CN111885620B - Channel part interception method and terminal equipment - Google Patents
Channel part interception method and terminal equipment Download PDFInfo
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- CN111885620B CN111885620B CN202010606296.7A CN202010606296A CN111885620B CN 111885620 B CN111885620 B CN 111885620B CN 202010606296 A CN202010606296 A CN 202010606296A CN 111885620 B CN111885620 B CN 111885620B
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- H—ELECTRICITY
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- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W72/50—Allocation or scheduling criteria for wireless resources
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Abstract
The invention discloses a channel part interception method and terminal equipment, which solve the problems of long time overhead, low resource utilization rate and poor flexibility of the conventional method and equipment. The method, comprising: acquiring first configuration information, and determining candidate resources in a candidate resource window to obtain corresponding interception resources; the candidate resource is the time unit position of the candidate resource selected by the user, and the interception resource is the time unit position of the interception resource corresponding to the candidate resource; the first configuration information contains one or more binding relations, and each binding relation is used for indicating the time position relation between the interception resource and the candidate resource. The terminal equipment using the method comprises the following steps: the configuration module is used for acquiring first configuration information; and the determining module is used for determining the candidate resources in the candidate resource window according to the first configuration information to obtain the corresponding interception resources. The invention improves the effectiveness of channel interception.
Description
Technical Field
The present invention relates to the field of mobile communications technologies, and in particular, to a channel portion interception method and a terminal device.
Background
In the terminal-to-terminal communication technology, a terminal can select transmission resources by a channel interception method, and a partial interception technology is introduced in the 4G LTE standard to reduce power overhead brought by terminal interception. The existing partial interception technology comprises two types: firstly, when data arrives, judging the subframe position of a candidate resource, then determining an interception subframe according to the binding relationship between the candidate subframe and the interception subframe, and selecting an available candidate resource according to an interception result, wherein the defect is that the configured interception subframe needs too long time overhead, so that a time window for meeting the delay requirement of a transmission packet does not exist; secondly, the terminal plans possible candidate subframes in advance, determines the listening subframes according to the binding relationship between the configured listening subframes and the candidate subframes, and initiates periodic partial listening, and the defects are resource waste and failure in flexibly changing the listening subframes to cause wrong judgment on available candidate resources.
Disclosure of Invention
The invention provides a channel part interception method and terminal equipment, which solve the problems of long time overhead, low resource utilization rate and poor flexibility of the conventional method and equipment.
In order to solve the above problems, the present invention is specifically realized as follows:
in a first aspect, the present invention provides a method for intercepting a channel part, including the following steps: acquiring first configuration information to obtain a binding relationship between a candidate resource and a monitored resource; the first configuration information comprises one or more binding relations and is used for indicating the time unit position relation between the interception resource and the candidate resource; the candidate resource is a resource for transmitting data, the interception resource is a resource for interception, and the purpose of interception is to confirm the use state of the candidate resource.
Further, the method further comprises: and acquiring second configuration information, and determining the time unit position of the self-selected interception resource from the interception resources, wherein the interception result on the self-selected interception resource is used for resource selection.
Further, if the first configuration information contains the binding relationship between the plurality of interception resources and the candidate resource time unit position, selecting one binding relationship meeting the transmission delay requirement; the requirement for meeting the time delay is at least one of the following: the number of the candidate resources in the candidate resource window and/or the candidate resource window in the time unit position of the candidate resource is not less than Y, and Y is the preset number of the candidate resources.
Preferably, if the binding relationship provided by the first configuration information is such that the time unit positions of all candidate resources are outside the candidate resource window, one or more subsets are selected from the binding relationship such that the time unit positions of the candidate resources indicated by the one or more subsets are within the candidate resource window.
Preferably, after triggering the resource selection, the interception is continued for a preset time length, and the available candidate resources are determined in the candidate resource window according to the interception result.
Preferably, if the reserved resource indicated by the SCI listened to by the listening resource conflicts with the candidate resource, listening is performed at the reserved resource position of the next period or periods indicated by the SCI.
Further, the method further comprises: and after the interception is started, switching the binding relationship according to the interception measurement result.
Preferably, the mode for determining the self-selected interception resource is at least one of the following: selecting the interception resource in [ n-T0, n-Tpro0], wherein n is the triggering time of resource selection, T0 is the length of an interception window, and Tpro0 is the processing delay; and selecting M interception resources before the resource selection triggering time, wherein M is the number of the interception resources and is an integer greater than or equal to 1.
