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WO2019148506A1 - Équipement utilisateur et son procédé de communication sans fil - Google Patents

Équipement utilisateur et son procédé de communication sans fil Download PDF

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Publication number
WO2019148506A1
WO2019148506A1 PCT/CN2018/075324 CN2018075324W WO2019148506A1 WO 2019148506 A1 WO2019148506 A1 WO 2019148506A1 CN 2018075324 W CN2018075324 W CN 2018075324W WO 2019148506 A1 WO2019148506 A1 WO 2019148506A1
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WO
WIPO (PCT)
Prior art keywords
slot
stti
pool
user equipment
region
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2018/075324
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English (en)
Inventor
Huei-Ming Lin
Hai Tang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Oppo Mobile Telecommunications Corp Ltd
Original Assignee
Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Oppo Mobile Telecommunications Corp Ltd filed Critical Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority to PCT/CN2018/075324 priority Critical patent/WO2019148506A1/fr
Priority to CN201880081055.6A priority patent/CN111512684B/zh
Publication of WO2019148506A1 publication Critical patent/WO2019148506A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H04L5/0078—Timing of allocation
    • 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
    • H04L5/0037—Inter-user or inter-terminal allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • 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
    • 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
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/18—Interfaces between hierarchically similar devices between terminal devices

Definitions

  • the present disclosure relates to the field of communication systems, and more particularly, to a user equipment and a method of wireless communication of same.
  • L1 layer 1 (L1) transmission of data transport blocks (TBs) in downlink, uplink, and sidelink such as over both air (Uu) and PC5 interfaces is traditionally performed in unit of one subframe, and the subframe has a fixed length of 1ms being only a transmit time interval (TTI) supported in a 4th generation (4G) system. That is, regardless of size of data TBs, each TB is channel encoded, rate matched, resource element (RE) mapped, and transmitted over a 1ms subframe which is a TTI duration.
  • TTI transmit time interval
  • SA-WG1 work item Due to increasing needs for urgent transmission of data over a sidelink interface such as the PC5 interface to support public safety, road safety, and mission critical communications, data latency requirement for end-to-end communication becomes extremely short.
  • 3GPP 3rd generation partnership project
  • SA-WG1 work item has identified and detailed latency requirement for data transfer from end-to-end that can be as short as 10ms in vehicle platooning operation, for which this has to cover all UE signal processing time, inter-layer communication, L1 transmissions, and relays if data needs to go from one end of platoon to another end.
  • the 5G-NR system allows shorter transmission symbol length and enables the possibility of faster and shorter transmission of data packets in a radio frame and a slot.
  • sidelink data transmission TTI is still associated with one slot of 14 symbols in the 5G-NR system and re-transmissions of data TB are scattered from slot to slot, this again still does not ensure the stringent latency requirements of data exchange over NR-sidelink over PC5 interface can be fulfilled.
  • An object of the present disclosure is to propose a user equipment (UE) and a method of wireless communication of same for short transmit time interval (TTI) transmissions for new radio (NR) sidelink communication.
  • UE user equipment
  • TTI short transmit time interval
  • NR new radio
  • a user equipment for wireless communication includes a memory and a processor coupled to the memory.
  • the processor is configured to perform a communication over a sidelink interface to at least one second user equipment and transmit at least one data transport block using at least one sidelink resource of a sidelink resource pool to the second user equipment.
  • the sidelink resource pool includes a slot based transmission pool and a non-slot based transmission pool.
  • the non-slot based transmission pool in a slot includes a guard period (GP) /automatic gain control (AGC) region and a short transmission time interval (sTTI) region.
  • the sTTI region includes a sidelink data transmission split into at least two sTTI’s.
  • the slot based transmission pool is a dedicated pool and the non-slot based transmission pool is a separated pool.
  • the slot based transmission pool and the non-slot based transmission pool are frequency division multiplexed (FDM’ed) within the sidelink resource pool.
  • FDM frequency division multiplexed
  • the slot based transmission pool and the non-slot based transmission pool are time division multiplexed (TDM’ed) within the sidelink resource pool.
  • the GP/AGC region is located at a beginning of the slot.
  • the GP/AGC region ranges from one to two symbols length.
