CN110740016B

CN110740016B - Internet of vehicles communication feedback timing method and equipment

Info

Publication number: CN110740016B
Application number: CN201910946677.7A
Authority: CN
Inventors: 沈霞
Original assignee: China Academy of Information and Communications Technology CAICT
Current assignee: China Academy of Information and Communications Technology CAICT
Priority date: 2019-10-06
Filing date: 2019-10-06
Publication date: 2022-09-09
Anticipated expiration: 2039-10-06
Also published as: CN110740016A

Abstract

The application discloses car networking communication feedback method contains following step: the downlink control information comprises indication information, and the indication information represents the time positions of 1 or more uplink control channels; the uplink control channel is used for bearing uplink control information; the uplink control information includes hybrid automatic repeat request feedback information of the side link communication. The application also provides network equipment, terminal equipment and a system applying the method. The scheme of the application solves the problem how to reduce the feedback time delay and improve the resource efficiency when the network equipment indicates the terminal equipment at the sending end to feed back the SL HARQ.

Description

Internet of vehicles communication feedback timing method and equipment

Technical Field

The application relates to the technical field of mobile communication, in particular to a vehicle networking communication feedback timing method and device.

Background

In the communication of the internet of vehicles, the communication between terminals is supported through a Side Link (SL), and hybrid automatic repeat request feedback information (SL HARQ) of the side link under a unicast/multicast scenario is supported, wherein the SL HARQ information indicates side link feedback control information (SFCI) carried by a side link feedback channel (PSFCH), and the terminal device at the receiving end feeds back the SL HARQ to the terminal device at the transmitting end, and then transmits the SL HARQ to a network device (e.g., a base station).

When the base station indicates the transmission resource for the SL to the terminal device at the transmitting end, it may indicate the resource for the initial transmission and the multiple repeated transmissions for the same Transport Block (TB) through Downlink Control Information (DCI) or activate a higher layer signaling (RRC), or the transmission resource for multiple TBs. In this way, after one DCI scheduling for SL, N (N is an integer of 1 or more) physical edge link shared channels (pschs) transmitting the same transport block occur. If the terminal device only indicates one Uplink Control Information (UCI) feedback resource for carrying SL HARQ information in the downlink control information, the UCI feedback resource may not meet the feedback delay requirements of different services. For example, when the DCI indicates the initial transmission and the multiple repeated transmissions of one TB, if one indicated UCI is located after the last transmission of the TB, the feedback delay is too long, and the transmitting-end terminal device cannot release the subsequent transmission resource in time even if receiving the SL HARQ feedback of the receiving end.

For another example, if DCI activates configured resources of different TBs, the different TBs may come from different SLs, and latency requirements are different. If one UCI is used to feed back SL HARQ information to the base station, SL transmission with high delay requirement may not be satisfied.

In summary, the problems of large feedback delay and low resource efficiency when the network device instructs the terminal device at the transmitting end to feed back the UCI resource of the SL HARQ need to be solved.

Disclosure of Invention

The application provides a vehicle networking communication feedback timing method and device, and aims to solve the problems of how to reduce feedback delay and improve resource efficiency when network equipment indicates a terminal device at a sending end to feed back SL HARQ.

In a first aspect, an embodiment of the present application provides a vehicle networking communication feedback method, including the following steps:

the downlink control information comprises indication information, and the indication information represents the time positions of 1 or more uplink control channels;

the uplink control channel is used for bearing uplink control information;

the uplink control information includes hybrid automatic repeat request feedback information of the side link communication.

Preferably, the indication information includes 1 or more time unit quantity values for indicating time positions of 1 or more uplink control channels, where each 1 time unit quantity value is used for indicating time positions of 1 uplink control channel. Further preferably, the time unit quantity value represents a distance between a time position of the uplink control channel and a time position corresponding to the downlink control channel.

Preferably, the indication information includes 1 time unit quantity value, which is used to indicate the time positions of 1 or more uplink control channels; the time unit quantity value is used for representing the time distance between 2 adjacent uplink control channels and also representing the distance between the time position of the 1 st uplink control channel and the time position corresponding to the downlink control channel.

Preferably, the indication information includes 1 time unit quantity value, which is used to indicate the time positions of 1 or more uplink control channels; the time unit quantity value is used for representing the time distance between each 1 group of side link feedback control information and the corresponding uplink control channel.

Further preferably, the indication information further includes a period value; the period value represents the number of the side link feedback control information contained in each 1 group of side link feedback control information; the number of cycles is an integer greater than or equal to 1.

In any embodiment of the present application, preferably, the time unit is a time slot or a sub-time slot; the time unit number is applied to the subcarrier range where the physical uplink control channel is located.

