CN116456498A - Resource selection method and device - Google Patents

Resource selection method and device Download PDF

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Publication number
CN116456498A
CN116456498A CN202210159063.6A CN202210159063A CN116456498A CN 116456498 A CN116456498 A CN 116456498A CN 202210159063 A CN202210159063 A CN 202210159063A CN 116456498 A CN116456498 A CN 116456498A
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Prior art keywords
resource
terminal
pscch
power
resources
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Chinese (zh)
Inventor
吴越
李雪茹
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to PCT/CN2022/139693 priority Critical patent/WO2023130939A1/en
Publication of CN116456498A publication Critical patent/CN116456498A/en
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Abstract

The application provides a resource selection method and a resource selection device, which relate to the field of communication and can enable interference on a resource for data transmission determined by a terminal to be smaller or not to exist, so that transmission reliability is improved. The method comprises the following steps: the first terminal determines a set of candidate resources that does not include the first resource. Wherein the interference power on a second resource associated with the first resource is greater than or equal to the first threshold. The periodic continuation resource of the second resource is overlapped with the resource set corresponding to the first resource, and the periodic continuation resource of the second resource is determined according to the second resource and the first period of the second terminal. The time domain position of the second resource overlaps with the time domain position of the third resource, and the frequency domain position does not overlap. The interference power on the second resource is determined according to the power of the signal carried by the third resource leaked on the second resource; the third resource is a resource in the sensing window, and the signal carried by the third resource is a PSCCH and/or a PSSCH of the second terminal.

Description

Resource selection method and device
The present application claims priority from the national intellectual property agency, application number 202210001047.4, chinese patent application entitled "a method for selecting a Sidelink resource and electronic device", filed on day 01 and 04 of 2022, the entire contents of which are incorporated herein by reference.
Technical Field
The present disclosure relates to the field of communications, and in particular, to a method and an apparatus for selecting resources.
Background
In the third generation partnership project (3rd generation partnership project,3GPP) side uplink (SL) version (Release, rel) 16, two resource allocation modes (modes) are defined: mode1 and Mode2.
Under Mode1, the access network device (e.g., a base station) allocates SL resources to the terminal for SL transmission.
Under Mode2, the SL resources for data transmission are selected by the transmitting terminal by channel awareness and selection (sensing and selection) itself. Specifically, the transmitting terminal acquires the position of the reserved resource of the other terminal by listening to the side uplink control information (sidelink control information, SCI) transmitted by the other terminal in the sensing window, so as to determine the available resource in the selection window.
In general, the available resources determined by the transmitting terminal in the selection window do not overlap with the resources reserved by other terminals. However, the transmission of other terminals on the reserved resources may generate power leakage on the available resources determined by the transmitting terminal, so as to interfere with the data transmission of the transmitting terminal, and reduce the reliability of the data transmission.
Disclosure of Invention
The application provides a resource selection method and a resource selection device, which can enable the interference on the resources for data transmission determined by a terminal to be smaller or no interference exists, so that the transmission reliability is improved.
In a first aspect, a resource selection method is provided, where the method may be performed by a first terminal, or may be performed by a component of the first terminal, for example, a processor, a chip, or a system-on-chip of the first terminal, or may be implemented by a logic module or software that can implement all or part of the functions of the first terminal. The method comprises the following steps: a set of candidate resources is determined, the set of candidate resources not including the first resource. Wherein the interference power on a second resource associated with the first resource is greater than or equal to the first threshold. The periodic continuation resource of the second resource is overlapped with the resource set corresponding to the first resource, and the periodic continuation resource of the second resource is determined according to the second resource and the first period of the second terminal. The time domain position of the second resource overlaps with the time domain position of the third resource, and the frequency domain position of the second resource does not overlap with the frequency domain position of the third resource. The interference power on the second resource is determined based on the power on the second resource of the signal carried by the third resource. The third resource is a resource in the sensing window, and the signal carried by the third resource is a PSCCH of the second terminal and/or a PSCCH scheduled by the PSCCH.
Based on this scheme, when determining the resources for data transmission, the terminal determines the periodically-extended resources of the second resource according to the second resource and the first period of the second terminal, and the time domain position of the second resource overlaps with the time domain position of the third resource, so that the periodically-extended resources of the second terminal (i.e., the periodically-extended resources of the third resource determined according to the third resource and the first period of the second terminal) overlap with the time domain position of the periodically-extended resources of the second resource. Thus, on the periodically-extended resources of the second resource, there is interference caused by the PSCCH and/or PSSCH transmitted by the second terminal on the periodically-extended resources of the third resource. At this time, if the periodically extended resource of the second resource overlaps with the first resource or the periodically extended resource of the first resource, then there is interference on the first resource. In the scene, the candidate resources determined by the first terminal do not comprise the first resources, so that the first terminal can be prevented from transmitting by using the first resources with poor quality or periodically prolonged resources of the first resources, and the reliability of data transmission is improved.
In a second aspect, a resource selection method is provided, where the method may be performed by the first terminal, or may be performed by a component of the first terminal, for example, a processor, a chip, or a system-on-chip of the first terminal, or may be implemented by a logic module or software that can implement all or part of the functions of the first terminal. The method comprises the following steps: a set of candidate resources is determined, the set of candidate resources including a first resource. And deleting the first resource from the candidate resource set when the target condition is met. The target conditions include: the interference power on the second resource is greater than or equal to the first threshold. The periodic continuation resource of the second resource is overlapped with the resource set corresponding to the first resource, and the periodic continuation resource of the second resource is determined according to the second resource and the first period of the second terminal. The time domain position of the second resource overlaps with the time domain position of the third resource, and the frequency domain position of the second resource does not overlap with the frequency domain position of the third resource. The interference power on the second resource is determined based on the power on the second resource of the signal carried by the third resource. The third resource is a resource in the sensing window, and the signal carried by the third resource is a PSCCH of the second terminal and/or a PSCCH scheduled by the PSCCH. The technical effects of the second aspect may refer to the technical effects of the first aspect, and are not described herein.
With reference to the first aspect or the second aspect, in one possible design, the set of resources corresponding to the first resource includes the first resource and/or a periodically extended resource of the first resource, where the periodically extended resource of the first resource is determined according to the first resource and the second period of the first terminal.
With reference to the first aspect or the second aspect, in one possible design, the interference power on the second resource is determined according to the power on the second resource of the signal leakage carried by the third resource, including: the interference power on the second resource is determined based on the power of the signal carried by the third resource leaked on the second resource, and the signal received power of the PSCCH and/or PSCCH scheduled PSCCH of the third terminal carried on the second resource.
Based on the possible design, since the PSCCH of the third terminal and/or the signal received power of the PSCCH scheduled by the PSCCH carried on the second resource is co-channel interference caused by the third terminal to the first terminal, the interference power on the second resource may include non-co-channel interference of the second terminal and co-channel interference of the first terminal. That is, the present application determines interference on the second resource from both non-co-channel interference and co-channel, thereby improving the accuracy of resource selection.
With reference to the first aspect or the second aspect, in one possible design, the periodically-extended resource of the second resource is determined according to the second resource and the first period of the second terminal, including: the periodically-extending resource of the second resource is determined according to the second resource, the first period of the second terminal, and the third period of the third terminal, where the second resource is used to carry the PSCCH of the third terminal and/or the pscsch scheduled by the PSCCH.
With reference to the first aspect or the second aspect, in one possible design, the power of the signal leaked on the second resource by the third resource is a signal receiving power on a first channel state information interference measurement CSI-IM resource, where the first CSI-IM resource is located on the second resource.
Based on the possible design, the terminal can obtain more accurate interference power values through measuring the signal receiving power on the CSI-IM resources, and avoid the resources with better quality from being excluded from the candidate resource sets.
With reference to the first aspect or the second aspect, in one possible design, the method further includes: first configuration information is received from a third terminal, the first configuration information being used to configure a first CSI-IM resource on a second resource. Or receiving second configuration information from the network device, wherein the second configuration information is used for configuring periodic CSI-IM resources, the period of the periodic CSI-IM resources is N time slots, the periodic CSI-IM resources comprise first CSI-IM resources, and N is a positive integer.
With reference to the first aspect or the second aspect, in one possible design, the CSI-IM resources are located on symbols other than guard symbols, and the CSI-IM resources are not used for PSSCH and PSCCH transmissions.
Based on the possible design, the CSI-IM resources are not used for PSSCH and PSCCH transmission, so that the power measured on the CSI-IM resources is the interference power, and the accuracy of interference power measurement is improved.
With reference to the first aspect or the second aspect, in one possible design, the power of the signal leakage carried by the third resource on the second resource is determined according to the signal reception power on the third resource and the in-band radiation template, where the signal reception power on the third resource is determined by the signal reception power of the PSCCH of the second terminal and/or the signal reception power of the PSCCH scheduled by the PSCCH.
Based on the possible design, the interference power on the second resource can be estimated according to the signal receiving power on the third resource and the in-band radiation template, so that the complexity of acquiring the interference power on the second resource can be reduced.
With reference to the first aspect or the second aspect, in one possible design, the signal received power on the third resource is a signal received power of a PSCCH of the second terminal; or, the signal receiving power on the third resource is the signal receiving power of the PSSCH scheduled by the PSCCH; or the signal receiving power on the third resource is the maximum value of the signal receiving power of the PSCCH of the second terminal and the signal receiving power of the PSSCH scheduled by the PSCCH; or the signal receiving power on the third resource is the minimum value of the signal receiving power of the PSCCH of the second terminal and the signal receiving power of the PSSCH scheduled by the PSCCH; alternatively, the signal received power on the third resource is an average of the signal received power of the PSCCH of the second terminal and the signal received power of the PSCCH scheduled PSCCH.
With reference to the first aspect or the second aspect, in one possible design, the method further includes: and receiving indication information from the fourth terminal, wherein the indication information is used for indicating the interference power on the second resource.
Based on the possible design, the fourth terminal may assist the first terminal in determining the interference power on the second resource, so that implementation complexity and energy consumption of the first terminal may be reduced.
With reference to the first aspect or the second aspect, in one possible design, the second terminal and the first terminal share the same side uplink resource pool, and/or a distance between the second terminal and the first terminal is less than or equal to a second threshold.
With reference to the first aspect or the second aspect, in one possible design, the first period of the second terminal is a period in which the second terminal reserves resources.
With reference to the first aspect or the second aspect, in one possible design, the second period of the first terminal is a period in which the first terminal reserves resources. The second period of the first terminal may be high-level parameter configuration.
With reference to the first aspect or the second aspect, in one possible design, the third period of the third terminal is a period in which the third terminal reserves resources.
In a third aspect, a resource selection method is provided, where the method may be performed by the fourth terminal, or may be performed by a component of the fourth terminal, for example, a processor, a chip, or a system-on-chip of the fourth terminal, or may be implemented by a logic module or software that can implement all or part of the functions of the first terminal. The method comprises the following steps: and determining the interference power on the second resource, and sending indication information to the first terminal, wherein the indication information is used for indicating the interference power on the second resource. Wherein the time domain position of the second resource overlaps with the time domain position of the third resource, and the frequency domain position of the second resource does not overlap with the frequency domain position of the third resource; the third resource is a resource in the sensing window; the interference power on the second resource is determined based on the power on the second resource that is leaked by a signal carried by a third resource, which is a physical side uplink control channel PSCCH and/or a physical side uplink shared channel PSCCH scheduled by a PSCCH of the second terminal.
Based on the scheme, the fourth terminal can determine the interference power on the second resource and indicate the interference power on the second resource to the first terminal, so that the first terminal can select the resource according to the interference power on the second resource, and the first terminal is prevented from transmitting by using the resource with poor quality, thereby improving the reliability of data transmission.
In one possible design, the interference power on the second resource is determined based on the power on the second resource of the signal leakage carried by the third resource, including: the interference power on the second resource is determined based on the power of the signal carried by the third resource leaked on the second resource, and the signal received power of the PSCCH and/or PSCCH scheduled PSCCH of the third terminal carried on the second resource.
In one possible design, the power of the signal carried by the third resource on the second resource is the signal received power on the first channel state information interference measurement CSI-IM resource, where the first CSI-IM resource is located on the second resource.
In one possible design, the method further comprises: first configuration information is received from a third terminal, the first configuration information being used to configure a first CSI-IM resource on a second resource. Or receiving second configuration information from the network device, wherein the second configuration information is used for configuring periodic CSI-IM resources, the period of the periodic CSI-IM resources is N time slots, the periodic CSI-IM resources comprise first CSI-IM resources, and N is a positive integer.
In one possible design, the CSI-IM resources may be located on symbols other than guard symbols, and the CSI-IM resources may not be used for PSSCH and PSCCH transmissions.
