CN102869072A - Method and device for cell selection - Google Patents
Method and device for cell selection Download PDFInfo
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- CN102869072A CN102869072A CN2011101898329A CN201110189832A CN102869072A CN 102869072 A CN102869072 A CN 102869072A CN 2011101898329 A CN2011101898329 A CN 2011101898329A CN 201110189832 A CN201110189832 A CN 201110189832A CN 102869072 A CN102869072 A CN 102869072A
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Abstract
The invention provides a method and a device for cell selection. The method comprises the following steps: first, UE determines the existence of in-device coexistence interference therein; and second, the UE selects or preferentially selects a cell not suffering from in-device coexistence interference currently. With the method and the device provided by the invention, the purpose that a cell suffering from in-device coexistence interference currently is not taken as a target cell any longer in the process of cell selection can be achieved, frequent reconstruction operations within a short period of time after wireless link connection fails are avoided, electric energy at a terminal is saved, and the effects of improving system performances and user experience and ensuring users' quality of service (QoS) are achieved.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of cell selecting method and device.
Background technology
Along with the development of radiotechnics and intelligent terminal, for support terminal equipment user's different communication demand, need to be in integrated multiple radiotechnics in the same subscriber equipment (User Equipment is referred to as UE).
Fig. 1 is the structural representation that uses simultaneously the terminal equipment of three kinds of radiotechnicss in the correlation technique, as shown in Figure 1, in this terminal equipment, use respectively Long Term Evolution (Long Term Evolution, referred to as LTE) technology submodule 101, use WLAN (wireless local area network) (the Wireless Local Area Networks of IEEE Std 802.11 regulation and stipulations, referred to as WLAN) technology submodule 102, be wireless LAN station (Wireless Local Area Networks Station, referred to as WLAN-STA), bluetooth (Bluetooth) submodule 103 of use IEEE Std 802.15 regulation and stipulations; Submodule 101, submodule 102, link to each other by the interface (inter-radio interface) between the radiotechnics between 103 3 of the submodules, for example, link to each other by L101 between submodule 101 and the submodule 102, link to each other by L102 between submodule 102 and the submodule 103, link to each other by L103 between submodule 101 and the submodule 103, or three submodules are controlled by a public control module 104, three submodules of the terminal equipment respectively and separately corresponding opposite equip. of radiotechnics carry out radio communication, wherein submodule 101 and evolved base station (E-UTRAN NodeB, referred to as LTE eNB) 105 carry out radio communication by air interface, submodule 102 carries out radio communication with another WLAN STA106 by air interface, and submodule 103 carries out radio communication with another Bluetooth107 by air interface.
When in same terminal equipment, designing multiple radiotechnics submodule, finite volume in view of terminal equipment, certainly will mean in the terminal equipment of the radiotechnics submodule that is designed with simultaneously two or more, space length between two or more radiotechnics submodule is very little, for example only have several centimetres even several millimeter, and the space isolation between the corresponding antenna port of this two or more radiotechnics can't design enough large, cause when each radiotechnics submodule in the same terminal equipment works in adjacent frequency band, because band outward leakage (Out of band emission), spurious emissions (Spurious emissions), receiver blocks reasons such as (Blocking), when one of them radiotechnics submodule transmits, to disturb the signal of another radiotechnics submodule to receive, vice versa, and wave filter technology of the prior art can't be eliminated this adjacent frequently interference, thereby affect the communication quality of each radiotechnics submodule, claim in this area that this interference phenomenon is " mutual interference in the equipment " (In-device Coexistence Interference is referred to as ICO).
Above-mentioned UE refers to have the user communication terminal equipment of two or more radiotechnics coexistence, comprises mobile phone, smart mobile phone, portable communication device, personal data processor (Personal Digital Assistant is referred to as PDA) etc.; Two kinds of radiotechnics coexistences refer to have two or more wireless sets in UE inside; The first wireless set adopts the first radiotechnics, works under the first radio communication protocol standard, and carry out the transmitting-receiving of signal in the frequency range of agreement regulation; The second wireless set adopts the second radiotechnics, works under the second radio communication protocol standard, and carries out the transmitting-receiving of signal in the frequency range of agreement regulation, by that analogy.The frequency range of the first radiotechnics work and the frequency range of other radiotechnics work have at least part overlapping or adjoin; Wherein, the first radiotechnics can be LTE technology, universal mobile telecommunications system (Universal Mobile Telecommunication System, referred to as UMTS) technology, use the Wimax technology of IEEE 802.16 standards etc., the some work frequency of above-mentioned the first radiotechnics or the frequency of its harmonic wave have overlapping with " industry, science and medical treatment (ISM, Industrial Scientific and Medical) " frequency band or adjoin; Other radiotechnicss can be WLAN technology, Bluetooth technology, use the ZigBee technology of IEEE 802.15.4 standard etc., other radiotechnicss work in the ISM frequency band.
In the terminal equipment as shown in Figure 1, WLAN and Bluetooth work in the ISM frequency band, frequency range is 2.4GHz～2.5GHz, wherein WLAN channel (WLAN Channel) uses 2.4GHz in the ISM frequency band～2.4835GHz frequency range, and Bluetooth channel (Bluetooth Channel) uses 2.4GHz in the ISM frequency band～2.497GHz frequency range; The time division duplex of LTE (Time Division Duplex, referred to as TDD) work pattern is in frequency band 40 (Band 40) and frequency band 38 (Band 38), the frequency range of Band 40 is 2.3GHz～2.4GHz, the frequency range of Band 38 is 2.57GHz～2.62GHz, mode of frequency division duplexing (FDD, Frequency Division Duplex) uplink (Uplink Transmission), be that UE works in frequency band 7 (Band 7) to the eNB transmission, frequency range is 2.5GHz～2.57GHz, the downlink transfer of fdd mode (Downlink Transmission), namely eNB works in the 2.62GHz of Band 7～2.69GHz frequency range to UE transmission.Fig. 2 is the distribution schematic diagram of ISM frequency band and LTE frequency band in the correlation technique.As shown in Figure 2, the ISM frequency band just in time with the Band 40 of LTE tdd mode, the uplink adjacent frequency bands of LTE fdd mode Band 7, if therefore submodule 101 uses tdd mode and uses Band 40, so will the phase mutual interference between submodule 101 and submodule 102, the submodule 103, if submodule 101 uses fdd mode and uses Band 7, because upstream band and the ISM frequency band of LTE Band 7 adjoin, so the up emission of submodule 101 will be disturbed the descending reception of submodule 102 or submodule 103.
