CN113973331B - Abnormal terminal equipment detection method and device - Google Patents
Abnormal terminal equipment detection method and device Download PDFInfo
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- CN113973331B CN113973331B CN202010722210.7A CN202010722210A CN113973331B CN 113973331 B CN113973331 B CN 113973331B CN 202010722210 A CN202010722210 A CN 202010722210A CN 113973331 B CN113973331 B CN 113973331B
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Abstract
The embodiment of the invention provides a detection method and device for abnormal terminal equipment. In the method, a base station determines that a received power value of a sounding reference signal SRS of a receiving target terminal device is smaller than a preset power value before a set time, and an uplink error rate of a wireless frame reaches a set threshold value; the base station acquires the uplink error rate and the downlink error rate of the target terminal equipment within a set time, and determines that the target terminal equipment is abnormal terminal equipment according to the uplink error rate and the downlink error rate. The method preliminarily determines that the uplink communication quality of the target terminal equipment is poor by receiving the SRS power value and the uplink error rate of the target terminal equipment, and then further integrates the uplink and downlink transmission quality to determine the abnormal target terminal equipment, thereby improving the accuracy of detecting the abnormal terminal equipment.
Description
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to a method and an apparatus for detecting an abnormal terminal device.
Background
In a communication system, after a radio resource control (Radio Resource Control, RRC) connection is established between a base station and a terminal device (UE) in the communication system, the base station allocates radio resources to the UE, so that the UE can perform data transmission based on the allocated radio resources, thereby implementing a service of the terminal device.
However, among the plurality of UEs allocated with radio resources by the base station, there may be some UEs blocked or failed, resulting in abnormal data transmission links of the UEs, which cannot perform normal uplink and downlink data transmission. In this case, however, the base station may still retain access stratum context information (AS context) of UEs with abnormal links, which may occupy additional resources of the base station. When the number of the abnormal UEs reaches a certain number, idle resources allocated by the base station to other UEs are reduced, and normal communication of other UEs is affected.
In the existing abnormal UE detection mechanism, a base station may detect an error of uplink data of a UE by using a cyclic redundancy check (Cyclic Redundancy Check, CRC) method, so as to determine whether a transmission link of the UE is abnormal. As shown in fig. 1, if a medium access control layer (Media Access Control, MAC) of a base station L2 layer receives an uplink data CRC check result indicating the CRC Error, the base station determines that a transmission link of the UE is abnormal, and determines that the number of uplink CRC errors is increased by 1 (CRC Error num+1); if the media access control layer (Media Access Control, MAC) of the base station L2 layer receives the CRC check result to indicate that the CRC is correct, the base station determines that the transmission link of the UE is normal, and determines that the number of uplink CRC correct is increased by 1 (CRC Ok num+1). When the base station determines that the uplink CRC error frequency of the UE exceeds a preset UE release threshold (default 4000), requesting to release the user from a High Layer (HL), and reporting that the reason is user loss (namely UE_LOST); and when the base station determines that the correct number of the uplink CRC of the UE exceeds a preset release UE threshold (default 2), zeroing the incorrect number of the uplink CRC of the UE.
In actual detection, the base station receives uplink data sent by the UE through the antenna module, and determines whether the UE link is abnormal according to the uplink CRC check result of the uplink data. However, the antenna module of the base station has low sensitivity to uplink data verification, which easily causes continuous error of uplink CRC, and the UE cannot access the base station for normal communication; in addition, when the channel quality of the transmission data changes greatly, the uplink CRC is always wrong continuously and the channel quality is hard to recover, and the influence lasts for a threshold of tens of seconds. Therefore, the result of the link ultimately leading to the base station detecting the abnormal UE is not accurate.
Disclosure of Invention
The application provides a detection method of abnormal terminal equipment, which is used for accurately detecting the abnormal terminal equipment so as to release resources of the abnormal terminal equipment, thereby avoiding resource waste of a base station.
The specific technical scheme provided by the embodiment of the invention is as follows:
in a first aspect, an embodiment of the present application provides a method for detecting an abnormal terminal device, where the method specifically includes the following steps:
the base station acquires the uplink error rate and the downlink error rate of target terminal equipment within a set time;
and the base station determines that the target terminal equipment is abnormal terminal equipment according to the uplink error rate and the downlink error rate.
In a possible implementation manner, before the base station obtains the uplink error rate and the downlink error rate of the target terminal device in the set time, the method further includes:
the base station determines that the received power value of the SRS of the target terminal equipment is smaller than a preset power value, and the uplink error rate of the wireless frame reaches a set threshold value.
