WO2022203264A1 - 자동전송과 cg 재전송의 공존을 위한 방법 및 장치 - Google Patents
자동전송과 cg 재전송의 공존을 위한 방법 및 장치 Download PDFInfo
- Publication number
- WO2022203264A1 WO2022203264A1 PCT/KR2022/003597 KR2022003597W WO2022203264A1 WO 2022203264 A1 WO2022203264 A1 WO 2022203264A1 KR 2022003597 W KR2022003597 W KR 2022003597W WO 2022203264 A1 WO2022203264 A1 WO 2022203264A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- prioritized
- transmission
- automatic transmission
- grant
- resource
- Prior art date
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 166
- 238000000034 method Methods 0.000 title claims abstract description 125
- 238000004891 communication Methods 0.000 claims abstract description 26
- 230000008569 process Effects 0.000 claims description 65
- 238000012913 prioritisation Methods 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 abstract description 19
- 238000010586 diagram Methods 0.000 description 20
- 230000015556 catabolic process Effects 0.000 description 5
- 238000006731 degradation reaction Methods 0.000 description 5
- 230000000295 complement effect Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007420 reactivation Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
- H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/115—Grant-free or autonomous transmission
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
-
- 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
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
-
- 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
-
- 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
- H04L1/1829—Arrangements specially adapted for the receiver end
- H04L1/1864—ARQ related signaling
-
- 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
- H04L1/1867—Arrangements specially adapted for the transmitter end
- H04L1/188—Time-out mechanisms
-
- 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
- H04L1/1867—Arrangements specially adapted for the transmitter end
- H04L1/1887—Scheduling and prioritising arrangements
-
- 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
- H04L1/1867—Arrangements specially adapted for the transmitter end
- H04L1/1893—Physical mapping arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/04—Error control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
- H04W72/566—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient
- H04W72/569—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient of the traffic information
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
- H04W72/566—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient
Definitions
- the present invention relates to a method and apparatus for performing automatic transmission and automatic retransmission of CG.
- the 5G communication system or the pre-5G communication system is called a system after the 4G network (Beyond 4G Network) communication system or the LTE system after (Post LTE).
- the 5G communication system is being considered for implementation in a very high frequency (mmWave) band (eg, such as a 60 gigabyte (60 GHz) band).
- mmWave very high frequency
- FD-MIMO Full Dimensional MIMO
- array antenna analog beam-forming, and large scale antenna technologies are being discussed.
- cloud radio access network cloud radio access network: cloud RAN
- ultra-dense network ultra-dense network
- D2D Device to Device communication
- wireless backhaul moving network, cooperative communication, Coordinated Multi-Points (CoMP), and interference cancellation Technology development is underway.
- CoMP Coordinated Multi-Points
- ACM advanced coding modulation
- FQAM Hybrid FSK and QAM Modulation
- SWSC Small Cell Superposition Coding
- FBMC Fan Bank Multi Carrier
- NOMA non orthogonal multiple access
- SCMA sparse code multiple access
- IoT Internet of Things
- IoE Internet of Everything
- M2M Machine Type Communication
- MTC Machine Type Communication
- IoT an intelligent IT (Internet Technology) service that collects and analyzes data generated from connected objects and creates new values in human life can be provided.
- IoT is a field of smart home, smart building, smart city, smart car or connected car, smart grid, health care, smart home appliance, advanced medical service, etc. can be applied to
- 5G communication technology is implemented by techniques such as beam forming, MIMO, and array antenna.
- cloud RAN cloud radio access network
- the configured grant which is a transmission resource that is periodically set, may transmit data that is not transmitted due to reasons such as priority according to an automatic transmission method.
- the CG may transmit the corresponding data in an automatic retransmission method.
- LBT Listen Before Talk
- An object of the present invention is to define an operation method by each transmission method of untransmitted data when both automatic transmission and automatic retransmission methods are set.
- a configured grant is a de-prioritized uplink grant to do; checking whether automatic transmission is configured for the de-prioritized uplink grant; and if automatic transmission is configured for the de-prioritized uplink grant, a CG timer running for a hybrid automatic repeat request (HARQ) process corresponding to the de-prioritized uplink grant and a CG running for the corresponding HARQ process It may include stopping the retransmission timer.
- HARQ hybrid automatic repeat request
- a transceiver in a terminal in a wireless communication system according to an embodiment of the present invention, a transceiver; and confirming that the configured grant (CG) is a de-prioritized uplink grant; check whether automatic transmission is configured for the de-prioritized uplink grant; and if automatic transmission is configured for the de-prioritized uplink grant, a CG timer running for a hybrid automatic repeat request (HARQ) process corresponding to the de-prioritized uplink grant and a CG running for the corresponding HARQ process A control unit for stopping the retransmission timer may be included.