An embodiment of the first aspect of the present application is applied to a terminal device, and includes the following steps:

receiving downlink control information; the downlink control information comprises indication information which indicates the time positions of 1 or a plurality of uplink control channels; the uplink control channel is used for carrying uplink control information; the uplink control information includes hybrid automatic repeat request feedback information of side link communication.

The embodiment of the first aspect of the present application is applied to a terminal device, and further includes the following steps:

and the terminal equipment sends the uplink control information to network equipment according to the time position indicated by the indication information.

An embodiment of the first aspect of the present application is applied to a network device, and includes the following steps:

sending downlink control information; the downlink control information comprises indication information, and the indication information represents the time positions of 1 or more uplink control channels; the uplink control channel is used for bearing uplink control information; the uplink control information includes hybrid automatic repeat request feedback information of the side link communication.

An embodiment of the first aspect of the present application is applied to a network device, and further includes the following steps:

and the network equipment receives the uplink control information at the time position indicated by the indication information.

In a second aspect, the present application further provides a terminal device, configured to receive downlink control information, where the downlink control information includes information about a downlink channel; the downlink control information comprises indication information, and the indication information represents the time positions of 1 or more uplink control channels; the uplink control channel is used for bearing uplink control information;

the uplink control information includes hybrid automatic repeat request feedback information of side link communication.

Further, the terminal device is further configured to send the uplink control information to a network device according to the time position indicated by the indication information.

In a third aspect, the present application further provides a network device for use in the method described in any one of the embodiments of the first aspect of the present application,

the network equipment is used for sending downlink control information; the downlink control information comprises indication information which indicates the time positions of 1 or a plurality of uplink control channels; the uplink control channel is used for bearing uplink control information; the uplink control information includes hybrid automatic repeat request feedback information of side link communication.

Preferably, the network device is further configured to receive the uplink control information at the time position indicated by the indication information.

The present application further proposes a mobile communication network comprising at least one terminal device according to any of the embodiments of the present application and/or at least one network device according to any 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 invention relates to a method for indicating information corresponding to a plurality of PUCCH resources used for transmitting terminal equipment to feed back SL HARQ information to a base station when a plurality of uplink control channels are indicated by adopting one downlink control signaling (DCI).

The invention can reduce the feedback time delay of the terminal equipment at the sending end for feeding back the SL HARQ information to the base station, and meet the feedback time delay requirements of different services; PSSCH transmission resources for feeding back ACK are released in time, and resource utilization efficiency is improved.

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 feedback control process for a network device and a terminal device;

FIG. 2 is a flow chart embodiment of the method of the present invention;

fig. 3 is a schematic diagram of an embodiment in which downlink control information includes 1 or more pieces of uplink control channel time location information;

fig. 4 is a schematic diagram of a relationship between an uplink control channel time position and a downlink control channel time position;

fig. 5 is a schematic diagram of an embodiment in which the downlink control information includes 1 time unit quantity value;

fig. 6 is another schematic diagram of a relationship between an uplink control information time position and a downlink control channel time position;

FIG. 7 is a schematic diagram of an embodiment in which the downlink control information includes 1 time unit quantity value associated with the SFCI;

fig. 8 is a schematic diagram of an embodiment in which the downlink control information includes information related to the SFCI and considering the SFCI configuration period;

FIG. 9 is a diagram illustrating the relationship between uplink control information and SFCI positions;

fig. 10 is a diagram of a mobile communication system according to the present application.

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 side link communication feedback control process of a network device and a terminal device.

For the communication of the internet of vehicles, if the resources of the side link are scheduled and allocated by the base station (gNB), the terminal equipment at the sending end of the corresponding side link acquires the resource allocation information of the physical side link shared control channel and the physical side link shared data channel (PSSCH) associated with the physical side link shared control channel by receiving the Downlink Control Information (DCI) or the high-level signaling indication of the base station. And, the sending end terminal device of the side link may feed back SL HARQ information to the gNB, and request the side link to need the transport block retransmission resource to the gNB. In order to support the sending terminal equipment to feed back the SL HARQ information to the gNB, the gNB indicates a Physical Uplink Control Channel (PUCCH) resource carrying the SL HARQ feedback information through downlink control information, and the SL HARQ information is contained in the uplink control information.

When a base station indicates transmission resources of a Subscriber Line (SL) to a terminal equipment at a transmitting end through a Downlink Control Information (DCI) or Radio Resource Control (RRC), the base station can indicate the resources of initial transmission and repeated transmission for a plurality of times through one DCI which is the same transport block, or activate a plurality of configuration resources of the RRC, so that after one DCI for the SL is scheduled, N PSSCHs (N is an integer greater than or equal to 1) for transmitting the same TB or different TBs occur, wherein different TBs indicate that different PSSCHs correspondingly transmit different TBs, and the feedback delay requirements of each TB are different. (fig. 1 shows 4 pschs, and feedback control information SFCI 1 to 4, respectively).

