CN114223285A

CN114223285A - Communication method and device

Info

Publication number: CN114223285A
Application number: CN201980099253.XA
Authority: CN
Inventors: 黎超; 张兴炜
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-08-16
Filing date: 2019-08-16
Publication date: 2022-03-22
Also published as: WO2021031043A1

Abstract

The application provides a communication method and a device, and the method comprises the following steps: the method comprises the steps that a first device determines a first resource set according to first control information and/or first data detected in a listening window, wherein the first resource set is a resource needing to be excluded from a selection window, and the first control information is used for indicating the type of the first data; the first device determining transmission resources from a set of candidate resources, the set of candidate resources including resources of the selection window other than the first set of resources; the first device transmits second data on the transmission resource. By the method, potential interference and resource conflict when a plurality of terminal devices transmit data can be reduced.

Description

Communication method and device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a communication method and apparatus.

Background

The internet of vehicles has recently received increasing attention as a key technology of future Intelligent Transportation Systems (ITS). The system of vehicle and any device (V2X) is a key technology in the car networking. V2X, which includes vehicle-to-vehicle (V2V), vehicle-to-infrastructure (V2I), vehicle-to-pedestrian (V2P) direct communication, and vehicle-to-network (V2N) communication interaction. Except for V2N vehicle and network communications using uplink and downlink, the remaining V2V/V2I/V2P data communications use Sidelink (SL) for communications.

In the V2X technology, a terminal device is supported to autonomously select a transmission mode of a resource in the absence of a network. The transmission mode of the autonomous selection resource refers to that the terminal device autonomously selects a resource in resources, such as transmission resources, allocated to the terminal device by the network device for transmitting data. When selecting the resource, the terminal device listens (sending) the sending resource and obtains the sending result. sending refers to selecting currently unoccupied sending resources in a sending resource pool for transmission by listening to the occupation conditions of different time-frequency resources in the sending resources within a period of time. For example, the terminal device may exclude from the candidate resources undetected resources and occupied detected resources, while for undetected resources, it may further exclude that occupied but for data that is not transmitted periodically, previously occupied resources on the candidate resources are not necessarily linked to the position where they appear subsequently on the candidate resources, so for data that is transmitted non-periodically, the transmission resources selected by the plurality of terminal devices may be the same, with collision occurring.

Disclosure of Invention

The application provides a communication method and device, and provides a mode for flexibly eliminating unavailable resources, so that potential interference and resource conflict when a plurality of terminal devices send data are reduced.

In a first aspect, a communication method is provided, and the method includes: the method comprises the steps that a first device determines a first resource set according to first control information and/or first data detected in a listening window, wherein the first resource set is a resource needing to be excluded from a selection window, and the first control information is used for indicating the type of the first data; thereafter, the first device determines transmission resources from a candidate set of resources, the candidate set of resources including resources of the selection window other than the first set of resources; the first device then transmits second data on the transmission resources.

The method may be performed by a first device, which may be a communication device or a communication apparatus capable of supporting the communication device to implement the functions required by the method, such as a chip system or a communication module in a communication device. Illustratively, the communication device may be a terminal device or a network device. Likewise, the second device may be a communication device or a communication means capable of supporting the communication device to perform the functions required by the method, such as a system-on-chip or a communication module in the communication device. Illustratively, the communication device may be a terminal device or a network device.

In this embodiment of the application, the first resource set to be excluded may be determined from the selection window according to the type of the first data, and even if the first data is non-periodic data, the resource that may be occupied by the first data in the selection window in the future may be determined as possible, so as to exclude the resource, so as to avoid that when multiple terminal devices autonomously select the resource, the same resource is selected and a conflict is generated.

In one possible design, the selection window is temporally located after the listening window.

In one possible design, the first device determines the first set of resources according to the first control information and/or the first data detected in the listening window, including:

the first device determines that the first resource set includes a first reserved resource and/or a second reserved resource, where the first reserved resource is a reserved resource indicated by the first control information, the signal quality of the first control information is greater than a first threshold, the second reserved resource is a resource reserved for the second data, and the signal quality of the second data is greater than a second threshold.

The signal quality is larger, and it can be considered that the resource reserved for a certain data is closer to the end position of the listening window. If the signal quality is low, it can be considered that the resource reserved for a certain data is farther than the end position of the listening window. Therefore, in the embodiment of the present application, it may be determined that, when the signal quality of the first control information is greater than the first threshold, the reserved resource indicated by the first control information is excluded from the selection window, and the determined first resource set is more accurate.

In one possible design, the first device determines transmission resources from a set of candidate resources, comprising:

the first device determines the transmission period from the candidate resource set according to the type of the first data and/or the type of the second data; wherein the type comprises a first type or a second type;

the first type is used for indicating that the data is periodically transmitted data, and the second type is used for indicating that the data is non-periodically transmitted data; alternatively, the first and second electrodes may be,

the first type is used for indicating that data to be sent are still time-sequentially sent after the data are sent, and the second type is used for indicating that the data to be sent are not time-sequentially sent after the data are sent; alternatively, the first and second electrodes may be,

the first type is used for indicating that the control information corresponding to the data indicates reservation, and the second type is used for indicating that the control information corresponding to the data does not indicate reservation; alternatively, the first and second electrodes may be,

the first type is used for indicating that the control information corresponding to the data indicates reservation for other data, and the second type is used for indicating that the control information corresponding to the data does not indicate reservation or indicates reservation among different retransmissions of the same data; alternatively, the first and second electrodes may be,

the first type and the second type are both used to indicate a priority of data, and the priority of the first data of the first type is lower than the priority of the first data of the second type.

In the embodiment of the application, the definition of various periodic services and non-periodic services is provided, and the application is wider.

In one possible design, the method further includes:

the first device determines the time length of the listening window and/or the time length of the selection window according to the type of the first data.

In the embodiment of the present application, the time length of the selection window is determined according to the type of the first data, so that a more reasonable selection window can be matched for different services, for example, when the selection window is smaller, data is sent out in a short time, and it is not necessary to confirm the available resources after the time domain is longer. The delays may be different for different terminal devices, so that an appropriate resource may be selected for transmitting data. The larger the relative selection window, the more resources are available for transmitting data. The larger the delay, the larger the selection window may be used to select the best resource from among the multiple available resources to reduce collisions. The priority is high and the selection window is large, so that a larger selection window can be used to select the best resource from the multiple available resources to reduce the conflict.

In one possible design of the system, the system may be,

the type of the second data is the first type, the length of the listening window of the second data is a first time length, the type of the second data is the second type, the length of the listening window of the second data is a second time length, and the first time length is greater than the second time length; and/or the presence of a gas in the gas,

the type of the second data is the first type, the length of the selection window of the second data is a first time length, the type of the second data is the second type, the length of the selection window of the second data is a second time length, and the first time length is greater than the second time length; and/or the presence of a gas in the gas,

the time length and/or the time domain position of the listening window of the second data are configured according to signaling; and/or the presence of a gas in the gas,

the time length and/or the time domain position of the selection window of the second data are configured according to signaling.

In one possible design, the reserved resources indicated by the first control information are located in the selection window, and the first resource set includes the reserved resources and/or resources occupied by the first data.

In one possible design, the initial transmission of the first data is in the listening window, and the reserved resources are used for the retransmission of the first data; or the initial transmission and the retransmission of the first data are in the listening window, and the reserved resources are used for the initial transmission and/or the retransmission of the third data.

In the embodiment of the present application, it is considered that if the traffic detected in the listening window is non-periodic, there is no inevitable relationship with the resource to be excluded in the selection window, so that the resource reserved for the first data can be directly used as the excluded resource to avoid collision with the transmission resource of other terminal devices.

In one possible design, the type of the first data is the second type.

In one possible design, the type of the first data is the second type, the first set of resources includes a third resource, the third resource is a frequency domain resource of the first data detected in the listening window, and a signal quality of the third resource is greater than a third threshold.

Considering that the detection of the aperiodic service in the listening window is not necessarily related to the time domain position appearing in the selection window in the future, but the frequency domain position appearing in the selection window may have a correlation, the frequency domain resource with a larger signal quality is selected as the excluded resource in the embodiment of the present application, so that the potential interference and collision can be reduced.

In one possible design, the third resource is a partial sub-channel in the listening window, and the priority of data corresponding to the partial sub-channel is higher than the priority of the second data.

In the embodiment of the present application, the sub-channel with a higher priority may only seize the data of the service with a lower priority without seizing the data of the service with a high priority, so that the influence on the service may be reduced.

In one possible design, the time domain resources occupied by the partial sub-channels are all detected time slots in the listening window.

In one possible design, the signal quality of the third resource is any one of an average value of signal qualities of the partial sub-channels over all time slots, a maximum signal quality, a minimum signal quality, a median signal quality, a weighted average signal quality, and the like.

In one possible design, the method further includes:

the first device determines an exclusion window from the selection window;

the first device determines the first set of resources from the exclusion window.

In the embodiment of the present application, the exclusion window may be determined first, and the prediction range of the resource in the selection window may be reduced when the resource to be excluded is determined from the exclusion window.

In one possible design, the first device determines an exclusion window from the selection windows, including:

the first device determines the exclusion window from the selection windows based on at least one of:

the priority of the second data, the type of the second data, the service attribute of the second data, the transmission mode of the second data and the first signaling; the transmission mode of the first data comprises a unicast mode, a multicast mode or a broadcast mode, and the first signaling is indicated by the network equipment or preconfigured.

the first device determines the exclusion window in the selection window according to the priority of the second data;

wherein the higher the priority of the second data is, the shorter the time length of the exclusion window is; or the higher the priority of the second data is, the longer the time length of the exclusion window is.

In this embodiment of the present application, the higher the priority of the second data is, the shorter the time length of the exclusion window is, and more available resources can be reserved for a high-priority service. The higher the priority of the second data is, the longer the time length of the exclusion window is, and the potential interference resources can be excluded as much as possible for the high-priority traffic.

In one possible design, the determining, by the first device, the exclusion window in the selection window according to the priority of the second data includes:

and the first equipment determines the exclusion window according to the corresponding relation between the priority and the size of the exclusion window and the priority of the second data.

