CN105517077A - Network re-election and switching method, base station and mobile terminal - Google Patents
Network re-election and switching method, base station and mobile terminal Download PDFInfo
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- CN105517077A CN105517077A CN201510338386.1A CN201510338386A CN105517077A CN 105517077 A CN105517077 A CN 105517077A CN 201510338386 A CN201510338386 A CN 201510338386A CN 105517077 A CN105517077 A CN 105517077A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W36/00—Hand-off or reselection arrangements
- H04W36/14—Reselecting a network or an air interface
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- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W36/20—Performing reselection for specific purposes for optimising the interference level
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Abstract
The invention relates to a network re-election and switching method, comprising the steps of requesting a mobile terminal to report speed information; receiving a measurement report returned by the mobile terminal, the measurement report containing the speed information of the mobile terminal; and determining whether to switch the network of the mobile terminal based on the speed information. The method of the invention solves the problem that an optimal network selection and switching solution cannot be offered for special scenarios such as high-speed movement and multi-network coverage areas and network interference complex regions, enhances the ability of a mobile communication network to make optimal network re-selection and switching for more different scenarios, and improves the network access index and the satisfaction of user perception.
Description
Technical field
The present invention relates to a kind of communication system and method, especially about the device and method that network reselection and network switch.
Background technology
It is one of key technology of mobile communications network that network reselection and network switch, according to signal strength signal intensity RSRP (ReferenceSignalReceivedStrength) or signal quality RSRQ (ReferenceSignalReceivedQualit), existing mobile communications network, in network reselection and network switch, mainly judges which base station cell mobile terminal gravity treatment enters.But the gravity treatment of this dependence signal strength signal intensity (RSRP) or signal quality (RSRQ) and switching mode, to some scenes as high-speed motion, multiple network overlay area, net interference complex region etc., the optimum network reselection meeting user awareness and handover scheme cannot be provided, easily there is the phenomenon such as net drop, delay, cause user awareness and satisfaction to decline.
Summary of the invention
Embodiment of the present invention technical problem to be solved is, a kind of method that network reselection and network switch is provided, solve the optimum gravity treatment of network under complex scene and switching, make up the deficiency of existing network gravity treatment and handoff algorithms, thus improve the satisfaction of network insertion index and user awareness.
The embodiment of the present invention another technical problem to be solved is, the network equipment that a kind of network reselection and network switch is provided, solve the optimum gravity treatment of network under complex scene and switching, make up the deficiency of existing network gravity treatment and handoff algorithms, thus improve the satisfaction of network insertion index and user awareness.
In order to solve the problems of the technologies described above, first the invention provides a kind of method of network reselection and network switching, comprising: the step of request mobile terminal reported speeds information; Accept the step of the measurement report that mobile terminal is beamed back, described measurement report comprises the velocity information of mobile terminal; The step whether switching mobile terminal network is determined based on velocity information.
Described method, comprises further: after accepting the step of the measurement report that mobile terminal is beamed back, and is the step of mobile terminal select target network based on velocity information; After the step accepting the measurement report that mobile terminal is beamed back, judge the step of the speed dimension of mobile terminal based on velocity information; And select the step of multiple available network mated with speed of mobile terminal dimension.
Described method, comprises further: the step selecting one or more networks respectively with available work frequency range from described multiple available network.
Described method, when selected multiple available networks comprise lower working frequency range network and comparatively high workload frequency band network time, the step of the one or more network of described selection comprises: the step selecting the network of lower working frequency range.
Described method, comprises further: from described one or more networks, selection has the step of network as objective network of best available system type; When described one or more network comprises a 4G network and a kind of at least in 3G network and 2G network, described 4G network is chosen to be objective network; And when described one or more network comprises 3G network and 2G network and do not comprise 4G network, described 3G network is chosen to be objective network; When mobile terminal selects service for speech business, select low-frequency range network; When mobile terminal selects service for data services such as videos, by the selective sequential of 4G, 3G, 2G network, next selects low-frequency range network.
Described method, comprises further: after accepting the step of the measurement report that mobile terminal is beamed back, by the step that speed of mobile terminal and thresholding speed compare; If when speed of mobile terminal is greater than thresholding speed, be the step that mobile terminal selects an objective network based on velocity information; If when speed of mobile terminal is less than or equal to thresholding speed, judge the step whether a measurement event starts; And, if a measurement event has judged to start, determine the step switching user network.
Described method, comprises further: after accepting the step of the measurement report that mobile terminal is beamed back, by the step that the velocity bias of mobile terminal and thresholding velocity shift value compare; And, if the velocity bias of mobile terminal is greater than thresholding velocity shift value, determine the step not switching mobile terminal network.
