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WO2021035490A1 - Configuration de ressources d'informations de commande de liaison latérale - Google Patents

Configuration de ressources d'informations de commande de liaison latérale Download PDF

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Publication number
WO2021035490A1
WO2021035490A1 PCT/CN2019/102623 CN2019102623W WO2021035490A1 WO 2021035490 A1 WO2021035490 A1 WO 2021035490A1 CN 2019102623 W CN2019102623 W CN 2019102623W WO 2021035490 A1 WO2021035490 A1 WO 2021035490A1
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WIPO (PCT)
Prior art keywords
resources
control information
determining
sidelink control
resource configuration
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PCT/CN2019/102623
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English (en)
Inventor
Dong Li
Yong Liu
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Nokia Shanghai Bell Co Ltd
Nokia Solutions and Networks Oy
Nokia Technologies Oy
Original Assignee
Nokia Shanghai Bell Co Ltd
Nokia Solutions and Networks Oy
Nokia Technologies Oy
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Application filed by Nokia Shanghai Bell Co Ltd, Nokia Solutions and Networks Oy, Nokia Technologies Oy filed Critical Nokia Shanghai Bell Co Ltd
Priority to PCT/CN2019/102623 priority Critical patent/WO2021035490A1/fr
Priority to CN201980099719.6A priority patent/CN114342534B/zh
Publication of WO2021035490A1 publication Critical patent/WO2021035490A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]

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 resource configuration for the sidelink control information (SCI) .
  • SCI sidelink control information
  • 3rd Generation Partnership Project 3rd Generation Partnership Project
  • NR New Radio
  • V2X traffic types include broadcast, groupcast and unicast with configurable HARQ feedback for the unicast and groupcast.
  • example embodiments of the present disclosure provide a solution of resource configuration for the SCI.
  • 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 determine a first set of resources for transmitting a first part of SCI; determine a second set of resources for transmitting a second part of SCI at least based on a resource configuration pattern and the first set of resources, the resource configuration pattern at least indicating a first association of multiplexing between the first set of resources and the second set of resources in a time domain or in a frequency domain; and transmit the first part of SCI on the first set of resources and the second part of SCI on the second set of resources to a second device.
  • a second 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 second device at least to receive a first part of sidelink control information on a first set of resources from a first device; determine a resource configuration pattern based on one of the first part of SCI and the resource pool configuration signaling, the resource configuration pattern at least indicating a first association of multiplexing between the first set of resources and a second set of resources for the second part of SCI in a time domain or in a frequency domain; determine the second set of resources at least based on the resource configuration pattern and first set of resources; and receive the second part of the SCI on the second set of resources from the first device.
  • a method comprises determining, at a first device, a first set of resources for transmitting a first part of SCI; determining a second set of resources for transmitting a second part of SCI at least based on a resource configuration pattern and the first set of resources, the resource configuration pattern at least indicating a first association of multiplexing between the first set of resources and the second set of resources in a time domain or in a frequency domain; and transmitting the first part of SCI on the first set of resources and the second part of SCI on the second set of resources to a second device.
  • a method comprises receiving, at second device, a first part of SCI on a first set of resources from a first device; determining a resource configuration pattern based on one of the first part of SCI and the resource pool configuration signaling, the resource configuration pattern at least indicating a first association of multiplexing between the first set of resources and a second set of resources for transmitting the second part of SCI in a time domain or in a frequency domain; determining the second set of resources at least based on the resource configuration pattern and first set of resources; and receiving the second part of the SCI on the second set of resources from the first device.
  • an apparatus comprises means for determining, a first set of resources for transmitting a first part of SCI; means for determining a second set of resources for transmitting a second part of SCI at least based on a resource configuration pattern and the first set of resources, the resource configuration pattern at least indicating a first association of multiplexing between the first set of resources and the second set of resources in a time domain or in a frequency domain; and means for transmitting the first part of SCI on the first set of resources and the second part of SCI on the second set of resources to a second device.