In one possible design, the power of the signal leakage carried by the third resource on the second resource is determined according to the signal reception power on the third resource and the in-band radiation template, and the signal reception power on the third resource is determined by the signal reception power of the PSCCH of the second terminal and/or the signal reception power of the PSCCH scheduled by the PSCCH.
In one possible design, the signal received power on the third resource is the signal received power of the PSCCH of the second terminal; or, the signal receiving power on the third resource is the signal receiving power of the PSSCH scheduled by the PSCCH; or the signal receiving power on the third resource is the maximum value of the signal receiving power of the PSCCH of the second terminal and the signal receiving power of the PSSCH scheduled by the PSCCH; or the signal receiving power on the third resource is the minimum value of the signal receiving power of the PSCCH of the second terminal and the signal receiving power of the PSSCH scheduled by the PSCCH; alternatively, the signal received power on the third resource is an average of the signal received power of the PSCCH of the second terminal and the signal received power of the PSCCH scheduled PSCCH.
In a fourth aspect, a resource allocation method is provided, where the method may be performed by a network device, or may be performed by a component of the network device, for example, a processor, a chip, or a system-on-chip of the network device, or may be implemented by a logic module or software that is capable of implementing all or part of the functions of the network device. The method comprises the following steps: generating second configuration information and sending the second configuration information to the first terminal or the fourth terminal. The second configuration information is used for configuring periodic CSI-IM resources, the period of the periodic CSI-IM resources is N time slots, and N is a positive integer.
In one possible design, the CSI-IM resources are located on non-guard symbols and are not used for PSSCH and PSCCH transmissions.
In a fifth aspect, a resource selection method is provided, where the method may be performed by the first terminal, or may be performed by a component of the first terminal, for example, a processor, a chip, or a system-on-chip of the first terminal, or may be implemented by a logic module or software that can implement all or part of the functions of the first terminal. The method comprises the following steps: a candidate set of resources is determined, the candidate set of resources not including the fourth resource. Wherein the signal received power on a fifth resource associated with the fourth resource is greater than or equal to the third threshold. The fifth resource is a resource in the sensing window, and the physical side uplink control channel PSCCH and/or a physical side uplink shared channel PSCCH scheduled by the PSCCH of the second terminal are carried on the fifth resource. The periodically extended resource of the fifth resource overlaps with the time domain position of the resource set corresponding to the fourth resource. The periodically-extended resource of the fifth resource is determined according to the fifth resource and the first period of the second terminal. The interval between the frequency domain location of the fifth resource and the frequency domain location of the fourth resource is less than a fourth threshold.
Based on the scheme, when the terminal determines the candidate resource set, if the received power on the fifth resource in the sensing window is larger, and the periodic continuation resource of the fifth resource overlaps with the time domain position of the resource set corresponding to the fourth resource, the candidate resource set does not include the fourth resource with smaller frequency domain interval with the fifth resource, so that the terminal finally determines that the interference on the resource for data transmission is smaller or no interference exists, and the reliability of the data transmission is improved.
In a sixth aspect, a communications apparatus is provided for implementing various methods. The communication device may be the first terminal of the first aspect or the second aspect or the fifth aspect, or a device comprising the first terminal, or a device comprised in the first terminal, such as a chip; alternatively, the communication apparatus may be the network device in the fourth aspect, or an apparatus contained in the network device, such as a chip; alternatively, the communication device may be the fourth terminal in the third aspect, or a device including the fourth terminal, or a device included in the fourth terminal, such as a chip. The communication device comprises a module, a unit or means (means) for implementing the method, and the module, the unit or the means can be implemented by hardware, software or implemented by hardware for executing corresponding software. The hardware or software includes one or more modules or units corresponding to the functions.
In some possible designs, the communication device may include a processing module. The processing module may be configured to implement the processing functions of any of the aspects described above and any possible implementation thereof. Further, the communication device may further include a transceiver module. The transceiver module, which may also be referred to as a transceiver unit, is configured to implement the transmitting and/or receiving functions of any of the above aspects and any possible implementation thereof. The transceiver module may be formed by a transceiver circuit, transceiver or communication interface.
In some possible designs, the transceiver module includes a transmitting module and/or a receiving module for implementing the transmitting or receiving function in any of the above aspects and any possible implementation thereof, respectively.
In a seventh aspect, there is provided a communication apparatus comprising: a processor and a memory; the memory is for storing computer instructions which, when executed by the processor, cause the communications device to perform the method of any of the aspects. The communication device may be the first terminal of the first aspect or the second aspect or the fifth aspect, or a device comprising the first terminal, or a device comprised in the first terminal, such as a chip; alternatively, the communication apparatus may be the network device in the fourth aspect, or an apparatus contained in the network device, such as a chip; alternatively, the communication device may be the fourth terminal in the third aspect, or a device including the fourth terminal, or a device included in the fourth terminal, such as a chip.
An eighth aspect provides a communication apparatus, comprising: a processor and a communication interface; the communication interface is used for communicating with a module outside the communication device; the processor is configured to execute a computer program or instructions to cause the communication device to perform the method of any of the aspects. The communication device may be the first terminal of the first aspect or the second aspect or the fifth aspect, or a device comprising the first terminal, or a device comprised in the first terminal, such as a chip; alternatively, the communication apparatus may be the network device in the fourth aspect, or an apparatus contained in the network device, such as a chip; alternatively, the communication device may be the fourth terminal in the third aspect, or a device including the fourth terminal, or a device included in the fourth terminal, such as a chip.
In a ninth aspect, there is provided a communication apparatus comprising: at least one processor; the processor is configured to execute a computer program or instructions stored in the memory to cause the communication device to perform the method of any of the aspects. The memory may be coupled to the processor or may be separate from the processor. The communication device may be the first terminal of the first aspect or the second aspect or the fifth aspect, or a device comprising the first terminal, or a device comprised in the first terminal, such as a chip; alternatively, the communication apparatus may be the network device in the fourth aspect, or an apparatus contained in the network device, such as a chip; alternatively, the communication device may be the fourth terminal in the third aspect, or a device including the fourth terminal, or a device included in the fourth terminal, such as a chip.
In a tenth aspect, there is provided a computer readable storage medium having stored therein a computer program or instructions which, when run on a communication device, enable the communication device to perform the method of any of the aspects.
In an eleventh aspect, there is provided a computer program product comprising instructions which, when run on a communications apparatus, cause the communications apparatus to perform the method of any of the aspects.
In a twelfth aspect, there is provided a communications device (e.g. which may be a chip or a system of chips) comprising a processor for carrying out the functions referred to in any of the aspects.
In some possible designs, the communication device includes a memory for holding necessary program instructions and data.
In some possible designs, the device may be a system-on-chip, may be formed from a chip, or may include a chip and other discrete devices.
It is to be understood that when the communication apparatus provided in any one of the sixth to twelfth aspects is a chip, the transmitting action/function may be understood as outputting information, and the receiving action/function may be understood as inputting information.
The technical effects of any one of the designs in the sixth aspect to the tenth aspect may be referred to as the technical effects of the different designs in the first aspect to the fifth aspect, and will not be described herein.
In a thirteenth aspect, there is provided a communication system including the first terminal of the above aspect.
Drawings
Fig. 1 is a schematic diagram of symbols occupied by a PSCCH and a PSSCH in a slot provided in the present application;
fig. 2 is a schematic diagram of one resource reservation and selection provided in the present application;
fig. 3 is a schematic diagram of adjacent channel interference provided in the present application;
fig. 4 is a schematic structural diagram of a communication system provided in the present application;
fig. 5 is a schematic structural diagram of a communication device provided in the present application;
FIG. 6 is a schematic flow chart of a resource selection method provided in the present application;
FIG. 7 is a schematic diagram of a resource distribution provided in the present application;
FIG. 8 is a schematic diagram of another resource distribution provided herein;
fig. 9 is a schematic diagram of distribution of CSI-IM resources provided in the present application;
FIG. 10 is a flow chart of another resource selection method provided in the present application;
FIG. 11 is a flow chart of another resource selection method provided in the present application;
Fig. 12 is a schematic structural diagram of a first terminal provided in the present application;
fig. 13 is a schematic structural diagram of a fourth terminal provided in the present application;
fig. 14 is a schematic structural diagram of another communication device provided in the present application.
Detailed Description
In the description of the present application, unless otherwise indicated, "/" means that the associated object is an "or" relationship, e.g., a/B may represent a or B; the term "and/or" in this application is merely an association relation describing an association object, and means that three kinds of relations may exist, for example, a and/or B may mean: there are three cases, a alone, a and B together, and B alone, wherein a, B may be singular or plural.
In the description of the present application, unless otherwise indicated, "a plurality" means two or more than two. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b, or c may represent: a, b, c, a and b, a and c, b and c, a and b and c, wherein a, b and c can be single or multiple.
In addition, in order to clearly describe the technical solutions of the embodiments of the present application, in the embodiments of the present application, the words "first", "second", and the like are used to distinguish the same item or similar items having substantially the same function and effect. It will be appreciated by those of skill in the art that the words "first," "second," and the like do not limit the amount and order of execution, and that the words "first," "second," and the like do not necessarily differ.
In the embodiments of the present application, words such as "exemplary" or "such as" are used to mean serving as examples, illustrations, or descriptions. Any embodiment or design described herein as "exemplary" or "for example" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion that may be readily understood.
It is appreciated that reference throughout this specification to "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 application. Thus, the various embodiments are not necessarily all referring to the same embodiment throughout the specification. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in various embodiments of the present application, the sequence number of each process does not mean that the execution sequence of each process should be determined by the function and the internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.
It can be appreciated that some optional features of the embodiments of the present application may be implemented independently in some scenarios, independent of other features, such as the scheme on which they are currently based, to solve corresponding technical problems, achieve corresponding effects, or may be combined with other features according to requirements in some scenarios. Accordingly, the apparatus provided in the embodiments of the present application may also implement these features or functions accordingly, which is not described herein.
Throughout this application, unless specifically stated otherwise, identical or similar parts between the various embodiments may be referred to each other. In the various embodiments of the present application, terms and/or descriptions between the various embodiments are consistent and may refer to each other in the absence of a particular explanation or logic conflict, and features of the various embodiments may be combined to form new embodiments in accordance with their inherent logic. The embodiments of the present application described below do not limit the scope of the present application.
The Sidelink (SL), unlike the uplink (uplink) and the downlink (downlink), is a new link technology introduced to support direct communication between devices. SL was introduced at the earliest in the third generation partnership project (3rd generation partnership project,3GPP) Release 12 device-to-device (D2D) application scenario. Subsequently, long term evolution (long term evolution, LTE) internet of vehicles (vehicle to everything, V2X) was developed in 3gpp rel.14 and enhanced in rel.15.
The V2X standard based on the fifth generation (the fifth generation, 5G) new air interface (NR) was developed in 3gpp rel.16 and enhanced in 3gpp rel.17. The 3GPP Rel.16 is mainly oriented to an application scene of the Internet of vehicles, supports direct communication between vehicles, and meets the requirement of V2X low-level service. The 3gpp rel.17 enhances the reliability of SL, further considering direct communication between power limited devices such as handheld terminals, e.g. between devices such as handsets, bracelets, watches, etc.
The 3GPP Rel.16 defines two resource allocation patterns for SL, mode 1 and mode 2. In mode 1, a transmitting terminal under the coverage of a base station applies for SL resources for data transmission to the base station through a scheduling request signaling. The base station then schedules resources for the sending terminal and the corresponding receiving terminal so as to enable the sending terminal and the receiving terminal to perform data transmission; or the base station configures SL resources for data transmission directly for the transmitting terminal through radio resource control (radio resource control, RRC) signaling and/or physical layer signaling.
That is, under mode 1, the base station performs centralized resource scheduling on the SL resources, so that the signal interference and resource overlapping problems in the SL can be effectively avoided. However, mode 1 is heavily dependent on the base station, and the terminal must be within network coverage to operate under mode 1. In addition, in the process of applying SL resources to the base station, the sending terminal needs to perform multiple signaling interactions with the base station, so that the resource application time is longer. Thus, mode 1 is not suitable for some SL scenarios (e.g., internet of vehicles) where there is no base station or where latency requirements are high.
In mode 2, the resources for SL transmissions are determined by the sending terminal itself through channel awareness and selection. At this time, the terminal can operate In a scenario without network coverage. mode 2 supports both dynamic allocation and semi-static allocation schemes. The dynamic scheme selects a new resource for each transport block (transmission block, TB) and reserves resources for retransmission of that TB. The semi-static scheme selects and reserves periodic resources for successive TBs (e.g., periodic TBs) and their retransmissions. Wherein the resource reservation information is in the first order (1 st -stage) side uplink control information (sidelink control information, SCI).
