CN105338558A - Interference processing method, device and system for LTE communication system - Google Patents
Interference processing method, device and system for LTE communication system Download PDFInfo
- Publication number
- CN105338558A CN105338558A CN201410370851.5A CN201410370851A CN105338558A CN 105338558 A CN105338558 A CN 105338558A CN 201410370851 A CN201410370851 A CN 201410370851A CN 105338558 A CN105338558 A CN 105338558A
- Authority
- CN
- China
- Prior art keywords
- interference
- measured
- silence
- resource block
- physical resource
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The object of the present invention is to provide an interference processing method, device and system for a LTE communication system, wherein the processing device determines an interference level corresponding to a cell to be measured by determining one or more physical resource blocks used for interference measurement of the cell to be measured and performing interference measurement on the resource blocks, and determines whether to switch a working frequency range corresponding to the cell to be measured based on the interference level. As compared with the prior art, the method, device and system of the present invention is capable of detecting and avoiding interference jamming sent from low-overhead software, improving robustness for avoiding interference for the communication system, increasing cost of malicious interference, reducing detection cost and realizing adjustable balance between overhead/complexity and performance.
Description
Technical field
The present invention relates to the communications field, particularly relate to a kind of technology for LTE communication system interference process.
Background technology
In ARTModern mobile networks, LTE (Long Term Evolution, LongTermEvolution) provides high data rate, is also probably used as the air interface of Public safety network.In this case, need to consider that LTE system is by the possibility of RF choke (jamming).Invader may adopt RF choke to destroy communication system.Similarly, criminal organization also can block in this way, thus stirs up confusion between the public.
At present, technical staff has been found that by using the wireless launcher of software definition, just can low consumption and simply mode whole LTE system is paralysed.This is because LTE system height depends on control command, and this kind of control command proportion is less than 1% of overall signaling.A part in these instructions, such as PSS (PrimarySynchronizationSignal, main synchronous signaling), SSS (SecondarySynchronizationSignal, auxiliary synchronous signaling), manage the synchronous and Frequency Synchronization of the material time supporting LTE transmission; Other instructions, such as PBCH (PhysicalBroadcastChannel, Physical Broadcast Channel) and PUCCH (PhysicalUplinkControlChannel, physical uplink control channel), carry the important information for LTE system work.UE needs to detect PSS, SSS of being used for physical layer synchronization and community ID, then carrying SFN (systemframenumber is detected, System Frame Number), the PBCH that configures of bandwidth and PHICH (PhysicalHybridARQIndicatorChannel, physical mixed automatic re-transmission indicating channel).Fig. 1 illustrates a kind of PSS, SSS and PBCH resource mapping schematic diagram for LTE TDD system.In order to reduce UE access delay and support different bandwidth, PSS, SSS and PBCH are placed in same 1.08MHz frequency band and transmit, and this frequency band is dispensed on the central authorities of whole LTE nominal band.
If malice reflector sends the enough signalings of intensity on the identical frequency band that these instructions are used, such as by high noisy or some pseudo-PSS, SSS and PBCH signalings, be injected in these central subcarriers, then UE cannot continue to be connected to community, and LTE system cannot work on.Therefore, simple malice reflector can, by being dropped on less frequency band by its all power, realize blocking wide-band communication system.Worse, because power can be focused on central 1.08MHz by malice reflector, and eNB needs more than the bandwidth of 20MHz being distributed its power, therefore narrower blocking band is that malice reflector provides 13dB gain, and the interference range of 1.08HMz can block the LTE system of 20MHz.And this reflector can carry out making or buying in the market based on the wireless demo version of software definition like a cork.Thus, how to avoid LTE system to receive barrage jamming, become those skilled in the art's problem demanding prompt solution.
Summary of the invention
The object of this invention is to provide a kind of method for LTE communication system interference process, equipment and system.
According to an aspect of the present invention, provide a kind of in the method for the treatment of facility end for LTE communication system interference process, wherein, the method comprises:
A. one or more Physical Resource Block of community to be measured for interferometry are determined;
B. interferometry is carried out to described Physical Resource Block, to determine the interference level corresponding with described community to be measured;
C. according to described interference level, the working frequency range corresponding with described community to be measured is determined.
In accordance with a further aspect of the present invention, additionally provide a kind of in the method for cooperative equipment for auxiliary LTE communication system interference process, wherein, wherein, described cooperative equipment corresponds to cooperation cell, and the method comprises:
A obtains the interference cooperation request that treatment facility sends, and wherein, described interference cooperation request comprises physical resource block message to be mourned in silence and silence period information;
B according to described in physical resource block message to be mourned in silence and described silence period information, mourned in silence in described cooperation cell.
According to another aspect of the invention, additionally provide a kind for the treatment of facility for LTE communication system interference process, wherein, this equipment comprises:
Resource determining device, for determining the one or more Physical Resource Block of community to be measured for interferometry;
First measurement mechanism, for carrying out interferometry to described Physical Resource Block, to determine the interference level corresponding with described community to be measured;
Frequency range determining device, for according to described interference level, determines the working frequency range corresponding with described community to be measured.
According to a further aspect in the invention, additionally provide a kind of cooperative equipment for auxiliary LTE communication system interference process, wherein, described cooperative equipment corresponds to cooperation cell, and this equipment comprises:
Acquisition request device, for obtaining the interference cooperation request that treatment facility sends, wherein, described interference cooperation request comprises physical resource block message to be mourned in silence and silence period information;
To mourn in silence device, for physical resource block message to be mourned in silence described in basis and described silence period information, mourned in silence in described cooperation cell.
According to a further aspect in the invention, additionally provide a kind of system for LTE communication system interference process, comprise treatment facility as described above, and cooperative equipment as described above.
Compared with prior art, the present invention is by determining the one or more Physical Resource Block of community to be measured for interferometry, and interferometry is carried out to above-mentioned Resource Block, to determine the interference level corresponding with described community to be measured, determine whether to switch the working frequency range corresponding with described community to be measured based on described interference level; Thus can detect and avoid the interference blocking that sent by low expense software, improve the robustness of anti-interference of communication system, improve the cost of malicious interference and reduce testing cost, achieve the balance-adjustable between expense/complexity and performance.
