CN111970094B - Method and equipment for determining side link feedback resource - Google Patents

Method and equipment for determining side link feedback resource Download PDF

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CN111970094B
CN111970094B CN202010724141.3A CN202010724141A CN111970094B CN 111970094 B CN111970094 B CN 111970094B CN 202010724141 A CN202010724141 A CN 202010724141A CN 111970094 B CN111970094 B CN 111970094B
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carrier
feedback resource
feedback
resource pool
side link
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CN111970094A (en
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焦慧颖
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China Academy of Information and Communications Technology CAICT
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China Academy of Information and Communications Technology CAICT
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1854—Scheduling and prioritising arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1864—ARQ related signaling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1887—Scheduling and prioritising arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1896—ARQ related signaling
    • 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
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • 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 signaling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • 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
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria

Abstract

The application discloses a method for determining side link feedback resources, which is used for carrier aggregation communication of the internet of vehicles and comprises the following steps: a data resource pool of a first carrier for transmitting a side link data channel (PSSCH); after the end of the sidelink data channel, the earliest feedback resource which is not less than the first time parameter is used for transmitting sidelink feedback information (PSFCH) in a set carrier range; the location of the feedback resource is indexed in a feedback resource pool, which is a set of feedback resource configurations of at least one carrier. The application also proposes an apparatus and a system using said method. The method and the device solve the problem of how to determine feedback resources under the carrier aggregation condition of the Internet of vehicles.

Description

Method and equipment for determining side link feedback resource
Technical Field
The present disclosure relates to the field of wireless communications technologies, and in particular, to a method and apparatus for determining an edge link feedback resource.
Background
The internet of vehicles introduces carrier aggregation. The LTE-based internet of vehicles wireless communication technology (LTE-V2X) is an important technical means for realizing vehicle-road coordination and solving the road traffic safety problem. The LTE V2X standard of 3GPP Rel-14 is capable of supporting basic road safety related services in V2X services, and the 3GPP Rel-15 has been subject to V2X phase 2 standard project legislation for four and more advanced V2X applications, including operation of vehicle teams, advanced driving, vehicle sensor expansion and sharing, and remote driving. Wherein, aiming at the aim of improving the data transmission rate, the 3GPP takes the carrier aggregation of the V2X through link as a research direction to support at most 8 carrier aggregation and corresponding peak data transmission rate.
The Internet of vehicles wireless communication technology (NR V2X) based on the 5G NR architecture mainly supports public safety related services, and the NR V2X standard of the 3GPP Rel-16 version standardizes a basic physical layer architecture and can be used for supporting broadcast, unicast and multicast services. The 3GPP Rel-17 will introduce an enhanced V2X standard for emergency communication and commercial D2D communication for further enhancing public safety services not supported by Rel-16 and meeting new requirements for commercial D2D services. Where the content of the side link (sidelink) enhancements for eV2X traffic includes support for higher data rates, such as support for sharing high definition data, etc. One of the technical fields with a relatively promising prospect is a carrier aggregation technology, and a carrier aggregation scene of Rel-15 LTE v2x can be considered as a starting point, so that the capacity can be improved at least by supporting carrier aggregation. Considering that NR V2X supports unicast and multicast service transmission, new characteristics such as HARQ feedback in a carrier aggregation scenario should be further standardized.
The NR V2X single carrier PSFCH related content is as follows. In NR V2X, since unicast and multicast services are supported, the terminal supports HARQ-ACK feedback for the received PSSCH resources, and the feedback information is sent on the PSFCH channel. The standard specifies that when the terminal receives the PSSCH in the resource pool and asks for scheduling SCI of the PSSCH to instruct the terminal to report HARQ-ACK information, the terminal provides HARQ-ACK information in PSFCH transmission in the resource pool. The terminal transmits the PSFCH on the first slot containing the PSFCH resource after the MinTimeGapPSFCH time after receiving the last slot of the PSSCH.
The NR V2X introduces carrier aggregation for improving spectrum efficiency, and is different from carrier aggregation of LTE V2X in that NR V2X further supports unicast and broadcast communications, and requires a terminal to feed back HARQ-ACK on a PSFCH channel for received PSSCH data, and in that the number of configurations (numerology) of aggregated carriers may be different, NR supports 6 configurations, each corresponding to a subcarrier interval size and a cyclic prefix size. Based on these two points, a new definition is made in consideration of the choice of PSFCH feedback resources.
Disclosure of Invention
The application provides a method and equipment for determining side link feedback resources, which solve the problem of how to determine feedback resources under the carrier aggregation condition of the Internet of vehicles.
