WO2015042890A1

WO2015042890A1 - Device and method for controlling cell switch

Info

Publication number: WO2015042890A1
Application number: PCT/CN2013/084517
Authority: WO
Inventors: 徐凯; 张立文
Original assignee: 华为技术有限公司
Priority date: 2013-09-27
Filing date: 2013-09-27
Publication date: 2015-04-02
Also published as: CN104412655A; CN104412655B

Abstract

Embodiments of the present invention relate to the field of the communications technology. Provided are a method and a device for controlling cell switch. The method comprises: obtaining uplink and downlink level values of each cell to switch to; obtaining uplink and downlink signal receiving quality values of the each cell to switch to; based on the uplink and downlink level values and the uplink and downlink signal receiving quality values of the each cell to switch to, performing switch determination; and if the uplink and downlink level values and the uplink and downlink signal receiving quality values of any one cell to switch to meet a switch determination condition, delivering a switch command to a user equipment (UE) so as to control the UE to switch to the any one cell to switch to. The present invention performs switch determination based on the uplink and downlink level values and the uplink and downlink signal receiving quality values that are obtained for the each cell to switch to. Therefore, a determination manner is stricter and a success rate of the cell switch is improved. In addition, after it is determined that any one cell to switch to meets the switch determination condition, the switch command is delivered to control the UE to switch to the cell to switch to, thus ensuring communication continuity.

Description

Description book control device and method for cell switching

The present invention relates to the field of communications technologies, and in particular, to a device and method for controlling cell handover. Background technique

With the rapid development of mobile communication technology, GSM (Globa l System of Mobi le Communication), UMTS (Universal Mob i le Telecommunicat ions System, LTE (Long Term Evolut) Communication networks such as ion, long-term evolution have emerged. The UE (User Equipment) can communicate in a cell covered by any of the above communication networks. When the UE moves to the edge of the cell in which it is located, in order to maintain the normal communication state of the UE, how to control the UE to perform cell handover becomes a key issue.

In the prior art, the UE (User Equipment) measures the downlink level of the cell to be switched, and after obtaining the downlink level measurement data, reports the downlink level measurement data to the base station, and then the base station according to the downlink level. The measurement data is subjected to a handover decision. When it is determined that the measurement data of the downlink level is greater than the preset threshold, the UE is controlled to perform cell handover, so that the UE switches to the target handover cell.

In the process of implementing the present invention, the inventor has found that at least the following problems exist in the prior art: If the downlink level of the target handover cell is good, but there is downlink interference, resulting in poor downlink quality, after the UE switches to the target handover cell, If the downlink quality is poor, the UE will not be able to decode, and the UE cannot perform normal communication. If the uplink or downlink of the target handover cell is unbalanced or the target handover cell has uplink interference, after the UE switches to the target handover cell, Since the signal power attenuation of the UE is too large or the uplink quality is poor, the base station cannot decode, and the UE cannot perform normal communication. Summary of the invention

In order to solve the problem in the prior art, the embodiment of the present invention provides a control device and method for cell handover. The technical solution is as follows:

The first aspect provides a control device for cell handover, where the device includes:

a first acquiring module, configured to acquire uplink and downlink level values of each to-be-switched cell;

a second acquiring module, configured to acquire uplink and downlink signal receiving quality values of the to-be-switched cells; a decision module, configured to receive, according to the uplink and downlink level values of the to-be-switched cells and the uplink and downlink signal receptions of the to-be-switched cells acquired by the second acquiring module, according to the first acquiring module The quality value is switched.

a control module, configured to send a handover command to the UE to control the UE handover when the decision module determines that the uplink and downlink level values of the to-be-switched cell and the uplink and downlink signal reception quality values satisfy the handover decision condition To any of the cells to be switched.

In a first possible implementation manner of the first aspect, the determining module is configured to: when determining that the uplink and downlink level values of the any to-be-switched cell are higher than a first preset threshold, When the downlink signal receiving quality value is lower than the second preset threshold, determining that the uplink and downlink level values and the uplink and downlink signal receiving quality values of the any to-be-switched cell satisfy the handover decision condition.

With reference to the first aspect or the first possible implementation manner of the first aspect, in a second possible implementation manner, the first acquiring module is configured to receive, by the UE, the downlink of each to-be-switched cell that is reported by the UE Level value; obtaining an uplink level value of each of the to-be-switched cells according to the downlink level value of each of the to-be-switched cells.

With reference to the first aspect, or the first possible implementation of the first aspect, or the second possible implementation of the first aspect, in a third possible implementation, the device further includes:

a third obtaining module, configured to obtain a correspondence table between upper and lower level values of the to-be-switched cells and upper and lower line signal receiving quality values;

The second acquiring module is configured to query, according to the downlink level value of each to-be-switched cell, the uplink and downlink level values of the to-be-switched cell acquired by the third acquiring module, and the uplink and downlink signal receiving quality values. The corresponding correspondence table obtains the uplink and downlink signal reception quality values of the respective to-be-switched cells.

