CN111970094A - Method and equipment for determining side link feedback resources - Google Patents

Method and equipment for determining side link feedback resources Download PDF

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Publication number
CN111970094A
CN111970094A CN202010724141.3A CN202010724141A CN111970094A CN 111970094 A CN111970094 A CN 111970094A CN 202010724141 A CN202010724141 A CN 202010724141A CN 111970094 A CN111970094 A CN 111970094A
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carrier
feedback resource
feedback
resource pool
side link
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CN111970094B (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

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  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

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

Description

Method and equipment for determining side link feedback resources
Technical Field
The present application relates to the field of wireless communications technologies, and in particular, to a method and a device for determining an edge link feedback resource.
Background
The car networking introduces carrier aggregation. The LTE-based wireless communication technology (LTE-V2X) of the Internet of vehicles is an important technical means for realizing vehicle-road cooperation and solving the problem of road traffic safety. The LTE V2X standard of 3GPP Rel-14 release is capable of supporting basic road safety related services in V2X services, and 3GPP Rel-15 has made phase 2 standard project V2X standings for four major more advanced V2X applications, including vehicle fleet operation, advanced driving, vehicle sensor extension and sharing, and remote driving. In order to improve the data transmission rate, the 3GPP uses carrier aggregation of the V2X direct link as a research direction in order to support up to 8 carrier aggregation and corresponding peak data transmission rate.
The vehicle networking 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. 3GPP Rel-17 will introduce an enhanced V2X standard for emergency communications and commercial D2D communications to further enhance public safety services not supported by Rel-16 and meet the new requirements of commercial D2D services. Content in which side link (sidelink) enhancements for eV2X traffic include support for higher data rates, such as support for shared high definition data, and the like. One of the promising technical fields is carrier aggregation technology, which can take the carrier aggregation scenario of Rel-15 LTE V2X as a starting point, and at least support carrier aggregation to improve capacity. Considering that NR V2X supports unicast and multicast traffic transmission, new characteristics such as HARQ feedback in a carrier aggregation scenario are further standardized.
The NR V2X single carrier PSFCH correlation content is as follows. In NR V2X, the terminal supports HARQ-ACK feedback on the received PSSCH resources since unicast and multicast traffic is supported, and this feedback information is sent on the PSFCH channel. The standard specifies that when a terminal receives a PSSCH in a resource pool and requests that the SCI scheduling the PSSCH indicate that the terminal is reporting HARQ-ACK information, the terminal provides HARQ-ACK information in PSFCH transmissions in the resource pool. And after receiving MinTimeGapPSFCH time after the last time slot of the PSSCH, the terminal transmits the PSFCH on the first time slot containing the PSFCH resources.
NR V2X introduces carrier aggregation for improving spectral efficiency, which is different from that of LTE V2X in that NR V2X further supports unicast and broadcast communication, requiring the terminal to feed back HARQ-ACK on the PSFCH channel for the received PSSCH data, and another difference is that the number of configurations (numerology) of the aggregated carriers may be different, and NR supports 6 configurations, each corresponding to a subcarrier spacing size and the size of the cyclic prefix. Based on the two points, a new definition is made on the selection of the PSFCH feedback resource.
Disclosure of Invention
The application provides a method and equipment for determining side link feedback resources, and solves the problem of how to determine the feedback resources under the condition of vehicle networking carrier aggregation.
In a first aspect, the present application provides a method for determining side link feedback resources, which is used for vehicle networking carrier aggregation communication, and includes the following steps:
a data resource pool of a first carrier is used to transmit a sidelink data channel (PSSCH);
after the side link data channel is finished, transmitting side link feedback information (PSFCH) by using the earliest feedback resource which is not less than the first time parameter within 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 for at least one carrier.
Preferably, the set carrier range is at least one of the following:
a first carrier wave;
n carriers for realizing carrier aggregation, wherein the N carriers comprise a first carrier;
indexing the carrier with the minimum index from the N carriers for realizing the carrier aggregation;
the carrier with the minimum subcarrier spacing is selected from the N carriers for realizing the carrier aggregation;
and any M carriers (M is less than or equal to N) in the N carriers for realizing the carrier aggregation.