In a first aspect, the present application proposes a method for determining an edge link feedback resource, for carrier aggregation communication of internet of vehicles, including the following steps:
a data resource pool of a first carrier for transmitting a side link data channel (PSSCH);
after the end of the sidelink data channel, the earliest feedback resource which is not less than the first time parameter is used for transmitting sidelink feedback information (PSFCH) in a set carrier range;
the location of the feedback resource is indexed in a feedback resource pool, which is a set of feedback resource configurations of at least one carrier.
Preferably, the set carrier range is at least one of the following:
a first carrier;
n carriers for realizing carrier aggregation, wherein the N carriers comprise a first carrier;
among the N carriers for realizing carrier aggregation, the carrier with the smallest index;
among the N carriers for realizing carrier aggregation, the carrier with the smallest subcarrier spacing;
and among N carriers for realizing carrier aggregation, any M carriers (M is less than or equal to N).
In at least one embodiment of the present application,
the feedback resource pool comprises feedback resource allocation of a second carrier;
the time of the feedback resource allocation of the second carrier is the earliest feedback resource sending time which is not less than the first time parameter after the end of the side link data channel.
In at least one embodiment of the present application,
the feedback resource pool further comprises feedback resource allocation of a first carrier or a third carrier;
the time of the feedback resource configuration of the first carrier is the same as or overlaps with the time of the feedback resource configuration of the second carrier;
and the time of the feedback resource configuration of the third carrier is the same as or overlaps with the time of the feedback resource configuration of the second carrier.
In any one of the embodiments of the present application, the indexes of the feedback resources in the feedback resource pool are ordered according to the priority of the following parameters:
firstly, arranging according to the ascending order of carrier indexes;
then, according to the PRB coefficient ascending order in the carrier wave;
finally, the cyclic shift pairs are arranged in ascending order according to the coefficients of the cyclic shift pairs.
Preferably, in any one embodiment of the present application, first indication information is included, which is used for determining a position of the feedback resource pool;
preferably, in any one embodiment of the present application, second indication information is included, for determining an index of the feedback resource in the feedback resource pool; further preferably, the second indication information includes a sender identifier and/or a receiver identifier of the side link data channel.
The method of the first aspect of the present application, for a network device or a terminal device, comprises the following steps:
and sending first indication information, wherein the first indication information is used for determining the position of the feedback resource pool.
And sending second indicating information, wherein the second indicating information is used for determining the index of the feedback resource in the feedback resource pool. Further preferably, the second indication information includes a sender identifier and a receiver identifier of the side link data channel
The method of the first aspect of the present application is used for a terminal device, and further comprises the following steps:
receiving first indication information, wherein the first indication information is used for determining the position of the feedback resource pool;
the side link data channel is received at a data resource pool of a first carrier, side link feedback information is transmitted over the feedback resource, or,
and transmitting an edge link data channel in a data resource pool of the first carrier, and receiving edge link feedback information through the feedback resource.
Preferably, the method of the first aspect of the present application is used for a terminal device, and further comprises the following steps: and receiving second indication information, and determining the index of the feedback resource in the feedback resource pool according to the second indication information. Further preferably, the second indication information includes a sender identifier or a receiver identifier of the side link data channel
In a second aspect, the present application also proposes an apparatus for determining an edge link feedback resource, for use in an embodiment of any one of the methods of the first aspect of the present application, the apparatus being configured to,
determining a data resource pool of a first carrier for transmitting a side link data channel;
after the end of the data channel of the side link, determining the earliest feedback resource which is not less than the first time parameter in the set carrier range, and transmitting the feedback information of the side link;
the location of the feedback resource is indexed in a feedback resource pool, which is a set of feedback resource configurations of at least one carrier.
Further, the device is also used for,
receiving first indication information, wherein the first indication information is used for determining the position of the feedback resource pool;
receiving a side link data channel at a data resource pool of a first carrier;
and sending the side link feedback information through the feedback resource.
Further, the device is also used for,
and sending or receiving first indication information, wherein the first indication information is used for determining the position of the feedback resource pool.
Further, the device is also used for,
and sending or receiving second indicating information, wherein the second indicating information is used for determining the index of the feedback resource in the feedback resource pool.
Further, the present application also proposes a data transmission device, including: a memory, a processor and a computer program stored on the memory and executable on the processor, which when executed by the processor performs the steps of the method according to any one of the embodiments of the first aspect of the present application.
