CN105594296A - Mobile terminal and antenna switching method thereof - Google Patents
Mobile terminal and antenna switching method thereof Download PDFInfo
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- CN105594296A CN105594296A CN201380079445.7A CN201380079445A CN105594296A CN 105594296 A CN105594296 A CN 105594296A CN 201380079445 A CN201380079445 A CN 201380079445A CN 105594296 A CN105594296 A CN 105594296A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0802—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection
- H04B7/0825—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with main and with auxiliary or diversity antennas
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0802—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection
- H04B7/0817—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with multiple receivers and antenna path selection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
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Abstract
A mobile terminal and an antenna switching method thereof. The mobile terminal supports simultaneous standby of a first communication mode and a second communication mode. The antenna switching method comprises: when the first communication mode is in a connected state and the second communication mode in an idle state, starting timing from start time of a downlink data reception interval in the second communication mode, and when the downlink data reception interval in the second communication mode expires, switching a diversity reception antenna from the first communication mode to the second communication mode, so as to receive downlink data in the second communication mode; and when downlink data reception duration in the second communication mode expires, switching the diversity reception antenna from the second communication mode to the first communication mode. The mobile terminal and the antenna switching method thereof can decrease the volume of a mobile terminal and reduce cost.
Description
The present invention relates to mobile communication technology, more particularly to a kind of mobile terminal and its method for antenna switching for mobile terminal and its antenna switching method technical field.Background technology Long Term Evolution（LTE, Long Term Evolution) be international mainstream new generation broadband wireless mobile communication technology.Packet switch is intended for based on LTE（PS, Packet Switched) domain optimization system design goal, the LTE network architecture no longer discrimination circuit exchanges（CS, Circuit Switched) domain and ps domain, using unified ps domain framework.Under new LTE system framework, traditional CS domains voice solution is no longer supported, the VoIP business of IMS controls will be used as the voice solution in following LTE network.
Because the performance indications of current VoIP business fail to reach the quality of existing CS domains speech business, and the whole network is needed to dispose IP IP multimedia subsystem, IMSs（IMS, IP Multimedia Subsystem), the deployment of LTE network and IMS network is individual process progressively.Therefore on the basis of existing network, three kinds of different voice solutions are formd：Based on double standby terminal scheme, circuit domain dropping（CSFB, Circuit Switched FallBack) and voice based on LTE system（ VoLTE, Voice over LTE ).CSFB and VoLTE are the LTE voice solutions that 3GPP is defined.In the current generation, double standby terminal scheme is a kind of relatively common mode.Double standby terminal can be simultaneously standby in LTE network and 2G/3G networks, and can receive and send simultaneously signal from LTE and 2G/3G networks, and the essence of its voice solution is to use traditional 2G/3G networks, unrelated with LTE.In current double-standby mobile terminal, due to needing to support communication, it is therefore desirable to which many antennas, this double-standby mobile terminal has the problem of volume is big, cost is high, design difficulty is big, because：
Due to needing to receive LTE system signal and 2G/3G system signals simultaneously, existing mobile terminal at least needs to configure 3 antennas, wherein needing to configure 2 antennas for LTE system, for 1 antenna of 2G/3G system configurations.That is, relative to single-standby mobile terminal, possessing the mobile terminal of double standby ability needs to increase extra antenna, radio frequency chip, wave filter even baseband chip etc., and also bring bigger research and development difficulty, and longer R＆D cycle simultaneously.Content of the invention embodiment of the present invention technical problem to be solved is how to reduce size of mobile terminals, reduces mobile terminal cost.To solve the above problems, the embodiments of the invention provide a kind of mobile terminal antenna switching method, the mobile terminal supports that the first communication pattern and the second communication pattern are simultaneously standby, and the antenna switching method includes：When first communication pattern is in connection status, when second communication pattern is in idle condition, the timing since the downlink data of second communication pattern receives the initial time at interval, when the downlink data of second communication pattern, which receives interval time, to be reached, diversity reception antenna is switched into the second communication pattern from the first communication pattern, for the reception of the second communication pattern downlink data；When the downlink data received duration of second communication pattern is reached, the diversity reception antenna is switched into the first communication pattern from the second communication pattern.Optionally, the type of the downlink data of second communication pattern includes at least two.Optionally, the downlink data is the measurement data or paging message data of the second communication pattern cell.Optionally, when the downlink data is the measurement data of the second communication pattern cell, the downlink data reception interval time of second communication pattern is determined that the downlink data received duration of second communication pattern is determined by the reception time of the cell measurement data by the cell measurement time of the second communication pattern cell；