In a possible implementation manner, the base station obtains the uplink error rate, including:
the base station continuously receives a plurality of uplink data sent by the target terminal equipment within the set time; the base station determines the uplink error rate according to the number of first uplink data successfully received in the plurality of uplink data or the number of second uplink data failed to be received in the plurality of uplink data; or alternatively
And the base station receives the uplink error rate sent by the target terminal equipment.
In a possible implementation manner, the base station obtains the downlink error rate, including:
the base station continuously receives a plurality of downlink data feedback responses sent by the target terminal equipment within the set time, wherein any downlink data feedback response is a successful Acknowledgement (ACK) response or a failed acknowledgement (NACK) response;
the base station determines a first downlink error rate according to the number of ACK responses or the number of NACK responses in the plurality of downlink data feedback responses;
and the base station corrects the first downlink error rate according to the translation error rate and/or the omission factor of the feedback response of the base station to the downlink data, so as to obtain the downlink error rate.
In one possible implementation, the downlink error rate satisfies the following formula:
Bler DL_Mod ＝Bler DL *(1-B A -L A )+(1-Bler DL )*B N ；
wherein Bler DL Representing the first downlink error rate, B A Representing the error rate of the base station to ACK response, B N Representing the error rate, L, of the base station's response to NACK A And the omission ratio of the feedback response of the base station to the downlink data is represented.
In a possible implementation manner, the determining, by the base station, that the target terminal device is an abnormal terminal device according to the uplink error rate and the downlink error rate includes:
the base station calculates an average error rate according to the uplink error rate and the downlink error rate;
and when the base station determines that the average error rate is larger than a preset average error rate threshold, determining that the target terminal equipment is abnormal terminal equipment.
In a possible implementation manner, the set time is an integer multiple of the SRS transmission period of the target terminal device.
In a second aspect, an embodiment of the present application provides a method for detecting an abnormal terminal device, where the method specifically includes the following steps:
the acquisition unit is used for acquiring the uplink error rate and the downlink error rate of the target terminal equipment within the set time;
and the processing unit is used for determining that the target terminal equipment is abnormal terminal equipment according to the uplink error rate and the downlink error rate.
In a possible embodiment, the processing unit is further configured to:
before the acquisition unit acquires the uplink error rate and the downlink error rate of the target terminal equipment within a set time, it is determined that the received power value of the SRS for receiving the target terminal equipment is smaller than a preset power value, and the uplink error rate of the wireless frame reaches a set threshold value.
In a possible implementation manner, the acquiring unit is specifically configured to, when acquiring the uplink error rate:
continuously receiving a plurality of uplink data sent by the target terminal equipment within the set time; determining, by the processing unit, the uplink error rate according to the number of first uplink data that are successfully received in the plurality of uplink data or the number of second uplink data that are failed to be received in the plurality of uplink data; or alternatively
And receiving the uplink error rate sent by the target terminal equipment.
In a possible implementation manner, the acquiring unit is specifically configured to, when acquiring the downlink error rate:
continuously receiving a plurality of downlink data feedback responses sent by the target terminal equipment within the set time, wherein any downlink data feedback response is a successful Acknowledgement (ACK) response or a failed acknowledgement (NACK) response;
determining, by the processing unit, a first downlink error rate according to the number of ACK responses or the number of NACK responses in the plurality of downlink data feedback responses;
and correcting the first downlink error rate by the processing unit according to the translation error rate and/or the omission factor of the feedback response of the base station to the downlink data, so as to obtain the downlink error rate.
In one possible implementation, the downlink error rate satisfies the following formula:
Bler DL_Mod ＝Bler DL *(1-B A -L A )+(1-Bler DL )*B N ；
wherein Bler DL Representing the first downlink error rate, B A Representing the error rate of the base station to ACK response, B N Representing the error rate, L, of the base station's response to NACK A And the omission ratio of the feedback response of the base station to the downlink data is represented.
In a possible implementation manner, the processing unit is specifically configured to, when determining that the target terminal device is an abnormal terminal device according to the uplink error rate and the downlink error rate:
calculating an average error rate according to the uplink error rate and the downlink error rate;
and when the average error rate is determined to be larger than a preset average error rate threshold value, determining that the target terminal equipment is abnormal terminal equipment.
In a possible implementation manner, the set time is an integer multiple of the SRS transmission period of the target terminal device.
In a third aspect, an embodiment of the present application provides a base station, including: a processor, a memory, a transceiver; the transceiver is used for receiving and transmitting data under the control of the processor; the memory stores computer instructions; the processor being configured to read the computer instructions and perform the method according to any of the first aspects.
In a fourth aspect, embodiments of the present application provide a computer-readable storage medium storing computer-executable instructions for causing a computer to perform the method according to any one of the first aspects.
