CN102170644B - Method for avoiding coexistence interference in terminal equipment - Google Patents
Method for avoiding coexistence interference in terminal equipmentDownload PDFInfo
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- CN102170644B CN102170644BCN201110134822.5ACN201110134822ACN102170644BCN 102170644 BCN102170644 BCN 102170644BCN 201110134822 ACN201110134822 ACN 201110134822ACN 102170644 BCN102170644 BCN 102170644B
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Abstract
Description
Technical field
The present invention relates to the network communications technology, a kind of method that particularly in terminal equipment, mutual interference is avoided.
Background technology
(ICO, the In-device coexistence) interference that coexists in 10 li of 3GPP Release determine the research terminal equipment is avoided the subject under discussion of problem and carries out corresponding standardization effort.Due to current ubiquitous available Access Network, the have ready conditions different network of in zones of different access all maintain throughout its connectedness of user.For this reason, now increasing user terminal has been installed a plurality of transceivers, and therefore design becomes increasingly complex, and needs to solve more challenge, to integrate a plurality of different transceivers to identical equipment platform, keeps good performance simultaneously.One of them the most difficult challenge is the mutual interference between the transceiver of wireless device in identical device.
In order to realize that in terminal equipment, mutual interference is avoided, terminal equipment should be sent in the ICO disturbed condition that terminal equipment detects to eNB, the indication that eNB reports based on terminal equipment determines whether to take the corresponding behavior of avoiding of disturbing, and determines and take which kind of solution.Solution comprises following several at present: mobile LTE signal is away from ISM band; Mobile ISM wireless signal is away from the LTE frequency range; LTE power is controlled; ISM power is controlled; Time division multiplexing; Terminal is independently refused LTE.May be summarized to be: the solution based on frequency division multiplexing (FDM), solution and the solution based on time division multiplexing (TDM) based on power control (PC).These solutions all do not have to get rid of at present, in reality, all may appear in candidate scheme.
In a word, the indicating means Shortcomings of mutual interference problem in existing terminal equipment, limited to the selection that subsequent interference is avoided solution, may cause inappropriate terminal equipment behavior, thereby cause the phase mutual interference of different radio technology in terminal equipment, reduce the user and experience; In addition, due to the limitation of closing on Indication message, may cause interference problem not indicate to eNB in time, thereby cause high cutting off rate and poor throughput.
Summary of the invention
The invention provides a kind of method that in terminal equipment, mutual interference is avoided, the method can better solve the ICO interference problem, promotes the user and experiences and systematic function.
For achieving the above object, the method is achieved in that a kind of method that in terminal equipment, mutual interference is avoided, and comprises the LTE module for the LTE system in terminal equipment, for the non-LTE module of other wireless system; Wherein, the LTE module can detect the ICO interference problem; The method comprises:
After the LTE module is assessed the ICO disturbed condition, to evolution base station eNB, send the ICO interference indication message; Described ICO interference indication message comprises: unavailable list of frequency, TDM pattern information;
ICO interference indication message and supplementary that eNB sends according to terminal equipment, carry out ICO and disturb the judgement of avoiding mode; Described supplementary comprises: power headroom reporting (PHR) PHR, close on Indication message;
According to court verdict, eNB is to terminal equipment transmitting terminal behavior Indication message, and indicating terminal equipment operates accordingly.
From the above, technical scheme of the present invention, by the ICO interference indication message, the mutual interference situation existed in terminal equipment is judged, by power headroom reporting (PHR) with close on Indication message indication, judge whether to adopt the mode of controlling based on power, by whether having other available frequencies, judgement adopts the mode based on FDM, or adopts the mode based on TDM; Use method of the present invention can comprehensively consider the situation of network and terminal, make the judgement of applicable present case, can better solve the ICO interference problem, promote the user and experience and systematic function.
