WO2015123816A1 - 释放非授权频谱后的数据处理方法及用户设备 - Google Patents
释放非授权频谱后的数据处理方法及用户设备 Download PDFInfo
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- WO2015123816A1 WO2015123816A1 PCT/CN2014/072236 CN2014072236W WO2015123816A1 WO 2015123816 A1 WO2015123816 A1 WO 2015123816A1 CN 2014072236 W CN2014072236 W CN 2014072236W WO 2015123816 A1 WO2015123816 A1 WO 2015123816A1
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- unlicensed spectrum
- data processing
- base station
- processing process
- user equipment
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- 238000003672 processing method Methods 0.000 title claims abstract description 32
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/14—Spectrum sharing arrangements between different networks
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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
- H04B7/0413—MIMO systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1822—Automatic repetition systems, e.g. Van Duuren systems involving configuration of automatic repeat request [ARQ] with parallel processes
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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
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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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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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/30—Connection release
- H04W76/34—Selective release of ongoing connections
Definitions
- the present invention relates to the field of electronic technologies, and in particular, to a data processing method and user equipment after releasing an unlicensed spectrum. Background technique
- Unlicensed spectrum includes frequency bands for equipment such as industrial, scientific, and medical (ISM), such as three bands 902-928 MHz, 2400-2484.5 MHz, and 5725-5850 MHz in the United States, 2.4 GHz for countries Common ISM band.
- ISM industrial, scientific, and medical
- the main technologies used in the 2.4 GHz ISM band are Wireless Fidelity (WLAN) or Wireless Local Network (WLAN), Bluetooth, Zigbee, and so on.
- Wifi is based on the IEEE, Institute of Electrical and Electronics Engineers 802.11 series of standards, such as 802.11a, 802.11b.
- 802.11g, 802.11n, 802.1 lac, etc. wifi uses the 2.4 GHz ISM band and the 5 GHz band.
- 802.1 lac can use 5GHz unlicensed spectrum.
- 802.11ac can use 5170 MHz ⁇ 5330 MHz, 5490-5710 MHz.
- the frequency range of 5710 ⁇ 5730 MHz is additionally supported in the United States.
- 802.1 lac channelization can support 20MHz, 40MHz, 80MHz, 160MHz and other bandwidth modes.
- Unlicensed spectrum is shared by many users, and these users may belong to different wireless access technologies.
- RAT radio access technology
- LTE Long Term Evolution
- wifi wireless local area network
- Bluetooth wireless local area network
- LBT Listen before Talk
- the maximum occupancy time after the user obtains the unlicensed spectrum is also specified. It needs to be released after a certain period of time, idle for a certain period of time and then restart the competition for the unlicensed spectrum, thus giving each user the opportunity to compete fairly and use the unlicensed spectrum.
- the embodiment of the invention provides a data processing method and a user equipment after releasing the unlicensed spectrum, so as to ensure smooth communication after re-acquiring the unlicensed spectrum and save radio resources.
- a first aspect of the embodiments of the present invention provides a data processing method after releasing an unlicensed spectrum, which may include:
- the user equipment When the user equipment determines that the base station releases the unlicensed spectrum, the user equipment monitors the length of time that the base station releases the unlicensed spectrum, and the release time indicates that the base station releases the unlicensed spectrum to re-acquire the non-requested spectrum.
- the time interval of the licensed spectrum
- the user equipment suspends the data processing procedure attached to the unlicensed spectrum, and resumes the data processing process after the base station reacquires the unlicensed spectrum;
- the user equipment When the release time exceeds the time threshold, the user equipment terminates the data processing procedure attached to the unlicensed spectrum, and selects the licensed spectrum to restart a new data processing procedure or reacquires the unauthorized operation at the base station. After the spectrum, restart the new data processing process.
- the user equipment determines that the base station releases the unlicensed spectrum, including:
- the user equipment detects that the base station releases the unlicensed spectrum according to parameters of the base station.
- the user equipment monitors, by the user equipment, a release time of the unlicensed spectrum, including: the user equipment is started.
- a waiting time timer is used to record the length of time that the base station releases the unlicensed spectrum.
- the waiting time timer does not expire, it is determined that the release time does not exceed the time threshold, when the waiting time timer expires. After determining that the release time exceeds the time threshold;
- the user equipment receives a release time of a specific unlicensed spectrum sent by the base station, and compares the received release time with a preset time threshold to determine whether the received release time exceeds the preset Time threshold
- the user equipment receives the release indication of the unlicensed spectrum sent by the base station, and calculates a release time of the unlicensed spectrum by the base station according to the release indication and a preset rule, and prepares the calculated release time and the preset
- a set time threshold comparison is made to determine if the received release time exceeds the predetermined time threshold.
- the waiting time timer includes a deactivation timer
- the release time of the specific unlicensed spectrum includes at least one of the following: a time occupied by the unlicensed spectrum by another device, an interval period of release and acquisition of the unlicensed spectrum, and the unlicensed spectrum.
- the data processing procedure includes a hybrid automatic repeat request HARQ process;
- the data processing procedure of the unlicensed spectrum is as follows: the user equipment performs at least one of the following operations attached to the unlicensed spectrum: suspending listening to the physical downlink control channel, suspending downlink receiving, suspending uplink sending, and retaining HARQ buffer, suspend receiving downlink HARQ retransmission, suspending receiving downlink HARQ feedback information, suspending transmission uplink
- HARQ retransmits and suspends sending uplink HARQ feedback information
- the user equipment After the user equipment re-acquires the unlicensed spectrum, the user equipment recovers the data processing process, including:
- the user equipment After the user equipment re-acquires the unlicensed spectrum, the user equipment performs at least one of the following operations that are attached to the unlicensed spectrum: resume listening to the physical downlink control channel, resume downlink reception, resume uplink transmission, and resume receiving Downlink HARQ retransmission, resume receiving downlink HARQ feedback information, resume transmitting uplink HARQ retransmission, and resume transmitting uplink HARQ feedback information.
- the data processing procedure includes a hybrid automatic repeat request HARQ process, where the user equipment terminates And the data processing procedure of the unlicensed spectrum is performed by the user equipment, where the user equipment performs a HARQ entity reset operation or performs a deactivation operation of a cell using the unlicensed spectrum;
- the selecting the licensed spectrum to restart a new data processing process or restarting the new data processing process after the base station reacquires the unlicensed spectrum including:
- the user equipment selects the licensed spectrum to restart a new HARQ process or restarts the new HARQ process after the base station reacquires the unlicensed spectrum.
- the data processing procedure includes discontinuous reception of a DRX process
- the user equipment suspending the data processing process attached to the unlicensed spectrum includes: performing, by the user equipment, at least one of the following operations attached to the unlicensed spectrum: maintaining normal operation of each DRX timer, and suspending monitoring Physical downlink control channel, suspending downlink reception, and suspending uplink transmission;
- the user equipment After the user equipment re-acquires the unlicensed spectrum, the user equipment recovers the data processing process, including:
- the user equipment performs at least one of the following operations on the unlicensed spectrum: after the base station re-acquires the unlicensed spectrum, resumes listening to the physical downlink control channel, resumes downlink reception, and resumes uplink transmission.
- the data processing procedure includes Continuously receiving the DRX process
- the user equipment terminates the data processing procedure attached to the unlicensed spectrum, including: the user equipment performing at least one of the following operations attached to the unlicensed spectrum:
- the selecting the licensed spectrum to restart the new data processing process or restarting the new data processing process after the base station reacquires the unlicensed spectrum including:
- the user equipment selects the licensed spectrum to restart the new DRX process or maintains the ongoing DRX process of the licensed spectrum or restarts the new DRX process after the base station reacquires the unlicensed spectrum.
- the eighth possible implementation manner when the cell of the unlicensed spectrum and the cell of the licensed spectrum use the same DRX parameter configuration and DRX operation, When the user equipment terminates the data processing procedure attached to the unlicensed spectrum, the DRX timers are not stopped;
- the data processing procedure includes an automatic retransmission request ARQ process
- the user equipment suspending the data processing process attached to the unlicensed spectrum includes: performing, by the user equipment, at least one of the following operations attached to the unlicensed spectrum: suspending reordering of the radio link control layer RLC Timer, suspend polling retransmission timer;
- the user equipment After the user equipment re-acquires the unlicensed spectrum, the user equipment recovers the data processing process, including:
- the user equipment After the user equipment re-acquires the unlicensed spectrum, the user equipment performs at least one of the following operations that are attached to the unlicensed spectrum: recovering a reordering timer of the radio link control layer, and After the sorting timer expires, the RLC status report is triggered; the polling retransmission timer is resumed, and after the polling retransmission timer expires, the RLC data unit with the polling bit set is triggered to retransmit or send a new RLC data unit.
- the data processing procedure includes an automatic retransmission request ARQ Process
- the user equipment terminates the data processing procedure attached to the unlicensed spectrum, including: the user equipment performing at least one of the following operations attached to the unlicensed spectrum: stopping the reordering timer, stopping the Polling retransmission timer;
- the selecting the licensed spectrum to restart the new data processing process or restarting the new data processing process after the base station reacquires the unlicensed spectrum including:
- the user equipment selects the licensed spectrum to restart the new ARQ process or restarts the new ARQ process after the base station reacquires the unlicensed spectrum.
- the data processing procedure includes a random access procedure
- the user equipment suspends the data processing process attached to the unlicensed spectrum, including: the user equipment performing at least one of the following operations attached to the unlicensed spectrum: suspending a random access response window, suspending the competition Resolve the timer;
- the user equipment After the user equipment re-acquires the unlicensed spectrum, the user equipment performs at least one of the following operations that are attached to the unlicensed spectrum: recovering the random access response window, and restoring the operation of the contention resolution timer.
- the eleventh possible implementation manner of the first aspect in the twelfth possible implementation manner, the data processing process Including the random access process,
- the user equipment terminates the data processing procedure attached to the unlicensed spectrum, including: the user equipment performing at least one of the following operations attached to the unlicensed spectrum: stopping the random access response window and stopping waiting for random access Incoming a response message, stopping the contention resolution timer, and stopping waiting for a contention resolution message;
- the user equipment selects the licensed spectrum to restart a new data processing process or restarts the new data processing process after the base station re-acquires the unlicensed spectrum, including:
- the user equipment selects the licensed spectrum to restart the new random access procedure or restarts the new random access procedure after the base station reacquires the unlicensed spectrum.
- the data processing procedure includes a radio resource management RRM measurement process; And the data processing procedure of the unlicensed spectrum, comprising: the user equipment suspending the RRM measurement process;
- the user equipment After the user equipment re-acquires the unlicensed spectrum, the user equipment recovers the data processing process, including:
- the user equipment resumes the RRM measurement process.
- any one of the thirteenth possible implementation manners of the first aspect in the fourteenth possible implementation manner, the data processing procedure Including radio resource management RRM measurement process;
- the user equipment terminates the data processing procedure attached to the unlicensed spectrum, including: the user equipment releasing the RRM measurement parameter;
- the user equipment selects the licensed spectrum to restart a new data processing process or restarts the new data processing process after the base station re-acquires the unlicensed spectrum, including:
- the user equipment selects to grant the spectrum to restart a new RRM measurement procedure or at the base station After re-acquiring the unlicensed spectrum, restart the new RRM process.
- the data processing procedure includes a channel state information CSI measurement process
- the user equipment suspension of the data processing process attached to the unlicensed spectrum includes: the user equipment suspending the CSI measurement process;
- the user equipment After the user equipment re-acquires the unlicensed spectrum, the user equipment recovers the data processing process, including:
- the user equipment resumes the CSI measurement process.
- the third possible implementation manner of the first aspect the fifteenth possible implementation manner of the first aspect, in the sixteenth possible implementation manner, the data processing process Including channel state information CSI measurement process;
- the user equipment terminates the data processing procedure attached to the unlicensed spectrum, including: the user equipment releasing the CSI measurement parameter;
- the user equipment selects the licensed spectrum to restart a new data processing process or restarts the new data processing process after the base station re-acquires the unlicensed spectrum, including:
- the user equipment selects the licensed spectrum to restart the new CSI measurement process or restarts the new CSI process after the base station reacquires the unlicensed spectrum.