In a communication mode of scheduling transmission resources of a side link by a base station, for a transmission signal carrying an SL HARQ feedback, a transmission flow is: the base station indicates side link transmission resource allocation information to a terminal device (NR-V Tx in figure 1) at a sending end through downlink control information; a transmitting terminal equipment transmits N times of side link control information (SCI) and PSSCH to a receiving terminal equipment (NR-V Rx in figure 1); the method comprises the steps that a sending end terminal device obtains SL HARQ feedback information of a receiving end terminal device through side link feedback control information (SFCI) carried in a physical side link feedback channel (PSFCH), the sending end terminal device feeds back SL HARQ to a base station through Uplink Control Information (UCI) carried in a Physical Uplink Control Channel (PUCCH), wherein between the downlink control information and the uplink control information, the receiving end terminal device can send the SFCI to the sending end terminal device for multiple times, and the specific times are determined according to configuration information.

FIG. 2 is a flow chart embodiment of the method of the present invention.

In a first aspect, an embodiment of the present application provides a vehicle networking communication feedback method, including the following steps 101 to 102:

step 101, the downlink control information comprises indication information, and the indication information represents the time positions of 1 or more uplink control channels;

in step 101, the uplink control channel is used for carrying uplink control information; the uplink control information includes hybrid automatic repeat request (side link hybrid automatic repeat request for short, namely SL HARQ) feedback information of side link communication; the uplink control channel is used for side link communication, wherein, in the plurality of uplink control channels, the SL HARQ may be a same Transport Block (TB) corresponding to a plurality of transmissions in the side link communication, or a plurality of different transport blocks in the side link communication.

Preferably, the indication information further includes information indicating channel resources used for side link communication.

In any embodiment of the present application, preferably, the time unit is a time slot or a sub-time slot; the time unit number is applied to the subcarrier configuration where the physical uplink control channel is located. That is, the time unit is a time unit in which the PUCCH is located. It should be noted here that the length of the time unit is different under different subcarrier conditions.

The "multiple transmission" described in the present application may be M transmissions, where M is an integer greater than 1. In this application, the "multiple uplink control channels" may be G uplink control channels corresponding to the uplink control channels transmitted for M times, where G is an integer greater than 1. In the examples of the present document, the magnitude relationship between M and G is not limited unless otherwise specified.

For example, the first terminal acquires the indication information, and determines timing information of a PUCCH used for feeding back SL HARQ information to the base station according to the indication information. The first terminal is a sending terminal in side link communication, and may also be referred to as side link sending end terminal equipment, and the base station sends a physical layer signaling (i.e. a downlink control signaling DCI, which is carried by a PDCCH) to the sending end terminal equipment, so that the first terminal obtains the indication information. The channel indicated in the indication information and feeding back the SL HARQ information to the base station is an uplink control channel, that is, a PUCCH, which carries UCI information. The SL HARQ information fed back to the base station is included in the UCI information.

Preferably, the method for determining the timing information of the channel resource for feeding back the SL HARQ information to the base station includes one of methods 1 to 3 (see fig. 3 to 9) described herein.

And 102, determining whether PSSCH and SFCI information are transmitted or not according to the content of the SL HARQ information.

Preferably, when the SL HARQ is ACK, the transmission of the PSSCH and the SFCI after the UCI time position of ACK is stopped; and when the SL HARQ is NACK, continuously transmitting PSSCH and SFCI behind UCI time position of NACK.

For example, the first terminal transmits 1 or more times of SCI and psch to the second terminal, and the second terminal transmits 1 or more times of SFCI to the first terminal. And the first terminal sends the received SL HARQ feedback information to the base station according to the PUCCH time domain position indicated by the indication information. The second terminal is a receiving terminal in side link communication, and may also be called as side link receiving terminal equipment, and the first terminal enables the first terminal to obtain SL HARQ information by receiving SFCI sent by the second terminal.

For another example, when the first terminal receives that the SL HARQ in the SFCI is ACK, the first terminal sends UCI including ACK to the base station, and after transmitting the UCI including ACK, the first terminal stops transmitting the pscch of the same TB, and the second terminal also stops transmitting the SFCI of the same TB; and when the SL HARQ is NACK, transmitting UCI containing NACK to the base station, and after transmitting the time position of the UCI containing NACK, continuously transmitting the PSSCH of the same TB to a second terminal, wherein the second terminal also continuously transmits the SFCI of the same TB to the first terminal.

