WO2015131667A1 - 一种小区切换方法和装置、计算机存储介质 - Google Patents
一种小区切换方法和装置、计算机存储介质 Download PDFInfo
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- WO2015131667A1 WO2015131667A1 PCT/CN2015/070508 CN2015070508W WO2015131667A1 WO 2015131667 A1 WO2015131667 A1 WO 2015131667A1 CN 2015070508 W CN2015070508 W CN 2015070508W WO 2015131667 A1 WO2015131667 A1 WO 2015131667A1
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- 238000000034 method Methods 0.000 title claims abstract description 69
- 238000003860 storage Methods 0.000 title claims abstract description 11
- 210000004027 cell Anatomy 0.000 description 519
- 230000000694 effects Effects 0.000 description 7
- 238000012545 processing Methods 0.000 description 7
- 238000004590 computer program Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000004891 communication Methods 0.000 description 5
- 238000009826 distribution Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 description 1
- 210000003771 C cell Anatomy 0.000 description 1
- 210000004128 D cell Anatomy 0.000 description 1
- 210000003719 b-lymphocyte Anatomy 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/32—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data
- H04W36/324—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data by mobility data, e.g. speed data
Definitions
- the present invention relates to the field of wireless communications technologies, and in particular, to a cell switching method and apparatus, and a computer storage medium.
- wireless cell distribution shows multi-mode potential, and GSM, UMTS, LTE, TDSCDMA, CDMA and other wireless systems coexist, which makes the community
- the distribution shows the vertical distribution structure of macro cells, micro cells, nano cells, and pico cells; at the same time, the distribution of WLANs in wireless local area networks is more and more extensive, and there are more and more cells in multi-mode wireless systems. Interact and gradually move toward convergence. In a converged heterogeneous network architecture, switching between different modes of multimode and between WLANs is often required.
- the current handover only considers the source channel, the level of the target channel or the signal-to-noise ratio, the quality, and the service-to-bearer requirements of the terminal itself, including the required delay and bit error rate requirements.
- the source channel the level of the target channel or the signal-to-noise ratio, the quality, and the service-to-bearer requirements of the terminal itself, including the required delay and bit error rate requirements.
- the terminal may switch from the micro cell to the micro cell, and continuously switch in a small interval, causing frequent switching, increasing the switching load of the network, causing interruption or delay of the user service, and reducing User's feelings.
- the terminal may also switch directly from the WLAN to the micro cell, causing frequent handovers.
- the main technical problem to be solved by the present invention is to provide a cell handover method and device, and a computer storage medium, which can solve the technical problem that the terminal frequently switches in the current cell handover. question.
- an embodiment of the present invention provides a cell handover method, including:
- the candidate handover cell includes: a neighboring cell of the source cell or a neighboring cell of the source cell, where the load meets a preset condition, and the load includes a radio resource load and/or a backhaul load.
- the selecting a handover target cell from the candidate handover cells according to the moving speed of the terminal includes:
- the selecting, by the candidate handover cell, the handover target cell according to the determined cell type including:
- a cell in the candidate handover cell that matches the determined cell type, and at least one of a reception quality, a reception level, and a signal-to-noise ratio satisfies a predetermined condition.
- the moving speed level includes: high speed, medium speed, and low speed;
- Determining a cell type corresponding to the moving speed level including:
- the moving speed level is medium speed
- determining that the cell type corresponding to the medium speed is a micro cell
- the moving speed level is low speed, it is determined that the cell type corresponding to the low speed is a pico cell.
- the method further includes: when there is no cell type corresponding to the moving speed level in the candidate switching cell, the candidate cell is switched from the candidate according to a preset rule. A cell type is selected from the selected cell types, and the handover target cell is determined from the candidate handover cells according to the selected cell type.
- the preset rule when the moving speed level is high speed and the macro cell is not in the candidate switching cell, the preset rule includes: first selecting a micro cell, if there is no micro cell in the candidate switching cell Then, the pico cell is selected again, and if the pico cell is not stored in the candidate handover cell, the cell type is selected as a wireless local area network;
- the preset rule includes: first selecting a macro cell, and if there is no macro cell in the candidate switching cell, selecting a pico a cell, if there is no pico cell in the candidate handover cell, then selecting a wireless local area network;
- the preset rule includes: first selecting a WLAN cell, if there is no WLAN cell in the candidate switching cell, then The micro cell is selected, and if there is no micro cell in the candidate handover cell, the macro cell is selected again.
- the embodiment of the present invention further provides a cell switching apparatus, including: a speed acquiring module, a cell selecting module, and a cell switching module;
- the speed acquisition module is configured to acquire a moving speed of the terminal
- the cell selection module is configured to select a handover target cell from the candidate handover cells according to the moving speed of the terminal;
- the cell switching module is configured to switch the terminal to the handover target cell.
- the cell selection module is configured to select a handover target cell from a neighboring cell of a source cell or a neighboring cell of a source cell that meets a preset condition according to a moving speed of the terminal, where the load is selected. Includes radio resource load and/or backhaul load.
- the cell selection module includes: a level determining module, a type determining module, and a target cell selecting module;
- the level determining module is configured to determine a moving speed level of the terminal
- the type determining module is configured to determine a cell type corresponding to the moving speed level
- the target cell determining module is configured to select the handover target cell from the candidate handover cells according to the cell type determined by the type determining module.
- the target cell selection module is configured to select, in the candidate handover cell, the determined cell type, and at least one of a reception quality, a reception level, and a signal to noise ratio meets a predetermined condition.
- the cell serves as a handover target cell.
- the moving speed level includes: high speed, medium speed, and low speed;
- the type determination module is configured to:
- the moving speed level is medium speed
- determining that the cell type corresponding to the medium speed is a micro cell
- the moving speed level is low speed, it is determined that the cell type corresponding to the low speed is a pico cell.
- the type determining module is further configured to: when there is no cell type corresponding to the moving speed level in the candidate switching cell, the cell included in the candidate switching cell according to a preset rule Select a cell type from the type.
- the preset rule when the moving speed level is high speed and the macro cell is not in the candidate switching cell, the preset rule includes: first selecting a micro cell, if there is no micro cell in the candidate switching cell Then, the pico cell is selected again, and if the pico cell is not stored in the candidate handover cell, the cell type is selected as a wireless local area network;
- the preset rule includes: first selecting a macro cell, and if there is no macro cell in the candidate switching cell, selecting a pico a cell, if there is no pico cell in the candidate handover cell, then selecting a wireless local area network;
- the preset rule includes: first selecting a WLAN cell, and if there is no WLAN cell in the candidate handover cell, selecting a micro cell, and if there is no micro cell in the candidate handover cell, selecting a macro Community.
- Embodiments of the present invention also provide a computer storage medium in which computer executable instructions are stored, the computer executable instructions being used to perform the above method.
- the embodiment of the present invention provides a cell handover method and apparatus, and a computer storage medium, which implements a handover of a cell in consideration of a speed factor, so that the terminal does not frequently switch the cell.
- the cell handover method in the embodiment of the present invention includes: acquiring a terminal The moving speed of the terminal is selected according to the moving speed of the terminal, and the switching target cell is selected from the candidate switching cell, and the terminal is switched to the switching target cell.
- the cell switching method provided by the embodiment of the present invention considers the moving speed factor of the terminal.
- the appropriate handover target cell is determined according to the moving speed, which avoids the frequent handover problem of the terminal caused by the existing cell handover without considering the moving speed of the terminal, optimizes the switching effect, and improves the user experience.
- the candidate cell when the current service of the terminal has a high bearer requirement, includes: a cell in a neighboring cell of the source cell that meets a preset condition, where the load includes a radio resource load and/or a backhaul. Load; when the current service of the terminal is low on the bearer, the candidate cell includes: a neighboring cell of the source cell; and the cell method in the embodiment of the present invention further considers the neighboring cell on the basis of considering the moving speed of the terminal.
