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WO2021098713A1 - Procédé d'attribution de ressource et produit associé - Google Patents

Procédé d'attribution de ressource et produit associé Download PDF

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Publication number
WO2021098713A1
WO2021098713A1 PCT/CN2020/129702 CN2020129702W WO2021098713A1 WO 2021098713 A1 WO2021098713 A1 WO 2021098713A1 CN 2020129702 W CN2020129702 W CN 2020129702W WO 2021098713 A1 WO2021098713 A1 WO 2021098713A1
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Prior art keywords
sub
channel
resource
type
determining
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PCT/CN2020/129702
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English (en)
Inventor
Zhenshan Zhao
Qianxi Lu
Huei-Ming Lin
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Publication of WO2021098713A1 publication Critical patent/WO2021098713A1/fr
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0044—Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH
    • 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

Definitions

  • the present disclosure generally relates to a radio resource management, in particular, to a resource allocation method and a related product.
  • the LTE-based C-V2X standard focuses on communication between vehicles and other objects, e.g., vehicle to vehicle, vehicle to infrastructure, vehicle to pedestrian, and so on.
  • the C-V2X communication includes a device-to-device (D2D) communication based on proximity-based services (ProSe) .
  • D2D device-to-device
  • ProSe proximity-based services
  • the vehicle-to-vehicle (V2V) communication is an extension of the D2D communication, which uses a PC5 interface to enhance direct connection and communication between vehicles.
  • NR-V2X fifth-generation new radio vehicle-to-everything
  • 5G fifth-generation new radio vehicle-to-everything
  • NR-V2X fifth-generation new radio vehicle-to-everything
  • Multiple physical sidelink channels are defined for carrying control information or traffic data.
  • the resource allocating mechanism for these sidelink physical sidelink channels is not flexible, and some resourses may be wasted.
  • Exemplary embodiments of the disclosure provide a resource allocation method and a related product, to provide flexible resource allocation on sub-channel.
  • the resource allocation method is adapted for a user equipment (UE) communicating with another UE via sidelink.
  • the resource allocation method includes, but is not limited to, the following steps.
  • a first resource for physical sidelink control channel (PSCCH) on a symbol within a sub-channel is determined.
  • the symbol is a radio resource in the time domain
  • the sub-channel is a radio resource in the frequency domain
  • the first resource occupies a first part of the sub-channel
  • the first part of the sub-channel is less than a whole of the sub-channel
  • the PSCCH is related to a radio resource conveying traffic data over the sidelink.
  • a second resource to be used for transmission is determined.
  • the second resource occupies a second part of the sub-channel not overlapped with the first part of the sub-channel, and a sum of the first part and second part of the sub-channels is less than or equals to the whole of the sub-channel.
  • a UE includes, but is not limited to, a memory and one or more processors.
  • the memory is used for storing program code.
  • the one or more processor are coupled to the memory and used for executing the program code to perform: determining a first resource for PSCCH on a symbol within a sub-channel, and determining a second resource to be used for transmission on the symbol within the sub-channel.
  • the symbol is a radio resource in the time domain
  • the sub-channel is a radio resource in the frequency domain
  • the first resource occupies a first part of the sub-channel
  • the first part of the sub-channel is less than a whole of the sub-channel
  • the PSCCH is related to a radio resource conveying traffic data over a sidelink.
  • the second resource occupies a second part of the sub-channel not overlapped with the first part of the sub-channel, and a sum of the first part and second part of the sub-channels is less than or equals to the whole of the sub-channel.
  • a resource allocating apparatus includes, but is not limited to, a first resource allocating module and a second resource allocating module.
  • the first resource allocating module is configured to determine a first resource for PSCCH on a symbol within a sub-channel.
  • the symbol is a radio resource in time domain
  • the sub-channel is a radio resource in frequency domain
  • the first resource occupies a first part of the sub-channel
  • the first part of the sub-channel is less than a whole of the sub-channel
  • the PSCCH is related to a radio resource conveying traffic data over a sidelink.
  • the second resource allocating module is configured to determine a second resource to be used for a transmission on the symbol within the sub-channel.
  • the second resource occupies a second part of the sub-channel not overlapped with the first part of the sub-channel, and a sum of the first part and second part of the sub-channels is less than or equals to the whole of the sub-channel.
  • a non-transitory computer-readable medium includes program code that executed by a processor to perform: determining a first resource for PSCCH on a symbol within a sub-channel, and determining a second resource to be used for transmission on the symbol within the sub-channel.
  • the symbol is a radio resource in time domain
  • the sub-channel is a radio resource in frequency domain
  • the first resource occupies a first part of the sub-channel
  • the first part of the sub-channel is less than a whole of the sub-channel
  • the PSCCH is related to a radio resource conveying traffic data over a sidelink.
  • the second resource occupies a second part of the sub-channel not overlapped with the first part of the sub-channel, and a sum of the first part and second part of the sub-channels is less than or equals to the whole of the sub-channel.
  • a chip executes program code to perform: determining a first resource for PSCCH on a symbol within a sub-channel, and determining a second resource to be used for transmission on the symbol within the sub-channel.