The embodiment of the first aspect of the application is applied to a terminal device, and comprises the following steps 201-202:

step 201, a terminal device receives downlink control information; the downlink control information comprises indication information which indicates the time positions of 1 or a plurality of uplink control channels; the uplink control channel is used for bearing uplink control information; the uplink control information comprises hybrid automatic repeat request feedback information of side link communication; the uplink control channel is used for side link communication, wherein the plurality of uplink control channels, SL HARQ, may be the same Transport Block (TB) corresponding to multiple transmissions in side link communication, or a plurality of different transport blocks in side link communication.

Step 202, the terminal device sends the uplink control information to the network device according to the time position indicated by the indication information.

For example, in step 202, if 1 or G (at this time, G is an integer greater than 1) PUCCH resources carrying SL HARQ feedback information are indicated to the terminal device by DCI according to the indication information, each UCI carries received SL HARQ information between the current UCI and the previous UCI, where the first UCI carries received SL HARQ information between the current UCI and DCI.

Optionally, the PUCCH resource carrying SL HARQ feedback information indicated by the DCI to the terminal device may also carry HARQ information for downlink PDSCH transmission. The function may be configured to be activated or deactivated. If the function is activated, if 1 or G (G is an integer greater than 1) PUCCH resources carrying SL HARQ feedback information are indicated to the terminal equipment by the DCI, carrying the received SL HARQ information between the current UCI and the previous UCI and the HARQ information transmitted by the downlink PDSCH corresponding to the current UCI at each UCI; the first UCI carries the received SL HARQ information between the current UCI and the DCI, and the HARQ information transmitted by the downlink PDSCH corresponding to the current UCI.

Optionally, when DCI schedules an initial transmission resource and multiple repeated transmission resources of a TB, and the base station receives ACK feedback information for the TB sent by the terminal device on one of the indicated PUCCH resources, the base station releases the PSSCH resource scheduled after the PUCCH resource and the PUCCH resource feeding back SL HARQ information, that is, the terminal device does not need to transmit side link data using a subsequent PSSCH resource, and does not need to send SL HARQ information using a subsequent PUCCH resource.

It should be noted that, in step 202, the terminal device is a sending-end terminal device of an edge link, for example, the first terminal device in steps 101 to 102.

The embodiment of the first aspect of the present application is applied to a network device, and includes the following steps 301-302:

step 301, sending downlink control information; the downlink control information comprises indication information, and the indication information represents the time positions of 1 or more uplink control channels; the uplink control channel is used for carrying uplink control information; the uplink control information comprises hybrid automatic repeat request feedback information of side link communication; the uplink control channel is used for side link communication, wherein the plurality of uplink control channels, SL HARQ, may be the same Transport Block (TB) corresponding to multiple transmissions in side link communication, or a plurality of different transport blocks in side link communication.

Step 302, the network device receives the uplink control information at the time position indicated by the indication information.

In step 302, corresponding to step 202:

for example, according to the indication information, if 1 or G (at this time, G is an integer greater than 1) PUCCH resources carrying SL HARQ feedback information are indicated by DCI transmitted by the network device, the received SL HARQ information between the current UCI and the previous UCI is received and identified at each UCI, where the received SL HARQ information between the current UCI and DCI is received and identified at the first UCI.

Optionally, if the PUCCH resource carrying SL HARQ feedback information indicated by the DCI sent by the network device may also carry HARQ information for downlink PDSCH transmission. The function may be configured to be activated or deactivated. If the function is activated, if 1 or G (G is an integer greater than 1) PUCCH resources carrying SL HARQ feedback information are indicated to the terminal equipment by the DCI, the network equipment receives and identifies SL HARQ information received by the terminal equipment between the current UCI and the previous UCI and HARQ information transmitted by a downlink PDSCH corresponding to the current UCI at each UCI; and the first UCI receives and identifies SL HARQ information received by the terminal equipment between the current UCI and the DCI and HARQ information transmitted by a downlink PDSCH corresponding to the current UCI.

Optionally, when DCI schedules an initial transmission resource and multiple repeated transmission resources of one TB, if the network device receives ACK feedback information for the TB sent by the terminal device on one of the indicated PUCCH resources, the PSSCH resource scheduled after the PUCCH resource and the PUCCH resource feeding back SL HARQ information are released, that is, the terminal device does not need to transmit side link data using a subsequent PSSCH resource, and does not need to send SL HARQ information using a subsequent PUCCH resource.

It should be noted that, in step 302, the terminal device is a sending-end terminal device of an edge link, for example, the first terminal device in steps 101 to 102.

Fig. 3 is a schematic diagram of an embodiment in which downlink control information includes 1 or more pieces of uplink control channel time location information, as an embodiment of the method 1.