In one possible design, the first device determines an exclusion window in the selection window, including:

the first device receiving first signaling from a second device, the first signaling for configuring a size of the exclusion window;

the first device determines the exclusion window from the selection window according to the first signaling.

The technical scheme can ensure the balance between the performance and the flexibility as much as possible.

the first device determines the exclusion window from the selection window according to the type of the second data; wherein the content of the first and second substances,

the type of the second data is the first type, and the time length of the exclusion window is M sending periods of the second data, wherein M is a positive integer configured, predefined or preconfigured by signaling; alternatively, the first and second electrodes may be,

the type of the first data is the second type, the time length of the exclusion window is the time length required for sending the second data to be initially transmitted and retransmitted, wherein N is a positive integer configured, predefined or preconfigured for signaling.

According to the technical scheme, the first device can determine the size of the exclusion window according to the period of the second data, namely, the size of the exclusion window is determined according to the transmission delay of the service, so that unnecessary exclusion operation can be reduced, and the delay of excluding resources is reduced.

In one possible design, the first device determines the exclusion window from the selection window, including:

the first equipment determines the exclusion window according to the sending interval of the second data and the time length of the configured exclusion window; or the like, or, alternatively,

and if the sending interval is greater than the time length of the configured exclusion window, the size of the exclusion window is the sending interval.

In the above scheme, for the aperiodic service, the terminal device may determine the size of the exclusion window according to the time required for sending the data, which may reduce unnecessary exclusion operations and reduce the time delay for excluding resources.

the first equipment determines the exclusion window from the selection window according to the service attribute of the second data; wherein, the sizes of the exclusion windows corresponding to different service attributes are different.

In one possible design, the first device determines an exclusion window in the selection window, including: the first device determines the exclusion window according to a subcarrier spacing caused by a message for transmitting the second data; wherein, the size of the exclusion window corresponding to different subcarrier intervals is different.

In one possible design, the method further includes:

the first device determines a second resource set according to the first control information and/or the first data detected in the listening window, wherein the second resource set is a set of resources which are not detected in the listening window;

the first device determines the first set of resources from the second set of resources.

The embodiment of the application provides a way of determining excluded resources in a selection window for undetected resources, so as to exclude potential interference resources.

In one possible design, the first device determining the first set of resources from the second set of resources includes:

and the first equipment determines the resources needing to be excluded in the exclusion window according to the time slot position of a second resource set and a first period, wherein the first period is a period of first type data possibly sent on the second resource set.

For undetected resources, the slot positions of future data in the selection window can be predicted according to the period of the first type of data possibly transmitted on the second resource set, so that interference to other terminal devices is eliminated and reduced.

the first equipment determines a first parameter according to the type of the second data;

the first device determines the transmission resource from the set of candidate resources according to the first parameter.

In one possible design, the first parameter includes:

a first probability and a second probability, wherein the first probability is the probability of continuously using the existing resources to transmit the data of the first type, and the second probability is the probability of continuously using the existing resources to transmit the data of the second type; alternatively, the first and second electrodes may be,

a third threshold for determining resources from the set of candidate resources for transmitting a first type of data and a fourth threshold for determining resources from the set of candidate resources for transmitting a second type of data; alternatively, the first and second electrodes may be,

a fifth threshold for determining a signal quality threshold for the first set of resources for the first type of data and a sixth threshold for determining a signal quality threshold for the first set of resources for the second type of data.

The terminal device can determine the first parameter according to the type of the second data, and then determine the sending resource from the candidate resources according to the first parameter, so that the resource excluded from the selection window is more matched with the second data, and the possibility of collision is reduced.

In one possible design, the first device determines the first set of resources according to the first control information and/or the second data listened to in the listening window, including:

the first device determines the first resource set according to the first control information and/or the second data intercepted in the listening window, including:

the first device determines a first candidate resource set and a second candidate resource set from the selection window, wherein the first candidate resource set S1 is a set of determined available resources, and the second candidate resource set S2 is a set of resources occupied by a second type of data in the selection window corresponding to the listening window;

when the first candidate set of resources is less than a seventh threshold, the first device determines the first set of resources from the second candidate set of resources.

The technical scheme can select the deterministic unused resources first, and then select the resources from the non-deterministic resources according to a certain rule, and the selected resources can reduce the possibility of transmission collision.

In a second aspect, a communication device is provided, which includes a processor for implementing the method performed by the first communication device in the first aspect. The communication device may also include a memory for storing program instructions and data. The memory is coupled to the processor, and the processor can call and execute the program instructions stored in the memory, so as to implement any one of the methods performed by the first device in the first aspect. The communication device may also include a transceiver for the communication device to communicate with other devices.

In a third aspect, an embodiment of the present application provides a communication apparatus, including: the processing unit is used for determining a first resource set according to first control information and/or first data detected in the listening window, wherein the first resource set is a resource needing to be excluded from the selection window, and the first control information is used for indicating the type of the first data; determining transmission resources from a candidate set of resources, the candidate set of resources including resources of the selection window other than the first set of resources; and the transceiving unit is used for transmitting the second data on the transmission resource under the control of the processing unit.

In addition, the communication apparatus provided in the third aspect may be configured to execute the method corresponding to the first device in the first aspect, and for implementation manners not described in detail in the communication apparatus provided in the third aspect, reference may be made to the foregoing embodiments, and details are not described here again.

In a fourth aspect, there is provided a computer program product comprising: computer program code which, when run on a computer, causes the computer to perform the method of the above aspects performed by the first device.

In a fifth aspect, the present application provides a chip system comprising a processor for implementing the functions of the first device in the methods of the above aspects, e.g. for receiving or processing data and/or information involved in the above methods. In one possible design, the system-on-chip further includes a memory to hold program instructions and/or data. The chip system may be formed by a chip, or may include a chip and other discrete devices.

In a sixth aspect, the present application provides a computer-readable storage medium storing a computer program that, when executed, implements the method of the above aspects performed by the first device.

Advantageous effects of the second to sixth aspects and implementations thereof described above reference may be made to the description of the advantageous effects of the method of the first aspect and implementations thereof.

Drawings

FIG. 1 is a schematic view of V2X provided in the embodiments of the present application;

FIG. 2 is a schematic diagram of excluding unavailable resources from a candidate resource set according to an embodiment of the present application;

FIG. 3 is a schematic diagram of excluding unavailable resources from a candidate resource set according to an embodiment of the present application;

FIG. 4 is a schematic diagram of excluding unavailable resources from a candidate resource set according to an embodiment of the present application;

fig. 5 is a schematic diagram of a network architecture according to an embodiment of the present application;

fig. 6 is a flowchart of a communication method provided in an embodiment of the present application;

fig. 7 is a schematic diagram of aperiodic data determination resources provided in an embodiment of the present application;

fig. 8 is a schematic diagram of aperiodic data determination resources provided in an embodiment of the present application;

fig. 9 is a schematic diagram of aperiodic data determination resources provided in an embodiment of the present application;

fig. 10 is a schematic diagram of a communication device according to an embodiment of the present application;

fig. 11 is a schematic diagram of a communication device according to an embodiment of the present application;

fig. 12 is a schematic diagram of a communication device according to an embodiment of the present application;

fig. 13 is a schematic diagram of a communication device according to an embodiment of the present application;

fig. 14 is a schematic diagram of a communication device according to an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the embodiments of the present application will be described in further detail with reference to the accompanying drawings.

Before describing the present application, a part of terms in the embodiments of the present application will be briefly explained so as to be easily understood by those skilled in the art.

1) Terminal equipment, including devices that provide voice and/or data connectivity to a user, may include, for example, handheld devices with wireless connection capability or processing devices connected to wireless modems. The terminal device may communicate with a core network via a Radio Access Network (RAN), exchanging voice and/or data with the RAN. The terminal device may include a User Equipment (UE), a wireless terminal device, a mobile terminal device, a device-to-device communication (D2D) terminal device, a V2X terminal device, a machine-to-machine/machine-type communication (M2M/MTC) terminal device, an internet of things (IoT) terminal device, a subscriber unit (subscriber unit), a subscriber station (subscriber state), a mobile station (mobile state), a remote station (remote state), an access point (access point, AP), a remote terminal (remote terminal), an access terminal (access terminal), a user terminal (user terminal), a user agent (user agent), a passenger plane (e.g., an unmanned plane, hot air balloon, or the like), or a user equipment (user), etc. For example, mobile telephones (or so-called "cellular" telephones), computers with mobile terminal equipment, portable, pocket, hand-held, computer-included mobile devices, and the like may be included. For example, Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), and the like. Also included are constrained devices, such as devices that consume less power, or devices that have limited storage capabilities, or devices that have limited computing capabilities, etc. Examples of information sensing devices include bar codes, Radio Frequency Identification (RFID), sensors, Global Positioning Systems (GPS), laser scanners, and the like.

By way of example and not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable equipment can also be called wearable smart device or intelligent wearable equipment etc. is the general term of using wearable technique to carry out intelligent design, develop the equipment that can dress to daily wearing, like glasses, gloves, wrist-watch, dress and shoes etc.. A wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction and cloud interaction. The generalized wearable smart device includes full functionality, large size, and can implement full or partial functionality without relying on a smart phone, such as: smart watches or smart glasses and the like, and only focus on a certain type of application functions, and need to be used in cooperation with other devices such as smart phones, such as various smart bracelets, smart helmets, smart jewelry and the like for monitoring physical signs.

The various terminal devices described above, if located on a vehicle (e.g., placed in or installed in the vehicle), may be considered to be vehicle-mounted terminal devices, which are also referred to as on-board units (OBUs), for example.

2) Network devices, including, for example, Access Network (AN) devices, such as base stations (e.g., access points), may refer to devices in AN access network that communicate with wireless terminal devices over one or more cells over AN air interface, or, for example, network devices in one type of V2X technology are Road Side Units (RSUs). The base station may be configured to interconvert received air frames and Internet Protocol (IP) packets as a router between the terminal device and the rest of the access network, which may include an IP network. The RSU may be a fixed infrastructure entity supporting the V2X application and may exchange messages with other entities supporting the V2X application. The network device may also coordinate attribute management for the air interface. For example, the network device may include an evolved Node B (NodeB or eNB or e-NodeB) in a Long Term Evolution (LTE) system or an advanced long term evolution (LTE-a) system, or may also include a next generation Node B (gNB) in a 5G NR system, or may also include a Centralized Unit (CU) and a Distributed Unit (DU) in a Cloud access network (Cloud RAN) system, which is not limited in the embodiments of the present application.