For solving the problems of the technologies described above, the invention provides a kind of base station, comprise: the module of request mobile terminal reported speeds information, the module of the measurement report that mobile terminal receive sends, described measurement report comprises the velocity information of mobile terminal, determines whether according to the velocity information of mobile terminal the module switching mobile terminal network.
Described base station, comprises further: be the module that mobile terminal selects an objective network based on velocity information; The module of speed of mobile terminal dimension is determined based on velocity information; Select the module of the multiple networks mated with speed of mobile terminal dimension.
Described base station comprises further: the module selecting one or more networks respectively with available work frequency range from selected multiple networks.
When selected multiple available networks comprise lower working frequency range network and comparatively high workload frequency band network time, comprise further: the module selecting lower working frequency range network.
Described base station comprises further: from one or more network, select the module with the objective network of best available network system type; When described one or more network comprises a 4G network and a kind of at least in 3G network and 2G network, comprise further: select 4G network as the module of objective network.
When described one or more network comprises 3G network and 2G network and do not comprise 4G network, comprise further: select 3G network as the module of objective network.
When mobile terminal selects service for speech business, prioritizing selection low-frequency range network; When mobile terminal selects service for data services such as videos, by the selective sequential of 4G, 3G, 2G network, next selects low-frequency range network.
Especially use in high-speed mobile, mobile terminal is when carrying out data communication, prioritizing selection more AS (4G or 3G) network and then judge selected by high-level network in whether have low-frequency range channel to use, if there is low frequency channel to use, then select the module of low frequency channel further.
Described base station comprises further: module speed of mobile terminal and thresholding speed compared; If when speed of mobile terminal is greater than thresholding speed, be the module that mobile terminal selects an objective network based on velocity information; If when speed of mobile terminal is less than or equal to thresholding speed, judge the module whether a measurement event starts; If a measurement event has judged to start, determine the module switching user network; By the module that the velocity bias of mobile terminal and thresholding velocity shift value compare; And, if the velocity bias of mobile terminal is greater than thresholding velocity shift value, determine the module not switching mobile terminal network.
For solving the problems of the technologies described above, a kind of method that the present invention also provides network reselection and network to switch, comprising: the step receiving the request report velocity information sent from base station; The step of acquisition speed information; And the step of described velocity information is sent to described base station.
Described method, comprises further: after the step receiving the reported speeds information sent from base station, obtains the step of positional information; And position-based information judges the step of velocity information.
Described method comprises further: the step of described acquisition positional information, is to utilize any one in network positioning system, mobile terminal location system or network assistance navigation system to obtain positional information.
Described method, comprises further: after the step receiving the reported speeds information sent from base station, utilizes an acceleration transducer to obtain the step of acceleration information; And the step of described velocity information is resolved based on described acceleration information.
For solving the above-mentioned technical problem of the present invention, the present invention also provides a kind of mobile terminal, and it comprises: the module receiving the request report velocity information sent from base station, the module of acquisition speed information, and the module sending described velocity information to described base station.
Mobile terminal comprises further: the module obtaining positional information; And position-based information judges the module of velocity information.
Mobile terminal comprises further: utilize any one in network positioning system, mobile terminal location system or network assistance navigation system to obtain the module of positional information.
Mobile terminal comprises further: utilize acceleration transducer to obtain the module of acceleration information; And the module of described velocity information is resolved based on described acceleration information.
The beneficial effect that the present invention obtains: the method that network reselection of the present invention and network switch or base station or mobile terminal, comprise new network to select and network handoff algorithms, comprise speed dimension or the selection of speed dimension, or the extraction of speed dimension, judge on basis in signal strength signal intensity (RSRP) or signal quality (RSRQ) two dimension, add user velocity dimension, namely judge to become three-dimensional judgement from two dimension, solve tradition judge and reselection modes at high-speed motion, multiple network overlay area, the special screnes such as net interference complex region cannot provide optimum network selection and a difficult problem for handover scheme, enhance mobile communications network and formulate optimum network reselection and the ability of switching for more how different scenes, thus improve the satisfaction of network insertion index and user awareness.
Embodiments of the invention are further described below in conjunction with accompanying drawing.
Accompanying drawing explanation
Fig. 1 is the example of the communication system of the present invention of applicable various execution mode.
Fig. 2 is the network selection of the embodiment of the present invention and the information processing schematic diagram of changing method.
Fig. 3 is the network selection of the embodiment of the present invention and the flow chart of changing method.