- a second aspect of the embodiments of the present invention provides a user equipment, including:
- a monitoring module configured to: when the user equipment determines that the base station releases the unlicensed spectrum, monitor a length of time that the base station releases the unlicensed spectrum, where the release time indicates that the base station releases the unlicensed spectrum to re-acquire the The time interval of the unlicensed spectrum;
- a first processing module when the release time monitored by the monitoring module does not exceed a time threshold, suspending a data processing process attached to the unlicensed spectrum, and after the base station reacquires the unlicensed spectrum, Recovering the data processing process;
- a second processing module configured to: when the release time monitored by the monitoring module exceeds the time threshold, terminate a data processing process attached to the unlicensed spectrum, and select an authorized spectrum to restart a new data processing process or After the base station reacquires the unlicensed spectrum, the new data processing process is restarted.
- the user equipment further includes: a release determining module, configured to receive indication information about releasing an unlicensed spectrum sent by the base station Determining that the base station releases the unlicensed spectrum, or detecting that the base station releases the unlicensed spectrum according to parameters of the base station.
- a release determining module configured to receive indication information about releasing an unlicensed spectrum sent by the base station Determining that the base station releases the unlicensed spectrum, or detecting that the base station releases the unlicensed spectrum according to parameters of the base station.
- the monitoring module includes:
- a first monitoring module configured to start a waiting time timer for recording a length of time that the base station releases the unlicensed spectrum, and when the waiting time timer does not time out, determining that the release time does not exceed the time threshold, After the waiting time timer expires, determining that the release time exceeds the time threshold;
- a second monitoring module configured to receive a release time of a specific unlicensed spectrum sent by the base station, and compare the received release time with a preset time threshold to determine whether the received release time exceeds the preset Time threshold
- a third monitoring module configured to receive a release indication of the unlicensed spectrum sent by the base station, and calculate a release time of the unlicensed spectrum by the base station according to the release indication and a preset rule, and calculate the release time
- a comparison with a preset time threshold determines whether the received release time exceeds the preset time threshold.
- the waiting time timer includes a deactivation timer
- the release time of the specific unlicensed spectrum includes at least one of the following: the time when the unlicensed spectrum is occupied by other devices, the reserved time for the unlicensed spectrum to be used by other devices, and the system where the base station is located.
- the silent time of the unlicensed spectrum includes at least one of the following: the time when the unlicensed spectrum is occupied by other devices, the reserved time for the unlicensed spectrum to be used by other devices, and the system where the base station is located. The silent time of the unlicensed spectrum.
- the data processing procedure includes a hybrid automatic repeat request HARQ process;
- the module is specifically configured to perform at least one of the following operations attached to the unlicensed spectrum when the release time monitored by the monitoring module does not exceed a time threshold: suspending monitoring of a physical downlink control channel, suspending downlink receiving, and suspending uplink Transmitting, preserving the HARQ buffer, suspending receiving the downlink HARQ retransmission, suspending receiving the downlink HARQ feedback information, suspending the transmission of the uplink HARQ retransmission, and suspending the transmission of the uplink HARQ feedback information; and after the base station reacquires the unlicensed spectrum, Performing at least one of the following operations attached to the unlicensed spectrum: recovering the listening physics Downlink control channel, resume downlink reception, resume uplink transmission, resume receiving downlink HARQ retransmission, resume receiving downlink HARQ feedback information, resume transmitting uplink
- the data processing procedure includes a hybrid automatic repeat request HARQ process, where the second processing
- the module is specifically configured to perform a HARQ entity reset operation or perform a deactivation operation of a cell using the unlicensed spectrum when the release time monitored by the monitoring module exceeds the time threshold, and select a licensed spectrum to restart a new one.
- the HARQ process restarts the new HARQ process after the base station reacquires the unlicensed spectrum.
- the data processing procedure includes discontinuous reception of the DRX process
- the first processing module is configured to: when the release time monitored by the monitoring module does not exceed a time threshold, perform at least one of the following operations attached to the unlicensed spectrum: maintaining normality of each DRX timer Running, suspending monitoring of the physical downlink control channel, suspending downlink reception, and suspending uplink transmission; and, after the base station reacquisitions the unlicensed spectrum, performing at least one of the following operations attached to the unlicensed spectrum: After the base station re-acquires the unlicensed spectrum, it resumes listening to the physical downlink control channel, resumes downlink reception, and resumes uplink transmission.
- the data processing procedure includes Continuously receiving the DRX process
- the second processing module is configured to: when the release time monitored by the monitoring module exceeds the time threshold, perform at least one of the following operations that are attached to the unlicensed spectrum: perform a HARQ entity reset operation, execute Deactivating a cell using the unlicensed spectrum, stopping the DRX timers, and selecting to grant a spectrum to restart a new DRX process or maintaining a DRX process in progress for the licensed spectrum or reacquiring at the base station After the unlicensed spectrum, the new DRX process is restarted.
- the eighth possible implementation manner when the cell of the unlicensed spectrum and the cell of the licensed spectrum use the same DRX parameter configuration and DRX operation, The second processing module does not stop the DRX timers;
- the second processing module stops the DRX timers.
- the data processing procedure includes an automatic retransmission request ARQ process
- the first processing module is specifically configured to perform at least one of the following operations attached to the unlicensed spectrum when the release time monitored by the monitoring module does not exceed a time threshold: suspending the radio link control layer RLC a reordering timer, suspending a polling retransmission timer; and, after the base station reacquisitions the unlicensed spectrum, performing at least one of the following operations attached to the unlicensed spectrum: recovering the wireless link Controlling a reordering timer of the layer, and triggering an RLC status report after the reordering timer expires; resuming the polling retransmission timer, and triggering the setting of the polling bit after the polling retransmission timer expires
- the RLC data unit retransmits or transmits a new RLC data unit.
- the data processing procedure includes an automatic retransmission request ARQ Process
- the second processing module is configured to: when the release time monitored by the monitoring module exceeds the time threshold, perform at least one of the following operations attached to the unlicensed spectrum: stopping the reordering timer Stopping the polling retransmission timer; and selecting to grant the spectrum to restart a new ARQ process or restarting the new ARQ process after the base station reacquires the unlicensed spectrum.
- the data processing procedure includes a random access procedure
- the first processing module is configured to perform at least one of the following operations attached to the unlicensed spectrum when the release time monitored by the monitoring module does not exceed a time threshold: suspending a random access response window And suspending the contention resolution timer; and, after the base station re-acquires the unlicensed spectrum, performing at least one of the following operations attached to the unlicensed spectrum: restoring the random access response window, and restoring the contention resolution timing The operation of the device.
- the eleventh possible implementation manner of the second aspect in the twelfth possible implementation manner, the data processing process Including the random access process,
- the second processing module is specifically configured to: when the release time monitored by the monitoring module exceeds the time threshold, perform at least one of the following operations attached to the unlicensed spectrum: stopping random Accessing the response window and stopping waiting for the random access response message, stopping the contention resolution timer, and stopping the waiting for the contention resolution message; and selecting the authorized spectrum to restart the new random access procedure or reacquiring the unlicensed spectrum at the base station After that, restart the new random access process.
- the data processing procedure includes a radio resource management RRM measurement process; a module, specifically configured to suspend the RRM measurement process when the release time monitored by the monitoring module does not exceed a time threshold; and recover the RRM measurement process after the base station reacquires the unlicensed spectrum .
- the second processing module is specifically configured to: when the release time monitored by the monitoring module exceeds the time threshold, release the RRM measurement parameter; and select a licensed spectrum to restart a new one.
- the data processing procedure includes a channel state information CSI measurement process
- the first processing module is configured to suspend the CSI measurement process when the release time monitored by the monitoring module does not exceed a time threshold; and recover after the base station reacquires the unlicensed spectrum The CSI measurement process.
- the fifteenth possible implementation manner of the second aspect in the sixteenth possible implementation manner, the data processing process Including channel state information CSI measurement process;
- the second processing module is specifically configured to: when the release time monitored by the monitoring module exceeds the time threshold, release the CSI measurement parameter; and select a licensed spectrum to restart a new CSI measurement process or After the base station reacquires the unlicensed spectrum, the new CSI process is restarted.
- a third aspect of the embodiments of the present invention provides a user equipment, which may include a memory and a processor, where the processor invokes a program stored in the memory, and performs the following process:
- the base station When it is determined that the base station releases the unlicensed spectrum, and monitors the release of the unlicensed spectrum by the base station The length of time, the release time indicating a time interval from the release of the unlicensed spectrum by the base station to re-acquisition of the unlicensed spectrum;
- the release time does not exceed the time threshold, suspending the data processing process attached to the unlicensed spectrum, and after the base station reacquires the unlicensed spectrum, recovering the data processing process; when the release time exceeds The time threshold terminates a data processing procedure attached to the unlicensed spectrum, and selects a licensed spectrum to restart a new data processing process or restarts a new data processing process after the base station reacquires the unlicensed spectrum .
- the processor determines that the base station releases the unlicensed spectrum, including:
- the processor determines that the base station releases the unlicensed spectrum when receiving the indication information of releasing the unlicensed spectrum sent by the base station;
- the processor detects that the base station releases the unlicensed spectrum according to parameters of the base station.
- the processor monitors, by the base station, a release time of the unlicensed spectrum, including:
- the processor starts a waiting time timer for recording the length of time that the base station releases the unlicensed spectrum, and when the waiting time timer does not time out, determining that the release time does not exceed the time threshold, when After the waiting time timer expires, determining that the release time exceeds the time threshold;
- the processor receives a release time of a specific unlicensed spectrum sent by the base station, and compares the received release time with a preset time threshold to determine whether the received release time exceeds the preset Time threshold
- the processor receives the release indication of the unlicensed spectrum sent by the base station, and calculates a release time of the unlicensed spectrum by the base station according to the release indication and a preset rule, and the calculated release time is A preset time threshold comparison is made to determine if the received release time exceeds the preset time threshold.
- the waiting time timer includes a deactivation timer
- the release time of the specific unlicensed spectrum includes at least one of the following times: the time when the unlicensed spectrum is occupied by other devices, the reserved time for the unlicensed spectrum to be used by other devices, The quiet time of the unlicensed spectrum of the system where the base station is located.
- the data processing procedure includes a hybrid automatic repeat request HARQ process;
- Data processing procedures attached to the unlicensed spectrum including:
- the processor performs at least one of the following operations of attaching to the unlicensed spectrum: suspending monitoring of a physical downlink control channel, suspending downlink receiving, suspending uplink transmission, reserving a HARQ buffer, suspending receiving downlink HARQ retransmission, and suspending receiving downlink HARQ feedback information, suspending transmission of uplink HARQ retransmission, and suspending transmission of uplink HARQ feedback information;
- the processor After the re-acquisition of the unlicensed spectrum by the base station, the processor recovers the data processing process, including:
- the processor After the base station re-acquires the unlicensed spectrum, the processor performs at least one of the following operations that are attached to the unlicensed spectrum: resume listening to the physical downlink control channel, resume downlink receiving, resume uplink sending, and resume receiving Downlink HARQ retransmission, resume receiving downlink HARQ feedback information, resume transmitting uplink HARQ retransmission, and resume transmitting uplink HARQ feedback information.
- the data processing procedure includes a hybrid automatic repeat request HARQ process, where the processor terminates Data processing procedures attached to the unlicensed spectrum, including:
- the processor performs a HARQ entity reset operation or performs a deactivation operation of a cell using the unlicensed spectrum
- the selecting the licensed spectrum to restart the new data processing process or restarting the new data processing process after the base station reacquires the unlicensed spectrum including:
- the processor selects the licensed spectrum to restart the new HARQ process or restarts the new HARQ process after the base station reacquires the unlicensed spectrum.
- the data processing procedure includes discontinuous reception of the DRX process
- the processor suspends a data processing process attached to the unlicensed spectrum, including:
- the processor performs at least one of the following operations of attaching to the unlicensed spectrum: maintaining normal operation of each DRX timer, suspending monitoring of a physical downlink control channel, suspending downlink receiving, and suspending uplink sending;
- the processor resumes processing the data. Cheng, including:
- the processor performs at least one of the following operations of attaching to the unlicensed spectrum: after the base station re-acquires the unlicensed spectrum, resumes listening to the physical downlink control channel, resumes downlink reception, and resumes uplink transmission.