When the downlink data is the paging message data of the second communication pattern cell, the downlink data reception interval time of second communication pattern is determined that the downlink data received duration of second communication pattern is determined by the beep-page message reception time of the cell by the paging cycle of the second communication pattern cell.Optionally, first communication pattern is LTE communication pattern, and second communication pattern is 2G/3G communication patterns.Optionally, the antenna switching method also includes：When receiving the antenna switching command from the mobile terminal upper strata, LTE physical layers change the antenna measurement configuration of descending CPR measurements；LTE physical layers carry out descending CPR measurements under antenna measurement configuration, and generation reports the measurement result of network side；After the renewal configuration information from network side for the measurement result is received, LTE physical layers, which update, receives configuration, to adapt to the data-transmission mode of single antenna reception；LTE physical layers receive the signal from network side using the reception configuration of the renewal；The mobile terminal upper strata controls the switching of the mobile terminal diversity reception antenna links scenarios in the case where the LTE physical layers update and receive configuration.Optionally, the switching of the control mobile terminal diversity reception antenna links scenarios, including：Control the signal for interrupting diversity reception antenna under LTE communication pattern to receive, the diversity reception antenna is switched to 2G/3G communication patterns.Optionally, the antenna measurement configuration of the descending CPR measurements of the modification includes：The antenna measurement that descending CPR is measured is configured is adjusted to 2TX/1RX or 1TX/1RX by 4TX/1RX or 2TX/1RX or 1TX/1RX.Optionally, the descending CPR measurements of progress include：The pilot signal of primary antenna is only received, the broadband and subband PMI and CQI when progress RI is 1 and antenna measurement is configured to 4TX/1RX or 2TX/1RX or 1TX/1RX are measured.Optionally, it is described measurement result is reported into network side to include：If CPR is given the correct time in periodicity, by CPR measurement result by PUCCH channel report networks side.Optionally, it is described measurement result is reported into network side to include：If in aperiodicity
Report, after the DCI instructions of network side PDCCH channels carrying are received, according to DCI instructions by after CPR measurement result and Traffic Channel group bag by PUSCH channel report networks side.Optionally, the renewal receives configuration and included：By decoding the DCI information of PDCCH channels, renewal configuration information of the network side to PDSCH is obtained, ^ is received according to the renewal configuration information update and configured；To adapt to the PDSCH transmission pattern of single antenna reception.Optionally, the mobile terminal upper strata sends the antenna switching command when 2G/3G communication pattern idle conditions have issued circuit domain calling service；After the switching of the mobile terminal diversity reception antenna links scenarios is controlled, the diversity reception antenna after the switching is utilized to initiate circuit domain calling service in circuit domain communication network.Optionally, received during being received under 2G/3G communication pattern idle conditions after the beep-page message of 2G/3G cells, the mobile terminal upper unit sends antenna switching command to the LTE physical layers；After the switching of the mobile terminal diversity reception antenna links scenarios is controlled, in 2G/3G cell response circuits domain called service.When needing 2G/3G location area updatings, the mobile terminal upper strata sends antenna switching command to the LTE physical layers；After the switching of the mobile terminal diversity reception antenna links scenarios is controlled, in 2G/3G cell launch positions area more new business.To solve the above problems, the embodiment of the present invention additionally provides a kind of mobile terminal, the mobile terminal supports that the first communication pattern and the second communication pattern are simultaneously standby, it is characterised in that the mobile terminal includes：Timing unit, the first switch unit and the second switch unit, wherein：The timing unit, for the mobile terminal connection status is in first communication pattern, when second communication pattern is in idle condition, the timing since the downlink data of second communication pattern receives the initial time at interval, and when the downlink data of second communication pattern receives interval time and reached, trigger first switch unit；Since being received the downlink data of second communication pattern, when the downlink data received duration of second communication pattern is reached, the second switch unit is triggered；
First switch unit, for diversity reception antenna to be switched into the second communication pattern from the first communication pattern, for the reception of the second communication pattern downlink data；Second switch unit, for diversity reception antenna to be switched into the first communication pattern from the second communication pattern.Optionally, the type of the downlink data of second communication pattern includes at least two.Optionally, the downlink data is the measurement data or paging message data of the second communication pattern cell.Optionally, first communication pattern is LTE communication pattern, and second communication pattern is 2G/3G communication patterns.Optionally, the mobile terminal includes：Terminal upper unit, LTE physical layer elements and antenna switching unit, wherein：The LTE physical layer elements, for when receiving the antenna switching command for carrying out self terminal upper unit, the antenna measurement configuration of descending CPR measuring units is changed, the descending CPR measurement results produced under antenna measurement configuration are reported into network side；After the renewal configuration information from network side is received, update and receive configuration；The terminal upper unit, in the case of updating in the LTE physical layers and receiving configuration, control antenna switching unit carries out the switching of terminal antenna connected mode.Optionally, the LTE physical layer elements include：The descending CPR measuring units of LTE physical layers control unit, LTE and LTE physical layer receiving units, wherein：The LTE physical layers control unit, for when receiving the antenna switching command for carrying out self terminal upper unit, the antenna measurement of the modification descending CPR measuring units of LTE to be configured；After the renewal configuration information from network side is received, control the LTE physical layers receiving unit to update and receive configuration；The descending CPR measuring units of LTE, for carrying out descending CPR measurements under antenna measurement configuration, generation reports the measurement result of network side；
The LTE physical layers receiving unit, the signal from network side is received for the reception configuration according to the renewal.It can be seen that, when the mobile terminal in first communication pattern in connection status, when second communication pattern is in idle condition, the timing since the downlink data of second communication pattern receives the initial time at interval, interval time and downlink data received duration are received by the downlink data for monitoring the second communication pattern, and when the downlink data of second communication pattern receives interval time arrival, diversity reception antenna is switched into the second communication pattern from the first communication pattern, for the reception of the second communication pattern downlink data；When the downlink data received duration of second communication pattern is reached, the diversity reception antenna is switched into the first communication pattern from the second communication pattern, so as to realize that the first communication pattern and the second communication pattern share an antenna, therefore the quantity of antenna can be reduced, so as to save cost, simultaneously the placement-and-routing of mobile terminal circuit plate is easier, so as to reduce design difficulty, shortens the R＆D cycle.Further, when occurring antenna switching, by changing the configuration of mobile terminal, and by being interacted with network side, the change of data transfer mode is realized, it can be ensured that mobile communication business is smoothed out.Brief description of the drawings Fig. 1 is the flow chart of mobile terminal antenna switching method in the embodiment of the present invention；Fig. 2 is the flow chart of mobile terminal antenna switching method in the embodiment of the present invention；Fig. 3 is that mobile terminal is in PS connection status in the embodiment of the present invention, and GSM when GSM is in idle condition receives time interval schematic diagram；Fig. 4 is the flow chart of mobile terminal antenna switching method in the embodiment of the present invention；When Fig. 5 is that mobile terminal is in the PS connection status of LTE communication pattern in the embodiment of the present invention, the flow chart of antenna switching method during the CS calling services of 2G/3G communication patterns is initiated；Fig. 6 is PS connection shape of the mobile terminal in LTE communication pattern in the embodiment of the present invention
During state, the flow chart of antenna switching method when realizing the circuit domain called service of 2G/3G communication patterns；When Fig. 7 is that mobile terminal is in the PS connection status of LTE communication pattern in the embodiment of the present invention, the flow chart of antenna switching method when realizing the location area updating of 2G/3G communication patterns；Fig. 8 is the structural representation of mobile terminal in the embodiment of the present invention；Fig. 9 is the structural representation of mobile terminal in the embodiment of the present invention；Figure 10 is the structural representation of mobile terminal in the embodiment of the present invention.In the embodiment embodiment of the present invention, for with the simultaneously standby mobile terminal of plurality of communication schemes, to solve the problem of its size of mobile terminals is big, cost is high, design difficulty is big, by the way of different communication modes common antenna, mobile terminal antenna quantity is reduced.Also, make further monitoring to communication network, so that common antenna to be switched to different communication patterns in the suitable time.It is understandable to enable the above-mentioned purpose of the embodiment of the present invention, feature and advantage to become apparent, the specific embodiment of the present invention is described in detail below in conjunction with the accompanying drawings.In the embodiment of the present invention, the mobile terminal supports that the first communication pattern and the second communication pattern are simultaneously standby, and first communication pattern and the second communication pattern share diversity reception antenna.The flow chart of mobile terminal antenna switching method in the embodiment of the present invention shown in reference picture 1, when first communication pattern is in connection status, when second communication pattern is in idle condition, the mobile terminal antenna switching method may comprise steps of：
S 101, the timing since the downlink data of second communication pattern receives the initial time at interval, when the downlink data of second communication pattern, which receives interval time, to be reached, diversity reception antenna is switched into the second communication pattern from the first communication pattern, for the reception of the second communication pattern downlink data.S102, since being received the downlink data of second communication pattern, when described the
When the downlink data received duration of two communication patterns is reached, the diversity reception antenna is switched into the first communication pattern from the second communication pattern.Using above scheme, the mobile terminal is in connection status in first communication pattern, and the second mode be in idle condition when, interval time is received by the reception duration and downlink data that obtain the second communication pattern downlink data, and when receiving interval time arrival, diversity reception antenna for the first communication pattern is switched into the second communication pattern, reception for the second communication pattern downlink data, when downlink data received duration is reached, again the first communication pattern is switched back into from the second communication pattern, the mobile terminal can be achieved and is in connection status in first communication pattern, when second communication pattern is in idle condition, two kinds of communication patterns are supported using a diversity reception antenna, therefore antenna amount can be reduced, and then size of mobile terminals can be reduced, it is cost-effective, shorten the R＆D cycle.In specific implementation, it can determine that downlink data receives the initial time at interval during the second communication pattern idle condition according to the configuration of the agreement and the second communication pattern cell of the second communication pattern, and can constantly be adjusted according to synchronizing information.Downlink data receives the reception interval time that interval time is downlink data, and received duration is the received duration of downlink data.In specific implementation, the type of the downlink data of second communication pattern can have a variety of, for example, can be the measurement data of the second communication pattern cell, or the paging message data of the second communication pattern cell.When the downlink data is the measurement data of the second communication pattern cell, the downlink data reception interval time of second communication pattern is determined that the downlink data received duration of second communication pattern is determined by the reception time of the cell measurement data by the cell measurement time of the second communication pattern cell.When the downlink data is the paging message data of the second communication pattern cell, the downlink data reception interval time of second communication pattern is determined that the downlink data received duration of second communication pattern is determined by the beep-page message reception time of the cell by the paging cycle of the second communication pattern cell.Wherein, first communication pattern can be 4G communication patterns, such as LTE communication pattern,
Including but not limited to FDD-LTE, TDD-LTE etc..Second communication pattern can be 2G/3G communication patterns, including but not limited to GSM, WCDMA, CDMA2000 and TD-SCDMA etc..As one kind citing, in current CCSA（CCSA in double standby terminal specification), the first communication pattern and the second communication pattern specifically include following several：TD-LTE/TD-SCDMA/GSM (GPRS) the multimode bilateral terminal type 1 defined for CCSA, the first communication pattern refers to TD-LTE communication patterns, and the second communication pattern refers to TD-SCDMA/GSM (GPRS) pattern；TD-LTE/TD-SCDMA/GSM (GPRS) the multimode bilateral terminal type 2 defined for CCSA, the first communication pattern refers to TD-LTE/TD-SCDMA communication patterns, and the second communication pattern refers to GSM (GPRS) pattern；TD-LTE/LTE FDD/TD-SCDMA/WCDMA/ GSM (GPRS) the multimode bilaterals terminal type 1 defined for CCSA, first communication pattern refers to TD-LTE/LTE-FDD communication patterns, and the second communication pattern 2 refers to TD-SCDMA/GSM (GPRS)/WCDMA mode；TD-LTE/LTE FDD/TD-SCDMA/WCDMA/ GSM (GPRS) the multimode bilaterals terminal type 2 defined for CCSA, first communication pattern refers to TD-LTE/LTE-FDD/TD-SCDMA communication patterns, and the second communication pattern refers to GSM (GPRS)/WCDMA mode.The flow chart of mobile terminal antenna switching method in the embodiment of the present invention shown in reference picture 2, here in the first mode of communication be LTE communication pattern, the second communication pattern be gsm communication pattern exemplified by illustrate.Mobile terminal is in LTE communication pattern PS connection status, and during gsm communication pattern idle condition, GSM network is monitored, to receive GSM cell measurement message and beep-page message.Because LTE is received using two antennas：A piece primary antenna and a diversity antenna, the data without unnecessary antenna for gsm communication pattern are monitored, to solve this problem,
At regular intervals, diversity reception antenna is comprised the following steps that from LTE communication pattern switching to gsm communication pattern：
5201, mobile terminal is in PS connection status in LTE communication pattern, when gsm communication pattern is in idle condition, obtains the downlink data timing receipt initial time T under the gsm communication patternstart, receive interval time and received duration Treceive.In specific implementation, the downlink data can have in polytype, the present embodiment, and for ease of description, different types of message is grouped.Such as one group is measurement message, and another group is paging message data.Its corresponding timing receipt initial time T can be obtained for each group of downlink datastart, receive interval time Τ ^^ and received duration Trcceive, for convenience of description, here with timing receipt initial time Tstart[n], receives interval time
With received duration Treceive[n] is represented, wherein, n is integer, and η=0 ~ Ν -1, N is the group number that GSM cell downlink data is received, and wherein n=0 represents measurement data, and n=l represents paging message data.Mobile terminal as shown in Figure 3 is in PS connection status, and GSM when GSM is in idle condition receives time interval schematic diagram.For the measurement data and paging message data of the downlink data of gsm communication pattern, including cell.For measurement data, Tinterval[0] BCCH is represented（Broadcast Control Channel, BCCH) BCCH initially receives, received signal strength（Received Signal Strength Indicator, RSSI) measurement, initial base station identification code（Base Station Identification Code, BSIC) differentiate, BSIC confirm again concurrent data group receive interval time, in the present embodiment,
By taking the GSM cell of common configuration as an example, BCCH is initially received, rssi measurement, initial BSIC differentiate, BSIC confirms concurrent data group received duration T againreeeive[0]=6ms.For the reception of paging message data, because the systematic survey information by cell can accurately determine the GSM cell paging group residing for mobile terminal and the CCCH with paging group（CCCH the position where) in multi-frame, minimum periods of GSM pagings is 2 multi-frames, i.e. 2x51 frames=471ms, therefore can be by accurate timing, using 471ms as the cycle, and each reception time is received for 6ms scheme, i.e.,
Treceive[l]=6ms。
5202, receive the initial time T at interval from the downlink data of gsm communication patternstartOpen
Beginning timing, when the downlink data of the gsm communication pattern, which receives interval time Tinted, to be reached, by diversity reception antenna from LTE communication pattern switching to gsm communication pattern, for the reception of gsm communication pattern downlink data.In specific implementation, interval time is received for downlink data, timing unit can be set to carry out timing.For example, receiving time interval for measurement data, first timer is set, when first timer timing length reaches Tinterval[0]=240ms when, by the diversity reception antenna of LTE communication pattern switch to gsm communication pattern be used as measurement data reception.Second timer is set, when second timer timing length reaches Tint^^l] when, the diversity reception antenna of LTE communication pattern is switched into the reception that gsm communication pattern makees downlink page message data.S203, since being received the downlink data of the gsm communication pattern, when described
The downlink data received duration T of gsm communication patternreceivtWhen ^j reaches, by the diversity reception antenna from gsm communication pattern switching to LTE communication pattern.In specific implementation, for downlink data received duration, timing unit can be equally set to carry out timing, for example, the 3rd timer is set, when the 3rd timer timing length reaches Treceive[0], the reception diversity reception antenna that gsm communication pattern is used as descending measurement data is switched into LTE communication pattern.4th timer is set, when the 4th timer timing length reaches Trceeive[l], the diversity reception antenna that gsm communication pattern is used as to the reception of downlink page message data switches to LTE communication pattern.Using above scheme, continue 6ms because GSM is received, and LTE physical layers hybrid automatic repeat-request (Hybrid Automatic Repeat Request, HARQ) time interval retransmitted is at least 5ms, therefore at most 6 HARQ procedures are involved within the GSM reception times, and each HARQ procedure can be only missed once due to antenna switch reasons, treat that LTE antenna can receive HARQ and retransmit data after recovering, merge decoding, although therefore all in all antenna switching can cause the physical layer bit error rate to rise, but due to there is HARQ retransmission mechanism, therefore rrc layer Shuo Ju Bao Lost mistake rates are not resulted in significantly to rise.When LTE communication pattern is time division duplex LTE (TDD-LTE) communication pattern, if GSM downlink reception falls the sub-frame of uplink in LTE just, LTE system would not be produced
