CN111107583B - Method for sending sidelink retransmission request (BSR) and terminal equipment - Google Patents

Method for sending sidelink retransmission request (BSR) and terminal equipment Download PDF

Info

Publication number
CN111107583B
CN111107583B CN201910229465.7A CN201910229465A CN111107583B CN 111107583 B CN111107583 B CN 111107583B CN 201910229465 A CN201910229465 A CN 201910229465A CN 111107583 B CN111107583 B CN 111107583B
Authority
CN
China
Prior art keywords
bsr
sidelink
retransmission request
priority
data
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201910229465.7A
Other languages
Chinese (zh)
Other versions
CN111107583A (en
Inventor
鲍炜
杨晓东
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vivo Mobile Communication Co Ltd
Original Assignee
Vivo Mobile Communication Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vivo Mobile Communication Co Ltd filed Critical Vivo Mobile Communication Co Ltd
Priority to CN201910229465.7A priority Critical patent/CN111107583B/en
Publication of CN111107583A publication Critical patent/CN111107583A/en
Application granted granted Critical
Publication of CN111107583B publication Critical patent/CN111107583B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H04W72/566—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient
    • H04W72/569—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient of the traffic information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0278—Traffic management, e.g. flow control or congestion control using buffer status reports

Abstract

The embodiment of the invention discloses a method for sending a sidelink retransmission request (BSR) and terminal equipment, which are used for solving the problem that the terminal equipment cannot determine how to send the sidelink retransmission request (BSR) and other data information on a Uu link, and the effectiveness of communication is affected. The method comprises the following steps: determining the transmission priority of a sidelink retransmission request (BSR) and target information; and sending the sidelink retransmission request BSR and the target information according to the sending priority. The embodiment of the invention can ensure that important data information (such as a sidelink retransmission request (BSR) or target information) can be transmitted preferentially, ensure the reliability of a network equipment scheduling mode and improve the resource utilization rate and the communication system efficiency.

