CN102082581B - Mobile communication terminal and realize the method and system that different communication systems coexists - Google Patents
Mobile communication terminal and realize the method and system that different communication systems coexists Download PDFInfo
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- CN102082581B CN102082581B CN200910241417.6A CN200910241417A CN102082581B CN 102082581 B CN102082581 B CN 102082581B CN 200910241417 A CN200910241417 A CN 200910241417A CN 102082581 B CN102082581 B CN 102082581B
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Abstract
The invention discloses a kind of mobile communication terminal, comprise radio-frequency (RF) transceiver, filter is increased in described radio-frequency (RF) transceiver, for descending the signal within the scope of filtration first designated frequency band in working order, realize described radio-frequency (RF) transceiver and be transformed into signal within the scope of transmitting-receiving first designated frequency band by the signal received and dispatched within the scope of the second designated frequency band, described first designated frequency band scope is within the scope of the second designated frequency band; And switching device, for closed under the triggering of corresponding triggering signal, control described filter and enter operating state; Described mobile communication terminal also comprises: triggering signal generating apparatus, for when judging that described mobile communication terminal is under the environment that different system coexists, generates for triggering the closed triggering signal of described switching device and sending to described switching device.The invention also discloses the corresponding method and system realizing different communication systems and coexist.
Description
Technical field
The present invention relates to mobile communication technology field, especially relate to a kind of mobile communication terminal and realize the method and system that different communication systems coexists.
Background technology
At present, when coexisting in same geographic area between different wireless communication system, non-linear due to transmitter and receiver, can produce and interfere with each other, if do not solve the decline that will cause systematic function, even cause system to work time serious.
For transmitter, non-linear due to devices such as power amplifiers, can cause and produce useless transmitting outward at transmitted bandwidth, adjacent channel leakage ratio (ACLR can be used respectively according to the difference in frequency effect territory, AdjacentChannelLeakageRatio), Spectrum Emission Mask (Spectrumemissionmask, SEM) and stray radiation (spuriousemission) weigh, if index definition is unreasonable, transmits in the working frequency range of other system receiver and will the receiver sensitivity of victim system be caused to reduce or block; For receiver, non-linear due to the device such as amplifier, frequency mixer, when the interference strength of side channel is too high, the intermodulation interference signal that interference signal and receiver local oscillator produce drops on the loss of sensitivity that will cause receiver in receiver bandwidth, and when filter for receiver decay is not enough, cross strong adjacent frequency interference signal and may cause the saturation of receiver, system cannot normally work.
At present, when different wireless communication system coexists in same geographic area, to interference source transmitter and victim system receiver, the required index that coexists can be proposed respectively.The general requirement coexisted as transmitter in different communication systems using ACLR, SEM and spuriousemission index that coexists, and to coexist adjacent-channel selectivity (ACS, adjacent-channelselectivity) and block the requirement that coexists as receiver in different communication systems of (blocking) index.
Such as Long Term Evolution (LTE, LongTermEvolution) communication system, it operates mainly in the band limits of 2300-2400MHz and 2500-2690MHz, and simultaneously WLAN (wireless local area network) (WLAN, WirelessLocalAreaNetworks) communication system is but operate mainly in 2400-2483.5MHz band limits, if the coexistence problems between unreasonable solution LTE communication system and WLAN communication system, mobile communication terminal will be caused when being moved in the region that these two communication systems cover jointly, be subject to the interference of signal in another one communication system owing to using a communication system to carry out communicating and cause the decline of communication performance.
Summary of the invention
The embodiment of the present invention provides a kind of mobile communication terminal and realizes the method and system that different communication systems coexists, and is in the coverage of LTE communication system and WLAN coexistence of communication systems in order to solve mobile communication terminal, the problem that communication performance declines.
For solving the problem, embodiments provide a kind of mobile communication terminal, comprise radio-frequency (RF) transceiver, increase in described radio-frequency (RF) transceiver: filter, for descending the signal within the scope of filtration first designated frequency band in working order, realize described radio-frequency (RF) transceiver and be transformed into signal within the scope of transmitting-receiving first designated frequency band by the signal received and dispatched within the scope of the second designated frequency band, described first designated frequency band scope is within the scope of the second designated frequency band; And switching device, for closed under the triggering of corresponding triggering signal, control described filter and enter operating state; Described mobile communication terminal also comprises: triggering signal generating apparatus, for when judging that described mobile communication terminal is under the environment that different system coexists, generates for triggering the closed triggering signal of described switching device and sending to described switching device.
The embodiment of the present invention also provides a kind of method realizing different communication systems and coexist, comprise: mobile communication terminal, when judging self to be under the environment that different system coexists, generates for triggering the closed triggering signal of the switching device that increases in self radio-frequency (RF) transceiver and sending to described switching device; Described switching device is closed under the triggering of closed triggering signal, and the filter controlling to increase in described radio-frequency (RF) transceiver enters operating state; Described filter descends the signal within the scope of filtration first designated frequency band in working order, realize described radio-frequency (RF) transceiver and be transformed into signal within the scope of transmitting-receiving first designated frequency band by the signal received and dispatched within the scope of the second designated frequency band, described first designated frequency band scope is within the scope of the second designated frequency band.
The embodiment of the present invention also provides a kind of system coexisted by different communication systems, and comprise and be in base station in the common overlay area of described different communication systems and mobile communication terminal, wherein said base station, for the instruction that coexists to described mobile communication terminal indication mechanism; Described mobile communication terminal, for when receiving the coexistence of systems instruction of described base station instruction, generate for triggering the closed triggering signal of the switching device that increases in self radio-frequency (RF) transceiver and sending to described switching device, described switching device is closed under the triggering of corresponding triggering signal, and the filter controlling to increase in described radio-frequency (RF) transceiver enters operating state; Described filter descends the signal within the scope of filtration first designated frequency band in working order, realize described radio-frequency (RF) transceiver and be transformed into signal within the scope of transmitting-receiving first designated frequency band by the signal received and dispatched within the scope of the second designated frequency band, described first designated frequency band scope is within the scope of the second designated frequency band.