And, the present invention first can also carry out interferometry by treatment facility to the Physical Resource Block of community to be measured, to determine that the candidate corresponding with described community to be measured disturbs level, then level is disturbed according to described candidate, determine the one or more cooperation cell corresponding with described community to be measured, and send interference cooperation request to the cooperative equipment corresponding to described cooperation cell, cooperative equipment according to described in physical resource block message to be mourned in silence and described silence period information, mourned in silence in described cooperation cell, treatment facility is according to described silence period information simultaneously, interferometry is carried out to the Physical Resource Block of described community to be measured, to determine the interference level corresponding with described community to be measured, further, the present invention can also directly determine by treatment facility the silence period information that matches with described cooperation cell, or, determine according to the negotiation of cooperation cell the silence period information that described cooperation cell matches, thus testing process can be divided into 2 processes, only when candidate disturbs level to meet certain condition, just perform the cooperative detection of cooperation cell, save detection overhead, improve the accuracy of detection, reduce false alarm rate.
And the present invention can also determine the measuring period information of described community to be measured for interferometry, according to information described measuring period, interferometry is carried out to described Physical Resource Block, to determine the interference level corresponding with described community to be measured; Thus by the measuring period of adjustment interferometry, realize expense and the dynamic and easy adjustment of performance, to adapt to different scenes and configuration.
And if described interference level exceedes switching threshold, the present invention can also determine and switch the working frequency range corresponding with described community to be measured; Further, scheduling user's set on the Physical Resource Block that can also stop at described community to be measured; Thus avoid the interference blocking that sent by low expense software, and disturb to avoid data by avoiding carrying out user scheduling on the Resource Block polluted.
Accompanying drawing explanation
By reading the detailed description done non-limiting example done with reference to the following drawings, other features, objects and advantages of the present invention will become more obvious:
Fig. 1 illustrates a kind of PSS, SSS and PBCH resource mapping schematic diagram for LTE TDD system;
Fig. 2 illustrates a kind for the treatment of facility schematic diagram for LTE communication system interference process according to one aspect of the invention;
Fig. 3 illustrates a kind for the treatment of facility and the cooperative equipment schematic diagram disturbing process for LTE communication system according to another preferred embodiment of the present invention;
Fig. 4 illustrates a kind of method flow diagram for LTE communication system interference process according to a further aspect of the present invention;
Fig. 5 to illustrate in accordance with a preferred embodiment of the present invention a kind of matched with cooperative equipment by treatment facility disturb for LTE communication system the method flow diagram processed;
Fig. 6 illustrates a kind for the treatment of facility schematic diagram for LTE communication system interference process according to another preferred embodiment of the present invention;
Fig. 7 illustrates a kind of method flow diagram for LTE communication system interference process according to another preferred embodiment of the present invention;
Fig. 8 illustrates a kind of frequency range switching schematic diagram for LTE communication system interference process according to another preferred embodiment of the present invention.
In accompanying drawing, same or analogous Reference numeral represents same or analogous parts.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Fig. 2 illustrates a kind for the treatment of facility schematic diagram for LTE communication system interference process according to one aspect of the invention; Wherein, described treatment facility comprises resource determining device 11, first measurement mechanism 12, frequency range determining device 13.Particularly, described resource determining device 11 determines the one or more Physical Resource Block of community to be measured for interferometry; Described first measurement mechanism 12 carries out interferometry to described Physical Resource Block, to determine the interference level corresponding with described community to be measured; Described frequency range determining device 13, according to described interference level, determines the working frequency range corresponding with described community to be measured.
Wherein, described treatment facility includes but not limited to the base station equipment corresponding to community to be measured, also can be other equipment independent of base station.At this, described base station includes but not limited to base transceiver station (BTS, basetransceiverstation), Node B (NodeB, or claim base station), evolved base station (eNB, enhancedNodeB), various Microcell, access point and/or radio communication any terminal etc., and the data that can be described as between network and one or more user and/or voice connectivity provide the equipment of radio baseband function.
At this; those skilled in the art will be understood that the present invention can be applied to the communication system such as LTETDD (time division duplex, TimeDivisionDuplexing), LTE-ATDD, WiMAX; other communication system is also contained in protection scope of the present invention if be applicable to the present invention.
Described resource determining device 11 determines the one or more Physical Resource Block of community to be measured for interferometry.
Particularly, described resource determining device 11, by the selection strategy predetermined according to current communication networks, determines the one or more Physical Resource Block of community to be measured for interferometry.Such as, for LTE TDD system, due in order to reduce UE access delay and support different bandwidth, PSS, SSS and PBCH are placed in same 1.08MHz frequency band and transmit, this frequency band is dispensed on the central authorities of whole LTE nominal band, therefore, described resource determining device 11 using 6 central Physical Resource Block (PRB) in the up link corresponding to community to be measured as the Physical Resource Block of interferometry.The determination of described Physical Resource Block can periodic triggers or trigger based on external request.
Described first measurement mechanism 12 carries out interferometry to described Physical Resource Block, to determine the interference level corresponding with described community to be measured.
Particularly, described first measurement mechanism 12, by the predetermined Measuring Time of current communication networks, is measured the interfere with layer level of described Physical Resource Block, to determine the interference level corresponding with described community to be measured.For LTE TDD system, because transmission is all complete on not same bandwidth in the same time with receiving, therefore, at upstream time, TDD base station detects that dl interference is feasible, thus described first measurement mechanism 12 carries out interferometry to described 6 central PRB in given uplink TTI; Wherein, the combination of one or more algorithms can be adopted to measure described interfere with layer level.Such as, continue upper example, the signaling power of received 6 PRB all can be added, and be defined as interference level; Or, adopt PSS/SSS Sequence Detection algorithms; Or, the RSSI (ReceivedSignalStrengthIndicator, received signal strength indicator) between these 6 PRB can be calculated, and using described RSSI as interference level; Or when there is not cooperative detection when between cooperation cell, average cooperation cell interference etc. from RSSI substrate.
Described frequency range determining device 13, according to described interference level, determines the working frequency range corresponding with described community to be measured.
