CN114126027B

CN114126027B - Method, device and related equipment for acquiring accumulated deviation

Info

Publication number: CN114126027B
Application number: CN202010870814.6A
Authority: CN
Inventors: 韩小江; 刘小青; 郑小金; 尹照根; 叶树彬
Original assignee: Shanghai Huawei Technologies Co Ltd
Current assignee: Shanghai Huawei Technologies Co Ltd
Priority date: 2020-08-26
Filing date: 2020-08-26
Publication date: 2024-04-09
Anticipated expiration: 2040-08-26
Also published as: CN114126027A

Abstract

The embodiment of the application discloses a method for acquiring accumulated deviation, which can be applied to the field of communication. The method comprises the following steps: the second access network equipment receives M first accumulated deviations from M first access network equipment, the M first accumulated deviations are in one-to-one correspondence with the M first access network equipment, and the M first accumulated deviations are corresponding to N reference access network equipment; and the second access network equipment acquires the target accumulated deviation according to the M first accumulated deviations. The second access network device may receive the plurality of accumulated deviations, and determine a target accumulated deviation from the plurality of accumulated deviations. The accuracy of the target accumulated deviation used by the second access network device can be improved.

Description

Method, device and related equipment for acquiring accumulated deviation

Technical Field

The present disclosure relates to the field of communications, and in particular, to a method, an apparatus, and a related device for acquiring accumulated deviation.

Background

In order to realize time division multiplexing of transmission resources, the mobile communication network requires that each network element keeps transmission synchronization, so each network element has strict requirements on the accuracy of a clock signal. Currently, a base station generally obtains a time offset through two methods.

Method one, the base station obtains time offset from satellites by synchronizing satellite cards, such as global positioning system (global positioning system, GPS) satellite cards. Or the base station obtains the time deviation through a clock server supporting the precision clock synchronization standard version2 (the institute of electrical and electronics engineers 1588version2, ieee1588v 2) protocol of the network measurement and control system.

And in the second method, the two base stations acquire the time deviation of the two base stations through the centralized management equipment. One of the two base stations is a reference base station, the other base station is a synchronous base station 1, and the reference base station generally refers to a base station carrying a GPS star card or supporting an IEEE1588V2 protocol. By this centralized management apparatus, the synchronous base station 1 can acquire a time deviation from the reference base station. After the synchronization base station 1 acquires the time deviation, the clock of the synchronization base station 1 is modified so that the time of the synchronization base station 1 is synchronized with the time of the reference base station. After that, the synchronous base station 1 serves as a reference base station of the synchronous base station 2, and the synchronous base station 2 can acquire the time deviation of the synchronous base station 1. And so on until sync base station X-1 serves as the reference base station for sync base station X.

For the first method, if each base station carries a GPS star card or supports IEEE1588V2 protocol, the cost of the base station will be greatly increased. For method two, starting from the reference base station, to the synchronization base station 1, synchronization base station 2, and so on to synchronization base station X. In this link, as long as one of the sync base stations is abnormal in time, the sync base station serves as a reference base station for the next sync base station, and sync base stations following the sync base station are abnormal in time.

Disclosure of Invention

The application provides a method, a device and related equipment for acquiring accumulated deviation, which can improve the accuracy of the acquired accumulated deviation.

The first aspect of the present application provides a method for obtaining an accumulated bias.

The method comprises the following steps: the second access network equipment receives M first accumulated deviations from M first access network equipment, the M first accumulated deviations are in one-to-one correspondence with the M first access network equipment, the M first accumulated deviations correspond to N reference access network equipment, N is an integer greater than or equal to 1, M is an integer greater than or equal to N, and the second access network equipment obtains target accumulated deviations according to the M first accumulated deviations. Wherein the one-to-one correspondence of the M first accumulated deviations with the M first access network devices means that the second access network device obtains a first accumulated deviation from each of the M first access network devices. The M first accumulated deviations correspond to N reference access network devices, that is, zero points of the M first accumulated deviations are the N reference access network devices, and the M first accumulated deviations are accumulated deviations between the M first access network devices or the second access device and the N reference access network devices, where the deviations may include time deviations and/or frequency deviations.

In the present application, the second access network device may receive a plurality of accumulated deviations, and determine a target accumulated deviation from the plurality of accumulated deviations. The accuracy of the target accumulated deviation used by the second access network device can be improved.

In an alternative design of the first aspect, the M first accumulated deviations are M time deviations and/or frequency deviations of the M first access network devices from the N reference access network devices; the method further comprises the steps of: the second access network equipment acquires M second accumulated deviations according to the M first accumulated deviations and the M first deviations, wherein one second accumulated deviation is equal to the sum of one first deviation and one first accumulated deviation, the M first accumulated deviations correspond to the M first deviations one by one, and the M first deviations are M time deviations and/or frequency deviations of the M first access network equipment and the second access network equipment; the second access network device determines a target accumulated deviation from the M second accumulated deviations. The method and the device define M first accumulated deviations as M time deviations and/or frequency deviations of M first access network devices and N reference access network devices, and in this case, the target accumulated deviations are accumulated deviations of the second access device and the target reference access network devices, so that the second device can conveniently transmit the target accumulated deviations in a broadcasting mode.

In an alternative design of the first aspect, the method further comprises: the second access network device sends second information to the third access network device, the second information including the target cumulative deviation.

In an optional design of the first aspect, after the second access network device obtains the M first deviations, and the third access network device obtains the second deviations, the second access network device sends the second information to the third access network device, where the second deviations are time deviations and/or frequency deviations of the second access network device and the third access network device. In the transmission of the accumulated deviation, the access network equipment can acquire the deviation from the adjacent station in advance, so that the transmission rate of the accumulated deviation is improved.

In an alternative design of the first aspect, the second access network device sends the second information to the third access network device in a broadcast manner. The second access network equipment does not need to determine who the receiver is, so that the compatibility of the method for acquiring the accumulated deviation is improved and the modification of the configuration information of the method is reduced under the condition of newly building and modifying the access network equipment.

In an alternative design of the first aspect, M is greater than N, N is greater than 1, a plurality of the M second accumulated deviations correspond to one abnormal reference access network device, the N reference access network devices including the abnormal reference access network device; the second access network device determining a target accumulated bias among the M second accumulated biases includes: if the plurality of second accumulated deviations are outliers in the M second accumulated deviations, the second access network equipment determines that the second accumulated deviations corresponding to the abnormal reference access network equipment do not comprise the target accumulated deviations. The method and the device improve the accuracy of the target accumulated deviation by eliminating a plurality of second accumulated deviations corresponding to the abnormal reference access network device.

In an optional design of the first aspect, the second access network device receives reference access network device identifications of the abnormal reference access network devices corresponding to the plurality of second accumulated deviations; and if the accumulated deviations are outliers in the M second accumulated deviations, the second access network equipment sends a reference access network equipment abnormality prompt to the management equipment, wherein the reference access network equipment abnormality prompt comprises a reference access network equipment identifier. After receiving the abnormal prompt of the reference access network equipment, the management equipment can determine which reference access network equipment is abnormal in time and/or frequency through the reference access network equipment identification, and adjust the abnormal prompt. For convenience in management, a unified management device is set up, and accuracy of target accumulated deviation obtained later is improved.

In an alternative design of the first aspect, the M second accumulated deviations include an abnormal accumulated deviation, and the second access network device determines that the abnormal accumulated deviation is not the target accumulated deviation if the abnormal accumulated deviation is outlier in the M second accumulated deviations. The method and the device improve the accuracy of the target accumulated deviation by eliminating the abnormal accumulated deviation.

