CN111901888B - A repeated transmission method, device, equipment and storage medium - Google Patents
A repeated transmission method, device, equipment and storage medium Download PDFInfo
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- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H—ELECTRICITY
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- H04W—WIRELESS COMMUNICATION NETWORKS
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Abstract
本申请提出一种重复传输方法、装置、设备和存储介质，包括：配置传输块TB的重复次数K；在当前配置授权传输周期内的重复次数m小于重复次数K的情况下，利用动态授权调度第二通信节点传输剩余K‑m次传输，其中，所述传输包括重复传输或重传传输，K大于1，m大于0且小于K。
The present application proposes a repeated transmission method, apparatus, device and storage medium, including: configuring the number of repetitions K of a transmission block TB; when the number of repetitions m in a currently configured authorized transmission period is less than the number of repetitions K, using dynamic authorization to schedule the second communication node to transmit the remaining K‑m transmissions, wherein the transmission includes repeated transmission or retransmission, K is greater than 1, and m is greater than 0 and less than K.
Description
Technical Field
The present application relates to the field of wireless communication networks, and in particular, to a retransmission method, apparatus, device, and storage medium.
Background
The fifth generation mobile communication technology (the 5th Generation mobile communication technology,5G) system has put forward new demands on technical indexes such as higher speed, huge amount of links, ultra-low time delay, higher reliability, hundred times of energy efficiency improvement and the like. Unlicensed spectrum access (NR-based Access to Unlicensed Spectrum, NR-U) technology based on New air interface (NR) has wide application prospect in the aspects of Internet of things, factory automation and the like. However, many problems with current NR-U's result in low reliability of data transmission.
Disclosure of Invention
The application provides a method, a device, a system and a storage medium for repeated transmission.
In a first aspect, an embodiment of the present application provides a retransmission method, where the method is applied to a first communication node, and includes:
Configuring the repetition number K of the transmission block TB;
And under the condition that the repetition number m in the current configuration authorized transmission period is smaller than the repetition number K, the second communication node is scheduled to transmit the residual K-m times of transmission by utilizing dynamic authorization, wherein the transmission comprises repeated transmission or retransmission transmission, K is larger than 1, and m is larger than 0 and smaller than K.
In a second aspect, an embodiment of the present application provides a retransmission method, where the method is applied to a second communication node, and includes:
And under the condition that the repetition number m in the current configuration authorized transmission period is smaller than the repetition number K, transmitting the residual K-m times of transmission by utilizing a pre-configured transmission resource, wherein K is larger than 1, m is larger than 0 and smaller than K, and the transmission is repeated transmission or retransmission transmission.
In a third aspect, an embodiment of the present application provides a retransmission apparatus, including:
A configuration module configured to configure a repetition number K of the transport block TB;
And the scheduling module is configured to schedule the second communication node to transmit the remaining K-m times of transmission by using the dynamic authorization under the condition that the repetition number m in the current configuration authorization transmission period is smaller than the repetition number K, wherein the transmission comprises repeated transmission or retransmission transmission, K is larger than 1, and m is larger than 0.
In a fourth aspect, an embodiment of the present application provides a retransmission apparatus, including:
And the transmission module is configured to transmit the residual K-m times of transmission by using the pre-configured transmission resource under the condition that the repetition number m in the current configuration authorized transmission period is less than the repetition number K, wherein K is greater than 1, m is greater than 0, and the transmission is repeated transmission or retransmission transmission.
In a fifth aspect, an embodiment of the present application provides an apparatus, including:
One or more processors;
a memory for storing one or more programs;
the one or more programs, when executed by the one or more processors, cause the one or more processors to implement, for example, any of the methods of the embodiments of the present application.
In a sixth aspect, embodiments of the present application provide a storage medium storing a computer program which, when executed by a processor, implements any of the methods of the embodiments of the present application.
With respect to the above embodiments and other aspects of the application and implementations thereof, further description is provided in the accompanying drawings, detailed description and claims.
Drawings
Fig. 1 is a schematic structural diagram of a wireless network system according to an embodiment of the present application;
fig. 2 is a schematic flow chart of a repeated transmission method according to an embodiment of the present application;
fig. 3 is a schematic flow chart of a repeated transmission method according to an embodiment of the present application;
Fig. 4 is a schematic diagram of dynamic grant scheduling K-m retransmissions provided in an embodiment of the present application;
FIG. 5 is a schematic diagram of another dynamic grant scheduling K-m retransmissions provided by an embodiment of the present application;
FIG. 6 is a schematic diagram of transmission of remaining K-m transmissions using immediately adjacent CG resources, as provided by an embodiment of the application;
Fig. 7 is a schematic structural diagram of a retransmission apparatus according to an embodiment of the present application;
fig. 8 is a schematic diagram of a retransmission apparatus according to an embodiment of the present application;
Fig. 9 is a schematic structural diagram of an apparatus according to an embodiment of the present application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, embodiments of the present application will be described in detail hereinafter with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be arbitrarily combined with each other.
The steps illustrated in the flowchart of the figures may be performed in a computer system, such as a set of computer-executable instructions. Also, while a logical order is depicted in the flowchart, in some cases, the steps depicted or described may be performed in a different order than presented herein.