Particularly, if described interference level exceedes predetermined threshold value, then illustrate that described community to be measured exists interference, described frequency range determining device 13 determines that another frequency range different from work on hand frequency range is as the working frequency range corresponding with described community to be measured; If described interference level does not exceed predetermined threshold value, then illustrate that described community to be measured does not exist interference, then described frequency range determining device 13 determines that the working frequency range of described community to be measured is constant.Continue upper example, for LTE TDD system, each TDD base station entreats signal strength signal intensity 1.08MHz periodically monitoring and receives wherein, some levels of disturbing are greater than predetermined threshold value, then suppose to there is interference blocking on PSS, SSS and PBCH, thus described frequency range determining device 13 is using working frequency range corresponding as described community to be measured for the frequency range that is greater than 1.08MHz.
Preferably, described resource determining device 11 also comprises cycle determining unit (not shown), and wherein, described cycle determining unit determines the measuring period information of described community to be measured for interferometry; Described first measurement mechanism 12, according to information described measuring period, carries out interferometry to described Physical Resource Block, to determine the interference level corresponding with described community to be measured.
Particularly, described cycle determining unit can carry out static state setting or dynamic conditioning information measuring period for interferometry according to risk of interferences, described first measurement mechanism 12, according to information described measuring period, carries out interferometry when measuring period to described Physical Resource Block; At this, the method for measurement of described first measurement mechanism 12 in described method of measurement and Fig. 2 is same or similar, therefore does not repeat them here, and is contained in this by way of reference.
Preferably, if described interference level exceedes switching threshold, described frequency range determining device 13 is determined and is switched the working frequency range corresponding with described community to be measured.
Particularly, if the interference level measured by described first measurement mechanism 12 exceedes predefined switching threshold, then illustrate that described community to be measured exists interference, described frequency range determining device 13 determines that another frequency range different from work on hand frequency range is as the working frequency range corresponding with described community to be measured, meanwhile, the operating frequency of described community to be measured is switched in determined new operating frequency.
For LTE TDD system, some levels of disturbing are greater than predetermined threshold value, then suppose to there is interference blocking on PSS, SSS and PBCH, thus described frequency range determining device 13 is using working frequency range corresponding as described community to be measured for the frequency range that is greater than 1.08MHz, and the operating frequency of LTE TDD system is switched to be greater than 1.08MHz frequency range to avoid interference.At this, the grating of LTE system operating frequency is 100KHz.
More preferably, described treatment facility also comprises and stops dispatching device (not shown), wherein, and scheduling user's set on the Physical Resource Block that described stopping dispatching device stopping at described community to be measured.
Particularly, if described frequency range determining device 13 is determined and is switched the working frequency range corresponding with described community to be measured, then barrage jamming will no longer affect interference control channel, such as PSS, SSS and PBCH, and only affect the Physical Resource Block PRB of other carrying data channel PDSC.Thus described stopping dispatching device stopping at scheduling user's set on the above-mentioned Physical Resource Block polluted, to avoid data interference.
Fig. 3 illustrates a kind for the treatment of facility and the cooperative equipment schematic diagram disturbing process for LTE communication system according to another preferred embodiment of the present invention; Wherein, described treatment facility 1 comprises resource determining device 11 ', first measurement mechanism 12 ', cooperation determining device 14 ', send-request unit 15 ', the second measurement mechanism 16 ', frequency range determining device 13 '; Described cooperative equipment 2 comprises acquisition request device 21 ', device 22 ' of mourning in silence.Particularly, the resource determining device 11 ' of described treatment facility 1 determines the one or more Physical Resource Block of community to be measured for interferometry; Described first measurement mechanism 12 ' carries out interferometry to described Physical Resource Block, to determine that the candidate corresponding with described community to be measured disturbs level; Described cooperation determining device 14 ' disturbs level according to described candidate, determines the one or more cooperation cell corresponding with described community to be measured; Described request dispensing device 15 ' sends interference cooperation request to the cooperative equipment corresponding to described cooperation cell, and wherein, described interference cooperation request comprises physical resource block message to be mourned in silence and silence period information; Correspondingly, the interference cooperation that acquisition request device 21 ' the acquisition treatment facility of described cooperative equipment 2 sends is asked, and wherein, described interference cooperation request comprises physical resource block message to be mourned in silence and silence period information; Described physical resource block message to be mourned in silence and described silence period information described in device 22 ' basis of mourning in silence, mourns in silence to described cooperation cell; Second measurement mechanism 16 ' of described treatment facility 1, according to described silence period information, carries out interferometry to the Physical Resource Block of described community to be measured, to determine the interference level corresponding with described community to be measured; Described frequency range determining device 13 ', according to described interference level, determines the working frequency range corresponding with described community to be measured.
Wherein, the resource determining device 11 ' of described treatment facility 1, frequency range determining device 13 ' are identical with corresponding intrument shown in Fig. 2 or substantially identical, so place repeats no more, and are contained in this by way of reference.
At this, described cooperative equipment corresponds to cooperation cell, and including but not limited to the base station equipment corresponding to cooperation cell, also can be other equipment independent of base station.At this, described base station includes but not limited to base transceiver station (BTS, basetransceiverstation), Node B (NodeB, or claim base station), evolved base station (eNB, enhancedNodeB), various Microcell, access point and/or radio communication any terminal etc., and the data that can be described as between network and one or more user and/or voice connectivity provide the equipment of radio baseband function.
Described first measurement mechanism 12 ' carries out interferometry to described Physical Resource Block, to determine that the candidate corresponding with described community to be measured disturbs level.
Particularly, described first measurement mechanism 12 ', by the predetermined Measuring Time of current communication networks, is measured the interfere with layer level of described Physical Resource Block, to determine that the candidate corresponding with described community to be measured disturbs level.At this, the method for measurement of described first measurement mechanism 12 in described method of measurement and Fig. 2 is same or similar, therefore does not repeat them here, and is contained in this by way of reference.
Described cooperation determining device 14 ' disturbs level according to described candidate, determines the one or more cooperation cell corresponding with described community to be measured.
Particularly, if described candidate disturbs level not exceed predetermined threshold, then represent that described community to be measured does not exist interference, thus described cooperation determining device 14 ' can not perform other operations; If described candidate disturbs level to exceed predetermined threshold, then represent that described community to be measured has probability to be interfered obstruction, this interference blocking may be that Malware causes, also may be the normal interference produced by the signal of adjacent cell, thus described cooperation determining device 14 ' using one or more adjacent cells corresponding for described community to be measured as cooperation cell.