  • an apparatus comprises means for receiving a first part of SCI on a first set of resources from a first device; means for determining a resource configuration pattern based on one of the first part of SCI and the resource pool configuration signaling, the resource configuration pattern at least indicating a first association of multiplexing between the first set of resources and a second set of resources for transmitting the second part of SCI in a time domain or in a frequency domain; means for determining the second set of resources at least based on the resource configuration pattern and first set of resources; and means for receiving the second part of the SCI on the second set of resources from the first device.
  • 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 shows an example communication network in which example embodiments of the present disclosure may be implemented
  • FIG. 2 shows a schematic diagram illustrating a process 200 of resource configuration for the SCI according to example embodiments of the present disclosure
  • FIGs. 3A -3D show diagrams of example resource configuration for the SCI according to some example embodiments of the present disclosure
  • FIGs. 4A -4D show diagrams of example resource configuration for the SCI according to some example embodiments of the present disclosure
  • FIG. 5 shows a flowchart of an example method 500 of diagrams of resource configuration for the SCI according to some example embodiments of the present disclosure
  • FIG. 6 shows a flowchart of an example method 600 of diagrams of resource configuration for the SCI according to some example embodiments of the present disclosure
  • FIG. 7 shows a simplified block diagram of a device that is suitable for implementing example embodiments of the present disclosure.
  • Fig. 8 shows a block diagram of an example computer readable medium in accordance with some embodiments of the present disclosure.
  • the term “communication network” refers to a network following any suitable communication standards, such as Long Term Evolution (LTE) , LTE-Advanced (LTE-A) , Wideband Code Division Multiple Access (WCDMA) , High-Speed Packet Access (HSPA) , and so on.
  • LTE Long Term Evolution
  • LTE-A LTE-Advanced
  • WCDMA Wideband Code Division Multiple Access
  • HSPA High-Speed Packet Access
  • 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 future fifth generation (5G) communication protocols, 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. For the purpose of illustrations, embodiments of the present disclosure will be described with reference to 5G communication system.
  • the term “network device” used herein includes, but not limited to, a base station (BS) , a gateway, a registration management entity, and other suitable device in a communication system.
  • base station or “BS” represents a node B (NodeB or NB) , an evolved NodeB (eNodeB or eNB) , a NR NB (also referred to as a 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.
  • NodeB or NB node B
  • eNodeB or eNB evolved NodeB
  • NR NB also referred to as a gNB
  • RRU Remote Radio Unit
  • RH radio header
  • RRH remote radio head
  • relay a low power node such as a femto, a pico
  • terminal device includes, but not limited to, “user equipment (UE) ” and other suitable end device capable of communicating with the network device.
  • the “terminal device” may refer to a terminal, a Mobile Terminal (MT) , a Subscriber Station (SS) , a Portable Subscriber Station, a Mobile Station (MS) , or an Access Terminal (AT) .
  • MT Mobile Terminal
  • SS Subscriber Station
  • MS Mobile Station
  • AT Access Terminal
  • circuitry used herein 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.
  • FIG. 1 shows an example communication network 100 in which embodiments of the present disclosure can be implemented.
  • the network 100 includes terminal devices 110-1 and 110-2.
  • the terminal device 110-1 may be referred to as a first device 110-1-1 and the terminal device 110-2 may be referred to a second device 110-2.
  • the terminal devices 110-1 and 110-2 may communicate with each otehr. It is to be understood that the number of terminal devices is only for the purpose of illustration without suggesting any limitations.
  • the network 100 may include any suitable number of terminal devices adapted for implementing embodiments of the present disclosure.
  • the first device 110-1 may also be considered as a second device and correspondingly the second device 110-2 may also be considered as a first device.
  • the roles of the first and the second devices may be exchanged.
  • V2X communication can be divided into four types, including Vehicle-to-Vehicle (V2V) , Vehicle-to-Pedestrian (V2P) , Vehicle-to-Infrastructure (V2I) , Vehicle-to-Network (V2N) .
  • Communication between terminal devices can be performed via both Uu interface and direct links (or sidelinks) .