The accompanying drawing explanation
Fig. 1 is the schematic flow sheet of a kind of method that in the present invention, in terminal equipment, mutual interference is avoided;
Fig. 2 is the signaling process figure of a kind of method that in the present invention, in terminal equipment, mutual interference is avoided;
Fig. 3 is the judgement flow chart of a kind of method that in the present invention, in terminal equipment, mutual interference is avoided.
Embodiment
The invention discloses a kind of method that in terminal equipment, mutual interference is avoided, the method can better solve the ICO interference problem, promotes the user and experiences and systematic function.
Fig. 1 is the schematic flow sheet of a kind of method that in the present invention, in terminal equipment, mutual interference is avoided; As shown in Figure 1,
Step 101, after the LTE module is assessed the ICO disturbed condition, send the ICO interference indication message to evolution base station eNB; Described ICO interference indication message comprises: unavailable list of frequency, TDM pattern information.
Step 102, ICO interference indication message and supplementary that eNB sends according to terminal equipment, carry out ICO and disturb the judgement of avoiding mode; Described supplementary comprises: power headroom reporting (PHR) PHR, close on Indication message.
Step 103, according to court verdict, eNB is to terminal equipment transmitting terminal behavior Indication message, and indicating terminal equipment operates accordingly.
In order to make the purpose, technical solutions and advantages of the present invention clearer, below in conjunction with the drawings and specific embodiments, describe the present invention.
Fig. 2 is the signaling process figure of a kind of method that in the present invention, in terminal equipment, mutual interference is avoided; As shown in Figure 2; Comprise the LTE module for the LTE system in terminal equipment, for the non-LTE module of other wireless system; Wherein, non-LTE module comprises bluetooth module, infrared module, 2G communication module etc.;
Step 201, the LTE module is assessed the ICO disturbed condition, and described assessment result comprises: interference problem produces, interference problem changes or interference problem disappears.
In step 201, whether the LTE module can detect non-LTE module in terminal equipment and work, and with what work pattern.The LTE module can judge non-LTE module whether to the transfer of data of LTE module cause disturb and the LTE module while carrying out transfer of data whether to the interference of the transfer of data of non-LTE module, whether the LTE module causes interference to the transfer of data of non-LTE module.
Step 202, after the LTE module is assessed the ICO disturbed condition, send the ICO interference indication message according to assessment result to eNB.
In step 202, if being interference problem, the assessment result of ICO disturbed condition produces the information that comprises corresponding unavailable frequency in the unavailable list of frequency in the ICO interference indication message that the LTE module sends to eNB; The situation that described interference problem produces may be after other non-LTE modules start, and the transfer of data of LTE module is caused to interference.
Change if the assessment result of ICO disturbed condition is interference problem, comprise the information of the unavailable frequency after corresponding renewal in the unavailable list of frequency in the ICO interference indication message that the LTE module sends to eNB; The situation that described interference problem changes may be, after the operating state of other non-LTE modules changes, on a certain frequency, the transfer of data of LTE module to be caused to interference.
If the assessment result of ICO disturbed condition is interference problem, disappear, the unavailable list of frequency in the ICO interference indication message that the LTE module sends to eNB is empty; The situation that described interference problem disappears may be that other non-LTE modules quit work, and the transfer of data of LTE module is not caused to interference.
Wherein, the LTE module sends to eNB to the unavailable frequency information detected by the ICO interference indication message, and described ICO interference indication message connects in reconfiguration message and arranges at RRC, is used to indicate ICO interference problem and relevant information.After in terminal equipment, the operating state of non-LTE module changes, the LTE module can be carried out the assessment of ICO disturbed condition automatically, after assessment, can trigger the ICO interference indication message.
Described ICO interference indication message comprises: unavailable list of frequency, but extend information; Wherein but extend information comprises TDM pattern information, other extend informations.Other extend informations can be arranged according to later concrete condition.
Step 203, ICO interference indication message and supplementary that eNB sends according to terminal equipment, carry out ICO and disturb the judgement of avoiding mode.