In mode 2, the higher layer triggers SL resource selection when a new TB is generated, or the previously reserved resources under the semi-static allocation scheme are not suitable for the newly generated TB transmission. When the SL resource Selection is triggered in the time slot n, the sending terminal determines candidate resources in a Selection Window (Selection Window) according to the resource reservation information of other terminals perceived in the perception Window (Sensing Window) for TB transmission. In the mode 2 resource selection process, the higher layer provides the following parameters:
layer 1 (L1) priority prio of newly generated TB TX ；
Number of subchannels L for the TB transmission in a single time slot subCH ；
Resource reservation interval for consecutive multiple TB transmissions, i.e. resource reservation period P rsvp_TX (in milliseconds ms), converted to logical time slots, denoted as P' rsvp_TX ；
Resource reselection counter C resel ；
The list of available resource reservation intervals sl-resource reservation period list comprises the values of all the resource reservation intervals allowed in the resource pool.
Wherein the resource reservation interval and the resource reselection counter are parameters in a semi-static allocation scheme. Illustratively, assuming that SL resource selection is triggered at slot n, the specific steps for mode 2 resource allocation are as follows:
step 1), determining a selection window.
Wherein the time slot range of the selection window is time slot [ n+T ] 1 ,n+T 2 ]。T 1 Is determined by the capabilities of the terminal, T 2 By higher layer parameters sl-SelectionWindowList and packet delay budget (packet)delay bridge, PDB).
Step 2), determining a perception window.
Wherein, the time slot range of the sensing window isT 0 Is determined by the higher layer parameter sl-SensingWindow, ">Determined by the subcarrier spacing employed by the SL resource pool.
Within the sensing window, the terminal continues to listen to each time slot in the resource pool, decodes the first order (1) in the physical sidelink control channel (physical sidelink control channel, PSCCH) on each time slot st -stage) side-uplink control information (sidelink control information, SCI) and measuring reference signal received power (reference signal received power, RSRP) of demodulation reference signals (demodulation reference signal, DMRS) of the PSCCH and/or of the PSCCH scheduled physical side-uplink shared channel (physical sidelink shared channel, PSSCH).
Step 3), obtain 1 st Priority p indicated in stage SCI i ＝prio RX And priority p of own terminal transmission TB configured by high layer j ＝prio TX And determining p i And p j Correlated RSRP threshold Th (p i ,p j )。
Step 4), determining an initial set of single-slot candidate resources S A 。
Wherein the initial single-slot candidate resource set S A Including all single slot candidate resources in the SL resource pool that are within the selection window. Single time slot candidate resource R x,y Defined as a time slotInner continuous L starting from subchannel x subCH Sub-channels. Initial set of single-slot candidate resources S A The total number of single time slot candidate resources in the list is recorded as M total 。
Step 5), initial set of single slot candidate resources S A A single slot candidate resource R in (1) x,y (assumed to be in time slots) When the following two conditions are satisfied simultaneously, the single time slot candidate resource is selected from S A Excluding:
a) Terminal in time slotNo channel listening is performed. Wherein (1)>To perceive time slots within the window.
b) Value P for any resource reservation interval allowed by the higher layer parameter sl-resource reservation period list rsvp Time slotAnd->There is an overlap. Wherein q is guaranteed time slot->Located in the selection window [ n+T ] 1 ,n+T 2 ]The positive integer in the reactor is more than or equal to 0 and less than or equal to j and less than or equal to C resel -1。
In this application, the subscript of a slot may indicate an index of the slot, for example, The subscript m in (a) indicates that the slot index is m, < >>The subscript in (a) indicates that the slot index is m+q×p rsvp 。
Step 6), initial set of single slot candidate resources S A Some of (a)Single slot candidate resource R x,y (assumed to be in time slots) When the following three conditions are satisfied simultaneously, the single time slot candidate resource is selected from S A Excluding:
a) Terminal in time slotDecoding 1 on a PSCCH bearer st Stage SCI, 1 st The resource reservation period (Resource reservation period) field in the stage SCI exists and the value indicated by the resource reservation period field is P rsvp_RX (in ms) which is converted into a period in slots +.>In addition, the 1 st The Priority (Priority) field in the stage SCI indicates a Priority of prio RX . The PSCCH and PSSCH scheduled by the PSCCH occupy sub-channel resources of R in the frequency domain RX 。
Illustratively, the PSCCH and the PSCCH scheduled pscsch may be located in the same time slot in the time domain. For example, taking a slot comprising 14 SL symbols as shown in fig. 1, the PSCCH may occupy part of the frequency domain resources of a small portion of the symbols in the slot, and the PSSCH may occupy all of the frequency domain resources of a large portion of the symbols in the slot. Wherein AGC refers to automatic gain control (automatic gain control, AGC).
b) The RSRP of the DMRS of the PSCCH, or of the pscsch scheduled by the PSCCH, is greater than the RSRP threshold Th (prio RX ,prio TX )。
c) Time slotsResource R on RX And->There is overlap, where q is the guaranteed time slotLocated in the selection window [ n+T ] 1 ,n+T 2 ]A positive integer within. Time slot->Resource R on RX And reserving periodic resources for other terminals. />Representing single-slot candidate resources R x,y According to period P' rsvp_TX The extended resource is C which is more than or equal to 0 and less than or equal to j resel -1。
It will be appreciated that step 5) above can be understood as a time slot of the terminal within the sensing windowThe above-mentioned correlation implementation when channel sensing is not performed, step 6) can be understood as the slot +.>Up-decoding 1 of a PSCCH st -a related implementation at stage SCI. That is, for a certain time slot within the sensing window +.>The terminal need only perform one of steps 5) and 6). I.e. if the terminal is in the slot of the sensing window +.>And (5) performing step 5) without channel interception; if the terminal is in the slot of the sensing window +.>Up-decoding 1 of a PSCCH st Stage SCI, execute step 6).
Step 7), if the initial single time slot candidate resource set S A The number of remaining single slot candidate resources in the network is smallIn X.M total Threshold Th (prio RX ,prio TX ) The RSRP threshold is raised by 3dB and returns to step 4) to continue the process. If S A The number of remaining single slot candidate resources in the list is greater than X.M total Will S A Reporting to the higher layer. X is a number greater than 0 and less than 1 of the higher layer configuration.
Illustratively, terminal 1 triggers the resource selection procedure at slot n, assuming that terminal 1 passes 1 decoded within the perceptual window st The stage SCI knows that the periodic resources reserved by the other terminal are as shown in fig. 2 (indicated by the diagonal filled rectangle in fig. 2), and since the periodic resources reserved by the other terminal include the resources overlapping with the resources a in the selection window, the terminal 1 can select the resources a in the perception window from the initial single-slot candidate resource set S A Excluding from the middle.
In the drawings of the present application, for convenience of description, the number of subchannels is L subCH For example, 1 is not shown to limit the number of subchannels L subCH Must be equal to 1, the application is directed to L subCH The value of (2) is not limited.
However, given the near-far effect and the effects of non-ideal in-band transmission, the pscsch of a PSCCH schedule may produce a power leakage on adjacent sub-channels, severely degrading the quality of the adjacent sub-channels.
Illustratively, as shown in fig. 3, assuming that the single-slot candidate resources indicated by the rectangle filled with oblique lines are reserved for the resources perceived by the terminal 1 to be reserved for the terminal 2, the PSCCH and/or PSSCH transmitted on these resources may generate power leakage on the sub-channel 2 of the corresponding slot, i.e. there is power leakage of the PSCCH and/or PSSCH transmitted by the terminal 2 on the resources indicated by the rectangle filled with horizontal lines in fig. 3.
According to the current mode 2 resource allocation, no PSCCH scheduling PSCCH is present on subchannel 2, or terminal 1 does not decode correctly 1 in a PSCCH on subchannel 2 due to interference from terminal 2 st At stage SCI, terminal 1 will not be in the initial set of single slot candidate resources S A Excluding single-slot candidate resources on subchannel 2, thereby causing the terminal to report to the higher-layer candidate resource setIncluding single-slot candidate resources with poor channel quality. For example, terminal 1 will not change resource B within the sensing window from the initial set of single-slot candidate resources S A Excluding from the middle.
Based on the above, the present application provides a resource selection method, so that a candidate resource set determined by a terminal includes a candidate resource with better quality, thereby improving the transmission efficiency of a side uplink.
The technical solution of the embodiment of the present application may be used in various communication systems, where the communication system may be, for example: internet of things (vehicle to everything, V2X) systems, device-to-device (D2D) systems, machine-to-machine (machine to machine, M2M) systems, internet of things (Internet of Things, ioT), wireless fidelity (wireless fidelity, wi-fi), worldwide interoperability for microwave access (Worldwide Interoperability for Microwave Access, wiMAX) systems, and other next generation communication systems, and the like. And are not limited.
The technical solution of the embodiment of the application can be applied to various communication scenes, for example, one or more of the following communication scenes: enhanced mobile broadband (enhanced mobile broadband, emmbb), ultra-reliable low latency communication (ultra reliable low latency communication, URLLC), machine type communication (machine type communication, MTC), large-scale machine type communication (massive machine type communications, mctc), D2D, V2X, and IoT, among other communication scenarios.
The above communication system and communication scenario to which the present application is applied are merely examples, and the communication system and communication scenario to which the present application is applied are not limited thereto, and are collectively described herein, and are not described in detail.
Referring to fig. 4, a communication system is provided in an embodiment of the present application. The communication system includes a plurality of terminals. Wherein, each terminal can communicate with each other through SL.
Alternatively, the terminal in the embodiment of the present application may refer to a device having a wireless transceiver function. A terminal may also be called a User Equipment (UE), a terminal device, an access terminal, a subscriber unit, a subscriber station, a Mobile Station (MS), a remote station, a remote terminal, a Mobile Terminal (MT), a user terminal, a wireless communication device, a user agent, a user equipment, or the like. The terminal may be, for example, a terminal in an IoT, V2X, D2D, M M, 5G network, or future evolved public land mobile network (public land mobile network, PLMN). The terminal can be deployed on land, including indoor or outdoor, hand-held or vehicle-mounted; can also be deployed on the water surface (such as ships, etc.); but may also be deployed in the air (e.g., on aircraft, balloon, satellite, etc.).
By way of example, the terminals may be IoT devices (e.g., sensors, electricity meters, water meters, etc.), V2X devices, stations (STAs) in wireless local area networks (wireless local area networks, wls), cellular telephones, cordless telephones, session initiation protocol (session initiation protocol, SIP) phones, wireless local loop (wireless local loop, WLL) stations, personal digital processing (personal digital assistant, PDA) devices, handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices (which may also be referred to as wearable smart devices), tablet or wireless-transceiver-enabled computers, virtual Reality (VR) terminals, wireless terminals in industrial control (industrial control), wireless terminals in unmanned aerial vehicle (self driving), wireless terminals in remote medical (remote media), wireless terminals in smart grid (smart) systems, wireless terminals in transportation security (transportation safety), wireless terminals in smart city (smart city) systems, home-to-vehicle-capable wireless communication capability V-to-vehicle, UAV-vehicle-to-unmanned aerial vehicle-2, and the like. The terminal may be mobile or fixed, and is not particularly limited in this application.
Alternatively, the terminal in the embodiment of the present application may also be referred to as a communication device, which may be a general-purpose device or a special-purpose device, which is not specifically limited in the embodiment of the present application.
Alternatively, in the embodiment of the present application, the terminal in fig. 4 may be implemented by the communication device 50 in fig. 5. Fig. 5 is a schematic structural diagram of a communication device 50 according to an embodiment of the present application. The communication device 50 includes one or more processors 501, a communication bus 502, and at least one communication interface (illustrated in fig. 5 as including a communication interface 504 and a processor 501 by way of example only), and optionally a memory 503.
The processor 501 may be a general purpose central processing unit (central processing unit, CPU), microprocessor, application Specific Integrated Circuit (ASIC), or one or more integrated circuits for controlling the execution of programs in the present application, or processing cores for processing data (e.g., computer program instructions). The processor may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor.
In a particular implementation, as one embodiment, processor 501 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 5.
In a particular implementation, as one embodiment, the communication device 50 may include a plurality of processors.
The communication bus 502 may be a peripheral component interconnect standard (peripheral component interconnect, PCI) bus or an extended industry standard architecture (extended industry standard architecture, EISA) bus, or the like. The bus may be classified as an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in fig. 5, but not only one bus or one type of bus. The communication bus 502 is used to connect the different components in the communication device 50 so that the different components can communicate.
The communication interface 504, which may be a transceiver module, is used to communicate with other devices or communication networks, such as ethernet, radio access network (radio access network, RAN), wireless local area network (wireless local area networks, WLAN), etc. For example, the communication interface 504 may be a device such as a transceiver, or the like. Alternatively, the communication interface 504 may be a transceiver circuit located in the processor 501, so as to implement signal input and signal output of the processor.