With reference to the third possible implementation manner of the foregoing aspect, in a fourth possible implementation manner, the third acquiring module, configured to receive, by the controller of each to-be-switched cell, the each to-be-switched cell A table of correspondence between the upper and lower level values and the received quality values of the upper and lower signals.

With reference to the first aspect, in a fifth possible implementation, the control module is configured to: when the uplink and downlink level values of the multiple to-be-switched cells and the uplink and downlink signal reception quality values satisfy the handover decision condition, Transmitting, by the UE, a handover command, to control that the UE switches to the uplink and downlink level values optimally, or the uplink and downlink signal reception quality values are optimal or the uplink and downlink level values and the upper, The downlink signal receives the cell to be switched with the best quality value.

A second aspect provides a method for controlling cell handover, where the method includes:

Obtaining upper and lower level values of each to-be-switched cell; Obtaining uplink and downlink signal reception quality values of the to-be-switched cells;

And performing a handover decision according to the uplink and downlink level values of the respective to-be-switched cells and the received quality values of the uplink and downlink signals;

If the uplink and downlink level values of the to-be-switched cell and the uplink and downlink signal reception quality values satisfy the handover decision condition, the handover command is sent to the UE to control the UE to switch to the any to-be-switched cell.

In a first possible implementation manner of the second aspect, the performing, according to the uplink and downlink level values of the to-be-switched cells, and the uplink and downlink signal receiving quality values, the handover decision includes:

When it is determined that the uplink and downlink level values of any of the to-be-switched cells are higher than the first preset threshold, and the uplink and downlink signal reception quality values are lower than the second preset threshold, determining any one of the foregoing The uplink and downlink level values of the to-be-switched cell and the uplink and downlink signal reception quality values satisfy the handover decision condition.

With reference to the second aspect, or the first possible implementation manner of the second aspect, in the second possible implementation manner, the obtaining, by the downlink level value of the to-be-switched cell, includes:

Receiving a downlink level value of each of the to-be-switched cells reported by the UE;

Obtaining an uplink level value of each of the to-be-switched cells according to a downlink level value of each of the to-be-switched cells.

With reference to the second aspect, or the first possible implementation manner of the second aspect, or the second possible implementation manner of the second aspect, in a third possible implementation manner, the acquiring the Before the downlink signal receives the quality value, the method further includes:

Obtaining a correspondence table between the uplink and downlink level values of the to-be-switched cells and the received quality values of the uplink and downlink signals;

Obtaining the uplink level value and the uplink and downlink signal receiving quality values of the to-be-switched cells, including:

Querying, according to the downlink level value of each to-be-switched cell, a correspondence table between the uplink and downlink level values of the to-be-switched cells and the received quality values of the uplink and downlink signals, and acquiring, on each of the to-be-switched cells, The downlink signal receives the quality value.

With reference to the third possible implementation manner of the second aspect, in a fourth possible implementation manner, the obtaining a correspondence between the uplink and downlink level values of the to-be-switched cell and the received quality values of the uplink and downlink signals , including:

And receiving, by the controllers of the to-be-switched cells, a correspondence table between uplink and downlink level values of the respective to-be-switched cells and uplink and downlink signal reception quality values. With reference to the second aspect, in a fifth possible implementation, the sending, by the UE, a handover command, to control the UE to switch to the any to-be-switched cell, includes:

When the uplink and downlink level values of the to-be-switched cells and the uplink and downlink signal reception quality values satisfy the handover decision condition, the handover command is sent to the UE to control the UE to switch to the uplink and downlink. The to-be-switched cell with the best value or the upper and lower signal reception quality values or the upper and lower signal level values and the upper and lower signal reception quality values are optimal.

The beneficial effects of the technical solutions provided by the embodiments of the present invention are:

After obtaining the uplink and downlink level values and the uplink and downlink signal quality values of the to-be-switched cell, the handover decision is performed according to the uplink and downlink level values and the uplink and downlink signal reception quality values. Therefore, the decision mode is more rigorous, and the cell handover is improved. The success rate, and after determining that the uplink and downlink level values of the to-be-switched cell and the uplink and downlink signal reception quality values satisfy the handover decision condition, the handover command is used to control the UE to switch to the to-be-switched cell, thereby ensuring communication. Continuity. DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention. Other drawings may also be obtained from those of ordinary skill in the art in light of the inventive work.

1 is a flowchart of a method for controlling cell handover according to Embodiment 1 of the present invention;

2 is a flowchart of a method for controlling cell handover according to Embodiment 2 of the present invention;

3 is a schematic structural diagram of a control device for cell handover according to Embodiment 3 of the present invention; and FIG. 4 is a schematic structural diagram of another control device for cell handover according to Embodiment 3 of the present invention. detailed description

Embodiment 1

The present invention provides a method for controlling cell handover. Referring to FIG. 1, the method provided in this embodiment includes:

101: Acquire uplink and downlink level values of each to-be-switched cell.

