... M _A , the number of user terminal devices currently served by the macrocell is M _B ;

R _f = [r _sc1 r _sc2 ... r _sci ... r _scM ],

M is the value calculated according to M ₁ , M ₂ ... M _A and M _B , for example:

M＝M ₁ +M ₂ +...+M _A +M _B ;

Select C user terminal devices closest to SC _abn from the above M user terminal devices, and the RSRP value between these C user terminal devices and SC _abn is recorded as:

in,

Calculate the likelihood ratio λ of SC _abn based on the Bayesian criterion,

is the joint probability density of the RSRP value between the user terminal equipment and the SC _abn in the case of H ₀ or H ₁ , where k=0 or 1, H ₀ indicates that the SC _abn is in a normal state, and H ₁ indicates that the SC _abn is in an abnormal state .

Whether the SC _abn is interrupted can be detected according to the λ value calculated above. Specifically, if λ is greater than a preset threshold, it is determined that the SC _abn is interrupted; otherwise, it is determined that the SC _abn is not interrupted.

Corresponding to the foregoing outage detection method for a low-power wireless access node, an embodiment of the present invention further provides an outage detection device for a low-power wireless access node.

Fig. 5 is a schematic structural diagram of an interruption detection device for a low-power wireless access node provided by an embodiment of the present invention. The device is applied to a macrocellular macrocell, and a macrocell includes a plurality of low-power wireless access node smallcells, including: node An information obtaining module 501 , an adjacent node determining module 502 , an abnormal information sending module 503 , a device state information receiving module 504 , a device state information obtaining module 505 and an interruption detection module 506 .

Wherein, the node information obtaining module 501 is used to obtain the node information of the small cell in the abnormal state marked as SC _abn ;

An adjacent node determination module 502, configured to determine a small cell adjacent to the SC _abn among the small cells included in the current macrocell according to the obtained node information and a preset node selection algorithm;

An abnormal information sending module 503, configured to send abnormal information to the determined small cell, wherein the abnormal information includes: node information of the SC _abn ;

The device state information receiving module 504 is configured to receive SC device state information sent by the determined small cell and the user terminal device served by the small cell, wherein the SC device state information carries the information of the determined small cell service Correlation information between the user terminal equipment and the SC _abn ;

The device state information obtaining module 505 is configured to obtain MC device state information of the user terminal device served by the current macrocell, wherein the MC device state information includes: the connection between the user terminal device served by the current macrocell and the SC _abn relevant information;

The interrupt detection module 506 is configured to detect whether the SC _abn is interrupted according to the correlation information carried in the SC device status information and the correlation information included in the MC device status information.

Specifically, the above-mentioned neighboring node determining module 502 may include: a node sorting submodule and a neighboring node determining submodule (not shown in the figure).

Wherein, the node sorting submodule is used to sort the small cells contained in the current macrocell in order of the distance between each small cell and the SC _abn from near to far;

The adjacent node determination submodule is configured to determine that a first preset number of small cells ranked first are small cells adjacent to the SC _abn .

Specifically, the above interruption detection module 506 may include: a dependency information sorting submodule and an interruption detection submodule (not shown in the figure).

Wherein, the correlation information sorting submodule is configured to sort the correlation information carried in the SC device status information and the correlation information included in the MC device status information according to the geographic location of the user terminal device and the SC The distance between _abns is sorted from near to far;

The interruption detection sub-module is configured to detect whether the SC _abn is interrupted according to the correlation between the second preset number of user terminal devices ranked first and the SC _abn .

Optionally, the above interrupt detection submodule may include: a likelihood ratio calculation unit, a likelihood ratio judgment unit, and an interruption judgment unit (not shown in the figure).

Wherein, the likelihood ratio calculation unit is configured to calculate the likelihood ratio of the SC _abn according to the correlation between the second preset number of user terminal devices that are ranked higher and the SC _abn , wherein the likelihood Ratio, used to represent the ratio between P _ra and P _rn , P _ra is used to represent the probability that the value of the correlation between the user terminal and the SC _abn occurs when the SC _abn is in an abnormal state, and P _rn is represented by is based on the probability that the numerical value representing the correlation between the user terminal and the SC _abn occurs when the SC _abn is in a normal state;

a likelihood ratio judging unit, configured to judge whether the likelihood ratio is greater than a preset third threshold;

The interruption determination unit is configured to determine that the SC _abn has been interrupted when the determination result of the likelihood ratio determination unit is yes.

Due to the geographical location of the user terminal equipment is different, the user terminal equipment may access the network through the current macrocell, and may also access the network through any small cell contained in the current macrocell, so the current macrocell can receive the user terminal equipment it serves The small cell can receive the information sent by the user terminal equipment it serves, and the current macrocell and the small cell can determine the small cell in an abnormal state according to the received information. The following describes how the current macrocell and small cell determine the small cell in an abnormal state through two specific embodiments.

