CN111405530B - Discontinuous receiving energy-saving method based on beam measurement in millimeter wave scene - Google Patents
Discontinuous receiving energy-saving method based on beam measurement in millimeter wave scene Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
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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
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0617—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
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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
- H04B7/0837—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 pre-detection combining
- H04B7/0842—Weighted combining
- H04B7/086—Weighted combining using weights depending on external parameters, e.g. direction of arrival [DOA], predetermined weights or beamforming
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
- H04W52/0248—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal dependent on the time of the day, e.g. according to expected transmission activity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]
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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
A discontinuous receiving energy-saving method based on beam measurement in a millimeter wave scene relates to the field of machine communication Internet of things. The discontinuous receiving energy-saving method based on the beam measurement in the millimeter wave scene can solve the problems of low power consumption and wide coverage of massive machine communication in the internet of things network. The advantages of high-speed communication of M2M are realized by utilizing a millimeter wave beam forming technology, more energy consumption generated by multiple beam searching under a DRX sleep mechanism is reduced, a machine firstly measures and judges whether a beam is misaligned or not through a beam signal, beam forming is carried out according to needs, and an optimal uplink and downlink beam pair is searched; optimizing the structure of a machine receiver to realize dynamic dormancy of different modules in different states; optimizing a DRX sleep mechanism, designing two pre-sleep timers, analyzing communication channel signaling data according to whether a wave beam is misaligned or not in different sleep states, and rapidly switching to the sleep state to meet the low power consumption requirement of mass machine communication.
Description
Technical Field
The invention relates to the field of machine communication Internet of things, in particular to a discontinuous receiving energy-saving method based on beam measurement in a millimeter wave scene.
Background
With the advance of 5G technology, M2M (machine communication) service is rapidly increasing, however, the development of the M2M is limited by the problem of energy consumption. As one of key technologies of the internet of things, M2M communication is widely applied to multiple fields of traffic, finance, smart home, environmental monitoring, smart power grids and the like. The mobile cellular network has the characteristics of high-speed transmission, large-range coverage, high reliability, easiness in deployment and the like, and is an ideal carrier of the service of the Internet of things. Existing cellular networks are primarily optimized and designed for human-to-human communication, however, the unique traffic characteristics of M2M communication pose challenges to cellular networks. For example, in a low-power-consumption wide-coverage service, there is a requirement for massive Machine Type Communication (MTC) connection in an internet of things network, which is very sensitive to power consumption and coverage, and a cellular network has limited capacity and cannot meet the requirement for frequent access of large-scale MTC devices. Therefore, in the fifth generation mobile communication system, solving the large-scale device access problem becomes one of the key scenarios of 5G.
At present, a Discontinuous Reception (DRX) technology has a certain use experience in the fourth generation mobile cellular network LTE, and the DRX technology is directly transported to a 5G network, and an empirical model thereof has a certain uncertainty. Especially without considering the impact of millimeter wave multi-beam-forming on DRX techniques, frequent beam searching will consume longer time and more energy. Ho C H et al (Ho C H, Huang A, Hsieh P J, et al, Energy-efficiency millimeter-wave M2M 5g systems with beam-aware DRX mechanism [ C ]//2017 IEEE 86th temporal Technology Conference (VTC-Fall) IEEE, 2017: 1-5.) describe the use of a beam-aware DRX scheme in the context of M2M and compare it with the DRX scheme in LTE networks. The invention not only fully considers the compatibility of the LTE network, but also focuses on seeking a new method for solving frequent beam searching. Therefore, new methods, new structures, and new mechanisms based on DRX technology are needed.
Disclosure of Invention
The invention aims to provide a discontinuous receiving energy-saving method based on beam measurement in a millimeter wave scene, which can solve the problems of low power consumption and wide coverage of mass machine communication in an internet of things network.