Further, the value of the uplink and downlink of each to-be-switched cell is obtained, including but not limited to: receiving a downlink level value of each to-be-switched cell reported by the UE;

Obtaining an uplink level value of each to-be-switched cell according to a downlink level value of each to-be-switched cell. 1 02: Obtaining uplink and downlink signal reception quality values of each to-be-switched cell;

Further, before acquiring the uplink and downlink signal reception quality values of the cells to be switched, the method further includes:

Obtaining a correspondence table between the uplink and downlink level values of each to-be-switched cell and the received quality values of the uplink and downlink signals;

Obtaining the uplink and downlink signal reception quality values of the cells to be switched, including but not limited to: querying the uplink and downlink level values of the to-be-switched cells and the uplink and downlink signal reception quality values according to the downlink level values of the cells to be switched. The corresponding correspondence table obtains the uplink and downlink signal reception quality values of the cells to be switched.

Further, a correspondence table between the uplink and downlink level values of each to-be-switched cell and the received quality values of the uplink and downlink signals is obtained, including but not limited to:

And receiving, by the controllers of the cells to be switched, a correspondence table between the uplink and downlink level values of the to-be-switched cells and the uplink and downlink signal reception quality values.

1 03: performing handover decision according to uplink and downlink level values of each to-be-switched cell and uplink and downlink signal reception quality values;

Further, the handover decision is performed according to the uplink and downlink level values of the to-be-switched cells and the received quality values of the uplink and downlink signals, including but not limited to:

When it is determined that the uplink and downlink level values of any of the to-be-switched cells are higher than the first preset threshold, and the uplink and downlink signal reception quality values are lower than the second preset threshold, determining the uplink and downlink of any to-be-switched cell The level value and the upper and lower signal reception quality values satisfy the handover decision condition.

1 04: If the uplink and downlink level values of the to-be-switched cell and the uplink and downlink signal reception quality values satisfy the handover decision condition, the handover command is sent to the UE to control the UE to switch to the any to-be-switched cell.

Further, the handover command is sent to the UE to control the UE to switch to any of the to-be-switched cells, including but not limited to:

When the uplink and downlink level values of the to-be-switched cells and the uplink and downlink signal reception quality values satisfy the handover decision condition, the handover command is sent to the UE to control the UE to switch to the upper or lower downlink level, or The to-be-switched cell whose downlink signal reception quality value is optimal or the uplink and downlink level values and the uplink and downlink signal reception quality values are optimal.

After obtaining the uplink and downlink level values and the uplink and downlink signal quality values of the to-be-switched cell, the method according to the embodiment of the present invention performs a handover decision according to the uplink and downlink level values and the uplink and downlink signal reception quality values. Therefore, the decision mode is more rigorous, and the success rate of the cell handover is improved, and after determining that the uplink and downlink level values of the to-be-switched cell and the uplink and downlink signal reception quality values satisfy the handover decision condition, the handover command is sent to control the UE. Switching to the cell to be switched, thereby ensuring continuity of communication. Embodiment 2

An embodiment of the present invention provides a method for controlling a cell handover. The following is a description of the foregoing embodiment. The present embodiment is provided by using the GSM cell in the GSM network as an example. The control mode of the cell handover is described in detail; wherein the controller of the UMTS cell is an RNC (Radio Network Controller), and the controller of the GSM cell is a BSC (Base Stat Analyzer), and One BSC can control multiple GSM cells. Referring to FIG. 2, the method process provided by this embodiment includes:

201: The RNC obtains a downlink level value of each GSM cell.

For this step, the RNC obtains the downlink level values of the respective GSM cells, including but not limited to the following:

The downlink level value of each GSM cell reported by the UE is received.

The UE may be specifically a smart terminal, a multimedia device, a streaming media device, a wireless modem, a wireless local loop station, a mobile station or a subscriber unit, etc., and the UE may be in any position in the cell, which may be static or Mobile.

When the UE is at the junction of the UMTS cell and the GSM cell, the UE measures the downlink level value of the GSM cell, and after obtaining the downlink level value of the GSM cell, the downlink level value is reported to the RNC, that is, the RNC acquires the GSM cell. Downstream level value.

202: The RNC obtains a correspondence table between uplink and downlink level values of each GSM cell and received quality values of uplink and downlink signals.

The RNC obtains a correspondence table between the uplink and downlink level values of each GSM cell and the received quality values of the uplink and downlink signals, including but not limited to the following:

And receiving a correspondence table between the uplink and downlink level values of each GSM cell and the received and received signal quality values of the GSM cells transmitted by the BSCs of the respective GSM cells.