Description

Method for sending sidelink retransmission request (BSR) and terminal equipment
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to a method for sending a buffer status report (Buffer Status Report, BSR) of a retransmission request of a sidelink (or translated into a sidelink, a sidelink and the like) and terminal equipment.
Background
The sidelink transmission is mainly classified into broadcasting, multicasting and unicasting. In the scenario of sidelink unicast and multicast, the terminal device may adopt a Mode1 resource scheduling Mode, that is, the sending terminal device requests the network device for the sidelink resource to perform data transmission.
After the transmitting terminal device sends data to the receiving terminal device through the sidelink link, if the receiving terminal device fails to receive the data, the transmitting terminal device needs to retransmit the data on the sidelink link, at this time, the transmitting terminal device may send a sidelink retransmission request BSR to the network device to request the sidelink resource required for retransmitting the data.
The sidelink retransmission request BSR is sent through a Uu link, however, other data information needs to be sent on the Uu link between the sending end terminal device and the network device. At present, how to send a sidelink retransmission request BSR and other data information on Uu link is a technical problem that needs to be solved in the prior art.
Disclosure of Invention
The embodiment of the invention aims to provide a method for sending a sidelink retransmission request (BSR) and terminal equipment, which are used for solving the problem that the terminal equipment cannot determine how to send the sidelink retransmission request (BSR) and other data information on a Uu link to influence the communication effectiveness.
In a first aspect, a method for sending a sidelink retransmission request BSR is provided, where the method is performed by a terminal device, and the method includes:
determining the transmission priority of a sidelink retransmission request (BSR) and target information;
And sending the sidelink retransmission request BSR and the target information according to the sending priority.
In a second aspect, there is provided a terminal device comprising:
the priority determining module can be used for determining the sending priority of the sidelink retransmission request BSR and the target information;
and the sending module can be used for sending the sidelink retransmission request BSR and the target information according to the sending priority.
In a third aspect, there is provided a terminal device comprising a processor, a memory and a computer program stored on the memory and executable on the processor, the computer program implementing the steps of the method according to the first aspect when executed by the processor.
In a fourth aspect, there is provided a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method according to the first aspect.
In the embodiment of the invention, the transmission priority of the sidelink retransmission request BSR and the target information is determined, and the sidelink retransmission request BSR and the target information are transmitted according to the determined transmission priority, so that the problem that the terminal equipment cannot determine how to transmit the sidelink retransmission request BSR and the target information is solved, and the communication effectiveness is improved.
Meanwhile, the embodiment of the application can ensure that important data information (such as a sidelink retransmission request (BSR) or target information) can be transmitted preferentially, ensure the reliability of a network equipment scheduling mode and improve the resource utilization rate and the communication system efficiency.
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 specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
fig. 1 is a schematic flowchart of a method for transmitting a sidelink retransmission request BSR according to an embodiment of the present application;
fig. 2 is a schematic diagram of an application scenario of a method for transmitting a sidelink retransmission request BSR according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a sidelink retransmission request BSR format, according to an embodiment of the present application;
FIG. 4 is a schematic diagram of a sidelink data BSR format, according to an embodiment of the present application;
fig. 5 is a schematic structural view of a terminal device according to an embodiment of the present application;
fig. 6 is a schematic diagram of a network device according to an embodiment of 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 clearly and completely described below with reference to specific embodiments of the present application and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be understood that the technical solution of the embodiment of the present invention may be applied to various communication systems, for example: a long term evolution (Long Term Evolution, LTE) sidelink system, a New Radio Access (New) sidelink system, or a subsequent evolution communication system.
In an embodiment of the present invention, the Terminal device may include, but is not limited to, a Mobile Station (MS), a Mobile Terminal (Mobile Terminal), a Mobile phone (Mobile phone), a User Equipment (UE), a handset (handset), a portable device (portable Equipment), a vehicle (vehicle), and the like, and may communicate with one or more core networks via a radio access network (Radio Access Network, RAN), for example, the Terminal device may be a Mobile phone (or referred to as a "cellular" phone), a computer with a wireless communication function, and the like, and the Terminal device may also be a portable, pocket, hand-held, computer-built-in, or vehicle-mounted Mobile device.
In the embodiment of the invention, the network equipment is a device which is deployed in the wireless access network and used for providing a wireless communication function for the terminal equipment. The network device may be a base station, which may include various forms of macro base stations, micro base stations, relay stations, access points, and the like. In systems employing different radio access technologies, the names of devices with base station functionality may vary. For example, in LTE networks, referred to as Evolved nodebs (enbs or enodebs), in third generation (3rd Generation,3G) networks, referred to as Node bs (Node bs), or network devices in subsequent Evolved communication systems, etc., although the term is not limiting.
As shown in fig. 1, an embodiment of the present invention provides a method 100 for sending a sidelink retransmission request BSR, which may be performed by a terminal device, and includes the following steps:
s102: and determining the transmission priority of the sidelink retransmission request BSR and the target information.
The sidelink retransmission request BSR mentioned in each embodiment of the present invention may be that, in a case where the sidelink data of the sidelink link between the terminal devices fails to be transmitted, the transmitting terminal device requests the sidelink resource to the network device, where the sidelink resource is used for retransmitting the sidelink data.
The target information is mainly data information of Uu link between the terminal device and the network device, for example, the target information may be sidelink data BSR, data from Uplink common control channel (Uplink-Common Control Channel, UL-CCCH), cell-radio network temporary identifier (Cell-Radio Network Temporary Identifier, C-RNTI) MAC CE, and so on.
The sending priority of the sidelink retransmission request BSR and the target information determined in the step can be specifically: the sending priority of the sidelink retransmission request BSR is higher than the sending priority of the target information; or, the transmission priority of the sidelink retransmission request BSR is lower than the transmission priority of the target information. How to determine the transmission priority of both will be described in detail in the following embodiments.
It should be noted that, in the embodiment of the present invention, the BSR for requesting the resources required for retransmitting the sidelink data is referred to as a sidelink retransmission request BSR, and of course, other similar terms may be used to represent the sidelink retransmission request BSR, for example, a sidelink retransmission BSR, a sidelink BSR, a BSR, and so on.
Similarly, the BSR of the resource required for requesting transmission (i.e., not having failed in transmission) of the sidelink data is referred to as the sidelink data BSR in the embodiment of the present invention, and of course, other similar terms may be used to refer to the sidelink data BSR, e.g., the sidelink BSR, the BSR, etc.
S104: and sending the sidelink retransmission request BSR and the target information according to the sending priority.
This step is specifically performed, for example:
if the target information is a sidelink data BSR, if the transmission priority of the sidelink retransmission request BSR is higher than that of the sidelink data BSR, preferentially transmitting the sidelink retransmission request BSR, and transmitting the sidelink data BSR in a subsequent transmission opportunity; or if the transmission priority of the sidelink data BSR is higher than the transmission priority of the sidelink retransmission request BSR, preferentially transmitting the sidelink data BSR, and transmitting the sidelink retransmission request BSR in a subsequent transmission opportunity.
For another example, in the case where the target information is data from UL-CCCH, uu interface padding BSR, or other information, if the transmission priority of the sidelink retransmission request BSR is higher than the transmission priority of the target information, the sidelink retransmission request BSR is preferentially transmitted, and the target information is transmitted in a subsequent transmission opportunity; or if the transmission priority of the target information is higher than the transmission priority of the sidelink retransmission request BSR, the target information is preferentially transmitted, and the sidelink retransmission request BSR is transmitted in a subsequent transmission opportunity.
The above example lists the case where the total amount of transmission resources required for the sidelink retransmission request BSR and the target information exceeds the remaining transmission resources of the current TTI, and of course, if the total amount of transmission resources required for the sidelink retransmission request BSR and the target information is smaller than the remaining transmission resources of the current TTI, the embodiment may assemble MAC protocol data units PDU in the order of the above transmission priority, and then transmit the MAC PDU, that is, simultaneously transmit the sidelink retransmission request BSR and the target information in one transmission opportunity.
