CN113285785B - Method and device for indicating cooperation information of side link communication terminal device - Google Patents

Method and device for indicating cooperation information of side link communication terminal device Download PDF

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CN113285785B
CN113285785B CN202110361298.9A CN202110361298A CN113285785B CN 113285785 B CN113285785 B CN 113285785B CN 202110361298 A CN202110361298 A CN 202110361298A CN 113285785 B CN113285785 B CN 113285785B
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resource
information
psfch
pssch
resources
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CN113285785A (en
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王志勤
沈霞
杜滢
闫志宇
焦慧颖
刘晓峰
魏贵明
徐菲
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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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Priority to PCT/CN2022/070500 priority patent/WO2022206095A1/en
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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
    • 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
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • 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

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

Abstract

The application discloses a method for indicating cooperation information of side link communication terminal equipment, which comprises the following steps: determining a standby PSFCH resource set corresponding to the PSSCH, wherein the standby PSFCH resource set comprises special resources used for sending cooperation information; the dedicated resource occupies a resource position different from a PSFCH resource used for sending HARQ information in PSFCH resources configured by the system; and according to a special resource index, indicating the position of a special resource in the standby PSFCH resource set, wherein the cooperation information is used for indicating that the transmission resources occupied by PSSCH transmitted by the first terminal equipment and the second terminal equipment have conflict or indicating HARQ retransmission information transmitted by the third terminal equipment. The application also includes a device implementing the method. The method and the device solve the problem that the prior art cannot send the cooperation information.

Description

Method and device for indicating cooperation information of side link communication terminal device
Technical Field
The present application relates to the field of mobile communications technologies, and in particular, to a method and an apparatus for indicating cooperative communication between terminal devices in an application scenario of edge link communication.
Background
In the inter-terminal communication, the terminal a is required to send cooperation information to the terminal B to help the terminal B select a proper transmission resource and avoid resource collision with other terminals. Terminal a may be a destination receiving terminal to which terminal B transmits information, or may be another terminal. It is possible that the terminal a sends the cooperation information to the terminal B may be carried by Sidelink Control Information (SCI), MAC CE, PC5-RRC, or PSFCH. The PSFCH has the advantage of low time delay when bearing the cooperation signaling, and simultaneously, the terminal supporting the non-channel interception function provides the cooperation information for other terminals.
The specific design method of the PSFCH channel for communication between the current terminals is to configure periodic PSFCH resources for a resource pool through high-level signaling, and then establish a mapping relationship between the PSFCH resources on a time slot and sub-channels on a plurality of time slots, so that each sub-channel on each time slot is mapped into a group of PSFCH resources.
The current PSFCH resource design is only suitable for the terminal to feed back 1bit of HARQ information. How to send the cooperation information has no solution at present.
Disclosure of Invention
The application provides a method and equipment for indicating cooperation information of side link communication terminal equipment, and aims to solve the problem that cooperation information cannot be sent in the prior art.
The embodiment of the application provides a method for indicating the cooperation information of side link communication terminal equipment, which comprises the following steps:
determining a standby PSFCH resource set corresponding to the PSSCH, wherein the standby PSFCH resource set comprises special resources used for transmitting the cooperation information; the special resource occupies a resource position different from a PSFCH resource used for sending HARQ information in the PSFCH resources configured by the system;
indicating the location of the dedicated resources in the standby PSFCH resource set according to the dedicated resource index,
the cooperation information is used to indicate that there is a conflict in transmission resources occupied by the PSSCH sent by the first terminal device and the second terminal device, or indicate HARQ retransmission information sent by the third terminal device.
Preferably, the dedicated resource index includes a mapping relationship between the PSSCH and the dedicated resource.
Preferably, the collaboration information includes at least one of the following information:
HARQ information of PSSCH is transmitted repeatedly;
PSSCH resource conflict indication information;
and indication information of reserved PSSCH resource conflict.
As an alternative embodiment of the present application, the standby PSFCH resource set occupies a different resource location from a PSFCH resource set used for transmitting HARQ information in a PSFCH resource configured by the system.
The different resource locations satisfy at least one of the following characteristics: different time slots; different frequency bands; different symbols of the same slot; different cyclic offsets.
As another alternative embodiment of the present application, the reserved PSFCH resource set is a subset of a set of PSFCH resources used for transmitting HARQ information in the system-configured PSFCH resources;
the special resource and the resource for transmitting the HARQ information correspond to different sub-channels of PSSCH, and the index of the special resource is
Figure BDA0003005648570000021
Wherein
Figure BDA0003005648570000022
Number of reserved PSFCH resources for transmitting cooperation information, P, corresponding to PSSCHIDFor transmitting terminal ID, MIDTo receive the terminal device ID.
Or, the dedicated resource and the resource for transmitting the HARQ information correspond to the same sub-channel or different sub-channels of the PSSCH, and the index of the dedicated resource is
Figure BDA0003005648570000023
Wherein
Figure BDA0003005648570000024
Number of reserved PSFCH resources for transmitting cooperative information, P, corresponding to PSSCHIDFor transmitting terminal ID, MIDTo receive the terminal device ID, O is an offset.