Fig. 4 is the network equipment schematic diagram of the embodiment of the present invention.
Embodiment
Below by reference to the accompanying drawings detailed illustrating is carried out to embodiments of the invention.Label described in embodiment is used for institute's drawings attached acceptance of the bid and shows same or analogous parts.
The embodiment of the present invention is about the method for network reselection and switching, and be carry out new network based on speed dimension to select and network switches, the method at least comprises speed dimension or the selection of speed dimension, or the extraction of speed dimension.Judge on basis in signal strength signal intensity (RSRP) or signal quality (RSRQ) two dimension, add user velocity dimension or the selection of speed dimension, or the extraction of speed dimension, namely judge to become three-dimensional judgement from two dimension, for different scenes, user awareness and network resource conditions, formulate optimum network reselection and switch new algorithm.
The mobile communications network gravity treatment of consideration speed dimension disclosed by the embodiment of the present invention and the method for switching, comprise new network to select and network handoff algorithms, algorithm at least comprises speed dimension or speed dimension is selected, or the extraction of speed dimension, described speed dimension is the speed of mobile communication terminal; Described speed dimension is selected to comprise mobile communication terminal and is selected communication network according to self speed; The extraction being extracted as self velocity information of mobile communication terminal of described speed dimension; Described network selection and network switching comprise network Frequency Band Selection and switching and network type and select and switch.
Please refer to Fig. 1, the communication system 100 of the embodiment of the present invention can be used for various execution mode.This communication system 100 comprises, such as, and the first base station Enb (EvolvedNodeB) 111, second base station Enb112, the 3rd base station Enb113.First base station 111 and the second base station 112 are controlled by the first radio network controller (RNC) (RadioNetworkController) 115.3rd base station is controlled by the 2nd RNC116.First to the 3rd base station 111-113 is connected with several networks separately and provides service.As shown in Figure 1, each network 120-129 is all modeled as hexagonal community (Cell).Mobile terminal 130 is connected with the network 120 being connected to the first base station 111.The first hereinafter described base station 111 refers to serving BS 111.When mobile terminal 130 moves with speed V, as illustrated by the arrows in fig. 1, then serving BS 111 determines that the network whether connected by mobile terminal 130 switches to a network network 121-129 from network 120.
System 100 shown in Fig. 1 comprises a mobile terminal 130, three base station 111-113,10 network 120-129, but it may occur to persons skilled in the art that and realize, native system 100 also can comprise these equipment shown in Fig. 1 of more or less quantity.In addition, the embodiment of the present invention describes the various execution modes of mobile terminal and base station, but it may occur to persons skilled in the art that and realize other like device applicatory.Such as, base station also can be access point, and mobile terminal can be mobile phone terminal or access terminal.
Fig. 2 is signaling process schematic diagram corresponding to the method for network reselection and switching in the embodiment of the present invention.Please refer to Fig. 1 and Fig. 2, before described method performs, as a kind of example, mobile terminal 130 has been connected to network 120.
As shown in Figure 2, in step 210, first service base station (ServingEnb) 111 sends radio resource control RRC (RadioResourceControl) by first network 120 to mobile terminal UE 130 and connects the instruction of reshuffling (ConnectionReconfiguration), requires that mobile terminal 130 reports various metrical information to serving BS 111.Such as, serving BS 111 can require that mobile terminal 130 reports positional information and the velocity information of mobile terminal 130 to serving BS 111.
In step 212, for responding the wireless resource control connection reconfiguration instruction received, mobile terminal 130 configures connection (ConfigureConnection) and provides required metrical information to prepare to serving BS 111.In step 214, UE mobile terminal 130 obtains metrical information, treats to report to serving BS 111.Such as, mobile terminal 130 can measure the signal strength signal intensity RSRP (ReferenceSignalReceivedStrength) of each down link signal and the numerical value of signal quality RSRQ (ReferenceSignalReceivedQualit) that are sent as the second base station 112 and the 3rd base station 113 by base station 111 and contiguous base station thereof.Mobile terminal 130 also can obtain himself positional information and velocity information.
Step 216, mobile terminal 130 uploads measurement report with reporting measurement information to base station 111.This measurement report comprises, such as, RSRP and the RSRQ measured value of down link signal that serving BS 111 sends, RSRP and the RSRQ measured value of adjacent cells, and the position of mobile terminal 130 and velocity information.