- the load and the terminal service require these factors to determine the most suitable target cell, and avoid the existing cell handover without considering the load of the neighboring cell and the moving speed of the terminal, and the base station load is large, and the terminal service cannot be realized.
- the switching problem occurs frequently, the load of the communication system is reduced, and the effect of the switching is further optimized, and the user experience is improved.
- FIG. 1 is a schematic flowchart of a cell handover method according to Embodiment 1 of the present invention
- FIG. 2 is a schematic flowchart of another cell handover method according to Embodiment 1 of the present invention.
- FIG. 3 is selected according to a moving speed in a cell switching method according to Embodiment 1 of the present invention; Schematic diagram of the process of switching the target cell;
- FIG. 4 is a schematic flowchart of selecting a handover target cell according to a moving speed in another cell handover method according to Embodiment 1 of the present invention
- FIG. 5 is a schematic structural diagram of a cell switching apparatus according to Embodiment 2 of the present invention.
- FIG. 6 is a schematic structural diagram of a cell switching apparatus according to Embodiment 2 of the present invention.
- Embodiment 1 is a diagrammatic representation of Embodiment 1:
- the embodiment provides a cell handover method. As shown in FIG. 1 , the method includes the following steps:
- Step 101 Acquire a moving speed of the terminal.
- the speed is measured by the base station, and the base station can implement measurement by using techniques such as MIMO and frequency offset estimation.
- the speed is measured by the terminal, and the terminal can accurately measure the speed by measuring the device such as its own sensor.
- the measurement report is periodically reported to the base station, and the speed measurement field can be directly added at the end of the measurement report message during specific transmission.
- Step 102 Select a handover target cell from the candidate handover cells according to the moving speed of the terminal, and switch the terminal to the handover target cell.
- the handover target cell is a neighboring cell that the terminal finally needs to switch to.
- the method of the embodiment considers the moving speed factor of the terminal in the cell handover, and determines the appropriate handover target cell according to the terminal moving speed, so as to avoid the frequent handover problem of the terminal caused by the existing cell handover without considering the moving speed of the terminal. Optimized the effect of switching and improved user experience.
- the air interface load of the base station is not considered, the load on the base station is high, and the scheduling pressure is increased.
- the service request delay will be low. If the service with fast rate is switched to the target base station, the delay of the backhaul link is too large or overloaded. Large, the business can not be done, that is, the terminal business can not be achieved.
- the candidate handover cell is limited as follows:
- the candidate cell includes: a cell in the neighboring cell of the source cell that meets a preset condition, where the load includes a radio resource load and/or a backhaul load;
- the candidate cell includes: a neighboring cell of the source cell.
- the method for cell handover in the method of the present embodiment can first consider the requirements of the terminal service for the bearer, and use different methods to determine the target cell for handover according to different service requirements, and if the current service of the terminal has high requirements on the bearer, The load of the cell needs to be considered, and the candidate handover cell is selected according to the load, and then the moving speed of the terminal can be considered, and the target cell that needs to be switched to be selected from the candidate handover cell, that is, the target cell is switched, and finally the target is switched.
- the handover target cell is directly selected from the neighboring cells according to the moving speed; it can be seen that the method in this embodiment considers more factors than the existing cell handover method, for example, The radio resource load of the neighboring cell, the backhaul link load, and the moving speed of the terminal, thereby solving the problem that the existing cell handover method is not considered here.
- the problems caused by the factors such as the problem that the base station is heavy, the service scheduling pressure is large, the terminal cannot be realized, and the terminal frequently switches.
- the cell handover method provided in this embodiment may specifically include the following steps:
- Step 201 Determine, according to the requirement of the current service of the terminal, whether the current service of the terminal is a service with a high requirement for the bearer or a service with a low bearer requirement, if the service with high bearer requirements is transferred to step 202, if the service with low bearer requirements is required Go to step 203.
- the method in this embodiment can divide the terminal service into two categories according to the requirements of the current service of the terminal, and the service with high requirements on the bearer and the service with low bearer requirements; specifically, the requirement for the bearer service of the terminal service may include the service At least one of required rate requirements, delay requirements, and bit error rate requirements.
- the terminal service when the requirements of the terminal service include the rate requirement and the delay requirement, the terminal service may be divided into a service with a lower rate and a lower rate and a service with a lower rate and a higher rate.
- Step 202 Select, from the neighboring cells of the source cell where the terminal is located, a cell whose load meets the preset condition as a candidate handover cell, where the load includes a radio resource load and/or a backhaul load, and the process proceeds to step 204.
- the load of the neighboring cell includes the radio resource load and/or the backhaul load;
- the radio resource load refers to the air interface load of the base station in the neighboring cell, and the backhaul load refers to the backhaul link load of the base station in the neighboring cell.
- the following two methods may be used to obtain the air interface load and the backhaul link load information of the neighboring cell base station, that is, the wireless resource backhaul load information of the neighboring cell:
- the first type through the interconnection interface between the base stations, such as the X2 interface between the LTE base stations, sharing the load information, the periodic update time of the information can be configured, and the core network needs to know the load information of the base station it manages, which can be The interface between the core network and the radio access network is obtained.
- the base station reports the load information to the core network through the interface, and the core network forwards the information to the base station.
- the preset condition of the step 202 may include: selecting, from the neighboring cells of the source cell where the terminal is located, a cell with a load less than a preset threshold as a candidate handover cell; for example, when the load of the cell includes: a radio resource load, Obtaining a radio resource load size of each neighboring cell, and then selecting a cell whose radio resource load is less than a preset threshold as a candidate handover cell; and, for example, when the cell conforms to include: a radio resource load and a backhaul load; acquiring wireless of each neighboring cell The resource load and the backhaul load are calculated, and then the average load of each neighboring cell is calculated according to the radio resource load and the backhaul load of each neighboring cell, and the cell whose average load is less than the preset threshold is selected as the candidate handover cell.
- Step 203 The neighboring cell of the source cell where the terminal is located is directly used as the candidate handover cell, and the process proceeds to step 204.
- Step 204 Select a handover target cell from the candidate handover cells according to the moving speed of the terminal.
- the method of the embodiment determines the optimal target cell for the service with high bearer requirements, considering the load of the neighboring cell and the moving speed of the terminal, and avoids the base station load caused by the radio resource load and/or the backhaul load not being considered in the cell handover.
- the problem that the big and/or the business cannot be realized also avoids the problem that the terminal frequently switches due to the moving speed of the terminal.
- the target cell that needs to be switched may be selected from the neighboring cells of the source cell in consideration of the moving speed of the terminal, which may avoid the frequent switching of the terminal regardless of the load of the cell.
- Step 205 Switch the terminal from the source cell to the handover target cell.
- the cell handover method provided in this embodiment comprehensively considers the factors of the load of the neighboring cell, the moving speed of the terminal, and the requirement of the terminal service for the bearer, thereby determining that the most suitable target cell is avoided, and the existing cell handover is avoided without considering the neighboring cell.
- Load and terminal movement speed The base station has a large load, the terminal service cannot be realized, the terminal frequently switches, the load of the communication system is reduced, the switching effect is optimized, and the user experience is improved.
- step 102 or step 204 may specifically include:
- Step 301 Determine a moving speed level of the terminal.
- the moving speed level of the terminal in the embodiment may be divided into three levels, high speed, medium speed, and low speed; the specific dividing manner may be divided according to preset two speed thresholds.
- two speed thresholds are respectively set, Vhigh and Vlow.
- V>Vhigh it is high speed
- V ⁇ Vlow it is low speed
- it is between the two it is medium speed.
