CN102170644A - Method for avoiding coexistence interference in terminal equipment - Google Patents
Method for avoiding coexistence interference in terminal equipment Download PDFInfo
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- CN102170644A CN102170644A CN2011101348225A CN201110134822A CN102170644A CN 102170644 A CN102170644 A CN 102170644A CN 2011101348225 A CN2011101348225 A CN 2011101348225A CN 201110134822 A CN201110134822 A CN 201110134822A CN 102170644 A CN102170644 A CN 102170644A
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Abstract
The invention discloses a method for avoiding coexistence interference in terminal equipment. The terminal equipment comprises an LTE (long term evolution) module of an LTE system, and a non-LTE module of other wireless systems, wherein the LTE module can detect the ICO (in-device coexistence) interference problem. The method comprises: the LTE module estimates the ICO interference condition, and sends an ICO interference indication message to an evolved NodeB (eNB), wherein the ICO interference indication message comprises an unavailable frequency list and TDM (time division multiplexing) mode information; the eNB judges the ICO interference avoiding mode according to the ICO interference indication message and auxiliary information sent by the terminal equipment, wherein the auxiliary information comprises a power headroom report (PHR) and a proximity indication message; and the eNB sends a terminal behavior instruction message to the terminal equipment according to the judgment result to instruct the terminal equipment to perform corresponding operation. According to the technical scheme of the invention, the ICO interference problem can be preferably solved, and the user experience and system performance can be enhanced.
Description
Technical field
The present invention relates to the network communications technology, the method for avoiding is disturbed in coexistence in particularly a kind of terminal equipment.
Background technology
Coexistence (ICO, In-device coexistence) is disturbed and is avoided the subject under discussion of problem and carry out corresponding standard work in 10 li of 3GPP Release determine the research terminal equipment.Because current ubiquitous available Access Network, user's different network of accesss of having ready conditions in zones of different is also all kept its connectedness throughout.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 that the coexistence between the transceiver of wireless device in the identical device is disturbed.
Avoid in order to realize that coexistence is disturbed in the terminal equipment, terminal equipment should be sent in the detected ICO disturbed condition of terminal equipment to eNB, whether the indication decision that eNB reports based on terminal equipment takes corresponding the interference to avoid behavior, and determines to 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; The control of LTE power; The control of ISM power; Time division multiplexing; Terminal is independently refused LTE.May be summarized to be: based on the solution of frequency division multiplexing (FDM), based on the solution of power control (PC) with based on the solution of Time Division Multiplexing.These solutions all do not have to get rid of at present, promptly all may appear in the candidate scheme in the reality.
In a word, the indicating means of coexistence interference problem exists not enoughly in the prior terminal, has 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 the terminal equipment, reduce user experience; In addition, because the limitation of closing on Indication message may cause interference problem in time not indicate to eNB, thereby cause high cutting off rate and poor throughput.
Summary of the invention
The invention provides the method that the coexistence interference is avoided in a kind of terminal equipment, this method can better solve the ICO interference problem, promotes user experience and systematic function.
For achieving the above object, this method is achieved in that the method for avoiding is disturbed in coexistence in a kind of terminal equipment, comprises the LTE module that is used for the LTE system in the terminal equipment, is used for the non-LTE module of other wireless system; Wherein, the LTE module can detect the ICO interference problem; This method comprises:
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;
ENB carries out ICO and disturbs the judgement of avoiding mode according to ICO interference indication message and supplementary that terminal equipment sends; Described supplementary comprises: power headroom reporting (PHR) PHR, close on Indication message;
According to court verdict, eNB sends the terminal behavior Indication message to terminal equipment, and indicating terminal equipment is operated accordingly.
From the above, technical scheme of the present invention, by the ICO interference indication message coexistence disturbed condition that exists in the terminal equipment is judged, by power headroom reporting (PHR) with close on Indication message indication, judge whether to adopt mode based on power control, by whether having other available frequencies, judge the mode that adopts based on FDM, still adopt mode based on TDM; Use method of the present invention can comprehensively consider the situation of network and terminal, make the judgement of suitable present case, can better solve the ICO interference problem, promote user experience and systematic function.
