CN103004257B

CN103004257B - A kind of method and device predicting Target cell

Info

Publication number: CN103004257B
Application number: CN201180001130.1A
Authority: CN
Inventors: 赵红霞
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2011-07-21
Filing date: 2011-07-21
Publication date: 2016-09-07
Anticipated expiration: 2031-07-21
Also published as: WO2012159336A1; CN103004257A

Abstract

The invention discloses a kind of method and device predicting Target cell, relate to technical field of communication network, the accuracy of the next community that prediction MRS will enter can be improved.The scheme that the embodiment of the present invention provides is by obtaining the movement rule of MRS, the cell information of the predetermined number of community, MRS switching process it is currently located according to the movement rule of MRS obtained, MRS, the Target cell that prediction MRS will enter, when the community switched into when MRS is actual is inconsistent with Target cell, it is corrected or reacquires the movement rule of MRS.The scheme that the embodiment of the present invention provides is suitable for being predicted MRS or use during next community that terminal will enter.

Description

Method and device for predicting target cell

Technical Field

The present invention relates to the field of communications network technologies, and in particular, to a method and an apparatus for predicting a target cell.

Background

When a User is on a high-speed train, due to the fast changing channel characteristics and the shielding effect of a train body, the link quality between a User Equipment (UE) terminal in a carriage and a roadside base station is reduced, the call drop rate and the handover failure rate are both high, and then an MRS (mobile relay station) occurs, where the MRS is a relay station placed on a vehicle or a mobile carrier, and when the UE is located on the vehicle, the UE establishes a connection with a ground base station through the MRS, so that the shielding problem of the vehicle can be solved, and the terminal capability consumption and the overhead of an air interface are reduced.

When switching between the MRS on the vehicle and each base station, the switching needs to be completed quickly, and the MRS needs to relay a large amount of UE data, and needs to acquire a large amount of resources from the accessed base station instantaneously. When the MRS on a vehicle moves with the vehicle, and the prior art predicts the movement of the MRS on the vehicle, the MRS or the next cell that a terminal will enter is directly predicted according to the movement history of the MRS because the movement of the vehicle is regular; or, according to the cell where the MRS is currently located and the movement history, counting the probability of the cell adjacent to the current cell, and predicting the cell with the high probability as the next cell into which the MRS will enter.

However, when the network changes or the vehicle operation changes, the prior art predicts the movement of the MRS with low accuracy or cannot correctly predict the next cell into which the MRS will enter.

Disclosure of Invention

Embodiments of the present invention provide a method and an apparatus for predicting a target cell, which may improve the accuracy of predicting a next cell into which an MRS is to enter.

In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:

a method of predicting a target cell, comprising:

acquiring a movement rule of a Mobile Relay Station (MRS);

predicting a target cell into which the MRS is to enter according to the acquired MRS movement rule, the cell in which the MRS is currently located and the information of a preset number of cells switched by the MRS;

and when the cell into which the MRS is actually switched is inconsistent with the predicted target cell, correcting or reacquiring the movement rule of the MRS.

An apparatus for predicting a target cell, comprising:

the mobile learning unit is used for acquiring a movement rule of the mobile relay station MRS;

a mobile prediction execution unit, configured to predict a target cell into which the MRS will enter according to the acquired mobile rule of the MRS, a cell in which the MRS is currently located, and information of a predetermined number of cells through which the MRS is switched;

and the mobile verification unit is used for correcting or reacquiring the mobile rule of the MRS when the cell into which the MRS is actually switched is inconsistent with the predicted target cell.

The embodiment of the invention provides a method and a device for predicting a target cell, which predict a target cell to which an MRS will enter by acquiring a movement rule of a Mobile Relay Station (MRS), according to the acquired movement rule of the MRS, a cell in which the MRS is currently located and information of a preset number of cells switched by the MRS, and when the cell actually switched by the MRS to enter is inconsistent with the predicted target cell, correct or acquire the movement rule of the MRS again. Compared with the prior art that the prediction accuracy is lower or the next cell into which the MRS is to enter cannot be predicted correctly when the movement of the MRS is predicted, the scheme provided by the embodiment of the invention can modify incorrect prediction information by verifying the cell into which the MRS is actually switched and the predicted target cell, and can improve the accuracy of predicting the next cell into which the MRS is to enter.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a flowchart of a method for predicting a target cell according to embodiment 1 of the present invention;

fig. 2 is a block diagram of an apparatus for predicting a target cell according to embodiment 1 of the present invention;

fig. 3 is a flowchart of a method for predicting a target cell according to embodiment 2 of the present invention;

fig. 4 is a schematic diagram of sequentially stored handover record information in an MRS according to embodiment 2 of the present invention;

fig. 5 is a schematic diagram of a moving path of an MRS along with a vehicle according to embodiment 2 of the present invention;

fig. 6 is a flowchart of a method for obtaining a home mobile ring according to embodiment 2 of the present invention;

FIG. 7 is a flow chart of a basic prediction method provided in embodiment 2 of the present invention;

fig. 8 is a block diagram of an apparatus for predicting a target cell according to embodiment 2 of the present invention;

fig. 9 is a block diagram of a mobile learning unit provided in embodiment 2 of the present invention;

fig. 10 is a block diagram of a movement prediction execution unit according to embodiment 2 of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

An embodiment of the present invention provides a method for predicting a target cell, as shown in fig. 1, the method includes:

step 101, acquiring a movement rule of a mobile relay station MRS;

MRS (mobile relay station), a relay station that is mounted on a vehicle or a mobile carrier and receives and forwards a radio signal.

Step 102, predicting a target cell to which the MRS is about to enter according to the acquired MRS movement rule, the cell in which the MRS is currently located and the information of a preset number of cells switched by the MRS;

and 103, when the cell into which the MRS is actually switched is inconsistent with the predicted target cell, correcting or acquiring the movement rule of the MRS again.

The embodiment of the invention provides a method for predicting a target cell, which comprises the steps of predicting a target cell to which an MRS is about to enter by acquiring a movement rule of the MRS, according to the acquired movement rule of the MRS, a cell in which the MRS is currently located and information of a preset number of cells switched by the MRS, and correcting or re-acquiring the movement rule of the MRS when the cell switched by the MRS to enter is inconsistent with the predicted target cell. Compared with the prior art that the prediction accuracy is lower or the next cell into which the MRS is to enter cannot be predicted correctly when the movement of the MRS is predicted, the scheme provided by the embodiment of the invention can modify incorrect prediction information by verifying the cell into which the MRS is actually switched and the predicted target cell, and can improve the accuracy of predicting the next cell into which the MRS is to enter.

An embodiment of the present invention provides a device for predicting a target cell, where the device may be an MRS or a mobility predictor, and as shown in fig. 2, the device includes: a movement learning unit 201, a movement prediction execution unit 202, and a movement verification unit 203.

A mobile learning unit 201, configured to obtain a movement rule of the mobile relay station MRS;

a movement prediction execution unit 202, configured to predict a target cell into which the MRS will enter according to the acquired movement rule of the MRS, a cell in which the MRS is currently located, and information of a predetermined number of cells through which the MRS is switched;

and a mobile verification unit 203, configured to correct or reacquire a movement rule of the MRS when a cell into which the MRS is actually handed over is inconsistent with the predicted target cell.