In the technical scheme of the embodiment of the application, the base station determines that the received power value of the SRS of the target terminal equipment is smaller than a preset power value before the set time, and the uplink error rate of the wireless frame reaches a set threshold value; then, the base station acquires the uplink error rate and the downlink error rate of the target terminal equipment within a set time, and determines that the target terminal equipment is abnormal terminal equipment according to the uplink error rate and the downlink error rate. The method preliminarily determines that the uplink communication quality of the target terminal equipment is poor by receiving the SRS power value and the uplink error rate of the target terminal equipment, and then further integrates the uplink and downlink transmission quality to determine the abnormal target terminal equipment, thereby improving the accuracy of detecting the abnormal terminal equipment.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it will be apparent that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a CRC check method for detecting an abnormal terminal provided in the prior art;
fig. 2 is a schematic structural diagram of a communication system according to an embodiment of the present invention;
fig. 3 is a schematic flow chart of a method for detecting an abnormal terminal device according to an embodiment of the present invention;
fig. 4 is a flowchart of an example of a method for detecting an abnormal terminal device according to an embodiment of the present invention;
fig. 5 is a schematic diagram of an apparatus of a base station according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a base station according to an embodiment of the present invention.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the present application more apparent, the present application will be described in further detail below with reference to the accompanying drawings, wherein it is apparent that the described embodiments 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 a detection method of abnormal terminal equipment, which is used for accurately detecting the abnormal terminal equipment so as to release resources of the abnormal terminal equipment.
The method and the device described in the present application are based on the same inventive concept, and because the principles of solving the problems by the method and the device are similar, the implementation of the device and the method can be referred to each other, and the repetition is not repeated.
In the technical scheme of the embodiment of the application, the base station determines that the received power value of the SRS of the target terminal equipment is smaller than a preset power value before the set time, and the uplink error rate of the wireless frame reaches a set threshold value; then, the base station acquires the uplink error rate and the downlink error rate of the target terminal equipment within a set time, and determines that the target terminal equipment is abnormal terminal equipment according to the uplink error rate and the downlink error rate. The method preliminarily determines that the uplink communication quality of the target terminal equipment is poor by receiving the SRS power value and the uplink error rate of the target terminal equipment, and then further integrates the uplink and downlink transmission quality to determine the abnormal target terminal equipment, thereby improving the accuracy of detecting the abnormal terminal equipment.
Some of the terms in the embodiments of the present application are explained below to facilitate understanding by those skilled in the art.
1. A Base Station (BS), which may also be referred to as a network device, is a device deployed in a radio access network to provide wireless communication functionality.
Currently, some examples of base stations are: a gNB, NR base station, evolved Node B (eNB), transmission reception point (transmission reception point, TRP), radio network controller (radio network controller, RNC), node B (Node B, NB), base station controller (base station controller, BSC), base transceiver station (base transceiver station, BTS), home base station (e.g., home evolved NodeB, or home Node B, HNB), or baseband unit (BBU), etc.
In addition, in one network structure, the base station may include a Centralized Unit (CU) node and a Distributed Unit (DU) node. The structure splits the protocol layer of the eNB in a long term evolution (long term evolution, LTE) system, the functions of part of the protocol layer are controlled in a CU (central control unit), and the functions of the rest part or all of the protocol layer are distributed in DUs, so that the CU controls the DUs in a centralized manner.
In this application, the base station includes, but is not limited to, fifth generation (The 5th Generation,5G), time Division long term evolution (Time Division Long Term Evolution, TD-LTE), time Division synchronous code Division multiple access (Time Division-Synchronous Code Division Multiple Access, TD-SCDMA), wideband code Division multiple access (Wideband Code Division Multiple Access, WCDMA).
2. A terminal device is a device that provides voice and/or data connectivity to a user. The terminal device may also be referred to as a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), etc.
For example, the terminal device may be a handheld device, an in-vehicle device, or the like having a wireless connection function. Currently, examples of some terminal devices are: a mobile phone, a tablet, a notebook, a palm, a mobile internet device (mobile internet device, MID), a wearable device, a Virtual Reality (VR) device, an augmented reality (augmented reality, AR) device, a wireless terminal in industrial control (industrial control), a wireless terminal in unmanned (self driving), a wireless terminal in teleoperation (remote medical surgery), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation security (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), and the like.
3. In the description of this application, the words "first," "second," and the like are used solely for the purpose of distinguishing between descriptions and not necessarily for the purpose of indicating or implying a relative importance or order.
4. And/or, the association relationship describing the association object, the representation may have three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.
Embodiments of the present application are described below with reference to the accompanying drawings.