Further, the BSC of the GSM cell collects the uplink and downlink level values of each GSM cell in advance before transmitting the correspondence table between the uplink and downlink level values of the GSM cell and the received quality values of the uplink and downlink signals. The uplink and downlink signal reception quality, and the BSC sets a UE for data acquisition when collecting the uplink and downlink level values of each GSM cell and the uplink and downlink signal reception quality, and the UE performs each The downlink level and the downlink signal reception quality of the GSM cells are measured and reported, and the uplink level and uplink signal reception quality of each GSM cell are measured and reported by the BTS (Base Transceiver Station). Then, the BSC can generate a correspondence relationship between the uplink and downlink level values of the following Table 1 and the received quality values of the uplink and downlink signals for each GSM cell according to the uplink and downlink level values of the respective GSM cells and the uplink and downlink signal reception quality. .

Table 1

The above-mentioned level value and signal receiving quality value are all statistical values, and are all values after power control compensation.

Further, the uplink and downlink signal reception quality is characterized by the form of Table 1, and can also be characterized by HQI (High Quality Identity), wherein the uplink HQI = (the number of uplink signal reception quality 0 + the uplink signal reception quality) 1 times + number of uplink signal reception quality 2 + number of uplink signal reception quality 3) / total number of uplink signal reception quality 0 to 7 *100%, that is, the ratio of uplink signal reception quality 0 to 3; downlink HQI = (the number of downlink signal reception quality 0 + the number of downlink signal reception quality 1 + the number of downlink signal reception quality 2 + the number of downlink signal reception quality 3) / the total number of downlink signal reception quality 0 ~ 7 * 100%, ie The proportion of the downlink signal reception quality 0 ~ 3; If the HQI is used to characterize the uplink and downlink signal reception quality, the above Table 1 can be replaced with the following Table 2.

Table 2

The above-mentioned level value and the uplink and downlink HQI are all statistical values, and are all values after the power control compensation. It should be noted that, when the BSC of the GSM cell sends a correspondence table between the uplink and downlink level values and the uplink and downlink signal reception quality values to the RNC of the UMTS cell, the foregoing Table 1 may be used or may be adopted. The form of the above Table 2, which form is specifically adopted, is not limited in this embodiment.

In addition, since the UMTS cell and the GSM cell belong to different communication networks and cannot directly communicate, the correspondence between the uplink and downlink level values and the received quality values of the uplink and downlink signals is transmitted by the BSC. In the table, the correspondence table between the upper and lower level values and the received quality values of the uplink and downlink signals is transmitted through the centralized control network element. The centralized control network element has a communication relationship with the RNC of the UMTS cell and the BSC of the GSM cell. When the BSC sends a correspondence table between the uplink and downlink level values and the uplink and downlink signal reception quality values, the BSC first sends the correspondence table to the centralized control network element, and then the centralized control network element associates the correspondence table. After being passed to the RNC, the RNC can continue to perform the subsequent processing flow after obtaining the correspondence table.

203: The RNC queries, according to the downlink level value of each GSM cell, a correspondence table between the uplink and downlink level values of each GSM cell and the received quality values of the uplink and downlink signals, and obtains uplink level values and uplink and downlink of each GSM cell. Signal reception quality value;

For example, if the downlink level value of the obtained GSM cell is -99 dBm, the RNC can obtain the value of the downlink level according to the value, as shown in Table 1 in step 202 above. a correspondence table between the uplink level value, the uplink and downlink level values, and the uplink and downlink signal reception quality values of the GSM cell, to obtain the uplink level value of the GSM cell, the uplink and downlink level values, and The downlink signal receives the quality value. If the signal reception quality is in the form of the above Table 1, it can be seen from Table 1 that the uplink level value corresponding to the downlink level value of -99 dB millivolts is -107 dBm, and the uplink level value is -107 dB. The uplink signal receiving quality value corresponding to the volt is 4.8, and the downlink signal receiving quality value corresponding to the downlink level value of -99 dBm is 4.8, thereby obtaining the uplink level value and the uplink and downlink according to the downlink level value. Signal reception quality value;

In addition, if the signal receiving quality adopts the characterization form of Table 2 above, after obtaining the value of the downlink level, the upper and lower level values of the GSM cell as shown in Table 2 in step 202 above may be queried according to the value. And a correspondence table between the uplink and downlink signal reception quality values to obtain uplink and downlink signal reception quality values corresponding to the uplink level value and the uplink and downlink level values of the GSM cell. As can be seen from Table 2, the uplink level corresponding to the downlink level value of -99 dB millivolts is -107 dBm, and the uplink signal reception quality value corresponding to the uplink level value of -107 dBm is 93%, The downlink signal receiving quality value corresponding to the downlink level value of -99 dBm is 93%, so that the upper and lower signal receiving quality values are obtained according to the upper and lower level values;

204: The RNC performs a handover decision according to an uplink and downlink level value of each GSM cell and a received quality value of the uplink and downlink signals.