Preferably, the method for switching the binding relationship according to the interception measurement result includes: and establishing a corresponding relation between the channel measurement result and the binding relation in advance, and converting the interception measurement result into the corresponding binding relation.
In a second aspect, the present invention further provides a channel partial sensing terminal device, where the method includes: the configuration module is used for acquiring first configuration information; and the determining module is used for determining the candidate resources in the candidate resource window according to the first configuration information to obtain the corresponding interception resources or determining the interception resources to obtain the corresponding candidate resources in the candidate resource window.
Further, the configuration module is further configured to obtain second configuration information; and further configured to determine a self-selected listening resource for resource selection according to the second configuration information.
Further, the determining module is further configured to listen in a reserved resource location of the next one or more periods indicated by the SCI when the reserved resource indicated by the SCI listened by the listening resource conflicts with the candidate resource.
Further, the determining module is further configured to switch the binding relationship according to the interception measurement result.
The beneficial effects of the invention include: the invention provides a channel partial interception method and terminal equipment, wherein the method supports a terminal to determine a required interception channel by combining configuration and actual requirements, and judges available candidate resources according to an interception result.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 (a) is an interception resource of an embodiment of a conventional channel partial interception method;
fig. 1 (b) is a first implementation of an embodiment of a conventional channel partial sensing method;
fig. 1 (c) is a second implementation of an embodiment of a conventional channel partial sensing method;
fig. 1 (d) shows a candidate resource misjudgment of an embodiment of a conventional channel partial sensing method;
FIG. 2 (a) is a diagram of candidate resource requirements for an embodiment of a channel segment sensing method;
fig. 2 (b) is a preset time length of an embodiment of a channel partial sensing method;
fig. 2 (c) is an interception reselection of an embodiment of a channel portion interception method;
fig. 3 (a) is a method flow of an embodiment of a channel portion sensing method including second configuration information;
fig. 3 (b) is a channel listening window of an embodiment of a channel partial listening method including second configuration information;
FIG. 4 (a) is a method flow of an embodiment of a channel partial sensing method involving binding handover;
fig. 4 (b) is a first binding relationship of an embodiment of a channel partial sensing method involving binding relationship switching;
fig. 4 (c) is a second binding relationship of an embodiment of a channel partial sensing method involving binding relationship switching;
fig. 4 (d) is a third binding relationship of an embodiment of a channel partial sensing method involving binding relationship switching;
fig. 5 is an embodiment of a channel segment sensing terminal device.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The innovation points of the invention are as follows: firstly, the interception resource and the candidate resource have various binding relations, and the terminal can self-adapt or select a binding relation meeting the transmission requirement according to the configuration, thereby effectively ensuring the data transmission delay of the terminal and improving the effectiveness of the interception channel; secondly, the invention provides a solution when the detected reserved resources indicated by the SCI conflict with the candidate resources, the channel reliability is higher, and the accuracy of the judgment of the available candidate resources is higher; thirdly, the invention can self-adaptively switch the binding relationship according to the measurement result, and has strong flexibility.
The technical solutions provided by the embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Example 1:
fig. 1 (a) shows an interception resource of an embodiment of a conventional channel partial interception method, fig. 1 (b) shows a first implementation of the embodiment of the conventional channel partial interception method, fig. 1 (c) shows a second implementation of the embodiment of the conventional channel partial interception method, and fig. 1 (d) shows a candidate resource misjudgment of the embodiment of the conventional channel partial interception method.
In fig. 1 (a), it is assumed that a candidate resource subframe position T _ y is provided, and a corresponding subframe position to be monitored is T _ y-k × Pstep, where Pstep is a system timeslot parameter and is a parameter related to system timeslot configuration, and values thereof are shown in the following table.
