WO2015100526A1 - 移动终端及其天线切换方法 - Google Patents
移动终端及其天线切换方法 Download PDFInfo
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- WO2015100526A1 WO2015100526A1 PCT/CN2013/090852 CN2013090852W WO2015100526A1 WO 2015100526 A1 WO2015100526 A1 WO 2015100526A1 CN 2013090852 W CN2013090852 W CN 2013090852W WO 2015100526 A1 WO2015100526 A1 WO 2015100526A1
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- WO
- WIPO (PCT)
- Prior art keywords
- communication mode
- mobile terminal
- antenna
- receiving
- measurement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
-
- 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
-
- 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
Definitions
- LTE Long Term Evolution
- PS packet-switched
- CS circuit switched
- PS packet-switched
- CS circuit switched
- IMS-controlled VoIP services will serve as voice solutions in future LTE networks.
- the deployment of the LTE network and the IMS network is a gradual process. Therefore, based on the existing network, three different voice solutions are formed: based on dual standby terminal scheme, Circuit Switched Fallback (CSFB) and Voice over LTE (VOLTE). Both CSFB and VoLTE are LTE voice solutions defined by 3GPP.
- CSFB and VoLTE are LTE voice solutions defined by 3GPP.
- the dual standby terminal solution is a relatively common method. The dual standby terminal can stand in the LTE network and the 2G/3G network at the same time, and can receive and transmit signals from both LTE and 2G/3G networks.
- the essence of the voice solution is to use the traditional 2G/3G network, which has nothing to do with LTE.
- multiple antennas are required because of the need to support multiple communication modes.
- This dual standby mobile terminal has the problems of large size, high cost, and high design difficulty because: Due to the need to simultaneously receive LTE system signals and 2G/3G system signals, the existing mobile terminal needs to configure at least three antennas, wherein two antennas need to be configured for the LTE system, and one antenna is configured for the 2G/3G system. That is to say, compared with the single standby mobile terminal, the mobile terminal with dual standby capability needs to add additional antennas, RF chips, filters and even baseband chips, and also brings greater research and development difficulty, and longer. research period.
- an embodiment of the present invention provides a mobile terminal antenna switching method, where the mobile terminal supports a first communication mode and a second communication mode while waiting, the antenna switching method includes: when the first communication mode When in the connected state, when the second communication mode is in the idle state, starting from the start time of the downlink data receiving interval of the second communication mode, when the downlink data receiving interval time of the second communication mode arrives, Switching the diversity receiving antenna from the first communication mode to the second communication mode for receiving the second communication mode downlink data; when the downlink data reception duration of the second communication mode arrives, the diversity receiving antenna Switching from the second communication mode to the first communication mode.
- the type of the downlink data in the second communication mode includes at least two types.
- the downlink data is measurement data or paging message data of the second communication mode cell.
- the downlink data receiving interval time of the second communication mode is determined by the cell measurement time of the second communication mode cell, where the second The downlink data reception duration of the communication mode is determined by the reception time of the cell measurement data;
- the downlink data is the paging message data of the second communication mode cell
- the downlink data receiving interval time of the second communication mode is determined by the paging cycle of the second communication mode cell, and the second communication mode
- the downlink data reception duration is determined by the paging message reception time of the cell.
- the first communication mode is an LTE communication mode
- the second communication mode is a 2G/3G communication mode
- the antenna switching method further includes: when receiving an antenna switching instruction from an upper layer of the mobile terminal, the LTE physical layer modifies an antenna measurement configuration of downlink CPR measurement; and the LTE physical layer performs downlink in the antenna measurement configuration.
- the CPR measurement generates a measurement result reported to the network side; after receiving the updated configuration information from the network side for the measurement result, the LTE physical layer updates the receiving configuration to adapt to the data transmission mode of the single antenna reception;
- the updated receiving configuration receives a signal from the network side; and the upper layer of the mobile terminal controls switching of the mobile terminal diversity receiving antenna connection mode when the LTE physical layer updates the receiving configuration.
- the controlling the switching of the diversity connection mode of the mobile terminal by the mobile terminal comprises: controlling signal reception of the interrupt diversity receiving antenna in the LTE communication mode, and switching the diversity receiving antenna to the 2G/3G communication mode.
- the adjusting the antenna measurement configuration of the downlink CPR measurement comprises: adjusting the antenna measurement configuration of the downlink CPR measurement by 4TX/1RX or 2TX/1RX or 1TX/1RX to 2TX/1RX or 1TX/1RX.
- the performing the downlink CPR measurement comprises: receiving only the pilot signal of the primary antenna, performing wideband and subband PMI and CQI measurement when the RI is 1 and the antenna measurement is configured as 4TX/1RX or 2TX/1RX or 1TX/1RX.
- the reporting the measurement result to the network side includes: if the CPR is periodically reported, reporting the measurement result of the CPR to the network side by using the PUCCH channel.
- the reporting the measurement result to the network side includes: if it is aperiodic After receiving the DCI command carried by the PDCCH channel on the network side, the CPR measurement result and the traffic channel group are reported to the network side by the PUSCH channel according to the DCI instruction.
- the updating the receiving configuration includes: obtaining the update configuration information of the PDSCH by the network side by decoding the DCI information of the PDCCH channel, and updating the receiving configuration according to the updated configuration information; to adapt to the PDSCH transmission mode of the single antenna reception.
- the upper layer of the mobile terminal sends the antenna switching instruction when initiating a circuit domain calling service in a 2G/3G communication mode idle state; after controlling the switching of the mobile terminal diversity receiving antenna connection mode, in a circuit domain In the communication network, the switched diversity receiving antenna is used to initiate a circuit domain calling service.
- the mobile terminal upper layer unit after receiving the paging message of the 2G/3G cell in the receiving process in the 2G/3G communication mode idle state, the mobile terminal upper layer unit sends an antenna switching instruction to the LTE physical layer; After the handover of the terminal diversity receiving antenna connection mode, the service is called in the 2G/3G cell response circuit domain.
- the embodiment of the present invention further provides a mobile terminal, where the mobile terminal supports the first communication mode and the second communication mode to be in standby at the same time, wherein the mobile terminal includes: a timing unit, a first switch a unit and a second switching unit, wherein: the timing unit is configured to: when the mobile terminal is in a connected state in the first communication mode, and when the second communication mode is in an idle state, from the second communication mode The start time of the downlink data receiving interval starts to be timed, and when the downlink data receiving interval time of the second communication mode arrives, the first switching unit is triggered; when the downlink data of the second communication mode starts receiving When the downlink data receiving duration of the second communication mode arrives, triggering the second switching unit;
- the first switching unit is configured to:
- the type of the downlink data in the second communication mode includes at least two types.
- the downlink data is measurement data or paging message data of the second communication mode cell.
- the first communication mode is an LTE communication mode
- the second communication mode is a 2G/3G communication mode.
- the mobile terminal includes: a terminal upper layer unit, an LTE physical layer unit, and an antenna switching unit, where: the LTE physical layer unit is configured to modify a downlink CPR when receiving an antenna switching instruction from a terminal upper layer unit An antenna measurement configuration of the measurement unit, reporting the downlink CPR measurement result generated in the antenna measurement configuration to the network side; after receiving the update configuration information from the network side, updating the receiving configuration; In the case that the LTE physical layer updates the receiving configuration, the antenna switching unit is controlled to perform switching of the terminal antenna connection mode.
- the LTE physical layer unit includes: an LTE physical layer control unit, an LTE downlink CPR measurement unit, and an LTE physical layer receiving unit, where: the LTE physical layer control unit is configured to receive the upper layer unit from the terminal The antenna measurement configuration of the LTE downlink CPR measurement unit is modified, and the LTE physical layer receiving unit is configured to update the reception configuration after receiving the update configuration information from the network side; the LTE downlink CPR measurement unit is configured to: Performing downlink CPR measurement in the antenna measurement configuration, and generating a measurement result reported to the network side; The LTE physical layer receiving unit is configured to receive a signal from a network side according to the updated receiving configuration.
- the time is started from the start time of the downlink data receiving interval of the second communication mode, and the monitoring is performed.
- a downlink data receiving interval time and a downlink data receiving duration of the second communication mode and switching the diversity receiving antenna from the first communication mode to the second communication mode when the downlink data receiving interval time of the second communication mode arrives, Receiving downlink data for the second communication mode; switching the diversity receiving antenna from the second communication mode to the first communication mode when the downlink data reception duration of the second communication mode arrives, thereby implementing the first
- the communication mode and the second communication mode share one antenna, so the number of antennas can be reduced, thereby saving cost and making the layout of the mobile terminal circuit board easier, thereby reducing design difficulty and shortening the development cycle.
- FIG. 1 is a flowchart of a method for switching a mobile terminal antenna according to an embodiment of the present invention
- FIG. 2 is a flowchart of a method for switching a mobile terminal antenna according to an embodiment of the present invention
- FIG. 3 is a diagram showing a mobile terminal in a PS connection state, GSM according to an embodiment of the present invention
- FIG. 4 is a flowchart of a mobile terminal antenna switching method according to an embodiment of the present invention
- FIG. 1 is a flowchart of a method for switching a mobile terminal antenna according to an embodiment of the present invention
- FIG. 3 is a diagram showing a mobile terminal in a PS connection state, GSM according to an embodiment of the present invention
- FIG. 4 is a flowchart of a mobile terminal antenna switching method according to an embodiment of the present invention
- FIG. 1 is a flowchart of a method for switching a mobile terminal antenna according to an embodiment of the present invention
- FIG. 2 is a flowchart of a method for switching a mobile
- FIG. 5 is a schematic diagram of a mobile terminal connected to a PS connection state in an LTE communication mode, initiating 2G/3G in the embodiment of the present invention
- FIG. 6 is a flowchart of a method for switching an antenna in a communication mode of a CS calling service
- FIG. 6 is a PS connection state in which a mobile terminal is in an LTE communication mode according to an embodiment of the present invention
- FIG. 7 is a flowchart of realizing the 2G/3G communication mode when the mobile terminal is in the PS connection state of the LTE communication mode in the embodiment of the present invention
- FIG. 8 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention
- FIG. 9 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention.
- the mobile terminal antenna switching method may include The following steps:
- S101 Starting from a start time of a downlink data receiving interval of the second communication mode, when the downlink data receiving interval of the second communication mode arrives, switching the diversity receiving antenna from the first communication mode to the first The second communication mode is for receiving the downlink data in the second communication mode.
- S102 When receiving the downlink data of the second communication mode, when the receiving When the downlink data reception duration of the two communication modes arrives, the diversity receiving antenna is switched from the second communication mode to the first communication mode.
- the mobile terminal when the first communication mode is in a connected state, and the second mode is in an idle state, the mobile terminal obtains a receiving duration of the downlink data and a downlink data receiving interval time in the second communication mode, and When the receiving interval time arrives, the diversity receiving antenna for the first communication mode is switched to the second communication mode for receiving the downlink data of the second communication mode, and when the downlink data receiving duration arrives, the second communication mode is further Switching back to the first communication mode, the mobile terminal is in a connected state in the first communication mode, and when the second communication mode is in an idle state, a diversity receiving antenna is used to support two communication modes, so Reducing the number of antennas, which in turn reduces the size of the mobile terminal, saves costs, and shortens the development cycle.
- the start time of the downlink data receiving interval in the second communication mode idle state may be determined according to the protocol of the second communication mode and the configuration of the second communication mode cell, and may be continuously adjusted according to the synchronization information.
- the downlink data receiving interval is the receiving interval time of the downlink data
- the receiving duration is the receiving duration of the downlink data.
- the type of the downlink data in the second communication mode may be multiple, for example, the measurement data of the second communication mode cell or the paging message data of the second communication mode cell.
- the downlink data reception interval of the second communication mode is determined by the cell measurement time of the second communication mode cell, and the downlink of the second communication mode The data reception duration is determined by the reception time of the cell measurement data.
- the downlink data is the paging message data of the second communication mode cell
- the downlink data receiving interval time of the second communication mode is determined by the paging cycle of the second communication mode cell, and the second communication mode
- the downlink data reception duration is determined by the paging message reception time of the cell.
- the first communication mode may be a 4G communication mode, such as an LTE communication mode. Including but not limited to FDD-LTE, TDD-LTE, etc.
- the second communication mode may be a 2G/3G communication mode, including but not limited to GSM, WCDMA, CDMA2000, and TD-SCDMA.
- the first communication mode and the second communication mode specifically include the following: TD-LTE/TD-SCDMA/GSM defined by CCSA ( GPRS) multimode dual-pass terminal type 1, the first communication mode refers to the TD-LTE communication mode, the second communication mode refers to the TD-SCDMA/GSM (GPRS) mode; for the CCSA defined TD-LTE/TD- SCDMA/GSM (GPRS) multimode dual-pass terminal type 2, the first communication mode refers to the TD-LTE/TD-SCDMA communication mode, the second communication mode refers to the GSM (GPRS) mode; for the CCSA defined TD- LTE/LTE FDD/TD-SCDMA/WCDMA/GSM (GPRS) multimode dual-pass terminal type 1, the CCSA defined TD- LTE/LTE FDD/TD-SCDMA
- the first communication mode is an LTE communication mode
- the second communication mode is a GSM communication mode.
- the mobile terminal is in the LTE communication mode PS connection state, and when the GSM communication mode is idle, the GSM network is monitored to receive the GSM cell measurement message and the paging message. Since LTE reception uses two antennas: one main antenna and one diversity antenna, there is no redundant antenna for monitoring data in GSM communication mode. To solve this problem, At regular intervals, the diversity receiving antenna is switched from the LTE communication mode to the GSM communication mode. The specific steps are as follows:
- the mobile terminal is in a PS connection state in the LTE communication mode, and acquires a downlink data timing reception start time T start , a reception interval time, and a reception duration T receive in the GSM communication mode when the GSM communication mode is in an idle state.
- the downlink data may be of various types.
- different types of messages are grouped for convenience of description. For example, one group is a measurement message and the other group is a paging message data.
- the corresponding timing reception start time T start , the reception interval time ⁇ and the reception duration T rcceive can be obtained .
- the timing reception start time T start [n] is used here.
- the mobile terminal shown in FIG. 3 is in the PS connection state, and the GSM reception time interval is shown when the GSM is in the idle state.
- the downlink data for the GSM communication mode includes measurement data of the cell and paging message data.
- T interval [0] indicates the Broadcast Control Channel (BCCH) BCCH initial reception, Received Signal Strength Indicator (RSI) measurement, and Initial Station Identification Code (BSIC) identification. The interval at which the BSIC reconfirms the concurrent data group reception.
- BCCH Broadcast Control Channel
- RSI Received Signal Strength Indicator
- BSIC Initial Station Identification Code
- the BCCH initial reception, the RSSI measurement, the initial BSIC authentication, and the BSIC re-confirmation concurrent data group reception duration T reeeive [0] 6 ms.
- the location of the GSM cell paging group in which the mobile terminal is located and the common control channel (CCCH) with the paging group are determined by the system measurement information of the cell, GSM paging
- T receive [l] 6ms.
- the second timer is set. When the second timer timing reaches Tint ⁇ l], the diversity receiving antenna of the LTE communication mode is switched to the GSM communication mode for receiving the downlink paging message data.
- the timing unit may also be set to perform timing, for example, setting a third timer, when the third timer timing reaches T receive [0], and the GSM communication mode is used as the downlink measurement.
- the receive diversity receive antenna of the data is switched to the LTE communication mode.
- the fourth timer is set. When the fourth timer timing reaches T rceeive [l], the diversity receiving antenna that uses the GSM communication mode as the reception of the downlink paging message data is switched to the LTE communication mode.
- the LTE physical layer Hybrid Automatic Repeat Request (HARQ) retransmission time interval is at least 5 ms
- the maximum of six HARQ processes involved in the GSM reception time, and Each HARQ process will only miss one time due to antenna switching.
- the LTE antenna After the LTE antenna is restored, it can receive HARQ retransmission data and perform combined decoding. Therefore, the overall antenna switching will cause the physical layer error rate to increase, but due to HARQ.
- the retransmission mechanism does not cause a significant increase in the RRC layer packet loss rate.
- the LTE communication mode is Time Division Duplex LTE (TDD-LTE) communication mode
- TDD-LTE Time Division Duplex LTE
- the diversity receiving antenna may be used for measurement of the GSM cell, and may receive the BSIC, but may not receive the broadcast channel (BCH) and the paging channel (Paging Indicator Channel, PCH) data.
- BCH broadcast channel
- PCH paging Indicator Channel
- the mobile terminal can use only a small time slot (GAP), for example, 6 ms for the GSM communication mode, for receiving BCH and PCH data, mainly PCH.
- GAP small time slot
- the timers can be restarted, when the first communication mode of the mobile terminal is in the connected state, and the second communication mode is in the idle state, the cell measurement according to the second communication mode And the paging cycle, the diversity receiving antenna is periodically switched to the second communication mode to monitor the service state of the second communication mode, and a corresponding operation is taken.
- the first communication mode is in a connected state, if a service occurs in the second communication mode, for example, the second communication mode has a calling or called service, or the second communication mode cell has a location update.
- the diversity receiving antenna can also be switched from the first communication mode to the second communication mode.
- the first communication mode as the LTE communication mode and the second communication mode as the 2G/3G communication mode as an example for detailed description: It is found that when the reception of the LTE communication mode is changed from 2 antennas to 1 antenna, the communication is Quality has the following effects: For the Physical Downlink Control Channel,
- PDCCH Physical Downlink Shared Channel
- PCFICH Physical Control Format Indicator Channel
- SNR Signal Noise Ratio
- PDSCH Multiple Input Multiple Output
- MIMO Multiple Input Multiple Output
- the two transport blocks (TB) of the PDSCH channel interfere with each other, and a large number of errors occur.
- the embodiment of the present invention proposes a new processing manner.
- the LTE communication mode when the LTE communication mode is in the PS connection state, if the mobile terminal needs to initiate the 2G/3G CS calling service, respond to the CS called service, or do the CS domain location area update in parallel, the LTE network is subjected to a certain processing process.
- the side adjusts the PDSCH channel of the LTE system by the receive mode or the transmission mode scheduling under the MIMO channel to adapt to the transmission mode under single antenna reception, and then the mobile terminal stops using the diversity receive antenna in the LTE communication mode, and completely switches it to 2G/.
- the 3G communication mode acts as a receiving and transmitting antenna. Referring to the flowchart of the mobile terminal antenna switching method shown in FIG. 4, the mobile terminal interacts with the network side to implement switching of the diversity receiving antenna shared by the LTE communication mode and the 2G/3G communication mode, and the specific steps are as follows:
- the LTE physical layer modifies an antenna measurement configuration of the downlink CPR measurement.
- the LTE physical layer performs downlink CPR measurement in the antenna measurement configuration, and generates a measurement result reported to the network side.
- the LTE physical layer After receiving the updated configuration information from the network side for the measurement result, the LTE physical layer updates the receiving configuration to adapt to the data transmission mode of the single antenna reception. S404. The LTE physical layer receives the signal from the network side by using the updated receiving configuration.
- the upper layer of the mobile terminal controls, in the case that the LTE physical layer updates the receiving configuration, the switching of the mobile terminal diversity receiving connection mode.
- the mobile terminal interacts with the LTE network in time when the diversity receiving antenna is switched, so that the LTE network side timely updates the configuration information and adapts to the data transmission mode of the single antenna reception, thereby reducing error and enhancing service transmission performance.
- the mobile terminal LTE communication mode uses two antennas: a first antenna (main antenna) and a second antenna (diversity receiving antenna), and the 2G/3G communication mode shares the second antenna with the LTE communication mode.
- the upper layer unit of the terminal sends an antenna switching instruction, and the LTE physical layer modifies an antenna measurement configuration of the downlink CPR measurement unit.
- the upper layer unit of the mobile terminal sends an antenna switching instruction to the LTE physical layer control unit, and the LTE physical layer control unit configures the antenna measurement configuration of the LTE downlink CPR (CQI, PMI, RI) measurement unit from the original 4TX/2RX or 2TX/2RX or 1TX/ 2RX is adjusted to 4TX/1RX or 2TX/1RX or 1TX/1RX.
- S502. Perform downlink CPR measurement according to the antenna measurement configuration.
- the downlink CPR measurement unit receives only the pilot signal of the first antenna (main antenna) for CPR measurement.
- the downlink CPR measurement unit sets the rank indicator (RI) to 1, and performs RI to 1 and the antenna measurement configuration as Wideband and Subband Precoding Matrix Indicator (PMI) and Channel Quality Indicator (CQI) measurements for 4TX/1RX or 2TX/1RX or 1 TX/ 1 RX. 5503. Report the measurement result to the network side. If the CPR is periodically reported, the measurement result of the CPR is reported to the network side (base station) by the PUCCH channel; if it is reported aperiodically, the DCI command carried by the PDCCH channel on the network side is awaited, and the measurement result of the CPR is compared with the service channel group.
- PMI Wideband and Subband Precoding Matrix Indicator
- CQI Channel Quality Indicator
- the base station instructs the mobile terminal to report the PMI/CQI/RI in the downlink PDCCH DCI, and the reporting time is determined by the base station.
- the mobile terminal reports to the base station every lms.
- the measurement result of CPR, the base station scheduling delay is 10ms.
- the base station agrees with the mobile terminal in advance for the reporting period, and the mobile terminal reports the PMI/CQI/RI to the time point.
- the LTE physical layer receiving unit maintains the original antenna configuration and the physical layer control channel PCFICH/PDCCH, the physical broadcast channel (PBCH) and the PHICH, and the receiving mode of the traffic channel PDSCH, and waits for the LTE base station to use only the first report according to step S503.
- the CPR measurement result scheduling when the antenna (main antenna) is received is adapted to the PDSCH transmission mode of the single antenna reception.
- the LTE physical layer unit obtains the update configuration information of the PDSCH by the base station by decoding the DCI information of the PDCCH channel, and updates the configuration of the LTE physical layer receiving unit after being processed by the LTE physical layer control unit, where the configuration has been in the LTE communication mode with the mobile terminal.
- the wireless transmission environment using one receiving antenna is matched.
- the upper unit of the mobile terminal controls signal reception of the interrupt diversity receiving antenna in the first communication mode, and switches the antenna to the 2G/3G communication mode.
- the mobile terminal initiates a CS domain service in a 2G/3G cell.
- the duration of the calling setup may increase as the waiting for the CPR reporting time in step S502 and the scheduling delay of the base station in the LTE communication mode in step S503, and generally increase within Is, which is acceptable.
- the circuit domain called service of the 2G/3G communication mode is implemented, and the specific processing flow is as follows:
- the mobile terminal upper layer unit After receiving the paging message of the 2G/3G cell in the receiving process of the 2G/3G idle state, the mobile terminal upper layer unit sends an antenna switching instruction to the LTE physical layer control unit.
- S601 to S605 are substantially the same as steps S501 to S505 in the specific real-time mode shown in FIG. 5, and details are not described herein.
- the mobile terminal responds to the CS domain called service in the 2G/3G cell.
- the location area update of the 2G/3G communication mode is implemented.
- the specific processing flow is as follows:
- the mobile terminal needs to perform 2G/3G location area update, and the mobile terminal upper unit sends an antenna switching instruction to the LTE physical layer control unit.
- the scenario in which the mobile terminal needs to perform the 2G/3G location area update includes, but is not limited to: performing periodic location area update, or the mobile terminal measures the location found in the 2G/3G network in the 2G/3GIDLE state. The edge of the area.
- S701 to S705 are substantially the same as steps S501 to S505 in the specific real-time mode shown in FIG. 5, and details are not described herein.
- the mobile terminal initiates a location area update service in the 2G/3G cell.
- the embodiment of the present invention further provides a mobile terminal corresponding to the mobile terminal antenna switching method. Referring to the structural diagram of the mobile terminal shown in FIG. 8, the mobile terminal supports the first communication mode and the second communication mode while waiting for the mobile terminal.
- the terminal includes: a timing unit 801, a first switching unit 802, and a second switching unit 803, where: a timing unit 801, configured to: the mobile terminal is in a connected state in the first communication mode, and the second communication mode is in an idle state In the state, starting from the start time of the downlink data receiving interval of the second communication mode, and when the downlink data receiving interval time of the second communication mode arrives, triggering the first switching unit 802;
- the first switching unit 802 is configured to use the diversity receiving antenna from the Switching to a second communication mode for receiving the downlink data in the second communication mode;
- Element 803 is configured to switch the diversity receiving antenna from the second communication mode to the first communication mode.
- a timing unit can also be set for each timing period.
- each timing unit controls the corresponding antenna switching unit to perform antenna switching.
- the first switching unit 802 and the second switching unit 801 may also be integrated into one antenna switching unit, and switch the diversity receiving antenna from one communication mode to another when the corresponding timing period arrives.
- the antenna switching unit may be a switch, as shown in FIG. 9, the mobile terminal includes: an antenna combination 91, an antenna switching unit 92, and a communication unit 93, where: the antenna combination 91 includes a first antenna 911 and second antenna 912.
- the communication unit 93 may include a baseband processing unit 931, a first mode radio frequency unit 932, and a second mode radio frequency unit 933, and the first mode radio frequency unit 932 and the second mode radio frequency unit 933 support the first communication mode and the second communication mode, respectively.
- the first antenna 911 can be the primary antenna of the first mode radio frequency unit 932
- the second antenna 912 is the diversity receiving antenna, the first mode radio frequency.
- Unit 932 and second mode radio frequency unit 933 share a second antenna 912.
- the timing unit may be disposed in the baseband processing unit 931. When the timing time arrives, the communication unit 93 may directly control the antenna switching unit to perform handover.
- the type of downlink data of the second communication mode includes at least two types.
- the downlink data may be measurement data of the second communication mode cell, or may be paging message data.
- the first communication mode may be an LTE communication mode
- the second communication mode may be a 2G/3G communication mode, for example, a GSM communication mode.
- the mobile terminal may further include: an upper layer unit 10, an LTE physical layer unit 20, and an antenna switching unit 30.
- the LTE physical layer unit 20 may include an LTE physical layer control unit 201, an LTE downlink CPR measurement unit 202, and an LTE physical layer receiving unit 203, where:
- the LTE physical layer control unit 201 is configured to: when receiving an antenna switching instruction from the terminal upper layer unit 10, modify an antenna measurement configuration of the LTE downlink CPR measurement unit 202; after receiving the update configuration information from the network side, control the The LTE physical layer receiving unit 203 updates the receiving configuration;
- the LTE downlink CPR measuring unit 202 is configured to perform CPR measurement in the antenna measurement configuration, and generate a measurement result of the upper side to the network side; the LTE physical layer receiving unit 203 is configured to receive according to the updated receiving configuration.
- the signal from the network side is used by the terminal upper layer unit 10 to control the antenna switching unit 30 to perform the switching of the antenna connection mode when the LTE physical layer receiving unit 203 updates the receiving configuration.
- the program may be stored in a computer readable storage medium, and the storage medium may include: ROM, RAM, Disk or disc, etc.
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- Mobile Radio Communication Systems (AREA)
Abstract
一种移动终端及其天线切换方法,所述移动终端支持第一通信模式和第二通信模式同时待机,所述天线切换方法包括:当所述第一通信模式处于连接状态,所述第二通信模式处于空闲状态时,从所述第二通信模式的下行数据接收间隔的起始时间开始计时,当所述第二通信模式的下行数据接收间隔时间到达时,将分集接收天线从第一通信模式切换至第二通信模式,以用于第二通信模式下行数据的接收;当所述第二通信模式的下行数据接收持续时间到达时,将所述分集接收天线从第二通信模式切换至第一通信模式。所述移动终端及其天线切换方法能够缩小移动终端体积,降低成本。
Description
移动终端及其天线切换方法 技术领域 本发明涉及移动通信技术,尤其涉及一种移动终端及其天线切换 的方法。 背景技术 长期演进技术(LTE, Long Term Evolution )是国际主流的新一 代宽带无线移动通信技术。 基于 LTE 面向于分组交换(PS , Packet Switched) 域优化的系统设计目标, LTE的网络架构不再区分电路交 换(CS, Circuit Switched )域和 PS域, 采用统一的 PS域架构。 在 新的 LTE系统架构下, 不再支持传统的 CS域语音解决方案, IMS控 制的 VoIP业务将作为未来 LTE网络中的语音解决方案。
由于目前 VoIP业务的性能指标未能达到现有 CS域语音业务的 质量, 而且需要全网部署 IP 多媒体子系统 ( IMS , IP Multimedia Subsystem ), LTE网络和 IMS网络的部署是个逐步的过程。 因此在现 有网络基础上, 形成了三种不同的语音解决方案: 基于双待机终端方 案、 电路域回落(CSFB, Circuit Switched FallBack )和基于 LTE系 统的语音( VoLTE, Voice over LTE )。 CSFB和 VoLTE均为 3GPP定 义的 LTE语音解决方案。 在当前阶段, 双待机终端方案是比较常见的一种方式。 双待机终 端可以同时待机在 LTE网络和 2G/3G网络里, 而且可以同时从 LTE 和 2G/3G 网络接收和发送信号, 其语音解决方案的实质是使用传统 的 2G/3G网络, 与 LTE无关。 在目前的双待移动终端中, 由于需要支持多种通信方式, 因此需 要多根天线, 这种双待移动终端存在体积大、 成本高、 设计难度大的 问题, 这是因为:
由于需要同时接收 LTE系统信号和 2G/3G系统信号, 现有的移 动终端至少需要配置 3根天线, 其中需要针对 LTE系统配置 2根天 线, 针对 2G/3G系统配置 1根天线。 也就是说, 相对于单待移动终 端, 具备双待机能力的移动终端需要增加额外的天线、 射频芯片、 滤 波器甚至基带芯片等, 以及同时也带来了更大的研发难度, 和更长的 研发周期。 发明内容 本发明实施例所要解决的技术问题是如何缩小移动终端体积,降 低移动终端成本。 为解决上述问题,本发明实施例提供了一种移动终端天线切换方 法, 所述移动终端支持第一通信模式和第二通信模式同时待机, 所述 天线切换方法包括: 当所述第一通信模式处于连接状态,所述第二通信模式处于空闲 状态时,从所述第二通信模式的下行数据接收间隔的起始时间开始计 时, 当所述第二通信模式的下行数据接收间隔时间到达时, 将分集接 收天线从第一通信模式切换至第二通信模式,以用于第二通信模式下 行数据的接收; 当所述第二通信模式的下行数据接收持续时间到达时,将所述分 集接收天线从第二通信模式切换至第一通信模式。 可选的, 所述第二通信模式的下行数据的类型包括至少两种。 可选的,所述下行数据为第二通信模式小区的测量数据或寻呼消 息数据。 可选的, 当所述下行数据为第二通信模式小区的测量数据时, 所 述第二通信模式的下行数据接收间隔时间由所述第二通信模式小区 的小区测量时间确定,所述第二通信模式的下行数据接收持续时间由 所述小区测量数据的接收时间确定;
当所述下行数据为第二通信模式小区的寻呼消息数据时,所述第 二通信模式的下行数据接收间隔时间由所述第二通信模式小区的寻 呼周期确定,所述第二通信模式的下行数据接收持续时间由所述小区 的寻呼消息接收时间确定。 可选的, 所述第一通信模式为 LTE通信模式, 所述第二通信模 式为 2G/3G通信模式。 可选的, 所述天线切换方法还包括: 接收到来自所述移动终端上 层的天线切换指令时, LTE物理层修改下行 CPR测量的天线测量配 置; LTE物理层在所述天线测量配置下进行下行 CPR测量, 生成上 报给网络侧的测量结果;在接收到来自网络侧针对所述测量结果的更 新配置信息后, LTE物理层更新接收配置, 以适应单天线接收的数据 传输模式; LTE物理层采用所述更新的接收配置接收来自网络侧的信 号; 所述移动终端上层在所述 LTE物理层更新接收配置的情况下, 控制所述移动终端分集接收天线连接方式的切换。 可选的, 所述控制所述移动终端分集接收天线连接方式的切换, 包括: 控制 LTE通信模式下中断分集接收天线的信号接收, 将所述 分集接收天线切换给 2G/3G通信模式。 可选的, 所述修改下行 CPR测量的天线测量配置包括: 将下行 CPR测量的天线测量配置由 4TX/1RX或 2TX/1RX或 1TX/1RX调整 为 2TX/1RX或 1TX/1RX。 可选的, 所述进行下行 CPR测量包括: 仅接收主天线的导频信 号, 进行 RI 为 1 以及天线测量配置为 4TX/1RX或 2TX/1RX 或 1TX/1RX时的宽带和子带 PMI和 CQI测量。 可选的, 所述将测量结果上报至网络侧包括: 如果 CPR是周期 性上报时, 将 CPR的测量结果由 PUCCH信道上报网络侧。 可选的, 所述将测量结果上报至网络侧包括: 如果是非周期性上
报, 在接收到网络侧 PDCCH信道携带的 DCI指令后, 根据所述 DCI 指令将 CPR的测量结果与业务信道组包后由 PUSCH信道上报网络 侧。 可选的, 所述更新接收配置包括: 通过解码 PDCCH信道的 DCI 信息, 得到网络侧对 PDSCH的更新配置信息, ^据所述更新配置信 息更新接收配置; 以适应单天线接收的 PDSCH传输模式。 可选的, 所述移动终端上层在 2G/3G通信模式空闲状态下发起 电路域主叫业务时发送所述天线切换指令;在控制所述移动终端分集 接收天线连接方式的切换后,在电路域通信网络中利用所述切换后的 分集接收天线发起电路域主叫业务。 可选的,在 2G/3G通信模式空闲状态下接收过程中接收到 2G/3G 小区的寻呼消息之后, 所述移动终端上层单元向所述 LTE物理层发 出天线切换指令;在控制所述移动终端分集接收天线连接方式的切换 后, 在 2G/3G小区响应电路域被叫业务。 在需要 2G/3G位置区更新时, 所述移动终端上层向所述 LTE物 理层发出天线切换指令;在控制所述移动终端分集接收天线连接方式 的切换后, 在 2G/3G小区发起位置区更新业务。 为解决上述问题, 本发明实施例还提供了一种移动终端, 所述移 动终端支持第一通信模式和第二通信模式同时待机, 其特征在于, 所 述移动终端包括: 定时单元、 第一切换单元和第二切换单元, 其中: 所述定时单元,用于所述移动终端在所述第一通信模式处于连接 状态, 所述第二通信模式处于空闲状态时, 从所述第二通信模式的下 行数据接收间隔的起始时间开始计时,并当所述第二通信模式的下行 数据接收间隔时间到达时, 触发所述第一切换单元; 从所述第二通信 模式的下行数据开始接收时起, 当所述第二通信模式的下行数据接收 持续时间到达时, 触发第二切换单元;
所述第一切换单元,用于将分集接收天线从第一通信模式切换至 第二通信模式, 以用于第二通信模式下行数据的接收; 所述第二切换单元,用于将分集接收天线从第二通信模式切换至 第一通信模式。 可选的, 所述第二通信模式的下行数据的类型包括至少两种。 可选的,所述下行数据为第二通信模式小区的测量数据或寻呼消 息数据。 可选的, 所述第一通信模式为 LTE通信模式, 所述第二通信模 式为 2G/3G通信模式。 可选的, 所述移动终端包括: 终端上层单元、 LTE物理层单元和 天线切换单元, 其中: 所述 LTE物理层单元, 用于在接收到来自终端上层单元的天线 切换指令时, 修改下行 CPR测量单元的天线测量配置, 将在所述天 线测量配置下产生的下行 CPR测量结果上报至网络侧; 在接收到来 自网络侧的更新配置信息后, 更新接收配置; 所述终端上层单元, 用于在所述 LTE物理层更新接收配置的情 况下, 控制天线切换单元进行终端天线连接方式的切换。 可选的, 所述 LTE物理层单元包括: LTE物理层控制单元、 LTE 下行 CPR测量单元和 LTE物理层接收单元, 其中: 所述 LTE物理层控制单元, 用于在接收到来自终端上层单元的 天线切换指令时, 修改 LTE下行 CPR测量单元的天线测量配置; 在 接收到来自网络侧的更新配置信息后, 控制所述 LTE物理层接收单 元更新接收配置; 所述 LTE下行 CPR测量单元, 用于在所述天线测量配置下进行 下行 CPR测量, 生成上报给网络侧的测量结果;
所述 LTE物理层接收单元, 用于根据所述更新的接收配置接收 来自网络侧的信号。 可见, 当所述移动终端在所述第一通信模式处于连接状态, 所述 第二通信模式处于空闲状态时,从所述第二通信模式的下行数据接收 间隔的起始时间开始计时,通过监控第二通信模式的下行数据接收间 隔时间及下行数据接收持续时间,并在所述第二通信模式的下行数据 接收间隔时间到达时,将分集接收天线从第一通信模式切换至第二通 信模式, 以用于第二通信模式下行数据的接收; 在所述第二通信模式 的下行数据接收持续时间到达时,将所述分集接收天线从第二通信模 式切换至第一通信模式,从而实现第一通信模式和第二通信模式共用 一根天线, 因此可以减少天线的数量, 从而可以节省成本, 同时使得 移动终端电路板的布局布线更容易一些, 从而可以降低设计难度, 缩 短研发周期。 进一步地, 当发生天线切换时, 通过修改移动终端的配置, 以及 通过和网络侧交互, 实现数据传输方式的变化, 可确保移动通信业务 的顺利进行。 附图说明 图 1是本发明实施例中移动终端天线切换方法的流程图; 图 2是本发明实施例中移动终端天线切换方法的流程图; 图 3是本发明实施例中移动终端处于 PS连接状态, GSM处于空 闲状态时的 GSM接收时间间隔示意图; 图 4是本发明实施例中移动终端天线切换方法的流程图; 图 5是本发明实施例中移动终端处于 LTE通信模式的 PS连接状 态时, 发起 2G/3G通信模式的 CS主叫业务时天线切换方法的流程 图; 图 6是本发明实施例中移动终端处于 LTE通信模式的 PS连接状
态时, 实现 2G/3G通信模式的电路域被叫业务时天线切换方法的流 程图; 图 7是本发明实施例中移动终端处于 LTE通信模式的 PS连接状 态时,实现 2G/3G通信模式的位置区更新时天线切换方法的流程图; 图 8是本发明实施例中移动终端的结构示意图; 图 9是本发明实施例中移动终端的结构示意图; 图 10是本发明实施例中移动终端的结构示意图。 具体实施方式 本发明实施例中, 对于具有多种通信模式同时待机的移动终端, 为解决其移动终端体积大、 成本高、 设计难度大的问题, 采用不同通 信模式共用天线的方式, 减少移动终端天线数量。 并且, 对通信网络 作进一步的监控, 以在合适的时间将共用天线切换至不同的通信模 式。 为使本发明实施例的上述目的、 特征和优点能够更为明显易懂, 下面结合附图对本发明的具体实施例作详细的说明。 本发明实施例中, 所述移动终端支持第一通信模式和第二通信模 式同时待机, 所述第一通信模式和第二通信模式共享分集接收天线。 参照图 1所示的本发明实施例中移动终端天线切换方法的流程图, 当 所述第一通信模式处于连接状态, 所述第二通信模式处于空闲状态 时, 所述移动终端天线切换方法可以包括以下步骤:
S 101 ,从所述第二通信模式的下行数据接收间隔的起始时间开始 计时, 当所述第二通信模式的下行数据接收间隔时间到达时, 将分集 接收天线从第一通信模式切换至第二通信模式,以用于第二通信模式 下行数据的接收。 S102, 从所述第二通信模式的下行数据开始接收时起, 当所述第
二通信模式的下行数据接收持续时间到达时 ,将所述分集接收天线从 第二通信模式切换至第一通信模式。 采用以上方案,所述移动终端在所述第一通信模式处于连接状态, 且所述第二模式处于空闲状态时,通过获取第二通信模式下行数据的 接收时长及下行数据接收间隔时间, 并在接收间隔时间到达时, 将用 于第一通信模式的分集接收天线切换至第二通信模式,用于第二通信 模式下行数据的接收, 在下行数据接收持续时间到达时, 再从第二通 信模式切换回第一通信模式,即可实现所述移动终端在所述第一通信 模式处于连接状态, 所述第二通信模式处于空闲状态时, 采用一根分 集接收天线支持两种通信模式, 因此可以减少天线数量, 进而可以缩 小移动终端体积, 节约成本, 缩短研发周期。 在具体实施中, 可以根据第二通信模式的协议和所述第二通信模 式小区的配置确定所述第二通信模式空闲状态时下行数据接收间隔 的起始时间, 且可以根据同步信息不断调整。 下行数据接收间隔时间 为下行数据的接收间隔时间,接收持续时间为下行数据的接收持续时 间。 在具体实施中, 所述第二通信模式的下行数据的类型可以有多 种, 例如, 可以为第二通信模式小区的测量数据, 也可以为第二通信 模式小区的寻呼消息数据。 当所述下行数据为第二通信模式小区的测量数据时,所述第二通 信模式的下行数据接收间隔时间由所述第二通信模式小区的小区测 量时间确定,所述第二通信模式的下行数据接收持续时间由所述小区 测量数据的接收时间确定。当所述下行数据为第二通信模式小区的寻 呼消息数据时,所述第二通信模式的下行数据接收间隔时间由所述第 二通信模式小区的寻呼周期确定,所述第二通信模式的下行数据接收 持续时间由所述小区的寻呼消息接收时间确定。 其中, 所述第一通信模式可以是 4G通信模式, 如 LTE通信模式,
包括但不限于 FDD-LTE、 TDD-LTE 等。 所述第二通信模式可以是 2G/3G通信模式, 包括但不限于 GSM、 WCDMA、 CDMA2000 和 TD-SCDMA等。 作为一种举例, 在目前中国通信标准化协会( CCSA ) 的双待机 终端规范中, 第一通信模式和第二通信模式具体包括如下几种: 对于 CCSA定义的 TD-LTE/TD-SCDMA/GSM(GPRS)多模双通终 端类型 1 , 第一通信模式指的是 TD-LTE通信模式, 第二通信模式指 的是 TD-SCDMA/GSM(GPRS)模式; 对于 CCSA定义的 TD-LTE/TD-SCDMA/GSM(GPRS)多模双通终 端类型 2,第一通信模式指的是 TD-LTE/TD-SCDMA通信模式,第二 通信模式指的是 GSM(GPRS)模式; 对于 CCSA 定义的 TD-LTE/LTE FDD/TD-SCDMA/WCDMA/ GSM(GPRS) 多模双通终端类型 1 , 第一通信模式指的是 TD-LTE/LTE-FDD 通信模式 , 第 二通信模式 2 指 的是 TD-SCDMA/GSM(GPRS)/WCDMA模式; 对于 CCSA 定义的 TD-LTE/LTE FDD/TD-SCDMA/WCDMA/ GSM(GPRS)多模双通终端类型 2 , 第一通信模式指的是 TD-LTE/LTE-FDD /TD-SCDMA 通信模式, 第二通信模式指的是 GSM(GPRS)/WCDMA模式。 参照图 2 所示的本发明实施例中移动终端天线切换方法的流程 图, 这里以第一通信模式为 LTE通信模式, 第二通信模式为 GSM通 信模式为例进行说明。 移动终端处于 LTE通信模式 PS连接状态, GSM通信模式空闲 状态时, 对 GSM网络进行监控, 以接收 GSM小区测量消息和寻呼 消息。 由于 LTE接收使用两根天线: 一根主天线和一根分集天线, 没有多余的天线供 GSM通信模式的数据进行监控,为解决这一问题,
每隔一段时间,将分集接收天线从 LTE通信模式切换至 GSM通信模 式, 具体步骤如下:
5201 , 移动终端在 LTE通信模式处于 PS连接状态, 在 GSM通 信模式处于空闲状态时, 获取所述 GSM通信模式下的下行数据定时 接收起始时间 Tstart, 接收间隔时间 和接收持续时间 Treceive。 在具体实施中, 所述下行数据可以有多种类型, 本实施例中, 为 便于描述, 将不同类型的消息进行分组。 例如一组为测量消息, 另一 组为寻呼消息数据。针对每一组下行数据均可以获取其相应的定时接 收起始时间 Tstart, 接收间隔时间 Τί^^和接收持续时间 Trcceive, 为描 述方便, 这里用定时接收起始时间 Tstart[n], 接收间隔时间
和接收持续时间 Treceive[n]表示, 其中, n为整数, 且 η=0~Ν-1 , N为 GSM小区下行数据接收的组数, 其中 n=0表示测量数据, n=l表示 寻呼消息数据。 如图 3所示的移动终端处于 PS连接状态, GSM处于 空闲状态时的 GSM接收时间间隔示意图。 对于 GSM通信模式的下行数据, 包括小区的测量数据和寻呼消 息数据。对于测量数据, Tinterval[0]表示广播控制信道( Broadcast Control Channel, BCCH ) BCCH初始接收、 接收信号强度( Received Signal Strength Indicator , RSSI ) 测量、 初始基站识别码 (Base Station Identification Code, BSIC )鉴别、 BSIC重确认并发数据组接收的间 隔时间, 在本实施例中,
以常用配置的 GSM小区 为例, BCCH初始接收、 RSSI测量、 初始 BSIC鉴别、 BSIC重确认 并发数据组接收持续时间 Treeeive[0]=6ms。 对于寻呼消息数据的接收, 由于通过小区的系统测量信息可以精确确定移动终端所处的 GSM小 区寻呼组和带寻呼组的公共控制信道(CCCH )所在复帧内的位置, GSM寻呼的最小周期为 2个复帧, 即 2x51帧 =471ms, 因此可以通过 精确定时, 以 471ms为周期, 每次接收时间为 6ms的方案进行接收, 即
Treceive[l]=6ms。
5202, 从 GSM通信模式的下行数据接收间隔的起始时间 Tstart开
始计时, 当所述 GSM通信模式的下行数据接收间隔时间 Tinted到达 时, 将分集接收天线从 LTE通信模式切换至 GSM通信模式, 以用于 GSM通信模式下行数据的接收。 在具体实施中, 对于下行数据接收间隔时间, 可以设置定时单元 进行计时。 例如, 对于测量数据接收时间间隔, 设置第一定时器, 当 第一定时器定时时长达到 Tinterval[0]=240ms时, 将 LTE通信模式的分 集接收天线切换至 GSM通信模式用作测量数据的接收。 设置第二定 时器, 当第二定时器定时时长达到 Tint^^l]时, 将 LTE通信模式的 分集接收天线切换至 GSM通信模式作下行寻呼消息数据的接收。 S203 , 从所述 GSM通信模式的下行数据开始接收时起, 当所述
GSM通信模式的下行数据接收持续时间 Treceivt^j达时, 将所述分集 接收天线从 GSM通信模式切换至 LTE通信模式。 在具体实施中, 对于下行数据接收持续时间, 同样可以设置定时 单元进行计时, 例如, 设置第三定时器, 当第三定时器定时时长达到 Treceive[0] , 将 GSM通信模式用作下行测量数据的接收分集接收天线 切换至 LTE通信模式。 设置第四定时器, 当第四定时器定时时长达 到 Trceeive[l] , 将 GSM通信模式用作下行寻呼消息数据的接收的分集 接收天线切换至 LTE通信模式。 采用以上方案, 由于 GSM接收持续 6ms, 而 LTE物理层混合自 动重传请求 ( Hybrid Automatic Repeat Request, HARQ )重传的时间 间隔至少为 5ms,因此在 GSM接收时间内最多牵涉 6个 HARQ过程, 而且每个 HARQ过程由于天线切换原因只会错过一次, 待 LTE天线 恢复之后即可接收 HARQ重传数据, 进行合并解码, 因此总体来看 天线切换虽然会造成物理层误码率上升, 但由于有 HARQ重传机制, 因此不会造成 RRC层数据包丟失率显著上升。 当 LTE通信模式为时分双工 LTE ( TDD -LTE )通信模式时, 如 果 GSM的下行接收恰好落在 LTE的上行子帧,就不会对 LTE系统产
生影响。 所述 LTE的上行子帧期间, 分集接收天线可以用于 GSM小 区的测量, 可以接收 BSIC , 只是不可以接收广播信道(Broadcast Channel, BCH )和寻呼信道( Paging Indicator Channel , PCH )数据, 为解决这一问题,移动终端可以只用 ^艮小的时隙( GAP ) ,如对于 GSM 通信模式为 6ms, 用于接收 BCH和 PCH数据, 主要是 PCH。 通过以上分析可知, 对于 GSM通信模式, 需要在间隔 240ms和 471ms时使用 6ms时间进行接收, 所造成的 LTE物理层误块率上升 为: ( 6+6 ) / ( 240+471 ) =1.6%。 因此对 LTE业务影响很小, 但可以 减少天线的使用, 节约成本, 同时降低移动终端设计难度, 缩短研发 周期。 可以理解的是, 在具体实施中, 对于每组下行数据接收间隔的起 始时间, 可以根据同步消息不断调整, 对第二通信模式的下行接收数 据同步处理后更新 Tstart[n]、 T^r n]和 Treceive[n], 即可对各个定时器 重新开始计时, 在所述移动终端的第一通信模式处于连接状态, 第二 通信模式处于空闲状态时, 根据第二通信模式的小区测量和寻呼周 期, 将所述分集接收天线周期性切换至第二通信模式, 以监控所述第 二通信模式的业务状态, 并采取相应的操作。 在具体实施中, 在所述第一通信模式处于连接状态时, 如果第二 通信模式有业务发生, 例如, 第二通信模式有主叫或被叫业务发生, 或者第二通信模式小区有位置更新,也可以将所述分集接收天线从第 一通信模式切换至第二通信模式。 仍以第一通信模式为 LTE通信模 式, 第二通信模式为 2G/3G通信模式为例进行详细说明: 经研究发现, 当 LTE通信模式的接收由 2根天线变为 1根天线 时, 对通信质量会产生以下影响: 对于物理下行控制信道 ( Physical Downlink Control Channel,
PDCCH )、 物理控制格式指示信道 ( Physical Control Format Indicator Channel, PCFICH )等控制信道而言, 当发生 GSM的 CS业务时,
移动终端物理层可以根据系统命令调整控制信道的接收,由于控制信 道采用发射分集,接收天线变为一个以后,天线接收方案由 2TX/2RX 变为 2TX/1RX,只是接收分集增益没有了,信噪比( Signal Noise Ratio, SNR )根据多径环境会有 3~5db的下降。 对于物理下行共享信道 ( Physical Downlink Shared Channel,
PDSCH ) 多入多出 ( Multiple Input Multiple Output, MIMO )传输, 由 2根天线接收变为 1根天线接收之后导致 PDSCH信道的两个传输 块( Transport Block, TB )互为干扰, 出现大量误码;对于其他 PDSCH 的传输模式而言, 接收天线由 2根变为 1根后没有了分集增益, SNR 根据多径环境会有 3~5db的下降, 由于 LTE基站仍保持原编码调制 方法, 因此也会出现误码。 针对上述传输质量问题, 本发明实施例提出一种新的处理方式。 具体地, 在 LTE通信模式处于 PS连接状态时, 移动终端如果需要并 行发起 2G/3G CS主叫业务、响应 CS被叫业务或做 CS域位置区更新 时, 经过一定的处理过程, 使得 LTE网络侧将 LTE 系统的 PDSCH 信道由接收分集或 MIMO信道下的传输模式调度调整为适应单天线 接收下的传输模式, 之后移动终端在 LTE通信模式下停止使用分集 接收天线, 将其完全切换给 2G/3G通信模式作为收、 发天线。 参照图 4所示的移动终端天线切换方法的流程图,这里移动终端 通过与网络侧进行交互, 实现 LTE通信模式与 2G/3G通信模式共享 的分集接收天线的切换, 具体步骤如下:
5401 ,接收到来自所述移动终端上层的天线切换指令时, LTE物 理层修改下行 CPR测量的天线测量配置。
5402, LTE物理层在所述天线测量配置下进行下行 CPR测量, 生成上报给网络侧的测量结果。
5403 , 在接收到来自网络侧针对所述测量结果的更新配置信息 后, LTE物理层更新接收配置, 以适应单天线接收的数据传输模式。
S404, LTE物理层采用所述更新的接收配置接收来自网络侧的信 号。
S405, 所述移动终端上层在所述 LTE物理层更新接收配置的情 况下, 控制所述移动终端分集接收天线连接方式的切换。 由于在进行分集接收天线切换时, 所述移动终端及时与 LTE 网 络进行了交互, 使得 LTE 网络侧及时更新配置信息, 适应单天线接 收的数据传输模式, 因此可以减少误码, 增强业务传输性能。 在本发明一实施方式中, 移动终端 LTE通信模式使用两根天线: 第一天线 (主天线)和第二天线(分集接收天线), 2G/3G通信模式 与所述 LTE通信模式共享第二天线, 以下通过几个具体的业务场景 进行说明: 参照图 5, 在移动终端处于 LTE通信模式的 PS连接状态时, 发 起 2G/3G通信模式的 CS主叫业务, 具体流程如下:
S501 , 终端上层单元发出天线切换指令, LTE 物理层修改下行 CPR测量单元的天线测量配置。 移动终端上层单元向 LTE物理层控制单元发出天线切换指令, LTE物理层控制单元将 LTE下行 CPR ( CQI, PMI, RI )测量单元的 天线测量配置由原先的 4TX/2RX或 2TX/2RX或 1TX/2RX调整为 4TX/1RX或 2TX/1RX或 1TX/1RX。 S502, 根据所述天线测量配置, 进行下行 CPR测量。 下行 CPR测量单元仅接收第一天线(主天线) 的导频信号进行 CPR测量, 因此, 下行 CPR测量单元将秩指示( Rank Indicator, RI ) 设置为 1 ,并进行 RI为 1以及天线测量配置为 4TX/1RX或 2TX/1RX 或 1 TX/ 1 RX 时的宽带和子带预编码矩阵指示 ( Pre-coding Matrix Indicator, PMI )和信道质量指示 ( Channel Quality Indicator, CQI ) 测量。
5503 , 将测量结果上报至网络侧。 如果此时 CPR是周期性上报时, 将 CPR的测量结果由 PUCCH 信道上报网络侧(基站); 如果是非周期性上报, 等待网络侧 PDCCH 信道携带的 DCI指令, 将 CPR的测量结果与业务信道组包后由物理 上行共享信道( Physical Uplink Shared Channel , PUSCH )上4艮基站。 在一种具体实现中, 对于非周期上报模式, 基站在下行 PDCCH DCI中指示移动终端上报 PMI/CQI/RI,上报时间由基站决定,在 3GPP 的测试实例中, 移动终端每隔 lms向基站上报 CPR的测量结果, 基 站调度时延为 10ms。 对于周期性上报模式,基站事先与移动终端约定好上报周期, 到 时间点移动终端上报 PMI/CQI/RI。 宽带上报时, 一般 CQI/PMI上报 周期为 8帧 ( Frame ) =80ms, RI上 4艮周期为 4 x 8 Frame=320ms; 极端情况下 CQI/PMI上报周期为 16 Frame= 160ms, RI上报时间周期 为 32 x 16 Frame=5.12s。所以移动终端一般在 Is内就可以得到基站新 的 PDSCH配置, 极端情况可能有 5 ~ 6s。
5504 , 根据来自网络侧的信息调整数据传输方式。
LTE 物理层接收单元保持原天线配置和物理层控制信道 PCFICH/PDCCH,物理广播信道 ( Physical Broadcast Channel, PBCH ) 和 PHICH, 业务信道 PDSCH的接收模式, 等待 LTE基站根据步骤 S503上报的仅使用第一天线(主天线 )接收时的 CPR测量结果调度 适应单天线接收的 PDSCH传输模式。 具体地, LTE物理层单元通过解码 PDCCH信道的 DCI信息得到 基站对 PDSCH的更新配置信息,经 LTE物理层控制单元处理后更新 LTE物理层接收单元的配置, 该配置已与移动终端在 LTE通信模式 使用 1根接收天线的无线传输环境相匹配。
5505 , 将第二天线切换至第二通信模式。
移动终端的上层单元控制第一通信模式下中断分集接收天线的 信号接收, 将该天线切换给 2G/3G通信模式。
S506, 移动终端在 2G/3G小区发起 CS域业务。 本领域技术人员可以理解, 主叫建立时长可能会随着步骤 S502 等待 CPR上报时刻和步骤 S503 中 LTE通信模式等待基站调度时延 而增加, 一般增加在 Is以内, 是可以接受的。 参照图 6, 移动终端处于 LTE通信模式的 PS连接状态时, 实现 2G/3G通信模式的电路域被叫业务, 具体处理流程如下:
S601 , 移动终端在 2G/3G空闲状态下接收过程中接收到 2G/3G 小区的寻呼消息之后, 移动终端上层单元向 LTE物理层控制单元发 出天线切换指令。
S601至 S605 ,与图 5所示的具体实时方式中的步骤 S501至 S505 基本相同, 此不赘述。
S606, 移动终端在 2G/3G小区响应 CS域被叫业务。 请参阅图 7, 移动终端处于 LTE通信模式的 PS连接状态时, 实 现 2G/3G通信模式的位置区更新, 具体处理流程如下:
S701 , 移动终端需要进行 2G/3G位置区更新, 移动终端上层单 元向 LTE物理层控制单元发出天线切换指令。 本领域的技术人员可以理解, 移动终端需要进行 2G/3G位置区 更新的场景包括但不限于: 进行周期性位置区更新, 或者移动终端在 2G/3GIDLE状态下测量发现处于 2G/3G网络的位置区边缘。
S701至 S705 ,与图 5所示的具体实时方式中的步骤 S501至 S505 基本相同, 此不赘述。
S706, 移动终端在 2G/3G小区发起位置区更新业务。
本发明实施例还提供了上述移动终端天线切换方法对应的移动 终端, 参照图 8所示的移动终端的结构示意图, 所述移动终端支持第 一通信模式和第二通信模式同时待机, 所述移动终端包括: 定时单元 801、 第一切换单元 802和第二切换单元 803 , 其中: 定时单元 801 , 用于所述移动终端在所述第一通信模式处于连接 状态, 所述第二通信模式处于空闲状态时, 从所述第二通信模式的下 行数据接收间隔的起始时间开始计时,并当所述第二通信模式的下行 数据接收间隔时间到达时, 触发所述第一切换单元 802; 从所述第二 通信模式的下行数据开始接收时起, 当所述第二通信模式的下行数据 接收持续时间到达时, 触发第二切换单元 803 ; 第一切换单元 802 , 用于将分集接收天线从第一通信模式切换至 第二通信模式, 以用于第二通信模式下行数据的接收; 第二切换单元 803 , 用于将分集接收天线从第二通信模式切换至 第一通信模式。 可以理解的是, 也可以针对每个定时周期均设置一个定时单元, 在相应定时周期到达时,由每个定时单元分别控制相应的天线切换单 元进行天线切换。而所述第一切换单元 802和第二切换单元 801也可 以集成为一个天线切换单元, 并在相应的定时周期到达时, 对分集接 收天线从一种通信模式切换至另一种通信模式。 例如, 天线切换单元可以是一个开关, 如图 9所示的移动终端的 结构示意图, 所述移动终端包括: 天线组合 91、 天线切换单元 92和 通信单元 93 , 其中: 天线组合 91包括第一天线 911和第二天线 912。 通信单元 93可 以包括基带处理单元 931、 第一模式射频单元 932和第二模式射频单 元 933 , 所述第一模式射频单元 932和第二模式射频单元 933分别支 持第一通信模式和第二通信模式,第一天线 911可以作为第一模式射 频单元 932的主天线, 第二天线 912为分集接收天线, 第一模式射频
单元 932和第二模式射频单元 933共享第二天线 912。 在具体实施中, 所述定时单元可以设置在所述基带处理单元 931 中, 当定时时间到达时, 通信单元 93可以直接控制天线切换单元进 行切换。 在具体实施中,所述第二通信模式的下行数据的类型包括至少两 种。 例如, 下行数据可以为第二通信模式小区的测量数据, 也可以为 寻呼消息数据。 所述第一通信模式可以为 LTE通信模式, 所述第二通信模式可 以为 2G/3G通信模式, 例如为 GSM通信模式。 在具体实施中, 参照图 10所示的移动终端的结构示意图, 移动 终端还可以包括: 上层单元 10、 LTE物理层单元 20和天线切换单元 30。所述 LTE物理层单元 20可以包括 LTE物理层控制单元 201、 LTE 下行 CPR测量单元 202、 LTE物理层接收单元 203 , 其中:
LTE物理层控制单元 201 , 用于在接收到来自终端上层单元 10 的天线切换指令时, 修改 LTE下行 CPR测量单元 202的天线测量配 置; 在接收到来自网络侧的更新配置信息后, 控制所述 LTE物理层 接收单元 203更新接收配置;
LTE下行 CPR测量单元 202, 用于在所述天线测量配置下进行 CPR测量, 生成上 4艮给网络侧的测量结果; 所述 LTE物理层接收单元 203 ,用于根据所述更新的接收配置接 收来自网络侧的信号; 所述终端上层单元 10用于在所述 LTE物理层接收单元 203更新 接收配置的情况下,控制天线切换单元 30进行天线连接方式的切换。 本领域普通技术人员可以理解上述实施例的各种方法中的全部 或部分步骤是可以通过程序来指令相关的硬件来完成,该程序可以存 储于一计算机可读存储介质中, 存储介质可以包括: ROM、 RAM,
磁盘或光盘等。 虽然本发明披露如上, 但本发明并非限定于此。任何本领域技术 人员, 在不脱离本发明的精神和范围内, 均可作各种更动与修改, 因 此本发明的保护范围应当以权利要求所限定的范围为准。
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Claims
1. 一种移动终端天线切换方法, 所述移动终端支持第一通信模式和 第二通信模式同时待机, 所述天线切换方法包括: 当所述第一通信模式处于连接状态, 所述第二通信模式处于空闲 状态时, 从所述第二通信模式的下行数据接收间隔的起始时间开 始计时, 当所述第二通信模式的下行数据接收间隔时间到达时, 将分集接收天线从第一通信模式切换至第二通信模式, 以用于第 二通信模式下行数据的接收; 当所述第二通信模式的下行数据接收持续时间到达时,将所述分 集接收天线从第二通信模式切换至第一通信模式。
2. 如权利要求 1 所述的移动终端天线切换方法, 其特征在于, 所述 第二通信模式的下行数据的类型包括至少两种。
3. 如权利要求 2所述的移动终端天线切换方法, 其特征在于, 所述 下行数据为第二通信模式小区的测量数据或寻呼消息数据。
4. 如权利要求 3 所述的移动终端天线切换方法, 其特征在于, 当所 述下行数据为第二通信模式小区的测量数据时, 所述第二通信模 式的下行数据接收间隔时间由所述第二通信模式小区的小区测量 时间确定, 所述第二通信模式的下行数据接收持续时间由所述小 区测量数据的接收时间确定; 当所述下行数据为第二通信模式小区的寻呼消息数据时, 所述第 二通信模式的下行数据接收间隔时间由所述第二通信模式小区的 寻呼周期确定, 所述第二通信模式的下行数据接收持续时间由所 述小区的寻呼消息接收时间确定。
5. 如权利要求 1 所述的移动终端天线切换方法, 其特征在于, 所述 第一通信模式为 LTE通信模式, 所述第二通信模式为 2G/3G通信 模式。
6. 如权利要求 5所述的移动通信终端天线切换方法, 其特征在于, 还包括: 接收到来自所述移动终端上层的天线切换指令时, LTE 物理层修 改下行 CPR测量的天线测量配置; LTE物理层在所述天线测量配置下进行下行 CPR测量, 生成上才艮 给网络侧的测量结果; 在接收到来自网络侧针对所述测量结果的更新配置信息后, LTE 物理层更新接收配置, 以适应单天线接收的数据传输模式;
LTE物理层采用所述更新的接收配置接收来自网络侧的信号; 所述移动终端上层在所述 LTE物理层更新接收配置的情况下, 控 制所述移动终端分集接收天线连接方式的切换。
7. 如权利要求 6所述的移动终端天线切换方法, 其特征在于, 所述 控制所述移动终端分集接收天线连接方式的切换, 包括:控制 LTE 通信模式下中断分集接收天线的信号接收, 将所述分集接收天线 切换给 2G/3G通信模式。
8. 如权利要求 6所述的移动终端天线切换方法, 其特征在于, 所述 修改下行 CPR测量的天线测量配置包括:将下行 CPR测量的天线 测量配置由 4TX/1RX或 2TX/1RX或 1TX/1RX调整为 2TX/1RX 或 1TX/1RX。
9. 如权利要求 6所述的移动终端天线切换方法, 其特征在于, 所述 进行下行 CPR测量包括: 仅接收主天线的导频信号, 进行 RI为 1 以及天线测量配置为 4TX/1RX或 2TX/1RX或 1TX/1RX时的宽带 和子带 PMI和 CQI测量。
10.如权利要求 6所述的移动终端天线切换方法, 其特征在于, 所述 将测量结果上报至网络侧包括:如果 CPR是周期性上报时,将 CPR 的测量结果由 PUCCH信道上报网络侧。
11.如权利要求 6所述的移动终端天线切换方法, 其特征在于, 所述 将测量结果上报至网络侧包括: 如果是非周期性上报, 在接收到 网络侧 PDCCH信道携带的 DCI指令后,根据所述 DCI指令将 CPR 的测量结果与业务信道组包后由 PUSCH信道上报网络侧。
12.如权利要求 6所述的移动终端天线切换方法, 其特征在于, 所述 更新接收配置包括: 通过解码 PDCCH信道的 DCI信息, 得到网 络侧对 PDSCH的更新配置信息,根据所述更新配置信息更新接收 配置; 以适应单天线接收的 PDSCH传输模式。
13.如权利要求 6所述的移动终端天线切换方法, 其特征在于, 所述 移动终端上层在 2G/3G通信模式空闲状态下发起电路域主叫业务 时发送所述天线切换指令; 在控制所述移动终端分集接收天线连 接方式的切换后, 在电路域通信网络中利用所述切换后的分集接 收天线发起电路域主叫业务。
14.如权利要求 6 所述的移动终端天线切换方法, 其特征在于, 在
2G/3G通信模式空闲状态下接收过程中接收到 2G/3G小区的寻呼 消息之后, 所述移动终端上层单元向所述 LTE物理层发出天线切 换指令; 在控制所述移动终端分集接收天线连接方式的切换后, 在 2G/3G小区响应电路域被叫业务。
15.如权利要求 6所述的移动终端天线切换方法, 其特征在于, 在需 要 2G/3G位置区更新时, 所述移动终端上层向所述 LTE物理层发 出天线切换指令; 在控制所述移动终端分集接收天线连接方式的 切换后, 在 2G/3G小区发起位置区更新业务。
16.—种移动终端, 所述移动终端支持第一通信模式和第二通信模式 同时待机, 其特征在于, 所述移动终端包括: 定时单元、 第一切 换单元和第二切换单元, 其中: 所述定时单元, 用于所述移动终端在所述第一通信模式处于连接 状态, 所述第二通信模式处于空闲状态时, 从所述第二通信模式
的下行数据接收间隔的起始时间开始计时, 并当所述第二通信模 式的下行数据接收间隔时间到达时, 触发所述第一切换单元; 从 所述第二通信模式的下行数据开始接收时起, 当所述第二通信模 式的下行数据接收持续时间到达时, 触发第二切换单元; 所述第一切换单元, 用于将分集接收天线从第一通信模式切换至 第二通信模式, 以用于第二通信模式下行数据的接收; 所述第二切换单元, 用于将分集接收天线从第二通信模式切换至 第一通信模式。
17.如权利要求 16所述的移动终端, 其特征在于, 所述第二通信模式 的下行数据的类型包括至少两种。
18.如权利要求 17所述的移动终端, 其特征在于, 所述下行数据为第 二通信模式小区的测量数据或寻呼消息数据。
19.如权利要求 16所述的移动终端, 其特征在于, 所述第一通信模式 为 LTE通信模式, 所述第二通信模式为 2G/3G通信模式。
20.如权利要求 19所述的移动终端, 其特征在于, 还包括: 终端上 层单元、 LTE物理层单元和天线切换单元, 其中: 所述 LTE物理层单元, 用于在接收到来自终端上层单元的天线 切换指令时, 修改下行 CPR测量单元的天线测量配置, 将在所述天 线测量配置下产生的下行 CPR测量结果上报至网络侧; 在接收到来 自网络侧的更新配置信息后, 更新接收配置; 所述终端上层单元, 用于在所述 LTE物理层更新接收配置的情 况下, 控制天线切换单元进行终端天线连接方式的切换。
21.如权利要求 20所述的移动终端, 其特征在于, 所述 LTE物理层单 元包括: LTE物理层控制单元、 LTE下行 CPR测量单元和 LTE物 理层接收单元, 其中:
所述 LTE物理层控制单元, 用于在接收到来自终端上层单元的 天线切换指令时, 修改 LTE下行 CPR测量单元的天线测量配置; 在 接收到来自网络侧的更新配置信息后, 控制所述 LTE物理层接收单 元更新接收配置; 所述 LTE下行 CPR测量单元, 用于在所述天线测量配置下进行 下行 CPR测量, 生成上报给网络侧的测量结果; 所述 LTE物理层接收单元, 用于根据所述更新的接收配置接收 来自网络侧的信号。
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| PCT/CN2013/090852 WO2015100526A1 (zh) | 2013-12-30 | 2013-12-30 | 移动终端及其天线切换方法 |
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| CN110351785A (zh) * | 2018-04-02 | 2019-10-18 | 华为技术有限公司 | 一种通信方法及其装置 |
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| CN109769267B (zh) * | 2017-11-09 | 2024-04-16 | 天翼电信终端有限公司 | 一种降低同频干扰的处理方法及移动终端 |
| CN110768705B (zh) * | 2018-07-27 | 2021-06-15 | 华为技术有限公司 | 配置天线通道的方法、接收装置以及计算机可读存储介质 |
| CN110233630B (zh) * | 2019-04-29 | 2022-03-25 | 惠州Tcl移动通信有限公司 | 移动终端数据处理方法、移动终端及存储介质 |
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| CN105594296B (zh) | 2018-11-27 |
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