  • information may be transmitted from a Transmit (TX) terminal device to one or more Receive (RX) terminal devices in a broadcast, or groupcast, or unicast manner.
  • TX Transmit
  • RX Receive
  • a sidelink transmission via a physical sidelink control channel (PSCCH) and a physical sidelink shared channel (PSSCH) have been studied to enable communication between terminal devices for V2X communications.
  • a physical sidelink feedback channel (PSFCH) is defined to convey sidelink feedback control information (SFCI) .
  • a resource pool is a set of time-frequency resources that can be used for sidelink (SL) transmission and/or reception. From the terminal device point of view, a resource pool is inside the terminal device's bandwidth, within a SL Bandwidth Part (BWP) and has a single numerology. Time domain resources in a resource pool can be non-contiguous.
  • the network 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 others.
  • 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 use 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-A LTE-Evolution
  • WCDMA Wideband Code Division Multiple Access
  • CDMA Code Division Multiple Access
  • GSM Global System for Mobile Communications
  • the communications may be performed according to any generation communication protocols either currently known or to be developed in the future. 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) communication protocols.
  • the techniques described herein may be used
  • the terminal devices 110-1 and 110-2 may be referred to as V2X terminal devices.
  • the terminal devices 110-1 and 110-2 may be vehicles moving on the road.
  • V2X traffic types include broadcast, groupcast and unicast with configurable HARQ feedback for the unicast and groupcast. Since different cast types may require different control information, the corresponding SCI generally have quite different sizes, which raises great challenge on the design of the PSCCH.
  • the current SCI is a one-stage SCI, which means all SCI information is contained in one-stage SCI and conveyed in a single PSCCH.
  • SCI supporting different cast types if a single SCI size is supported for various sidelink cast types which is equal to the maximum size of all the relevant cast types, the SCI format with the minimum effective SCI size will have to be padded with many zeros which will cause link performance penalty.
  • multiple SCI sizes are supported for various sidelink cast types, it implies a large blind decoding complexity for detecting the SCI.
  • multiple blind decoding may have to be tried for each sub-channel in each slot at each receiver, rather than only the target receiver (s) for purpose of sidelink channel sensing.
  • the two-stage SCI design was discussed.
  • the overall SCI is divided into two parts with the first part only containing the essential SCI fields with fixed SCI size for the purpose of enabling sidelink channel sensing by all other users and the second part containing all other control information fields with dynamic size indicated by the first SCI part for the purpose of enabling the target receiver (s) to decode the associated PSSCH.
  • the blind decoding complexity is kept minimum as in most cases the receiver only needs to monitor the first SCI part blindly which has fixed and low SCI size and only decode the second SCI part when it is the target receiver.
  • the present disclosure proposes a solution of resource configuration and mapping for the SCI.
  • the resource for the the second SCI part may be configured based on a specific mapping pattern related to the resources for the first SCI part.
  • FIG. 2 shows a schematic diagram of resource configuration for the SCI.
  • the process 200 will be described with reference to FIG. 1.
  • the process 200 may involve the terminal device 110-1 and the terminal device 110-2 as illustrated in FIG. 1.
  • FIG. 2 is used for only for illustrated the principles of the present disclosure and is not intended as limitation.
  • the role of the terminal device 110-1 and the terminal device 110-2 may be exchanged.
  • the terminal device 110-1 may determine 210 the resources for transmitting the first and second part of the SCI, respectively.
  • the terminal device 110-1 may determine a first set of resources for transmitting the first part of SCI. For example, the terminal device 110-1 may receive the resource pool (pre) configuration signaling from the network and determine a time-domain range and a frequency-domain range of the first set of resources based on the resource pool (pre) configuration signaling. The terminal device 110-1 may determine the first set of resources based on the determined the time and frequency domain range.
  • the first part of SCI may be sensed by all other users, to enable the other users to sense the sidelink channel for autonomous resource selection, which may mitigate the resource selection collisions and improve efficiency.