Step 218, based on the information comprised in measurement report, serving BS 111 makes the decision of network reselection and switching.Such as, serving BS 111 determines the network whether switching mobile terminal 130, and determines which network mobile terminal 130 should connect.Step 220, if serving BS 111 determines that mobile terminal 130 needs handover network, serving BS 111 just sends wireless resource control connection reconfiguration signal (RRCConnectionReconfiguration) to mobile terminal 130, the new network of network ID (NetworkIdentification) that notice mobile terminal 130 should connect, also referred to as objective network (TargetNetwork).
Step 222, signal is reshuffled in the RRC connection including the network ID of objective network received by response, and UE mobile terminal 130 configures and connects and be connected with objective network.Step 224, after mobile terminal 130 is connected to objective network, mobile terminal 130 sends RRC connection to serving BS 111 and reshuffles completed signal, will be connected to the message notice base station 111 of objective network.
In above-mentioned steps 214, mobile terminal 130 can use wireless location system (WirelessLocationSystem) to obtain its positional information, and determines its velocity information based on its positional information.Such as, described wireless location system can be following the first, any one in second and third kind of system:
The first system is network positioning system (NetworkLocationSystem).This network positioning system comprises multiple fixed beacon (fixedbeacons), and fixed beacon is connected with the location service center (LocationServer) in network.Each fixed beacon receives the uplink signal (UplinkSignal) in fact simultaneously sent from mobile terminal 130, from uplink signal, extract positional parameter (LocationParameters) by same or analogous method, subsequently the positional parameter of extraction is sent to the location service center in network.According to the positional parameter that fixed beacon sends, this location service center resolves the positional information obtaining mobile terminal 130, then this positional information is sent to mobile terminal 130.In this whole process, mobile terminal 130 is responsible for sending uplink signal, does not participate in separating signal work, that is, do not participate in the work using signal acquisition positional information.
The second system is mobile terminal 130 navigation system, mobile terminal 130 receives the down link signal (DownlinkSignals) that fixed beacon sends simultaneously, from down link signal, extract positional parameter information, and send the positional parameter information of extraction to location service center in network.According to the positional parameter that mobile terminal 130 sends, location service center carries out target location and resolves, and calculates the position work and rest of mobile terminal 130, and positional information is sent to mobile terminal 130.In this whole process, mobile terminal 130 has the initiative call state all the time, and needs to position parametric solution.
The third system is network assistance navigation system: this type systematic is also based on the locate mode of mobile terminal 130, its position fixing process first detects and gather by multiple fixed beacon the uplink signal that mobile terminal 130 sends simultaneously, from uplink signal, positional parameter (LocationParameters) is extracted by same or analogous method, send mobile terminal 130 back to by counter for the positional parameter solved again, the locating module that mobile terminal 130 utilizes self integrated carries out location compute.In this type systematic, mobile terminal 130 is the sender of signal, is again the person of resolving of final position information, and whole network assistance mobile terminal 130 or mobile terminal obtain positional parameter information.
Except utilizing wireless location system to obtain except the positional information of mobile terminal 130, mobile terminal 130 also can obtain its velocity information.As a kind of embodiment, mobile terminal 130 can utilize a built-in transducer, the in-built IC piezoelectric acceleration sensor of such as mobile terminal 130 measures the acceleration information of mobile terminal 130, and mobile terminal 130 resolves its velocity information according to this acceleration information again.
The flow chart of method 300 shown in Fig. 3 is carried out network reselection and switches determining by serving BS 111.Such as, when the step 218 of Method Of Accomplishment 200 (as Fig. 2), serving BS 111 manner of execution 300.
Shown in Fig. 3, step 310, when serving BS 111 receives the information about the speed V of mobile terminal 130, serving BS 111 judges that the speed V of mobile terminal 130 belongs to any dimension in numerous predetermined speed dimension (SpeedRanges).Such as, described predetermined speed dimension (SpeedRanges) can comprise [0, V1], [V1, V2], [V3, V4] ..., [Vi, + ∞], wherein i is positive integer, and V1>0, V2>V1, V3>V2, by that analogy.
Step 312, does serving BS 111 judge that the speed V of mobile terminal 130 is greater than thresholding speed V0 (V>V0?).When the speed V of mobile terminal 130 is not more than V0 (step 312: no), then serving BS 111 performs step 326, as mentioned below.
If the speed V of mobile terminal 130 is greater than thresholding speed V0 (step 312: yes), then serving BS 111 judges whether the RSRP value of the down link signal sent to mobile terminal 130 by serving BS 111 is greater than threshold value (ThresholdValue) (step 314).In the measurement report that the mobile terminal 130 that described RSRP value is contained in step 216 (shown in Fig. 2) sends.Threshold value can be noise level (NoiseLevel) threshold value 8db.If RSRP value is not more than 8Db (step 314: no), then serving BS 111 judges the communicating interrupt between mobile terminal 130 and serving BS 111, and method 300 stops.