- HARQ hybrid automatic repeat request
- FIG. 1 is a diagram illustrating a logical channel prioritization scheme according to an embodiment of the present disclosure.
- FIG. 2 is a diagram illustrating an automatic transmission method of a Configured Grant according to an embodiment of the present disclosure.
- FIG. 3 is a diagram illustrating an automatic retransmission method of Configured Grant according to an embodiment of the present disclosure.
- FIG. 4 is a diagram illustrating an automatic transmission method of Configured Grant when both automatic transmission and automatic retransmission are configured according to an embodiment of the present disclosure.
- 5 is a diagram illustrating an automatic transmission method of Configured Grant when both automatic transmission and automatic retransmission are configured according to an embodiment of the present disclosure.
- FIG. 6 is a diagram illustrating an automatic transmission method of Configured Grant when both automatic transmission and automatic retransmission are configured according to an embodiment of the present disclosure.
- FIG. 7 is a diagram illustrating a condition for performing automatic retransmission according to an embodiment of the present disclosure.
- FIG. 8 is a diagram illustrating an automatic transmission method of Configured Grant when both automatic transmission and automatic retransmission are configured according to an embodiment of the present disclosure.
- FIG. 9 is a diagram illustrating a structure of a base station according to an embodiment of the present invention.
- FIG. 10 is a diagram illustrating the structure of a terminal according to an embodiment of the present invention.
- FIG. 1 is a diagram illustrating a logical channel prioritization scheme according to an embodiment of the present disclosure.
- a dedicated radio resource for each service flow is set, and each service flow It is possible to perform transmission optimized to the requirements of
- each service flow has a dedicated radio resource
- several types of radio resources can be set at the same time. Therefore, a situation in which various types of radio resources overlap on the time axis or the time and frequency axis may occur, and at one specific time point, a maximum of one uplink radio resource (Uplink Grant) per BWP (Bandwidth Part) may be transmitted. In this case, it may be necessary to select and transmit one uplink radio resource. To this end, the priority of each uplink radio resource may be determined.
- the priority of the uplink radio resource is when a MAC PDU (Medium Access Control Protocol Data Unit) to be transmitted to the uplink radio resource has already been generated (when the MAC PDU is stored), data multiplexed into the MAC PDU. It may be determined based on a logical channel having the highest priority value among them. If the MAC PDU to be transmitted to the uplink radio resource is not already generated, the highest priority among the priorities of the logical channel having available data that can be multiplexed into the MAC PDU to be transmitted to the uplink radio resource The priority value may be determined as the priority value of this uplink logical channel.
- MAC PDU Medium Access Control Protocol Data Unit
- the uplink radio resource having the highest priority (lowest priority value) while overlapping on the time axis (or time and frequency axis) may be transmitted as a prioritized uplink radio resource (Prioritized Uplink Grant). Otherwise, in a different time axis (or time and frequency axis), another prioritized uplink radio resource or an uplink radio resource with a prioritized scheduling request transmission (Prioritized Scheduling Request Transmission) is a non-prioritized uplink radio resource (De-prioritized Uplink Grant) and not transmitted. If overlapping resources on the time axis (or time and frequency axes) have the same priority, the prioritized uplink radio resource or the prioritized scheduling request transmission may be determined by the following rule:
- the Dynamic Grant becomes a prioritized uplink radio resource.
- one uplink radio resource may be arbitrarily selected as the uplink radio resource in the UE implementation.
- the uplink radio resource becomes the prioritized uplink radio resource.
- Uplink Grant that is, CG or DG
- the other uplink resource may be an uplink radio resource (Uplink Grant) or a scheduling request (Scheduling Request) transmission.
- Uplink Grant uplink radio resource
- Scheduling Request scheduling request
- the uplink radio resource 110 since another uplink resource 120 has a higher priority, the uplink radio resource 110 becomes a non-prioritized uplink resource and is not transmitted. This operation of transmitting only prioritized resources according to the priority of uplink resources is referred to as Logical Channel (LCH)-based Prioritization.
- LCH Logical Channel
- FIG. 2 is a diagram illustrating an automatic transmission method of a Configured Grant according to an embodiment of the present disclosure.
- the logical channel-based prioritization described in FIG. 1 is an operation in which the terminal selects a prioritized uplink radio resource for an uplink resource.
- the base station has data to be transmitted from the terminal to an unprioritized uplink radio resource. It is not known precisely whether transmission is not performed because it is classified as an unconsolidated resource, or whether there is no data to be transmitted, for example, uplink skipping has been performed and thus transmission has not been performed.