  • the indication of resources for transmitting may be obtained from the first part of SCI, to cause the target user to decode the second part of SCI on the corresponding resources. Therefore, how to determine the resources for transmitting the second part of SCI and how to indicate the resources for transmitting the second part of SCI to the target user may be discussed as below.
  • the resources for transmitting the second part of SCI may be referred to as “a second set of resources”
  • a first set of resources may be determined related to the resource for transmitting the first part of SCI, hereafter may be referred to “a first set of resources. ”
  • the association of multiplexing between the first set of resources and the second set of resources in a frequency domain or in a time domain may be indicated by a resource configuration pattern.
  • the resource configuration pattern may indicate that the second part of SCI may be preferably mapped to the second set of resources that are frequency multiplexed with the first part of SCI in the same OFDM symbols.
  • the resource configuration pattern may indicate that the second part of SCI may be preferably mapped to the second set of resources that are time multiplexed with the first part of SCI in different OFDM symbols.
  • the determination of the resource configuration pattern may be achieved in various ways.
  • the resource configuration pattern may be obtained from the resource pool (pre) configuration signaling received from the network.
  • the determination of the resource configuration pattern may depend on the power boosting factor for the first part of the SCI and /or the time pattern of a DMRS for the associated sidelink shared channel transmitted from the terminal device 110-1 to the terminal device 110-2 associated with a low or high mobility.
  • a low mobility means that the channel estimation accuracy is acceptable for the few front OFDM symbols while a high mobility means that the channel estimation quality based on PSSCH-DMRS over the front OFDM symbols may be quite low.
  • the second part of SCI is preferably mapped to the second set of resources that are frequency multiplexed with the first part of SCI in the same OFDM symbols.
  • the communication scenario is high mobility which means a DMRS time pattern for high mobility is used, and /or, a power boosting is used for the first part of SCI, it is beneficial that the second part of SCI is preferably mapped to the second set of resources that are time multiplexed with the first part of SCI in the different OFDM symbols.
  • the resources for transmitting the DMRS may be considered for determining the second set of resource.
  • the association with the resources for transmitting the DMRS for the associated physical sidelink shared channel may be considered in determining the second set of resources.
  • available resources for the second set of resources may be determined from near to far according to the distance to the first PSSCH-DMRS symbol within the OFDM symbols occupied by the first part of SCI.
  • the terminal device 110-1 may also determine whether the available resources are sufficient for the second part of the SCI.
  • the terminal device 110-1 may determine the number of SCI Resource Blocks (SRB) in one SCI Resource block Group (s) (SRG) and the number of SRG for the second part of SCI which is also called the aggregation level for the second part of SCI.
  • SRB SCI Resource Blocks
  • SRG SCI Resource block Group
  • the second part of SCI may be mapped to at least one SRG and each SRG may comprises a certain number (for example, 6) of SRB.
  • the SRB may be represented as a physical resource block (PRB) consisting of 12 contiguous subcarriers.
  • one or more SRGs are allocated in the available bandwidth of the sidelink transmission bandwidth. Furthermore, for each SRG, the certain number of SRBs is distributed within the available bandwidth of the sidelink transmission bandwidth.
  • the terminal device 110-1 may determine the corresponding numbers of PRB in the available resources and determine whether the available resources are sufficient for the second part of the SCI based on the resource configuration pattern, the number of SRGs for the second part of the SCI and the available resources for the second set of resources.
  • the terminal device 110-1 may determine the second part of resources from the available resources based on the number of SRGs for the second part of the SCI and the number of SRBs in each SRG.
  • the terminal device 110-1 may determine a portion of the second part of resources from the available resources based on the number of SRGs for the second part of the SCI and the number of SRBs in each SRG.
  • the rest portion of the second part of resources may be determined in the OFDM symbol (s) that are beyond the OFDM symbols for the first part of SCI from near to far according to the distance to the first PSSCH-DMRS symbol.
  • available resources for the second set of resources may be determined from near to far according to the first PSSCH-DMRS symbol starting from the OFDM symbol that immediately follows the first part of SCI.
