WO2023070391A1 - Amélioration de la sélection de processus harq - Google Patents

Amélioration de la sélection de processus harq Download PDF

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Publication number
WO2023070391A1
WO2023070391A1 PCT/CN2021/126808 CN2021126808W WO2023070391A1 WO 2023070391 A1 WO2023070391 A1 WO 2023070391A1 CN 2021126808 W CN2021126808 W CN 2021126808W WO 2023070391 A1 WO2023070391 A1 WO 2023070391A1
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Prior art keywords
harq process
resource
rule
selecting
retransmission
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PCT/CN2021/126808
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English (en)
Inventor
Ping-Heng Kuo
Chunli Wu
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Nokia Shanghai Bell Co., Ltd.
Nokia Solutions And Networks Oy
Nokia Technologies Oy
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Priority to PCT/CN2021/126808 priority Critical patent/WO2023070391A1/fr
Publication of WO2023070391A1 publication Critical patent/WO2023070391A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end

Definitions

  • Embodiments of the present disclosure generally relate to the field of telecommunication and in particular to devices, methods, apparatuses and computer readable storage media of enhancement on Hybrid Automatic Repeat Request process (HARQ) process selection.
  • HARQ Hybrid Automatic Repeat Request process
  • configured grant (CG) resources are not associated to deterministic HARQ Process IDs (PIDs) . Instead, the UE autonomously selects a HARQ PID for each CG resource, which may be out of a pre-configured allowable HARQ PID pool of this CG resource.
  • a HARQ PID corresponding to a retransmission for example, a Media Access Control protocol data unit (MAC PDU) has been stored in the HARQ buffer, and the CG retransmission timer of this HARQ process is not running, the UE should prioritize the HARQ PID corresponding to the retransmission over HARQ PID corresponding to new transmission.
  • MAC PDU Media Access Control protocol data unit
  • the UE is allowed to prioritize data with higher data priority (e.g., logical channel (LCH) priority) , even if the HARQ process corresponds to a new transmission. Due to such an agreement, it is possible that new data with a relatively high LCH priority will always be transmitted more rapidly. However, some retransmissions that are also delay critical, but with a relatively low LCH priority, may have to wait longer until it can be retransmitted, and which may cause system performance degradation. Therefore, a more flexible and effective mechanism of HARQ process selection is needed.
  • LCH logical channel
  • Example embodiments of the present disclosure provide a solution of HARQ process selection.
  • a first device comprising at least one processor; and at least one memory including computer program codes; the at least one memory and the computer program codes are configured to, with the at least one processor, cause the first device at least to: in processing a first configured grant, CG, resource, evaluate whether at least one Hybrid Automatic Repeat Request process, HARQ, process allowed on the first CG resource has been de-prioritized on at least one second CG resource preceding the first CG resource; select, based on a result of the evaluation and from a group of candidate rules, a HARQ process selection rule for the first CG resource; and determine, based on the selected HARQ process selection rule, a target HARQ process for the first CG resource.
  • HARQ Hybrid Automatic Repeat Request process
  • a second device comprises at least one processor; and at least one memory including computer program codes; the at least one memory and the computer program codes are configured to, with the at least one processor, cause the second device at least to: transmit, to a first device, a message comprising configurations of a group of candidate rules for HARQ process selection; and receive, from the first device, a transport block on a first configured grant, CG, resource, the transport block corresponding to a target HARQ process determined based on one of the group of candidate rules.
  • a method comprises: in processing a first configured grant, CG, resource at a first device, evaluating whether at least one Hybrid Automatic Repeat Request process, HARQ, process allowed on the first CG resource has been de-prioritized on at least one second CG resource preceding the first CG resource; selecting, based on a result of the evaluation and from a group of candidate rules, a HARQ process selection rule for the first CG resource; and determining, based on the selected HARQ process selection rule, a target HARQ process for the first CG resource.
  • HARQ Hybrid Automatic Repeat Request process
  • a method comprises: t transmitting, at a second device and to a first device, a message comprising configurations of a group of candidate rules for HARQ process selection; and receiving, from the first device, a transport block on a first configured grant, CG, resource, the transport block corresponding to a target HARQ process determined based on one of the group of candidate rules.
  • a first apparatus comprises: means for in processing a first configured grant, CG, resource at a first apparatus, evaluating whether at least one Hybrid Automatic Repeat Request process, HARQ, process allowed on the first CG resource has been de-prioritized on at least one second CG resource preceding the first CG resource; means for selecting, based on a result of the evaluation and from a group of candidate rules, a HARQ process selection rule for the first CG resource; and means for determining, based on the selected HARQ process selection rule, a target HARQ process for the first CG resource.