The invention comprises the following steps:
A. an RX (machine) and a TR (base station) start millimeter wave communication, firstly beams are formed into rows, the base station side sends M beams, the machine side sends N beams, the transceiver and the transceiver search for an optimal beam pair, millimeter wave channel wireless resource connection is established, and high-speed data transmission is carried out;
B. starting a data transmission mode, and starting a deactivation timer by RX; if the wave beam is not misaligned, the deactivation timer is overtime, no data is sent to RX, the DRX energy-saving state is switched to, and the step C is executed, otherwise, the deactivation timer is started, and the step B is executed; if the wave beam is not aligned, executing the step A;
C. entering a DRX energy-saving state, starting a 1 st pre-dormancy timer, closing a baseband unit, and continuously monitoring a channel state by an RX; if the wave beam is not misaligned, the 1 st pre-dormancy timer is overtime, no data reaches RX, the RX closes the radio frequency unit and the radio frequency control unit, and the system is switched to a shallow dormancy state, and then step D is executed; otherwise, starting a deactivation timer and executing the step B; if the beam is not aligned before the 1 st pre-dormancy timer is overtime, executing the step A;
D. entering a shallow sleep cycle state, wherein during the cycle sleep state, a DRX software control program unit periodically activates a radio frequency unit, the radio frequency control unit firstly measures the TR-RX beam pair level, if the beam is misaligned, the TR is switched into a beam searching state, and executing a step E; if the wave beam is not misaligned, the RX sends a feedback acknowledgement Ack to the TR, the channel state is supervised, no data arrives at the RX, the sleep is continued, data arrives, the baseband unit is activated, a deactivation timer is started, and the step B is executed; if the wave beam is not in the misalignment state, the shallow sleep timer is overtime, and no data reaches RX, the method is switched to the long sleep cycle state, and step F is executed;
E. the shallow sleep state is switched into a beam searching state to carry out beam forming; starting a 1 st pre-dormancy timer when the beam is not misaligned, and executing the step C;
F. entering a deep sleep cycle state, wherein during the cycle sleep state, a DRX software control program unit periodically activates a radio frequency unit and a radio frequency control unit, firstly, a TR-RX beam pair level is measured, if the beam is misaligned, the TR is switched into a beam searching state, and a step G is executed; if the wave beam is not misaligned, the RX sends a feedback acknowledgement Ack to the TR, the channel state is supervised, no data arrives at the RX, the sleep is continued, data arrives, the baseband unit is activated, a deactivation timer is started, and the step B is executed; if the beam is not in the misalignment state, before the long dormancy timer is overtime, no data reaches RX, starting a 1 st pre-dormancy timer, and executing the step C;
G. the shallow sleep state is switched into a beam searching state to carry out beam forming; if the beam is not misaligned, starting a 2 nd pre-dormancy timer, if the 2 nd pre-dormancy timer is overtime, no data reaches RX, and executing the step F; otherwise, starting a deactivation timer and executing the step B.
In step a, the time consumed for performing the process relates to the number of beams and the performance of the beam pair rapid detection algorithm, and the time is long.
In steps D and F, after the cyclic dormancy is finished, the RX opens the radio frequency unit and the radio frequency control unit, the TR-RX beam pair level measurement is carried out, a beam pair level threshold value TR-RX-ON is set, the measurement value is not less than the TR-RX-ON, the beam is not misaligned, and downlink data can be effectively transmitted; the measurement is less than TR-RX-ON, the beam is misaligned and data cannot be efficiently transferred.
In steps D and F, RX measurement beam level is simple and consumes short time; the key point of the invention is that the wave beam searching is changed into the wave beam measurement after the cyclic dormancy is finished, thereby reducing the frequent wave beam searching, reducing the millimeter wave channel establishing time after the cyclic dormancy and realizing the reduction of energy consumption. After the OFF state is finished, the beam level is measured firstly, the level value is not less than TR-RX-ON, the beam is not misaligned, at the moment, a feedback response Ack is sent to the TR, wireless channel resource connection is established, and channel supervision is started.