In a multicast scenario, with any one of the method embodiments of the present application, further, the number of the standby PSFCH resource sets is multiple. Preferably, in at least one embodiment of the present application, the offset amount is plural.
Preferably, in any embodiment of the present application, the PSSCH resource conflict indication information and HARQ information jointly indicate that there is no resource conflict when the PSSCH resource conflict indication information is in default; when the PSSCH resource conflict indication information is NACK, indicating that resource conflict exists; and when the HARQ information is lacked, indicating that the PSSCH is not correctly received.
Further, a method according to any embodiment of the present application, applied to a terminal device, includes the following steps:
the terminal equipment detects transmission resources occupied by data sent by the first terminal and the second terminal equipment and determines whether a conflict exists;
the terminal equipment determines the special resource according to the acquired indication information for determining the standby PSFCH resource set and the special resource index;
and the terminal equipment determines the specific content indicated in the cooperation information and sends the cooperation information to the first terminal and/or the second terminal through the special resource.
Further, the indication information for determining the standby PSFCH resource set and the dedicated resource index includes at least one of the following: subchannel parameters, offset parameters.
The present application further proposes a communication device comprising: 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 present application.
The present application 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.
The embodiment of the application adopts at least one technical scheme which can achieve the following beneficial effects:
the method supports the terminal to adopt the PSFCH channel to send the cooperation information of the communication between the terminals, and is beneficial to reducing the sending time delay and the resource overhead of the cooperation information. Meanwhile, the method does not affect PSFCH resources used for sending the HARQ information, and the PSFCH resource overhead can be further reduced through the design of the combined content of the HARQ information and the cooperation information.
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 side link communication resource conflict scenario 1;
fig. 2 is a side link communication resource conflict scenario 2;
FIG. 3 is a flow chart of an embodiment of the method of the present invention;
FIG. 4 is a diagram illustrating a mapping relationship between side link signaling resources and PSSCH;
FIG. 5 is a diagram of dedicated resources when the first subset and the second subset are not simultaneous;
FIG. 6 is a diagram of dedicated resources for which the first subset and the second subset are the same;
fig. 7 is a schematic diagram illustrating a plurality of dedicated psch resource sets defined in a multicast scenario;
FIG. 8 is a flowchart of an embodiment of a method of the present application for a terminal device;
fig. 9 is a schematic structural diagram of the terminal device 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 a few embodiments of the present application, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
The invention provides a method and a device for indicating cooperative communication between terminal devices, which are applied to side link communication, and the method mainly comprises the following steps:
and the terminal determines the PSFCH resource for transmitting the cooperation information, wherein the method for determining the PSFCH resource is to avoid the conflict between the resource for transmitting the cooperation information and the resource for transmitting the HARQ information. Determining the PSFCH resources at different positions from the PSFCH resources originally sending the HARQ information in the PSFCH resources configured by the original system to be used for sending the cooperation information, or determining that the PSFCH resources bound with the PSSCH resources for sending the HARQ information are used for sending the cooperation information by utilizing the newly configured PSFCH resources. Furthermore, the terminal determines the specific content indicated in the cooperation information, and the specific content and the HARQ information corresponding to the PSSCH are jointly designed to reduce the overhead of the PSFCH resource.
The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.
Utilizing the PSFCH to carry the collaboration information may be applicable to the following scenarios:
fig. 1 is a side link communication resource collision scenario 1. The terminal A is a receiving terminal for the terminal B and the terminal C to send data, the terminal A detects that the transmission resources occupied by the terminal B and the terminal C to send data to the terminal A generate conflict, and the terminal B can be enabled to carry out resource reselection by sending cooperation information to the terminal B through the PSFCH to indicate the conflict.
Fig. 2 is a side link communication resource collision scenario 2. The terminal A is a peripheral terminal of the terminal B and the terminal C, the terminal A detects that the transmission resources occupied by the data sent by the terminal B and the terminal C to the terminal D generate conflict through channel monitoring, and sends cooperation information to the terminal B through the PSFCH to indicate the conflict, so that the terminal B performs resource reselection.
FIG. 3 is a flow chart of an embodiment of the method of the present invention.
The embodiment of the application provides a method for indicating the cooperation information of side link communication terminal equipment, which comprises the following steps of 101-103:
step 101, determining a standby PSFCH resource set corresponding to the PSSCH, including dedicated resources for transmitting the cooperation information.
The cooperation information is used to indicate that there is a conflict in transmission resources occupied by the PSSCH sent by the first terminal device and the second terminal device, or indicate HARQ retransmission information sent by the third terminal device.
Wherein the dedicated resource for transmitting the cooperation information is different from the resource for transmitting the HARQ information. On this premise, the standby PSFCH resource set occupies a different resource location from the PSFCH resource set used for transmitting HARQ information in the system-configured PSFCH resources, or the standby PSFCH resource set is a subset of the PSFCH resource set used for transmitting HARQ information in the system-configured PSFCH resources.