- the data processing procedure includes Continuously receiving the DRX process
- the processor terminates a data processing process attached to the unlicensed spectrum, including:
- the processor performs at least one of the following operations attached to the unlicensed spectrum:
- the selecting the licensed spectrum to restart the new data processing process or restarting the new data processing process after the base station reacquires the unlicensed spectrum including:
- the processor selects the licensed spectrum to restart the new DRX process or maintains the ongoing DRX process of the licensed spectrum or restarts the new DRX process after the base station reacquires the unlicensed spectrum.
- the eighth possible implementation manner when the cell of the unlicensed spectrum and the cell of the licensed spectrum use the same DRX parameter configuration and DRX operation, When the processor terminates the data processing process attached to the unlicensed spectrum, the DRX timers are not stopped;
- the DRX timer is stopped.
- the data processing procedure includes an automatic retransmission request ARQ process
- the processor suspends a data processing process attached to the unlicensed spectrum, including:
- the processor performs at least one of the following operations attached to the unlicensed spectrum: suspending a reordering timer of the radio link control layer RLC, and suspending a polling retransmission timer;
- the processor After the processor re-acquires the unlicensed spectrum, the processor recovers the data processing process, including: After the base station re-acquires the unlicensed spectrum, the processor performs at least one of the following operations that are attached to the unlicensed spectrum: recovering a reordering timer of the radio link control layer, and After the sorting timer expires, the RLC status report is triggered; the polling retransmission timer is resumed, and after the polling retransmission timer expires, the RLC data unit with the polling bit set is triggered to retransmit or send a new RLC data unit.
- the data processing procedure includes an automatic retransmission request ARQ Process
- the processor terminates the data processing procedure attached to the unlicensed spectrum, including: the processor performing at least one of the following operations attached to the unlicensed spectrum: stopping the reordering timer, stopping the Polling retransmission timer;
- the selecting the licensed spectrum to restart the new data processing process or restarting the new data processing process after the base station reacquires the unlicensed spectrum including:
- the processor selects the licensed spectrum to restart the new ARQ process or restarts the new ARQ process after the base station re-acquires the unlicensed spectrum.
- the data processing procedure includes a random access procedure
- the processor suspending the data processing process attached to the unlicensed spectrum includes: the processor performing at least one of the following operations attached to the unlicensed spectrum: suspending a random access response window, suspending the competition Resolve the timer;
- the processor After the re-acquisition of the unlicensed spectrum by the base station, the processor recovers the data processing process, including:
- the processor After the base station re-acquires the unlicensed spectrum, the processor performs at least one of the following operations that are attached to the unlicensed spectrum: recovering the random access response window, and restoring the operation of the contention resolution timer.
- the processor terminates the data processing process attached to the unlicensed spectrum, including: the processor performing at least one of the following operations attached to the unlicensed spectrum: stopping random Accessing the response window and stopping waiting for the random access response message, stopping the contention resolution timer, and stopping waiting for the contention resolution message;
- the processor selects the licensed spectrum to restart a new data processing process or restarts the new data processing process after the base station re-acquires the unlicensed spectrum, including:
- the processor selects the licensed spectrum to restart the new random access procedure or restarts the new random access procedure after the base station re-acquires the unlicensed spectrum.
- the data processing procedure includes a radio resource management RRM measurement procedure; And a data processing process attached to the unlicensed spectrum, including: the processor suspending the RRM measurement process;
- the processor After the re-acquisition of the unlicensed spectrum by the base station, the processor recovers the data processing process, including:
- the processor resumes the RRM measurement process.
- the data processing procedure Including radio resource management RRM measurement process
- the processor terminates the data processing process attached to the unlicensed spectrum, including: the processor releasing the RRM measurement parameter;
- the processor selects the licensed spectrum to restart a new data processing process or restarts the new data processing process after the base station re-acquires the unlicensed spectrum, including:
- the processor selects the licensed spectrum to restart the new RRM measurement process or restarts the new RRM process after the base station reacquires the unlicensed spectrum.
- the data processing procedure includes a channel state information CSI measurement process; And a data processing procedure attached to the unlicensed spectrum, including: the processor suspending the CSI measurement process;
- the processor After the re-acquisition of the unlicensed spectrum by the base station, the processor recovers the data processing process, including:
- the processor resumes the CSI measurement process.
- the fifteenth possible implementation manner of the third aspect in the sixteenth possible implementation manner, the data processing process Including channel state information CSI measurement process;
- the processor terminates a data processing process attached to the unlicensed spectrum, including:
- the processor releases the CSI measurement parameter
- the processor selects the licensed spectrum to restart a new data processing process or restarts the new data processing process after the base station re-acquires the unlicensed spectrum, including:
- the processor selects the licensed spectrum to restart the new CSI measurement process or restarts the new CSI process after the base station reacquires the unlicensed spectrum.
- a fourth aspect of the invention provides a computer storage medium, the computer storage medium being storable for storing a program, the program being executed to include some or all of the steps of the method of the invention. It can be seen that, in some embodiments of the present invention, when the user equipment determines that the base station releases the unlicensed spectrum, the user equipment monitors the length of time that the base station releases the unlicensed spectrum, and the release time indication is Determining, by the base station, a time interval from releasing the unlicensed spectrum to re-acquiring the unlicensed spectrum; when the release time does not exceed a time threshold, the user equipment suspends a data processing procedure attached to the unlicensed spectrum, and in the After the base station re-acquires the unlicensed spectrum, the data processing process is resumed, thereby ensuring normal recovery of the communication process after re-acquiring the unlicensed spectrum; and, when the release time exceeds the time threshold, the user The device terminates the data processing process attached to the unlicensed spectrum, and selects the licensed spectrum to
- FIG. 1 is an implementation of a data processing method for releasing an unlicensed spectrum according to an embodiment of the present invention.
- Example flow diagram Example flow diagram
- FIG. 2 is a schematic structural diagram of an embodiment of a user equipment according to an embodiment of the present disclosure
- FIG. 3 is a schematic structural diagram of an embodiment of a user equipment according to an embodiment of the present disclosure
- FIG. 4 is a schematic structural diagram of an embodiment of a monitoring module according to an embodiment of the present invention.
- FIG. 5 is a schematic structural diagram of an embodiment of a user equipment according to an embodiment of the present invention. Specific lung
- the unlicensed spectrum is shared by many users, and these users may belong to different radio access technologies (RATs), such as LTE, wifi, Bluetooth, and the like.
- RATs radio access technologies
- Devices such as LTE, wifi, and Bluetooth that use unlicensed spectrum need to listen to whether the spectrum is idle before transmission, that is, "List before listening (LBT)" to avoid other users who are using unlicensed spectrum. interference.
- LBT List before listening
- the maximum occupancy time after the user obtains the unlicensed spectrum is also specified. It needs to be released after a certain period of time, idle for a certain period of time, and then restarts to compete for the unlicensed spectrum, thereby giving each user the opportunity to compete fairly and use the unlicensed spectrum.
- the LTE system and the wifi system are described in the case of unlicensed spectrum coexistence.
- the LTE system is a representative of a cellular system, and other cellular systems may also include UMTS, GSM, CDMA2000, etc.; wifi is a representative of a different system.
- the LTE base station can be generally divided into a micro base station (Pico eNB), a small base station (Micro or small eNB), or a macro base station (macro eNB) according to different transmission power and downlink coverage, which is further involved in the present invention.
- the base station may be various base stations in the above LTE system.
- the LTE system when the LTE system uses the unlicensed spectrum, there may be an unlicensed spectrum in the coverage area of the base station, such as the wifi system using the same frequency band.
- the common coverage area of the LTE system and the wifi system there may be co-channel interference, for example, when When the coverage of the LTE system and the wifi system overlap and the frequencies overlap, if the LTE system and the wifi system communicate in the respective systems at the same time in the overlapping frequency range, the same-frequency interference may be caused. Therefore, the LTE system and the wifi system need to cooperate between systems or the devices of each system share the unlicensed spectrum through detection and avoidance, so that each system can communicate normally. Therefore, there may be an LTE system or a wifi system according to an embodiment of the present invention.
- the system needs to release the unlicensed spectrum and re-competition and acquire the unlicensed spectrum after a period of idle time to maintain the sharing of the unlicensed spectrum of the LTE system and the wifi system.
- the related data processing after the unlicensed spectrum is released by the base station in the LTE system is taken as an example, and the processing flow after the unlicensed spectrum release of various systems is illustrated. Subsequent methods are equally applicable to other systems than LTE systems.
- 3GPP long term evolution advanced (CAR) carrier aggregation is performed by aggregating a plurality of consecutive or non-contiguous component carriers (CCs) Increase user peak data rate and system throughput.
- the aggregated component carrier includes one primary cell (PCell, Primary) and 0 to 5 secondary cells (SCdl, secondary cell), and supports a maximum of lOOMHz bandwidth.
- the PCell and the SCell may be co-site (collocate or co-site) or non-co-site, the latter being provided by the base station and the remote radio head (RRH), respectively, for PCell and SCell.
- the PCell is a cell when a user equipment (UE, user equipment) performs a random access procedure initial access system or performs a handover procedure to access the target base station.
- PCell also provides security and non-access stratum (NAS, Non-Access Stratum) signaling transport.
- SCdl mainly provides additional wireless resources for data transmission.
- LTE-A can utilize unlicensed spectrum through CA technology. Therefore, in some of the following embodiments, the unlicensed spectrum will be described by taking SCdl as an example.
- FIG. 1 is a schematic flowchart of an embodiment of a data processing method after releasing an unlicensed spectrum according to the present invention. As shown in FIG. 1, it may include:
- Step S110 When the user equipment determines that the base station releases the unlicensed spectrum, the user equipment monitors the length of time that the base station releases the unlicensed spectrum, and the release time indicates that the base station releases the unlicensed spectrum to re-acquire The time interval of the unlicensed spectrum.
- Step S111 when the release time does not exceed the time threshold, the user equipment suspends the data processing process attached to the unlicensed spectrum, and after the base station re-acquires the unlicensed spectrum, restores the data processing process. .
- Step S112 when the release time exceeds the time threshold, the user equipment terminates the data processing procedure attached to the unlicensed spectrum, and selects the licensed spectrum to restart a new data processing process or reacquires the base station. After the unlicensed spectrum is described, the new data processing process is restarted.
- the user equipment determines that the base station is released.
- the unlicensed spectrum is determined by, but not limited to, the following methods:
- the user equipment detects that the base station releases the unlicensed spectrum according to parameters of the base station.
- the base station and the user equipment (UE) communicate through the radio resource of the SCdl. After the communication is released for a period of time, the base station releases the unlicensed spectrum, and the base station sends the unlicensed spectrum release indication information to the UE, where the indication information can pass through the physical downlink control channel (including a physical downlink control channel (PDCCH) or an enhanced physical medium.
- the enhanced physical downlink control channel (EPDCCH) is transmitted or transmitted through a medium access control control element (MAC CE).
- MAC CE medium access control control element
- the UE when the UE receives the indication that the base station sends the unlicensed spectrum through the PDCCH or the EPDCCH or the MAC CE, it can determine that the base station releases the unlicensed spectrum. Alternatively, the UE detects that the base station releases the unlicensed spectrum by measuring the LTE reference signal.
- step S110 the user equipment monitors how long the base station releases the unlicensed spectrum, including but not limited to the following manners:
- Mode 1 The user equipment starts a waiting time timer for recording the length of time that the base station releases the unlicensed spectrum.
- the waiting time timer does not expire, it is determined that the release time does not exceed the time threshold.
- the waiting time timer expires, it is determined that the release time exceeds the time threshold.
- the UE determines that the base station releases the unlicensed spectrum, it starts a waiting time timer (which can be recorded as: wait-timer) for recording the length of time that the base station releases the unlicensed spectrum. If the UE receives the indication of re-acquiring the unlicensed spectrum sent by the base station, or the UE does not detect that the base station re-acquires the unlicensed spectrum, the unlicensed spectrum is still in the release period.