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 time of sending the feedback resource 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 the first carrier or the third carrier;
the time of the feedback resource configuration of the first carrier is the same as or overlapped with the time of the feedback resource configuration of the second carrier;
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 embodiment of the present application, the indexes of the feedback resources in the feedback resource pool are sorted according to the priority of the following parameters:
firstly, arranging according to the ascending order of carrier indexes;
then, arranging according to PRB coefficients in the carrier wave in an ascending order;
and finally, arranging the coefficients according to the cyclic shift pairs in an ascending order.
Preferably, in any embodiment of the present application, the method includes a first indication information, configured to determine a location of the feedback resource pool;
preferably, in any embodiment of the present application, second indication information is included, which is used to determine an index of the feedback resource in the feedback resource pool; further preferably, the second indication information includes a sending end identifier and/or a receiving end identifier of the side link data channel.
The method of the first aspect of the present application, applied to a network device or a terminal device, includes 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 indication information, wherein the second indication 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 id and a receiver id of the side link data channel
The method of the first aspect of the present application, applied to a terminal device, further includes the following steps:
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,
and sending a side link data channel in a data resource pool of the first carrier, and receiving side link feedback information through the feedback resource.
Preferably, the method of the first aspect of the present application is applied to a terminal device, and further includes 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 sending end identifier or a receiving end identifier of the side link data channel
In a second aspect, the present application further proposes an apparatus for determining edge link feedback resources, for an embodiment of any one of the methods in the first aspect of the present application, the apparatus being configured to,
determining a data resource pool of a first carrier, which is used for transmitting a side link data channel;
after the side link data channel is finished, determining the earliest feedback resource which is not less than the first time parameter in a set carrier wave range and is used for transmitting side link feedback information;
the location of the feedback resource is indexed in a feedback resource pool, which is a set of feedback resource configurations for at least one carrier.
Further, the apparatus is also 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 in a data resource pool of a first carrier;
and sending the side link feedback information through the feedback resource.
Further, the apparatus is also 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 apparatus is also for,
and sending or receiving second indication information, wherein the second indication information is used for determining the index of the feedback resource in the feedback resource pool.
Further, the present application also provides a device for data transmission, including: memory, a processor and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the method according to any one of the embodiments of the first aspect of the application.
Further, the present application also proposes a computer-readable medium on which a computer program is stored, which computer program, when being executed by a processor, realizes the steps of the method according to any one of the embodiments of the first aspect of the present application.
The embodiment of the application adopts at least one technical scheme which can achieve the following beneficial effects:
the patent aims at solving the problems that when multicarrier aggregation is introduced into a sidelink, HARQ-ACK needs to be fed back for unicast and multicast services, how to select a feedback resource pool, and feedback resources in the resource pool. In order to ensure that the side link data resource received by the terminal can obtain feedback, the patent proposes to find a PSFCH resource pool satisfying a time sequence condition and fed back as early as possible in the feedback resource pools of multiple carriers, or find a PSFCH resource pool on a carrier same as scheduled data, or a PSFCH resource pool with a minimum subcarrier interval, or a PSFCH resource pool of a carrier with a minimum index, so that the terminal can implicitly find an index of a corresponding feedback resource. The method for feeding back as early as possible is to feed back on the carrier with the earliest feedback resource pool on the premise that the feedback minimum time coefficient is found in the feedback resource pools of the multiple carriers, and when the resource pools meeting the conditions are positioned on the multiple carriers, an index sorting method of the 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 embodiment(s) of the application and together with the description serve to explain the application and not to limit 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 in 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 diagram of another embodiment in which a feedback resource pool is located in a 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 at a subcarrier spacing minimum carrier;
FIG. 8 is a flow chart of an embodiment of a method of the present application for use with a network device;
FIG. 9 is a flowchart of an embodiment of a method of the present application for a terminal device;
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 of another embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The technical solutions provided by the embodiments of the present application are described in detail below 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 vehicle networking carrier aggregation communication and comprises the following steps of 101-103:
step 101, PSSCH transmission;
the data resource pool of the first carrier is used to transmit a sidelink 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.
Step 102, determining a feedback resource pool;
after the side link data channel is finished, in a set carrier range, the feedback resource pool is located at the earliest feedback resource which is not less than the first time parameter after the last time slot of the terminal receiving data, and is used for transmitting side link feedback information (PSFCH).