The embodiment of the present invention is by increasing new filter and switching device in radio-frequency (RF) transceiver in mobile communication terminals, and when mobile communication terminal is determined self to be under the environment that different system coexists, generate for triggering triggering signal that newly-increased switching device closes and sending to newly-increased switching device; Newly-increased switching device closes the filter controlling to increase newly and enters operating state under the triggering of corresponding triggering signal; Newly-increased filter can filter the signal within the scope of the first designated frequency band when entering under operating state, to be transformed into signal within the scope of transmitting-receiving first designated frequency band by the signal received and dispatched within the scope of the second designated frequency band to realize radio-frequency (RF) transceiver, wherein the first designated frequency band scope is within the scope of the second designated frequency band.So just can realize when in the overlay area that mobile communication terminal enters different wireless communication coexistence of systems, the band limits of self receiving and transmitting signal is reduced, vacant go out wider band limits be used as transition band, thus the signal interference that self is produced that can reduce when using current communication networks to communicate in another communication system, thus time in the overlay area self being moved into different wireless communication coexistence of systems, improve the communication performance of self.
Accompanying drawing explanation
Below in conjunction with each accompanying drawing, more detailed elaboration is carried out to the embodiment of the embodiment of the present invention, wherein in various figures:
Fig. 1 is the first embodiment electrical block diagram radio-frequency (RF) transceiver in TDD mobile communication terminal being set up to filter and switching device;
Fig. 2 is the second embodiment electrical block diagram radio-frequency (RF) transceiver in TDD mobile communication terminal being set up to filter and switching device;
Fig. 3 is the 3rd embodiment electrical block diagram radio-frequency (RF) transceiver in TDD mobile communication terminal being set up to filter and switching device;
Fig. 4 is the 4th embodiment electrical block diagram radio-frequency (RF) transceiver in TDD mobile communication terminal being set up to filter and switching device;
Fig. 5 is the first embodiment electrical block diagram radio-frequency (RF) transceiver in FDD mobile communication terminal being set up to filter and switching device;
Fig. 6 is the second embodiment electrical block diagram radio-frequency (RF) transceiver in FDD mobile communication terminal being set up to filter and switching device;
Fig. 7 is the first embodiment processing procedure schematic diagram that mobile communication terminal generates corresponding triggering signal;
Fig. 8 is the second embodiment processing procedure schematic diagram that mobile communication terminal generates corresponding triggering signal;
Fig. 9 is the 3rd embodiment processing procedure schematic diagram that mobile communication terminal generates corresponding triggering signal;
Figure 10 is the 4th embodiment processing procedure schematic diagram that mobile communication terminal generates corresponding triggering signal;
Figure 11 is the schematic diagram that under indoor scene, WLAN communication system and LTE communication system coexist.
Figure 12 is the schematic diagram that under indoor scene, FDD communication system and tdd communication system coexist.
Embodiment
Such as here using the index request that spuriousemission index coexists as transmitter in LTE communication system and WLAN communication system, using the index request that blocking index coexists as receiver in LTE communication system and WLAN communication system, the spuriousemission index that usual transmitter coexists is with receiver sensitivity loss 0.8dB/3dB for criterion, and the blocking index that receiver coexists loses 0.8dB/3dB for criterion with the receiver sensitivity that intermodulation product causes.Analyze known as calculated, the most serious problems affecting LTE communication system and WLAN coexistence of communication systems are in the interference problem between the different mobile communication terminal in two communication systems, when also there is WLAN wireless communication system when especially both there is LTE wireless communication system in indoor, WLAN terminal is disturbed the spuriousemission that LTE terminal causes and blocking disturbs and LTE terminal is disturbed the spuriousemission that WLAN terminal causes and blocking interference is as shown in table 1 below:
| Spurious emission disturbs | Blocking disturbs | |
| LTE terminal is to WLAN terminal | 75dB | 63dB |
| WLAN terminal is to LTE terminal | 65dB | 71dB |
Based on above-mentioned analysis, the embodiment of the present invention mainly utilizes terminal software measuring amount to combine with hardware capability here, based on minimum terminal cost recruitment, solve the problem coexisted between LTE communication system and WLAN communication system, to improve the availability of frequency spectrum of LTE communication system and to make LTE mobile communication terminal under the environment of LTE communication system and WLAN coexistence of communication systems, the communication performance of self can be improved.
First, the mobile communication terminal that the embodiment of the present invention proposes, by improving respectively inner software and hardware part, concrete improvements are included in original radio-frequency (RF) transceiver to be increased filter and drives switching device, and realize a triggering signal generating apparatus functional module at therein, wherein the concrete effect of these parts is as follows:
Triggering signal generating apparatus, under judging whether the mobile communication terminal at self place is in the environment that different communication systems coexists, if be in, generate for triggering triggering signal that newly-increased switching device closes and sending to this newly-increased switching device, alternatively, if be not in, generate the triggering signal for triggering newly-increased switching device unlatching and send to this newly-increased switching device;
Newly-increased switching device, the filter controlling to increase newly for closed under the triggering of corresponding triggering signal or unlatching enters normal operating conditions or exits normal operating conditions;
Newly-increased filter, for filtering the signal within the scope of the first designated frequency band when entering under normal operating conditions, to be transformed into signal within the scope of transmitting-receiving first designated frequency band by the signal originally received and dispatched within the scope of the second designated frequency band to realize radio-frequency (RF) transceiver, wherein the first designated frequency band scope is within the scope of the second designated frequency band; Alternatively, when exiting under normal operating conditions, realize the state that radio-frequency (RF) transceiver returns to original transmitting-receiving the second designated frequency band range signals.
By above-mentioned, software and hardware in mobile communication terminal is improved, just can realize when in the overlay area that mobile communication terminal enters different wireless communication coexistence of systems, the band limits of self receiving and transmitting signal is reduced, vacant go out band limits be used as transition band, and when shifting out the overlay area of different wireless communication coexistence of systems, recover to use original band limits receiving and transmitting signal, thus the signal interference that self is produced that can reduce when using current communication networks to communicate in another communication system, and then improve the communication performance of self.In addition, the high pass increased in original radio-frequency (RF) transceiver or low pass or the device cost such as band pass filter and switch are all relatively cheap, therefore the cost that realizes of the embodiment of the present invention is made to reduce, and the radio-frequency (RF) transceiver in mobile communication terminal only has end to be just operated under coexistence of systems environment in narrower band limits, when terminal is not under coexistence of systems environment, radio-frequency (RF) transceiver can be recovered to use original wider band limits, thus improves the availability of frequency spectrum preferably.