The method for sending the sidelink retransmission request BSR provided by the embodiment of the invention determines the sending priority of the sidelink retransmission request BSR and the target information, and sends the sidelink retransmission request BSR and the target information according to the determined sending priority, thereby solving the problem that the terminal equipment cannot determine how to send the sidelink retransmission request BSR and the target information and improving the communication effectiveness.
Meanwhile, the embodiment of the invention can ensure that important information (such as a sidelink retransmission request (BSR) or target information) can be transmitted preferentially, ensure the reliability of a network equipment scheduling mode and improve the resource utilization rate and the communication system efficiency.
Alternatively, the target information may be a sidelink data BSR in the above method embodiment 100, and the above method embodiment 100 will be described in a supplementary manner in several detailed embodiments.
The determining transmission priorities of the sidelink retransmission request BSR and the target information (i.e., sidelink data BSR) mentioned in S102 includes:
1) And determining the transmission priorities of the sidelink retransmission request BSR and the sidelink data BSR according to the priorities of the logical channels corresponding to the sidelink retransmission request BSR and the priorities of the logical channels corresponding to the sidelink data BSR.
Specifically, for example, if the priority of the logical channel corresponding to the sidelink retransmission request BSR is higher than the priority of the logical channel corresponding to the sidelink data BSR, determining that the transmission priority of the sidelink retransmission request BSR is higher than the transmission priority of the sidelink data BSR; or if the priority of the logical channel corresponding to the sidelink retransmission request BSR is lower than the priority of the logical channel corresponding to the sidelink data BSR, determining that the transmission priority of the sidelink retransmission request BSR is lower than the transmission priority of the sidelink data BSR. Or (b)
2) And determining the transmission priorities of the sidelink retransmission request BSR and the sidelink data BSR according to the priorities of the logical channel groups corresponding to the sidelink retransmission request BSR and the priorities of the logical channel groups corresponding to the sidelink data BSR.
In general, a logical channel group includes a plurality of logical channels, and the priority of the logical channel group mentioned in this step may be the priority of the highest priority logical channel among all the logical channels included in the logical channel group.
Further optionally, in S102, if the priority of the logical channel corresponding to the sidelink retransmission request BSR and the priority of the logical channel corresponding to the sidelink data BSR are equal, determining that the transmission priority of the sidelink retransmission request BSR is higher than the transmission priority of the sidelink data BSR; or (b)
And if the priority of the logical channel group corresponding to the sidelink retransmission request BSR and the priority of the logical channel group corresponding to the sidelink data BSR are equal, determining that the transmission priority of the sidelink retransmission request BSR is higher than the transmission priority of the sidelink data BSR.
The embodiment can ensure the priority transmission of the sidelink retransmission request BSR, further ensure the timely transmission of the data retransmitted by the sidelink and improve the communication efficiency of the sidelink.
Further optionally, in S102, if the sidelink resource requested by the sidelink retransmission request BSR is used to retransmit a MAC protocol data unit PDU, where the MAC PDU includes a MAC control element CE, it is determined that the transmission priority of the sidelink retransmission request BSR is higher than the transmission priority of the sidelink data BSR.
Of course, in other embodiments, the relative priority between the MAC CE in the sidelink link and the typical sidelink data may be further given, so that S102 may determine the transmission priority of the sidelink retransmission request BSR and the sidelink data BSR according to the relative priority between the MAC CE in the sidelink link and the typical sidelink data.
The several embodiments described above describe how to determine the transmission priorities of the sidelink retransmission request BSR and the sidelink data BSR. If the transmission priority of the sidelink retransmission request BSR is higher than that of the sidelink data BSR, preferentially transmitting the sidelink retransmission request BSR, and transmitting the sidelink data retransmission request in a subsequent transmission opportunity; or if the transmission priority of the sidelink data BSR is higher than the transmission priority of the sidelink retransmission request BSR, preferentially transmitting the sidelink data BSR, and transmitting the sidelink data BSR in a subsequent transmission opportunity.
Optionally, in the foregoing embodiments, before sending the sidelink retransmission request BSR and the sidelink data BSR according to the sending priority, the method may further include the following steps:
and if the total amount of transmission resources required by the sidelink retransmission request BSR and the sidelink data BSR exceeds the residual transmission resources of the current transmission time interval TTI, performing puncturing processing on the sidelink retransmission request BSR and the BSR to be punctured in the sidelink data BSR according to the transmission priority of the sidelink retransmission request BSR, the transmission priority of the sidelink data BSR and the residual transmission resources.
In this embodiment, the BSR to be truncated may specifically be a sidelink data BSR; or a sidelink retransmission request BSR; or a sidelink data BSR and an idelink retransmission request BSR.
Specifically, for example, the transmission priority of the sidelink retransmission request BSR is higher than the transmission priority of the sidelink data BSR, and the remaining transmission resources of the current TTI are insufficient to transmit all the sidelink data BSR, then the sidelink data BSR may be truncated, and finally the sidelink retransmission request BSR and the sidelink data BSR after being truncated are preferentially transmitted, and the remaining portion of the sidelink data BSR is transmitted in a subsequent transmission opportunity.
For another example, the transmission priority of the sidelink data BSR is higher than the transmission priority of the sidelink retransmission request BSR, and if the remaining transmission resources of the current TTI are insufficient to transmit all the sidelink retransmission request BSR, the sidelink retransmission request BSR may be punctured, and finally the sidelink data BSR and the sidelink retransmission request BSR after being punctured are preferentially transmitted, and the remaining part of the sidelink retransmission request BSR is transmitted in a subsequent transmission opportunity.
For another example, the remaining transmission resources of the current TTI are insufficient to transmit a sidelink retransmission request BSR and a sidelink data BSR, wherein the sidelink data BSR includes at least one entry, e.g., entry 1 and entry 2; the sidelink retransmission request BSR also includes at least one entry, e.g., entry 3 and entry 4, and this embodiment may be based on the transmission priority of the sidelink data BSR and all the entries included in the sidelink retransmission request BSR:
truncating the sidelink data BSR and the sidelink retransmission request BSR (for example, the priority of each item can be item 3, item 1, item 4 and item 2 from top to bottom); or,
truncating the sidelink data BSR (e.g., the order of priority of entries from top to bottom may be entry 3, entry 4, entry 1, entry 2); or,
Truncating the sidelink retransmission request BSR (e.g., the order of priority of entries from top to bottom may be entry 1, entry 2, entry 3, entry 4).
After the above truncation process, the sending, according to the sending priority, the sidelink retransmission request BSR and the sidelink data BSR in this embodiment includes:
preferentially sending the truncated sidelink retransmission request BSR and the truncated sidelink data BSR, wherein the BSR to be truncated comprises the sidelink retransmission request BSR and the sidelink data BSR; or (b)
Preferentially sending the sidelink retransmission request BSR and the sidelink data BSR after truncation processing, wherein the BSR to be truncated comprises the sidelink data BSR; or (b)
And preferentially sending the sidelink data BSR and the sidelink retransmission request BSR after truncation processing, wherein the BSR to be truncated comprises the sidelink retransmission request BSR.
In the above embodiments, the MAC subheader (subheader) corresponding to the truncated sidelink retransmission request BSR may further include indication information, where the indication information is used to indicate that the format of the truncated sidelink retransmission request BSR is a truncated BSR format.
According to the embodiment of the invention, the forward retransmission request BSR or the forward data BSR is truncated, and when the truncated processing is carried out, one or more items with high priority can be reserved according to the priority of a plurality of items contained in the forward retransmission request BSR or the forward data BSR, so that the items with high priority can be ensured to be sent preferentially, and the forward resources can be scheduled in time by the network equipment. Meanwhile, the embodiment can fully utilize transmission resources in the transmission opportunity, avoid wasting the transmission resources and improve the communication efficiency.
The above embodiments are described with reference to the target information being the sidelink data BSR, and the target information may also be data from the UL-CCCH, uu interface padding BSR, and other information, and the method embodiment 100 will be described in addition to the target information or the data from the UL-CCCH, uu interface padding BSR, and the like.
The determining transmission priorities of the sidelink retransmission request BSR and the target information mentioned in S102 includes:
if the target information is the first type information, the sending priority of the target information is higher than the sending priority of the sidelink retransmission request BSR; or (b)
If the target information is the second type information, the sending priority of the target information is lower than the sending priority of the sidelink retransmission request BSR;
wherein the first type of information includes at least one of:
C-RNTI MAC CE；
data from the UL-CCCH;
reporting the data volume and the power margin to the MAC CE;
the configured authorization confirms the MAC CE;
semi-persistent scheduling, SPS, acknowledgement, MAC CE;
automatically uplink confirming the MAC CE;