Further, the present application also proposes a computer readable medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method according to any of the embodiments of the first aspect of the present application.
The above-mentioned at least one technical scheme that this application embodiment adopted can reach following beneficial effect:
when introducing multi-carrier aggregation for the side link, the patent needs to feed back HARQ-ACK for unicast and multicast services, how to select a feedback resource pool and the feedback resources in the resource pool become the problems to be solved. In order to ensure that the side link data resources received by the terminal can obtain feedback, the patent proposes to find a PSFCH resource pool which meets the time sequence condition and is fed back as early as possible in the feedback resource pools of a plurality of carriers, or find a PSFCH resource pool on the same carrier as the scheduled data, or a PSFCH resource pool with the minimum subcarrier spacing, or a PSFCH resource pool of the carrier with the minimum index, so that the terminal can implicitly find the index of the corresponding feedback resource. The method for early feedback is that on the premise that the feedback resource pool meeting the minimum feedback time coefficient is found in the feedback resource pools of a plurality of carriers, feedback is carried out on the carrier with the feedback resource pool at the earliest, and when the resource pool meeting the condition is positioned on the plurality of carriers, an index ordering method of feedback resources is provided, so that the terminal can implicitly find the index of the corresponding feedback resource.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:
FIG. 1 is a flow chart of an embodiment of the method of the present application;
fig. 2 is a schematic diagram of a feedback resource pool located in a second carrier;
fig. 3 is a schematic diagram of a feedback resource pool located on a first carrier and a second carrier;
fig. 4 is a schematic diagram of a feedback resource pool located in a first carrier;
fig. 5 is a schematic diagram of another embodiment in which the feedback resource pool is located on the first carrier;
fig. 6 is a schematic diagram of a feedback resource pool located at a carrier index minimum carrier;
fig. 7 is a schematic diagram of a feedback resource pool located in a minimum subcarrier spacing carrier;
FIG. 8 is a flow chart of an embodiment of a method of the present application for a network device;
fig. 9 is a flowchart of an embodiment of a method for a terminal device according to the present application;
FIG. 10 is a schematic diagram of an embodiment of a network device;
FIG. 11 is a schematic diagram of an embodiment of a terminal device;
fig. 12 is a schematic structural diagram of a network device according to another embodiment of the present invention;
fig. 13 is a block diagram of a terminal device according to another embodiment of the present invention.
Detailed Description
For the purposes, technical solutions and advantages of the present application, the technical solutions of the present application will be clearly and completely described below with reference to specific embodiments of the present application and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
The following describes in detail the technical solutions provided by the embodiments of the present application with reference to the accompanying drawings.
FIG. 1 is a flow chart of an embodiment of the method of the present application.
The application provides a method for determining side link feedback resources, which is used for carrier aggregation communication of the Internet of vehicles and comprises the following steps 101-103:
step 101, PSSCH transmission;
the data resource pool of the first carrier is used to transmit a side link data channel (PSSCH).
The terminal receives data channels of N (N is a positive integer greater than 1, preferably N is equal to 8) carrier data resource pools.
102, determining a feedback resource pool;
after the end of the sidelink data channel, the feedback resource pool is positioned at the earliest feedback resource which is not less than the first time parameter after the last time slot of the data received by the terminal and is used for transmitting sidelink feedback information (PSFCH) in a set carrier range.
To achieve this, firstly, the earliest feedback resource allocation is determined within a set carrier range, the feedback resource pool is located within a range not smaller than the first time parameter after the last time slot of the data received by the terminal, and the feedback resource pool is a set of feedback resource allocation of at least one carrier, see in particular embodiments 1-6 below.
The set carrier range is at least one of the following:
a first carrier;
n carriers (N is a positive integer greater than 1, preferably N is equal to 8) implementing carrier aggregation, including a first carrier;
among the N carriers for realizing carrier aggregation, the carrier with the smallest index;
among the N carriers for realizing carrier aggregation, the carrier with the smallest subcarrier spacing;
and among N carriers for realizing carrier aggregation, any M carriers (M is less than or equal to N).
Preferably, in any one embodiment of the present application, first indication information is included, which is used to determine a location of the feedback resource pool.
Step 103, determining feedback resources;
and the terminal selects feedback resources in the feedback resource pool to report the HARQ-ACK information. The location of the feedback resource is indexed in a feedback resource pool.
In any one of the embodiments of the present application, the indexes of the feedback resources in the feedback resource pool are ordered according to the priority of the following parameters:
firstly, arranging according to the ascending order of carrier indexes;
then, according to the PRB coefficient ascending order in the carrier wave;
finally, the cyclic shift pairs are arranged in ascending order according to the coefficients of the cyclic shift pairs.