In an optional design of the first aspect, the second access network device receives an access network device identifier of an abnormal access network device, the abnormal access network device is an access network device for which the second access network device receives an abnormal accumulated deviation, and the M first access network devices include abnormal access network devices; if the abnormal accumulated deviation is outlier in the M second accumulated deviations, the second access network equipment sends an access network equipment abnormal prompt to the management equipment, and the access network equipment abnormal prompt comprises an access network equipment identifier. After receiving the abnormality prompt of the access network equipment, the management equipment can determine which access network equipment is abnormal in time and/or frequency through the access network equipment identification, and adjust the abnormal time and/or frequency. For convenience in management, a unified management device is set up, and accuracy of target accumulated deviation obtained later is improved.

In an alternative design of the first aspect, the method further comprises: if at least two second accumulated deviations in the M second accumulated deviations are larger than the first threshold, the second access network equipment determines that the second access network equipment is abnormal, and the at least two second accumulated deviations correspond to at least two reference access network equipment in the N reference access network equipment. By determining the abnormality of the method, the method can avoid the backward transmission of inaccurate target accumulated deviation, and improve the accuracy of the accumulated deviation acquired by the subsequent access network equipment.

In an alternative design of the first aspect, the method further comprises: the second access network equipment receives X accumulated deviations from the first target access network equipment for X times, the change rate of the X accumulated deviations is smaller than a first threshold value, and the first target access network equipment acquires first access network equipment of target accumulated deviations for the second access network equipment. The method and the device for determining the target accumulated deviation are stable, so that the accumulated deviation is obtained for X times from first target access network equipment for obtaining the target accumulated deviation, the stability of the X accumulated deviations is evaluated through the change rate, and the accuracy of the target accumulated deviation is further guaranteed.

In an alternative design of the first aspect, the method further comprises: the second access network equipment acquires second deviation, wherein the second deviation is time deviation and/or frequency deviation of the second access network equipment and third access network equipment; the second access network device sends a second deviation to the terminal, and the second deviation is used for the terminal to advance or delay the second deviation to receive the data sent by the third access network device. After the second access network device obtains the second deviation from the third access network device, the second access network device and/or the third access network device may be adjusted to synchronize the second access network device and the third access network device. If the terminal acquires the second deviation under the condition that the terminal and the second access network equipment are in downlink synchronization when the terminal is not in the adjustment, the terminal can realize the downlink synchronization with the third access network equipment, so that the data sent by the third access network equipment can be received. The method for the terminal to successfully receive the data of the two unsynchronized access network devices under the condition that the deviation of the access network devices is not regulated is provided, so that the regulation of the access network devices on the deviation can be reduced.

In an alternative design of the first aspect, the method further comprises: the second access network device receives M first levels from the M first access network devices, and the M first levels and the M first accumulated deviations are in one-to-one correspondence. The first level number is the number of access network devices between M first accumulated deviations and respective zero points, which are N reference access network devices, minus 1. By acquiring the first level number, it can be accurately known how many levels of transmission the acquired accumulated deviation passes before being transmitted to the second access network device.

In an optional design of the first aspect, the first target number of levels is less than the second threshold, or the first target number of levels is a smallest number of M first number of levels, the first target number of levels corresponding to the target cumulative deviation. The first target level number corresponding to the target accumulated deviation means that a path or link for acquiring the target accumulated deviation is the same as a path or link for acquiring the first level number. The accuracy of the target accumulated deviation can be further improved by determining that the first target progression is smaller than the second threshold, or that the first target progression is the smallest progression of the M first progression.

In an alternative design of the first aspect, the difference between the first time and the second time is less than a third threshold, the second time is a time when the second access network device determines the target accumulated deviation, the first time is a time when the second access network device receives the first target accumulated deviation, and the first target accumulated deviation corresponds to the target accumulated deviation. Wherein, the difference value between the first time and the second time is smaller than the third threshold, so that the accuracy of the target accumulated deviation can be further improved.

A second aspect of the present application provides an apparatus for obtaining an accumulated bias.

The device comprises a receiving module, a first receiving module and a second receiving module, wherein the receiving module is used for receiving M first accumulated deviations from M first access network devices, the M first accumulated deviations are in one-to-one correspondence with the M first access network devices, the M first accumulated deviations correspond to N reference access network devices, N is an integer greater than or equal to 1, M is an integer greater than or equal to N, and M is an integer greater than 1;

and the acquisition module is used for acquiring the target accumulated deviation according to the M first accumulated deviations.

In an alternative design of the second aspect, the M first accumulated deviations are M time deviations and/or frequency deviations of the M first access network devices from the N reference access network devices;

the acquisition module is further configured to acquire M second accumulated deviations according to the M first accumulated deviations and the M first deviations, where one second accumulated deviation is equal to a sum of one first deviation and one first accumulated deviation, the M first accumulated deviations and the M first deviations are in one-to-one correspondence, and the M first deviations are M time deviations and/or frequency deviations of the M first access network devices and the second access network device;

the acquisition module is specifically configured to determine a target accumulated deviation from the M second accumulated deviations.

In an alternative design of the second aspect, the apparatus further comprises:

and the sending module is used for sending second information to the third access network equipment, wherein the second information comprises the target accumulated deviation.

In an optional design of the second aspect, the sending module is specifically configured to send the second information to the third access network device after the device obtains M first deviations, where the second deviation is a time deviation and/or a frequency deviation between the second access network device and the third access network device.

In an alternative design of the second aspect, the sending module is specifically configured to send the second information to the third access network device in a broadcast manner.

In an alternative design of the second aspect, M is greater than N, N is greater than 1, a plurality of the M second accumulated deviations correspond to one abnormal reference access network device, the N reference access network devices including the abnormal reference access network device;

the acquisition module is specifically configured to determine that the second accumulated deviation corresponding to the abnormal reference access network device does not include the target accumulated deviation if the plurality of second accumulated deviations are outliers in the M second accumulated deviations.

In an optional design of the second aspect, the receiving module is further configured to receive reference access network device identifiers of abnormal reference access network devices corresponding to the plurality of second accumulated deviations;

The sending module is further configured to send a reference access network device exception prompt to the management device if the plurality of accumulated deviations are outliers in the M second accumulated deviations, where the reference access network device exception prompt includes a reference access network device identifier.

In an alternative design of the second aspect, the M second cumulative deviations comprise abnormal cumulative deviations;

the acquisition module is specifically configured to determine that the abnormal accumulated deviation is not the target accumulated deviation if the abnormal accumulated deviation is outlier in the M second accumulated deviations.

In an optional design of the second aspect, the receiving module is further configured to receive an access network device identifier of an abnormal access network device, where the abnormal access network device is an access network device that receives an abnormal accumulated deviation by the apparatus, and the M first access network devices include abnormal access network devices;

the sending module is further configured to send an access network device anomaly prompt to the management device if the anomaly accumulated deviation is outlier in the M second accumulated deviations, where the access network device anomaly prompt includes an access network device identifier.

In an alternative design of the second aspect, the apparatus further comprises:

the determining module is configured to determine that the device is abnormal if at least two second accumulated deviations of the M second accumulated deviations are greater than the first threshold, where the at least two second accumulated deviations correspond to at least two reference access network devices of the N reference access network devices.

In an optional design of the second aspect, the receiving module is further configured to receive X accumulated deviations from the first target access network device X times, where a rate of change of the X accumulated deviations is less than a first threshold, and the first target access network device obtains the first access network device of the target accumulated deviation for the second access network device.

In an optional design of the second aspect, the obtaining module is further configured to obtain a second deviation, where the second deviation is a time deviation and/or a frequency deviation of the second access network device and the third access network device;

the sending module is further configured to send a second offset to the terminal, where the second offset is used for the terminal to advance or retard the second offset to receive data sent by the third access network device.

In an optional design of the second aspect, the receiving module is further configured to receive M first levels from M first access network devices, where the M first levels and the M first accumulated deviations are in one-to-one correspondence.