- wait-timer wait-timer
- the base station Before the base station reacquires the unlicensed spectrum and indicates the UE or the UE re-detects that the base station acquires the unlicensed spectrum (indicating that the release time of the unlicensed spectrum continues), if the waiting time timer has not expired, the release is determined. The time does not exceed the time threshold; and when the base station reacquires the unlicensed spectrum and indicates the UE or the UE re-detects the base station acquisition Before the unlicensed spectrum (indicating that the release time of the unlicensed spectrum continues), if the waiting timer expires, it is determined that the release time exceeds the time threshold. In this manner, the timeout point of the waiting timer is the time threshold.
- the waiting time timer may be a separate timer, or reuse a prior art deactivation timer (sCdlDeactivationTimer), and the UE may receive the release of the unlicensed spectrum indication by the base station or detect the unlicensed spectrum release by itself. Or restart the deactivation timer, or continue to maintain the deactivation timer if the deactivation timer has been run; determine that the release time does not exceed the time threshold before the deactivation timer expires, and determine when the deactivation timer expires. The release time exceeds the time threshold.
- Manner 2 The user equipment receives a release time of a specific unlicensed spectrum sent by the base station, and compares the received release time with a preset time threshold to determine whether the received release time exceeds the preset Time threshold.
- the release time of the specific unlicensed spectrum includes at least one of the following times: the time when the unlicensed spectrum is occupied by other devices (for example, the base station detects that the high priority device, such as the radar, is not authorized.
- the time when the radar occupies the unlicensed spectrum is sent to the UE, and the interval period of release and acquisition of the unlicensed spectrum (for example, the period information may be a regular subframe pattern information, indicating that the information is released to the next Obtaining a time interval between spectrums at a time, the law is periodic.
- the period is determined by negotiation between systems sharing unlicensed spectrum, and the unlicensed spectrum is reserved for use by other devices (for example, The time-information (RTS, request to send) or the time information contained in the CTS (clear to send) frame sent by the device of the different system in the manner of a network configuration vector (NAV)
- the quiet time of the unlicensed spectrum of the system where the base station is located (this silent time means that the LTE system does not send any information. In order to make room for other systems compete spectrum, in the meantime, other systems may not occupy or occupied spectrum spectrum.).
- the user equipment can also directly receive a request to send (RTS, request to send) or clear to send (CTS, clear to send) frame by using a network configuration vector (NAV, Net Allocation Vector).
- RTS request to send
- CTS clear to send
- NAV Net Allocation Vector
- Mode 3 The user equipment receives a release indication of the unlicensed spectrum sent by the base station, and calculates a release time of the unlicensed spectrum by the base station according to the release indication and a preset rule, and the calculated release time is Presetting a time threshold comparison to determine whether the received release time exceeds the preset time threshold (eg, the base station detects a high priority device such as radar occupancy).
- the UE sends a special release indication to the UE, or the release indication includes different system type information, and the UE knows that it needs to be released for a long time according to the spectrum regulations, for example, at least 2 hours.
- the data processing procedure of the present invention may include a hybrid automatic repeat request (HARQ) process; then, in step S111, the user equipment suspends the data processing procedure attached to the unlicensed spectrum, including: the user equipment performs Having at least one of the following operations of the unlicensed spectrum: suspending monitoring of the physical downlink control channel, suspending downlink reception, suspending uplink transmission, retaining the HARQ buffer, suspending receiving downlink HARQ retransmission, suspending receiving downlink HARQ feedback information, and suspending Sending uplink HARQ retransmission and suspending transmitting uplink HARQ feedback information;
- HARQ hybrid automatic repeat request
- the downlink receiving includes, but is not limited to, a PDCCH, a downlink downlink transport block (TB) on a physical downlink shared channel (PDSCH), and a physical hybrid automatic retransmission indicator channel (PHICH, physical HARQ indication channel).
- a PDCCH a downlink downlink transport block (TB) on a physical downlink shared channel (PDSCH)
- PDSCH physical downlink shared channel
- PHICH physical hybrid automatic retransmission indicator channel
- HARQ feedback information acknowledgment information ACK or non-acknowledgement information NACK, primary synchronization signal (PSS), secondary synchronization reference signal (SSS, cell synchronization signal), cell reference signal (CRS, cell reference signal), channel state reference Signal (CSI-RS, channel state information reference signal), DMRS (demodulation reference signal), and main channel information block ( ⁇ , master information block) on the broadcast channel (BCH, broadcast channel) System information block Information related to the multimedia broadcast multicast system (MBMS).
- PSS primary synchronization signal
- SSS secondary synchronization reference signal
- CRS cell reference signal
- CSI-RS channel state reference Signal
- DMRS demodulation reference signal
- main channel information block ⁇ , master information block
- BCH broadcast channel
- BCH broadcast channel
- MBMS multimedia broadcast multicast system
- the uplink control includes, but is not limited to, transmitting uplink control information (UCI, uplink control information) on a physical uplink control channel (PUCCH) or physical uplink shared channel (PUSCH). Transmitting a transport block on the PUSCH, transmitting a sounding reference signal (SRS), demodulating the reference signal DMRS, a preamble on a physical random access channel (PRACH), and the like; wherein the UCI
- the information includes but is not limited to: HARQ feedback information acknowledgement information ACK or non-confirmation information NACK, channel quality indication (CQI, channel quality indication), and PMI (Pre-coding matrix Indication) (RI, ranking indication), pre-coded type (PTI), etc.
- the UE may not transmit the HARQ feedback information during the LTE release of the unlicensed spectrum, and does not monitor the physical downlink control channel PDCCH to receive the downlink HARQ. Retransmission.
- the UE can reserve the redundancy version (RV) of the received downlink transport block in the downlink HARQ soft buffer, and the base station sends the downlink transport block after the LTE reacquires the unlicensed spectrum. Redundant version of HARQ retransmission.
- RV redundancy version
- the UE may be in the LTE.
- a subframe that needs to receive a PHICH during the release of the unlicensed spectrum does not receive the PHICH, and considers the information on the PHICH to be an ACK.
- the UE retains the data in the uplink HARQ buffer, and is used for performing uplink HARQ retransmission according to the uplink grant (UL grant) of the base station after the LTE reacquires the unlicensed spectrum, or generating a new uplink transport block according to the uplink grant of the base station. .
- the UE may release the unlicensed spectrum during LTE.
- a subframe that requires HARQ retransmission on the PUSCH does not perform uplink HARQ retransmission.
- the UE reserves the data in the uplink HARQ buffer, and is used for adaptive uplink HARQ retransmission according to the uplink grant (UL grant) of the base station after re-acquiring the unlicensed spectrum by the LTE, or performing non-adaptive HARQ retransmission. .
- the data processing procedure of the present invention may include a hybrid automatic repeat request HARQ process. Then, in step S111, the user equipment resumes the data processing process after the base station re-acquires the unlicensed spectrum, including:
- the user equipment After the user equipment re-acquires the unlicensed spectrum, the user equipment performs at least one of the following operations that are attached to the unlicensed spectrum: resume listening to the physical downlink control channel, resume downlink reception, resume uplink transmission, and resume receiving Downlink HARQ retransmission, resume receiving downlink HARQ feedback information, resume transmitting uplink HARQ retransmission, and resume transmitting uplink HARQ feedback information.
- the UE when the length of the release time of the unlicensed spectrum is monitored by the waiting timer, if the UE receives the unlicensed spectrum acquisition indication or the synchronization indication information sent by the base station before the waiting time timer expires, or the UE detects the LTE re After acquiring the unlicensed spectrum, the UE stops the waiting time timer, and the UE can monitor the PDCCH, perform downlink receiving and uplink sending, continue or continue HARQ before releasing the unlicensed spectrum.
- the operation includes, for example, receiving a downlink HARQ retransmission or a new TB block sent by the base station, receiving an uplink grant sent by the base station, performing uplink HARQ retransmission, or generating a new TB block for uplink transmission or performing uplink non-adaptive HARQ retransmission.
- the "pause” described in the embodiment of the present invention may be replaced by a description of “suspend”, “temporary cancellation”, “temporarily not performed”, etc., and the expressions thereof are all temporarily suspended from the unauthorized.
- the data processing of the spectrum but retaining the data processing that has already taken place, so that subsequent data processing can continue on the process that has already taken place.
- the "recovery” described in the embodiment of the present invention may be replaced by a description of "continue”, “continuation”, etc., and the meanings thereof are all uncompleted data processing processes when the suspension is continued.
- the data processing procedure of the present invention may include a hybrid automatic repeat request (HARQ) process; then, in step S112, the user equipment terminates the data processing procedure attached to the unlicensed spectrum, including: the user equipment performing HARQ A physical reset operation or a deactivation operation of a cell using the unlicensed spectrum.
- HARQ hybrid automatic repeat request
- the HARQ entity reset operation of the SCdl includes but is not limited to the following: Clear all downlink HARQ process soft buffers;
- the next received transport block is considered to be the first transport block transmission on the HARQ process
- timeAlignmentTimer The time alignment timer (timeAlignmentTimer) is timed out, the uplink HARQ buffer is cleared, and the radio resource control layer (RRC) is notified to release the SRS resources of the SCdl on the unlicensed spectrum.
- RRC radio resource control layer
- SCdl deactivation related operations include:
- the data processing procedure of the present invention may include a hybrid automatic repeat request HARQ process; then, in step S112, the user equipment performs a HARQ entity reset operation or performs a deactivation operation of a cell using the ⁇ restricted spectrum;
- the selecting the licensed spectrum to restart the new data processing process or restarting the new data processing process after the base station reacquires the unlicensed spectrum including:
- the user equipment selects the licensed spectrum to restart the new HARQ process or restarts the new HARQ process after the base station reacquires the unlicensed spectrum.
- the UE may select a PCell or SCdl on the licensed spectrum to send a MAC CE that has not been successfully sent before the LTE release of the unlicensed spectrum; the MAC CE includes but is not limited to a buffer status report (BSR).
- BSR buffer status report
- Upstream MAC CE such as power headroom report (PHR).
- PHR power headroom report
- the other transport block TB that has not been successfully transmitted before the LTE releases the unlicensed spectrum is responsible for retransmission by the radio link control layer (RLC) or may alternatively generate a new transport block for PCdl or SCdl on the licensed spectrum.
- RLC radio link control layer
- the data processing procedure of the present invention may include discontinuously receiving the DRX process.
- the user equipment suspends the data processing process attached to the unlicensed spectrum, including: the user equipment performing the attachment Performing at least one of the following operations of the unlicensed spectrum: maintaining normal operation of each DRX timer (continuing operation and stopping after timeout), maintaining normal operation of each DRX timer but the user equipment does not count or count (continue The time of running but the DRX timer is extended by the length of the unlicensed spectrum release period, the physical downlink control channel is suspended, the downlink reception is suspended, and the uplink transmission is suspended.
- the DRX timer in the embodiment of the present invention may include: a duration timer (onDurationTimer). a discontinuous reception inactivity timer (drx-InactivityTimer). a discontinuous reception retransmission timer (drx-RetransmissionTimer) ), hybrid automatic repeat request loopback time timer (HARQ RTT Timer), discontinuous reception short cycle timer (drxShortCycleTimer), and so on.
- the physical downlink control channel is suspended, the downlink receiving is suspended, and the temporary suspension is temporarily suspended.
- the processing method of stopping uplink transmission and the like refers to the related processing method for HARQ, and details are not described herein.
- the data processing procedure of the present invention may include the discontinuous reception of the DRX process. Then, in step S111, the user equipment resumes the data processing process after the base station re-acquires the unlicensed spectrum, including:
- the user equipment performs at least one of the following operations on the unlicensed spectrum: after the base station re-acquires the unlicensed spectrum, resumes listening to the physical downlink control channel, resumes downlink reception, and resumes uplink transmission.
- the processing manner of recovering the physical downlink control channel, recovering the downlink receiving, and recovering the uplink sending in the embodiment is referred to the related processing manner of the HARQ, and details are not described herein.