  • the symbol is a radio resource in the time domain
  • the sub-channel is a radio resource in the frequency domain
  • the first resource occupies a first part of the sub-channel
  • the first part of the sub-channel is less than a whole of the sub-channel
  • the PSCCH is related to a radio resource conveying traffic data over a sidelink.
  • the second resource occupies a second part of the sub-channel not overlapped with the first part of the sub-channel, and a sum of the first part and second part of the sub-channels is less than or equals to the whole of the sub-channel.
  • a computer program is operable with a processor to execute: determining a first resource for PSCCH on a symbol within a sub-channel, and determining a second resource to be used for transmission on the symbol within the sub-channel.
  • the symbol is a radio resource in the time domain
  • the sub-channel is a radio resource in the frequency domain
  • the first resource occupies a first part of the sub-channel
  • the first part of the sub-channel is less than a whole of the sub-channel
  • the PSCCH is related to a radio resource conveying traffic data over a sidelink.
  • the second resource occupies a second part of the sub-channel not overlapped with the first part of the sub-channel, and a sum of the first part and second part of the sub-channels is less than or equals to the whole of the sub-channel.
  • a computer program product includes a non-transitory computer-readable medium that stores a computer program.
  • the computer program is operable with a processor to execute: determining a first resource for PSCCH on a symbol within a sub-channel, and determining a second resource to be used for transmission on the symbol within the sub-channel.
  • the symbol is a radio resource in the time domain
  • the sub-channel is a radio resource in the frequency domain
  • the first resource occupies a first part of the sub-channel
  • the first part of the sub-channel is less than a whole of the sub-channel
  • the PSCCH is related to a radio resource conveying traffic data over a sidelink.
  • the second resource occupies a second part of the sub-channel not overlapped with the first part of the sub-channel, and a sum of the first part and second part of the sub-channels is less than or equals to the whole of the sub-channel.
  • FIG. 1A is a schematic diagram of a communication system according to an exemplary embodiment of the present disclosure.
  • FIG. 1B is a schematic diagram of a communication system according to an exemplary embodiment of the present disclosure.
  • FIG. 2A is a block diagram of a user equipment (UE) according to an exemplary embodiment of the present disclosure.
  • UE user equipment
  • FIG. 2B is a block diagram of a UE according to an exemplary embodiment of the present disclosure.
  • FIG. 3 is a flowchart of a resource allocation method according to an exemplary embodiment of the present disclosure.
  • FIG. 4 is a schematic diagram illustrating resource allocation according to an exemplary embodiment of the present disclosure.
  • FIG. 5 is a schematic diagram illustrating resource allocation according to an exemplary embodiment of the present disclosure.
  • FIG. 6 is a schematic diagram illustrating resource allocation according to an exemplary embodiment of the present disclosure.
  • FIG. 7 is a schematic diagram illustrating resource allocation according to an exemplary embodiment of the present disclosure.
  • FIG. 8 is a schematic diagram illustrating resource allocation according to an exemplary embodiment of the present disclosure.
  • FIG. 9 is a schematic diagram illustrating resource allocation according to an exemplary embodiment of the present disclosure.
  • FIG. 10 is a schematic diagram illustrating resource allocation according to an exemplary embodiment of the present disclosure.
  • FIG. 11 is a block diagram of a resource allocating apparatus according to an exemplary embodiment of the present disclosure.
  • FIG. 1A and 1B are schematic diagrams of communication systems 1a and 1b according to exemplary embodiments of the present disclosure.
  • the communication system 1a includes, but is not limited to, a base station 10 and two user equipments (UEs) 50 and 70.
  • the communication system 1a may further include other core network entities such as a mobile management entity (MME) , a serving gateway (S-GW) , and a packet data network gateway (P-GW) .
  • MME mobile management entity
  • S-GW serving gateway
  • P-GW packet data network gateway
  • the embodiments of the disclosure are not limited thereto.
  • the communication system 1b includes, two user equipments (UEs) 50 and 70 without the base station 10.
  • the communication systems 1a and 1b may be applied to, for example, a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, a wideband code division multiple access (WCDMA) system, a long term evolution (LTE) system, an LTE frequency division duplex (FDD) system, LTE time division duplex (TDD) , a universal mobile telecommunication system (UMTS) , a new radio (NR) system, or other mobile communication systems.
  • GSM global system of mobile communication
  • CDMA code division multiple access
  • WCDMA wideband code division multiple access
  • LTE long term evolution
  • LTE long term evolution
  • FDD frequency division duplex
  • TDD LTE time division duplex
  • UMTS universal mobile telecommunication system
  • NR new radio
  • the base station 10 may have various implementations, for example (but not limited to) , a home evolved Node B (HeNB) , an eNB, a next generation Node B (gNB) , an integrated access and backhaul (IAB) network node, an advanced base station (ABS) , a base transceiver system (BTS) , a relay, a repeater, a cell and/or a satellite-based communication base station.
  • the base station 10 may provide access service within its coverage C.