Fig. 2 shows a possible communication system to which the detection method of an abnormal terminal device provided in the present application is applicable. As shown, the communication system includes a base station 201, a plurality of terminal apparatuses 202 (terminal apparatus 2021, terminal apparatus 2022 … terminal apparatus 202N), and a core network apparatus 203.
The plurality of terminal devices 202 access a wireless network through the base station 201, and communication between the plurality of terminal devices 202 and a data network is realized through the core network device 203. In this communication system, information interaction between the base station 201 and the core network device 203 and between the plurality of terminal devices 202 may be performed.
The interface between the base station 201 and the plurality of terminal devices 202 is called Uu interface, also called air interface, and the base station 201 and the plurality of terminal devices 202 communicate through the air interface respectively. The interface between the base station 201 and the core network device 203 is referred to as an S1 interface, and the base station 201 and the core network device 203 communicate through the S1 interface.
Any one of the terminal devices 202 accesses the base station 201 by establishing an RRC connection with the base station 201, and the base station 201 will store the context information of the access layer of the terminal device 202. And, after each terminal device 202 accesses the base station 201, the base station 201 allocates a corresponding resource to each terminal device 202, so that the plurality of terminal devices 202 transmit data through the allocated resource.
Among the plurality of terminal apparatuses 202 of which the base station 201 allocates resources, there may be abnormal terminal apparatuses, some of which have been accessed but which cannot normally perform uplink and downlink data transmission due to link abnormality for a long period of time. When a certain number of such abnormal terminal devices is reached, the idle resources allocated by the base station 201 to other normal terminal devices with service requirements are reduced, so that normal communication of the normal terminal devices cannot be guaranteed. Therefore, the base station 201 needs to detect the plurality of terminal devices 202, detect an abnormal terminal device, request to release the abnormal terminal device from a higher layer of the base station, and empty the resources occupied by the corresponding abnormal terminal device.
It should be noted that The communication system shown in fig. 2 may be applied to various communication scenarios, for example, a fifth generation (The 5th Generation,5G) communication system, a sixth generation communication system in The future and other communication systems that evolve, a long term evolution (long term evolution, LTE) communication system, a 4.5G communication system, an internet of vehicles, a machine type communication (machine type communications, MTC), an internet of things (internet of things, ioT) and so on.
The embodiment of the present application provides a method for detecting an abnormal terminal device, which may be applied to a communication system as shown in fig. 2, and the flow of the method for detecting an abnormal terminal device provided in the embodiment of the present application is described in detail below with reference to fig. 3.
S301: the base station acquires the uplink error rate and the downlink error rate of the target terminal equipment within the set time.
In one embodiment, before the base station obtains the uplink error rate and the downlink error rate of the target terminal device in the set time, the method further includes:
the base station determines that the received power value of the SRS of the target terminal equipment is smaller than a preset power value, and the uplink error rate of the wireless frame reaches a set threshold value.
According to the above, before the set time, the base station determines that the received power value of the SRS received by the target terminal device is smaller than the preset power value, so as to primarily determine that the target terminal device is located at a position far from the base station. Due to the unstable module for detecting the SRS receiving power, after detecting the SRS of the target terminal equipment, the uplink error rate of the wireless frame (namely whether the CRC check result is consistent or not) is determined by combining with CRC detection; if the uplink error rate reaches a set threshold (for example, 70%), the uplink communication link of the target terminal device is estimated to be poor, or the target terminal device may be covered by a building or malfunction occurs. So that the set time can be timed by starting a release timer (T _ LOST).
In one embodiment, the base station obtains the uplink error rate, including:
the base station continuously receives a plurality of uplink data sent by the target terminal equipment within the set time; the base station determines the uplink error rate according to the number of first uplink data successfully received in the plurality of uplink data or the number of second uplink data failed to be received in the plurality of uplink data; or the base station receives the uplink error rate sent by the target terminal equipment.
In one embodiment, the base station obtains the downlink error rate, including:
the base station continuously receives a plurality of downlink data feedback responses sent by the target terminal equipment within the set time, wherein any downlink data feedback response is a successful Acknowledgement (ACK) response or a failed acknowledgement (NACK) response;
the base station determines a first downlink error rate according to the number of ACK responses or the number of NACK responses in the plurality of downlink data feedback responses;
and the base station corrects the first downlink error rate according to the translation error rate and/or the omission factor of the feedback response of the base station to the downlink data, so as to obtain the downlink error rate.