As an alternative embodiment of the present application, the standby PSFCH resource set has a corresponding relationship with a resource location of a traffic channel PSSCH corresponding to the cooperation information, and occupies a different resource location from a PSFCH resource set used for transmitting HARQ information in a PSFCH resource configured by the system. The different resource locations satisfy at least one of the following characteristics: different time slots; different frequency bands; different symbols of the same slot; same symbol and frequency band, different cyclic offsets. The different resource locations may configure, in a manner that the system newly configures the PSFCH resource, the PSFCH resource in a resource location different from the PSFCH resource used for transmitting the HARQ information, for transmitting the cooperation information.
As another alternative embodiment of the present application, the reserved PSFCH resource set has a corresponding relationship with a resource location of a traffic channel PSSCH corresponding to the cooperation information, and is a subset of a PSFCH resource set configured by the system for transmitting HARQ information, and is the first subset. The set of PSFCH resources corresponding to the PSSCH traffic channel for actually transmitting HARQ information is also a subset of the set of PSFCH resources configured by the system for transmitting HARQ information, which is the second subset. The first subset is different from, or the same as, the second subset. The first subset and the second subset are different, and the first subset and the second subset occupy different resource positions, and the different resource positions satisfy at least one of the following characteristics: different time slots; different frequency bands; different symbols of the same slot; same symbol and frequency band, different cyclic offsets. Further, the first subset is different from the second subset, and a PSFCH resource set corresponding to a different subchannel among subchannels occupied by the PSSCH may be respectively used as a PSFCH set corresponding to the PSSCH and used for transmitting the cooperation information, and a PSFCH resource set corresponding to the PSSCH and used for transmitting the HARQ information. The first subset is the same as the second subset, and thus the PSFCH resource sets corresponding to the same one or more sub-channels in the sub-channels occupied by the PSSCH are used as the PSFCH set corresponding to the PSSCH and used for transmitting the cooperation information and the PSFCH resource set corresponding to the PSSCH and used for transmitting the HARQ information.
And 102, determining a special resource position for transmitting the cooperation information corresponding to the PSSCH in the standby PSFCH resource set according to the special resource index.
In the standby PSFCH resource set, a dedicated resource position for transmitting the cooperation information corresponding to the PSSCH and a PSFCH resource for transmitting the HARQ information corresponding to the PSSCH occupy a different resource position.
Preferably, the dedicated resource index includes a mapping relationship between the psch and the dedicated resource.
If the standby PSFCH resource set is a subset of the PSFCH resource set used for transmitting HARQ information in the PSFCH resources configured by the system, the mapping relationship between the traffic channel PSSCH and the corresponding PSFCH resource for transmitting the cooperation information proposed in the present application is as follows:
the dedicated resource index is
Figure BDA0003005648570000071
Wherein
Figure BDA0003005648570000072
The number of dedicated resources in the reserved PSFCH resource set for transmitting the cooperation information corresponding to the PSSCH, wherein PIDSending terminal device ID, M provided in sidelink control information for the originating UE of PSSCHIDThe PSSCH is used to receive the terminal device ID, which also typically refers to the member ID of the terminating UE in the multicast scenario, with O being the offset. The offset O may take the value 0 when the first subset is different from the second subset.
Further optionally, for a multicast communication scenario, M may exist in the ACK/NACK feedback scenario of all multicast membersID1＝MID2+ O, if the candidate PSFCH resource set for transmitting HARQ information is the same as the candidate PSFCH resource set for transmitting cooperation information, the HARQ information and the cooperation information are transmitted in the same timeGenerating MID1HARQ information and M for PSSCH detection feedbackID1For the collision of the cooperative information sent by PSSCH, the requirement that the offset O is greater than the number of group members can be configured, namely O is greater than or equal to max (M)ID) The occurrence of such collisions is reduced.
And 103, transmitting the cooperation information.
Preferably, the content of the collaboration information includes at least one of the following information:
the HARQ information of the PSSCH is repeatedly transmitted, namely the HARQ information corresponding to the PSSCH is repeatedly transmitted;
the PSSCH resource collision indication information may be used to indicate: resource conflict exists, the type, quantity or identification of the conflicted resources suggests or requires resource reselection;
the indication information of the reserved PSSCH resource conflict can be used for indicating that: resource conflict exists, the type, quantity or identification of the conflicted resources suggests or requires resource reselection; the reserved PSCCH resource herein refers to a reserved PSCCH resource indicated by a PSCCH corresponding to the PSCCH.
The specific cooperation information indicates which type of information described above can be indicated by higher layer signaling or SCI.
Further alternatively, the cooperation information indicates which type of information mentioned above may also be related to the total number of cooperation information bits.
For example, the cooperative information is only 1bit and is the repeated transmission of the HARQ information corresponding to the psch. If the HARQ information corresponding to the PSSCH is ACK, the 1-bit information is corresponding to ACK, and if the HARQ information corresponding to the PSSCH is NACK, the 1-bit information is corresponding to NACK. If only NACK information is fed back corresponding to the PSSCH, the 1-bit information is corresponding to NACK only when the HARQ information is NACK. If the 1bit information is the corresponding PSSCH resource conflict condition:
further optionally, the specific content of the cooperation information and the HARQ information corresponding to the PSSCH are jointly designed, so as to reduce the overhead of the PSFCH resource.