In an alternative design of the second aspect, the first target number of levels is less than the second threshold, or the first target number of levels is a smallest number of M first numbers of levels, the first target number of levels corresponding to the target cumulative deviation.

In an alternative design of the second aspect, the difference between the first time and the second time is less than a third threshold, the second time is a time when the second access network device determines the target accumulated deviation, the first time is a time when the second access network device receives the first target accumulated deviation, and the first target accumulated deviation corresponds to the target accumulated deviation.

A third aspect of the present application provides an access network device.

The apparatus includes: a memory and a processor that invokes program code stored in the memory to perform the method of the first aspect or any of the alternative designs of the first aspect.

A fourth aspect of the present application provides a computer program product, characterized in that the computer program product, when executed on a computer, causes the computer to perform the method of any one of the preceding first aspect or the alternative designs of the first aspect.

A fifth aspect of the present application provides a computer storage medium having instructions stored therein, which when executed on a computer, cause the computer to perform the method of any one of the preceding first aspect or the alternative designs of the first aspect.

Drawings

Fig. 1 is a schematic diagram of a network architecture in an embodiment of the present application;

fig. 2 is a schematic diagram of a base station acquiring a time offset;

FIG. 3 is a schematic flow chart of acquiring accumulated deviation in the embodiment of the present application;

FIG. 4 is a schematic diagram of a route for transmitting accumulated bias before determining a transmission path according to an embodiment of the present application;

FIG. 5 is a schematic diagram of a route for transmitting accumulated bias after determining a transmission path according to an embodiment of the present application;

FIG. 6 is a schematic diagram of another route for transmitting accumulated bias before determining a transmission path according to an embodiment of the present application;

FIG. 7 is a schematic diagram of a route for transmitting accumulated bias in a partially determined state in an embodiment of the present application;

FIG. 8 is a schematic flow chart of obtaining time deviation in the embodiment of the present application;

FIG. 9 is a schematic structural diagram of a device for acquiring accumulated deviation according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of an access network device in an embodiment of the present application.

Detailed Description

The embodiment of the application provides a method, a device and related equipment for acquiring accumulated deviation, which are applied to the field of communication and can improve the accuracy of the acquired accumulated deviation.

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.

It should be understood that the technical solution of the embodiment of the present invention may be applied to various communication systems, for example: global system for mobile communications (global system for mobile communications, GSM) system, code division multiple access (code division multiple access, CDMA) system, wideband code division multiple access (wideband code division multiple access, WCDMA) system, general packet radio service (General Packet Radio Service, GPRS), long term evolution (Long Term Evolution, LTE) system, LTE frequency division duplex (Frequency Division Duplex, FDD) system, LTE time division duplex (Time Division Duplex, TDD), universal mobile telecommunications system (Universal Mobile Telecommunication System, UMTS), worldwide interoperability for microwave access (Worldw ideInter operability for Microwave Access, wiMAX) communication system, or future fifth generation mobile communication technology (5G) system, etc.

In order to better understand the method for acquiring the accumulated deviation in the embodiment of the present application, the network framework of the embodiment of the present application is described below.

Referring to fig. 1, fig. 1 is a schematic diagram of a network architecture in an embodiment of the present application.

The network framework includes: an access network device 101, an access network device 102 and an access network device 103.

The access network device 101, the access network device 102 and the access network device 103 may be used as radio access network (radio access network, RAN) devices for implementing the functions of radio physical entities, resource scheduling and radio resource management, radio access control, mobility management, etc. For example, the radio access network device may be a base station (base transceiver station, BTS) in a GSM or CDMA system, a Node B (NB) in a WCDMA system, an evolved node B (evolutional nodeB, eNB) in an LTE system, a radio controller in a cloud radio access network (cloud radio access network, CRAN) scenario, a relay node station, a transmission reception point (transmission reception point, TRP), an access point, an in-vehicle device, a Road Side Unit (RSU), a wearable device, a network device in a future 5G network, such as an NR nodeB, a next generation base station (gNB), a Centralized Unit (CU), a Distributed Unit (DU) or a network device in a future evolved public land mobile network (public land mobile network, PLMN), etc.

Time and frequency synchronization is required between the access network device and the access network device. For example, in the Time Division synchronous code Division multiple access (TD-SCDMA) technology (Time Division-Synchronous Code Division Multiple Access, TD-SCDMA), enhanced Inter-cell interference coordination (enhanced Inter-Cell Interference Coordination, eICIC), enhanced multimedia broadcast multicast service (Enhanced Multimedia Broadcast Multicast Service, E-MBMS), and the like. The access network device therefore has stringent requirements on the accuracy of the clock signal. Two methods for the access network device to obtain the time offset are described below.

In the first method, the base station acquires the time deviation from the satellite through a synchronous satellite card, such as a GPS satellite card. Or the base station obtains the time deviation through a clock server supporting the IEEE1588V2 protocol of the network measurement and control system.

As shown in fig. 2, fig. 2 is a schematic diagram of a base station acquiring time offset. In fig. 2, each circle represents one base station. Wherein, base station 0 is reference base station 0. The base station 1a acquires the time offset 1 of the reference base station 0 and the base station 1a, and modifies the clock of the base station 1a, thereby achieving time synchronization with the reference base station 0. The base station 2a acquires the time offset 2 of the reference base station 2a and the base station 2b, and modifies the clock of the base station 2a, thereby achieving time synchronization with the reference base station 0. And so on until the base station of the entire path 1 or link 1 is time synchronized with the reference base station 0. Path 1 or link 1 is reference base station 0-base station 1 a-base station 2 a-base station 3 a-base station 4a. In addition to link 1 there may be a link 2, for example in fig. 2, link 2 is reference base station 0-base station 1 b-base station 2 b-base station 3 b-base station 4b.

For the first method, if each base station carries a GPS star card or supports IEEE 1588V2 protocol, the cost of the base station will be greatly increased. For method two, each link is fixedly configured. If the time of one base station in the link is abnormal, the time of all base stations in the link is abnormal. For example, if the time of the base station 1a is abnormal, the time of the base station 2a, the base station 3a, and the base station 4a are abnormal. The reason why the base station 1a is abnormal in time may be that the time deviation 1 acquired by the base station 1a is wrong, or that the clock of the base station 1a is abnormal, or the like.

For this reason, the embodiment of the application provides a method for acquiring the accumulated deviation. In this method, the access network device 101 acquires 2 first integrated deviations from the access network device 102 and the access network device 103, and acquires a target integrated deviation from the 2 first integrated deviations. In practical applications, the access network device 101 may also obtain more first accumulated deviations. By acquiring the target integrated deviation from the plurality of first integrated deviations, the accuracy of the target integrated deviation can be improved. In particular, even if part of the first accumulated deviations is abnormal, the access network device 101 may select the remaining first accumulated deviations, thereby improving the fault tolerance of the method.

In this embodiment of the present application, the first accumulated deviation may be a deviation between the access network device 102 and the reference access network device, or may be a deviation between the access network device 101 and the reference access network device. If the first accumulated deviation is a deviation between the access network device 101 and the reference access network device, the access network device 102 obtains a first deviation between the access network device 101 and the access network device 102, and a sum of the first deviation and the first accumulated deviation is a deviation between the access network device 101 and the reference access network device. Since in the embodiment of the present application, the access network device 102 is expected to transmit the first accumulated deviation by broadcasting, the first accumulated deviation is expected to be the deviation between the access network device 102 and the reference access network device. This will be described below by way of example.

Referring to fig. 3, fig. 3 is a flowchart illustrating a process of acquiring accumulated deviation according to an embodiment of the present application.

In step 301, the second access network device receives M first accumulated deviations from the M first access network devices.