In a specific embodiment of the present invention, the above-mentioned node information obtaining module 501 includes: a node correlation information receiving submodule, an abnormal node determining submodule and a node information obtaining submodule (not shown in the figure).

Wherein, the node correlation information receiving submodule is used to receive the node correlation information sent by the user terminal equipment, wherein, the node correlation information includes: correlation information between the user terminal equipment and each adjacent small cell ;

The abnormal node determination sub-module is used to determine that in the node correlation information, the small cell corresponding to the node correlation satisfying the following relation is a small cell in an abnormal state, denoted as: SC _abn ,

|R _c -R _d |>Th ₁

Wherein, R _c is the correlation information between the user terminal equipment included in the node correlation information and a small cell denoted as SC _a adjacent to it, and R _d is the user terminal equipment recorded in the preset database and the Correlation information between the aforementioned SC _a , Th ₁ is the preset first threshold;

The node information obtaining submodule is used to obtain the node information of the SC _abn .

In another specific embodiment of the present invention, the above-mentioned node information obtaining module 501 is specifically configured to receive the node information of the small cell in an abnormal state denoted as SC _abn sent by the small cell that provides services for the user terminal equipment;

Wherein, the small cell that provides services for the user terminal equipment obtains the node information of the SC _abn in the following manner:

The small cell that provides services for the user terminal device receives node correlation information sent by the user terminal device, wherein the node correlation information includes: correlation information between the user terminal device and its neighboring small cells;

In determining the node correlation information, the small cell corresponding to the node correlation satisfying the following relationship is a small cell in an abnormal state, which is recorded as: SC _abn ,

|R _c -R _d |>Th ₂

Wherein, R _c is the correlation information between the user terminal equipment included in the node correlation information and a small cell denoted as SC _a adjacent to it, and R _d is the user terminal equipment recorded in the preset database and the Correlation information between the above-mentioned SC _a , Th ₂ is the preset second threshold;

Obtain node information of the SC _abn .

It can be seen from the above that in the solutions provided by the above embodiments, after obtaining the node information of the small cell in an abnormal state, the small cell adjacent to the small cell is determined, and according to the determined device status information and The device status information of the user terminal device currently served by the macrocell determines whether the small cell in the abnormal state is interrupted. It can be seen that in the solutions provided by the above embodiments, only the device status of the user terminal device served by the small cell adjacent to the small cell in the abnormal state and the device status information of the user terminal device served by the current macrocell can be obtained to detect the current The small cell of the terminal occurs in the macrocell, and there is no need to obtain the device status information of the user terminal equipment served by all the small cells in the current macrocell. Therefore, the network communication overhead can be reduced. In addition, because it is not necessary for all the small cells in the current The macrocell feeds back information, so it can improve the service performance of the small cell.

As for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and for related parts, please refer to the part of the description of the method embodiment.

It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is a relationship between these entities or operations. There is no such actual relationship or order between them. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

Those of ordinary skill in the art can understand that all or part of the steps in the implementation of the above method can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium, referred to herein as Storage media, such as: ROM/RAM, disk, CD, etc.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present invention are included in the protection scope of the present invention.

Claims (6)

1. A method for detecting interruption of a low-power wireless access node is applied to a macro cell, wherein one macro cell comprises a plurality of small cells of the low-power wireless access node, and the method comprises the following steps:

is obtained as SC_abnNode information of the small cell in the abnormal state;

according to the obtained node information and a preset node selection algorithm, determining the SC in the small cell contained in the current macrocell_abnA neighboring small cell;

sending abnormal information to the determined small cell, wherein the abnormal information comprises: the SC_abnNode information of (2);

receiving SC equipment state information of user terminal equipment served by the small cell, which is sent by the determined small cell, wherein the SC equipment state information carries the user terminal equipment served by the determined small cell and the SC_abnCorrelation information between;

obtaining MC device state information of user terminal devices served by a current macro cell, wherein the MC device state information comprises: user terminal equipment of current macro cell service and SC_abnCorrelation information between;

the correlation information carried in the SC equipment state information and the correlation information included in the MC equipment state information are processed according to the geographical position of the user terminal equipment and the SC_abnThe distances between the two are sorted from near to far;

according to a second preset number of user terminal equipment and the SC which are ranked in the front_abnThe correlation between the SCs is calculated_abnWherein the likelihood ratio is used to represent P_raAnd P_rnRatio between, P_raFor representing user terminal and the SC_abnThe value of the correlation between them is at the SC_abnProbability of occurrence in abnormal state, P_rnFor representing user terminal and the SC_abnThe value of the correlation between them is at the SC_abnProbability of occurrence in a normal state;

judging whether the likelihood ratio is greater than a preset third threshold value or not;

if not, determining the SC_abnAn interrupt occurs.

