CN111757540A - Method and terminal for triggering resource reselection - Google Patents

Method and terminal for triggering resource reselection Download PDF

Info

Publication number
CN111757540A
CN111757540A CN201910253448.7A CN201910253448A CN111757540A CN 111757540 A CN111757540 A CN 111757540A CN 201910253448 A CN201910253448 A CN 201910253448A CN 111757540 A CN111757540 A CN 111757540A
Authority
CN
China
Prior art keywords
resource
window
sub
transmission
service
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.)
Granted
Application number
CN201910253448.7A
Other languages
Chinese (zh)
Other versions
CN111757540B (en
Inventor
赵丽
赵锐
房家奕
冯媛
胡金玲
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.)
Datang Gaohong Zhilian Technology (Chongqing) Co.,Ltd.
Original Assignee
GOHIGH DATA NETWORKS TECHNOLOGY 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 GOHIGH DATA NETWORKS TECHNOLOGY CO LTD filed Critical GOHIGH DATA NETWORKS TECHNOLOGY CO LTD
Priority to CN201910253448.7A priority Critical patent/CN111757540B/en
Publication of CN111757540A publication Critical patent/CN111757540A/en
Application granted granted Critical
Publication of CN111757540B publication Critical patent/CN111757540B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
    • H04W74/0833—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
    • H04W74/0833—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure
    • H04W74/0841—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure with collision treatment
    • H04W74/085—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure with collision treatment collision avoidance

Landscapes

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

Abstract

The invention provides a method and a terminal for triggering resource reselection, wherein the method comprises the following steps: obtaining a first sub-window in a resource selection window corresponding to a first service transmission block; receiving transmission content in the first sub-window; and triggering resource reselection when determining that resource collision occurs according to the resources occupied by the transmission content. The invention can support various types of service transmission blocks and can avoid the problems of reduced system reliability and low resource utilization rate caused by resource collision.