  • the at least two sTTI’s within the sTTI region in the slot have a same length and each of the at least two sTTI’s has 3, 4, or 6 symbols length.
  • each of the at least two sTTI’s includes a physical sidelink control channel (PSCCH) carrying sidelink control information (SCI) and a physical sidelink shared channel (PSSCH) carrying the data transport block, the PSCCH has one symbol length, and the PSSCH has 2, 3, or 5 symbols length.
  • PSCCH physical sidelink control channel
  • PSSCH physical sidelink shared channel
  • the SCI includes at least one of a length of the PSSCH in number of symbols, a new transmission or redundancy version number, a modulation and coding scheme (MCS) level, and a transport block size (TBS) .
  • MCS modulation and coding scheme
  • TBS transport block size
  • the new transmission or redundancy version number is represented by two bits to provide four indications including a new transmission and three redundancy versions.
  • the slot based transmission pool in the slot includes a second GP/AGC region aligning with the GP/AGC region, a second PSCCH, and a second PSSCH.
  • a number of the at least two sTTI’s within the slot is 2, 3, or 4.
  • a number of the at least two sTTI’s in the slot is different from a number of the at least two sTTI’s in a next slot.
  • a number of the at least two sTTI’s in the slot is the same as a number of the at least two sTTI’s in a next slot.
  • the slot based transmission pool in the slot corresponds a TTI, and a length of the TTI is greater than a length of the sTTI region.
  • a user equipment for wireless communication includes a memory and a processor coupled to the memory.
  • the processor is configured to perform a communication over a sidelink interface to at least one second user equipment, receive at least one data transport block using at least one sidelink resource of a sidelink resource pool from the second user equipment, and decode at least one data transport block using at least one sidelink resource of the sidelink resource pool.
  • the sidelink resource pool includes a slot based transmission pool and a non-slot based transmission pool.
  • the non-slot based transmission pool in a slot includes a guard period (GP) /automatic gain control (AGC) region and a short transmission time interval (sTTI) region.
  • the sTTI region includes a sidelink data transmission split into at least two sTTI’s.
  • the slot based transmission pool is a dedicated pool and the non-slot based transmission pool is a separated pool.
  • the slot based transmission pool and the non-slot based transmission pool are frequency division multiplexed (FDM’ed) within the sidelink resource pool.
  • FDM frequency division multiplexed
  • the slot based transmission pool and the non-slot based transmission pool are time division multiplexed (TDM’ed) within the sidelink resource pool.
  • the GP/AGC region is located at a beginning of the slot.
  • the GP/AGC region ranges from one to two symbols length.
  • the at least two sTTI’s within the sTTI region in the slot have a same length and each of the at least two sTTI’s has 3, 4, or 6 symbols length.
  • each of the at least two sTTI’s includes a physical sidelink control channel (PSCCH) carrying sidelink control information (SCI) and a physical sidelink shared channel (PSSCH) carrying the data transport block, the PSCCH has one symbol length, and the PSSCH has 2, 3, or 5 symbols length.
  • PSCCH physical sidelink control channel
  • PSSCH physical sidelink shared channel
  • the SCI includes at least one of a length of the PSSCH in number of symbols, a new transmission or redundancy version number, a modulation and coding scheme (MCS) level, and a transport block size (TBS) .
  • MCS modulation and coding scheme
  • TBS transport block size
  • the new transmission or redundancy version number is represented by two bits to provide four indications including a new transmission and three redundancy versions.
  • the slot based transmission pool in the slot includes a second GP/AGC region aligning with the GP/AGC region, a second PSCCH carrying a second SCI, and a second PSSCH.
  • the processor is further configured to perform at least one of a transmit/receive (Tx/Rx) switching and an input gain control adjustment using the at least one of the GP/AGC region and the second GP/AGC region.
  • Tx/Rx transmit/receive
  • the processor is further configured to perform the transmit/receive (Tx/Rx) switching and the input gain control adjustment at the same time for the GP/AGC region and the second GP/AGC region.
  • the processor is further configured to decode the second PSCCH with a fixed length of symbols and extract the second SCI including scheduling information of the second PSSCH.
  • the processor is further configured to decode the PSCCH with a fixed length of symbols and extract the SCI including scheduling information of the PSSCH.
  • a number of the at least two sTTI’s within the slot is 2, 3, or 4.