  • the UEs 50 and 70 may have various implementations, for example (but not limited to) , a mobile station, an advanced mobile station (AMS) , a telephone apparatus, customer premise equipment (CPE) , a wireless sensor, a handheld device with wireless communication function, a computing device or other processing devices connected to wireless modems, an in-vehicle device, a wearable device, or the like.
  • the UEs 50 and 70 may be used for vehicle-to-everything (V2X) , vehicle-to-vehicle (V2V) , device-to-device (D2D) communication, proximity service (ProSe) , or another technology of direct communication between two apparatuses.
  • V2X vehicle-to-everything
  • V2V vehicle-to-vehicle
  • D2D device-to-device
  • ProSe proximity service
  • FIG. 2A is a block diagram of the UE 50 according to an exemplary embodiment of the present disclosure.
  • the UE 50 includes, but is not limited to, an antenna 51, a receiver 52, a transmitter 53, an analog-to-digital/digital-to-analog converter 54, a memory 55, and one or more processors 56.
  • the antenna 51 is coupled to the receiver 52 and the transmitter 53.
  • the analog-to-digital/digital-to-analog converter 54 is coupled to the receiver 52, the transmitter 53, and the processor 56.
  • the processor 56 is further coupled to the memory 55.
  • the receiver 52 and the transmitter 53 are respectively configured to wirelessly receive a downlink signal and transmit an uplink signal through the antenna 51.
  • the receiver 52 and the transmitter 53 may also perform analog signal processing operations such as low noise amplification, impedance matching, frequency mixing, up-conversion or down-conversion, filtering, amplification, and the like.
  • the analog-to-digital/digital-to-analog converter 54 is configured to convert the downlink signal from an analog signal format to a digital signal format, and convert the uplink signal from the digital signal format to the analog signal format.
  • the memory 55 may be any type of fixed or removable random access memory (RAM) , a read-only memory (ROM) , a flash memory or a similar element, or a combination of the foregoing elements.
  • the memory 55 records a program code, apparatus configuration, a codebook, buffered or permanent data, and records various communication protocol-related software modules such as a radio resource control (RRC) layer, a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, a media access control (MAC) layer, and the like, and data thereof.
  • RRC radio resource control
  • PDCP packet data convergence protocol
  • RLC radio link control
  • MAC media access control
  • the one or more processors 56 are configured to process a digital signal, load and execute a program code from the memory 55 according to an exemplary embodiment of the disclosure, and may access or load data and software modules recorded in the memory 55.
  • a function of the processor 56 may be implemented by using programmable units such as a central processing unit (CPU) , a microprocessor, a microcontroller, a digital signal processing (DSP) chip, a field programmable logic gate array (FPGA) , and the like.
  • the function of the processor 56 may also be implemented by using an independent electronic device or an integrated circuit (IC) , and the operations of the processor 56 may be implemented through software.
  • FIG. 2B is a block diagram of the UE 70 according to an exemplary embodiment of the present disclosure.
  • the UE 70 includes, but is not limited to, an antenna 71, a receiver 72, a transmitter 73, an analog-to-digital/digital-to-analog converter 74, a memory 75, and one or more processors 76.
  • the implementing embodiments and their detailed descriptions of the antenna 71, the receiver 72, the transmitter 73, the analog-to-digital/digital-to-analog converter 74, the memory 75, and the processor 76 may refer to the descriptions of the antenna 51, the receiver 52, the transmitter 53, the analog-to-digital/digital-to-analog converter 54, the memory 55, and the processor 56, respectively.
  • the radio resource of the UE 50 or the UE 70 which is located within the coverage C, is allocated by the base station 10.
  • the radio resource of the UE 50 or the UE 70 which is located within the coverage C, is allocated by the base station 10.
  • the traffic data to be transmitted over sidelink SL which may be a device to device (D2D) link or a terminal direct link between the UEs 50 and 70)
  • D2D device to device
  • this UE 50 may request radio resource for the sidelink SL from the base station 10.
  • the base station 10 may further indicate the resource allocation for the transmission of the sidelink SL in the downlink control information (DCI) conveyed by the physical downlink control channel (PDCCH) over the downlink DL. Then, the UEs 50 and 70 may perform data transmission on a sidelink SL according to the resource allocated by the base station 10.
  • DCI downlink control information
  • PDCCH physical downlink control channel
  • the UE 50 or the UE 70 maybe not located within the coverage C.
  • the UE 50 may autonomously select radio resource for the sidelink SL from a (pre-) configured sidelink resource pool (s) based on the channel sensing mechanism.
  • FIG. 3 is a flowchart of a resource allocation method according to an exemplary embodiment of the present disclosure.
  • the processor 56 or 75 may determine a first resource for physical sidelink control channel (PSCCH) on a symbol within a sub-channel (step S310) .
  • PSCCH physical sidelink control channel
  • the UE 50 is a transmitting terminal, which intends to transmit traffic data to the UE 70, as a receiving terminal.
  • the UE 50 could be a receiving terminal, and the UE 70 could be a transmitting terminal.