The base station corrects the first downlink error rate according to the interpretation error rate and/or the omission factor of the feedback response of the base station to the downlink data, so as to obtain the downlink error rate, and specifically comprises the following steps:
the first step: let the probability of translating the ACK response into a NACK response be B A The probability of translating the NACK response into an ACK response is B N The miss rates of the ACK response and the NACK response are respectively L A And L N 。
The foregoing error rate and omission ratio may be achieved with reference to long term evolution (Long Term Evolution, LTE) algorithm, setting B A ＝B N ＝0.1％，L A ＝L N ＝1％；
And a second step of: after the base station fails to detect the ACK response in the downlink data feedback response, the ACK response of all the failed detection time slots is assumed to be NACK response.
And a third step of: the corrected downlink error rate satisfies the following formula:
Bler DL_Mod ＝Bler DL *(1-B A -L A )+(1-Bler DL )*B N ；
wherein Bler DL Representing the first downlink error rate, B A Representing the error rate of the base station to ACK response, B N Representing the error rate, L, of the base station's response to NACK A And the omission ratio of the feedback response of the base station to the downlink data is represented.
S302: and the base station determines that the target terminal equipment is abnormal terminal equipment according to the uplink error rate and the downlink error rate.
In one embodiment, the determining, by the base station, that the target terminal device is an abnormal terminal device according to the uplink error rate and the downlink error rate includes:
the base station calculates an average error rate according to the uplink error rate and the downlink error rate;
and when the base station determines that the average error rate is larger than a preset average error rate threshold (namely thre_bler), determining that the target terminal equipment is abnormal terminal equipment.
For example, when the base station determines that the average error rate is greater than 70%, the target terminal device is determined to be an abnormal terminal device.
Optionally, after determining that the target terminal device is an abnormal terminal device, the base station applies for releasing the terminal device to a higher layer HL of the base station, because UE is LOST (ue_lost), and releases resources occupied by the abnormal terminal device.
Optionally, the set time is an integer multiple of an SRS transmission period of the target terminal device.
In summary, the embodiment of the present application provides a method for detecting an abnormal terminal device, where a base station determines that a received power value of a sounding reference signal SRS of a receiving target terminal device is smaller than a preset power value before a set time, and determines that uplink communication quality of the target terminal device is poor preliminarily after an uplink error rate of a radio frame reaches a set threshold; then, the base station acquires the uplink error rate and the downlink error rate of the target terminal equipment within a set time, and corrects the downlink error rate after the set time; and finally, the base station calculates an average error rate according to the uplink error rate and the corrected downlink error rate, namely, comprehensively considers uplink and downlink data transmission quality, and determines that the target terminal equipment is abnormal terminal equipment. Therefore, the method has higher accuracy of detecting the abnormal terminal equipment.
Based on the embodiment shown in fig. 3, the present application further provides an example of a method for detecting an abnormal terminal device, where a specific flow of steps in the embodiment in this example is shown in fig. 4:
s401: the base station receives a channel sounding reference signal (Sounding Reference Signal, SRS) transmitted by a target terminal equipment (UE), and calculates an SRS reception power value.
S402: and judging whether the SRS receiving Power value is smaller than a preset Power value (Power_SRS_Thre).
S403: and when the SRS receiving power value is smaller than the preset power value, counting the uplink block error rate (Bler) of the next wireless frame. And determining the uplink error rate according to the uplink block error rate.
And when the SRS receiving power value is not less than the preset power value, returning to S401.
S404: and judging whether the uplink error rate reaches a set threshold value.
S405: and when the uplink error rate reaches the set threshold, starting a release timer T_Lost of the detection UE.
And when the uplink error rate reaches the set threshold and does not reach the set threshold, returning to S401.
S406: after starting the release timer, the base station acquires an uplink bit error rate (Bler UL ) Downstream error rate (Bler) DL )。
S407: the base station judges whether the release timer is overtime.
Optionally, if the time-out is not over, continuously updating the uplink error rate and the downlink error rate.
S408: after the base station determines that the release timer is overtime, the base station calculates and corrects the downlink error rate (Bler DL _Mod)。
Optionally, the corrected downlink error rate satisfies the following formula:
Bler DL_Mod ＝Bler DL *(1-B A -L A )+(1-Bler DL )*B N ；
wherein Bler DL Representing the first downlink error rate, B A Representing the error rate of the base station to ACK response, B N Representing the error rate, L, of the base station's response to NACK A And the omission ratio of the feedback response of the base station to the downlink data is represented.
S409: and the base station calculates an average error rate according to the uplink error rate and the corrected downlink error rate, and judges whether the average error rate is larger than a set error rate threshold value. I.e. determination (Bler) UL +Bler DL_Mod )/2>A bit error rate threshold (Thre _ bler) is set.
S410: when the base station determines that the average bit error rate is greater than a set bit error rate threshold, the MAC layer of the base station L2 applies for releasing the UE from the higher layer HL because of UE loss (ue_lost).