TABLE 1 System time Slot parameter Pstep values
| TDD uplink and downlink configuration | P step |
| TDD with UL/DL configuration 0 | 60 |
| TDD with UL/DL configuration 1 | 40 |
| TDD with UL/DL configuration 2 | 20 |
| TDD with UL/DL configuration 3 | 30 |
| TDD with UL/DL configuration 4 | 20 |
| TDD with UL/DL configuration 5 | 10 |
| TDD with UL/DL configuration 6 | 50 |
| Others | 100 |
k is a high layer configuration coefficient, and depending on high layer configuration information (gapc allocation sensing) acquired by the terminal, the terminal may transmit system information through the base station, or transmit RRC (radio resource control layer) reconfiguration message through the base station to acquire the high layer configuration information. The high-level configuration information is 10-bit information, if the k-th bit value is 1, the corresponding T _ y-k × Pstep subframe needs to be intercepted, namely the position of the intercepted resource subframe is T _ y-k × Pstep. When the terminal triggers resource selection at the resource selection triggering time n, the subframe position T _ y of the candidate resource is determined in the candidate resource window, then the candidate resource which conflicts with SCI indication in the candidate resource is removed according to the SCI information monitored on the subframe position T _ y-kxPstep of the monitored resource, and the final candidate resource set is determined.
According to the existing partial interception technology, the terminal can initiate two implementation schemes of partial interception according to the requirement of the terminal.
In a first implementation scheme, as shown in fig. 1 (b), when data arrives, the subframe position of a candidate resource is determined to be the subframe position of the candidate resource in fig. 1 (b), then the subframe position of a sensing resource is determined according to the binding relationship between the candidate resource and the subframe position of the sensing resource (binding relationship k = 1100000000), and an available candidate resource is selected according to the sensing result, which may cause that a candidate resource window [ n +/Δ T1, n +/Δ T2] that meets the delay requirement of a transmission packet does not exist due to too long time overhead required by the configured sensing resource, where n is the resource selection trigger time, and Δ T1 and Δ T2 are the first time and the second time, respectively.
In the second implementation scheme, as shown in fig. 1 (c), the terminal plans possible candidate resources in advance, determines the subframe position of the sensing resource according to the binding relationship between the configured sensing resource and the subframe position of the candidate resource, and initiates periodic partial sensing. When resource selection is triggered, selecting candidate resources in a candidate resource window [ n + delta T1, n + delta T2], then determining interception resources according to the binding relationship between the candidate resources and subframe positions of the interception resources, and selecting available candidate resources according to an interception result.
The implementation scheme has two problems, the first problem is that when the resource selection is triggered, available candidate resources are judged according to the binding relation between the candidate resources and the subframe positions of the interception resources and only according to the interception result of the bound interception resources. For example, if the candidate resource in the first candidate resource window in fig. 1 (c) is selected, the available candidate resource is determined according to the listening results of listening subframe set 1 and listening subframe set 2; and if the candidate resource in the second candidate resource window is selected, judging available candidate resources according to the monitoring results of the monitoring subframe set 3 and the monitoring subframe set 4. In practice, the sensing results of sensing the subframe sets 1 and 2 may also be used for candidate resource determination available in the second candidate resource window, which is not actually applied according to the existing partial subframe sensing method. The second problem is to configure a binding relationship between the candidate resources and the subframe positions of the monitoring resources, and the terminal does not flexibly change the subframe positions of the monitoring resources and makes an erroneous judgment on the available candidate resources.
For example, as shown in fig. 1 (d), the sensing resource subframe position T _ y-2 × Pstep indicated by the received SCI (side link control information) occupies T _ y and T _ y-Pstep in the candidate resource, and in fact, the 5G side link communication terminal may perform resource reselection, and the sensing occupied candidate resource may change and is not occupied. I.e., the subframe location T _ y-Pstep may not receive the SCI indication occupying subframe location T _ y. But limited by the configuration of the subframe position of the sensing resource, the terminal does not initiate SCI sensing at T _ y-Pstep and misjudges that T _ y is indicated to be occupied.
In addition, only one binding relationship between the sensing resource and the position of the candidate resource subframe is configured, which may cause the terminal to be unable to flexibly change the sensing subframe according to the sensed channel state, for example, assuming that the position of the candidate resource subframe is T _ y, and the position of the corresponding sensing resource subframe is T _ y-kxpstep, where the terminal may flexibly change the position of the candidate resource subframe T _ y, but a fixed binding relationship k may also cause the terminal to be unable to sense a part of subframes according to the requirement, which may affect the subsequent resource selection.
In fig. 1, the candidate subframe is a subframe position of the candidate resource, and the listening subframe set 1, the listening subframe set 2, the listening subframe set 3, and the listening subframe set 4 constitute the listening resource.
The embodiment 1 of the present invention introduces the existing channel partial interception method, and has the problems of no candidate resource subframe position due to the overlong time overhead required for intercepting the resource subframe position, channel resource waste, inflexible binding relationship fixation, and inaccurate interception.