Raw influence.During the sub-frame of uplink of the LTE, diversity reception antenna can be used for the measurement of GSM cell, can receive BSIC, simply cannot receive broadcast channel（Broadcast Channel, BCH) and PCH（Paging Indicator Channel, PCH) data, to solve this problem, mobile terminal can only use the blunt small time slots of ^（GAP), it is 6ms such as GSM communication patterns, for receiving BCH and PCH data, mainly PCH.Analyzed more than, for gsm communication pattern, it is necessary to be received when being spaced 240ms and 471ms using the 6ms times, caused LTE physical layer Block Error Rates rise to：（ 6+6 ) / ( 240+471 ) =1.6%.Therefore to LTE service impact very littles, but the use of antenna can be reduced, it is cost-effective, while reducing mobile terminal design difficulty, shorten the R＆D cycle.It is understood that in specific implementation, the initial time at interval being received for every group of downlink data, can constantly be adjusted according to synchronization message, to updating T after the downlink reception data synchronization processing of the second communication patternstart[n], T^r n] and Treceive[n], timing can be restarted to each timer, connection status is in the first communication pattern of the mobile terminal, when second communication pattern is in idle condition, according to the cell measurement and paging cycle of the second communication pattern, the diversity reception antenna is periodically switched into the second communication pattern, to monitor the service condition of second communication pattern, and corresponding operation is taken.In specific implementation, when first communication pattern is in connection status, if the second communication pattern has business, for example, second communication pattern has caller or called service, or second communication pattern cell have location updating, the diversity reception antenna from the first communication pattern can also be switched to the second communication pattern.Still in the first mode of communication be LTE communication pattern, the second communication pattern be 2G/3G communication patterns exemplified by be described in detail：It has been investigated that, when the reception of LTE communication pattern is changed into 1 antenna from 2 antennas, following influence can be produced on communication quality：For Physical Downlink Control Channel (Physical Downlink Control Channel,
PDCCH), for the control channel such as Physical Control Format Indicator Channel (Physical Control Format Indicator Channel, PCFICH), when occurring GSM CS business,
Mobile terminal physical layer can adjust the reception of control channel according to system command, because control channel uses transmitting diversity, reception antenna is changed into after one, and antenna reception scheme is changed into 2TX/1RX from 2TX/2RX, diversity gain is simply received without signal to noise ratio（Signal Noise Ratio, SNR) 3 ~ 5db decline is had according to multi-path environment.For Physical Downlink Shared Channel (Physical Downlink Shared Channel,
PDSCH) multiple-input, multiple-output（Multiple Input Multiple Output, MIMO) transmission, received from 2 antennas and be changed into causing two transmission blocks of PDSCH channels after 1 antenna is received（Transport Block, TB) disturb each other, there are a large amount of error codes；For other PDSCH transmission mode, reception antenna is changed into after 1 without diversity gain from 2, and SNR has 3 ~ 5db decline according to multi-path environment, because LTE base station still keeps original encoding modulator approach, therefore error code also occurs.For above-mentioned transmission quality problem, the embodiment of the present invention proposes a kind of new processing mode.Specifically, when LTE communication pattern is in PS connection status, mobile terminal initiates 2G/3G CS calling services if necessary to parallel, when responding CS called services or doing CS domains location area updating, by certain processing procedure, so that the PDSCH channels of LTE systems are the transmission mode under adaptation single antenna reception by the transmission mode Dispatching adjustment under reception diversity or mimo channel by LTE network side, mobile terminal stops using diversity reception antenna under LTE communication pattern afterwards, it is switched to 2G/3G communication patterns completely and is used as receipts, send out antenna.The flow chart of mobile terminal antenna switching method shown in reference picture 4, here mobile terminal realize the switching for the diversity reception antenna that LTE communication pattern is shared with 2G/3G communication patterns, comprise the following steps that by being interacted with network side：
5401, when receiving the antenna switching command from the mobile terminal upper strata, LTE physical layers change the antenna measurement configuration of descending CPR measurements.
5402, LTE physical layers carry out descending CPR measurements under antenna measurement configuration, and generation reports the measurement result of network side.
5403, after the renewal configuration information from network side for the measurement result is received, LTE physical layers, which update, receives configuration, to adapt to the data-transmission mode of single antenna reception.
S404, LTE physical layer receive the signal from network side using the reception configuration of the renewal.
S405, the mobile terminal upper strata controls the switching of the mobile terminal diversity reception antenna links scenarios in the case where the LTE physical layers update and receive configuration.Due to when carrying out the switching of diversity reception antenna, the mobile terminal is interacted with LTE networks in time so that LTE network sides upgrade in time configuration information, adapts to the data-transmission mode of single antenna reception, therefore error code can be reduced, strengthens service transmission performance.In an embodiment of the present invention, mobile terminal LTE communication pattern uses two antennas：First antenna（Primary antenna）With the second antenna（Diversity reception antenna）, 2G/3G communication patterns and the LTE communication pattern are shared the second antenna, illustrated below by way of several specific business scenarios：Reference picture 5, when mobile terminal is in the PS connection status of LTE communication pattern, initiates the CS calling services of 2G/3G communication patterns, idiographic flow is as follows：
S501, terminal upper unit sends antenna switching command, and LTE physical layers change the antenna measurement configuration of descending CPR measuring units.Mobile terminal upper unit sends antenna switching command to LTE physical layer control units, LTE physical layers control unit is by the descending CPR (CQI of LTE, PMI, RI) measuring unit antenna measurement configuration 4TX/1RX or 2TX/1RX or 1TX/1RX are adjusted to by original 4TX/2RX or 2TX/2RX or 1TX/2RX.S502, is configured according to the antenna measurement, carries out descending CPR measurements.Descending CPR measuring units only receive first antenna（Primary antenna）Pilot signal carry out CPR measurements, therefore, descending CPR measuring units are by order instruction（Rank Indicator, RI) be set to 1, and carry out RI for 1 and antenna measurement be configured to 4TX/1RX or 2TX/1RX or 11 RX of TX/ when broadband and subband pre-coding matrix instruction（Pre-coding Matrix Indicator, PMI) and channel quality instruction（Channel Quality Indicator, CQI) measurement.
5503, measurement result is reported into network side.If now CPR is given the correct time in periodicity, by CPR measurement result by PUCCH channel report networks side（Base station）；If aperiodicity is reported, the DCI instructions for waiting network side PDCCH channels to carry, by after CPR measurement result and Traffic Channel group bag by Physical Uplink Shared Channel（Physical Uplink Shared Channel, PUSCH) on 4 blunt base stations.In one kind is implemented, pattern is reported for aperiodic, base station indicates mobile terminal reporting PMI/CQI/RI in descending PDCCH DCI, on call time and determined by base station, in 3GPP test case, mobile terminal reports CPR measurement result every lms to base station, and base station scheduling time delay is 10ms.Pattern is reported for periodicity, report cycle is appointed in base station with mobile terminal in advance, to time point mobile terminal reporting PMI/CQI/RI.Given the correct time on broadband, general CQI/PMI report cycles are 8 frames（Frame the blunt cycle of)=80ms, RI upper 4 is 48 Frame of x=320ms;CQI/PMI report cycles are 16 Frame=160ms under extreme case, and RI reports the time cycle to be 32 16 Frame of x=5.12s.So mobile terminal typically can be obtained by the new PDSCH configurations in base station in Is, extreme case may have 5 ~ 6s.
5504, data transfer mode is adjusted according to the information from network side.
LTE physical layers receiving unit keeps primary antenna configuration and physical layer control channel PCFICH/PDCCH, Physical Broadcast Channel (Physical Broadcast Channel,) and PHICH PBCH, Traffic Channel PDSCH reception pattern, waits LTE base station that first antenna is used only according to what step S503 was reported（Primary antenna) receive when CPR measurement results scheduling adapt to single antenna reception PDSCH transmission pattern.Specifically, LTE physical layer elements obtain renewal configuration information of the base station to PDSCH by decoding the DCI information of PDCCH channels, the configuration of LTE physical layer receiving units is updated after being handled through LTE physical layers control unit, the configuration is matched with mobile terminal in LTE communication pattern using the wireless transmission environments of 1 reception antenna.
5505, the second antenna is switched into the second communication pattern.
The upper unit of mobile terminal controls the signal for interrupting diversity reception antenna under the first communication pattern to receive, and the antenna is switched into 2G/3G communication patterns.
S506, mobile terminal initiates CS domains business in 2G/3G cells.It will be understood by those skilled in the art that duration is set up in caller CPR may be waited to report LTE communication pattern in moment and step S503 to wait base station scheduling time delay and increase with step S502, typically increase within Is, be acceptable.Reference picture 6, when mobile terminal is in the PS connection status of LTE communication pattern, realizes the circuit domain called service of 2G/3G communication patterns, specific handling process is as follows：
S601, mobile terminal is received during being received under 2G/3G idle conditions after the beep-page message of 2G/3G cells, and mobile terminal upper unit sends antenna switching command to LTE physical layer control units.
Step S501 to S505 in S601 to S605, with the specific real-time mode shown in Fig. 5 is essentially identical, and this is not repeated.
S606, mobile terminal is in 2G/3G cells response CS domains called service.Referring to Fig. 7, when mobile terminal is in the PS connection status of LTE communication pattern, realizing the location area updating of 2G/3G communication patterns, specific handling process is as follows：
S701, mobile terminal needs to carry out 2G/3G location area updatings, and mobile terminal upper unit sends antenna switching command to LTE physical layer control units.It will be understood to those skilled in the art that mobile terminal needs the scene for carrying out 2G/3G location area updatings to include but is not limited to：Periodical location area renewal is carried out, or mobile terminal measures under 2G/3GIDLE states and finds the position area edge in 2G/3G networks.
Step S501 to S505 in S701 to S705, with the specific real-time mode shown in Fig. 5 is essentially identical, and this is not repeated.
S706, mobile terminal is in 2G/3G cell launch positions area more new business.
The embodiment of the present invention additionally provides the corresponding mobile terminal of above-mentioned mobile terminal antenna switching method, the structural representation of mobile terminal shown in reference picture 8, the mobile terminal supports that the first communication pattern and the second communication pattern are simultaneously standby, and the mobile terminal includes：Timing unit 801, the first switch unit 802 and the second switch unit 803, wherein：Timing unit 801, for the mobile terminal connection status is in first communication pattern, when second communication pattern is in idle condition, the timing since the downlink data of second communication pattern receives the initial time at interval, and when the downlink data of second communication pattern receives interval time and reached, trigger first switch unit 802;Since being received the downlink data of second communication pattern, when the downlink data received duration of second communication pattern is reached, the second switch unit 803 is triggered;First switch unit 802, for diversity reception antenna to be switched into the second communication pattern from the first communication pattern, for the reception of the second communication pattern downlink data；Second switch unit 803, for diversity reception antenna to be switched into the first communication pattern from the second communication pattern.It is understood that a timing unit can also be respectively provided with for each timing cycle, when corresponding timing cycle is reached, corresponding antenna switching unit is controlled to carry out antenna switching respectively by each timing unit.And the switch unit 801 of the first switch unit 802 and second can also be integrated into an antenna switching unit, and when corresponding timing cycle is reached, another communication pattern is switched to from a kind of communication pattern to diversity reception antenna.For example, antenna switching unit can be a switch, the structural representation of mobile terminal as shown in Figure 9, the mobile terminal includes：Antenna combination 91, antenna switching unit 92 and communication unit 93, wherein：Antenna combination 91 includes the antenna 912 of first antenna 911 and second.Communication unit 93 can include baseband processing unit 931, first mode radio frequency unit 932 and second mode radio frequency unit 933, the first mode radio frequency unit 932 and second mode radio frequency unit 933 support the first communication pattern and the second communication pattern respectively, first antenna 911 can as first mode radio frequency unit 932 primary antenna, second antenna 912 is diversity reception antenna, first mode radio frequency
Unit 932 and second mode radio frequency unit 933 share the second antenna 912.In specific implementation, the timing unit can be arranged in the baseband processing unit 931, and when timing is reached, communication unit 93 directly can control antenna switching unit to switch over.In specific implementation, the type of the downlink data of second communication pattern includes at least two.For example, downlink data can be the measurement data of the second communication pattern cell, or paging message data.First communication pattern can be LTE communication pattern, and second communication pattern can be 2G/3G communication patterns, for example, gsm communication pattern.In specific implementation, the structural representation of the mobile terminal shown in reference picture 10, mobile terminal can also include：Upper unit 10, LTE physical layer elements 20 and antenna switching unit 30.The LTE physical layer elements 20 can include LTE physical layers control unit 201, the descending CPR measuring units 202 of LTE, LTE physical layers receiving unit 203, wherein：
LTE physical layers control unit 201, for when receiving the antenna switching command for carrying out self terminal upper unit 10, the antenna measurement of the modification descending CPR measuring units 202 of LTE to be configured；After the renewal configuration information from network side is received, control the LTE physical layers receiving unit 203 to update and receive configuration；
The descending CPR measuring units 202 of LTE, for carrying out CPR measurements under antenna measurement configuration, generate the upper 4 blunt measurement result to network side；The LTE physical layers receiving unit 203, the signal from network side is received for the reception configuration according to the renewal；The terminal upper unit 10 is used in the case where the LTE physical layers receiving unit 203 updates and receives configuration, and control antenna switching unit 30 carries out the switching of antenna links scenarios.One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment can be by program to instruct the hardware of correlation to complete, the program can be stored in a computer-readable recording medium, and storage medium can include： ROM、 RAM,
Disk or CD etc..Although present disclosure is as above, the present invention is not limited to this.Any those skilled in the art, without departing from the spirit and scope of the present invention, can be made various changes or modifications, therefore protection scope of the present invention should be defined by claim limited range.
+
Claims (1)
- Claim1. a kind of mobile terminal antenna switching method, the mobile terminal supports that the first communication pattern and the second communication pattern are simultaneously standby, the antenna switching method includes：When first communication pattern is in connection status, when second communication pattern is in idle condition, the timing since the downlink data of second communication pattern receives the initial time at interval, when the downlink data of second communication pattern, which receives interval time, to be reached, diversity reception antenna is switched into the second communication pattern from the first communication pattern, for the reception of the second communication pattern downlink data；When the downlink data received duration of second communication pattern is reached, the diversity reception antenna is switched into the first communication pattern from the second communication pattern.2. the mobile terminal antenna switching method as described in claim 1, it is characterised in that the type of the downlink data of second communication pattern includes at least two.3. mobile terminal antenna switching method as claimed in claim 2, it is characterised in that the downlink data is the measurement data or paging message data of the second communication pattern cell.4. the mobile terminal antenna switching method as described in claim 3, it is characterized in that, when the downlink data is the measurement data of the second communication pattern cell, the downlink data reception interval time of second communication pattern is determined that the downlink data received duration of second communication pattern is determined by the reception time of the cell measurement data by the cell measurement time of the second communication pattern cell；When the downlink data is the paging message data of the second communication pattern cell, the downlink data reception interval time of second communication pattern is determined that the downlink data received duration of second communication pattern is determined by the beep-page message reception time of the cell by the paging cycle of the second communication pattern cell.5. the mobile terminal antenna switching method as described in claim 1, it is characterised in that first communication pattern is LTE communication pattern, second communication pattern is 2G/3G communication patterns.6. mobile communication terminal antenna switching method as claimed in claim 5, it is characterised in that also include：When receiving the antenna switching command from the mobile terminal upper strata, LTE physical layers change the antenna measurement configuration of descending CPR measurements；LTE physical layers carry out in descending CPR measurements, generation the just blunt measurement result to network side under antenna measurement configuration；After the renewal configuration information from network side for the measurement result is received, LTE physical layers, which update, receives configuration, to adapt to the data-transmission mode of single antenna reception；LTE physical layers receive the signal from network side using the reception configuration of the renewal；The mobile terminal upper strata controls the switching of the mobile terminal diversity reception antenna links scenarios in the case where the LTE physical layers update and receive configuration.7. mobile terminal antenna switching method as claimed in claim 6, it is characterised in that the switching of the control mobile terminal diversity reception antenna links scenarios, including：Control the signal for interrupting diversity reception antenna under LTE communication patterns to receive, the diversity reception antenna is switched to 2G/3G communication patterns.8. mobile terminal antenna switching method as claimed in claim 6, it is characterised in that the antenna measurement configuration of the descending CPR measurements of modification includes：The antenna measurement that descending CPR is measured is configured is adjusted to 2TX/1RX or 1TX/1RX by 4TX/1RX or 2TX/1RX or 1TX/1RX.9. mobile terminal antenna switching method as claimed in claim 6, it is characterised in that the descending CPR measurements of carry out include：The pilot signal of primary antenna is only received, the broadband and subband PMI and CQI when progress RI is 1 and antenna measurement is configured to 4TX/1RX or 2TX/1RX or 1TX/1RX are measured.10. mobile terminal antenna switching method as claimed in claim 6, it is characterised in that described measurement result is reported into network side to include：If CPR is given the correct time in periodicity, by CPR measurement result by PUCCH channel report networks side.11. mobile terminal antenna switching method as claimed in claim 6, it is characterised in that described measurement result is reported into network side to include：If aperiodicity is reported, after the DCI instructions of network side PDCCH channels carrying are received, according to DCI instructions by after CPR measurement result and Traffic Channel group bag by PUSCH channel report networks side.12. mobile terminal antenna switching method as claimed in claim 6, it is characterised in that the renewal, which receives configuration, to be included：By decoding the DCI information of PDCCH channels, renewal configuration information of the network side to PDSCH is obtained, is received and configured according to the renewal configuration information update；To adapt to the PDSCH transmission pattern of single antenna reception.13. mobile terminal antenna switching method as claimed in claim 6, it is characterised in that the mobile terminal upper strata sends the antenna switching command when 2G/3G communication pattern idle conditions have issued circuit domain calling service；After the switching of the mobile terminal diversity reception antenna links scenarios is controlled, the diversity reception antenna after the switching is utilized to initiate circuit domain calling service in circuit domain communication network.14. the mobile terminal antenna switching method as described in claim 6, it is characterised in thatAfter the beep-page message that 2G/3G cells are received during being received under 2G/3G communication pattern idle conditions, the mobile terminal upper unit sends antenna switching command to the LTE physical layers；After the switching of the mobile terminal diversity reception antenna links scenarios is controlled, in 2G/3G cell response circuits domain called service.15. mobile terminal antenna switching method as claimed in claim 6, it is characterised in that when needing 2G/3G location area updatings, the mobile terminal upper strata sends antenna switching command to the LTE physical layers；After the switching of the mobile terminal diversity reception antenna links scenarios is controlled, in 2G/3G cell launch positions area more new business.16.-kind of mobile terminal, the mobile terminal supports that the first communication pattern and the second communication pattern are simultaneously standby, it is characterised in that the mobile terminal includes：Timing unit, the first switch unit and the second switch unit, wherein：The timing unit, is in connection status, when second communication pattern is in idle condition, from second communication pattern for the mobile terminal in first communication pattern Downlink data receive the initial time at interval and start timing, and when the downlink data of second communication pattern receives interval time and reached, trigger first switch unit；Since being received the downlink data of second communication pattern, when the downlink data received duration of second communication pattern is reached, the second switch unit is triggered；First switch unit, for diversity reception antenna to be switched into the second communication pattern from the first communication pattern, for the reception of the second communication pattern downlink data；Second switch unit, for diversity reception antenna to be switched into the first communication pattern from the second communication pattern.17. mobile terminal as claimed in claim 16, it is characterised in that the type of the downlink data of second communication pattern includes at least two.18. mobile terminal as claimed in claim 17, it is characterised in that the downlink data is the measurement data or paging message data of the second communication pattern cell.19. mobile terminal as claimed in claim 16, it is characterised in that first communication pattern is LTE communication pattern, second communication pattern is 2G/3G communication patterns.20. mobile terminal as claimed in claim 19, it is characterised in that also include：Terminal upper unit, LTE physical layer elements and antenna switching unit, wherein：The LTE physical layer elements, for when receiving the antenna switching command for carrying out self terminal upper unit, the antenna measurement configuration of descending CPR measuring units is changed, the descending CPR measurement results produced under antenna measurement configuration are reported into network side；After the renewal configuration information from network side is received, update and receive configuration；The terminal upper unit, in the case of updating in the LTE physical layers and receiving configuration, control antenna switching unit carries out the switching of terminal antenna connected mode.21. mobile terminal as claimed in claim 20, it is characterised in that the LTE physical layer elements include：The descending CPR measuring units of LTE physical layers control unit, LTE and LTE physical layer receiving units, wherein： The LTE physical layers control unit, for when receiving the antenna switching command for carrying out self terminal upper unit, the antenna measurement of the modification descending CPR measuring units of LTE to be configured；After the renewal configuration information from network side is received, control the LTE physical layers receiving unit to update and receive configuration；The descending CPR measuring units of LTE, for carrying out descending CPR measurements under antenna measurement configuration, generation reports the measurement result of network side；The LTE physical layers receiving unit, the signal from network side is received for the reception configuration according to the renewal.
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| PCT/CN2013/090852 WO2015100526A1 (en) | 2013-12-30 | 2013-12-30 | Mobile terminal and antenna switching method thereof |
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| WO2015100526A1 (en) | 2015-07-09 |
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