When multiple different radiotechnics coexists as in the equipment, mutual interference will reduce the communication quality of this multiple different radiotechnics in the equipment, affect user's communication experiences.For reduce in addition suppression equipment in mutual interference, guarantee the business experience that the mobile subscriber is good, to the base station, the mutual interference information that the base station reports according to UE and the strategy of base station disturb and suppress to process UE with mutual interference information reporting in the equipment, for example, adopt frequency multiplexing technique (Frequency-division multiplexing is referred to as FDM), time-division multiplex technology (Time-division multiplexing, referred to as TDM), the measures such as power control.In the handling process that above-mentioned interference suppresses, must guarantee that UE and base station keep being connected, can correctly receive the control information of base station, just can make follow-up interference suppress flow process and proceed.But the handling process that above-mentioned interference suppresses in some situation can not successful execution, for example, UE is in cell edge, radio link quality when not considering the interior mutual interference of equipment between UE and the base station is poor, after other radio-based electronic devices in the equipment are opened, in the equipment mutual interference may cause UE with mutual interference information reporting in the equipment to network side after, and before the treatment measures indication that the interference that does not receive network side feedback suppresses Radio Link Failure has just occured, lost with the base station and be connected; Perhaps when UE is able to do in time in the network side transmitting apparatus mutual interference information Radio Link Failure just not having occured, has lost with the base station and be connected.
In addition, when the solution of FDM is adopted in the base station, for example, the base station switches to UE on the frequency that can not suffer mutual interference in the equipment, if because mutual interference is very serious, Radio Link Failure has occured in handoff failure and UE, has lost with source base station to be connected, and the handling process that above-mentioned interference suppresses is just failed.Be once to switch when too early when UE judges this, although UE can select the another one residential quarter except the cell-of-origin to rebuild, the residential quarter that rebuilds still might suffer mutual interference in the equipment, rebuilds the QoS that still can't guarantee UE after finishing.
Multiple wireless technology subset in the equipment normally cooperates and carries out work, for example, WiFi subset in the UE serves as access point (the Access Point of WiFi technology, referred to as AP), UE utilizes the LTE technology from the data that eNB receives, and sends to opposite equip. by the WiFi subset again; UE utilizes the LTE technology from the speech data that eNB receives, and sends to bluetooth earphone by the BT subset in the equipment.When the LTE of UE subset and eNB lose be connected after, there are not data to send to opposite end WiFi subset or bluetooth earphone in the buffer memory, then interior other radiotechnicss of equipment also can disappear to the interference of LTE technology, when UE reselected the residential quarter, there is a strong possibility selected the Serving cell of mutual interference in the generation.If interior other radiotechnicss of equipment do not disappear to the interference of LTE technology in addition, existing residential quarter is selected or the method for measurement of cell reselection can't guarantee that the result who measures reflects real disturbed condition, even preferably illusion of the opposite cell quality of being disturbed can appear, thereby select to suffer the residential quarter of mutual interference as Serving cell, after will causing so again connecting, disturb still and exist, Radio Link Failure occurs in the short time again, rebuild frequently, to cause the power consumption of terminal, and affect systematic function and user and experience.Therefore must seek effective measures, avoid the generation of above-mentioned situation, guarantee user's QoS.
Summary of the invention
For in the correlation technique since in the equipment mutual interference cause the user that the residential quarter of mutual interference in the equipment occurs again to select to suffer behind the Radio Link Failure, affect the problem of user's experience and systematic function, the invention provides a kind of cell selecting method and device, one of to address the above problem at least.
According to an aspect of the present invention, provide a kind of cell selecting method.
Cell selecting method according to the present invention comprises: UE determines that there is mutual interference in the equipment in it; UE selects or preferentially selects the current residential quarter that does not suffer mutual interference in the equipment.
Above-mentioned UE selects or preferentially selects the current residential quarter that does not suffer mutual interference in the equipment by following mode one of at least: according to the storage Information Selection of UE or preferentially select the current residential quarter that does not suffer mutual interference in the equipment; The current residential quarter that does not suffer mutual interference in the equipment is selected or preferentially selected to the frequency of the wireless access technology RAT that supports by scanning public land mobile network PLMN.
Above-mentioned according to UE the storage Information Selection or select preferentially that current comprised by the residential quarter of mutual interference one of following: deletion suffers the information of the frequency of mutual interference in the equipment, and perhaps deletion suffers the information of the frequency of mutual interference in the equipment and the information of all residential quarters on this frequency; Suffer the frequency of mutual interference in the equipment or suffer the frequency of mutual interference in the equipment and all residential quarters on this frequency to be set to low priority, do not suffer the frequency of mutual interference in the equipment or do not suffer the frequency of mutual interference in the equipment and all residential quarters on this frequency to be set to high priority, wherein, when carrying out the flow process of selecting the residential quarter, preferentially select the residential quarter of high priority; With suffering the frequency of mutual interference in the equipment or suffering the frequency of mutual interference in the equipment and all residential quarters on this frequency are labeled as unavailablely, wherein, when carrying out the flow process of selecting the residential quarter, never be labeled as in the disabled residential quarter and select the residential quarter.