3) V2X, in version (Rel) -14/15/16, V2X has established itself as a major application of device-to-device (D2D) technology. The V2X optimizes the specific application requirements of V2X based on the existing D2D technology, and needs to further reduce the access delay of V2X devices and solve the problem of resource conflict.

V2X specifically includes several application requirements, such as vehicle-to-vehicle (V2V), vehicle-to-infrastructure (V2I), vehicle-to-pedestrian (V2P) direct communication, and vehicle-to-network (V2N) communication interaction. As shown in fig. 1. V2V refers to inter-vehicle communication; V2P refers to vehicle-to-person communication (including pedestrians, cyclists, drivers, or passengers); V2I refers to vehicle to network device communication, such as RSU, and another V2N may be included in V2I, V2N refers to vehicle to base station/network communication.

Among them, the RSU includes two types: the RSU of the terminal type is in a non-mobile state due to being distributed on the roadside, and mobility does not need to be considered; the RSU, being of the base station type, can provide timing synchronization and resource scheduling to the vehicle with which it communicates.

4) The terms "system" and "network" in the embodiments of the present application may be used interchangeably. The "plurality" means two or more, and in view of this, the "plurality" may also be understood as "at least two" in the embodiments of the present application. "at least one" is to be understood as meaning one or more, for example one, two or more. For example, including at least one means including one, two, or more, and does not limit which ones are included, for example, including at least one of A, B and C, then including may be A, B, C, A and B, A and C, B and C, or a and B and C. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" generally indicates that the preceding and following related objects are in an "or" relationship, unless otherwise specified.

Unless stated to the contrary, the embodiments of the present application refer to the ordinal numbers "first", "second", etc., for distinguishing between a plurality of objects, and do not limit the sequence, timing, priority, or importance of the plurality of objects. For example, the first type and the second type are only for distinguishing different types, and do not indicate differences in content, priority, degree of importance, or the like between the two types.

The first device in the present invention may be a terminal device or a network device. The scheme of the present invention may be used for a sidelink and a cellular link, which is not limited in the present invention.

Having described some of the concepts related to the embodiments of the present application, the following describes features of the embodiments of the present application.

V2X is a key technology of the future intelligent transportation system. It enables communication between cars, between cars and base stations, and between base stations. Therefore, a series of traffic information such as real-time road conditions, road information, pedestrian information and the like is obtained, so that the driving safety is improved, the congestion is reduced, the traffic efficiency is improved, and the vehicle-mounted entertainment information is provided.

In the resource selection of mode 4 of LTE-V2X, the terminal device needs to remove undetected resources and data of corresponding positions on the detected resources from the candidate resources. That is, the terminal device may remove all resources used during transmission in undetected subframes for all potential various periods in the selected window in order to detect a subframe

For ease of understanding, how the terminal device selects resources is described below in conjunction with fig. 2, 3, and 4.

For example, please refer to fig. 2, which is a schematic diagram illustrating the exclusion of unavailable resources from the candidate resource set. Fig. 2 includes a Sensing window, and a selection window that follows the Sensing window in time. The selection window may be considered a defined set of resources, including a candidate set of resources. In some embodiments, the candidate resource set may be a set of candidate resources on all subchannels on the resource pool on all timeslots within the selection window, the candidate resources being resources when the terminal device transmits and/or receives data. Alternatively, the unit of the sub-channel of the present invention may be configured, pre-configured, or predefined. The size of the PRB may be one physical Resource block PRB (physical Resource block), or may be multiple PRBs, or may be a frequency-domain continuous PRB, or may be a frequency-domain discontinuous PRB, which is not limited in the present invention. The selection window in the present invention is a collection of resources on a particular pool of resources within a consecutive number of time slots or symbols. The candidate resource sets may be contiguous or non-contiguous in the time and/or frequency domain. Optionally, the resource pool is a set of resources with a certain frequency range and frequency size in the frequency domain. There may be several PRBs or subchannels, and the size and frequency position of the PRBs or subchannels may be configured or preconfigured by signaling, or may be predefined, which is not limited by the present invention. Alternatively, the resource pool may be frequency domain contiguous or non-contiguous. The optional resource pool may be a transmission resource pool, a reception resource pool, or a resource pool used for transmission or reception at the same time, which is not limited in the present invention.

Fig. 2 illustrates an example in which the reservation period of a terminal device detected or assumed within the listening window is greater than or equal to 400 ms. The Sensing window comprises the resources of the Sensing terminal equipment and the reserved resources thereof. The selection window comprises candidate resources of the terminal device, and fig. 2 further comprises candidate resources of the terminal device located after the selection window and reserved resources thereof. The terminal device may listen to the data in the Sensing window at a period of, for example, 100ms in the Sensing window, or may consider the traffic as occurring, thereby determining available resources for subsequently transmitting the data. Since data is subsequently transmitted, the available resources for subsequently transmitting data may also be considered as candidate resources for transmitting data, and are therefore also referred to as transmission resources in the following.

Currently, the terminal device may determine whether there is a resource colliding with the candidate resource at a period of 400ms outside the Sensing window according to a period of greater than or equal to 100ms, for example, data that occurs in 400ms Sensing. And if the resources which conflict with the candidate resources exist in the candidate resource set corresponding to one 400ms period outside the Sensing window, excluding the conflicting resources from the candidate resource set. The determination of which of the previous selection windows to exclude may be based on the resource of the last collision. For example, in fig. 2, the resource that collides with the candidate resource at a period of 400ms outside the Sensing window is the candidate resource and its reserved resource of the last terminal device in fig. 2, so that the candidate resource and its reserved resource of the last terminal device in fig. 2 can be excluded from the candidate resources. The terminal device can then transmit data on the candidate resource from which the collision resource is excluded, and can reduce the occurrence of collision between the detected resource and the candidate resource for transmitting the data to be transmitted, thereby reducing unnecessary interference.

For another example, please refer to fig. 3, which is a schematic diagram illustrating the exclusion of unavailable resources from the candidate resource set. Fig. 3 is similar to fig. 2, except that the reservation period of the sending terminal device shown in fig. 3 is less than 100ms, for example 20 ms. Since the reservation period of the sending terminal device is small, it needs to consider whether there are resources conflicting with the candidate resource in a plurality of candidate resource sets, for example, 5 candidate resource sets shown in fig. 3, outside the Sensing window corresponding to the reservation period of the sending terminal device. For example, the last reserved resource, i.e., resource number 5, conflicts with the candidate resource.

For another example, please refer to fig. 4, which is a schematic diagram illustrating the exclusion of unavailable resources from the candidate resource set. Fig. 4 is similar to fig. 3, except that the reservation period of the sending terminal device shown in fig. 4 is less than 100ms, for example 50 ms. This needs to consider whether there are resources in the 2 candidate resource sets outside the Sensing window that conflict with the candidate resource. For example, the last reserved resource, i.e., resource number 2, conflicts with the candidate resource.

Fig. 2-4 all take the example that the terminal device periodically transmits data, that is, the data is periodically transmitted. However, in practical applications, the data transmitted by the terminal device may be non-periodic, for example, for a certain service, after the data is transmitted once, there is no data to continue transmitting. In this case, the terminal device detects the occurring data in the sending window, and may determine that the data occurs in the sending window, and since the data is aperiodic data, the aperiodic data does not necessarily have a necessary relationship with the resource for eliminating the conflict in the selection window, if the current way of eliminating the resource that may conflict in the selection window is used, it may be determined that the resource is wrong, and the available candidate resource is determined to be the resource to be eliminated, which causes waste of the resource.

In view of this, in the embodiment of the present application, the first resource set, i.e. the resources that need to be excluded from the selection window, is determined in the sending window according to the detected control information and/or the first data, and then the candidate resources are determined in the remaining candidate resource sets excluding the first resource set in the selection window for transmitting the second data. Therefore, the first resource set can be determined according to whether the first data is periodic or not, so that the available resources are prevented from being eliminated as much as possible, and the resources are saved. At the same time, it is helpful to determine the resources to be excluded more flexibly for different data.

The technical scheme provided by the embodiment of the application can be applied to a 5G system, or a future communication system or other similar communication systems. In addition, the technical solution provided in the embodiment of the present application may be applied to a cellular link, and may also be applied to a link between devices, for example, a device to device (D2D) link. The D2D link may also be referred to as sidelink, where the sidelink may also be referred to as an edge link or a sidelink, etc. In the embodiments of the present application, the above terms all refer to links established between devices of the same type, and have the same meaning. The devices of the same type may be links from the terminal device to the terminal device, links from the base station to the base station, links from the relay node to the relay node, and the like, which are not limited in this embodiment of the present application. For the link between the terminal device and the terminal device, there is a D2D link defined by release (Rel) -12/13 of 3GPP, and also a V2X link defined by 3GPP for the internet of vehicles, vehicle-to-vehicle, vehicle-to-cell, or vehicle-to-any entity, including Rel-14/15. But also the Rel-16 and subsequent releases of NR system based V2X link currently under investigation by 3 GPP.

The network architecture applied in the embodiments of the present application is described below. Please refer to fig. 5, which illustrates a network architecture applied in the present embodiment.