The cooperation information is only 1bit information, and is an example of the corresponding PSSCH resource conflict indication. Generally speaking, the cooperative information feeds back NACK when the corresponding psch resource conflicts, otherwise, feeds back ACK. When the design is combined with HARQ information, the PSFCH resource overhead can be reduced.
For example, when the PSSCH resource conflict indication information is in default, no resource conflict is represented; when the PSSCH resource conflict indication information is NACK, indicating that the resource conflict exists; and when the HARQ information is lacked, indicating that the PSSCH is not correctly received.
For example, the joint design as shown in the following table can be performed.
Combined indication of table 1, PSSCH HARQ information and PSSCH resource collision information
Figure BDA0003005648570000081
Further optionally, when the cooperation information includes multiple bits of information, if resource collision is indicated, the method may be used for indicating a plurality of reserved PSCCH resource collision situations indicated by a PSCCH corresponding to the psch, or for indicating a time-frequency domain collision situation of the psch, such as an identifier, a category, a number, and the like of collision resources, and further, may also indicate a transmitting terminal receiving the cooperation information to reselect resources of which one or a group of subchannels is/are used for the psch. For example, 2-bit cooperation information, it is detected that the 1 st bit is NACK, and when the 2 nd bit is not transmitted, it indicates resource collision and indicates that time domain or frequency domain reselection is possible; when the 1 st bit is detected to be NACK, and the 2 nd bit is sent to be NACK, the resource conflict is represented and the time domain reselection is represented; when the 1 st bit is detected to be NACK and the 2 nd bit is sent to be ACK, the resource conflict is shown and the frequency domain reselection is shown. Yet another example is 2-bit cooperation information, "00" indicates a PSSCH 1 st or 1 st group subchannel resource collision; "01" indicates PSSCH 2 nd or group 2 subchannel resource collision; "10" indicates a PSSCH 3 rd or 3 rd group sub-channel resource collision; "11" indicates a PSSCH 4 th or 4 th group subchannel resource collision.
The transmission of the PSFCH resource may be reduced through the design of the content of the collaboration information, and for a specific reduction method, reference may be made to the example, and details are not described here.
Fig. 4 is a diagram illustrating the mapping relationship between the side link signaling resource and the psch.
Here, the "sidelink signaling resource" refers to a PSFCH resource used for transmitting HARQ information or a PSFCH resource used for transmitting cooperation information.
According to the existing standard 3GPP TS 38.213, a specific method for designing a PSFCH channel for current inter-terminal communication is to configure a periodic PSFCH resource for a resource pool through a high-level signaling, then establish a mapping relationship between the PSFCH resource on a time slot and sub-channels on multiple time slots, map each sub-channel on each time slot to a set of PSFCH resources, determine a PSFCH candidate resource corresponding to a traffic channel PSSCH, that is, a first sub-channel occupied by the PSSCH or a PSFCH resource corresponding to all sub-channels occupied by the PSSCH, and then determine HARQ information of 1bit fed back by the PSFCH resource according to a transmitting terminal ID of the PSSCH and a group member ID of a receiving terminal, as shown in fig. 4.
The specific way of determining the second subset in the PSFCH resources configured by the system is as follows: according to the PSFCH resources configured by the system, the number of PRBs occupied by the PSFCH resources configured on one time slot is assumed to be
Figure BDA0003005648570000091
And
Figure BDA0003005648570000092
n on a time slotsubchSub-channel association, i.e. each sub-channel will correspond to
Figure BDA0003005648570000093
A PSFCH PRB. Corresponding to j sub-channel on ith time slot
Figure BDA0003005648570000094
A PSFCH PRB in
Figure BDA0003005648570000095
In a position of
Figure BDA0003005648570000096
Figure BDA0003005648570000097
Wherein
Figure BDA0003005648570000098
j＝1,2,3,…,Nsubch. Since the PSFCH is generated based on the sequence, the resource multiplexing can also be performed by means of cyclic shift, assuming that the cyclic shift pair multiplexed on one PSFCH PRB is
Figure BDA0003005648570000101
The number of PSFCH resources in the candidate PSFCH resource set corresponding to one sub-channel is actually equal to
Figure BDA0003005648570000102
The number of candidate PSFCH resources for transmitting HARQ information corresponding to one traffic channel PSSCH is:
Figure BDA0003005648570000103
if the candidate PSFCH resource is used for transmitting HARQ information, wherein
Figure BDA0003005648570000104
The value is 1 or the number of subchannels occupied by the psch for a parameter configured by the higher layer. If the value is 1, the candidate PSFCH resource corresponding to the service channel PSSCH is a candidate PSFCH resource set corresponding to a first sub-channel occupied by the PSSCH; if the value is the number of the sub-channels occupied by the PSSCH, the candidate PSFCH resource set corresponding to the service channel PSSCH is the union set of the candidate PSFCH resource sets corresponding to all the sub-channels occupied by the PSSCH.