Select or preferentially select currently not suffer that the residential quarter of mutual interference comprises in the equipment by the frequency of the RAT that supports of scanning PLMN: UE will be got rid of outside the scope of scanning by the frequency of mutual interference will when the scanning frequency.
After UE selected or preferentially select the current residential quarter that does not suffer mutual interference in the equipment, also comprise: UE sent disabled frequency point information to network side corresponding to residential quarter of selecting.
Above-mentioned disabled frequency point information comprises: UE is upper can suffer or generation equipment in the center frequency information of mutual interference.
Above-mentioned UE is carried at disabled frequency point information in radio resource control RRC connection re-establishment request message or the cell update message and sends.
The above-mentioned UE of stating selects or preferentially selects after the current residential quarter that does not suffer mutual interference in the equipment, and also comprise: UE determines not exist mutual interference in the equipment; When the residential quarter is selected in UE cancellation to the frequency that suffers mutual interference and the restriction of residential quarter.
When the residential quarter is selected in above-mentioned UE cancellation the restriction of the frequency that suffers mutual interference and residential quarter is comprised one of following: UE when the scanning frequency, all frequencies of the RAT that scanning PLMN supports; With suffer the frequency of mutual interference in the equipment or suffer the frequency of mutual interference and this frequency on the priority of all residential quarters, be set to the frequency that does not suffer mutual interference in the equipment or the frequency that is disturbed and this frequency on the priority of all residential quarters be set to same value; To suffer the frequency of mutual interference in the equipment, perhaps suffer the frequency of mutual interference in the equipment and all residential quarters on this frequency to be labeled as available.
According to a further aspect in the invention, provide a kind of cell selecting apparatus.
Cell selecting apparatus according to the present invention comprises: determination module is used for determining to exist mutual interference in the equipment; Select module, be used for selection or preferentially select the current residential quarter that does not suffer mutual interference in the equipment.
Above-mentioned selection module comprise following one of at least: the first selected cell is used for according to the storage Information Selection of subscriber equipment U E or preferentially selects the current residential quarter that does not suffer mutual interference in the equipment; The current residential quarter that does not suffer mutual interference in the equipment is selected or preferentially selected to the second selected cell for the frequency of the wireless access technology RAT that supports by scanning public land mobile network PLMN.
It is one of following that above-mentioned the first selected cell comprises: the deletion subelement, be used for the information that deletion suffers the frequency of mutual interference in the equipment, and perhaps deletion suffers the information of the frequency of mutual interference in the equipment and the information of all residential quarters on this frequency; Subelement is set, be used for suffering the frequency of mutual interference in the equipment or suffer the frequency of mutual interference in the equipment and all residential quarters on this frequency to be set to low priority, do not suffer the frequency of mutual interference in the equipment or do not suffer the frequency of mutual interference in the equipment and all residential quarters on this frequency to be set to high priority, wherein, when carrying out the flow process of selecting the residential quarter, preferentially select the residential quarter of high priority; The mark subelement, be used for to suffer the frequency of mutual interference in the equipment or suffer the frequency of mutual interference in the equipment and all residential quarters on this frequency to be labeled as unavailable, wherein, when carrying out the flow process of selecting the residential quarter, never be labeled as in the disabled residential quarter and select the residential quarter.
Above-mentioned the second selected cell comprises: the scanning subelement, be used for when the scanning frequency, and will get rid of outside the scope of scanning by the frequency of mutual interference.
By the present invention, when UE determines to exist in the equipment mutual interference, UE selects or preferentially selects the current residential quarter that does not suffer mutual interference in the equipment, solved in the correlation technique since in the equipment mutual interference cause the user that the residential quarter of mutual interference in the equipment occurs again to select to suffer behind the Radio Link Failure, affect the problem of user's experience and systematic function, and then can improve the user and experience and systematic function.
Description of drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, consists of the application's a part, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is a kind of schematic diagram that uses simultaneously the terminal equipment of two or more radiotechnics;
Fig. 2 is the distribution schematic diagram of ISM frequency band and LTE frequency band;
Fig. 3 is the flow chart according to the cell selecting method of the embodiment of the invention;
Fig. 4 is the flow chart of the cell selecting method of example one according to the present invention;
Fig. 5 is the flow chart of the cell selecting method of example two according to the present invention;
Fig. 6 is the flow chart of the cell selecting method of example three according to the present invention;
Fig. 7 is the structured flowchart according to the cell selecting apparatus of the embodiment of the invention;
Fig. 8 is the structured flowchart of cell selecting apparatus according to the preferred embodiment of the invention.
Embodiment
Hereinafter also describe in conjunction with the embodiments the present invention in detail with reference to accompanying drawing.Need to prove that in the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.
Fig. 3 is the flow chart according to the cell selecting method of the embodiment of the invention, and as shown in Figure 3, the method mainly may further comprise the steps (step S302-S304):
Step S302, subscriber equipment (UE) determine that there is mutual interference in the equipment in it;
Need to prove that the definite subscriber equipment in the embodiment of the invention exists the method for mutual interference in the equipment can adopt definite method of the prior art.
Step S304, UE select or preferentially select the current residential quarter that does not suffer mutual interference in the equipment.
In embodiments of the present invention, UE can select or preferentially select the current residential quarter that does not suffer mutual interference in the equipment by following mode one of at least: (1) is according to the storage Information Selection of UE or preferentially select the current residential quarter that does not suffer mutual interference in the equipment; (2) by scanning public land mobile network (Public Land Mobile Network, referred to as PLMN) frequency of the wireless access technology (Radio Access Technology is referred to as RAT) supported selects or preferentially selects the current residential quarter that does not suffer mutual interference in the equipment.