Described request dispensing device 15 ' sends interference cooperation request to the cooperative equipment corresponding to described cooperation cell, and wherein, described interference cooperation request comprises physical resource block message to be mourned in silence and silence period information; Correspondingly, the interference cooperation that acquisition request device 21 ' the acquisition treatment facility of described cooperative equipment 2 sends is asked, and wherein, described interference cooperation request comprises physical resource block message to be mourned in silence and silence period information.
Particularly, described request dispensing device 15 ' determines the to be mourned in silence Physical Resource Block corresponding with described cooperation cell and silence period information, wherein, described silence period information can be determined voluntarily by described treatment facility (as a certain moment behind the some time interval being defined as current time), also can be consulted determine by described cooperation cell; Such as, for LTE TDD system, the first predetermined silence period information of described request dispensing device 15 ', described silence period information is uplink TTI, then using 6 corresponding for the described cooperation cell in this silence period information central PRB as Physical Resource Block to be mourned in silence.
Then, interference cooperation, by corresponding to communication protocol and the interface of this communication system, is asked the cooperative equipment be sent to corresponding to described cooperation cell by described request dispensing device 15 '; Correspondingly, the acquisition request device 21 ' of described cooperative equipment 2 obtains this interference cooperation request.
Preferably, described request dispensing device 15 ' also comprises time determining unit (not shown), and wherein, described time determining unit determines the silence period information matched with described cooperation cell.
Particularly, described time determining unit by determining rule according to the predetermined silence period, or based on the silence period that outside is specified, determines the silence period information matched with described cooperation cell.Such as, described time determining unit can by some seconds select afterwards one to every other cooperation cell can uplink TTI be used as described silence period information.
Preferably, described silence period information can also be determined by the negotiation between cooperation cell.Particularly, described request dispensing device 15 ' sends interference cooperation request to the cooperative equipment corresponding to described cooperation cell, and wherein, described interference cooperation request comprises physical resource block message to be mourned in silence; Correspondingly, described request acquisition device 21 ' obtains the interference cooperation request that treatment facility sends, and wherein, described interference cooperation request comprises physical resource block message to be mourned in silence.Then, the candidate silence period information corresponding with described cooperation cell, according to described interference cooperation request, is sent to described treatment facility by the acquisition request device 21 ' of multiple cooperation cell; Correspondingly, described request dispensing device 15 ' obtains one or more candidate's silence period information that described cooperative equipment sends.Then, described request dispensing device 15 ', according to described one or more candidate's silence period information, determines that candidate that all cooperation cell all allows mourns in silence an information as the silence period information matched with described cooperation cell; Then described silence period information is sent to described cooperative equipment; Correspondingly, the acquisition request device 21 ' of cooperative equipment obtains the silence period information that described treatment facility sends.
Thus described cooperative equipment obtains the interference cooperation request that treatment facility sends, wherein, described interference cooperation request comprises physical resource block message to be mourned in silence and silence period information; The problem of this mode is on X2, introduce more control command consumption.
Described physical resource block message to be mourned in silence and described silence period information described in device 22 ' basis of mourning in silence, mourns in silence to described cooperation cell.
Particularly, described in mourn in silence device 22 ' according to obtained interference cooperation request in described in physical resource block message to be mourned in silence and described silence period information, in the time of described silence period information, Physical Resource Block described to be mourned in silence is mourned in silence.
Second measurement mechanism 16 ' of described treatment facility 1, according to described silence period information, carries out interferometry to the Physical Resource Block of described community to be measured, to determine the interference level corresponding with described community to be measured.
Particularly, described second measurement mechanism 16 ' is according to described silence period information, and the Physical Resource Block of moment to described community to be measured corresponding to described silence period information carries out interferometry, to determine the interference level corresponding with described community to be measured.At this, because described silence period information is identical with the silence period information of cooperation cell, therefore namely when mourning in silence in described cooperation cell, described second measurement mechanism 16 ' carries out interferometry to the Physical Resource Block of community to be measured, thus may disturbing of avoiding that cooperation cell brings interferometry.At this, the method for measurement of described first measurement mechanism 12 in described method of measurement and Fig. 2 is same or similar, therefore does not repeat them here, and is contained in this by way of reference.
Fig. 4 illustrates a kind of method flow diagram for LTE communication system interference process according to a further aspect of the present invention.Particularly, in step sl, described treatment facility determines the one or more Physical Resource Block of community to be measured for interferometry; In step s 2, described treatment facility carries out interferometry to described Physical Resource Block, to determine the interference level corresponding with described community to be measured; In step s3, described treatment facility, according to described interference level, determines the working frequency range corresponding with described community to be measured.
At this; those skilled in the art will be understood that the present invention can be applied to the communication system such as LTETDD (time division duplex, TimeDivisionDuplexing), LTE-ATDD, WiMAX; other communication system is also contained in protection scope of the present invention if be applicable to the present invention.
In step sl, described treatment facility determines the one or more Physical Resource Block of community to be measured for interferometry.
Particularly, in step sl, described treatment facility, by the selection strategy predetermined according to current communication networks, determines the one or more Physical Resource Block of community to be measured for interferometry.Such as, for LTE TDD system, due in order to reduce UE access delay and support different bandwidth, PSS, SSS and PBCH are placed in same 1.08MHz frequency band and transmit, this frequency band is dispensed on the central authorities of whole LTE nominal band, therefore, in step sl, described treatment facility using 6 central Physical Resource Block (PRB) in the up link corresponding to community to be measured as the Physical Resource Block of interferometry.The determination of described Physical Resource Block can periodic triggers or trigger based on external request.
In step s 2, described treatment facility carries out interferometry to described Physical Resource Block, to determine the interference level corresponding with described community to be measured.
Particularly, in step s 2, described treatment facility, by the predetermined Measuring Time of current communication networks, is measured the interfere with layer level of described Physical Resource Block, to determine the interference level corresponding with described community to be measured.For LTE TDD system, because transmission is all complete on not same bandwidth in the same time with receiving, therefore, at upstream time, TDD base station detects that dl interference is feasible, thus in step s 2, described treatment facility carries out interferometry to described 6 central PRB in given uplink TTI; Wherein, the combination of one or more algorithms can be adopted to measure described interfere with layer level.Such as, continue upper example, the signaling power of received 6 PRB all can be added, and be defined as interference level; Or, adopt PSS/SSS Sequence Detection algorithms; Or, the RSSI (ReceivedSignalStrengthIndicator, received signal strength indicator) between these 6 PRB can be calculated, and using described RSSI as interference level; Or when there is not cooperative detection when between cooperation cell, average cooperation cell interference etc. from RSSI substrate.