After the MAC layer of the base station L2 applies for releasing the UE to the higher layer HL, the resources occupied by the terminal equipment are released.
In summary, the embodiment of the present application provides a method for detecting an abnormal terminal device, where before a set time, a base station determines that a received power value of a sounding reference signal SRS of a receiving target terminal device is smaller than a preset power value, and an uplink error rate of a radio frame reaches a set threshold; then, the base station acquires the uplink error rate and the downlink error rate of the target terminal equipment within a set time, and determines that the target terminal equipment is abnormal terminal equipment according to the uplink error rate and the downlink error rate. The method preliminarily determines that the uplink communication quality of the target terminal equipment is poor through receiving the power value and the uplink error rate of the SRS of the target terminal equipment, and then further integrates the uplink and downlink transmission quality to determine the abnormal target terminal equipment, thereby improving the accuracy of detecting the abnormal terminal equipment.
Based on the same technical concept, the embodiment of the application also provides a base station, and the structure of the base station is shown in fig. 5. The base station 500 includes: an acquisition unit 501, a processing unit 502, and a communication unit 503. The base station 500 may be applied to the communication system shown in fig. 2, and may implement the above method for detecting an abnormal terminal device shown in fig. 3. The functions of the respective units in the base station 500 are described below.
An obtaining unit 501, configured to obtain an uplink error rate and a downlink error rate of a target terminal device in a set time;
and the processing unit 502 is configured to determine that the target terminal device is an abnormal terminal device according to the uplink error rate and the downlink error rate.
In one embodiment, it is further used to:
the acquiring unit 501 determines that the received power value of the SRS received by the target terminal device is smaller than a preset power value before the uplink error rate and the downlink error rate of the target terminal device in the set time are acquired, and the uplink error rate of the radio frame reaches a set threshold value.
In one embodiment, the obtaining unit 501 is specifically configured to, when obtaining the uplink error rate:
continuously receiving a plurality of uplink data sent by the target terminal equipment within the set time; determining, by the processing unit 502, the uplink error rate according to the number of first uplink data that is successfully received in the plurality of uplink data or the number of second uplink data that is failed to be received in the plurality of uplink data; or alternatively
And receiving the uplink error rate sent by the target terminal equipment.
In one embodiment, the acquiring unit 501 is specifically configured to, when acquiring the downlink error rate:
continuously receiving a plurality of downlink data feedback responses sent by the target terminal equipment within the set time, wherein any downlink data feedback response is a successful Acknowledgement (ACK) response or a failed acknowledgement (NACK) response;
determining, by the processing unit 502, a first downlink error rate according to the number of ACK responses or the number of NACK responses in the plurality of downlink data feedback responses;
and correcting the first downlink error rate by the processing unit 502 according to the translation error rate and/or the omission factor of the feedback response of the base station to the downlink data, so as to obtain the downlink error rate.
In one embodiment, the downlink error rate satisfies the following formula:
Bler DL_Mod ＝Bler DL *(1-B A -L A )+(1-Bler DL )*B N ；
wherein Bler DL Representing the first downlink error rate, B A Representing the error rate of the base station to ACK response, B N Representing the error rate, L, of the base station's response to NACK A And the omission ratio of the feedback response of the base station to the downlink data is represented.
In one embodiment, the processing unit 502 is specifically configured to, when determining that the target terminal device is an abnormal terminal device according to the uplink error rate and the downlink error rate:
calculating an average error rate according to the uplink error rate and the downlink error rate;
and when the average error rate is determined to be larger than a preset average error rate threshold value, determining that the target terminal equipment is abnormal terminal equipment.
In one embodiment, the set time is an integer multiple of an SRS transmission period of the target terminal device.
Based on the same technical concept, the embodiment of the application also provides a base station, which can be applied to the mobile communication system shown in fig. 2 and can realize the detection method of the abnormal terminal equipment shown in fig. 3. Referring to fig. 6, the base station 600 includes: a transceiver 601, a processor 602, a memory 603. Wherein the transceiver 601, the processor 602 and the memory 603 are interconnected.
Optionally, the transceiver 601, the processor 602, and the memory 603 are connected to each other through a bus 604. The bus 604 may be a peripheral component interconnect standard (peripheral component interconnect, PCI) bus or an extended industry standard architecture (extended industry standard architecture, EISA) bus, among others. The buses may be classified as address buses, data buses, control buses, etc.
A transceiver 601, configured to obtain an uplink error rate and a downlink error rate of a target terminal device within a set time;
and a processor 602, configured to determine that the target terminal device is an abnormal terminal device according to the uplink error rate and the downlink error rate.