The specific way of determining the first subset in the PSFCH resources configured by the system is as follows: according to the PSFCH resources configured by the system, the number of PRBs occupied by the PSFCH resources configured on one time slot is assumed to be
Figure BDA0003005648570000105
And with
Figure BDA0003005648570000106
N on a time slotsubchSub-channel association, i.e. each sub-channel will correspond to
Figure BDA0003005648570000107
A PSFCH PRB. Corresponding to j sub-channel on ith time slot
Figure BDA0003005648570000108
PSFCH PRB
Figure BDA0003005648570000109
PRB positions in
Figure BDA00030056485700001010
Figure BDA00030056485700001011
Wherein
Figure BDA00030056485700001012
j＝1,2,3,…,Nsubch. Since the PSFCH is generated based on the sequence, the resource multiplexing can also be performed by means of cyclic shift, assuming that the cyclic shift pair multiplexed on one PSFCH PRB is
Figure BDA00030056485700001013
The number of candidate PSFCH resources corresponding to one sub-channel is actually equal to
Figure BDA00030056485700001014
Therefore, the number of dedicated resources in the standby PSFCH resource set for transmitting the cooperation information corresponding to one traffic channel PSSCH is:
Figure BDA00030056485700001015
wherein the parameters
Figure BDA00030056485700001016
For configuring parameters, for definingAnd sending the number of the special resources in the standby PSFCH resource set in the cooperation information. According to whether the first subset and the second subset are the same or not, corresponding
Figure BDA00030056485700001017
And with
Figure BDA00030056485700001018
The values are the same or different and are greater than or equal to 1. If the first subset is different from the second subset, the PSSCH occupies the number of sub-channels
Figure BDA0003005648570000111
If the PSSCH occupies the PSFCH resource set corresponding to the first sub-channel in the sub-channels and corresponding to the PSFCH resource set corresponding to the PSSCH for transmitting the HARQ information, that is, if the PSFCH resource set corresponding to the first sub-channel in the sub-channels is larger than 1, the PSSCH occupies the PSFCH resource set corresponding to the PSSCH for transmitting the HARQ information, that is
Figure BDA0003005648570000112
And is
Figure BDA0003005648570000113
In which case the first subset may be different from the second subset, the parameters
Figure BDA0003005648570000114
And the above
Figure BDA0003005648570000115
Configurable to different parameters; otherwise, the first subset is the same as the second subset, and the parameters are the same
Figure BDA0003005648570000116
And the above
Figure BDA0003005648570000117
The same parameter means the same value. Further, the terminal can obtain the SCI through a high-level signaling or a side link control signaling
Figure BDA0003005648570000118
The value of (a).
If it is notParameter(s)
Figure BDA0003005648570000119
With the above parameters
Figure BDA00030056485700001110
If the parameters are the same, that is, the parameters are represented by one configuration parameter, the set of candidate PSFCH resources for transmitting the cooperation information corresponding to the traffic channel pscch is the same as the set of candidate PSFCH resources for transmitting the HARQ information corresponding to the traffic channel pscch. At this time, the process of the present invention,
Figure BDA00030056485700001111
the value is 1 or the number of subchannels occupied by the psch. If the value is 1, the candidate PSFCH resource set corresponding to the service channel PSSCH and used for sending the cooperation information is a candidate PSFCH resource set corresponding to a first sub-channel occupied by the PSSCH; and if the value is the number of the sub-channels occupied by the PSSCH, the candidate PSFCH resource for sending the cooperation information corresponding to the service channel PSSCH is a candidate PSFCH resource set corresponding to all the sub-channels occupied by the PSSCH.
Fig. 5 is a schematic diagram of the first subset being different from the second subset.
At this time
Figure BDA00030056485700001112
And with
Figure BDA00030056485700001113
As two configuration parameters which are independent of each other, there are
Figure BDA00030056485700001114
Figure BDA00030056485700001115
It can be interpreted that the candidate PSFCH resource set for transmitting HARQ information corresponding to the traffic channel psch is the candidate PSFCH resource set corresponding to the first sub-channel occupied by the traffic channel psch, and the candidate PSFCH resource set for transmitting cooperation information corresponding to the traffic channel psch is the first candidate PSFCH resource set occupied by the traffic channel pschOutside of sub-channels
Figure BDA00030056485700001116
Candidate PSFCH resource sets corresponding to sub-channels, e.g. occupied
Figure BDA00030056485700001117
And candidate PSFCH resource sets corresponding to the sub-channels.
As shown in fig. 5, for example, assume that the psch occupies 3 sub-channels,
Figure BDA00030056485700001118
and
Figure BDA00030056485700001119
the parameters are different, the candidate PSFCH resource set used for transmitting HARQ information corresponding to the traffic channel PSSCH is a candidate PSFCH resource set corresponding to a first sub-channel (i.e., sub-channel 1) occupied by the traffic channel PSSCH, and the candidate PSFCH resource set used for transmitting cooperation information corresponding to the traffic channel PSSCH is a candidate PSFCH resource set corresponding to 2 rd to 3 rd sub-channels (i.e., sub-channel 3 and sub-channel 4) occupied by the traffic channel PSSCH.