The technical solution of the present application may be applied to various communication systems, such as a global system for mobile communications (Global System of Mobile communication, GSM) system, a code division multiple access (Code Division Multiple Access, CDMA) system, a wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, a General Packet Radio Service (GPRS), a long term evolution (Long Term Evolution, LTE) system, an LIE-a (Advanced long term evolution ) system, a universal mobile telecommunications system (Universal Mobile Telecommunication System, UMTS), and a 5G system, etc., but the embodiments of the present application are not limited thereto. In the present application, a 5G system is described as an example.
The embodiment of the application can be used for wireless networks with different systems. The radio access network may comprise different communication nodes in different systems. Fig. 1 is a schematic structural diagram of a wireless network system according to an embodiment of the present application. As shown in fig. 1, the wireless network system 100 includes a base station 101, a user equipment 110, a user equipment 120, and a user equipment 130. Base station 101 is in wireless communication with user device 110, user device 120, and user device 130, respectively.
First, it should be noted that, in the embodiment of the present application, the base station may be a device capable of communicating with the user terminal. The base station may be any device having a wireless transceiving function. Including but not limited to base stations NodeB, evolved base stations eNodeB, base stations in 5G communication systems, base stations in future communication systems, access nodes in WiFi systems, wireless relay nodes, wireless backhaul nodes, etc. The base station may also be a wireless controller in a cloud wireless access network (cloud radioaccess network, CRAN) scenario, the base station may also be a small station, a transmission node (transmission reference point, TRP), etc., and the embodiment of the present application is not limited.
In the embodiment of the application, the user terminal is equipment with a wireless receiving and transmitting function, which can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted, on water surface (such as a ship and the like), and in air (such as an airplane, a balloon, a satellite and the like). The user terminal may be a mobile phone, a tablet (Pad), a computer with wireless transceiving function, a Virtual Reality (VR) terminal, an augmented Reality (Augmented Reality, AR) terminal, a wireless terminal in industrial control (industrial control), a wireless terminal in unmanned (SELF DRIVING), a wireless terminal in remote medical (remote) treatment, a wireless terminal in smart grid (SMART GRID), a wireless terminal in transportation security (transportation safety), a wireless terminal in smart city (SMART CITY), a wireless terminal in smart home (smart home), etc. The embodiment of the application does not limit the application scene. A user terminal may also be referred to as a terminal, access terminal, UE unit, UE station, mobile station, remote terminal, mobile device, UE terminal, wireless communication device, UE agent, UE apparatus, or the like. The embodiments of the present application are not limited.
Currently, the first stage of standardization work of the fifth generation mobile communication technology (the 5th Generation mobile communication technology,5G), which may also be referred to as New Radio (NR)), has been completed. From the trend of standard formulation and technology development, 5G systems are dedicated to research on technical indexes such as higher rate (Gbps), huge amount of links (1M/Km 2), ultra-low time delay (1 ms), higher reliability, hundred times of energy efficiency improvement and the like to support new demand changes. The NR-based unlicensed spectrum access (NR-based Access to Unlicensed Spectrum, NR-U) technology has great application prospects in various aspects of Internet of things, factory automation and the like, but the NR-U technology still faces a plurality of problems to be solved at present.
NR-U supports configuration grant (configured grant, CG) transmissions in which each Uplink (UL) data transmission by a User Equipment (UE) need not be accompanied by a base station to send scheduling control information, as well as non-scheduled (GRANT FREE, GF) transmissions or Semi-scheduled (Semi-PERSISTENT SCHEDULING, SPS) transmissions, similar to CG transmissions. In CG transmission, K repeated transmissions may be configured, and the UE may use CG resources to transmit the same Transport Block (TB) K times to ensure indexes such as reliability and delay of the transport block.
Due to the influence of the arrival time of the service data and the actual available starting position of CG resources, the transmission resources actually available to the UE may not complete K repeated transmissions, and in order to ensure the index requirement of the service data, a scheme for ensuring K transmissions and determining the RV sequence of the K transmissions needs to be determined in the NR-U, and no scheme for solving the problem is currently available. The application proposes a feasibility scheme for ensuring K transmissions and determining the RV sequence for K transmissions.
In an embodiment, the present application provides a retransmission method, and fig. 2 is a schematic flow chart of the retransmission method provided in the embodiment of the present application. The method can be suitable for the situation of repeated transmission between the base station and the terminal. The method may be performed by a retransmission means provided by the present application, which may be implemented in software and/or hardware, the method being applied in the first communication node.
As shown in fig. 2, the repeated transmission method provided in the embodiment of the present application mainly includes steps S21 and S22.
S21, configuring the repetition number K of the transmission block TB.
S22, under the condition that the repetition number m in the current configuration authorized transmission period is smaller than the repetition number K, the second communication node is scheduled to transmit the residual K-m times of transmission by utilizing dynamic authorization, wherein the transmission comprises repeated transmission or retransmission transmission, K is larger than 1, and m is larger than 0 and smaller than K.
In this embodiment, the first communication node may be any of the base stations described above. In the present embodiment, the repetition number K is configured by the base station. The specific configuration is not limited in this embodiment. The repetition number m refers to the number of times that the ue has repeated transmission for one TB in the currently configured grant transmission period.
It should be noted that K and m are integers.
Further, the step of using the dynamic grant to schedule the second communication node to transmit the remaining K-m transmissions may be understood as that the base station sends a dynamic grant scheduling message to the user terminal, where the dynamic grant scheduling message is used to instruct the UE to transmit transmission resources used for the remaining K-m transmissions.