Referring to fig. 5, a schematic diagram of a network architecture of V2X is shown. Fig. 5 includes three terminal devices and four network devices, where the three terminal devices are UE1, UE2, and UE3, respectively, and the four network devices are two base stations, an RUS, and a Global Navigation Satellite System (GNSS). The network device may correspond to different devices in different systems, for example, the 4th generation (4G) system may correspond to an eNB, and the 5G system may correspond to a gNB in a 5G. The V2X terminal devices, which may also be referred to as vehicle-mounted devices, may communicate with each other to exchange information and share information, such as vehicle-connected state information including vehicle position, driving speed, etc., and may be used to determine road traffic conditions. The RSU may communicate with various on-board devices and/or base station devices and may be used to detect road surface conditions and guide the vehicle to select the optimal travel path. The base station is communicated with each vehicle-mounted device and/or RSU, and the GNSS can provide positioning time service information for other network elements. In addition, the vehicle-mounted equipment in the internet of vehicles can also communicate with people, and specific users can communicate with the vehicles through wireless communication means such as Wi-Fi, Bluetooth and honeycomb, so that the users can monitor and control the vehicles through corresponding mobile terminal equipment. The three UEs and RUS may each be under coverage of two base stations, each of which may communicate with the three UEs and RUS. The base station in fig. 5 is optional, and if there is a base station, there is a network coverage scenario; if the base station-free device is not in the network coverage-free scene. It should be noted that the number of terminal devices in fig. 5 is only an example, and in practical applications, the network device may provide services for a plurality of terminal devices. The terminal device in fig. 5 may be a V2X terminal device, such as a vehicle-mounted terminal device or a vehicle, for example, but the terminal device in the embodiment of the present application is not limited thereto.

The devices can communicate with each other through a sidelink and an uplink and a downlink, and the communication can use a frequency spectrum of a cellular link or an intelligent traffic frequency spectrum near 5.9 GHz. The technology by which devices communicate with each other may be enhanced based on communication network protocols, such as the LTE protocol, and may be enhanced based on the D2D technology.

The technical scheme provided by the embodiment of the application is described below with reference to the accompanying drawings.

An embodiment of the present application provides a communication method, please refer to fig. 6, which is a flowchart of the method. In the following description, the method is applied to the network architecture shown in fig. 5 as an example. In addition, the method may be performed by a communication device, which may be a terminal equipment or a communication device (e.g., a system-on-a-chip) capable of supporting the terminal equipment to implement the functions required by the method.

For convenience of introduction, hereinafter, the method is taken as an example in which the terminal device performs the method, that is, the communication apparatus is taken as an example in which the terminal device performs the method. For example, the terminal device may be any one of the terminal devices in fig. 5, such as an in-vehicle device, or an RUS, etc., hereinafter. It should be noted that the embodiment of the present application is only implemented by a terminal device, and is not limited to this scenario.

Specifically, referring to fig. 6, the flow of the method is described as follows.

S61, the terminal device determines the first resource set according to the first control information and/or the first data detected in the listening window.

The first control information may be considered as information for scheduling the first data. When the terminal device autonomously selects the resource, the resource possibly occupied by the subsequent data transmission can be determined from the selection window according to the detection result by the data appearing in the sensing window, so that the occupied resource can be eliminated from the selection window in advance when other data is required to be transmitted. For example, the data appearing in the listening window sending is the first data, and the other data is the second data, that is, the second data is sent after the first data. The terminal device determines the resources which may be occupied by the subsequent transmission of the first data from the selection window through the first data which appears in the listening window sending and according to the detection result, so that the resources for the subsequent transmission of the first data are excluded from the selection window in advance when the second data is transmitted, and then the terminal device can select the resources for transmitting the first data from the remaining resources except the resources for the subsequent transmission of the first data in the selection window, so as to reduce the probability of possible collision of the first data and the second data.

It should be noted that, here, the data that the terminal device has appeared in the listening window sending may be, for example, the first data that the terminal device has got in the listening window sending; or the first control information sent by the terminal device in the listening window sending; or, the first control information and the first data sent by the terminal device in the listening window sending may also be used.

In the embodiment of the present application, the selection window is located after the listening window in time, that is, the end position of the listening window is before the start position of the selection window, or the end position of the listening window overlaps with the start position of the selection window. The moment the first data arrives from an upper layer (e.g. a protocol stack) of the first device to a lower layer (e.g. a physical layer) of the first device is located between the listening window and the selection window. The selection window herein may include a candidate resource set, which may be, in some embodiments, a candidate resource on all subchannels on the resource pool on all time slots within the selection window. The terminal device may select available candidate resources from a set of candidate resources when transmitting data, which are also referred to as transmission resources in the following since the available candidate resources are used for transmitting data.

The selection window may include, in addition to the candidate resource set, an unavailable resource, where the unavailable resource is occupied by other services when the current data is transmitted. In contrast, before the terminal device sends the second data, the terminal device may exclude the unavailable resource from the selection window, that is, obtain the candidate resource set, and then select the sending resource from the candidate resource set. For convenience of description, the resources that need to be excluded from the selection window will be referred to as a first resource set hereinafter.

In some embodiments, the terminal device may configure the size of the listening window in advance, and may also configure the size of the selection window. Here, the size of the listening window may be considered as a time length of the listening window in a time domain, or may also be considered as a time domain resource occupied by the listening window, or may also be considered as a time domain position of the listening window. Similarly, the size of the selection window may be considered as the time length of the selection window in the time domain, or may also be considered as the time domain resource occupied by the selection window, or may also be considered as the time domain position of the selection window. As an implementation manner, the terminal device may configure a start position and an end position of the listening window; or the terminal equipment can configure the starting position of the listening window and the time length of the listening window; or the terminal device may configure the end position of the listening window and the time length of the listening window. Similarly, the terminal device may configure the start position and the end position of the selection window; or the terminal equipment can configure the starting position of the selection window and the time length of the listening window; or the terminal device may configure the end position of the selection window and the time length of the listening window.

In a possible implementation manner, the terminal device may configure the size of the listening window or configure the size of the selection window according to the type of the second data to be transmitted. In the embodiment of the present application, the size of the listening window may be regarded as the length of the listening window in the time domain, which is also referred to as the time length. Likewise, the size of the selection window is also referred to as the time length of the selection window.

Here, the type of data may be defined according to the characteristics of the service. For example, if the traffic is an aperiodic traffic, the type of data may be an aperiodic type, as opposed to if the traffic is a periodic traffic, the type of data may be a periodic type. As an implementation, the type of data includes a first type and a second type, and the content indicated by the first type and the second type may include, but is not limited to, the following.

First, in some examples, a first type may be used to indicate that the data is periodically transmitted data; the second type may be used to indicate that the data is non-periodically transmitted data. In yet other examples, the first type may be used to indicate that the data is non-periodically transmitted data; the second type may be used to indicate that the data is periodically transmitted data.

The second type of data may refer to data transmitted by only one or several MAC TBs, and the transmitted TBs are not continuously transmitted in a periodic manner but are intermittently transmitted according to arrival of upper layer data. Or, from the perspective of signaling, the two types of data may also be considered as a service in which one data packet is transmitted later and one data is not reserved later according to a certain period; or after one data packet is transmitted later, although there is a reservation for new data later, the transmission period between a plurality of new and old data is not fixed, that is, although the reservation is made, it is not fixed, so there is no reservation period.

Secondly, in some examples, the first type may be used to indicate that there is data to be sent in time succession after the data is sent, for example, if the terminal device performs a periodic service, then after the terminal device sends the data once, there is data to be sent in succession; the second type may be used to indicate that there is no data to be sent in time succession after the data is sent, for example, if the terminal device performs a periodic service, there may be no data to be sent after the terminal device sends the data once. Alternatively, in some embodiments, the first type may be used for data indicating that the data is periodic traffic and the second type may be used for data indicating that the data is aperiodic traffic. In other examples, the first type may be used to indicate that data is not sent sequentially in time after the data is sent; the second type may be used to indicate that there is data to be transmitted in time succession after the data has been transmitted.

Third, in some embodiments, the first type may be used to indicate that the control information corresponding to the data indicates a reservation; the second type may be used to indicate that the control information to which the data corresponds does not indicate a reservation. In other examples, the second type may be used to indicate that the control information corresponding to the data does not indicate a reservation; the first type may be used to indicate that the control information to which the data corresponds indicates a reservation.

For example, for a service performed by a terminal device, the control information for scheduling data of the service may include an indication information, which may be used to indicate whether resources are reserved for the service or the data. The data may be considered to be of the first type if the control information indicates that resources are reserved for the data. In contrast, if the control information indicates that no resources are reserved for the data, the data may be considered to be a second type of data.

Fourth, in some embodiments, the first type may be used to indicate that the control information corresponding to the data indicates a reservation for other data; the second type may be used to indicate that the control information to which the data corresponds does not indicate a reservation or indicates a reservation between different retransmissions of the same data. In some embodiments, the first type may be used to indicate that the control information corresponding to the data does not indicate a reservation from an initial transmission to a retransmission or indicates a reservation between different retransmissions of the same data; the second type may be used to indicate that the control information to which the data corresponds indicates a reservation for other data.

For example, if the terminal device performs an aperiodic service, after the terminal device transmits data once, there may be no data to transmit subsequently. In this case, the scheduling terminal device to transmit control information, e.g. first data, may indicate that resources are reserved for other data, e.g. second data, in addition to indicating that resources are not reserved for the first data. At this time, the first data may be considered to be the first type of data. In contrast, if the control information of the first data indicates that resources are not reserved for the first data, the first data may be considered to be the second type of first data. Or, if the control information indicates that resources are reserved for the initial transmission of the first data for one or more retransmissions of the first data.

Fifth, in some embodiments, both the first type and the second type are used to indicate a priority of the data, and the priority of the first data of the first type is lower than the priority of the first data of the second type. Or in other embodiments, the first type and the second type are both used to indicate the priority of the data, and the first data of the first type has a higher priority than the first data of the second type.

In the embodiment of the present application, the terminal device configures the size of the listening window according to the type of the second data, including but not limited to the following three configuration modes.

In a first configuration manner, the terminal device may configure a listening window corresponding to the second type for the second type of data.

In a second configuration, the terminal device may configure a shorter listening window for the second type of data.

Shorter here with respect to the length of time of the listening window configured for the first type of data. For example, the type of the second data is a first type, and the length of the listening window of the second data is a first time length; the type of the second data is a second type, the length of the listening window of the second data is a second time length, and the first time length is larger than the second time length.

In a third configuration mode, the time length of the listening window configured for the first type of data by the terminal device is the same as the time length of the listening window configured for the second type of data by the terminal device.

It should be noted that, the size of the listening window configured by the terminal device may be a starting position and an ending position of the listening window, may be a starting position and a time length of the listening window configured, and may also be an ending position and a time length of the listening window configured, which is specifically adopted, which is not limited in the embodiment of the present application.