- the non-prioritized uplink radio resource is Configured Grant (CG), which is a transmission resource that is periodically set, when the base station allocates the retransmission resource of the Configured Grant, if there is no data to be sent by the terminal, this resource is It becomes a wasted resource that is not transmitted. For this problem, the non-prioritized Configured Grant uplink radio resource may be automatically transmitted.
- CG Configured Grant
- an uplink radio resource 210 of a certain Configured Grant becomes a de-prioritized uplink grant that is not prioritized by another resource 220, and at this time, a MAC PDU to be transmitted is generated, but If transmission is not performed, the neighbor resource 250 of the same HARQ process (Hybrid Automatic Repeat Request Process) that can be transmitted within the same Configured Grant configuration resource may be responsible for transmitting the automatically stored MAC PDU.
- the resource of the previous Configured Grant is an uplink radio resource that is not prioritized, and must be of a size capable of transmitting a MAC PDU.
- the condition of automatic transmission may be limited only in the case of a resource having the same size as that of transmitting the MAC PDU.
- Configured Grant (Autonomous Transmission, Autonomous Tx)
- ConfiguredGrantTimer Configured Grant timer
- ConfiguredGrantTimer starts when the HARQ process for which Configured Grant is set is transmitted, and while ConfiguredGrantTimer is running, no new Configured Grant transmission of the corresponding HARQ process is performed.
- automatic transmission may be performed to the next adjacent Configured Grant 250 .
- Automatic transfer can be used to transfer data for URLLC.
- the automatic transmission operation may be performed when the UE transmits HARQ information connected to the initial transmission resource of the Configured Grant to the HARQ device when the UE receives the uplink resource, and then satisfies the automatic transmission condition in the HARQ operation.
- the automatic transmission may be configured by the base station to the terminal in a radio resource control (RRC) message. Through the automatic transmission setting, the base station can predict that the terminal will perform automatic transmission.
- RRC radio resource control
- FIG. 3 is a diagram illustrating an automatic retransmission method of Configured Grant according to an embodiment of the present disclosure.
- Automatic retransmission refers to an operation of retransmitting a generated MAC PDU after a predetermined time when transmission is impossible due to a Listen Before Talk (LBT) failure or collision with other transmissions in an unlicensed band.
- Automatic retransmission uses the Configured Grant initial transmission resource, but is not classified as initial transmission but is classified as retransmission, and only stored MAC PDUs are transmitted without NDI (New Data Indicator) toggle of the HARQ process.
- LBT Listen Before Talk
- Automatic retransmission may be controlled by CGRT (cg-RetransmissionTimer, CG Retransmission Timer). Specifically, when the UE performs transmission or retransmission using the initial transmission resource 310 of the Configured Grant, CGRT is started ( 320 ). In addition, the ConfiguredGrantTimer (CGT) can also be started so that the initial transmission of the Configured Grant is not performed (330). The length of the CGRT is usually set shorter than the CGT, so that when the CGRT expires, the UE can perform automatic retransmission instead of the initial transmission using the Configured Grant resource. Setting the CGRT may enable the UE to wait for allocation of a retransmission resource rather than automatic retransmission from the base station during the CGRT period.
- CGRT cg-RetransmissionTimer, CG Retransmission Timer
- the UE may perform automatic retransmission on the Configured Grant resource 360 thereafter ( 340 ). If the transmission of the Configured Grant resource that the UE was trying to transmit experiences an LBT failure and is notified of the LBT failure from the physical layer, the HARQ process of this Configured Grant becomes a Pending HARQ Process, and automatic retransmission can be performed after the expiration of the CGRT.
- the pending HARQ process will be classified as a not pending HARQ process when a transmission that does not undergo LBT failure is subsequently performed, when a Configured Grant is initialized and the HARQ process is not related to another active Configured Grant, or when the HARQ buffer of the HARQ process is empty.
- This automatic retransmission can be used when the LBT operation is performed in the unlicensed band.
- automatic retransmission may be set separately, and in this case, the setting of CGRT may be automatic retransmission.
- This automatic retransmission can be set by the base station to the terminal in an RRC message. Through the setting of automatic retransmission, the base station may predict that the terminal will perform automatic retransmission.
- FIG. 4 is a diagram illustrating an automatic transmission method of Configured Grant when both automatic transmission and automatic retransmission are configured according to an embodiment of the present disclosure.
- Autonomous Transmission and Autonomous Retransmission are used as transmission methods of untransmitted MAC PDUs for different operations, they may be complementary to each other. Therefore, when both automatic transmission and automatic retransmission (cg-RetransmissionTimer) are set, the transmission of the untransmitted MAC PDU for the non-prioritized Configured Grant is performed as Autonomous Transmissions, and LBT failure or other transmission in the unlicensed band Transmission of the MAC PDU for which transmission has not been completed due to a collision with, etc. may be performed by automatic retransmission.