- the mobile speed level of the terminal is not limited to three levels, and may be divided into two or more levels. The number of specific levels may be determined according to the environment of the cell handover or actual needs.
- Step 302 Determine a cell type corresponding to the moving speed level.
- the method of this embodiment may further determine the cell type with the speed level after determining the moving speed level, thereby selecting the handover target cell.
- when the moving speed level includes: high speed, medium speed, and low speed; when the moving speed level is high speed, determining that the cell type corresponding to the high speed is a macro cell; when the moving speed is When the level is medium speed, it is determined that the cell type corresponding to the medium speed is a micro area; when the moving speed level is low speed, it is determined that the cell type corresponding to the low speed is a pico cell.
- Step 303 Select the handover target cell from the candidate handover cells according to the determined cell type.
- the step 303 may specifically include: selecting, as the handover target cell, a cell that matches the determined cell type in the candidate handover cell.
- the foregoing step 303 may further include: selecting the location A cell in the candidate handover cell that matches the determined cell type, and at least one of the reception quality, the reception level, and the signal-to-noise ratio satisfies a predetermined condition as a handover target cell.
- the predetermined condition in this embodiment may be that at least one of the reception quality, the reception level, and the signal-to-noise ratio is higher than a certain threshold.
- the cell handover method provided in this embodiment may further select one of the cell types included in the candidate handover cell according to a preset rule when there is no cell type corresponding to the mobile speed level in the candidate handover cell.
- the cell type determines the handover target cell from the candidate handover cells according to the selected cell type. specifically:
- a cell type is selected from the cell types included in the candidate switching cell according to a preset rule, according to the selected cell type. And determining, by the candidate handover cell, the handover target cell.
- the preset rule includes: selecting a micro cell first, if there is no micro cell in the candidate switching cell, Selecting a pico cell, if there is no pico cell in the candidate switching cell, Then select the cell type as a wireless local area network.
- the cell type of the candidate switching cell is a macro cell, and at least one of the receiving quality, the receiving level, and the signal-to-noise ratio meets a predetermined condition as a handover.
- the cell in the candidate handover cell is selected as the micro cell, and the cell whose at least one of the reception quality, the reception level, and the signal-to-noise ratio meets the predetermined condition is used as the handover target cell; If there is no micro cell in the candidate handover cell, the cell type of the candidate handover cell is selected as the pico cell, and the cell whose at least one of the reception quality, the reception level, and the signal-to-noise ratio meets the predetermined condition is used as the cell of the handover target cell.
- the cell in the candidate handover cell is selected as a wireless local area network cell, and at least one of the reception quality, the reception level, and the signal-to-noise ratio meets a predetermined condition as the handover target cell.
- the cell serves as a handover target cell.
- the preset rule includes: first selecting a macro cell, if there is no macro cell in the candidate switching cell, then The pico cell is selected, and if there is no pico cell in the candidate handover cell, the wireless local area network cell is selected.
- the cell type in the candidate handover cell is a micro cell, and at least one of the reception quality, the reception level, and the signal-to-noise ratio meets a predetermined condition. If the target cell is not in the candidate handover cell, the cell in the candidate handover cell is a macro cell, and at least one of the reception quality, the reception level, and the signal-to-noise ratio meets the predetermined condition as the handover target cell.
- the cell type of the candidate handover cell is selected as the pico cell, and the cell whose at least one of the reception quality, the reception level, and the signal-to-noise ratio meets the predetermined condition is used as the cell of the handover target cell.
- Switching the target cell if there is no pico cell in the candidate handover cell, selecting the cell type in the candidate handover cell as the wireless local area network, and receiving quality and receiving level A cell that meets a predetermined condition and at least one of the signal-to-noise ratios is used as a handover target cell.
- the preset rule includes: first selecting a wireless local area network cell, if there is no wireless local area network cell in the candidate switching cell, Then, the micro cell is selected again, and if there is no micro cell in the candidate handover cell, the macro cell is selected again.
- the cell type in the candidate switching cell is a pico cell, and at least one of the receiving quality, the receiving level, and the signal-to-noise ratio meets the predetermined condition. If the pico cell is not present in the candidate handover cell, the cell type of the candidate handover cell is a wireless local area network, and at least one of the reception quality, the reception level, and the signal-to-noise ratio meets a predetermined condition as a handover target.
- the cell of the candidate handover cell is selected as a micro cell, and at least one of the reception quality, the reception level, and the signal-to-noise ratio meets the predetermined condition as the handover target cell.
- the cell is used as the handover target cell; if there is no micro cell in the candidate handover cell, the cell in the candidate handover cell is selected as the macro cell, and at least one of the reception quality, the reception level, and the signal-to-noise ratio meets the predetermined condition as the handover.
- the cell of the target cell serves as a handover target cell.
- Step 401 Acquire a moving speed of the terminal.
- Step 402 Determine whether the moving speed level of the terminal is high speed, medium speed or low speed. If it is high speed step 403, if it is medium speed step 408, if it is low speed step 411.
- Step 403 Determine whether there is a macro cell in the candidate handover cell, and if yes, go to step 415, if no, go to step 404;
- Step 404 Determine whether there is a micro cell in the candidate handover cell, and if yes, go to step 415, if no, go to step 405;
- Step 405 Determine whether there is a pico cell in the candidate handover cell, and if yes, go to step 415, if no, go to step 406;
- Step 406 Determine whether there is a WLAN neighboring cell in the candidate switching cell, and if yes, go to step 415;
- Step 407 Determine whether there is a micro cell in the candidate handover cell, and if yes, go to step 415, if no, go to step 408;
- Step 408 Determine whether there is a macro cell in the candidate handover cell, and if yes, go to step 415, if no, go to step 409;
- Step 409 Determine whether there is a pico cell in the candidate handover cell, and if yes, go to step 415, if no, go to step 410;
- Step 410 Determine whether there is a WLAN neighboring cell in the candidate switching cell, and if yes, go to step;
- Step 411 Determine whether there is a pico cell in the candidate handover cell, and if yes, go to step 415, if no, go to step 412;
- Step 412 Determine whether there is a WLAN neighboring cell in the candidate switching cell, and if yes, go to step 415, if no, go to step 413;
- Step 413 Determine whether there is a micro cell in the candidate handover cell, and if yes, go to step 415, if no, go to step 414;
- Step 414 Determine whether there is a macro cell in the candidate handover cell, and if yes, go to step 415;
- Step 415 Select, as the handover target cell, a cell that determines that at least one of the reception quality, the reception level, and the signal-to-noise ratio of the existing cell meets the predetermined condition.
- the source cell where the terminal is located is LTE.
- the terminal service is a high-rate and low-latency service (that is, a service that requires high bearer), and is moving at a high speed when switching is required.
- the wireless load of the A cell is 0.6, the return load is 0.3; the wireless load of the B cell is 0.4, the backhaul load is 0.5; the wireless load of the C cell is 0.8, the return load is 0.5; the radio load of the D cell is 0.7, and the backhaul is The load is 0.8; the E-cell wireless load is 0.6, and the return load is 0.6.
- the service is a high-rate and low-latency service
- the priority list of the cells to be switched is A, B, E, C, and D according to the load factor
- the initial to-be-switched cell can be selected according to the preset load factor threshold range. For example, when the preset load factor threshold is 0.6, the cell with the load factor less than 06 is selected as the initial to-be-switched cell, and the candidate handover cell list is obtained: A, B, E.
- the moving speed level is high speed, and the candidate switching cell list is queried whether there is a macro cell, and there are macro cells A and B in the list.