filling Uu interface BSR MAC CEs outside the BSR; and
a power headroom MAC CE, an extended power headroom MAC CE, a dual connection power headroom MAC CE, a single entry power headroom MAC CE, or a multi-entry power headroom MAC CE;
the second type of information includes at least one of:
data from a target logical channel, the data from the target logical channel not including data from the UL-CCCH;
recommended bit rate query MAC CE;
uu interface fills BSR MAC CE;
uu interface padding BSR; and
the sidelink fills the BSR.
Optionally, before the step S104 of sending the sidelink retransmission request BSR and the target information according to the sending priority, the method may further include the following steps:
and if the total amount of transmission resources required by the sidelink retransmission request BSR and the target information exceeds the residual transmission resources of the current TTI and the transmission priority of the target information is higher than the transmission priority of the sidelink retransmission request BSR, truncating the sidelink retransmission request BSR according to the current residual transmission resources.
Thus, transmitting the sidelink retransmission request BSR and the target information according to the transmission priority includes: and preferentially sending the target information and the truncated sidelink retransmission request BSR, and transmitting the rest part of the sidelink retransmission request BSR in the subsequent transmission opportunity.
It may be appreciated that in this embodiment, if the transmission priority of the target information is lower than the transmission priority of the sidelink retransmission request BSR, then, according to the remaining transmission resources, the puncturing process is performed on the target information, and the sidelink retransmission request BSR and the target information after the puncturing process are preferentially transmitted, and the remaining portion of the target information is transmitted in the subsequent transmission opportunity.
According to the embodiment, the truncation processing is carried out on the sidelink retransmission request BSR, and when the truncation processing is carried out, one or more items with high priority can be reserved according to the priority of a plurality of items contained in the sidelink retransmission request BSR, so that the priority of the items with high priority can be guaranteed to be sent, and the network equipment can schedule the sidelink resources in time. Meanwhile, the embodiment can fully utilize transmission resources in the transmission opportunity, avoid wasting the transmission resources and improve the communication efficiency.
In order to describe the method for sending the sidelink retransmission request BSR in detail, the following description will be made with reference to several specific embodiments.
Example 1
Referring to fig. 2, fig. 2 is a typical scenario of a sidelink retransmission request BSR report, where V2X service is transmitted between terminal device 1 and terminal device 2 through a sidelink link, and the terminal device 1 and the terminal device 2 use a resource scheduling Mode of Mode1, that is, the terminal device 1 requests sidelink resources from a network device for sidelink data transmission.
After the terminal device 1 sends the sidelink data to the terminal device 2, if the terminal device 2 fails to receive the sidelink data, the terminal device 1 needs to retransmit the sidelink data on the sidelink link, and the retransmitted sidelink data also needs to request the sidelink resource to the network device, where the request of the sidelink resource can use the sidelink retransmission request BSR, and the request of the terminal device 1 to the network device (including the sidelink retransmission request BSR) is all sent through the Uu link.
Since the terminal device 1 may also have another Uu transmission requirement on the Uu link, when the total amount of uplink data information transmitted by the terminal device 1 to the network device is greater than the transmission resource of the Uu link allocated currently, the terminal device may determine the transmission priority of the sidelink retransmission request BSR and the target information; and sending the sidelink retransmission request BSR and the target information according to the sending priority. Generally, data information with higher priority is transmitted preferentially, and data with lower priority waits for subsequent transmission opportunities and is transmitted according to the priority order or other transmission rules.
The target information in the first embodiment may be data from UL-CCCH, uu interface padding BSR, and other information, etc., and the second and third embodiments will describe the case where the target information is a sidelink data BSR.
Specifically, for example, when the MAC CE for configuring the grant confirmation and the sidelink retransmission request BSR need to be transmitted between the network devices of the terminal device 1, if the transmission resources of the current TTI are insufficient, it is first determined that the transmission priority of the MAC CE for configuring the grant confirmation is higher than the transmission priority of the sidelink retransmission request BSR, and the priority transmission is used for configuring the grant confirmation MAC CE, and the sidelink retransmission request BSR is transmitted in the subsequent transmission opportunity.
For another example, when the transmission resources of the current TTI are insufficient when the sidelink retransmission request BSR and the dedicated traffic channel (Dedicated Traffic Channel, DTCH) data need to be transmitted between the network devices of the terminal device 1, it is first determined that the transmission priority of the sidelink retransmission request BSR is higher than the transmission priority of the DTCH data, the sidelink retransmission request BSR and the portion of the DTCH data that can be accommodated are preferentially transmitted, and the remaining portion of the DTCH is transmitted in the subsequent transmission opportunity.
In general, the priority order in the uplink MAC PDU is strictly defined by the standard, and in order to normalize the behaviors of all terminal devices and ensure that important data information can be transmitted first, the foregoing embodiments of the present invention introduce the priority of sending the sidelink retransmission request BSR and other typical data information, and of course, without excluding the occurrence of new data types in the subsequent standardization, the priority order of the new data types and the sidelink retransmission request BSR may also be predefined.
Optionally, when determining the transmission priority of the sidelink retransmission request BSR and the target information, and sorting according to the transmission priority from high to low, if the remaining transmission resources can accommodate part of the sidelink retransmission request BSR but not all of the sidelink retransmission request BSR, the embodiment truncates the sidelink retransmission request BSR to ensure that the important sidelink retransmission request BSR content part can reach the network device as soon as possible, and the network device schedules the sidelink retransmission as soon as possible.
Generally, the priority in the sidelink retransmission request BSR is mainly determined by the priority of the highest priority logical channel included in the logical channel group corresponding to each sub-sidelink retransmission request BSR. For example, for the first sub-sidelink retransmission request BSR, its logical channel priority is 1 and 2; in the second sub-sidelink retransmission request BSR, the logical channel priority is 2 and 3, and if the number is smaller and the priority is higher, the first sub-sidelink retransmission request BSR is preferentially transmitted under the condition that the transmission resources are insufficient, and the second sub-sidelink retransmission request BSR is delayed until the next transmission resource is available for transmission.
In general, one sub-sidelink retransmission request BSR corresponds to a certain transmission process of one target, and is determined by the destination index destination index and the HARQ process ID.
The sub-sidelink retransmission request BSR may contain a transport block size of the requested retransmission. If the network device can record the transmission resource size scheduled by the destination index+harq process identifier last time, the sub-sidelink retransmission request BSR may not carry the transmission block size requested to be retransmitted, otherwise, the transmission block size requested to be retransmitted needs to be accurately carried, for example, to be accurate to 1 byte, so as to ensure retransmission efficiency.
In a specific example, the format of the sidelink retransmission request BSR MAC CE is shown in fig. 3, where the destination index is used to identify the receiving end terminal device, and if more than one transmitting end terminal device and one terminal device in fig. 3 establish sidelink transmission, different receiving end terminal devices are distinguished by different destination indexes, for example, the destination index 1 and the destination index 2 in fig. 3.
The HARQ process identity in fig. 3 carries HARQ process information between a pair of terminal devices, for example, between terminal device 1 and terminal device 2. In general, there are 8 HARQ processes, 8 bits one-to-one for 8 HARQ processes. When the bit corresponding to the HARQ process is 0, the HARQ process does not need to carry out sidelink retransmission; when the bit corresponding to the HARQ process is 1, this means that the HARQ process needs to perform sidelink retransmission, so that the terminal device may carry sidelink retransmission request BSR of multiple HARQ processes at a time.
The transport block size in fig. 3 identifies the size of the MAC transport block that needs to be retransmitted. In a preferred embodiment, the network device may record the size of the sidelink resource scheduled each time, so that after the terminal device reports the destination index and the HARQ process identifier, the network device may correspondingly schedule the size of the retransmission sidelink resource according to the size of the sidelink resource scheduled by the primary transmission. In this embodiment, the network device can know the number of transport blocks of each sub-sidelink retransmission request BSR according to the HARQ process bit map without additionally indicating the number of transport blocks.
In this embodiment, if the terminal device intercepts the sidelink retransmission request BSR, it needs to consider the highest priority data in the data block corresponding to each group of destination index+harq process identifier, and sort according to the priority, and perform the transmission of the high-priority sub sidelink retransmission request BSR preferentially. For example, in fig. 3, if the priority of the data block corresponding to the destination index 1+harq process identifier 1 is higher than the priority of the data block corresponding to the destination index 2+harq process identifier 2, the sub-sidelink retransmission request BSR corresponding to the destination index 1+harq process identifier 1 is preferentially transmitted.