Description of drawings
Fig. 1 is the schematic flow sheet of the method that the coexistence interference is avoided in a kind of terminal equipment among the present invention;
Fig. 2 is the signaling process figure of the method that the coexistence interference is avoided in a kind of terminal equipment among the present invention;
Fig. 3 is the judgement flow chart of the method that the coexistence interference is avoided in a kind of terminal equipment among the present invention.
Embodiment
The invention discloses the method that the coexistence interference is avoided in a kind of terminal equipment, this method can better solve the ICO interference problem, promotes user experience and systematic function.
Fig. 1 is the schematic flow sheet of the method that the coexistence interference is avoided in a kind of terminal equipment among the present invention; As shown in Figure 1,
After step 101, LTE module are 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.
In order to make the purpose, technical solutions and advantages of the present invention clearer, describe the present invention below in conjunction with the drawings and specific embodiments.
Fig. 2 is the signaling process figure of the method that the coexistence interference is avoided in a kind of terminal equipment among the present invention; As shown in Figure 2; Comprise the LTE module that is used for the LTE system in the terminal equipment, be used 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 the interior non-LTE module of terminal equipment and work, and with what pattern is working.The LTE module can judge non-LTE module whether to the transfer of data of LTE module cause disturb and the LTE module when carrying out transfer of data whether to the interference of the transfer of data of non-LTE module, promptly whether the LTE module causes interference to the transfer of data of non-LTE module.
After step 202, LTE module are assessed the ICO disturbed condition, send the ICO interference indication message to eNB according to assessment result.
In step 202, if being interference problem, the assessment result of ICO disturbed condition produces, then comprise the information of corresponding unavailable frequency in the unavailable list of frequency of LTE module in the ICO interference indication message that eNB sends; 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 interference.
, the assessment result of ICO disturbed condition changes the information of the unavailable frequency after then comprising corresponding renewal in the unavailable list of frequency of LTE module in the ICO interference indication message that eNB sends if being interference problem; The situation that described interference problem changes may be that the transfer of data to the LTE module on a certain frequency caused interference after the operating state of other non-LTE modules changed.
Disappear if the assessment result of ICO disturbed condition is an interference problem, then the unavailable list of frequency of LTE module in the ICO interference indication message that eNB sends 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 interference.
Wherein, the LTE module sends to eNB to detected unavailable frequency information by the ICO interference indication message, and described ICO interference indication message is provided with in RRC connection reconfiguration message, is used to indicate ICO interference problem and relevant information.After the operating state of non-LTE module changed in the terminal equipment, the LTE module can be carried out the assessment of ICO disturbed condition automatically, can trigger the ICO interference indication message after the assessment.
Comprise in the described ICO interference indication message: unavailable list of frequency, but extend information; But wherein comprise TDM pattern information, other extend informations in the extend information.Other extend informations can be provided with according to later concrete condition.
Step 203, eNB carries out ICO and disturbs the judgement of avoiding mode according to ICO interference indication message and supplementary that terminal equipment sends.
Step 204, according to court verdict, eNB sends the terminal behavior Indication message to terminal equipment, and indicating terminal equipment is operated accordingly.
In step 203, eNB is according to ICO interference indication message and supplementary that terminal equipment sends, carry out ICO disturb avoid mode concrete judging process as shown in Figure 3.
Fig. 3 is the judgement flow chart of the method that the coexistence interference is avoided in a kind of terminal equipment among the present invention; As shown in Figure 3: as shown in Figure 3,
Step 301, whether eNB is empty according to the unavailable list of frequency in the ICO interference indication message of terminal equipment transmission, judges whether the ICO disturbed condition exists;
If the unavailable list of frequency in the ICO interference indication message is empty, judge that then 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 then 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, if draw circuit loss value less than designated value and closes on and indicates the state of terminal equipment not leave in the Indication message according to the PHR that receives, and then carry out step 304; Otherwise, carry out step 305.
Step 304, the court verdict that obtains eNB uses the mode of controlling based on power for indicating terminal equipment.
Step 305, eNB checks whether terminal equipment exists away from the usable frequency of disturbing;
If there is usable frequency, then carry out step 306; If there is no usable frequency then carry out step 307.
Step 306, the court verdict that draws eNB is the mode of indicating terminal equipment use based on FDM;
Step 307, the court verdict that draws eNB is the mode of indicating terminal equipment use based on TDM.