The embodiment of the invention provides a device for predicting a target cell, which is characterized in that a mobile learning unit is used for acquiring a movement rule of a Mobile Relay Station (MRS), then a prediction execution unit is moved for predicting the target cell to which the MRS will enter according to the acquired movement rule of the MRS, the cell in which the MRS is currently located and the information of a preset number of cells switched by the MRS, and when the cell actually switched by the MRS to enter is inconsistent with the predicted target cell, a movement verification unit corrects or acquires the movement rule of the MRS again. Compared with the prior art in which the prediction accuracy is lower or the next cell into which the MRS is to enter cannot be predicted correctly when the movement of the MRS is predicted, the scheme provided by the embodiment of the invention can improve the accuracy of predicting the next cell into which the MRS is to enter.

Example 2

An embodiment of the present invention provides a method for predicting a target cell, as shown in fig. 3, the method includes:

step 301, acquiring a movement rule of a mobile relay station MRS;

Specifically, the movement rule of the MRS is obtained according to all the handover record information sequentially stored in the MRS, where the handover record information includes each cell that the MRS has been handed over to and the residence time of the MRS in each cell. As shown in fig. 4, each circle represents a cell, a cell in the embodiment of the present invention specifically refers to a base station in the cell, the numbers above the circles represent the sequence of handover records, the left number of "/" in the circle is a cell identifier, the right number of "/" in the circle represents the residence time of the MRS in the cell, for example, the cell into which the first handover of the MRS enters is represented by 1/60 in the circle, which represents that the MRS resides in the cell identified by 1 for 60 minutes.

The method for acquiring the MRS movement rule specifically comprises the following substeps:

step 3010, calculate the average value of the residence time according to the residence time of MRS in each cell in all the handover record information sequentially stored in the MRS;

calculating the average value of the residence time length according to the value Tt (Tr (1) + Tr (2) + … + Tr (i) + … Tr (N))/N, wherein Tr (i) represents the residence time length of the ith resident cell, the ith resident cell can be represented by C (i), Tt represents the average value of the residence time length, N is the effective number of samples collected in the current switching history information, and the value of N is [1, Nmax ], namely if the current number of samples is more than Nmax, the latest Nmax sample values are taken for calculation. For example, in fig. 4, N is 29, and the calculated initial Tt is Tt ≈ 6 (minutes) as the average of the 29 cell camping periods in the figure.

Step 3011, determining a candidate home cell according to the average value of the calculated residence time, where the candidate home cell is used to identify a home mobile ring;

the home cell is the cell accessed by the MRS berthing at the bus main station, is the cell with the longest residence time of the MRS, and can obtain a home mobile ring according to the home cell, namely the MRS follows the vehicle to start from the home cell and finally berths at the home cell.

Specifically, the method for determining the candidate home cell is as follows:

when Tr (i) > Tt and Tr (i) > Trh, determining the cell C (i) corresponding to the Tr (i) as the candidate home cell;

wherein, tr (i) is a time duration of camping in a cell c (i), the cell c (i) is a cell through which the MRS is handed over, i is a natural number greater than and equal to 1, Tt is the calculated average value, Trh is a time duration of camping in a candidate home cell of the MRS, and Tt is Trh at an initial time.

When the MRS moves and experiences new cells, the residence time length of the MRS in the cells is sequentially compared with Tt and Trh, and if the residence time length of the MRS in the cell C (i + n) is more than Tt and also more than Trh, the cell C (i + n) is determined to be a new candidate home cell.

As shown in fig. 4, the first recorded cell is a candidate home cell, and when two equal candidate home mobile rings are continuously identified according to the candidate home cell, the candidate home mobile ring is referred to as a home mobile ring, and the candidate home cell is referred to as a home cell.

Step 3012, obtain the home mobile ring according to the candidate home cell, and determine that the candidate home cell is a home cell;

the home mobile ring is a mobile ring formed by all cells sequentially experienced by the MRS in the course of following the movement of the vehicle, and is not simply a ring in the mobile network but a ring mapped in the mobile network after the MRS moves along with the vehicle operation line ring. For example, as shown in FIG. 5, 4- > 5- > 6- > 7- > 4 is a mobile loop and is not a home mobile loop as defined in the present invention, but 1- > 2- > 3- > 4- > 5- > 6- > 7- > 4- > 3- > 2- > 1 shown in FIG. 5 is a home mobile loop as defined in the present invention.

Further, as shown in fig. 6, obtaining the home moving ring according to the candidate home cell includes the following specific steps:

step 601, obtaining a first candidate attribution mobile ring and a second candidate attribution mobile ring according to the candidate attribution cell;

specifically, step 6010, sequentially querying, according to all handover record information sequentially stored in the MRS, identifiers of the cells into which the MRS is handed over after C (i), and obtaining a first cell C (i + M) which is the same as the identifier of C (i) and whose residence time in C (i) is greater than Tt;

as shown in fig. 4, the 1 st cell in the record is a candidate home cell, the identification CID (1) of the candidate home cell is 1, and then the identification of the home mobile ring is performed based on C1. When the 3 rd cell in the record is inquired to have the same identification as the 1 st cell in the record, i.e. CID (3) ═ 1.

Here, since it is required to specify that the dwell time of the candidate home cell is longer than the average value of the calculated dwell times, the 1 st cell, the 2 nd cell, and the 3 rd cell in fig. 4, i.e., 1- > 2- > 1, are not desired candidate home mobile rings, and the identification of the mobile rings is continued.

Step 6011, obtaining a first candidate home mobile ring according to the obtained first cell, where the first candidate home mobile ring is { C (i), (i +1), C (i +2), and … C (i + M) };

for example, if it is found that the identifier of the 15 th cell in the record is the same as the identifier of the 1 st cell in the record, that is, CID (15) is 1, and the residence time duration Tt (15) of C (15) is 15 minutes, which is greater than the average value of the calculated residence time durations, then the first candidate home mobile ring is obtained, which is MC1 ═ { C (1), C (2), C (3), … C (15) }.

Step 6012, continue to query each cell into which the MRS is handed over after the C (i + M), obtain a second cell C (i + N) which is the same as the identity of the C (i) and the identity of the C (i + M) and has a dwell time greater than Tt at the C (i + M);

for example, the identity of the 29 th cell in the record is queried to be the same as the identity of the 1 st and 15 th cells in the record.

Step 6013, according to the obtained second cell, a second candidate home mobile ring is obtained, where the second candidate home mobile ring is { C (i + M), C (i + M +1), C (i + M +2), … C (i + M + N) }.

For example, if the dwell period Tt (29) of C (29) is 15 minutes > 6 minutes, where 6 minutes is the average of the calculated dwell periods, then the second candidate home mobile ring is obtained as MC2 ═ C (15), C (16), C (17), … C (29).

Step 602, determining whether the first candidate home mobile ring and the second candidate home mobile ring are the same;

specifically, whether L { MC1} and L { MC2} are equal is judged, wherein L { MC1} represents the number of cells included in the first candidate home mobile ring, and L { MC2} represents the number of cells included in the second candidate home mobile ring;

when L { MC1} is not equal to L { MC2}, then the first candidate home mobile ring and the second candidate home mobile ring are not the same; at this time, a new candidate attribution mobile ring needs to be obtained again according to the method for obtaining the candidate attribution mobile ring;

when L { MC1} is equal to L { MC2}, sequentially comparing whether the cell identifications at the positions corresponding to MC1 and MC2 are consistent; comparing the MC1 with the 1 st cell of the MC2, wherein the MC1 is not the same as the MC2 as long as the identity of any one of the MC1 and the MC2 is not the same; when the identities of all cells in MC1 and MC2 are the same, then MC1 is the same as MC 2.