The above-mentioned improvement that wherein embodiment of the present invention proposes can be, but not limited to time division duplex (TDD, TimeDivisionDuplex) mobile communication terminal and Frequency Division Duplexing (FDD) (FDD, FrequencyDivisionDuplex) mobile communication terminal improve.
As shown in Figure 1, for setting up the first embodiment electrical block diagram of filter and switching device to the radio-frequency (RF) transceiver in TDD mobile communication terminal, filter and switching device that the transmitter in this figure in radio-frequency (RF) transceiver and receiver independently use at least one group to increase newly.
As shown in Figure 2, for setting up the second embodiment electrical block diagram of filter and switching device to the radio-frequency (RF) transceiver in TDD mobile communication terminal, the transmitter in this figure in radio-frequency (RF) transceiver and receiver share at least one group of filter and switching device that increase newly.
Wherein in above-mentioned Fig. 1, FL1, FL2, FL3, S1, S2, S3, S4 are newly-increased components and parts, FL4 and FL5 is band pass filter, and passband is determined by the working frequency range of terminal, generally equals the bandwidth of working frequency range.FL1, S1 are option, whether meet code requirement determine whether needs according to the transmitting spuriousemission index after power amplifier.If FL1 low pass filter, its passband cut-off point should between the minimum and highest frequency of the normal working frequency range of terminal, if FL1 high pass filter, its passband starting point should between the minimum and highest frequency of the normal working frequency range of terminal, the passband of FL2-FL3 should be less than normal working frequency range bandwidth, is specifically decided by the demand of coexisting and terminal fulfillment capability.
Wherein in above-mentioned Fig. 2, FL1, FL2, S1, S2, S3, S4 are newly-increased components and parts, FL3 and FL4 is band pass filter, and passband is determined by the working frequency range of terminal, generally equals the bandwidth of working frequency range.FL1, S2 are option, whether meet code requirement determine whether needs according to the transmitting spuriousemission index after power amplifier.The passband of FL1-FL2 should be less than normal working frequency range bandwidth, is specifically decided by the demand of coexisting and terminal fulfillment capability.
As shown in Figure 3, for setting up the 3rd embodiment electrical block diagram of filter and switching device to the radio-frequency (RF) transceiver in TDD mobile communication terminal, multiple filters newly-increased in radio-frequency (RF) transceiver in this figure are cascaded, and transmitter in radio-frequency (RF) transceiver and receiver independently use at least one group of newly-increased filter and switching device.
In Fig. 3, FL1, FL2, FL3, S1, S2, S3, S4 are newly-increased components and parts, FL4 and FL5 is band pass filter, and passband is determined by the working frequency range of terminal, generally equals the bandwidth of working frequency range.FL1, S1 are options, whether meet code requirement determine whether needs according to the transmitting spuriousemission index after power amplifier; If FL1-FL3 low pass filter, its passband cut-off point should between the minimum and highest frequency of the normal working frequency range of terminal, if FL1-FL3 high pass filter, its passband starting point between the minimum and highest frequency of the normal working frequency range of terminal, specifically should be decided by the demand of coexisting and terminal fulfillment capability.
As shown in Figure 4, for setting up the 4th embodiment electrical block diagram of filter and switching device to the radio-frequency (RF) transceiver in TDD mobile communication terminal, multiple filters newly-increased in radio-frequency (RF) transceiver in this figure are cascaded, and transmitter in radio-frequency (RF) transceiver and receiver share at least one group of newly-increased filter and switching device.
As shown in Figure 5, for setting up the first embodiment electrical block diagram of filter and switching device to the radio-frequency (RF) transceiver in FDD mobile communication terminal, the transmitter in this figure in radio-frequency (RF) transceiver and receiver share at least one group of filter and switching device that increase newly.
In above-mentioned Fig. 4 and Fig. 5, FL1, FL2, S1, S2, S3, S4 are newly-increased components and parts, FL3 and FL4 is band pass filter, and passband is decided by the working frequency range of terminal, generally equals the bandwidth of working frequency range.FL1, S1 are options, whether meet code requirement determine whether needs according to the transmitting spuriousemission index after power amplifier; The passband of FL1-FL2 should be less than normal working frequency range bandwidth, is specifically decided by the demand of coexisting and terminal fulfillment capability.
As shown in Figure 6, for setting up the second embodiment electrical block diagram of filter and switching device to the radio-frequency (RF) transceiver in FDD mobile communication terminal, multiple filters newly-increased in radio-frequency (RF) transceiver in this figure are cascaded, and transmitter in radio-frequency (RF) transceiver and receiver independently use at least one group of newly-increased filter and switching device.
In above-mentioned Fig. 6, FL1, FL2, FL3, S1, S2, S3, S4, S5 are newly-increased components and parts, FL4 and FL5 is band pass filter, and passband is decided by the working frequency range of terminal, generally equals the bandwidth of working frequency range.FL1, S1 are options, whether meet code requirement determine whether needs according to the transmitting spuriousemission index after power amplifier.If low pass filter, its passband cut-off point should between the minimum and highest frequency of the normal working frequency range of terminal, if FL1-FL3 high pass filter, its passband starting point between the minimum and highest frequency of the normal working frequency range of terminal, specifically should be decided by the demand of coexisting and terminal fulfillment capability.
Based on the above-mentioned improvement to RF transceiver hardware structure in mobile communication terminal, the triggering signal generating apparatus of mobile communication terminal inside can be, but not limited to generate corresponding triggering signal by following mode and send to switching device newly-increased in radio-frequency (RF) transceiver.
Specifically, if LTE communication system takies 2300-2400MHz frequency range, both LTE communication system had been there is when also there is WLAN communication system in indoor, can require that LTE mobile communication terminal is operated in the low-frequency range in 2300-2400MHz frequency range, such as be operated in 2300-2340MHz frequency range, a low pass filter LPF (the passband cut-off point of this LPF is 2340MHz) and switch switcher can be installed additional after the radio-frequency filter of mobile communication terminal inside (passband of this radio-frequency filter is 2300-2400MHz) like this.
As shown in Figure 7, for mobile communication terminal generates the first embodiment processing procedure schematic diagram of corresponding triggering signal, wherein:
A network side signaling (networksignal) can be pre-defined, such as can to utilize in TS36.3316.3.1 chapters and sections defined IE:additionalSpectrumEmission signaling in SIB2, this signaling is configured by network side and base station in indoor LTE communication system issues.