Preferably, in any one embodiment of the present application, second indication information is included, for determining an index of the feedback resource in the feedback resource pool; further preferably, the second indication information includes a sender identifier and a receiver identifier of the side link data channel.
Fig. 2 is a schematic diagram of the feedback resource pool in the second carrier according to embodiment 1.
In embodiment 1 of the present application, the feedback resource pool includes a feedback resource configuration of a second carrier; the time of the feedback resource allocation of the second carrier is the earliest feedback resource sending time which is not less than the first time parameter after the end of the side link data channel.
The set carrier range is N carriers for realizing carrier aggregation, wherein feedback resources of a plurality of carriers are not overlapped in the range of any M carriers (M is less than or equal to N), and the earliest resource pool meeting the condition of not less than a time parameter minT is selected for selecting the feedback resources.
Here, two carriers are aggregated on the side link, the data resource of the downlink control channel of the terminal receiving side link is located on the first carrier, and the earliest feedback resource pool meeting the condition of not less than the time parameter min T is located on the second carrier, so that the feedback resource pool on the second carrier is selected, and the corresponding resource is found out through the implicit mapping of the sending terminal ID and the receiving terminal ID to be used for sending the side link feedback HARQ-ACK.
Fig. 3 is a schematic diagram of a feedback resource pool located in a first carrier and a second carrier in embodiment 2.
In embodiment 2 of the present application, the feedback resource pool further includes a feedback resource configuration of the first carrier in addition to a feedback resource configuration of the second carrier; and the time of the feedback resource configuration of the first carrier is the same as the time of the feedback resource configuration of the second carrier.
The set carrier range is N carriers for realizing carrier aggregation, wherein the N carriers comprise a first carrier, the number of time slots of feedback resource allocation of a plurality of carriers in the N carriers is the same, and the feedback resources of the plurality of carriers are completely overlapped.
Here, two carriers are aggregated by the side link, the data resource of the downlink control channel of the terminal receiving side link is located in the first carrier, and since the earliest feedback resource pool meeting the condition of not less than the time parameter minT is the same in the time domain of the second carrier and the first carrier, the feedback resource pools of the second carrier and the first carrier are regarded as a unified resource pool, and the resources of the feedback resource pools are numbered.
It should be noted that, similar to embodiment 2 of the present application, further, it is also contemplated that the feedback resource pool further includes a feedback resource configuration of a third carrier (instead of the first carrier) in addition to the feedback resource configuration of the second carrier; and the time of the feedback resource configuration of the third carrier coincides with the time of the feedback resource configuration of the second carrier. That is, N carriers for realizing carrier aggregation do not include the first carrier, and the number of slots of the feedback resource configuration of the plurality of carriers in the N carriers is different, and the feedback resources of the plurality of carriers overlap.
Fig. 4 is a schematic diagram of a feedback resource pool located in a first carrier in embodiment 3.
In embodiment 3 of the present application, the feedback resource pool includes a feedback resource configuration of a first carrier; the time of the feedback resource configuration of the first carrier and the time of the feedback resource configuration of the second carrier are partially overlapped.
The set carrier range is N carriers for realizing carrier aggregation, wherein the N carriers comprise a first carrier, the number of time slots of feedback resource allocation of a plurality of carriers in the N carriers is different, the feedback resources of the plurality of carriers are partially overlapped, here, for example, the data resources of the downlink control channels of the two carrier terminals for receiving the side link in the side link aggregation are positioned on the first carrier, and because the earliest feedback resource pool meeting the condition of not less than a time parameter minT on the second carrier and the first carrier is partially overlapped, the feedback resource pool on the first carrier is selected in consideration of the early feedback resource time of the first carrier, and the corresponding resource index is found for sending the side link feedback HARQ-ACK through the implicit mapping of the parameters at least comprising the sending terminal ID and the receiving terminal ID.
Fig. 5 is a schematic diagram of another embodiment in which the feedback resource pool is located in the first carrier in embodiment 4.
In embodiment 4 of the present application, the feedback resource pool is located on the first carrier, and the set carrier range includes only the first carrier.
At this time, the feedback resource pool is located on the same carrier on which the terminal receives data, that is, on the first carrier, the earliest feedback resource pool satisfying the condition of not less than the time parameter minT.