Wherein, according to the storage Information Selection of UE or preferentially select the current residential quarter that does not suffer mutual interference in the equipment can adopt one of following mode.For example, can delete the information that suffers the frequency of mutual interference in the equipment, perhaps deletion suffers the information of the frequency of mutual interference in the equipment and the information of all residential quarters on this frequency; Suffer the frequency of mutual interference in the equipment or suffer the frequency of mutual interference in the equipment and all residential quarters on this frequency to be set to low priority, do not suffer the frequency of mutual interference in the equipment or do not suffer the frequency of mutual interference in the equipment and all residential quarters on this frequency to be set to high priority, wherein, when carrying out the flow process of selecting the residential quarter, preferentially select the residential quarter of high priority; With suffering the frequency of mutual interference in the equipment or suffering the frequency of mutual interference in the equipment and all residential quarters on this frequency are labeled as unavailablely, wherein, when carrying out the flow process of selecting the residential quarter, never be labeled as in the disabled residential quarter and select the residential quarter.
In addition, when UE scanning frequency, can get rid of the frequency that mode outside the scope of scanning realize scanning the RAT that PLMN supports by the frequency that will suffer mutual interference and select or preferentially select the current residential quarter that does not suffer mutual interference in the equipment.
In a preferred implementation of the embodiment of the invention, after UE selects or preferentially selects the current residential quarter that does not suffer mutual interference in the equipment, UE can send Radio Resource control (Radio Resource Control in corresponding base station to the residential quarter of selecting, referred to as RRC) the connection re-establishment request, wherein, this RRC connection re-establishment request comprises: disabled frequency point information; UE can also send cell update message by corresponding radio network controller to the residential quarter of selecting, wherein, this cell update message comprises: disabled frequency point information, wherein, disabled frequency point information comprises: UE is upper can suffer or generation equipment in the center frequency information of mutual interference.
In another preferred implementation of the embodiment of the invention, after UE selected or preferentially select the current residential quarter that does not suffer mutual interference in the equipment, UE can determine not exist mutual interference in the equipment; At this moment, UE can cancel when selecting the residential quarter the frequency that suffers mutual interference and the restriction of residential quarter, specifically can be in the following ways: UE when the scanning frequency, all frequencies of the RAT that scanning PLMN supports; Can with suffer the frequency of mutual interference in the equipment or suffer the frequency of mutual interference and this frequency on the priority of all residential quarters, be set to the frequency that does not suffer mutual interference in the equipment or the frequency that is disturbed and this frequency on the priority of all residential quarters be set to same value; Can also will suffer the frequency of mutual interference in the equipment, perhaps suffer the frequency of mutual interference in the equipment and all residential quarters on this frequency to be labeled as available.
For example, provide in embodiments of the present invention following three kinds of little domain scannings front set-up mode:
In a preferred implementation of example of the present invention, UE can get rid of the frequency that suffers mutual interference outside the scope of scanning when the residential quarter is scanned; Perhaps, can delete in advance the frequency point information (also can be the frequency point information of being disturbed certainly) that suffers mutual interference and the information that is positioned at all residential quarters on these frequencies.
In another preferred implementation of the embodiment of the invention, UE is when scanning the residential quarter, can suffer the frequency (also can be the frequency that is disturbed) of mutual interference and all residential quarters that are positioned on these frequencies to be set to low priority, not suffer simultaneously the frequency (also can be the frequency that does not suffer mutual interference) of mutual interference and all residential quarters that are positioned on these frequencies to be set to high priority.Based on this, when carrying out the flow process of selecting the residential quarter, can preferentially select to have the residential quarter of high priority.
In another preferred implementation of the embodiment of the invention, UE can will suffer the frequency (also can be the frequency that is disturbed) of mutual interference and all residential quarters that are positioned on these frequencies to be labeled as unavailable when the residential quarter is scanned.Like this, when carrying out the flow process of selection residential quarter, can select not to be labeled as disabled residential quarter.
Need to prove, in embodiments of the present invention, to above-mentioned three kinds of little domain scannings before set-up mode in, can adopt any execution scan operation.For example, select the flow process of residential quarter to comprise following processing:
Step 1, the residential quarter of storage information is selected, and namely carries out the residential quarter according to storage information and selects;
Step 2, initial cell are selected, and the frequency of the RAT that namely supports by scanning PLMN carries out the residential quarter and selects;
In specific implementation process, above-mentioned steps 1 and step 2 be the priority execution sequence not, can only carry out one of them step, perhaps after carrying out a step, when not choosing suitable residential quarter, carries out another step again.
Step 3, needing to rebuild RRC behind the UE change Serving cell connects, when sending the reconstruction request to network, need to report disabled frequency point information, being about to above-mentioned disabled frequency point information is carried at RRC connection re-establishment request message and sends, wherein, disabled frequency point information be on frequency point information, can suffer or generation equipment in the center frequency point information of mutual interference.
Above-mentioned steps 3 is interfered for the LTE technology and describes, if the UMTS technology is interfered, then corresponding radio network controller sends cell update message to UE to the residential quarter of selecting, wherein, cell update message comprises: disabled frequency point information, wherein, disabled frequency point information be on frequency point information, can suffer or generation equipment in the center frequency point information of mutual interference.