- Embodiment 2 is a diagrammatic representation of Embodiment 1:
- this embodiment provides a cell switching apparatus, which specifically includes: a speed acquiring module, a cell selecting module, and a cell switching module;
- the speed acquisition module is configured to acquire a moving speed of the terminal
- the cell selection module is configured to select a handover target cell from the candidate handover cells according to the moving speed of the terminal;
- the cell switching module is configured to switch the terminal to the handover target cell.
- the cell switching apparatus considers the moving speed factor of the terminal in the cell handover, determines an appropriate handover target cell according to the terminal moving speed, and avoids the existing cell handover. Considering the frequent switching of the terminal caused by the moving speed of the terminal, the switching effect is optimized and the user experience is improved.
- a modification of the embodiment is: when the current service of the terminal has a high bearer requirement, the candidate cell includes: a cell in a neighboring cell of the source cell that meets a preset condition, where The load includes a radio resource load and/or a backhaul load; when the current service of the terminal is low on the bearer, the candidate cell includes: a neighboring cell of the source cell.
- the cell handover apparatus considers not only the terminal moving speed but also other factors, such as the radio resource load of the neighboring cell and the backhaul link load, and finally selects the most suitable handover target cell, thereby solving the existing
- the cell handover method does not take into account the problems caused by this factor, such as the problem that the base station is heavy, the service scheduling pressure is large, the terminal cannot be implemented, and the terminal frequently switches.
- the cell selection module includes: a level determining module, a type determining module, and a target cell selecting module;
- the level determining module is configured to determine a moving speed level of the terminal
- the type determining module is configured to determine a cell type corresponding to the moving speed level
- the target cell determining module is configured to select the handover target cell from the candidate handover cells according to the cell type determined by the type determining module.
- the target cell selection module is configured to select, in the candidate handover cell, the determined cell type, and at least one of a reception quality, a reception level, and a signal to noise ratio meets a predetermined condition.
- the cell serves as a handover target cell.
- the moving speed level includes: high speed, medium speed, and low speed;
- the type determination module is configured to:
- the moving speed level is medium speed
- determining that the cell type corresponding to the medium speed is a micro cell
- the moving speed level is low speed, it is determined that the cell type corresponding to the low speed is a pico Area.
- the type determining module is further configured to: when there is no cell type corresponding to the moving speed level in the candidate switching cell, the cell included in the candidate switching cell according to a preset rule Select a cell type from the type.
- the preset rule when the moving speed level is high speed and the macro cell is not in the candidate switching cell, the preset rule includes: first selecting a micro cell, if there is no micro cell in the candidate switching cell Then, the pico cell is selected again, and if the pico cell is not stored in the candidate handover cell, the cell type is selected as a wireless local area network;
- the preset rule includes: first selecting a macro cell, and if there is no macro cell in the candidate switching cell, selecting a pico a cell, if there is no pico cell in the candidate handover cell, then selecting a wireless local area network;