Example two
When the transmission resources received by the MAC layer of the terminal equipment at the Uu interface are insufficient to accommodate all the sidelink data BSR and the sidelink retransmission request BSR, priority processing is also required to be carried out on the sidelink data BSR and the sidelink retransmission request BSR, and if necessary, the shortening of the BSR format is carried out so as to ensure that the content with high priority is transmitted preferentially.
The format of the sidelink data BSR is shown in fig. 4:
the destination index is used to indicate that the receiving end terminal device, the transmitting end terminal device in fig. 4 establishes a sidelink transmission with more than one terminal device, and different terminal devices are distinguished by different destination indexes, such as destination index 1 and destination index 2 in fig. 4.
The logical channel group identifier LCG ID is used to identify different logical channel groups, and one logical channel group may include a plurality of logical channels, and generally each logical channel has a corresponding scheduling priority.
The buffer size is used to represent the amount of sidelink data requested for transmission.
Optionally, in the sidelink retransmission request BSR shown in fig. 3, in the transport block corresponding to each destination index+harq process identifier, which data is transmitted at all, where the scheduling priority of each data, etc. may be obtained in advance by the terminal device.
In a special case, if the resources requested by the sidelink retransmission request BSR are used for retransmitting the MAC PDU, the MAC PDU includes a MAC CE, and the priority of the MAC CE is generally higher than that of the data. Of course, in other embodiments, the relative priority between the MAC CE in the sidelink link and the typical sidelink data may be further given, so that this embodiment may determine the transmission priority of the sidelink retransmission request BSR and the sidelink data BSR according to the relative priority between the MAC CE in the sidelink link and the typical sidelink data.
In this embodiment, if the total amount of transmission resources required by the sidelink retransmission request BSR and the sidelink data BSR exceeds the remaining transmission resources of the current TTI, the priority is sorted according to the highest priority corresponding to each destination index+harq process identifier, destination index+logical channel group identifier, and the high-priority sub-sidelink retransmission request BSR and sub-sidelink data BSR are preferentially transmitted.
Examples are as follows:
the sidelink data BSR includes an entry (i.e., sub sidelink data BSR) 1 and an entry 2, and the sidelink retransmission request BSR includes an entry (i.e., sub sidelink retransmission request BSR) 3 and an entry 4.
Item 1: the priority of the logical channels contained in the destination index 1+logical channel group identifier 1 is 2 and 3, and the highest priority corresponding to the entry 1 is 2;
Item 2: the priority of the logical channels contained in the destination index 2+ logical channel group identifier 2 is 2 and 3, and the highest priority corresponding to the entry 2 is 3;
item 3: the priority of the logic channel contained in the destination index 1+HARQ process identifier 1 is 3 and the priority of the MAC CE, if the MAC CE is set to have the highest priority, the highest priority corresponding to the entry 3 is 0;
item 4: the priority of the logic channel contained in the destination index 2+HARQ process identifier 2 is 4, and the highest priority corresponding to the entry 4 is 4;
determining, according to the priority of each entry, that the transmission priority order of the sidelink retransmission request BSR and the sidelink data BSR is: entry 3> entry 1> entry 2> entry 4. This embodiment can perform grouping and transmission in the order of priority described above, and the portion that cannot be accommodated is being transmitted next time.
In particular, since entry 3 has the highest priority, entry 3 will be transmitted with priority, and if entry 3 and entry 4 can be transmitted jointly without adding additional overhead, then entries 3 and 4 can be transmitted together. For example, in the above-mentioned sidelink retransmission request BSR format of fig. 3, if the transport block size field is not carried, and the destination indexes of the entries 3 and 4 are the same, that is, the destination index 3 and the destination index 4 are the same, so that different HARQ process identifications can be implemented in different positions 1 in the same bitmap, and thus the entry 4 can also be transmitted together with the entry 3, where the criterion of the transmission priorities of the sidelink retransmission request BSR and the sidelink data BSR is: and comparing the highest priority data with the priorities of other entries in all HARQ processes corresponding to the identification of the same destination.
For the format of the BSR after the truncation processing, the part of contents which cannot be transmitted with low priority can be abandoned according to the format of the original BSR. For example, the sidelink data BSR before puncturing includes four entries, and only two entries can be reported according to the priority principle, and the BSR format formed by the two entries is called a puncturing BSR format. The format of the truncated BSR including two entries may be the same as the original regular BSR initially including only two entries, except that the MAC subheader includes indication information for informing the network device that all the sidelink data BSR is reported this time, or that only a part of the content is reported due to insufficient transmission resources.
Example III
When the transmission resources received by the MAC layer of the terminal equipment at the Uu interface are insufficient to accommodate all the sidelink data BSR and the sidelink retransmission request BSR, priority processing is also required to be carried out on the sidelink data BSR and the sidelink retransmission request BSR, and if necessary, the shortening of the BSR format is carried out so as to ensure that the content with high priority is transmitted preferentially.
Optionally, if the highest priority of the entries of the sidelink data BSR and the sidelink retransmission request BSR is the same, the transmission of the sidelink retransmission request BSR may be preferentially performed, so that it is convenient to ensure that the retransmission data can be processed in time, and the time delay is reduced.
Examples are as follows:
the sidelink data BSR includes the following entry 1 and entry 2, and the sidelink retransmission request BSR includes the following entry 3.
Item 1: the priority of the logical channels contained in the destination index 1+logical channel group identifier 1 is 2 and 3, and the highest priority corresponding to the entry 1 is 2;
item 2: the priority of the logical channels contained in the destination index 2+ logical channel group identifier 2 is 3 and 4, and the highest priority corresponding to the entry 2 is 3;
item 3: the logical channel priority contained in destination index 1+harq process identification 1 is 2, and the highest priority corresponding to entry 3 is 2.
Determining, according to the priority of each entry, that the transmission priority order of the sidelink retransmission request BSR and the sidelink data BSR is: entry 3> entry 1> entry 2, the embodiment may perform grouping and transmission in the above-described priority order, and the portion that cannot be accommodated is being transmitted next time.
The method for transmitting the sidelink retransmission request BSR according to the embodiment of the present invention is described in detail above with reference to fig. 1 to 4. The terminal device according to an embodiment of the present invention will be described in detail below with reference to fig. 5.
Fig. 5 is a schematic structural diagram of a terminal device according to an embodiment of the present invention. As shown in fig. 5, the terminal device 500 includes:
The priority determining module 502 may be configured to determine a transmission priority of the sidelink retransmission request BSR and the target information;
and a sending module 504, configured to send the sidelink retransmission request BSR and the target information according to the sending priority.
The terminal equipment provided by the embodiment of the invention determines the transmission priority of the sidelink retransmission request BSR and the target information, and transmits the sidelink retransmission request BSR and the target information according to the determined transmission priority, thereby solving the problem that the terminal equipment cannot determine how to transmit the sidelink retransmission request BSR and the target information and improving the communication effectiveness.
Meanwhile, the embodiment of the invention can ensure that important information (such as a sidelink retransmission request (BSR) or target information) can be transmitted preferentially, ensure the reliability of a network equipment scheduling mode and improve the resource utilization rate and the communication system efficiency.
Optionally, as an embodiment, the target information includes a sidelink data BSR, and the determining, by the priority determining module 502, the sending priority of the sidelink retransmission request BSR and the target information includes:
determining the transmission priorities of the sidelink retransmission request BSR and the sidelink data BSR according to the priorities of the logical channels corresponding to the sidelink retransmission request BSR and the priorities of the logical channels corresponding to the sidelink data BSR; or (b)
And determining the transmission priorities of the sidelink retransmission request BSR and the sidelink data BSR according to the priorities of the logical channel groups corresponding to the sidelink retransmission request BSR and the priorities of the logical channel groups corresponding to the sidelink data BSR.
Optionally, as an embodiment, the target information includes a sidelink data BSR, and the determining, by the priority determining module 502, the sending priority of the sidelink retransmission request BSR and the target information includes:
if the priority of the logical channel corresponding to the sidelink retransmission request BSR is equal to the priority of the logical channel corresponding to the sidelink data BSR, determining that the transmission priority of the sidelink retransmission request BSR is higher than the transmission priority of the sidelink data BSR; or (b)
And if the priority of the logical channel group corresponding to the sidelink retransmission request BSR and the priority of the logical channel group corresponding to the sidelink data BSR are equal, determining that the transmission priority of the sidelink retransmission request BSR is higher than the transmission priority of the sidelink data BSR.
