CN-114245339-B - Transmission apparatus, method, and integrated circuit

CN114245339BCN 114245339 BCN114245339 BCN 114245339BCN-114245339-B

Abstract

The present invention relates to a transmitting device, a method and an integrated circuit for transmitting data to one or more receiving devices via a side link interface, wherein the transmission of data comprises a first transmission of data and one or more retransmissions of data subsequent to the first data transmission, the transmitting device comprising a processor performing a resource sensing procedure for selecting radio resources available to the transmitting device for transmitting data at a later point in time, the processor performing a primary radio resource allocation based on the result of the resource sensing procedure during the sensing window to select time-frequency radio resources within the transmission window to be used for performing the first transmission of data, and the processor determining a data transmission timing pattern among a plurality of data transmission timing patterns, each data transmission timing pattern indicating a transmission timing for performing one or more transmissions of data, the transmitting unit performing the first data transmission using the selected time-frequency radio resources and performing the one or more retransmissions of data relative to the first data transmission with a transmission timing defined by the determined data transmission timing pattern.

Inventors

P. Malik Basu
J. Lower
S.Feng

Assignees

松下电器（美国）知识产权公司

Dates

Publication Date: 20260512
Application Date: 20170731
Priority Date: 20160809

Claims (16)

1. A transmitting device for transmitting data to one or more receiving devices via a side link interface, wherein the transmission of the data includes a first data transmission and one or more data retransmissions subsequent to the first data transmission, the transmitting device comprising: A processor that: performing a resource sensing procedure for selecting radio resources available for the transmitting device to transmit data at a later point in time, Performing autonomous radio resource allocation to select time-frequency radio resources within a transmission window to be used for performing the first data transmission based on a result of the resource sensing procedure during the sensing window, and Determining a data transmission timing pattern among a plurality of data transmission timing patterns, each data transmission timing pattern indicating a transmission timing for performing one or more data transmissions, and A transmission unit that: the first data transmission is performed using the selected time-frequency radio resource, Determining a retransmission timing for performing the one or more data retransmissions based on the transmission timing indicated by the determined data transmission timing pattern and a time gap between the first data transmission and the one or more data retransmissions, and The one or more data retransmissions are performed with the retransmission timing, Wherein the time gap is configurable, independent of the determined data transmission timing pattern, and known to the one or more receiving devices, and Wherein the one or more data retransmissions are performed within a time span defined by the determined length of the data transmission timing pattern.
2. The transmission apparatus according to claim 1, wherein the plurality of data transmission timing patterns indicate different numbers of data transmissions, and the processor determines one of the data transmission timing patterns corresponding to a total number of transmissions to be performed on the data, wherein the total number of transmissions to be performed on the data is determined by the processor or is preconfigured, Wherein the data transmission timing pattern is determined by the processor randomly or based on information acquired by the resource sensing process during the sensing window.
3. The transmitting device according to claim 1 or 2, wherein the transmitting unit transmits a scheduling assignment indicating the selected time-frequency radio resources for the first data transmission and identifying the determined data transmission timing pattern.
4. The transmitting device of claim 1, wherein the determined data transmission timing pattern indicates only one data transmission, wherein the processor determines a data retransmission candidate for performing the one or more data retransmissions within the transmission window by repeating the determined data transmission timing pattern a plurality of times relative to the timing of the first data transmission within the transmission window and then by identifying a timing position given by the indicated one data transmission at each repeated data transmission timing pattern, and Wherein the processor determines which data retransmission candidates are to be used for performing the one or more data retransmissions based on a total number of transmissions to be performed on the data, the total number of data transmissions being determined by the processor or being pre-configured, Wherein the processor determines the data retransmission candidates to be used for the data retransmission based on information acquired by the resource sensing procedure during the sensing window.
5. The transmitting device of claim 3, wherein the one or more data retransmissions are performed using the same frequency radio resources as used for the first data transmission or using frequency radio resources determined by the processor from the frequency radio resources used for the first data transmission based on a frequency hopping pattern, Wherein the processor determines whether the one or more data retransmissions use the same frequency radio resources as the first data transmission or use frequency radio resources following the frequency hopping pattern based on information acquired by the resource sensing procedure during the sensing window, Wherein the scheduling assignment further indicates whether the transmitting device uses a frequency hopping pattern to determine frequency radio resources for transmitting the one or more data retransmissions.