Example 2:
fig. 2 (a) shows candidate resource requirements of an embodiment of a channel partial sensing method, fig. 2 (b) shows a preset time length of the embodiment of the channel partial sensing method, and fig. 2 (c) shows sensing reselection of the embodiment of the channel partial sensing method.
A method for channel partial sensing, comprising the steps of:
step 101, obtaining first configuration information, and firstly determining a candidate resource in a candidate resource window to obtain a corresponding interception resource, or firstly determining an interception resource to obtain a corresponding candidate resource in a candidate resource window.
In step 101, the first configuration information is obtained to obtain the binding relationship between the candidate resource and the listening resource.
In step 101, the first configuration information includes one or more binding relationships, each binding relationship indicating a relationship between a time unit location of a listening resource and a time unit location of a candidate resource. The candidate resource is a resource used for transmitting data, the interception resource is a resource which needs to be intercepted by the equipment, and the interception aims at confirming the use state of the candidate resource.
It should be noted that the time unit of the present invention may be a subframe, a slot, a symbol, or other time units.
In step 101, the first configuration information is obtained, an interception resource and a corresponding candidate resource are determined, the use state of the candidate resource is intercepted in the interception resource, and an available candidate resource is confirmed according to the interception result.
In step 101, the terminal listens to the usage status of the candidate resource according to the listening resource, determines an available candidate resource according to the listening result, and determines the candidate resource as an available candidate resource if the listening result indicates that the usage status of the candidate resource is idle.
In step 101, if the first configuration information includes binding relationships between multiple types of interception resources and candidate resource time unit positions, selecting one of the binding relationships that satisfies the transmission delay requirement; the requirement for meeting the time delay is as follows: the number of the candidate resources in the candidate resource window and/or the candidate resource window in the time unit position of the candidate resource is not less than Y, and Y is the preset number of the candidate resources.
That is, the terminal obtains the binding relationship between one or more interception resources and candidate resources according to the first configuration information, and adaptively or according to a preset configuration, selects a binding relationship between an interception resource and a candidate resource that meets the transmission requirement of the terminal to determine the interception resource if the terminal triggers the resource selection to adopt partial interception.
In step 101, specifically, it is assumed that the terminal triggers resource selection at a resource selection triggering time n, where the resource selection triggering time is an nth time unit, and the time unit here may be one subframe, one slot, one symbol, or another time unit.
According to the implementation situation, if the first snoopable time unit after the time instant n is Tm, that is, the time unit position Tm of the snoopable resource is the first snoopable time unit after n according to the implementation scheme of embodiment 1, it is assumed that the first configuration information provides the binding relationships between the multiple snoopable resources and the candidate resources, and the candidate resources are Tm + k _ Q × P respectively under different binding relationships corresponding to Tm, where k _ Q is an integer having a value greater than or equal to 1 corresponding to the qth binding relationship, Q =1,2, … …, Q, and the first configuration information includes the Q-th binding relationship in common from 1 to qth, and P is an integer greater than or equal to 1.
For example, the qth binding relationship is indicated as "1010100000", and the binding coefficient k _ q is the highest bit with a value of 1 in "1010100000", i.e., k _ q =5.
The terminal self-adapts or selects one of the binding relations meeting the requirements according to the configuration to determine the interception resource, and the requirements met by the terminal comprise one or more of the following requirements:
on demand, the terminal can select candidate resources in a candidate resource window [ n +. DELTA.T 1, n +. DELTA.T 2] satisfying the transmission delay requirement according to the binding relationship, that is, tm + k _ qxP is less than or equal to n +. DELTA.T 2.
And secondly, the time units occupied by the initial candidate resources in the [ n +. DELTA.T 1, n +. DELTA.T 2] time window by the terminal are not less than Y, namely the terminal can select the candidate resources on a time unit Ty (Y =1,2, … Y) in the time window [ n +. DELTA.T 1, n +. DELTA.T 2], and the Ty is less than or equal to n +. DELTA.T 2.
Note that Δ T1 and Δ T2 are the first and second times, respectively, and specific numerical values are not particularly limited, [ n + Δt1, n + Δt2] are candidate resource windows.