Step 204, according to court verdict, eNB is to terminal equipment transmitting terminal behavior Indication message, and indicating terminal equipment operates accordingly.
In step 203, ICO interference indication message and supplementary that eNB sends according to terminal equipment, carry out ICO disturb avoid mode concrete judging process as shown in Figure 3.
Fig. 3 is the judgement flow chart of a kind of method that in the present invention, in terminal equipment, mutual interference is avoided; As shown in Figure 3: as shown in Figure 3,
Step 301, whether the unavailable list of frequency in the ICO interference indication message that eNB sends according to terminal equipment is empty, judges whether the ICO disturbed condition exists;
If the unavailable list of frequency in the ICO interference indication message is empty, judge that there is not the ICO interference problem in described terminal equipment, enters step 302;
If the unavailable list of frequency in the ICO interference indication message is not empty, judge that there is the ICO interference problem in described terminal equipment, enters step 303.
Step 302, the court verdict that obtains eNB be indicating terminal equipment do not disturb avoid the operation.
Step 303, eNB, according to the PHR received, if show that circuit loss value is less than designated value, and closes in Indication message and indicates the state of terminal equipment not leave, and carry out step 304; Otherwise, carry out step 305.
Step 304, the court verdict that obtains eNB is that indicating terminal equipment is used the mode of controlling based on power.
Step 305, eNB checks whether terminal equipment exists away from the usable frequency of disturbing;
If there is usable frequency, carry out step 306; If there is no usable frequency, carry out step 307.
Step 306, the court verdict that draws eNB is that indicating terminal equipment is used the mode based on FDM;
Step 307, the court verdict that draws eNB is that indicating terminal equipment is used the mode based on TDM.
In step 303, eNB judges according to PHR and contiguous Indication message whether terminal equipment adopts the mode of controlling based on power; Described PHR is the maximum transmit power-actual transmission power report of terminal equipment, eNB can calculate circuit loss value according to PHR, if path loss is less than designated value, described designated value can be determined according to actual conditions, eNB thinks that the transmitted power of terminal equipment can rollback so, and by physical layer power control command TPC indicating terminal equipment.
In a certain community of described terminal equipment under eNB, toward cell edge, move, if use the mode of controlling based on power may affect the transfer of data of LTE, need to be judged that whether the current state of described terminal equipment is for leaving; And contiguous Indication message can leave community or enter community by the current state of indicating terminal equipment.Therefore adopt PHR and close on mode that mode that Indication message combines can better judge whether current terminal equipment can be taked to control based on power and carry out ICO and disturb and avoid operation.
In the step 204 of Fig. 2, eNB is to terminal equipment transmitting terminal behavior Indication message, and the corresponding operating that indicating terminal equipment carries out is specially:
If being indicating terminal equipment, the court verdict of eNB uses the mode of controlling based on power, the back-off grade of indication terminal equipment in corresponding terminal behavior Indication message; In this process, the power grade of terminal equipment can be according to actual conditions, set up on their own, the described mode of controlling based on power is specially, the transmission power level that in the indication terminal equipment, the LTE module need to change in the terminal behavior Indication message, after terminal equipment receives this terminal behavior Indication message, reduce the actual transmission power of LTE module in terminal equipment according to transmission power level wherein, the interference while to reduce the LTE module, carrying out transfer of data, the transfer of data of non-LTE module caused.
If being indicating terminal equipment, the court verdict of eNB uses the mode based on FDM, the new usable frequency that the indication terminal equipment is used in corresponding terminal behavior Indication message; In this process, eNB checks whether terminal equipment exists away from the usable frequency of disturbing, and this usable frequency is sent to terminal equipment, the LTE module in terminal equipment is by using this usable frequency to disturb away from ICO, or reduces the interference that non-LTE module is received.