6. The transmitting device of claim 1, wherein the determined data transmission timing pattern indicates only one transmission, wherein the processor determines a preferred transmission timing for one of the one or more data retransmissions based on information acquired by the resource sensing procedure during the sensing window after the first data transmission timing, and wherein the processor determines the data transmission timing pattern such that when the data transmission timing pattern is repeated multiple times relative to the timing of the first data transmission within the transmission window, the indicated one data transmission of the data transmission timing pattern coincides with the determined preferred transmission timing, Wherein data retransmission candidates for performing one or more of the data retransmissions are defined within the transmission window by repeating the data transmission timing pattern and subsequently identifying a timing position given by the indicated one data transmission at each repeated data transmission timing pattern, and The processor determines which data retransmission candidates are to be used for performing the remaining data retransmissions, based on the information acquired by the resource sensing procedure during the sensing window and depending on the total number of transmissions to be performed on the data, which is determined by the processor or is preconfigured, Wherein the transmitting unit transmits one data retransmission at the determined preferred transmission timing, and transmits the remaining data retransmission at the retransmission candidate to be used.
7. The transmission apparatus according to claim 6, wherein a scheduling assignment transmitted by the transmission unit indicates a frequency radio resource for the data retransmission at the preferred transmission timing as an offset with respect to the frequency radio resource for the first data transmission, and Wherein the remaining data retransmission is performed using the same frequency radio resources as used for the first data transmission or the same frequency radio resources as used for the data retransmission with the preferred transmission timing, or wherein the remaining data retransmission is performed using frequency radio resources determined by the processor based on a frequency hopping pattern from the frequency radio resources used for the first data transmission or from the frequency radio resources used for the data retransmission with the preferred transmission timing, and wherein the scheduling assignment further indicates whether the sending device uses a frequency hopping pattern to determine the frequency radio resources used for transmitting the one or more data retransmissions.
8. The transmitting device according to one of claims 4 to 7, wherein the transmitting unit transmits a scheduling assignment indicating the selected time-frequency radio resources for the first data transmission and identifies the determined data transmission timing pattern, Wherein the scheduling assignment further indicates which of the plurality of repeated data transmission timing patterns defines the retransmission timing for performing the one or more data retransmissions, wherein the data transmission timing pattern indication is encoded as a bit map, wherein bits of the bit map are respectively associated with one of the plurality of repeated data transmission timing patterns.
9. The transmitting device of one of claims 1 to 2 and 4 to 7, wherein a pool of data resources comprises a plurality of time-frequency radio resources available for the transmitting device to perform data transmission, the pool of data resources being divided into time-frequency radio resources available for performing a first data transmission and into time-frequency radio resources available for performing a data retransmission, and Wherein the processor selects a time-frequency radio resource for performing a first data transmission among the time-frequency radio resources available for performing the first data transmission during the autonomous radio resource allocation, Wherein the plurality of time-frequency radio resources of the data resource pool are divided in a time domain between time-frequency radio resources for a first data transmission and time-frequency radio resources for a data retransmission, Wherein the partitioning of the pool of data resources is preconfigured or configured by a radio base station controlling the transmitting device.
10. A method for a transmitting device for transmitting data to one or more receiving devices via a side link interface, wherein the transmission of the data comprises a first data transmission and one or more data retransmissions subsequent to the first data transmission, the method comprising the steps performed by the transmitting device of: performing a resource sensing procedure for selecting radio resources available for the transmitting device to transmit data at a later point in time, Based on the result of the resource sensing procedure during the sensing window, performing an autonomous radio resource allocation to select time-frequency radio resources within a transmission window to be used for performing the first data transmission, Determining a data transmission timing pattern among a plurality of data transmission timing patterns, each data transmission timing pattern indicating a transmission timing for performing one or more data transmissions, The first data transmission is performed using the selected time-frequency radio resource, Determining a retransmission timing for performing the one or more data retransmissions based on the transmission timing indicated by the determined data transmission timing pattern and a time gap between the first data transmission and the one or more data retransmissions, and The one or more data retransmissions are performed with the retransmission timing, Wherein the time gap is configurable, independent of the determined data transmission timing pattern, and known to the one or more receiving devices, and Wherein the one or more data retransmissions are performed within a time span defined by the determined length of the data transmission timing pattern.
11. The method of claim 10, wherein the plurality of data transmission timing patterns indicate different numbers of data transmissions, and the method includes determining one of the data transmission timing patterns corresponding to a total number of transmissions to be performed on the data, wherein the total number of transmissions to be performed on the data is determined by the transmitting device or is preconfigured, Wherein the data transmission timing pattern is determined by the transmitting device randomly or based on information acquired by the resource sensing procedure during the sensing window.