For this step, the RNC performs handover decision according to the uplink and downlink level values of each GSM cell and the received quality values of the uplink and downlink signals, including but not limited to the following:

When the RNC determines that the uplink and downlink levels of any GSM cell are higher than the first preset threshold and When the downlink signal reception quality value is lower than the second preset threshold, it is determined that the uplink and downlink level values of the GSM cell and the uplink and downlink signal reception quality values satisfy the handover decision condition.

The first preset threshold may be specifically -65 decibels millivolts. Of course, the size of the first preset threshold may be other values than the above values, for example, -70 or -75 decibel millivolts, this embodiment The size of the first preset threshold is not specifically limited. The size of the second preset threshold is determined according to the representation form of the signal receiving quality. If the signal receiving quality is directly represented by the form in Table 1 in the above step 202, the second pre- The size of the second preset threshold may be other than the above value. For example, 4 or 5, the size of the second preset threshold is also not performed in this embodiment. Specifically, if the signal receiving quality is characterized by the form of Table 2 in the foregoing step 202, the size of the second preset threshold may be specifically 80%. Of course, the second preset threshold may be other values than the above values. For example, 85% or 90%, the size of the second preset threshold is not specifically limited in this embodiment.

205: If the uplink and downlink level values of the GSM cell and the uplink and downlink signal reception quality values satisfy the handover decision condition, the RNC sends a handover command to the UE to control the UE to switch to any GSM cell.

After determining that the GSM cell satisfies the handover decision condition, the handover command is sent to the UE through the air interface, and after receiving the handover command, the UE switches from the UMTS cell to the GSM cell, thereby ensuring communication. Continuity.

In addition, for the case where there are multiple GSM cells, the uplink and downlink level values, and the uplink and downlink signal reception quality values satisfy the handover decision condition, the method provided by the embodiment further includes: selecting the upper and lower downlink levels to be optimal. The GSM cell with the best uplink or downlink signal reception quality value or the uplink and downlink level values and the uplink and downlink signal reception quality values is the UE's handover cell, and controls the UE to switch to the cell. Among them, the upper and lower level values are optimally referred to as the upper and lower level values, and the upper and lower signal receiving quality values are optimally referred to as the upper and lower signals receiving quality values are the smallest. For example, if all three GSM cells satisfy the handover decision condition, the three GSM cells are identified by the symbols GSM1, GSM2, and GSM3, and the uplink and downlink levels of the GSM1 are -85 dBm and -88 dBm. The downlink signal reception quality values are 4 and 5, the GSM2 uplink and downlink levels are -80 dBm and -85 dBm, and the uplink and downlink signal reception quality values are 3 and 4, GSM3 uplink and downlink. The flat value is -75 dBm and -80 dBm, and the upper and lower signal reception quality values are 2 and 3. For example, if the above and downlink level values are optimal as the selection criteria, the GSM3 cell is selected as the UE. The target switches the cell.

The handover decision method provided in the above steps 201 to 205 will be explained in detail below with reference to a specific example. For example, when a certain UE is currently in a call state and is in the UMTS cell edge, in order to ensure communication continuity of the UE, cell handover is required. It is assumed that there are two GSM cells adjacent to the UMTS cell, which are respectively identified by the symbols G1 and G2, and are uniformly controlled by the BSC1. Before the handover decision is made, the BSC1 has generated corresponding uplink and downlink for each GSM cell. A correspondence table between the level value and the received quality values of the upper and lower signals, and stored in itself. When the RNC performs the handover decision, the corresponding relationship table between the uplink and downlink level values of the two GSM cells stored in the BSC1 and the uplink and downlink signal reception quality values is first obtained through the centralized control network element, and is determined according to Switching the downlink level value of each GSM cell reported by the UE, querying the correspondence table between the corresponding uplink and downlink level values and the received quality values of the uplink and downlink signals, and obtaining the uplink level value and the uplink and downlink signals of each GSM cell. Receive quality.

Assume that the UE to be switched reports the downlink levels of G1 and G2, and the downlink level of G1 is -70 dBm, and the downlink level of G2 is -80 dBm. After that, the RNC queries the correspondence between the upper and lower level values of G1 and G2 and the received quality values of the uplink and downlink signals according to the downlink level values of the two, and obtains an uplink level value of -82 dB for G1. In millivolts, the downlink signal reception quality is 5, the uplink signal reception quality is 6; the G2 cell uplink level is -88 dBm, the downlink signal reception quality is 2, and the uplink quality is 1, with the first preset threshold being -85 dB millivolts, the second preset threshold is 4 as an example. Since the uplink and downlink signal reception quality of G1 does not meet the preset threshold, G1 is not selected as the target handover cell of the UE to be switched, and G2 is selected as the standby. The UE is handed over to the target handover cell at the edge of the UMTS cell.