- the "pause” described in the embodiment of the present invention may be replaced by a description of “suspend”, “temporary cancellation”, “temporarily not performed”, etc., and the expressions thereof are all temporarily suspended from the unauthorized.
- the data processing of the spectrum but retaining the data processing that has already taken place, so that subsequent data processing can continue on the process that has already taken place.
- the "recovery” described in the embodiment of the present invention may be replaced by a description of "continue”, “continuation”, etc., and the meanings thereof are all uncompleted data processing processes when the suspension is continued.
- the data processing procedure of the present invention may include discontinuously receiving the DRX process.
- the user equipment terminates the data processing procedure attached to the unlicensed spectrum, including: the user equipment performing the attaching to the Performing at least one of the following operations of the unlicensed spectrum: performing a HARQ entity reset operation, performing a deactivation operation of a cell using the unlicensed spectrum, and stopping the DRX timers;
- the processing method of performing the HARQ entity reset operation and performing the deactivation operation of the cell using the unlicensed spectrum refers to the related processing manner of the HARQ, and details are not described herein.
- the DRX timers are stopped.
- the SCdl on the unlicensed spectrum when the SCdl on the unlicensed spectrum performs DRX operations independent of PCell and SCdl on the licensed spectrum, that is, the DRX parameter configuration on the SCdl and the UE in the SCdl
- the active time on is independent of the DRX parameter configuration and activity time of the carrier on the licensed spectrum.
- the DRX timers are not stopped.
- the SCdl on the unlicensed spectrum performs the common DRX operation (common DRX) with the PCdl and the SCell on the licensed spectrum
- the common DRX operation in the prior art refers to the DRX parameter configuration on each SCdl and the DRX parameter configuration on the reused PCdl.
- the activity time rule is the same on each SCell and PCdl, that is, each SCdl and PCdl in the active state are both in active time or inactive time. o
- the UE pairs The SCdl on the unlicensed spectrum performs a deactivation operation or a HARQ reset operation, but does not stop each DRX timer, because the normal operation of the PCdl and other SCell DRX operations on the licensed spectrum also depends on the operation or stop of these timers.
- the DRX processing method provided in this embodiment may enable the UE to perform corresponding processing according to the length of the unlicensed spectrum release time, such as processing the DRX timer and monitoring the PDCCH, so that the unlicensed spectrum release period and the LTE reacquisition are not authorized.
- the DRX operation after the spectrum can be smoothly carried out or continued to facilitate better power saving effect when the UE works in the unlicensed spectrum.
- the data processing procedure of the embodiment of the present invention includes an automatic retransmission request ARQ process. Then, in step S111, the user equipment pauses the data processing process attached to the unlicensed spectrum, including:
- the user equipment performs at least one of the following operations attached to the unlicensed spectrum: suspending a reordering timer of the radio link control layer RLC, and suspending a polling retransmission timer;
- the RLC status report (RLC status report) and the RLC protocol data unit (PDU) with the polling bit (poll) are set.
- the information such as the RLC PDU that needs to be retransmitted can be sent on the PCdl or SCell on the licensed spectrum or the SCdl on the unlicensed spectrum. Therefore, when the LTE temporarily releases the unlicensed spectrum, the UE and the base station can naturally be the PCdl on the licensed spectrum. Or send the above information on SCdl.
- the UE and the base station may be performed by a cell provided by another base station.
- the CA may be performed between the base stations, the primary base station (MeNB, master eNB) provides PCell and 0 to multiple SCdl, and the secondary base station (SeNB, secondary eNB) provides one or more.
- the SCell if the SeNB is configured with the uplink, the SeNB needs to configure the PUCCH, which is the primary cell on the SeNB.
- the data radio bearer on the user plane can be located only on the SeNB, and communicates through the S1-U interface of the SeNB and the serving gateway (SGW); it can be split into two logical channels (logical Channel)
- the data is transmitted through the radio interface between the MeNB and the UE and the radio interface and the UE of the SeNB and the UE, and communicates with the network through the S1-U interface of the MeNB and the SGW. If only one primary cell is provided on the SeNB, and the primary cell is on the unlicensed spectrum, the LTE process needs to perform corresponding processing on the ARQ process after releasing the unlicensed spectrum.
- the UE receives one or more downlink RLC protocol data units (PDUs) from the SeNB, but does not have time to send the RLC status report (RLC status report) feedback RLC PDU to the base station.
- PDUs downlink RLC protocol data units
- RLC status report RLC status report
- Receiving status including information that the RLC PDU receives a successful ACK and/or receives a failed NACK; and/or the UE sends one or more RLC PDUs to the SeNB, but has not received the RLC status report sent by the SeNB, or the UE has received
- the RLC status report sent by the SeNB is reached, but the RLC PDU retransmission is performed in the future. In these cases, the ARQ processing problem after the unlicensed spectrum release is involved.
- step S111 for the RLC receiving entity, the UE suspends and suspends the reordering timer of the RLC layer (in the specific implementation, the suspension may be suspended or continued) Running the timer but not counting the timer); for the RLC transmitting entity, if the UE has sent the RLC PDU with the Poll bit set to the SeNB and starts the poll retransmit timer, the poll retransmission timer is suspended.
- the base station processes the relevant timer according to the method corresponding to the UE.
- the data processing procedure of the embodiment of the present invention includes an automatic retransmission request ARQ process. Then, in step S111, the user equipment resumes the data processing process after the base station re-acquires the unlicensed spectrum, including :
- the user equipment After the user equipment re-acquires the unlicensed spectrum, the user equipment performs at least one of the following operations that are attached to the unlicensed spectrum: recovering a reordering timer of the radio link control layer, and After the sorting timer expires, the RLC status report is triggered; the polling retransmission timer is resumed, and after the polling retransmission timer expires, the RLC data unit with the polling bit set is triggered to retransmit or send a new RLC data unit.
- the data processing procedure of the embodiment of the present invention includes an automatic retransmission request ARQ process. Then, in step S112, the user equipment terminates the data processing process attached to the unlicensed spectrum, including:
- the user equipment performs at least one of the following operations attached to the unlicensed spectrum: stopping the reordering timer, stopping the polling retransmission timer;
- the data processing procedure of the embodiment of the present invention includes an automatic retransmission request ARQ process. Then, in step S112, the selecting the licensed spectrum restarts a new data processing process or after the base station reacquires the unlicensed spectrum. , restart the new data processing process, including:
- the user equipment selects the licensed spectrum to restart the new ARQ process or restarts the new ARQ process after the base station reacquires the unlicensed spectrum.
- the UE may select the PCdl or SCell on the licensed spectrum provided by the MeNB to send and/or receive information about the ARQ.
- the ARQ method of the unlicensed spectrum release provided in this embodiment can prevent the ARQ process of the RLC layer from being performed normally due to the release of the unlicensed spectrum, thereby avoiding TCP retransmission due to the large ARQ retransmission delay, thereby saving Spectrum resources increase system throughput.
- the data processing process in the embodiment of the present invention includes a random access process
- step S111 the user equipment suspends the data processing process attached to the unlicensed spectrum, including:
- the user equipment performs at least one of the following operations of attaching to the unlicensed spectrum: suspending a random access response window (ie, suspending counting of a subframe of a random access response (RAR) window), Suspending the contention timer (ie, suspending the counting of the contention timer); specifically, if the UE is waiting for a random access response (RAR), the UE suspends the RAR window, that is, Suspending the counting of the subframes of the RAR window; if the UE is waiting for the contention resolution (CR) message, that is, the random access procedure message 4 (msg4), and starting the contention resolution timer, the UE temporarily The contention timer is suspended, that is, the count of the timer is suspended.
- CR contention resolution
- the data processing process in the embodiment of the present invention includes a random access process
- step S111 after the user equipment reacquires the unlicensed spectrum, the user equipment Restoring the data processing process, including:
- the user equipment After the user equipment re-acquires the unlicensed spectrum, the user equipment performs at least one of the following operations that are attached to the unlicensed spectrum: recovering the random access response window (ie, continuing to count from the pause point), recovering The competition resolves the running of the timer (ie continues to count from the pause point).
- the data processing process of the embodiment of the present invention includes a random access process. Then, in step S112, the user equipment terminates the data processing process attached to the unlicensed spectrum, including:
- the user equipment performs at least one of the following operations of attaching to the unlicensed spectrum: stopping the random access response window and stopping waiting for the random access response message, stopping the contention resolution timer, and stopping the contention resolution message;
- the data processing procedure of the embodiment of the present invention includes a random access procedure. Then, in step S112, the user equipment selects the licensed spectrum to restart a new data processing process or after the base station reacquires the unlicensed spectrum. , restart the new data processing process, including:
- the user equipment selects the licensed spectrum to restart the new random access procedure or restarts the new random access procedure after the base station reacquires the unlicensed spectrum.
- the UE may re-trigger the random access procedure after the LTE reacquires the unlicensed spectrum, and may be triggered by the eNB through the PDCCH or the MAC layer of the UE by using the existing technology.
- the LTE does not release the unlicensed spectrum, and continues the random access process. Until the random access procedure is completed; or the UE only waits for the non-contention free random access procedure to wait until the end of the RAR window and the random access completes or fails before releasing the unlicensed spectrum; or if the random access is this time
- the unlicensed spectrum is released when the incoming attempt fails, and the random access procedure is triggered after the LTE reacquires the unlicensed spectrum resources.
- the priority of the random access procedure is considered to be higher than the release of the unlicensed spectrum.
- the data processing procedure of the embodiment of the present invention includes a radio resource management (RRM) measurement
- step S111 the user equipment suspends the data processing process attached to the unlicensed spectrum, including:
- the user equipment suspends the RRM measurement process; in a specific implementation, the RRM measurement is based on The CRS or CSI-RS or DMRS-based reference signal received power (RSRP, reference signal received power) and/or reference signal received quality RSRQ (reference signal received quality) are measured.
- the base station configures the UE for RRM measurement on the SCell on the unlicensed spectrum.
- step S111 the user equipment resumes the data processing process after the base station re-acquires the unlicensed spectrum, including:
- the user equipment resumes the RRM measurement process.
- step S112 the user equipment terminates the data processing process attached to the unlicensed spectrum, including:
- the user equipment releases the RRM measurement parameter
- the user equipment selects the licensed spectrum to restart a new data processing process or restarts the new data processing process after the base station re-acquires the unlicensed spectrum, including:
- the user equipment selects the licensed spectrum to restart the new RRM measurement process or restarts the new RRM process after the base station reacquires the unlicensed spectrum.
- the data processing procedure of the embodiment of the present invention includes channel state information (CSI) measurement;
- CSI channel state information
- step S111 the user equipment suspends the data processing procedure attached to the unlicensed spectrum, including: the user equipment suspending the data processing process attached to the unlicensed spectrum, the method includes: the user equipment suspending the CSI measurement process;
- step S111 after the user equipment re-acquires the unlicensed spectrum, the user equipment recovers the data processing process, including:
- the user equipment resumes the CSI measurement process.
- step S112 the user equipment terminates the data processing process attached to the unlicensed spectrum, including:
- the user equipment selects the licensed spectrum to restart a new data processing process or restarts the new data processing process after the base station re-acquires the unlicensed spectrum, including:
- the user equipment selects the licensed spectrum to restart the new CSI measurement process or restarts the new CSI process after the base station reacquires the unlicensed spectrum.
- the CSI measurement in the embodiment of the present invention is based on CRS or CSI-RS or DMRS-based channel state measurement, including CQI, PMI, RI, ⁇ , and the like.
- the base station configures the pair for the UE.
- the SCell on the unlicensed spectrum performs CSI measurements.
- the embodiment of the present invention may always perform: suspending a data processing procedure attached to the unlicensed spectrum, and re-acquiring the unlicensed spectrum at the base station. Thereafter, the data processing process is resumed; or, the user equipment is always executed: the user equipment terminates the data processing procedure attached to the unlicensed spectrum, and selects the licensed spectrum to restart a new data processing process or reacquires at the base station. After the unlicensed spectrum is described, the new data processing process is restarted. Instead of following the length of the unlicensed spectrum release time, different processing schemes are used.