Step 603, when the first candidate home mobile ring is different from the second candidate home mobile ring, acquiring a new candidate home mobile ring again according to the method for acquiring a candidate home mobile ring;

at this time, step 6010 to step 6013 are executed to reacquire a new candidate home mobile ring;

step 604, when the first candidate home mobile ring and the second candidate home mobile ring are the same, determining that the home mobile ring is the first candidate home mobile ring or the second candidate home mobile ring, and determining that the candidate home cell is a home cell;

as shown in fig. 4, the determined home mobile ring is MCh ═ { C (1), C (2), C (3), C (4), C (5), C (6), C (7), C (4), C (3), C (2), C (1) }, where C (1) is the home cell.

After learning the movement rule of the MRS according to all the handover record information sequentially stored in the MRS, the next cell to which the MRS will enter is predicted according to the learned movement rule.

Step 302, predicting a target cell to which the MRS will enter according to the acquired MRS movement rule, the cell in which the MRS is currently located and the information of a preset number of cells switched by the MRS;

further, the predetermined number of cells may specifically be cells through which the MRS moves by one period following the vehicle, where one period refers to that the MRS starts from a home cell and returns to the home cell, and the target cell into which the MRS is predicted to enter may adopt two modes, one mode is a basic prediction method, and the other mode is an extended prediction method.

Specifically, as shown in fig. 7, the basic prediction method:

step 701, in the home mobile ring, calculating the number J of cells having the same identifier as c (w), where c (w) is the cell where the MRS is currently located;

and the cell in the home mobile ring, which has the same identifier as the cell in which the MRS is currently located, is called a matching cell of the cell in which the MRS is currently located. Information on whether the home mobile ring is a matching cell of the cell where the MRS is currently located may be stored by an array l (i), where i represents a location of the cell on the home mobile ring, and l (i) is set to 1 in the corresponding location if the cell is a matching cell, and l (i) is set to 0 in the corresponding location if the cell is not a matching cell. Thus, the number J of cells having the same identity as that of c (w) can be obtained by counting 1 s in the array l (i).

Step 702, when J is equal to 0, setting MC (W +1) as NULL, where MC (W +1) is a target cell predicted to be entered by the MRS;

for example, when the identifier of c (W) is 8, there is no cell identified as 8 in the determined home mobile ring, which means that the c (W) cell is not in the determined home mobile ring, and therefore, no effective prediction can be made, MC (W +1) may be set to NULL, where MC (W +1) is the predicted target cell into which the MRS will enter.

Step 703, predicting MC (W +1) as a target cell to which the MRS will enter when J is 1, where MC (W +1) is a next cell of MC (W) in the home mobile ring, and MC (W) is a cell indicated in the home mobile ring with the same identity as c (W);

for example, when the identifier of c (w) is 5, and only the identifier of 7 th cell is 5 in the determined home mobile ring, it may be directly predicted that the 8 th cell in the home mobile ring is the target cell into which the MRS will enter, that is, the cell identified as 6 in the home mobile ring.

Step 704, when J > 1, respectively calculating the number K of the previous cell identifier of the J cells in the home mobile ring, the number K of the cells having the same identifier as that of the C (W-1);

for example, when the identifier of c (w) is 2, a total of four cells in the determined home mobile ring is 2, so that the target cell to which the MRS is going to enter cannot be directly determined, and it is necessary to query whether the identifier of the previous cell of the four cells identified by 2 is the same as the identifier of the cell that the MRS has just handed over, if the identifier of the cell that the MRS has just handed over is 1, at this time, in the determined home mobile ring, the number of cells whose identifier is 1 is the previous cell of the cell identified by 2 is 3 in total, and at this time, K is 3.

Step 705, when K is 1, predicting that MC (W +1) is a target cell into which the MRS will enter, wherein the identity of C (W-1) is the same as the identity of MC (W-1) in the home mobile ring;

for example, when the identifier of C (w) is 2, if the identifier of the cell that the MRS has just switched is 1, assuming that a new home mobile ring is { C (1), C (2), C (3), C (2), C (4), C (2) }, it can be obtained according to step 704 that K is 1, so that C (3) is the target cell into which the MRS will enter.

Step 706, when K is greater than 1, continuing to calculate according to the method of J greater than 1 until predicting the target cell that the MRS will enter;

further, when K is larger than 1, continuing to inquire a cell with the same identification as that of C (W-2) in the home mobile ring, and if a cell with the same identification as that of C (W-2) is inquired in the home mobile ring, assuming that MC (W-2) is used, predicting MC (W +1) in the home mobile ring as a target cell into which the MRS is going to enter; if the identities of two or more cells are the same as the identity of C (W-2) in the home mobile ring, the cell with the identity of C (W-3) needs to be continuously queried in the home mobile ring until the target cell into which the MRS is going to enter can be predicted.

And step 707, when C [ W- (W-1) ] cells are queried and the identities of G cells in the home mobile ring are the same as the identity of C [ W- (W-1) ], predicting that a next cell of any one of the G cells is a target cell to which the MRS will enter.

The basic prediction method is applicable not only to initial prediction but also to repetitive prediction.

Further, a simple method may also be used to predict the target cell into which the MRS will enter, i.e. the extended prediction method:

when the identity of the cell where the MRS is currently located is the same as the identity of the target cell that the MRS is predicted to enter last time, that is, the last prediction is successful, that is, when the identity of c (W) is the same as the identity of MC (W), the target cell that the MRS will enter can be directly predicted to be MC (W +1), where c (W) is the cell where the MRS is currently located, MC (W) is the cell that the MRS will enter last time, and MC (W +1) is the next cell of MC (W) in the home mobile ring;

when the latest prediction fails, the extended prediction method cannot be used for prediction any more, and the basic prediction method can be used for predicting the target cell into which the MRS will enter.

It should be noted that the target cell to which the MRS is predicted to enter may be an MRS prediction, or may be an independent device movement prediction server that predicts the target cell to which the MRS is to enter, where the movement prediction server receives a prediction request sent by the MRS, and the prediction request carries a history of the latest handover, such as a residence time of the MRS in a previous cell, where the previous cell refers to a previous cell of the current cell, an identifier for switching out the previous cell and switching into the current cell, and a time for switching the MRS into the current cell. Then the mobile prediction server completes the prediction according to the received prediction request message and returns the prediction to the MRS through a prediction request response message, wherein the prediction request response message comprises a target cell to which the predicted MRS is to enter and the estimated residence time in the coding cell; or,

specifically, after MRS switches cells, an access controller collects information of each switching, and then sends the information to a mobile prediction server through a mobile prediction request, the mobile prediction server stores the switching information of the MRS, the mobile prediction server performs mobile prediction according to current cell information contained in the mobile prediction request message, and then returns a prediction result to the RNC through a mobile prediction response.

Step 303, the MRS sends a resource reservation request to the target cell, where the resource reservation request includes the number of reserved resources needed by the MRS, the earliest time of using the reserved resources, and the duration of using the reserved resources, and is used to instruct the target cell to allocate the reserved resources for the MRS;

it should be noted that, the access controller may also send the resource reservation request to the target cell, and the access controller receives the movement prediction response sent by the movement prediction server and sends the movement prediction response to the target cell.

Step 304, the target cell receives a resource reservation request sent by the MRS, where the resource reservation request includes the number of reserved resources needed to be used by the MRS, the earliest time of using the reserved resources, and the duration of using the reserved resources;

305, the target cell allocates reserved resources for the MRS connection establishment according to the resource reservation request;

specifically, the base station of the target cell allocates the resource required for the MRS to the MRS according to the current resource usage and the received resource reservation request, and sets the time and duration during which the resource required for the MRS can be used.