Fig. 6 is a schematic diagram illustrating the determining of the location of the PSFCH resource for transmitting the cooperation information in the same scenario as the first subset and the second subset.
The specific way that the terminal determines the PSFCH special resource for sending the cooperation information according to the terminal ID in the standby PSFCH resource set for sending the cooperation information is as follows:
terminal in standby PSFCH resource set
Figure BDA0003005648570000121
The resource index of the PSFCH resource selected for sending the cooperation information in the PSFCH resources is
Figure BDA0003005648570000122
Wherein P isIDSending terminal ID, M provided in sidelink control information for originating UEIDIs member ID, M, of the receiving UEIDOnly for each receiving terminal in a multicast scenarioAnd feeding back ACK/NACK information, wherein O is an offset used for distinguishing PSFCH resources for transmitting HARQ information. Wherein, the terminal can obtain the value of O through a high-level signaling or a side link control signaling SCI.
For example, as shown in FIG. 6, assuming that the first subset is the same as the second subset, the parameters
Figure BDA0003005648570000123
And the above
Figure BDA0003005648570000124
And taking the number of the sub-channels occupied by the PSSCH as the same parameter. According to the formula
Figure BDA0003005648570000125
Figure BDA0003005648570000126
The determined location of the PSFCH resource for transmitting HARQ information in the candidate resource set (second subset) is shown in fig. 6 according to the formula
Figure BDA0003005648570000127
The determined PSFCH resources for transmitting the cooperation information are located in the candidate resource set (first subset) with an offset O from the PSFCH resources for transmitting the HARQ information.
Further optionally, if the first subset and the second subset are different, that is, the PSFCH set corresponding to the PSSCH and used for transmitting the cooperation information, the PSFCH resource set corresponding to the PSSCH and used for transmitting the HARQ information, and the PSFCH resource sets corresponding to different subchannels occupied by the PSSCH are used, and the dedicated resource index may be a set of PSFCH resources corresponding to different subchannels occupied by the PSSCH
Figure BDA0003005648570000128
Wherein
Figure BDA0003005648570000129
Number of dedicated resources, P, in a reserved PSFCH resource set for transmitting cooperation information corresponding to PSSCHIDTransmission provided in sidelink control information for originating UETerminal ID, MIDIs member ID, M, of the receiving UEIDOnly for scenarios where each receiving terminal needs to feed back ACK/NACK information in a multicast scenario.
Further optionally, if the set of standby PSFCH resources is on the newly configured PSFCH resources in step 101, the mapping relationship between the traffic channel PSSCH and the corresponding PSFCH resource for transmitting the cooperation information may multiplex the mapping relationship between the traffic channel PSSCH and the corresponding PSFCH resource for transmitting the HARQ information. It should be noted that, if the newly configured PSFCH resource does not carry the HARQ information, it is not necessary to limit that the PSFCH resource for transmitting the cooperation information corresponding to the traffic channel PSSCH and the PSFCH resource for transmitting the HARQ information use different PSFCH resources.
With reference to the foregoing embodiments, according to steps 101 to 102, further optionally, multiple parameters may be configured
Figure BDA0003005648570000131
And/or a plurality of offsets O are used for indicating a plurality of PSFCH resources and are used for indicating the cooperation information above 1 bit.
1) For configuring a plurality of parameters
Figure BDA0003005648570000132
Further description of (1) is as follows: for example, T (T is an integer greater than or equal to 1) parameters are configured
Figure BDA0003005648570000133
Are respectively as
Figure BDA0003005648570000134
Corresponding to T spare PSFCH resource sets for transmitting cooperation information respectively, the scenario is only applicable to the first subset and the second subset being different, namely
Figure BDA0003005648570000135
And is
Figure BDA0003005648570000136
The scene of (1), otherwise T ═ 1,
Figure BDA0003005648570000137
and
Figure BDA0003005648570000138
the values are the same and are the same parameter. Suppose that the T (1 ≦ T ≦ T) candidate PSFCH resource set for sending the cooperation information can carry ZtCooperation information of bits, wherein ZtAnd the number of the corresponding offsets O in the tth candidate resource set (T is more than or equal to 1 and less than or equal to T) for sending the cooperation information is shown. The position corresponding to the tth candidate PSFCH resource set for sending the cooperation information can be the tth candidate PSFCH resource set occupied by the PSSCH
Figure BDA0003005648570000139
Candidate PSFCH resource sets corresponding to the subchannels. The number of the PSFCH resources in the tth standby PSFCH resource set is as follows:
Figure BDA00030056485700001310
fig. 7 is a schematic diagram of defining multiple sets of backup PSFCH resources for transmitting collaboration information.