Step 70, be in LTE base station in the overlay area of LTE communication system and WLAN coexistence of communication systems to coexist instruction by carrying system in the system information (as SIB2) of broadcast, to notify the LTE terminal entered in this coexistence of systems overlay area, it has entered the overlay area of LTE communication system and WLAN coexistence of communication systems, mobile communication terminal momentarily or periodically can to judge in the system information (as SIB2) that the serving BS at self current place issues that whether carrying system coexists instruction, if mobile communication terminal is not moved into the overlay area of LTE communication system and WLAN coexistence of communication systems, or shift out the overlay area of LTE communication system and WLAN coexistence of communication systems, coexistence of systems instruction is detected in the system information (as SIB2) then can not broadcasted at self Current Serving BTS, such as NS_08 (only using NS_07 in existing LTE terminal radio frequency standard TS36.101), then perform step 71, if mobile communication terminal is moved into the overlay area of LTE communication system and WLAN coexistence of communication systems, then coexistence of systems instruction detected in the system information (as SIB2) can broadcasted at self Current Serving BTS, as NS_08, then perform step 73,
Step 71, mobile communication terminal generates the triggering signal for triggering switching device unlatching newly-increased in radio-frequency (RF) transceiver and sends to newly-increased switching device;
Step 72, switching device newly-increased in radio-frequency (RF) transceiver is under the triggering of opening triggering signal, open to make the low pass filter increased newly exit normal effective operating state, the radio-frequency (RF) transceiver of such mobile communication terminal just can be operated in full frequency band 2300-2400MHz band limits;
Step 73, mobile communication terminal generates for trigger in radio-frequency (RF) transceiver triggering signal that newly-increased switching device closes and send to newly-increased switching device;
Step 74, switching device newly-increased in radio-frequency (RF) transceiver is under the triggering of closed triggering signal, closed to make the low pass filter increased newly enter normal effective operating state, the radio-frequency (RF) transceiver of such mobile communication terminal just can be operated within the scope of the low-frequency range of the 2300-2340MHz in full frequency band 2300-2400MHz band limits, the passband being equivalent to low pass filter only has the 40MHz of low-frequency range, transition band is 60MHz, the requirement of algorithm can be realized, when minimizing LTE terminal enters the overlay area of LTE communication system and WLAN coexistence of communication systems, the interference that signal in WLAN communication system causes it, improve its communication performance.
As shown in Figure 8, for mobile communication terminal generates the second embodiment processing procedure schematic diagram of corresponding triggering signal, implementation procedure in its implementation procedure and above-mentioned Fig. 7 is roughly similar, wherein there is difference in the determining step in step S70 and the determining step in Fig. 8, determining step in Fig. 8 is specially: the coexistence of systems instruction of whether carrying target (target) the base station notice that mobile communication terminal will be switched in switching command (Handovercommand) message that the serving BS that mobile communication terminal detects current place in handoff procedure sends, if carried, determine that the region that will be switched to is coexistence of systems region, if do not carried, determine that the region that will be switched to is nonsystematic coexisting region.The follow-up implementation of follow-up implementation and Fig. 7 is similar, repeats no more here.
As shown in Figure 9, for mobile communication terminal generates the 3rd embodiment processing procedure schematic diagram of corresponding triggering signal, wherein:
Step 90, mobile communication terminal judges that the letter detected in a continuous print defined amount time of reception window is dry than (SINR, Signalinterferenoiseratio) or channel quality instruction (CQI, ChannelQualityIndicator) whether all lower than the first predetermined threshold value, if, perform step 91, otherwise perform step 93;
Step 91, mobile communication terminal judges that whether the Signal reception performance number of except Serving cell other co-frequency cell (intrafrequencycell) is lower than the second predetermined threshold value, wherein Signal reception performance number includes but not limited to as Reference Signal Received Power (RSRP, ReferenceSignalReceivedPower) value or received signal strength indicator (RSSI, ReceivedSignalStrengthIndicator) value, it is the possibility deriving from intrafrequencycell with exclusive PCR, if, perform step 92, otherwise perform step 93;
Step 92, mobile communication terminal judges that whether the Signal reception performance number (as RSRP value) of alien-frequency district (interfrequencycell) is lower than the 3rd predetermined threshold value, it is the possibility deriving from interfrequencycell with exclusive PCR, if, perform step 94, otherwise perform step 93;
Step 93, mobile communication terminal generates the triggering signal for triggering switching device unlatching newly-increased in radio-frequency (RF) transceiver and sends to newly-increased switching device;
Step 94, switching device newly-increased in radio-frequency (RF) transceiver is under the triggering of opening triggering signal, open to make the low pass filter increased newly exit normal effective operating state, the radio-frequency (RF) transceiver of such mobile communication terminal just can be operated in full frequency band 2300-2400MHz band limits;
Step 95, mobile communication terminal generates for trigger in radio-frequency (RF) transceiver triggering signal that newly-increased switching device closes and send to newly-increased switching device;
Step 96, switching device newly-increased in radio-frequency (RF) transceiver is under the triggering of closed triggering signal, closed to make the low pass filter increased newly enter normal effective operating state, the radio-frequency (RF) transceiver of such mobile communication terminal just can be operated within the scope of the low-frequency range of the 2300-2340MHz in full frequency band 2300-2400MHz band limits, the passband being equivalent to low pass filter only has the 40MHz of low-frequency range, transition band is 60MHz, the requirement of algorithm can be realized, when minimizing LTE terminal enters the overlay area of LTE communication system and WLAN coexistence of communication systems, the interference that signal in WLAN communication system causes it, improve its communication performance.
As shown in Figure 10, for mobile communication terminal generates the 4th embodiment processing procedure schematic diagram of corresponding triggering signal, implementation procedure in its implementation procedure and above-mentioned Fig. 9 is roughly similar, wherein there is difference in the determining step in step S90 and the determining step in Figure 10, determining step in Figure 10 is specially: mobile communication terminal judges the bLock error rate (BLER detected in a continuous print defined amount time of reception window, BlockErrorRatio) whether value is all higher than the 4th predetermined threshold value, if, perform the subsequent step 91 in above-mentioned Fig. 9, otherwise the step 93 performed in above-mentioned Fig. 9, the follow-up implementation of follow-up implementation and above-mentioned Fig. 9 is similar, here repeat no more.