In this case, if the terminal device detects the second type of data in the listening window, since the second type of data detected in the listening window farther from the selection window does not necessarily appear in the selection window, it may only be necessary to detect the result of Sensing in a time window closer to the selection window. If the terminal device detects the first type of data in the listening window, the result of the sending needs to be analyzed in the whole listening window.

Similar to configuring the listening window, in the embodiment of the present application, the terminal device configures the size of the selection window according to the type of the second data, including but not limited to the following three configuration manners.

In a first configuration, the terminal device may configure a shorter selection window for the second type of data.

Shorter here with respect to the selected length of time for the first type of data configuration. For example, the type of the second data is a first type, and the length of the selection window of the second data is a first time length; the type of the second data is a second type, the selected length of the second data is a second time length, and the first time length is greater than the second time length. The smaller the selection window, the data is sent out within, for example, 3ms, and resources other than, for example, 100ms need not be acknowledged. The delays may be different for different terminal devices, so that an appropriate resource may be selected for transmitting data. The larger the relative selection window, the more resources are available for transmitting data.

In the second configuration, the terminal device may configure the size of the selection window according to the signaling.

The signaling may be transmitted by the network device. In a possible implementation manner, the signaling may be a system message, an RRC signaling, or a downlink Control information dci (downlink Control information), and the signaling may carry a time length for indicating the size of the selection window.

In a third configuration, the terminal device may configure the size of the selection window according to at least one of a period, a delay, and a priority of the second data.

For example, the larger the delay, the larger the selection window may be used to select the best resource from the multiple available resources to reduce collisions. The priority is high and the selection window is large, so that a larger selection window can be used to select the best resource from the multiple available resources to reduce the conflict.

It should be noted that, the size of the selection window configured by the terminal device may be a start position and an end position of the selection window, may be a start position and a time length of the selection window configured, or may be an end position and a time length of the selection window configured, which is specifically adopted, and the embodiment of the present application is not limited.

After the terminal device configures the listening window and the selection window, or determines the listening window and the selection window, the resource to be excluded from the selection window, hereinafter also referred to as a first resource set, may be determined according to the first control information and/or the first data detected in the listening window.

Specifically, the terminal device may determine the first resource set according to the detection result of the listening window and the type of the second data. Different detection results and different types of second data, the determined result of the first resource set is different, and the following different detection results and different types of second data receive the first resource set if determined.

In the first case, the terminal device detects the presence of the first data in the listening window, and the first data is of the second type, and the second data is also of the second type.

In this case it needs to be excluded that the reserved resources within the listening window are located in part of the selection window. That is, the first resource set includes resources occupied by the first data and/or reserved resources indicated by the first control information, and the reserved resources are located within the selection window.

Here, the reserved resource indicated by the first control information may be a resource reserved for retransmission of the first data. If the initial transmission of the first data is in the listening window but the resources for the retransmission of the first data are reserved within the selection window, then the resources should be excluded.

For example, if the first data is transmitted for the first time and the second data is transmitted for the second time, the reserved resources indicated by the first control information may be resources reserved for the second data, and the reserved resources are used for the first transmission and/or the second transmission of the second data.

For example, please refer to fig. 7, which is a schematic diagram illustrating resource determination for aperiodic data. As can be seen from fig. 7, the resource 5 for initial transmission and retransmission of the first data and the reserved resource for initial transmission and/or retransmission of the third data indicated by the first control information are resource 6, so the first resource set should include resource 5 and resource 6, which is resource 8 shown in fig. 7.

Even if there is no correlation between the position of the occurrence of non-periodic data, such as first data, that has occurred in the past in the listening window and the position of the non-periodic data that occurs in the future, if the resources reserved for the non-periodic data are located within the selection window, then the second data will obviously collide if the reserved resources are selected from the selection window to transmit the second data. Therefore, in the embodiment of the present application, the resources reserved for the corresponding aperiodic data are directly excluded from the selection window, thereby avoiding the collision of the transmission resources of the plurality of terminal devices.

As an implementation manner, the embodiment of the present application may determine the signal quality of the first control information, and determine whether to exclude the resource reserved for the corresponding aperiodic data from the selection window according to the signal quality of the first control information, where the signal quality of the first control information may be regarded as the signal quality of a channel carrying the first control information. If the signal quality is higher, it can be considered that the resource reserved for a certain data is closer to the end position of the listening window. If the signal quality is low, it can be considered that the resource reserved for a certain data is farther than the end position of the listening window. Therefore, in the embodiment of the present application, it may be determined that, when the signal quality of the first control information is greater than the first threshold, the reserved resource indicated by the first control information is excluded from the selection window, that is, the first set of resources includes the first reserved resource, the first reserved resource is a resource indicated by the first control information, and the signal quality of the first control information is greater than the first threshold. Here, the first threshold may be a preset threshold.

Similarly, for the first resource set including the first reserved resource and/or the second reserved resource, the second reserved resource is a resource reserved for the second data whose signal quality is greater than the second threshold.

Further, considering that the type of the first data detected in the listening window is the second type, i.e., the first data is non-periodic data, it cannot be predicted from past behavior whether or not it will appear in the selection window, or where it appears. Therefore, in the embodiment of the present application, if it is determined that the type of the first data detected in the listening window is the second type, the resource not reserved for the first data in the window is selected, and the resource occupied by the non-periodic data which appears in history can be excluded from the listening window.

As an implementation manner, the embodiment of the application may count the sub-channels where the first data appears detected in the listening window, and remove, from the listening window, the resources occupied by the non-periodic data that has historically appeared according to the proportion that the sub-channels where the first data appears occupy all the sub-channels included in the listening window. If the above ratio is large, the probability that the data appearing on the sub-channel is non-periodic data may be considered to be large. Therefore, the embodiment of the application can count the energy at the same sub-channel position on all sub-frames in the listening window, and determine which sub-channels to exclude according to the energy, thereby reducing potential interference and collision. The resources on the excluded sub-channels are referred to as third resources in the following, i.e. the first set of resources comprises third resources.

For example, the embodiment of the present application may determine an average value of signal quality, a maximum value of signal quality, a minimum value of signal quality, or an average value of the maximum value of signal quality and the minimum value of signal quality, etc. of a sub-channel in which the first data occurs in the listening window over all sub-frames, and for convenience of description, the average value of signal quality, the maximum value of signal quality, the minimum value of signal quality, or the average value of the maximum value of signal quality and the minimum value of signal quality are collectively referred to as signal quality. The signal quality is larger, which indicates that there is available resource closer to the terminal device. In the embodiment of the application, the resource with the signal quality greater than the third threshold is determined as the third resource.

Here, the third threshold may be a preset threshold, for example, the third threshold may be set according to the priority of the data.

As another implementation manner, the embodiment of the present application may count only the sub-channels with higher traffic priority than data priority, and determine the signal quality of the counted sub-channels. The priority is higher, that is, the data of the high-priority service is not preempted, and only the data of the lower-priority service is preempted, so that the influence on the service can be reduced.

In the second case, the terminal device detects that the first data appears in the listening window, and the first data is of the first type, and the second data is of the second type.

The method for determining the first resource set from the selection window by the terminal device is the same as the determination method in the first case, and the resources that need to be excluded from the selection window include resources reserved for the first data.

The difference from the first case is that the listening window in the second case is different from the listening window in the first case. The first set of resources includes a window that determines excluded resources

In the third case, the terminal device detects that the first data appears in the listening window, and the first data is of the second type, and the second data is also of the first type.

The method for determining, by the terminal device, the first resource set from the selection window is similar to the determination method in the first case, and the terminal device may determine that the resource that needs to be excluded from the selection window includes a resource reserved for the first data, which may specifically refer to the description of the first case, and details are not repeated here.

In a fourth case, the terminal device detects that the first data appears in the listening window, and the first data is of the first type, and the second data is of the first type.

By the mode, the conflict between the detected resource and the transmission resource of the data packet to be transmitted can be reduced, and therefore unnecessary interference is reduced.

Further, in the embodiment of the present application, before determining the resource to be excluded from the selection window, that is, the first resource set, an exclusion window may be determined in the selection window, where the exclusion window may include reserved resources, and the reserved resources are used for retransmission of the first data or for initial transmission or retransmission of the third data, and then the first resource set is determined from the exclusion window, so as to determine the first resource set as accurately as possible.

As an implementation manner, the embodiment of the present application may determine the exclusion window from the selection window based on the priority of the second data, the type of the second data, the service attribute of the second data, the transmission manner of the second data, and signaling for configuring the size of the exclusion window.

In a first implementation manner, the exclusion window may be determined from the selection window according to the priority of the second data.

For example, please refer to fig. 8, which is a schematic diagram illustrating the determination of the time length of the exclusion window. Pi in fig. 8 indicates the level of priority.

Illustratively, the higher the priority of the second data, the smaller the length of time of the exclusion window.

In some embodiments, the priority may correspond to the number of detection cycles, for example, the priority of the second data is P1, and the time length of the exclusion window may be 1 data cycle, i.e., it is only necessary to determine whether there is reserved resource over 1 data cycle. For another example, the second data has a priority of P2, and the time length of the exclusion window may be 2 data periods, i.e. it is only necessary to determine whether there are reserved resources over 2 data periods. When the priority of the second data is lower than the preset threshold, only whether reserved resources exist in the preset threshold can be detected.

In some embodiments, the time lengths of the exclusion windows corresponding to different priorities may also be different. For example, the time length of the exclusion window corresponding to the priority P1 is T1; for example, priority P2 corresponds to exclusion window having a time length of T2. The method and the terminal device can establish the corresponding relation between the priority and the time length of the exclusion window in advance, so that the terminal device can determine the time length of the exclusion window from the selection window according to the corresponding relation and the priority of the second data.

The higher the priority of the second data, the smaller the time length of the exclusion window, which can reserve more available resources for high priority traffic.

Illustratively, the higher the priority of the second data, the greater the length of time of the exclusion window.