- both automatic transmission and automatic retransmission are set in this way, an operation method considering both transmission methods needs to be defined and implemented in the device. Then, the two different operations of automatic transmission and automatic retransmission will be able to operate without performance degradation.
- the Configured Grant 410 is an uplink radio resource that is not prioritized by another resource 420 such as an overlapping uplink radio resource or a scheduling request message in another time axis (or time and frequency axis) (De-prioritized Uplink Grant) ), you can enter the automatic transmission procedure.
- the running ConfiguredGrantTimer may be stopped ( 430 ), and the Configured Grant initial transmission resource of the corresponding HARQ process may be used for automatic transmission.
- the cg-RetransmissionTimer (CGRT) for automatic retransmission may also stop operation ( 435 ). At this time, the CGRT stopping operation should be applied only when automatic transmission is set. The reason is that, when automatic transmission is not configured, the retransmission of the Configured Grant must be performed by separate allocation of the retransmission resource of the base station using CS-RNTI. because it can
- both ConfiguredGrantTimer and cg-RetransmissionTimer are stopped, and if the HARQ process of this CG is not a pending HARQ process, it is determined as initial transmission of the Configured Grant resource, considering that the NDI bit is toggled (Consider). It can be used as a transmission resource. Through this, automatic transmission of the MAC PDU stored in the adjacent Configured Grant resource 450 that can be used later by the automatic transmission procedure can be performed (440). In some embodiments, when the Configured Grant for which automatic transmission is set is not prioritized (De-prioritized), the corresponding HARQ process is considered as a not pending HARQ process so that automatic transmission is performed thereafter and unnecessary automatic retransmission is not performed.
- the corresponding HARQ process when the Configured Grant is not prioritized (De-prioritized) regardless of the automatic transmission setting, the corresponding HARQ process is considered as a not pending HARQ process so that automatic transmission is performed afterwards and unnecessary automatic retransmission is not performed. can do. Since an operation considered as a Pending HARQ process or a Not Pending HARQ process is an operation applied only when CGRT is configured, the operation may be limited to a case in which CGRT is configured. However, in another embodiment, an operation considered as a Pending HARQ process or a Not Pending HARQ process may be performed when LCH-based prioritization is set or without special conditions.
- 5 is a diagram illustrating an automatic transmission method of Configured Grant when both automatic transmission and automatic retransmission are configured according to an embodiment of the present disclosure.
- Autonomous Transmission and Autonomous Retransmission are used as transmission methods of untransmitted MAC PDUs for different operations, they may be complementary to each other. Therefore, when both automatic transmission and automatic retransmission (cg-RetransmissionTimer) are set, the transmission of the untransmitted MAC PDU for the non-prioritized Configured Grant is performed as Autonomous Transmissions, and LBT failure or other transmission in the unlicensed band Transmission of the MAC PDU for which transmission has not been completed due to a collision with, etc. may be performed by automatic retransmission.
- both automatic transmission and automatic retransmission are set in this way, an operation method considering both transmission methods needs to be defined and implemented in the device. Only then will the two different operations of automatic transmission and automatic retransmission work without performance degradation.
- the Configured Grant 540 resource on which automatic retransmission is performed is not prioritized (de-prioritized) by another uplink resource 545 immediately after transmission starts, and thus the transmission is stopped.
- the Configured Grant resource 540 becomes a non-prioritized uplink radio resource (De-prioritized Uplink Grant), and then the corresponding HARQ process for automatic transmission may become a not pending HARQ process.
- ConfiguredGrantTimer and cg-RetransmissionTimer that have already started and are operating may be stopped ( 550 ).
- the non-prioritized Configured Grant may be automatically transmitted from the next available Configured Grant resource 570 .
- the HARQ process of the de-prioritized Configured Grant may be considered as a not pending process and may be transmitted from the Configured Grant resource thereafter.
- Configured Grant is not prioritized (De-prioritized)
- stopping the cg-RetransmissionTimer in operation is also necessary to advance the time of automatic transmission to perform fast automatic transmission.
- FIG. 6 is a diagram illustrating an automatic transmission method of Configured Grant when both automatic transmission and automatic retransmission are configured according to an embodiment of the present disclosure.
- Autonomous Transmission and Autonomous Retransmission are used as transmission methods of untransmitted MAC PDUs for different operations, they may be complementary to each other. Therefore, when both automatic transmission and automatic retransmission (cg-RetransmissionTimer) are set, the transmission of the untransmitted MAC PDU for the non-prioritized Configured Grant is performed as Autonomous Transmissions, and LBT failure or other transmission in the unlicensed band Transmission of the MAC PDU for which transmission has not been completed due to a collision with, etc. may be performed by automatic retransmission.