If being indicating terminal equipment, the court verdict of eNB uses the mode based on TDM, the TDM pattern that the indication terminal equipment is used in corresponding terminal behavior Indication message; In this process, according to the TDM pattern information of carrying in the ICO interference indication message, terminal equipment has a plurality of for the TDM pattern that eNB provides; ENB carries out conclusive judgement according to network parameters such as loading conditions after receiving the ICO interference indication message, and best TDM pattern is sent to terminal equipment.
ENB indicating terminal equipment is used corresponding TDM pattern to carry out the ICO interference and avoids; Wherein, available TDM pattern comprises mode and the mode based on mixed automatic retransfer request HARQ based on discontinuous reception DRX; If adopt the method based on DRX, at TDM pattern middle finger DRX cycle and the operable activationary time of LTE; If adopt HARQ process reservation method, just in which HARQ process of TDM pattern middle finger, be used for LTE, which HARQ process is for coexisting.
In a specific embodiment of the present invention, user A, at mobile terminal equipment video, is used the wireless blue tooth earphone; User A is certain cell edge place under eNB; Now eNB has distributed the high component frequency f1 of 40 li, LTE frequency band for it.
After opening bluetooth earphone, in terminal equipment, the LTE module is carried out the ICO interference assessment, and the transfer of data to the LTE module after the work of discovery bluetooth module causes interference; The type of service that the LTE module is informed in conjunction with the bluetooth earphone module, in conjunction with the corresponding timeline of this type of service stored, determine suitable TDM pattern; By the ICO interference indication message, unavailable frequency and TDM pattern are informed to eNB.
After eNB receives the ICO interference indication message from terminal equipment, check the unavailable list of frequency in this ICO interference indication message, there is the disabled frequency because ICO disturbs in discovery, and determines that thus this terminal equipment exists ICO to disturb, and need to carry out the ICO interference to it and avoid operation.
Before eNB checks from the PHR of this terminal equipment and 5s, whether triggering and close on indication, calculate circuit loss value according to PHR and be less than designated value, terminal equipment has the power retraction space, but close on indication " leaving " in indication, therefore determine that this terminal equipment is just preparing to exit this community, can cause service disconnection if reduce its transmitted power, so the solution of controlling based on power is inapplicable.
ENB checks the frequency of indicating in unavailable list of frequency, find still to have other usable frequencies, so the definite FDM solution of using of eNB is eliminated this ICO interference problem.The alien frequencies handover decision mechanism (consider load balancing, service quality etc.) of eNB based on general, finally determine target frequency, and carry out work according to general alien frequencies handoff procedure.
In sum, technical scheme disclosed by the invention, by the ICO interference indication message, the mutual interference situation existed in terminal equipment is judged, by power headroom reporting (PHR) with close on Indication message indication, judge whether to adopt the mode of controlling based on power, by whether having other available frequencies, judgement adopts the mode based on FDM, or adopts the mode based on TDM.
Adopt the ICO interference indication message, terminal equipment can report the ICO disturbed condition to eNB timely, thereby can solve as soon as possible the ICO interference problem, or discharges because the resource be restricted is avoided in interference; Use method of the present invention can comprehensively consider the situation of network and terminal equipment, make the judgement of applicable present case, can better solve the ICO interference problem, promote the user and experience and systematic function.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of making, be equal to replacement, improvement etc., within all should being included in the scope of protection of the invention.