  • the PSCCH and associated physical sidelink shared channel are multiplexed within the same slot.
  • the two-stage sidelink control information was supported in NR-V2X.
  • the first stage SCI of the two-stage SCI is conveyed in the PSCCH.
  • the second stage SCI is mapped within the resource of the PSSCH, and the demodulation of second stage SCI is based on the PSSCH demodulation reference signal (DMRS) .
  • DMRS PSSCH demodulation reference signal
  • the first stage SCI is used to indicate the resource of the PSSCH, and also the resource or format of second stage SCI.
  • a receiving UE When a receiving UE can decode the PSCCH correctly, it can know the resource or format of the second stage SCI, so that it does not need to do blind detection of the second stage SCI. Furthermore, the other parameters, such as hybrid automatic repeat request (HARQ) process ID, new data indicator (NDI) , source ID, etc., that are needed to decode the PSSCH are conveyed in the second stage SCI.
  • HARQ hybrid automatic repeat request
  • NDI new data indicator
  • source ID source ID
  • the sub-channel is the granularity in the frequency domain, and one sub-channel consists of several consecutive resource blocks (RBs) in the frequency domain.
  • the size of one sub-channel may be (pre-) configured.
  • the number of RBs per sub-channel can be set to one of the following values, for example, 10, 15, 20, 25, 50, 75, or 100.
  • the resource of the PSCCH (which may be used to convey the first stage SCI) in the time domain is 2 or 3 symbols within a slot.
  • the first symbol of the slot is used for automatic gain control (AGC)
  • AGC automatic gain control
  • the PSCCH can be mapped to a resource that starts from the second symbol within the slot.
  • the first symbol is also mapped with the PSCCH, and the total number of symbols used for the PSCCH would be 3 or 4.
  • the aforementioned PSCCH, PSSCH, or two-stage SCI may occupy the whole of one sub-channel.
  • the control information or the traffic data may not need to occupy the whole allocated resource.
  • NR-V2X it provides a flexible resource structure to allocate resource for the PSCCH, PSSCH, or the two-stage SCI. Therefore, there is a need for a mechanism that maps these channels or the information on the sub-channel other than the conventional approaches.
  • the processor 56 may generate the SCI for the UE 70 to indicate the resource and/or configuration to receive the traffic data to be transmitted.
  • the processor 56 may use, through the transmitter 53, the pysical sidelink control channel (PSCCH) to convery the SCI, that carries information related to sidelink transmission with the UE 70, such as modulation coding mode (MCS) , time-frequency resource allocation information, and resource reservation information.
  • PSCCH pysical sidelink control channel
  • MCS modulation coding mode
  • the two-stage SCI may be applied on the UEs 50 and 70.
  • the two-stage SCI includes a first type (which may be called as the first stage SCI) and a second type (which may be called as the second stage SCI) .
  • the first type of the two-stage SCI indicates the radio resource conveying the traffic data on the data channel to be transmitted and the second type of the two-stage SCI, and/or the format (such as demodulation and/or coding mechanism) of the second type of the two-stage SCI.
  • the first type can point to the exact time and frequency resources of the physical sidelink shared channel (PSSCH) or another data channel, and the demodulation reference signal (DMRS) pattern and antenna port for the second type of the two-stage SCI. Therefore, the UE 70 may know how to detect the data channel and the second type of the two-stage SCI without blind detection.
  • PSSCH physical sidelink shared channel
  • DMRS demodulation reference signal
  • the second type of the two-stage SCI is related to decoding of the traffic data on the data channel (such as the PSSCH) .
  • the second type of the two-stage SCI includes MCS, UE-specific DMRS, hybrid automatic repeat request (HARQ) process ID, new data indicator (NDI) , source ID, destination ID, reserved field, etc.
  • the first resource is used by the first type of the two-stage SCI which is transmitted over PSCCH.
  • the first resource is used by the second type of the two-stage SCI which is also transmitted over PSCCH.
  • the first resource may be used for transmitting the information of both first type and second type of the two-stage SCI.
  • the first resource occupies a first part of the sub-channel over one symbol.
  • the symbol is a radio resource in the time domain.
  • the symbol is a orthogonal frequency division multiplexing (OFDM) symbol.
  • FIG. 4 is a schematic diagram illustrating resource allocation according to an exemplary embodiment of the present disclosure.
  • one time slot may include 14 symbols S0 ⁇ S13.
  • the first symbol S0 of the slot is used for automatic gain control (AGC) I1, then PSCCH I2, which conveys the first type of the two-stage SCI, may be located on the second and third symbols S1 and S2 within the slot.
  • PSSCH without DMRS I3, PSSCH with DMRS I4, the second type of the two-stage SCI I5, and guard period (GP) I6 are located on other symbols S3 ⁇ S14, respectively.
  • the second type of the two-stage SCI I5 is mapped into the resource region of PSSCH.
  • the second type of the two-stage SCI I5 is mapped onto the symbols S3 and S7 of the PSSCH with DMRS I4.
  • the resource elements (REs) used for second type of the two-stage SCI I5 and PSSCH with DMRS I4 are frequency division multiplexed (FDMed) .