  • HARQ Hybrid Automatic Repeat Request process
  • a second apparatus comprises: means for transmitting, at a second apparatus and to a first apparatus, a message comprising configurations of a group of candidate rules for HARQ process selection; and means for receiving, from the first apparatus, a transport block on a first configured grant, CG, resource, the transport block corresponding to a target HARQ process determined based on one of the group of candidate rules.
  • a computer readable medium having a computer program stored thereon which, when executed by at least one processor of a device, causes the device to carry out the method according to the third aspect.
  • a computer readable medium having a computer program stored thereon which, when executed by at least one processor of a device, causes the device to carry out the method according to the fourth aspect.
  • FIG. 1 illustrates an example network environment in which example embodiments of the present disclosure can be implemented
  • FIG. 2 illustrates a signaling chart of a HARQ process selection process according to some example embodiments of the present disclosure
  • FIG. 3 illustrates a schematic diagram of an example HARQ process selection according to some example embodiments of the present disclosure
  • FIG. 4 illustrates a flowchart of a method implemented at a terminal device in accordance with some example embodiments of the present disclosure
  • FIG. 5 illustrates a flowchart of a method implemented at a network device in accordance with some example embodiments of the present disclosure
  • FIG. 6 shows a simplified block diagram of a device that is suitable for implementing example embodiments of the present disclosure.
  • FIG. 7 shows a block diagram of an example computer readable medium in accordance with some embodiments of the present disclosure.
  • references in the present disclosure to “one embodiment, ” “an embodiment, ” “an example embodiment, ” and the like indicate that the embodiment described may include a particular feature, structure, or characteristic, but it is not necessary that every embodiment includes the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with an example embodiment, it is submitted that it is within the knowledge of one skilled in the art to affect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.
  • circuitry may refer to one or more or all of the following:
  • circuitry also covers an implementation of merely a hardware circuit or processor (or multiple processors) or portion of a hardware circuit or processor and its (or their) accompanying software and/or firmware.
  • circuitry also covers, for example and if applicable to the particular claim element, a baseband integrated circuit or processor integrated circuit for a mobile device or a similar integrated circuit in server, a cellular network device, or other computing or network device.
  • the term “communication network” refers to a network following any suitable communication standards, such as fifth generation (5G) systems, Long Term Evolution (LTE) , LTE-Advanced (LTE-A) , Wideband Code Division Multiple Access (WCDMA) , High-Speed Packet Access (HSPA) , Narrow Band Internet of Things (NB-IoT) , Wi-Fi and so on.
  • 5G fifth generation
  • LTE Long Term Evolution
  • LTE-A LTE-Advanced
  • WCDMA Wideband Code Division Multiple Access
  • HSPA High-Speed Packet Access
  • NB-IoT Narrow Band Internet of Things
  • the communications between a terminal device and a network device in the communication network may be performed according to any suitable generation communication protocols, including, but not limited to, the first generation (1G) , the second generation (2G) , 2.5G, 2.75G, the third generation (3G) , the fourth generation (4G) , 4.5G, the fifth generation (5G) new radio (NR) communication protocols, a future sixth generation (6G) , and/or any other protocols either currently known or to be developed in the future.
  • Embodiments of the present disclosure may be applied in various communication systems. Given the rapid development in communications, there will of course also be future type communication technologies and systems with which the present disclosure may be embodied. It should not be seen as limiting the scope of the present disclosure to only the aforementioned system.
  • the term “network device” refers to a node in a communication network via which a terminal device accesses the network and receives services therefrom.
  • the network device may refer to a base station (BS) or an access point (AP) , for example, a node B (NodeB or NB) , an evolved NodeB (eNodeB or eNB) , a NR Next Generation NodeB (gNB) , a Remote Radio Unit (RRU) , a radio header (RH) , a remote radio head (RRH) , a relay, a low power node such as a femto, a pico, and so forth, depending on the applied terminology and technology.
  • BS base station
  • AP access point
  • NodeB or NB node B
  • eNodeB or eNB evolved NodeB
  • gNB Next Generation NodeB
  • RRU Remote Radio Unit
  • RH radio header
  • RRH remote radio head
  • relay a
  • a RAN split architecture comprises a gNB-CU (Centralized unit, hosting RRC, SDAP and PDCP) controlling a plurality of gNB-DUs (Distributed unit, hosting RLC, MAC and PHY) .
  • a relay node may correspond to DU part of the IAB node.
  • terminal device refers to any end device that may be capable of wireless communication.
  • a terminal device may also be referred to as a communication device, user equipment (UE) , a subscriber station (SS) , a portable subscriber station, a mobile station (MS) , or an access terminal (AT) .