In embodiment 4, the terminal receives the first control information, and instructs the terminal to receive data channels of N (N is a positive integer greater than 1, preferably N is equal to 8) carrier data resource pools, and the terminal selects feedback resources in the feedback resource pools for reporting HARQ-ACK information; the feedback resource pool is located on the same carrier wave on which the terminal receives the data.
Here, two carriers are aggregated on the side link, the data resource of the downlink control channel of the side link received by the terminal is located in the first carrier, the carrier in which the feedback resource pool is located is the same as the data carrier indicated by the downlink control channel received by the terminal, and the corresponding resource is found from the implicit mapping at that time by at least transmitting terminal ID and receiving terminal ID, etc. for transmitting the side link feedback HARQ-ACK.
Fig. 6 is a schematic diagram of a feedback resource pool located at the carrier index minimum carrier in embodiment 5.
In embodiment 5 of the present application, the feedback resource pool is located on a carrier with the smallest carrier index of the aggregated carrier data amount received by the terminal, and at this time, the set carrier range only includes the carrier with the smallest index among the N carriers for implementing carrier aggregation.
The terminal receives first control information, indicates the terminal to receive data channels of N (N is a positive integer greater than 1, and N is preferably equal to 8) carrier data resource pools, and selects feedback resources in the feedback resource pools for reporting HARQ-ACK information; the feedback resource pool is located on the carrier with the smallest carrier index for receiving the aggregated carrier data by the terminal, and the earliest feedback resource pool (the carrier with the smallest carrier index in the figure is the second carrier) meeting the condition of not less than the time parameter minT.
Here, the data resources of the downlink control channels received by two carrier terminals for the side link aggregation are located on the first carrier, the feedback resource pool is located on the carrier with the smallest carrier index of the carrier data for the terminal to receive the aggregation, and the corresponding resource index is found by implicit mapping of parameters including at least the sending terminal ID and the receiving terminal ID and used for sending the side link feedback HARQ-ACK.
Fig. 7 is a schematic diagram of a feedback resource pool located at a minimum subcarrier spacing in embodiment 6.
In embodiment 6 of the present application, the feedback resource pool is located on a carrier with a minimum subcarrier spacing for the terminal to receive the aggregated carrier data, and at this time, the set carrier range only includes the carrier with the minimum subcarrier spacing among N carriers for implementing carrier aggregation.
The terminal receives first control information, indicates the terminal to receive data channels of N (N is a positive integer greater than 1, and N is preferably equal to 8) carrier data resource pools, and selects feedback resources in the feedback resource pools for reporting HARQ-ACK information; the feedback resource pool is positioned on a carrier with the minimum subcarrier interval for the terminal to receive the aggregated carrier data.
Here, the data resources of the downlink control channels received by two carrier terminals of the side link aggregation are located on the first carrier, and since the feedback resource pool of the carrier with the minimum subcarrier spacing is located on the first carrier and meets the condition of not less than the time parameter minT, the feedback resource pool on the first carrier is selected, and the corresponding resource index is found for sending the side link feedback HARQ-ACK through the implicit mapping of the parameters including at least the sending terminal ID and the receiving terminal ID.
Fig. 8 is a flowchart of an embodiment of a method of the present application for a network device.
Embodiments of the methods described herein for a network device may include the following steps 201-202:
when the mobile communication system comprises a network device and at least 2 terminal devices, wherein the first terminal device and the second terminal device carry out side link information transmission and feedback, indication information can be sent to the first terminal device and the second terminal device through the network device, so that the protocols of the first terminal device and the second terminal device are consistent.
Step 201, sending first indication information, where the first indication information is used to determine a position of the feedback resource pool.
For a method of determining the feedback resource pool by using the first indication information, see step 102, embodiments 1 to 6 of the present application.
One way of applying the first indication information is to indicate a method for determining a position of a feedback resource pool, so that a first terminal device or a second terminal device implicitly determines a specific position of the feedback resource pool according to the indication of the first indication information.
Another way of applying the first indication information is to directly indicate the position of the feedback resource pool, so that the first terminal device or the second terminal device directly obtains the specific position of the feedback resource pool according to the indication of the first indication information.
Step 202, sending second indication information, where the second indication information is used to determine an index of the feedback resource in the feedback resource pool.
See step 103 of the embodiment of the present application for a method for determining the feedback resource pool using the second indication information.
Further preferably, the second indication information includes a sender identifier and a receiver identifier of the side link data channel.
One way of applying the second indication information is to instruct a method for determining the index of the feedback resource, so that the first terminal device or the second terminal device implicitly determines the index of the feedback resource according to the indication of the second indication information.