In step s3, described treatment facility, according to described interference level, determines the working frequency range corresponding with described community to be measured.
Particularly, if described interference level exceedes predetermined threshold value, then illustrate that described community to be measured exists interference, in step s3, described treatment facility determines that another frequency range different from work on hand frequency range is as the working frequency range corresponding with described community to be measured; If described interference level does not exceed predetermined threshold value, then illustrate that described community to be measured does not exist interference, then in step s3, described treatment facility determines that the working frequency range of described community to be measured is constant.Continue upper example, for LTE TDD system, each TDD base station entreats signal strength signal intensity 1.08MHz periodically monitoring and receives wherein, some levels of disturbing are greater than predetermined threshold value, then suppose to there is interference blocking on PSS, SSS and PBCH, thus in step s3, described treatment facility is using working frequency range corresponding as described community to be measured for the frequency range that is greater than 1.08MHz.
Preferably, the method also comprises step S11 (not shown), and wherein, in step s 11, described treatment facility determines the measuring period information of described community to be measured for interferometry; In step s 2, described treatment facility, according to information described measuring period, carries out interferometry to described Physical Resource Block, to determine the interference level corresponding with described community to be measured.
Particularly, in step s 11, described treatment facility can carry out static state setting or dynamic conditioning information measuring period for interferometry according to risk of interferences, in step s 2, described treatment facility, according to information described measuring period, carries out interferometry when measuring period to described Physical Resource Block; At this, the method for measurement of the described step S2 in described method of measurement and Fig. 4 is same or similar, therefore does not repeat them here, and is contained in this by way of reference.
Preferably, if described interference level exceedes switching threshold, in step s3, described treatment facility is determined and is switched the working frequency range corresponding with described community to be measured.
Particularly, if in step s 2, interference level measured by described treatment facility exceedes predefined switching threshold, then illustrate that described community to be measured exists interference, in step s3, described treatment facility determines that another frequency range different from work on hand frequency range is as the working frequency range corresponding with described community to be measured, is switched to the operating frequency of described community to be measured in determined new operating frequency meanwhile.
For LTE TDD system, some levels of disturbing are greater than predetermined threshold value, then suppose to there is interference blocking on PSS, SSS and PBCH, thus in step s3, described treatment facility using working frequency range corresponding as described community to be measured for the frequency range that is greater than 1.08MHz, and the operating frequency of LTE TDD system is switched to be greater than 1.08MHz frequency range to avoid interference.At this, the grating of LTE system operating frequency is 100KHz.
More preferably, described treatment facility also comprises step S7 (not shown), wherein, in the step s 7, and scheduling user's set on the Physical Resource Block that described treatment facility stops at described community to be measured.
Particularly, if in step s3, described treatment facility is determined and is switched the working frequency range corresponding with described community to be measured, then barrage jamming will no longer affect interference control channel, such as PSS, SSS and PBCH, and only affect the Physical Resource Block PRB of other carrying data channel PDSC.Thus in the step s 7, described treatment facility stops at scheduling user's set on the above-mentioned Physical Resource Block polluted, to avoid data interference.
Fig. 5 to illustrate in accordance with a preferred embodiment of the present invention a kind of matched with cooperative equipment by treatment facility disturb for LTE communication system the method flow diagram processed.Particularly, in step S1 ', described treatment facility 1 determines the one or more Physical Resource Block of community to be measured for interferometry; In step S2 ', described treatment facility 1 carries out interferometry to described Physical Resource Block, to determine that the candidate corresponding with described community to be measured disturbs level; In step S4 ', described treatment facility 1 disturbs level according to described candidate, determines the one or more cooperation cell corresponding with described community to be measured; In step S5 ', described treatment facility 1 sends interference cooperation request to the cooperative equipment corresponding to described cooperation cell, and wherein, described interference cooperation request comprises physical resource block message to be mourned in silence and silence period information; Correspondingly, in step S5 ', described cooperative equipment 2 obtains the interference cooperation request that treatment facility sends, and wherein, described interference cooperation request comprises physical resource block message to be mourned in silence and silence period information; In step S61 ', described cooperative equipment 2, according to physical resource block message described to be mourned in silence and described silence period information, is mourned in silence to described cooperation cell; In step S62 ', described treatment facility 1, according to described silence period information, carries out interferometry to the Physical Resource Block of described community to be measured, to determine the interference level corresponding with described community to be measured; In step S3 ', described treatment facility 1, according to described interference level, determines the working frequency range corresponding with described community to be measured.
Wherein, shown in the step S1 ' of described treatment facility 1, step S3 ' with Fig. 4, corresponding step is identical or substantially identical, so place repeats no more, and is contained in this by way of reference.
In step S2 ', described treatment facility 1 carries out interferometry to described Physical Resource Block, to determine that the candidate corresponding with described community to be measured disturbs level.
Particularly, in step S2 ', described treatment facility 1, by the predetermined Measuring Time of current communication networks, is measured the interfere with layer level of described Physical Resource Block, to determine that the candidate corresponding with described community to be measured disturbs level.At this, the method for measurement of the described step S2 in described method of measurement and Fig. 4 is same or similar, therefore does not repeat them here, and is contained in this by way of reference.
In step S4 ', described treatment facility 1 disturbs level according to described candidate, determines the one or more cooperation cell corresponding with described community to be measured.
Particularly, if described candidate disturbs level not exceed predetermined threshold, then represent that described community to be measured does not exist interference, thus in step S4 ', described treatment facility 1 can not perform other operations; If described candidate disturbs level to exceed predetermined threshold, then represent that described community to be measured has probability to be interfered obstruction, this interference blocking may be that Malware causes, also may be the normal interference produced by the signal of adjacent cell, thus in step S4 ', described treatment facility 1 using one or more adjacent cells corresponding for described community to be measured as cooperation cell.
In step S5 ', described treatment facility 1 sends interference cooperation request to the cooperative equipment corresponding to described cooperation cell, and wherein, described interference cooperation request comprises physical resource block message to be mourned in silence and silence period information; Correspondingly, in step S5 ', described cooperative equipment 2 obtains the interference cooperation request that treatment facility sends, and wherein, described interference cooperation request comprises physical resource block message to be mourned in silence and silence period information.