The memory 503 may be a device having a memory function. For example, but not limited to, a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (random access memory, RAM) or other type of dynamic storage device that can store information and instructions, an electrically erasable programmable read-only memory (electrically erasable programmable read-only memory, EEPROM), a compact disc read-only memory (compact disc read-only memory) or other optical disk storage, optical disk storage (including compact discs, laser discs, optical discs, digital versatile discs, blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory may be self-contained and coupled to the processor via communication bus 502. The memory may also be integrated with the processor.
The memory 503 is used for storing computer-executable instructions for executing the embodiments of the present application, and is controlled by the processor 501 to execute the instructions. The processor 501 is configured to execute computer-executable instructions stored in the memory 503 to implement the methods provided in the embodiments of the present application.
Alternatively, in the embodiment of the present application, the processor 501 may perform functions related to processing in a method provided in the embodiment of the present application, where the communication interface 504 is responsible for communicating with other devices or communication networks, and the embodiment of the present application is not limited in detail.
Alternatively, the computer-executable instructions in the embodiments of the present application may be referred to as application program codes, which are not specifically limited in the embodiments of the present application.
In a specific implementation, as an embodiment, the communication apparatus 50 may further include an output device 505 and an input device 506. The output device 505 communicates with the processor 501 and may display information in a variety of ways. For example, the output device 505 may be a liquid crystal display (liquid crystal display, LCD), a light emitting diode (light emitting diode, LED) display device, a Cathode Ray Tube (CRT) display device, or a projector (projector), or the like. The input device 506 is in communication with the processor 501 and may receive user input in a variety of ways. For example, the input device 506 may be a mouse, a keyboard, a touch screen device, a sensing device, or the like.
It should be noted that the constituent structure shown in fig. 5 does not constitute a limitation of the communication apparatus, and the communication apparatus may include more or less components than those shown in fig. 5, or may combine some components, or may be arranged in different components.
It may be understood that, in the embodiments of the present application, the terminal may perform some or all of the steps in the embodiments of the present application, these steps or operations are merely examples, and the embodiments of the present application may also perform other operations or variations of various operations. Furthermore, the various steps may be performed in a different order presented in accordance with embodiments of the present application, and it is possible that not all of the operations in the embodiments of the present application may be performed.
Referring to fig. 6, a flowchart of a resource selection method provided in an embodiment of the present application may be applied to a first terminal, which may be any terminal in the communication system shown in fig. 4. As shown in fig. 6, the resource selection method may include the steps of:
s601, the first terminal determines a candidate resource set.
Alternatively, the candidate set of resources may include resources in the SL resource pool that are located within the selection window. The first terminal may obtain relevant parameters from a higher layer to determine the selection window and the candidate resource set, and reference may be made to the relevant description in the above step 2) and step 4), which will not be described herein.
Illustratively, in the embodiment of the present application, the minimum time granularity of the resource may be an orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) time slot, or a subframe, or a frame; the minimum frequency granularity of a resource may be a subchannel. For example, one resource in the embodiment of the present application may be consecutive L subchannels starting from subchannel x in one slot. When the minimum time granularity of the resource is OFDM time slot, the resource in this application may be referred to as a single-slot resource, and the resource in the candidate resource set may be referred to as a single-slot candidate resource.
Wherein the candidate resource set does not include the first resource. The interference power on a second resource associated with the first resource is greater than or equal to a first threshold. For example, when the minimum time granularity of the resources is OFDM slots, the first resources may be referred to as first single slot candidate resources.
Wherein, the periodically extended resource of the second resource and the resource set corresponding to the first resource are overlapped (partially or completely overlapped). In some embodiments, the association of the first resource with the second resource may be understood as: the periodically extended resources of the second resources overlap with the corresponding resource sets of the first resources.
The time domain position of the second resource overlaps with the time domain position of the third resource, and the frequency domain position of the second resource does not overlap with the frequency domain position of the third resource. Illustratively, the frequency domain location of the second resource is adjacent to the frequency domain location of the third resource. Of course, the frequency domain position of the second resource and the frequency domain position of the third resource may not be adjacent, which is not specifically limited in the present application.
Wherein the third resource is a resource within the perception window. The third resource carries the PSCCH of the second terminal and/or the PSCCH scheduled PSCCH of the PSCCH. For example, the first terminal may acquire the relevant parameters from the higher layer to determine the sensing window, and reference may be made to the relevant description in the above step 1), which is not described herein.
In some embodiments, the PSCCH of the second terminal and/or the PSCCH scheduled by the PSCCH are carried on the third resource, which may also be understood as: the third resource carries the PSCCH sent by the second terminal and/or the PSCCH scheduled by the PSCCH, which may be replaced with each other.
Wherein the interference power on the second resource is determined based on the power on the second resource of the signal carried by the third resource. That is, in some embodiments, the interference power on the second resource may be considered to be caused by the PSCCH and/or PSSCH transmitted by the second terminal on the third resource. Thus, the interference on the second resource may be understood as non-common frequency interference caused by the second terminal to the first terminal.
Optionally, the interference power on the second resource associated with the first resource is greater than or equal to the first threshold, which may be a target condition. If the candidate resource set initially determined by the first terminal includes the first resource, the first terminal may exclude the first resource from the candidate resource set when the target condition is satisfied, so as to obtain a candidate resource set that does not include the first resource.
Alternatively, the power of the signal carried by the third resource leaked on the second resource may be a general in-band radiation power, or a carrier leakage power, or an image interference power.
Alternatively, the second terminal may be a terminal sharing the same side uplink resource pool as the first terminal, and/or a distance between the second terminal and the first terminal is less than or equal to the second threshold.
Optionally, the periodically-extended resource of the second resource is determined according to the second resource and the first period of the second terminal. The first period of the second terminal is a period in which the second terminal reserves resources. The PSCCH of the second terminal carried on the third resource may carry 1 st Stage SCI, 1 st The stage SCI may indicate the first period of the second terminal.
Optionally, the resource set corresponding to the first resource includes the first resource and/or a periodically extended resource of the first resource, where the periodically extended resource of the first resource is determined according to the first resource and the second period of the first terminal. For example, the frequency domain position of the periodically-extended resource of the first resource overlaps with the frequency domain position of the first resource, and the time domain period is the second period. The second period of the first terminal is a period of the first terminal reserving resources, which may be configured by higher layer parameters.
For example, assume that the set of resources corresponding to the first resource includes the first resource, as shown in fig. 7, the first resource is denoted as resource 1, the second resource is denoted as resource 2, the third resource is denoted as resource 3, and the periodically-extended resource of the second resource is denoted by a rectangle filled with horizontal lines. Referring to fig. 7, one of the periodically-extended resources of the second resource overlaps with resource 1, the time-domain positions of resource 2 and resource 3 overlap, and the frequency-domain positions do not overlap (illustrated in fig. 7 by the frequency-domain position adjacency). Based on this example, when the interference power on resource 2 is greater than or equal to the first threshold, the first terminal excludes resource 1 from the candidate set of resources, i.e., does not include resource 1 in the candidate set of resources.
It will be appreciated that, since the periodically-extended resources of the second resources are determined according to the first periodicity of the second resources and the second terminal, and the time domain position of the second resources overlaps with the time domain position of the third resources, the periodic resources reserved by the second terminal (i.e., the periodically-extended resources of the third resources determined according to the third resources and the first periodicity of the second terminal) overlap with the time domain positions of the periodically-extended resources of the second resources. Thus, on the periodically-extended resources of the second resource, there is interference caused by the PSCCH and/or PSSCH transmitted by the second terminal on the periodically-extended resources of the third resource. At this time, if the periodically extended resource of the second resource overlaps with the first resource or the periodically extended resource of the first resource, then there is interference on the first resource. In this scenario, the candidate resource determined by the first terminal does not include the first resource, so that the first terminal can be prevented from transmitting by using the first resource with poor quality or the periodically extended resource of the first resource.
For example, referring to fig. 8, the periodically-extended resources of the third resource are represented by rectangles filled with oblique lines, where one resource (i.e., resource 4) of the periodically-extended resources of the third resource is the same as the time-domain position of resource 1, and the transmission of the second terminal on resource 4 will cause interference to resource 1, where the quality of resource 1 is poor, and resource 1 may be excluded from the candidate resource set.
Alternatively, the respective thresholds (e.g., the first threshold, the second threshold) in the present application may be predefined by a protocol, or may be configured by the network device through a higher layer parameter, or may be determined by the first terminal, which is not specifically limited in the present application.
Alternatively, the first terminal may perform step S602 described below after determining the candidate resource set.
S602, using the resources in the candidate resource set to perform data transmission.
Optionally, after determining the candidate resource set, the first terminal may select at least one resource in the candidate resource set, and perform data transmission on the at least one resource.
Based on the scheme provided by the application, when determining the resource for data transmission, if the frequency domain resource A on a certain time slot in the sensing window decodes the PSCCH of another terminal, the terminal can acquire the interference power on the frequency domain resource B which is not overlapped with the frequency domain resource A on the time slot, and when the interference power on the frequency domain resource B is large, the resource with the frequency domain position being the frequency domain resource B in the candidate resource set is eliminated, so that the interference on the resource for data transmission finally determined by the terminal is small or no interference exists, and the reliability of data transmission is improved.
The overall flow of the resource selection method provided in the present application is described above. Some details of this resource selection method are described in detail below.
Periodically extending resources for the second resource:
as a possible implementation, the periodically-extended resource of the second resource may be determined only according to the first period of the second resource and the second terminal. For example, the frequency domain position of the periodically-extended resource of the second resource overlaps with the frequency domain position of the second resource, and the time domain period is the second period.
Exemplary, in this possible implementation, if the second period is denoted as P' rsvp_TX The first resource is denoted as R x,y The first period is denoted as P' rsvp_RX The second resource is denoted as R RX,1 The time slot in which the second resource is located is denoted asThen, the periodically-extended resource of the second resource overlaps with the resource set corresponding to the first resource, which may be expressed as: time slotsUpper part of the cylinderResource R RX,1 And->There is an overlap. Wherein q is guaranteed time slot->Located in the selection window [ n+T ] 1 ,n+T 2 ]A positive integer within. J is more than or equal to 0 and less than or equal to C resel -1。
As another possible implementation, the periodically-extended resource of the second resource is determined according to the second resource, the first period of the second terminal, and the third period of the third terminal.
Wherein the second resource carries the PSCCH of the third terminal and/or the PSCCH scheduled by the PSCCH. That is, the second resource is used to carry the PSCCH of the third terminal and/or the PSCCH scheduled PSCCH, or the third terminal transmitted the PSCCH of the third terminal and/or the PSCCH scheduled PSCCH on the second resource.
Optionally, the third period of the third terminal is a period in which the third terminal reserves resources. The PSCCH of the third terminal carried on the second resource may carry 1 st Stage SCI, 1 st The stage SCI may indicate a third period of a third terminal.
Alternatively, in this possible implementation manner, the periodically extended resource of the second resource may be a union of the resources after the second resource is extended according to the first period of the second terminal, and the resources after the second resource is extended according to the third period of the third terminal. Alternatively, the periodically-extended resource of the second resource may be a resource after the second resource is extended by a least common multiple of the first period and the third period. For example, the frequency domain position of the periodically-extended resource of the second resource is the same as the second resource, and the time domain period is the least common multiple of the first period and the third period.
Exemplary, in this possible implementation, if the second period is denoted as P' rsvp_TX The first resource is denoted as R x,y The first period is denoted as P' rsvp_RX The third period is denoted as P' rsvp_RX,3 The second resource is denoted as R RX,1 The time slot in which the second resource is located is denoted asThen, the periodically-extended resource of the second resource overlaps with the resource set corresponding to the first resource, which may be expressed as: time slot->Or->Resource R on RX,1 And->There is an overlap. Wherein q is guaranteed time slot->Located in the selection window [ n+T ] 1 ,n+T 2 ]A positive integer within. p is guaranteed time slot->Located in the selection window [ n+T ] 1 ,n+T 2 ]A positive integer within. J is more than or equal to 0 and less than or equal to C resel -1。
For interference power on the second resource:
as a possible implementation, the interference power on the second resource is determined only according to the power leaked on the second resource by the signal carried by the third resource.
Illustratively, the interference power on the second resource is equal to the power on the second resource of the signal carried by the third resource.
As another possible implementation manner, the interference power on the second resource is determined according to the power leaked on the second resource by the signal carried by the third resource, and the signal receiving power of the PSCCH and/or the PSCCH scheduled by the PSCCH of the third terminal carried on the second resource.
That is, the interference on the second resource includes, in addition to the non-co-channel interference caused by the second terminal to the first terminal, the co-channel interference caused by the third terminal to the first terminal.
In some embodiments, the PSCCH of the third terminal and/or the PSCCH scheduled by the PSCCH are carried on the second resource, which may also be understood as: the second resource carries the PSCCH sent by the third terminal and/or the PSCCH scheduled by the PSCCH, which may be interchanged.