Step 306, the target cell sends a reserved resource allocation response to the MRS to indicate that the MRS successfully allocates reserved resources;

after receiving the response of allocating reserved resources, the MRS may switch in the target cell at the earliest time of using the reserved resources, establish a connection using the reserved resources, and also switch in other cells.

Step 307, after the MRS enters a new cell, determining whether the cell where the MRS newly enters is the same as the target cell;

when the MRS moves along with the vehicle and is switched to enter a new cell, it needs to be determined whether the cell where the MRS newly enters is the same as the target cell, because the MRS may enter the predicted target cell, or temporarily enter another cell due to a change in the vehicle operation line, or cause a prediction error due to a local random interference on the mobile network during the operation, so that the new cell where the MRS is switched to enter is different from the predicted cell.

Step 308, when the cell newly entered by the MRS is the same as the target cell, establishing a connection using the reserved resource;

when the MRS newly entered cell is the same as the target cell, it is indicated that the MRS handover enters the cell for which the resources are reserved. It should be noted that, when the MRS makes a handover decision, it preferentially selects a cell for which resources are reserved, and if the cell is not in the neighbor list accessible to the MRS, the MRS selects a new handover cell according to a handover criterion and initiates a handover procedure.

When the cell in which the MRS newly enters and the predicted target cell are the same cell, the connection can be established by using the resources reserved in advance, and the reserved resources meet the quantity of the resources required by the MRS, so that compared with the prior art that the resources are fixedly reserved for the MRS in each cell, the scheme provided by the embodiment of the invention does not cause resource waste, improves the resource reservation accuracy and improves the resource use efficiency.

Step 309, when the cell that the MRS newly enters is different from the target cell, sending a resource reservation cancellation request to the target cell through the cell that the MRS newly enters, so that the target cell immediately recovers the reserved resource or according to B ═ B₀-B₀*[Tr(i)-T(i)]/Tr (i) gradually reducing the number of resources of the reserved resources;

wherein B is the gradually reduced resource quantity of the reserved resources, B₀For the resource quantity of the reserved resource, Tr (i) is the use duration of the reserved resource, and T (i) is the time which has elapsed from the earliest time of the use of the required resource;

specifically, MRS sends a resource reservation cancellation request to a cell that MRS newly enters, and then after receiving the resource reservation cancellation request, the cell that MRS newly enters sends a resource reservation cancellation request to a target cell, so that the target cell recovers the reserved resources. Compared with the prior art that when MRS is changed because of network change or vehicle operation change, the MRS does not enter the cell reserved with resources and does not recover the resources, the scheme provided by the embodiment of the invention can automatically recover the reserved resources when MRS does not enter the predicted cell, thereby improving the use efficiency of the resources.

Step 310, the target cell recovers reserved resources;

any of the following may be employed:

the first method is as follows: when receiving a resource reservation cancellation request sent by a newly entered cell of MRS, immediately recovering all reserved resources;

the first method is as follows: gradually decreasing the number of resources of the reserved resource when the MRS does not arrive at the earliest time of use of the reserved resource.

In particular, according to B ═ B₀-B₀*[Tr(i)-T(i)]/Tr (i) gradually decreasing the number of resources of the reserved resource, wherein B is the gradually decreasing number of resources of the reserved resource, B₀Tr (i) is the using time length of the reserved resource, and T (i) is the time which has passed from the earliest time of the required resource using. When it is time for the MRS to use the reserved resources, the reserved resources have been fully reclaimed.

And 311, when the cell switched by the MRS is inconsistent with the predicted target cell, correcting or reacquiring the movement rule of the MRS.

It should be noted that if the vehicle operation changes temporarily, or the network is unstable, etc., all cause a mobile prediction error, so it is important to find and correct the error of the mobile rule in time to improve the prediction accuracy, where the mobile rule is to determine the home cell and the home mobile ring according to the handover record of the MRS. Due to the complexity and randomness of the network, the cost of requiring the complete correct mobile prediction is huge, and in addition, the mobile rule is difficult to judge incorrectly due to one error, so that the complete correct meaning of the identified home mobile ring is ensured to be not large, but the incorrect prediction is meaningless, and the resource waste is caused. Therefore, it is necessary to control errors, and the solution provided by the embodiment of the present invention provides a three-level movement rule checking mechanism to find and correct errors as soon as possible.

The effectiveness of motion prediction is determined by two factors: one is the accuracy in the spatial dimension and one is the accuracy in the temporal dimension. In the prediction of the MRS switching into the cell, the prediction is considered to be accurate only when the predictions at the two latitudes are correct. In the scheme provided by the embodiment of the present invention, the prediction accuracy of the spatial dimension is the prediction accuracy of the identifier of the predicted MRS to enter the target cell, and if the identifier of the predicted MRS to enter the target cell is consistent with the identifier of the cell actually entered by handover, the spatial dimension is considered to be accurate. In addition, according to the scheme provided by the embodiment of the invention, the prediction accuracy of the time dimension is the prediction accuracy of the residence time after the MRS is switched into the new cell.

Verifying the validity of the movement prediction, which can be divided into a local verification stage and an overall verification stage; when the MRS is switched into a new cell, local verification is needed, when the new cell switched into by the MRS is consistent with the cell which is predicted to be accessed by the MRS, the latest movement prediction is correct, local correction is not needed, when the new cell switched into by the MRS is inconsistent with the cell which is predicted to be accessed by the MRS, the latest movement prediction is wrong, and an error checking mechanism is started for checking.

When the MRS returns to the home cell, that is, after the prediction with one home mobile ring as the prediction period is finished, the overall verification is performed, at this time, according to the three-level mobility rule checking mechanism provided in the embodiment of the present invention, the new cell into which the MRS is switched and the cell into which the predicted MRS enters are checked in sequence, and the three-level mobility rule checking mechanism is described in detail below:

based on the fact that the mobile prediction performed by the home mobile ring is wrong on a plurality of cells in one prediction period, a first-level mobile rule checking mechanism can be adopted firstly:

according to α ═ N_OK/N_NCalculating the validity of the mobile rule;

wherein α is the validity of the mobile rule indicating the efficiency predicted accurately by the home mobile ring, N_OKFor the home mobile ring, the identity of MC (W +1) is the same as the identity of the cell actually entered by the MRS, and the residence time of MC (W +1) is the same as the number of cells where the MRS resides in the cell actually entered, MC (W +1) is the predicted next cell to be entered by the MRS, N_NThe number of the cells contained in the home mobile ring;

when α is less than α_tThen the home mobile ring is re-determined, wherein α_tIs the threshold value of validity of the mobile rule;

note that α_tThe setting is carried out according to the practical experience of workers when α is less than α_tWhen the mobile ring identification process is started, the mobile ring identification process is restarted, and a new home mobile ring is identified.

When α is more than α_tOr α ═ α_tAnd then, continuously predicting the next cell to be entered by the MRS according to the home mobile ring.

If the first-level motion rule checking mechanism is considered as a lateral prediction error, the second-level motion rule checking mechanism is considered as a longitudinal error. Such longitudinal errors cannot be found by examining the validity of the movement rules α and therefore cannot be corrected in time. Longitudinal errors, which occur consecutively for the prediction of the same cell in N prediction cycles. There are two main types of possible error types: 1) the home mobile loop is locally interfered randomly, so that spatial or temporal prediction errors are random; 2) the home mobile loop has relatively stable change in local space or time, that is, the actual switched-in cell is the same cell for multiple times, and the residence time lengths are consistent, at this time, a second-level mobile rule checking mechanism may be adopted:

calculating the number of continuous prediction errors when C (W) predicts MC (W +1) to which the MRS is going to enter in a preset number of cycles, wherein C (W) is a preset cell, and MC (W +1) is a predicted next cell to which the MRS is going to enter;

here, the predetermined number of cycles may be set according to actual conditions, and may be, for example, 5 prediction cycles.