- both automatic transmission and automatic retransmission are set in this way, an operation method considering both transmission methods needs to be defined and implemented in the device. Only then will the two different operations of automatic transmission and automatic retransmission work without performance degradation.
- the Configured Grant resource is not prioritized (De-prioritized) due to other resources or cancellation instructions from the base station, and becomes a non-prioritized uplink radio resource (De-prioritized Uplink Grant). do (610).
- the Configured Grant is set in this Configured Grant ( 620 )
- the operation of the HARQ process for automatic retransmission needs to be performed. Therefore, if automatic transmission of this non-prioritized Configured Grant is set, the ConfiguredGrantTimer of the HARQ process for the non-prioritized uplink radio resource Configured Grant is stopped (630), so that automatic transmission using the adjacent Configured Grant resource is performed. can do.
- the HARQ process may perform an automatic transmission procedure.
- FIG. 7 is a diagram illustrating a condition for performing automatic retransmission according to an embodiment of the present disclosure.
- Automatic retransmission is when the base station fails to allocate retransmission resources due to LBT failure or radio resource collision during uplink transmission using Configured Grant in an unlicensed band. After expiration of cg-RetransmissionTimer, the MAC stored in the adjacent Configured Grant resource A method of retransmitting a PDU. This automatic retransmission is available in Configured Grant using the same HARQ process. However, if the size of the MAC PDU stored in the HARQ buffer is different from the size that can be transmitted in the adjacent Configured Grant to perform automatic retransmission, automatic retransmission of this MAC PDU cannot be performed.
- the resource size change by re-activation of the Configured Grant or the Configured Grant setting (CG Configuration) with different resource sizes is the HARQ process. There may be cases of sharing.
- the transmission of the Configured Grant 710 that has performed the initial transmission is not transmitted due to LBT failure.
- this HARQ process may be a Pending HARQ process.
- the stored MAC PDU may not be transmitted. In this case, even if the automatic retransmission condition is satisfied thereafter, automatic retransmission cannot occur. Therefore, if the stored MAC PDU does not match the resource size of the Configured Grant, the automatic retransmission procedure should not be entered.
- ConfiguredGrantTimer does not work and the HARQ process is not operating, or the uplink radio resource ( If the size of the Configured Grant) does not match the size of the stored MAC PDU, the NDI (New Data Indicator) bit is considered to be toggled (Consider) and the Configured Grant and related HARQ information are sent to the HARQ device. can transmit This may be an operation that enters a stage for initial transmission rather than automatic retransmission.
- the uplink radio resource previously delivered to the same HARQ process was a Configured Grant
- the NDI bit is regarded as not toggled, and the Configured Grant and related HARQ information may be delivered to the HARQ device. This can be an action to enter the automatic retransmission phase.
- the size of the uplink radio resource matches the size of the stored MAC PDU
- the size of the uplink radio resource is greater than or equal to the size of the stored MAC PDU
- FIG. 8 is a diagram illustrating an automatic transmission method of Configured Grant when both automatic transmission and automatic retransmission are configured according to an embodiment of the present disclosure.
- Autonomous Transmission and Autonomous Retransmission are used as transmission methods of untransmitted MAC PDUs for different operations, they may be complementary to each other. Therefore, when both automatic transmission and automatic retransmission (cg-RetransmissionTimer) are set, the transmission of the untransmitted MAC PDU for the non-prioritized Configured Grant is performed as Autonomous Transmissions, and LBT failure or other transmission in the unlicensed band is performed. Transmission of the MAC PDU for which transmission has not been completed due to collision, etc. may be performed by automatic retransmission.
- both automatic transmission and automatic retransmission are set in this way, an operation method considering both transmission methods needs to be defined and implemented in the device. Only then will the two different operations of automatic transmission and automatic retransmission work without performance degradation.
- the uplink radio resource for prioritizing automatic retransmission is not prioritized (De-prioritized), and thus the non-prioritized uplink radio resource (De-prioritized). It is characterized in that automatic retransmission is continuously performed even when an uplink grant is obtained. This means that automatic retransmission is performed without changing to automatic retransmission when at least one automatic retransmission condition is satisfied. To this end, if the retransmission condition of the Configured Grant is already satisfied, the HARQ process may be considered as a pending HARQ process when this resource becomes a non-prioritized uplink radio resource.
- the Configured Grant 840 resource on which automatic retransmission is performed is not prioritized (de-prioritized) by another uplink resource 845 immediately after transmission starts, and thus the transmission is stopped.
- the Configured Grant resource 840 becomes a non-prioritized uplink radio resource (De-prioritized Uplink Grant), but since it has already entered the automatic retransmission procedure before, the corresponding HARQ process may be a Pending HARQ process.
- ConfiguredGrantTimer and cg-RetransmissionTimer that have already started and are operating may be stopped ( 850 ).