In step 303, eNB judges according to PHR and contiguous Indication message whether terminal equipment adopts the mode based on power control; 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 sub-district of described terminal equipment under eNB, move,, need then to judge that whether the current state of described terminal equipment is for leaving if use the transfer of data that may influence LTE based on the mode of power control toward cell edge; And contiguous Indication message can leave the sub-district or enter the sub-district by the current state of indicating terminal equipment.So adopt PHR and close on mode that Indication message combines and can judge better whether current terminal equipment can be taked to carry out ICO based on the mode of power control and disturb and avoid operation.
In the step 204 of Fig. 2, eNB sends the terminal behavior Indication message to terminal equipment, and the corresponding operating that indicating terminal equipment carries out is specially:
If the court verdict of eNB uses the mode of controlling based on power for indicating terminal equipment, then in the terminal behavior Indication message of correspondence, indicate the back-off grade of terminal equipment; In this process, the power grade of terminal equipment can be according to actual conditions, set up on their own, described mode based on power control is specially, the transmission power level that the LTE module need change in the indication terminal equipment in the terminal behavior Indication message, after terminal equipment receives this terminal behavior Indication message, reduce the actual transmission power of LTE module in the terminal equipment according to wherein transmission power level, the interference that when carrying out transfer of data the transfer of data of non-LTE module is caused to reduce the LTE module.
If the court verdict of eNB is the mode of indicating terminal equipment use based on FDM, the then new usable frequency that the indication terminal equipment uses in the terminal behavior Indication message of correspondence; In this process, eNB checks whether terminal equipment exists away from the usable frequency of disturbing, and this usable frequency sent to terminal equipment, the LTE module in the terminal equipment is disturbed away from ICO by using this usable frequency, perhaps reduces the interference that non-LTE module is received.
If the court verdict of eNB is the mode of indicating terminal equipment use based on TDM, then the TDM pattern that the indication terminal equipment uses in the terminal behavior Indication message of correspondence; 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 the TDM pattern of the best is sent to terminal equipment.
ENB indicating terminal equipment uses corresponding TDM pattern to carry out the ICO interference and avoids; Wherein, available TDM pattern comprises based on the mode of discontinuous reception DRX with based on the mode of mixing automatic repeat requests HARQ; If adopt method, at TDM pattern middle finger DRX cycle and the operable activationary time of LTE based on DRX; If adopt HARQ process reservation method, just be used for LTE in which HARQ process of TDM pattern middle finger, which HARQ process is used for coexistence.
In a specific embodiment of the present invention, user A sees video on the terminal equipment that moves, and uses the wireless blue tooth earphone; User A is in certain cell edge place under the eNB; This moment, eNB distributed the high component frequency f1 of 40 li on LTE frequency band for it.
After opening bluetooth earphone, the LTE module is carried out the ICO interference assessment in the terminal equipment, 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 that has stored, is determined suitable TDM pattern; By the ICO interference indication message unavailable frequency and TDM pattern are informed eNB.
After eNB receives ICO interference indication message from terminal equipment, check the unavailable list of frequency in this ICO interference indication message, find existence because ICO disturbs and disabled frequency, determine that thus this terminal equipment exists ICO to disturb, need carry out the ICO interference to it and avoid operation.
Before checking, eNB closed on indication from whether triggering in the PHR of this terminal equipment and the 5s, calculate circuit loss value less than designated value according to PHR, terminal equipment has the power retraction space, but close on indication " leaving " in the indication, therefore determine that this terminal equipment is just preparing to exit this sub-district, can cause service disconnection if reduce its transmitted power, so inapplicable based on the solution of power control.
ENB checks the frequency of indicating in unavailable list of frequency, find still to have other usable frequencies, so eNB determines to use the FDM solution to eliminate this ICO interference problem.ENB finally determines target frequency based on general alien frequencies handover decision mechanism (considering load balancing, service quality etc.), and carries out work according to general alien frequencies handoff procedure.
In sum, technical scheme disclosed by the invention, by the ICO interference indication message coexistence disturbed condition that exists in the terminal equipment is judged, by power headroom reporting (PHR) with close on Indication message indication, judge whether to adopt mode based on power control, by whether having other available frequencies, judge the mode that adopts based on FDM, still adopt mode based on TDM.