If RSRP value is greater than 8Db (step 314: yes), then perform step 316, serving BS 111 selects multiple or several available networks matched with mobile terminal 130 speed dimension (SpeedRange).Such as, serving BS 111 can comprise a storage device for pre-stored map, and this map comprises a series of predefined speed dimension, a series of network ID of adjacent networks and the corresponding relation (MappingRelationships) between speed dimension and network ID.Like this, once serving BS 111 judges the speed dimension of mobile terminal 130, serving BS 111 will be inquired about map thus find the network matched with mobile terminal 130 speed dimension.
Step 318, serving BS 111 selects one or more networks of best effort frequency range further from several available networks selected in step 316.Such as, preferred working frequency range take order: low-frequency range 700 ~ 900mhz and preferably 700 and/or 900mhz, Mid Frequency 1700 ~ 2100mhz and preferably 1800 and/or 2100mhz, high band 2500mhz ~ 2690mhz and preferred 2600mhz.First whether decision network has the network of the working frequency range of low frequency, intermediate frequency, high frequency to select, the network of prioritizing selection low frequency operation frequency range.If there is no the network of low-frequency range working frequency range, then determine whether that the network that there is intermediate frequency working frequency range is selective; If there is no the network of intermediate frequency working frequency range, finally judge whether that the network that there is high-frequency work frequency range is selective.
Step 320, serving BS 111 selects best available network system type further from the one or more networks selected in step 318.System type preferentially takies order: 4G → 3G → 2G.In 4G, 3G, 2G system type, priority allocation 4G, does not have 4G priority allocation 3G, does not have 3G reallocation 2G network.Such as, if serving BS 111 has selected the network of several low frequency operation frequency range in step 318, then serving BS 111 will select 4G network as the objective network of mobile terminal 130 from the network of these low frequency operation frequency ranges.
Step 322, does serving BS 111 judge that velocity bias (the avoiding pingpang handoff) VHYS of mobile terminal 130 is less than threshold-offset (VHYS<Threshold further?).Velocity bias is the change amplitude of at the appointed time speed V in section.If velocity bias VHYS is not less than threshold-offset (step 322: no), then serving BS 111 judges that the objective network selected based on the speed V of mobile terminal 130 lost efficacy, and reason is that the speed V of mobile terminal 130 changes and shows.So perform step 324, serving BS 111 determines the network not switching mobile terminal 130.Method 300 stops.
If the velocity bias VHYS of mobile terminal 130 is less than threshold-offset (step 322: yes), then perform step 326: according to the metrical information comprised in the measurement report that mobile terminal 130 is beamed back, serving BS 111 judges in its numerous measurement event, whether any one measurement event is activated (Triggered) further.List multiple measurement event (MeasurementEvents) in table 1, the implication that wherein in table 1, each english abbreviation represents is as follows:
The measurement result of Ms-Serving cell, does not consider deviation;
The frequency shift (FS) of Ofs-Serving cell;
The cell offset of Ocs-Serving cell;
The lag parameter of Hys-this event;
The side-play amount of Off-this event;
The measurement result of Mn-adjacent cell, does not consider deviation;
The frequency shift (FS) of Ofn-adjacent cell;
The cell offset of Ocn-adjacent cell;
The lag parameter of Hys-this event;
The threshold value of Thresh-this event.
Table 1
Event A1-A5 can utilize existing network as the criterion in selection, handoff algorithms.If objective network is selected, the community be connected with objective network can be used as adjacent cell.
If do not have measurement event to start (step 326: no), then perform step 324, serving BS 111 determines the network not switching mobile terminal 130.If measurement event is activated (step 326: yes), then perform step 328, serving BS 111 determines the network switching mobile terminal 130.Finally, method 300 terminates.
After method 300 terminates, if serving BS 111 determines to switch the network of mobile terminal 130 and selected target network, then serving BS 111 continues the step 220 shown in Fig. 2: send wireless resource control connection reconfiguration information to mobile terminal 130, to notify the network ID of mobile terminal 130 objective network.
In another embodiment, the such as 4G networking of a lot of country can use this frequency range of low frequency 700MHz-900MHz, so when terminal is when carrying out data communication, when especially using in mobile terminal high-speed mobile, the method that network reselection of the present invention or network switch or device, will more senior (as 4G or the 3G) network of prioritizing selection, or more AS network, and then judge selected by high-level network in whether have low-frequency range channel to use, if there is low frequency channel to use, then algorithm can select low frequency channel further.In other words, when select target network, preferentially ensure the network that communication quality is more suitable for.
Be appreciated that, speed of mobile terminal dimension extracting method, according to wireless location technology general principle be: known multiple fixed beacons (as base station, location service center) or mobile terminal, by gathering the positional parameter in wireless signal, realize resolving or estimating target location.
Wireless location system localization process flow process:
As a kind of example, in the system of LTE (LongTermEvolution) position, no matter be from mobile terminal Location Request or calling network, location service center all will be handled as follows:
(1) determine one or more reference base station, participate in one-time positioning process;
(2) reception solves from mobile terminal or base station end the positional parameter obtained;
(3) positional parameter is sent to computing module, mobile terminal locations is resolved;
(4) coordinate transform is performed;
(5) location compute result is sent back in LTE network, complete other business relevant to positional information.
Signalling interactive process between mobile terminal and location service center, first, location service center sends stationkeeping ability demand signalling, after mobile terminal receives signaling to mobile terminal, reply corresponding stationkeeping ability information, comprise available hardware resource, positioning calculation ability, signal quality etc.; Then, mobile terminal sends location assistance requests information to location service center, after location service center receives signal, reply respective secondary supplementary information, comprising the anticipation to mobile terminal locations, relevant geography information, need the localization method of employing and the form of positional parameter, this process can repeatedly completing by both sides alternately.Finally, mobile terminal resolves position signalling, obtains located in connection parameter, and parameter is returned to location service center, after utilizing located in connection parameter to complete location compute, final location information of mobile terminal and relevant instruction are sent to mobile terminal by location service center.
As a kind of execution mode, according to the define grid gravity treatment of speed dimension and network switching criterion:
(1) mobile communication terminal user speed is defined: V; Velocity bias (avoiding pingpang handoff): VHYS;
(2) not toggle speed dimension V handoff algorithms when user velocity (V) < judges speed V0, with existing network handoff algorithms;
(3) entry condition: network signal intensity RSRP is greater than minimum access signal level threshold value 8dB;
(4) network speed dimension V handoff algorithms is started when user velocity (V) > judges speed V0;
(5) frequency range takies order: low-frequency range (700 ~ 900MHz), Mid Frequency (1700 ~ 2100MHz), high band
(2500MHz ~ 2690MHz), first whether decision network has low frequency, intermediate frequency, high band network, prioritizing selection low-frequency range network, then judges whether this frequency range deposits;
(6) system type preferentially takies order: 4G → 3G → 2G, and at 4G → 3G → 2G network, priority allocation 4G, does not have 4G priority allocation 4G, and 3G, 2G do not have qualified network to be reallocation 2G network.
Network reselection and network handover routines:
(1) when measuring condition changes, eNB notifies the measuring condition (comprising position and velocity information) that UE is new;
(2) measurement report is uploaded: when meeting measurement report condition, by event report eUTRAN, content comprises: the measurement result measuring ID, the measurement result (measured value of RSRP and RSRQ) of Serving cell, adjacent cell and position and velocity information
(optional);
(3) hand off signaling flow process;
(4) condition of network speed dimension V handoff algorithms is started:
Entry condition: network signal intensity RSRP is greater than minimum access signal level threshold value 8dB,
User velocity (V) > starts network speed dimension V handoff algorithms when judging speed V0,
Frequency range takies order: low-frequency range (700 ~ 900MHz), Mid Frequency (1700 ~ 2100MHz), high band
(2500MHz～2690MHz)，
System type preferentially takies order: 4G → 3G → 2G;
(5) principle of speed dimension V handoff algorithms;
First whether decision network has low frequency, intermediate frequency, high band network, prioritizing selection low-frequency range network, then judge whether this frequency range exists 4G → 3G → 2G network, priority allocation 4G, there is no 4G priority allocation 4G, when 3G and 4G does not have qualified network to be reallocation 2G network.
Specifically, preferably, when mobile terminal selects service for speech business, preferred low-frequency range network; When mobile terminal selects service for data services such as videos, preferred sequence is 4G, 3G, 2G network, its less preferred low-frequency range network.
Figure 4 shows that the network system 400 for implementing the embodiment of the present invention.This system 400 can be realized by mobile terminal 130 or base station 111 or 112 or 113.
The system 400 that a kind of network reselection as shown in Figure 4 and network switch, comprises processor 410, memory 420 and transceiver 430.This transceiver 430 comprises the assembly of one or more transmission and/or Received signal strength and information, and this signal and information send by from system 400, or to system 400 send signal and information.Memory 420 for storing instruction, when these instructions be performed by processor 410 time, these instructions make processor 410 carry out work by the various embodiments disclosed by the present invention.Memory 420 is also for the various data of storage system 400 use.Such as, if when system 400 is used as serving BS 111, memory 420 can store the map of the corresponding relation including speed dimension and network ID.Memory 420 can be the type that any one is applicable to local technological accumulation and inheritance and the type that any applicable data storage technology can be used to operate.Such as semiconductor memory apparatus, flash memory, magnetic storage apparatus or system, light storage device or system, read-only storage or mobile memory etc.Processor 410 can be the type that any one is applicable to local technological accumulation and inheritance, one or more all-purpose computers can be comprised, the computer of special purpose, microprocessor, digital signal processor Dsps (DigitalSignalProcessors), based on the processor of polycaryon processor structure, and other processor.
As instantiation, described system 400 can be base station or mobile terminal.
Described system 400 is base station 111 or 112 or 113, it comprises: the module of request mobile terminal reported speeds information, the module of the measurement report that mobile terminal receive sends, described measurement report comprises the velocity information of mobile terminal, determines whether according to the velocity information of mobile terminal the module switching mobile terminal network.Further comprise: be the module that mobile terminal selects an objective network based on velocity information; The module of speed of mobile terminal dimension is determined based on velocity information; Select the module of the multiple networks mated with speed of mobile terminal dimension; The module of one or more networks respectively with available work frequency range is selected from selected multiple networks; When selected multiple available networks comprise lower working frequency range network and comparatively high workload frequency band network time, comprise further: the module selecting lower working frequency range network.
As another embodiment, base station also comprises: from one or more network, select the module with the objective network of best available network system type; When described one or more network comprises a 4G network and a kind of at least in 3G network and 2G network, comprise further: select 4G network as the module of objective network; And, when described one or more network comprises 3G network and 2G network and do not comprise 4G network, comprise further: select 3G network as the module of objective network; When mobile terminal selects service for speech business, select low-frequency range network; When mobile terminal selects service for data services such as videos, by the selective sequential of 4G, 3G, 2G network, next selects low-frequency range network.
As a kind of execution mode, described base station, comprises further: module speed of mobile terminal and thresholding speed compared; If when speed of mobile terminal is greater than thresholding speed, be the module that mobile terminal selects an objective network based on velocity information; If when speed of mobile terminal is less than or equal to thresholding speed, judge the module whether a measurement event starts; If a measurement event has judged to start, determine the module switching user network; By the module that the velocity bias of mobile terminal and thresholding velocity shift value compare; And, if the velocity bias of mobile terminal is greater than thresholding velocity shift value, determine the module not switching mobile terminal network.
As a kind of embodiment, when this system 400 is mobile terminal 130, it comprises: the module receiving the request report velocity information sent from base station, the module of acquisition speed information, and the module sending described velocity information to described base station.Comprise further: the module obtaining positional information; And position-based information judges the module of velocity information; Utilize any one in network positioning system, mobile terminal location system or network assistance navigation system to obtain the module of positional information.
As a kind of execution mode, mobile terminal 130 comprises the module utilizing acceleration transducer to obtain acceleration information; And the module of described velocity information is resolved based on described acceleration information.
The above is the specific embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (20)
1. a method for network reselection and network switching, comprising:
The step of request mobile terminal reported speeds information;
Accept the step of the measurement report that mobile terminal is beamed back, described measurement report comprises the velocity information of mobile terminal;
The step whether switching mobile terminal network is determined based on velocity information.
2. the method for claim 1, comprises further:
After the step accepting the measurement report that mobile terminal is beamed back, be the step of mobile terminal select target network based on velocity information; After the step accepting the measurement report that mobile terminal is beamed back, judge the step of the speed dimension of mobile terminal based on velocity information; And, select the step of multiple available network mated with speed of mobile terminal dimension.
3. method as claimed in claim 2, comprises further:
The step of one or more networks respectively with available work frequency range is selected from described multiple available network.
4. method as claimed in claim 3, it is characterized in that, when selected multiple available networks comprise lower working frequency range network and comparatively high workload frequency band network time, the step of the one or more network of described selection comprises: the step selecting the network of lower working frequency range.
5. method as claimed in claim 3, comprises further:
From described one or more networks, selection has the step of network as objective network of best available system type;
When described one or more network comprises a 4G network and a kind of at least in 3G network and 2G network, described 4G network is chosen to be objective network; When described one or more network comprises 3G network and 2G network and do not comprise 4G network, described 3G network is chosen to be objective network; And, when mobile terminal selects service for speech business, select low-frequency range network; When mobile terminal selects service for data services such as videos, by the selective sequential of 4G, 3G, 2G network, next selects low-frequency range network.
6. the method for claim 1, comprises further:
After accepting the step of the measurement report that mobile terminal is beamed back, by the step that speed of mobile terminal and thresholding speed compare; And, if when speed of mobile terminal is greater than thresholding speed, be the step that mobile terminal selects an objective network based on velocity information; If when speed of mobile terminal is less than or equal to thresholding speed, judge the step whether a measurement event starts; And if a measurement event has judged to start, determined the step switching user network.
7. the method for claim 1, comprises further:
After accepting the step of the measurement report that mobile terminal is beamed back, by the step that the velocity bias of mobile terminal and thresholding velocity shift value compare; And, if the velocity bias of mobile terminal is greater than thresholding velocity shift value, determine the step not switching mobile terminal network.
8. a base station, it is characterized in that, comprise: the module of request mobile terminal reported speeds information, the module of the measurement report that mobile terminal receive sends, described measurement report comprises the velocity information of mobile terminal, determines whether according to the velocity information of mobile terminal the module switching mobile terminal network.
9. base station as claimed in claim 8, is characterized in that, comprise further: be the module that mobile terminal selects an objective network based on velocity information; The module of speed of mobile terminal dimension is determined based on velocity information; Select the module of the multiple networks mated with speed of mobile terminal dimension.
10. base station as claimed in claim 9, is characterized in that, comprise further: the module selecting to have respectively one or more networks of available work frequency range from selected multiple networks; When selected multiple available networks comprise lower working frequency range network and comparatively high workload frequency band network time, comprise further: the module selecting lower working frequency range network.
11. base stations as claimed in claim 9, is characterized in that, comprise further: from one or more network, select the module with the objective network of best available network system type; When described one or more network comprises a 4G network and a kind of at least in 3G network and 2G network, comprise further: select 4G network as the module of objective network; When described one or more network comprises 3G network and 2G network and do not comprise 4G network, comprise further: select 3G network as the module of objective network; When mobile terminal selects service for speech business, select low-frequency range network; When mobile terminal selects service for data services such as videos, by the selective sequential of 4G, 3G, 2G network, next selects low-frequency range network.
12. base stations as claimed in claim 8, is characterized in that, comprise further: module speed of mobile terminal and thresholding speed compared; If when speed of mobile terminal is greater than thresholding speed, be the module that mobile terminal selects an objective network based on velocity information; If when speed of mobile terminal is less than or equal to thresholding speed, judge the module whether a measurement event starts; If a measurement event has judged to start, determine the module switching user network; By the module that the velocity bias of mobile terminal and thresholding velocity shift value compare; And, if the velocity bias of mobile terminal is greater than thresholding velocity shift value, determine the module not switching mobile terminal network.
The method that 13. 1 kinds of network reselections and network switch, comprising: the step receiving the request report velocity information sent from base station; The step of acquisition speed information; And the step of described velocity information is sent to described base station.
14. methods as claimed in claim 13, is characterized in that, comprise further: after the step receiving the reported speeds information sent from base station, obtain the step of positional information; And position-based information judges the step of velocity information.
15. methods as claimed in claim 14, is characterized in that, comprise further: the step of described acquisition positional information, are to utilize any one in network positioning system, mobile terminal location system or network assistance navigation system to obtain positional information.
16. methods as claimed in claim 13, is characterized in that, comprise further: after the step receiving the reported speeds information sent from base station, utilize an acceleration transducer to obtain the step of acceleration information; And the step of described velocity information is resolved based on described acceleration information.
17. 1 kinds of mobile terminals, is characterized in that, comprising: the module receiving the request report velocity information sent from base station, the module of acquisition speed information, and the module sending described velocity information to described base station.
18. mobile terminals as claimed in claim 17, is characterized in that, comprise further: the module obtaining positional information; And position-based information judges the module of velocity information.
19. mobile terminals as claimed in claim 18, is characterized in that, comprise further: utilize any one in network positioning system, mobile terminal location system or network assistance navigation system to obtain the module of positional information.
20. mobile terminals as claimed in claim 17, is characterized in that, comprise further: utilize acceleration transducer to obtain the module of acceleration information; And the module of described velocity information is resolved based on described acceleration information.
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