Known by each embodiment of the corresponding triggering signal of above-mentioned generation, when mobile communication terminal determines that interference is when deriving from other communication systems outside, the low band filter equipment installed additional in self radio-frequency (RF) transceiver then and then can be started, the switchgear of mobile communication terminal by installing additional in self radio-frequency (RF) transceiver closed, the low pass filter LPF installed additional in radio-frequency (RF) transceiver is made to start effective work, the passband being equivalent to low pass filter only has the 40MHz of low-frequency range, transition band becomes 60MHz, thus the requirement of algorithm can be realized, and it is identical with the frequency range of indoor base station work, there will not be the problem of dispatching and makeing mistakes, do not need to redefine new frequency range yet.In addition the band limits 2300-2340MHz of the indoor use of above-mentioned LTE is an example, can realize demand etc. because usually determining concrete low-frequency range scope according to the filter that actual traffic needs and mobile communication terminal install additional.
Figure 11 gives the schematic diagram that WLAN communication system and LTE communication system coexist under indoor scene, suppose that the indoor base station of LTE communication system is operated in the band limits of 2300-2340MHz, provide below based on the embodiment 1 of the present invention program's principle, embodiment 2 and embodiment 3.
Embodiment 1:TDD terminal switch
When TDD terminal is switched to indoor base station outdoor, because the wireless access point AP in indoor base station and WLAN communication system is in same geographical coverage area, need the extra radio-frequency (RF) index requirement that coexists, TDD terminal switch to indoor objects community (targetcell) need to notify to coexist demand signaling to TDD terminal configuration in the mobility control information unit (Mobilitycontrolinformationelements) of outdoor current service cell (servingcell) in HandoverCommand, as NS_08 signaling, after the random access request message preventing TDD terminal from initiating to targetcell and access complete, the power of normal data transmission exceeds threshold value (regulation of this threshold value specifically can see the AdditionalSpectrumEmission signaling moiety in TS36.3316.3.4Mobilitycontrolinformationelements), when retrieving this NS_08 signaling in the Mobilitycontrolinformationelements of TDD terminal in the HandoverCommand received, newly-increased switch then in closed Fig. 1 ~ Fig. 4, the low pass filter increased newly is made to start effective work, be equivalent to the radio-frequency filter passband of TDD terminal when moving to indoor and become low-frequency range 40MHz, band limits 60MHz between 2340-2400MHz can be used as the transition band of radio-frequency filter, to meet the filtering requirements needed for LTE communication system and WLAN coexistence of communication systems, and it is identical with the frequency range of indoor base station work or be greater than indoor actual deployment frequency range, there will not be the problem of dispatching and makeing mistakes, when terminal prepares to be switched to outdoor base station, owing to the signaling that coexists not detected in the Mobilitycontrolinformationelements in the HandoverCommand received, as NS_08, then open newly-increased switch, the low pass filter increased newly is not worked, such TDD terminal radio-frequency filter passband when moving to outdoor reverts to 100MHz, can meet normal operating conditions during LTE communication system individualism.
In addition, when terminal prepares to be switched to outdoor base station, owing to the signaling that coexists not detected in the Mobilitycontrolinformationelements in the HandoverCommand received, as NS_08, then open newly-increased switch, the low pass filter increased newly is not worked, and terminal can select the band limits of outdoor current communication system to work on.Such as when terminal switch is to outdoor, the current residing system of terminal is cdma system, then the working frequency range that terminal can be opened shared by cdma system continues communication.
The access of embodiment 2:TDD terminal or cell reselection
When TDD terminal prepares to initiate access request or cell re-selection request to the base station in the LTE communication system of indoor, because the wireless access point AP in indoor base station and WLAN communication system is in same geographical coverage area, need the extra radio-frequency (RF) index requirement that coexists, base station needs to coexist demand signaling to terminal configuration in (as SIB2) in system broadcast information SIB, as NS_08 signaling, after the random access request message preventing terminal from initiating to targetcell and access complete, the power of normal data transmission exceeds threshold value, when TDD terminal retrieves NS_08 signaling in the SIB2 of the system broadcast information of targetcell, newly-increased switch then in closed Fig. 1 ~ Fig. 4, the low pass filter increased newly is made to start effective work, be equivalent to the radio-frequency filter passband of TDD terminal when moving to indoor and become low-frequency range 40MHz, 60MHz between 2340-2400MHz can be used as the transition band of radio-frequency filter, to meet the filtering requirements needed for LTE communication system and WLAN coexistence of communication systems, and it is identical with the frequency range of indoor base station work or be greater than indoor actual deployment frequency range, there will not be the problem of dispatching and makeing mistakes, when terminal prepares to initiate access request or cell re-selection request to the base station LTEBS in the LTE communication system of outdoor, owing to NS_08 signaling not detected in the system information SIB2 of LTEBS broadcast, then open newly-increased switch, the low pass filter increased newly is not worked, such TDD terminal radio-frequency filter passband when moving to outdoor reverts to 100MHz, can meet normal operating conditions during LTE communication system individualism.
In addition, when terminal prepares to be switched to outdoor base station, owing to the signaling that coexists not detected in the Mobilitycontrolinformationelements in the HandoverCommand received, as NS_08, then open newly-increased switch, the low pass filter increased newly is not worked, and terminal can select the band limits of outdoor current communication system to work on.Such as when terminal switch is to outdoor, the current residing system of terminal is cdma system, then the working frequency range that terminal can be opened shared by cdma system continues communication.