  • UE user equipment
  • SS subscriber station
  • MS mobile station
  • AT access terminal
  • the terminal device may include, but not limited to, a mobile phone, a cellular phone, a smart phone, voice over IP (VoIP) phones, wireless local loop phones, a tablet, a wearable terminal device, a personal digital assistant (PDA) , portable computers, desktop computer, image capture terminal devices such as digital cameras, gaming terminal devices, music storage and playback appliances, vehicle-mounted wireless terminal devices, wireless endpoints, mobile stations, laptop-embedded equipment (LEE) , laptop-mounted equipment (LME) , USB dongles, smart devices, wireless customer-premises equipment (CPE) , an Internet of Things (IoT) device, a watch or other wearable, a head-mounted display (HMD) , a vehicle, a drone, a medical device and applications (e.g., remote surgery) , an industrial device and applications (e.g., a robot and/or other wireless devices operating in an industrial and/or an automated processing chain contexts) , a consumer electronics device, a device operating on commercial and/
  • the terminal device may also correspond to Mobile Termination (MT) part of the integrated access and backhaul (IAB) node (a. k. a. a relay node) .
  • MT Mobile Termination
  • IAB integrated access and backhaul
  • the terms “terminal device” , “communication device” , “terminal” , “user equipment” and “UE” may be used interchangeably.
  • a user equipment apparatus such as a cell phone or tablet computer or laptop computer or desktop computer or mobile IoT device or fixed IoT device
  • This user equipment apparatus can, for example, be furnished with corresponding capabilities as described in connection with the fixed and/or the wireless network node (s) , as appropriate.
  • the user equipment apparatus may be the user equipment and/or or a control device, such as a chipset or processor, configured to control the user equipment when installed therein. Examples of such functionalities include the bootstrapping server function and/or the home subscriber server, which may be implemented in the user equipment apparatus by providing the user equipment apparatus with software configured to cause the user equipment apparatus to perform from the point of view of these functions/nodes.
  • the UE prioritizes a HARQ PID corresponding to a retransmission over a HARQ PID corresponding to a new transmission.
  • This rule is designed and adopted in a sense that, comparing to new transmissions, the MAC PDU of retransmission has already been generated for a while, and from the packet delay budget point of view, the retransmission should be prioritized so as to ensure the QoS requirement.
  • the Ultra-reliable and Low Latency Communication (URLLC) has been supported in unlicensed band, and it is possible for the UE to prioritize data with higher LCH priority over other data, regardless of whether the data is associated with new transmission or retransmission.
  • URLLC Ultra-reliable and Low Latency Communication
  • both of the terms “new transmission” and “initial transmission” refer to a transport block or a protocol data unit that is initially transmitted on a channel, and they can be exchangeable in the context of the example embodiments.
  • FIG. 1 illustrates an example network system 100 in which example embodiments of the present disclosure can be implemented.
  • the communication network 100 may include a first device 110 (hereinafter may also be referred to as a UE 110 or a terminal device 110) and a network device 120 (hereinafter may also be referred to as a gNB 120 or a network device 120) .
  • a first device 110 hereinafter may also be referred to as a UE 110 or a terminal device 110
  • a network device 120 hereinafter may also be referred to as a gNB 120 or a network device 120
  • the second device 120 can manage a serving cell 102 for the first device 110.
  • the first device 110 and the second device 120 can communicate with each other in the coverage of the cell 102.
  • the second device 120 may allocate CG resources in unlicensed band for the first device 110, and the first device 110 may use the CG resources for data transmission or retransmissions on an uplink channel (e.g., physical uplink shared channel (PUSCH) ) .
  • PUSCH physical uplink shared channel
  • CGRT CG retransmission timer
  • the first device 110 may not receive any downlink feedback information (DFI) that indicates the HARQ process status of this MAC PDU from the second device 120. If no DFI relating the HARQ process status is received until the expiration of the CGRT, the first device 110 may perform autonomous retransmission of this MAC PDU on a subsequent CG resource after the CGRT is expired.
  • DFI downlink feedback information
  • the first device 110 In processing a subsequent CG resource, the first device 110 is able to determine a HARQ PID based on different HARQ process selection rules.
  • the HARQ process selection rules may include at least a first rule for selecting a HARQ process corresponding to a highest data priority and a second rule for selecting a HARQ process corresponding to a retransmission or an initial transmission that has been de-prioritized on at least one preceding CG resource.
  • the first device 110 can select a HARQ PID either based on the LCH priority or based on a de-prioritized state of at least one HARQ PIDs depending on certain conditions, which will be discussed in detail below.
  • the first device 110 determines whether it should consider changing the rule for HARQ process selection depending on if at least two or more HARQ processes correspond to the same data priority, and an alternative HARQ PID selection rule is needed to resolve the ambiguity.
  • the network system 100 may include any suitable number of devices and/or object adapted for implementing implementations of the present disclosure, and the compound channel between the first device 110 and the second device 120 may be more complex or simple. Although not shown, it would be appreciated that one or more additional devices may be located in the environment 100.
  • the first device 110 and the second device 120 may be other devices or a part of the base station and the terminal device, for example, at least a part of a terrestrial network device or a non-terrestrial network device.