Adopt the ICO interference indication message, terminal equipment can report the ICO disturbed condition to eNB timely, thereby can solve the ICO interference problem as soon as possible, perhaps discharges owing to disturb and avoid the resource that is restricted; Use method of the present invention can comprehensively consider the situation of network and terminal equipment, make the judgement of suitable present case, can better solve the ICO interference problem, promote user experience and systematic function.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being made, is equal to replacement, improvement etc., all should be included within the scope of protection of the invention.
Claims (9)
1. the method for avoiding is disturbed in the interior coexistence of terminal equipment, it is characterized in that, comprises the LTE module that is used for long-term evolving network LTE system in the terminal equipment, is used for the non-LTE module of other wireless system; Wherein, the LTE module can detect coexistence ICO interference problem in the terminal equipment; This method comprises:
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;
ENB carries out ICO and disturbs the judgement of avoiding mode according to ICO interference indication message and supplementary that terminal equipment sends; Described supplementary comprises: power headroom reporting (PHR) PHR, close on Indication message;
According to court verdict, eNB sends the terminal behavior Indication message to terminal equipment, and indicating terminal equipment is operated accordingly.
2. method according to claim 1 is characterized in that, described LTE module is assessed the ICO disturbed condition and comprised:
The LTE module is assessed the disturbed condition that non-LTE module in the terminal equipment is produced, 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 comprises:
Produce if assessment result is an interference problem, then comprise the information of corresponding unavailable frequency in the unavailable list of frequency of LTE module in the ICO interference indication message that eNB sends;
, assessment result changes the information of the unavailable frequency after then comprising corresponding renewal in the unavailable list of frequency of LTE module in the ICO interference indication message that eNB sends if being interference problem;
Disappear if assessment result is an interference problem, then the unavailable list of frequency of LTE module in the ICO interference indication message that eNB sends is empty.
4. ask 1 described method according to right, it is characterized in that, described eNB carries out the ICO interference and avoids the judgement of mode to comprise according to ICO interference indication message and supplementary that terminal equipment sends:
If the unavailable list of frequency in the ICO interference indication message that the eNB receiving terminal apparatus sends be empty, then 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, then eNB is according to PHR with close on Indication message and judge whether to use the mode of controlling based on power;
If use the mode of controlling based on power, then the court verdict of eNB is that indicating terminal equipment uses the mode based on power control;
If not the mode of using based on power control, then eNB checks whether terminal equipment exists away from the usable frequency of disturbing;
If there is usable frequency, then the court verdict of eNB is the mode of indicating terminal equipment use based on frequency division multiplexing FDM;
If there is no usable frequency, then the court verdict of eNB is that indicating terminal equipment uses the mode based on time division multiplexing tdm.
5. method according to claim 4 is characterized in that, described eNB is according to PHR and close on Indication message and judge whether to use the mode based on power control to comprise:
ENB, if draw circuit loss value less than designated value and closes on and indicates the state of terminal equipment not leave in the Indication message according to the PHR that receives, and then the court verdict of eNB is that indicating terminal equipment uses the mode based on power control.
6. method according to claim 4 is characterized in that, described eNB sends the terminal behavior Indication message to terminal equipment, and indicating terminal equipment carries out corresponding operating and comprises:
If the court verdict of eNB uses the mode of controlling based on power for indicating terminal equipment, then in the terminal behavior Indication message of correspondence, indicate the back-off grade of terminal equipment.
7. method according to claim 4 is characterized in that, described eNB sends the terminal behavior Indication message to terminal equipment, and indicating terminal equipment carries out corresponding operating and comprises:
If the court verdict of eNB is the mode of indicating terminal equipment use based on FDM, the then new usable frequency that the indication terminal equipment uses in the terminal behavior Indication message of correspondence.
8. method according to claim 4 is characterized in that, described eNB sends the terminal behavior Indication message to terminal equipment, and indicating terminal equipment carries out corresponding operating and comprises:
If the court verdict of eNB is the mode of indicating terminal equipment use based on TDM, then the TDM pattern that the indication terminal equipment uses in the terminal behavior Indication message of correspondence.
9. method according to claim 8 is characterized in that, the described TDM pattern that the indication terminal equipment uses in the terminal behavior Indication message of correspondence comprises:
According to the TDM pattern information of carrying in the ICO interference indication message, eNB indicating terminal equipment uses corresponding TDM pattern to carry out coexisting in the terminal equipment to disturb avoiding.
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