The M first accumulated deviations are in one-to-one correspondence with the M first access network devices, the M first accumulated deviations are corresponding to the N reference access network devices, N is an integer greater than or equal to 1, M is an integer greater than or equal to N, and M is an integer greater than 1. Referring to fig. 4, fig. 4 is a schematic diagram illustrating a route for transmitting accumulated deviation before determining a transmission path according to an embodiment of the present application. Similar to fig. 2, each circle in fig. 4 represents an access network device. However, for convenience of description, three limitations are set forth below with respect to fig. 4. Defining 1, in fig. 4, the accumulated offset is transferred from left to right layer by layer, access network device 0 is a layer, access network device 1a, access network device 1b, access network device 1c is a layer, access network device 2a, access network device 2b, access network device 2c is a layer, and so on. And limiting 2, wherein the access network equipment of the upper layer does not receive the accumulated deviation sent by the access network equipment of the lower layer. And 3, defining the time for the access network equipment to send the target accumulated deviation in each layer to be sequentially executed from top to bottom. It should be appreciated that definition 1, definition 2 and definition 3 are for ease of illustration, and that in actual practice these definitions are necessarily required. In fig. 4, each access network device may be a second access network device except for access network device 0 and access network device 1 a. The access network device that directly communicates the accumulated offset to the second access network device is the first access network device. The access network device 0 is a reference access network device 0. For example, if the access network device 2a is the second access network device, the access network device 1b, the access network device 1a is the first access network device, the value of M is 2, the access network device 0 is the reference access network device, and the value of N is 1. If the access network device 1b is the second access network device, the access network device 0, the access network device 1a is the first access network device, the value of M is 2, the access network device 0 is the reference access network device, and the value of N is 1. If the access network device 2b is the second access network device, the access network device 1a, the access network device 1b, the access network device 1c, the access network device 2a is the first access network device, the value of M is 4, the access network device 0 is the reference access network device, and the value of N is 1. It should be determined that not only neighboring access network devices may act as the first access network device and the second access network device. In the embodiment of the present application, it is desirable that the access network device delivers the accumulated offset by broadcasting, so that the first access network device and the second access network device in the illustration are adjacent. In practical application, each access network device may not only receive the accumulated deviation with one reference access network device as a zero point, but fig. 4 is only for convenience of explanation, and in the following description, a scenario of a plurality of reference access network devices will be described. It should be determined that the access network device 0 and the access network device 1a may also be the second access network device, without definition 1, definition 2 and definition 3.

Optionally, the base station access network device does not act as a second access network device.

The association relationship between the first access network device, the second access network device and the reference access network device is described above, and for convenience in understanding the embodiments of the present application, the transmission of the accumulated offset is correspondingly described below by taking fig. 4 as an example.

The access network device 0 obtains the deviation through a synchronous satellite card or a clock server supporting the IEEE 1588V2 protocol of the network measurement and control system, corrects own time deviation and/or frequency deviation, and enables the access network device 0 to serve as a reference access network device.

The access network device 0 broadcasts a message 0, where the message 0 is used to inform surrounding access network devices, and the access network device 0 is a reference access network device. In the example of fig. 4, the access network device 1a, the access network device 1b and the access network device 1c may receive the message 0.

By means of the message 0, the access network device 1a knows that it is the first level access network device itself, i.e. without having to acquire the accumulated offset. The access network device 1a may obtain the deviation 0-1a of the access network device 1a from the access network device 0. The bias may include a time bias and/or a frequency bias, which will be described later as how the bias is obtained. The access network device 1a broadcasts a message 1a, the message 1a comprising an accumulated offset 1a, the accumulated offset 1a being equal to the offset 0-1a.

The access network device 1b may receive message 0 and message 1a. The access network device 1b may also obtain deviations 1a-1b of the access network device 1b and the access network device 1a, deviations 0-1b of the access network device 1b and the access network device 0. The access network device 1b may obtain the deviation of 2 access network devices 1b from the reference access network device. One of which is offset 1a-1b plus offset 0-1a and the other of which is offset 0-1b. The access network device 1b selects a deviation of one access network device 1b from the reference access network device. Here it is assumed that the access network device 1b selects the offset 0-1b. The access network device 1b broadcasts a message 1b, the message 1b comprising an accumulated offset 1b, the accumulated offset 1b being equal to the offset 0-1b.

The access network device 1c may receive message 0 and message 1b. The access network device 1c may also obtain deviations 1b-1c of the access network device 1c and the access network device 1b, deviations 0-1c of the access network device 1c and the access network device 0. The access network device 1c may obtain the deviations of 2 access network devices 1c from the reference access network device. One of which is offset 1b-1c plus offset 0-1b and the other of which is offset 0-1c. The access network device 1c selects a deviation of one access network device 1c from the reference access network device. Here it is assumed that the access network device 1c selects the offset 0-1c. The access network device 1c broadcasts a message 1c, the message 1c comprising an accumulated offset 1c, the accumulated offset 1c being equal to the offset 0-1c.

The access network device 2a may receive the message 1a and the message 1b. The access network device 2a may also obtain the deviations 1a-2a of the access network device 2a and the access network device 1a, the deviations 1b-2a of the access network device 2a and the access network device 1b. The access network device 2a may obtain the deviation of 2 access network devices 2a from the reference access network device. One of which is offset 1a-2a plus the cumulative offset 1a in message 1a and the other of which is offset 1b-2a plus the cumulative offset 1b in message 1b. The access network device 2a selects a deviation of one access network device 2a from the reference access network device. It is here assumed that the access network device 2a selects the offset 1a-2a plus the accumulated offset 1a in the message 1a. The access network device 2a broadcasts a message 2a, the message 2a comprising an accumulated offset 2a, the accumulated offset 2a being equal to the offset 1a-2a plus the accumulated offset 1a.

The access network device 2b may receive the message 1a, the message 1b, the message 1c, the message 2a. The access network device 2b may also obtain deviations 1a-2b of the access network device 2b and the access network device 1a, deviations 1b-2b of the access network device 2b and the access network device 1b, deviations 1c-2b of the access network device 2b and the access network device 1c, deviations 2a-2b of the access network device 2b and the access network device 2a. The access network device 2a may obtain the deviations of the 4 access network devices 2b from the reference access network device. One is the deviation 1a-2b plus the cumulative deviation 1a in message 1a, one is the deviation 1b-2b plus the cumulative deviation 1b in message 1b, one is the deviation 1c-2b plus the cumulative deviation 1c in message 1c, and one is the deviation 2a-2b plus the cumulative deviation 2a in message 2a. The access network device 2b selects a deviation of one access network device 2b from the reference access network device. It is here assumed that the access network device 2b selects the offset 1b-2b plus the accumulated offset 1b in the message 1b. The access network device 2b broadcasts a message 2b, the message 2b comprising an accumulated offset 2b, the accumulated offset 2b being equal to the offset 1b-2b plus the accumulated offset 1b.

The access network device 2c may receive the message 1b, the message 1c, the message 2b. The access network device 2c may also obtain deviations 1b-2c of the access network device 2c and the access network device 1b, deviations 1c-2c of the access network device 2c and the access network device 1c, deviations 2b-2c of the access network device 2c and the access network device 2b. The access network device 2c may obtain the deviations of the 3 access network devices 2c from the reference access network device. One is the offset 1b-2c plus the accumulated offset 1b in message 1b, one is the offset 1c-2c plus the accumulated offset 1c in message 1c, and one is the offset 2b-2c plus the accumulated offset 2b in message 2b. The access network device 2c selects a deviation of one access network device 2c from the reference access network device. It is assumed here that the access network device 2c selects the offset 1b-2c plus the accumulated offset 1b in the message 1b. The access network device 2c broadcasts a message 2c, the message 2c comprising an accumulated offset 2c, the accumulated offset 2c being equal to the offset 1b-2c plus the accumulated offset 1b.