  • the network system 100 may be a Code Division Multiple Access (CDMA) network, a Time Division Multiple Address (TDMA) network, a Frequency Division Multiple Access (FDMA) network, an Orthogonal Frequency-Division Multiple Access (OFDMA) network, a Single Carrier-Frequency Division Multiple Access (SC-FDMA) network or any other.
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Address
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency-Division Multiple Access
  • SC-FDMA Single Carrier-Frequency Division Multiple Access
  • Communications discussed in the network 100 may conform to any suitable standards including, but not limited to, New Radio Access (NR) , Long Term Evolution (LTE) , LTE-Evolution, LTE-Advanced (LTE-A) , Wideband Code Division Multiple Access (WCDMA) , Code Division Multiple Access (CDMA) , cdma2000, and Global System for Mobile Communications (GSM) and the like.
  • NR New Radio Access
  • LTE Long Term Evolution
  • LTE-Evolution LTE-Advanced
  • LTE-A LTE-Advanced
  • WCDMA Wideband Code Division Multiple Access
  • CDMA Code Division Multiple Access
  • GSM Global System for Mobile Communications
  • Examples of the communication protocols include, but not limited to, the first generation (1G) , the second generation (2G) , 2.5G, 2.75G, the third generation (3G) , the fourth generation (4G) , 4.5G, the fifth generation (5G) , a future sixth generation communication protocols.
  • the techniques described herein may be used for the wireless networks and radio technologies mentioned above as well as other wireless networks and radio technologies. For clarity, certain aspects of the techniques are described below for NR and JCAS in the description below.
  • FIG. 2 illustrates a signaling chart of a HARQ process selection process 200 according to some example embodiments of the present disclosure.
  • the process 200 may involve the first device 110 and the second device 120 as shown in FIG. 1.
  • the process 200 will be described with reference to FIG. 1.
  • the first device 110 processes a first CG resource for a coming CG occasion.
  • the first device 110 needs to select a target HARQ PID for the first CG resource from at least one candidate HARQ process allowed for the first resource.
  • the candidate HARQ process may include a HARQ process for a new data transmission and/or a HARQ process for a data retransmission that has been already stored in the HARQ buffer.
  • the first device 110 may select the target HARQ PID based on the data priority, which may be considered as a default HARQ process selection rule.
  • the first device 110 is able to change the HARQ process selection rule if a retransmission or an initial transmission has been de-prioritized for certain times (e.g., N ⁇ 1) or for a certain period of time.
  • the second device 120 may provide HARQ process selection configurations to the first device 110.
  • the second device 120 may transmit 205 a message comprising HARQ process selection configurations.
  • the HARQ process selection configurations may indicate, for example, a condition for changing from the data priority based rule to a rule for prioritizing a retransmission or a new transmission that has been de-prioritized over other one or more new transmission that has not been de-prioritized yet when a CG resource is processed by the first device 110.
  • the HARQ process selection configurations may be preconfigured at the first device 110, and thus the signaling of the configuration message is not necessary to the process 200.
  • the first device 110 evaluates 210 whether a de-prioritized state of the at least one HARQ process meets the condition for changing the rule for HARQ process selection.
  • the de-prioritized state may indicate that the at least one HARQ process has been de-prioritized on at least one second CG resource preceding the first CG resource.
  • the de-prioritized state of a HARQ process may be characterized by one or more of the following parameters:
  • ⁇ a traffic characteristic (e.g. periodicity and/or burst arrival time) of the data associated with the HARQ process
  • MAC CE MAC control element
  • the condition may be specified by a threshold associated with the de-prioritized state, for example, corresponding thresholds of the above parameters. If the condition is met, which indicates that the HARQ process that has been de-prioritized at least once should not be de-prioritized any more, the first device 110 determines 215 that the corresponding retransmission or the corresponding new transmission should be prioritized over the new transmission that has not been de-prioritized yet.
  • the first device 110 may select one of the following to be the target HARQ PID for the first CG resource:
  • HARQ PID corresponding to a retransmission or a new transmission that has been de-prioritized for most times or for a longest period of time.
  • the first device 110 determines 220 that the target HARQ process should be selected from the at least one candidate HARQ process based on the data priority, or simply any retransmission. In these embodiments, the first device 110 may select the HARQ PID corresponding to a new transmission or a retransmission with a highest or lowest LCH priority.
  • the first device 110 then performs 225 the retransmission/transmission corresponding to the selected HARQ PID on the first resource.
  • the configured grant uplink control information may be embedded on the PUSCH that indicates the HARQ PID selected by the first device 110.
  • the second device 120 can process the transport block received on the CG PUSCH properly. Hence, the process 200 can achieve the synchronization between the first device 110 and the second device 120.
  • FIG. 3 illustrates a schematic diagram of an example HARQ process selection according to some example embodiments of the present disclosure.