Similar to the case that the higher the priority of the second data is, the smaller the time length of the exclusion window is, in the embodiment of the present application, when the priority is higher than the preset threshold, only whether the reserved resource exists within the preset threshold is detected. If the priority of the second data is lower than the preset threshold, whether the reserved resources exist can be detected on an exclusion window with shorter time length. This can eliminate potential interference resources as much as possible for high priority traffic.

In a second implementation, the size of the exclusion window is configured by signaling, which may ensure a balance between performance and flexibility as much as possible. The terminal device may determine the size of the exclusion window according to the configuration of the signaling.

In some embodiments, this signaling may be configured for each terminal device, may be configured for a certain terminal device group, or may be configured for a resource pool.

In a third implementation, the terminal device may determine the size of the exclusion window according to the period of the second data. The method determines the size of the exclusion window according to the transmission delay of the service, thereby reducing unnecessary exclusion operation and reducing the delay of excluding resources.

In some embodiments, for periodic traffic, resources are excluded for at least one period, so the size of the exclusion window may be the size of one or several exclusion windows. That is, the time length of the exclusion window may be the time length of one or more exclusion windows, wherein the time length of one or more exclusion windows may be specifically determined according to the period of the second data.

For aperiodic traffic, the terminal device may determine the size of the exclusion window according to the time required to finish transmitting data. For example, the terminal device may determine that the size of the exclusion window is an integer multiple of the time required to finish transmitting the data. For example, 2ms is required for transmitting the current aperiodic data, the time length of the exclusion window can be configured to be an integer multiple of 2ms, i.e., at least one time window of 2 ms.

In a fourth implementation, the terminal device may determine the size of the exclusion window according to the period of the second data and the configured (selected) size of the exclusion window.

For example, the terminal device may use, as a window for use when excluding resources from the periodic traffic, a period of which second data and a configured (selected) exclusion window size according to a smaller value or a larger value of the two.

In a fifth implementation manner, the terminal device determines the size of the exclusion window according to the message type or the service attribute of the second data, or the terminal device configures the size of the exclusion window according to the message type or the service attribute of the second data. The size of the exclusion window is set according to the services with different attributes, so that exclusion resources can be selected adaptively and preferentially according to different services.

For example, as for a service related to Basic Security Message (BSM), the time length of the exclusion window may be set to, for example, 100 ms. For queued multicast traffic, the time length of the exclusion window may be set, for example, 50 ms. For the automatic driving service, the time length of the exclusion window may be set, for example, 10ms or 20ms or the like.

The above-described embodiments describe how the terminal device determines the resources to be excluded in the selection window when the listening window detects the resources. In the following, it is described how to determine the resources to be excluded in the selection window in case no resources are detected within the listening window.

Generally, in the listening window, there will always be a portion of the time slot that the terminal device is not receiving or detecting. For example, due to the half-duplex limitation of the terminal device, when there is data transmission on the present carrier or other carriers, no detection is made within the listening window within the current resource pool or part of the bandwidth.

As an implementation manner, the terminal device may determine the second set of resources according to the first control information and/or the first data detected in the listening window. The second set of resources here is a set of resources that are not detected in the listening window, e.g. the set of resources shown by the black area in fig. 9. The terminal device determines the first resource set from the second resource set.

In some embodiments, the terminal device may determine a slot position in the exclusion window to exclude the second data from the second set of resources based on the slot position of the second set of resources and a periodicity of data that may be transmitted on the second set of resources. For convenience of description, the slot positions of the second data in the exclusion window are hereinafter referred to as a third set, and the third set is a resource to be excluded. Alternatively, in some embodiments, the terminal device may determine the third set based on slot positions of the second set of resources and an interval between retransmissions of the first data. I.e., periodic resources may be excluded from undetected time slots for aperiodic traffic.

For example, if a first type of data is transmitted in a timeslot that is not detected within the listening window, and the type of the second data is a second type, the embodiment of the present application may determine a timeslot position, i.e., a third set, where various second data may be required to be excluded from the transmission time window of the current data transmission. It should be noted that, here, the transmission time window may be considered as a maximum time length of a time window allowed for transmitting the current data packet, such as 1ms, 2ms, 3ms, 5ms, 10ms, and the length of the transmission time window may be determined by a delay characteristic of the current data to be transmitted.

Specifically, the third set may be determined by formula (1).

y+P _{rsvp_TX}＝z+P _k×q (1)

In equation (1), y is a time slot not to be excluded, P_{rsvp_TX}For the period of the service to be sent, z is the undetected slot number, Pstep is the unit of the possible period of the periodic service, P_kAnd q is the period number of the periodic service to be detected, wherein the period number is the period of the periodic service possibly occurring.

For example, if a first type of data is transmitted in a timeslot that is not detected in the listening window, and the type of the second data is the first type, the embodiment of the present application may determine the timeslot position of the second data in the selection window, that is, the fourth set, that is, the resource to be excluded, according to the timeslot position of the second resource set and the period of the first type of data that may be transmitted on the second resource set.

And S62, the terminal equipment determines candidate resources of the second data from the selection window according to the first resource set.

After the terminal device determines the first resource set, that is, the resource that needs to be excluded from the selection window when sending the second data, the terminal device may exclude the first resource set from the selection window to obtain the candidate resource.

And S63, the terminal equipment sends the second data on the candidate resource.

When the terminal device transmits the second data on the candidate resource, the terminal device may select a transmission resource required for transmitting the second data on the candidate resource, and then transmit the second data on the determined transmission resource.

The transmission resource selected by the terminal device is different according to the type of the second data. In this embodiment, the terminal device may determine the first parameter according to the type of the second data, and then determine the transmission resource from the candidate resources according to the first parameter.

As one implementation, the first parameter may include a first probability and a second probability. The first probability may be a probability of continuing to transmit the first type of data using the existing resources, and the second probability may be a probability of continuing to transmit the second type of data using the existing resources.

For example, the embodiment of the present application may configure a pair of probabilities { P1, P2}, where P1 corresponds to a first type of data and P2 corresponds to a second type of data. The first type of data continues to use existing resources as per P1, with (1-P1) to reselect resources or trigger the selection of random resources. The first type of data continues to use existing resources as per P2, with (1-P2) to reselect resources or trigger the selection of random resources.

As another implementation, the first parameter may include a first threshold and a second threshold. The first threshold is used to determine a proportion of candidate resources for transmitting the first type of data to total resources in the selection window, and the second threshold is used to determine a proportion of candidate resources for transmitting the second type of data to total resources in the selection window.

For example, when the selected candidate resource is smaller than the resources of a certain number of selection windows, the embodiment of the present application may configure a set of parameters { Th1, Th2}, respectively. For the first type of data, Th 1-20% may be configured, and for the second type of data, Th 2-40% may be configured. This is because for the second type of data, the selected resource is more random or uncertain, and more candidate resources are needed for further sorting optimization selection, so the threshold set for the second type of data is higher. In some embodiments, the candidate resources may be selected based on different thresholds for resources that have occurred for the second type of data and for resources that have occurred for the first type of data.

As yet another implementation, the first parameter may include a third threshold and a fourth threshold. The third threshold is used for the first type of data to determine a signal quality threshold for the first set of resources and the fourth threshold is used for the second type of data to determine a signal quality threshold for the first set of resources.

For example, in the embodiment of the present application, different thresholds for signal quality may be configured for the resource where the second type of data occurs and the resource where the first type of data occurs. For example, the exclusion threshold is lower for data of the first type and higher for data of the second type.

As yet another implementation, the first parameter may include a fifth threshold and a sixth threshold. The fifth threshold is used for the first type of data to increase the threshold for signal quality of the candidate resource. The sixth threshold is used for the second type of data to increase the threshold for the signal quality of the candidate resource.

For example, when the resources are insufficient, i.e., the resources are below the first threshold and the second threshold, different values for adjusting the signal quality threshold may be configured for the first type of data and the second type of data. For example, 3dB is configured for the first type of data and 6dB is configured for the second type of data.

In some embodiments, the present application may divide the detection resources within the selection window into 2 sets, where the 2 sets are S and S2. Wherein the SI is a set of determined available resources, which may be a set of unused and occupied resources, where unused refers to resources reserved for the first type of data and the second type of data and resources explicitly released for the second type of data; the occupied resource refers to a resource of which the detected signal quality of the PSSCH is lower than a preset threshold. S2 may be a resource that was used by the second type of data and for which the signal quality is below a threshold. Therefore, the deterministic unused resources can be selected first, and then the resources are selected from the non-deterministic resources according to a certain rule, so that the possibility of transmission collision can be reduced by the selected resources.

For example, if S1 is greater than a certain percentage, e.g., 20%, of the candidate resources, the terminal device may directly select transmission resources in S1. Otherwise, for example, if S1 is smaller than a preset threshold, all resources are selected from S1, and then the resource with the lowest signal quality is selected from S2 to obtain the candidate resource.

In the embodiments provided in the present application, the method provided in the embodiments of the present application is introduced from the perspective of the terminal device. In order to implement the functions in the method provided by the embodiment of the present application, the terminal device may include a hardware structure and/or a software module, and implement the functions in the form of a hardware structure, a software module, or a hardware structure and a software module. Whether any of the above-described functions is implemented as a hardware structure, a software module, or a hardware structure plus a software module depends upon the particular application and design constraints imposed on the technical solution.

Fig. 10 shows a schematic structural diagram of a communication apparatus 1000. The communication apparatus 1000 may be a first device, for example, a terminal device may implement the function of the terminal device in the method provided by the embodiment of the present application; the communication apparatus 1000 may also be an apparatus capable of supporting a terminal device to implement the corresponding functions in the method provided in the embodiment of the present application. The communication device 1000 may be a hardware structure, a software module, or a hardware structure plus a software module. The communication apparatus 1000 may be implemented by a chip system. In the embodiment of the present application, the chip system may be composed of a chip, and may also include a chip and other discrete devices.

The communication device 1000 may include a processing unit 1001 and a transceiving unit 1002.

The processing unit 1001 may be used to perform steps S61 and S62 in the embodiment shown in fig. 6, and/or other processes for supporting the techniques described herein.

The transceiver 1002 is used for the communication device 1000 to communicate with other modules, and may be a circuit, a device, an interface, a bus, a software module, a transceiver, or any other device capable of implementing communication.