Optionally, as an embodiment, the target information includes a sidelink data BSR, and the determining, by the priority determining module 502, the sending priority of the sidelink retransmission request BSR and the target information includes:
And if the resources requested by the sidelink retransmission request BSR are used for retransmitting the MAC protocol data unit PDU, wherein the MAC PDU comprises the MAC control unit CE, determining that the transmission priority of the sidelink retransmission request BSR is higher than that of the sidelink data BSR.
Optionally, as an embodiment, the target information includes a sidelink data BSR, and the sending module 504 sends the sidelink retransmission request BSR and the target information according to the sending priority includes:
if the transmission priority of the sidelink retransmission request BSR is higher than that of the sidelink data BSR, preferentially transmitting the sidelink retransmission request BSR; or (b)
And if the transmission priority of the sidelink data BSR is higher than that of the sidelink retransmission request BSR, preferentially transmitting the sidelink data BSR.
Optionally, as an embodiment, the terminal device 500 further includes a processing module (not shown) that may be configured to
And if the total amount of transmission resources required by the sidelink retransmission request BSR and the sidelink data BSR exceeds the residual transmission resources of the current transmission time interval TTI, performing puncturing processing on the sidelink retransmission request BSR and the BSR to be punctured in the sidelink data BSR according to the transmission priority of the sidelink retransmission request BSR, the transmission priority of the sidelink data BSR and the residual transmission resources.
Optionally, as an embodiment, the target information includes a sidelink data BSR, and the sending module 504 sends the sidelink retransmission request BSR and the target information according to the sending priority includes:
preferentially sending the truncated sidelink retransmission request BSR and the truncated sidelink data BSR, wherein the BSR to be truncated comprises the sidelink retransmission request BSR and the sidelink data BSR; or (b)
Preferentially sending the sidelink retransmission request BSR and the sidelink data BSR after truncation processing, wherein the BSR to be truncated comprises the sidelink data BSR; or (b)
And preferentially sending the sidelink data BSR and the sidelink retransmission request BSR after truncation processing, wherein the BSR to be truncated comprises the sidelink retransmission request BSR.
Optionally, as an embodiment, the MAC subheader corresponding to the truncated sidelink retransmission request BSR includes indication information, where the indication information is used to indicate that the format of the truncated sidelink retransmission request BSR is a truncated BSR format.
Optionally, as an embodiment, the determining, by the priority determining module 502, the sending priority of the sidelink retransmission request BSR and the target information includes:
If the target information is the first type information, the sending priority of the target information is higher than the sending priority of the sidelink retransmission request BSR; or (b)
If the target information is the second type information, the sending priority of the target information is lower than the sending priority of the sidelink retransmission request BSR;
wherein the first type of information includes at least one of:
cell radio network temporary identity C-RNTI MAC CE;
data from an uplink common control channel UL-CCCH;
reporting the data volume and the power margin to the MAC CE;
the configured authorization confirms the MAC CE;
semi-persistent scheduling, SPS, acknowledgement, MAC CE;
automatically uplink confirming the MAC CE;
filling Uu interface BSR MAC CEs outside the BSR; and
a power headroom MAC CE, an extended power headroom MAC CE, a dual connection power headroom MAC CE, a single entry power headroom MAC CE, or a multi-entry power headroom MAC CE;
the second type of information includes at least one of:
data from a target logical channel, the data from the target logical channel not including data from the UL-CCCH;
recommended bit rate query MAC CE;
uu interface fills BSR MAC CE;
uu interface padding BSR; and
the sidelink fills the BSR.
Optionally, as an embodiment, the terminal device 500 further includes a processing module (not shown) that may be configured to
And if the total amount of transmission resources required by the sidelink retransmission request BSR and the target information exceeds the residual transmission resources of the current TTI and the transmission priority of the target information is higher than the transmission priority of the sidelink retransmission request BSR, truncating the sidelink retransmission request BSR according to the residual transmission resources.
Optionally, as an embodiment, the target information includes a sidelink data BSR, and the sending module 504 sends the sidelink retransmission request BSR and the target information according to the sending priority includes:
and preferentially sending the target information and the sidelink retransmission request BSR after the truncation processing.
The terminal device 500 according to the embodiment of the present invention may refer to the flow of the method 100 corresponding to the embodiment of the present invention, and each unit/module in the terminal device 500 and the other operations and/or functions described above are respectively for implementing the corresponding flow in the method 100, and can achieve the same or equivalent technical effects, which are not described herein for brevity.
Fig. 6 is a block diagram of a terminal device according to another embodiment of the present invention. The terminal device 600 shown in fig. 6 includes: at least one processor 601, a memory 602, at least one network interface 604, and a user interface 603. The various components in terminal device 600 are coupled together by a bus system 605. It is understood that the bus system 605 is used to enable connected communications between these components. The bus system 605 includes a power bus, a control bus, and a status signal bus in addition to a data bus. But for clarity of illustration the various buses are labeled as bus system 605 in fig. 6.
The user interface 603 may include, among other things, a display, a keyboard, a pointing device (e.g., a mouse, a trackball), a touch pad, or a touch screen, etc.
It is to be appreciated that the memory 602 in embodiments of the invention may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (Double Data Rate SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DRRAM). The memory 602 of the system and method described in embodiments of the invention is intended to comprise, without being limited to, these and any other suitable types of memory.
In some implementations, the memory 602 stores the following elements, executable modules or data structures, or a subset thereof, or an extended set thereof: an operating system 6021 and application programs 6022.
The operating system 6021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, for implementing various basic services and processing hardware-based tasks. The application 6022 includes various application programs such as a Media Player (Media Player), a Browser (Browser), and the like for realizing various application services. The program for implementing the method of the embodiment of the present invention may be included in the application 6022.
In the embodiment of the present invention, the terminal device 600 further includes: a computer program stored on the memory 602 and executable on the processor 601, which when executed by the processor 601 performs the steps of the method 100 as follows.
The method disclosed in the above embodiment of the present invention may be applied to the processor 601 or implemented by the processor 601. The processor 601 may be an integrated circuit chip with signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in the processor 601 or instructions in the form of software. The processor 601 may be a general purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be embodied directly in the execution of a hardware decoding processor, or in the execution of a combination of hardware and software modules in a decoding processor. The software modules may be located in a computer readable storage medium well known in the art such as random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, and the like. The computer readable storage medium is located in the memory 602, and the processor 601 reads information in the memory 602 and performs the steps of the above method in combination with its hardware. In particular, the computer readable storage medium has stored thereon a computer program which, when executed by the processor 601, performs the steps of the method 100 embodiments described above.
It is to be understood that the embodiments of the application described herein may be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof. For a hardware implementation, the processing units may be implemented within one or more application specific integrated circuits (Application Specific Integrated Circuits, ASIC), digital signal processors (Digital Signal Processing, DSP), digital signal processing devices (DSP devices, DSPD), programmable logic devices (Programmable Logic Device, PLD), field programmable gate arrays (Field-Programmable Gate Array, FPGA), general purpose processors, controllers, microcontrollers, microprocessors, other electronic units designed to perform the functions described herein, or a combination thereof.
For a software implementation, the techniques described in embodiments of the present application may be implemented by modules (e.g., procedures, functions, and so on) that perform the functions described in embodiments of the present application. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.
The terminal device 600 can implement each process implemented by the terminal device in the foregoing embodiment, and can achieve the same or equivalent technical effects, and for avoiding repetition, a detailed description is omitted herein.
The embodiment of the present invention further provides a computer readable storage medium, on which a computer program is stored, where the computer program when executed by a processor implements each process of the foregoing method embodiment 100, and the same technical effects can be achieved, and for avoiding repetition, a detailed description is omitted herein. Wherein the computer readable storage medium is selected from Read-Only Memory (ROM), random access Memory (Random Access Memory, RAM), magnetic disk or optical disk.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present invention.
The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the claims, which are to be protected by the present invention.