In one embodiment, it is further used to:
before the transceiver 601 obtains the uplink error rate and the downlink error rate of the target terminal device within the set time, it is determined that the received power value of the SRS for receiving the target terminal device is smaller than the preset power value, and the uplink error rate of the radio frame reaches the set threshold.
In one embodiment, the transceiver 601 is specifically configured to, when acquiring the uplink error rate:
continuously receiving a plurality of uplink data sent by the target terminal equipment within the set time; determining, by the processor 602, the uplink error rate according to the number of first uplink data that are successfully received in the plurality of uplink data or the number of second uplink data that are failed to be received in the plurality of uplink data; or alternatively
And receiving the uplink error rate sent by the target terminal equipment.
In one embodiment, the transceiver 601 is specifically configured to, when acquiring the downlink error rate:
continuously receiving a plurality of downlink data feedback responses sent by the target terminal equipment within the set time, wherein any downlink data feedback response is a successful Acknowledgement (ACK) response or a failed acknowledgement (NACK) response;
determining, by the processor 602, a first downlink error rate according to the number of ACK responses or the number of NACK responses in the plurality of downlink data feedback responses;
and correcting the first downlink error rate by the processor 602 according to the translation error rate and/or the omission factor of the feedback response of the base station to the downlink data, so as to obtain the downlink error rate.
In one embodiment, the downlink error rate satisfies the following formula:
Bler DL_Mod ＝Bler DL *(1-B A -L A )+(1-Bler DL )*B N ；
wherein Bler DL Representing the first downlink error rate, B A Representing the error rate of the base station to ACK response, B N Representing the error rate, L, of the base station's response to NACK A And the omission ratio of the feedback response of the base station to the downlink data is represented.
In one embodiment, the processor 602 is specifically configured to, when determining that the target terminal device is an abnormal terminal device according to the uplink error rate and the downlink error rate:
calculating an average error rate according to the uplink error rate and the downlink error rate;
and when the average error rate is determined to be larger than a preset average error rate threshold value, determining that the target terminal equipment is abnormal terminal equipment.
In one embodiment, the set time is an integer multiple of an SRS transmission period of the target terminal device.
Based on the foregoing embodiments, the embodiments of the present application further provide a computer-readable storage medium, where the computer-readable storage medium stores computer-executable instructions for causing a computer to execute a method for detecting an abnormal terminal device provided by the embodiments shown in fig. 3 to 4.
In summary, in the technical solution of the embodiment of the present application, before the set time, the base station determines that the received power value of the SRS of the target terminal device is smaller than the preset power value, and the uplink error rate of the radio frame reaches the set threshold; then, the base station acquires the uplink error rate and the downlink error rate of the target terminal equipment within a set time, and determines that the target terminal equipment is abnormal terminal equipment according to the uplink error rate and the downlink error rate. The method preliminarily determines that the uplink communication quality of the target terminal equipment is poor by receiving the SRS power value and the uplink error rate of the target terminal equipment, and then further integrates the uplink and downlink transmission quality to determine the abnormal target terminal equipment, thereby improving the accuracy of detecting the abnormal terminal equipment.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.
Claims (12)
1. A method for detecting an abnormal terminal device, comprising:
the base station acquires the uplink error rate and the downlink error rate of target terminal equipment within a set time; before the base station obtains the uplink error rate and the downlink error rate of the target terminal equipment within the set time, the method further comprises the following steps: the base station determines that the received power value of the SRS of the target terminal equipment is smaller than a preset power value, and the uplink error rate of the wireless frame reaches a set threshold value;
the base station determines that the target terminal equipment is abnormal terminal equipment according to the uplink error rate and the downlink error rate; the base station determines that the target terminal device is an abnormal terminal device according to the uplink error rate and the downlink error rate, and includes: the base station calculates an average error rate according to the uplink error rate and the downlink error rate; and when the base station determines that the average error rate is larger than a preset average error rate threshold, determining that the target terminal equipment is abnormal terminal equipment.
2. The method of claim 1, wherein the base station obtaining the uplink error rate comprises:
the base station continuously receives a plurality of uplink data sent by the target terminal equipment within the set time; the base station determines the uplink error rate according to the number of first uplink data successfully received in the plurality of uplink data or the number of second uplink data failed to be received in the plurality of uplink data; or alternatively
And the base station receives the uplink error rate sent by the target terminal equipment.
3. The method of claim 1, wherein the base station obtaining the downlink error rate comprises:
the base station continuously receives a plurality of downlink data feedback responses sent by the target terminal equipment within the set time, wherein any downlink data feedback response is a successful Acknowledgement (ACK) response or a failed acknowledgement (NACK) response;
the base station determines a first downlink error rate according to the number of ACK responses or the number of NACK responses in the plurality of downlink data feedback responses;
and the base station corrects the first downlink error rate according to the translation error rate and/or the omission factor of the feedback response of the base station to the downlink data, so as to obtain the downlink error rate.