Claims (7)
1. the method that the interior mutual interference of terminal equipment is avoided, is characterized in that, comprises the LTE module for long-term evolving network LTE system in terminal equipment, for the non-LTE module of other wireless system; Wherein, the LTE module can detect in terminal equipment the ICO interference problem that coexists; The method comprises:
After the LTE module is assessed the ICO disturbed condition, to evolution base station eNB, send the ICO interference indication message; Described ICO interference indication message comprises: unavailable list of frequency, TDM pattern information;
ICO interference indication message and supplementary that eNB sends according to terminal equipment, carry out ICO and disturb the judgement of avoiding mode; Described supplementary comprises: power headroom reporting (PHR) PHR, close on Indication message;
According to court verdict, eNB is to terminal equipment transmitting terminal behavior Indication message, and indicating terminal equipment operates accordingly;
ICO interference indication message and supplementary that described eNB sends according to terminal equipment, carry out the ICO interference and avoid the judgement of mode to comprise:
If the unavailable list of frequency in the ICO interference indication message that the eNB receiving terminal apparatus sends be empty, the court verdict of eNB is that indicating terminal equipment does not disturb and avoids operating;
If the unavailable list of frequency in the ICO interference indication message that terminal equipment sends be empty, eNB is according to PHR with close on Indication message and judge whether to use the mode based on power control;
If use the mode of controlling based on power, the court verdict of eNB is that indicating terminal equipment is used the mode of controlling based on power;
If not using the mode of controlling based on power, eNB checks whether terminal equipment exists away from the usable frequency of disturbing;
If there is usable frequency, the court verdict of eNB is that indicating terminal equipment is used the mode based on frequency division multiplexing FDM;
If there is no usable frequency, the court verdict of eNB is that indicating terminal equipment is used the mode based on time division multiplexing tdm;
Wherein, described eNB is according to PHR with close on Indication message and judge whether to use the mode of controlling based on power to comprise:
ENB, according to the PHR received, if show that circuit loss value is less than designated value, and closes in Indication message and indicates the state of terminal equipment not leave, and the court verdict of eNB is that indicating terminal equipment is used the mode of controlling based on power.
2. method according to claim 1, is characterized in that, described LTE module is assessed and comprised the ICO disturbed condition:
The LTE module is assessed the disturbed condition that in terminal equipment, non-LTE module produces, and draws assessment result; Described assessment result comprises: interference problem produces, interference problem changes or interference problem disappears.
3. method according to claim 2, is characterized in that, after described LTE module is assessed the ICO disturbed condition, sends the ICO interference indication message to eNB and comprise:
If being interference problem, assessment result produces the information that comprises corresponding unavailable frequency in the unavailable list of frequency in the ICO interference indication message that the LTE module sends to eNB;
Change if assessment result is interference problem, comprise the information of the unavailable frequency after corresponding renewal in the unavailable list of frequency in the ICO interference indication message that the LTE module sends to eNB;
If assessment result is interference problem, disappear, the unavailable list of frequency in the ICO interference indication message that the LTE module sends to eNB is empty.
4. method according to claim 1, is characterized in that, described eNB is to terminal equipment transmitting terminal behavior Indication message, and indicating terminal equipment carries out corresponding operating and comprises:
If being indicating terminal equipment, the court verdict of eNB uses the mode of controlling based on power, the back-off grade of indication terminal equipment in corresponding terminal behavior Indication message.
5. method according to claim 1, is characterized in that, described eNB is to terminal equipment transmitting terminal behavior Indication message, and indicating terminal equipment carries out corresponding operating and comprises:
If being indicating terminal equipment, the court verdict of eNB uses the mode based on FDM, the new usable frequency that the indication terminal equipment is used in corresponding terminal behavior Indication message.
6. method according to claim 1, is characterized in that, described eNB is to terminal equipment transmitting terminal behavior Indication message, and indicating terminal equipment carries out corresponding operating and comprises:
If being indicating terminal equipment, the court verdict of eNB uses the mode based on TDM, the TDM pattern that the indication terminal equipment is used in corresponding terminal behavior Indication message.
7. method according to claim 6, is characterized in that, the described TDM pattern that the indication terminal equipment is used in corresponding terminal behavior Indication message comprises:
According to the TDM pattern information of carrying in the ICO interference indication message, eNB indicating terminal equipment is used corresponding TDM pattern to carry out mutual interference in terminal equipment and avoids.
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