- the preset rule includes: first selecting a WLAN cell, if there is no WLAN cell in the candidate switching cell, then The micro cell is selected, and if there is no micro cell in the candidate handover cell, the macro cell is selected again.
- the cell switching apparatus of this embodiment considers factors such as the load of the neighboring cell, the moving speed of the terminal, and the requirement of the terminal service for the bearer, thereby determining that the most suitable target cell is avoided, and the existing cell handover is avoided without considering the load of the neighboring cell.
- the base station load caused by the moving speed of the terminal is large, the terminal service cannot be realized, the terminal frequently switches, the load of the communication system is reduced, the switching effect is optimized, and the user experience is improved.
- Embodiments of the present invention also provide a computer storage medium in which computer executable instructions are stored, the computer executable instructions being used to perform the above method.
- Each of the above units may be a central processing unit (CPU), a digital signal processor (DSP) or a programmable logic array in an electronic device.
- CPU central processing unit
- DSP digital signal processor
- FPGA Field-Programmable Gate Array
- embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention can take the form of a hardware embodiment, a software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.
- the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
- the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
- These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
- the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.
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Abstract
本发明公开了小区切换方法和装置、计算机存储介质，该方法包括：获取终端的移动速度；根据所述终端的移动速度从候选切换小区中选取切换目标小区，将所述终端切换到所述切换目标小区。该装置包括：速度获取模块、小区选取模块和小区切换模块；其中，所述速度获取模块配置为获取终端的移动速度；所述小区选取模块配置为根据所述终端的移动速度从候选切换小区中选取切换目标小区；所述小区切换模块配置为将所述终端切换到所述切换目标小区。
Description
本发明涉及无线通信技术领域，尤其涉及到一种小区切换方法和装置、计算机存储介质。
当前，随着无线通信的发展，特别是4G技术以及未来5G技术的大规模普及，无线的蜂窝小区分布呈现出多模态势，GSM，UMTS，LTE，TDSCDMA，CDMA等无线制式并存，这使得小区的分布呈现出宏小区，微小区，毫微小区，微微小区的垂直分布结构；与此同时，无线局域网WLAN的分布也越来越广泛，并且与多模无线制式的小区存在越来越多的交互，并逐渐走向融合。在融合的异构网架构下，多模的不同制式之间，以及与WLAN之间经常需要进行切换。
目前的切换只是考虑了源信道、目标信道的电平或者信噪比、质量、以及终端本身所做的业务对承载的要求，主要包括所需要的时延和误码率要求等，这些在异构网下，显现出越来越多的问题，比如：
当终端的移动速度比较快时，终端可能会从微小区切换到微小区，不断在微小区间切换，造成频繁的切换，加大网络的切换信令负荷，造成用户业务的中断或者延时，降低用户的感受。终端也可能从WLAN直接切换到微小区，造成频繁切换。
发明内容
本发明要解决的主要技术问题是，提供一种小区切换方法和装置、计算机存储介质，能够解决目前小区切换中存在终端频繁发生切换的技术问
题。
为解决上述技术问题，本发明实施例提供一种小区切换方法，包括：
获取终端的移动速度；
根据所述终端的移动速度从候选切换小区中选取切换目标小区，将所述终端切换到所述切换目标小区。
一具体实施例中，所述候选切换小区包括：源小区的邻小区或源小区的邻小区中负荷满足预设条件的小区，所述负荷包括无线资源负荷和/或回传负荷。
一具体实施例中，所述根据所述终端的移动速度从候选切换小区中选取切换目标小区，包括：
确定所述终端的移动速度级别；
确定与所述移动速度级别对应的小区类型；
根据确定的小区类型，从所述候选切换小区中选取所述切换目标小区。
一具体实施例中，所述根据确定的小区类型，从所述候选切换小区中选取所述切换目标小区，包括：
选取所述候选切换小区中与所述确定的小区类型相符，且接收质量、接收电平、信噪比中的至少一项满足预定条件的小区作为切换目标小区。
一具体实施例中，所述移动速度级别包括：高速、中速和低速；
所述确定与所述移动速度级别对应的小区类型，包括:
当所述移动速度级别为高速时，确定与高速对应的小区类型为宏小区；
当所述移动速度级别为中速时，确定与中速对应的小区类型为微小区；
当所述移动速度级别为低速时，确定与低速对应的小区类型为微微小区。
一具体实施例中，所述方法还包括：当所述候选切换小区中不存在与所述移动速度级别对应的小区类型时，按照预设规则从所述候选切换小区
所包括的小区类型中选取一种小区类型，根据该选取的小区类型，从所述候选切换小区中确定所述切换目标小区。
一具体实施例中，当所述移动速度级别为高速并且所述候选切换小区中不存在宏小区时，所述预设规则包括:先选取微小区，如果所述候选切换小区中不存在微小区，则再选取微微小区，如果所述候选切换小区中不存微微小区，则再选取小区类型为无线局域网小区；
当所述移动速度级别为中速并且所述候选切换小区中不存在微小区时，所述预设规则包括：先选取宏小区，如果所述候选切换小区中不存在宏小区，则再选取微微小区，如果所述候选切换小区中不存在微微小区，则再选取无线局域网小区；
当所述移动速度级别为中速并且所述候选切换小区中不存在微微小区时，所述预设规则包括：先选取无线局域网小区，如果所述候选切换小区中不存在无线局域网小区，则再选取微小区，如果所述候选切换小区中不存在微小区，则再选取宏小区。
同样为了解决上述的技术问题，本发明实施例还提供了一种小区切换装置，包括：速度获取模块、小区选取模块和小区切换模块；
所述速度获取模块配置为获取终端的移动速度；
所述小区选取模块配置为根据所述终端的移动速度从候选切换小区中选取切换目标小区；
所述小区切换模块配置为将所述终端切换到所述切换目标小区。
一具体实施例中，所述小区选取模块配置为根据所述终端的移动速度，从源小区的邻小区或源小区的邻小区中负荷满足预设条件的小区中选取切换目标小区，所述负荷包括无线资源负荷和/或回传负荷。
一具体实施例中，所述小区选取模块包括：级别确定模块、类型确定模块和目标小区选取模块；
所述级别确定模块配置为确定所述终端的移动速度级别；
所述类型确定模块配置为确定与所述移动速度级别对应的小区类型；