In embodiments of the present invention, if when UE determines not exist the interior mutual interference of equipment, can carry out the operation that cancellation is selected, to cancel the frequency that once suffers mutual interference of the aforementioned Target cell of having selected and the restriction of residential quarter.For example, behind all frequencies of scanning, the priority that can no longer suffer the frequency frequency of mutual interference (or no longer suffer) of mutual interference in the equipment and be positioned at all residential quarters on these frequencies is set to and the frequency that does not suffer the equipment mutual interference; The priority that also can not suffer the frequency of mutual interference and be positioned at all residential quarters on these frequencies is set to same value; Also can will no longer suffer the frequency (or the frequency that is disturbed) of mutual interference in the equipment and all residential quarters that are positioned on these frequencies to be labeled as available.
Fig. 4 is the flow chart of the cell selecting method of example one according to the present invention.As shown in Figure 4, this cell selecting method comprises following treatment step:
Step S402, UE report mutual interference indication or information, and the wait network is further indicated;
When UE just detects in generation mutual interference, can report the mutual interference indication to network side, perhaps help network to make and disturb the supplementary that suppresses decision-making, after network side receives indication or supplementary, can further send follow-up interference suppression measure to UE according to the disturbed condition of current network situation and UE, for example, the indication of further measuring, perhaps UE is switched to the order that does not suffer mutual interference in the equipment or be the various different operating time of wireless device configuration in the UE, it is no longer interfered with each other, when UE finish report mutual interference indication or information after, just wait for the further indication of network.
Step S404, detect Radio Link Failure (Radio Link Failure);
Do not receive the interference inhibition indication that network side sends at UE, perhaps further indication, perhaps UE does not have before the inhibition flow process of complete mutual interference, detect and eNB between Radio Link Failure, in the prior art, if UE does not recover to connect in setting time, then UE gets back to the IDLE attitude; Therefore UE can attempt seeking at the appointed time suitable residential quarter and carries out the RRC connection reconstruction.
Step S406, select target residential quarter;
UE has stored each frequency point information and the cell information of the wireless access technology (RAT) of supporting about affiliated public land mobile network (PLMN) at this moment, and the measurement result to different frequent points and different districts occurs before the Radio Link Failure.UE can carry out the residential quarter according to the content of storage and select, and this process is called the residential quarter of storage information and selects (Stored Information Cell Selection).If the content according to storage is not chosen suitable residential quarter (Suitable cell), then start initial cell and select, namely scan all frequencies of the RAT that PLMN supports, find the suitable residential quarter that can carry out therein proper communication with expectation.
In the process of select target residential quarter, because this moment, some frequency suffered mutual interference in the equipment, and UE occurs in former Serving cell, and Radio Link Failure causes just because of mutual interference, therefore UE selects those residential quarters that does not suffer mutual interference in the equipment, specifically comprises one of following processing mode:
(1) deletion suffers the frequency point information of mutual interference, the frequency point information of perhaps being disturbed and the information of all residential quarters on the frequency, in the time of can guaranteeing that like this UE carries out the Cell searching of storage information, can not select those rebuild by the residential quarter of mutual interference in the equipment, if and rebuild by the residential quarter of mutual interference probably to cause rebuilding unsuccessful, UE gets back to the IDLE attitude, and the user who affects UE experiences;
(2) will suffer the frequency of mutual interference, the frequency that is perhaps disturbed and all residential quarters on the frequency are set to low priority, the frequency of mutual interference will do not suffered, perhaps do not suffer the frequency of mutual interference and all residential quarters on the frequency to be set to high priority, when carrying out the flow process of selecting the residential quarter, preferentially select the residential quarter of high priority;
(3) will suffer the frequency of mutual interference, the frequency point information of perhaps being disturbed and all residential quarters on the frequency are labeled as unavailable, when carrying out the flow process of selecting the residential quarter, select not to be labeled as disabled residential quarter;
When (4) scanning, got rid of outside the scope of scanning by the frequency of mutual interference, UE scans those frequencies that does not suffer mutual interference, selects not suffer the residential quarter of mutual interference.
Step S408, carry out the RRC connection reconstruction at selected Target cell;
UE according to selected target residential quarter among the S406 after, in this residential quarter, carry out RRC connection reconstruction (RRC Connection Re-establ ishment), recover to connect.
When U E when sending RRC connection re-establishment request (RRC Connection Reestablishment Request) to target eN B, comprise disabled frequency point information, this disabled frequency point information be can suffer thereon or generation equipment in the center frequency point information of mutual interference, to prevent target eNB UE is switched on the disabled frequency again.
When sometime since equipment in other radiotechnics submodule device shutdowns or be tuned on the frequency that can not produce mutual interference in the equipment after, UE detects some frequency when no longer suffering in the equipment mutual interference, when UE judges when no longer having in the equipment mutual interference, during Target cell that cancellation is selected to the frequency that once suffered mutual interference and the restriction of residential quarter.Specifically comprise one of following processing mode:
(1) will no longer suffer the frequency of mutual interference in the equipment, be set to and the frequency that does not suffer mutual interference in the equipment by the priority of all residential quarters on the frequency of mutual interference and the frequency, perhaps do not suffer the priority of all residential quarters on the frequency of mutual interference and the frequency to be set to same value;
(2) will no longer suffer the frequency of mutual interference in the equipment, the frequency that is perhaps disturbed and all residential quarters on the frequency are labeled as available;
(3) when carrying out scanning, scan all frequencies.
Fig. 5 is the flow chart of the cell selecting method of example two according to the present invention.As shown in Figure 5, this cell selecting method mainly comprises following treatment step:
Step S502, UE report mutual interference indication or information failure or do not carry out;
UE detects just mutual interference in generation of Serving cell, when reporting mutual interference indication or information to network side, reports failure or does not report and carry out, and S504 has just occured.
Step S504, switch decision;
Network side is not when receiving the indication of mutual interference that UE reports or information, tactful according to measurement result and network RRM that UE reported in the past, decision allows UE carry out switching flow, and selected Target cell, but because this handover decisions is to make in the situation that lacks mutual interference information, therefore selected Target cell may suffer mutual interference in the equipment.