- the non-prioritized Configured Grant may perform automatic retransmission in the next transmittable Configured Grant resource 870 ( 860 ).
- This de-prioritized HARQ process of the Configured Grant that is being automatically retransmitted may be considered as a not pending process, and the Configured Grant resource may be used to transmit it thereafter.
- stopping the cg-RetransmissionTimer in operation when Configured Grant becomes de-prioritized is also necessary to advance the automatic retransmission time to perform fast automatic retransmission.
- the Configured Grant resource being automatically retransmitted is a Configured Grant resource, it may mean a resource used for transmission as it is classified as a retransmission resource rather than an initial transmission.
- FIG. 9 is a diagram illustrating a structure of a base station according to an embodiment of the present invention.
- the base station may include a transceiver 910 , a controller 920 , and a storage 930 .
- the controller 920 may be defined as a circuit or an application specific integrated circuit or at least one processor.
- the transceiver 910 may transmit/receive signals to and from other network entities.
- the transceiver 910 may transmit, for example, system information to the terminal, and may transmit a synchronization signal or a reference signal.
- the controller 920 may control the overall operation of the base station according to the embodiment proposed in the present invention. For example, the controller 920 may control a signal flow between blocks to perform an operation according to the above-described flowchart.
- the storage unit 930 may store at least one of information transmitted and received through the transceiver 910 and information generated through the control unit 920 .
- FIG. 10 is a diagram illustrating the structure of a terminal according to an embodiment of the present invention.
- the terminal may include a transceiver 1010 , a control unit 1020 , and a storage unit 1030 .
- the controller may be defined as a circuit or an application-specific integrated circuit or at least one processor.
- the transceiver 1010 may transmit/receive signals to and from other network entities.
- the transceiver 1010 may receive, for example, system information from a base station, and may receive a synchronization signal or a reference signal.
- the controller 1020 may control the overall operation of the terminal according to the embodiment proposed in the present invention. For example, the controller 1020 may control a signal flow between blocks to perform an operation according to the above-described flowchart.
- the storage unit 1030 may store at least one of information transmitted and received through the transceiver 1010 and information generated through the control unit 1020 .
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
- Communication Control (AREA)
Abstract
Description
Claims (14)
- 무선 통신 시스템에서 단말의 방법에 있어서,설정된 그랜트(configured grant, CG)가 우선화되지 않은(de-prioritized) 상향링크 그랜트인 것을 확인하는 단계;상기 de-prioritized 상향링크 그랜트에 자동 전송이 설정되었는지 확인하는 단계; 및상기 de-prioritized 상향링크 그랜트에 자동 전송이 설정되었으면, 상기 de-prioritized 상향링크 그랜트의 대응되는 HARQ(hybrid automatic repeat request) 프로세스에 대하여 구동중인 CG 타이머 및 상기 대응되는 HARQ 프로세스에 대하여 구동중인 CG 재전송 타이머를 중지하는 단계를 포함하는 것을 특징으로 하는 단말의 방법.
- 제1항에 있어서, 상기 CG가 상기 de-prioritized 상향링크 그랜트인 것을 확인하는 단계는,상기 CG보다 높은 우선순위를 갖는 dynamic grant, 상기 CG보다 높은 우선순위를 갖는 다른 CG, 또는 상기 CG보다 높은 우선순위를 갖는 스케줄링 요청(scheduling request, SR) 전송을 위한 자원이 상기 CG의 전송과 겹치는 것을 확인하는 단계를 포함하는 것을 특징으로 하는 단말의 방법.
- 제1항에 있어서,상기 CG가 상기 de-prioritized 상향링크 그랜트인 것으로 확인되면, 상기 CG의 대응되는 HARQ 프로세스를 pending이 아닌 상태로 설정하는 단계를 더 포함하는 것을 특징으로 하는 단말의 방법.
- 제3항에 있어서,상기 de-prioritized 상향링크 그랜트에 대한 자동 전송을 수행하는 단계를 더 포함하는 것을 특징으로 하는 단말의 방법.
- 제4항에 있어서,상기 자동 전송은, 상기 de-prioritized 상향링크 그랜트의 다음 전송 자원에서 수행되는 것을 특징으로 하는 단말의 방법.
- 제1항에 있어서,기지국으로부터, 상기 자동 전송을 설정하는 제1 정보, 상기 CG 타이머에 대한 제2 정보 및 상기 CG 재전송 타이머에 대한 제3 정보를 수신하는 단계를 더 포함하는 것을 특징으로 하는 단말의 방법.
- 제1항에 있어서,논리채널 기반 우선화를 설정하는 정보를 수신하는 단계를 더 포함하는 것을 특징으로 하는 단말의 방법.