In steps 101, 201, and 301, preferably, the indication information includes 1 or more time unit quantity values for indicating time positions of 1 or more uplink control channels, where each 1 time unit quantity value is used for indicating time positions of 1 uplink control channel. Further preferably, the time unit quantity value represents a distance between a time position of the uplink control channel and a time position corresponding to the downlink control channel.

That is to say, one or more PUCCH timing values are indicated in the indication information, and each timing value corresponds to a time domain position of one PUCCH resource.

Specifically, for example, 1 or G (G is an integer greater than 1) PUCCH timing values indicated in the indication information are { K1, K2, …, KG }, respectively, where KG (G ≧ 1) is the time unit quantity value. The time unit in which the DCI carried by the Physical Downlink Control Channel (PDCCH) of the indication information is located is a first time unit, the time unit in which the indicated PUCCH is located is a second time unit, and the lengths of the first time unit and the second time unit can be the same or different; the first time unit may be a slot, or a sub-slot, and is not limited to a slot and a sub-slot.

The time unit number is used in a subcarrier range where the physical uplink control channel is located, that is, the time unit number occupied by any one period of time in the subcarrier range where the physical uplink control channel is located is calculated by taking the time unit where the physical uplink control channel is located as a unit length, that is, by taking the second time unit as a unit length.

For further example, as shown in fig. 3, 4 PUCCH timing values { K1, K2, K3, K4} are indicated in DCI scheduling SL psch resources, and corresponding to 4 second time units, time domain positions respectively include one PUCCH resource for transmitting SL HARQ feedback information, and are respectively used to transmit UCI1, UCI 2, UCI 3, and UCI 4.

Fig. 4 is a schematic diagram of a relationship between an uplink control channel time position and a downlink control channel time position.

To further explain the time position of the uplink control channel in the above "method 1", specifically, the time position is determined according to the time position of DCI configured by the system and the subcarrier configuration of the partial Bandwidth (BWP) where the PUCCH is located. Assuming that the subcarrier of the DCI is configured as uPDCCH and the indicated PUCCH subcarrier is configured as uPUCCH, the second time unit position where the PUCCH corresponding to Kg (G ≧ G ≧ 1) indicated in the DCI is located is as shown in FIG. 3.

If the position of the first time unit where the DCI is located in all time units of the DCI is represented by the sequence number n, the position sequence of the second time unit where the Kg corresponding PUCCH is located in all time units under the subcarrier configuration of the partial Bandwidth (BWP) where the PUCCH is located is represented as m:

alternatively, the first and second liquid crystal display panels may be,

the meanings of the uPDCCH and the uPUCCH are shown in standard TS 38.221, and are indexes of bandwidth values of subcarriers occupied by the PDCCH and the PUCCH respectively, and when the index values are increased by 1, the bandwidth values are multiplied, or the duration of a time unit is halved. When the uPDCCH is the same as the uPUCCH, the duration of the first time unit is the same as that of the second time unit. The time unit duration of the PDCCH is the first time unit duration; the time unit duration of the PUCCH, i.e., the second time unit duration.

Fig. 5 is a schematic diagram of an embodiment in which the downlink control information includes 1 time unit quantity value, as an embodiment of the method 2.

In steps 101, 201, and 301, preferably, the indication information includes 1 time unit quantity value, which is used to indicate time positions of 1 or more uplink control channels; the time unit quantity value is used for representing the time distance between 2 adjacent uplink control channels and also representing the distance between the time position of the 1 st uplink control channel and the time position corresponding to the downlink control channel.

And indicating a PUCCH timing value in the indication information, and determining the time domain position of one or more PUCCH resources based on the timing value.

Specifically, a PUCCH timing value K1 is indicated in the indication information, for example, each K1 second time units after the indication information is a slot including a PUCCH.

As with the method 1, the number of time units is used for subcarrier configuration of the physical uplink control channel, that is, the number of time units occupied by any period of time in a subcarrier range where the physical uplink control channel is located is calculated by taking the time unit where the physical uplink control channel is located as a unit length, that is, by taking the second time unit as a unit length.

For further example, as shown in fig. 5, a PUCCH timing value { K1} is indicated in DCI scheduling SL psch resources, where the timing value corresponds to a second time unit position of one or more PUCCH resources, for example, UCI1, UCI 2, UCI 3, UCI 4 are transmitted by 4 PUCCH resources shown in fig. 5.

Fig. 6 is another schematic diagram of the relationship between the uplink control information time position and the downlink control channel time position.