Optionally, in this possible implementation manner, the interference power on the second resource may be a sum of a power of the signal carried by the third resource leaked on the second resource, and a signal receiving power of a PSCCH and/or a PSCCH of the PSCCH schedule of the third terminal carried on the second resource; or may be an average of both; or may be the maximum of the two.
Optionally, the signal received power of the PSCCH of the third terminal may be a sum of signal received powers on a plurality of physical resource blocks (physical resource block, PRBs) or Resource Elements (REs) occupied by the PSCCH; or may be the maximum of the signal received power over multiple PRBs or REs occupied by the PSCCH; or may be an average of the signal received power over multiple PRBs or REs occupied by the PSCCH. The signal received power of the PSCCH may refer to the description of the signal received power of the PSCCH, and will not be described herein.
Alternatively, the interference power on the second resource may be measured by the first terminal. Alternatively, the fourth terminal may obtain the measurement and send the measurement to the first terminal.
Optionally, the fourth terminal may be used as an auxiliary terminal of the first terminal, to assist the first terminal in selecting resources. Before the first terminal performs resource selection, the first terminal and the fourth terminal can perform negotiation through signaling interaction, so that the fourth terminal serves as an auxiliary terminal of the first terminal.
Optionally, the fourth terminal may sense on each resource in the sensing window, and if PSCCH and/or PSSCH are sensed on a certain resource, the interference power on the relevant resource of the resource may be determined. For example, assuming that the fourth terminal perceives the PSCCH of the second terminal and/or the PSCCH scheduled by the PSCCH on a third resource within a perceived window, the fourth terminal may determine the interference power on the second resource. The relationship between the second resource and the third resource may refer to the description in step S601, and will not be described herein.
Optionally, after determining the interference power on the second resource, the fourth terminal may send indication information to the first terminal, where the indication information is used to indicate the interference power on the second resource. Correspondingly, the first terminal receives the indication information from the fourth terminal, and acquires the interference power on the second resource according to the indication information.
The method for determining the interference power on the second resource provided by the application is applicable to the first terminal or the fourth terminal.
Power on the second resource is leaked for signals carried by the third resource:
as one possible implementation, the power of the signal carried by the third resource that leaks on the second resource is the signal received power on the first channel state information interference measurement (channel state information-interference measurement, CSI-IM) resource. Wherein the first CSI-IM resource is located on the second resource.
It is understood that the power of the signal carried by the third resource leaked on the second resource is the signal received power on the first CSI-IM resource and is the interference power for the first terminal.
Alternatively, the CSI-IM resources may be located on symbols other than guard (guard) symbols. Illustratively, as shown in fig. 9, the CSI-IM resource may be located on the last symbol before the guard symbol. Herein, the symbol in the present application may represent a time length, for example, may be an OFDM symbol, and is not limited.
Alternatively, the CSI-IM resources are not used for PSSCH and PSCCH transmissions, i.e., the PSSCH and PSCCH transmitted by the terminal do not occupy the CSI-IM resources. The terminal may measure interference of other terminals on the CSI-IM resources.
In some embodiments, the first CSI-IM resource may be configured by the third terminal. The third terminal may send the first configuration signalThe first configuration information is used for configuring the first CSI-IM resource on the second resource. The first configuration information may be carried at 1 of the third terminal st In stage SCI. The first configuration information may indicate a time domain location and a frequency domain location where the first CSI-IM resource is located.
Optionally, when the interference power on the second resource is determined by the fourth terminal, the fourth terminal may receive the first configuration information sent by the third terminal.
In other embodiments, the CSI-IM resources may be network device configured. As illustrated in fig. 10, before step S602, the resource selection method provided in the present application may further include the following steps:
the network device sends the second configuration information to the first terminal, and correspondingly, the first terminal receives the second configuration information from the network device. The second configuration information is used for configuring periodic CSI-IM resources, and the periodic CSI-IM resources comprise first CSI-IM resources. The period of the periodic CSI-IM resources configured by the network device may be N time slots, where N is a positive integer. That is, the network device may periodically configure CSI-IM resources in the time domain.
Alternatively, for the frequency domain location of the CSI-IM resources, the network device may configure certain REs in each subchannel as CSI-IM resources. At this time, the second configuration information may include a starting position of REs as CSI-IM resources on a frequency domain and the number of REs.
Alternatively, the network device may periodically configure the frequency domain location of the CSI-IM resources with M subchannels. For example, taking M equal to 2 as an example, the network device may configure part of REs on subchannels with indexes 0, 2, 4, 6, 8, etc. as CSI-IM resources. At this time, the second configuration information may include a starting position of REs as CSI-IM resources on a frequency domain, the number of REs, and a period M.
Alternatively, the network device may be a device that accesses the terminal to the wireless network, such as various forms of base stations, transmission reception points (transmission reception point, TRP), etc. The form of the network device is not particularly limited in this application.
Optionally, when the interference power on the second resource is determined by the fourth terminal, the network device may send second configuration information to the fourth terminal, and correspondingly, the fourth terminal receives the second configuration information from the network device.
In still other embodiments, the time-frequency location of the CSI-IM resources may also be protocol-specified, as this application is not specifically limited. Alternatively, the signal received power on the first CSI-IM resource may be an average received power on a plurality of REs included in the first CSI-IM resource, or may be a maximum received power on a plurality of REs included in the first CSI-IM resource.
Alternatively, the signal received power on the first CSI-IM resource may be measured by the first terminal. Alternatively, the fourth terminal may obtain the measurement and send the measurement to the first terminal.
As another possible implementation, the power of the signal leakage carried by the third resource on the second resource is determined according to the signal received power on the first CSI-IM resource and the signal received power on a resource (denoted as a non-CSI-IM resource) other than the first CSI-IM resource in the second resource. The first CSI-IM resource may refer to the above related description, and will not be described herein.
Alternatively, the power of the signal leakage carried by the third resource on the second resource may be the maximum or average of the signal received power on the first CSI-IM resource of the second resource and the signal received power on the non-CSI-IM resource of the second resource.
Alternatively, the signal received power on the non-CSI-IM resource of the second resource may be an average signal received power on a plurality of REs included in the non-CSI-IM resource, or may be a maximum signal received power on the plurality of REs.
Based on the scheme, accurate interference power values can be obtained through measurement, and the situation that the terminal excludes resources with better quality from the candidate resource set is avoided.
As yet another possible implementation, the power of the signal carried by the third resource on the second resource is determined according to the signal received power on the third resource and an in-band emission (IBE) template. The first terminal may input the signal receiving power on the third resource into the in-band radiation template, to obtain the power of the signal carried by the third resource leaked on the second resource.
Alternatively, the in-band radiation template may describe a ratio of an average output power on PRBs in a transmission bandwidth occupied by the terminal to an average output power on PRBs outside the transmission bandwidth. In some examples, the in-band radiation templates may be preconfigured, e.g., the in-band radiation templates may be predetermined by the network device and sent to the first terminal or the fourth terminal, e.g., the network device preconfigured by layer 1 or layer 3 signaling, etc. In other examples, the first terminal or the fourth terminal may obtain an in-band radiation template preconfigured at the second terminal, e.g., the first terminal or the fourth terminal requests the second terminal to transmit the in-band radiation template.
Alternatively, the signal received power on the third resource may be determined by the signal received power of a PSCCH of the second terminal carried on the third resource and/or the signal received power of a PSCCH scheduled by the PSCCH. Exemplary: the signal receiving power on the third resource is the signal receiving power of the PSCCH of the second terminal;
Or, the signal receiving power on the third resource is the signal receiving power of the PSSCH scheduled by the PSCCH;
or the signal receiving power on the third resource is the maximum value of the signal receiving power of the PSCCH of the second terminal and the signal receiving power of the PSSCH scheduled by the PSCCH;
or the signal receiving power on the third resource is the minimum value of the signal receiving power of the PSCCH of the second terminal and the signal receiving power of the PSSCH scheduled by the PSCCH;
alternatively, the signal received power on the third resource is an average of the signal received power of the PSCCH of the second terminal and the signal received power of the PSCCH scheduled PSCCH.
Based on the possible implementation, the first terminal may estimate the interference power on the second resource according to the signal receiving power on the third resource and the in-band radiation template, thereby reducing implementation complexity.
Based on the above scheme, taking the time domain period of the periodically extended resource of the second resource as the first period, the interference power on the second resource is equal to the power of the signal carried by the third resource leaked on the second resource, and the power of the signal carried by the third resource leaked on the second resource is the signal receiving power on the first CSI-IM resource as an example, the present application further provides a specific step of mode 2 resource selection, and the step of resource selection is as follows assuming that the SL resource triggers mode 2 resource selection in the time slot n:
Step 1), determining a selection window.
Step 2), determining a perception window.
Step 3), obtain 1 st Priority p indicated in stage SCI i ＝prio RX And priority p of own terminal transmission TB configured by high layer j ＝prio TX And determining p i And p j Correlated RSRP threshold Th (p i ,p j )。
Step 4), determining an initial set of single-slot candidate resources S A 。
Step 5), initial set of single slot candidate resources S A A single slot candidate resource R in (1) xy (assumed to be in time slots) When the following two conditions are satisfied simultaneously, the single time slot candidate resource is selected from S A Excluding:
a) Terminal in time slotNo channel listening is performed. Wherein (1)>To perceive time slots within the window.
b) Value P for any resource reservation interval allowed by the higher layer parameter sl-resource reservation period list rsvp Time slotAnd->There is an overlap. Wherein q is guaranteed time slot->Located in the selection window [ n+T ] 1 ,n+T 2 ]The positive integer in the reactor is more than or equal to 0 and less than or equal to j and less than or equal to C resel -1。
In this application, the subscript of a slot may indicate an index of the slot, for example,the subscript m in (a) indicates that the slot index is m, < >>The subscript in (a) indicates that the slot index is m+q×p rsvp 。
Step 6), initial set of single slot candidate resources S A A single slot candidate resource R in (1) x,y (assumed to be in time slots) When the following three conditions are satisfied simultaneously, the single time slot candidate resource is selected from S A Excluding:
a) Terminal in time slotDecoding 1 on a PSCCH bearer st Stage SCI, 1 st The resource reservation period (Resource reservation period) field in the stage SCI exists and the value indicated by the resource reservation period field is P rsvp_RX (in ms) which is converted into a period in slots P' rsvp_RX . In addition, the 1 st The Priority (Priority) field in the stage SCI indicates a Priority of prio RX . The PSCCH and PSSCH scheduled by the PSCCH occupy sub-channel resources of R in the frequency domain RX 。
b) The RSRP of the DMRS of the PSCCH, or of the PSSCH scheduled by the PSCCH, is largeAt RSRP threshold Th (prio RX ,prio TX )。
c) Time slotsResource R on RX And->There is overlap, where q is the guaranteed time slotLocated in the selection window [ n+T ] 1 ,n+T 2 ]A positive integer within. Time slot->Resource R on RX And reserving periodic resources for other terminals. />Representing single-slot candidate resources R x,y According to period P' rsvp_TX The extended resource is C which is more than or equal to 0 and less than or equal to j resel -1。
Step 6 a), initial set of single slot candidate resources S A A single slot candidate resource R in (1) x,y (assumed to be in time slots) When the following three conditions are satisfied simultaneously, the single time slot candidate resource is selected from S A Excluding:
a) Terminal in time slot comprising CSI-IM resourceDecoding 1 of a PSCCH bearer st Stage SCI, 1 st The resource reservation period (Resource reservation period) field in the stage SCI exists and the value indicated by the resource reservation period field is P rsvp_RX (in ms) which is converted into a period in slots P' rsvp_RX (i.e., the first period). The PSCCH and the P of the PSCCH scheduleThe sub-channel resource occupied by SSCH on the frequency domain is R RX 。
b) And R in frequency domain RX Non-overlapping sub-channel resources R RX,1 The signal received power on the CSI-IM resource (i.e., the first CSI-IM resource) is greater than or equal to the first threshold.
c) Time slotsOn subchannel resource R RX,1 And->There is an overlap. Where q is the guaranteed time slotLocated in the selection window [ n+T ] 1 ,n+T 2 ]A positive integer within. J is more than or equal to 0 and less than or equal to C resel -1。
Step 7), if the initial single time slot candidate resource set S A The number of remaining single slot candidate resources in the network is less than X.M total Threshold Th (prio RX ,prio TX ) The RSRP threshold is raised by 3dB and returns to step 4) to continue the process. If S A The number of remaining single slot candidate resources in the list is greater than X.M total Will S A Reporting to the higher layer. X is a number greater than 0 and less than 1 of the higher layer configuration.
The descriptions of steps 1) to 6) and 7) may be referred to above, and will not be repeated here. That is, the mode 2 resource selection step provided herein adds step 6a as compared to the existing step.