Description

Method and terminal for triggering resource reselection
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and a terminal for triggering resource reselection.
Background
There are various types of traffic transmission blocks in the internet of vehicles, for example: the basic road safety application has the characteristics of periodicity, predictable size of a service transmission block and the like; for example, some event-triggered service transmission blocks have the characteristics of non-periodicity, unpredictable service transmission block size and the like.
As shown in fig. 1, a Carrier Sense Multiple Access with collision avoidance (CSMA/CA) mechanism is adopted in the local area network/metropolitan area network Standards Committee (LAN/MAN Standards Committee, IEEE802 or LMSC) 11p, and after the Carrier Sense is busy, Access is delayed by a random backoff manner to avoid resource collision, but for the periodic characteristics of road security application in the car networking, the mechanism has the disadvantages of low reliability and low spectrum utilization rate. In fig. 1, Distributed Inter-frame Spacing (diffs), Short Inter Frame Spacing (SIFS), and centralized Inter frame Spacing (PIFS).
A Long Term Evolution technology-vehicle wireless communication technology (Long Term Evolution to X, LTE-V2X) researched by the third Generation Partnership Project (3rd Generation Partnership Project, 3GPP) R14/R15 considers the characteristics of periodicity of basic road security application, predictable size of a service packet and the like, and provides information such as resource occupation information and received signal power/received energy for a resource selection process by adopting a sensing reception and semi-persistent scheduling mode. Sensing and One-time transmission (One shot) are adopted for aperiodic services, but the LTE-V2X technology only supports broadcast services (broadcast) and does not support unicast (unicast) and multicast (groupcast) services.
As shown in fig. 2, in 3GPP R14/R15, a fixed sensing (sensing) window of 1 second is set in consideration of supporting a periodic traffic transport block with a longest traffic period of 1 second. P in FIG. 2stepIs a periodic scaling factor. In the perceptual window, a Transport Block (TB) receives information including: the control information may also be referred to as scheduling task (SA) and DATA information (DATA). In LTE-V2X, according to the sub-channels configured by the system, the RSSI (Received Signal Strength Indication) of each sub-channel is measured in the sensing window, and the RSSI is smoothed according to the period of transmitting the service transport block. In the process of resource selection, mapping is carried out from the sensing window to the resource selection window and the resource behind the resource selection window, if the resource is mappedAnd if the node is occupied, the occupied resources and the transmission resources of the node are excluded, and 20% of the lowest resources are selected for random resource selection according to RSSI sequencing.
After the initial/retransmission resource is selected at the time n of the arrival of the first service transmission block, no sensing processing is performed until the initial/retransmission time arrives. If a periodic or aperiodic second service transport block occurs between the leading edge of the resource selection window and the initial/retransmission time, the initial/retransmission resource of the second service transport block collides with the initial/retransmission resource selected by the first service transport block, which may result in reduced system reliability and low resource utilization rate.
Disclosure of Invention
The invention provides a method and a terminal for triggering resource reselection, which solve the problems of single type of service transmission blocks supported in the vehicle wireless communication technology, reduced system reliability and low resource utilization rate caused by resource collision.
In a first aspect, an embodiment of the present invention provides a method for triggering resource reselection, where the method is applied to a terminal and includes:
obtaining a first sub-window in a resource selection window corresponding to a first service transmission block;
receiving transmission content in the first sub-window;
and triggering resource reselection when determining that resource collision occurs according to the resources occupied by the transmission content.
Preferably, the obtaining the first sub-window comprises:
according to the arrival time n of the first service transmission block1First processing delay T of terminal1The last retransmission sending time n corresponding to the first service transmission block2And a second processing delay T of the terminal3And obtaining the first sub-window.
Preferably, the time domain range of the first sub-window is: [ n + T ]1，n2-T3]。
Preferably, T30, or T3＝T1。
Preferably, T3Configured or pre-arranged by higher layersConfiguration or by system predefined parameters.
Preferably, when the resource reselection is triggered, the last retransmission time corresponding to the first service transport block is the last retransmission time after the reselection.
Preferably, the transmission content comprises at least one of:
the first transmission content of the initial transmission or the retransmission of the second service transmission block which is not transmitted in the sensing window before the first service transmission block arrives;
and transmitting the first transmission content or the second transmission content of the retransmission of the third service transmission block in the first sub-window.
Preferably, the second service transport block or the third service transport block is one of the following:
a periodic service transmission block;
and a non-periodic traffic transmission block.
Preferably, the first transmission content or the second transmission content comprises at least one of:
data information;
control information SA;
a preamble;
and feeding back the information.
Preferably, the resource collision comprises at least one of:
a first associated resource indicated by a first SA successfully decoded in the first sub-window collides with an initial transmission resource or a retransmission resource selected by the first service transmission block;
the second associated resource reserved by the first SA next time collides with the initial transmission resource or the retransmission resource selected by the first service transmission block;
and when the first service transmission block is a periodic service transmission block, the third associated resource reserved by the first SA for multiple times collides with the initial transmission resource or the retransmission resource reserved by the first service transmission block for multiple times.
Preferably, when the first service transport block is an aperiodic service transport block, the initial transmission resource or the retransmission resource of the first service transport block is selected in the resource selection window.
Preferably, the first or second or third associated resources comprise at least one of:
occupied time-frequency resources of first data information, wherein the first data information corresponds to the first SA;
occupying time-frequency resources of the SA associated with the first data information;
time-frequency resources of a lead code associated with the first data information are occupied;
and occupying time-frequency resources of the feedback information associated with the first data information.
Preferably, after receiving the transmission content in the first sub-window, the method further includes:
and if the Reference Signal Received Power (RSRP) of the first data information exceeds a first threshold, determining that the resource of the transmission content is occupied.
Preferably, after obtaining the first sub-window, the method further includes:
and recording the received energy intensity indicator RSSI of the sub-channel of the periodic service transmission block and the service period corresponding to the periodic service transmission block in the first sub-window.
In a second aspect, an embodiment of the present invention further provides a terminal, including: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor implementing the following steps when executing the computer program:
obtaining a first sub-window in a resource selection window corresponding to a first service transmission block;
receiving transmission content in the first sub-window;
and triggering resource reselection when determining that resource collision occurs according to the resources occupied by the transmission content.
Preferably, the processor, when executing the computer program, implements the steps of:
according to the arrival time n of the first service transmission block1First processing delay T of terminal1The last retransmission sending time n corresponding to the first service transmission block2And a second processing delay T of the terminal3And obtaining the first sub-window.
Preferably, the time domain range of the first sub-window is: [ n + T ]1，n2-T3]。
Preferably, T30, or T3＝T1。
Preferably, T3Configured or pre-configured by higher layers or determined by system predefined parameters.
Preferably, when the resource reselection is triggered, the last retransmission time corresponding to the first service transport block is the last retransmission time after the reselection.
Preferably, the transmission content comprises at least one of:
the first transmission content of the initial transmission or the retransmission of the second service transmission block which is not transmitted in the sensing window before the first service transmission block arrives;
and transmitting the first transmission content or the second transmission content of the retransmission of the third service transmission block in the first sub-window.
Preferably, the second service transport block or the third service transport block is one of the following:
a periodic service transmission block;
and a non-periodic traffic transmission block.
Preferably, the first transmission content or the second transmission content comprises at least one of:
data information;
control information SA;
a preamble;
and feeding back the information.
Preferably, the resource collision comprises at least one of:
a first associated resource indicated by a first SA successfully decoded in the first sub-window collides with an initial transmission resource or a retransmission resource selected by the first service transmission block;
the second associated resource reserved by the first SA next time collides with the initial transmission resource or the retransmission resource selected by the first service transmission block;
and when the first service transmission block is a periodic service transmission block, the third associated resource reserved by the first SA for multiple times collides with the initial transmission resource or the retransmission resource reserved by the first service transmission block for multiple times.
Preferably, when the first service transport block is an aperiodic service transport block, the initial transmission resource or the retransmission resource of the first service transport block is selected in the resource selection window.
Preferably, the first or second or third associated resources comprise at least one of:
occupied time-frequency resources of first data information, wherein the first data information corresponds to the first SA;
occupying time-frequency resources of the SA associated with the first data information;
time-frequency resources of a lead code associated with the first data information are occupied;
and occupying time-frequency resources of the feedback information associated with the first data information.
Preferably, the processor, when executing the computer program, implements the steps of:
and if the Reference Signal Received Power (RSRP) of the first data information exceeds a first threshold, determining that the resource of the transmission content is occupied.
Preferably, the processor, when executing the computer program, implements the steps of:
and recording the received energy intensity indicator RSSI of the sub-channel of the periodic service transmission block and the service period corresponding to the periodic service transmission block in the first sub-window.
In a third aspect, an embodiment of the present invention further provides a terminal, including:
an obtaining module, configured to obtain a first sub-window in a resource selection window corresponding to a first service transport block;
a receiving module, configured to receive transmission content in the first sub-window;
and the triggering module is used for triggering resource reselection when determining that resource collision occurs according to the resources occupied by the transmission content.
In a fourth aspect, the present invention further provides 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 for triggering resource reselection as described above.
The technical scheme of the invention has the beneficial effects that:
in the embodiment of the invention, a first sub-window is obtained in a resource selection window corresponding to a first service transmission block; receiving transmission content in the first sub-window; according to the resources occupied by the transmission content, when resource collision is determined, resource reselection is triggered so as to avoid reduction of system reliability caused by resource collision and low resource utilization rate; and the scheme can support various types of service transmission modules, such as: the method can support the periodic service transmission blocks in the 5G NR V2X, which may include the predictable size of the service transmission block, the unpredictable size of the service transmission block of the non-periodic service transmission block, and the like, and can also support the unicast and multicast service transmission blocks in the 5G NR V2X.
Drawings
FIG. 1 is a diagram illustrating a CSMA/CA basic channel access procedure of IEEE 802.11 p;
FIG. 2 shows a 3GPP LTE-V2X resource selection timing diagram;
FIG. 3 is a flow chart of a method of triggering resource reselection according to an embodiment of the present invention;
FIG. 4 is a diagram illustrating one example of mapping received transmissions in a first sub-window to resources in a resource selection window;
FIG. 5 is a second exemplary illustration of mapping the received transmission in the first sub-window to resources in the resource selection window;
fig. 6 is a second flowchart of a method for triggering resource reselection according to an embodiment of the present invention;
fig. 7 shows one of the configuration block diagrams of a terminal of the embodiment of the present invention;
fig. 8 shows a second block diagram of the terminal according to the embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments. In the following description, specific details such as specific configurations and components are provided only to help the full understanding of the embodiments of the present invention. Thus, it will be apparent to those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the invention. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.
It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
In various embodiments of the present invention, it should be understood that the sequence numbers of the following processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
In addition, the terms "system" and "network" are often used interchangeably herein.
In the embodiments provided herein, it should be understood that "B corresponding to a" means that B is associated with a from which B can be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may be determined from a and/or other information.
Specifically, the embodiment of the present invention provides a method for triggering resource reselection, which solves the problems of single service transport block type supported in the vehicular wireless communication technology, and low system reliability and low resource utilization rate due to resource collision.
First embodiment
As shown in fig. 3, an embodiment of the present invention provides a method for triggering resource reselection, which specifically includes the following steps:
step 31: and obtaining a first sub-window in a resource selection window corresponding to the first service transmission block.
Specifically, the periodic service transport blocks that need to be supported in the 5G New air interface (New Radio, NR) V2X may include: the size of the service transmission block can be predicted and the size of the service transmission block can not be predicted; the size of a service transmission block of an aperiodic service transmission block is unpredictable, and the like, and a 5G NR V2X needs to support unicast and multicast service transmission blocks, and in order to improve reliability, a hybrid automatic Repeat reQuest (HARQ) feedback mechanism is adopted. To support fast access to reduce resource collision, a preamble access mechanism may be employed.
The NR needs to support a low-delay periodic service transmission block, and the delay can reach 3ms at least; the aperiodic traffic transport block has burstiness, and the sizes of the periodic transport block and the aperiodic traffic transport block may vary. The time domain range of the sensing window is optionally set to be [ n-1000, n-1], and the sensing window is suitable for regular periodic resource reservation and plays a role in relatively long-term resource reservation and prediction. And selecting resources at the arrival time n of the service transport block, wherein a resource selection window is set to be [ n + T1, n + T2], T1 is the receiving delay of the terminal and is determined by the terminal capability, and T2 is related to the sending delay of the service transport block.
In a resource selection window corresponding to a first service transport block, a first sub-window is obtained, for example, the first sub-window is a short-term sensing (STS) window.
Optionally, the step of obtaining the first sub-window may specifically include:
according to the arrival time n of the first service transmission block1First processing delay T of terminal1The last retransmission sending time n corresponding to the first service transmission block2And a second processing delay T of the terminal3Obtained byThe first sub-window.
Wherein the first processing time delay T1The time delay of the receiving process of the terminal can be, or the time delay of the sending and receiving process of the terminal can be; second processing delay T3The time delay may be a reception processing time delay of the terminal, a transmission processing time delay of the terminal, or a transmission and reception processing time delay of the terminal.
When the resource reselection is triggered, the last retransmission sending time corresponding to the first service transmission block is the reselected last retransmission sending time, so that the lower edge of the first sub-window is updated according to the reselected last retransmission sending time when the resource reselection is triggered.
Specifically, the time n may be determined according to the arrival time of the first service transport block1And a first processing delay T of the terminal1Determining the upper edge of the first sub-window; according to the last retransmission sending time n corresponding to the first service transmission block2And a second processing delay T of the terminal3And determining the lower edge of the first sub-window.
Optionally, the time domain range of the first sub-window is: [ n + T ]1，n2-T3]。
Wherein, T30, or T3＝T1。T3Configured or pre-configured by higher layers or determined by system predefined parameters. Specifically, the step 31 may be implemented as follows:
the first method is as follows: at T3In case of 0, the step of obtaining the first sub-window may include:
according to the arrival time n of the first service transmission block1First time delay T of terminal1And the last retransmission sending time n corresponding to the first service transmission block2And obtaining the first sub-window.
Specifically, the time n may be determined according to the arrival time of the first service transport block1And a first processing delay T of the terminal1Determining the upper edge of the first sub-window; according to the last retransmission corresponding to the first service transmission blockSending time n2And determining the lower edge of the first sub-window.
Optionally, the time domain range of the first sub-window is: [ n ] of1+T1，n2]。
Further, when the resource reselection is triggered, the last retransmission time corresponding to the first service transport block is the reselected last retransmission time, so as to ensure that the lower edge of the first sub-window is updated according to the reselected last retransmission time when the resource reselection is triggered.
The second method comprises the following steps: at T3＝T1In this case, the step of obtaining the first sub-window may include:
according to the arrival time n of the first service transmission block1First processing delay T of terminal1The last retransmission sending time n corresponding to the first service transmission block2And a second processing delay T of the terminal3＝T1And obtaining the first sub-window.
Specifically, the time n may be determined according to the arrival time of the first service transport block1And a first processing delay T of the terminal1Determining the upper edge of the first sub-window; according to the last retransmission sending time n corresponding to the first service transmission block2And a second processing delay T of the terminal3＝T1And determining the lower edge of the first sub-window.
Optionally, the time domain range of the first sub-window is: [ n + T ]1，n2-T3]Or [ n + T1，n2-T1]。
Wherein, T3May be determined by higher layer configuration or pre-configured or system-customized parameters.
Further, when the resource reselection is triggered, the last retransmission time corresponding to the first service transport block is the reselected last retransmission time, so as to ensure that the lower edge of the first sub-window is updated according to the reselected last retransmission time when the resource reselection is triggered.
Step 32: and receiving transmission content in the first sub-window.
Optionally, the transmission content includes at least one of:
the first transmission content of the initial transmission or the retransmission of the second service transmission block which is not transmitted in the sensing window before the first service transmission block arrives;
and transmitting the first transmission content or the second transmission content of the retransmission of the third service transmission block in the first sub-window.
The second traffic transmission block may be a periodic traffic transmission block or an aperiodic traffic transmission block; the third traffic transmission block may be a periodic traffic transmission block or an aperiodic traffic transmission block.
The first transmission content includes: at least one of data information, SA, preamble, feedback information; the second transmission content includes: at least one of data information, SA, preamble, feedback information.
Specifically, the transmission content may be initial transmission data information of a second service transmission block that is not transmitted in a sensing window before the first service transmission block arrives, or retransmitted data information/SA/preamble/feedback information; the first transmission data information/SA/preamble code/feedback information of the periodic service transmission block in the first sub-window or the retransmission data information/SA/preamble code/feedback information can also be used; the first transmission data information/SA/preamble/feedback information of the aperiodic traffic transport block in the first sub-window, or the retransmission data information/SA/preamble/feedback information may also be used.