To further explain the time position of the uplink control channel in the above "method 2", specifically, in the indication information, one PUCCH timing value K1 is indicated, which indicates that every K1 second time units are slots containing PUCCH, until the terminal device at the transmitting end finishes transmitting SL HARQ feedback information to the base station, or new indication information indicates a new PUCCH timing value. The PUCCH is used for transmitting SL HARQ feedback information. Wherein the second time unit position of the first and subsequent PUCCH resources is as shown in fig. 6.

If the position of the first time unit where the DCI is located in all time units of the DCI is sequence n, the position of the second time unit where the first PUCCH is located corresponding to K1 in all time units under the subcarrier configuration of the partial Bandwidth (BWP) where the PUCCH is located is denoted by sequence m:

alternatively, the first and second electrodes may be,

wherein, the time duration of the time unit in which the PDCCH is located is the first time unit duration; the time unit duration of the PUCCH, i.e., the second time unit duration. When uPDCCH is the same as uPUCCH, the duration of the first time unit is the same as that of the second time unit, and if the position of the first time unit where the DCI is located is the sequence number n, the position of the p-th PUCCH relative to the second time unit where the first PUCCH is located is m + (p-1) xK 1.

Fig. 7 is a schematic diagram of an embodiment in which the downlink control information includes 1 time unit quantity value related to the SFCI, as an embodiment of the method 3.

The method 3 indicates the relative timing relationship between the PUCCH resources and the configured PSFCH resources in the indication information, and determines the time domain positions of one or more PUCCH resources based on the PSFCH resources.

In steps 101, 201, and 301, preferably, the indication information includes 1 time unit quantity value, which is used to indicate time positions of 1 or more uplink control channels; the time unit quantity value is used for representing the time distance between each 1 group of side link feedback control information and the corresponding uplink control channel.

Specifically, one timing value K1 is indicated in the indication information to indicate that each 1 group of side link feedback control information (including L SFCIs, where L is an integer greater than or equal to 1) is followed by one PUCCH. Wherein the PUCCH is used for transmitting SL HARQ feedback information. The time unit of the SFCI is a third time unit, the time unit of the indicated PUCCH is a second time unit, and the third time unit and the second time unit may have different lengths, may be a slot or a sub-slot, and are not limited to a slot and a sub-slot.

As with the method 1, the number of time units is applied to the subcarrier configuration where the physical uplink control channel is located, that is, the number of time units occupied by any one period of time in the subcarrier range where the physical uplink control channel is located is calculated by taking the time unit where the physical uplink control channel is located as a unit length, that is, by taking the second time unit as a unit length.

In fig. 7, if L is 1, UCI is transmitted every K1 time units (second time unit) after 1 SFCI. That is, UCI1 is transmitted at the K1 th second time unit after SFCI 1; transmitting UCI 2 at a K1 th second time unit after SFCI 2; transmitting UCI 3 at a K1 th second time unit after SFCI 3; UCI 4 is transmitted at a K1 th second time unit after SFCI 4.

Fig. 8 is a schematic diagram of an embodiment in which the downlink control information includes information related to the SFCI and considers the SFCI configuration period, as another embodiment of the method 3.

Further preferably, in steps 101, 201, 301, the indication information further includes a period value; the period value represents the number of the side link feedback control information contained in each 1 group of side link feedback control information; the number of cycles is an integer greater than or equal to 1.

Specifically, the indication information indicates a timing value K1 and a periodicity value L (L is an integer greater than or equal to 1 and is also a configuration period) of the UCI with respect to the SFCI, and indicates that one PUCCH is corresponding to each L SFCI. Wherein the PUCCH is used for transmitting SL HARQ feedback information. Further, the period value L of UCI with respect to SFCI may also be indicated by higher layer RRC configuration information.

Further illustrating the relationship of the UCI relative to the SCI configuration period and the UCI position. Compare FIG. 7 with

Fig. 8 and fig. 7 show that the configuration period L of the UCI with respect to the SFCI is 1 in the embodiment, that is, the transmitting-end terminal device corresponds to one PUCCH after each SFCI. In the embodiment shown in fig. 8, the configuration period L of the UCI with respect to the SFCI is 2, that is, the transmitting end terminal device corresponds to one PUCCH after every 2 SFCIs. That is, UCI1 is transmitted at K1 th second time unit after SFCI 2; UCI 2 is transmitted at a K1 th second time unit after SFCI 4.

Fig. 9 is a schematic diagram of the relationship between the uplink control information and the SFCI location.