To achieve this, first, in a set carrier range, the feedback resource pool is located in a range that is not less than a first time parameter after a last timeslot where a terminal receives data, and an earliest feedback resource configuration is determined, where the feedback resource pool is a set of feedback resource configurations of at least one carrier, as described in embodiments 1 to 6 below.
The set carrier range is at least one of the following:
a first carrier wave;
n carriers (N is a positive integer greater than 1, preferably N is equal to 8) implementing carrier aggregation, including the first carrier;
indexing the carrier with the minimum index from the N carriers for realizing the carrier aggregation;
the carrier with the minimum subcarrier spacing is selected from the N carriers for realizing the carrier aggregation;
and any M carriers (M is less than or equal to N) in the N carriers for realizing the carrier aggregation.
Preferably, in any embodiment of the present application, first indication information is included, and 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 be used for reporting the HARQ-ACK information. The location of the feedback resource is indexed in a feedback resource pool.
In any embodiment of the present application, the indexes of the feedback resources in the feedback resource pool are sorted according to the priority of the following parameters:
firstly, arranging according to the ascending order of carrier indexes;
then, arranging according to PRB coefficients in the carrier wave in an ascending order;
and finally, arranging the coefficients according to the cyclic shift pairs in an ascending order.
Preferably, in any embodiment of the present application, second indication information is included, which is used to determine an index of the feedback resource in the feedback resource pool; further preferably, the second indication information includes a sending end identifier and a receiving end identifier of the side link data channel.
Fig. 2 is a schematic diagram of embodiment 1, where a feedback resource pool is located in a second carrier.
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 time of sending the feedback resource 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 in the range of any M carriers (M is less than or equal to N), the feedback resources of the multiple carriers are not overlapped, and the earliest resource pool which meets the condition of not less than the time parameter minT is selected to select the feedback resources.
Here, for example, two carriers are aggregated on the side link, the data resource of the downlink control channel of the receiving side link of the terminal is located on the first carrier, and since the earliest feedback resource pool meeting the condition of not less than the time parameter min T is located on the second carrier, the feedback resource pool on the second carrier is selected, and the corresponding resource is found for sending the side link feedback HARQ-ACK through implicit mapping of the sending terminal ID and the receiving terminal ID.
Fig. 3 is a schematic diagram of embodiment 2, where the feedback resource pool is located in a first carrier and a second carrier.
In embodiment 2 of the present application, the feedback resource pool further includes a feedback resource configuration of a first carrier in addition to a feedback resource configuration of a 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 configuration 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, for example, the side link aggregates two carriers, the data resource of the side link downlink control channel received by the terminal is located in the first carrier, and since the earliest feedback resource pool satisfying the condition that the time parameter minT is not less than 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 uniform 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, it may further be considered that the feedback resource pool 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 to say, N carriers implementing carrier aggregation do not include the first carrier, the number of time slots of feedback resource configurations of multiple carriers in the N carriers is different, and the feedback resources of the multiple carriers overlap.
Fig. 4 is a schematic diagram of embodiment 3, where a feedback resource pool is located in a first carrier.
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 partially overlap.
The method includes the steps that a set carrier range is N carriers for realizing carrier aggregation, wherein the carrier range includes a first carrier, the number of time slots of feedback resource configurations of the carriers in the N carriers is different, and the feedback resources of the carriers are partially overlapped, for example, data resources of a side link downlink control channel received by two carrier terminals for side link aggregation are located on the first carrier, as the earliest feedback resource pools meeting the condition of not less than a time parameter minT on a second carrier and the first carrier are partially overlapped, the feedback resource pool on the first carrier is selected in consideration of the fact that the feedback resource time of the first carrier is earlier, and a corresponding resource index is found for sending side link feedback HARQ-ACK through implicit mapping of parameters at least including a sending terminal ID and a receiving terminal ID.
Fig. 5 is a schematic diagram of embodiment 4, in which the feedback resource pool is located in the first carrier.
In embodiment 4 of the present application, the feedback resource pool is located on a first carrier, and at this time, the set carrier range only includes the first carrier.