The relationship between step 5) and step 6) may refer to the foregoing related description, and will not be described herein. For step 6) and step 6 a), the terminal may first perform step 6), and perform step 6 a) when the three conditions in step 6) are not satisfied at the same time; alternatively, the terminal may perform step 6 a) first, and perform step 6) when the three conditions in step 6 a) are not satisfied at the same time, and the execution sequence of step 6) and step 6 a) is not specifically limited in this application. Based on the above scheme, taking the time domain period of the periodically extended resource of the second resource as the first period, the power of the signal leakage carried by the third resource on the second resource is determined by the signal receiving power on the third resource and the in-band radiation template as an example, and the present application further provides a specific step of mode 2 resource selection, and the SL resource is assumed to trigger mode 2 resource selection in the time slot n, where the resource selection step is as follows:
step 1), determining a selection window.
Step 2), determining a perception window.
Step 3), obtain 1 st Priority p indicated in stage SCI i ＝prio RX And priority p of own terminal transmission TB configured by high layer j ＝prio TX And determining p i And p j Correlated RSRP threshold Th (p i ,p j )。
Step 4), determining an initial set of single-slot candidate resources S A 。
Step 5), initial set of single slot candidate resources S A A single slot candidate resource R in (1) x,y (assumed to be in time slots) When the following two conditions are satisfied simultaneously, the single time slot candidate resource is selected from S A Excluding:
a) Terminal in time slotNo channel listening is performed. Wherein (1)>To perceive time slots within the window.
b) Value P for any resource reservation interval allowed by the higher layer parameter sl-resource reservation period list rsvp Time slotAnd->There is an overlap. Wherein q is guaranteed time slot->Located in the selection window [ n+T ] 1 ,n+T 2 ]The positive integer in the reactor is more than or equal to 0 and less than or equal to j and less than or equal to C resel -1。
In this application, the subscript of a slot may indicate an index of the slot, for example,the subscript m in (a) indicates that the slot index is m, < >>The subscript in (a) indicates that the slot index is m+q×p rsvp 。
Step 6), initial set of single slot candidate resources S A A single slot candidate resource R in (1) x,y (assumed to be in time slots) When the following three conditions are satisfied simultaneously, the single time slot candidate resource is selected from S A Excluding:
a) Terminal in time slotDecoding 1 on a PSCCH bearer st Stage SCI, 1 st The resource reservation period (Resource reservation period) field in the stage SCI exists and the value indicated by the resource reservation period field is P rsvp_RX (in ms) which is converted into a period in slots P' rsvp_RX . In addition, the 1 st The Priority (Priority) field in the stage SCI indicates a Priority of prio RX . The PSCCH and PSSCH scheduled by the PSCCH occupy sub-channel resources of R in the frequency domain RX 。
b) The RSRP of the DMRS of the PSCCH, or of the pscsch scheduled by the PSCCH, is greater than the RSRP threshold Th (prio RX ,prio TX )。
c) Time slotsResource R on RX And->There is overlap, where q is the guaranteed time slotLocated in the selection window [ n+T ] 1 ,n+T 2 ]A positive integer within. Time slot->Resource R on RX And reserving periodic resources for other terminals. />Representing single-slot candidate resources R x,y According to period P' rsvp_TX The extended resource is C which is more than or equal to 0 and less than or equal to j resel -1。
Step 6 b), initial set of single slot candidate resources S A A single slot candidate resource R in (1) x,y (assumed to be in time slots) When the following three conditions are satisfied simultaneously, the single time slot candidate resource is selected from S A Excluding:
a) Terminal in time slotDecoding 1 of a PSCCH bearer st Stage SCI, 1 st The resource reservation period (Resource reservation period) field in the stage SCI exists and the value indicated by the resource reservation period field is P rsvp_RX (in ms) which is converted into a period in slots P' rsvp_RX (i.e., the first period). The PSCCH and PSSCH scheduled by the PSCCH occupy sub-channel resources of R in the frequency domain RX 。
b) Terminal determines the PSCCH and/or the PSignal received power of PSSCH for SCCH scheduling and determining R and R in frequency domain according to in-band radiation template RX Non-overlapping sub-channel resources R RX,1 And the interference power is greater than or equal to the first threshold.
c) Time slotsOn subchannel resource R RX,1 And->There is an overlap. Where q is the guaranteed time slotLocated in the selection window [ n+T ] 1 ,n+T 2 ]A positive integer within. J is more than or equal to 0 and less than or equal to C resel -1。
Step 7), if the initial single time slot candidate resource set S A The number of remaining single slot candidate resources in the network is less than X.M total Threshold Th (prio RX ,prio TX ) The RSRP threshold is raised by 3dB and returns to step 4) to continue the process. If S A The number of remaining single slot candidate resources in the list is greater than X.M total Will S A Reporting to the higher layer. X is a number greater than 0 and less than 1 of the higher layer configuration.
The descriptions of steps 1) to 6) and 7) may be referred to above, and will not be repeated here. That is, the mode 2 resource selection step provided herein adds step 6b as compared to the existing step.
The relationship between step 5) and step 6) may refer to the foregoing related description, and will not be described herein. For step 6) and step 6 b), the terminal may first perform step 6), and perform step 6 b) when the three conditions in step 6) are not satisfied at the same time; alternatively, the terminal may perform step 6 b) first, and perform step 6) when the three conditions in step 6 b) are not satisfied at the same time, and the execution sequence of step 6) and step 6 b) is not specifically limited in this application.
In addition to the resource selection method shown in fig. 6, another resource selection method is provided, as shown in fig. 11, and the method includes the following steps:
s1101, the first terminal determines a candidate resource set.
Alternatively, the candidate set of resources may include resources in the SL resource pool that are located within the selection window. Reference is made to the description of step 2) and step 4) above, and no further description is given here.
Wherein the candidate set of resources does not include a fourth resource. The signal received power on a fifth resource associated with the fourth resource is greater than or equal to the third threshold.
The fifth resource is a resource in the sensing window, and the fifth resource carries the PSCCH of the second terminal and/or the PSCCH scheduled by the PSCCH. The received power on the fifth resource is the received power of the PSCCH of the second terminal and/or the PSCCH scheduled by the PSCCH.
The periodic continuation resource of the fifth resource is overlapped with the time domain position of the resource set corresponding to the fourth resource. The interval between the frequency domain location of the fifth resource and the frequency domain location of the fourth resource is less than a fourth threshold.
Wherein the periodically-extended resource of the fifth resource is determined according to the fifth resource and the first period of the second terminal. For example, the frequency domain position of the periodically-extended resource of the fifth resource overlaps with the frequency domain position of the fifth resource, and the time domain period is the first period.
Optionally, the first period of the second terminal is a period in which the second terminal reserves resources. The PSCCH of the second terminal carried on the fifth resource may carry 1 st Stage SCI, 1 st The stage SCI may indicate the first period of the second terminal.
Optionally, the resource set corresponding to the fourth resource includes the fourth resource and/or a periodic continuation resource of the fourth resource, where the periodic continuation resource of the fourth resource is determined according to the fourth resource and the second period of the first terminal. For example, the frequency domain position of the periodically-extended resource of the fourth resource overlaps with the frequency domain position of the fourth resource, and the time domain period is the second period. The second period of the first terminal is a period of the first terminal reserving resources, which may be configured by higher layer parameters.
Optionally, the third threshold may be related to the first priority and the second priority. Wherein the first priority is 1 carried in PSCCH of the second terminal carried on the fifth resource st Priority indicated by stage SCI. The second priority is a priority of a TB to be transmitted by the first terminal, and the second priority may be configured by a higher layer.
Alternatively, the interval between the frequency domain position of the fifth resource and the frequency domain position of the fourth resource may be expressed in units of REs, or may be expressed in units of subchannels, which is not particularly limited in this application.
Alternatively, the first terminal may perform step S1102 described below after determining the candidate resource set.
S1102, using the resources in the candidate resource set to perform data transmission. Reference is made to the related description in the above step S602, and the description is omitted here.
It can be appreciated that in practical application, the first terminal may perform resource selection in combination with the method shown in fig. 11 and the existing mode 2 resource selection method.
Based on the scheme provided by the application, when the terminal determines the candidate resource set, if the received power on the fifth resource in the sensing window is larger, and the periodic continuation resource of the fifth resource is overlapped with the time domain position of the resource set corresponding to the fourth resource, the candidate resource set does not comprise the fourth resource with smaller frequency domain interval with the fifth resource, so that the interference on the resource for data transmission finally determined by the terminal is smaller or no interference exists, and the reliability of data transmission is improved.
The received signal power in the present application may be represented by various forms, such as RSRP, received signal strength indicator (received signal strength indication, RSSI), and the like, and is not limited thereto.
It will be appreciated that in the various embodiments above, the methods and/or steps implemented by a network device may also be implemented by a component (e.g., a processor, chip, system on chip, circuit, logic module, or software such as a chip or circuit) that may be used in the network device; the methods and/or steps performed by the terminal may also be implemented with components (e.g., a processor, a chip, a system-on-a-chip, a circuit, a logic module, or software such as a chip or a circuit) that may be used in the terminal.
The foregoing has mainly described the solutions provided in this application. Correspondingly, the application also provides a communication device which is used for realizing the various methods. The communication device may be the first terminal in the above method embodiment, or a device comprising the first terminal, or a component, such as a chip or a chip system, that may be used for the first terminal.
It will be appreciated that the communication device, in order to achieve the above-described functions, comprises corresponding hardware structures and/or software modules performing the respective functions. Those of skill in the art will readily appreciate that the elements and algorithm steps of the examples described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
The embodiment of the application may divide the functional modules of the communication device according to the embodiment of the method, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated modules may be implemented in hardware or in software functional modules. It should be noted that, in the embodiment of the present application, the division of the modules is schematic, which is merely a logic function division, and other division manners may be implemented in actual implementation.
Alternatively, taking the communication device as the first terminal in the above method embodiment as an example, fig. 12 shows a schematic structural diagram of the first terminal 120. The first terminal 120 comprises a processing module 1201. Optionally, the first terminal may further include a transceiver module 1202.
In some embodiments, the first terminal 120 may also include a memory module (not shown in fig. 12) for storing program instructions and data.
In some embodiments, the transceiver module 1202, which may also be referred to as a transceiver unit, is configured to perform transmit and/or receive functions. The transceiver module 1202 may be formed of a transceiver circuit, transceiver, or communication interface.
In some embodiments, the transceiver module 1202 may include a receiving module and a transmitting module, for performing the steps of receiving and transmitting classes performed by the first terminal in the above-described method embodiments, respectively, and/or for supporting other processes of the techniques described herein; the processing module 1201 may be configured to perform the steps of the processing classes (e.g., determining, excluding, etc.) performed by the first terminal in the method embodiments described above, and/or to support other processes of the techniques described herein.
Wherein the processing module 1201 is configured to determine a candidate set of resources, where the candidate set of resources does not include the first resource, and wherein an interference power on a second resource associated with the first resource is greater than or equal to a first threshold. Wherein, the periodical extension resource of the second resource and the resource set corresponding to the first resource are overlapped; the periodically-extending resource of the second resource is determined based on the second resource and the first period of the second terminal. The time domain position of the second resource overlaps with the time domain position of the third resource, and the frequency domain position of the second resource does not overlap with the frequency domain position of the third resource. The interference power on the second resource is determined based on the power on the second resource of the signal carried by the third resource. The third resource is a resource in the sensing window, and the signal carried by the third resource is a PSCCH of the second terminal and/or a PSCCH scheduled by the PSCCH.
Optionally, the resource set corresponding to the first resource includes the first resource and/or a periodically extended resource of the first resource, where the periodically extended resource of the first resource is determined according to the first resource and the second period of the first terminal.
Optionally, the interference power on the second resource is determined according to the power of the signal carried by the third resource leaked on the second resource, including: the interference power on the second resource is determined based on the power of the signal carried by the third resource leaked on the second resource, and the signal received power of the PSCCH and/or PSCCH scheduled PSCCH of the third terminal carried on the second resource.
Optionally, the periodically-extended resource of the second resource is determined according to the second resource and the first period of the second terminal, including: the periodically-extending resource of the second resource is determined according to the second resource, the first period of the second terminal, and the third period of the third terminal, where the second resource is used to carry the PSCCH of the third terminal and/or the pscsch scheduled by the PSCCH.
Optionally, the power of the signal leaked on the second resource carried by the third resource is the signal receiving power on the first channel state information interference measurement CSI-IM resource, where the first CSI-IM resource is located on the second resource.
Optionally, the transceiver module 1202 is configured to receive first configuration information from the third terminal, where the first configuration information is used to configure the first CSI-IM resource on the second resource; or, the transceiver module 1202 is configured to receive second configuration information from the network device, where the second configuration information is used to configure a periodic CSI-IM resource, the period of the periodic CSI-IM resource is N time slots, the periodic CSI-IM resource includes the first CSI-IM resource, and N is a positive integer.