所述目标小区确定模块配置为根据所述类型确定模块确定的小区类型，从所述候选切换小区中选取所述切换目标小区。
一具体实施例中，所述目标小区选取模块配置为选取所述候选切换小区中与所述确定的小区类型相符，且接收质量、接收电平、信噪比中的至少一项满足预定条件的小区作为切换目标小区。
一具体实施例中，所述移动速度级别包括：高速、中速和低速；
所述类型确定模块配置为：
当所述移动速度级别为高速时，确定与高速对应的小区类型为宏小区；
当所述移动速度级别为中速时，确定与中速对应的小区类型为微小区；
当所述移动速度级别为低速时，确定与低速对应的小区类型为微微小区。
一具体实施例中，所述类型确定模块还配置为：当所述候选切换小区中不存在与所述移动速度级别对应的小区类型时，按照预设规则从所述候选切换小区所包括的小区类型中选取一种小区类型。
一具体实施例中，当所述移动速度级别为高速并且所述候选切换小区中不存在宏小区时，所述预设规则包括:先选取微小区，如果所述候选切换小区中不存在微小区，则再选取微微小区，如果所述候选切换小区中不存微微小区，则再选取小区类型为无线局域网小区；
当所述移动速度级别为中速并且所述候选切换小区中不存在微小区时，所述预设规则包括：先选取宏小区，如果所述候选切换小区中不存在宏小区，则再选取微微小区，如果所述候选切换小区中不存在微微小区，则再选取无线局域网小区；
当所述移动速度级别为中速并且所述候选切换小区中不存在微微小区
时，所述预设规则包括：先选取无线局域网小区，如果所述候选切换小区中不存在无线局域网小区，则再选取微小区，如果所述候选切换小区中不存在微小区，则再选取宏小区。
本发明实施例还提供了一种计算机存储介质，其中存储有计算机可执行指令，所述计算机可执行指令用于执行上述的方法。
本发明实施例提供了一种小区切换方法和装置、计算机存储介质，考虑了速度因素来实现小区的切换，使终端不频繁切换小区；具体地，本发明实施例的小区切换方法包括：获取终端的移动速度；根据所述终端的移动速度从候选切换小区中选取切换目标小区，将所述终端切换到所述切换目标小区；本发明实施例提供的小区切换方法考虑了终端的移动速度因素，根据移动速度确定合适的切换目标小区，避免了现有小区切换未考虑终端的移动速度所带来的终端频繁发生切换问题，优化了切换的效果，提升了用户体验。一具体实施例中，当所述终端当前业务对承载要求高时，所述候选小区包括：源小区的邻小区中负荷满足预设条件的小区，所述负荷包括无线资源负荷和/或回传负荷；当所述终端当前业务为对承载要求低时，所述候选小区包括：源小区的邻小区；可见本发明实施例的小区方法在考虑到终端移动速度的基础上还进一步考虑到邻近小区的负荷和终端业务对承载要求这些因素，确定最合适的目标小区，避免了现有小区切换不考虑邻近小区的负荷和终端的移动速度所带来了的基站负荷大、终端业务无法实现，终端频繁发生切换问题，减小通信系统的负荷，进一步地，优化了切换的效果，提升了用户体验。
图1为本发明实施例一提供的一种小区切换方法的流程示意图；
图2为本发明实施例一提供的另一种小区切换方法的流程示意图；
图3为本发明实施例一提供的一种小区切换方法中根据移动速度选取
切换目标小区的流程示意图；
图4为本发明实施例一提供的另一种小区切换方法中根据移动速度选取切换目标小区的流程示意图；
图5为本发明实施例二提供的一种小区切换装置的结构示意图；
图6为本发明实施例二提供的一种小区切换装置的结构示意图。
下面通过具体实施方式结合附图对本发明作进一步详细说明。
实施例一：
考虑到目前小区切换方法未考虑终端的移动速度导致终端频繁发生切换的问题，；本实施例提供了一种小区切换方法，如图1所示，包括如下步骤：
步骤101：获取终端的移动速度。
本实施例方法中可以采用如下两种方式来获取终端的移动速度：
第一种，速度由基站进行测量，基站可利用MIMO、频偏估计等技术实现测量。
第二种，速度由终端进行测量，终端可通过自身的传感器等测量器件实现速度的准确测量。测量报告周期性上报给基站，具体传输时可直接在测量报告消息的最后增加速度测量字段。
步骤102：根据所述终端的移动速度从候选切换小区中选取切换目标小区，将所述终端切换到所述切换目标小区。
本实施例中切换目标小区为终端最终需要切换到的邻近小区。
本实施例方法在在小区切换时考虑了终端的移动速度因素，根据终端移动速度确定合适的切换目标小区，避免了现有小区切换未考虑终端的移动速度所带来的终端频繁发生切换问题，优化了切换的效果，提升了用户体验。
进一步考虑到在切换过程中通常某些基站的负荷很高，加大了调度的压力；另外一些要求速率快时延低的业务会由于回传链路的时延过大或者负荷过大，导致业务做不起来，即终端业务无法实现。具体地在小区切换时：
如果不考虑基站的空口负荷，会导致基站的负荷很高，加大调度的压力。
如果不考虑基站的回传负荷(回传链路负荷)，实际会导致业务要求时延低，速率快的业务即使切换到目标基站，也会因为回传链路的时延过大或者负荷过大，导致业务做不起来，即终端业务无法实现。
为了克服上述因素导致的基站负荷大、业务调度压力大、终端无法实现的问题；本实施例方法中，对候选切换小区做如下限定：
当所述终端当前业务对承载要求高时，所述候选小区包括：源小区的邻小区中负荷满足预设条件的小区，所述负荷包括无线资源负荷和/或回传负荷；
当所述终端当前业务为对承载要求低时，所述候选小区包括：源小区的邻小区。
从上述方案可以看出，本实施例方法小区切换方法可以首先考虑终端业务对承载的要求，针对不同业务要求采用不同的方法确定切换目标小区，在终端当前业务对承载要求高的情况下，还需要考虑小区的负荷，根据负荷来筛选出候选切换小区，然后可以考虑终端的移动速度，从候选切换小区中筛选出合适的最终需要切换到的目标小区，即切换目标小区，最后切换到该目标小区；在终端当前业务对承载要求低的情况下，直接根据移动速度从邻小区中选取切换目标小区；可见本实施例方法，相比现有小区切换方法，综合考虑到更多的因素，例如邻近小区的无线资源负荷、回传链路负荷以及终端的移动速度，从而解决了现有小区切换方法未考虑到这里
因素所带来的问题，例如基站负荷大、业务调度压力大、终端无法实现和终端频繁发生切换的问题。
根据上述所述的小区切换方法，如图2所示，本实施例提供的小区切换方法，可以具体包括如下步骤：
步骤201：根据终端当前业务对承载的要求判断所述终端当前业务为对承载要求高的业务还是对承载要求低的业务，若是对承载要求高的业务转步骤202，若是对承载要求低的业务转步骤203。
本实施例方法可以根据终端当前业务对承载的要求，将终端业务划分成两大类，对承载要求高的业务和对承载要求低的业务；具体地，终端业务对承载的要求可以包括业务所需的速率要求、时延要求、误码率要求中的至少一种。
本实施例方法中当终端业务对承载的要求包括速率要求和时延要求时，可以将终端业务划分成较高速率较低时延的业务和较低速率较高时延的业务。
步骤202：从所述终端所在源小区的邻近小区中选取负荷满足预设条件的小区作为候选切换小区，所述负荷包括无线资源负荷和/或回传负荷，转步骤204。
本实施例中邻近小区的负荷包括无线资源负荷和/或回传负荷；无线资源负荷指的邻近小区中基站的空口负荷，回传负荷指的是邻近小区中基站的回传链路负荷。
本实施例方法中可以采用如下两种方式来获取邻近小区基站的空口负荷和回传链路负荷信息，即邻近小区的无线资源回传负荷信息：
第一种，通过基站间的互联接口，比如LTE基站间的X2接口，共享负荷信息，此信息的周期性更新时间可以配置，同时，核心网需要知道其管理的基站的负荷信息，这可通过核心网与无线接入网的接口获得。
第二种，基站将负荷信息通过接口报给核心网，核心网再将此信息转发给基站。
优先地，步骤202预设条件可以具体包括：从所述终端所在源小区的邻近小区中选取负荷小于某个预设阈值的小区作为候选切换小区；例如当小区的负荷包括：无线资源负荷时，获取各个领近小区的无线资源负荷大小，然后选取无线资源负荷小于预设阈值的小区作为候选切换小区；又例如，当小区的符合包括：无线资源负荷和回传负荷；获取各个邻近小区的无线资源负荷和回传负荷，然后根据各个邻近小区的无线资源负荷和回传负荷计算出各个邻近小区的平均负荷，选取平均负荷小于预设阈值的小区作为候选切换小区。
步骤203：将所述终端所在源小区的邻近小区直接作为候选切换小区，转步骤204。
步骤204：根据所述终端的移动速度从所述候选切换小区中选取切换目标小区。
本实施例方法对于对承载要求高的业务，综合考虑邻近小区负荷以及终端的移动速度来确定最优的目标小区，避免了在小区切换未考虑无线资源负荷和/或回传负荷导致的基站负荷大和/或业务无法实现的问题，还避免了未考虑终端的移动速度导致终端频繁发生切换的问题。
本实施例方法对于对承载要求低的业务，可以考虑终端的移动速度从源小区的邻近小区中选取出最终需要切换的目标小区，其可以不考虑小区的负荷，避免了终端频繁发生切换。
步骤205：将所述终端从所述源小区切换到所述切换目标小区。
本实施例提供的小区切换方法综合考虑了邻近小区的负荷、终端的移动速度和终端业务对承载的要求这些因素，从而确定除最合适的目标小区，避免了现有小区切换不考虑邻近小区的负荷和终端的移动速度所带来了的
基站负荷大、终端业务无法实现，终端频繁发生切换问题，减小通信系统的负荷，优化了切换的效果，提升了用户体验。
下面具体介绍本实施例方法中根据所述终端的移动速度从候选切换小区中选取切换目标小区的过程：