  • the second type of the two-stage SCI I5 can be mapped on the symbols S1 and S2 of the PSCCH I2.
  • one time slot may include different numbers of the symbols.
  • the minimum unit for the resource scheduling in the time domain may be a slot.
  • only some of the symbols in a slot are available for sidelink transmissions, and the remaining symbols are reserved or used for the Uu transmissions with the base station 10.
  • the sub-channel is a radio resource in the frequency domain.
  • the minimum unit for resource scheduling in the frequency domain may be a sub-channel, which is composed of, for example, 10, 15, 20, 25, 50, 75, or 100 consecutive RBs based on practical configuration.
  • One RB may be composed of 12 consecutive subcarriers with the same specific subcarrier spacing.
  • multiple closely spaced orthogonal subcarrier signals with overlapping spectra are transmitted to convey data in parallel. Taking FIG. 4 as an example, the ACG I1 occupies two subchannels sc0 and sc1, and the PSCCH I2 occupies one subchannels sc0.
  • the first part of the sub-channel occupied by the first resource is less than the whole of the sub-channel.
  • the PSCCH can be mapped onto X RBs within a sub-channel of PSSCH, and X is equal to or less than the size of the whole of the sub-channel.
  • FIG. 5 is a schematic diagram illustrating resource allocation according to an exemplary embodiment of the present disclosure.
  • the size of the sub-channel sc2 of the PSSCH is 20 physical resource blocks (PRBs)
  • the PSCCH I2 is merely mapped onto 15 consecutive PRBs, which starts with the lowest frequency position within the sub-channel sc2. That means the first part of the sub-channel sc2 used for the first resource is 15 RBs, which is less than the whole of the sub-channel sc2. It should be noticed that the first part of the sub-channel sc2 is composed of consecutive RBs.
  • the first type of the two-stage SCI carried by the PSCCH may be mapped onto the first part of a sub-channel.
  • the number of resources used by the second type of the two-stage SCI is indicated by the PSCCH, i.e., the first type of the two-stage SCI.
  • the second type of the two-stage SCI may be mapped onto the first part of a sub-channel. Taking FIG. 4 as an example, the second type of the two-stage SCI I5 is merely mapped to part of RBs within sub-channel sc1 on the symbol S5.
  • the first part may not start with the lowest frequency position within the sub-channel.
  • the first part may start from the fifth RB within the sub-channel, where the first RB is located at the lowest frequency position.
  • the UE 70 may perform blind detection and decoding on the PSCCH or the other control channels and find the resources for the PSSCH or other data channels based on the decoded SCI. Therefore, the processor 76 may know where the first part for the first resource is located with in one sub-channel.
  • the processor 56 or 75 may determine a second resource to be used for a transmission on the symbol within the sub-channel (step S330) .
  • the second resource is located at the same symbol and the same sub-channel as the first resource.
  • the second resource occupies a second part of the sub-channel, which is not overlapped with the first part of the sub-channel.
  • the sum of the first part and second part of the sub-channels is less than or equals to the whole of the sub-channel.
  • the whole of the sub-channel is composed of 20 RBs
  • the first part used for the first resource is 10 RBs
  • the second part used for the second resource is 3 RBs.
  • the whole of the sub-channel is composed of 15 RBs
  • the first part used for the first resource is 10 RBs
  • the second part used for the second resource is 5 RBs.
  • the second resource is used for the traffic data of the transmission over the data channel, such as the PSSCH. In another embodiment, the second resource is used for the second type of the two-stage SCI of the transmission over the PSSCH. In some embodiments, the second resource may not be used by the UE 50, or the second resource is used by other control channels or other information.
  • the processor 56 may transmit the first type of the two-stage SCI by using the first resource over PSCCH, through the transmitter 53, to indicate the location of the second resource or the second part of the sub-channel.
  • the processor 76 decodes the first type of the two-stage SCI, the UE 70 may know the location of the second resource (or the second sub-channel) and further detect the second resource.
  • the processor 56 may disable that the second resource occupies a third part of the sub-channel, which is not overlapped with the first part of the sub-channel.
  • the sum of the first part and third part of the sub-channels is the whole of the sub-channel.
  • the whole of the sub-channel is composed of 20 RBs
  • the first part used for the first resource is 10 RBs
  • the third part is 10 RBs.
  • the whole of the sub-channel is composed of 15 RBs
  • the first part used for the first resource is 10 RBs
  • the third part is 5 RBs. That means the third part is the remaining part not occupied by the first part in the same sub-channel.
  • the second part is empty, for example, the second part has no RB. That means the third part of the sub-channel would not be mapped with the first type or the second type of the two-stage SCI.
  • the processor 56 may disable to indicate the location of the second resource or the second part of the sub-channel in the first type of the two-stage SCI using the first resource.
  • the processor 76 may not need to detect or decode the second resource through the receiver 72.
  • FIG. 6 is a schematic diagram illustrating resource allocation according to an exemplary embodiment of the present disclosure.