Embodiment 3:TDD terminal detects its own signal:
When TDD terminal is moved into the indoor environment by LTE communication system and WLAN coexistence of communication systems, the base station be in due to indoor in the LTE communication system in coexisting region is only operated in the band frequency in this band operation frequency range, during as 2300-2340MHz band limits, if such TDD terminal detects SINR value or CQI value all lower than predetermined threshold value one in continuous print time of reception window, and detect that the RSRP value of Intrafrequencycell is lower than predetermined threshold value two, and detect that the RSRP value of Interfrequencycell is less than predetermined threshold value three, after detection meets above-mentioned three conditions, substantially can judge that the external interference of stronger adjacent frequency self be subject to is the interference (as WLAN communication system) deriving from another communication system, newly-increased switch then in closed Fig. 1 ~ Fig. 4, the low pass filter increased newly is made to start effective work, be equivalent to the radio-frequency filter passband of TDD terminal when moving to indoor and become low-frequency range 40MHz, 60MHz between 2340-2400MHz can be used as the transition band of radio-frequency filter, to meet the filtering requirements needed for LTE communication system and WLAN coexistence of communication systems, and it is identical with the frequency range of indoor base station work, there will not be the problem of dispatching and makeing mistakes, follow-up TDD terminal when moving to outdoor when detecting that the arbitrary condition in above-mentioned three conditions is not met, then open the newly-increased switch in Fig. 1 ~ Fig. 4, the low pass filter increased newly is made to exit effective work, such TDD terminal radio-frequency filter passband when moving to outdoor can revert to 100MHz, can meet normal operating conditions during LTE communication system individualism.
In addition, when terminal prepares to be switched to outdoor base station, owing to the signaling that coexists not detected in the Mobilitycontrolinformationelements in the HandoverCommand received, as NS_08, then open newly-increased switch, the low pass filter increased newly is not worked, and terminal can select the band limits of outdoor current communication system to work on.Such as when terminal switch is to outdoor, the current residing system of terminal is cdma system, then the working frequency range that terminal can be opened shared by cdma system continues communication.
On the basis of above-mentioned Figure 11, suppose that the indoor base station of LTE communication system is operated in the band limits of 2500-2570MHz or 2620-2690MHz, provide the embodiment 4 based on the present invention program's principle and embodiment 5 below.
Embodiment 4:FDD terminal switch
In order to meet the demand that coexists of LTE communication system and WLAN communication system, the indoor base station in LTE communication system is operated in the high 40MHz band limits of 70MHz, is namely operated in the frequency range of 2530-2570MHz or 2650-2690MHz.When FDD terminal is switched to indoor outdoor, because the wireless access point AP in indoor base station and WLAN communication system is in same geographical coverage area, need the extra radio-frequency (RF) index requirement that coexists, terminal switch to targetcell need to notify to coexist demand signaling to FDD terminal configuration in the Mobilitycontrolinformationelements of current servingcell in HandoverCommand, as NS_08 signaling, after the random access request message preventing terminal from initiating to targetcell and access complete, the power of normal data transmission exceeds limit value, when retrieving this NS_08 signaling in the Mobilitycontrolinformationelements of FDD terminal in the HandoverCommand received, newly-increased switch then in closed Fig. 5 ~ Fig. 6, the high pass filter increased newly is made to start effective work, be equivalent to the radio-frequency filter passband of FDD terminal when moving to indoor and become high band 40MHz, 30MHz between 2500 ~ 2530MHz or 2620 ~ 2650MHz can be used as the transition band of radio-frequency filter, to meet the required filtering requirements that coexists, and it is identical with the frequency range of indoor base station work or be greater than indoor actual deployment frequency range, there will not be the problem of dispatching and makeing mistakes, when FDD terminal prepares to be switched to outdoor base station, owing to NS_08 signaling not detected in the Mobilitycontrolinformationelements in the HandoverCommand received, then open newly-increased switch, the high pass filter increased newly is not worked, such FDD terminal radio-frequency filter passband when moving to outdoor reverts to 70MHz, can meet normal operating conditions during LTE communication system individualism.
In addition, when terminal prepares to be switched to outdoor base station, owing to the signaling that coexists not detected in the Mobilitycontrolinformationelements in the HandoverCommand received, as NS_08, then open newly-increased switch, the low pass filter increased newly is not worked, and terminal can select the band limits of outdoor current communication system to work on.Such as when terminal switch is to outdoor, the current residing system of terminal is cdma system, then the working frequency range that terminal can be opened shared by cdma system continues communication.
The access of embodiment 5:FDD terminal or cell reselection
When FDD terminal prepares to initiate access request or cell re-selection request to indoor base station, because the wireless access point AP in indoor base station and WLAN communication system is in same geographical coverage area, need the extra radio-frequency (RF) index requirement that coexists, base station needs in system broadcast information SIB (as in SIB2) to coexist demand signaling to FDD terminal configuration, as NS_08 signaling, after the random access request message preventing terminal from initiating to targetcell and access complete, the power of normal data transmission exceeds threshold value, when FDD terminal detects this NS_08 signaling in SIB2, newly-increased switch then in closed Fig. 5 ~ Fig. 6, the high pass filter increased newly is made to start effective work, be equivalent to the radio-frequency filter passband of FDD terminal when moving to indoor and become high band 40MHz, 30MHz between 2500 ~ 2530MHz or 2620 ~ 2650MHz can be used as the transition band of radio-frequency filter, to meet the filtering requirements needed for LTE communication system and WLAN coexistence of communication systems, and it is identical with the frequency range of indoor base station work or be greater than indoor actual deployment frequency range, there will not be the problem of dispatching and makeing mistakes, when FDD terminal prepares to initiate access request or cell re-selection request to the base station LTEBS in the LTE communication system of outdoor, owing to not receiving NS_08 signaling in the system information SIB2 of LTEBS broadcast, then open newly-increased switch, the high pass filter increased newly is not worked, such FDD terminal radio-frequency filter passband when moving to outdoor reverts to 70MHz, can meet normal operating conditions during LTE communication system individualism.
In addition, when terminal prepares to be switched to outdoor base station, owing to the signaling that coexists not detected in the Mobilitycontrolinformationelements in the HandoverCommand received, as NS_08, then open newly-increased switch, the low pass filter increased newly is not worked, and terminal can select the band limits of outdoor current communication system to work on.Such as when terminal switch is to outdoor, the current residing system of terminal is cdma system, then the working frequency range that terminal can be opened shared by cdma system continues communication.
The above embodiment of the present invention is only be described using LTE communication system and WLAN coexistence of communication systems as special case, certain the present invention program realizes the coexisted environment that principle can also be applied to other any different communication systems, such as 3 G mobile communication network (comprises WCDMA network, CDMA2000 network and TD-SCDMA network) with the coexisting of wlan network, or coexist between different mobile communication system (as take the FDD terminal of 1920-1980MHz band limits and take the TDD terminal coexistence of 1880-1920MHz, or take the TDD terminal of 1880-1920MHz band limits and take the FDD terminal coexistence of 1805-1880MHz band limits, or take the TDD terminal of 2570-2620MHz band limits and take the FDD terminal coexistence etc. of 2620-2690MHz band limits), also the principle of the above-mentioned elaboration of the embodiment of the present invention can be adopted.As shown in figure 12, the schematic diagram of tdd communication system and FDD coexistence of communication systems under indoor scene is given.