Particularly, in step S5 ', described treatment facility 1 determines the to be mourned in silence Physical Resource Block corresponding with described cooperation cell and silence period information, wherein, described silence period information can be determined voluntarily by described treatment facility (as a certain moment behind the some time interval being defined as current time), also can be consulted determine by described cooperation cell; Such as, for LTE TDD system, in step S5 ', the first predetermined silence period information of described treatment facility 1, described silence period information is uplink TTI, then using 6 corresponding for the described cooperation cell in this silence period information central PRB as Physical Resource Block to be mourned in silence.
Then, in step S5 ', interference cooperation, by corresponding to communication protocol and the interface of this communication system, is asked the cooperative equipment be sent to corresponding to described cooperation cell by described treatment facility 1; Correspondingly, in step S5 ', described cooperative equipment 2 obtains this interference cooperation request.
Preferably, described method also comprises step S51 ' (not shown), and wherein, in step S51 ', described treatment facility 1 determines the silence period information matched with described cooperation cell.
Particularly, in step S51 ', described treatment facility 1 by determining rule according to the predetermined silence period, or based on the silence period that outside is specified, determines the silence period information matched with described cooperation cell.Such as, in step S51 ', described treatment facility 1 can by some seconds select afterwards one to every other cooperation cell can uplink TTI be used as described silence period information.
Preferably, described silence period information can also be determined by the negotiation between cooperation cell.Particularly, in step S5 ', described treatment facility 1 sends interference cooperation request to the cooperative equipment corresponding to described cooperation cell, and wherein, described interference cooperation request comprises physical resource block message to be mourned in silence; Correspondingly, in step S5 ', described cooperative equipment 2 obtains the interference cooperation request that treatment facility sends, and wherein, described interference cooperation request comprises physical resource block message to be mourned in silence.Then, in step S5 ', candidate's silence period information corresponding with described cooperation cell, according to described interference cooperation request, is sent to described treatment facility by multiple described cooperative equipment 2; Correspondingly, in step S5 ', described treatment facility 1 obtains one or more candidate's silence period information that described cooperative equipment sends.Then, in step S5 ', described treatment facility 1, according to described one or more candidate's silence period information, determines that candidate that all cooperation cell all allows mourns in silence an information as the silence period information matched with described cooperation cell; Then described silence period information is sent to described cooperative equipment; Correspondingly, in step S5 ', described cooperative equipment 2 obtains the silence period information that described treatment facility sends.
Thus described cooperative equipment obtains the interference cooperation request that treatment facility sends, wherein, described interference cooperation request comprises physical resource block message to be mourned in silence and silence period information; The problem of this mode is on X2, introduce more control command consumption.
In step S61 ', described cooperative equipment 2, according to physical resource block message described to be mourned in silence and described silence period information, is mourned in silence to described cooperation cell.
Particularly, in step S61 ', described cooperative equipment 2 according to obtained interference cooperation request in described in physical resource block message to be mourned in silence and described silence period information, in the time of described silence period information, Physical Resource Block described to be mourned in silence is mourned in silence.
In step S62 ', described treatment facility 1, according to described silence period information, carries out interferometry to the Physical Resource Block of described community to be measured, to determine the interference level corresponding with described community to be measured.
Particularly, in step S62 ', described treatment facility 1 is according to described silence period information, and the Physical Resource Block of moment to described community to be measured corresponding to described silence period information carries out interferometry, to determine the interference level corresponding with described community to be measured.At this, because described silence period information is identical with the silence period information of cooperation cell, therefore namely when mourning in silence in described cooperation cell, in step S62 ', described treatment facility 1 carries out interferometry to the Physical Resource Block of community to be measured, thus may disturbing of avoiding that cooperation cell brings interferometry.At this, the method for measurement of the described step S2 in described method of measurement and Fig. 4 is same or similar, therefore does not repeat them here, and is contained in this by way of reference.
Fig. 6 illustrates a kind for the treatment of facility schematic diagram for LTE communication system interference process according to another preferred embodiment of the present invention.Described treatment facility comprises four modules: block and avoid dispatching device, interference detecting apparatus, obstruction determining device, cooperative detection to act on behalf of.
Wherein, described obstruction avoids dispatching device for making a reservation for 6 central PRB in the uplink for interference monitoring, and indicates interference detecting apparatus to weigh level of interference on given TTI.Can periodic triggers or the request triggering according to cooperative detection agency to the predetermined of PRB.
Described interference detecting apparatus is for measuring the interference level of 6 central PRB.At this, the method for measurement of described first measurement mechanism 12 in described method of measurement and Fig. 2 is same or similar, therefore does not repeat them here, and is contained in this by way of reference.
Described obstruction determining device will be used in the interference blocking determining whether there is and meet level of interference.Two threshold values can be set in this module.Threshold value 1 is used to determine whether detection trigger cooperation between cooperation cell (i.e. adjacent cell).Threshold value 2 is used to determine whether there is interference blocking.Once interference detecting apparatus determines to there is interference blocking, then the operating frequency of LTE TDD system will be switched to be greater than 1.08MHz frequency range to avoid interference.At this, the grating of LTE system operating frequency is 100KHz.
Described cooperative detection agency is used for receiving request from interference detection module, and by the X2 interface that comprises target TTI by this request forward to all cooperation cell.In target TTI, all cooperation cell will keep up link without making an uproar by 6 central PRB not being dispensed to any user on 6 central PRB, thus interference detecting apparatus by performing high-precision interferometry, and can not be subject to the impact of internal zone interference.
At this, those skilled in the art will be understood that described cooperative detection agency can be a module in described treatment facility, also can be the third party devices independent of described treatment facility.
Fig. 7 illustrates a kind of method flow diagram for LTE communication system interference process according to another preferred embodiment of the present invention.
Particularly, in step S71, block and avoid dispatching device periodically in given uplink TTI, 6 central PRB of weighting of noise will be intended for.This cycle can carry out static state setting or dynamic conditioning according to risk of interferences.In step S72, whenever having arrived the possible interferometry time, blocking and avoiding dispatching device will send " Interference Detection request " to indicate interference detection module.