Another way of applying the second indication information is to directly indicate the index of the feedback resource, so that the first terminal device or the second terminal device directly obtains the index of the feedback resource according to the indication of the second indication information.
Fig. 9 is a flowchart of an embodiment of a method for a terminal device according to the present application.
When the mobile communication system comprises a network device and at least 2 terminal devices, wherein the first terminal device and the second terminal device perform the transmission and feedback of the side link information, the embodiment of the method for the terminal device described in the application may comprise the following steps 301 to 304:
step 301, PSSCH transmission;
when a network device (base station) and a plurality of terminal devices are included in a mobile communication network, PSSCH transmission occurs between mobile terminals, e.g., a second mobile terminal transmits a side link data channel (PSSCH) in a data resource pool of a first carrier; the first mobile terminal receives a side link data channel (PSSCH) in a data resource pool of a first carrier.
Step 302, transmitting first indication information;
the first indication information is used for determining the position of the feedback resource pool.
The network device or at least one terminal device sends the first indication information, and at least one terminal device receives the first indication information.
For example, the network device sends the first indication information, as described in step 201 in the embodiment of the present application; the first terminal device and the second terminal device receive the first indication information.
For another example, the second terminal device sends the first indication information, and the first terminal device receives the first indication information.
And any one terminal device determines the position of the feedback resource pool by using the first indication information.
One way of applying the first indication information is to indicate a method for determining a position of a feedback resource pool, so that a first terminal device or a second terminal device implicitly determines a specific position of the feedback resource pool according to the indication of the first indication information.
Another way of applying the first indication information is to directly indicate the position of the feedback resource pool, so that the first terminal device or the second terminal device directly obtains the specific position of the feedback resource pool according to the indication of the first indication information.
Step 303, transmitting second instruction information;
the second indication information is used for determining an index of the feedback resource in the feedback resource pool.
The network device or at least one terminal device sends the second indication information, and at least one terminal device receives the second indication information.
For example, the network device sends the second indication information, as described in step 202 in the embodiment of the present application; the first terminal device and the second terminal device receive the second indication information.
For another example, the second terminal device sends the second indication information, and the first terminal device receives the second indication information. At this time, the second indication information further includes an identifier of the second terminal.
For another example, the first terminal device sends the second indication information, and the second terminal device receives the second indication information. At this time, the second indication information further includes an identifier of the first terminal.
And any one terminal equipment can use the second indication information to determine the index of the feedback resource. For example, the first terminal device or the second terminal device receives the second indication information, and determines the index of the feedback resource in the feedback resource pool according to the second indication information.
One way of applying the second indication information is to instruct a method for determining the index of the feedback resource, so that the first terminal device or the second terminal device implicitly determines the index of the feedback resource according to the indication of the second indication information.
The feedback resource index ordering of the resource pool is as follows: firstly, according to the ascending order of carrier coefficients, the carrier coefficients are configured by a high-layer signaling; then, the PRB coefficients are arranged in ascending order; and then arranged in ascending order according to the coefficients of the cyclic shift pair. The corresponding resource index is found for transmitting the side link feedback HARQ-ACK by implicit mapping of parameters including at least the transmitting terminal ID and the receiving terminal ID.
Another way of applying the second indication information is to directly indicate the index of the feedback resource, so that the first terminal device or the second terminal device directly obtains the index of the feedback resource according to the indication of the second indication information.
Step 304, PSFCH transmission;
for example, the first terminal device sends the side link feedback information through the feedback resource; and the second terminal equipment receives the side link feedback information through the feedback resource.
Fig. 10 is a schematic diagram of an embodiment of a network device.
The embodiment of the application also provides a network device, and the network device is used for:
the first indication information is determined and transmitted, and/or the second indication information is determined and transmitted.
In order to implement the above technical solution, a device (or network device) 400 provided in the present application includes a network sending module 401, a network determining module 402, and a network receiving module 403.
The network sending module is used for sending special signaling or broadcasting information, and comprises first indication information and second indication information.
The network determining module is used for determining the first indication information and the second indication information.
The network receiving module is used for receiving uplink control information or uplink data, and is also used for receiving random access requests and connection requests.
Specific methods for implementing the functions of the network sending module, the network determining module and the network receiving module are described in the embodiments of the methods shown in fig. 1 to 9 of the present application, and are not repeated here.
Fig. 11 is a schematic diagram of an embodiment of a terminal device.