As shown in fig. 2 (a), the specific implementation manner of the terminal adaptively or according to configuration selection of one of the binding relationships meeting the requirements of the terminal to determine the listening resource may be: the first configuration information provides one or more interception resources and candidate resource binding relations, and the terminal selects one of the interception resources and the candidate resources adaptively or according to the configuration, so that the Tm + k _ qxP is within a time window [ n + Delta T1, n + Delta T2] which can meet the requirement of data transmission delay, namely Tm + k _ qxP is less than or equal to n + Delta T2.
The binding coefficient k _ q is an integer which is greater than or equal to 1 and is provided in the binding relation between the listening resource selected by the terminal and the candidate resource. And assuming that the time unit position of the candidate resource in [ n +. DELTA.T 1, n +. DELTA.T 2] of the terminal is Ty, and the time unit position corresponding to the monitored resource is Ty-km multiplied by P, wherein km is an integer less than or equal to k _ q and is related to the selected binding relationship. The selected binding relationship between the interception resource and the candidate resource may further require that more than or equal to Y candidate resources may be selected as candidate resources in a time window [ n +. DELTA.T 1, n +. DELTA.T 2], where Y is configured by a higher layer.
For example, suppose that the first configuration information provides 2 binding relationships between the listening resources and the candidate resources, which are "1010000000" and "1011100000", respectively, and the values of k _1 and k _2 are 3 and 5, only when k _1 is 3, the terminal can select the candidate resources within a time window [ n + Δt1, n + Δt2] satisfying the data transmission delay requirement, that is, tm +3 × P is less than or equal to n + Δt2, if the time unit position of the candidate resource is Ty, the time unit position of the corresponding listening resource is Ty-km × P, where km is 1 and 3 according to "1010000000".
In step 101, if the binding relationship provided by the first configuration information is such that the positions of all candidate resources are outside the candidate resource window, one or more subsets are selected from the binding relationship such that the resource positions of the candidate resources determined by the indicated binding coefficients thereof are within the candidate resource window.
Optionally, when the binding relationship between the sensing resource provided by the first configuration information and the candidate resource does not meet the transmission requirement of the terminal, for example, the binding relationship is "1010100000", and the value of k _1 is 5, tm +5 × P is not within the time window [ n + Δt1, n + Δt2] meeting the data transmission delay requirement, that is, tm +5 × P > n + Δt2, the corresponding terminal may determine the sensing resource according to a subset of the binding relationship between the sensing resource and the candidate resource in the first configuration information, for example, the previous 3-bit information "1010000000" of "1010100000" is used as the binding relationship between the sensing resource and the candidate resource, the value of k _2 is 3, the terminal may select the candidate resource within the time window [ n + Δt1, n + Δt2] meeting the data transmission delay requirement, and when the time unit position of the selected candidate resource is Ty, the time unit position of the sensing resource is Ty, the value of Ty-34km, the time unit position of the sensing resource is "34zxp 25", and the value of x T2 is obtained according to "xp 1 and xp 3".
In step 101, as shown in fig. 2 (b), the terminal portion listening method may further include that after the terminal triggers resource selection, the terminal performs continuous listening for the preset time length TF, and selects a candidate resource within a time window [ n +. DELTA.T 1, n +. DELTA.T 2] satisfying the delay requirement according to a listening result.
It should be noted that the preset time length TF is configured by a higher layer.
In step 101, if the reserved resource indicated by the SCI intercepted by the interception resource conflicts with the candidate resource, the interception is performed at the reserved resource location in the next one or more periods indicated by the SCI.
As shown in fig. 2 (c), when the terminal configures partial sensing, if the terminal starts partial sensing, if the reserved resource indicated by the SCI sensed by the sensing resource with time unit position Tn conflicts with the candidate resource with time unit position Ty, the terminal senses the reserved resource position indicated by the SCI for the next one or more periods.
For example, assuming that the terminal implementation side uses Ty as a time unit position of a candidate resource, uses a time unit Tn corresponding to Ty as a time unit position of a listening resource according to a binding relationship between the candidate resource and the listening resource, the terminal listens at Tn, receives SCI information for detecting the time unit Tn, and if a reserved resource Tn + a × Pn indicated by SCI conflicts with a terminal candidate resource (which may be Ty or a candidate resource at another time unit position), the terminal listens at a reserved resource position Tn + b × Pn of the next cycle or multiple cycles indicated by the SCI.