When E is larger than Et, stopping predicting MC (W +1) which the MRS is going to enter at C (W), wherein E is the number of times of the continuous prediction errors, and Et is a continuous prediction error threshold value;

et can be set based on the actual experience of the worker.

When E < Et or E ═ Et, the next cell into which the MRS will enter is continuously predicted from the home mobile ring.

The predicted error can be introduced again for the same number of times Es continuously on the basis of the previous error;

when E is larger than Et, calculating the predicted errors continuously the same times when C (W) predicts the MC (W +1) to which the MRS enters in a preset number of cycles;

when Es is larger than Est, updating the cell at the W +1 th position in the attributive mobile ring into the MRS actual switching entering cell; in addition, it is also necessary to update the identifier of the cell at the W +1 th position in the home mobile ring to the identifier of the cell into which the MRS actually switches, and update the residence time of the MRS at the W +1 th position in the home mobile ring to the residence time of the cell into which the MRS actually switches.

Due to the complexity of the network, other random situations may occur to cause inaccurate prediction, and such random prediction errors are difficult to find and correct through the foregoing two mechanisms, so that the manner of not correcting the home mobile ring can be controlled by a third level of error: and directly abandoning the application of the result after finding errors, namely after the MRS is switched into a new cell and the MRS finds that a predicted cell is inconsistent with an actually switched cell, initiating a resource recovery request to the predicted cell through the actually switched cell so as to enable the predicted cell to start the recovery of resources immediately and avoid wasting the resources.

It should be noted that the execution sequence of step 311 is not strictly fixed, and when the MRS newly enters a cell, the consistency between the cell where the MRS newly enters and the cell where the MRS is predicted to enter will be verified, that is, after step 307 is executed, step 311 is executed.

The prediction method provided by the scheme provided by the embodiment of the invention can lead the user terminal of MRS needing relaying to search the predicted target cell in advance and synchronize after predicting the next cut-in cell, and can also lead the user terminal to establish connection with the predicted switching target in advance before triggering the switching threshold.

The embodiment of the invention provides a method for predicting a target cell, which predicts a target cell into which an MRS is about to enter by acquiring a movement rule of the MRS, and corrects or acquires the movement rule of the MRS again when the cell into which the MRS is switched is inconsistent with the predicted target cell. Compared with the prior art that the prediction accuracy is lower or the next cell into which the MRS is to enter cannot be predicted correctly when the movement of the MRS is predicted, the scheme provided by the embodiment of the invention can improve the accuracy of predicting the next cell into which the MRS is to enter, reserve resources for the predicted target cell, improve the resource reservation accuracy and improve the resource utilization efficiency.

An embodiment of the present invention provides a device for predicting a target cell, where the device may be an MRS (mobile relay station) or a mobile prediction server, and as shown in fig. 8, the device includes: a movement learning unit 801, a movement prediction execution unit 802, a first transmission unit 803, a judgment unit 804, a creation unit 805, a second transmission unit 806, a movement verification unit 807, a first movement rule calculation unit 808, a first movement rule correction unit 809, a second movement rule calculation unit 810, a second movement rule correction unit 811, a third movement rule calculation unit 812, a third movement rule correction unit 813.

A mobile learning unit 801, configured to acquire a movement rule of the mobile relay station MRS;

a movement prediction execution unit 802 predicts a target cell into which the MRS will enter according to the acquired movement rule of the MRS, the cell in which the MRS is currently located, and information of a predetermined number of cells through which the MRS is switched;

a first sending unit 803, configured to send a resource reservation request to the target cell, where the resource reservation request includes the number of reserved resources required by the MRS to be used, the earliest time of using the reserved resources, and a duration of using the reserved resources, and is used to instruct the target cell to allocate the reserved resources for the MRS;

it should be noted that, by notifying the target cell in advance to reserve appropriate resources for the MRS, the resource reservation accuracy can be improved, and the resource utilization rate can be improved.

After receiving the resource reservation response sent by the target cell, the MRS indicates that the target cell has completed the reservation of resources for the MRS, and the MRS can switch into the target cell.

After the MRS enters a new cell, a determining unit 804 determines whether the cell where the MRS newly enters is the same as the target cell;

when the MRS newly entered cell is the same as the target cell, an establishing unit 805 establishing a connection using the reserved resource; it should be noted that, when the MRS makes a handover decision, it preferentially selects a cell for which resources are reserved, and if the cell is not in the neighbor list accessible to the MRS, the MRS selects a new handover cell according to a handover criterion and initiates a handover procedure.

When the MRS newly entered cell is not in phase with the target cellMeanwhile, a second sending unit 806 is configured to send a resource reservation cancellation request to the target cell through the cell that the MRS newly enters, so that the target cell immediately recovers the reserved resource or according to B-B₀-B₀*[Tr(i)-T(i)]/Tr (i) gradually reducing the number of resources of the reserved resources;

wherein B is the gradually reduced resource quantity of the reserved resources, B₀Tr (i) is the duration of the reserved resource, and T (i) is the time elapsed from the earliest time of the required resource usage

A mobility verification unit 807 configured to correct or reacquire a mobility rule of the MRS when the cell into which the MRS is handed over does not coincide with the predicted target cell.

When MRS is switched into a new cell, the verification of the validity of the mobile rule is started, and the scheme provided by the embodiment of the invention provides a three-level mobile rule checking mechanism to discover errors and correct errors as soon as possible.

It should be noted that the effectiveness of the motion prediction is determined by two factors: one is the accuracy in the spatial dimension and one is the accuracy in the temporal dimension. In the prediction of the MRS switching into the cell, the prediction is considered to be accurate only when the predictions at the two latitudes are correct. In the scheme provided by the embodiment of the present invention, the prediction accuracy of the spatial dimension is the prediction accuracy of the identifier of the predicted MRS to enter the target cell, and if the identifier of the predicted MRS to enter the target cell is consistent with the identifier of the cell actually entered by handover, the spatial dimension is considered to be accurate. In addition, according to the scheme provided by the embodiment of the invention, the prediction accuracy of the time dimension is the prediction accuracy of the residence time after the MRS is switched into the new cell. According to the three-level mobility rule checking mechanism provided by the embodiment of the present invention, a new cell into which an MRS is switched and a predicted cell into which the MRS enters are checked in sequence, and the three-level mobility rule checking mechanism is specifically described below:

based on the fact that the mobile prediction performed according to the home mobile ring is wrong in a plurality of cells in one prediction period, a first-level mobile rule checking mechanism, namely, a first mobile rule calculating unit 808 for calculating the first mobile rule according to α -N_0K/N_NCalculating the validity of the mobile rule;

wherein α is the validity of the mobile rule, which indicates the effective rate of the accurate prediction according to the home mobile ring in a prediction period, N_OKFor the home mobile ring, the identity of MC (W +1) is the same as the identity of the cell actually entered by the MRS, and the residence time of MC (W +1) is the same as the number of cells where the MRS resides in the cell actually entered, MC (W +1) is the predicted next cell to be entered by the MRS, N_NThe number of the cells contained in the home mobile ring;

when α is less than α_tThen, the first movement rule correction unit 809 redetermines the home movement ring, wherein α_tIs the threshold value of validity of the mobile rule;

note that α_tThe setting is carried out according to the practical experience of workers when α is less than α_tWhen α > α indicates that the accuracy of the prediction based on the home mobile ring is low and cannot be used for the movement prediction, the home mobile ring identification process is restarted to identify a new home mobile ring_tOr α ═ α_tAnd then, continuously predicting the next cell to be entered by the MRS according to the home mobile ring.