To further explain the time position of the uplink control channel in the above "method 3", specifically, the time position is determined according to the system configuration of PSFCH and the subcarrier configuration of the fractional Bandwidth (BWP) where the PUCCH is located. Assuming that the subcarriers of the PSFCH are configured as the uppsfch and the indicated PUCCH subcarriers are configured as the uPUCCH, the second time unit location where the PUCCH corresponding to K1 indicated in the DCI is located is as shown in fig. 9, and if the location of the first time unit location of the SFCI is represented as sequence number n, the second time unit location where the corresponding PUCCH is located is represented as sequence number m:

alternatively, the first and second electrodes may be,

wherein, the time unit duration of the PSFCH, i.e. the third time unit duration; the time unit duration of the PUCCH, i.e., the second time unit duration. The meaning of uPSFCH is found in standard TS 38.321. When uPUCCH is the same as uPSFCH, the third time unit is the same as the second time unit.

In a second aspect, an embodiment of the present application provides a mobile terminal device 10, which is used in the method according to any one of the embodiments of the present application. The mobile terminal device comprises a control module 11 and a sending module 12.

The control module is used for receiving downlink control information; the downlink control information comprises indication information, and the indication information represents the time positions of 1 or more uplink control channels; the uplink control channel is used for carrying uplink control information.

The uplink control information comprises hybrid automatic repeat request feedback information of side link communication; the uplink control channel is used for side link communication, wherein the plurality of uplink control channels, SL HARQ, may be the same Transport Block (TB) corresponding to multiple transmissions in side link communication, or a plurality of different transport blocks in side link communication.

Further, the sending module is further configured to send the uplink control information to a network device according to the time position indicated by the indication information. At this time, the terminal device serves as a first terminal device and is used as a side link sender terminal device.

Further, the sending module is further configured to send the SCI information and the psch according to the psch resource location indicated by the indication information. At this time, the terminal device serves as a first terminal device, and the transmitted SCI information and pscch are received by a second terminal device; and the second terminal equipment is used as the side link receiving terminal equipment.

Further, the terminal device further includes an edge link receiving module (not shown in fig. 10) configured to receive a PSFCH, where the PSFCH carries the SFCI. The PSFCH and SFCI here come from the second terminal.

Further, the terminal device further includes a downlink receiving module (not shown in fig. 10) configured to receive a PDSCH, where the PDSCH carries downlink traffic data. Further, the PUCCH sent by the sending module is also used to carry HARQ information corresponding to the downlink PDSCH from the terminal device.

In a third aspect, the present application further provides a network device 20, configured to implement the method according to any embodiment of the present application. The network device comprises a receiving module 21 and a determining module 22.

The determining module is used for sending downlink control information; the downlink control information comprises indication information, and the indication information represents the time positions of 1 or more uplink control channels; the uplink control channel is used for bearing uplink control information; the uplink control information comprises hybrid automatic repeat request feedback information of side link communication; the uplink control channel is used for side link communication, wherein the plurality of uplink control channels, SL HARQ, may be the same Transport Block (TB) corresponding to multiple transmissions in side link communication, or a plurality of different transport blocks in side link communication.

The receiving module is further configured to receive the uplink control information at the time position indicated by the indication information.

The determining module determines the time position of the uplink control channel (or uplink control information) and the control module controls the time position of the uplink control channel (or uplink control information), as described in steps 101 to 102, 201 to 202, and 301 to 302, which will not be described again.

In a fourth aspect, the present application further provides a mobile communication system, including at least one network device according to any embodiment of the present application, and/or at least one terminal device according to any embodiment of the present application.

It should be noted that technical features of any one method embodiment of the present application can be used in the network device, the terminal device, and the mobile communication system of the present application, and are not described herein again.

In order to unify the protocol between the network device and the mobile terminal device so as to complete the information interaction between the network device and the mobile terminal device, the indication information in the method according to any embodiment of the present application may be sent to the network device and/or the mobile terminal device through a high-level configuration or other signaling, or sent from the network device to the mobile terminal device.

The downlink control signaling or the high-level signaling provided by the application comprises indication information. For example, the first terminal acquires the indication information, and determines timing information of a PUCCH used for feeding back SL HARQ information to the base station according to the indication information, where the timing information includes at least one of the following information:

the indication information indicates that 1 or G (G is an integer greater than 1) PUCCH timing values are { K1, K2, …, KG }, respectively, which include KG (G ≧ 1), corresponding to the time units of G PUCCH resources (i.e., the second time units of methods 1-3 of the present application, the same applies below) for transmitting SL HARQ feedback information.

Indicating a PUCCH timing value K1 in the indication information, indicating that K1 time units after each indicated PUCCH resource correspond to a next PUCCH, until the sending end terminal device finishes sending SL HARQ feedback information to the base station, or indicating a new PUCCH timing value by new indication information.

The indication information indicates a timing value K1, and a configuration period L (L is an integer greater than or equal to 1) of the UCI with respect to the SFCI, which is indicated as a corresponding PUCCH after each L SFCIs.