The transceiving unit 1002 may be configured to perform step S63 in the embodiment illustrated in fig. 6 and/or other processes for supporting the techniques described herein.

All relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again.

Fig. 11 shows a communication apparatus 1100 provided in this embodiment of the present application, where the communication apparatus 1100 may be a first device, for example, a terminal device, and is capable of implementing a function of the terminal device in the method provided in this embodiment of the present application; the communication apparatus 1100 may also be an apparatus capable of supporting a terminal device to implement the corresponding functions in the method provided in the embodiment of the present application. The communication device 1100 may be a chip system. In the embodiment of the present application, the chip system may be composed of a chip, and may also include a chip and other discrete devices.

In terms of hardware implementation, the transceiver 1002 may be a transceiver, and the transceiver is integrated in the communication device 1100 to form the communication interface 1110.

The communication apparatus 1100 includes at least one processor 1120 for implementing or supporting the communication apparatus 1100 to implement the functions of the terminal device in the method provided by the embodiment of the present application. Illustratively, the processor 1120 may be configured to determine a first set of resources according to first control information and/or first data detected in the listening window, the first set of resources being resources that need to be excluded from the selection window, the first control information indicating a type of the first data; determining the sending resource from a candidate resource set, where the candidate resource set includes resources of the selection window except for the first resource set, which is specifically referred to in the detailed description of the method example and is not described herein again.

The communications device 1100 may also include at least one memory 1130 for storing program instructions and/or data. A memory 1130 is coupled to the processor 1120. The coupling in the embodiments of the present application is an indirect coupling or a communication connection between devices, units or modules, and may be an electrical, mechanical or other form for information interaction between the devices, units or modules. The processor 1120 may operate in conjunction with the memory 1130. Processor 1120 may execute program instructions stored in memory 1130. At least one of the at least one memory may be included in the processor.

The communications apparatus 1100 can also include a communication interface 1110 for communicating with other devices over a transmission medium such that the apparatus used in the apparatus 1100 can communicate with other devices.

Processor 1120 can transceive data using communication interface 1110. The communication interface 1110 may specifically be a transceiver.

The specific connection medium among the communication interface 1110, the processor 1120, and the memory 1130 is not limited in the embodiments of the present application. In the embodiment of the present application, the memory 1130, the processor 1120 and the communication interface 1110 are connected by the bus 1140 in fig. 11, the bus is represented by a thick line in fig. 11, and the connection manner between other components is merely illustrative and not limited. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 11, but this is not intended to represent only one bus or type of bus.

In the present embodiment, the processor 1120 can be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, and can implement or execute the methods, steps, and logic blocks disclosed in the present embodiment. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in a processor.

In the embodiment of the present application, the memory 1130 may be a non-volatile memory, such as a Hard Disk Drive (HDD) or a solid-state drive (SSD), and may also be a volatile memory (RAM), for example. The memory is 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, but is not limited to such. The memory in the embodiments of the present application may also be circuitry or any other device capable of performing a storage function for storing program instructions and/or data.

The communication device in the above embodiments may be a terminal or a circuit, or may be a chip applied to a terminal or other combined device or component having the above terminal function. When the device is a terminal, the transceiving unit may be a transceiver, and may include an antenna, a radio frequency circuit, and the like, and the processing module may be a processor, for example: a Central Processing Unit (CPU). When the device is a component having the above terminal function, the transceiver unit may be a radio frequency unit, and the processing module may be a processor. When the apparatus is a chip system, the transceiver unit may be an input/output interface of the chip system, and the processing module may be a processor of the chip system.

Fig. 12 shows a simplified schematic of a communication device. For ease of understanding and illustration, in fig. 12, the communication device is exemplified by a cellular phone. As shown in fig. 12, the communication device includes a processor, a memory, a radio frequency circuit, an antenna, and an input-output device. The processor is mainly used for processing a communication protocol and communication data, controlling the communication device, executing a software program, processing data of the software program, and the like. The memory is used primarily for storing software programs and data. The radio frequency circuit is mainly used for converting baseband signals and radio frequency signals and processing the 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 used primarily for receiving data input by a user and for outputting data to the user. It should be noted that some kinds of communication devices may not have input/output devices.

When data needs to be sent, the processor performs baseband processing on the data to be sent and outputs baseband signals to the radio frequency circuit, and the radio frequency circuit performs radio frequency processing on the baseband signals and sends the radio frequency signals to the outside in the form of electromagnetic waves through the antenna. When data is transmitted to the communication device, the radio frequency circuit receives radio frequency signals through the antenna, converts the radio frequency signals into baseband signals and outputs the baseband signals to the processor, and the processor converts the baseband signals into the data and processes the data. For ease of illustration, only one memory and processor are shown in FIG. 12. In an actual communication device product, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or a storage device, etc. The memory may be provided independently of the processor, or may be integrated with the processor, which is not limited in this embodiment.

In the embodiment of the present application, the antenna and the radio frequency circuit having the transceiving function may be regarded as a transceiving unit of the communication device, and the processor having the processing function may be regarded as a processing unit of the communication device. As shown in fig. 12, the communication device includes a transceiving unit 1210 and a processing unit 1220. A transceiver unit may also be referred to as a transceiver, a transceiving device, etc. A processing unit may also be referred to as a processor, a processing board, a processing module, a processing device, or the like. Optionally, a device in the transceiver unit 1210 for implementing a receiving function may be regarded as a receiving unit, and a device in the transceiver unit 1210 for implementing a transmitting function may be regarded as a transmitting unit, that is, the transceiver unit 1210 includes a receiving unit and a transmitting unit. A transceiver unit may also sometimes be referred to as a transceiver, transceiving circuitry, or the like. A receiving unit may also be referred to as a receiver, a receiving circuit, or the like. A transmitting unit may also sometimes be referred to as a transmitter, or a transmitting circuit, etc.

It should be understood that the transceiver unit 1210 is configured to perform the transmitting operation and the receiving operation on the communication apparatus side in the above method embodiments, and the processing unit 1220 is configured to perform other operations besides the transceiving operation on the communication apparatus in the above method embodiments.

For example, in one implementation, the transceiver unit 1210 may be configured to perform step S63 in the embodiment shown in fig. 6 and/or other processes for supporting the techniques described herein. A processing unit 1220 for performing steps S61 and S62 in the embodiment shown in FIG. 6, and/or other processes for supporting the techniques described herein.

When the communication device is a chip, the chip includes a transceiver unit and a processing unit. The transceiver unit can be an input/output circuit and a communication interface; the processing unit is a processor or a microprocessor or an integrated circuit integrated on the chip.

In this embodiment, reference may be made to the apparatus shown in fig. 13. As an example, the device may perform functions similar to processing unit 1120 in FIG. 11. In fig. 13, the apparatus includes a processor 1310, a transmit data processor 1320, and a receive data processor 1230. The processing unit 701 or the processing unit 801 in the above embodiments may be the processor 1310 in fig. 13, and perform corresponding functions. The transceiving unit 702 or the transceiving unit 802 in the above embodiments may be the transmission data processor 1320 and/or the reception data processor 1330 in fig. 13. Although fig. 13 shows a channel encoder and a channel decoder, it is understood that these blocks are not limitative and only illustrative to the present embodiment.

Fig. 14 shows another form of the present embodiment. The terminal apparatus 1400 includes modules such as a modulation subsystem, a central processing subsystem, and peripheral subsystems. The terminal device in this embodiment may serve as a modulation subsystem therein. In particular, the modulation subsystem may include a processor 1403, an interface 1404. Wherein the processor 1403 completes the functions of the processing unit 1001, and the interface 1404 completes the functions of the transceiving unit 1002. As another variation, the modulation subsystem comprises a memory 1406, a processor 1403, and a program stored on the memory 1406 and operable on the processor, and the processor 1403, when executing the program, implements the method of the first terminal device or the second terminal device in the above method embodiments. It should be noted that the memory 1406 may be non-volatile or volatile, and may be located within the modulation subsystem or within the processing device 1400, as long as the memory 1406 is connected to the processor 1403.

Also provided in an embodiment of the present application is a computer-readable storage medium, which includes instructions that, when executed on a computer, cause the computer to perform the method performed by the first device in fig. 6.

Also provided in an embodiment of the present application is a computer program product including instructions that, when executed on a computer, cause the computer to perform the method performed by the first device in fig. 6.

The embodiment of the present application provides a chip system, where the chip system includes a processor and may further include a memory, and is configured to implement the function of the first device in the foregoing method. The chip system may be formed by a chip, and may also include a chip and other discrete devices.

The method provided by the embodiment of the present application may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, 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 loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the invention to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, a network appliance, a user device, or other programmable apparatus. The computer instructions may be stored in, or transmitted from, a computer-readable storage medium to another computer-readable storage medium, e.g., from one website, computer, server, or data center, over a wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL), for short) or wireless (e.g., infrared, wireless, microwave, etc.) network, 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 integrated servers, data centers, etc., the available medium may be magnetic medium (e.g., floppy disk, hard disk, magnetic tape), optical medium (e.g., digital video disc (digital video disc, DVD for short), or a semiconductor medium (e.g., SSD).