If the first-level motion rule checking mechanism is considered as a lateral prediction error, the second-level motion rule checking mechanism is considered as a longitudinal error. Such longitudinal errors cannot be found by examining the validity of the movement rules α and therefore cannot be corrected in time. At this time, a second-level movement rule checking mechanism may be adopted for verification and correction: a second movement rule calculating unit 810, configured to calculate, in a predetermined number of cycles, the number of consecutive prediction errors when c (W) predicts MC (W +1) to which the MRS is going to enter, where c (W) is a preset cell and MC (W +1) is a predicted next cell to which the MRS is going to enter;

a second movement rule correcting unit 811, configured to stop predicting MC (W +1) into which the MRS will enter at c (W) when E > Et, where E is the number of consecutive prediction errors and Et is a consecutive prediction error threshold value;

a third movement rule calculation unit 812 for calculating, when E > Et, the number of consecutive predicted errors the same number of times when c (W) predicts MC (W +1) into which the MRS is going to enter, for a predetermined number of cycles;

a third movement rule correcting unit 813, configured to update the cell at the W-th position in the home mobile ring to the MRS actual handover entry cell when Es > Es t.

As further shown in fig. 9, the mobile learning unit 801 includes: a first mobile learning subunit 901, a calculation module 902, a first determination module 903, a second mobile learning subunit 904, an obtaining module 905, a query obtaining submodule 906, an obtaining submodule 907, a judgment module 908, and a second determination module 909.

When acquiring the movement rule of the MRS, the first mobile learning subunit 901 is configured to determine a candidate home cell according to all handover record information sequentially stored in the MRS, where the candidate home cell is used to identify a home mobile ring;

the home cell is a cell accessed by the MRS berthing at a bus master station, namely the MRS following vehicle starts from the home cell and finally berths at the home cell, and is a cell with the longest MRS residence time, and a home mobile ring can be obtained according to the home cell;

specifically, the calculating module 902 in the first mobile learning subunit 901 is configured to calculate an average value of residence time durations of the MRSs in each cell according to residence time durations of the MRSs in all the handover record information sequentially stored in the MRSs;

the MRS is a relay station mounted on a vehicle or a movable carrier for receiving and forwarding a radio signal. The MRS records switching information, the switching information comprises the identification and the residence time of each cell switched by the MRS, and the history information is reserved.

Specifically, the average value of the residence time length is calculated according to Tt ═ Tr (1) + Tr (2) + … + Tr (i) + … Tr (N))/N, wherein Tr (i) represents the residence time length of the cell residing at the ith, the cell residing at the ith can be represented by c (i), and Tt represents the average value of the residence time length, it should be noted that N is the number of valid samples collected in the current switching history information, and the value of N is [1, Nmax ], that is, if the current number of samples is more than Nmax, the latest Nmax sample values are taken for calculation.

A first determining module 903, configured to determine, when tr (i) > Tt and tr (i) > Trh, that tr (i) is the candidate home cell, where tr (i) is a cell residence time duration at c (i), c (i) is an ith cell through which the MRS is handed over, i is a natural number greater than or equal to 1, Tt is the calculated average value, and Trh is a residence time duration of the MRS in the candidate home cell.

And sequentially continuing to compare the residence time length of the cell switched by the MRS after C (i) with Tt and Trh, and if the residence time length of the MRS in the cell of C (i + n) is more than Tt and also more than Trh, determining that C (i + n) is a new candidate home cell.

And according to the determined candidate home cell, the second mobile learning subunit 904 is configured to obtain the home mobile ring and determine that the candidate home cell is a home cell.

The home mobile ring is a mobile ring formed by all cells sequentially experienced in the moving process of the MRS following the vehicle, and the home mobile ring is not a simple ring in a mobile network but a ring mapped in the mobile network after the MRS moves along with a vehicle operation line ring;

specifically, the obtaining module 905 is configured to obtain a first candidate home mobile ring and a second candidate home mobile ring according to the candidate home cell;

the query obtaining sub-module 906 in the obtaining module 905 is configured to sequentially query, according to all the handover record information sequentially stored in the MRS, the cells into which the MRS is handed over after C (i), and obtain a first cell C (i + M) which has the same identifier as C (i) and whose residence time in C (i) is greater than Tt;

an obtaining sub-module 907, configured to obtain a first candidate home mobile ring according to the obtained first cell, where the first candidate home mobile ring is { C (i), (i +1), C (i +2), and … C (i + M) };

the query obtaining sub-module 906 continues to query the cells into which the MRS is handed over after the C (i + M), obtaining a second cell C (i + N) which is the same as the identity of the C (i) and the identity of the C (i + M) and whose dwell time at the C (i + M) is greater than Tt; according to the obtained second cell, the obtaining sub-module 907 obtains a second candidate home mobile ring, where the second candidate home mobile ring is { C (i + M), C (i + M +1), C (i + M +2), … C (i + M + N) };

then, the determining module 908 determines whether the first candidate home mobile ring and the second candidate home mobile ring are the same;

further, determining whether L { MC1} and L { MC2} are equal, wherein L { MC1} represents the number of cells included in the first candidate home mobile ring, and L { MC2} represents the number of cells included in the second candidate home mobile ring;

When L { MC1} is not equal to L { MC2}, a new candidate home mobile ring needs to be acquired again in the manner of acquiring a candidate home mobile ring.

A second determining module 909, configured to determine that the home mobile ring is the first candidate home mobile ring or the second candidate home mobile ring, and determine that the candidate home cell is a home cell, when the first candidate home mobile ring and the second candidate home mobile ring are the same.

Further, the movement prediction performing unit 802 may predict the target cell into which the MRS will enter, by any of the following methods:

the first method is as follows: as shown in fig. 10, the movement prediction execution unit 802 includes: a first calculation module 1001, a setting module 1002, a first prediction module 1003, a second calculation module 1004, a second prediction module 1005, and a third prediction module 1006.

In the home mobile ring, a first calculating module 1001 calculates the number J of cells having the same identity as that of c (w), where c (w) is the cell where the MRS is currently located;

and the cell in the home mobile ring, which has the same identifier as the cell in which the MRS is currently located, is called a matching cell of the cell in which the MRS is currently located. The information on whether the home mobile ring is a matching cell of the cell where the MRS is currently located may be stored by an array l (i), where i represents the location of the cell on the home mobile ring, and l (i) is set to 1 in the corresponding location if the cell is a matching cell, and l (i) is set to 0 in the corresponding location if the cell is not a matching cell. Thus, the number J of cells having the same identity as that of c (w) can be obtained by counting 1 s in the array l (i).

When J is 0, the setting module 1002 sets MC (W +1) to NULL, where MC (W +1) is a target cell that the MRS is predicted to enter;

when J is 1, the first predicting module 1003 predicting that MC (W +1) is a target cell to which the MRS will enter, where MC (W +1) is a next cell of MC (W) in the home mobile ring, and MC (W) is a cell represented in the home mobile ring with the same identity as c (W);

when J > 1, the second calculating module 1004 respectively calculates the number K of the previous cell identifier of the J cells in the home mobile ring, which is the same as the identifier of C (W-1);

when K is 1, the second prediction module 1005 predicts MC (W +1) as a target cell to which the MRS will enter, wherein the identity of C (W-1) is the same as the identity of MC (W-1) in the home mobile ring;

further, when K is larger than 1, continuing to calculate according to the method of J is larger than 1 until predicting the target cell which the MRS is going to enter;

a third predicting module 1006, configured to predict, when the identifier of G cells in the home mobile ring is the same as the identifier of C [ W- (W-1) ], a next cell of any one of the G cells to be a target cell into which the MRS is to enter.