  • the first device 110 transmits an initial transmission of a MAC PDU on a second resource 301, and the CGRT of a corresponding HARQ PID starts. While the CGRT is running, the first device 110 may not receive any downlink feedback information (DFI) from the second device 120 indicating the HARQ process status of this MAC PDU. After the CGRT is expired, the first device 110 may use a subsequent CG resource to perform autonomous retransmission of this MAC PDU.
  • DFI downlink feedback information
  • the first device 110 may select a new transmission based on the LCH priority, which means the retransmission of the MAC PDU is further delayed. In other words, the retransmission is de-prioritized on the CG resource 304.
  • the first device 110 may consider the retransmission that has been de-prioritized in its previous autonomous retransmission opportunity (i.e., the CG resource 304) and thereby changing the HARQ PID selection rule to prioritize the retransmission of the MAC PDU instead, rather than using the LCH priority based rule to make the decision.
  • the changing of the rule for HARQ process selection may be applied on the particular CG resource 305, i.e., per CG resource, or applied on a particular LCH, that is, per LCH. That is, the first device 110 determines whether it should consider changing the rule for HARQ process selection depending on if it is processing a particular CG resource, or if any HARQ process corresponds to a particular LCH.
  • a UE when a UE is processing a CG resource and select a HARQ PID for this CG resource, it may check if there is any retransmission or initial transmission that has been de-prioritized N times in previous opportunities. If so, the UE may fall back to a HARQ PID selection rule that prioritizes the retransmission or the initial transmission over other initial transmission that has not been de-prioritized yet. Otherwise, the UE may continue to apply the HARQ PID selection rule based on LCH priority or prioritize any retransmission.
  • the UE can autonomously change the HARQ PID selection rule for each CG resource or each logical channel, conditioned on whether there is a “selectable” HARQ PID for retransmission/initial transmission that has been de-prioritized N times or for a certain period of time.
  • the UE can properly arrange the initial transmission and the retransmission on CG resources, and thus the system performance and the QoS requirements can be ensured.
  • FIG. 4 illustrates a flowchart of a method 400 implemented at a terminal device in accordance with some example embodiments of the present disclosure.
  • the method 400 can be implemented at the first device 110 shown in FIG. 1.
  • the method 400 will be described with reference to FIG. 1. It is to be understood that method 400 may further include additional blocks not shown and/or omit some shown blocks, and the scope of the present disclosure is not limited in this regard.
  • the first device 110 evaluates whether at least one HARQ process allowed on the first CG resource has been de-prioritized on at least one second CG resource preceding the first CG resource.
  • the first device 110 may evaluate whether the at least one HARQ process has been de-prioritized on at least one second CG resource based on at least one of the following:
  • ⁇ at least one parameter of the at least one second CG resource, for example, the CG index.
  • the evaluation may be applied per CG resource or per LCH.
  • the first device 110 selects, based on a result of the evaluation and from a group of candidate rules, a HARQ process selection rule for the first CG resource.
  • the group of candidate rules may comprise at least two of the following rules:
  • ⁇ a third rule for selecting a HARQ process corresponding to a retransmission or a new transmission de-prioritized on at least one second CG resource for the most times or the longest time period as the target HARQ process
  • ⁇ a fourth rule for selecting a HARQ process corresponding to a highest data priority or a lowest data priority among a plurality of retransmission and new transmission de-prioritized on at least one second CG resource as the target HARQ process
  • ⁇ a sixth rule for selecting a HARQ process corresponding to a retransmission or a new transmission that has the least time left for retransmission
  • ⁇ a seventh rule for selecting a HARQ process corresponding to a retransmission or a new transmission that the delivery failure of which may result in violation of at least one QoS requirement, such as packet error rate, packet delay budget, or survival time.
  • the first device 110 may receive, from a second device 120, a message comprising a configuration of at least one of the candidate rules for HARQ process selection.
  • the first device 110 may select the first rule if the at least one HARQ process is evaluated to be not de-prioritized on the at least one second CG resource. Otherwise, if the at least one HARQ process is evaluated to be de-prioritized on the at least one second CG resource, the first device 110 may select one of the group of candidate rules other than the first rule.
  • the first device 110 may select the fifth rule. Otherwise, if the at least one HARQ process is evaluated to be de-prioritized on the at least one second CG resource, the first device 110 may select one of the group of candidate rules other than the fifth rule.
  • the first device 110 determines, based on the selected HARQ process selection rule, a target HARQ process for the first CG resource.
  • the target HARQ process is determined from a plurality of HARQ processes corresponds to a plurality of transport blocks to be transmitted.
  • the first device 110 may transmit, to a second device 120, a transport block associated with the target HARQ process on the first CG resource.