And so on until all access network devices in fig. 4 have acquired a deviation from the reference access network device. Referring to fig. 5, fig. 5 is a schematic diagram illustrating a route for transmitting the accumulated offset after determining the transmission path according to the embodiment of the present application. Wherein, determining the transmission path means that the second access network device determines the deviation between itself and the reference access network device among the plurality of deviations. For example, the access network device 2c determines that the accumulated offset 2c is equal to the offset 1b-2c plus the accumulated offset 1b among the offsets of 3 access network devices 2c from the reference access network device. In fig. 5, only the connection between the access network device 2c and the access network device 1b is reserved, and the connection between the access network device 2c and the access network device 2b is deleted, and the connection between the access network device 2c and the access network device 1c is deleted.

In step 302, the second access network device obtains M first deviations from the M first access network devices.

For example, when the access network device 2c is a second access network device, the access network device 1b, the access network device 1c and the access network device 2b are first access network devices, and the second access network device obtains the deviation 1b-2c, the deviations 1c-2c and 2b-2c, and the m value is 3.

In step 303, the second access network device obtains M second accumulated deviations according to the M first deviations and the M first accumulated deviations.

For example, when the access network device 2c is a second access network device, the access network device 1b, the access network device 1c and the access network device 2b are first access network devices, 3 first offsets are offsets 1b-2c, offsets 1c-2c and offsets 2b-2c,3 first accumulated offsets are accumulated offset 1b, accumulated offset 1c and accumulated offset 2b. The 3 second cumulative deviations are deviations 1b-2c plus cumulative deviation 1b, deviations 1c-2c plus cumulative deviation 1c, and deviations 2b-2c plus cumulative deviation 2b.

In step 304, the second access network device determines a target cumulative bias among the M second cumulative biases.

In the above description of step 301, the second access network device assumes that a certain second accumulated deviation is selected as the target accumulated deviation, and how the second access network device determines the target accumulated deviation will be described below.

Optionally, in order to determine a more accurate target accumulated deviation from among the plurality of second accumulated deviations, the embodiment of the present application determines the abnormal second accumulated deviation by a reverse elimination method, so that the abnormal second accumulated deviation is not taken as the target accumulated deviation. Determining anomalies includes determining anomaly reference access network equipment and/or determining anomaly access network equipment, respectively, as described below.

First, how to determine an abnormal reference access network device is described. Referring to fig. 6, fig. 6 is another schematic route for transmitting the accumulated offset before determining the transmission path according to the embodiment of the present application. Fig. 6 includes a reference access network device 0a, a reference access network device 0b, and a reference access network device 0c. The other circles represent access network devices. The transmission path of the accumulated deviation is shown before determining the transmission path, and in particular, reference is made to the description of fig. 4, which is not explained here. For convenience of description, a state is added herein, which is referred to as a partially determined state, where the partially determined state refers to that the partially access network device has determined a transmission path, and the partially access network device has not determined a transmission path. As shown in fig. 7, fig. 7 is a schematic diagram of a route for transmitting accumulated deviation in a partially determined state in the embodiment of the present application. In fig. 7, other access network devices than the access network device 3b have determined a path to deliver the accumulated offset, i.e. other access network devices have determined the target accumulated offset.

The access network device 3b is assumed to be a second access network device, and the first access network device is a first access network device 4a, a first access network device 4b, a first access network device 4c, a first access network device 2a, a first access network device 2b, a first access network device 2c, a first access network device 3a, a first access network device 3c. The access network device 3b may receive messages 4a, 4b, 4c, 2a, 2b, 2c, 3a, 3c. The message 4a is sent by the access network device 4a, the message 4a comprising a cumulative deviation 4a, the cumulative deviation 4a being equal to the sum of the deviation 5b-4a and the deviation 0c-5b, the deviation 5b-4a being the deviation of the access network device 5b and the access network device 4a, the deviation 0c-5b being the deviation of the access network device 0c and the access network device 5 b; the message 4b is sent by the access network device 4b, the message 4b comprising a cumulative deviation 4b, the cumulative deviation 4b being equal to the sum of the deviations 5b-4b and the deviations 0c-4b, the deviations 5b-4b being the deviations of the access network device 5b and the access network device 4b, the deviations 0c-5b being the deviations of the access network device 0c and the access network device 5 b; the message 4c is sent by the access network device 4c, the message 4c comprising a cumulative deviation 4c, the cumulative deviation 4c being equal to the sum of the deviations 4d-4c and the deviations 0b-4d, the deviations 4d-4c being the deviations of the access network device 4d and the access network device 4c, the deviations 0b-4d being the deviations of the access network device 0b and the access network device 4d, and so on.

The access network device 3b may obtain 8 second accumulated deviations by using the 8 first accumulated deviations and the 8 first deviations. The 8 first accumulated deviations are accumulated deviations 4a,4b, etc. The 8 first deviations are deviations 4a-3b of the access network device 3b from the access network device 4a, deviations 4b-3b of the access network device 3b from the access network device 4b, etc. If the plurality of second accumulated deviations are outliers in the M second accumulated deviations, the second access network equipment determines that the second accumulated deviations corresponding to the abnormal reference access network equipment do not comprise the target accumulated deviations. For example, the 8 second cumulative deviations are 4a,4b,4c,2a,2b,2c,3a,3c, respectively. The name corresponds to the name of the access network device. 4a is equal to the cumulative deviation 4a plus the deviation 4a-3b,4b is equal to the cumulative deviation 4b plus the deviation 4b-3b. If 2a,2b,2c are outliers in the 8 second accumulated deviations, the reference access network device 0a is considered to be abnormal, and the determination 3a cannot be used as the target accumulated deviation.

There may be many outlier algorithms, such as differences in mean or median, and embodiments of the present application are not limited as to what outlier algorithm is used.

Further, the second access network device receives reference access network device identifiers of the abnormal reference access network devices corresponding to the plurality of second accumulated deviations; and if the accumulated deviations are outliers in the M second accumulated deviations, the second access network equipment sends a reference access network equipment abnormality prompt to the management equipment, wherein the reference access network equipment abnormality prompt comprises a reference access network equipment identifier. For example, message 4a, message 4b, message 4c, message 2a, message 2b, message 2c, message 3a, message 3c also includes the reference access network device identification of reference access network device 0 a; if 2a,2b,2c are outliers in the 8 second accumulated deviations, the access network device 3b sends a reference access network device anomaly prompt to the management device, the reference access network device anomaly prompt comprising a reference access network device 0a identity.

Next, how to determine an abnormal access network device is described. The abnormal access network device may be a neighboring access network device, and may be itself. The following description will be made separately. Here, adjacency is not physical adjacency, but refers to the first access network device.

Taking the access network device 3b in fig. 7 as the second access network device as an example. If the abnormal accumulated deviation is outlier in the M second accumulated deviations, the second access network equipment determines that the abnormal accumulated deviation is not the target accumulated deviation. If 4a is outlier in the 8 second accumulated deviations, the access network device 3b determines that 4a is not the target accumulated deviation.

Further, the second access network device receives an access network device identifier of the abnormal access network device, the abnormal access network device is the access network device of which the second access network device receives the abnormal accumulated deviation, and the M first access network devices comprise the abnormal access network device; if the abnormal accumulated deviation is outlier in the M second accumulated deviations, the second access network equipment sends an access network equipment abnormal prompt to the management equipment, and the access network equipment abnormal prompt comprises an access network equipment identifier. For example, the message 4a includes an access network device identifier of the access network device 4a, and if the access network device 4a is outlier in the 8 second accumulated deviations, the access network device 3b sends an access network device anomaly prompt to the management device.