  • the terminal device 110-1 may determine the second set of resources based on the above-mentioned resource configuration pattern and additional resource allocation mechanism, for example, the location of the PSSCH-DMRS symbol and the number of SRG for the second part of SCI and the number of SRBs per SRG.
  • the first part of SCI may comprise the indication of resource configuration pattern for the second set of resource to cause the terminal device 110-2 to decode the second part of SCI, if necessary.
  • the resource configuration pattern may be indicated in an individual field of the first part of SCI to indicate the resource allocation for the second set of resources.
  • the resource configuration pattern may be indicated by the first part of SCI via other relevant control information fields (e.g. indicator to DMRS time pattern and/or indicator to power boosting of the first part of SCI) .
  • other relevant control information fields e.g. indicator to DMRS time pattern and/or indicator to power boosting of the first part of SCI
  • the resource configuration pattern may also be indicated via the resource pool configuration signaling.
  • the terminal device 110-1 After determining the first and second set of resources, the terminal device 110-1 transmits 220 the first and the second part of the SCI to the terminal device 110-2.
  • the terminal device 110-2 may decode the first part of SCI to determine the second set of resources for the second part of SCI and decode 230 the second part of SCI based on the determined second set of resources.
  • FIGs. 3A-3D and FIGs. 4A-4D show some examples for resource allocation for the first and second part of SCI, respectively.
  • the resource configuration for the SCI, especially for the second part of SCI will be better understood.
  • each sub-channel (for example, sub-channel 310) consists of 6 PRBs and 3 sub-channels are allocated for the sidelink transmission.
  • each SCI resource block group consists of 6 PRBs for second part of SCI and first part of SCI spans 6 PRBs in frequency domain.
  • the second part of SCI is preferably mapped to the second set of resources that are time multiplexed with the first set of resources 320 for the first part of SCI in the different OFDM symbols (other than the 1 st and the 2 nd OFDM symbols) , as shown in FIG. 3A, if the second part of SCI involves 4 SRGs, the first three SRGs, i.e. the first, second and third SRGs are mapped to the 4 th OFDM symbol which is closest to the first PSSCH-DMRS 330 symbol (at the 3 rd OFDM symbol) .
  • FIG. 3A shows two alternatives for the resource mapping: one with the fourth SRG mapped to the resource in 5 th OFDM symbol and the other with the fourth SRG mapped to the resource in 2 nd OFDM symbol. It should be understood that only one alternative is used and for the other alternative, the relevant PRBs will be used for data.
  • the second part of SCI is preferably mapped to the second set of resources that are frequency multiplexed with the first set of resources 320 for the first part of SCI in the same OFDM symbols (the 1 st and the 2 nd OFDM symbols) , as shown in FIG. 3B, if the second part of SCI involves 4 SRGs, the first two SRGs, the first and the second SRGs are mapped to the 2 nd OFDM symbol which is closer to the first PSSCH-DMRS 330 symbol (at the 3 rd OFDM symbol) than the 1 st OFDM symbol, meanwhile the third and the fourth SRGs are mapped to the 1 st OFDM symbol.
  • PSSCH-DMRS time pattern for low mobility is used and that the power boosting is not used for the first part of SCI
  • the SRG is allocated for the second part of SCI, as shown in FIG. 3C, the SRG is mapped to the 2 nd OFDM symbol which is closest to the first PSSCH-DMRS 330 symbol (at the 3 rd OFDM symbol) .
  • PSSCH-DMRS time pattern for high mobility is used and/or the power boosting is used for the first part of SCI, which may be indicated in first part of SCI
  • PSSCH-DMRS time pattern for high mobility is used and/or the power boosting is used for the first part of SCI, which may be indicated in first part of SCI
  • one SRG is allocated for the second part of SCI, as shown in FIG. 3D, the SRG is mapped to the 4 th OFDM symbol which is closest to the first PSSCH-DMRS 330 symbol (at the 3 rd OFDM symbol) .