  • a number of the at least two sTTI’s in the slot is different from a number of the at least two sTTI’s in a next slot.
  • a number of the at least two sTTI’s in the slot is the same as a number of the at least two sTTI’s in a next slot.
  • the slot based transmission pool in the slot corresponds a TTI, and a length of the TTI is greater than a length of the sTTI region.
  • a method of wireless communication of a user equipment includes performing a communication over a sidelink interface to at least one second user equipment and transmitting at least one data transport block using at least one sidelink resource of a sidelink resource pool to the second user equipment.
  • the sidelink resource pool includes a slot based transmission pool and a non-slot based transmission pool.
  • the non-slot based transmission pool in a slot includes a guard period (GP) /automatic gain control (AGC) region and a short transmission time interval (sTTI) region.
  • the sTTI region includes a sidelink data transmission split into at least two sTTI’s.
  • the slot based transmission pool is a dedicated pool and the non-slot based transmission pool is a separated pool.
  • the slot based transmission pool and the non-slot based transmission pool are frequency division multiplexed (FDM’ed) within the sidelink resource pool.
  • FDM frequency division multiplexed
  • the slot based transmission pool and the non-slot based transmission pool are time division multiplexed (TDM’ed) within the sidelink resource pool.
  • the GP/AGC region is located at a beginning of the slot.
  • the GP/AGC region ranges from one to two symbols length.
  • the at least two sTTI’s within the sTTI region in the slot have a same length and each of the at least two sTTI’s has 3, 4, or 6 symbols length.
  • each of the at least two sTTI’s includes a physical sidelink control channel (PSCCH) carrying sidelink control information (SCI) and a physical sidelink shared channel (PSSCH) carrying the data transport block, the PSCCH has one symbol length, and the PSSCH has 2, 3, or 5 symbols length.
  • PSCCH physical sidelink control channel
  • PSSCH physical sidelink shared channel
  • the SCI includes at least one of a length of the PSSCH in number of symbols, a new transmission or redundancy version number, a modulation and coding scheme (MCS) level, and a transport block size (TBS) .
  • MCS modulation and coding scheme
  • TBS transport block size
  • the new transmission or redundancy version number is represented by two bits to provide four indications including a new transmission and three redundancy versions.
  • the slot based transmission pool in the slot includes a second GP/AGC region aligning with the GP/AGC region, a second PSCCH, and a second PSSCH.
  • a number of the at least two sTTI’s within the slot is 2, 3, or 4.
  • a number of the at least two sTTI’s in the slot is different from a number of the at least two sTTI’s in a next slot.
  • a number of the at least two sTTI’s in the slot is the same as a number of the at least two sTTI’s in a next slot.
  • the slot based transmission pool in the slot corresponds a TTI, and a length of the TTI is greater than a length of the sTTI region.
  • a method of wireless communication of a user equipment includes performing a communication over a sidelink interface to at least one second user equipment, receiving at least one data transport block using at least one sidelink resource of a sidelink resource pool from the second user equipment, and decoding the at least one data transport block using the at least one sidelink resource of the sidelink resource pool.
  • the sidelink resource pool includes a slot based transmission pool and a non-slot based transmission pool.
  • the non-slot based transmission pool in a slot includes a guard period (GP) /automatic gain control (AGC) region and a short transmission time interval (sTTI) region.
  • the sTTI region includes a sidelink data transmission split into at least two sTTI’s.
  • the slot based transmission pool is a dedicated pool and the non-slot based transmission pool is a separated pool.
  • the slot based transmission pool and the non-slot based transmission pool are frequency division multiplexed (FDM’ed) within the sidelink resource pool.
  • FDM frequency division multiplexed
  • the slot based transmission pool and the non-slot based transmission pool are time division multiplexed (TDM’ed) within the sidelink resource pool.
  • the GP/AGC region is located at a beginning of the slot.
  • the GP/AGC region ranges from one to two symbols length.
  • the at least two sTTI’s within the sTTI region in the slot have a same length and each of the at least two sTTI’s has 3, 4, or 6 symbols length.
  • each of the at least two sTTI’s includes a physical sidelink control channel (PSCCH) carrying sidelink control information (SCI) and a physical sidelink shared channel (PSSCH) carrying the data transport block, the PSCCH has one symbol length, and the PSSCH has 2, 3, or 5 symbols length.