Step S506, switching command;
For example, network side sends switching command (Handover Command) to UE, and notice UE switches to Target cell, comprises the configuration information that UE switches to Target cell in the switching command.
Step S508, switching are finished;
UE switches to Target cell, and behind the handover success, UE sends handoff completion message to target BS, and the switching of notification target base station is finished.
Step S510, detect Radio Link Failure, lose with T-eNB and be connected;
Because this moment, Target cell suffered mutual interference in the equipment, interference may cause the descending reception of UE to make mistakes, and probably after Target cell, just detect soon Radio Link Failure at the UE successful switch, according to prior art, to think too early (Handover too early) occured to switch, UE can be reconstructed into cell-of-origin (Source Cell), but this moment, the cell-of-origin also suffered mutual interference in the equipment, if so there is mutual interference in UE judgement here, then carry out the flow process of select target residential quarter.
Step S512, select target residential quarter;
Specifically can be referring to above-mentioned steps S406.
Step S514, carry out the RRC connection reconstruction at selected Target cell;
Specifically can be referring to above-mentioned steps S408.
Fig. 6 is the flow chart of the cell selecting method of example three according to the present invention.In example one and example two, all being interfered as example take the LTE technology describes, and Fig. 6 is interfered as example take the UMTS technology and describes.In this example, subscriber equipment (UE) is intelligent terminal, UE has used two kinds of radiotechnicss, be respectively the first radiotechnics of using the UMTS technology and the second radiotechnics of using WLAN or BT technology, use the first wireless electron module of UMTS technology to be in the RRC connection status in the cell-of-origin in the current UE, this cell-of-origin is that source radio network controller (Radio Network Controller is referred to as RNC) S-RNC controls.
As shown in Figure 6, this cell selecting method mainly comprises following treatment step:
Step S602, UE report mutual interference indication or information;
At a time, use the second radio module of WLAN or BT technology to open, UE judges that mutual interference exists, and judges and need to report mutual interference information to network side, and UE reports mutual interference information to S-RNC.This step and step S402 are basically identical, and just the object that reports of UE is S-RNC rather than eNB.
Step S604, UE detect Radio Link Failure;
UE does not receive that the interference that network side sends suppresses indication, perhaps further indication, perhaps UE does not have before the inhibition flow process of complete mutual interference, the information that reports by bottom, UE judges generation Radio Link Failure (Radio Link Failure), then execution in step S606.
Cell update is initiated in step S606, UE select target residential quarter;
UE selects the process of residential quarter consistent with S303, and behind the selected target residential quarter, UE sends cell update (Cell Update) message, execution in step S608 to Target cell.
Step S608, transmission cell update message;
Initiate cell update at Target cell, send cell update (Cell Update) message to target radio network controller T-RNC.And in cell update message, comprise disabled frequency point information, wherein, this disabled frequency point information be can suffer thereon or generation equipment in the center frequency point information of mutual interference, to prevent T-RNC UE is switched on the disabled frequency again.
Step S610, network side send the cell update acknowledge message to UE;
Target cell is accepted the cell update request of UE, sends cell update to UE and confirms (Cell Update Confirm) message, and wherein, carrying Target cell in this message is the related resource information of UE configuration.
Step S612, UE detect and no longer have mutual interference, the restriction that the cancellation Target cell is selected.
When sometime since equipment in other radiotechnics submodule device shutdowns or be tuned on the frequency that can not produce mutual interference in the equipment after, UE detects some frequency when no longer suffering in the equipment mutual interference, when UE judges when no longer having in the equipment mutual interference, during Target cell that cancellation is selected to the frequency that once suffered mutual interference and the restriction of residential quarter.Specifically comprise following processing mode:
(1) will no longer suffer the frequency of mutual interference in the equipment, be set to and the frequency that does not suffer mutual interference in the equipment by the priority of all residential quarters on the frequency of mutual interference and the frequency, perhaps do not suffer the priority of all residential quarters on the frequency of mutual interference and the frequency to be set to same value;
(2) will no longer suffer the frequency of mutual interference in the equipment, the frequency that is perhaps disturbed and all residential quarters on the frequency are labeled as available;
Scan all frequencies when (3) carrying out the initial cell selection.
Fig. 7 is the structured flowchart according to the cell selecting apparatus of the embodiment of the invention, the cell selecting method that this device provides in order to implement above-described embodiment, and as shown in Figure 7, this device mainly comprises: determination module 10 and selection module 20.Wherein, determination module 10 is used for determining to exist mutual interference in the equipment; Select module 20, be used for selection or preferentially select the current residential quarter that does not suffer mutual interference in the equipment.
Fig. 8 is the structured flowchart of cell selecting apparatus according to the preferred embodiment of the invention, and as shown in Figure 8, the selection module in this device can also comprise: the first selected cell 22 and/or the second selected cell 24.Wherein, the first selected cell 22 is used for according to the storage Information Selection of UE or preferentially selects the current residential quarter that does not suffer mutual interference in the equipment; The current residential quarter that does not suffer mutual interference in the equipment is selected or preferentially selected to the second selected cell 24 for the frequency of the RAT that supports by scanning PLMN.
Wherein, above-mentioned the first selected cell 22 can also comprise that with deletion subelement 222 be used for the information that deletion suffers the frequency of mutual interference in the equipment, perhaps deletion suffers the information of the frequency of mutual interference in the equipment and the information of all residential quarters on this frequency; Subelement 224 is set, be used for suffering the frequency of mutual interference in the equipment or suffer the frequency of mutual interference in the equipment and all residential quarters on this frequency to be set to low priority, do not suffer the frequency of mutual interference in the equipment or do not suffer the frequency of mutual interference in the equipment and all residential quarters on this frequency to be set to high priority, wherein, when carrying out the flow process of selecting the residential quarter, preferentially select the residential quarter of high priority; Mark subelement 226, be used for to suffer the frequency of mutual interference in the equipment or suffer the frequency of mutual interference in the equipment and all residential quarters on this frequency to be labeled as unavailable, wherein, when carrying out the flow process of selecting the residential quarter, never be labeled as in the disabled residential quarter and select the residential quarter.