The method shown in fig. 10 is a basic prediction method, and further, the embodiment of the present invention may also use a simple method to predict the target cell into which the MRS will enter, that is, an extended prediction method:

specifically, the movement prediction performing unit 804 is configured to predict that the target cell to which the MRS will enter is MC (W +1) when the identity of c (W) is the same as the identity of MC (W), where c (W) is the cell in which the MRS is currently located, MC (W) is the cell to which the MRS will enter which is predicted the last time, and MC (W +1) is the next cell in the home mobile ring MC (W).

The embodiment of the invention provides a device for predicting a target cell, which determines a candidate home cell and a home mobile ring according to all switching record information sequentially stored in an MRS through a mobile rule learning unit, and a mobile prediction execution unit predicts the target cell into which the MRS is going to enter. Compared with the prior art that the prediction accuracy is lower or the next cell into which the MRS is to enter cannot be predicted correctly when the movement of the MRS is predicted, the scheme provided by the embodiment of the invention can improve the accuracy of predicting the next cell into which the MRS is to enter, reserve resources for the predicted target cell, improve the resource reservation accuracy and improve the resource utilization efficiency.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A method of predicting a target cell, comprising:

acquiring a movement rule of a Mobile Relay Station (MRS); the MRS movement rule is a home cell and a home mobile ring determined according to the MRS switching record information;

and when the cell switched into by the MRS is inconsistent with the predicted target cell, correcting or reacquiring the movement rule of the MRS.

2. The method of predicting the target cell according to claim 1, wherein the obtaining the movement rule of the mobile relay station MRS comprises:

determining a candidate home cell according to all switching record information sequentially stored in the MRS, wherein the candidate home cell is used for identifying a home mobile ring, and the switching record information comprises cells switched by the MRS and the residence time of the MRS in each cell;

and obtaining the attribution moving ring according to the candidate attribution cell, and determining the candidate attribution cell as an attribution cell.

3. The method of predicting a target cell according to claim 2, wherein the determining a candidate home cell according to all handover record information sequentially stored in the MRS comprises:

calculating the average value of the residence time according to the residence time of the MRS in each cell in all the switching record information sequentially stored in the MRS;

when Tr (i) > Tt and Tr (i) > Trh, determining the corresponding cell C (i) as the candidate home cell, wherein Tr (i) is the residence time length of the cell at C (i), C (i) is the ith cell through which the MRS is switched, i is a natural number which is greater than or equal to 1, Tt is the calculated average value, and Trh is the residence time length of the MRS at the candidate home cell.

4. The method of claim 2, wherein obtaining the home mobility ring according to the candidate home cell and determining the candidate home cell as a home cell comprises:

obtaining a first candidate attribution mobile ring and a second candidate attribution mobile ring according to the candidate attribution cell;

determining whether the first candidate home mobile ring and the second candidate home mobile ring are the same;

when the first candidate home mobile ring and the second candidate home mobile ring are the same, determining that the home mobile ring is the first candidate home mobile ring or the second candidate home mobile ring, and determining that the candidate home cell is a home cell.

5. The method of claim 4, wherein obtaining the first candidate home mobile ring and the second candidate home mobile ring according to the candidate home cell comprises:

sequentially inquiring each cell which is switched into by the MRS after C (i) according to all switching record information sequentially stored in the MRS, and obtaining a first cell C (i + M) which has the same identifier with C (i) and the residence time of C (i) is more than Tt;

obtaining a first candidate home mobile ring according to the obtained first cell, where the first candidate home mobile ring is { C (i), C (i +1), C (i +2), … C (i + M) };

according to the method for obtaining the first candidate home mobile ring, continuously querying each cell into which the MRS is switched after the C (i + M), to obtain a second candidate home mobile ring, where the second candidate home mobile ring is { C (i + M), C (i + M +1), C (i + M +2), … C (i + M + N) }.

6. The method according to claim 1, wherein the predicting the target cell into which the MRS will enter according to the obtained movement rule of the MRS, the cell in which the MRS is currently located, and the information of the predetermined number of cells through which the MRS is handed over comprises:

in the home mobile ring, calculating the number J of cells with the same identification as that of C (W), wherein C (W) is the cell in which the MRS is currently located;

setting MC (W +1) as NULL when J is 0, wherein MC (W +1) is a target cell predicted to be entered by the MRS;

predicting MC (W +1) as a target cell to be entered by the MRS when J is 1, wherein MC (W +1) is a next cell of MC (W) in the home mobile ring, and MC (W) is a cell represented in the home mobile ring with the same identification as that of C (W);

when J is larger than 1, respectively calculating the number K of the previous cell in the attribution mobile ring of the J cells, which is the same as the number K of the cells of C (W-1); predicting MC (W +1) as a target cell to be entered by the MRS when K is 1, wherein the identity of C (W-1) is the same as that of MC (W-1) in the home mobile ring; when K is larger than 1, continuing to calculate according to the method that J is larger than 1 until a target cell which the MRS is going to enter is predicted; when the identities of G cells in the home mobile ring are the same as the identity of C [ W- (W-1) ], predicting a next cell of any one of the G cells to be a target cell into which the MRS is to enter.

7. The method according to claim 1, wherein the predicting the target cell into which the MRS will enter according to the obtained movement rule of the MRS, the cell in which the MRS is currently located, and the information of the predetermined number of cells through which the MRS is handed over comprises:

when the identity of c (W) is the same as the identity of MC (W), predicting that the target cell to which the MRS will enter is MC (W +1), where c (W) is the cell where the MRS is currently located, MC (W) is the cell to which the MRS will enter which is predicted the last time, and MC (W +1) is the next cell of MC (W) in the home mobile ring.

8. The method for predicting the target cell according to any of claims 1-7, further comprising, after predicting the target cell to which the MRS will enter:

sending a resource reservation request to the target cell, wherein the resource reservation request comprises the number of reserved resources required to be used by the MRS, the earliest using time of the reserved resources and the duration of using the reserved resources, and is used for indicating the target cell to allocate the reserved resources for the MRS;

after the MRS is switched into a new cell, judging whether the newly entered cell of the MRS is the same as the target cell;

when the MRS newly entered cell is the same as the target cell, using the reserved resources to establish connection;

when the MRS newly entered cell is different from the target cell, sending a resource reservation cancellation request to the target cell through the MRS newly entered cell so that the target cell can immediately recover the reserved resource or according to the condition that B is equal to B₀-B₀*[Tr(i)-T(i)]/Tr (i) gradually reducing the number of resources of the reserved resources;

wherein B is the gradually reduced resource quantity of the reserved resources, B₀Tr (i) is the using time length of the reserved resource, and T (i) is the time which has passed from the earliest time of the required resource using.

9. The method of predicting the target cell according to claim 1, wherein the correcting or reacquiring the movement rule of the MRS when the cell into which the MRS is handed over is inconsistent with the predicted target cell comprises:

according to α ═ N_OK/N_NAnd calculating the validity of the mobile rule, wherein α is the validity of the mobile rule, N_OKFor the home mobile ring, the identity of MC (W +1) is the same as the identity of the cell actually entered by the MRS, and the residence time of MC (W +1) is the same as the number of cells where the MRS resides in the cell actually entered, MC (W +1) is the predicted next cell to be entered by the MRS, N_NThe number of the cells contained in the home mobile ring;

when α<α_tThen the home mobile ring is re-determined, wherein α_tIs the mobile rule validity threshold.