In an exemplary embodiment, the scheduling of the second communication node to transmit the remaining K-m transmissions with dynamic grant includes scheduling the second communication node to transmit the remaining K-m transmissions with dynamic grant after the currently configured grant transmission period has available resources.
In one exemplary embodiment, the second communication node is scheduled to transmit the remaining K-m transmissions using dynamic grants, including decoding the first m repetitions and, in the event that the first m repetitions fail to properly decode the TB, scheduling the second communication node to transmit the remaining K-m retransmissions using dynamic grants.
In this embodiment, after receiving m repetitions, the base station decodes the first m repetitions, and the first m repetitions may correctly decode the TB, the base station does not schedule the remaining K-m transmissions of the TB.
The first m repeated transmissions may correctly decode the TB including one or more of:
correctly decoding the TB using 1 repetition;
the TB is correctly decoded using multiple repetition combining.
In one exemplary embodiment, where the second communication node is scheduled to transmit the remaining K-m transmissions with dynamic grant, the redundancy version RV of the first m repetitions and the RV of the remaining K-m transmissions based on dynamic grant scheduling are determined based on the RV pattern.
In an exemplary embodiment, the RV pattern is configured by radio resource control, RRC, signaling or indicated by control information that activates configuration grant transmission resources.
In an exemplary embodiment, the RV of the first m repetitions and the RV of the remaining K-m transmissions based on dynamic grant scheduling are determined based on an RV pattern, including that the RV of the first m repetitions and the RV of the K-m transmissions based on dynamic grant scheduling collectively follow the RV pattern.
In one exemplary embodiment, the RV of the first m repetitions and the RV of the remaining K-m transmissions based on dynamic grant scheduling are determined based on an RV pattern, including that the RV of the last repetition of the first m repetitions and the K-m transmissions based on dynamic grant scheduling collectively follow the RV pattern.
In an exemplary embodiment, the RV of the first m repetitions and the RV of the remaining K-m transmissions based on dynamic grant scheduling are determined based on an RV pattern, including determining the RV of the K-m transmissions based on the dynamic grant scheduling following the RV pattern.
In an exemplary embodiment, the RV of the first m repetitions is selected in the RV pattern.
In an exemplary embodiment, the RV used for the first transmission of the K-m transmissions is selected by the first communication node in the RV pattern, and the remaining K-m-1 transmissions are determined based on the RV indicated by the dynamic grant scheduling information and the RV pattern.
In an exemplary embodiment, a feedback indication is sent to the second communication node, wherein in case the feedback indication is in the first state, the second communication node transmits K-m retransmissions using the earliest available transmission resource in the immediately next configuration grant transmission period.
In an exemplary embodiment, the feedback indication is a first state comprising one of:
the first m repetitions failing to decode the TB correctly;
No data transmitted by the second communication node is received.
In an embodiment, the present application provides a retransmission method, and fig. 3 is a schematic flow chart of the retransmission method provided in the embodiment of the present application. The method can be suitable for the situation of repeated transmission between the base station and the terminal. The method may be performed by a retransmission apparatus provided by the present application, which may be implemented in software and/or hardware, and the method is applied in the second communication node.
As shown in fig. 3, the repeated transmission method provided in the embodiment of the present application mainly includes step S31.
S31, under the condition that the repetition number m in the current configuration authorized transmission period is smaller than the repetition number K, the remaining K-m times of transmission are transmitted by utilizing a preconfigured transmission resource, wherein K is larger than 1, m is larger than 0 and smaller than K, and the transmission is repeated transmission or retransmission transmission.
In this embodiment, the second communication node may be any one of the user terminals described above. In the present embodiment, the repetition number K is configured by the base station. The specific configuration is not limited in this embodiment.
In one exemplary embodiment, transmitting the remaining K-m transmissions using the pre-configured transmission resources includes transmitting the remaining K-m transmissions based on the dynamically authorized scheduling configured transmission resources.
In one exemplary embodiment, transmitting the remaining K-m transmissions based on the dynamically granted scheduling configured transmission resources includes transmitting the remaining K-m transmissions based on the dynamically granted scheduling configured transmission resources after the currently configured granted transmission period of available resources.
In one exemplary embodiment, transmitting the remaining K-m transmissions based on the dynamically granted scheduling configured transmission resources includes transmitting the remaining K-m retransmissions based on the dynamically granted scheduling configured transmission resources in the event that the first communication node cannot properly decode the TB using the previous m repetitions.
In one exemplary embodiment, transmitting the remaining K-m transmissions using the pre-configured transmission resources includes transmitting the K-m transmissions using the configured grant transmission resources of the next configured grant transmission period.
In an exemplary embodiment, the transmitting K-m transmissions with the configuration grant transmission resources of the next configuration grant transmission period includes transmitting K-m retransmissions with the configuration grant transmission resources of the immediately next configuration grant transmission period, where the feedback indication is sent by the first communication node, if the feedback indication is the first state.
In one exemplary embodiment, K-m retransmissions are transmitted using the earliest available configuration grant transmission resource in the immediately next configuration grant transmission period.
In an exemplary embodiment, the feedback indication is a first state comprising one of:
the first m repetitions failing to decode the TB correctly;
No data transmitted by the second communication node is received.