Assuming that, as shown in fig. 7, the psch occupies 3 sub-channels,
Figure BDA00030056485700001311
Figure BDA00030056485700001312
and
Figure BDA00030056485700001313
the parameters are different, the PSFCH resource used for transmitting the HARQ information corresponding to the traffic channel PSSCH is a PSFCH resource corresponding to a first sub-channel (i.e., sub-channel 1) occupied by the traffic channel PSSCH, and the 2 PSFCH resource sets used for transmitting the cooperation information corresponding to the traffic channel PSSCH are respectively a candidate PSFCH resource set corresponding to a 2 nd sub-channel (i.e., sub-channel 2) occupied by the traffic channel PSSCH and a standby PSFCH resource set corresponding to a 3 rd sub-channel (i.e., sub-channel 3) occupied by the traffic channel PSSCH. That isThat is, there are multiple sets of standby PSFCH resources for transmitting the cooperation information, or there are multiple sets of the first subset in the foregoing embodiment.
Further explanation for configuring the plurality of offsets O is as follows: for example, for the T (1 ≦ T ≦ T) candidate PSFCH resource set for sending cooperation information, the configuration ZtEach offset is { O }1,…,OZt}. Terminal sends standby PSFCH resource set of cooperation information in t-th
Figure BDA0003005648570000141
Selecting one of candidate PSFCH resources for transmitting collaboration information
Figure BDA0003005648570000142
The indexes of each PSFCH resource are respectively
Figure BDA0003005648570000143
Wherein
Figure BDA0003005648570000144
Further, T parameters
Figure BDA0003005648570000145
And the T (T is more than or equal to 1 and less than or equal to T) spare PSFCH resource set for sending the cooperation information
Figure BDA0003005648570000146
Z of middle configurationtEach offset is respectively
Figure BDA0003005648570000147
And obtaining through high-layer signaling or SCI information.
Therefore, the total number of PSFCH resources for transmitting the cooperation information according to the configuration by the terminal
Figure BDA0003005648570000148
Each PSFCH may carry 1bit of information, and the total number of bits of the corresponding cooperation information that can be indicated is Q.
Fig. 8 is a flowchart of an embodiment of the method of the present application for a terminal device.
Further, a method according to any embodiment of the present application, applied to a terminal device, includes the following steps:
step 201, the terminal device detects transmission resources occupied by data sent by the first terminal and the second terminal device, and determines whether a conflict exists;
the terminal device is a third terminal, and may be, for example, the terminal a in fig. 1 to 2.
Here, the first terminal may be, for example, terminal B in fig. 1-2; the second terminal may be, for example, terminal C in FIGS. 1-2.
Step 202, the terminal device determines the dedicated resource according to the obtained indication information for determining the reserved PSFCH resource set and the dedicated resource index;
in this step, the third terminal determines that the method of transmitting the PSFCH resource of the cooperation information is the following method 1 or method 2.
Mode 1: and the third terminal determines the PSFCH resources at different positions from the PSFCH resources originally sending the HARQ information in the PSFCH resources configured by the original system to be used for sending the cooperation information.
Mode 2: and the third terminal determines to bind the PSFCH resource with the transmitted PSSCH resource to transmit the cooperation information by using the newly configured PSFCH resource.
Further, the third terminal obtains the indication information for determining the standby PSFCH resource set and the dedicated resource index, where the indication information includes at least one of the following information: subchannel parameters, offset parameters.
The terminal equipment acquires the indication information for determining the standby PSFCH resource set and the dedicated resource index in at least one of the following manners: high layer signaling, physical layer signaling, write device. The high-layer signaling may be high-layer signaling on a communication link between the base station and the terminal or on a side link, the physical-layer signaling may be physical-layer signaling on the communication link between the base station and the terminal or on the side link, and the writing device may directly write the relevant parameters into the device based on a protocol.
Step 203, the terminal device determines the specific content indicated in the cooperation information.
For example, the third terminal can determine specific content in the collaboration information, including at least one of the following:
the HARQ information of the PSSCH is transmitted repeatedly by the third terminal, namely the HARQ information corresponding to the PSSCH is transmitted repeatedly;
the indication information of the psch resource collision between the first terminal and the second terminal may be used to indicate: resource conflict exists, the type, quantity or identification of the conflicted resource suggests or requires resource reselection;
the indication information of the reserved PSSCH resource conflict between the first terminal and the second terminal can be used for indicating that: resource conflict exists, the type, quantity or identification of the conflicted resource suggests or requires resource reselection; the reserved PSCCH resource herein refers to a reserved PSCCH resource indicated by a PSCCH corresponding to the PSCCH.
And step 204, the terminal device sends cooperation information to the first terminal and/or the second terminal through the dedicated resource.
In step 204, the third terminal sends the cooperation information through the dedicated resource.
Fig. 8 is a schematic diagram of an embodiment of the terminal device of the present invention.
The present application further proposes a communication device comprising: memory, a processor and a computer program stored on the memory and executable on the processor, the computer program implementing the steps of the method according to any one of the embodiments of the present application when executed by the processor.
The communication device may be a first terminal, a second terminal or a third terminal, which are collectively referred to as a terminal device.