Step 33: and triggering resource reselection when determining that resource collision occurs according to the resources occupied by the transmission content.
Optionally, the resource collision includes at least one of:
and the first associated resource indicated by the first SA successfully decoded in the first sub-window collides with the initial transmission resource or the retransmission resource selected by the first service transmission block.
Wherein the first associated resource comprises: at least one of occupied time-frequency resources of first data information, occupied time-frequency resources of SA associated with the first data information, occupied time-frequency resources of a lead code associated with the first data information, and occupied time-frequency resources of feedback information associated with the first data information; the first data information corresponds to the first SA.
Specifically, if the first associated resource indicated by the first SA that is successfully decoded in the first sub-window collides with the initial transmission resource or the retransmission resource selected by the first service transport block, resource reselection of the initial transmission resource or the retransmission resource of the first service transport block may be performed.
And the second associated resource reserved by the first SA next time collides with the initial transmission resource or the retransmission resource selected by the first service transmission block.
Wherein the second associated resource comprises: at least one of occupied time-frequency resources of first data information, occupied time-frequency resources of SA associated with the first data information, occupied time-frequency resources of a lead code associated with the first data information, and occupied time-frequency resources of feedback information associated with the first data information; the first data information corresponds to the first SA.
Specifically, if the second associated resource reserved by the first SA next time collides with the initial transmission resource or the retransmission resource selected by the first service transport block, the resource reselection of the initial transmission resource or the retransmission resource of the first service transport block may be performed.
And when the first service transmission block is a periodic service transmission block, the third associated resource reserved by the first SA for multiple times collides with the initial transmission resource or the retransmission resource reserved by the first service transmission block for multiple times.
The third associated resource comprises: at least one of occupied time-frequency resources of first data information, occupied time-frequency resources of SA associated with the first data information, occupied time-frequency resources of a lead code associated with the first data information, and occupied time-frequency resources of feedback information associated with the first data information; the first data information corresponds to the first SA.
Specifically, if the third associated resource reserved by the first SA for multiple times collides with the initial transmission resource or the retransmission resource reserved by the first service transport block for multiple times, the resource reselection of the initial transmission resource or the retransmission resource reserved by the first service transport block for multiple times may be performed when the first service transport block is a periodic service transport block.
Under the condition that the first service transmission block is an aperiodic service transmission block, the initial transmission resource or the retransmission resource of the first service transmission block is selected in the resource selection window, and the time-frequency resource of the next transmission does not need to be reserved, and the transmission content in the first sub-window is not considered, such as: the first SA, a third associated resource reserved for multiple times.
The following describes the above step 33 with reference to specific examples:
example one: and the first associated resource indicated by the first SA successfully decoded in the first sub-window collides with the initial transmission resource or the retransmission resource selected by the first service transmission block.
As shown in fig. 4, the retransmission resource selected by the first traffic transport block collides with the resource of the aperiodic second traffic transport block.
Specifically, if the occupied time-frequency resource of the first data information and the initial/retransmission resource selected by the first service transmission block are in resource collision, triggering resource reselection; wherein the first data information corresponds to the first SA;
if the occupied time-frequency resource of the SA associated with the first data information and the initial/retransmission resource selected by the first service transmission block are in resource collision, triggering resource reselection;
if the occupied time-frequency resource of the lead code associated with the first data information and the initial/retransmission resource selected by the first service transmission block are in resource collision, triggering resource reselection;
and if the occupied time-frequency resource of the feedback information related to the first data information and the initial/retransmission resource selected by the first service transmission block are in resource collision, triggering resource reselection.
In this embodiment, when a first associated resource (e.g., a resource occupied by first data information corresponding to a first SA, and/or a resource occupied by a preamble associated with the first data information, and/or a resource occupied by an SA associated with the first data information, and/or a resource occupied by feedback information associated with the first data information) indicated by a first SA successfully decoded in a first sub-window collides with an initial transmission resource or a retransmission resource selected by a first service transport block, resource reselection is triggered to avoid a decrease in system reliability and a low resource utilization rate due to resource collision.
Example two: and the second associated resource reserved by the first SA next time collides with the initial transmission resource or the retransmission resource selected by the first service transmission block.
As shown in fig. 4, the initial transmission resource selected by the first service transmission block collides with the resource reserved next time by the periodic third service transmission block.
Specifically, if the time-frequency resource of the first data information occupied by the next reservation and the initial/retransmission resource selected by the first service transmission block collide with each other, the resource reselection is triggered;
triggering resource reselection if the time-frequency resource of the SA associated with the first data information occupied by the reservation next time and the initial/retransmission resource selected by the first service transmission block are in resource collision; wherein the first data information corresponds to the first SA;
triggering resource reselection if the time-frequency resource of the lead code associated with the first data information occupied by the reservation next time and the initial/retransmission resource selected by the first service transmission block are in resource collision;
and if the time-frequency resource of the feedback information associated with the first data information occupied by the next reservation and the initial/retransmission resource selected by the first service transmission block are in resource collision, triggering resource reselection.
In this embodiment, when a second associated resource reserved next by the first SA successfully decoded in the first sub-window (for example, a resource reserved and occupied next by first data information corresponding to the first SA, and/or a resource reserved and occupied next by a preamble associated with the first data information, and/or a resource reserved and occupied next by an SA associated with the first data information, and/or a resource reserved and occupied next by feedback information associated with the first data information) collides with an initial transmission resource or a retransmission resource selected by the first service transport block, resource reselection is triggered to avoid reduction in system reliability and low resource utilization due to resource collision.
Example three: and when the first service transmission block is a periodic service transmission block, the third associated resource reserved by the first SA for multiple times collides with the initial transmission resource or the retransmission resource reserved by the first service transmission block for multiple times.
As shown in fig. 5, the initial transmission resource reserved by the first service transmission block for multiple times collides with the resource reserved by the third service transmission block for multiple times.
Specifically, if the time-frequency resource of the first data information occupied by the multiple reservations and the initial transmission resource or the retransmission resource reserved by the first service transmission block for multiple times collide with each other, the resource reselection is triggered; such as: consider the 10-star COUNTER (COUNTER) in R14; wherein the first data information corresponds to the first SA;
if the time-frequency resource of the SA associated with the first data information occupied by the multi-time reservation and the initial transmission resource or the retransmission resource reserved by the first service transmission block for multiple times collide with each other, triggering resource reselection;
if the time-frequency resource of the lead code associated with the first data information occupied by the multi-time reservation and the initial transmission resource or the retransmission resource reserved by the first service transmission block for multiple times collide with each other, triggering resource reselection;
and if the time-frequency resource of the feedback information associated with the first data information occupied by the multi-time reservation and the initial transmission resource or the retransmission resource reserved by the first service transmission block for multiple times collide with each other, triggering resource reselection.
In this embodiment, when a third associated resource (for example, a resource occupied by the first data information corresponding to the first SA in the multiple reservations and/or a resource occupied by the preamble code associated with the first data information in the multiple reservations and/or a resource occupied by the SA associated with the first data information in the multiple reservations collides with an initial transmission resource or a retransmission resource occupied by the first service transmission block in the multiple reservations, the resource reselection is triggered to avoid a decrease in system reliability and a low resource utilization rate due to the resource collision.
Example four: under the condition that the first service transmission block is an aperiodic service transmission block, the initial transmission resource or the retransmission resource of the first service transmission block is selected in the resource selection window, and the time-frequency resource of the next transmission does not need to be reserved, and the transmission content in the first sub-window is not considered, such as: the first SA, a third associated resource reserved for multiple times.