Known by introducing in detail of the present invention's each embodiment above-mentioned, new high pass or low pass or band pass filter are installed in the present invention additional in the radio-frequency (RF) transceiver of mobile communication terminal, and control the switching device that high pass or low pass or band pass filter entered or exited normal operating conditions, because the device installed additional is all relative inexpensiveness, therefore the present invention program can be implemented based on low cost, and mobile communication terminal is when being moved into the overlay area that different communication systems coexists, the band limits taken can be reduced in the band limits be originally operated in, do not need to redefine frequency range, therefore frequency spectrum resource occupancy can be improved, the problem that terminal scheduling is made mistakes can also be avoided.In addition the implementation of network side when the network coexisted instruction of instruction mobile communication terminal comprises a lot, this signaling new instruction preferably can be utilized in TS36.101 to represent the requirement command of coexistence of systems, such as NS_08 signaling etc., realize more for convenience, less to the improvement of network system.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (23)
1. a mobile communication terminal, comprises radio-frequency (RF) transceiver, it is characterized in that, increases in described radio-frequency (RF) transceiver:
Filter, for descending the signal within the scope of filtration first designated frequency band in working order, realize described radio-frequency (RF) transceiver and be transformed into signal within the scope of transmitting-receiving first designated frequency band by the signal received and dispatched within the scope of the second designated frequency band, described first designated frequency band scope is within the scope of the second designated frequency band; With
Switching device, for closed under the triggering of corresponding triggering signal, control described filter and enters operating state;
Described mobile communication terminal also comprises:
Triggering signal generating apparatus, for when judging that described mobile communication terminal is under the environment that different system coexists, generates for triggering the closed triggering signal of described switching device and sending to described switching device;
Wherein, described triggering signal generating apparatus is also configured to when judging that described mobile communication terminal is not under the environment that different system coexists, and generates for triggering triggering signal that described switching device opens and sending to described switching device;
Described switching device is also configured to open under the triggering of corresponding triggering signal, controls described filter and to deactivate state;
Described filter realizes the signal within the scope of described radio-frequency (RF) transceiver recovery transmitting-receiving second designated frequency band under the state of deactivating.
2. mobile communication terminal as claimed in claim 1, it is characterized in that, described triggering signal generating apparatus is configured to the coexistence of systems instruction by judging whether to receive network side instruction, under judging whether described mobile communication terminal is in the environment that different system coexists.
3. mobile communication terminal as claimed in claim 2, it is characterized in that, described triggering signal generating apparatus is configured to coexist instruction by detecting whether carrying system in the system information of mobile communication terminal current place serving base station broadcast, judges whether the coexistence of systems instruction receiving network side instruction.
4. mobile communication terminal as claimed in claim 2, it is characterized in that, described triggering signal generating apparatus is configured to by detecting mobile communication terminal in handoff procedure, whether carry the coexistence of systems instruction that the target BS that will be switched to informs Current Serving BTS in the switching command message that Current Serving BTS issues, judge whether the coexistence of systems instruction receiving network side instruction.
5. mobile communication terminal as claimed in claim 1, it is characterized in that, described triggering signal generating apparatus is configured to judge whether in a defined amount time window, detect that channel quality indicated value or Signal to Interference plus Noise Ratio value are all lower than the first predetermined threshold, and detect that other common-frequency cell signal received power value is lower than the second predetermined threshold except Serving cell, and detect that alien-frequency district Signal reception performance number is lower than the 3rd setting threshold value, if under then determining that described mobile communication terminal is in the environment that different system coexists, under then determining that described mobile communication terminal is not in the environment that different system coexists if not.
6. mobile communication terminal as claimed in claim 1, it is characterized in that, described triggering signal generating apparatus is configured to judge whether in a defined amount time window, bLock error rate value to be detected all higher than the 4th predetermined threshold, and detect that other common-frequency cell signal received power value is lower than the second predetermined threshold except Serving cell, and detect that alien-frequency district Signal reception performance number is lower than the 3rd setting threshold value, if under then determining that described mobile communication terminal is in the environment that different system coexists, under then determining that described mobile communication terminal is not in the environment that different system coexists if not.
7. mobile communication terminal as claimed in claim 1, it is characterized in that, the transmitter in described radio-frequency (RF) transceiver and receiver share filter described at least one group and switching device.
8. mobile communication terminal as claimed in claim 1, it is characterized in that, the receiver in described radio-frequency (RF) transceiver uses filter described at least one group and switching device.
9. mobile communication terminal as claimed in claim 8, is characterized in that, filter and switching device described in other at least one group of transmitter use in described radio-frequency (RF) transceiver.
10. the mobile communication terminal as described in 1 ~ 9 arbitrary claim, is characterized in that, described mobile communication terminal is time division duplex mobile communication terminal, or is Frequency Division Duplexing (FDD) mobile communication terminal.
11. 1 kinds of methods realizing different communication systems and coexist, is characterized in that, comprising:
Mobile communication terminal, when judging self to be under the environment that different system coexists, generates for triggering the closed triggering signal of the switching device that increases in self radio-frequency (RF) transceiver and sending to described switching device;
Described switching device is closed under the triggering of closed triggering signal, and the filter controlling to increase in described radio-frequency (RF) transceiver enters operating state;
Described filter descends the signal within the scope of filtration first designated frequency band in working order, realize described radio-frequency (RF) transceiver and be transformed into signal within the scope of transmitting-receiving first designated frequency band by the signal received and dispatched within the scope of the second designated frequency band, described first designated frequency band scope is within the scope of the second designated frequency band;
Described method also comprises:
Mobile communication terminal, when judging self not to be under the environment that different system coexists, generates for triggering triggering signal that described switching device opens and sending to described switching device;
Described switching device is opened under the triggering of opening triggering signal, controls described filter and to deactivate state;
Described filter realizes the signal within the scope of described radio-frequency (RF) transceiver recovery transmitting-receiving second designated frequency band under the state of deactivating.