The terminal device 400 (i.e., UE) includes at least one processor 401, memory 402, a user interface 403, and at least one network interface 404. The various components in the terminal device 400 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 403 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 402 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, and is used for implementing various 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 an embodiment of the present invention, the memory 402 contains a computer program for performing any of the embodiments of the present application, which is run or changed on the processor 401.
The memory 402 contains a computer readable storage medium, and the processor 401 reads the information in the memory 402 and performs the steps of the above method in combination with the hardware thereof. In particular, the computer-readable storage medium has stored thereon a computer program which, when being executed by the processor 401, carries out the steps of the method embodiments as described above with reference to any of the embodiments.
The processor 401 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 integrated logic circuits of hardware or instructions in the form of software in the processor 401. The processor 401 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 303, 402 of the present invention may comprise volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory 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 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. 1 to 9, the present application further provides a mobile communication system including any one of the embodiments of the terminal 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 … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
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 to which the present application pertains. 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 (15)

1. A method for indicating cooperation information of side link communication terminal equipment is characterized by comprising the following steps:
determining a standby PSFCH resource set corresponding to the PSSCH, wherein the standby PSFCH resource set comprises special resources used for transmitting the cooperation information; the dedicated resource occupies a resource position different from a PSFCH resource used for sending HARQ information in PSFCH resources configured by the system;
indicating the location of the dedicated resources in the standby PSFCH resource set according to the dedicated resource index,
the cooperation information is used to indicate that there is a conflict in transmission resources occupied by the PSSCH sent by the first terminal device and the second terminal device, or indicate HARQ retransmission information sent by the third terminal device.
2. The side link communication terminal apparatus cooperation information indication method of claim 1,
the standby PSFCH resource set occupies a resource position different from a PSFCH resource set used for sending HARQ information in PSFCH resources configured by the system.
3. The side link communication terminal apparatus cooperation information indicating method of claim 1,
the dedicated resource index includes a mapping relationship between the PSSCH and the dedicated resource.
4. The side link communication terminal apparatus cooperation information indication method according to claim 1 or 2,
the different resource locations satisfy at least one of the following characteristics:
different time slots;
different frequency bands;
different symbols of the same slot;
different cyclic offsets.
5. The side link communication terminal apparatus cooperation information indication method of claim 1,
the collaboration information comprises at least one of the following information:
HARQ information of PSSCH is transmitted repeatedly;
PSSCH resource conflict indication information;
and indication information of reserved PSSCH resource conflict.
6. The edge-link communication terminal apparatus cooperation information indication method according to claim 5,
the PSSCH resource conflict indication information and HARQ information combined indication indicates that no resource conflict exists when the PSSCH resource conflict indication information is in default; when the PSSCH resource conflict indication information is NACK, indicating that the resource conflict exists; and when the HARQ information is lacked, indicating that the PSSCH is not correctly received.
7. The side link communication terminal apparatus cooperation information indicating method of claim 1,
the standby PSFCH resource set is a subset of a PSFCH resource set used for transmitting HARQ information in system-configured PSFCH resources,
the dedicated resources and the resources for transmitting HARQ information correspond to different subchannels of the psch,
the dedicated resource index is
Figure FDA0003005648560000031
Wherein
Figure FDA0003005648560000032
Number of reserved PSFCH resources for transmitting cooperative information, P, corresponding to PSSCHIDFor transmitting terminal ID, MIDTo receive the terminal device ID.
8. The side link communication terminal apparatus cooperation information indication method of claim 1,
the standby PSFCH resource set is a subset of a set of PSFCH resources used for transmitting HARQ information in system-configured PSFCH resources,
the dedicated resources and the resources for transmitting the HARQ information correspond to different subchannels or the same subchannel of the psch,
the dedicated resource index is
Figure FDA0003005648560000033
Wherein
Figure FDA0003005648560000034
Number of reserved PSFCH resources for transmitting cooperation information, P, corresponding to PSSCHIDFor sending terminal ID, MIDTo receive the terminal device ID, O is an offset.
9. The side-link communication terminal device cooperation information indication method according to claim 7,
the set of standby PSFCH resources is plural.
10. The side link communication terminal apparatus cooperation information indicating method of claim 8,
the offset is multiple.
11. The method according to any one of claims 1 to 10, applied to a terminal device, comprising the steps of:
the terminal equipment detects transmission resources occupied by data sent by the first terminal and the second terminal equipment and determines whether a conflict exists;
the terminal equipment determines the special resource according to the acquired indication information for determining the standby PSFCH resource set and the special resource index;
the terminal equipment determines the specific content indicated in the cooperation information;
and the terminal equipment sends the cooperation information to the first terminal and/or the second terminal through the special resource.
12. The method of claim 11, wherein the indication for determining the set of standby PSFCH resources and the dedicated resource index comprises at least one of:
subchannel parameters, offset parameters.
13. The method of claim 12, wherein the terminal device obtains the indication information for determining the backup PSFCH resource set and the dedicated resource index by at least one of:
high layer signaling, physical layer signaling, write device.
14. A communication device, comprising: memory, processor and 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 claims 1 to 13.
15. 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 13.
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