  • the size of the sub-channel sc2 or sub-channel sc3 is 20 PRBs over the symbol S
  • the PSCCH I2 which may carries the first type of the two-stage SCI and/or the second type of the two-stage SCI I5 is merely mapped to 15 PRBs of the sub-channel sc2, which are the part P1 as the aforementioned first part.
  • the remaining PRBs of the sub-channel sc2, which are the part P2 as the aforementioned third part are not mapped with the PSSCH I3/I4.
  • the PSSCH I3/I4 is merely mapped to the sub-channel sc3 next to the sub-channel sc2.
  • the third part of the sub-channel would be mapped to the second resource used for the sidelink transmission.
  • the processor 56 may divide a third part of the sub-channel not overlapped with the first part of the sub-channel by the size of a resource block group.
  • the resource block group includes multiple consecutive RBs in time-frequency resource. For PSSCH transmission, it is supported up to 2 layer transmission.
  • a set of consecutive RBs can be bundled together and using the same pre-coder. This set of consecutive RBs can be called as a RB group (RBG) or a RB bundling, i.e., the resource block group.
  • the size of the resource block group may be modified based on the bandwidth or other practical configurations.
  • the size of the resource block group could be 1, 2, 3, or 5.
  • the processor 56 may determine the second resource according to the divided result of the third part of the sub-channel.
  • the divided result is related to the divisibility of the third part of the sub-channel relative to the size of the resource block group.
  • the divisibility is to determine whether the third part of the sub-channel is divisible by the size of the resource block group or whether the third part of the sub-channel is an integer multiple of the size of the resource block group.
  • the processor 56 may determine the divided result is the third part of the sub-channel is divisible by the size of the resource block group, and further determine the second part of the sub-channel mapped to the second resource equals to the third part of the sub-channel. That means the whole of the third part of the sub-channel is mapped to the second resource.
  • FIG. 7 is a schematic diagram illustrating resource allocation according to an exemplary embodiment of the present disclosure.
  • the remaining PRBs which are the part P2 as the aforementioned third part, can be divided by RBG size 5.
  • the difference with the FIG. 6 is that, in this case of FIG. 7, the remaining PRBs of the sub-channel sc2 are all mapped with the PSSCH I3/I4.
  • the remaining 10 PRBs within the sub-channel sc3 can be mapped with PSSCH I3/I4.
  • the processor 56 may determine the divided result is the third part of the sub-channel is not divisible by the size of the resource block group and the third part of the sub-channel is larger than the size of the resource block group, and further determine the second part of the sub-channel mapped to the second resource equals to an integer multiple of the size of the resource block group.
  • A is the number of RBs per sub-channel
  • B is the number of RBs used for PSCCH I2 which may carries the first type of the two-stage SCI and/or the second type of the two-stage SCI I5
  • N is the size of the resource block group.
  • A, B, and N are positive integers.
  • M*N RBs can be mapped with the PSSCH I2 or the second type of the two-stage SCI I5, A-B-M*N RBs is less than N.
  • M is a positive integer.
  • the processor 56 may disable the second resource occupies the whole of the third part of the sub-channel. That means the remaining A-B-M*N RBs are not mapped with PSSCH I3/I4. In other words, the remaining part not occupied the second part in the third part of the sub-channel would not be used for the transmission with the UE 70.
  • FIG. 8 is a schematic diagram illustrating resource allocation according to an exemplary embodiment of the present disclosure.
  • the size of the sub-channel sc2 i.e., A
  • the PSCCH I2 which may carries the first type of the two-stage SCI and/or the second type of the two-stage SCI I5
  • the PSCCH I2 which may carries the first type of the two-stage SCI and/or the second type of the two-stage SCI I5
  • the number of the remaining PRBS, which are the part P4 as the aforementioned third part is 8.
  • the RBG size or RB bundling size is 5 PRBs (i.e., N is 5) , then in this case, 5 PRBs of the sub-channel sc2, which are the part P5 as the aforementioned second part, are mapped with the PSSCH I3/I4. Furthermore, the remaining 3 PRBs, which are the part P6, are not mapped with the PSSCH I3/I4.
  • PSSCH mapped in consecutive PRBs in frequency domain may improve channel estimation performance.
  • the processor 56 may determine the divided result is the third part of the sub-channel is not divisible by the size of the resource block group and the third part of the sub-channel is larger than the size of the resource block group, and further determine the second resource occupies the whole of the third part of the sub-channel. There would be a four part of the sub-channel mapped to the second resource, and the four part equals to another size of another resource block group. The four part of the sub-channel is a remaining part not occupied by the second part in the third part of the sub-channel. Different from the embodiment of FIG. 8, the four part of the sub-channel is also mapped to the second resource. That means all remaining part not occupied by the first part in the same sub-channel would be mapped to the second resource.
  • the resource block groups used in this sub-channel.
  • the first M*N RBs have the same size of the resource block group N
  • the remianing A-B-M*N RBs have a different size of the resource block group
  • FIG. 9 is a schematic diagram illustrating resource allocation according to an exemplary embodiment of the present disclosure.
  • the size of the sub-channel of the sub-channel sc2 i.e., A
  • the PSCCH I2 which may carries the first type of the two-stage SCI and/or the second type of the two-stage SCI I5
  • the PSCCH I2 which may carries the first type of the two-stage SCI and/or the second type of the two-stage SCI I5
  • the PSCCH I2 which may carries the first type of the two-stage SCI and/or the second type of the two-stage SCI I5
  • the sub-channel sc2 which are the part P3 as the aforementioned first part (i.e., B is 12) .
  • the RBG size or RB bundling size is 5 PRBs (i.e., N is 5)
  • 5 PRBs of the sub-channel sc2, which are the part P5 as the aforementioned second part are mapped with the PSSCH I3/I4 with the same RBG size of 5 PRBs.
  • the remianing 3 PRBs, which are the part P6 as the aforementioned four part are also mapped with the PSSCH I3/I4, but with a different RBG size of 3 PRBs.
  • FIG. 10 is a schematic diagram illustrating resource allocation according to an exemplary embodiment of the present disclosure.
  • the difference with FIG. 9 is that, the part P8, as the aforementioned second part, with the RBG size of 5 PRBs is located at a different position relative to the part P5.
  • the part P7, as the aforementioned four part, with a different RBG size of 3 PRBs is located at a different position relative to the part P6.
  • the processor 56 may determine the divided result is the third part of the sub-channel is not divisible by the size of the resource block group and the third part of the sub-channel is less than the size of the resource block group, and further disable the second resource occupies the third part of the sub-channel.
  • the processor 56 may determine the divided result is the third part of the sub-channel is not divisible by the size of the resource block group and the third part of the sub-channel is less than the size of the resource block group, and further disable the second resource occupies the third part of the sub-channel. Taking FIG. 6 as an example, if the PSCCH I2 is mapped to 15 PRBs of the sub-channel sc2, and the RBG size is 10 PRBs. Then, the remaining PRBs, which are the part P2 as the aforementioned third part and less than the RBG size, within the sub-channel sc2 would not be mapped with the PSSCH I3/I4.
  • the disclosure further provides a non-transitory computer-readable recording medium (e.g., a storage medium such as a hard disk, a compact disk, a flash memory, or a solid state disk (SSD) ) .
  • the computer-readable recording medium is capable of storing a plurality of program code segments (e.g., code segments of determining part of sub-channel, code segments of dividing sub-channel, etc. ) . After the SSD code segments are loaded onto the processor 56 or 76 of the UE 50 or 70 and executed, all the steps of the above resource allocation method can be completed.
  • the user equipment includes a hardware structure and/or a software module corresponding to each function.
  • the disclosure can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed by hardware or computer software driven hardware depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.
  • the embodiments of the disclosure may divide the functional module of the user equipment according to the above method example, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module.
  • the above integrated module may be implemented in the form of hardware or software functional module. It should be noted that the division of the modules in the embodiments of the disclosure is schematic, and is only a division of logical functions. In actual implementation, there may be another division manner.
  • FIG. 11 is a block diagram of a resource allocating apparatus 90 according to an exemplary embodiment of the present disclosure.
  • the resource allocating apparatus 90 which is applied to the user equipment 50 or 70 shown in FIGs. 2A and 2B, includes a first resource allocating module 91 and a second resource allocating module 92.
  • the first resource allocating module 91 is configured to determine a first resource for PSCCH on a symbol within a sub-channel.
  • the symbol is a radio resource in the time domain
  • the sub-channel is a radio resource in the frequency domain
  • the first resource occupies a first part of the sub-channel
  • the first part of the sub-channel is less than a whole of the sub-channel
  • the PSCCH is related to a radio resource conveying traffic data over a sidelink.
  • the second resource allocating module 92 is configured to determine a second resource to be used for transmission on the symbol within the sub-channel.
  • the second resource occupies a second part of the sub-channel not overlapped with the first part of the sub-channel, and the sum of the first part and second part of the sub-channels is less than or equals to the whole of the sub-channel.
  • the second resource allocating module 92 is further configured to divide a third part of the sub-channel not overlapped with the first part of the sub-channel by a size of a resource block group and determine the second resource according to a divided result of the third part of the sub-channel.
  • the sum of the first part and third part of the sub-channels is the whole of the sub-channel, and the resource block group comprises a plurality of consecutive resource blocks in time-frequency resource.
  • the divided result is related to the divisibility of the third part of the sub-channel relative to the size of the resource block group.
  • the second resource allocating module 92 is further configured to determine the divided result is the third part of the sub-channel is divisible by the size of the resource block group and determine the second part of the sub-channel mapped to the second resource equals to the third part of the sub-channel.
  • the second resource allocating module 92 is further configured to determine the divided result is the third part of the sub-channel is not divisible by the size of the resource block group and the third part of the sub-channel is larger than the size of the resource block group, and determine the second part of the sub-channel mapped to the second resource equals to an integer multiple of the size of the resource block group.
  • the second resource allocating module 92 is further configured to determine the second resource occupies a whole of the third part of the sub-channel.