At this time, the feedback resource pools are located on the same carrier on which the terminal receives data, that is, on the first carrier, the earliest feedback resource pool that satisfies the condition of not less than the time parameter minT is satisfied.
In embodiment 4, a terminal receives first control information, and instructs the terminal to receive data channels of N (N is a positive integer greater than 1, and preferably N is equal to 8) carrier data resource pools, and the terminal selects a feedback resource in a feedback resource pool for reporting HARQ-ACK information; the feedback resource pool is located on the same carrier wave of the terminal receiving data.
Here, for example, two carriers are aggregated on the side link, a data resource of a side link downlink control channel received by the terminal is located in the first carrier, the carrier where the feedback resource pool is located is the same as the data carrier indicated by the side link downlink control channel, and the corresponding resource is found for sending the side link feedback HARQ-ACK by at least sending the terminal ID, receiving the terminal ID, and the like through implicit mapping from that time.
Fig. 6 is a schematic diagram of embodiment 5, where the feedback resource pool is located in a carrier with a minimum carrier index.
In embodiment 5 of the present application, the feedback resource pool is located on a carrier with a smallest carrier index for a terminal to receive aggregated carrier data, and at this time, the set carrier range is only included in the carrier with the smallest index 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 preferably N is 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 minimum carrier index for the terminal to receive the aggregated carrier data, and the earliest feedback resource pool (the carrier with the minimum carrier index in the figure is the second carrier) which meets the condition of not less than the time parameter minT.
Here, for example, the data resource of the side link aggregation two carrier terminals receiving the side link downlink control channel is located in the first carrier, the feedback resource pool is located on the carrier with the smallest carrier index where the terminal receives the aggregated carrier data, and the corresponding resource index is found through implicit mapping of parameters at least including the sending terminal ID and the receiving terminal ID for sending the side link feedback HARQ-ACK.
Fig. 7 is a diagram illustrating the feedback resource pool located in the subcarrier spacing minimum carrier 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 a terminal to receive aggregated carrier data, and at this time, the set carrier range only includes a carrier with a 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 preferably N is equal to 8) carrier data resource pools, and selects feedback resources in the feedback resource pools for reporting HARQ-ACK information; and the feedback resource pool is positioned on the carrier wave with the minimum subcarrier interval for the terminal to receive the aggregated carrier wave data.
Here, for example, a data resource of a side link aggregation two carrier terminal receiving side link downlink control channel is located on a first carrier, and because a feedback resource pool which satisfies a condition of not less than a time parameter minT and is located on the first carrier with a minimum subcarrier interval is selected, a corresponding resource index is found for sending side link feedback HARQ-ACK by implicit mapping of parameters at least including a sending terminal ID and a receiving terminal ID on the first carrier.
Fig. 8 is a flowchart of an embodiment of a method of the present application for a network device.
The embodiment of the method for network equipment can comprise the following steps 201-202:
when the mobile communication system comprises network equipment and at least 2 terminal equipment, wherein side link information transmission and feedback are carried out between the first terminal equipment and the second terminal equipment, the network equipment can be used for sending indication information to the first terminal equipment and the second terminal equipment, so that the protocols of the first terminal equipment and the second terminal equipment are consistent.
Step 201, sending first indication information, where the first indication information is used to determine a location of the feedback resource pool.
Regarding the method for determining the feedback resource pool by using the first indication information, see step 102 and embodiments 1 to 6 of the embodiment of the present application.
One way of applying the first indication information is to indicate a method for determining a location of a feedback resource pool, so that the first terminal device or the second terminal device implicitly determines a specific location 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.
For the method for determining the feedback resource pool by using the second indication information, see step 103 in this embodiment of the present application.
Further preferably, the second indication information includes a sending end identifier and a receiving end identifier of the side link data channel.
One way of using the second indication information is to indicate a method for determining an index of a 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 to apply 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 of the present application for a terminal device.
When the mobile communication system comprises a network device and at least 2 terminal devices, wherein side link information transmission and feedback are performed between a first terminal device and a second terminal device, an embodiment of the method for the terminal devices according to the present 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 communications network, psch transmissions occur between mobile terminals, e.g., a second mobile terminal transmits a sidelink data channel (psch) on a data resource pool of a first carrier; a first mobile terminal receives a side link data channel (psch) on 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.