In an exemplary embodiment, the transmitting K-m transmissions using the configuration grant transmission resources of the next configuration grant transmission period includes transmitting K-m transmissions using the configuration grant transmission resources of the immediately next configuration grant transmission period without receiving a feedback indication and without receiving a dynamic grant schedule.
In an exemplary embodiment, the retransmission timer ends at the configuration grant transmission resource start position of the next configuration grant transmission period.
In an exemplary embodiment, the retransmission timer is used to define a minimum timing between the first transmission and the retransmission, the retransmission timer is indicated by RRC signaling configuration or downlink control information DCI, and the retransmission timer has a value range smaller than the configuration grant transmission period.
In an exemplary embodiment, the transmitting K-m transmissions using the configuration grant transmission resources of the immediately next configuration grant transmission period includes transmitting K-m repetitions using the earliest available configuration grant transmission resource in the immediately next configuration grant transmission period.
In one example application, a method of ensuring K duplicate transmissions is provided. Note that, the subsequent embodiments will be described taking CG transmission as an example, but the repetitive transmission method in this embodiment is not limited to CG transmission. But also to GF transmission, SPS transmission, etc.
According to index requirements such as service type and reliability, CG transmission is configured with K times of repeated transmission, and due to the influence of arrival time of service data to be transmitted and the actual available starting position of CG resources, the residual CG resources in the current CG period may not ensure that a certain TB can transmit K times, and the reliability of the TB is affected when the transmission repetition number of the TB is not up to K times, and in order to ensure indexes such as the reliability of TB transmission, the K times of transmission of the TB needs to be ensured.
CG configures each TB to transmit K repetitions, the UE transmits m repetitions of a certain TB using the CG resources available in the current configuration grant period, where K >1,0< m < K. The following scheme may be used to ensure K transmissions of the TB:
after CG resources, the base station schedules UE transmissions, which may be repeated transmissions or retransmitted transmissions, for the remaining K-m times using dynamic grants.
Preferably, after receiving m repetitions, the base station decodes the first m repetitions, and if the first m repetitions cannot correctly decode the TB, the base station uses dynamic grant scheduling to schedule the remaining K-m retransmissions.
For example, when CG transmission configuration k=4 and the ue transmits the TB, the currently available CG resources may only be transmitted 2 repetitions, i.e. m=2.
Fig. 4 is a schematic diagram of dynamic grant scheduling K-m retransmissions provided in an embodiment of the present application. As shown in fig. 4, the UE uses CG resources (indicated by the rectangular box filled with oblique lines in fig. 4) to transmit 2 repetitions of the TB, CG R1 (CG repetition 1, CG R1) and CG R2 (CG repetition 2, CG R2), respectively, there are no other resources available for the TB transmission in the current CG period, and in order to ensure K transmissions, 2 transmissions to be transmitted are scheduled after the CG resources using dynamic grant (DYNAMIC GRANT, abbreviated as DG) signaling DCI, and the UE uses dynamic grant resources (indicated by the rectangular box filled with dot lines in fig. 4) to transmit 2 transmissions to be transmitted, DG T1 (DG transmission 1, DG T1) and DG T2 (DG transmission 2, DG T2), respectively.
Fig. 5 is a schematic diagram of another dynamic grant scheduling K-m retransmissions provided by an embodiment of the present application. As shown in fig. 5, the UE uses CG resources (represented by rectangular boxes filled with oblique lines in fig. 5) to transmit 2 repetitions of the TB, CG R1 and CG R2, respectively, no other resources are available for the TB transmission in the current CG period, the base station receives the 2 repetitions of the transmission and decodes the TB, and if the base station does not successfully decode the TB according to the received 2 repetitions of the transmission, the base station schedules the 2 transmissions to be transmitted through the scheduling grant signaling DCI, and the UE uses dynamic grant resources (represented by rectangular boxes filled with dots in fig. 5) to transmit the 2 transmissions to be transmitted, DG T1 and DG T2, respectively.
In one example application, a method of redundancy version determination is provided.
The TBs of UE uplink traffic data are carried by a Physical Uplink Shared Channel (PUSCH) with a corresponding redundancy version (redundancy version, RV) for each transmission of each TB. In CG transmissions of NR-U, each CG-PUSCH transmission contains CG uplink control information (CG uplink control information, CG-UCI) that may carry the RV used for the current CG-PUSCH transmission. Each repeated RV of the TB transmissions using CG resources may follow one RV pattern according to a sequence, which may be configured by radio resource control (Radio Resource Control, RRC) information or indicated by downlink control information (downlink control information, DCI for short) activating CG resources. If the RV pattern is {0,2,3,1} and k=4, the RV used for 4 repetitions of transmission using CG resources is 0,2,3, and 1, respectively.
As described in the above embodiment, CG configures each TB to transmit K repetitions, UE transmits m repetitions of a certain TB using available CG resources in the current period, transmits K-m transmissions to be transmitted based on dynamic grant scheduling, where K >1,0< m < K, and the m repetitions and RV of K-m transmissions based on dynamic grant scheduling may be determined according to one of the following schemes:
the m repetitions and the K-m transmissions based on dynamic grant scheduling collectively follow the RV pattern to determine an RV for the K transmissions;
the last repetition of the m repetitions together with K-m transmissions based on dynamic grant scheduling follows the RV pattern to determine the RV for the K-m transmissions;
The base station can preferably autonomously select the initial RV of the K-m transmission of the dynamic authorization scheduling and inform UE (user equipment) through the dynamic authorization scheduling information, namely, the RV used by the first transmission in the K-m transmission is autonomously selected in the RV pattern by the base station.