  • a four part of the sub-channel mapped to the second resource equals to another size of another resource block group, and the four part of the sub-channel is a remaining part not occupied by the second part of the sub-channel in the third part of the sub-channel.
  • the second resource allocating module 92 is further configured to disable the second resource occupies a whole of the third part of the sub-channel.
  • the second resource allocating module 92 is further configured to determine the divided result is the third part of the sub-channel is not divisible by the size of the resource block group and the third part of the sub-channel is less than the size of the resource block group, and disable the second resource occupies the third part of the sub-channel.
  • the second resource allocating module 92 is further configured to disable the second resource occupies a third part of the sub-channel not overlapped with the first part of the sub-channel.
  • the sum of the first part and third part of the sub-channels is the whole of the sub-channel.
  • a two-stage SCI comprises a first type and a second type
  • the first type of the two-stage SCI indicates the radio resource conveying the traffic data and the second type of the two-stage SCI
  • the second type of the two-stage SCI is related to decoding of the traffic data
  • the first type of the two-stage SCI is transmitted over the PSCCH
  • the second resource is used for the traffic data or the second type of the two-stage SCI over PSSCH.
  • a two-stage SCI comprises a first type and a second type
  • the first type of the two-stage SCI indicates the radio resource conveying the traffic data and the second type of the two-stage SCI
  • the second type of the two-stage SCI is related to decoding of the traffic data
  • the second type of the two-stage SCI is transmitted over the PSCCH
  • the second resource is used for the traffic data.
  • module used herein should be understood as the widest possible meaning.
  • the object used to implement the functions described by each “module” can be, for example, an integrated circuit ASIC, a single circuit, or a chip, used to execute one or more software or firmware.
  • the first resource allocating module 91 and the second resource allocating module 92 may be a control circuit, a chip, or a processor.
  • An embodiment of the disclosure further provides a computer storage medium, wherein the computer storage medium stores a computer program for electronic data exchange, and the computer program causes a computer to execute any one of the resource allocation methods described in the foregoing method embodiments.
  • An embodiment of the disclosure further provides a chip, wherein the chip executes program code to perform any one of the resource allocation methods described in the foregoing method embodiments.
  • An embodiment of the disclosure further provides a computer program, wherein the computer program is operable with a processor to execute any one of the resource allocation methods described in the foregoing method embodiments.
  • An embodiment of the disclosure further provides a computer program product, the computer program product includes a non-transitory computer-readable medium storing a computer program, and the computer program is operable with a processor to cause a computer to perform the operations described in the foregoing method embodiments.
  • the disclosed device may be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the module is only a logical function division.
  • multiple module s or components may be combined or may Integration into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or modules, and may be electrical or other forms.
  • the modules described as separate components may or may not be physically separated, and the components displayed as modules may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the objective of the solution of this embodiment.
  • each functional module in each embodiment of the disclosure may be integrated into one processing module, or each of the modules may exist separately physically, or two or more modules may be integrated into one module.
  • the above integrated module may be implemented in the form of hardware or in the form of software program modules.
  • the integrated module When the integrated module is implemented in the form of a software program module and sold or used as an independent product, it may be stored in a computer-readable memory.
  • the technical solution of the disclosure essentially or part that contributes to the existing technology or all or part of the technical solution can be embodied in the form of a software product, which is stored in a memory, several instructions are included to enable a computer device (which may be a personal computer, a server, or a network device, etc. ) to perform all or part of the steps of the method described in the embodiments of the disclosure.
  • the foregoing memory includes: a flash disk, a read-only memory (ROM) , a random access memory (RAM) , a mobile hard disk, a magnetic disk, or an optical disk, and other media that can store program codes.
  • one sub-channel on the same symbol would be divided into multiple parts.
  • One part may be used for PSCCH.
  • Another part may be used for the data channel or a part of SCI.
  • the remaining part not occupied by the SCI would not be used for the sidelink transmission. Accordingly, a flexible resource allocation on the sub-channel is provided, so as to further improve the usage efficiency of radio resources.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé d'attribution de ressource et un produit associé. Le procédé d'attribution de ressource est conçu pour un UE communiquant avec un autre UE par liaison latérale. Dans le procédé, une première ressource d'un canal physique de commande de liaison latérale (PSCCH) sur un symbole dans un sous-canal est déterminée. La première ressource occupe une première partie du sous-canal, la première partie du sous-canal est inférieure à l'ensemble du sous-canal, et le PSCCH est associé à une ressource radio transportant des données de trafic sur la liaison latérale. Une seconde ressource devant servir à une transmission est déterminée. La seconde ressource occupe une seconde partie du sous-canal qui ne se chevauche avec la première partie, et la somme de la première partie et de la seconde partie des sous-canaux est inférieure ou égale à l'ensemble du sous-canal. Par conséquent, l'invention assure une attribution de ressource flexible sur un sous-canal.
PCT/CN2020/129702 2019-11-18 2020-11-18 Procédé d'attribution de ressource et produit associé Ceased WO2021098713A1 (fr)

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