Once accept " Interference Detection request ", in step S73, interference detecting apparatus will perform interferometry on described 6 central PRB.At this, the method for measurement of described first measurement mechanism 12 in described method of measurement and Fig. 2 is same or similar, therefore does not repeat them here, and is contained in this by way of reference.In step S74, described interference detection results is encapsulated in " interference level report " and be sent to obstruction determining device.
In step S75, the interference level measured by described obstruction determining device obtains from " report of interference level ", and itself and threshold value 1 are contrasted.If described interference level is less than threshold value 1, so do not perform any operation.Otherwise some levels of disturbing are larger than threshold value 1, then in step S76, described obstruction determining device will send, and " Interference Detection cooperation request ", to cooperative detection agency, detects interference to ask for help to cooperation cell.
Once receive described request, in step S77, described cooperative detection agency needs to determine the target TTI (i.e. silence period information) being carried out all cooperation cell of message by X2 interface.When all adjacent cells keep mourning in silence on 6 central PRB, described target TTI is uplink TTI.Described target TTI can by cooperative detection proxy module self, by select afterwards in some seconds one determine this resource be to every other community can uplink TTI determine.In addition, described target TTI can also be determined by the negotiation between different districts, and this method introduces more control command consumption on X2.Once obtain described target TTI, in step S78, cooperative detection agency sends described target TTI by " target TTI instruction " and avoids dispatching device to described obstruction.
In step S79, after reception " target TTI instruction ", described obstruction avoids dispatching device will make a reservation for 6 central PRB on target TTI, and in step S710, sends a message to interference detecting apparatus, request interferometry.
In step S711, described interference detection module measurements interference level also, in step S712, is reported to disturbing determination module.
In step S713, block determining device and described interference level and threshold value 2 are compared.If described interference level is less than threshold value 2, so do not perform any operation.The former high interference is considered to be transmitted caused by the high-power UE that has at cell edge.Some levels of disturbing are larger than threshold value 2, then suppose to there is interference blocking on PSS, SSS and PBCH.In this case, LTETDD base station will switching frequency.
Fig. 8 illustrates a kind of frequency range switching schematic diagram for LTE communication system interference process according to another preferred embodiment of the present invention.
Particularly, because LTE system grating is 100KHz, therefore need to carry out switching to avoid interference at least 1.1MHz.After frequency error factor, interference blocking will be fallen on other 6 or 7 PRB, and measures according to the CQI feedback on down link and up link or SRS respectively, and treatment facility can utilize He Ne laser to dispatch to avoid this interference.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present invention or essential characteristic, the present invention can be realized in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present invention is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the present invention.Any Reference numeral in claim should be considered as the claim involved by limiting.In addition, obviously " comprising " one word do not get rid of other unit or step, odd number does not get rid of plural number.Multiple unit of stating in device claim or device also can be realized by software or hardware by a unit or device.First, second word such as grade is used for representing title, and does not represent any specific order.
Claims (15)
1. be used for a method for LTE communication system interference process at treatment facility end, wherein, the method comprises:
A. one or more Physical Resource Block of community to be measured for interferometry are determined;
B. interferometry is carried out to described Physical Resource Block, to determine the interference level corresponding with described community to be measured;
C. according to described interference level, the working frequency range corresponding with described community to be measured is determined.
2. method according to claim 1, wherein, described step b comprises:
-interferometry is carried out to described Physical Resource Block, to determine that the candidate corresponding with described community to be measured disturbs level;
Wherein, the method also comprises:
-disturb level according to described candidate, determine the one or more cooperation cell corresponding with described community to be measured;
X sends interference cooperation request to the cooperative equipment corresponding to described cooperation cell, and wherein, described interference cooperation request comprises physical resource block message to be mourned in silence and silence period information;
-according to described silence period information, interferometry is carried out to the Physical Resource Block of described community to be measured, to determine the interference level corresponding with described community to be measured.
3. method according to claim 2, wherein, described step x also comprises:
-determine the silence period information that matches with described cooperation cell.
4. method according to claim 2, wherein, described step x comprises:
-send interference cooperation request to the cooperative equipment corresponding to described cooperation cell, wherein, described interference cooperation request comprises physical resource block message to be mourned in silence;
-obtain one or more candidate's silence period information that described cooperative equipment sends;
-according to described candidate's silence period information, determine the silence period information matched with described cooperation cell;
-described silence period information is sent to described cooperative equipment.
5. method according to any one of claim 1 to 4, wherein, described step a also comprises:
-determine the measuring period information of described community to be measured for interferometry;
Wherein, described step b comprises:
-according to information described measuring period, interferometry is carried out to described Physical Resource Block, to determine the interference level corresponding with described community to be measured.
6. method according to any one of claim 1 to 5, wherein, described step c comprises:
Disturb level to exceed switching threshold described in-Ruo, determine and switch the working frequency range corresponding with described community to be measured.
7. method according to claim 6, wherein, the method also comprises:
-stop at described community to be measured Physical Resource Block on scheduling user's set.
8. be used for a method for auxiliary LTE communication system interference process in cooperative equipment, wherein, wherein, described cooperative equipment corresponds to cooperation cell, and the method comprises:
A obtains the interference cooperation request that treatment facility sends, and wherein, described interference cooperation request comprises physical resource block message to be mourned in silence and silence period information;
B according to described in physical resource block message to be mourned in silence and described silence period information, mourned in silence in described cooperation cell.
9. method according to claim 8, wherein, described steps A comprises:
The interference cooperation request that-acquisition treatment facility sends, wherein, described interference cooperation request comprises physical resource block message to be mourned in silence;
-the candidate silence period information corresponding with described cooperation cell is sent to described treatment facility;
-obtain the silence period information that described treatment facility sends.
10., for a treatment facility for LTE communication system interference process, wherein, this equipment comprises:
Resource determining device, for determining the one or more Physical Resource Block of community to be measured for interferometry;
First measurement mechanism, for carrying out interferometry to described Physical Resource Block, to determine the interference level corresponding with described community to be measured;
Frequency range determining device, for according to described interference level, determines the working frequency range corresponding with described community to be measured.