- the user equipment when the user equipment determines that the base station releases the unlicensed spectrum, the user equipment monitors the length of time that the base station releases the unlicensed spectrum, and the release time indication is Determining, by the base station, a time interval from releasing the unlicensed spectrum to re-acquiring the unlicensed spectrum; when the release time does not exceed a time threshold, the user equipment suspends a data processing procedure attached to the unlicensed spectrum, and in the After the base station re-acquires the unlicensed spectrum, the data processing process is resumed, thereby ensuring normal recovery of the communication process after re-acquiring the unlicensed spectrum; and, when the release time exceeds the time threshold, the user The device terminates the data processing process attached to the unlicensed spectrum, and selects the licensed spectrum to restart a new data processing process or restarts the new data processing process after the base station reacquires the unlicensed spectrum, thereby avoiding Delayed redundant retransmissions waste wireless resources and
- embodiments of the present invention disclose user equipment that can be used to implement the processes of the above method embodiments.
- the schematic diagram of the structure of the user equipment in the embodiment of the present invention is described below with reference to FIG.
- FIG. 2 is a schematic structural diagram of an embodiment of a User Equipment (UE) according to the present invention. As shown in FIG. 2, it may include: a monitoring module 21, a first processing module 22, and a second processing module 23, wherein: the monitoring module 21 is configured to: when the user equipment determines that the base station releases the unlicensed spectrum, monitor the base station pair a length of a release time of the unlicensed spectrum, where the release time indicates a time interval from the release of the unlicensed spectrum to the reacquisition of the unlicensed spectrum by the base station;
- the monitoring module 21 is configured to: when the user equipment determines that the base station releases the unlicensed spectrum, monitor the base station pair a length of a release time of the unlicensed spectrum, where the release time indicates a time interval from the release of the unlicensed spectrum to the reacquisition of the unlicensed spectrum by the base station;
- the first processing module 22 is configured to: when the release time monitored by the monitoring module 21 does not exceed a time threshold, suspend a data processing process attached to the unlicensed spectrum, and re-acquire the unlicensed spectrum at the base station After, restoring the data processing process;
- a second processing module 23 configured to: when the monitoring module 21 monitors, the release time exceeds the And a time threshold, terminating the data processing procedure attached to the unlicensed spectrum, and selecting to authorize the spectrum to restart a new data processing process or restarting the new data processing process after the base station reacquires the unlicensed spectrum.
- the user equipment in the embodiment of the present invention may further include a release determining module 20, configured to determine, when receiving the indication information of releasing the unlicensed spectrum sent by the base station, The base station releases the unlicensed spectrum, or detects that the base station releases the unlicensed spectrum according to the parameters of the base station.
- a release determining module 20 configured to determine, when receiving the indication information of releasing the unlicensed spectrum sent by the base station, The base station releases the unlicensed spectrum, or detects that the base station releases the unlicensed spectrum according to the parameters of the base station.
- the base station and the user equipment (UE) communicate through the radio resource of the SCdl.
- the base station After the communication is released for a period of time, the base station releases the unlicensed spectrum, and the base station sends the unlicensed spectrum release indication information to the UE, where the indication information can pass through the physical downlink control channel (including a physical downlink control channel (PDCCH) or an enhanced physical medium.
- the downlink physical downlink control channel (EPDCCH) is transmitted or transmitted through a medium access control control element (MAC CE).
- MAC CE medium access control control element
- the release determination module 20 of the UE detects that the base station releases the unlicensed spectrum by measuring the LTE reference signal.
- the monitoring module 21 may include any one of a first monitoring module 211, a second monitoring module 212, and a third monitoring module 213.
- the first monitoring module 211 is configured to start a waiting time timer for recording a length of time that the base station releases the unlicensed spectrum, and when the waiting time timer does not time out, determining that the release time does not exceed the time threshold And after the waiting time timer expires, determining that the release time exceeds the time threshold.
- the LTE-A system is still used as an example. After the UE determines that the base station releases the unlicensed spectrum, the first monitoring module 211 starts a waiting time timer (which can be recorded as: wait-timer) for recording the base station to be unauthorized.
- the length of the release time of the spectrum if the UE receives the indication of re-acquiring the unlicensed spectrum sent by the base station, or the UE does not detect that the base station reacquires the unlicensed spectrum, the unlicensed spectrum is still in the release period.
- the waiting time timer may be a separate timer, or reuse a prior art deactivation timer.
- the UE may start or restart the deactivation timer after receiving the release of the unlicensed spectrum indication by the base station or detecting the unlicensed spectrum release by itself, or continue to maintain the deactivation timer if the deactivation timer has been run; Before the deactivation timer expires, it is determined that the release time does not exceed the time threshold. When the deactivation timer expires, it is determined that the release time exceeds the time threshold.
- the second monitoring module 212 is configured to receive a release time of the specific unlicensed spectrum sent by the base station, and compare the received release time with a preset time threshold to determine whether the received release time exceeds the advance Set the time threshold.
- the release time of the specific unlicensed spectrum includes at least one of the following times: the time when the unlicensed spectrum is occupied by other devices (for example, the base station detects that the high-priority device, such as the radar, is not authorized.
- the time when the radar occupies the unlicensed spectrum is sent to the UE, and the period of the unlicensed spectrum is released and acquired (for example, the period information may be a regular subframe pattern information, indicating that the information is released to the next).
- the period information may be a regular subframe pattern information, indicating that the information is released to the next
- the time interval between the spectra is acquired once, the law is periodic.
- the period is determined by negotiation between systems sharing the unlicensed spectrum, and the unlicensed spectrum is reserved for use by other devices (for example, The time-information (RTS, request to send) or the time information contained in the CTS (clear to send) frame sent by the device of the different system in the manner of a network configuration vector (NAV)
- the quiet time of the unlicensed spectrum of the system where the base station is located (this silent time means that the LTE system does not send any information, Left to other systems the opportunity to compete spectrum, in the meantime, other systems may or may not occupy the spectrum occupied spectrum.).
- the user equipment can also directly receive a request to send (RTS, request to send) or clear to send (CTS, clear to send) frame by using a network configuration vector (NAV, Net Allocation Vector).
- RTS request to send
- CTS clear to send
- NAV Net Allocation Vector
- the third monitoring module 213 is configured to receive a release indication of the unlicensed spectrum sent by the base station, and calculate a release time of the unlicensed spectrum by the base station according to the release indication and a preset rule, and release the calculated release The time is compared with a preset time threshold to determine whether the received release time exceeds the preset time threshold (for example, when the base station detects that the high priority device, such as the radar, occupies the unlicensed spectrum, sends a special to the UE. Release instruction, or release indication contains a different For the type information, the UE knows that it needs to be released for a long time according to the spectrum regulations, for example, at least 2 hours. )
- the data processing process of the present invention includes a hybrid automatic repeat request (HARQ process); the first processing module 22 is specifically configured to: when the release time monitored by the monitoring module 21 does not exceed a time threshold, Performing at least one of the following operations of attaching to the unlicensed spectrum: suspending listening to the physical downlink control channel, suspending downlink receiving, suspending uplink sending, reserving HARQ buffer, suspending receiving downlink HARQ retransmission, suspending receiving downlink HARQ feedback information, Suspending the transmission of the uplink HARQ retransmission and suspending the transmission of the uplink HARQ feedback information; and, after the base station re-acquisitions the unlicensed spectrum, performing at least one of the following operations attached to the unlicensed spectrum: Resuming the monitoring physical downlink control Channel, resume downlink reception, resume uplink transmission, resume receiving downlink HARQ retransmission, resume receiving downlink HARQ feedback information, resume transmitting uplink HARQ retransmission, and resume transmitting uplink
- the downlink receiving includes, but is not limited to, a PDCCH, a downlink downlink transport block (TB) on a physical downlink shared channel (PDSCH), and a physical hybrid automatic retransmission indicator channel (PHICH, physical HARQ indication channel).
- a PDCCH a downlink downlink transport block (TB) on a physical downlink shared channel (PDSCH)
- PDSCH physical downlink shared channel
- PHICH physical hybrid automatic retransmission indicator channel
- HARQ feedback information acknowledgment information ACK or non-acknowledgement information NACK, primary synchronization signal (PSS), secondary synchronization reference signal (SSS, cell synchronization signal), cell reference signal (CRS, cell reference signal), channel state reference Signal (CSI-RS, channel state information reference signal), DMRS (demodulation reference signal), and main channel information block ( ⁇ , master information block) on the broadcast channel (BCH, broadcast channel) System information block Information related to the multimedia broadcast multicast system (MBMS).
- PSS primary synchronization signal
- SSS secondary synchronization reference signal
- CRS cell reference signal
- CSI-RS channel state reference Signal
- DMRS demodulation reference signal
- main channel information block ⁇ , master information block
- BCH broadcast channel
- BCH broadcast channel
- MBMS multimedia broadcast multicast system
- the uplink control includes, but is not limited to, transmitting uplink control information (UCI, uplink control information) on a physical uplink control channel (PUCCH) or physical uplink shared channel (PUSCH). Transmitting a transport block on the PUSCH, transmitting a sounding reference signal (SRS), demodulating the reference signal DMRS, a preamble on a physical random access channel (PRACH), and the like; wherein the UCI
- the information includes but is not limited to: HARQ feedback information acknowledgement information ACK or non-acknowledgement information NACK, channel status indication (CQI, channel The quality indication), the pre-coding matrix Indication, the RI, ranking indication, the PTI, the precoding type indication, and the like.
- the UE fails to receive the downlink transport block TB before the LTE releases the unlicensed spectrum, and the UE sends the HARQ feedback information ACK or NACK on the physical uplink control channel PUCCH or the physical uplink shared channel PUSCH in the future, the LTE releases the unlicensed spectrum.
- the UE may not transmit HARQ feedback information, and does not monitor the physical downlink control channel PDCCH to receive downlink HARQ retransmission.
- the UE can reserve the redundancy version (RV) of the received downlink transport block in the downlink HARQ soft buffer, and the base station sends the downlink transport block after the LTE reacquires the unlicensed spectrum. Redundant version of HARQ retransmission.
- RV redundancy version
- the UE may be in the LTE.
- a subframe that needs to receive a PHICH during the release of the unlicensed spectrum does not receive the PHICH, and considers the information on the PHICH to be an ACK.
- the UE retains the data in the uplink HARQ buffer, and is used for performing uplink HARQ retransmission according to the uplink grant (UL grant) of the base station after the LTE reacquires the unlicensed spectrum, or generating a new uplink transport block according to the uplink grant of the base station. .
- the UE may release the unlicensed spectrum during LTE.
- a subframe that requires HARQ retransmission on the PUSCH does not perform uplink HARQ retransmission.
- the UE reserves the data in the uplink HARQ buffer, and is used for adaptive uplink HARQ retransmission according to the uplink grant (UL grant) of the base station after re-acquiring the unlicensed spectrum by the LTE, or performing non-adaptive HARQ retransmission. .
- the UE may receive an unlicensed spectrum acquisition indication or synchronization indication information sent by the base station, that is, the length of the release time of the unlicensed spectrum is monitored by the waiting timer. If the eNB re-acquires the unlicensed spectrum, the first processing module 22 of the UE stops the waiting time timer, and monitors the PDCCH, performs downlink receiving, uplink sending, continuing, or Continuing the HARQ operation before releasing the unlicensed spectrum, for example, receiving the downlink HARQ retransmission or the new TB block sent by the base station, receiving the uplink grant sent by the base station, performing uplink HARQ retransmission, or generating a new TB block for uplink transmission or advancement. Line uplink non-adaptive HARQ retransmission.
- the "pause” described in the embodiment of the present invention may be replaced by a description of “suspend”, “temporary cancellation”, “temporarily not performed”, etc., and the expressions thereof are all temporarily suspended from the unauthorized.
- the data processing of the spectrum but retaining the data processing that has already taken place, so that subsequent data processing can continue on the process that has already taken place.
- the "recovery” described in the embodiment of the present invention may be replaced by a description of "continue”, “continuation”, etc., and the meanings thereof are all uncompleted data processing processes when the suspension is continued.
- the data processing process includes a hybrid automatic repeat request (HARQ process), where the second processing module 23 is specifically configured to perform a HARQ entity when the release time monitored by the monitoring module 21 exceeds the time threshold.