Further, after the step 31, the method may further include: and recording the RSSI of the sub-channel of the periodic service transmission block and the service period corresponding to the periodic service transmission block in the first sub-window.
The RSSI may include, among other things, a desired signal, interference, and noise.
In the scheme, a first sub-window is obtained in a resource selection window corresponding to a first service transmission block; receiving transmission content in the first sub-window; according to the resources occupied by the transmission content, when resource collision is determined, resource reselection is triggered so as to avoid reduction of system reliability caused by resource collision and low resource utilization rate; in addition, the scheme considers a HARQ feedback mechanism and a preamble access mechanism, and can support various types of service transmission modules, such as: the method can support the periodic service transmission blocks in the 5G NR V2X, which may include the predictable size of the service transmission block, the unpredictable size of the service transmission block of the non-periodic service transmission block, and the like, and can also support the unicast and multicast service transmission blocks in the 5G NR V2X. In addition, the RSSI of the sub-channel of the periodic service transmission block and the service period corresponding to the periodic service transmission block are recorded in the first sub-window, so that the system reliability and the frequency spectrum utilization rate are improved.
Second embodiment
As shown in fig. 6, a second embodiment of the present invention provides a method for triggering resource reselection, which specifically includes the following steps:
step 61: and obtaining a first sub-window in a resource selection window corresponding to the first service transmission block.
Step 62: and receiving transmission content in the first sub-window.
Optionally, the transmission content includes at least one of:
the first transmission content of the initial transmission or the retransmission of the second service transmission block which is not transmitted in the sensing window before the first service transmission block arrives;
and transmitting the first transmission content or the second transmission content of the retransmission of the third service transmission block in the first sub-window.
The second traffic transmission block may be a periodic traffic transmission block or an aperiodic traffic transmission block; the third traffic transmission block may be a periodic traffic transmission block or an aperiodic traffic transmission block.
The first transmission content includes: at least one of data information, SA, preamble, feedback information; the second transmission content includes: at least one of data information, SA, preamble, feedback information.
Specifically, the transmission content may be initial transmission data information of a second service transmission block that is not transmitted in a sensing window before the first service transmission block arrives, or retransmitted data information/SA/preamble/feedback information; the first transmission data information/SA/preamble code/feedback information of the periodic service transmission block in the first sub-window or the retransmission data information/SA/preamble code/feedback information can also be used; the first transmission data information/SA/preamble/feedback information of the aperiodic traffic transport block in the first sub-window, or the retransmission data information/SA/preamble/feedback information may also be used.
And step 63: determining that the resource of the transmission content is occupied if Reference Signal Receiving Power (RSRP) of the first data information exceeds a first threshold.
The first data information is data information corresponding to a first SA successfully decoded in the first sub-window.
The first SA may indicate time-frequency positions of the primary/retransmitted data information, periods of the service transport blocks, and the like. After the terminal successfully decodes the first SA, whether the first data information corresponding to the first SA is successfully decoded or not is determined, and the RSRP received by the first data information is calculated according to the demodulation reference signal.
If the RSRP of the first data information exceeds a first threshold (for example, RSRP receiving and transmitting thresholds), it is determined that the resource of the first data information is occupied, and it may be further determined that the time-frequency resource of the SA associated with the first data information, the time-frequency resource of the preamble associated with the first data information, and the time-frequency resource of the feedback information associated with the first data information are occupied, that is, the resource of the transmission content is occupied.
If the first SA indicates a reservation period, and if the resource of the first data information corresponding to the first SA is occupied, the resource of the first data information to be reserved next time is also occupied, so that it can be determined that the time-frequency resource of the SA associated with the first data information to be reserved next time, the time-frequency resource of the preamble associated with the first data information to be reserved next time, and the time-frequency resource of the feedback information associated with the first data information to be reserved next time are also occupied.
If the reservation period is indicated in the first SA, the resource of the first data information reserved for multiple times is also occupied under the condition that the resource of the first data information corresponding to the first SA is occupied, and thus the time-frequency resource of the SA associated with the first data information reserved for multiple times, the time-frequency resource of the preamble associated with the first data information reserved for multiple times, and the time-frequency resource of the feedback information associated with the first data information reserved for multiple times can be also occupied.
Step 64: and triggering resource reselection when determining that resource collision occurs according to the resources occupied by the transmission content.
Further, after the step 61, the method may further include: and recording the RSSI of the sub-channel of the periodic service transmission block and the service period corresponding to the periodic service transmission block in the first sub-window.
The RSSI may include, among other things, a desired signal, interference, and noise.
In the scheme, a first sub-window is obtained in a resource selection window corresponding to a first service transmission block; receiving transmission content in the first sub-window; according to the resources occupied by the transmission content, when resource collision is determined, resource reselection is triggered so as to avoid reduction of system reliability caused by resource collision and low resource utilization rate; in addition, the scheme considers a HARQ feedback mechanism and a preamble access mechanism, and can support various types of service transmission modules, such as: the method can support the periodic service transmission blocks in the 5G NR V2X, which may include the predictable size of the service transmission block, the unpredictable size of the service transmission block of the non-periodic service transmission block, and the like, and can also support the unicast and multicast service transmission blocks in the 5G NR V2X. In addition, the RSSI of the sub-channel of the periodic service transmission block and the service period corresponding to the periodic service transmission block are recorded in the first sub-window, so that the system reliability and the frequency spectrum utilization rate are improved.
Third embodiment
The first embodiment and the second embodiment are respectively described in terms of the method for triggering resource reselection of the present invention, and the following embodiment will further describe a corresponding terminal with reference to the accompanying drawings.
Specifically, as shown in fig. 7, a terminal 700 according to an embodiment of the present invention includes:
an obtaining module 710, configured to obtain a first sub-window in a resource selection window corresponding to a first service transport block;
a receiving module 720, configured to receive the transmission content in the first sub-window;
and a triggering module 730, configured to trigger resource reselection when determining that a resource collision occurs according to the resource occupied by the transmission content.
Optionally, the obtaining module 710 may include:
an obtaining unit, configured to obtain a first service transport block from a first service transport block according to an arrival time n of the first service transport block1First processing delay T of terminal1The last retransmission sending time n corresponding to the first service transmission block2And a second processing delay T of the terminal3And obtaining the first sub-window.
Optionally, the time domain range of the first sub-window is: [ n + T ]1，n2-T3]。
Optionally, T30, or T3＝T1。
Optionally, T3Configured or pre-configured by higher layers or determined by system predefined parameters.
Optionally, when the resource reselection is triggered, the last retransmission time corresponding to the first service transport block is the last retransmission time after the reselection.
Optionally, the transmission content includes at least one of:
the first transmission content of the initial transmission or the retransmission of the second service transmission block which is not transmitted in the sensing window before the first service transmission block arrives;
and transmitting the first transmission content or the second transmission content of the retransmission of the third service transmission block in the first sub-window.
Optionally, the second service transport block or the third service transport block is one of the following:
a periodic service transmission block;
and a non-periodic traffic transmission block.
Optionally, the first transmission content or the second transmission content includes at least one of:
data information;
control information SA;
a preamble;
and feeding back the information.
Optionally, the resource collision includes at least one of:
a first associated resource indicated by a first SA successfully decoded in the first sub-window collides with an initial transmission resource or a retransmission resource selected by the first service transmission block;
the second associated resource reserved by the first SA next time collides with the initial transmission resource or the retransmission resource selected by the first service transmission block;
and when the first service transmission block is a periodic service transmission block, the third associated resource reserved by the first SA for multiple times collides with the initial transmission resource or the retransmission resource reserved by the first service transmission block for multiple times.
Optionally, when the first service transport block is an aperiodic service transport block, the initial transmission resource or the retransmission resource of the first service transport block is selected in the resource selection window.
Optionally, the first associated resource or the second associated resource or the third associated resource includes at least one of:
occupied time-frequency resources of first data information, wherein the first data information corresponds to the first SA;
occupying time-frequency resources of the SA associated with the first data information;