Claims (9)

1. A method for sending a buffer status report BSR of a sidelink retransmission request, the method being performed by a terminal device, the method comprising:
determining the transmission priority of a sidelink retransmission request (BSR) and target information;
transmitting the sidelink retransmission request BSR and the target information according to the transmission priority;
the target information includes a sidelink data BSR, and before the sidelink retransmission request BSR and the target information are sent according to the sending priority, the method further includes: if the total amount of transmission resources required by the sidelink retransmission request BSR and the sidelink data BSR exceeds the residual transmission resources of the current transmission time interval TTI, performing puncturing processing on the sidelink retransmission request BSR and the BSR to be punctured in the sidelink data BSR according to the transmission priority of the sidelink retransmission request BSR, the transmission priority of the sidelink data BSR and the residual transmission resources;
The sending the sidelink retransmission request BSR and the target information according to the sending priority includes: preferentially sending the truncated sidelink retransmission request BSR and the truncated sidelink data BSR, wherein the BSR to be truncated comprises the sidelink retransmission request BSR and the sidelink data BSR; or, preferentially sending the sidelink retransmission request BSR and the sidelink data BSR after truncation processing, wherein the BSR to be truncated comprises the sidelink data BSR; or, preferentially sending the sidelink data BSR and the sidelink retransmission request BSR after truncation processing, wherein the BSR to be truncated comprises the sidelink retransmission request BSR.
2. The method of claim 1, wherein the target information comprises a sidelink data BSR, and wherein determining a transmission priority of the sidelink retransmission request BSR and the target information comprises:
determining the transmission priorities of the sidelink retransmission request BSR and the sidelink data BSR according to the priorities of the logical channels corresponding to the sidelink retransmission request BSR and the priorities of the logical channels corresponding to the sidelink data BSR; or (b)
And determining the transmission priorities of the sidelink retransmission request BSR and the sidelink data BSR according to the priorities of the logical channel groups corresponding to the sidelink retransmission request BSR and the priorities of the logical channel groups corresponding to the sidelink data BSR.
3. The method of claim 1, wherein the target information comprises a sidelink data BSR, and wherein determining a transmission priority of the sidelink retransmission request BSR and the target information comprises:
if the priority of the logical channel corresponding to the sidelink retransmission request BSR is equal to the priority of the logical channel corresponding to the sidelink data BSR, determining that the transmission priority of the sidelink retransmission request BSR is higher than the transmission priority of the sidelink data BSR; or (b)
And if the priority of the logical channel group corresponding to the sidelink retransmission request BSR and the priority of the logical channel group corresponding to the sidelink data BSR are equal, determining that the transmission priority of the sidelink retransmission request BSR is higher than the transmission priority of the sidelink data BSR.
4. The method of claim 1, wherein the target information comprises a sidelink data BSR, and wherein determining a transmission priority of the sidelink retransmission request BSR and the target information comprises:
And if the resources requested by the sidelink retransmission request BSR are used for retransmitting the MAC protocol data unit PDU, wherein the MAC PDU comprises the MAC control unit CE, determining that the transmission priority of the sidelink retransmission request BSR is higher than that of the sidelink data BSR.
5. The method according to any one of claims 2 to 4, wherein said transmitting the sidelink retransmission request BSR and the sidelink data BSR according to the transmission priority comprises:
if the transmission priority of the sidelink retransmission request BSR is higher than that of the sidelink data BSR, preferentially transmitting the sidelink retransmission request BSR; or (b)
And if the transmission priority of the sidelink data BSR is higher than that of the sidelink retransmission request BSR, preferentially transmitting the sidelink data BSR.
6. The method of claim 1, wherein,
the MAC sub-header corresponding to the truncated sidelink retransmission request BSR comprises indication information, wherein the indication information is used for indicating that the format of the truncated sidelink retransmission request BSR is a truncated BSR format.
7. A terminal device, comprising:
The priority determining module is used for determining the sending priority of the sidelink retransmission request BSR and the target information;
a sending module, configured to send the sidelink retransmission request BSR and the target information according to the sending priority;
the target information comprises a sidelink data BSR, and the terminal equipment further comprises a processing module for: if the total amount of transmission resources required by the sidelink retransmission request BSR and the sidelink data BSR exceeds the residual transmission resources of the current TTI, performing puncturing processing on the sidelink retransmission request BSR and the BSR to be punctured in the sidelink data BSR according to the transmission priority of the sidelink retransmission request BSR, the transmission priority of the sidelink data BSR and the residual transmission resources;
the sending module is specifically configured to: preferentially sending the truncated sidelink retransmission request BSR and the truncated sidelink data BSR, wherein the BSR to be truncated comprises the sidelink retransmission request BSR and the sidelink data BSR; or, preferentially sending the sidelink retransmission request BSR and the sidelink data BSR after truncation processing, wherein the BSR to be truncated comprises the sidelink data BSR; or, preferentially sending the sidelink data BSR and the sidelink retransmission request BSR after truncation processing, wherein the BSR to be truncated comprises the sidelink retransmission request BSR.
8. A terminal device, comprising: memory, a processor and a computer program stored on the memory and executable on the processor, which when executed by the processor, performs the steps of the method according to any one of claims 1 to 6.
9. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, implements the steps of the method according to any one of claims 1 to 6.
CN201910229465.7A 2019-03-25 2019-03-25 Method for sending sidelink retransmission request (BSR) and terminal equipment Active CN111107583B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910229465.7A CN111107583B (en) 2019-03-25 2019-03-25 Method for sending sidelink retransmission request (BSR) and terminal equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910229465.7A CN111107583B (en) 2019-03-25 2019-03-25 Method for sending sidelink retransmission request (BSR) and terminal equipment