In addition, the cell in which the UE is currently located may be an LTE cell, a GSM cell, or a TD-SCDMA (Time Divi s ion-Synchronous Code Divi s ion Mic t iple Acces s, time division synchronization code points, in addition to the UMTS cell shown in this embodiment. Multiple access) cell, CDMA (Code Divi s ion Mul t iple Acces s) cell, Wimax (Wor ldwide Interoperabi ty for Microwave Acces s, microwave access global intercommunication) cell; In addition to the GSM cell shown in this embodiment, the LTE cell, the UMTS cell, the TD-SCDMA cell, the CDMA cell, and the Wimax cell; that is, the cell handover control method provided in this embodiment can not only switch between different communication networks. , also can switch between the same communication network. Regardless of which cell is switched to another cell by the UE, the handover decision mode is the same as the handover decision mode of the foregoing step 201 to step 205, and details are not described herein again. For example, when the UE is handed over to the GSM cell by the LTE cell or switched to the GSM cell by the TD-SCDMA cell, when the controller of the LTE cell or the controller of the TD-SCDMA cell performs the handover decision, the handover decision mode may be the above. The RNC of step 201 to step 205 performs a handover decision. It should be noted that after the controller of the UE to be switched is transmitting the correspondence table between the uplink and downlink level values and the uplink and downlink signal receiving quality values to the centralized control network element, the centralized control network element may not correspond to the network element. The relationship is forwarded to the controller of the cell where the UE is currently located, and the handover decision is directly performed according to the correspondence table and the uplink and downlink level values, and the central control network element performs the handover decision mode, and the handover decision mode is the same as the foregoing step 201 to the step. The manner in which the RNC of the 205 performs the handover decision is the same. After the decision result is obtained, the decision result is sent to the controller of the cell where the UE is currently located.

The method provided in this embodiment, after obtaining the uplink and downlink level values and the uplink and downlink signal quality values of the to-be-switched cell, performs handover decision according to the uplink and downlink level values and the received quality values of the uplink and downlink signals, and therefore, the decision mode More stringent, the success rate of the cell handover is improved, and after determining that the uplink and downlink level values of the to-be-switched cell and the uplink and downlink signal reception quality values satisfy the handover decision condition, the handover command is sent to control the UE to switch to the to-be-switched The cell is switched to ensure continuity of communication. Embodiment 3

The embodiment of the present invention provides a control device for cell handover, which is used to perform the method provided in Embodiment 1 or Embodiment 2. The control device of the cell handover refers to the controller of the cell where the UE is currently located; that is, if the cell where the UE is currently located is a UMTS cell, the device refers to the controller RNC of the UMTS cell; if the cell where the UE is currently located is a GSM cell The device then refers to the controller BSC of the GSM cell. Referring to Figure 3, the device includes:

The first obtaining module 31 is configured to obtain the uplink and downlink level values of the cells to be switched; the second acquiring module 32 is configured to obtain the uplink and downlink signal receiving quality values of the cells to be switched, and the determining module 33 is configured to The uplink and downlink level values of the to-be-switched cells and the uplink and downlink signal reception quality values of the to-be-switched cells acquired by the second acquiring module 32 are forwarded by the first obtaining module 31;

The control module 34 is configured to: when the determining module 33 determines that the uplink and downlink level values of the to-be-switched cell and the uplink and downlink signal reception quality values satisfy the handover decision condition, send a handover command to the UE to control the UE to switch to the UE. A cell to be switched.

It should be noted that, since the functions performed by the first obtaining module and the second acquiring module are all acquiring data, the only difference between the two is that the acquired data is different. Therefore, in the actual application, the first acquiring module and the second obtaining module may be combined into one module collectively referred to as an acquiring module to complete all functions of the first acquiring module and the second acquiring module. The specific embodiment is not specifically limited in this embodiment. Further, the determining module 33 is configured to: when it is determined that the uplink and downlink level values of any of the to-be-switched cells are higher than the first preset threshold, and the uplink and downlink signal receiving quality values are lower than the second preset threshold, The uplink and downlink level values of the to-be-switched cell and the uplink and downlink signal reception quality values satisfy the handover decision condition.

Further, the first obtaining module 31 is configured to receive a downlink level value of each to-be-switched cell reported by the UE, and an uplink level value of the to-be-switched cell sent by the controller of the to-be-switched cell; The flat value obtains the uplink level value of each cell to be switched.

Further, referring to FIG. 4, the device further includes:

The third obtaining module 35 is configured to obtain a correspondence table between the uplink and downlink level values of the to-be-switched cells and the received quality values of the uplink and downlink signals;

The second obtaining module 32 is configured to query, according to the downlink level value of each to-be-switched cell, the correspondence between the uplink and downlink level values of the to-be-switched cells acquired by the third acquiring module 35 and the received quality values of the uplink and downlink signals. The relationship table obtains the uplink and downlink signal reception quality values of the cells to be switched.