- 무선 통신 시스템에서 단말에 있어서,송수신부; 및설정된 그랜트(configured grant, CG)가 우선화되지 않은(de-prioritized) 상향링크 그랜트인 것을 확인하고; 상기 de-prioritized 상향링크 그랜트에 자동 전송이 설정되었는지 확인하며; 및 상기 de-prioritized 상향링크 그랜트에 자동 전송이 설정되었으면, 상기 de-prioritized 상향링크 그랜트의 대응되는 HARQ(hybrid automatic repeat request) 프로세스에 대하여 구동중인 CG 타이머 및 상기 대응되는 HARQ 프로세스에 대하여 구동중인 CG 재전송 타이머를 중지하는 제어부를 포함하는 것을 특징으로 하는 단말.
- 제8항에 있어서, 상기 제어부는,상기 CG보다 높은 우선순위를 갖는 dynamic grant, 상기 CG보다 높은 우선순위를 갖는 다른 CG, 또는 상기 CG보다 높은 우선순위를 갖는 스케줄링 요청(scheduling request, SR) 전송을 위한 자원이 상기 CG의 전송과 겹치는 것을 확인하면, 상기 CG가 상기 de-prioritized 상향링크 그랜트인 것으로 확인하는 것을 특징으로 하는 단말.
- 제8항에 있어서, 상기 제어부는,상기 CG가 상기 de-prioritized 상향링크 그랜트인 것으로 확인되면, 상기 CG의 대응되는 HARQ 프로세스를 pending이 아닌 상태로 설정하는 것을 특징으로 하는 단말.
- 제10항에 있어서, 상기 제어부는,상기 de-prioritized 상향링크 그랜트에 대한 자동 전송을 수행하는 것을 특징으로 하는 단말.
- 제11항에 있어서,상기 자동 전송은, 상기 de-prioritized 상향링크 그랜트의 다음 전송 자원에서 수행되는 것을 특징으로 하는 단말.
- 제8항에 있어서,상기 제어부는, 기지국으로부터, 상기 자동 전송을 설정하는 제1 정보, 상기 CG 타이머에 대한 제2 정보 및 상기 CG 재전송 타이머에 대한 제3 정보를 수신하도록 상기 송수신부를 제어하는 것을 특징으로 하는 단말.
- 제8항에 있어서, 상기 제어부는,논리채널 기반 우선화를 설정하는 정보를 수신하도록 상기 송수신부를 제어하는 것을 특징으로 하는 단말.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP22775966.9A EP4280777A4 (en) | 2021-03-22 | 2022-03-15 | METHOD AND APPARATUS FOR COEXISTENCE OF AUTOMATIC TRANSMISSION AND CG RETRANSMISSION |
US18/547,411 US20240129916A1 (en) | 2021-03-22 | 2022-03-15 | Method and device for coexistence of automatic transmission and cg retransmission |
CN202280023269.4A CN117063588A (zh) | 2021-03-22 | 2022-03-15 | 用于自动传输与cg重传共存的方法及设备 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2021-0036907 | 2021-03-22 | ||
KR1020210036907A KR20220131773A (ko) | 2021-03-22 | 2021-03-22 | 자동전송과 cg 재전송의 공존을 위한 방법 및 장치 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022203264A1 true WO2022203264A1 (ko) | 2022-09-29 |
Family
ID=83397656
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2022/003597 WO2022203264A1 (ko) | 2021-03-22 | 2022-03-15 | 자동전송과 cg 재전송의 공존을 위한 방법 및 장치 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20240129916A1 (ko) |
EP (1) | EP4280777A4 (ko) |
KR (1) | KR20220131773A (ko) |
CN (1) | CN117063588A (ko) |
WO (1) | WO2022203264A1 (ko) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20200053799A1 (en) * | 2018-08-09 | 2020-02-13 | Comcast Cable Communications, Llc | Supplementary uplink for random access procedures |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11291048B2 (en) * | 2019-02-07 | 2022-03-29 | Ofinno, Llc | Listen before talk |
EP3963786B1 (en) * | 2019-05-02 | 2023-12-27 | LG Electronics Inc. | Method and apparatus for stopping a configured grant timer before expiration in wireless communication system |
-
2021
- 2021-03-22 KR KR1020210036907A patent/KR20220131773A/ko unknown
-
2022
- 2022-03-15 WO PCT/KR2022/003597 patent/WO2022203264A1/ko active Application Filing
- 2022-03-15 US US18/547,411 patent/US20240129916A1/en active Pending
- 2022-03-15 CN CN202280023269.4A patent/CN117063588A/zh active Pending
- 2022-03-15 EP EP22775966.9A patent/EP4280777A4/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20200053799A1 (en) * | 2018-08-09 | 2020-02-13 | Comcast Cable Communications, Llc | Supplementary uplink for random access procedures |
Non-Patent Citations (5)
Title |
---|
ASUSTEK: "Phase-1 Summary of [AT113-e][024][IIOT] User Plane II (Asus)", 3GPP DRAFT; R2-2102318, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. electronic; 20210125 - 20210205, 10 February 2021 (2021-02-10), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051978037 * |