如图3所示，在本实施例中，上述步骤102或者步骤204可以具体包括：
步骤301：确定所述终端的移动速度级别。
优先地，本实施例中终端的移动速度级别可以划分为三个级别，高速、中速、低速；具体划分方式可以根据预设的两个速度阈值来划分。例如分别设置两个速度门限，为Vhigh和Vlow，当终端的实际移动速度，V>Vhigh时为高速；V<Vlow时为低速；介于二者之间时为中速。
本实施例中终端的移动速度级别不仅限与三个级别，还可以划分为两个或者三个以上的级别，具体划分级别的数量可以根据小区切换的环境或者实际需求来确定。
步骤302：确定与所述移动速度级别对应的小区类型。
本实施例方法可以在确定移动速度级别之后，还需要确定与速度级别的小区类型，从而选取切换目标小区。
一具体实施例中，当所述移动速度级别包括：高速、中速和低速的情况下；当所述移动速度级别为高速时，确定与高速对应的小区类型为宏小区；当所述移动速度级别为中速时，确定与中速对应的小区类型为微小区；当所述移动速度级别为低速时，确定与低速对应的小区类型为微微小区。
步骤303：根据确定的小区类型，从所述候选切换小区中选取所述切换目标小区。
步骤303可以具体包括：选取所述候选切换小区中与所述确定的小区类型相符的小区作为切换目标小区。
为了进一步选取最合适的目标小区，提升小区切换效果，在选择切换目标小区时还可以考虑小区接收质量、接收电平和信噪比中的至少一种；因此，上述步骤303还可以包括：选取所述候选切换小区中与所述确定的小区类型相符，且接收质量、接收电平、信噪比中的至少一项满足预定条件的小区作为切换目标小区。
本实施例中预定条件可以为接收质量、接收电平、信噪比中的至少一项高于某个阈值。
考虑到上述小区切换方法中可能会存在候选切换小区中不存在与所述移动速度级别对应的小区类型的情况，导致本实施例小区切换方法适用性差的问题；
本实施例提供的小区切换方法还可以当所述候选切换小区中不存在与所述移动速度级别对应的小区类型时，按照预设规则从所述候选切换小区所包括的小区类型中选取一种小区类型，根据该选取的小区类型，从所述候选切换小区中确定所述切换目标小区。具体地：
当所述终端的移动速度级别为高速时并且所述候选切换小区中不存在宏小区时，当所述终端当前的移动速度为中速并且所述候选切换小区中不存在微小区时，以及当所述终端当前的移动速度为低速并且所述候选切换小区中不存在微微小区时：按照预设规则从所述候选切换小区所包括的小区类型中选取一种小区类型，根据该选取的小区类型，从所述候选切换小区中确定所述切换目标小区。
下面具体介绍在候选切换小区中不存在与所述移动速度级别对应的小区类型的情况下，本实施例方法具体的处理过程：
1、当所述终端的移动速度级别为高速并且所述候选切换小区中不存在宏小区时，所述预设规则包括:先选取微小区，如果所述候选切换小区中不存在微小区，则再选取微微小区，如果所述候选切换小区中不存微微小区，
则再选取小区类型为无线局域网小区。
因此，本实施例方法中当终端的移动速度级别为高速时，优选候选切换小区中小区类型为宏小区，且接收质量、接收电平和信噪比中的至少一项符合预定条件的小区作为切换目标小区；若候选切换小区中不存在宏小区，则选取候选切换小区中小区类型为微小区，且接收质量、接收电平和信噪比中的至少一项符合预定条件的小区作为切换目标小区；若候选切换小区中不存在微小区，则选取候选切换小区中小区类型为微微小区，且接收质量、接收电平和信噪比中的至少一项符合预定条件的小区作为切换目标小区的小区作为切换目标小区；若候选切换小区中不存在微微小区，则选取候选切换小区中小区类型为无线局域网小区，且接收质量、接收电平和信噪比中的至少一项符合预定条件的小区作为切换目标小区的小区作为切换目标小区。
2、当所述移动速度级别为中速并且所述候选切换小区中不存在微小区时，所述预设规则包括：先选取宏小区，如果所述候选切换小区中不存在宏小区，则再选取微微小区，如果所述候选切换小区中不存在微微小区，则再选取无线局域网小区。
因此，本实施例方法中当终端的移动速度级别为中速时，优选候选切换小区中小区类型为微小区，且接收质量、接收电平和信噪比中的至少一项符合预定条件的小区作为切换目标小区；若候选切换小区中不存在微小区，则选取候选切换小区中小区类型为宏小区，且接收质量、接收电平和信噪比中的至少一项符合预定条件的小区作为切换目标小区；若候选切换小区中不存在宏小区，则选取候选切换小区中小区类型为微微小区，且接收质量、接收电平和信噪比中的至少一项符合预定条件的小区作为切换目标小区的小区作为切换目标小区；若候选切换小区中不存在微微小区，则选取候选切换小区中小区类型为无线局域网小区，且接收质量、接收电平
和信噪比中的至少一项符合预定条件的小区作为切换目标小区的小区作为切换目标小区。
3、当所述移动速度级别为中速并且所述候选切换小区中不存在微微小区时，所述预设规则包括：先选取无线局域网小区，如果所述候选切换小区中不存在无线局域网小区，则再选取微小区，如果所述候选切换小区中不存在微小区，则再选取宏小区。
因此，本实施例方法中当终端的移动速度级别为中速时，优选候选切换小区中小区类型为微微小区，且接收质量、接收电平和信噪比中的至少一项符合预定条件的小区作为切换目标小区；若候选切换小区中不存在微微小区，则选取候选切换小区中小区类型为无线局域网小区，且接收质量、接收电平和信噪比中的至少一项符合预定条件的小区作为切换目标小区；若候选切换小区中不存在无线局域网小区，则选取候选切换小区中小区类型为微小区，且接收质量、接收电平和信噪比中的至少一项符合预定条件的小区作为切换目标小区的小区作为切换目标小区；若候选切换小区中不存在微小区，则选取候选切换小区中小区类型为宏小区，且接收质量、接收电平和信噪比中的至少一项符合预定条件的小区作为切换目标小区的小区作为切换目标小区。
如图4所示，具体介绍了本实施例小区切换方法中根据终端的移动速度从候选切换小区中选取切换目标小区的具体的过程：
步骤401：获取所述终端的移动速度。
本步骤中获取终端当前的移动速度的方式可以参照上述介绍的方式。
步骤402：判断所述终端的移动速度级别为高速、中速还是低速，若是高速转步骤403,若是中速转步骤408，若是低速转步骤411。
步骤403：判断候选切换小区中是否存在宏小区，若是，则转步骤415，若否，则转步骤404；
步骤404：判断候选切换小区中是否存在微小区，若是，则转步骤415，若否，则转步骤405；
步骤405：判断候选切换小区中是否存在微微小区，若是，则转步骤415，若否，则转步骤406；
步骤406：判断候选切换小区中是否存在WLAN邻区，若是，则转步骤415；
步骤407：判断候选切换小区中是否存在微小区，若是，则转步骤415，若否，则转步骤408；
步骤408：判断候选切换小区中是否存在宏小区，若是，则转步骤415，若否，则转步骤409；
步骤409：判断候选切换小区中是否存在微微小区，若是，则转步骤415，若否，则转步骤410；
步骤410：判断候选切换小区中是否存在WLAN邻区，若是，则转步骤；
步骤411：判断候选切换小区中是否存在微微小区，若是，则转步骤415，若否，则转步骤412；
步骤412：判断候选切换小区中是否存在WLAN邻区，若是，则转步骤415，若否，则转步骤413；
步骤413：判断候选切换小区中是否存在微小区，若是，则转步骤415，若否，则转步骤414；
步骤414：判断候选切换小区中是否存在宏小区，若是，则转步骤415；
步骤415：选取判断存在的小区的接收质量、接收电平和信噪比中的至少一项符合预定条件的小区作为切换目标小区。
下面举一个具体的例子来详细说明上述本实施例切换方法：
1、终端所在源小区为LTE，此小区的邻区配置有3种类型：LTE宏小
区，LTE微小区，WLAN邻区。分别是LTE宏小区A，LTE宏小区B，LTE微小区C，LTE微小区D，WLAN邻区E。终端业务是高速率低时延业务(即对承载要求高的业务)，需要切换时正在以高速移动。
2、A小区无线负荷为0.6，回传负荷为0.3；B小区无线负荷为0.4，回传负荷为0.5；C小区无线负荷为0.8，回传负荷为0.5；D小区无线负荷为0.7，回传负荷为0.8；E小区无线负荷为0.6，回传负荷为0.6。
3、计算负荷系数PA＝0.45，PB＝0.45；PC＝0.65；PD＝0.75；PE＝0.6。
4、根据业务类型判断是高速率低时延业务，根据负荷系数给出待切换小区优先级列表A，B，E，C，D；可以根据预设负荷系数阈值范围来选取初步待切换小区，例如当预设负荷系数阈值为0.6时，选取负荷系数小于06的小区为初步待切换小区，得到候选切换小区列表：A，B，E。
5、此时，移动速度级别为高速，查询候选切换小区列表是否存在宏小区，列表中存在宏小区A，B。
6、按照电平或者信噪比从大到小排序(B，A)，确定切换目标小区即B。
7、切换判决时，执行从源小区到目标小区B的切换。
实施例二：
如图5所示，本实施例提供了一种小区切换装置，具体包括：速度获取模块、小区选取模块和小区切换模块；
所述速度获取模块配置为获取终端的移动速度；
所述小区选取模块配置为根据所述终端的移动速度从候选切换小区中选取切换目标小区；
所述小区切换模块配置为将所述终端切换到所述切换目标小区。
本实施例提供的小区切换装置在小区切换时考虑了终端的移动速度因素，根据终端移动速度确定合适的切换目标小区，避免了现有小区切换未