And the network equipment or at least one terminal equipment sends the first indication information, and the at least one terminal equipment receives the first indication information.
For example, the network device sends the first indication information, as described in step 201 of this embodiment; and the first terminal equipment and the second terminal equipment 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 terminal equipment 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 location of a feedback resource pool, so that the first terminal device or the second terminal device implicitly determines a specific location 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 indication information;
the second indication information is used for determining an index of the feedback resource in the feedback resource pool.
And the network equipment or at least one terminal equipment sends the second indication information, and the at least one terminal equipment receives the second indication information.
For example, the network device sends the second indication information, as described in step 202 in this embodiment of the present application; and the first terminal equipment and the second terminal equipment 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.
Any terminal device 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 using the second indication information is to indicate a method for determining an index of a 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, arranging the carrier coefficients in an ascending order, wherein the carrier coefficients are configured by a high-level signaling; then arranging according to PRB coefficients in ascending order; and then arranged in ascending order according to the coefficients of the cyclic shift pair. And finding the corresponding resource index for sending the side link feedback HARQ-ACK through implicit mapping of parameters at least comprising the ID of the sending terminal and the ID of the receiving terminal.
Another way to apply 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.
An embodiment of the present application further provides a network device, where, using the method according to any one of the embodiments of the present application, the network device is configured to:
and determining and sending the first indication information, and/or determining and sending the second indication information.
In order to implement the above technical solution, the 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 a special signaling or broadcast 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 configured to receive uplink control information or uplink data, and is further configured to receive a random access request and a connection request.
The specific method for implementing the functions of the network sending module, the network determining module, and the network receiving module is described in the embodiments of the methods shown in fig. 1 to 9, and will not be described herein again.
Fig. 11 is a schematic diagram of an embodiment of a terminal device.
The present application further provides a terminal device, which uses the method of any one of the embodiments of the present application, and is configured to:
determining a data resource pool of a first carrier, which is used for transmitting a side link data channel;
after the side link data channel is finished, determining the earliest feedback resource which is not less than the first time parameter in a set carrier wave range and is used for transmitting side link feedback information;
the location of the feedback resource is indexed in a feedback resource pool, which is a set of feedback resource configurations for 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 in a data resource pool of a first carrier; sending side link feedback information through the feedback resources; or, sending an edge link data channel in a data resource pool of the first carrier; and receiving side link feedback information through the feedback resources.
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 foregoing technical solution, an apparatus (or terminal apparatus) 500 provided in the present application includes a terminal sending module 501, a terminal determining module 502, and a terminal receiving module 503.
And the terminal receiving module is used for receiving 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 configured to receive the PSSCH, and further may be configured to receive first indication information and/or second indication information. When the device is used for a second terminal device, the terminal receiving module is configured to receive the PSFCH, 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 is further configured to determine an index of the feedback resource (i.e., the location of the feedback resource in the feedback resource pool).
And the terminal sending module is used for sending 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 sending module is configured to send the PSFCH, and further, may be configured to send first indication information and/or second indication information; when the device is used for the second terminal device to perform receiving, the terminal receiving module is configured to send the PSSCH, and further, may be further configured to send the first indication information and/or the second indication information.
The specific method for implementing the functions of the terminal sending module, the terminal determining module and the terminal receiving module is described in the embodiments of the methods shown in fig. 1 to 9 of the present application, and is not described herein again.
The terminal equipment can be mobile terminal equipment.
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. including a transmitter and a receiver, providing means for communicating with various other apparatus over a transmission medium. The wireless interface implements a communication function with the terminal device, and processes wireless signals through the receiving and transmitting devices, 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 to 6 of the present application, which is run or changed 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 herein.
Fig. 13 is a block diagram of a terminal device of 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 the terminal device 700 are coupled together by a bus system. A bus system is used to enable connection 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, a keyboard, or a pointing device, such as a mouse, a trackball, a touch pad, or a touch screen, among others.
The memory 702 stores executable modules or data structures. The memory may have stored therein an operating system and an application program. The operating system includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, and is used for implementing various basic services and processing hardware-based tasks. The application programs include various application programs such as a media player, a browser, and the like for implementing various application services.