  • PSCCH physical sidelink control channel
  • PSSCH physical sidelink shared channel
  • the SCI includes at least one of a length of the PSSCH in number of symbols, a new transmission or redundancy version number, a modulation and coding scheme (MCS) level, and a transport block size (TBS) .
  • MCS modulation and coding scheme
  • TBS transport block size
  • the new transmission or redundancy version number is represented by two bits to provide four indications including a new transmission and three redundancy versions.
  • the slot based transmission pool in the slot includes a second GP/AGC region aligning with the GP/AGC region, a second PSCCH carrying a second SCI, and a second PSSCH.
  • the method further includes performing at least one of a transmit/receive (Tx/Rx) switching and an input gain control adjustment using the at least one of the GP/AGC region and the second GP/AGC region.
  • Tx/Rx transmit/receive
  • the method further includes performing the transmit/receive (Tx/Rx) switching and the input gain control adjustment at the same time for the GP/AGC region and the second GP/AGC region.
  • the method further includes decoding the second PSCCH with a fixed length of symbols and extracting the second SCI including scheduling information of the second PSSCH.
  • the method further includes decoding the PSCCH with a fixed length of symbols and extracting the SCI including scheduling information of the PSSCH.
  • a number of the at least two sTTI’s within the slot is 2, 3, or 4.
  • a number of the at least two sTTI’s in the slot is different from a number of the at least two sTTI’s in a next slot.
  • a number of the at least two sTTI’s in the slot is the same as a number of the at least two sTTI’s in a next slot.
  • the slot based transmission pool in the slot corresponds a TTI, and a length of the TTI is greater than a length of the sTTI region.
  • the user equipment and the method of wireless communication of same are capable of providing fast and reliable data transmission for NR-sidelink communication utilizing short TTI structure and data repetition and/or perform easy co-existence and harmonized operation with normal TTI transmissions in same radio resource pool.
  • FIG. 1 is a block diagram of a user equipment for wireless communication according to an embodiment of the present disclosure.
  • FIG. 2 is a diagram of a structure of a sidelink resource pool according to an embodiment of the present disclosure.
  • FIG. 3 is a diagram of a block of transmission time interval (TTI) in a non-slot based transmission pool according to an embodiment of the present disclosure.
  • TTI transmission time interval
  • FIG. 4 is a diagram of a block of TTI in a non-slot based transmission pool according to an embodiment of the present disclosure.
  • FIG. 5 is a diagram of a block of TTI in a non-slot based transmission pool according to an embodiment of the present disclosure.
  • FIG. 6 is a scenario of vehicle-to-everything (V2X) communication according to an embodiment of the present disclosure.
  • V2X vehicle-to-everything
  • FIG. 7 is a flowchart illustrating a method of wireless communication according to the present disclosure, from an aspect of operation of a user equipment for transmitting signals.
  • FIG. 8 is a flowchart illustrating a method of wireless communication according to the present disclosure, from an aspect of operation of a user equipment for receiving signals.
  • FIG. 1 and FIG. 2 illustrate that, in some embodiments, at least one user equipment (UE) 100 for wireless communication includes a memory 102 and a processor 104 coupled to the memory 102.
  • the processor 104 is configured to perform a communication over a sidelink interface such as a PC5 interface to at least one user equipment 200 and transmit at least one data transport block using at least one sidelink resource of a sidelink resource pool 300 to the at least one second user equipment 200.
  • the sidelink resource pool 300 includes a slot based transmission pool 310 and a non-slot based transmission pool 320.
  • the non-slot based transmission pool 320 in a slot includes a guard period (GP) /automatic gain control (AGC) region 321 and a short transmission time interval (sTTI) region 322.
  • GP guard period
  • AGC automatic gain control
  • sTTI short transmission time interval
  • the sTTI region 322 includes a sidelink data transmission split into at least two sTTI’s, such that the at least one user equipment 100 could provide fast and reliable data transmission for new radio (NR) sidelink communication utilizing short TTI structure such as the sTTI region 322.
  • the user equipment 100 may be a user equipment for transmitting signals and the user equipment 200 may be a user equipment for receiving signals.