time-frequency resources of a lead code associated with the first data information are occupied;
and occupying time-frequency resources of the feedback information associated with the first data information.
Optionally, the terminal 700 further includes:
a determining module, configured to determine that a resource of the transmission content is occupied if reference signal received power RSRP of the first data information exceeds a first threshold after the transmission content is received in the first sub-window.
Optionally, the terminal 700 further includes:
the recording module is used for recording the received energy strength indicator RSSI of the sub-channel of the periodic service transmission block and the service period corresponding to the periodic service transmission block in the first sub-window after the first sub-window is obtained.
The terminal embodiment of the invention is corresponding to the embodiment of the method, all implementation means in the method embodiment are applicable to the embodiment of the terminal, and the same technical effect can be achieved.
The terminal 700 in the embodiment of the present invention obtains the first sub-window through the resource selection window corresponding to the first service transmission block; receiving transmission content in the first sub-window; according to the resources occupied by the transmission content, when resource collision is determined, resource reselection is triggered so as to avoid reduction of system reliability caused by resource collision and low resource utilization rate; in addition, the scheme considers a HARQ feedback mechanism and a preamble access mechanism, and can support various types of service transmission modules, such as: the method can support the periodic service transmission blocks in the 5G NR V2X, which may include the predictable size of the service transmission block, the unpredictable size of the service transmission block of the non-periodic service transmission block, and the like, and can also support the unicast and multicast service transmission blocks in the 5G NR V2X. In addition, the RSSI of the sub-channel of the periodic service transmission block and the service period corresponding to the periodic service transmission block are recorded in the first sub-window, so that the system reliability and the frequency spectrum utilization rate are improved.
Fourth embodiment
In order to better achieve the above object, as shown in fig. 8, an embodiment of the present invention provides a terminal, including:
a processor 81; and a memory 83 connected to the processor 81 through a bus interface 82, wherein the memory 83 is used for storing programs and data used by the processor 81 in executing operations, and when the processor 41 calls and executes the programs and data stored in the memory 83, the following processes are performed.
Wherein the transceiver 84 is connected to the bus interface 82 for receiving and transmitting data under control of the processor 81, in particular when the processor executes the computer program it realizes the following steps:
obtaining a first sub-window in a resource selection window corresponding to a first service transmission block;
receiving transmission content in the first sub-window;
and triggering resource reselection when determining that resource collision occurs according to the resources occupied by the transmission content.
Optionally, the processor implements the following steps when executing the computer program:
according to the arrival time n of the first service transmission block1First processing delay T of terminal1The last retransmission sending time n corresponding to the first service transmission block2And a second processing delay T of the terminal3ObtainingThe first sub-window.
Optionally, the time domain range of the first sub-window is: [ n + T ]1，n2-T3]。
Optionally, T30, or T3＝T1。
Optionally, T3Configured or pre-configured by higher layers or determined by system predefined parameters.
Optionally, when the resource reselection is triggered, the last retransmission time corresponding to the first service transport block is the last retransmission time after the reselection.
Optionally, the transmission content includes at least one of:
the first transmission content of the initial transmission or the retransmission of the second service transmission block which is not transmitted in the sensing window before the first service transmission block arrives;
and transmitting the first transmission content or the second transmission content of the retransmission of the third service transmission block in the first sub-window.
Optionally, the second service transport block or the third service transport block is one of the following:
a periodic service transmission block;
and a non-periodic traffic transmission block.
Optionally, the first transmission content or the second transmission content includes at least one of:
data information;
control information SA;
a preamble;
and feeding back the information.
Optionally, the resource collision includes at least one of:
a first associated resource indicated by a first SA successfully decoded in the first sub-window collides with an initial transmission resource or a retransmission resource selected by the first service transmission block;
the second associated resource reserved by the first SA next time collides with the initial transmission resource or the retransmission resource selected by the first service transmission block;
and when the first service transmission block is a periodic service transmission block, the third associated resource reserved by the first SA for multiple times collides with the initial transmission resource or the retransmission resource reserved by the first service transmission block for multiple times.
Optionally, when the first service transport block is an aperiodic service transport block, the initial transmission resource or the retransmission resource of the first service transport block is selected in the resource selection window.
Optionally, the first associated resource or the second associated resource or the third associated resource includes at least one of:
occupied time-frequency resources of first data information, wherein the first data information corresponds to the first SA;
occupying time-frequency resources of the SA associated with the first data information;
time-frequency resources of a lead code associated with the first data information are occupied;
and occupying time-frequency resources of the feedback information associated with the first data information.
Optionally, the processor implements the following steps when executing the computer program:
and if the Reference Signal Received Power (RSRP) of the first data information exceeds a first threshold, determining that the resource of the transmission content is occupied.
Optionally, the processor implements the following steps when executing the computer program:
and recording the received energy intensity indicator RSSI of the sub-channel of the periodic service transmission block and the service period corresponding to the periodic service transmission block in the first sub-window.
The terminal in the embodiment of the invention obtains a first sub-window in a resource selection window corresponding to a first service transmission block; receiving transmission content in the first sub-window; according to the resources occupied by the transmission content, when resource collision is determined, resource reselection is triggered so as to avoid reduction of system reliability caused by resource collision and low resource utilization rate; in addition, the scheme considers a HARQ feedback mechanism and a preamble access mechanism, and can support various types of service transmission modules, such as: the method can support the periodic service transmission blocks in the 5GNR V2X, which may include the predictable size of the service transmission block and the unpredictable size of the service transmission block, the unpredictable size of the service transmission block of the aperiodic service transmission block, and the like, and can also support the unicast and multicast service transmission blocks in the 5G NR V2X. In addition, the RSSI of the sub-channel of the periodic service transmission block and the service period corresponding to the periodic service transmission block are recorded in the first sub-window, so that the system reliability and the frequency spectrum utilization rate are improved.
It should be noted that in fig. 8, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 81 and various circuits represented by memory 83 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 84 may be a plurality of elements including a transmitter and a transceiver providing a means for communicating with various other apparatus over a transmission medium. For different terminals, the user interface 85 may also be an interface capable of interfacing with a desired device, including but not limited to a keypad, display, speaker, microphone, joystick, etc. The processor 81 is responsible for managing the bus architecture and general processing, and the memory 83 may store data used by the processor 81 in performing operations.
Those skilled in the art will appreciate that all or part of the steps for implementing the above embodiments may be performed by hardware, or may be instructed to be performed by associated hardware by a computer program that includes instructions for performing some or all of the steps of the above methods; and the computer program may be stored in a readable storage medium, which may be any form of storage medium.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the above method for triggering resource reselection, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
Furthermore, it is to be noted that in the device and method of the invention, it is obvious that the individual components or steps can be decomposed and/or recombined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention. Also, the steps of performing the series of processes described above may naturally be performed chronologically in the order described, but need not necessarily be performed chronologically, and some steps may be performed in parallel or independently of each other. It will be understood by those skilled in the art that all or any of the steps or elements of the method and apparatus of the present invention may be implemented in any computing device (including processors, storage media, etc.) or network of computing devices, in hardware, firmware, software, or any combination thereof, which can be implemented by those skilled in the art using their basic programming skills after reading the description of the present invention.
Thus, the objects of the invention may also be achieved by running a program or a set of programs on any computing device. The computing device may be a general purpose device as is well known. The object of the invention is thus also achieved solely by providing a program product comprising program code for implementing the method or the apparatus. That is, such a program product also constitutes the present invention, and a storage medium storing such a program product also constitutes the present invention. It is to be understood that the storage medium may be any known storage medium or any storage medium developed in the future. It is further noted that in the apparatus and method of the present invention, it is apparent that each component or step can be decomposed and/or recombined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention. Also, the steps of executing the series of processes described above may naturally be executed chronologically in the order described, but need not necessarily be executed chronologically. Some steps may be performed in parallel or independently of each other.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (30)