12. The method of claim 10, wherein the determined data transmission timing pattern indicates only one data transmission, and the method comprises the steps of: Determining a data retransmission candidate for performing the one or more data retransmissions within the transmission window by repeating the determined data transmission timing pattern a plurality of times relative to the timing of the first data transmission within the transmission window and subsequently identifying a timing position given by the indicated one data transmission at each repeated data transmission timing pattern, and Determining which data retransmission candidates are to be used for performing the one or more data retransmissions based on a total number of transmissions to be performed on the data, the total number of data transmissions being determined by the transmitting device or being preconfigured, Wherein the method comprises the step of determining the data retransmission candidates to be used for the data retransmission based on information acquired by the resource sensing procedure during the sensing window.
13. The method of claim 10, wherein the determined data transmission timing pattern indicates only one transmission, wherein the method comprises the steps of: Determining a preferred transmission timing for one of the one or more data retransmissions based on information acquired by the resource sensing procedure during the sensing window after the first data transmission timing, and Determining the data transmission timing pattern such that when the data transmission timing pattern is repeated a plurality of times with respect to the timing of the first data transmission within the transmission window, the indicated one data transmission of the data transmission timing pattern coincides with the determined preferred transmission timing, Wherein data retransmission candidates for performing one or more of said data retransmissions are defined within said transmission window by repeating said data transmission timing pattern and subsequently by identifying a timing position given by an indicated one of the data transmissions at each of the repeated data transmission timing patterns, Determining which data retransmission candidates are to be used for performing remaining data retransmissions based on the information acquired by the resource sensing procedure during the sensing window and depending on a total number of transmissions to be performed on the data, the total number of data transmissions being determined by the transmitting device or being preconfigured, and One data retransmission is transmitted at the determined preferred transmission timing and the remaining data retransmissions are transmitted at the retransmission candidates determined to be used.
14. The method according to one of the claims 12 to 13, further comprising the step of sending a scheduling assignment indicating the selected time-frequency radio resources for the first data transmission and identifying the determined data transmission timing pattern, Wherein the scheduling assignment further indicates which of the plurality of repeated data transmission timing patterns defines the retransmission timing for performing the one or more data retransmissions, wherein the data transmission timing pattern indication is encoded as a bit map, wherein bits of the bit map are respectively associated with one of the plurality of repeated data transmission timing patterns.
15. The method according to one of claims 10 to 13, wherein a data resource pool comprises a plurality of time-frequency radio resources available for the transmitting device to perform data transmission, the data resource pool being divided into time-frequency radio resources available for performing a first data transmission and into time-frequency radio resources available for performing a data retransmission, and Wherein the method comprises the steps of selecting, during the autonomous radio resource allocation, a time-frequency radio resource for performing a first data transmission among the time-frequency radio resources available for performing the first data transmission, Wherein the plurality of time-frequency radio resources of the data resource pool are divided in a time domain between time-frequency radio resources for a first data transmission and time-frequency radio resources for a data retransmission, Wherein the partitioning of the pool of data resources is preconfigured or configured by a radio base station controlling the transmitting device.
16. An integrated circuit that controls processing of a transmitting device for transmitting data to one or more receiving devices via a side link interface, wherein the transmission of the data includes a first data transmission and one or more data retransmissions subsequent to the first data transmission, the processing comprising: performing a resource sensing procedure for selecting radio resources available for the transmitting device to transmit data at a later point in time, Performing autonomous radio resource allocation based on the result of the resource sensing procedure during a sensing window, to select time-frequency radio resources within a transmission window to be used for performing the first data transmission, Determining a data transmission timing pattern among a plurality of data transmission timing patterns, each data transmission timing pattern indicating a transmission timing for performing one or more data transmissions, The first data transmission is performed using the selected time-frequency radio resource, Determining a retransmission timing for performing the one or more data retransmissions based on the transmission timing indicated by the determined data transmission timing pattern and a time gap between the first data transmission and the one or more data retransmissions, and The one or more data retransmissions are performed with the retransmission timing, Wherein the time gap is configurable, independent of the determined data transmission timing pattern, and known to the one or more receiving devices, and Wherein the one or more data retransmissions are performed within a time span defined by the determined length of the data transmission timing pattern.