  • the second device 120 since the CG-UCI is embedded on the PUSCH that indicates the HARQ PID selected by the first device 110, the second device 120 is capable of processing the transport block received on the CG PUSCH properly. In this way, the synchronization can be achieved between the first device 110 and the second device 120.
  • the first device 110 may be a terminal device and the second device 120 may be a network device.
  • an enhanced HARQ process selection mechanism which is adapted for de-prioritized retransmission or initial transmission.
  • the UE In processing CG resources, the UE is capable of selecting the HARQ process ID not only based on the data priority, but also taking the de-prioritization state of data retransmission/transmission into consideration. In this way, the UE can properly arrange initial transmission and the retransmission on CG resources, and the system performance and the QoS requirements can be ensured.
  • FIG. 5 illustrates a flowchart of a method 500 implemented at a network device in accordance with some example embodiments of the present disclosure.
  • the method 500 can be implemented at the second device 120 shown in FIG. 1.
  • the method 500 will be described with reference to FIG. 1. It is to be understood that method 500 may further include additional blocks not shown and/or omit some shown blocks, and the scope of the present disclosure is not limited in this regard.
  • the second device 120 transmits, to a first device 110, a message comprising configurations of a group of candidate rules for HARQ process selection.
  • the group of candidate rules comprises at least two of the following rules:
  • ⁇ a third rule for selecting a HARQ process corresponding to a retransmission or a new transmission de-prioritized on at least one second CG resource for the most times or the longest time period as the target HARQ process
  • ⁇ a fourth rule for selecting a HARQ process corresponding to a highest data priority or a lowest data priority among a plurality of retransmission and new transmission de-prioritized on at least one second CG resource as the target HARQ process
  • ⁇ a sixth rule for selecting a HARQ process corresponding to a retransmission or a new transmission that has the least time left for retransmission
  • ⁇ a seventh rule for selecting a HARQ process corresponding to a retransmission or a new transmission that the delivery failure of which may result in violation of at least one QoS requirement, such as packet error rate, packet delay budget, or survival time.
  • the configurations may be applied per CG resource or per LCH.
  • the second device 120 receives, from the first device 110, a transport block on a first CG resource.
  • the transport block may correspond to a target HARQ process determined based on one of the group of candidate rules.
  • the second device 120 since the CG-UCI is embedded on the PUSCH that indicates the HARQ PID selected by the first device 110, the second device 120 is capable of processing the transport block received on the CG PUSCH properly. In this way, the synchronization can be achieved between the first device 110 and the second device 120.
  • the first device 110 may be a terminal device and the second device 120 may be a network device.
  • the enhanced HARQ process selection mechanism is adapted for de-prioritized retransmission or new transmission.
  • the UE considers not only the LCH priority, but also the de-prioritization state of at least one HARQ PID.
  • the UE can still prioritize the a HARQ process that satisfies certain conditions regardless of the default rule e.g. based on LCH priority. Therefore, the UE can properly arrange the initial transmission and retransmission on the CG resources, which guarantees the system performance and QoS requirements.
  • a first apparatus capable of performing the method 400 may comprise means for performing the respective steps of the method 400.
  • the means may be implemented in any suitable form.
  • the means may be implemented in a circuitry or software module.
  • the first apparatus comprises: means for in processing a first configured grant, CG, resource, evaluating whether at least one Hybrid Automatic Repeat Request process, HARQ, process allowed on the first CG resource has been de-prioritized on at least one second CG resource preceding the first CG resource; means for selecting, based on a result of the evaluation and from a group of candidate rules, a HARQ process selection rule for the first CG resource; and means for determining, based on the selected HARQ process selection rule, a target HARQ process for the first CG resource.
  • HARQ Hybrid Automatic Repeat Request process
  • the group of candidate rules comprises at least two of the following rules: a first rule for selecting a HARQ process corresponding to a highest data priority as the target HARQ process; a second rule for selecting a HARQ process corresponding to a retransmission or a new transmission de-prioritized on at least one second CG resource as the target HARQ process; a third rule for selecting a HARQ process corresponding to a retransmission or a new transmission de-prioritized on at least one second CG resource for the most times or the longest time period as the target HARQ process; a fourth rule for selecting a HARQ process corresponding to a highest data priority or a lowest data priority among a plurality of retransmission and new transmission de-prioritized on at least one second CG resource as the target HARQ process; a fifth rule for selecting a HARQ process corresponding to any of the retransmission or any of the new transmission as the target HARQ process, a sixth rule for
  • the means for selecting the HARQ process selection rule comprises: means for in accordance with a determination that the at least one HARQ process is evaluated to be not de-prioritized on the at least one second CG resource, selecting the first rule; and means for in accordance with a determination that the at least one HARQ process is evaluated to be de-prioritized on the at least one second CG resource, selecting one of the group of candidate rules other than the first rule.