  • the communication between the user equipment 100 and the user equipment 200 over the sidelink interface such as the PC5 interface could be based on based on long term evolution (LTE) sidelink technology developed under 3rd generation partnership project (3GPP) and/or 5th generation new radio (5G-NR) radio access technology.
  • LTE long term evolution
  • 3GPP 3rd generation partnership project
  • 5G-NR 5th generation new radio
  • FIG. 1 and FIG. 2 further illustrate that, in some embodiments, the at least one user equipment 200 for wireless communication includes a memory 202 and a processor 204 coupled to the memory 202.
  • the processor 204 is configured to perform a communication over a sidelink interface such as a PC5 interface to the at least one user equipment 100, receive the at least one data transport block using the at least one sidelink resource of the sidelink resource pool 300 from the at least one user equipment 100, and decode the at least one data transport block using the at least one sidelink resource of the sidelink resource pool 300.
  • a sidelink interface such as a PC5 interface
  • the memories 102 and 202 each may include read-only memory (ROM) , random access memory (RAM) , flash memory, memory card, storage medium and/or other storage device.
  • the processors 104 and 204 each may include application-specific integrated circuit (ASIC) , other chipset, logic circuit and/or data processing device.
  • the processors 104 and 204 each may also include baseband circuitry to process radio frequency signals.
  • the techniques described herein can be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described herein.
  • the modules can be stored in memories 102 and 202 and executed by processors 104 and 204.
  • the memories 102 and 202 can be implemented within the processors 104 and 204 or external to the processors 104 and 204 in which case those can be communicatively coupled to the processors 104 and 204 via various means as is known in the art.
  • FIG. 1 and FIG. 2 illustrate that, in some embodiments, in some embodiments, the slot based transmission pool 310 is a dedicated pool and the non-slot based transmission pool 320 is a separated pool.
  • the slot based transmission pool 310 and the non-slot based transmission pool 320 are frequency division multiplexed (FDM’ed) within the sidelink resource pool 300
  • the slot based transmission pool 310 and the non-slot based transmission pool 320 are time division multiplexed (TDM’ed) within the sidelink resource pool 300.
  • FIG. 2 further illustrates that, in some embodiments, the GP/AGC region 321 is located at a beginning of the slot.
  • the GP/AGC region 321 ranges from one to two symbols length.
  • the at least two sTTI’s within the same slot could be repetition/re-transmissions of same data TB or different data TB, and also with possibly different channel encoding redundancy version.
  • the sTTI region 322 in each block of transmission could contain different number of sTTI’s and the sTTI region 322 may be decided by the user equipment 100 based on data TB size, reliability requirement, and etc. Some examples are illustrated in FIG. 3, FIG. 4, and FIG. 5.
  • FIG. 3 illustrates that, in some embodiments, in the non-slot based transmission pool 320, the sTTI region 322 in a block of TTI 330 includes four sTTI’s of equal length 331.
  • the sTTI’s transmissions could be used for initial plus repetition/re-transmission of same sidelink data TB or different data TB. For example, first two sTTI’s are used for transmitting data TB and following two sTTI’s are used for a next data TB due to urgency of data delivery and limited available resources within the sidelink resource pool 300.
  • Each sTTI includes two physical channels such as PSCCH and PSSCH.
  • the physical channels may be time domain multiplexed (TDM’ed) .
  • the PSCCH may be as short as one symbol and the PSSCH may be of length 2 symbols.
  • FIG. 4 illustrates that, in some embodiments, in the non-slot based transmission pool 320, the sTTI region 322 in a block of TTI 340 includes three sTTI’s of equal length 341.
  • the sTTI’s transmissions could be used for initial plus repetition/re-transmission of same sidelink data TB or different data TB. For example, first two sTTI’s are used for transmitting data TB and following one sTTI’s is used for a next data TB due to high urgency and less stringent reliability requirement on the next data TB.
  • Each sTTI includes two physical channels such as PSCCH and PSSCH.
  • the physical channels may be time domain multiplexed (TDM’ed) .
  • the PSCCH may be as short as one symbol and the PSSCH may be of length 3 symbols.
  • FIG. 5 illustrates that, in some embodiments, in the non-slot based transmission pool 320, the sTTI region 322 in a block of TTI 350 includes four sTTI’s of equal length 351.
  • the sTTI’s transmissions could be used for initial plus repetition/re-transmission of same sidelink data TB or different data TB.
  • both sTTI’s are used for transmitting same sidelink data TB with first sTTI carrying redundancy version 0 and second sTTI carrying redundancy version 1 for chase combining at the user equipment 200.
  • Each sTTI includes two physical channels such as PSCCH and PSSCH.
  • the physical channels may be time domain multiplexed (TDM’ed) .
  • the PSCCH may be as short as one symbol and the PSSCH may be of length 5 symbols.
  • FIG. 2 to 4 illustrate that, in some embodiment, the at least two sTTI’s within the sTTI region 322 in the slot have a same length and each of the at least two sTTI’s has 3, 4, or 6 symbols length.
  • a number of the at least two sTTI’s within the slot is 2, 3, or 4.
  • a number of the at least two sTTI’s in the slot can be different from a number of the at least two sTTI’s in a next slot.
  • a number of the at least two sTTI’s in the slot can be the same as a number of the at least two sTTI’s in a next slot.
  • Each of the at least two sTTI’s includes a physical sidelink control channel (PSCCH) carrying sidelink control information (SCI) and a physical sidelink shared channel (PSSCH) carrying a data transport block, the PSCCH has one symbol length, and the PSSCH has 2, 3, or 5 symbols length.
  • the SCI includes at least one of a length of the PSSCH in number of symbols, a new transmission or redundancy version number, a modulation and coding scheme (MCS) level, and a transport block size (TBS) .
  • the new transmission or redundancy version number is represented by two bits to provide four indications including a new transmission and three redundancy versions. For example, two bits 00 is for new transmission, two bits 01 is for redundancy version 0, two bits 10 is for redundancy version 1, and two bits 11 is for redundancy version 2.
  • each block of transmission time interval (TTI) 311 such as normal TTI has a length of one slot.
  • the slot based transmission pool 310 in the slot includes a second GP/AGC region 312 aligning with the GP/AGC region 321, a second PSCCH 313, and a second PSSCH 314.
  • the slot based transmission pool 310 in the slot corresponds a TTI, and a length of the TTI is greater than a length of the sTTI region 322.
  • the second GP/AGC region 312 may be one to two symbols length.
  • the second PSCCH 313 is a control region and carries sidelink control information (SCI) for scheduling data TB in a subsequent second PSSCH 314.
  • the second PSSCH 314 is a data region and carries a corresponding data TB.
  • FIG. 1 and FIG. 2 further illustrate that, in some embodiments, the processor 204 is further configured to perform at least one of a transmit/receive (Tx/Rx) switching and an input gain control adjustment using the at least one of the GP/AGC region 321 and the second GP/AGC region 312.
  • the processor 204 is configured to perform the transmit/receive (Tx/Rx) switching and the input gain control adjustment at the same time for the GP/AGC region 321 and the second GP/AGC region 312.
  • the processor 204 is further configured to decode the second PSCCH 313 with a fixed length of symbols and extract the second SCI including scheduling information of the second PSSCH 314.
  • the processor 204 is further configured to decode the PSCCH of the sTTI region 322 with a fixed length of symbols such as one symbol transmitted in first sTTI and extract the SCI including scheduling information of the PSSCH of the sTTI region 322 for current/first sTTI (e.g. length of 2 symbols, and MCS level) and/or additional information for remaining sTTI within the same slot (e.g. number of sTTI’s, new transmission, and redundancy versions) .
  • a fixed length of symbols such as one symbol transmitted in first sTTI
  • SCI including scheduling information of the PSSCH of the sTTI region 322 for current/first sTTI (e.g. length of 2 symbols, and MCS level) and/or additional information for remaining sTTI within the same slot (e.g. number of sTTI’s, new transmission, and redundancy versions) .
  • FIG. 6 illustrates that, in some embodiments, the communication between the user equipment 100 and the user equipment 200 relates to vehicle-to-everything (V2X) communication including vehicle-to-vehicle (V2V) , vehicle-to-pedestrian (V2P) , and vehicle-to-infrastructure/network (V2I/N) according to LTE sidelink technology developed under 3rd generation partnership project (3GPP) in Release 14 and/or 5G-NR radio access technology.