In addition to determining that neighboring access network devices are anomalous, it may also be determined whether they are anomalous. If at least two second accumulated deviations in the M second accumulated deviations are larger than the first threshold, the second access network equipment determines that the second access network equipment is abnormal, and the at least two second accumulated deviations correspond to at least two reference access network equipment in the N reference access network equipment. For example, the access network device 3b in fig. 7 is exemplified as the second access network device. If 4a,3a is outlier in the 8 second accumulated deviations, the access network device 3b determines that the access network device 3b is abnormal. After determining that the access network device 3b is abnormal, the access network device 3b may take some way to eliminate the abnormality, such as checking a clock configuration, restarting, etc.

The method of excluding the target integrated deviation in the above manner is also adopted, and the target integrated deviation may be determined in the following manner.

Optionally, the second access network device receives X accumulated deviations from the first target access network device X times, a change rate of the X accumulated deviations is smaller than a first threshold, and the first target access network device obtains a first access network device of the target accumulated deviations for the second access network device. Wherein the second access network device may receive a plurality of accumulated deviations from the first target access network device at a plurality of points in time. For example, the access network device 3b in fig. 7 is exemplified as the second access network device. The access network device 3b acquires a plurality of integrated deviations 4c from the access network device 4c at a plurality of time points, and determines that 4c satisfies one condition as a target integrated deviation if the rate of change of the plurality of integrated deviations 4c is smaller than a first threshold. The condition for satisfying the target accumulated deviation may be one or more.

Optionally, the second access network device receives M first levels from the M first access network devices, where the M first levels and the M first accumulated deviations are in one-to-one correspondence. The first number of levels is the number of deviations between the first access network device and the reference access network device. For example, the message 4a received by the access network device 3b in fig. 7 includes a first order, the first order being 2. For another example, the message 3a includes a first number of levels, the first number of levels being 3.

Further, the first target level is smaller than the second threshold, or the first target level is the minimum level in the M first levels, and the first target level corresponds to the target accumulated deviation. For example, the message 4c received by the access network device 3b in fig. 7 includes a first target level, the first target level being 2, and the second threshold being 5, as desired. Or for example, the first target number of steps of message 4c is 2, and the minimum of all the steps in messages 4a, 4b, 4c, 2a, 2b, 2c, 3a, 3c, then it is determined that 4c meets a condition as the target cumulative offset. The condition for satisfying the target accumulated deviation may be one or more. Further, if the abnormal reference access network device 0a and the abnormal access network device 4a are determined by the above method, the first target level of the message 4c is 2, and the minimum level among all levels in the message 4b, the message 4c and the message 3c is determined that the message 4c satisfies a condition as a target accumulated deviation.

Optionally, the difference between the first time and the second time is smaller than a third threshold, the second time is the time when the second access network device determines the target accumulated deviation, the first time is the time when the second access network device receives the first target accumulated deviation, and the first target accumulated deviation corresponds to the target accumulated deviation. Taking the access network device 3b in fig. 7 as the second access network device as an example, the time when the second access network device determines the target accumulated deviation refers to any time before broadcasting the target accumulated deviation after the access network device 3b obtains 8 second accumulated deviations. The first target integrated deviation corresponding to the target integrated deviation means that when the target integrated deviation is 4c, the first target integrated deviation is the integrated deviation 4c.

Optionally, the first target accumulated bias is most recently received by the second access network. For example, if the message 4c received by the access network device 3b in fig. 7 is received recently, the time of reception is 12:00, and the time of reception of other messages is 12:00 before, it is determined that 4c satisfies a condition as the target accumulated deviation. The condition for satisfying the target accumulated deviation may be one or more. Further, when the abnormal reference access network device 0a and the abnormal access network device 4a are determined by the above method, the moment of receiving the message 4c is the latest moment in receiving the message 4b, the message 4c and the message 3c, and it is determined that the message 4c satisfies one condition as the target accumulated deviation.

In step 305, the second access network device sends the target accumulated offset to the third access network device.

Optionally, the second access network device sends the target accumulated deviation in a broadcast manner.

In this embodiment of the present application, the second access network device includes two processes of acquiring the first deviation and acquiring the accumulated deviation. After the end of these two procedures, the second access network device can determine the transmission path. Alternatively, in order to improve the efficiency of acquiring the accumulated offset, the second access network device may acquire the first offset in advance and then receive the accumulated offset.

The method for acquiring the accumulated deviation in the embodiment of the present application is described above, in which the second access network device needs to acquire the first deviation from the first access network device, and the method for acquiring the first deviation is illustrated below. As shown in fig. 8, fig. 8 is a schematic flow chart of obtaining a time offset in an embodiment of the present application.

In step 801, the second access network device sends a synchronization request to the first access network device.

In step 802, the first access network device sends a synchronization request acknowledgement to the second access network device.

In step 803, the first access network device sends a synchronization assistance instruction to the terminal.

In step 804, the terminal transmits uplink data.

In step 805, the second access network device performs blind detection to obtain tacesses.

Taccs may include a frame number, a subframe number, and an intra-subframe offset.

In step 806, the first access network device performs blind detection and obtains Tneigh.

Tn_high may include a frame number, a subframe number, and an intra-subframe offset.

In step 807, the second access network device sends tacesses to the first access network device.

In step 808, the first access network device transmits Tneigh to the second access network device.

In step 809, a bias is obtained, the bias being equal to tacess minus Tneigh.

In step 810, a bias is obtained, the bias being equal to Tnhigh minus Taccess.

If the first access network device does not need to acquire the offset, steps 807 and 810 may not be performed. It should be determined that this is merely an example of a method for obtaining the first deviation, and in the embodiment of the present application, it is not limited which way to obtain the first deviation is used.

After the second access network equipment acquires the first deviation, recording the moment of acquiring the first deviation. And acquiring the first deviation again at the other moment, and recording the moment of acquiring the first deviation, so that the frequency deviation of the first access network equipment and the second access network equipment can be acquired, wherein the frequency deviation has the following formula:

P= (y 1-y 2)/(t 1-t 2). Wherein, P is the frequency deviation, y1 is the first deviation obtained for the first time, y2 is the first deviation obtained for the second time, t1 is the time of obtaining the first deviation for the first time, and t2 is the time of obtaining the first deviation for the second time.

By adopting the method for acquiring the accumulated deviation in the embodiment of the application, the second access network device can not only acquire the first deviation and the accumulated deviation, but also acquire other deviations. For example, taking the access network device 3b in fig. 7 as an example, the message received by the access network device 3b includes the message 4a, and if the accumulated offset 4a in the message 4a includes the offset 0c-5b, the offset 5b-4a. The access network device 3b can obtain the deviation 0c-5b of the access network device 0c from the access network device 5b and the deviation 5b-4a of the access network device 5b from the access network device 4a by interpreting the message 4a. The deviations 5b-3b of the access network device 3b and the access network device 5b may also be obtained by means of the deviations 4a-3b and the deviations 5b-4a. Thus, the number of offsets that can be acquired by the access network device 3b depends on the format of the message 4a, and if the accumulated offset 4a in the message 4a is the total offset, and not two independent offsets, offset 0c-5b and offset 5b-4a, the number of offsets that can be acquired by the access network device 3b will decrease.

In this way, as long as the message carries an independent deviation, and there are no restrictions 1, 2, and 3 in step 301, theoretically, by using the method for acquiring the accumulated deviation in the embodiment of the present application, the second access network device may acquire the deviation of any two access network devices in the system. The deviation of any two access network devices includes a deviation of the second access network device from any one access network device. After the second access network device obtains the deviation from any one access network device, the second access network device does not need to adjust its own clock so as to synchronize with another access network device. The following description is made so that the terminal is not affected by the unsynchronization of the two base stations without adjusting the clocks. For example, a second access network device and a third access network device. The second access network equipment acquires second deviation, wherein the second deviation is the time deviation of the second access network equipment and the third access network equipment. After the second access network device and the terminal realize downlink synchronization, the second access network device sends a second deviation to the terminal, and the second deviation is used for the terminal to advance or delay the second deviation to receive the data sent by the third access network device. On the basis of the downlink synchronization between the terminal and the second access network device, the terminal can realize the downlink synchronization with the second access network device through the second deviation, and can receive downlink data from the third access network device.

The method for acquiring the accumulated deviation in the embodiment of the present application is described above, and the apparatus for acquiring the accumulated deviation in the embodiment of the present application is described below.

Referring to fig. 9, fig. 9 is a schematic structural diagram of an apparatus for acquiring accumulated deviation according to an embodiment of the present application.

The device comprises: a receiving module 901, configured to receive M first accumulated deviations from M first access network devices, where the M first accumulated deviations are in one-to-one correspondence with the M first access network devices, the M first accumulated deviations are corresponding to N reference access network devices, N is an integer greater than or equal to 1, M is an integer greater than or equal to N, and M is an integer greater than 1;

an obtaining module 902, configured to obtain a target cumulative deviation according to the M first cumulative deviations.

Optionally, the M first accumulated deviations are M time deviations and/or frequency deviations of the M first access network devices and the N reference access network devices;

the obtaining module 902 is further configured to obtain M second accumulated deviations according to M first accumulated deviations and M first deviations, where one second accumulated deviation is equal to a sum of one first deviation and one first accumulated deviation, the M first accumulated deviations and the M first deviations are in one-to-one correspondence, and the M first deviations are M time deviations and/or frequency deviations of the M first access network devices and the second access network device;

The obtaining module 902 is specifically configured to determine a target accumulated deviation from the M second accumulated deviations.

Optionally, the apparatus further comprises:

Optionally, the sending module is specifically configured to send the second information to the third access network device after the device obtains M first deviations, where the second deviations are time deviations and/or frequency deviations of the second access network device and the third access network device.

Optionally, the sending module is specifically configured to send the second information to the third access network device in a broadcast manner.

Optionally, M is greater than N, N is greater than 1, a plurality of second accumulated deviations of the M second accumulated deviations correspond to one abnormal reference access network device, and the N reference access network devices include abnormal reference access network devices;

the obtaining module 902 is specifically configured to determine that the second accumulated offset corresponding to the abnormal reference access network device does not include the target accumulated offset if the plurality of second accumulated offsets are outliers in the M second accumulated offsets.

Optionally, the receiving module 901 is further configured to receive reference access network device identifiers of abnormal reference access network devices corresponding to the plurality of second accumulated deviations;

Optionally, the M second accumulated deviations comprise abnormal accumulated deviations;

the obtaining module 902 is specifically configured to determine that the abnormal accumulated deviation is not the target accumulated deviation if the abnormal accumulated deviation is outlier in the M second accumulated deviations.

Optionally, the receiving module 901 is further configured to receive an access network device identifier of an abnormal access network device, where the abnormal access network device is an access network device that receives an abnormal accumulated deviation, and the M first access network devices include abnormal access network devices;

Optionally, the apparatus further comprises:

Optionally, the receiving module 901 is further configured to receive X accumulated deviations from the first target access network device X times, where a change rate of the X accumulated deviations is smaller than a first threshold, and the first target access network device obtains a first access network device of the target accumulated deviations for the second access network device.

Optionally, the obtaining module 902 is further configured to obtain a second deviation, where the second deviation is a time deviation and/or a frequency deviation of the second access network device and the third access network device;

Optionally, the receiving module 901 is further configured to receive M first levels from M first access network devices, where the M first levels and the M first accumulated deviations are in one-to-one correspondence.

Optionally, the first target level is smaller than the second threshold, or the first target level is the smallest level of the M first levels, and the first target level corresponds to the target accumulated deviation.

Optionally, the difference between the first time and the second time is smaller than a third threshold, the second time is the time when the second access network device determines the target accumulated deviation, the first time is the time when the second access network device receives the first target accumulated deviation, and the first target accumulated deviation corresponds to the target accumulated deviation.

The device for acquiring the accumulated deviation in the embodiment of the present application is described above, and the access network device in the embodiment of the present application is described below.

Referring to fig. 10, fig. 10 is a schematic structural diagram of an access network device according to an embodiment of the present application.

As shown in fig. 10, the access network device 1000 includes a transceiver 1020, and a processor 1010. The access network device may be the access network device of fig. 1, the second access network device of fig. 8.

The transceiver 1020 is configured to receive M first accumulated deviations from M first access network devices, where the M first accumulated deviations are in one-to-one correspondence with the M first access network devices, the M first accumulated deviations are corresponding to N reference access network devices, N is an integer greater than or equal to 1, M is an integer greater than or equal to the N, and M is an integer greater than 1;

the processor 1010 is configured to obtain a target cumulative deviation from the M first cumulative deviations.

The processor 1010 may be an application-specific integrated circuit (ASIC), or a digital signal processor (digital signal processing, DSP), or chip for other specific processing functions, such as a baseband chip, or any combination thereof. The processor 1010 may refer to one processor or may include multiple processors.

The access network device 1000 may also include a memory, which may be disposed within the processor 1010 or external to the processor 1010, that stores elements, executable modules or data structures, or subsets thereof, or an extended set thereof, of instructions for operations of: including various operational instructions for carrying out various operations. Operating system: including various system programs for implementing various basic services and handling hardware-based tasks. The processor 1010 is further configured to execute the operation instructions to implement all or part of the operations that the second access network device may perform in any of fig. 4-8.

In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods may be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

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

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the prior art or all or part of the technical solution in the form of a software product stored in a storage medium, including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a flash disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

Claims

1. A method of obtaining an accumulated bias, comprising:

the second access network equipment receives M first accumulated deviations from M first access network equipment, wherein the M first accumulated deviations are in one-to-one correspondence with the M first access network equipment, the M first accumulated deviations correspond to N reference access network equipment, zero points of the M first accumulated deviations are the N reference access network equipment, the M first accumulated deviations are accumulated deviations of the M first access network equipment or the second access network equipment and the N reference access network equipment, N is an integer greater than or equal to 1, M is an integer greater than or equal to N, and M is an integer greater than 1;

and the second access network equipment acquires target accumulated deviation according to the M first accumulated deviations.

2. The method according to claim 1, wherein the M first accumulated deviations are M time deviations and/or frequency deviations of the M first access network devices from the N reference access network devices;

the method further comprises the steps of:

the second access network equipment acquires M second accumulated deviations according to the M first accumulated deviations and the M first deviations, wherein one second accumulated deviation is equal to the sum of one first deviation and one first accumulated deviation, the M first accumulated deviations are in one-to-one correspondence with the M first deviations, and the M first deviations are M time deviations and/or frequency deviations of the M first access network equipment and the second access network equipment;

The second access network device obtaining a target accumulated deviation according to the M first accumulated deviations includes:

the second access network device determines the target accumulated bias among the M second accumulated biases.

3. The method according to claim 2, wherein the method further comprises:

the second access network device sends second information to a third access network device, wherein the second information comprises the target accumulated deviation.

4. A method according to claim 3, wherein the second access network device sending the second information to a third access network device comprises:

after the second access network device obtains the M first deviations, and the third access network device obtains a second deviation, the second access network device sends the second information to the third access network device, where the second deviation is a time deviation and/or a frequency deviation between the second access network device and the third access network device.

5. The method of claim 3 or 4, wherein the second access network device sending the second information to a third access network device comprises:

and the second access network equipment sends the second information to the third access network equipment in a broadcasting mode.

6. The method according to any of claims 2 to 5, wherein M is greater than N, N is greater than 1, a plurality of the M second accumulated deviations corresponding to one abnormal reference access network device, the N reference access network devices comprising the abnormal reference access network device;

the second access network device determining the target accumulated bias among the M second accumulated biases includes:

and if the second accumulated deviations are outliers in the M second accumulated deviations, the second access network equipment determines that the second accumulated deviations corresponding to the abnormal reference access network equipment do not comprise the target accumulated deviations.