Preferably, the configuration period L of the UCI with respect to the SFCI is indicated by higher layer RRC configuration information.

On the basis of the indication information, according to the methods 1 to 3, the first terminal sends the received SL HARQ feedback information to the base station according to the PUCCH time domain position indicated by the indication information, and the method is characterized by comprising the following steps:

if the indication information DCI indicates 1 or G (G is an integer greater than 1) PUCCH resources carrying SL HARQ feedback information to the terminal device at the transmitting end, each PUCCH carries received SL HARQ information between the current UCI and the previous UCI, where the first PUCCH carries received SL HARQ information between the current UCI and DCI.

Further, the PUCCH resource carrying SL HARQ feedback information indicated by the indication information to the sending end terminal device may also carry HARQ information transmitted by the downlink PDSCH. If the indication information DCI indicates 1 or G (G is an integer greater than 1) PUCCH resources carrying SL HARQ feedback information to the terminal device (i.e., a first terminal device serving as a transmitting end terminal device), then each UCI carries received SL HARQ information between a current UCI and a previous UCI, and HARQ information transmitted by a downlink PDSCH corresponding to the current UCI; the first UCI carries the received SL HARQ information between the current UCI and the DCI, and the HARQ information transmitted by the downlink PDSCH corresponding to the current UCI.

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. 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 invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

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.

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

1. A vehicle networking communication feedback method is characterized by comprising the following steps:

after downlink control information aiming at the side link is scheduled, N physical side link shared channels for transmitting the same transmission block or different transmission blocks occur, wherein N is an integer larger than 1;

the downlink control information comprises indication information, and the indication information represents the time positions of a plurality of uplink control channels;

the uplink control channel is used for carrying uplink control information; each uplink control information carries the received SL _ HARQ information between the uplink control information and the previous uplink control information, and the first uplink control information carries the received SL _ HARQ information between the uplink control information and the downlink control information.

2. The method of claim 1,

the indication information includes 1 or more time unit quantity values for indicating time positions of the plurality of uplink control channels.

3. The method of claim 2,

the time unit quantity value represents the distance between the time position of the uplink control channel and the time position corresponding to the downlink control channel.

4. The method of claim 1,

the indication information comprises 1 time unit quantity value used for indicating the time positions of the uplink control channels; the time unit quantity value is used for representing the time distance between 2 adjacent uplink control channels and also representing the distance between the time position of the 1 st uplink control channel and the time position corresponding to the downlink control channel.

5. The method of claim 1,

the indication information comprises 1 time unit quantity value used for indicating the time positions of the uplink control channels; the time unit quantity value is used for representing the time distance between each 1 group of side link feedback control information and the corresponding uplink control channel.

6. The method of claim 5,

the indication information also includes a period value;

the period value represents the number of the side link feedback control information contained in each 1 group of side link feedback control information;

the period value is an integer greater than or equal to 1.

7. The method according to any one of claims 2 to 6,

the time unit is a time slot or a sub-time slot;

the time unit number is applied to the subcarrier configuration where the physical uplink control channel is located.

8. The method according to any of claims 1 to 6, for a terminal device,

receiving the downlink control information;

sending the uplink control information, wherein the uplink control information comprises hybrid automatic repeat request feedback information of side link communication;

the plurality of uplink control channels correspond to the same transport block that is transmitted for a plurality of times in the side link communication, or different transport blocks in the side link communication.

9. The method of claim 8, further comprising the step of:

and the terminal equipment sends the uplink control information to network equipment according to the time position represented by the indication information.

10. The method according to any of claims 1 to 6, for a network device,

sending the downlink control information;

receiving the uplink control information, wherein the uplink control information comprises hybrid automatic repeat request feedback information of side link communication;

the plurality of uplink control channels correspond to the same transport block for multiple transmissions in the edge link communication or different transport blocks in the edge link communication.

11. The method of claim 10,

12. A terminal device for implementing the method of any one of claims 1 to 9, comprising a control module and a sending module;

the control module is used for receiving the downlink control information; the sending module is further configured to send the uplink control information according to the time position indicated by the indication information.

13. The terminal device of claim 12,

the sending module is further configured to send the SCI and the PSSCH according to the PSSCH resource location indicated by the indication information.

14. A network device for implementing the method according to any one of claims 1 to 9, comprising a receiving module and a determining module;

the determining module is configured to send the downlink control information; the receiving module is further configured to receive the uplink control information at the time position indicated by the indication information.

15. The network device of claim 14,

the determining module is further configured to determine a time position of the uplink control channel.

16. A mobile communication network comprising at least one terminal device according to any one of claims 12 to 13 and/or at least one network device according to any one of claims 14 to 15.