12. methods as claimed in claim 11, is characterized in that, mobile communication terminal comprises under judging self whether to be in the environment that different system coexists:
Mobile communication terminal when receiving the coexistence of systems instruction of network side instruction, under determining self to be in the environment that different system coexists; And
When not receiving the coexistence of systems instruction of network side instruction, under determining self not to be in the environment that different system coexists.
13. methods as claimed in claim 12, is characterized in that, described mobile communication terminal to coexist instruction by detecting whether carrying system in the system information of current place serving base station broadcast, judges whether the coexistence of systems instruction receiving network side instruction.
14. methods as claimed in claim 12, it is characterized in that, described mobile communication terminal is by handoff procedure, whether carry the coexistence of systems instruction that the target BS that will be switched to informs Current Serving BTS in the switching command message that detection Current Serving BTS issues, judge whether the coexistence of systems instruction receiving network side instruction.
15. methods as claimed in claim 11, is characterized in that, mobile communication terminal comprises under judging self whether to be in the environment that different system coexists:
Described mobile communication terminal judges whether to detect in a defined amount time window lower than the first predetermined threshold, channel quality indicated value or Signal to Interference plus Noise Ratio value all to detect except Serving cell lower than the second predetermined threshold, other common-frequency cell signal received power value detects that alien-frequency district Signal reception performance number is lower than the 3rd setting threshold value, if under then determining self to be in the environment that different system coexists; Otherwise
Under determining self not to be in the environment that different system coexists.
16. methods as claimed in claim 11, is characterized in that, mobile communication terminal comprises under judging self whether to be in the environment that different system coexists:
Described mobile communication terminal judges whether to detect in a defined amount time window higher than the first predetermined threshold, bLock error rate value value all to detect except Serving cell lower than the second predetermined threshold, other common-frequency cell signal received power value detects that alien-frequency district Signal reception performance number is lower than the 3rd setting threshold value, if under then determining self to be in the environment that different system coexists; Otherwise
Under determining self not to be in the environment that different system coexists.
17. methods as claimed in claim 11, is characterized in that, described different communication systems coexists and comprises mobile communication system and wireless lan communication system coexists.
18. methods as claimed in claim 17, it is characterized in that, described mobile communication system take described second designated frequency band scope and the band limits taken lower than the band limits shared by wireless lan communication system, then described first designated frequency band scope is within the scope of the low-frequency range of the second designated frequency band scope;
Described mobile communication system take described second designated frequency band scope and the band limits taken higher than the band limits shared by wireless lan communication system, then described first designated frequency band scope is in the high band range of the second designated frequency band scope.
19. methods as claimed in claim 11, is characterized in that, described different communication systems coexists and comprises the first mobile communication system and the second mobile communication system coexists.
20. methods as claimed in claim 19, it is characterized in that, described first mobile communication system take described second designated frequency band scope and the band limits taken lower than the band limits shared by the second mobile communication system, then described first designated frequency band scope is within the scope of the low-frequency range of the second designated frequency band scope;
Described first mobile communication system take described second designated frequency band scope and the band limits taken higher than the band limits shared by the second mobile communication system, then described first designated frequency band scope is in the high band range of the second designated frequency band scope.
21. 1 kinds of systems coexisted by different communication systems, is characterized in that, comprise and are in base station in the common overlay area of described different communication systems and mobile communication terminal, wherein:
Described base station, for the instruction that coexists to described mobile communication terminal indication mechanism;
Described mobile communication terminal, for when receiving the coexistence of systems instruction of described base station instruction, generate for triggering the closed triggering signal of the switching device that increases in self radio-frequency (RF) transceiver and sending to described switching device, described switching device is closed under the triggering of corresponding triggering signal, and the filter controlling to increase in described radio-frequency (RF) transceiver enters operating state; Described filter descends the signal within the scope of filtration first designated frequency band in working order, realize described radio-frequency (RF) transceiver and be transformed into signal within the scope of transmitting-receiving first designated frequency band by the signal received and dispatched within the scope of the second designated frequency band, described first designated frequency band scope is within the scope of the second designated frequency band;
Wherein, described mobile communication terminal is also configured to, when not receiving the coexistence of systems instruction of described base station instruction, generate the triggering signal for triggering the unlatching of described switching device and send to described switching device; Described switching device is opened under the triggering of opening triggering signal, controls described filter and to deactivate state; Described filter realizes the signal within the scope of described radio-frequency (RF) transceiver recovery transmitting-receiving second designated frequency band under the state of deactivating.
22. systems as claimed in claim 21, it is characterized in that, described base station is the Current Serving BTS of described mobile communication terminal, and described base station is carried described coexistence of systems instruction and to be coexisted instruction to described mobile communication terminal indication mechanism in the system information of broadcast.
23. systems as claimed in claim 21, it is characterized in that, described base station is the Current Serving BTS of described mobile communication terminal in handoff procedure, and the coexistence of systems instruction of carrying the target BS notice that described mobile communication terminal will be switched in the switching command message issued of described base station to coexist instruction to described mobile communication terminal indication mechanism.
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| CN104185187B (en) * | 2013-05-27 | 2017-12-22 | 华为终端有限公司 | The control method and terminal device that a kind of LTE and WiFi coexists |
| CN104244259B (en) * | 2013-06-07 | 2018-08-21 | 中国移动通信集团公司 | A kind of method and system and mobile terminal of the mutual interference solving terminal inner |
| CN105101342B (en) * | 2014-05-21 | 2019-05-21 | 中兴通讯股份有限公司 | A kind of method, base station and terminal that different communication terminal is accessed to same cell |
| CN105376818B (en) * | 2014-08-29 | 2018-09-11 | 展讯通信（上海）有限公司 | The method and mobile terminal of various wireless communication technology co-existence in mobile terminal |
| JP2017118338A (en) * | 2015-12-24 | 2017-06-29 | 株式会社村田製作所 | Power amplification module |
| JP2019110352A (en) | 2016-04-21 | 2019-07-04 | 株式会社Ｎｔｔドコモ | User device |
| DE102016225226B4 (en) * | 2016-12-16 | 2022-03-24 | Volkswagen Aktiengesellschaft | Method, device and computer program for a mobile device for reducing interference between a first mobile communication system and a second mobile communication system |
| CN112838878A (en) * | 2019-11-01 | 2021-05-25 | 深圳市万普拉斯科技有限公司 | Radio frequency system, radio frequency front end and mobile terminal |
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