In steps D and F, after the cyclic sleep state is over, the DRX software program unit activates the radio frequency unit and the radio frequency control unit, no downlink data arrives, and no baseband unit needs to be activated, otherwise, the baseband unit is activated, which is a structural advantage of the present invention to achieve energy saving.
In step a, the RX structure takes a DRX software control program unit as a core, and controls the radio frequency unit, the radio frequency control unit, and the baseband unit through commands, respectively, and the radio frequency control unit controls the radio frequency unit and the baseband unit through wires.
The DRX software control program unit comprises a deactivation timer, a shallow dormancy timer, a long dormancy timer, a 1 st pre-dormancy timer and a 2 nd pre-dormancy timer.
The 1 st pre-dormancy timer and the 2 nd pre-dormancy timer respectively correspond to a shallow dormancy state and a long dormancy (deep dormancy) state, and can be quickly switched to dormancy when a beam is misaligned, so that a DRX mechanism is optimized, and the dormancy time is prolonged.
When the 1 st or 2 nd pre-sleep timer is started, the baseband unit is in an off state.
The invention discloses a DRX (discontinuous reception) energy-saving method based on beam measurement in an M2M (machine communication) millimeter wave scene, which fully utilizes the advantage of millimeter wave beam forming technology to realize high-speed communication of M2M, reduces more energy consumption generated by multiple beam searching under a DRX sleep mechanism, and is characterized in that a machine firstly measures and judges whether a beam is misaligned or not through a beam signal, performs beam forming as required and searches for an optimal uplink and downlink beam pair; optimizing the structure of a machine receiver to realize dynamic dormancy of different modules in different states; the DRX sleep mechanism is optimized, two pre-sleep timers are designed, and under different sleep states (long and short periods), the communication channel signaling data is analyzed according to whether the wave beam is out of alignment, the sleep state is rapidly switched to, and the sleep state is switched to as frequently as possible, so that the energy consumption is saved.
Compared with the prior art, the invention has the beneficial effects that: after the DRX sleep of massive idle machines is finished, in order to avoid frequent beam searching, the machines firstly carry out beam signal quality testing and judge whether the beam is misaligned or not according to the threshold value of the beam signal quality; meanwhile, a DRX mechanism is optimized, two pre-dormancy timers are designed, and the dormancy can be quickly switched to under the condition that the wave beam is out of alignment, so that the dormancy time is prolonged, and the low-power-consumption requirement of mass machine communication is met.
Drawings
Fig. 1 is a schematic diagram of an energy saving mechanism according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of millimeter wave beamforming.
FIG. 3 is a state transition diagram (step flow diagram) of the present invention.
Fig. 4 is a schematic diagram of the structure of the machine RX receiver. In fig. 4, the respective symbols are as follows: 201. a DRX software control program module; 202. a radio frequency unit; 203. a radio frequency control unit; 204. and a baseband unit.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following embodiments will be further described with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment of the invention comprises the following steps:
as shown in fig. 1, in a DRX energy saving method based on beam measurement in an M2M (machine communication) millimeter wave scene, after DRX dormancy of a large number of idle machines is finished, in order to avoid frequent beam search, the machine first performs a beam signal quality test, and determines whether a beam is misaligned according to a threshold of the beam signal quality; two pre-dormancy timers are designed simultaneously, and communication channel signaling data analysis is carried out according to whether the wave beam is out of alignment under different dormancy states (long and short periods), so that the communication channel signaling data is rapidly switched to the dormancy state. The shallow/deep sleep cycle state starts from the OFF state, enters the ON state after the OFF state is finished, and enters the OFF state after the ON state is finished, and the cycle is carried out until the next step.