  • the power boosting means that the powers of the resource elements of first part of SCI is boosted compared with the powers of the data resource elements in the same OFDM symbols.
  • the resource configuration pattern could be indicated by first part of SCI explicitly or implicitly or configured by the resource pool configuration signaling.
  • each sub-channel (for example, sub-channel 410) consists of 14 PRBs and 1 sub-channel are allocated for the sidelink transmission.
  • each SCI resource block group consists of 6 PRBs for second part of SCI and first part of SCI spans 6 PRBs in frequency domain.
  • the second part of SCI is preferably mapped to the second set of resources that are frequency multiplexed with the first set of resources 420 for the first part of SCI in the same OFDM symbols (the 1 st and the 2 nd OFDM symbols) , as shown in FIG. 4A, if the second part of SCI involves 4 SRGs, the first two SRGs are respectively mapped to the 2 nd OFDM symbol and the 1 st OFDM symbol and the third and the fourth SRGs are mapped to the OFDM symbol (the 4 th symbol) behind the first PSSCH-DMRS 430 symbol (the 3 rd symbol) .
  • the second part of SCI is preferably mapped to the second set of resources that are time multiplexed with the first set of resources 420 for the first part of SCI in the different OFDM symbols (other than the 1 st and the 2 nd OFDM symbols) , as shown in FIG. 4B, if the second part of SCI involves 4 SRGs, the first two SRGs are mapped to the 4 th symbol which is closest to the first PSSCH-DMRS 430 symbol (at the 3 rd symbol) .
  • FIG. 4B shows two alternatives for the resource mapping: one with the third and the fourth SRGs mapped to the resource in 5 th OFDM symbol and the other with the third and the fourth SRGs mapped to the resource in 2 nd and 1 st OFDM symbols. It should be understood that only one alternative is used and for the other alternative, the relevant PRBs will be used for data.
  • PSSCH-DMRS time pattern for low mobility is used and that the power boosting is not used for the first part of SCI, which may be indicated in first part of SCI
  • two SRGs are allocated for the second part of SCI, as shown in FIG. 4C, the first SRG and the second SRG are mapped to the 2 nd and the 1 st OFDM symbol, respectively.
  • the first SRG is closer to the first PSSCH-DMRS 430 symbol (at the 3 rd OFDM symbol) than the second SRG.
  • PSSCH-DMRS time pattern for high mobility is used and/or the power boosting is used for the first part of SCI and assume that two SRGs are allocated for the second part of SCI, as shown in FIG. 3D, the first SRG and the second SRGs are mapped to the 4 th OFDM symbol which is closest to the first PSSCH-DMRS 430 symbol (at the 3 rd OFDM symbol) .
  • the power boosting means that the powers of the resource elements of first part of SCI is boosted compared with the powers of the data resource elements in the same OFDM symbols.
  • the resource configuration pattern could be indicated by first part of SCI explicitly or implicitly or configured by the resource pool configuration signaling.
  • FIG. 5 shows a flowchart of an example method 500 of resource configuration for the SCI. According to some example embodiments of the present disclosure.
  • the method 500 can be implemented at the first device 110-1 as shown in FIG. 1. For the purpose of discussion, the method 500 will be described with reference to FIG. 1.
  • the first device 110-1 determines a first set of resources for transmitting a first part of SCI.
  • the first device 110-1 may receive a resource pool configuration signaling and determine a time-domain range of the first set of resources and a frequency-domain range of the first set of resources based on the resource pool configuration signaling. The first device 110-1 may determine the first set of resources based on the time and frequency domain range.
  • the first device 110-1 determines a second set of resources for transmitting a second part of SCI at least based on a resource configuration pattern and the first set of resources.
  • the resource configuration pattern may at least indicate a first association of multiplexing between the first set of resources and the second set of resources in a time domain or in a frequency domain.
  • the first device 110-1 may determine the resource configuration pattern based on at least one of a resource pool configuration signaling, a time pattern of a demodulation reference signal for the associated sidelink shared channel from the first device to the second device associated with mobility and a power boosting factor for the first part of the sidelink control information.