1. A method for triggering resource reselection is applied to a terminal, and is characterized by comprising the following steps:
obtaining a first sub-window in a resource selection window corresponding to a first service transmission block;
receiving transmission content in the first sub-window;
and triggering resource reselection when determining that resource collision occurs according to the resources occupied by the transmission content.
2. The method of triggering resource reselection of claim 1, wherein said obtaining a first sub-window comprises:
according to the arrival time n of the first service transmission block1First processing delay T of terminal1The last retransmission sending time n corresponding to the first service transmission block2And a second processing delay T of the terminal3And obtaining the first sub-window.
3. The method for triggering resource reselection of claim 2, wherein the time domain range of the first sub-window is: [ n + T ]1，n2-T3]。
4. The method of triggering resource reselection of claim 2, wherein T is30, or T3＝T1。
5. The method of triggering resource reselection of claim 2, wherein T is3Configured or pre-configured by higher layersOr by system predefined parameters.
6. The method for triggering resource reselection according to any one of claims 2 to 5, wherein when resource reselection is triggered, a last retransmission time corresponding to the first service transport block is a reselected last retransmission time.
7. The method of triggering resource reselection of claim 1, wherein said transmission comprises at least one of:
the first transmission content of the initial transmission or the retransmission of the second service transmission block which is not transmitted in the sensing window before the first service transmission block arrives;
and transmitting the first transmission content or the second transmission content of the retransmission of the third service transmission block in the first sub-window.
8. The method of triggering resource reselection of claim 7, wherein the second traffic transmission block or the third traffic transmission block is one of:
a periodic service transmission block;
and a non-periodic traffic transmission block.
9. The method of triggering resource reselection of claim 7, wherein the first transmission or the second transmission comprises at least one of:
data information;
control information SA;
a preamble;
and feeding back the information.
10. The method of triggering resource reselection of claim 9, wherein the resource collision comprises at least one of:
a first associated resource indicated by a first SA successfully decoded in the first sub-window collides with an initial transmission resource or a retransmission resource selected by the first service transmission block;
the second associated resource reserved by the first SA next time collides with the initial transmission resource or the retransmission resource selected by the first service transmission block;
and when the first service transmission block is a periodic service transmission block, the third associated resource reserved by the first SA for multiple times collides with the initial transmission resource or the retransmission resource reserved by the first service transmission block for multiple times.
11. The method of claim 10, wherein when the first traffic transport block is an aperiodic traffic transport block, an initial transmission resource or a retransmission resource of the first traffic transport block is selected within the resource selection window.
12. The method of triggering resource reselection of claim 10, wherein the first associated resource or the second associated resource or the third associated resource comprises at least one of:
occupied time-frequency resources of first data information, wherein the first data information corresponds to the first SA;
occupying time-frequency resources of the SA associated with the first data information;
time-frequency resources of a lead code associated with the first data information are occupied;
and occupying time-frequency resources of the feedback information associated with the first data information.
13. The method of triggering resource reselection of claim 12, wherein after receiving the transmission within the first sub-window, further comprising:
and if the Reference Signal Received Power (RSRP) of the first data information exceeds a first threshold, determining that the resource of the transmission content is occupied.
14. The method for triggering resource reselection of claim 1, wherein after obtaining the first sub-window, the method further comprises:
and recording the received energy intensity indicator RSSI of the sub-channel of the periodic service transmission block and the service period corresponding to the periodic service transmission block in the first sub-window.
15. A terminal, comprising: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor when executing the computer program implements the steps of:
obtaining a first sub-window in a resource selection window corresponding to a first service transmission block;
receiving transmission content in the first sub-window;
and triggering resource reselection when determining that resource collision occurs according to the resources occupied by the transmission content.
16. The terminal of claim 15, wherein the processor, when executing the computer program, performs the steps of:
according to the arrival time n of the first service transmission block1First processing delay T of terminal1The last retransmission sending time n corresponding to the first service transmission block2And a second processing delay T of the terminal3And obtaining the first sub-window.
17. The terminal of claim 16, wherein the time domain range of the first sub-window is: [ n + T ]1，n2-T3]。
18. The terminal of claim 16, wherein T is30, or T3＝T1。
19. The terminal of claim 16, wherein T is3Configured or pre-configured by higher layers or determined by system predefined parameters.
20. The terminal according to any one of claims 16 to 19, wherein when resource reselection is triggered, a last retransmission time corresponding to the first service transport block is a last retransmission time after reselection.
21. The terminal of claim 15, wherein the transmission comprises at least one of:
the first transmission content of the initial transmission or the retransmission of the second service transmission block which is not transmitted in the sensing window before the first service transmission block arrives;
and transmitting the first transmission content or the second transmission content of the retransmission of the third service transmission block in the first sub-window.
22. The terminal of claim 21, wherein the second traffic transport block or the third traffic transport block is one of:
a periodic service transmission block;
and a non-periodic traffic transmission block.
23. The terminal of claim 21, wherein the first transmission or the second transmission comprises at least one of:
data information;
control information SA;
a preamble;
and feeding back the information.
24. The terminal of claim 23, wherein the resource collision comprises at least one of:
a first associated resource indicated by a first SA successfully decoded in the first sub-window collides with an initial transmission resource or a retransmission resource selected by the first service transmission block;
the second associated resource reserved by the first SA next time collides with the initial transmission resource or the retransmission resource selected by the first service transmission block;
and when the first service transmission block is a periodic service transmission block, the third associated resource reserved by the first SA for multiple times collides with the initial transmission resource or the retransmission resource reserved by the first service transmission block for multiple times.
25. The terminal of claim 24, wherein in a case that the first traffic transport block is an aperiodic traffic transport block, an initial transmission resource or a retransmission resource of the first traffic transport block is selected in the resource selection window.
26. The terminal of claim 25, wherein the first or second or third associated resources comprise at least one of:
occupied time-frequency resources of first data information, wherein the first data information corresponds to the first SA;
occupying time-frequency resources of the SA associated with the first data information;
time-frequency resources of a lead code associated with the first data information are occupied;
and occupying time-frequency resources of the feedback information associated with the first data information.
27. The terminal according to claim 26, wherein the processor, when executing the computer program, performs the steps of:
and if the Reference Signal Received Power (RSRP) of the first data information exceeds a first threshold, determining that the resource of the transmission content is occupied.
28. The terminal of claim 15, wherein the processor, when executing the computer program, performs the steps of:
and recording the received energy intensity indicator RSSI of the sub-channel of the periodic service transmission block and the service period corresponding to the periodic service transmission block in the first sub-window.
29. A terminal, comprising:
an obtaining module, configured to obtain a first sub-window in a resource selection window corresponding to a first service transport block;
a receiving module, configured to receive transmission content in the first sub-window;
and the triggering module is used for triggering resource reselection when determining that resource collision occurs according to the resources occupied by the transmission content.
30. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method of triggering a resource reselection of one of the claims 1 to 14.
CN201910253448.7A 2019-03-29 2019-03-29 Method and terminal for triggering resource reselection Active CN111757540B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910253448.7A CN111757540B (en) 2019-03-29 2019-03-29 Method and terminal for triggering resource reselection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910253448.7A CN111757540B (en) 2019-03-29 2019-03-29 Method and terminal for triggering resource reselection