Further, the third obtaining module 35 is configured to receive a correspondence table between the uplink and downlink level values of the to-be-switched cells and the received and received signal quality values of the to-be-switched cells sent by the controllers of the to-be-switched cells.

Further, the control module 34 is configured to send a handover command to the UE to control the UE to switch to the uplink and downlink when the uplink and downlink level values of the to-be-switched cell and the uplink and downlink signal reception quality values satisfy the handover decision condition. The to-be-switched cell whose level value is optimal or the uplink and downlink signal reception quality values are optimal or the uplink and downlink level values and the uplink and downlink signal reception quality values are optimal.

After obtaining the uplink and downlink level values and the uplink and downlink signal quality values of the to-be-switched cell, the device according to the embodiment of the present invention performs handover decision according to the uplink and downlink level values and the uplink and downlink signal reception quality values, and therefore, the decision is The method is more rigorous, and the success rate of the cell handover is improved, and after determining that the uplink and downlink level values of the to-be-switched cell and the uplink and downlink signal reception quality values satisfy the handover decision condition, the handover command is sent to control the UE to switch to the The cell to be switched, thereby ensuring continuity of communication. Embodiment 4

An embodiment of the present invention provides a control system for cell handover, where the control system includes a memory and a processor;

The memory is configured to store a correspondence table between the uplink and downlink level values of the to-be-switched cells and the uplink and downlink signal reception quality values, and the processor is configured to obtain uplink and downlink level values of the to-be-switched cells. Obtaining the uplink and downlink signal reception quality values of each to-be-switched cell; The uplink and downlink level values of the area and the uplink and downlink signal reception quality values are switched. If the uplink and downlink level values of the to-be-switched cell and the uplink and downlink signal reception quality values satisfy the handover decision condition, the user equipment is The UE sends a handover command to control the UE to switch to any cell to be switched.

Further, the processor is further configured to: when it is determined that the uplink and downlink level values of any of the to-be-switched cells are higher than the first preset threshold, and the uplink and downlink signal reception quality values are lower than the second preset threshold, The uplink and downlink level values of the to-be-switched cell and the uplink and downlink signal reception quality values satisfy the handover decision condition.

Further, the processor is further configured to receive a downlink level value of each to-be-switched cell reported by the UE, and obtain an uplink level value of each to-be-switched cell according to a downlink level value of each to-be-switched cell.

Further, the processor is further configured to obtain a correspondence table between the uplink and downlink level values of the to-be-switched cells and the uplink and downlink signal reception quality values, and query each to-be-switched according to the downlink level value of each to-be-switched cell. The correspondence table between the uplink and downlink level values of the cell and the received quality values of the uplink and downlink signals acquires an uplink level value and an uplink and downlink signal reception quality value of each to-be-switched cell.

Further, the processor is further configured to receive a correspondence table between the uplink and downlink level values of the to-be-switched cells and the uplink and downlink signal reception quality values sent by the controllers of the cells to be switched.

Further, the processor is further configured to: when the uplink and downlink level values of the plurality of to-be-switched cells and the uplink and downlink signal reception quality values satisfy the handover decision condition, send a handover command to the UE, to control the UE to switch to the upper, The to-be-switched cell whose downlink level value is optimal or the uplink and downlink signal reception quality values are optimal or the uplink and downlink level values and the uplink and downlink signal reception quality values are optimal.

The system provided by the embodiment of the present invention, after obtaining the uplink and downlink level values and the uplink and downlink signal quality values of the to-be-switched cell, performs handover decision according to the uplink and downlink level values and the uplink and downlink signal reception quality values, and therefore, the decision The method is more rigorous, and the success rate of the cell handover is improved, and after determining that the uplink and downlink level values of the to-be-switched cell and the uplink and downlink signal reception quality values satisfy the handover decision condition, the handover command is sent to control the UE to switch to the The cell to be switched, thereby ensuring continuity of communication. It should be noted that, when the control device of the cell handover provided by the foregoing embodiment controls the cell handover, only the division of each functional module is used as an example. In an actual application, the foregoing function may be allocated by different functional modules according to requirements. Upon completion, the internal structure of the device is divided into different functional modules to perform all or part of the functions described above. In addition, the control device of the cell handover provided by the foregoing embodiment is the same as the embodiment of the method for controlling the cell handover, and the specific implementation process is described in the method embodiment, and details are not described herein again.

The serial numbers of the embodiments of the present invention are merely for the description, and do not represent the advantages and disadvantages of the embodiments. A person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium. The storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., which are within the spirit and scope of the present invention, should be included in the protection of the present invention. Within the scope.