In the embodiment of the present invention, the memory 702 contains a computer program for executing any one of the embodiments of fig. 1 to 9 of the present application, and the computer program runs or changes on the processor 701.
The memory 702 contains a computer readable storage medium, and the processor 701 reads the information in the memory 702 and combines the hardware to complete the steps of the above-described method. In particular, the computer-readable storage medium has stored thereon a computer program which, when executed by the processor 701, performs the steps of the method embodiments as described above with reference to any one of the embodiments of fig. 1 to 6.
The processor 701 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the method of the present application may be implemented by hardware integrated logic circuits in the processor 701 or by instructions in the form of software. 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, discrete gate or transistor logic, discrete hardware components. The various methods, steps and logic blocks disclosed 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 directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor.
As will be appreciated by one skilled in the art, 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 a typical configuration, the device of the present application includes one or more processors (CPUs), an input/output user interface, a network interface, and a 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.
The present application therefore also proposes a computer-readable medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of the embodiments of the present application. For example, the memory 603, 702 of the present invention may include volatile memory in a computer readable medium, Random Access Memory (RAM) and/or nonvolatile memory such as Read Only Memory (ROM) or flash memory (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 computer storage media 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 that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
Based on the embodiments of fig. 10 to 13, the present application further provides a mobile communication system, which includes at least 1 embodiment of any terminal device in the present application and/or at least 1 embodiment of any network device in 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 an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
It should be noted that the terms "first", "second", and "third" in the present application are used for distinguishing a plurality of objects having the same name, and are not intended to indicate the size or order, and have no other special meaning unless otherwise specified.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims (14)

1. A method for determining side link feedback resources is used for carrier aggregation communication of the Internet of vehicles, and is characterized by comprising the following steps:
a data resource pool of a first carrier is used to transmit a sidelink data channel (PSSCH);
after the side link data channel is finished, transmitting side link feedback information (PSFCH) by using the earliest feedback resource which is not less than the first time parameter within 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 for at least one carrier.
2. The method of claim 1,
the set carrier range is at least one of the following:
a first carrier wave;
n carriers for realizing carrier aggregation, wherein the N carriers comprise a first carrier;
indexing the carrier with the minimum index from the N carriers for realizing the carrier aggregation;
the carrier with the minimum subcarrier spacing is selected from the N carriers for realizing the carrier aggregation;
and any M carriers (M is less than or equal to N) in the N carriers for realizing the carrier aggregation.
3. The method of claim 1,
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 time of sending the feedback resource which is not less than the first time parameter after the end of the side link data channel.
4. The method of claim 3,
the feedback resource pool further comprises feedback resource allocation of the first carrier or the 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.
5. The method of claim 1,
the indexes of the feedback resources in the feedback resource pool are sorted according to the priority of the following parameters:
firstly, arranging according to the ascending order of carrier indexes;
then, arranging according to PRB coefficients in the carrier wave in an ascending order;
and finally, arranging the coefficients according to the cyclic shift pairs in an ascending order.
6. The method of claim 1,
and determining the index of the feedback resource in the feedback resource pool according to the second indication information.
7. The method of claim 6,
the second indication information comprises the sending end identification and/or the receiving end identification of the side link data channel.
8. The method according to any of claims 1 to 7, for 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 in a data resource pool of a first carrier;
and sending the side link feedback information through the feedback resource.
9. The method according to any of claims 1 to 7, 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.
10. An apparatus for determining side link feedback resources, the method according to any one of claims 1 to 7,
determining a data resource pool of a first carrier, which is used for transmitting a side link data channel;
after the side link data channel is finished, determining the earliest feedback resource which is not less than the first time parameter in a set carrier wave range and is used for transmitting side link feedback information;
the location of the feedback resource is indexed in a feedback resource pool, which is a set of feedback resource configurations for at least one carrier.
11. The apparatus of claim 10,
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 in a data resource pool of a first carrier;
and sending the side link feedback information through the feedback resource.
12. The apparatus of claim 10,
and sending first indication information, wherein the first indication information is used for determining the position of the feedback resource pool.
13. An apparatus for data transmission, comprising: memory, processor and computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, carries out the steps of the method according to any one of claims 1 to 9.
14. A computer-readable medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 9.
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