考虑终端的移动速度所带来的终端频繁发生切换问题，优化了切换的效果，提升了用户体验。
在上述装置的基础上，本实施例的一种改进方案为：当所述终端当前业务对承载要求高时，所述候选小区包括：源小区的邻小区中负荷满足预设条件的小区，所述负荷包括无线资源负荷和/或回传负荷；当所述终端当前业务为对承载要求低时，所述候选小区包括：源小区的邻小区。
本实施例小区切换装置不仅考虑到终端移动速度还考虑到更多其他的因素，例如邻近小区的无线资源负荷、回传链路负荷，最终选取中最合适的切换目标小区，从而解决了现有小区切换方法未考虑到这里因素所带来的问题，例如基站负荷大、业务调度压力大、终端无法实现和终端频繁发生切换的问题
优先地，如图6所示，在上述装置的基础上，所述小区选取模块包括：级别确定模块、类型确定模块和目标小区选取模块；
所述级别确定模块配置为确定所述终端的移动速度级别；
所述类型确定模块配置为确定与所述移动速度级别对应的小区类型；
所述目标小区确定模块配置为根据所述类型确定模块确定的小区类型，从所述候选切换小区中选取所述切换目标小区。
一具体实施例中，所述目标小区选取模块配置为选取所述候选切换小区中与所述确定的小区类型相符，且接收质量、接收电平、信噪比中的至少一项满足预定条件的小区作为切换目标小区。
一具体实施例中，所述移动速度级别包括：高速、中速和低速；
所述类型确定模块配置为：
当所述移动速度级别为高速时，确定与高速对应的小区类型为宏小区；
当所述移动速度级别为中速时，确定与中速对应的小区类型为微小区；
当所述移动速度级别为低速时，确定与低速对应的小区类型为微微小
区。
一具体实施例中，所述类型确定模块还配置为：当所述候选切换小区中不存在与所述移动速度级别对应的小区类型时，按照预设规则从所述候选切换小区所包括的小区类型中选取一种小区类型。
一具体实施例中，当所述移动速度级别为高速并且所述候选切换小区中不存在宏小区时，所述预设规则包括:先选取微小区，如果所述候选切换小区中不存在微小区，则再选取微微小区，如果所述候选切换小区中不存微微小区，则再选取小区类型为无线局域网小区；
当所述移动速度级别为中速并且所述候选切换小区中不存在微小区时，所述预设规则包括：先选取宏小区，如果所述候选切换小区中不存在宏小区，则再选取微微小区，如果所述候选切换小区中不存在微微小区，则再选取无线局域网小区；
当所述移动速度级别为中速并且所述候选切换小区中不存在微微小区时，所述预设规则包括：先选取无线局域网小区，如果所述候选切换小区中不存在无线局域网小区，则再选取微小区，如果所述候选切换小区中不存在微小区，则再选取宏小区。
本实施例的小区切换装置考虑了邻近小区的负荷、终端的移动速度和终端业务对承载的要求这些因素，从而确定除最合适的目标小区，避免了现有小区切换不考虑邻近小区的负荷和终端的移动速度所带来了的基站负荷大、终端业务无法实现，终端频繁发生切换问题，减小通信系统的负荷，优化了切换的效果，提升了用户体验。
本发明实施例还提供了一种计算机存储介质，其中存储有计算机可执行指令，所述计算机可执行指令用于执行上述的方法。
上述各单元可以由电子设备中的中央处理器(Central Processing Unit，CPU)、数字信号处理器(Digital Signal Processor，DSP)或可编程逻辑阵
列(Field－Programmable Gate Array，FPGA)实现。
本领域内的技术人员应明白，本发明的实施例可提供为方法、系统、或计算机程序产品。因此，本发明可采用硬件实施例、软件实施例、或结合软件和硬件方面的实施例的形式。而且，本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器和光学存储器等)上实施的计算机程序产品的形式。
本发明是参照根据本发明实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
Claims (15)
- 一种小区切换方法，其中，该方法包括：获取终端的移动速度；根据所述终端的移动速度从候选切换小区中选取切换目标小区，将所述终端切换到所述切换目标小区。
- 如权利要求1所述的小区切换方法，其中：所述候选切换小区包括：源小区的邻小区或源小区的邻小区中负荷满足预设条件的小区，所述负荷包括无线资源负荷和/或回传负荷。
- 如权利要求1或2所述的小区切换方法，其中，所述根据所述终端的移动速度从候选切换小区中选取切换目标小区，包括：确定所述终端的移动速度级别；确定与所述移动速度级别对应的小区类型；根据确定的小区类型，从所述候选切换小区中选取所述切换目标小区。
- 如权利要求3所述的小区切换方法，其中，所述根据确定的小区类型，从所述候选切换小区中选取所述切换目标小区，包括：选取所述候选切换小区中与所述确定的小区类型相符，且接收质量、接收电平、信噪比中的至少一项满足预定条件的小区作为切换目标小区。
- 如权利要求3所述的小区切换方法，其中，所述移动速度级别包括：高速、中速和低速；所述确定与所述移动速度级别对应的小区类型，包括:当所述移动速度级别为高速时，确定与高速对应的小区类型为宏小区；当所述移动速度级别为中速时，确定与中速对应的小区类型为微小区；当所述移动速度级别为低速时，确定与低速对应的小区类型为微微小区。
- 如权利要求3所述的小区切换方法，其中，该方法还包括：当所述 候选切换小区中不存在与所述移动速度级别对应的小区类型时，按照预设规则从所述候选切换小区所包括的小区类型中选取一种小区类型，根据该选取的小区类型，从所述候选切换小区中确定所述切换目标小区。
- 如权利要求6所述的小区切换方法，其中，当所述移动速度级别为高速并且所述候选切换小区中不存在宏小区时，所述预设规则包括:先选取微小区，如果所述候选切换小区中不存在微小区，则再选取微微小区，如果所述候选切换小区中不存微微小区，则再选取小区类型为无线局域网小区；当所述移动速度级别为中速并且所述候选切换小区中不存在微小区时，所述预设规则包括：先选取宏小区，如果所述候选切换小区中不存在宏小区，则再选取微微小区，如果所述候选切换小区中不存在微微小区，则再选取无线局域网小区；当所述移动速度级别为中速并且所述候选切换小区中不存在微微小区时，所述预设规则包括：先选取无线局域网小区，如果所述候选切换小区中不存在无线局域网小区，则再选取微小区，如果所述候选切换小区中不存在微小区，则再选取宏小区。
- 一种小区切换装置，其中，该装置包括：速度获取模块、小区选取模块和小区切换模块；其中，所述速度获取模块配置为获取终端的移动速度；所述小区选取模块配置为根据所述终端的移动速度从候选切换小区中选取切换目标小区；所述小区切换模块配置为将所述终端切换到所述切换目标小区。
- 如权利要求8所述的小区切换装置，其中，所述小区选取模块配置为根据所述终端的移动速度，从源小区的邻小区或源小区的邻小区中负荷满足预设条件的小区中选取切换目标小区，所 述负荷包括无线资源负荷和/或回传负荷。
- 如权利要求8或9所述的小区切换装置，其中，所述小区选取模块包括：级别确定模块、类型确定模块和目标小区选取模块；所述级别确定模块配置为确定所述终端的移动速度级别；所述类型确定模块配置为确定与所述移动速度级别对应的小区类型；所述目标小区确定模块配置为根据所述类型确定模块确定的小区类型，从所述候选切换小区中选取所述切换目标小区。
- 如权利要求10所述的小区切换装置，其中，所述目标小区选取模块配置为选取所述候选切换小区中与所述确定的小区类型相符，且接收质量、接收电平、信噪比中的至少一项满足预定条件的小区作为切换目标小区。
- 如权利要求10所述的小区切换装置，其中，所述移动速度级别包括：高速、中速和低速；所述类型确定模块配置为：当所述移动速度级别为高速时，确定与高速对应的小区类型为宏小区；当所述移动速度级别为中速时，确定与中速对应的小区类型为微小区；当所述移动速度级别为低速时，确定与低速对应的小区类型为微微小区。
- 如权利要求12所述的小区切换装置，其中，所述类型确定模块还配置为：当所述候选切换小区中不存在与所述移动速度级别对应的小区类型时，按照预设规则从所述候选切换小区所包括的小区类型中选取一种小区类型。
- 如权利要求13所述的小区切换装置，其中，当所述移动速度级别为高速并且所述候选切换小区中不存在宏小区时，所述预设规则包括:先选取微小区，如果所述候选切换小区中不存在微小区，则再选取微微小区， 如果所述候选切换小区中不存微微小区，则再选取小区类型为无线局域网小区；当所述移动速度级别为中速并且所述候选切换小区中不存在微小区时，所述预设规则包括：先选取宏小区，如果所述候选切换小区中不存在宏小区，则再选取微微小区，如果所述候选切换小区中不存在微微小区，则再选取无线局域网小区；当所述移动速度级别为中速并且所述候选切换小区中不存在微微小区时，所述预设规则包括：先选取无线局域网小区，如果所述候选切换小区中不存在无线局域网小区，则再选取微小区，如果所述候选切换小区中不存在微小区，则再选取宏小区。
- 一种计算机存储介质，其中存储有计算机可执行指令，所述计算机可执行指令用于执行所述权利要求1至7任一项所述的方法。
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