For example, CG transmission configuration k=4, the CG resources available when the ue transmits the current TB may be transmitted only 2 repetitions, i.e. m=2, based on the number of dynamic grant scheduling K-m=2, rv pattern {0,2,3,1}.
In scheme 1, the 4 transmissions are CG R1, CG R2, DG T1 and DG T2 respectively and follow RV patterns {0,2,3,1}, that is, CG-UCI of each of two transmissions CG R1 and CG R2 transmitted by CG resources indicates that RV of the two transmissions is 0 and 2 respectively, the base station determines that dynamic grant signaling DCI indicates that RV is 3 according to the received repeated RV and the RV patterns, that is, indicates that RV used by DG T1 is 3, and determines that RV used by DG T1 is 1 according to the RV patterns {0,2,3,1} and RV indicated by DCI is 3.
In the scheme 2, the 4 transmissions are CG R1, CG R2, DG T1 and DG T2 respectively, two repetitions of CG R1 and CG R2 transmitted by CG resources are used to autonomously determine the RV used by the UE, the range of the RV used by the UE to autonomously determine is limited within the RV pattern, that is, the RV used by the CG R1 and CG R2 to autonomously determine is selected from RV patterns {0,2,3,1}, and the base station determines the RV indicated by the dynamic grant signaling DCI according to the received CG R2 and the RV pattern, if the CG-UCI indicates that the RV of CG R2 is 3, the base station indicates 1 through the dynamic grant signaling DCI, that is, indicates 1 as RV used by the CG T1, and determines 0 as RV used by the CG T2 according to the RV patterns {0,2,3,1} and the RV indicated by the DCI.
In the scheme 3, the 4 transmissions are CG R1, CG R2, DG T1 and DG T2, respectively, the UE autonomously decides the RV to be used by using the two repetitions of CG R1 and CG R2 of CG resource transmission, and the base station determines the RV sequence to be used by the scheduled K-m=2 transmissions according to the RV pattern, that is, the base station indicates that RV is 0 through DCI, that is, indicates that RV to be used by DG T1 is 0, determines that RV to be used by DG T2 according to the RV pattern {0,2,3,1} and RV indicated by DCI is 0, and preferably, the base station comprehensively considers the current situation to decide any RV in the DCI indication pattern, that is, indicates that RV to be used by DG T1 is 2, and determines that RV to be used by DG T2 according to RV pattern {0,2,3,1} and RV indicated by DCI is 2.
In one example application, a method of ensuring K duplicate transmissions is provided.
According to the index requirements of service type, reliability and the like, the CG transmission is configured with K times of repeated transmission, and due to the influence of the arrival time of service data to be transmitted and the actual available starting position of CG resources, the residual CG resources can not ensure that a certain TB can transmit K times, and the reliability of the TB can be influenced when the transmission repetition number of the TB is not up to K times, and in order to ensure the indexes of the reliability and the like of the TB transmission, the K times of transmission of the TB needs to be ensured.
CG configures each TB to transmit K repetitions, the UE transmits m repetitions of a certain TB using the CG resources available in the current configuration grant period, where K >1,0< m < K, K transmissions of the TB may be ensured using one of the following schemes:
Before the next CG period of resources arrives, the UE receives a CG downlink feedback indication (CG downlink feedback information, CG-DFI) that the TB is decoded in error, and then the UE uses the CG resources of the next CG period to transmit K-m retransmissions.
Preferably, the UE transmits K-m retransmissions using CG resources that are earliest available in the immediately next CG period.
Before the next CG period resource arrives, the UE does not receive a CG-DFI and does not receive a dynamic grant to schedule retransmission of the TB, and then the UE uses the CG resource of the next CG period to transmit K-m transmissions, where the transmissions are repeated transmissions or retransmission transmissions.
Preferably, the retransmission timer ends at the starting position of the resource of the next CG period, the UE transmits K-m retransmissions using the earliest CG resource of the immediately next CG period, where the retransmission timer is used to specify the minimum timing between the first transmission and the retransmission, and the retransmission timer is indicated by RRC signaling configuration or DCI, and the range of the retransmission timer value may be smaller than the CG period.
Preferably, the UE transmits the remaining K-m repetitions using the earliest available CG resources for the immediately next CG period.
For example, CG transmission configuration k=4, and CG resources available for the current CG period when the ue transmits the current TB may only be transmitted 2 repetitions, i.e. m=2.
Fig. 6 is a schematic diagram of remaining K-m transmissions using immediately adjacent CG resources, where in scheme 1, as shown in fig. 6, the UE uses available resources in the current CG period to transmit 2 repetitions of the TB, CG R1 and CG R2, respectively, no other resources available for the TB transmission are in the current CG period, and before immediately adjacent next CG period resources begin, the UE receives a CG-DFI to indicate that the TB is not successfully decoded, that is, to indicate that the TB decoding result is NACK, and then the UE uses available CG resources in the immediately adjacent next CG period to retransmit K-m=2 retransmissions, where the 2 retransmissions are CG R1-2 and CG R2-2, respectively, as shown in fig. 6.
Scheme 2 as shown in fig. 6, the UE uses the available resources of the current CG period to transmit 2 repetitions of the TB, CG R1 and CG R2 respectively, no other resources are available for the TB transmission in the current CG period, and before the immediately next CG period starts, the UE does not receive a CG-DFI and does not receive a dynamic grant to schedule the retransmission of the TB, and then the UE uses the earliest available CG resource of the next CG period to transmit K-m=2 transmissions, and as shown in fig. 6, the 2 transmissions are CG R1-2 and CG R2-2 respectively.
Preferably, the retransmission timer is ended at the starting position of the resource of the next CG period, and the UE uses the earliest CG resource of the immediately next CG period to transmit K-m retransmissions, and the 2 retransmissions are CG R1-2 and CG R2-2 respectively as shown in fig. 3.
Preferably, the UE transmits K-m=2 repetitions using the earliest available CG resource of the immediately next CG period, with the 2 repetitions being CG R1-2 and CG R2-2, respectively, as shown in fig. 6.
In an embodiment, the present application provides a retransmission apparatus, and fig. 7 is a schematic diagram of a retransmission apparatus according to an embodiment of the present application. The device can be suitable for the situation of repeated transmission between the base station and the terminal. The retransmission means may be implemented in software and/or hardware, said means being arranged in the first communication node.
As shown in fig. 7, the retransmission apparatus provided in the embodiment of the present application mainly includes a configuration module 71 and a scheduling module 72.
A configuration module 71 configured to configure the repetition number K of the transport block TB.
The scheduling module 72 is configured to schedule the second communication node to transmit the remaining K-m transmissions with dynamic grant, in case the number of repetitions m in the currently configured grant transmission period is smaller than the number of repetitions K, wherein the transmissions comprise repeated or retransmitted transmissions, K is larger than 1, m is larger than 0 and smaller than K.
In an exemplary embodiment, the scheduling module 72 is configured to schedule the second communication node to transmit the remaining K-m transmissions with dynamic grants after the currently configured grant transmission period has available resources.
In an exemplary embodiment, the scheduling module 72 is configured to decode the first m repetitions, and schedule the second communication node to transmit the remaining K-m retransmissions using dynamic grants in the event that the first m repetitions fail to properly decode the TB.
In an exemplary embodiment, the apparatus further comprises an RV determination module configured to determine, based on the RV pattern, a redundancy version RV for a first m-time repetition and an RV for a remaining K-m-time transmission based on dynamic grant scheduling if the second communication node is scheduled to transmit the remaining K-m-time transmission using dynamic grant.
In an exemplary embodiment, the RV pattern is configured by radio resource control, RRC, signaling or indicated by control information that activates configuration grant transmission resources.
In an exemplary embodiment, the RV determining module is configured such that the RV of the first m repetitions and the RV of the K-m transmissions based on dynamic grant scheduling collectively follow the RV pattern.
In an exemplary embodiment, the RV determining module is configured to jointly follow the RV pattern for the last of the first m repetitions and K-m transmissions based on dynamic grant scheduling.
In an exemplary embodiment, the RV determining module is configured to determine RVs for K-m transmissions based on dynamically grant scheduled K-m transmissions following the RV pattern.
In an exemplary embodiment, the RV of the first m repetitions is selected in the RV pattern.
In an exemplary embodiment, the RV used for the first transmission of the K-m transmissions is selected by the first communication node in the RV pattern, and the remaining K-m-1 transmissions are determined based on the RV indicated by the dynamic grant scheduling information and the RV pattern.
In an exemplary embodiment, the apparatus further comprises a sending module configured to send a feedback indication to the second communication node, wherein in case the feedback indication is in the first state, the second communication node transmits K-m retransmissions using the transmission resource that is earliest available in the immediately next configured grant transmission period.
In an exemplary embodiment, the feedback indication is a first state comprising one of:
the first m repetitions failing to decode the TB correctly;
No data transmitted by the second communication node is received.
The repeated transmission device provided in the embodiment can execute the repeated transmission method provided in any embodiment of the invention, and has the corresponding functional modules and beneficial effects of executing the method. Technical details not described in detail in this embodiment may be referred to the retransmission method provided in any embodiment of the present invention.
It should be noted that, in the embodiment of the repeating transmission device, each unit and module included are only divided according to the functional logic, but not limited to the above division, so long as the corresponding functions can be implemented, and the specific names of the functional units are only for convenience of distinguishing each other, and are not used for limiting the protection scope of the present application.
In an embodiment, the present application provides a retransmission apparatus, and fig. 8 is a schematic diagram of a retransmission apparatus according to an embodiment of the present application. The device can be suitable for the situation of repeated transmission between the base station and the terminal. The retransmission means may be implemented in software and/or hardware, said means being arranged in the second communication node.
As shown in fig. 8, the duplicate transmission apparatus provided in the embodiment of the present application mainly includes a transmission module 81.
A transmission module 81 configured to transmit the remaining K-m transmissions using the preconfigured transmission resources, where K is greater than 1, m is greater than 0 and less than K, in case the number of repetitions m in the currently configured authorized transmission period is less than the number of repetitions K, the transmissions being either repeated transmissions or retransmitted transmissions.
In an exemplary embodiment, the transmission module 81 is configured to transmit the remaining K-m transmissions based on the transmission resources configured by the dynamic grant scheduling.
In an exemplary embodiment, the transmission module 81 is configured to transmit the remaining K-m transmissions based on the dynamically granted scheduling configured transmission resources after the currently configured granted transmission period available resources.
In an exemplary embodiment, the transmission module 81 is configured to transmit the remaining K-m retransmissions based on the transmission resources of the dynamic grant scheduling configuration in case the first communication node cannot correctly decode the TB with the previous m repetitions.
In an exemplary embodiment, the transmission module 81 is specifically configured to transmit K-m transmissions using the configuration grant transmission resources of the next configuration grant transmission period.
In an exemplary embodiment, the transmission module 81 is configured to transmit K-m retransmissions with the configuration grant transmission resources of the immediately next configuration grant transmission period, in case the feedback indication is the first state, wherein the feedback indication is sent by the first communication node.
In one exemplary embodiment, K-m retransmissions are transmitted using the earliest available configuration grant transmission resource in the immediately next configuration grant transmission period.
In an exemplary embodiment, the feedback indication is a first state comprising one of:
the first m repetitions failing to decode the TB correctly;
No data transmitted by the second communication node is received.
In an exemplary embodiment, the transmission module 81 is configured to transmit K-m transmissions using the configuration grant transmission resources of the immediately next configuration grant transmission period in case no feedback indication is received and no dynamic grant schedule is received.
In an exemplary embodiment, the retransmission timer ends at the configuration grant transmission resource start position of the next configuration grant transmission period.
In an exemplary embodiment, the retransmission timer is used to define a minimum timing between the first transmission and the retransmission, the retransmission timer is indicated by RRC signaling configuration or downlink control information DCI, and the retransmission timer has a value range smaller than the configuration grant transmission period.
In an exemplary embodiment, the transmission module 81 is configured to transmit K-m repetitions with the earliest available configuration grant transmission resource in the immediately next configuration grant transmission period.
The receiving device provided in this embodiment can execute the repeated transmission method provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of executing the method. Technical details not described in detail in this embodiment may be referred to the retransmission method provided in any embodiment of the present invention.
It should be noted that, in the embodiment of the repeating transmission device, each unit and module included are only divided according to the functional logic, but not limited to the above division, so long as the corresponding functions can be implemented, and the specific names of the functional units are only for convenience of distinguishing each other, and are not used for limiting the protection scope of the present application.
The embodiment of the present application further provides an apparatus, fig. 9 is a schematic structural diagram of an apparatus provided in the embodiment of the present application, and as shown in fig. 9, the apparatus includes a processor 910, a memory 920, an input device 930, an output device 990 and a communication device 95, where the number of processors 910 in the apparatus may be one or more, in fig. 9, one processor 910 is taken as an example, and the processor 910, the memory 920, the input device 930 and the output device 990 in the apparatus may be connected by a bus or other manners, in fig. 9, which is taken as an example by a bus connection.
The memory 920 is used as a computer readable storage medium, and may be used to store a software program, a computer executable program, and a module, such as a program instruction/module corresponding to a retransmission method in an embodiment of the present application (for example, the configuration module 71 and the determination module 72 in the retransmission apparatus), and a program instruction/module corresponding to a retransmission method in an embodiment of the present application (for example, the transmission module 81 in the retransmission apparatus). The processor 910 executes various functional applications of the device and data processing, i.e., implements any of the methods provided by embodiments of the present application, by running software programs, instructions, and modules stored in the memory 920.
The memory 920 may mainly include a storage program area that may store an operating system, an application program required for at least one function, and a storage data area that may store data created according to the use of the device, etc. In addition, memory 920 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device. In some examples, memory 920 may further include memory located remotely from processor 910, which may be connected to the device via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The input means 930 may be used to receive input numeric or character information and to generate key signal inputs related to user settings and function control of the device. Output 990 may include a display device such as a display screen.
Communication device 950 may include a receiver and a transmitter. The communication device 950 is configured to perform information transceiving communication according to control of the processor 910.
It should be noted that, in the case where the above device is the first communication node, the processor 910 executes the program stored in the system memory 920, thereby performing various functional applications and data processing, for example, implementing the retransmission method provided by the embodiment of the present application, the method includes:
The number of repetitions K of the transport block TB is configured.
And under the condition that the repetition number m in the current configuration authorized transmission period is smaller than the repetition number K, the second communication node is scheduled to transmit the residual K-m times of transmission by utilizing dynamic authorization, wherein the transmission comprises repeated transmission or retransmission transmission, K is larger than 1, and m is larger than 0 and smaller than K.
Of course, those skilled in the art will appreciate that the processor 910 may also implement the technical solution of the retransmission method provided in any embodiment of the present application. The hardware structure and function of the apparatus can be explained with reference to the content of the present embodiment.
It should be noted that, in the case where the above device is the second communication node, the processor 910 executes the program stored in the system memory 920, thereby performing various functional applications and data processing, for example, implementing the retransmission method provided by the embodiment of the present application, the method includes:
And under the condition that the repetition number m in the current configuration authorized transmission period is smaller than the repetition number K, transmitting the residual K-m times of transmission by utilizing a pre-configured transmission resource, wherein K is larger than 1, m is larger than 0 and smaller than K, and the transmission is repeated transmission or retransmission transmission.
Of course, those skilled in the art will appreciate that the processor 910 may also implement the technical solution of the retransmission method provided in any embodiment of the present application. The hardware structure and function of the apparatus can be explained with reference to the content of the present embodiment.
Embodiments of the present application also provide a storage medium containing computer-executable instructions, which when executed by a computer processor, are for performing a repeat transmission method, the method comprising:
The number of repetitions K of the transport block TB is configured.
And under the condition that the repetition number m in the current transmission configuration authorization transmission period is smaller than the repetition number K, the second communication node is scheduled to transmit the residual K-m times of transmission by utilizing dynamic authorization, wherein the transmission comprises repeated transmission or retransmission transmission, K is larger than 1, and m is larger than 0 and smaller than K.
Of course, the storage medium containing the computer executable instructions provided in the embodiments of the present application is not limited to the method operations described above, and may also perform the related operations in the repeated transmission method provided in any embodiment of the present application.
Embodiments of the present application also provide a storage medium containing computer-executable instructions, which when executed by a computer processor, are for performing a repeat transmission method, the method comprising:
And under the condition that the repetition number m in the current configuration authorized transmission period is smaller than the repetition number K, transmitting the residual K-m times of transmission by utilizing a pre-configured transmission resource, wherein K is larger than 1, m is larger than 0 and smaller than K, and the transmission is repeated transmission or retransmission transmission.
Of course, the storage medium containing the computer executable instructions provided in the embodiments of the present application is not limited to the operations of the repeated transmission method described above, and may also perform the related operations in the receiving method provided in any embodiment of the present application.
From the above description of embodiments, it will be clear to a person skilled in the art that the present application may be implemented by means of software and necessary general purpose hardware, but of course also by means of hardware, although in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a FLASH Memory (FLASH), a hard disk, or an optical disk of a computer, etc., and include several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method according to the embodiments of the present application.
The foregoing description is only exemplary embodiments of the application and is not intended to limit the scope of the application.
It will be appreciated by those skilled in the art that the term user terminal encompasses any suitable type of wireless user equipment, such as a mobile telephone, a portable data processing device, a portable web browser or a car mobile station.
In general, the various embodiments of the application may be implemented in hardware or special purpose circuits, software, logic or any combination thereof. For example, some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software which may be executed by a controller, microprocessor or other computing device, although the application is not limited thereto.
Embodiments of the application may be implemented by a data processor of a mobile device executing computer program instructions, e.g. in a processor entity, either in hardware, or in a combination of software and hardware. The computer program instructions may be assembly instructions, instruction Set Architecture (ISA) instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source or object code written in any combination of one or more programming languages.
The block diagrams of any of the logic flows in the figures of this application may represent program steps, or may represent interconnected logic circuits, modules, and functions, or may represent a combination of program steps and logic circuits, modules, and functions. The computer program may be stored on a memory. The memory may be of any type suitable to the local technical environment and may be implemented using any suitable data storage technology, such as, but not limited to, read Only Memory (ROM), random Access Memory (RAM), optical memory devices and systems (digital versatile disk DVD or CD optical disk), etc. The computer readable medium may include a non-transitory storage medium. The data processor may be of any type suitable to the local technical environment, such as, but not limited to, general purpose computers, special purpose computers, microprocessors, digital Signal Processors (DSPs), application Specific Integrated Circuits (ASICs), programmable logic devices (FGPAs), and processors based on a multi-core processor architecture.
The foregoing detailed description of exemplary embodiments of the application has been provided by way of exemplary and non-limiting examples. Various modifications and adaptations to the above embodiments may become apparent to those skilled in the art without departing from the scope of the application, which is defined in the accompanying drawings and claims. Accordingly, the proper scope of the application is to be determined according to the claims.
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| CN202010120598.3A CN111901888B (en) | 2020-02-26 | 2020-02-26 | A repeated transmission method, device, equipment and storage medium |
| PCT/CN2021/071968 WO2021169653A1 (en) | 2020-02-26 | 2021-01-15 | Repeated transmission method and apparatus, device, and storage medium |
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| US20240244615A1 (en) * | 2021-05-10 | 2024-07-18 | Beijing Xiaomi Mobile Software Co., Ltd. | Configuration information sending method and apparatus, and redundancy version rv value determining method and apparatus |
| WO2024031623A1 (en) * | 2022-08-12 | 2024-02-15 | Lenovo (Beijing) Limited | User equipment, base station and method for configured grant uplink transmission |
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| CN110831218A (en) * | 2018-08-10 | 2020-02-21 | 电信科学技术研究院有限公司 | Information transmission method, base station and terminal |
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| CN109429251B (en) * | 2017-08-24 | 2020-12-22 | 华为技术有限公司 | Transmission method, terminal equipment and network equipment |
| CN109769305A (en) * | 2017-11-09 | 2019-05-17 | 普天信息技术有限公司 | Method, base station, electronic equipment and the storage medium of dispatch deal |
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| US20210314982A1 (en) * | 2018-08-10 | 2021-10-07 | Apple Inc. | Physical uplink shared channel enhancements for new radio ultra-reliable low-latency communication |
| GB2580129B (en) * | 2018-12-21 | 2021-08-18 | Tcl Communication Ltd | Uplink HARQ in cellular wireless communication networks |
| CN110268662B (en) * | 2019-05-09 | 2022-09-09 | 北京小米移动软件有限公司 | Transmission method, device and storage medium for hybrid automatic repeat request feedback |
| CN111901888B (en) * | 2020-02-26 | 2024-12-20 | 中兴通讯股份有限公司 | A repeated transmission method, device, equipment and storage medium |
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