Publications (2)

Publication Number Publication Date
CN111757540A true CN111757540A (en) 2020-10-09
CN111757540B CN111757540B (en) 2022-01-28

Family

ID=72672634

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910253448.7A Active CN111757540B (en) 2019-03-29 2019-03-29 Method and terminal for triggering resource reselection

Country Status (1)

Country Link
CN (1) CN111757540B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112272397A (en) * 2020-10-22 2021-01-26 大唐高鸿数据网络技术股份有限公司 Data transmission method, device and terminal
CN116368919A (en) * 2021-01-18 2023-06-30 Lg电子株式会社 Method and apparatus for improving resource allocation in NR V2X

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107659965A (en) * 2016-07-26 2018-02-02 北京三星通信技术研究有限公司 The method and apparatus of resource selection
CN107666681A (en) * 2016-07-29 2018-02-06 北京三星通信技术研究有限公司 Transmit the method and apparatus of data
CN108024292A (en) * 2016-11-04 2018-05-11 电信科学技术研究院 A kind of resource method for removing and device
CN108024318A (en) * 2016-10-31 2018-05-11 普天信息技术有限公司 A kind of part-time cognitive method and device suitable for V2P scenes PUE
US20180359787A1 (en) * 2015-11-17 2018-12-13 Lg Electronics Inc. Method by which terminal transmits v2x signal in wireless communication system, and terminal using method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180359787A1 (en) * 2015-11-17 2018-12-13 Lg Electronics Inc. Method by which terminal transmits v2x signal in wireless communication system, and terminal using method
CN107659965A (en) * 2016-07-26 2018-02-02 北京三星通信技术研究有限公司 The method and apparatus of resource selection
CN107666681A (en) * 2016-07-29 2018-02-06 北京三星通信技术研究有限公司 Transmit the method and apparatus of data
CN108024318A (en) * 2016-10-31 2018-05-11 普天信息技术有限公司 A kind of part-time cognitive method and device suitable for V2P scenes PUE
CN108024292A (en) * 2016-11-04 2018-05-11 电信科学技术研究院 A kind of resource method for removing and device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
HUAWEI: "Discussion on the P-UE resource selection，R1-1608649", 《3GPP TSG RAN WG1 MEETING #86BIS》 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112272397A (en) * 2020-10-22 2021-01-26 大唐高鸿数据网络技术股份有限公司 Data transmission method, device and terminal
CN116368919A (en) * 2021-01-18 2023-06-30 Lg电子株式会社 Method and apparatus for improving resource allocation in NR V2X

Also Published As

Publication number Publication date
CN111757540B (en) 2022-01-28

Similar Documents

Publication Publication Date Title
JP6518610B2 (en) Competition for wireless access using two types of channels
US8045574B2 (en) Contention protocols for wireless medium access in communication networks
JP2023547148A (en) Resource selection method, equipment and terminal equipment
CN110166182B (en) Method for managing contention window and sending equipment
CN111756487B (en) Resource reselection method, node equipment and resource reselection device
EP3500041B1 (en) Method for transmitting service data, access point and station
CN107535006A (en) A kind of channel access method and device
WO2014100932A1 (en) Resource competition method, and method and device for using resource competition
US20220394675A1 (en) Method and device for resource allocation
US7944882B2 (en) Channel access apparatus, systems, and methods
JP7230225B2 (en) Transmission resource detection method, transmission resource determination method, and communication equipment
JP2018530961A (en) Method and apparatus for transmitting physical downlink control channel
EP2749122B1 (en) Method and system for wireless communication baseband processing
US11357032B2 (en) Control information transmission method, transmit end, and receive end
CN110381601B (en) Communication method, communication device, computer readable medium and electronic equipment
CN107682930B (en) Resource selection method and device
CN111447682A (en) Service data transmission method, device and communication node
CN111757540B (en) Method and terminal for triggering resource reselection
CN111464953A (en) Resource and carrier reselection method and device
CN115243372A (en) Resource exclusion method, processing method, device, terminal equipment and storage medium
JP2023521647A (en) Sidelink resource reselection method and device
US11581998B2 (en) Configuration method and device for data transmission structure
EP4346303A1 (en) Resource reselection method and apparatus, device, and storage medium
CN113518323B (en) Resource selection method and terminal
WO2022027246A1 (en) Adaptive sensing based resource selection for d2d communication

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
TA01 Transfer of patent application right
TA01 Transfer of patent application right

Effective date of registration: 20211229

Address after: 400040 No. 35, Jinghe Road, Huxi street, high tech Zone, Shapingba District, Chongqing

Applicant after: Datang Gaohong Zhilian Technology (Chongqing) Co.,Ltd.

Address before: 100191 floor 1, building 3, area 3, 40 Xueyuan Road, Haidian District, Beijing

Applicant before: BEIJING GOHIGH DATA NETWORKS TECHNOLOGY Co.,Ltd.

GR01 Patent grant
GR01 Patent grant