7. The method of claim 6, wherein the method further comprises:

the second access network device receives the reference access network device identifiers of the abnormal reference access network devices corresponding to the second accumulated deviations;

and if the accumulated deviations are outliers in the M second accumulated deviations, the second access network equipment sends a reference access network equipment abnormality prompt to the management equipment, wherein the reference access network equipment abnormality prompt comprises the reference access network equipment identifier.

8. The method according to any of claims 2 to 7, wherein the M second accumulated deviations comprise abnormal accumulated deviations, and wherein the second access network device determining the target accumulated deviation from among the M second accumulated deviations comprises:

and if the abnormal accumulated deviation is outlier in the M second accumulated deviations, the second access network equipment determines that the abnormal accumulated deviation is not the target accumulated deviation.

9. The method of claim 8, wherein the method further comprises:

the second access network device receives an access network device identifier of an abnormal access network device, the abnormal access network device is the access network device which receives the abnormal accumulated deviation for the second access network device, and the M first access network devices comprise the abnormal access network device;

and if the abnormal accumulated deviation is outlier in the M second accumulated deviations, the second access network equipment sends an access network equipment abnormal prompt to the management equipment, wherein the access network equipment abnormal prompt comprises the access network equipment identifier.

10. The method according to any one of claims 2 to 9, characterized in that the method further comprises:

If at least two second accumulated deviations in the M second accumulated deviations are larger than a first threshold value, the second access network device determines that the second access network device is abnormal, and the at least two second accumulated deviations correspond to at least two reference access network devices in the N reference access network devices.

11. The method according to any one of claims 2 to 10, characterized in that the method further comprises:

the second access network device receives X accumulated deviations from a first target access network device for X times, the change rate of the X accumulated deviations is smaller than a first threshold, and the first target access network device obtains a first access network device of the target accumulated deviations for the second access network device.

12. The method according to any one of claims 2 to 11, further comprising:

the second access network equipment acquires second deviation, wherein the second deviation is time deviation and/or frequency deviation of the second access network equipment and third access network equipment;

and the second access network equipment sends the second deviation to a terminal, and the second deviation is used for the terminal to advance or delay the second deviation to receive the data sent by the third access network equipment.

13. The method according to any of claims 2 to 12, wherein a difference between a first time instant and a second time instant is less than a third threshold, the second time instant being a time instant at which the second access network device determines the target accumulated offset, the first time instant being a time instant at which the second access network device receives a first target accumulated offset, the first target accumulated offset corresponding to the target accumulated offset.

14. The method according to any one of claims 1 to 13, further comprising:

the second access network device receives M first series from the M first access network devices, and the M first series and the M first accumulated deviations are in one-to-one correspondence.

15. The method of claim 14, wherein a first target progression is less than a second threshold, or the first target progression is a smallest progression of the M first progression, the first target progression corresponding to the target cumulative deviation.

16. An apparatus for obtaining an accumulated bias, comprising:

a receiving module, configured to receive M first accumulated deviations from M first access network devices, where the M first accumulated deviations are in one-to-one correspondence with the M first access network devices, the M first accumulated deviations are corresponding to N reference access network devices, a zero point of the M first accumulated deviations included in the M first access network devices is the N reference access network devices, the M first accumulated deviations are accumulated deviations between the M first access network devices or between the M first access network devices and the N reference access network devices, the N is an integer greater than or equal to 1, the M is an integer greater than or equal to the N, and the M is an integer greater than 1;

And the acquisition module is used for acquiring target accumulated deviations according to the M first accumulated deviations.

17. The apparatus according to claim 16, wherein the M first accumulated deviations are M time deviations and/or frequency deviations of the M first access network devices from the N reference access network devices;

the obtaining module is further configured to obtain M second accumulated deviations according to the M first accumulated deviations and the M first deviations, where one second accumulated deviation is equal to a sum of one first deviation and one first accumulated deviation, the M first accumulated deviations are in one-to-one correspondence with the M first deviations, and the M first deviations are M time deviations and/or frequency deviations of the M first access network devices and the second access network device;

the acquisition module is specifically configured to determine the target accumulated deviation from the M second accumulated deviations.

18. The apparatus of claim 17, wherein the apparatus further comprises:

and the sending module is used for sending second information to third access network equipment, wherein the second information comprises the target accumulated deviation.

19. The apparatus of claim 18, wherein the device comprises a plurality of sensors,

The sending module is specifically configured to send the second information to the third access network device after the device obtains the M first deviations, where the second deviations are time deviations and/or frequency deviations of the second access network device and the third access network device.

20. The device according to claim 18 or 19, wherein,

the sending module is specifically configured to send the second information to the third access network device in a broadcast manner.

21. The apparatus according to any one of claims 17 to 20, wherein M is greater than N, N is greater than 1, a plurality of the M second accumulated deviations corresponding to one abnormal reference access network device, the N reference access network devices comprising the abnormal reference access network device;

the acquisition module is specifically configured to determine that the plurality of second accumulated deviations does not include the target accumulated deviation if the plurality of second accumulated deviations are outliers in the M second accumulated deviations.

22. The apparatus of claim 21, wherein the device comprises a plurality of sensors,

the receiving module is further configured to receive reference access network device identifiers of the abnormal reference access network devices corresponding to the plurality of second accumulated deviations;

The sending module is further configured to send a reference access network device exception prompt to a management device if the plurality of accumulated offsets are outliers in the M second accumulated offsets, where the reference access network device exception prompt includes the reference access network device identifier.

23. The apparatus of any one of claims 17 to 22, wherein the M second cumulative deviations comprise abnormal cumulative deviations;

24. The apparatus of claim 23, wherein the device comprises a plurality of sensors,

the receiving module is further configured to receive an access network device identifier of an abnormal access network device, where the abnormal access network device is an access network device that the apparatus receives the abnormal accumulated deviation, and the M first access network devices include the abnormal access network device;

the sending module is further configured to send an access network device exception prompt to the management device if the exception accumulated deviation is outlier in the M second accumulated deviations, where the access network device exception prompt includes the access network device identifier.

25. The apparatus according to any one of claims 17 to 24, further comprising:

and the determining module is used for determining that the device is abnormal if at least two second accumulated deviations in the M second accumulated deviations are larger than a first threshold value, wherein the at least two second accumulated deviations correspond to at least two reference access network devices in the N reference access network devices.

26. The apparatus according to any one of claims 17 to 25, wherein,

the receiving module is further configured to receive X accumulated deviations from a first target access network device for X times, where a rate of change of the X accumulated deviations is smaller than a first threshold, and the first target access network device obtains a first access network device of the target accumulated deviations for the second access network device.

27. The apparatus according to any one of claims 17 to 26, wherein,

the acquisition module is further configured to acquire a second deviation, where the second deviation is a time deviation and/or a frequency deviation of the second access network device and the third access network device;

the sending module is further configured to send the second offset to a terminal, where the second offset is used for the terminal to advance or delay the second offset to receive data sent by the third access network device.

28. The apparatus according to any of claims 17 to 27, wherein a difference between a first time instant and a second time instant is less than a third threshold, the second time instant being a time instant at which the second access network device determines the target accumulated offset, the first time instant being a time instant at which the second access network device receives a first target accumulated offset, the first target accumulated offset corresponding to the target accumulated offset.

29. The apparatus according to any one of claims 16 to 28, wherein,

the receiving module is further configured to receive M first levels from the M first access network devices, where the M first levels and the M first accumulated deviations are in one-to-one correspondence.

30. The apparatus of claim 29, wherein a first target progression is less than a second threshold, or the first target progression is a smallest progression of the M first progression, the first target progression corresponding to the target cumulative deviation.

31. An access network device, comprising: a memory and a processor that invokes program code stored in the memory to perform the method as described in any one of claims 1 to 15.