  • the first device 110-1 may determine an aggregation level (i.e. the number of SRGs) of the second set of resources, the aggregation level indicating the number of resource groups to be used for the second set of resources.
  • an aggregation level i.e. the number of SRGs
  • the first device 110-1 may determine available resources for the second set of resources based on the resource configuration pattern of frequency-domain multiplexing with the first set of resources and resources for transmitting a demodulation reference signal adjacent to the available resources. The first device 110-1 may further determine whether the available resources are sufficient for the second set of resources based on the aggregation level for the second set of resources, the available resources and the resources for transmitting a demodulation reference signal. If the first device 110-1 determines that that the available resources are sufficient for the second set of resources, the first device 110-1 may determine the second set of resources from the available resources based on based on the aggregation level and the resources for transmitting a demodulation reference signal.
  • the first device 110-1 determines determine a first portion of the second set of resources from the available resources based on the resource configuration pattern and a second portion of the second set of resources from further available resources beyond the available resources based on the resources for transmitting the demodulation reference signal adjacent to the available resources and the aggregation level.
  • the first device 110-1 may determine group indices for physical resource block groups in at least one of the available resources and the further available resources based on the aggregation level and determine distribution of the physical resource blocks based on the group indices, a frequency-domain range of at least one of the available resources and the further available resources and the resources for transmitting the demodulation reference signal adjacent to the available resources.
  • the first device 110-1 may determine available resources for the second set of resources the resource configuration pattern of time-domain multiplexing with the first set of resources and resources for transmitting a reference signal adjacent to the available resources.
  • the first device 110-1 may further determine the second set of resources from the available resources based on the aggregation level, the available resources and the resources for transmitting a demodulation reference signal.
  • the first device 110-1 may determine group indices for physical resource block groups in the available resources; and determine distribution of the physical resource blocks based on the group indices, a frequency-domain range of the available resources and the resources for transmitting the demodulation reference signal adjacent to the available resources.
  • the first device 110-1 transmits the first part of SCI on the first set of resources and the second part of SCI on the second set of resources to a second device 110-2.
  • the first device 110-1 may generate an indication of the resource configuration pattern and transmit the indication via the first part of the SCI over sidelink control channel to the second device.
  • the first device 110-1 may generate the indication with at least one of a dedicated sidelink control information field for the resource configuration pattern, a sidelink control information fields indicating power boosting factor; and a sidelink control information fields indicating time pattern of a demodulation reference signal of the associated sidelink shared channel between the first device and the second device.
  • FIG. 6 shows a flowchart of an example method 600 of resource configuration for the SCI according to some example embodiments of the present disclosure.
  • the method 600 can be implemented at the second device 110-2 as shown in FIG. 1. For the purpose of discussion, the method 600 will be described with reference to FIG. 1.
  • the second device 110-2 receives a first part of SCI on a first set of resources.
  • the second device 110-2 determines a resource configuration pattern based on one of the first part of SCI and the resource pool configuration signaling.
  • the resource configuration pattern may at least indicate a first association of multiplexing between the first set of resources and a second set of resources for the second part of SCI in a time domain or in a frequency domain.
  • the second device 110-2 determines the second set of resources based on the resource configuration pattern and first set of resources.
  • the second device 110-2 may determine an aggregation level for the second set of resources, the aggregation level indicating the number of resource groups to be used for the second set of resources and determine the second set of resources at least based on the resource configuration pattern, the first set of resources and the aggregation level for the second set of resources.
  • the second device 110-2 may obtain an indication of the resource configuration pattern by decoding the first part of the SCI and determines the resource configuration pattern based on the indication.
  • the second device 110-2 receives the second part of the SCI on the second set of resources.
  • an 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 apparatus comprises means for determining a first set of resources for transmitting a first part of SCI; means for determining a second set of resources for transmitting a second part of SCI at least based on a resource configuration pattern and the first set of resources, the resource configuration pattern at least indicating a first association of multiplexing between the first set of resources and the second set of resources in a time domain or in a frequency domain; and means for transmitting the first part of SCI on the first set of resources and the second part of SCI on the second set of resources to a second device.