Alternatively, the CSI-IM resources are located on symbols other than guard symbols, and the CSI-IM resources are not used for PSSCH and PSCCH transmissions.
Optionally, the power of the signal leakage carried by the third resource on the second resource is determined according to the signal receiving power on the third resource and the in-band radiation template, and the signal receiving power on the third resource is determined by the signal receiving power of the PSCCH of the second terminal and/or the signal receiving power of the PSCCH scheduled by the PSCCH.
Optionally, the signal received power on the third resource is the signal received power of the PSCCH of the second terminal; or, the signal receiving power on the third resource is the signal receiving power of the PSSCH scheduled by the PSCCH; or the signal receiving power on the third resource is the maximum value of the signal receiving power of the PSCCH of the second terminal and the signal receiving power of the PSSCH scheduled by the PSCCH; or the signal receiving power on the third resource is the minimum value of the signal receiving power of the PSCCH of the second terminal and the signal receiving power of the PSSCH scheduled by the PSCCH; alternatively, the signal received power on the third resource is an average of the signal received power of the PSCCH of the second terminal and the signal received power of the PSCCH scheduled PSCCH.
Optionally, the transceiver module 1202 is further configured to receive indication information from the fourth terminal, where the indication information is used to indicate interference power on the second resource.
Optionally, the transceiver module 1202 is further configured to use resources in the candidate resource set for data transmission.
Optionally, the second terminal and the first terminal share the same side uplink resource pool, and/or a distance between the second terminal and the first terminal is less than or equal to a second threshold.
All relevant contents of each step related to the above method embodiment may be cited to the functional description of the corresponding functional module, which is not described herein.
In this application, the first terminal 120 is presented in a form of dividing each functional module in an integrated manner. "module" herein may refer to an application-specific integrated circuit (ASIC), a circuit, a processor and memory that execute one or more software or firmware programs, an integrated logic circuit, and/or other devices that can provide the described functionality.
In some embodiments, the first terminal 120 may take the form of the communication device 50 shown in fig. 5 as will occur to those of skill in the art in a hardware implementation.
As an example, the functions/implementation of the processing module 1201 in fig. 12 may be implemented by the processor 501 in the communication apparatus 50 shown in fig. 5 invoking computer executable instructions stored in the memory 503. The functionality/implementation of the transceiver module 1202 in fig. 12 may be implemented by the communication interface 504 in the communication device 50 shown in fig. 5.
In some embodiments, when the first terminal 120 in fig. 12 is a chip or a chip system, the functions/implementation of the transceiver module 1202 may be implemented through an input/output interface (or a communication interface) of the chip or the chip system, and the functions/implementation of the processing module 1201 may be implemented through a processor (or a processing circuit) of the chip or the chip system.
Since the first terminal 120 provided in this embodiment can perform the above method, the technical effects obtained by the method can be referred to the above method embodiment, and will not be described herein.
Alternatively, taking the communication device as an example of the fourth terminal in the above method embodiment, fig. 13 shows a schematic structural diagram of the fourth terminal 130. The fourth terminal 130 includes a processing module 1301. Optionally, the fourth terminal may further include a transceiver module 1302.
In some embodiments, the fourth terminal 130 may also include a memory module (not shown in fig. 13) for storing program instructions and data.
In some embodiments, the transceiver module 1302, which may also be referred to as a transceiver unit, is configured to implement transmit and/or receive functions. The transceiver module 1302 may be formed of a transceiver circuit, transceiver, or communication interface.
In some embodiments, the transceiver module 1302 may include a receiving module and a transmitting module, for performing the steps of receiving and transmitting the class performed by the fourth terminal in the above-described method embodiments, respectively, and/or for supporting other processes of the techniques described herein; processing module 1301 may be configured to perform the steps of the processing class (e.g., determining, excluding, etc.) performed by the fourth terminal in the method embodiment described above, and/or to support other processes of the techniques described herein.
Wherein, the processing module 1301 is configured to determine an interference power on the second resource; the transceiver module 1302 is configured to send indication information to the first terminal, where the indication information is used to indicate interference power on the second resource. The time domain position of the second resource overlaps with the time domain position of the third resource, and the frequency domain position of the second resource does not overlap with the frequency domain position of the third resource. The third resource is a resource in the sensing window, the interference power on the second resource is determined according to the power leaked on the second resource by the signal carried by the third resource, and the signal carried by the third resource is a PSCCH and/or PSSCH scheduled by the PSCCH of the second terminal.
Optionally, the interference power on the second resource is determined according to the power of the signal carried by the third resource leaked on the second resource, including: the interference power on the second resource is determined based on the power of the signal carried by the third resource leaked on the second resource, and the signal received power of the PSCCH and/or PSCCH scheduled PSCCH of the third terminal carried on the second resource.
Optionally, the power of the signal leaked on the second resource carried by the third resource is the signal receiving power on the first channel state information interference measurement CSI-IM resource, where the first CSI-IM resource is located on the second resource.
Optionally, the transceiver module 1302 is further configured to receive first configuration information from the third terminal, where the first configuration information is used to configure the first CSI-IM resource on the second resource; or, the transceiver module 1302 is further configured to receive second configuration information from the network device, where the second configuration information is used to configure a periodic CSI-IM resource, the period of the periodic CSI-IM resource is N time slots, the periodic CSI-IM resource includes the first CSI-IM resource, and N is a positive integer.
Alternatively, the CSI-IM resources are located on symbols other than guard symbols, and the CSI-IM resources are not used for PSSCH and PSCCH transmissions.
Optionally, the power of the signal leakage carried by the third resource on the second resource is determined according to the signal receiving power on the third resource and the in-band radiation template, and the signal receiving power on the third resource is determined by the signal receiving power of the PSCCH of the second terminal and/or the signal receiving power of the PSCCH scheduled by the PSCCH.
Optionally, the signal received power on the third resource is the signal received power of the PSCCH of the second terminal; or, the signal receiving power on the third resource is the signal receiving power of the PSSCH scheduled by the PSCCH; or the signal receiving power on the third resource is the maximum value of the signal receiving power of the PSCCH of the second terminal and the signal receiving power of the PSSCH scheduled by the PSCCH; or the signal receiving power on the third resource is the minimum value of the signal receiving power of the PSCCH of the second terminal and the signal receiving power of the PSSCH scheduled by the PSCCH; alternatively, the signal received power on the third resource is an average of the signal received power of the PSCCH of the second terminal and the signal received power of the PSCCH scheduled PSCCH.
All relevant contents of each step related to the above method embodiment may be cited to the functional description of the corresponding functional module, which is not described herein.
In this application, the fourth terminal 130 is presented in a form of dividing each functional module in an integrated manner. "module" herein may refer to an application-specific integrated circuit (ASIC), a circuit, a processor and memory that execute one or more software or firmware programs, an integrated logic circuit, and/or other devices that can provide the described functionality.
In some embodiments, the fourth terminal 130 may take the form of the communication device 50 shown in fig. 5, as will occur to those of skill in the art in a hardware implementation.
As an example, the functions/implementation of processing module 1301 in fig. 13 may be implemented by processor 501 in communication apparatus 50 shown in fig. 5 invoking computer-executed instructions stored in memory 503. The functions/implementations of the transceiver module 1302 in fig. 13 may be implemented by the communication interface 504 in the communication device 50 shown in fig. 5.
In some embodiments, when the fourth terminal 130 in fig. 13 is a chip or a chip system, the functions/implementation of the transceiver module 1302 may be implemented through an input/output interface (or a communication interface) of the chip or the chip system, and the functions/implementation of the processing module 1301 may be implemented through a processor (or a processing circuit) of the chip or the chip system.
Since the fourth terminal 130 provided in this embodiment can perform the above method, the technical effects obtained by the fourth terminal can be referred to the above method embodiment, and will not be described herein.
As a possible product form, the first terminal or the fourth terminal described in the embodiments of the present application may be further implemented using the following: one or more field programmable gate arrays (field programmable gate array, FPGA), programmable logic devices (programmable logic device, PLD), controllers, state machines, gate logic, discrete hardware components, any other suitable circuit or combination of circuits capable of performing the various functions described throughout this application.
As another possible product form, the first terminal or the fourth terminal according to the embodiments of the present application may be implemented by a general bus architecture. For ease of illustration, referring to fig. 14, fig. 14 is a schematic structural diagram of a communication device 1400 provided in an embodiment of the present application, the communication device 1400 including a processor 1401 and a transceiver 1402. The communication apparatus 1400 may be a first terminal device, or a chip therein. Fig. 14 shows only the main components of the communication device 1400. The communication device may further comprise a memory 1403, and input and output devices (not shown) in addition to the processor 1401 and transceiver 1402.
The processor 1401 is mainly used for processing communication protocols and communication data, controlling the whole communication device, executing software programs, and processing data of the software programs. The memory 1403 is mainly used for storing software programs and data. The transceiver 1402 may include a radio frequency circuit and an antenna, the radio frequency circuit being used mainly for conversion of baseband signals and radio frequency signals and processing of radio frequency signals. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are mainly used for receiving data input by a user and outputting data to the user.
The processor 1401, transceiver 1402, and memory 1403 may be connected by a communication bus.
When the communication device is powered on, the processor 1401 can read the software program in the memory 1403, interpret and execute instructions of the software program, and process data of the software program. When data needs to be transmitted wirelessly, the processor 1401 performs baseband processing on the data to be transmitted, and outputs a baseband signal to the radio frequency circuit, and the radio frequency circuit performs radio frequency processing on the baseband signal and then transmits the radio frequency signal outwards in the form of electromagnetic waves through the antenna. When data is transmitted to the communication device, the radio frequency circuit receives a radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor 1401, and the processor 1401 converts the baseband signal into data and processes the data.
In another implementation, the radio frequency circuitry and antenna may be provided separately from the processor performing the baseband processing, e.g., in a distributed scenario, the radio frequency circuitry and antenna may be in a remote arrangement from the communication device.
In some embodiments, the embodiments of the present application further provide a communication device, where the communication device includes a processor, for implementing the method in any of the method embodiments described above.
As a possible implementation, the communication device further comprises a memory. The memory is used for storing necessary computer programs and data. The computer program may comprise instructions which the processor may invoke the instructions in the computer program stored in the memory to instruct the communication device to perform the method in any of the method embodiments described above. Of course, the memory may not be in the communication device.
As another possible implementation, the communication apparatus further includes an interface circuit, which is a code/data read/write interface circuit, for receiving computer-executable instructions (the computer-executable instructions are stored in a memory, may be read directly from the memory, or may be transmitted to the processor via other devices).
As a further possible implementation, the communication device further comprises a communication interface for communicating with a module outside the communication device.
It will be appreciated that the communication device may be a chip or a chip system, and when the communication device is a chip system, the communication device may be formed by a chip, or may include a chip and other discrete devices, which are not specifically limited in this embodiment of the present application.
The present application also provides a computer readable storage medium having stored thereon a computer program or instructions which when executed by a computer, performs the functions of any of the method embodiments described above.
The present application also provides a computer program product which, when executed by a computer, implements the functions of any of the method embodiments described above.
Those skilled in the art will understand that, for convenience and brevity, the specific working process of the system, apparatus and unit described above may refer to the corresponding process in the foregoing method embodiment, which is not described herein again.
It will be appreciated that the systems, apparatus, and methods described herein may be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The units described as separate components may or may not be physically separate, i.e. may be located in one place, or may be distributed over a plurality of network elements. The components shown as units may or may not be physical units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.
In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using a software program, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device including one or more servers, data centers, etc. that can be integrated with the medium. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a Solid State Disk (SSD)), or the like. In an embodiment of the present application, the computer may include the apparatus described above.
Although the present application has been described herein in connection with various embodiments, other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed application, from a review of the figures, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the "a" or "an" does not exclude a plurality. A single processor or other unit may fulfill the functions of several items recited in the claims. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.
Although the present application has been described in connection with specific features and embodiments thereof, it will be apparent that various modifications and combinations can be made without departing from the spirit and scope of the application. Accordingly, the specification and drawings are merely exemplary illustrations of the present application as defined in the appended claims and are considered to cover any and all modifications, variations, combinations, or equivalents that fall within the scope of the present application. It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.

Claims (37)

1. A method for selecting resources, wherein the method is applied to a first terminal, the method comprising:
determining a candidate resource set, the candidate resource set not including a first resource, wherein interference power on a second resource associated with the first resource is greater than or equal to a first threshold;
wherein, the periodical extension resource of the second resource and the resource set corresponding to the first resource are overlapped; the periodic continuation resource of the second resource is determined according to the second resource and the first period of the second terminal; the time domain position of the second resource overlaps with the time domain position of the third resource, and the frequency domain position of the second resource does not overlap with the frequency domain position of the third resource; the interference power on the second resource is determined according to the power of the signal carried by the third resource leaked on the second resource; the third resource is a resource in a sensing window, and the signal carried by the third resource is a physical side uplink control channel PSCCH of the second terminal and/or a physical side uplink shared channel PSSCH scheduled by the PSCCH.