As shown in fig. 3, the energy saving process of the present invention is as follows:
A. starting millimeter wave communication between a machine (RX) and a base station (TR), firstly, forming beams, sending M beams by the base station side, sending N beams by the machine side, searching an optimal beam pair by a transceiver and a transmitter, establishing millimeter wave channel wireless resource connection, and carrying out high-speed data transmission;
B. starting a data transmission mode, and starting a deactivation timer by a machine; if the wave beam is not misaligned, the deactivation timer is overtime, no data is sent to the machine, the DRX energy-saving state is switched to, the step C is executed, otherwise, the deactivation timer is started, and the step B is executed; if the beam is not aligned, executing the step A;
C. entering a DRX energy-saving state, starting a 1 st pre-dormancy timer, and continuously monitoring a channel state by an RX; the wave beam is not misaligned, the 1 st pre-dormancy timer is overtime, no data reaches RX, and the RX closes the radio frequency unit 202, the radio frequency control unit 203 and the baseband unit 204 and shifts to a shallow dormancy state; otherwise, starting a deactivation timer and executing the step B; when the beam is misaligned before the 1 st pre-dormancy timer is overtime, executing the step A;
D. entering a shallow sleep cycle state, during the cycle state, the DRX software control program unit 201 periodically activates the radio frequency unit 202 and the radio frequency control unit 203, first performs TR-RX beam pair level measurement, misaligns the beam, and the TR transitions to a beam search state, and then performs step E; the wave beam is not misaligned, RX sends a feedback acknowledgement Ack to TR, the channel state is supervised, no data arrives at RX, the sleep is continued, data arrives, the baseband unit 204 is activated, a deactivation timer is started, and the step B is executed; if the light dormancy timer is overtime and no data reaches RX under the condition that the wave beam is not misaligned, switching to a deep dormancy cycle state, and executing the step F;
E. the shallow sleep state is switched into a beam searching state to carry out beam forming; starting a 1 st pre-dormancy timer when the beam is not misaligned, and executing the step C;
F. entering a deep sleep cycle state, during the cycle state, the DRX software control program unit 201 periodically activates the radio frequency control unit 203 and the radio frequency unit 202, performs TR-RX beam pair level measurement, misaligns the beam, and the TR transitions to a beam search state, and performs step G; the beam is not misaligned, the RX sends a feedback acknowledgement ack to the TR, the channel state is supervised, no data arrives at the RX, the sleep is continued, data arrives, the baseband unit 204 is activated, a deactivation timer is started, and the step B is executed; in the state that the wave beam is not misaligned, before the deep dormancy timer is overtime, no data reaches RX, a 1 st pre-dormancy timer is started, and the step C is executed;
G. the shallow sleep state is switched into a beam searching state to carry out beam forming; starting a 2 nd pre-dormancy timer when the beam is not misaligned, overtime the 2 nd pre-dormancy timer, and executing the step F when no data reaches RX; otherwise, starting a deactivation timer and executing the step B.
Fig. 2 shows a beamforming process, where a base station side transmits M beams, a machine side transmits N beams, and both transceivers find an optimal beam pair, which consumes time and relates to the number of beams and the performance of a fast detection algorithm for the beam pair. Taking a 5G base station as an example, if one sector has 18 beams and one machine emits 4 beams, one machine needs to scan 18x4=72 beam pairs, and with a frame structure of 10ms, beam forming takes 720 ms.
As shown in fig. 1, the beam measurement is only to measure the level of the existing beam pair, only one pair of beams is needed and scanning is not needed, the result can be measured in 1ms, and channel connection is established by 1ms feedback without misalignment, which is a great advantage of beam measurement.
During beam measurement, the DRX software control program only activates the rf unit 202 and the rf control unit 203, and does not need to activate the baseband unit 204, thereby achieving energy saving in system configuration.
The beam measurement is not misaligned, no downlink data arrives after the radio frequency unit 202 feeds back an Ack (here, the radio frequency control unit 203 needs a certain signal processing capability) to establish a channel connection, the baseband unit 204 does not need to be activated, and energy saving is realized again in system structure setting.