10. The method of predicting the target cell according to claim 9, wherein the correcting or reacquiring the movement rule of the MRS when the cell into which the MRS is actually handed over does not coincide with the predicted target cell comprises:

and when Es is larger than Est, updating the cell at the W +1 th position in the attributive mobile ring into the actual switching entering cell of the MRS, wherein Es is the predicted error continuous same times, and Est is an error continuous same times threshold value.

11. An apparatus for predicting a target cell, comprising:

the mobile learning unit is used for acquiring a movement rule of the mobile relay station MRS; the MRS movement rule is a home cell and a home mobile ring determined according to the MRS switching record information;

and the mobile verification unit is used for correcting or reacquiring the mobile rule of the MRS when the cell into which the MRS is switched is inconsistent with the predicted target cell.

12. The apparatus for predicting a target cell according to claim 11, wherein the mobile learning unit comprises:

the first mobile learning subunit is used for determining a candidate home cell according to all the handover record information sequentially stored in the MRS, wherein the candidate home cell is used for identifying a home mobile ring;

and the second mobile learning subunit is used for acquiring the attribution mobile ring according to the candidate attribution cell and determining the candidate attribution cell as an attribution cell.

13. The apparatus for predicting a target cell of claim 12, wherein the first mobile learning subunit comprises:

the calculation module is used for calculating the average value of the residence time according to the residence time of the MRS in each cell in all the switching record information sequentially stored in the MRS;

a first determining module, configured to determine, when tr (i) > Tt and tr (i) > Trh, that tr (i) is the candidate home cell, where tr (i) is a cell residence time duration at c (i), c (i) is an ith cell through which the MRS is handed over, i is a natural number greater than or equal to 1, Tt is the calculated average value, and Trh is a residence time duration of the MRS in the candidate home cell.

14. The apparatus for predicting a target cell of claim 12, wherein the second mobile learning subunit comprises:

an obtaining module, configured to obtain a first candidate home mobile ring and a second candidate home mobile ring according to the candidate home cell;

a judging module, configured to judge whether the first candidate home mobile ring and the second candidate home mobile ring are the same;

a second determining module, configured to determine that the home mobile ring is the first candidate home mobile ring or the second candidate home mobile ring and determine that the candidate home cell is a home cell when the first candidate home mobile ring and the second candidate home mobile ring are the same.

15. The apparatus for predicting a target cell of claim 14, wherein the obtaining module comprises:

a query obtaining sub-module, configured to sequentially query, according to all handover record information sequentially stored in the MRS, cells into which the MRS is handed over after C (i), and obtain a first cell C (i + M) that has the same identifier as C (i) and whose dwell time in C (i) is greater than Tt;

an obtaining submodule, configured to obtain a first candidate home mobile ring according to the obtained first cell, where the first candidate home mobile ring is { C (i), C (i +1), C (i +2), and … C (i + M) };

the query obtaining sub-module is further configured to query, according to all handover record information sequentially stored in the MRS, each cell into which the MRS is handed over after the C (i + M), and obtain a second cell C (i + N) which has the same identity as the C (i) and the identity of the C (i + M) and whose dwell time at the C (i + M) is greater than Tt;

the obtaining sub-module is further configured to obtain a second candidate home mobile ring according to the obtained second cell, where the second candidate home mobile ring is { C (i + M), C (i + M +1), C (i + M +2), … C (i + M + N) }.

16. The apparatus for predicting a target cell according to claim 11, wherein the movement prediction performing unit comprises:

a first calculating module, configured to calculate, in the home mobile ring, the number J of cells having the same identity as that of c (w), where c (w) is a cell in which the MRS is currently located;

setting MC (W +1) to be NULL when J is 0, wherein MC (W +1) is a target cell predicted to be entered by the MRS;

a first prediction module, configured to predict, when J is 1, MC (W +1) as a target cell into which the MRS will enter, where MC (W +1) is a next cell in the home mobile ring MC (W), and MC (W) is a cell represented in the home mobile ring with the same identity as c (W);

a second calculating module, configured to calculate, when J > 1, the number K of cells whose identities of the J cells in the home mobile ring are the same as the identity of C (W-1), respectively;

a second prediction module, configured to predict, when K is 1, MC (W +1) as a target cell into which the MRS will enter, where an identity of the C (W-1) is the same as an identity of MC (W)1 in the home mobile ring;

and a third predicting module, configured to predict, when the identifier of G cells in the home mobile ring is the same as the identifier of C [ W- (W-1) ], a next cell of any one of the G cells to be a target cell into which the MRS is to enter.

17. The apparatus of claim 11, wherein the movement prediction performing unit is specifically configured to predict a target cell to which the MRS will enter is MC (W +1) when an identity of c (W) is the same as an identity of MC (W), where c (W) is a cell in which the MRS is currently located, MC (W) is a cell to which the MRS will enter which is predicted the last time, and MC (W +1) is a next cell of MC (W) in the home mobile ring.

18. The apparatus for predicting a target cell according to any one of claims 11-17, further comprising:

a first sending unit, configured to send a resource reservation request to the target cell, where the resource reservation request includes the number of reserved resources required to be used by the MRS, an earliest time of using the reserved resources, and a duration of using the reserved resources, and is used to instruct the target cell to allocate the reserved resources for the MRS;

a judging unit, configured to judge whether the cell where the MRS newly enters is the same as the target cell after the MRS enters a new cell;

an establishing unit, configured to establish a connection using the reserved resource when the cell that the MRS newly enters is the same as the target cell;

a second transmitting unit for transmitting the MRS request when the MRS newly enters into the small cellWhen the district is different from the target district, the district which is newly entered by the MRS sends a resource reservation cancellation request to the target district, so that the target district can immediately recover the reserved resource or according to the condition that B is B₀-B₀*[Tr(i)-T(i)]/Tr (i) gradually reducing the number of resources of the reserved resources;

19. The apparatus for predicting a target cell according to claim 11, wherein the mobile authentication unit comprises:

a first movement rule calculation subunit for calculating N according to α_OK/N_N(calculating the validity of the movement rules, where α is the validity of the movement rules, N_OKFor the home mobile ring, the identity of MC (W +1) is the same as the identity of the cell actually entered by the MRS, and the residence time of MC (W +1) is the same as the number of cells where the MRS resides in the cell actually entered, MC (W +1) is the predicted next cell to be entered by the MRS, N_NThe number of the cells contained in the home mobile ring;

a first movement rule correction subunit for use when α<α_tThen the home mobile ring is re-determined, wherein α_tIs the mobile rule validity threshold.

20. The apparatus for predicting a target cell of claim 19, wherein the mobile authentication unit comprises:

a second movement rule calculating subunit, configured to calculate, in a predetermined number of cycles, a number of consecutive prediction errors when c (W) predicts an MC (W +1) into which the MRS is to enter, where c (W) is a preset cell and MC (W +1) is a predicted next cell into which the MRS is to enter;

a second movement rule correction subunit, configured to stop predicting, at c (W), an MC (W +1) into which the MRS is going to enter when E > Et, where E is the number of consecutive prediction errors and Et is a consecutive prediction error threshold value;

a third movement rule calculating subunit operable to calculate, when E > Et, the number of consecutive same number of times of predicted errors when c (W) predicts MC (W +1) into which the MRS is to enter, within a predetermined number of cycles;

and the third movement rule correcting subunit is used for updating the cell at the W +1 th position in the home mobile ring to the actual switching entering cell of the MRS when Es is greater than Est, wherein Es is the predicted continuous same times of errors, and Est is a threshold value of the continuous same times of errors.