Claims

claims

1. A cell switching control device, characterized in that the device includes:

The first acquisition module is used to acquire the uplink and downlink level values of each cell to be switched;

The second acquisition module is used to acquire the uplink and downlink signal reception quality values of each cell to be switched; the decision module is used to obtain the uplink and downlink levels of each cell to be switched based on the first acquisition module. The handover decision is made based on the uplink and downlink signal reception quality values of each cell to be switched obtained by the second acquisition module;

A control module configured to issue a handover command to the user equipment UE when the judgment module judges that the uplink and downlink level values and the uplink and downlink signal reception quality values of any cell to be switched meet the handover judgment conditions to control the The UE switches to any cell to be switched.

2. The device according to claim 1, characterized in that, the judgment module is configured to determine that the uplink and downlink level values of any cell to be switched are higher than the first preset threshold and the When the uplink and downlink signal reception quality values are both lower than the second preset threshold, it is determined that the uplink and downlink level values and the uplink and downlink signal reception quality values of any cell to be switched satisfy the switching decision conditions.

3. The device according to claim 1 or 2, characterized in that, the first acquisition module is configured to receive the downlink level value of each cell to be switched reported by the UE; The downlink level value of the cell obtains the uplink level value of each cell to be switched.

4. The device according to any one of claims 1 to 3, characterized in that the device further includes:

The third acquisition module is used to obtain the correspondence table between the uplink and downlink level values and the uplink and downlink signal reception quality values of each cell to be switched;

The second acquisition module is configured to query the uplink and downlink level values and uplink and downlink signal reception quality values of each cell to be switched obtained by the third acquisition module according to the downlink level value of each cell to be switched. The corresponding relationship table between them obtains the uplink and downlink signal reception quality values of each cell to be switched.

5. The device according to claim 4, the third acquisition module, configured to receive the uplink and downlink level values and uplink and downlink signals of each cell to be switched sent by the controller of each cell to be switched. Correspondence table between received quality values.

6. The device according to claim 1, characterized in that, the control module is configured to send the signal to all cells when the uplink and downlink level values and the uplink and downlink signal reception quality values of multiple cells to be switched meet the handover decision conditions. The UE issues a switching command to control the UE to switch to the optimal uplink and downlink level values or the optimal uplink and downlink signal reception quality values or the uplink and downlink level values and the uplink and downlink signal reception quality values. The cell to be switched has the best downlink signal reception quality values.

7. A cell handover control method, characterized in that the method includes:

Obtain the uplink and downlink level values of each cell to be switched;

Obtain the uplink and downlink signal reception quality values of each cell to be switched;

Make a handover decision based on the uplink and downlink level values and the uplink and downlink signal reception quality values of each cell to be switched;

If the uplink and downlink level values and the uplink and downlink signal reception quality values of any cell to be switched meet the handover decision conditions, a handover command is issued to the user equipment UE to control the UE to switch to any cell to be switched. .

8. The method according to claim 7, wherein the handover decision is made based on the uplink and downlink level values and the uplink and downlink signal reception quality values of each cell to be switched, including:

When it is determined that the uplink and downlink level values of any cell to be switched are both higher than the first preset threshold and the uplink and downlink signal reception quality values are both lower than the second preset threshold, it is determined that any The uplink and downlink level values and uplink and downlink signal reception quality values of the cell to be switched satisfy the handover decision conditions.

9. The method according to claim 7 or 8, characterized in that said obtaining the uplink and downlink level values of each cell to be switched includes:

Receive the downlink level value of each cell to be switched reported by the UE;

The uplink level value of each cell to be switched is obtained according to the downlink level value of each cell to be switched.

10. The method according to any one of claims 7 to 9, characterized in that, before obtaining the uplink and downlink signal reception quality values of each cell to be switched, the method further includes: Obtain a correspondence table between the uplink and downlink level values and the uplink and downlink signal reception quality values of each cell to be switched;

Obtaining the uplink and downlink signal reception quality values of each cell to be switched includes: querying the uplink and downlink level values and the uplink and downlink values of each cell to be switched according to the downlink level value of each cell to be switched. The correspondence table between signal reception quality values obtains the uplink and downlink signal reception quality values of each cell to be switched.

11. The method according to claim 10, said obtaining the correspondence table of the uplink and downlink level values and the uplink and downlink signal reception quality values of each cell to be switched, including:

Receive a correspondence table between the uplink and downlink level values of each cell to be switched and the uplink and downlink signal reception quality values sent by the controller of each cell to be switched.

12. The method according to claim 7, wherein said issuing a handover command to user equipment UE to control the UE to switch to any of the cells to be switched includes:

When the uplink and downlink level values and the uplink and downlink signal reception quality values of multiple cells to be switched meet the handover decision conditions, a handover command is issued to the UE to control the UE to switch to the uplink and downlink power levels. The cell to be switched has the best average value or the best uplink and downlink signal reception quality values, or the best uplink and downlink level values and the uplink and downlink signal reception quality values.