As shown in fig. 4, the RX takes a DRX software control program unit 201 as a core, and controls a radio frequency unit 202, a radio frequency control unit 203, and a baseband unit 204 through commands, respectively, and the radio frequency control unit 203 controls the radio frequency unit 202 and the baseband unit 204 through wires.
As shown in fig. 4, RX software control program unit 201 includes a deactivation timer, a shallow sleep timer, a long sleep timer, a 1 st pre-sleep timer, and a 2 nd pre-sleep timer, and the length of the timers is in ms.
As shown in fig. 3, when the beam misalignment occurs, the 1 st pre-sleep timer is started, so that the RX can quickly transition to the short sleep state; and starting the 2 nd pre-dormancy timer, so that the RX can be quickly switched into a long dormancy state, a DRX mechanism is optimized, and the dormancy time is prolonged.
Most of M2M (machine communication) millimeter wave scenes are in a state where the channel environment is relatively stable, and the probability of beam misalignment is also very low, and the beam misalignment is mainly related to the mobility of the machine. As can be seen from the state transition diagram of fig. 3, the probability of transition to the state of step A, E, G is very low, and there is a significant energy saving effect.
Millimeter wave communication is generally suitable for the low speed (mobility) scenario of M2M. Frequent beam searching in a high-speed moving scene not only has the problem of energy conservation, but also has the problem of machine disconnection.
The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
The invention provides a Discontinuous Reception (DRX) energy-saving method based on beam measurement in an M2M (machine communication) millimeter wave scene, wherein after DRX sleep of massive idle machines is finished, in order to avoid frequent beam search, the machine firstly carries out beam signal quality test, and judges whether a beam is misaligned or not according to a threshold value of the beam signal quality; meanwhile, two pre-dormancy timers are designed, and communication channel signaling data are analyzed according to whether the wave beam is out of alignment in different dormancy states (long and short periods), so that the communication channel signaling data are rapidly switched to the dormancy state, and the low power consumption requirement of the machine is met. The invention can realize high-speed communication in the environment of the Internet of things of large-scale machine communication, simultaneously optimize the structure of a machine receiver, optimize a discontinuous dormancy energy-saving mechanism, have obvious energy-saving effect under the condition of stable signal channel environment and conform to the trend of green communication.
Claims (10)
1. A discontinuous receiving energy-saving method based on beam measurement in a millimeter wave scene is characterized by comprising the following steps:
A. starting millimeter wave communication between a machine RX and a base station TR, firstly, forming beams, sending M beams by the base station side, sending N beams by the machine side, searching an optimal beam pair by a transceiver and a transmitter, establishing millimeter wave channel wireless resource connection, and carrying out high-speed data transmission;
B. starting a data transmission mode, and starting a deactivation timer by RX; if the wave beam is not misaligned, the deactivation timer is overtime, no data is sent to RX, the DRX energy-saving state is switched to, and the step C is executed, otherwise, the deactivation timer is started, and the step B is executed; if the wave beam is not aligned, executing the step A;
C. entering a DRX energy-saving state, starting a 1 st pre-dormancy timer, closing the baseband unit 204, and continuously monitoring a channel state by an RX; if the wave beam is not misaligned, the 1 st pre-dormancy timer is overtime, no data reaches RX, the RX closes the radio frequency unit and the radio frequency control unit, and the system is switched to a shallow dormancy state, and then step D is executed; otherwise, starting a deactivation timer and executing the step B; if the beam is misaligned before the 1 st pre-dormancy timer is overtime, executing the step A;