- HARQ process hybrid automatic repeat request
- the HARQ entity reset operation of the SCell includes but is not limited to the following:
- the next received transport block is considered to be the first transport block transmission on the HARQ process
- timeAlignmentTimer The time alignment timer (timeAlignmentTimer) is timed out, and the uplink HARQ buffer is cleared, and the radio resource control layer (RRC) is notified to release the SRS resources of the SCell on the unlicensed spectrum.
- RRC radio resource control layer
- the second processing module 23 selects the licensed spectrum to restart the new HARQ process or, after the base station re-acquires the unlicensed spectrum, restarts the new HARQ process, taking LTE-A as an example, the UE's
- the second processing module 23 may select the PCdl or the SCdl on the licensed spectrum to send the MAC CE that is not successfully sent before the LTE release of the unlicensed spectrum; the MAC CE includes but not limited to a buffer status report (BSR) > power headroom report ( PHR, power headroom report) and other upstream MAC CE.
- BSR buffer status report
- PHR power headroom report
- the other transport block TB that has not been successfully transmitted before the LTE releases the unlicensed spectrum is responsible for retransmission by the radio link control layer (RLC) or may alternatively generate a new transport block for PCdl or SCdl on the licensed spectrum.
- RLC radio link control layer
- the data processing process includes discontinuous reception of a DRX process
- the first processing module 22 is specifically configured to perform at least one of the following operations attached to the unlicensed spectrum when the release time monitored by the monitoring module 21 does not exceed a time threshold: maintaining each DRX timer Normal operation (continue to run and stop after timeout), maintain normal operation of each DRX timer but the user equipment does not count or count (continue to run but the time of the DRX timer correspondingly extends the time during the unlicensed spectrum release Length), suspending monitoring of the physical downlink control channel, suspending downlink reception, suspending uplink transmission; and, after the base station reacquisitions the unlicensed spectrum, performing at least one of the following operations attached to the unlicensed spectrum: After the base station re-acquires the unlicensed spectrum, it resumes listening to the physical downlink control channel, resumes downlink reception, and resumes uplink transmission.
- the DRX timer in the embodiment of the present invention may include: a duration timer (onDurationTimer). a discontinuous reception inactivity timer (drx-InactivityTimer). a discontinuous reception retransmission timer (drx-RetransmissionTimer) ), hybrid automatic repeat request loopback time timer (HARQ RTT Timer), discontinuous reception short cycle timer (drxShortCycleTimer), and so on.
- the processing manner of suspending the monitoring of the physical downlink control channel, suspending the downlink receiving, and suspending the uplink sending in this embodiment refers to the related processing manner of the HARQ, and details are not described herein.
- the physical downlink control channel is resumed, and the downlink receiving and recovering are resumed.
- the processing method of the complex uplink transmission and the like refers to the related processing method for the HARQ, and details are not described herein.
- the "pause” described in the embodiment of the present invention may be replaced by a description of “suspend”, “temporary cancellation”, “temporarily not performed”, etc., and the expressions thereof are all temporarily suspended from the unauthorized.
- the data processing of the spectrum but retaining the data processing that has already taken place, so that subsequent data processing can continue on the process that has already taken place.
- the “recovery” described in the embodiment of the present invention may be replaced by a description of “continue”, “continuation”, etc., and the expressions thereof are all uncompleted data processing processes when the suspension is continued.
- the data processing process includes discontinuous reception of a DRX process
- the second processing module 23 is specifically configured to: when the release time monitored by the monitoring module 21 exceeds the time threshold, perform at least one of the following operations attached to the unlicensed spectrum: performing a HARQ entity reset operation Performing a deactivation operation of the cell using the unlicensed spectrum, stopping the DRX timers, and selecting a licensed spectrum to restart a new DRX process or maintaining a DRX process in which the licensed spectrum is ongoing or at the base station After re-acquiring the unlicensed spectrum, restart the new DRX process.
- the processing method of performing the HARQ entity reset operation and performing the deactivation operation of the cell using the unlicensed spectrum refers to the related processing manner of the HARQ, and details are not described herein.
- the device when the cell of the unlicensed spectrum and the cell of the licensed spectrum use the same DRX parameter configuration and DRX operation, when the second processing module 23 terminates the data processing process attached to the unlicensed spectrum, the device does not stop.
- the second processing module 23 terminates the data processing procedure attached to the unlicensed spectrum, the DRX timers are stopped.
- the SCdl on the unlicensed spectrum performs the DRX operation independent of the PCdl and the SCdl on the licensed spectrum, that is, the DRX parameter configuration on the SCdl and the UE's active time on the SCdl are independent of the authorization.
- DRX parameter configuration and activity time of the carrier on the spectrum does not stop the DRX timers.
- the common DRX operation in the prior art refers to the DRX parameter configuration on each SCdl and the DRX parameter configuration on the reused PCdl.
- the activity time on each SCdl and PCdl is the same, that is, each SCdl and PCdl in the active state are either active time or inactive time (inactive).
- the second processing module 23 performs a deactivation operation or a HARQ reset operation on the SCdl on the unlicensed spectrum, but does not stop each DRX timer because the DRD operation of the PCdl and other SCdl on the licensed spectrum is normally performed. It also depends on the running or stopping of these timers.
- the DRX processing solution provided in this embodiment may enable the UE to perform corresponding processing according to the length of the unlicensed spectrum release time, such as processing the DRX timer and processing the PDCCH, so that the unlicensed spectrum release period and the LTE reacquisition are not authorized.
- the DRX operation after the spectrum can be smoothly carried out or continued to facilitate better power saving effect when the UE works in the unlicensed spectrum.
- the data processing process includes an automatic retransmission request ARQ process
- the first processing module 22 is specifically configured to perform at least one of the following operations attached to the unlicensed spectrum when the release time monitored by the monitoring module 21 does not exceed a time threshold: suspending wireless link control Performing a reordering timer of the layer RLC, suspending the polling retransmission timer; and, after the base station reacquisitions the unlicensed spectrum, performing at least one of the following operations attached to the unlicensed spectrum: recovering the wireless a reordering timer of the link control layer, and triggering an RLC status report after the reordering timer expires; recovering a polling retransmission timer, and triggering setting polling after the polling retransmission timer expires
- the bit RLC data unit retransmits or transmits a new RLC data unit.
- the RLC status report (RLC status report) and the RLC protocol data unit (PDU) with the polling bit (poll) are set.
- the information such as the RLC PDU that needs to be retransmitted can be sent on the PCdl or SCdl on the licensed spectrum or the SCdl on the unlicensed spectrum. Therefore, when the LTE temporarily releases the unlicensed spectrum, the UE and the base station can naturally be the PCdl on the licensed spectrum. Or send the above information on SCdl.
- the UE and the base station may be performed by a cell provided by another base station.
- the CA may be performed between the base stations, the primary base station (MeNB, master eNB) provides PCell and 0 to multiple SCdl, and the secondary base station (SeNB, secondary eNB) provides one or more.
- the SCell if the SeNB is configured with the uplink, the SeNB needs to configure the PUCCH, which is the primary cell on the SeNB.
- the data radio bearer of the user plane can be located only on the SeNB, and communicates through the S1-U interface of the SeNB and the serving gateway (SGW); it can be split into two logical channels (logical Channel) through the radio interface between the MeNB and the UE and the SeNB
- the radio interface of the UE and the UE perform data transmission, and communicate with the network through the S1-U interface of the MeNB and the SGW. If only one primary cell is provided on the SeNB, and the primary cell is on the unlicensed spectrum, the LTE process needs to perform corresponding processing on the ARQ process after releasing the unlicensed spectrum.
- the UE receives one or more downlink RLC protocol data units (PDUs) from the SeNB, but does not have time to send the RLC status report (RLC status report) feedback RLC PDU to the base station.
- PDUs downlink RLC protocol data units
- RLC status report RLC status report
- Receiving status including information that the RLC PDU receives a successful ACK and/or receives a failed NACK; and/or the UE sends one or more RLC PDUs to the SeNB, but has not received the RLC status report sent by the SeNB, or the UE has received
- the RLC status report sent by the SeNB is reached, but the RLC PDU retransmission is performed in the future. In these cases, the ARQ processing problem after the unlicensed spectrum release is involved.
- the first processing module 22 may suspend, that is, suspend the reordering timer of the RLC layer (in a specific implementation, the suspension may be suspended or may be The timer is continued to run but the timer is not clocked.
- the first processing module 22 if the UE has sent the RLC PDU with the Poll bit set to the SeNB and starts the poll retransmit timer, the first processing module 22 The poll retransmission timer can be suspended.
- the base station processes the relevant timer according to the method corresponding to the UE.
- the data processing process includes an automatic retransmission request ARQ process
- the second processing module 23 is specifically configured to: when the release time monitored by the monitoring module 21 exceeds the time threshold, perform at least one of the following operations attached to the unlicensed spectrum: stopping the reordering And stopping the polling retransmission timer; and selecting to grant the spectrum to restart a new ARQ process or restarting the new ARQ process after the base station reacquires the unlicensed spectrum.
- the second processing module 23 may select the PCdl or SCell on the licensed spectrum provided by the MeNB to send and/or receive information about the ARQ.
- the ARQ processing scheme after the release of the unlicensed spectrum provided in this embodiment can prevent the ARQ process of the RLC layer from being performed normally due to the release of the unlicensed spectrum, thereby avoiding the ARQ retransmission delay. Larger TCP retransmissions, saving spectrum resources and increasing system throughput.
- the data processing process includes a random access process
- the first processing module 22 is specifically configured to perform at least one of the following operations attached to the unlicensed spectrum when the release time monitored by the monitoring module 21 does not exceed a time threshold: suspending random access Responding to the window (ie, counting the subframes of the random access response (RAR) window), suspending the contention resolution timer (ie, suspending counting of the contention resolution timer); and reacquiring at the base station After the unlicensed spectrum, performing at least one of the following operations attached to the unlicensed spectrum: restoring the random access response window (ie, continuing to count from the pause point), restoring the operation of the contention resolution timer (ie, continuing from The pause point starts counting).
- RAR random access response
- the first processing module 22 of the UE may suspend the RAR window, that is, pause counting the subframes of the RAR window; If the UE is waiting for a contention resolution (CR) message, that is, a random access procedure message 4 (msg4), and starts a contention resolution timer, the first processing module 22 of the UE may temporarily suspend the competition. The timer is resolved, that is, the count of the timer is suspended.
- RAR random access response
- CR contention resolution
- msg4 random access procedure message 4
- the data processing process includes a random access process.
- the second processing module 23 is specifically configured to: when the release time monitored by the monitoring module 21 exceeds the time threshold, perform at least one of the following operations that are attached to the unlicensed spectrum: Stop the random access response Window and stopping waiting for random access response message, stopping contention resolution timer, and stopping waiting for contention resolution message; and selecting to grant the spectrum to restart a new random access procedure or after the base station reacquires the unlicensed spectrum, Start a new random access process.
- the second processing module 23 of the UE may re-trigger the random access procedure after the LTE reacquires the unlicensed spectrum, and may be triggered by the base station by using the PDCCH or the UE.
- the MAC layer triggers.
- the data processing process includes a radio resource management RRM measurement process, where the first processing module 22 is configured to suspend the RRM when the release time monitored by the monitoring module 21 does not exceed a time threshold. a measuring process; and, after the base station reacquires the unlicensed spectrum, recovering the RRM measurement process.
- the RRM measurement is based on CRS or CSI-RS or DMRS-based reference signal received power (RSRP) and/or reference signal received quality (RSRQ). Make measurements.
- the base station configures the UE for RRM measurement on the SCell on the unlicensed spectrum.
- the data processing process includes a radio resource management RRM measurement process, where the second processing module 23 is specifically configured to release the RRM when the release time monitored by the monitoring module 21 exceeds the time threshold. Measuring parameters; and, selecting the licensed spectrum to restart the new RRM measurement process or restarting the new RRM process after the base station reacquires the unlicensed spectrum.
- the data processing process includes a channel state information CSI measurement process.