4. The method of claim 3, wherein the downstream error rate satisfies the following equation:
Bler DL_Mod ＝Bler DL *(1-B A -L A )+(1-Bler DL )*B N ；
wherein Bl erDL_Mod Representing the downlink error rate obtained after the first downlink error rate is modified, bler DL Representing the first downlink error rate, B A Representing the error rate of the base station to ACK response, B N Representing the error rate, L, of the base station's response to NACK A And the omission ratio of the feedback response of the base station to the downlink data is represented.
5. The method according to any of claims 1-4, wherein the set time is an integer multiple of an SRS transmission period of the target terminal device.
6. A base station, comprising:
the acquisition unit is used for acquiring the uplink error rate and the downlink error rate of the target terminal equipment within the set time;
the processing unit is used for determining that the received power value of the SRS of the target terminal equipment is smaller than a preset power value and the uplink error rate of the wireless frame reaches a set threshold before the acquisition unit acquires the uplink error rate and the downlink error rate of the target terminal equipment within a set time;
the processing unit is further configured to determine that the target terminal device is an abnormal terminal device according to the uplink error rate and the downlink error rate; the processing unit is specifically configured to, when determining that the target terminal device is an abnormal terminal device according to the uplink error rate and the downlink error rate: calculating an average error rate according to the uplink error rate and the downlink error rate; and when the average error rate is determined to be larger than a preset average error rate threshold value, determining that the target terminal equipment is abnormal terminal equipment.
7. The base station of claim 6, wherein the acquiring unit, when acquiring the uplink error rate, is specifically configured to:
continuously receiving a plurality of uplink data sent by the target terminal equipment within the set time; determining, by the processing unit, the uplink error rate according to the number of first uplink data that are successfully received in the plurality of uplink data or the number of second uplink data that are failed to be received in the plurality of uplink data; or alternatively
And receiving the uplink error rate sent by the target terminal equipment.
8. The base station of claim 6, wherein the acquiring unit, when acquiring the downlink error rate, is specifically configured to:
continuously receiving a plurality of downlink data feedback responses sent by the target terminal equipment within the set time, wherein any downlink data feedback response is a successful Acknowledgement (ACK) response or a failed acknowledgement (NACK) response;
determining, by the processing unit, a first downlink error rate according to the number of ACK responses or the number of NACK responses in the plurality of downlink data feedback responses;
and correcting the first downlink error rate by the processing unit according to the translation error rate and/or the omission factor of the feedback response of the base station to the downlink data, so as to obtain the downlink error rate.
9. The base station of claim 8, wherein the downlink error rate satisfies the following equation:
Bler DL_Mod ＝Bler DL *(1-B A -L A )+(1-Bler DL )*B N ；
wherein, the liquid crystal display device comprises a liquid crystal display device,representing the downlink error rate obtained after the first downlink error rate is modified, bler DL Representing the first downlink error rate, B A Representing the error rate of the base station to ACK response, B N Representing the error rate, L, of the base station's response to NACK A And the omission ratio of the feedback response of the base station to the downlink data is represented.
10. The base station according to any of claims 6-9, wherein the set time is an integer multiple of the SRS transmission period of the target terminal device.
11. A base station, comprising: a processor, a memory, a transceiver;
the transceiver is used for receiving and transmitting data under the control of the processor;
the memory stores computer instructions;
the processor configured to read the computer instructions and perform the method of any one of claims 1-5.
12. A computer readable storage medium storing computer executable instructions for causing a computer to perform the method of any one of claims 1-5.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012059035A1 (en) * | 2010-11-01 | 2012-05-10 | 华为技术有限公司 | Method, device and system for frequency offset detection of terminal |
| CN103458453A (en) * | 2012-05-30 | 2013-12-18 | 中国移动通信集团黑龙江有限公司 | Network analyzing method, network analyzing device and network analyzing system |
| CN108989120A (en) * | 2018-08-01 | 2018-12-11 | 中国联合网络通信集团有限公司 | A kind of data transmission method and device |
-
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- 2020-07-24 CN CN202010722210.7A patent/CN113973331B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012059035A1 (en) * | 2010-11-01 | 2012-05-10 | 华为技术有限公司 | Method, device and system for frequency offset detection of terminal |
| CN103458453A (en) * | 2012-05-30 | 2013-12-18 | 中国移动通信集团黑龙江有限公司 | Network analyzing method, network analyzing device and network analyzing system |
| CN108989120A (en) * | 2018-08-01 | 2018-12-11 | 中国联合网络通信集团有限公司 | A kind of data transmission method and device |
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