  • 3GPP 3rd generation partnership project
  • 5G-NR radio access technology 3rd generation partnership project
  • FIG. 7 illustrates a method 400 of wireless communication according to the present disclosure, from an aspect of operation of the user equipment 100 for transmitting signals.
  • the method 400 includes: at block 402, performing a communication over a sidelink interface to the user equipment 200, and at block 404, transmitting at least one data transport block using at least one sidelink resource of the sidelink resource pool 300 to the user equipment 200.
  • the sidelink resource pool 300 includes the slot based transmission pool 310 and the non-slot based transmission pool 320.
  • the non-slot based transmission pool 320 in a slot includes the guard period (GP) /automatic gain control (AGC) region 321 and the short transmission time interval (sTTI) region 322.
  • GP guard period
  • AGC automatic gain control
  • sTTI short transmission time interval
  • the sTTI region 322 includes the sidelink data transmission split into at least two sTTI’s, such that the user equipment 100 could provide fast and reliable data transmission for new radio (NR) sidelink communication utilizing short TTI structure such as the sTTI region 322.
  • NR new radio
  • FIG. 8 illustrates a method 500 of wireless communication according to the present disclosure, from an aspect of operation of the user equipment 100 for receiving signals.
  • the method 500 includes: at block 502, performing a communication over a sidelink interface to at least one user equipment 100, at block 504, receiving at least one data transport block using at least one sidelink resource of a sidelink resource pool from the user equipment 100, and at block 506, decoding at least one data transport block using at least one sidelink resource of the sidelink resource pool 300.
  • the method 500 further includes performing at least one of a transmit/receive (Tx/Rx) switching and an input gain control adjustment, such as at the same time, using the at least one of the GP/AGC region 321 and the second GP/AGC region 312.
  • the method 500 further includes decoding the second PSCCH 313 with a fixed length of symbols and extracting the second SCI including scheduling information of the PSSCH and/or the second PSSCH 314.
  • the user equipment and the method of wireless communication of same are capable of providing fast and reliable data transmission for NR-sidelink communication utilizing short TTI structure and data repetition and/or perform easy co-existence and harmonized operation with normal TTI transmissions in same radio resource pool.
  • the units as separating components for explanation are or are not physically separated.
  • the units for display are or are not physical units, that is, located in one place or distributed on a plurality of network units. Some or all of the units are used according to the purposes of the embodiments.
  • each of the functional units in each of the embodiments can be integrated in one processing unit, physically independent, or integrated in one processing unit with two or more than two units.
  • the software function unit is realized and used and sold as a product, it can be stored in a readable storage medium in a computer.
  • the technical plan proposed by the present disclosure can be essentially or partially realized as the form of a software product.
  • one part of the technical plan beneficial to the conventional technology can be realized as the form of a software product.
  • the software product in the computer is stored in a storage medium, including a plurality of commands for a computational device (such as a personal computer, a server, or a network device) to run all or some of the steps disclosed by the embodiments of the present disclosure.
  • the storage medium includes a USB disk, a mobile hard disk, a read-only memory (ROM) , a random access memory (RAM) , a floppy disk, or other kinds of media capable of storing program codes.

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

Abstract

La présente invention concerne un équipement utilisateur et son procédé de communication sans fil. L'équipement utilisateur comprend une mémoire et un processeur couplé à la mémoire. Le processeur est configuré pour effectuer une communication sur une interface de liaison latérale vers au moins un second équipement utilisateur, et pour transmettre au second équipement utilisateur au moins un bloc de transport de données à l'aide d'au moins une ressource de liaison latérale parmi un groupe de ressources de liaison latérale. Le groupe de ressources de liaison latérale comprend un groupe à transmission sur créneaux et un groupe à transmission sur mini-créneaux. Le groupe à transmission sur mini-créneaux dans un créneau comprend une région de période de garde (GP)/commande de gain automatique (AGC) et une région d'intervalle de temps de transmission court (sTTI). La région sTTI comprend une transmission de données en liaison latérale divisée sur au moins deux sTTI.
PCT/CN2018/075324 2018-02-05 2018-02-05 Équipement utilisateur et son procédé de communication sans fil Ceased WO2019148506A1 (fr)

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CN201880081055.6A CN111512684B (zh) 2018-02-05 2018-02-05 用户设备及其无线通信方法

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