Description

Transmission apparatus, method, and integrated circuit The application is a divisional application of China patent application of the applicant for releasing electric appliances (U.S.) intellectual property company, with the application date of 2017, 7-31, the application number of 201780048824.8 and the application name of 'improved initial transmission and retransmission of data for V2X transmission'. Technical Field The present disclosure relates to improved data transmission and resource allocation via a side link interface. The present disclosure provides corresponding methods and apparatus for the present invention. Background Long Term Evolution (LTE) Third generation mobile systems (3G) based on WCDMA radio access technology are being widely deployed worldwide. The first step in enhancing or developing the technology requires the introduction of High Speed Downlink Packet Access (HSDPA) and enhanced uplink, also known as High Speed Uplink Packet Access (HSUPA), to provide a very competitive radio access technology. In preparation for further increasing user demands and competing with new radio access technologies, 3GPP introduced a new mobile communication system called Long Term Evolution (LTE). LTE is designed to meet the demands of operators for high-speed data and media transmission and high-capacity voice support in the next decade. The ability to provide high bit rates is a key measure for LTE. The Work Item (WI) specification for Long Term Evolution (LTE), known as evolved UMTS Terrestrial Radio Access (UTRA) and UMTS Terrestrial Radio Access Network (UTRAN), was finalized as release 8 (LTE rel.8). LTE systems represent efficient packet-based radio access and radio access networks that provide fully IP-based functionality with low latency and low cost. In LTE, scalable multiple transmission bandwidths are specified, such as 1.4, 3.0, 5.0, 10.0, 15.0, and 20.0MHz, in order to achieve flexible system deployment using a given spectrum. In the downlink, orthogonal Frequency Division Multiplexing (OFDM) based radio access is employed because of its inherent immunity to multipath interference (MPI) due to the low symbol rate, the use of Cyclic Prefixes (CPs), and their affinity to different transmission bandwidth arrangements. Radio access based on single carrier frequency division multiple access (SC-FDMA) is employed in the uplink because the prioritization provides wide area coverage instead of improving peak data rates in view of limited transmission power of the User Equipment (UE). Many key packet radio access technologies are employed, including multiple input multiple output (MI MO) channel transmission technologies, and an efficient control signaling structure is implemented in LTE rel.8/9. LTE architecture The overall LTE architecture is shown in fig. 1. The E-UTRAN consists of evolved node Bs (eNodeBs) to provide E-UTRA user plane (PDCP/RLC/MAC/PHY) and control plane (RRC) protocol terminals to User Equipments (UEs). An eNodeB (eNB) hosts a Physical (PHY), medium Access Control (MAC), radio Link Control (RLC), and Packet Data Control Protocol (PDCP) layer including functions of user plane header compression and ciphering. It also provides Radio Resource Control (RRC) functions corresponding to the control plane. It performs many functions including radio resource management, admission control, scheduling, implementation of negotiated uplink quality of service (QoS), cell information broadcast, encryption/decryption of user and control plane data, and compression/decompression of downlink/uplink user plane packet headers. The enodebs are interconnected to each other by means of an X2 interface. The eNodeB is also connected to the EPC (evolved packet core) by means of an S1 interface, more specifically to the MME (mobility management entity) by means of an S1-MME, and to a Serving Gateway (SGW) by means of an S1-U. The S1 interface supports a many-to-many relationship between MME/serving gateway and eNodeB. The SGW routes and forwards user data packets while also acting as a mobility anchor for the user plane during inter-eNodeB handover and as an anchor for mobility between LTE and other 3GPP technologies (terminating S4 interface and relaying traffic between the 2G/3G system and PDN GW). For idle state user equipment, the SGW terminates the downlink data path and triggers paging when downlink data arrives at the user equipment. It manages and stores user equipment contexts such as parameters of IP bearer traffic or network internal routing information. It also performs duplication of user traffic in case of lawful interception. The MME is a key control node for the LTE access network. It is responsible for idle mode user equipment tracking and paging procedures, including retransmissions. It relates to bearer activation/deactivation procedures and is also responsible for selecting SGWs for user equipments at initial attachment and at intra-LTE handover involving Core Network (CN) node re