The application also proposes a terminal device, using the method of any one of the embodiments of the application, the terminal device being configured to:
determining a data resource pool of a first carrier for transmitting a side link data channel;
after the end of the data channel of the side link, determining the earliest feedback resource which is not less than the first time parameter in the set carrier range, and transmitting the feedback information of the side link;
the location of the feedback resource is indexed in a feedback resource pool, which is a set of feedback resource configurations of at least one carrier.
Receiving first indication information, wherein the first indication information is used for determining the position of the feedback resource pool;
receiving a side link data channel at a data resource pool of a first carrier; transmitting side link feedback information through the feedback resource; or, transmitting an edge link data channel in a data resource pool of the first carrier; and receiving the side link feedback information through the feedback resource.
Further, the device is further configured to send or receive first indication information, where the first indication information is used to determine a location of the feedback resource pool.
Further, the device is further configured to send or receive second indication information, where the second indication information is used to determine an index of the feedback resource in the feedback resource pool.
In order to implement the above technical solution, an apparatus (or terminal device) 500 provided in the present application includes a terminal sending module 501, a terminal determining module 502, and a terminal receiving module 503.
The terminal receiving module is configured to receive the PSSCH, the PSFCH, the first indication information, and the second indication information. When the device is used for a first terminal device, the terminal receiving module is used for receiving the PSSCH, and further can be used for receiving first indication information and/or second indication information. The terminal receiving module is configured to receive the PSFCH when the device is used for a second terminal device, and further may be configured to receive first indication information and/or second indication information.
The terminal determining module is configured to determine a location of the feedback resource pool, and further determine an index of the feedback resource (i.e., a location of the feedback resource in the feedback resource pool).
The terminal sending module is used for sending PSSCH, PSFCH, first indication information and second indication information. When the device is used for a first terminal device, the terminal sending module is used for sending the PSFCH, and further can be used for sending first indication information and/or second indication information; when the device is used for the second terminal device to receive, the terminal receiving module is used for sending the PSSCH, and further, can be used for sending the first indication information and/or the second indication information.
Specific methods for implementing the functions of the terminal sending module, the terminal determining module and the terminal receiving module are described in the embodiments of the methods shown in fig. 1 to 9 of the present application, and are not repeated here.
The terminal device described in the application may refer to a mobile terminal device.
Fig. 12 is a schematic structural diagram of a network device according to another embodiment of the present invention. As shown, the network device 600 includes a processor 601, a wireless interface 602, and a memory 603. Wherein the wireless interface may be a plurality of components, i.e. comprising a transmitter and a receiver, providing a means for communicating with various other apparatuses over a transmission medium. The wireless interface performs the communication function with the terminal device, and processes wireless signals through the receiving and transmitting device, and data carried by the signals are communicated with the memory or the processor through the internal bus structure. The memory 603 contains a computer program for executing any of the embodiments of fig. 1-6 of the present application, which computer program runs or changes on the processor 601. When the memory, processor, wireless interface circuit are connected through a bus system. The bus system includes a data bus, a power bus, a control bus, and a status signal bus, which are not described here again.
Fig. 13 is a block diagram of a terminal device according to another embodiment of the present invention. The terminal device 700 comprises at least one processor 701, a memory 702, a user interface 703 and at least one network interface 704. The various components in terminal device 700 are coupled together by a bus system. Bus systems are used to enable connected communication between these components. The bus system includes a data bus, a power bus, a control bus, and a status signal bus.
The user interface 703 may include a display, keyboard, or pointing device, such as a mouse, trackball, touch pad, or touch screen, among others.
The memory 702 stores executable modules or data structures. The memory may store an operating system and application programs. The operating system includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, for implementing various basic services and processing hardware-based tasks. The application programs include various application programs such as a media player, a browser, etc. for implementing various application services.
In an embodiment of the present invention, the memory 702 contains a computer program that executes on the processor 701 or changes to the computer program that implements any of the embodiments of fig. 1-9 of the present application.
The memory 702 contains a computer readable storage medium, and the processor 701 reads the information in the memory 702 and performs the steps of the above method in combination with its hardware. In particular, the computer readable storage medium has stored thereon a computer program which, when executed by the processor 701, implements the steps of the method embodiments described in any of the embodiments of fig. 1-6 above.
The processor 701 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the methods of the present application may be performed by integrated logic circuitry in hardware or instructions in software in processor 701. The processor 701 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, an off-the-shelf programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component. The disclosed methods, steps, and logic blocks in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be embodied directly in the execution of a hardware decoding processor, or in the execution of a combination of hardware and software modules in a decoding processor.
It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. In one typical configuration, the device of the present application includes one or more processors (CPUs), an input/output user interface, a network interface, and memory.
Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Accordingly, the present application also proposes a computer readable medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method according to any of the embodiments of the present application. For example, the memory 603, 702 of the present invention may include non-volatile memory in a computer-readable medium, random Access Memory (RAM) and/or non-volatile memory, etc., such as read-only memory (ROM) or flash RAM.
Computer readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of storage media for a computer include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device. Computer-readable media, as defined herein, does not include transitory computer-readable media (transmission media), such as modulated data signals and carrier waves.
Based on the embodiments of fig. 10 to 13, the present application also proposes a mobile communication system comprising at least 1 embodiment of any one of the terminal devices of the present application and/or at least 1 embodiment of any one of the network devices of the present application.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.
In the present application, "first", "second" and "third" are used to distinguish between objects of the same name, and are not used to indicate the size and order, but have no particular meaning unless otherwise specified.
The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and changes may be made to the present application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. which are within the spirit and principles of the present application are intended to be included within the scope of the claims of the present application.

Claims (13)

1. A method for determining side link feedback resources for use in carrier aggregation communications of the internet of vehicles, comprising the steps of:
the data resource pool of the first carrier is used for transmitting a side link data channel PSSCH;
after the end of the data channel of the side link, the earliest feedback resource which is not less than the first time parameter is used for transmitting the feedback information PSFCH of the side link in the set carrier range;
the position of the feedback resource is indexed in a feedback resource pool, and the feedback resource pool is a set of feedback resource configurations of at least one carrier;
the set carrier range is at least one of the following:
a first carrier;
n carriers for realizing carrier aggregation, wherein the N carriers comprise a first carrier;
among the N carriers for realizing carrier aggregation, the carrier with the smallest index;
among the N carriers for realizing carrier aggregation, the carrier with the smallest subcarrier spacing;
and among N carriers for realizing carrier aggregation, M is less than or equal to N, and M is any M carriers.
2. The method of claim 1, wherein,
the feedback resource pool comprises feedback resource allocation of a second carrier;
the time of the feedback resource allocation of the second carrier is the earliest feedback resource sending time which is not less than the first time parameter after the end of the side link data channel.
3. The method of claim 2, wherein,
the feedback resource pool further comprises feedback resource allocation of a first carrier or a third carrier;
the time of the feedback resource configuration of the first carrier coincides with the time of the feedback resource configuration of the second carrier;
and the time of the feedback resource configuration of the third carrier coincides with the time of the feedback resource configuration of the second carrier.
4. The method of claim 1, wherein,
the indexes of the feedback resources in the feedback resource pool are ordered according to the priority of the following parameters:
firstly, arranging according to the ascending order of carrier indexes;
then, according to the PRB coefficient ascending order in the carrier wave;
finally, the cyclic shift pairs are arranged in ascending order according to the coefficients of the cyclic shift pairs.
5. The method of claim 1, wherein,
and determining the index of the feedback resource in the feedback resource pool according to the second indication information.
6. The method of claim 5, wherein,
the second indication information includes a sender identifier and/or a receiver identifier of the side link data channel.
7. A method according to any one of claims 1 to 6, for use in a terminal device,
receiving first indication information, wherein the first indication information is used for determining the position of the feedback resource pool;
receiving a side link data channel at a data resource pool of a first carrier;
and sending the side link feedback information through the feedback resource.
8. A method according to any one of claims 1 to 6, for a network device or a terminal device,
and sending first indication information, wherein the first indication information is used for determining the position of the feedback resource pool.
9. An apparatus for determining an edge link feedback resource using the method of any one of claims 1-6,
determining a data resource pool of a first carrier for transmitting a side link data channel;
after the end of the data channel of the side link, determining the earliest feedback resource which is not less than the first time parameter in the set carrier range, and transmitting the feedback information of the side link;
the location of the feedback resource is indexed in a feedback resource pool, which is a set of feedback resource configurations of at least one carrier.
10. The apparatus of claim 9, wherein,
receiving first indication information, wherein the first indication information is used for determining the position of the feedback resource pool;
receiving a side link data channel at a data resource pool of a first carrier;
and sending the side link feedback information through the feedback resource.
11. The apparatus of claim 9, wherein,
and sending first indication information, wherein the first indication information is used for determining the position of the feedback resource pool.
12. An apparatus for data transmission, comprising: memory, a processor and a computer program stored on the memory and executable on the processor, which when executed by the processor performs the steps of the method according to any one of claims 1 to 8.
13. A computer readable medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method according to any of claims 1-8.
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