CATT: "Handling of deprioritized CG PDU when both cg-RetransmissionTimer and lch- basedPrioritization are configured", 3GPP DRAFT; R2-2100217, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. Online; 20210125 - 20210205, 15 January 2021 (2021-01-15), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051973425 * |
LENOVO, MOTOROLA MOBILITY: "Enhancements for URLLC in unlicensed controlled environments", 3GPP DRAFT; R2-2100921, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. electronic; 20210125 - 20210205, 14 January 2021 (2021-01-14), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051972753 * |
NOKIA, NOKIA SHANGHAI BELL: "Configuration of AutonomousTX and cg-retransmission timer", 3GPP DRAFT; R2-2100712, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. Electronic; 20210125 - 20210205, 14 January 2021 (2021-01-14), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051972712 * |
See also references of EP4280777A4 * |
Also Published As
Publication number | Publication date |
---|---|
US20240129916A1 (en) | 2024-04-18 |
EP4280777A1 (en) | 2023-11-22 |
KR20220131773A (ko) | 2022-09-29 |
CN117063588A (zh) | 2023-11-14 |
EP4280777A4 (en) | 2024-06-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2016182375A1 (ko) | D2d 통신을 지원하는 무선 통신 시스템에서 자원 할당 방법 및 장치 | |
WO2012128511A2 (ko) | 무선 통신 시스템에서 버퍼상태보고를 전송하는 방법 및 장치 | |
WO2011126261A2 (ko) | 이동통신시스템에서 역방향 송수신 방법 및 장치 | |
KR20080025132A (ko) | 채널 할당 방법, 무선통신시스템, 및 무선구간의 채널 구조 | |
WO2020197313A1 (en) | Method and apparatus of indicating alternative resource at collision of configured grants | |
WO2015012614A1 (en) | Apparatus and method for effective multi-carrier multi-cell scheduling in mobile communication system | |
CN115066966A (zh) | 支持侧链路中继的逻辑通道优先级排序方法 | |
WO2021182770A1 (ko) | 이동통신 시스템에서 mbs 설정과 수신을 위한 방법 및 장치 | |
WO2021101280A1 (en) | Method and apparatus of retransmission using adjacent configured grant resource in wireless communication system | |
EP3858045A1 (en) | Method and apparatus of indicating alternative resource at collision of configured grants | |
WO2020197219A1 (ko) | 스케쥴링 요청을 하는 방법 및 장치 | |
WO2021206396A1 (en) | Method and apparatus for intra-ue prioritization considering ul grant received in random access response | |
WO2021066460A1 (ko) | 우선 순위 값을 가진 mac ce를 포함한 논리 채널 우선화 방법 및 장치 | |
US11800526B2 (en) | Method and device for performing uplink status report for low latency in next-generation mobile communication system | |
US20210100010A1 (en) | Method and apparatus for transmitting scheduling request in mobile communication system | |
WO2022203264A1 (ko) | 자동전송과 cg 재전송의 공존을 위한 방법 및 장치 | |
WO2021091311A1 (ko) | 무선통신시스템에서 논리 채널 제한을 적용하는 방법 및 장치 | |
WO2023068560A1 (ko) | 동시 셀 전송을 고려한 전송 데이터 선택 방법 및 장치 | |
WO2021145686A1 (ko) | 무선통신시스템에서 무선자원의 우선순위 값을 결정하는 방법 및 장치 | |
WO2021201560A1 (en) | Method and apparatus to perform autonomous retransmission considering reactivated configured grant | |
WO2023211053A1 (ko) | 상향링크 drx 타이머의 비우선화 영향을 위한 방법 및 장치 | |
WO2021101179A1 (ko) | 무선 통신 시스템에서 논리채널제한을 적용하는 방법 및 장치 | |
WO2021091276A1 (ko) | 무선 통신 시스템에서 다중엔트리 configured grant 확인 메시지 전송을 위한 방법 및 장치 | |
WO2021060867A1 (ko) | Mac ce의 우선순위를 고려한 데이터 전송 방법 및 장치 | |
KR20230056578A (ko) | 동시 셀 전송을 고려한 전송 데이터 선택 방법 및 장치 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 22775966 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 18547411 Country of ref document: US |
|
ENP | Entry into the national phase |
Ref document number: 2022775966 Country of ref document: EP Effective date: 20230817 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 202280023269.4 Country of ref document: CN |
|
NENP | Non-entry into the national phase |
Ref country code: DE |