For another example, if the reserved resource Tn + a × Pn indicated by the received SCI conflicts with a terminal candidate resource (which may be Ty or other candidate resource) and the associated RSRP (reference signal received power) measurement is above a certain threshold, the terminal listens to the reserved resource location Tn + b × Pn for the next one or more cycles indicated by the SCI.
Wherein, a is a reselection binding coefficient and is an integer greater than or equal to 1, b is a reselection listening coefficient and is a subset in a set {1,2, …, a }, and Pn is a reserved resource period indicated in the SCI information received by the Tn time unit.
The channel partial interception method provided in embodiment 2 of the present invention provides multiple binding relationships between the intercepted resources and the candidate resources, and can effectively ensure the data transmission delay of the terminal and improve the effectiveness of the intercepted channel.
Example 3:
fig. 3 (a) is a method flow of an embodiment of a channel partial sensing method including second configuration information, and fig. 3 (b) is a channel sensing window of the embodiment of the channel partial sensing method including second configuration information, where the embodiment 3 of the present invention includes the second configuration information, which can implement further screening of sensing resources for resource selection, and a channel partial sensing method includes the following steps:
Step 201 is the same as step 101 and the discussion is not repeated here.
Step 202, obtaining second configuration information, and determining a time unit position of a self-selected interception resource from the interception resources, wherein an interception result on the self-selected interception resource is used for resource selection.
In step 202, the second configuration information includes information for determining the self-selected listening resource, the second configuration information is acquired, the time unit position of the self-selected listening resource is determined from the listening resource, and the use state of the candidate resource is determined according to the listening result of the self-selected listening resource: when the terminal monitors that the use state of the candidate resource is idle, the terminal determines the candidate resource as an available candidate resource.
In step 202, the self-selected listening resource is a listening resource for determining available candidate resources.
In step 202, when the terminal configures partial listening, if the terminal triggers resource selection, the listening resources for available candidate resource selection are determined according to the second configuration information.
Determining the self-selected interception resource by at least one of the following modes:
selecting the interception resource in [ n-T0, n-Tpro0], wherein n is the triggering time of resource selection, T0 is the length of an interception window, and Tpro0 is the processing delay;
and selecting M interception resources before the resource selection triggering time, wherein M is the number of the interception resources and is an integer greater than or equal to 1.
In the first mode, as shown in fig. 3 (b), assuming that the terminal triggers resource selection at a resource selection triggering time n, the terminal determines candidate resources (Y =1,2, …, Y) with Y time unit positions Ty in a time window [ n + Δt1, n + Δt2] satisfying the data transmission delay requirement of the terminal, where Y is an integer greater than or equal to 1.
The second configuration information is used to determine the listening resources selected by the available candidate resources, and may be a listening window length T0 or a listening resource number M.
Assuming that the terminal monitors the monitoring resource bound by the candidate resource with the time unit position of Ty when triggering resource selection, the terminal uses the monitoring resource in [ n-T0, n-Tpro0] as the self-selection monitoring resource for resource selection according to the second configuration information.
In the second mode, M resources sensed before the nth time unit are used as sensing resources for determining available resources in the candidate resources.
The channel partial interception method provided in embodiment 3 of the present invention further defines the time domain position of the intercepted resource used for resource selection, and improves the reliability of channel transmission.
Example 4:
fig. 4 (a) is a method flow of an embodiment of a channel partial sensing method involving binding relationship switching, fig. 4 (b) is a first binding relationship of an embodiment of a channel partial sensing method involving binding relationship switching, fig. 4 (c) is a second binding relationship of an embodiment of a channel partial sensing method involving binding relationship switching, and fig. 4 (d) is a third binding relationship of an embodiment of a channel partial sensing method involving binding relationship switching, in the 4 th embodiment of the present invention, the method involving binding relationship switching has an advantage of high flexibility, and a channel partial sensing method includes the following steps:
Step 301 synchronizes step 201, which is not discussed in detail.
And step 302, after the interception is started, switching the binding relationship according to the interception measurement result.
In step 302, the terminal obtains the binding relationship between one or more interception resources and the candidate resource according to the first configuration information, and when the terminal configures the beginning of partial interception, the terminal can adaptively select a binding relationship between an interception resource and a candidate resource according to the result of interception measurement to perform channel interception.
In step 302, the method for switching the binding relationship according to the listening measurement result may be designed as follows: and establishing a corresponding relation between the channel measurement result and the binding relation in advance, and converting the interception measurement result into the corresponding binding relation.