  • the means for selecting the HARQ process selection rule comprises: means for in accordance with a determination that the at least one HARQ process is evaluated to be not de-prioritized on the at least one second CG resource, selecting the fifth rule; and means for in accordance with a determination that the at least one HARQ process is evaluated to be de-prioritized on the at least one second CG resource, selecting one of the group of candidate rules other than the fifth rule.
  • the target HARQ process is determined from a plurality of HARQ processes corresponds to a plurality of transport blocks to be transmitted.
  • the first apparatus is caused to evaluate whether the at least one HARQ process has been de-prioritized on at least one second CG resource based on at least one of the following: at least one parameter of at least one LCH mapped or to be mapped to at least one transport block corresponding to the at least one HARQ process; at least one MAC CE mapped or to be mapped to the at least one transport block corresponding to the at least one HARQ process, and at least one parameter of the at least one second CG resource.
  • the evaluation is applied per configured grant resource or per LCH.
  • the first apparatus further comprises: means for receiving, from a second apparatus, a message comprising a configuration of at least one of the candidate rules for HARQ process selection.
  • the group of candidate rules for HARQ process selection are preconfigured at the first apparatus.
  • the first apparatus further comprises: means for transmitting, to a second apparatus, a transport block associated with the target HARQ process on the first CG resource.
  • the first apparatus comprises a terminal device.
  • a second apparatus capable of performing the method 500 may comprise means for performing the respective steps of the method 500.
  • the means may be implemented in any suitable form.
  • the means may be implemented in a circuitry or software module.
  • the second apparatus comprises: means for transmitting, at a second apparatus and to a first apparatus, a message comprising configurations of a group of candidate rules for HARQ process selection; and means for means for receiving, from the first apparatus, a transport block on a first configured grant, CG, resource, the transport block corresponding to a target HARQ process determined based on one of the group of candidate rules.
  • the group of candidate rules comprises at least two of the following rules: a first rule for selecting a HARQ process corresponding to a highest data priority as the target HARQ process; a second rule for selecting a HARQ process corresponding to a retransmission or a new transmission de-prioritized on at least one second CG resource as the target HARQ process; a third rule for selecting a HARQ process corresponding to a retransmission or a new transmission de-prioritized on at least one second CG resource for the most times or the longest time period as the target HARQ process; a fourth rule for selecting a HARQ process corresponding to a highest data priority or a lowest data priority among a plurality of retransmission and new transmission de-prioritized on at least one second CG resource as the target HARQ process; a fifth rule for selecting a HARQ process corresponding to any of the retransmission or any of the new transmission as the target HARQ process, a sixth rule for
  • the configurations are applied per CG resource or per LCH.
  • the first device comprises a terminal device
  • a second device comprises a network device
  • FIG. 6 is a simplified block diagram of a device 600 that is suitable for implementing embodiments of the present disclosure.
  • the device 600 may be provided to implement the communication device, for example the first device 110 and the second device 120 as shown in FIG. 1.
  • the device 600 includes one or more processors 610, one or more memories 620 coupled to the processor 610, and one or more transmitters and/or receivers (TX/RX) 640 coupled to the processor 610.
  • TX/RX transmitters and/or receivers
  • the TX/RX 640 may be configured for bidirectional communications.
  • the TX/RX 640 has at least one antenna to facilitate communication.
  • the communication interface may represent any interface that is necessary for communication with other network elements.
  • the processor 610 may be of any type suitable to the local technical network and may include one or more of the following: general purpose computers, special purpose computers, microprocessors, digital signal processors (DSPs) and processors based on multicore processor architecture, as non-limiting examples.
  • the device 600 may have multiple processors, such as an application specific integrated circuit chip that is slaved in time to a clock which synchronizes the main processor.
  • the memory 620 may include one or more non-volatile memories and one or more volatile memories.
  • the non-volatile memories include, but are not limited to, a Read Only Memory (ROM) 624, an electrically programmable read only memory (EPROM) , a flash memory, a hard disk, a compact disc (CD) , a digital video disk (DVD) , and other magnetic storage and/or optical storage media.
  • the volatile memories include, but are not limited to, a random access memory (RAM) 622 and other volatile memories that will not last in the power-down duration.
  • a computer program 630 includes computer executable instructions that may be executed by the associated processor 610.
  • the program 630 may be stored in the ROM 624.
  • the processor 610 may perform any suitable actions and processing by loading the program 630 into the RAM 622.
  • the embodiments of the present disclosure may be implemented by means of the program 630 so that the device 600 may perform any process of the disclosure as discussed with reference to FIGs. 4-5.
  • the embodiments of the present disclosure may also be implemented by hardware or by a combination of software and hardware.
  • the program 630 may be tangibly contained in a computer readable medium which may be included in the device 600 (such as in the memory 620) or other storage devices that are accessible by the device 600.
  • the device 600 may load the program 630 from the computer readable medium to the RAM 622 for execution.