11. treatment facilities according to claim 10, wherein, described first measurement mechanism is used for:
-interferometry is carried out to described Physical Resource Block, to determine that the candidate corresponding with described community to be measured disturbs level;
Wherein, this equipment also comprises:
Cooperation determining device, for disturbing level according to described candidate, determines the one or more cooperation cell corresponding with described community to be measured;
Send-request unit, for sending the cooperative equipment corresponding to interference cooperation request to described cooperation cell, wherein, described interference cooperation request comprises physical resource block message to be mourned in silence and silence period information;
Second measurement mechanism, for according to described silence period information, carries out interferometry to the Physical Resource Block of described community to be measured, to determine the interference level corresponding with described community to be measured.
12. treatment facilities according to claim 11, wherein, described request dispensing device also comprises:
Time determining unit, for determining the silence period information matched with described cooperation cell.
13. according to claim 10 to the treatment facility according to any one of 12, and wherein, described resource determining device also comprises:
Cycle determining unit, for determining the measuring period information of described community to be measured for interferometry;
Wherein, described first measurement mechanism is used for:
-according to information described measuring period, interferometry is carried out to described Physical Resource Block, to determine the interference level corresponding with described community to be measured.
14. 1 kinds of cooperative equipment for auxiliary LTE communication system interference process, wherein, described cooperative equipment corresponds to cooperation cell, and this equipment comprises:
Acquisition request device, for obtaining the interference cooperation request that treatment facility sends, wherein, described interference cooperation request comprises physical resource block message to be mourned in silence and silence period information;
To mourn in silence device, for physical resource block message to be mourned in silence described in basis and described silence period information, mourned in silence in described cooperation cell.
15. 1 kinds, for the system of LTE communication system interference process, comprise the treatment facility according to any one of claim 10 to 13, and cooperative equipment as claimed in claim 14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410370851.5A CN105338558B (en) | 2014-07-30 | 2014-07-30 | A kind of method, equipment and system for LTE communication system interference processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410370851.5A CN105338558B (en) | 2014-07-30 | 2014-07-30 | A kind of method, equipment and system for LTE communication system interference processing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105338558A true CN105338558A (en) | 2016-02-17 |
| CN105338558B CN105338558B (en) | 2019-06-18 |
Family
ID=55288755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410370851.5A Active CN105338558B (en) | 2014-07-30 | 2014-07-30 | A kind of method, equipment and system for LTE communication system interference processing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105338558B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106658527A (en) * | 2016-11-11 | 2017-05-10 | 中国移动通信集团江苏有限公司 | Method and apparatus for reducing TDD-LTE long-range same-frequency interference |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101111048A (en) * | 2007-08-15 | 2008-01-23 | 中兴通讯股份有限公司 | Method for dynamic regulation of wireless resource block configuration based on offset |
| CN102932930A (en) * | 2011-08-10 | 2013-02-13 | 华为技术有限公司 | Resource scheduling method, wireless access equipment and communication system |
| CN103945556A (en) * | 2013-01-21 | 2014-07-23 | 电信科学技术研究院 | Method, system and equipment for resource scheduling |
-
2014
- 2014-07-30 CN CN201410370851.5A patent/CN105338558B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101111048A (en) * | 2007-08-15 | 2008-01-23 | 中兴通讯股份有限公司 | Method for dynamic regulation of wireless resource block configuration based on offset |
| CN102932930A (en) * | 2011-08-10 | 2013-02-13 | 华为技术有限公司 | Resource scheduling method, wireless access equipment and communication system |
| CN103945556A (en) * | 2013-01-21 | 2014-07-23 | 电信科学技术研究院 | Method, system and equipment for resource scheduling |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106658527A (en) * | 2016-11-11 | 2017-05-10 | 中国移动通信集团江苏有限公司 | Method and apparatus for reducing TDD-LTE long-range same-frequency interference |
| CN106658527B (en) * | 2016-11-11 | 2019-12-13 | 中国移动通信集团江苏有限公司 | device and method for reducing TDD-LTE (time division duplex-long term evolution) remote co-channel interference |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105338558B (en) | 2019-06-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110381531B (en) | Measurement configuration and reporting method, device and user equipment | |
| TWI746714B (en) | Access terminal radio link monitoring (rlm) on a shared communication medium | |
| US9635575B2 (en) | Minimization drive test with reduced wireless device memory usage | |
| US10129782B2 (en) | Methods and apparatus for CSI measurement configuration and reporting on unlicensed spectrum | |
| US11496977B2 (en) | User apparatus, base station, discovery signal reception method and discovery signal transmission method | |
| WO2019062567A1 (en) | Communication method and apparatus | |
| KR102046490B1 (en) | A method and system for minimizing power consumption of user equipment during cell detection | |
| US11228382B2 (en) | Controlling the channel occupancy measurement quality | |
| JP2016509801A (en) | Method for jammer detection and avoidance in long term evolution (LTE) networks | |
| CN110800333B (en) | Method and apparatus for communication | |
| US11711154B2 (en) | Method of reporting RSSI measurements in an unlicensed band and related apparatus | |
| US10945156B2 (en) | User equipment that controls broadcast information and base station that controls broadcast information | |
| CA2901095C (en) | Mitigating interference with wireless communications | |
| CN113261376A (en) | Adaptive sensing mechanism for unlicensed networks | |
| US20220014943A1 (en) | Measurement method and apparatus, and device | |
| JP7278407B2 (en) | Downlink clear channel evaluation failure indication | |
| US10588134B2 (en) | Radio channel allocation for wireless interface using ultra low power nodes | |
| US20160249226A1 (en) | Wireless communication method and apparatus | |
| US20230090571A1 (en) | Interference detection apparatus, radio base station, interference detection method, and program | |
| US20210160891A1 (en) | User equipment and reference signal transmission method | |
| CN105392148A (en) | Signal measurement and reporting method, user equipment, and base station | |
| CN105338558A (en) | Interference processing method, device and system for LTE communication system | |
| WO2015171296A1 (en) | Maximum pathloss measurement for broadcast communication | |
| US20150319678A1 (en) | Method and apparatus for anti-blocking hetnet deployment | |
| EP2991401A1 (en) | Mobility management method, device and system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 201206 ningqiao Road, Pudong New Area China (Shanghai) free trade test area, Pudong New Area, Shanghai Applicant after: Shanghai NOKIA Baer Limited by Share Ltd Address before: 201206 Pudong New Area Jinqiao Ning Road, Shanghai, No. 388 Applicant before: Shanghai Alcatel-Lucent Co., Ltd. |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |