CN204131738U - DMR terminal reduces the realizing circuit of circuit power consumption - Google Patents
DMR terminal reduces the realizing circuit of circuit power consumption Download PDFInfo
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- CN204131738U CN204131738U CN201420433004.4U CN201420433004U CN204131738U CN 204131738 U CN204131738 U CN 204131738U CN 201420433004 U CN201420433004 U CN 201420433004U CN 204131738 U CN204131738 U CN 204131738U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The utility model provides the realizing circuit that a kind of DMR terminal reduces circuit power consumption, comprise: supply convertor DCDC module, power supervisor PMU module, processor, baseband circuit, radio frequency transceiver, battery, described power management PMU module input connects supply convertor DCDC module, and its output connects processor, radio frequency transceiver and baseband circuit respectively; Described processor comprises one for receiving from radio frequency transceiver and resolving the digital signal processor DSP of radiofrequency signal field intensity RSSI data, and described digital signal processor DSP is connected with described power management PMU module output.The utility model does not rely on the dormancy awakening electricity-saving mechanism of system base-station, each terminal can dynamic conditioning power-efficient under specific pattern, battery consumption can be saved largely, effectively to reduce DMR terminating circuit average power consumption, extend the standby cruising time of DMR end cell.
Description
Technical field
The utility model relates to wireless communication technology field, particularly relates to the realizing circuit that a kind of DMR terminal reduces circuit power consumption.
Background technology
DMR (Digital Mobile Radio) terminal is a kind of novel digital portable wireless terminal (being commonly called as DMR digital handset) of the DMR technical specification meeting ETSI (ETSI), circuit arrangement is mostly based on embedded platform, software and hardware function ratio traditional analog intercom is powerful, certain base band and radio circuit are also all complicated than traditional analog intercom, use high speed processor and mass storage, circuit power consumption also increases greatly, supports that the design of time brings larger challenge to improving battery.
Portable wireless terminal generally adopts Large Copacity rechargeable battery powered, has higher requirement to the capacity of battery and stand-by time and operating time.Be limited by the factors such as the volume and weight of portable wireless terminal, portability, under limited battery capacity, transmitting power size has conclusive impact to battery capacity and support time.Reduce the electric current that transmitter consumes as far as possible, improve battery standby time and the flying power of portable wireless terminal, extending battery life has very real meaning.
Existing, battery power conservation strategy is by optimizing the dormancy time of terminal equipment and wakeup time ratio, sporadically closed portion functional circuit module, increases call setup extra time etc. some methods of sacrificing performances and realizes.Or need base station system support to realize.
Utility model content
The purpose of this utility model is to provide a kind of DMR terminal to reduce the realizing circuit of circuit power consumption, to improve battery standby time and the flying power of DMR terminal.
The purpose of this utility model is achieved through the following technical solutions.
DMR terminal reduces a realizing circuit for circuit power consumption, comprising: supply convertor DCDC module, power supervisor PMU module, processor, baseband circuit, radio frequency transceiver, battery,
Described power management PMU module input connects supply convertor DCDC module, and its output connects processor, radio frequency transceiver and baseband circuit respectively;
Described processor comprises one for receiving from radio frequency transceiver and resolving the digital signal processor DSP of radiofrequency signal field intensity RSSI data, and described digital signal processor DSP is connected with described power management PMU module output.
Further preferably, the input of described power supervisor PMU module is also connected with a battery.
Further preferably, described processor is established a communications link by I/O interface or control interface and described power supervisor PMU module.
The utility model compared with prior art, beneficial effect is: the realizing circuit of the reduction DMR terminating circuit power consumption that the utility model provides, do not rely on the dormancy awakening electricity-saving mechanism of system base-station, each terminal can dynamic conditioning power-efficient under specific pattern, battery consumption can be saved largely, effectively to reduce DMR terminating circuit average power consumption, extend the standby cruising time of DMR end cell; Also reduce the electromagnetic environmental pollution of Wireless Telecom Equipment simultaneously.
Accompanying drawing explanation
Fig. 1 is the realizing circuit theory diagram that the utility model DMR terminal reduces circuit power consumption;
Fig. 2 is setting triggering economize on electricity handoff threshold value schematic diagram;
Fig. 3 is supply convertor work efficiency curve diagram in a PWM mode;
Fig. 4 is the efficiency curve diagram under supply convertor is operated in PFM pattern;
Fig. 5 is the method flow diagram that DMR terminal reduces circuit power consumption.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
The utility model design concept: the baseband circuit in DMR terminal is power consumption rich and influential family.Generally fairly perfect terminal supplying power resolution circuitry adopts two-stage power supply architecture, and the conversion of first order power voltage step down uses DCDC voltage-dropping power supply circuit; The power supervisor PMU that the second level uses many group voltage to export, exports the different voltage of many groups through secondary power supply conversion and supplies each circuit module respectively.Wherein the power supply of the heavy load of secondary power supply conversion generally all adopts DCDC voltage dropping power supply mode to realize.
At present, the requirement of DMR terminal device hardware circuit to power supply is varied, and baseband circuit is not high to power quality requirements, but some circuit module particularly RF transceiver circuitry power supply is had higher requirements, require low noise, low ripple.General DMR terminal most of time is in standby reception operating state, relatively stricter to the power requirement of receiver circuit, to improve the sensitivity of receiver, ensures good receptivity index, extends the coverage of calling.
But each circuit module of terminal complete machine is not the power supply always needing low noise ripple, and many times some power supply can lower the requirement in other words, the power requirement comprising baseband circuit and portion radio frequency circuit can reduce.Such as between terminal devices close together or the other side's transmitting power larger when, the signal power that receiver can receive is higher, and signal quality is fine, and the at this moment slight change of the power supply noise ripple of partial circuit does not almost affect performance.
Given this, the utility model core concept: the signal strength signal intensity RSSI information received by digital signal processor DSP real-time tracking monitor terminal receiver, the mode of operation of dynamic conditioning terminal inner power supply changeover device (comprising DCDC step-down controller or PMU power supervisor), some power source performances of suitable sacrifice, while guarantee signal effectively receives reliable communication, the conversion efficiency of power supply can be improved under most of application scenarios, effective reduction average current consumption, further space of excavating reduction circuit power consumption, reach saving battery, the object of effective prolongation battery life.
DCDC supply convertor use switch power technology, switching frequency generally in hundreds of KHz to a few megahertz.Conversion efficiency and power supply ripple performance follow the mode of operation of converter relevant.General good converter chip has pulse width modulation (PWM) (Pulse Width Modulte) and pulse frequency modulated PFM (Pulse Frequency Modulte) two kinds of mode of operations.Description is below called for short PWM mode and PFM pattern these two kinds of patterns.
Simple contrast is said, the switching frequency of PWM mode down-converter is fixed, and out-put supply noise is little, and ripple is little; The switching frequency of PFM pattern down-converter can according to load dynamic change, and out-put supply ripple is slightly larger, but conversion efficiency is higher than PWM mode.
Supply convertor or power management chip usually have an external schema and select pin to carry out model selection, or by specific interface (such as I2C) read-write operation internal register, change mode of operation.
As shown in Figure 1, the utility model DMR terminal reduces the realizing circuit of circuit power consumption, comprising:
Supply convertor DCDC module, power supervisor PMU module, processor, baseband circuit, radio frequency transceiver, battery, described processor comprises a digital signal processor DSP,
Digital signal processor DSP is used for receiving from radio frequency transceiver and resolving radiofrequency signal field intensity RSSI data;
The radiofrequency signal field intensity data sending controling instruction that processor is resolved according to digital signal processor DSP is to power supervisor PMU module;
Particularly, according to LBT (Listen Before Transmit) the channel access rule of DMR agreement, before terminal attempts access channel, first to determine whether have activity on channel.No matter under simulation model or figure pattern, terminal inner digital signal processor DSP continues to monitor the signal strength RSSI value obtaining receiver and receive, and with the thresholding N RssiLo comparison of configuration, judges channel activity state.
DMR terminal, according to different channel access strategies, adopts different N RssiLo values.Terminal can select Energy control flexibly according to different channels access strategy, realizes the optimum efficiency of power supply.
As shown in Figure 2, with channel activity thresholding N RssiLo for benchmark, setting triggers economize on electricity handoff threshold value, upper limit N RssiPH, lower limit N RssiPL.Economize on electricity handoff threshold upper lower limit value is followed N RssiLo and is floated.Lower limit N RssiPL is always higher than the side-play amount S1 that N RssiLo mono-is suitable.Higher limit N RssiPH is always higher than the sluggish side-play amount S2 that lower limit N RssiPL mono-is suitable.
When terminal monitoring exceedes predetermined economize on electricity thresholding higher limit N RssiPH to current demand signal field intensity RSSI value, mean that present channel quality is good, beyond active channel identification with realize synchronous expection requirement, the mode of operation that can start power circuit switches, be transformed into PFM pattern, exchange higher power conversion efficiency for, reduce the electric current of battery consumption.
When terminal monitoring to current demand signal field intensity RSSI lower than predetermined economize on electricity thresholding lower limit N RssiPL time, mean that present channel quality has been deteriorated to lower limit critical condition, possibly cannot meet active channel identification and realize synchronous expection requirement, the mode of operation that can start power circuit switches, be transformed into PWM mode, promote power quality, improve radio frequency transceiver performance, to obtain better receiving sensitivity and to launch signal to noise ratio index.
Power supervisor PMU module is used for sending mode of operation switching command to supply convertor DCDC module according to the control command received;
Supply convertor DCDC module is used for being switched to corresponding mode of operation according to mode of operation switching command.
Particularly, processor exports control signal, can export control level as switch-over control signal by an I/O interface; Or by a control interface as I2C or SPI, control the read-write of power supervisor internal register, the mode of operation of Switching power converter device.
Supply convertor DCDC module is by SYNC interface state transition mode of operation, and SYNC=1 high level, PWM mode, DCDC is operated in fixed switching frequency, and power supply ripple is little.SYNC=0 low level, PFM pattern, DCDC enters PFM pattern, reduces switching frequency, keeps high conversion efficiency.
Embodiment
For the parameter curve that a typical DCDC power voltage step down converter chip handbook provides, under identical load current, compare the conversion efficiency difference of PWM and PFM two kinds of mode of operations.
Here is the one group data and curves of power circuit under input voltage 8.4V output voltage 5.0V condition.
Fig. 3 is supply convertor work efficiency curve in a PWM mode.
Fig. 4 is the efficiency curve under supply convertor is operated in PFM pattern.
Contrast under 0.1A current condition, the conversion efficiency under PWM mode is 90%; Conversion efficiency under PFM pattern is 95%, and conversion efficiency can improve 5%.
Contrast under 20mA current condition, the conversion efficiency under PWM mode is 67%; Conversion efficiency under PFM pattern is 92%, and conversion efficiency can improve 25%.
Refer to shown in Fig. 5, DMR terminal reduces the method for circuit power consumption, comprising:
Step 501: to terminal initialization, setting economize on electricity field intensity threshold value;
After reposition machine established by cable by terminal equipment, a rational field intensity RSSI limits is first set in initialization procedure, when ensureing that the signal strength signal intensity RSSI of terminal reception is in this limits, has enough surpluses can obtain the speech quality of satisfying the demand.
Step 502: select whether enable battery saving mode, if so, enter step 503;
Step 503: terminal digital signals processor DSP monitors radiofrequency signal field intensity data RSSI, if when radiofrequency signal field intensity data value exceeds economize on electricity field intensity thresholding higher limit, enter step 504; If during lower than economize on electricity field intensity thresholding lower limit, enter step 505;
Step 504: processor exports control signal, and the mode of operation of supply convertor is switched to PFM pattern;
Step 505: processor exports control signal, switches the mode of operation of supply convertor and gets back to PWM mode;
Step 506: select whether exit battery saving mode, if not, return step 503; If so, terminate.
The realizing circuit of the reduction DMR terminating circuit power consumption that the utility model provides, do not rely on the dormancy awakening electricity-saving mechanism of system base-station, each terminal can dynamic conditioning power-efficient under specific pattern, battery consumption can be saved largely, effectively to reduce DMR terminating circuit average power consumption, extend the standby cruising time of DMR end cell; Also reduce the electromagnetic environmental pollution of Wireless Telecom Equipment simultaneously.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection range of the present utility model.
Claims (3)
1. DMR terminal reduces a realizing circuit for circuit power consumption, it is characterized in that, comprising: supply convertor DCDC module, power supervisor PMU module, processor, baseband circuit, radio frequency transceiver, battery,
Described power management PMU module input connects supply convertor DCDC module, and its output connects processor, radio frequency transceiver and baseband circuit respectively;
Described processor comprises one for receiving from radio frequency transceiver and resolving the digital signal processor DSP of radiofrequency signal field intensity RSSI data, and described digital signal processor DSP is connected with described power management PMU module output.
2. DMR terminal as claimed in claim 1 reduces the realizing circuit of circuit power consumption, and it is characterized in that, the input of described power supervisor PMU module is also connected with a battery.
3. DMR terminal as claimed in claim 1 reduces the realizing circuit of circuit power consumption, it is characterized in that, described processor is established a communications link by I/O interface or control interface and described power supervisor PMU module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420433004.4U CN204131738U (en) | 2014-08-01 | 2014-08-01 | DMR terminal reduces the realizing circuit of circuit power consumption |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420433004.4U CN204131738U (en) | 2014-08-01 | 2014-08-01 | DMR terminal reduces the realizing circuit of circuit power consumption |
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| CN204131738U true CN204131738U (en) | 2015-01-28 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110875866A (en) * | 2018-08-31 | 2020-03-10 | 恩智浦有限公司 | Network device and method for performing network operations in a communication network |
| US10904055B2 (en) | 2019-01-18 | 2021-01-26 | Analog Devices International Unlimited Company | Digital mobile radio with enhanced transceiver |
| CN113938991A (en) * | 2020-06-29 | 2022-01-14 | 大唐移动通信设备有限公司 | Base station radio frequency unit and dormancy awakening method thereof |
-
2014
- 2014-08-01 CN CN201420433004.4U patent/CN204131738U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110875866A (en) * | 2018-08-31 | 2020-03-10 | 恩智浦有限公司 | Network device and method for performing network operations in a communication network |
| CN110875866B (en) * | 2018-08-31 | 2022-08-19 | 恩智浦有限公司 | Network device and method for performing network operations in a communication network |
| US10904055B2 (en) | 2019-01-18 | 2021-01-26 | Analog Devices International Unlimited Company | Digital mobile radio with enhanced transceiver |
| CN113938991A (en) * | 2020-06-29 | 2022-01-14 | 大唐移动通信设备有限公司 | Base station radio frequency unit and dormancy awakening method thereof |
| CN113938991B (en) * | 2020-06-29 | 2023-09-26 | 大唐移动通信设备有限公司 | Base station radio frequency unit and dormancy awakening method thereof |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150128 Termination date: 20210801 |