2. The method according to claim 1, wherein the set of resources corresponding to the first resource comprises a first resource and/or a periodically-extended resource of the first resource, the periodically-extended resource of the first resource being determined according to the first resource and a second period of the first terminal.
3. The method according to claim 1 or 2, wherein the interference power on the second resource is determined from the power on the second resource of signal leakage carried by the third resource, comprising:
the interference power on the second resource is determined according to the power leaked on the second resource by the signal carried by the third resource and the signal receiving power of the PSCCH and/or the PSCCH scheduled by the PSCCH of the third terminal carried on the second resource.
4. A method according to any of claims 1-3, characterized in that the periodically-extending resources of the second resources are determined from the first periodicity of the second resources and the second terminal, comprising:
the periodic continuation resource of the second resource is determined according to the second resource, the first period of the second terminal and the third period of the third terminal, and the second resource is used for bearing the PSCCH of the third terminal and/or the PSSCH scheduled by the PSCCH.
5. The method of any of claims 1-4, wherein the power of the signal carried by the third resource that leaks on the second resource is a signal received power on a first channel state information interference measurement, CSI-IM, resource, wherein the first CSI-IM resource is located on the second resource.
6. The method of claim 5, wherein the method further comprises:
receiving first configuration information from a third terminal, wherein the first configuration information is used for configuring the first CSI-IM resource on the second resource; or alternatively, the process may be performed,
and receiving second configuration information from network equipment, wherein the second configuration information is used for configuring periodical CSI-IM resources, the period of the periodical CSI-IM resources is N time slots, the periodical CSI-IM resources comprise the first CSI-IM resources, and N is a positive integer.
7. The method of claim 5 or 6, wherein the CSI-IM resources are located on symbols other than guard symbols, the CSI-IM resources not being used for PSSCH and PSCCH transmissions.
8. The method according to any of claims 1-4, wherein the power of the signal carried by the third resource leaked on the second resource is determined according to the signal received power on the third resource and an in-band radiation pattern, the signal received power on the third resource being determined by the signal received power of the PSCCH of the second terminal and/or the signal received power of the PSCCH scheduled by the PSCCH.
9. The method of claim 8, wherein the signal received power on the third resource is the signal received power of a PSCCH of the second terminal;
Or the signal receiving power on the third resource is the signal receiving power of the PSSCH scheduled by the PSCCH;
or the signal receiving power on the third resource is the maximum value of the signal receiving power of the PSCCH of the second terminal and the signal receiving power of the pscsch scheduled by the PSCCH;
or the signal receiving power on the third resource is the minimum value of the signal receiving power of the PSCCH of the second terminal and the signal receiving power of the pscsch scheduled by the PSCCH;
or, the signal received power on the third resource is an average value of the signal received power of the PSCCH of the second terminal and the signal received power of the pscsch scheduled by the PSCCH.
10. The method according to any one of claims 1-9, wherein the method further comprises:
and receiving indication information from a fourth terminal, wherein the indication information is used for indicating the interference power on the second resource.
11. The method according to any of claims 1-10, wherein the second terminal and the first terminal share the same side uplink resource pool and/or wherein a distance between the second terminal and the first terminal is less than or equal to a second threshold.
12. A communication method, wherein the method is applied to a fourth terminal, the method comprising:
determining an interference power on the second resource;
transmitting indication information to a first terminal, wherein the indication information is used for indicating interference power on the second resource;
wherein the time domain position of the second resource overlaps with the time domain position of the third resource, and the frequency domain position of the second resource does not overlap with the frequency domain position of the third resource; the third resource is a resource in the sensing window; the interference power on the second resource is determined according to the power leaked on the second resource of the signal borne by the third resource, wherein the signal borne by the third resource is a physical side uplink control channel PSCCH and/or a physical side uplink shared channel PSSCH scheduled by the PSCCH of the second terminal.
13. The method of claim 12, wherein the interference power on the second resource is determined based on the power on the second resource of signal leakage carried by the third resource, comprising:
the interference power on the second resource is determined according to the power leaked on the second resource by the signal carried by the third resource and the signal receiving power of the PSCCH and/or the PSCCH scheduled by the PSCCH of the third terminal carried on the second resource.
14. The method of claim 12 or 13, wherein the power of the signal carried by the third resource on the second resource is a signal received power on a first channel state information interference measurement, CSI-IM, resource, wherein the first CSI-IM resource is located on the second resource.
15. The method of claim 14, wherein the method further comprises:
receiving first configuration information from a third terminal, wherein the first configuration information is used for configuring the first CSI-IM resource on the second resource; or alternatively, the process may be performed,
and receiving second configuration information from network equipment, wherein the second configuration information is used for configuring periodical CSI-IM resources, the period of the periodical CSI-IM resources is N time slots, the periodical CSI-IM resources comprise the first CSI-IM resources, and N is a positive integer.
16. The method according to claim 14 or 15, wherein the CSI-IM resources are located on symbols other than guard symbols, the CSI-IM resources not being used for PSSCH and PSCCH transmissions.
17. The method according to claim 12 or 13, characterized in that the power of the signal leakage carried by the third resource on the second resource is determined from the signal received power on the third resource, which is determined by the signal received power of the PSCCH of the second terminal and/or the signal received power of the PSCCH scheduled by the PSCCH, and an in-band radiation template.
18. A first terminal, the first terminal comprising: a processing module;
the processing module is configured to determine a candidate set of resources, where the candidate set of resources does not include a first resource, and wherein interference power on a second resource associated with the first resource is greater than or equal to a first threshold;
wherein, the periodical extension resource of the second resource and the resource set corresponding to the first resource are overlapped; the periodic continuation resource of the second resource is determined according to the second resource and the first period of the second terminal; the time domain position of the second resource overlaps with the time domain position of the third resource, and the frequency domain position of the second resource does not overlap with the frequency domain position of the third resource; the interference power on the second resource is determined according to the power of the signal carried by the third resource leaked on the second resource; the third resource is a resource in a sensing window, and the signal carried by the third resource is a physical side uplink control channel PSCCH of the second terminal and/or a physical side uplink shared channel PSSCH scheduled by the PSCCH.
19. The first terminal of claim 18, wherein the set of resources corresponding to the first resource includes a first resource and/or a periodically-extended resource of the first resource, the periodically-extended resource of the first resource being determined according to the first resource and a second period of the first terminal.
20. The first terminal according to claim 18 or 19, wherein the interference power on the second resource is determined according to the power leaked on the second resource by the signal carried by the third resource, comprising:
the interference power on the second resource is determined according to the power leaked on the second resource by the signal carried by the third resource and the signal receiving power of the PSCCH and/or the PSCCH scheduled by the PSCCH of the third terminal carried on the second resource.
21. The first terminal according to any of the claims 18-20, wherein the periodically-extending resource of the second resource is determined according to the second resource and the first periodicity of the second terminal, comprising:
the periodic continuation resource of the second resource is determined according to the second resource, the first period of the second terminal and the third period of the third terminal, and the second resource is used for bearing the PSCCH of the third terminal and/or the PSSCH scheduled by the PSCCH.
22. The first terminal according to any of claims 18-21, wherein the power of the signal carried by the third resource leaked on the second resource is a signal received power on a first channel state information interference measurement, CSI-IM, resource, wherein the first CSI-IM resource is located on the second resource.
23. The first terminal of claim 22, wherein the first terminal further comprises: a transceiver module;
the transceiver module is configured to receive first configuration information from a third terminal, where the first configuration information is used to configure the first CSI-IM resource on the second resource; or alternatively, the process may be performed,
the transceiver module is configured to receive second configuration information from a network device, where the second configuration information is used to configure a periodic CSI-IM resource, the period of the periodic CSI-IM resource is N time slots, the periodic CSI-IM resource includes the first CSI-IM resource, and N is a positive integer.
24. The first terminal according to claim 22 or 23, characterized in that the CSI-IM resources are located on symbols other than guard symbols, which are not used for PSSCH and PSCCH transmissions.
25. The first terminal according to any of the claims 18-21, characterized in that the power of the signal leakage carried by the third resource on the second resource is determined based on the signal received power on the third resource, which is determined by the signal received power of the PSCCH of the second terminal and/or the signal received power of the PSCCH scheduled by the PSCCH, and on an in-band radiation pattern.
26. The first terminal of claim 25, wherein the signal received power on the third resource is the signal received power of a PSCCH of the second terminal;
or the signal receiving power on the third resource is the signal receiving power of the PSSCH scheduled by the PSCCH;
or the signal receiving power on the third resource is the maximum value of the signal receiving power of the PSCCH of the second terminal and the signal receiving power of the pscsch scheduled by the PSCCH;
or the signal receiving power on the third resource is the minimum value of the signal receiving power of the PSCCH of the second terminal and the signal receiving power of the pscsch scheduled by the PSCCH;
or, the signal received power on the third resource is an average value of the signal received power of the PSCCH of the second terminal and the signal received power of the pscsch scheduled by the PSCCH.
27. The first terminal according to any of the claims 18-26, characterized in that the first terminal further comprises: a transceiver module;
the transceiver module is configured to receive indication information from a fourth terminal, where the indication information is used to indicate interference power on the second resource.
28. The first terminal according to any of claims 18-27, wherein the second terminal and the first terminal share the same side-link resource pool and/or wherein a distance between the second terminal and the first terminal is less than or equal to a second threshold.
29. A fourth terminal, the fourth terminal comprising: a processing module and a receiving-transmitting module;
the processing module is used for determining interference power on the second resource;
the transceiver module is configured to send indication information to a first terminal, where the indication information is used to indicate interference power on the second resource;
wherein the time domain position of the second resource overlaps with the time domain position of the third resource, and the frequency domain position of the second resource does not overlap with the frequency domain position of the third resource; the third resource is a resource in the sensing window; the interference power on the second resource is determined according to the power leaked on the second resource of the signal borne by the third resource, wherein the signal borne by the third resource is a physical side uplink control channel PSCCH and/or a physical side uplink shared channel PSSCH scheduled by the PSCCH of the second terminal.
30. The fourth terminal of claim 29, wherein the interference power on the second resource is determined based on the power on the second resource of signal leakage carried by the third resource, comprising:
the interference power on the second resource is determined according to the power leaked on the second resource by the signal carried by the third resource and the signal receiving power of the PSCCH and/or the PSCCH scheduled by the PSCCH of the third terminal carried on the second resource.
31. The fourth terminal of claim 29 or 30, wherein the power of the signal carried by the third resource leaked on the second resource is a signal received power on a first channel state information interference measurement, CSI-IM, resource, wherein the first CSI-IM resource is located on the second resource.
32. The fourth terminal of claim 31 wherein the fourth terminal is configured to,
the transceiver module is further configured to receive first configuration information from a third terminal, where the first configuration information is used to configure the first CSI-IM resource on the second resource; or alternatively, the process may be performed,
the transceiver module is further configured to receive second configuration information from a network device, where the second configuration information is used to configure a periodic CSI-IM resource, the period of the periodic CSI-IM resource is N time slots, the periodic CSI-IM resource includes the first CSI-IM resource, and N is a positive integer.
33. The fourth terminal according to claim 31 or 32, wherein the CSI-IM resources are located on symbols other than guard symbols, the CSI-IM resources not being used for PSSCH and PSCCH transmissions.
34. The fourth terminal according to claim 29 or 30, wherein the power on the second resource of the signal leakage carried by the third resource is determined based on the signal received power on the third resource, which is determined by the signal received power of the PSCCH of the second terminal and/or the signal received power of the PSCCH scheduled by the PSCCH, and on an in-band radiation pattern.
35. A communication device, the communication device comprising: a processor;
the processor being configured to execute a computer program or instructions to cause the communication device to perform the method of any of claims 1-11 or to cause the communication device to perform the method of any of claims 12-17.
36. A computer readable storage medium, characterized in that the computer readable storage medium has stored therein a computer program or instructions which, when executed by a communication device, is adapted to carry out the method according to any one of claims 1-11 or to carry out the method according to any one of claims 12-17.
37. A computer program product, characterized in that the method according to any of claims 1-11 is implemented or the method according to any of claims 12-17 is implemented when the computer program product is run on a communication device.
CN202210159063.6A 2022-01-04 2022-02-21 Resource selection method and device Pending CN116456498A (en)

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PCT/CN2022/139693 WO2023130939A1 (en) 2022-01-04 2022-12-16 Resource selection method and apparatus

Applications Claiming Priority (2)

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CN2022100010474 2022-01-04
CN202210001047 2022-01-04

Publications (1)

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