Wherein, above-mentioned the second selected cell 24 can also comprise: scanning subelement 242, be used for when the scanning frequency, and will get rid of outside the scope of scanning by the frequency of mutual interference.
It should be noted that the preferred implementation that each module mutually combines in the above-mentioned cell selecting apparatus specifically can referring to the description of Fig. 3 to Fig. 6, repeat no more herein.
The cell selecting method and the device that adopt above-mentioned enforcement to provide, when UE determines to exist in the equipment mutual interference, UE selects or preferentially selects the current residential quarter that does not suffer mutual interference in the equipment, solved in the correlation technique since in the equipment mutual interference cause the user that the residential quarter of mutual interference in the equipment occurs again to select to suffer behind the Radio Link Failure, affect the problem of user's experience and systematic function, and then can improve the user and experience and systematic function.
From above description, can find out, the present invention has realized following technique effect: relatively poor at the link-quality as UE, and do not receive before the interference suppression measure indication or do not finish before the interference suppression measure, even UE has lost network connection, still can guarantee that UE can not select to suffer in the equipment residential quarter of mutual interference to rebuild or resident owing to mutual interference in the equipment, guarantee that the RRC connection of rebuilding or setting up can not be subject to or produce mutual interference, thereby guarantee systematic function and user's business experience, and then reached the effect that guarantees user's service quality (QoS).
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, carried out by calculation element thereby they can be stored in the storage device, perhaps they are made into respectively each integrated circuit modules, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (13)
1. a cell selecting method is characterized in that, comprising:
User equipment (UE) determines that there is mutual interference in the equipment in it;
Described UE selects or preferentially selects the current residential quarter that does not suffer mutual interference in the equipment.
2. method according to claim 1 is characterized in that, described UE selects or preferentially select the current residential quarter that does not suffer mutual interference in the equipment by following mode one of at least:
According to the storage Information Selection of described UE or preferentially select the current residential quarter that does not suffer mutual interference in the equipment;
The current residential quarter that does not suffer mutual interference in the equipment is selected or preferentially selected to the frequency of the wireless access technology RAT that supports by scanning public land mobile network PLMN.
3. method according to claim 2 is characterized in that, described according to described UE the storage Information Selection or select preferentially that current comprised by the residential quarter of mutual interference one of following:
Deletion suffers the information of the frequency of mutual interference in the equipment, and perhaps deletion suffers the information of the frequency of mutual interference in the equipment and the information of all residential quarters on this frequency;
Suffer the frequency of mutual interference in the equipment or suffer the frequency of mutual interference in the equipment and all residential quarters on this frequency to be set to low priority, do not suffer the frequency of mutual interference in the equipment or do not suffer the frequency of mutual interference in the equipment and all residential quarters on this frequency to be set to high priority, wherein, when carrying out the flow process of selecting the residential quarter, preferentially select the residential quarter of high priority;
With suffering the frequency of mutual interference in the equipment or suffering the frequency of mutual interference in the equipment and all residential quarters on this frequency are labeled as unavailablely, wherein, when carrying out the flow process of selecting the residential quarter, never be labeled as in the disabled residential quarter and select the residential quarter.
4. method according to claim 2 is characterized in that, selects or preferentially select currently not suffer that the residential quarter of mutual interference comprises in the equipment by the frequency of the RAT that supports of scanning PLMN:
Described UE will be got rid of outside the scope of scanning by the frequency of mutual interference when the scanning frequency.
5. each described method in 4 according to claim 1 is characterized in that, after described UE selects or preferentially select the current residential quarter that does not suffer mutual interference in the equipment, also comprises:
Described UE sends disabled frequency point information to network side corresponding to the residential quarter of described selection.
6. method according to claim 5 is characterized in that, described disabled frequency point information comprises:
Can suffer on the described UE or generation equipment in the center frequency information of mutual interference.
7. method according to claim 5 is characterized in that, described UE is carried at described disabled frequency point information in radio resource control RRC connection re-establishment request message or the cell update message and sends.
8. according to claim 3 or 4 described methods, it is characterized in that described UE selects or preferentially select also to comprise after the current residential quarter that does not suffer mutual interference in the equipment:
Described UE determines not exist mutual interference in the equipment;
When the residential quarter is selected in described UE cancellation to the frequency that suffers mutual interference and the restriction of residential quarter.
9. method according to claim 8 is characterized in that, when the residential quarter is selected in described UE cancellation the restriction of the frequency that suffers mutual interference and residential quarter is comprised one of following:
Described UE is in scanning during frequency, all frequencies of the RAT that scanning PLMN supports;
With the priority of all residential quarters on the described frequency that suffers mutual interference in the equipment or the described frequency that suffers mutual interference and this frequency, be set to the described frequency that does not suffer mutual interference in the equipment or the described frequency that is disturbed and this frequency on the priority of all residential quarters be set to same value;
With the described frequency that suffers mutual interference in the equipment, perhaps the described frequency of mutual interference in the equipment and all residential quarters on this frequency of suffering are labeled as available.
10. a cell selecting apparatus is characterized in that, comprising:
Determination module is used for determining to exist mutual interference in the equipment;
Select module, be used for selection or preferentially select the current residential quarter that does not suffer mutual interference in the equipment.
11. device according to claim 10 is characterized in that, described selection module comprise following one of at least:
The first selected cell is used for according to the storage Information Selection of user equipment (UE) or preferentially selects the current residential quarter that does not suffer mutual interference in the equipment;
The current residential quarter that does not suffer mutual interference in the equipment is selected or preferentially selected to the second selected cell for the frequency of the wireless access technology RAT that supports by scanning public land mobile network PLMN.
12. device according to claim 11 is characterized in that, it is one of following that described the first selected cell comprises:
The deletion subelement is used for the information that deletion suffers the frequency of mutual interference in the equipment, and perhaps deletion suffers the information of the frequency of mutual interference in the equipment and the information of all residential quarters on this frequency;
Subelement is set, be used for suffering the frequency of mutual interference in the equipment or suffer the frequency of mutual interference in the equipment and all residential quarters on this frequency to be set to low priority, do not suffer the frequency of mutual interference in the equipment or do not suffer the frequency of mutual interference in the equipment and all residential quarters on this frequency to be set to high priority, wherein, when carrying out the flow process of selecting the residential quarter, preferentially select the residential quarter of high priority;
The mark subelement, be used for to suffer the frequency of mutual interference in the equipment or suffer the frequency of mutual interference in the equipment and all residential quarters on this frequency to be labeled as unavailable, wherein, when carrying out the flow process of selecting the residential quarter, never be labeled as in the disabled residential quarter and select the residential quarter.
13. device according to claim 11 is characterized in that, described the second selected cell comprises:
The scanning subelement is used for when the scanning frequency, will get rid of outside the scope of scanning by the frequency of mutual interference.
Priority Applications (1)
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|---|---|---|---|
| CN2011101898329A CN102869072A (en) | 2011-07-07 | 2011-07-07 | Method and device for cell selection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101898329A CN102869072A (en) | 2011-07-07 | 2011-07-07 | Method and device for cell selection |
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| CN102869072A true CN102869072A (en) | 2013-01-09 |
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| CN2011101898329A Pending CN102869072A (en) | 2011-07-07 | 2011-07-07 | Method and device for cell selection |
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| CN106060874A (en) * | 2016-08-09 | 2016-10-26 | 广东欧珀移动通信有限公司 | Method and device for scanning wireless access points and mobile terminal |
| CN106233787A (en) * | 2014-04-15 | 2016-12-14 | 高通股份有限公司 | Optimized cellular cell for LTE TDD system or the UE possessing CSG/eMBMS ability captures |
| CN107734542A (en) * | 2016-08-11 | 2018-02-23 | 电信科学技术研究院 | A kind of service cell updating method and device |
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| CN105493572A (en) * | 2013-08-30 | 2016-04-13 | 高通股份有限公司 | Managing a call during radio link failure |
| CN104981018A (en) * | 2014-04-03 | 2015-10-14 | 普天信息技术有限公司 | Resource distribution method for semi-static transmission |
| CN104981018B (en) * | 2014-04-03 | 2019-04-26 | 普天信息技术有限公司 | A kind of resource allocation methods of semi-static transmission |
| CN106233787A (en) * | 2014-04-15 | 2016-12-14 | 高通股份有限公司 | Optimized cellular cell for LTE TDD system or the UE possessing CSG/eMBMS ability captures |
| CN106233787B (en) * | 2014-04-15 | 2019-07-09 | 高通股份有限公司 | It is captured for the optimized cellular cell of LTE TDD system or the UE for having CSG/eMBMS ability |
| US10015730B2 (en) | 2014-09-26 | 2018-07-03 | Zte Corporation | Method and device for selecting heterogeneous network serving cell based on inter-cell cooperation |
| CN105992287A (en) * | 2015-03-04 | 2016-10-05 | 电信科学技术研究院 | Interference coordination method and device in multi-standard network |
| CN106060874A (en) * | 2016-08-09 | 2016-10-26 | 广东欧珀移动通信有限公司 | Method and device for scanning wireless access points and mobile terminal |
| CN106060874B (en) * | 2016-08-09 | 2019-08-23 | Oppo广东移动通信有限公司 | Scan the method, device and mobile terminal of wireless access point |
| CN107734542B (en) * | 2016-08-11 | 2020-01-07 | 电信科学技术研究院 | Method and device for updating service cell |
| CN107734542A (en) * | 2016-08-11 | 2018-02-23 | 电信科学技术研究院 | A kind of service cell updating method and device |
| WO2019071460A1 (en) * | 2017-10-11 | 2019-04-18 | Oppo广东移动通信有限公司 | Auxiliary serving cell management method, network device, and terminal device |
| CN112135300A (en) * | 2019-06-06 | 2020-12-25 | 联发科技股份有限公司 | Wireless communication device for preventing in-device coexistence interference |
| CN112135300B (en) * | 2019-06-06 | 2024-03-22 | 联发科技股份有限公司 | Wireless communication device for preventing in-device coexistence interference |
| CN112469089A (en) * | 2019-09-06 | 2021-03-09 | 中国移动通信有限公司研究院 | Cell reselection or switching method, terminal and network equipment |
| CN112203361A (en) * | 2020-10-12 | 2021-01-08 | Oppo（重庆）智能科技有限公司 | Method and device for processing radio link failure, terminal and storage medium |
| CN112203361B (en) * | 2020-10-12 | 2023-02-28 | Oppo（重庆）智能科技有限公司 | Method and device for processing radio link failure, terminal and storage medium |
| CN114363995A (en) * | 2022-01-21 | 2022-04-15 | 高新兴物联科技有限公司 | Method and device for quickly searching network, mobile terminal and storage medium |
| CN114363995B (en) * | 2022-01-21 | 2023-08-18 | 高新兴物联科技股份有限公司 | Method and device for quickly searching network, mobile terminal and storage medium |
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