  • an apparatus capable of performing the method 600 may comprise means for performing the respective steps of the method 600.
  • the means may be implemented in any suitable form.
  • the means may be implemented in a circuitry or software module.
  • the apparatus comprises means for receiving a first part of SCI on a first set of resources from a first device; means for determine a resource configuration pattern based on one of the first part of SCI and the resource pool configuration signaling, the resource configuration pattern at least indicating a first association of multiplexing between the first set of resources and a second set of resources for transmitting the second part of SCI in a time domain or in a frequency domain; means for determining the second set of resources at least based on the resource configuration pattern and the first part of SCI; and means for receiving the second part of the SCI on the second set of resources from the first device.
  • FIG. 7 is a simplified block diagram of a device 700 that is suitable for implementing embodiments of the present disclosure.
  • the device 700 may be provided to implement the communication device, for example the first device 110-1 and the second device 110-2 as shown in FIG. 1.
  • the device 700 includes one or more processors 710, one or more memories 720 coupled to the processor 710, and one or more transmitters and/or receivers (TX/RX) 740 coupled to the processor 710.
  • TX/RX transmitters and/or receivers
  • the TX/RX 740 is for bidirectional communications.
  • the TX/RX 740 may have 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 710 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 700 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 720 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) 724, 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.
  • the volatile memories include, but are not limited to, a random access memory (RAM) 722 and other volatile memories that will not last in the power-down duration.
  • a computer program 730 includes computer executable instructions that are executed by the associated processor 710.
  • the program 730 may be stored in the ROM 720.
  • the processor 710 may perform any suitable actions and processing by loading the program 730 into the RAM 722.
  • the embodiments of the present disclosure may be implemented by means of the program 730 so that the device 700 may perform any process of the disclosure as discussed with reference to FIGs. 2 to 6.
  • the embodiments of the present disclosure may also be implemented by hardware or by a combination of software and hardware.
  • the program 730 may be tangibly contained in a computer readable medium which may be included in the device 700 (such as in the memory 720) or other storage devices that are accessible by the device 700.
  • the device 700 may load the program 730 from the computer readable medium to the RAM 722 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. 8 shows an example of the computer readable medium 800 in form of CD or DVD.
  • the computer readable medium has the program 730 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, apparatus, 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 500 and 600 as described above with reference to FIGs. 2-6.
  • program modules 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 apparatus, 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, apparatus 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, apparatus, 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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Abstract

Des modes de réalisation de la présente divulgation concernent des dispositifs, des procédés, des appareils et des supports de stockage lisibles par ordinateur de configuration de ressources pour des informations de commande de liaison latérale (SCI). Le procédé fait appel aux étapes suivantes : la détermination, au niveau d'un premier dispositif, d'un premier ensemble de ressources pour la transmission d'une première partie d'informations de commande de liaison latérale; la détermination d'un second ensemble de ressources pour la transmission d'une seconde partie d'informations de commande de liaison latérale sur la base d'un motif de configuration de ressources et du premier ensemble de ressources, le motif de configuration de ressources indiquant au moins une première association de multiplexage entre le premier ensemble de ressources et le second ensemble de ressources dans un domaine temporel ou dans un domaine fréquentiel; et la transmission de la première partie de SCI sur le premier ensemble de ressources et de la seconde partie de SCI sur le second ensemble de ressources à un second dispositif. De cette manière, un nouveau mécanisme de configuration de ressources pour les SCI à deux étages pourrait être obtenu, ce qui entraîne la diminution de la complexité de décodage aveugle.
PCT/CN2019/102623 2019-08-26 2019-08-26 Configuration de ressources d'informations de commande de liaison latérale Ceased WO2021035490A1 (fr)

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CN201980099719.6A CN114342534B (zh) 2019-08-26 2019-08-26 侧链路控制信息的资源配置

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