  • the computer readable medium may include any types of tangible non-volatile storage, such as ROM, EPROM, a flash memory, a hard disk, CD, DVD, and the like.
  • FIG. 7 shows an example of the computer readable medium 700 in form of CD or DVD.
  • the computer readable medium has the program 630 stored thereon.
  • Various embodiments of the present disclosure may be implemented in hardware or special purpose circuits, software, logic or any combination thereof. 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. While various aspects of embodiments of the present disclosure are illustrated and described as block diagrams, flowcharts, or using some other pictorial representations. It is to be understood that the block, device, system, technique or method described herein may be implemented in, as non-limiting examples, hardware, software, firmware, special purpose circuits or logic, general purpose hardware or controller or other computing devices, or some combination thereof.
  • the present disclosure also provides at least one computer program product tangibly stored on a non-transitory computer readable storage medium.
  • the computer program product includes computer-executable instructions, such as those included in program modules, being executed in a device on a target real or virtual processor, to carry out the methods 400 and 500 as described above with reference to FIGs. 4-5.
  • program modules may include routines, programs, libraries, objects, classes, components, data structures, or the like that perform particular tasks or implement particular abstract data types.
  • the functionality of the program modules may be combined or split between program modules as desired in various embodiments.
  • Machine-executable instructions for program modules may be executed within a local or distributed device. In a distributed device, program modules may be located in both local and remote storage media.
  • Program code for carrying out methods of the present disclosure may be written in any combination of one or more programming languages. These program codes may be provided to a processor or controller of a general purpose computer, special purpose computer, or other programmable data processing device, such that the program codes, when executed by the processor or controller, cause the functions/operations specified in the flowcharts and/or block diagrams to be implemented.
  • the program code may execute entirely on a machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
  • the computer program codes or related data may be carried by any suitable carrier to enable the device, device or processor to perform various processes and operations as described above.
  • Examples of the carrier include a signal, computer readable medium, and the like.
  • the computer readable medium may be a computer readable signal medium or a computer readable storage medium.
  • a computer readable medium may include but not limited to an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or device, or any suitable combination of the foregoing. More specific examples of the computer readable storage medium would include an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM) , a read-only memory (ROM) , an erasable programmable read-only memory (EPROM or Flash memory) , an optical fiber, a portable compact disc read-only memory (CD-ROM) , an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

Des modes de réalisation de la présente divulgation concernent un dispositif, un procédé, un appareil et des supports de stockage lisibles par ordinateur destinés à la sélection de processus HARQ. Le procédé comprend les étapes suivantes : lors du traitement d'une première ressource d'autorisation configurée (CG), évaluer, au niveau d'un premier dispositif, si au moins un processus de demande de répétition automatique hybride (HARQ) autorisé sur la première ressource CG a subit une réduction de priorité sur au moins une seconde ressource CG précédant la première ressource CG; sélectionner, sur la base d'un résultat de l'évaluation et parmi un groupe de règles candidates, une règle de sélection de processus HARQ pour la première ressource CG; et déterminer, sur la base de la règle de sélection de processus HARQ sélectionnée, un processus HARQ cible pour la première ressource CG. Le mécanisme de sélection de processus HARQ amélioré est conçu pour la retransmission à priorité réduite. Lors du traitement de ressources CG, l'UE peut sélectionner l'identifiant de processus HARQ non seulement sur la base de la priorité de données, mais il peut également prendre en considération la réduction de priorité de retransmission de données.
PCT/CN2021/126808 2021-10-27 2021-10-27 Amélioration de la sélection de processus harq WO2023070391A1 (fr)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021022532A1 (fr) * 2019-08-07 2021-02-11 Nokia Shanghai Bell Co., Ltd. Partage de processus harq par de multiples ressources à octroi configurées
WO2021211728A1 (fr) * 2020-04-14 2021-10-21 Idac Holdings, Inc. Procédés et appareils pour couverture vocale améliorée
CN113597805A (zh) * 2019-03-27 2021-11-02 鸿颖创新有限公司 用于处理重叠的pusch持续时间的方法和装置
CN113767586A (zh) * 2019-04-30 2021-12-07 Idac控股公司 用于在所配置的许可上的增强型上行链路数据传输的方法、装置和系统

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113597805A (zh) * 2019-03-27 2021-11-02 鸿颖创新有限公司 用于处理重叠的pusch持续时间的方法和装置
CN113767586A (zh) * 2019-04-30 2021-12-07 Idac控股公司 用于在所配置的许可上的增强型上行链路数据传输的方法、装置和系统
WO2021022532A1 (fr) * 2019-08-07 2021-02-11 Nokia Shanghai Bell Co., Ltd. Partage de processus harq par de multiples ressources à octroi configurées
WO2021211728A1 (fr) * 2020-04-14 2021-10-21 Idac Holdings, Inc. Procédés et appareils pour couverture vocale améliorée

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