2. The method of claim 1, wherein the obtaining is denoted as SC_abnThe node information of the small cell in the abnormal state comprises the following steps:

receiving node correlation information sent by user terminal equipment, wherein the node correlation information comprises: the correlation information between the user terminal equipment and each smallcell adjacent to the user terminal equipment;

determining that a small cell corresponding to the node correlation satisfying the following relational expression in the node correlation information is an abnormal small cell, and recording the abnormal small cell as: SC (Single chip computer)_abn，

|R_c-R_d|＞Th₁

Wherein R is_cMarking the user terminal equipment contained in the node correlation information and one adjacent to the user terminal equipment as SC_aR, the correlation information between small cells_dThe user terminal equipment recorded in a preset database and the SC_aCorrelation information between, Th₁Is a preset first threshold value;

obtaining the SC_abnNode information of (2).

3. The method of claim 1, wherein the obtaining is denoted as SC_abnThe node information of the small cell in the abnormal state comprises the following steps:

receiving a small cell sent by a user terminal device and recorded as SC_abnNode information of the small cell in the abnormal state;

wherein, the small cell providing service for the user terminal equipment obtains the SC by the following mode_abnNode information of (2):

receiving node correlation information sent by user terminal equipment by a small cell providing service for the user terminal equipment, wherein the node correlation information comprises: the correlation information between the user terminal equipment and each small cell adjacent to the user terminal equipment;

determining that a small cell corresponding to the node correlation satisfying the following relational expression in the node correlation information is an abnormal small cell, and recording the abnormal small cell as: SC (Single chip computer)_abn，

|R_c-R_d|＞Th₂

Wherein R is_cFor the user terminal equipment contained in the node correlation information to be adjacent to the node correlation informationOne is marked as SC_aR, the correlation information between small cells_dThe user terminal equipment recorded in a preset database and the SC_aCorrelation information between, Th₂Is a preset second threshold value;

obtaining the SC_abnNode information of (2).

4. The method according to any one of claims 1-3, wherein said determining and said SC in the smallcell contained in the current macro cell according to the obtained node information and the preset node selection algorithm_abnA neighboring smallcell comprising:

the small cells contained in the current macro cell are connected with the SC according to each small cell_abnThe distances between the two are sorted from near to far;

determining a first preset number of small cells ranked at the top as the SC_abnA neighboring small cell.

5. An apparatus for detecting interruption of a low power radio access node, which is applied to a macro cell, wherein one macro cell comprises a plurality of small cells of the low power radio access node, the apparatus comprising:

a node information obtaining module for obtaining and marking as SC_abnThe node information of the small cell in the abnormal state, wherein the SC_abnIs as follows;

a neighboring node determining module, configured to determine, according to the obtained node information and a preset node selection algorithm, a neighboring node in a small cell included in the current macro cell, where the neighboring node is associated with the SC_abnA neighboring small cell;

an abnormal information sending module, configured to send abnormal information to the determined small cell, where the abnormal information includes: the SC_abnNode information of (2);

a device state information receiving module, configured to receive SC device state information, sent by the determined small cell, of the user terminal device served by the small cell, where the SC device state information is sent by the determined small cell, where the SC device state information is sent by the user terminal device served by the small cellIn the message, the user terminal equipment carrying the determined small cell service and the SC_abnCorrelation information between;

a device status information obtaining module, configured to obtain MC device status information of a user equipment served by a current macro cell, where the MC device status information includes: user terminal equipment of current macro cell service and SC_abnCorrelation information between;

the interrupt detection module comprises a correlation information sequencing submodule and an interrupt detection submodule;

a correlation information sorting submodule, configured to sort the correlation information carried in the SC device state information and the correlation information included in the MC device state information according to the geographic location of the user terminal device and the SC_abnThe distances between the two are sorted from near to far;

the interrupt detection submodule comprises a likelihood ratio calculation unit, a likelihood ratio judgment unit and an interrupt judgment unit;

a likelihood ratio calculation unit for calculating the likelihood ratio between the SC and the user terminal devices according to a second preset number of the user terminal devices in the top ranking_abnThe correlation between the SCs is calculated_abnWherein the likelihood ratio is used to represent P_raAnd P_rnRatio between, P_raFor representing user terminal and the SC_abnThe value of the correlation between them is at the SC_abnProbability of occurrence in abnormal state, P_rnFor representing user terminal and the SC_abnThe value of the correlation between them is at the SC_abnProbability of occurrence in a normal state;

a likelihood ratio judging unit for judging whether the likelihood ratio is greater than a preset third threshold value;

an interruption determination unit configured to determine the SC if a determination result of the likelihood ratio determination unit is yes_abnAn interrupt occurs.

6. The apparatus of claim 5, wherein the neighboring node determining module comprises:

a node sorting submodule, configured to sort the small cells included in the current macro cell according to each small cell and the SC_abnThe distances between the two are sorted from near to far;

a neighboring node determination submodule, configured to determine a first preset number of small cells ranked at the top as the SC_abnA neighboring small cell.