Specifically, it is assumed that the terminal obtains the first configuration information, which includes a binding relationship between one or more listening resources and the candidate resource, where the binding relationship indicates that a location of the resource to be listened can be determined according to a location of the candidate resource, and conversely, the location of the candidate resource can be determined according to the location of the listening resource.
For example, as shown in fig. 4 (b), suppose that 1 candidate resource Ty is configured in the terminal every 8P, where P is a time parameter, when the binding relationship is 0000000001, since the 10 th bit is 1, the indicated binding coefficient is 10, the time unit position of the candidate resource is Ty, and the time unit position of the corresponding listening resource is Ty-10P.
For another example, as shown in fig. 4 (c), when the binding relationship is 0000000101, the indicated binding coefficients are 10 and 8 because the 10 th bit and the 8 th bit are 1, the time unit position of the candidate resource is Ty, and the time unit position of the corresponding sensing resource is Ty-10P, ty-8P.
For another example, as shown in fig. 4 (d), when the binding relationship is 0000010101, since the 10 th bit, the 8 th bit, and the 6 th bit are 1, the indicated binding coefficients are 10, 8, and 6, the time unit position of the candidate resource is Ty, and the time unit position of the corresponding sensing resource is Ty-10P, ty-8P, ty-6P.
By analogy, when the binding relationship is 0001010101, the indicated binding coefficients are 10, 8, 6 and 4 because the 10 th bit, the 8 th bit, the 6 th bit and the 4 th bit are 1, the time unit position of the candidate resource is Ty, and the time unit position of the corresponding interception resource is Ty-10P, ty-8P, ty-6P, ty-4P; when the binding relationship is 0101010101, the indicated binding coefficients are 10, 8, 6, 4 and 2 because the 10 th bit, the 8 th bit, the 6 th bit, the 4 th bit and the 2 nd bit are 1, the time unit position of the candidate resource is Ty, and the time unit position of the corresponding interception resource is Ty-10P, ty-8P, ty-6P, ty-4P, ty-2P.
It should be noted that, the specific configuration indication manner of the binding relationship is not specifically limited in the present invention.
In step 302, when the terminal performs partial sensing (partial sensing), one of the binding relationships is selected or one of the binding relationships indicated by the base station is used for channel sensing. When the terminal is in the channel interception process, the terminal can be adaptively switched to the binding relationship between another interception resource and the candidate resource for interception according to the interception measurement result.
The interception measurement result may be CBR (channel busy rate) measurement of a channel, for example, a CBR measurement result range corresponds to a binding relationship between an interception resource and a candidate resource, and when a measured CBR corresponds to a certain CBR measurement result range, the corresponding binding relationship between the interception resource and the candidate resource is selected to perform channel interception.
The terminal in the application of the invention can obtain the first configuration information and the second configuration information, and the first configuration information and the second configuration information can be sent by network equipment or other terminal equipment or can be written into the equipment in advance based on a standard protocol.
The channel partial interception method provided by the embodiment of the invention can adaptively switch the binding relationship between the candidate resources and the intercepted resources according to the channel interception measurement result, and has stronger flexibility.
Example 5:
fig. 5 is an embodiment of a channel segment sensing terminal device, which uses the methods in embodiments 2 to 4, and specifically, a channel segment sensing terminal device, which includes: a configuration module 11 and a determination module 12.
The configuration module is used for acquiring first configuration information; the determining module is configured to obtain a binding relationship between a candidate resource and an interception resource according to the first configuration information, determine the candidate resource in a candidate resource window according to the first configuration information, and obtain a corresponding interception resource, or determine the interception resource according to the first configuration information, and obtain a corresponding candidate resource in the candidate resource window.
Further, the configuration module is further configured to obtain second configuration information; the determining module is further configured to determine a self-selected interception resource for resource selection according to the second configuration information.
Further, the determining module is further configured to listen in a reserved resource location of the next one or more periods indicated by the SCI when the reserved resource indicated by the SCI listened by the listening resource conflicts with the candidate resource.
Further, the determining module is further configured to switch the binding relationship according to the interception measurement result.
In embodiment 5 of the present invention, the methods used by the configuration module and the determination module have been specifically described in embodiments 2 to 4, and a description thereof is not repeated here.
The terminal equipment provided by the embodiment of the invention has the advantages of high reliability, strong flexibility and high channel transmission accuracy by using the method.
It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
The above description is only an example of the present invention and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (12)
1. A method for channel partial sensing, comprising the steps of:
acquiring first configuration information, firstly determining candidate resources in a candidate resource window to obtain corresponding interception resources, or firstly determining interception resources to obtain corresponding candidate resources in the candidate resource window;
the first configuration information comprises one or more binding relations and is used for indicating the time unit position relation between the interception resource and the candidate resource;
the candidate resource is a resource used for transmitting data, the interception resource is a resource used for interception, and the interception aims at confirming the use state of the candidate resource;
if the first configuration information contains the binding relationship between the plurality of interception resources and the candidate resource time unit position, selecting one binding relationship meeting the transmission delay requirement;
the requirement for meeting the transmission delay is as follows: the number of the candidate resources in the candidate resource window and/or the candidate resource window in the time unit position of the candidate resource is not less than Y, and Y is the preset number of the candidate resources.
2. The method of channel segment sensing according to claim 1, wherein the method further comprises:
and acquiring second configuration information, and determining the time unit position of the self-selected interception resource from the interception resources, wherein the interception result on the self-selected interception resource is used for resource selection.
3. The channel partial sensing method of claim 1, wherein if the first configuration information provides a binding relationship such that time unit locations of all candidate resources are outside the candidate resource window, then selecting one or more subsets from the binding relationship such that the time unit locations of the candidate resources indicated thereby are within the candidate resource window.
4. The method for channel segment sensing according to claim 1, wherein sensing continues for a preset length of time after triggering resource selection, and available candidate resources are determined within the candidate resource window according to sensing results.
5. The channel segment sensing method of claim 1, wherein if the reserved resources indicated by the SCI sensed at the sensing resources collide with the candidate resources, sensing is performed at a reserved resource location of a next one or more periods indicated by the SCI.
6. The method of channel segment sensing according to claim 1, wherein the method further comprises:
and after the interception is started, switching the binding relationship according to the interception measurement result.
7. The channel segment sensing method of claim 2, wherein the self-selected sensing resource is determined by at least one of:
in a first way, the listening resources in [ n-T0, n-Tpro0] are selected, wherein, n is the triggering time of resource selection, T0 is the length of a monitoring window, and Tpro0 is the processing time delay;
and selecting M interception resources before the resource selection triggering time, wherein M is the number of the interception resources and is an integer greater than or equal to 1.
8. The method for channel segment sensing according to claim 6, wherein the method for switching the binding relationship according to the sensing measurement result comprises:
and establishing a corresponding relation between the channel measurement result and the binding relation in advance, and converting the interception measurement result into the corresponding binding relation.
9. A channel segment sensing terminal using the method of any one of claims 1 to 8, comprising:
the configuration module is used for acquiring first configuration information;
and the determining module is used for determining the candidate resources in the candidate resource window according to the first configuration information to obtain the corresponding interception resources or determining the interception resources to obtain the corresponding candidate resources in the candidate resource window.
10. The channel segment listening terminal device of claim 9,
the configuration module is further used for acquiring second configuration information;
the determining module is further configured to determine a self-selected interception resource for resource selection according to the second configuration information.
11. The channel segment listening terminal device of claim 9,
the determining module is further configured to listen in a reserved resource location of the next one or more periods indicated by the SCI when the reserved resource indicated by the SCI listened by the listening resource conflicts with the candidate resource.
12. The channel segment listening terminal device of claim 9,
the determining module is further configured to switch the binding relationship according to the interception measurement result.
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| WO2022205387A1 (en) * | 2021-04-01 | 2022-10-06 | 富士通株式会社 | Sidelink resource reselection method and apparatus |
| AU2021439069A1 (en) * | 2021-04-02 | 2023-08-31 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Partial sensing-based resource selection method and apparatus, device, and storage medium |
| CN115175316A (en) * | 2021-04-07 | 2022-10-11 | 维沃移动通信有限公司 | Method, device, terminal and storage medium for selecting side link resources |
| CN116982375A (en) * | 2021-05-08 | 2023-10-31 | Oppo广东移动通信有限公司 | Resource determination method, device and storage medium |
| CN115604791A (en) * | 2021-06-28 | 2023-01-13 | 华为技术有限公司（Cn） | Communication method and device |
| WO2023279343A1 (en) * | 2021-07-08 | 2023-01-12 | Oppo广东移动通信有限公司 | Resource determination method, apparatus and device, and medium, chip, product and program |
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