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

A method of communication, comprising:

the method comprises the steps that a first device determines a first resource set according to first control information and/or first data detected in a listening window, wherein the first resource set is a resource needing to be excluded from a selection window, and the first control information is used for indicating the type of the first data;

the first device determining transmission resources from a set of candidate resources, the set of candidate resources including resources of the selection window other than the first set of resources;

the first device transmits second data on the transmission resource.
The method of claim 1, wherein the first device determining the first set of resources based on the first control information and/or the first data detected during the listening window comprises:

the first device determines that the first resource set includes a first reserved resource and/or a second reserved resource, where the first reserved resource is a reserved resource indicated by the first control information, the signal quality of the first control information is greater than a first threshold, the second reserved resource is a resource reserved for the second data, and the signal quality of the second data is greater than a second threshold.
The method of claim 1 or 2, wherein the first device determines transmission resources from a set of candidate resources, comprising:

the first device determines the transmission period from the candidate resource set according to the type of the first data and/or the type of the second data; wherein the type comprises a first type or a second type;

the first type is used for indicating that the data is periodically transmitted data, and the second type is used for indicating that the data is non-periodically transmitted data; alternatively, the first and second electrodes may be,

the first type is used for indicating that data to be sent are still time-sequentially sent after the data are sent, and the second type is used for indicating that the data to be sent are not time-sequentially sent after the data are sent; alternatively, the first and second electrodes may be,

the first type is used for indicating that the control information corresponding to the data indicates reservation, and the second type is used for indicating that the control information corresponding to the data does not indicate reservation; alternatively, the first and second electrodes may be,

the first type is used for indicating that the control information corresponding to the data indicates reservation for other data, and the second type is used for indicating that the control information corresponding to the data does not indicate reservation or indicates reservation among different retransmissions of the same data; alternatively, the first and second electrodes may be,

the first type and the second type are both used to indicate a priority of data, and the priority of the first data of the first type is lower than the priority of the first data of the second type.
The method according to any of claims 1-3, wherein reserved resources indicated by the first control information are located in the selection window, and wherein the first set of resources comprises resources occupied by the reserved resources and/or the first data.
The method of claim 4,

the initial transmission of the first data is in the listening window, and the reserved resources are used for the retransmission of the first data; alternatively, the first and second electrodes may be,

the initial transmission and the retransmission of the first data are in the listening window, and the reserved resources are used for the initial transmission and/or the retransmission of the third data.
The method of any of claims 3-5, wherein the type of the first data is the second type, the first set of resources includes a third resource, the third resource being a frequency domain resource of the first data detected in the listening window, a signal quality of the third resource being greater than a third threshold.
[ correction 04.02.2020 based on rules 91]
The method of any one of claims 1-6, further comprising:

the first device determines an exclusion window from the selection window;

the first device determines the first set of resources from the exclusion window.
[ correction 04.02.2020 based on rules 91]
The method of claim 7, wherein the first device determines an exclusion window from the selection window, comprising:

the first device determines the exclusion window from the selection windows based on at least one of:

the priority of the second data, the type of the second data, the service attribute of the second data, the transmission mode of the second data and the first signaling; the transmission mode of the first data comprises a unicast mode, a multicast mode or a broadcast mode, and the first signaling is indicated by the network equipment or preconfigured.
[ correction 04.02.2020 based on rules 91]
The method of claim 8, wherein the first device determines an exclusion window from the selection window, comprising:

the first device determines the exclusion window from the selection window according to the type of the second data; wherein the content of the first and second substances,

the type of the second data is the first type, and the time length of the exclusion window is M sending periods of the second data, wherein M is a positive integer configured, predefined or preconfigured by signaling; alternatively, the first and second electrodes may be,

the type of the first data is the second type, the time length of the exclusion window is the time length required for sending the second data to be initially transmitted and retransmitted, wherein N is a positive integer configured, predefined or preconfigured for signaling.
[ correction 04.02.2020 based on rules 91]
The method of claim 8 or 9, wherein the first device determines an exclusion window in the selection window, comprising:

the first equipment determines the exclusion window from the selection window according to the service attribute of the second data; wherein, the sizes of the exclusion windows corresponding to different service attributes are different.
The method of any of claims 2-11, wherein the method further comprises:

the first device determines a second resource set according to the first control information and/or the first data detected in the listening window, wherein the second resource set is a set of resources which are not detected in the listening window;

the first device determines the first set of resources from the second set of resources.
The method of claim 11, wherein the first device determining the first set of resources from the second set of resources comprises:

and the first equipment determines the resources needing to be excluded in the exclusion window according to the time slot position of a second resource set and a first period, wherein the first period is a period of first type data possibly sent on the second resource set.
The method of any one of claims 1-12, wherein the first device determines transmission resources from a set of candidate resources, comprising:

the first equipment determines a first parameter according to the type of the second data;

the first device determines the transmission resource from the set of candidate resources according to the first parameter.
[ correction 04.02.2020 based on rules 91]
The method of claim 13, wherein the first parameter comprises:

a first probability and a second probability, wherein the first probability is the probability of continuously using the existing resources to transmit the data of the first type, and the second probability is the probability of continuously using the existing resources to transmit the data of the second type; alternatively, the first and second electrodes may be,

a third threshold for determining resources from the set of candidate resources for transmitting a first type of data and a fourth threshold for determining resources from the set of candidate resources for transmitting a second type of data; or a fifth threshold and a sixth threshold, the fifth threshold being used for determining a signal quality threshold for the first set of resources for the first type of data, the sixth threshold being used for determining a signal quality threshold for the first set of resources for the second type of data.
[ correction 04.02.2020 based on rules 91]
The method according to any of claims 1-14, wherein the first device determining the first set of resources based on the first control information and/or the second data listened to in the listening window comprises:

the first device determines a first candidate resource set and a second candidate resource set from the selection window, wherein the first candidate resource set S1 is a set of determined available resources, and the second candidate resource set S2 is a set of resources occupied by a second type of data in the selection window corresponding to the listening window;

when the first candidate set of resources is less than a seventh threshold, the first device determines the first set of resources from the second candidate set of resources.
A communication apparatus comprising a processing unit and a transceiving unit, wherein:

the processing unit is configured to determine a first resource set according to first control information and/or first data detected in a listening window, where the first resource set is a resource that needs to be excluded from a selection window, and the first control information is used to indicate a type of the first data; determining transmission resources from a candidate set of resources, the candidate set of resources including resources of the selection window other than the first set of resources;

the transceiving unit is configured to send second data on the sending resource under the control of the processing unit.
The communications apparatus as claimed in claim 16, wherein the processing unit is specifically configured to:

determining that the first resource set comprises a first reserved resource and/or a second reserved resource, wherein the first reserved resource is a reserved resource indicated by the first control information, the signal quality of the first control information is greater than a first threshold, the second reserved resource is a reserved resource of the second data, and the signal quality of the second data is greater than a second threshold.
The communication apparatus according to claim 16 or 17, wherein the processing unit is specifically configured to:

determining the transmission period from the candidate resource set according to the type of the first data and/or the type of the second data; wherein the type comprises a first type or a second type;

the first type is used for indicating that the data is periodically transmitted data, and the second type is used for indicating that the data is non-periodically transmitted data; alternatively, the first and second electrodes may be,

the first type is used for indicating that data to be sent are still time-sequentially sent after the data are sent, and the second type is used for indicating that the data to be sent are not time-sequentially sent after the data are sent; alternatively, the first and second electrodes may be,

the first type is used for indicating that the control information corresponding to the data indicates reservation, and the second type is used for indicating that the control information corresponding to the data does not indicate reservation; alternatively, the first and second electrodes may be,

the first type is used for indicating that the control information corresponding to the data indicates reservation for other data, and the second type is used for indicating that the control information corresponding to the data does not indicate reservation or indicates reservation among different retransmissions of the same data; alternatively, the first and second electrodes may be,

the first type and the second type are both used to indicate a priority of data, and the priority of the first data of the first type is lower than the priority of the first data of the second type.
The communications apparatus of any one of claims 16-18, wherein reserved resources indicated by the first control information are located in the selection window, and wherein the first set of resources comprises resources occupied by the reserved resources and/or the first data.
The communications apparatus of claim 19,

the initial transmission of the first data is in the listening window, and the reserved resources are used for the retransmission of the first data; alternatively, the first and second electrodes may be,

the initial transmission and the retransmission of the first data are in the listening window, and the reserved resources are used for the initial transmission and/or the retransmission of the third data.
The communications apparatus of any of claims 18-20, wherein the type of the first data is the second type, the first set of resources includes a third resource, the third resource being a frequency domain resource of the first data detected in the listening window, a signal quality of the third resource being greater than a third threshold.
[ correction 04.02.2020 based on rules 91]
The communication device of any of claims 13-21, wherein the processing unit is further to:

determining an exclusion window from the selection window;

determining the first set of resources from the exclusion window.
[ correction 04.02.2020 based on rules 91]
The communications apparatus as claimed in claim 22, wherein said processing unit is specifically configured to:

determining the exclusion window from the selection window based on at least one of:

the priority of the second data, the type of the second data, the service attribute of the second data, the transmission mode of the second data and the first signaling; the transmission mode of the first data comprises a unicast mode, a multicast mode or a broadcast mode, and the first signaling is indicated by the network equipment or preconfigured.
[ correction 04.02.2020 based on rules 91]
The communications apparatus of claim 23, wherein the first device determines an exclusion window in the selection window, comprising:

the first equipment determines the exclusion window from the selection window according to the service attribute of the second data; wherein, the sizes of the exclusion windows corresponding to different service attributes are different.
The communications apparatus as claimed in any of claims 2-24, wherein the processing unit is further configured to:

determining a second resource set according to the first control information and/or the first data detected in the listening window, wherein the second resource set is a set of resources which are not detected in the listening window;

determining the first set of resources from the second set of resources.
The communications apparatus as claimed in claim 25, wherein said processing unit is specifically configured to:

and determining the resources needing to be excluded in the exclusion window according to the time slot position of a second resource set and a first period, wherein the first period is a period of first type data possibly sent on the second resource set.
The communication device according to any of claims 1 to 26, wherein the processing unit is specifically configured to:

determining a first parameter according to the type of the second data;

determining the transmission resource from the set of candidate resources according to the first parameter.
[ correction 04.02.2020 based on rules 91]
The method of any one of claims 1-27, wherein the processing unit is specifically configured to:

determining a first candidate resource set and a second candidate resource set from the selection window, wherein the first candidate resource set S1 is a set of determined available resources, and the second candidate resource set S2 is a set of resources occupied by a second type of data corresponding to the listening window in the selection window;

determining the first set of resources from the second set of candidate resources when the first set of candidate resources is less than a seventh threshold.
[ claim 91 to correct 04.02.2020] A communication device comprising a processor coupled to a memory for storing a computer program, the processor being configured to execute the computer program stored in the memory such that the device implements a method according to any one of claims 1 to 15.
[ claim 91 ] correction 04.02.2020 according to rules 91 ] a computer-readable storage medium storing a computer program which, when executed by a computer, causes the computer to execute the method according to any one of claims 1 to 15.