D. entering a shallow sleep cycle state, wherein during the cycle sleep state, a DRX software control program unit periodically activates a radio frequency unit, the radio frequency control unit firstly measures the TR-RX beam pair level, if the beam is misaligned, the TR is switched into a beam searching state, and executing a step E; if the wave beam is not misaligned, the RX sends a feedback acknowledgement Ack to the TR, the channel state is supervised, no data arrives at the RX, the sleep is continued, data arrives, the baseband unit is activated, a deactivation timer is started, and the step B is executed; if the wave beam is not in the misalignment state, the shallow sleep timer is overtime, and no data reaches RX, the deep sleep cycle state is switched to, and the step F is executed;
E. the shallow sleep state is switched into a beam searching state to carry out beam forming; starting a 1 st pre-dormancy timer when the beam is not misaligned, and executing the step C;
F. entering a deep sleep cycle state, wherein during the cycle sleep state, a DRX software control program unit periodically activates a radio frequency unit and a radio frequency control unit, firstly, a TR-RX beam pair level is measured, if the beam is misaligned, the TR is switched into a beam searching state, and a step G is executed; if the wave beam is not misaligned, the RX sends a feedback acknowledgement Ack to the TR, the channel state is supervised, no data arrives at the RX, the sleep is continued, data arrives, the baseband unit is activated, a deactivation timer is started, and the step B is executed; if the beam is not in the misalignment state, before the long dormancy timer is overtime, no data reaches RX, starting a 1 st pre-dormancy timer, and executing the step C;
G. switching the deep sleep state into a beam searching state to perform beam forming; if the beam is not misaligned, starting a 2 nd pre-dormancy timer, if the 2 nd pre-dormancy timer is overtime, no data reaches RX, and executing the step F; otherwise, starting a deactivation timer and executing the step B.
2. The method according to claim 1, wherein in step a, the time-consuming factors in the process of establishing mm wave communication between RX and TR are the number of beams and the performance of the beam pair fast detection algorithm.
3. The method according to claim 1, wherein in steps D and F, after the cyclic sleep state is over, RX turns ON the radio frequency unit and the radio frequency control unit, performs TR-RX beam pair level measurement, sets a beam pair level threshold TR-RX-ON, where the measured value is not less than TR-RX-ON, and the beam is not misaligned, thereby effectively transmitting downlink data; the measurement is less than TR-RX-ON, the beam is misaligned and data cannot be efficiently transferred.
4. The method according to claim 1, wherein in steps D and F, the RX beam level measurement takes a short time to measure the beam level; and after the cyclic dormancy is finished, the beam searching is changed into the beam measurement, so that the frequent beam searching is reduced, the millimeter wave channel establishment time after the cyclic dormancy is reduced, and the energy consumption is reduced.
5. The method as claimed in claim 1, wherein in steps D and F, after the OFF state of the shallow sleep cycle state or the deep sleep cycle state is over, the level of the advanced beam is measured, the level value should not be less than TR-RX-ON, the beam is not misaligned, and then a feedback acknowledgement Ack is sent to TR to establish the wireless channel resource connection, and then the supervision of the channel is started.
6. The method according to claim 1, wherein in steps D and F, after the end of the sleep cycle, the DRX software program unit activates the rf unit and the rf control unit, and does not need to activate the baseband unit if no downlink data arrives, or otherwise activates the baseband unit.
7. The method according to claim 1, wherein in step a, the RX structure takes a DRX software control program unit as a core, and controls the rf unit, the rf control unit, and the baseband unit through commands, respectively, and the rf control unit controls the rf unit and the baseband unit through wires.
8. The method of claim 7, wherein the DRX software control program unit comprises a deactivation timer, a shallow sleep timer, a long sleep timer, a 1 st pre-sleep timer, and a 2 nd pre-sleep timer.
9. The method of claim 8, wherein the 1 st pre-dormancy timer and the 2 nd pre-dormancy timer correspond to a shallow dormancy and a deep dormancy, respectively, and can go to dormancy quickly when a beam misalignment occurs, optimize a DRX mechanism, and prolong the dormancy time.
10. The method of claim 9, wherein the baseband unit 204 is in an off state when starting the 1 st pre-dormancy timer or the 2 nd pre-dormancy timer.
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