- the first processing module 22 is specifically configured to suspend the CSI when the release time monitored by the monitoring module 21 does not exceed a time threshold. a measuring process; and, after the base station reacquires the unlicensed spectrum, recovering the CSI measurement process.
- the CSI measurement in the embodiment of the present invention is based on CRS or CSI-RS or DMRS-based channel state measurement, including CQI, PMI, RI, PTI, and the like.
- the base station configures the UE for CSI measurement on the SCell on the unlicensed spectrum.
- the data processing process includes a channel state information CSI measurement process, where the second processing module 23 is specifically configured to release the CSI when the release time monitored by the monitoring module 21 exceeds the time threshold. Measuring parameters; and, selecting the licensed spectrum to restart a new CSI measurement process or restarting the new CSI process after the base station reacquires the unlicensed spectrum.
- the embodiment of the present invention may also be performed by the first processing module 22 after determining that the base station releases the unlicensed spectrum: suspending the data processing process attached to the unlicensed spectrum, and restarting at the base station. After the unlicensed spectrum is obtained, the data processing process is resumed; or, the second processing module 23 is always executed: the user equipment terminates the data processing process attached to the unlicensed spectrum, and selects the licensed spectrum to restart the new The data processing process or after the base station reacquires the unlicensed spectrum, restarts the new data processing process.
- different processing schemes are used.
- the user equipment when the user equipment determines that the base station releases the unlicensed spectrum, the user equipment monitors the length of time that the base station releases the unlicensed spectrum, and the release time indication is Determining, by the base station, a time interval from releasing the unlicensed spectrum to re-acquiring the unlicensed spectrum; when the release time does not exceed a time threshold, the user equipment suspends a data processing procedure attached to the unlicensed spectrum, and in the After the base station re-acquires the unlicensed spectrum, the data processing process is resumed, thereby ensuring normal recovery of the communication process after re-acquiring the unlicensed spectrum; When the release time exceeds the time threshold, the user equipment terminates the data processing procedure attached to the unlicensed spectrum, and selects the licensed spectrum to restart a new data processing procedure or reacquires the unauthorized operation at the base station. After the spectrum, the new data processing process is restarted, thereby avoiding delayed redundant retransmission and wasting radio
- FIG. 5 is a schematic structural diagram of another embodiment of a user equipment according to the present invention. As shown in FIG. 5, it may include: a memory 51 and a processor 52, wherein the processor 52 calls a program stored in the memory 51, and performs the following process:
- the release time indicating a time interval from the release of the unlicensed spectrum by the base station to re-acquisition of the unlicensed spectrum
- the release time does not exceed the time threshold, suspending the data processing process attached to the unlicensed spectrum, and after the base station reacquires the unlicensed spectrum, recovering the data processing process; when the release time exceeds The time threshold terminates a data processing procedure attached to the unlicensed spectrum, and selects a licensed spectrum to restart a new data processing process or restarts a new data processing process after the base station reacquires the unlicensed spectrum .
- the processor 52 determines that the base station releases the unlicensed spectrum, including:
- the processor 52 determines that the base station releases the unlicensed spectrum when receiving the indication information for releasing the unlicensed spectrum sent by the base station;
- the processor 52 detects that the base station releases the unlicensed spectrum according to parameters of the base station.
- the processor 52 monitors the length of time that the base station releases the unlicensed spectrum, including:
- the processor 52 starts a latency timer for recording the length of time that the base station releases the unlicensed spectrum.
- the waiting time timer does not expire, it is determined that the release time does not exceed the time threshold.
- the waiting time timer expires, determining that the release time exceeds the time threshold;
- the processor 52 receives a release time of a specific unlicensed spectrum sent by the base station, and Comparing the received release time with a preset time threshold to determine whether the received release time exceeds the preset time threshold;
- the processor 52 receives the release indication of the unlicensed spectrum sent by the base station, and calculates a release time of the unlicensed spectrum by the base station according to the release indication and a preset rule, and the calculated release time.
- a comparison with a preset time threshold determines whether the received release time exceeds the preset time threshold.
- the waiting time timer includes a deactivation timer; and the release time of the specific unlicensed spectrum includes at least one of the following times: the time when the unlicensed spectrum is occupied by other devices. The reserved time for the unlicensed spectrum to be used by other devices, and the silent time of the system where the base station is located in the unlicensed spectrum.
- the data processing procedure includes a hybrid automatic repeat request HARQ process
- the processor 52 suspends the data processing process attached to the unlicensed spectrum, including: the processor 52 performs at least one of the following operations attached to the unlicensed spectrum: suspending monitoring of the physical downlink control channel, suspending the downlink Receive, pause uplink transmission, reserve HARQ buffer, suspend receiving downlink HARQ retransmission, suspend receiving downlink HARQ feedback information, suspend transmission uplink
- HARQ retransmits and suspends sending uplink HARQ feedback information
- the processor 52 recovers the data processing process, including:
- the processor 52 After the base station re-acquires the unlicensed spectrum, the processor 52 performs at least one of the following operations that are attached to the unlicensed spectrum: recovering the physical downlink control channel, recovering the downlink receiving, and recovering the uplink sending and recovering. Receiving downlink HARQ retransmission, recovering receiving downlink HARQ feedback information, restoring transmitting uplink HARQ retransmission, and recovering transmitting uplink HARQ feedback information.
- the data processing process includes a hybrid automatic repeat request HARQ process
- the processor 52 terminates a data processing procedure attached to the unlicensed spectrum, including: the processor 52 performing a HARQ entity reset operation or performing a deactivation operation of a cell using the unlicensed spectrum;
- the selecting the licensed spectrum to restart a new data processing process or restarting the new data processing process after the base station reacquires the unlicensed spectrum including:
- the processor 52 selects the licensed spectrum to restart the new HARQ process or restarts the new HARQ process after the base station reacquires the unlicensed spectrum.
- the data processing process includes discontinuous reception of a DRX process; the processor 52 suspending a data processing process attached to the unlicensed spectrum, including: the processor 52 performing the attaching to the At least one of the following operations of the unlicensed spectrum: maintaining normal operation of each DRX timer, suspending monitoring of the physical downlink control channel, suspending downlink reception, and suspending uplink transmission;
- the processor 52 recovers the data processing process, including:
- the processor 52 performs at least one of the following operations on the unlicensed spectrum: after the base station re-acquires the unlicensed spectrum, resumes listening to the physical downlink control channel, resumes downlink reception, and resumes uplink transmission.
- the data processing process includes discontinuous reception of a DRX process; the processor 52 terminates a data processing process attached to the unlicensed spectrum, including: the processor 52 performs the attaching to the At least one of the following operations of the unlicensed spectrum:
- the selecting the licensed spectrum to restart the new data processing process or restarting the new data processing process after the base station reacquires the unlicensed spectrum including:
- the processor 52 selects to grant the spectrum to restart the new DRX process or maintain the ongoing DRX process of the licensed spectrum or restarts the new DRX process after the base station reacquires the unlicensed spectrum.
- the processor 52 terminates the data processing process attached to the unlicensed spectrum, the DRX timer is not stopped;
- the processor 52 terminates the data processing procedure attached to the unlicensed spectrum, the DRX timer is stopped.
- the data processing process includes an automatic retransmission request ARQ Cheng
- the processor 52 suspends the data processing process attached to the unlicensed spectrum, including: the processor 52 performs at least one of the following operations attached to the unlicensed spectrum: suspending the radio link control layer RLC Reordering timer, suspending polling retransmission timer;
- the processor 52 recovers the data processing process, including:
- the processor 52 After the base station re-acquires the unlicensed spectrum, the processor 52 performs at least one of the following operations attached to the unlicensed spectrum: recovering a reordering timer of the radio link control layer, and in the After the reordering timer expires, the RLC status report is triggered; the polling retransmission timer is resumed, and after the polling retransmission timer expires, the RLC data unit with the polling bit set is triggered to retransmit or send a new RLC data unit. .
- the data processing process includes an automatic retransmission request ARQ process
- the processor 52 terminates the data processing process attached to the unlicensed spectrum, including: the processor 52 performs at least one of the following operations attached to the unlicensed spectrum: stopping the reordering timer, stopping The polling retransmission timer;
- the selecting the licensed spectrum to restart the new data processing process or restarting the new data processing process after the base station reacquires the unlicensed spectrum including:
- the processor 52 selects the licensed spectrum to restart the new ARQ process or restarts the new ARQ process after the base station reacquires the unlicensed spectrum.
- the data processing process includes a random access process; the processor 52 suspending the data processing process attached to the unlicensed spectrum, including: the processor 52 performing the attaching to the non- At least one of the following operations of the licensed spectrum: suspending a random access response window, suspending a contention resolution timer;
- the processor 52 recovers the data processing process, including:
- the processor 52 After the base station re-acquires the unlicensed spectrum, the processor 52 performs at least one of the following operations attached to the unlicensed spectrum: recovering the random access response window, and restoring the operation of the contention timer.
- the data processing process includes a random access process
- the processor 52 terminates the data processing process attached to the unlicensed spectrum, including: the processor 52 performs at least one of the following operations attached to the unlicensed spectrum: stopping the random access response window and stopping waiting Random access response message, stop contention resolution timer, and stop waiting for contention resolution message;
- the processor 52 selects the licensed spectrum to restart the new data processing process or restarts the new data processing process after the base station reacquires the unlicensed spectrum, including:
- the processor 52 selects the licensed spectrum to restart the new random access procedure or restarts the new random access procedure after the base station reacquires the unlicensed spectrum.
- the data processing procedure includes a radio resource management RRM measurement process
- the processor 52 suspending the data processing process attached to the unlicensed spectrum, including: the processor 52 suspending the RRM measurement process;
- the processor 52 recovers the data processing process, including:
- the processor 52 resumes the RRM measurement process.
- the data processing procedure includes a radio resource management RRM measurement process
- the processor 52 terminates the data processing process attached to the unlicensed spectrum, including: the processor 52 releasing the RRM measurement parameter;
- the processor 52 selects the licensed spectrum to restart the new data processing process or restarts the new data processing process after the base station reacquires the unlicensed spectrum, including:
- the processor 52 selects the licensed spectrum to restart the new RRM measurement process or restarts the new RRM process after the base station reacquires the unlicensed spectrum.
- the data processing procedure includes a channel state information CSI measurement process
- the processor 52 suspending the data processing process attached to the unlicensed spectrum, including: the processor 52 suspending the CSI measurement process;
- the processor 52 recovers the data processing process, including:
- the processor 52 resumes the CSI measurement process.
- the data processing procedure includes a channel state information CSI measurement process
- the processor 52 terminates the data processing process attached to the unlicensed spectrum, including: the processor 52 releasing the CSI measurement parameter;
- the processor 52 selects the licensed spectrum to restart the new data processing process or restarts the new data processing process after the base station reacquires the unlicensed spectrum, including:
- the processor 52 selects the licensed spectrum to restart the new CSI measurement process or restarts the new CSI process after the base station reacquires the unlicensed spectrum.
- the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).
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PCT/CN2014/072236 WO2015123816A1 (zh) | 2014-02-19 | 2014-02-19 | 释放非授权频谱后的数据处理方法及用户设备 |
EP14883203.3A EP3096564B1 (en) | 2014-02-19 | 2014-02-19 | Data processing method after release of unauthorized spectrum, and user equipment |
CN201480000899.5A CN105103624B (zh) | 2014-02-19 | 2014-02-19 | 释放非授权频谱后的数据处理方法及用户设备 |
JP2016552497A JP6381660B2 (ja) | 2014-02-19 | 2014-02-19 | 免許不要周波数域がリリースされた後にデータを処理するための方法、およびユーザ機器 |
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Also Published As
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JP6381660B2 (ja) | 2018-09-05 |
CN105103624B (zh) | 2019-03-05 |
EP3096564A4 (en) | 2017-03-15 |
EP3096564B1 (en) | 2018-10-10 |
CN105103624A (zh) | 2015-11-25 |
EP3096564A1 (en) | 2016-11-23 |
US20160360422A1 (en) | 2016-12-08 |
JP2017510168A (ja) | 2017-04-06 |
US9936394B2 (en) | 2018-04-03 |
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