Publications (2)

Publication Number Publication Date
CN111107583A CN111107583A (en) 2020-05-05
CN111107583B true CN111107583B (en) 2023-12-08

Family

ID=70420376

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910229465.7A Active CN111107583B (en) 2019-03-25 2019-03-25 Method for sending sidelink retransmission request (BSR) and terminal equipment

Country Status (1)

Country Link
CN (1) CN111107583B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113676303B (en) * 2020-05-15 2023-02-03 维沃移动通信有限公司 Transmission processing method and device and electronic equipment
CN113950019A (en) * 2020-07-17 2022-01-18 华为技术有限公司 Resource scheduling method, communication device and system

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013082785A1 (en) * 2011-12-08 2013-06-13 St-Ericsson Sa Harq-based data transmission method and apparatus, user equipment, computer program and storage medium
CN106575995A (en) * 2014-09-23 2017-04-19 Lg电子株式会社 Method for priority handling for buffer status reporting in a d2d communication system and device therefor
CN107950047A (en) * 2015-08-12 2018-04-20 Lg电子株式会社 For performing the method and its device of buffer state reports in D2D communication systems
WO2018075828A1 (en) * 2016-10-19 2018-04-26 Convida Wireless, Llc Apparatus
WO2018080561A1 (en) * 2016-10-25 2018-05-03 Intel Corporation Buffer status reporting in 5g nr-things sidelink communications
WO2018171540A1 (en) * 2017-03-23 2018-09-27 中兴通讯股份有限公司 Information transmission method, device, system and storage medium
KR20180136878A (en) * 2017-06-15 2018-12-26 주식회사 케이티 Methods for configurationing a buffer status report for next-generation mobile communication And Apparatuses thereof

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013082785A1 (en) * 2011-12-08 2013-06-13 St-Ericsson Sa Harq-based data transmission method and apparatus, user equipment, computer program and storage medium
CN106575995A (en) * 2014-09-23 2017-04-19 Lg电子株式会社 Method for priority handling for buffer status reporting in a d2d communication system and device therefor
CN107950047A (en) * 2015-08-12 2018-04-20 Lg电子株式会社 For performing the method and its device of buffer state reports in D2D communication systems
WO2018075828A1 (en) * 2016-10-19 2018-04-26 Convida Wireless, Llc Apparatus
WO2018080561A1 (en) * 2016-10-25 2018-05-03 Intel Corporation Buffer status reporting in 5g nr-things sidelink communications
WO2018171540A1 (en) * 2017-03-23 2018-09-27 中兴通讯股份有限公司 Information transmission method, device, system and storage medium
KR20180136878A (en) * 2017-06-15 2018-12-26 주식회사 케이티 Methods for configurationing a buffer status report for next-generation mobile communication And Apparatuses thereof

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
"Introduction of L2 Latency reduction techqniues";Ericsson;《3GPP TSG-RAN WG2 Meeting #95 R2-165346》;20160826;第5.4.3节 *
CATT.R2-1802116 "PDCP duplication for eV2X".3GPP tsg_ran\WG2_RL2.2018,(第TSGR2_101期),全文. *
Ericsson."Introduction of L2 Latency reduction techqniues".《3GPP TSG-RAN WG2 Meeting #95 R2-165346》.2016, *
Huawei, HiSilicon.R2-1807429 "Discussion on SL BSR reporting for Mode 3 packet duplication".3GPP tsg_ran\WG2_RL2.2018,(第TSGR2_102期),全文. *
Lenovo, Motorola Mobility.R2-1807897 "Remaining details of Buffer status reporting for packet duplication in sidelink".3GPP tsg_ran\WG2_RL2.2018,(第TSGR2_102期),全文. *

Also Published As

Publication number Publication date
CN111107583A (en) 2020-05-05

Similar Documents

Publication Publication Date Title
US20220150871A1 (en) Ue information reporting method, internet of vehicles resource configuration method, and apparatuses
CN110034885B (en) Method and equipment for sending uplink control information
CN112888031B (en) Method, device and terminal for service transmission
WO2018133839A1 (en) Power allocation method and apparatus for uplink channel
EP3598818B1 (en) Data transmission methods, terminal device, and network device
US9155070B2 (en) Method and apparatus for transmitting uplink data burst in wireless connection system
WO2020087365A1 (en) Methods and devices for sending and configuring sidelink data
US10849149B2 (en) Scheduling request triggering method, apparatus, and system
US11101935B2 (en) Apparatus and method for transmitting packet data units
KR20210037695A (en) Method and apparatus for transmitting data, and communication system
CN111031580B (en) Method and apparatus for transmitting feedback information
CN115380596A (en) Transmission method and device for automatic retransmission request acknowledgement feedback information supporting multicast service
CN111107583B (en) Method for sending sidelink retransmission request (BSR) and terminal equipment
CN110661603A (en) PUCCH transmission method, terminal equipment and network equipment
CN110858998A (en) Uplink signal transmission processing method and terminal equipment
US20230094455A1 (en) Communication method, apparatus, device, and readable storage medium
CN111107654B (en) Uplink transmission method and terminal equipment
CN113747537A (en) Priority determination method and device
CN114930935A (en) Transmission method, device and equipment of uplink control information and storage medium
CN111800237B (en) Data sending method, data receiving method and equipment
CN111600689B (en) SRS transmission method and equipment
WO2021035541A1 (en) Data transmission method and related device
CN113726484A (en) HARQ-ACK feedback method, terminal equipment and network equipment for hybrid automatic repeat request response
CN112492695B (en) Method and device for transmitting sidelink BSR
RU2791300C2 (en) Method, equipment and service transfer terminal

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant