Lateral link measurement method and device, equipment and storage medium

Abstract

The invention discloses a sidelink measurement method and device, equipment and a storage medium, and relates to the technical field of communication. The method comprises measuring a channel quality parameter of a sidelink according to a spatial transmission filter (510). The channel quality parameters of the sidelink are measured according to the spatial transmission filter, so that the spatial transmission filter used by the terminal equipment for receiving or sending is combined with the measurement of the channel quality parameters, such as CBR or CR, of the sidelink; the measurement of channel quality parameters such as CBR or CR is more accurate under high-frequency sidewalk communication, and the accuracy and efficiency of system congestion control are improved.

Description

Sidelink measurement method, device, equipment and storage medium Technical Field

[0001] The embodiments of the present application relate to the field of communication technology, and in particular to a sidelink measurement method, apparatus, device, and storage medium. Background Art

[0002] In sidelink (SL) communications, channel quality parameters such as CBR (Channel Busy Ratio) and CR (Channel Occupancy Ratio) are introduced to support congestion control. With the evolution of technology, SL communication terminals can transmit and receive signals using beams (also known as spatial transmission filters). In this scenario, how terminal devices measure sidelink channel quality parameters requires further research.

[0003] Summary of the Invention

[0004] The present invention provides a sidelink measurement method, apparatus, device, and storage medium. The technical solution is as follows:

[0005] According to one aspect of an embodiment of the present application, a sidelink measurement method is provided, the method being performed by a terminal device, the method including:

[0006] The channel quality parameters of the sidelink are measured based on the spatial transmission filter.

[0007] According to one aspect of an embodiment of the present application, a sidelink measurement device is provided, the device comprising:

[0008] The processing module is used to measure the channel quality parameter of the side link according to the spatial domain transmission filter.

[0009] According to one aspect of an embodiment of the present application, a terminal device is provided, comprising a processor and a memory, wherein a computer program is stored in the memory, and the processor executes the computer program to implement the above-mentioned sidelink measurement method.

[0010] According to one aspect of an embodiment of the present application, a computer-readable storage medium is provided, in which a computer program is stored. The computer program is configured to be executed by a processor to implement the above-mentioned sidelink measurement method.

[0011] According to one aspect of an embodiment of the present application, a chip is provided, which includes a programmable logic circuit and / or program instructions, and when the chip is running, is used to implement the above-mentioned sidelink measurement method.

[0012] According to one aspect of an embodiment of the present application, a computer program product is provided, which includes computer instructions stored in a computer-readable storage medium. A processor reads and executes the computer instructions from the computer-readable storage medium to implement the above-mentioned sidelink measurement method.

[0013] The technical solutions provided by the embodiments of the present application may have the following beneficial effects:

[0014] By measuring the channel quality parameters of the sidelink based on the spatial transmission filter, the spatial transmission filter used by the terminal device for receiving or sending is combined with the measurement of channel quality parameters such as CBR or CR of the sidelink, so that the measurement of channel quality parameters such as CBR or CR is more accurate under high-frequency sidelink communication, thereby improving the accuracy and efficiency of system congestion control. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] FIG1 is a schematic diagram of a network architecture provided by an embodiment of the present application;

[0016] FIG2 is a schematic diagram of a physical layer structure of SL communication provided by an embodiment of the present application;

[0017] FIG3 is a schematic diagram of a simple example of UE measuring CBR / CR provided by an embodiment of the present application;

[0018] FIG4 is a schematic diagram of a system without and with beamforming provided by one embodiment of the present application;

[0019] FIG5 is a flow chart of a sidelink measurement method provided by one embodiment of the present application;

[0020] FIG6 is a schematic diagram of a simple example of a terminal device measuring CBR according to an embodiment of the present application;

[0021] FIG7 is a schematic diagram of a simple example of a terminal device measuring CBR provided by another embodiment of the present application;

[0022] FIG8 is a schematic diagram of a simple example of a terminal device measuring CR according to an embodiment of the present application;

[0023] FIG9 is a block diagram of a sidelink measurement device provided by one embodiment of the present application;

[0024] FIG10 is a schematic structural diagram of a terminal device provided in one embodiment of the present application. DETAILED DESCRIPTION

[0025] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0026] The network architecture and business scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. A person skilled in the art will appreciate that, with the evolution of the network architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of the present application are equally applicable to similar technical problems.

[0027] Please refer to Figure 1, which shows a schematic diagram of a network architecture provided by an embodiment of the present application. The network architecture may include: a core network 11, an access network 12, and a terminal device 13.

[0028] The core network 11 includes several core network devices. The functions of the core network devices are mainly to provide user connections, user management, and service carrying, and to provide an interface to the external network as a bearer network. For example, the core network of a 5G (5th Generation) NR (New Radio) system may include devices such as an AMF (Access and Mobility Management Function) entity, a UPF (User Plane Function) entity, and an SMF (Session Management Function) entity.

[0029] The access network 12 includes several access network devices 14. The access network in the 5G NR system can be called NG-RAN (New Generation-Radio Access Network). The access network device 14 is a device deployed in the access network 12 to provide wireless communication functions for the terminal device 13. The access network device 14 may include various forms of macro base stations, micro base stations, relay stations, access points, etc. In systems using different wireless access technologies, the names of devices with access network device functions may be different. For example, in the 5G NR system, they are called gNodeB or gNB. With the evolution of communication technology, the name of "access network device" may change. For the convenience of description, in the embodiments of the present application, the above-mentioned devices that provide wireless communication functions for the terminal device 13 are collectively referred to as access network devices.

[0030] The number of terminal devices 13 is usually multiple, and one or more terminal devices 13 can be distributed in the cell managed by each access network device 14. The terminal device 13 may include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to a wireless modem, as well as various forms of user equipment, mobile stations (MS), etc. For the convenience of description, the devices mentioned above are collectively referred to as terminal devices. The access network device 14 and the core network device communicate with each other through some air technology, such as the NG interface in the 5G NR system. The access network device 14 and the terminal device 13 communicate with each other through some air technology, such as the Uu interface. In the embodiments of the present application, the terminal device and UE (User Equipment) express the same meaning, and the two are often used interchangeably, but those skilled in the art can understand their meaning.

[0031] Terminal devices 13 and terminal devices 13 (for example, vehicle-mounted devices and other devices (such as other vehicle-mounted devices, mobile phones, RSU (Road Side Unit, road test unit), etc.)) can communicate with each other through a direct communication interface (such as a PC5 interface). Accordingly, the communication link established based on the direct communication interface can be called a direct link or SL. SL transmission is the direct communication and data transmission between terminal devices through a side link. Unlike traditional cellular systems where communication data is received or sent through access network equipment, SL transmission has the characteristics of short delay and low overhead, and is suitable for communication between two terminal devices that are geographically close (such as vehicle-mounted devices and other peripheral devices that are geographically close). It should be noted that in Figure 1, only vehicle-to-vehicle communication in the V2X (vehicle to everything) scenario is used as an example. SL technology can be applied to scenarios where direct communication is carried out between various terminal devices. In other words, the terminal device in this application refers to any device that communicates using SL technology.

[0032] The "5G NR system" in the embodiments of this application may also be referred to as a 5G system or an NR system, but those skilled in the art will understand its meaning. The technical solutions described in the embodiments of this application can be applied to the 5G NR system and can also be applied to subsequent evolution systems of the 5G NR system.

[0033] Before introducing the technical solutions of this application, we first introduce and explain some of the background technologies involved in this application. The following related technologies can be combined with the technical solutions of the embodiments of this application as optional solutions, and they all fall within the scope of protection of the embodiments of this application. The embodiments of this application include at least some of the following contents.

[0034] 1.SL transmission

[0035] Regarding SL transmission, 3GPP defines two transmission modes: Mode A and Mode B.

[0036] Mode A: The transmission resources of the terminal device are allocated by the access network device (such as a base station). The terminal device transmits communication data on the side link according to the transmission resources allocated by the access network device. The access network device can allocate transmission resources for a single transmission to the terminal device, or allocate transmission resources for a semi-static transmission to the terminal device.

[0037] Mode B: The terminal device selects a transmission resource from the resource pool to transmit communication data. Specifically, the terminal device can select a transmission resource from the resource pool by listening or by random selection.

[0038] 2.NR V2X physical layer structure

[0039] The physical layer structure of SL communication in the NR V2X system is shown in Figure 2. The first symbol in the time slot shown in Figure 2 is an AGC (Automatic Gain Control) symbol. When the SL UE receives, the received power can be adjusted in this symbol to a power suitable for demodulation. When the SL UE transmits, the content of the symbol following the AGC symbol is repeated on the AGC symbol. In Figure 2, the PSCCH (Physical Sidelink Control Channel) is used to carry the first sidelink control information, and the PSSCH (Physical Sidelink Shared Channel) is used to carry data and the second sidelink control information. The PSCCH and PSSCH are transmitted in the same time slot. The first sidelink control information and the second sidelink control information can be two sidelink control information with different functions. For example, the first sidelink control information is carried in the PSCCH and mainly contains fields related to resource sensing, which facilitates resource exclusion and resource selection after decoding by other terminal devices. In addition to data, the PSSCH also carries secondary sidelink control information, primarily including fields related to data demodulation, to facilitate demodulation of the data in the PSSCH by other terminal devices. Within a given time slot, symbols corresponding to the PSFCH may also exist. The PSFCH is used to transmit HARQ feedback information. Depending on the resource pool configuration, PSFCH symbols may appear once every 1, 2, or 4 time slots. When no PSFCH symbols exist in a time slot, for example, the GAP symbol between the PSSCH and PSFCH in Figure 2, the AGC used for PSFCH reception, and the PSFCH symbols are all used to carry the PSSCH. Typically, the last symbol in a time slot is the GP (Guard Period) symbol, or GAP. In other words, the symbol following the last PSSCH or PSFCH symbol is a GP symbol. SL UEs perform transceiver switching within GP symbols and do not transmit. When PSFCH resources exist in a time slot, GP symbols also exist between the PSSCH and PSFCH symbols. This is because the UE may transmit on PSSCH and receive on PSFCH, and GP symbols are also needed for transmission and reception conversion.

[0040] 3. CBR and CR measurements

[0041] CBR and CR are two basic measurement indicators used to support congestion control.

[0042] CBR is defined as the ratio of subchannels with SL RSSI (Received Signal Strength Indicator) above the configured threshold to the total number of subchannels in the resource pool within the CBR measurement window [n1-c, n1-1], where slot n1 is the slot in which the UE measures CBR, and c is equal to 100 or 100·2. μ time slots, μ is related to the subcarrier spacing. For example, the subcarrier spacings of 15kHz, 30kHz, 60kHz, and 120kHz correspond to μ of 0, 1, 2, and 3.

[0043] CR is defined as the ratio of the number of subchannels that the UE has used to send data within the range [n1-a, n1-1] and the number of subchannels included in the sidelink grant obtained within the range [n1, n1+b] to the total number of subchannels in the resource pool within the range [n1-a, n1+b]. CR can be calculated separately for different priority levels. Wherein, time slot n1 is the time slot in which the UE measures CR, a is a positive integer, and b is 0 or a positive integer. The values ​​of a and b are determined by the UE, but the following three conditions must be met:

[0044] 1) a + b + 1 = 1000 or 1000 2 μ time slots, μ is related to the subcarrier spacing. For example, the subcarrier spacings of 15kHz, 30kHz, 60kHz, and 120kHz correspond to μ of 0, 1, 2, and 3;

[0045] 2) b < (a + b + 1) / 2;

[0046] 3) n1+b does not exceed the last transmission resource of the sideline authorization corresponding to the current transmission;

[0047] Note: The smallest scheduling unit in the time domain of a resource pool is a time slot, and the smallest scheduling unit in the frequency domain is a subchannel. For example, the frequency domain width of a subchannel may be 10, 12, 15, 20, 25, 50, 75, or 100 PRBs (Physical Resource Blocks).

[0048] Figure 3 shows a simple example of a UE measuring CBR / CR. Assume that the resource pool used by the UE contains only two subchannels. All time slots in Figure 3 belong to the resource pool used by the UE, and the UE only occupies one subchannel for transmitting PSSCH and PSCCH. The subchannels in the sidelink grant used by the UE are v1, v2, v3, v4, v5, v6, and v7. When the UE is about to transmit data in resource v5, it measures the CR and CBR in time slots n2-N to determine whether to abandon transmission on subchannel v5. Time slot n2 can be the time slot in which the UE transmits data.

[0049] For CBR, in time slot [n2-Nc, n2-N-1], the SL RSSI measured by the UE on two subchannels y and u is greater than the configured threshold. Then the CBR is 2 divided by the total number of subchannels belonging to the resource pool used by the UE in time slot [n2-Nc, n2-N-1], or the CBR is 2 divided by the total number of subchannels belonging to the resource pool used by the UE in time slot [n2-Nc, n2-N-1] excluding the time slot used by the UE to send.

[0050] For CR, assuming that a and b are positive integers, the subchannels that the UE has used to send data in [n2-Na,n2-N-1] are v1, v2, and v3, and the subchannels for which the UE has obtained sidelink authorization in [n2-N,n2-N+b] are v5 and v6, then CR is 5 divided by the total number of subchannels belonging to the resource pool used by the UE in the time slot [n2-Na,n2-N+b], or CR is 5 divided by the total number of subchannels belonging to the resource pool used by the UE in the time slot [n2-Na,n2-N+b] excluding the time slot used by the UE for transmission.

[0051] For CR, assuming that a is a positive integer and b is 0, that is, n2-N+b is n2-N, and the subchannels that the UE has used to send data in [n2-Na,n2-N-1] are v1, v2, and v3, then CR is 3 divided by the total number of subchannels belonging to the resource pool used by the UE in the time slot [n2-Na,n2-N], or CR is 3 divided by the total number of subchannels belonging to the resource pool used by the UE in the time slot [n2-Na,n2-N] excluding the time slot used by the UE for transmission.

[0052] CR can be calculated separately for different priorities.

[0053] Assume that a and b are positive integers, the subchannels that the UE has used to send data in [n2-Na,n2-N-1] are v1, v2, and v3. For a certain priority level f, the UE sends data with priority f in subchannels v1 and v3. The subchannels for sidelink authorization obtained in [n2-N,n2-N+b] are v5 and v6. The UE assumes that the priority of data transmitted on v5 and v6 is f. Then the CR for priority f is 4 divided by the total number of subchannels belonging to the resource pool used by the UE in the time slot [n2-Na,n2-N+b], or the CR is 4 divided by the total number of subchannels belonging to the resource pool used by the UE in the time slot [n2-Na,n2-N+b] excluding the time slot used for UE transmission.

[0054] Assume that a is a positive integer and b=0, that is, n2-N+b is n2-N, the subchannels that the UE has used to send data in [n2-Na,n2-N-1] are v1, v2, and v3. For a certain priority level f, the UE sends data with priority level f in subchannels v1 and v3. Then the CR for priority level f is 2 divided by the total number of subchannels belonging to the resource pool used by the UE in the time slot [n2-Na,n2-N], or the CR is 2 divided by the total number of subchannels belonging to the resource pool used by the UE in the time slot [n2-Na,n2-N] excluding the time slot used for UE transmission.

[0055] The above N is related to the processing capability of the UE.

[0056] In addition, for the subchannels involved in the above-mentioned calculation of CR and CBR (such as subchannels v1, v2, v3, v4, v5, v6, v7, etc. in Figure 3 above), a subchannel can be understood as a time-frequency resource corresponding to a time unit (such as a time slot) in the time domain and a subchannel in the frequency domain (the subchannel refers to the smallest scheduling unit in the frequency domain, such as subchannel 1 and subchannel 2 shown in Figure 3). In other words, the subchannels involved in the above-mentioned calculation of CR and CBR do not refer to the smallest scheduling unit in the frequency domain, but to a time-frequency resource. In the following embodiments, please refer to the explanation here and will not be repeated.

[0057] 4. Multi-beam system

[0058] NR / 5G system design goals include wide-bandwidth communications in high-frequency bands (e.g., bands above 6 GHz). As the operating frequency increases, path loss increases during transmission, impacting the coverage capabilities of high-frequency systems. To effectively ensure high-band NR system coverage, an effective technical solution is to use massive antenna arrays (Massive MIMO) to form shaped beams with greater gain, overcome propagation loss, and ensure system coverage.

[0059] Millimeter-wave antenna arrays, due to their shorter wavelengths, smaller antenna array spacing, and smaller apertures, allow more physical antenna arrays to be integrated into a two-dimensional antenna array of limited size. At the same time, due to the limited size of millimeter-wave antenna arrays, digital beamforming cannot be used due to factors such as hardware complexity, cost, and power consumption. Instead, analog beamforming is typically used, which enhances network coverage while reducing device implementation complexity.

[0060] In typical existing 2G / 3G / 4G systems, a cell (sector) uses a wide beam to cover the entire cell. Therefore, at every moment, UEs within the cell's coverage area have the opportunity to obtain transmission resources allocated by the system.

[0061] The NR / 5G Multi-beam system uses different beams to cover the entire cell. That is, each beam covers a smaller area, and the effect of multiple beams covering the entire cell is achieved through time sweeping.

[0062] Figure 4 shows schematic diagrams of systems without and with beamforming. The left sub-figure (a) shows the traditional LTE and NR systems without beamforming, and the right sub-figure (b) shows the NR system with beamforming.

[0063] In the left sub-figure (a), the LTE / NR network side uses a wide beam to cover the entire cell, and terminal devices 1-5 can receive network signals at any time.

[0064] In contrast, in the right sub-figure (b), the network side uses narrower beams (such as beams 1-4 in the figure), and uses different beams at different times to cover different areas in the cell. For example, at time 1, the NR network side uses beam 1 to cover the area where terminal device 1 is located; at time 2, the NR network side uses beam 2 to cover the area where terminal device 2 is located; at time 3, the NR network side uses beam 3 to cover the area where terminal devices 3 and 4 are located; and at time 4, the NR network side uses beam 4 to cover the area where terminal device 5 is located.

[0065] In the right sub-figure (b), because the network uses narrower beams, the transmission energy can be more concentrated, thus covering a longer distance. At the same time, because the beams are narrow, each beam can only cover a part of the cell, so analog beamforming is "trading time for space."

[0066] Analog beamforming can be used not only in network equipment but also in terminal devices. Furthermore, analog beamforming can be used not only for signal transmission (called transmit beamforming) but also for signal reception (called receive beamforming).

[0067] Currently, issues related to SL systems operating at high frequencies are being discussed. When SL systems operate at high frequencies, beamforming is inevitably introduced, such as using a transmit beam for transmission or a receive beam for reception.

[0068] As described above, when measuring SL CBR and SL CR, within the measurement window, the terminal device performs omnidirectional reception in some time slots and uses beamforming for directional reception in others. Using beamforming for directional reception only measures the received power of signals from a specific direction, resulting in inaccurate SL RSSI measurements. Further research is needed to address the use of beamforming for measuring congestion control metrics such as SL CBR and SL CR.

[0069] In this application, the term "beam" is also referred to as a "spatial domain transmission filter," and the two have the same meaning. Accordingly, a "receive beam" is also referred to as a "spatial domain receive filter," a "receiver spatial domain filter," a "spatial domain transmission filter for reception," or other names, and a "transmit beam" is also referred to as a "spatial domain transmit filter," a "transmitter spatial domain filter," a "spatial domain transmission filter for transmission," or other names, and this application does not limit these terms.

[0070] In addition, in this application, a "time unit" can be a time slot, a subframe, or other time units, and this application does not limit this. For the "time unit" mentioned elsewhere in this article, please refer to this explanation and will not be repeated.

[0071] In addition, in the present application, "signal strength" may be RSSI. Of course, in some other embodiments, it may also be other parameters used to characterize signal quality, such as RSRP (Reference Signal Receiving Power), RSRQ (Reference Signal Receiving Quality), SINR (Signal to Interference plus Noise Ratio), etc., and the present application does not limit this. For example, "signal strength" is "RSSI" and "signal strength threshold" is "RSSI threshold". For another example, "signal strength" is "SL RSSI" and "signal strength threshold" is "SL RSSI threshold". For the "signal strength" mentioned elsewhere in this article, please refer to this explanation and will not be repeated.

[0072] The technical solution of this application will be introduced and explained through several embodiments below.

[0073] Please refer to Figure 5, which shows a flow chart of a sidelink measurement method provided by an embodiment of the present application. The method can be applied to the network architecture shown in Figure 1, for example, the method can be performed by a terminal device. The method may include the following steps 510:

[0074] Step 510: Measure the channel quality parameters of the sidelink according to the spatial transmission filter.

[0075] The channel quality parameters of the sidelink can be basic measurement indicators for supporting congestion control. In the embodiments of the present application, the channel quality parameters CBR and CR described above are mainly used as examples for description. Among them, CBR is used to reflect the congestion level of the resource pool, and CR is used to reflect the resource occupancy of the terminal device.

[0076] In some embodiments, the channel quality parameter includes a CBR, and the terminal device determines the CBR based on a signal strength threshold corresponding to a spatial transmission filter used for receiving the terminal device.

[0077] For the convenience of description, in some of the following introductions, the spatial transmission filter used by the terminal device for reception is called the spatial reception filter or reception beam.

[0078] In some embodiments, a correspondence exists between a spatial transmission filter used by a terminal device for reception and a signal strength threshold. The terminal device determines the signal strength threshold corresponding to the spatial transmission filter used by the terminal device for reception based on at least one set of correspondences; wherein the correspondence is a correspondence between the spatial transmission filter used for reception and the signal strength threshold.

[0079] Optionally, the above correspondence includes a correspondence between a spatial transmission filter and a signal strength threshold, that is, a spatial transmission filter corresponds to a signal strength threshold; optionally, different spatial transmission filters correspond to different signal strength thresholds.

[0080] Optionally, the above correspondence includes a correspondence between multiple spatial transmission filters and a signal strength threshold. That is, multiple spatial transmission filters can correspond to the same signal strength threshold. Exemplarily, all spatial transmission filters of the terminal device correspond to the same signal strength threshold.

[0081] Exemplarily, the spatial transmission filters used by the terminal device for reception include: receive beam 1, receive beam 2, receive beam 3, receive beam 4, and receive beam 5; receive beam 1 and receive beam 2 correspond to signal strength threshold 1, receive beam 3 and receive beam 4 correspond to signal strength threshold 2, and receive beam 5 corresponds to signal strength threshold 3. Signal strength threshold 1, signal strength threshold 2, and signal strength threshold 3 are mutually exclusive.

[0082] Exemplarily, the at least one set of corresponding relationships is configured by the network, or pre-configured, or pre-defined by a standard, or depends on the implementation of the terminal device.

[0083] Exemplarily, the at least one set of corresponding relationships is included in the resource pool configuration or SL BWP (Bandwidth Part) configuration.

[0084] In some embodiments, the terminal device determines the CBR based on the signal strength threshold corresponding to the spatial transmission filter used for its own reception, including: the terminal device determines the CBR in a first time unit based on the number of first subchannels and the number of second subchannels; wherein the number of first subchannels includes the number of subchannels whose signal strength measured in a first time period is greater than the signal strength threshold corresponding to the spatial transmission filter used for reception by the terminal device; the number of second subchannels is the number of subchannels belonging to the resource pool in the first time period, or the number of subchannels belonging to the resource pool in the first time period excluding the time unit used for transmission by the terminal device, and the first time period is located before the first time unit.

[0085] In some embodiments, in addition to including the number of subchannels whose signal strength measured in the first time period is greater than the signal strength threshold corresponding to the spatial transmission filter used by the terminal device for reception, the first number of subchannels may also include the number of subchannels whose signal strength measured in the first time period is greater than the configured signal strength threshold. For example, the terminal device receives in the first mode for some time units in the first time period and in the second mode for some time units; wherein the first mode is a mode of receiving using a spatial transmission filter, and the second mode is different from the first mode, such as the second mode is an omnidirectional reception mode, or the second mode is a mode of receiving using an omnidirectional spatial transmission filter, or the second mode is a mode of receiving without using a spatial transmission filter. In the above situation, the first number of subchannels may be the sum of the number of subchannels whose signal strength measured in the first time period is greater than the signal strength threshold corresponding to the spatial transmission filter used by the terminal device for reception (corresponding to the time unit in the first time period for reception using the first mode), and the number of subchannels whose signal strength measured in the first time period is greater than the configured signal strength threshold (corresponding to the time unit in the first time period for reception using the second mode). The above-configured signal strength threshold may be configured or pre-configured by the network.

[0086] Exemplarily, the CBR is equal to the number of first subchannels divided by the number of second subchannels.

[0087] Exemplarily, taking the first time unit as time slot n1, time slot n1 is the time slot in which the terminal device measures the CBR, and the first time period may be time slot [n1-c, n1-1], where c is a positive integer. Exemplarily, c can refer to the explanation in the above definition of CBR. The CBR measured in time slot n1 is the number of sub-channels in time slot [n1-c, n1-1] in which the SL RSSI measured by the terminal device is greater than the SL RSSI threshold divided by the number of sub-channels belonging to the resource pool, or divided by the number of sub-channels belonging to the resource pool excluding the time slot used by the terminal device for transmission. SL RSSI is measured for a certain sub-channel, and a sub-channel can be understood as a time-frequency resource corresponding to a time slot in the time domain and a sub-channel in the frequency domain. Optionally, for a certain sub-channel, the SL RSSI threshold is determined based on the receiving beam used to measure the SL RSSI, or in other words, the receiving beam used on the sub-channel for measuring the SL RSSI or in the time slot corresponding to the sub-channel, and the correspondence between the above-mentioned receiving beam and the SL RSSI threshold. For example, when the corresponding SL RSSI is measured on a subchannel within the time slot [n1-c, n1-1], the terminal device determines the SL RSSI threshold corresponding to the receiving beam based on the receiving beam used to measure the SL RSSI, or in other words, the receiving beam used on the subchannel or in the time slot corresponding to the subchannel. If the SL RSSI is greater than the SL RSSI threshold determined above, the subchannel is counted as the number of subchannels whose SL RSSI is greater than the SL RSSI threshold. It is understandable that the receiving beams used by the terminal device on different subchannels or in different time slots may be different, so the SL RSSI thresholds used for each subchannel or time slot in the first time period may also be different.

[0088] Optionally, for a subchannel, if a terminal device performs omnidirectional reception on that subchannel or within the timeslot corresponding to that subchannel, the SL RSSI threshold is configured or preconfigured by the network. For example, if the corresponding SL RSSI is measured on a subchannel within the timeslot [n1-c, n1-1], and the terminal device uses omnidirectional reception on that subchannel or within the timeslot corresponding to that subchannel, and the SL RSSI is greater than the network-configured or preconfigured SL RSSI threshold, then the subchannel count is counted as the number of subchannels whose SL RSSI is greater than the SL RSSI threshold.

[0089] Figure 6 shows a simple example of a terminal device measuring CBR. Assume that the resource pool used by the terminal device includes only two subchannels (i.e., subchannels 1 and 2 shown in Figure 6), all time slots in Figure 6 belong to the resource pool used by the terminal device, and the terminal device only occupies one subchannel when transmitting PSSCH and PSCCH. The subchannels in the sidelink grant used by the terminal device are v1, v2, v3, v4, v5, v6, and v7. When the terminal device is about to transmit data in resource v5, the terminal device measures the CBR in time slot n2-N, where N corresponds to the terminal device's processing time. Time slot n2 can be the time slot in which the terminal device transmits data.

[0090] For CBR, in time slot [n2-Nc, n2-N-1], the SL RSSI measured by the terminal device on two subchannels y and u is greater than the SL RSSI threshold. Specifically, the terminal device measures the SL RSSI on subchannel y and determines the corresponding SL RSSI threshold based on the receive beam used to measure the SL RSSI, or the receive beam used on subchannel y, or the receive beam used in the time slot where subchannel y is located. Similarly, when measuring the SL RSSI on subchannel u, the corresponding SL RSSI threshold is determined based on the receive beam used to measure the SL RSSI, or the receive beam used on subchannel u, or the receive beam used in the time slot where subchannel u is located. There is a one-to-one correspondence between receive beams and SL RSSI thresholds, and this correspondence is included in the resource pool configuration. Therefore, the CBR is 2 divided by the total number of subchannels belonging to the resource pool used by the terminal device in the time slot [n2-Nc, n2-N-1], or the CBR is 2 divided by the total number of subchannels belonging to the resource pool used by the terminal device in the time slot [n2-Nc, n2-N-1] excluding the time slot used by the terminal device for transmission. For example, if the terminal device transmits on resource v4, the time slot where v4 is located is not used to calculate the CBR. In the above example, the receiving beam used by the terminal device to measure the SL RSSI on subchannel y may be the same as or different from the receiving beam used to measure the SL RSSI on subchannel u. When the receiving beam used by the terminal device to measure the SL RSSI on subchannel y is different from the receiving beam used to measure the SL RSSI on subchannel u, the SL RSSI thresholds corresponding to the two different receiving beams may be the same or different.

[0091] In the above embodiment, the spatial transmission filter is associated with the signal strength threshold. The terminal device determines the signal strength threshold used to measure CBR based on the spatial transmission filter used for reception, thereby combining the spatial transmission filter used for reception with the CBR measurement, thereby improving the accuracy of CBR measurement in high-frequency scenarios.

[0092] In some embodiments, the channel quality parameter includes a CBR. The terminal device determines the CBR based on a first signal strength threshold and / or a second signal strength threshold; wherein the first signal strength threshold is a signal strength threshold used when the spatial transmission filter used for reception by the terminal device and the spatial transmission filter used for transmission by the terminal device meet a first condition, and the second signal strength threshold is a signal strength threshold used when the spatial transmission filter used for reception by the terminal device and the spatial transmission filter used for transmission by the terminal device do not meet the first condition.

[0093] In some embodiments, the first condition includes: the spatial domain transmission filter used for receiving covers the spatial domain transmission filter used for sending. That is, when the spatial domain transmission filter used for receiving by the terminal device covers the spatial domain transmission filter used for sending by the terminal device, the terminal device compares the measured signal strength with the first signal strength threshold, or the terminal device compares the signal strength measured by the above-mentioned spatial domain transmission filter used for receiving with the first signal strength threshold, or the terminal device compares the signal strength measured on the subchannel using the above-mentioned spatial domain transmission filter used for receiving with the first signal strength threshold. When the spatial domain transmission filter used for receiving by the terminal device does not cover the spatial domain transmission filter used for sending by the terminal device, the terminal device compares the measured signal strength with the second signal strength threshold, or the terminal device compares the signal strength measured by the above-mentioned spatial domain transmission filter used for receiving with the second signal strength threshold, or the terminal device compares the signal strength measured on the subchannel using the above-mentioned spatial domain transmission filter used for receiving with the second signal strength threshold.

[0094] In some embodiments, the first condition includes: there is a corresponding relationship between the spatial domain transmission filter used for reception and the spatial domain transmission filter used for transmission. That is, when the spatial domain transmission filter used for reception by the terminal device corresponds to the spatial domain transmission filter used for transmission by the terminal device, the terminal device compares the measured signal strength with the first signal strength threshold, or the terminal device compares the signal strength measured by the spatial domain transmission filter used for reception with the first signal strength threshold, or the terminal device compares the signal strength measured on the subchannel using the spatial domain transmission filter used for reception with the first signal strength threshold. When the spatial domain transmission filter used for reception by the terminal device does not correspond to the spatial domain transmission filter used for transmission by the terminal device, the terminal device compares the measured signal strength with the second signal strength threshold, or the terminal device compares the signal strength measured by the spatial domain transmission filter used for reception with the second signal strength threshold, or the terminal device compares the signal strength measured on the subchannel using the spatial domain transmission filter used for reception with the second signal strength threshold. Exemplarily, there is a corresponding relationship between the spatial domain transmission filter (or transmission beam) of the terminal device and the spatial domain reception filter (or reception beam). The correspondence can be one-to-one, many-to-one, one-to-many, or many-to-many, which is not limited in this application. The terminal device can determine the corresponding spatial domain receiving filter through the spatial domain transmitting filter, or determine the corresponding spatial domain transmitting filter through the spatial domain receiving filter.

[0095] In some embodiments, when the terminal device adopts the second method for receiving, it can be understood that the first condition is met, that is, it can be covered or there is a corresponding relationship. Among them, the second method is an omnidirectional reception method, or a method for receiving using an omnidirectional spatial transmission filter, or a method for receiving without using a spatial transmission filter. That is to say, for a certain sub-channel, when the terminal device adopts the second method for receiving on the sub-channel or in the time unit (such as time slot) corresponding to the sub-channel, the first signal strength threshold is used to compare the signal strength measured on the sub-channel with the first signal strength threshold.

[0096] In some embodiments, when the terminal device adopts the second method for reception, it can be understood that the first condition is not met, that is, there is no coverage or no corresponding relationship. Among them, the second method is an omnidirectional reception method, or a method for reception using an omnidirectional spatial transmission filter, or a method for reception without using a spatial transmission filter. That is to say, for a certain sub-channel, when the terminal device adopts the second method for reception on the sub-channel or in the time unit (such as time slot) corresponding to the sub-channel, the second signal strength threshold is used to compare the signal strength measured on the sub-channel with the second signal strength threshold.

[0097] In some embodiments, the spatial domain transmission filter used for the above-mentioned sending is: the spatial domain transmission filter used by the terminal device to transmit on the selected or scheduled resources.

[0098] In some embodiments, the first signal strength threshold and the second signal strength threshold are different, or in other words, the first signal strength threshold and the second signal strength threshold have different values.

[0099] In some embodiments, the first signal strength threshold is configured by the network, or pre-configured, or depends on the implementation of the terminal device, or is a preset value specified by the standard.

[0100] In some embodiments, the second signal strength threshold is configured by the network, or pre-configured, or depends on the implementation of the terminal device, or is a preset value specified by the standard.

[0101] In some embodiments, the first signal strength threshold is less than the second signal strength threshold.

[0102] In some embodiments, the first signal strength threshold is calculated based on the second signal strength threshold. Exemplarily, the first signal strength threshold is obtained by subtracting the first value from the second signal strength threshold. The second signal strength threshold and / or the first value are configured by the network, preconfigured, implemented by the terminal device, or are preset values ​​specified in a standard.

[0103] In some embodiments, the second signal strength threshold is calculated based on the first signal strength threshold. Exemplarily, the second signal strength threshold is obtained by adding the second value to the first signal strength threshold. The first signal strength threshold and / or the second value are configured by the network, preconfigured, implemented by the terminal device, or are preset values ​​specified in a standard.

[0104] In some embodiments, the first signal strength threshold and the second signal strength threshold are calculated based on the third signal strength threshold. Exemplarily, the first signal strength threshold is obtained by subtracting a third value from the third signal strength threshold, and the second signal strength threshold is obtained by adding a fourth value to the third signal strength threshold. At least one of the third signal strength threshold, the third value, and the fourth value is configured by the network, preconfigured, implemented by the terminal device, or a preset value specified in a standard.

[0105] In some embodiments, the terminal device determines the CBR based on the first signal strength threshold and / or the second signal strength threshold, including: the terminal device determines the CBR in the first time unit based on the third subchannel number and / or the fourth subchannel number, and the second subchannel number; wherein the third subchannel number is the number of subchannels whose signal strength measured in the first time period is greater than the first signal strength threshold; the fourth subchannel number is the number of subchannels whose signal strength measured in the first time period is greater than the second signal strength threshold; the second subchannel number is the number of subchannels belonging to the resource pool in the first time period, or the number of subchannels belonging to the resource pool in the first time period excluding the time unit used for the terminal device to send; the first time period is located before the first time unit.

[0106] Exemplarily, in the case where there are a third number of subchannels and a fourth number of subchannels, the CBR is equal to the sum of the third number of subchannels and the fourth number of subchannels divided by the second number of subchannels.

[0107] Exemplarily, in a case where only the third number of subchannels exists but the fourth number of subchannels does not exist, the CBR is equal to the third number of subchannels divided by the second number of subchannels.

[0108] Exemplarily, in a case where only the fourth number of subchannels exists but the third number of subchannels does not exist, the CBR is equal to the fourth number of subchannels divided by the second number of subchannels.

[0109] Exemplarily, taking the first time unit as time slot n1, time slot n1 is the time slot in which the terminal device measures the CBR, and the first time period may be time slot [n1-c, n1-1], where c is a positive integer. Exemplarily, c can refer to the explanation in the above definition of CBR. The CBR measured in time slot n1 is the number of sub-channels in time slot [n1-c, n1-1] where the SL RSSI measured by the terminal device is greater than the SL RSSI threshold divided by the number of sub-channels belonging to the resource pool, or divided by the number of sub-channels belonging to the resource pool excluding the time slot used by the terminal device for transmission. SL RSSI is measured for a certain sub-channel, and a sub-channel can be understood as a time-frequency resource corresponding to a time slot in the time domain and a sub-channel in the frequency domain. If the receiving beam used by the terminal device to measure the SL RSSI, or in other words, the receiving beam used on the sub-channel for measuring the SL RSSI or in the time slot corresponding to the sub-channel covers the transmitting beam of the terminal device, the first RSSI threshold is used to determine the CBR. If the receiving beam used by the terminal device to measure the SL RSSI, or in other words, the receiving beam used on the subchannel for measuring the SL RSSI or in the time slot corresponding to the subchannel does not cover the transmitting beam of the terminal device, the second RSSI threshold is used to determine the CBR. Alternatively, if the terminal device uses omnidirectional reception to measure the SL RSSI, the first RSSI threshold is used to determine the CBR, or the second RSSI threshold is used to determine the CBR. For example, when the corresponding SL RSSI is measured on a subchannel within the time slot [n1-c, n1-1], if the receiving beam used to measure the SL RSSI covers the transmitting beam of the terminal device, the measured SL RSSI is compared with the first RSSI threshold. If the measured SL RSSI is greater than the first SL RSSI threshold, the subchannel is counted as the number of subchannels whose SL RSSI is greater than the SL RSSI threshold value. For another example, when the corresponding SL RSSI is measured on a subchannel within the time slot [n1-c, n1-1], if omnidirectional reception is used on the subchannel or in the time slot corresponding to the subchannel, the measured SL RSSI is compared with the first RSSI threshold (or the second RSSI threshold). If the measured SL RSSI is greater than the first SL RSSI threshold (or the second RSSI threshold), the subchannel is counted as the number of subchannels whose SL RSSI is greater than the SL RSSI threshold. The transmit beam of the terminal device is the transmit beam for transmission by the terminal device, or the transmit beam for transmission on the selected or scheduled resources. For example, it is the transmit beam that the terminal device is about to transmit, such as measuring the CBR in time slot n1 and the transmit beam for transmission in time slot n1+N, where N corresponds to the processing time of the terminal device.

[0110] Figure 6 shows a simple example of a terminal device measuring CBR. Assume that the resource pool used by the terminal device includes only two subchannels (i.e., subchannels 1 and 2 shown in Figure 6), all time slots in Figure 6 belong to the resource pool used by the terminal device, and the terminal device only occupies one subchannel for transmitting PSSCH and PSCCH. The subchannels in the sidelink grant used by the terminal device are v1, v2, v3, v4, v5, v6, and v7. When the terminal device is about to transmit data in resource v5, the terminal device measures the CBR in time slot n2-N, where N corresponds to the terminal device's processing time. Time slot n2 can be the time slot in which the terminal device transmits data.

[0111] For CBR, in the time slot [n2-Nc, n2-N-1], the SL RSSI measured by the terminal device on the two subchannels y and u is greater than the RSSI threshold value. Specifically, the terminal device measures the SL RSSI on subchannel y, and the receiving beam used to measure the SL RSSI, or the receiving beam used on subchannel y, or the receiving beam used in the time slot where subchannel y is located covers the transmitting beam of the terminal device, then the measured SL RSSI is compared with the first RSSI threshold. Similarly, when the SL RSSI is measured on subchannel u, and the receiving beam used to measure the SL RSSI, or the receiving beam used on subchannel u, or the receiving beam used in the time slot where subchannel u is located does not cover the transmitting beam of the terminal device, then the measured SL RSSI is compared with the second RSSI threshold. Therefore, the CBR is 2 divided by the total number of subchannels belonging to the resource pool used by the terminal device in the time slot [n2-Nc, n2-N-1], or the CBR is 2 divided by the total number of subchannels belonging to the resource pool used by the terminal device in the time slot [n2-Nc, n2-N-1] excluding the time slot used by the terminal device for transmission. Exemplarily, if the terminal device transmits on resource v4, the time slot where v4 is located is not used to calculate the CBR. Exemplarily, the transmit beam of the terminal device is the transmit beam that the terminal device transmits on resource v5. In the above example, the receive beam used by the terminal device to measure the SL RSSI on subchannel y may be the same as or different from the receive beam used to measure the SL RSSI on subchannel u.

[0112] In the above embodiment, the terminal device determines the signal strength threshold based on the coverage or correspondence between the spatial transmission filter used for receiving and the spatial transmission filter used for sending; in the case of coverage or correspondence, the measured signal strength is compared with the first signal strength threshold; in the case of non-coverage or non-correspondence, the measured signal strength is compared with the second signal strength threshold, thereby fully considering the impact of the spatial transmission filter used for receiving on the CBR measurement and improving the accuracy of CBR measurement in high-frequency scenarios.

[0113] In some embodiments, the channel quality parameter includes a CBR. The terminal device determines the CBR based on a signal strength measured during a second time unit, where the second time unit includes: a time unit receiving using a first method and / or a time unit receiving using a second method; wherein the first method is a method of receiving using a spatial transmission filter, and the second method is different from the first method.

[0114] In some embodiments, the second mode is an omnidirectional reception mode, or a reception mode using an omnidirectional spatial transmission filter, or a reception mode not using a spatial transmission filter.

[0115] In some embodiments, the second time unit is located within a first time period preceding the first time unit, where the first time unit is the time unit for measuring the CBR. For example, the first time period is time slot [n1-c, n1-1], time slot n1 is the time slot for measuring the CBR, c is a positive integer, and the second time unit is located within time slot [n1-c, n1-1]. For example, the second time unit may be one or more time slots within time slot [n1-c, n1-1]. For example, c can refer to the explanation in the definition of CBR above.

[0116] In some embodiments, the second time unit is a time unit of a resource pool belonging to the terminal device.

[0117] In some embodiments, the second time unit includes a time unit for receiving using a first method, where the first method is a method for receiving using a spatial transmission filter. In some embodiments, the spatial transmission filter used for reception by the terminal device and the spatial transmission filter used for transmission by the terminal device meet the first condition. That is, the second time unit includes: receiving using a spatial transmission filter, and the spatial transmission filter used for reception and the spatial transmission filter used for transmission meet the first condition. For an explanation of the first condition and the spatial transmission filter used for transmission by the terminal device, please refer to the above embodiment and will not be repeated here.

[0118] In some embodiments, the second time unit includes a time unit for receiving in a second manner, where the second manner is an omnidirectional reception manner, or a reception manner using an omnidirectional spatial transmission filter, or a reception manner not using a spatial transmission filter.

[0119] In some embodiments, the second time unit includes a time unit received in the first manner and a time unit received in the second manner.

[0120] In some embodiments, the terminal device determines the CBR based on the signal strength measured in the second time unit, including: the terminal device determines the CBR based on the number of fifth sub-channels and the number of sixth sub-channels; wherein the number of fifth sub-channels is the number of sub-channels whose signal strength measured in the second time unit is greater than the signal strength threshold; the number of sixth sub-channels is the number of sub-channels belonging to the resource pool in the second time unit, or the number of sub-channels belonging to the resource pool in the second time unit excluding the time unit used for transmission by the terminal device.

[0121] Exemplarily, the CBR is equal to the number of the fifth sub-channels divided by the number of the sixth sub-channels.

[0122] For example, taking the second time unit as the first time slot and time slot n1 as the time slot for measuring the CBR as an example, the terminal device determines the CBR based on the SL RSSI measured on the subchannel in the first time slot. The CBR measured in time slot n1 is the number of subchannels in the first time slot whose SL RSSI measured by the terminal device is greater than the SL RSSI threshold value divided by the number of subchannels belonging to the resource pool, or divided by the number of subchannels belonging to the resource pool excluding the time slot used for transmission by the terminal device.

[0123] Figure 7 shows a simple example of a terminal device measuring CBR. Assume that the resource pool used by the terminal device includes only two subchannels (i.e., subchannels 1 and 2 shown in Figure 7), all time slots in Figure 7 belong to the resource pool used by the terminal device, and the terminal device only occupies one subchannel when transmitting PSSCH and PSCCH. The subchannels in the sidelink grant used by the terminal device are v1, v2, v3, v4, v5, v6, and v7. When the terminal device is about to transmit data in resource v5, the terminal device measures the CBR in time slot n2-N, where N is the terminal device's processing time. Time slot n2 can be the time slot in which the terminal device transmits data.

[0124] Optionally, the first time slot includes a time slot in which the terminal device performs omnidirectional reception in a time slot belonging to the resource pool in time slots [n2-Nc, n2-N-1]. For example, if the terminal device uses omnidirectional reception in time slots h, j, k, m, the first time slot includes time slots h, j, k, m.

[0125] Optionally, the first time slot includes a time slot in which the terminal device uses a beam for reception in a time slot belonging to the resource pool in time slots [n2-Nc, n2-N-1], and the beam used for reception covers the transmission beam used by the terminal device, or is a reception beam corresponding to the transmission beam used by the terminal device. Exemplarily, the transmission beam is a transmission beam for transmission by the terminal device on resource v5. For example, if the terminal device uses a beam for reception in time slots h, j, k, m, and the reception beam covers the transmission beam used for transmission on resource v5, then the first time slot includes time slots h, j, k, m.

[0126] Optionally, the first time slot includes time slots in which the terminal device uses beamforming for reception and time slots in which the terminal device performs omnidirectional reception in time slots [n2-Nc, n2-N-1] belonging to the resource pool. For example, if the terminal device performs omnidirectional reception in time slots h and j, and uses beamforming for reception in time slots k and m, and the receive beam covers the transmit beam of the terminal device transmitting on resource v5, then the first time slot includes time slots h, j, k, and m.

[0127] The terminal device determines the CBR based on the SL RSSI measured on the subchannel in the first time slot. Assume that the SL RSSI measured by the terminal device on the two subchannels y and u is greater than the configured RSSI threshold. Therefore, the CBR is 2 divided by the total number of subchannels belonging to the resource pool used by the terminal device in the time slot [n2-Nc, n2-N-1], or the CBR is 2 divided by the total number of subchannels belonging to the resource pool used by the terminal device in the time slot [n2-Nc, n2-N-1] excluding the time slot used by the terminal device for transmission. For example, if the terminal device transmits on resource v4, the time slot where v4 is located is not used to calculate the CBR.

[0128] In the above embodiment, the terminal device determines the CBR based on the signal strength measured in the time unit for reception using the spatial transmission filter and / or the time unit for omnidirectional reception, fully considering the impact of the spatial transmission filter used for reception on the CBR measurement, and improving the accuracy of CBR measurement in high-frequency scenarios.

[0129] In some embodiments, the channel quality parameter includes a CR. The terminal device determines the CR based on the first sub-channel, and the first sub-channel is determined based on a spatial transmission filter used by the terminal device for transmission.

[0130] In some embodiments, the spatial domain transmission filter used for the above-mentioned sending is: the spatial domain transmission filter used by the terminal device to transmit on the selected or scheduled resources.

[0131] In some embodiments, the first subchannel is a subchannel that is transmitted using the spatial transmission filter used for transmission. Exemplarily, the first subchannel is a subchannel that has been transmitted using the spatial transmission filter used for transmission.

[0132] In some embodiments, the first subchannel is located within the second time period, and the second time period is located before a third time unit, where the third time unit is the time unit for measuring CR. For example, taking the third time unit as time slot n1, where time slot n1 is the time slot for measuring CR, the first subchannel is located within time slots [n1-a, n1-1], where a is a positive integer. For example, a can refer to the explanation of the definition of CR above.

[0133] In some embodiments, the first sub-channel is located in a resource pool used by the terminal device.

[0134] In some embodiments, the terminal device determines the CR based on the first subchannel, including: the terminal device determines the CR based on the number of seventh subchannels, the number of eighth subchannels and the number of ninth subchannels in the third time unit; wherein the number of seventh subchannels is the number of subchannels that have been transmitted using the spatial transmission filter used for transmission in the second time period; the number of eighth subchannels is the number of subchannels included in the obtained sidelink authorization in the third time period; the number of ninth subchannels is the number of subchannels belonging to the resource pool in the second and third time periods; the second time period is before the third time unit, the third time period includes the third time unit, or the third time period includes the third time unit and at least one time unit after the third time unit.

[0135] Exemplarily, CR is equal to the sum of the number of the seventh sub-channel and the number of the eighth sub-channel, divided by the number of the ninth sub-channel.

[0136] Exemplarily, for the CR measured in time slot n1, the CR is the ratio of the number of subchannels that the terminal device has used to transmit beams for data transmission in the time slot range [n1-a, n1-1] and the number of subchannels included in the sideline authorization obtained in the range [n1, n1+b] to the total number of subchannels belonging to the resource pool in the range [n1-a, n1+b]. The CR can be calculated separately for different priorities.

[0137] The transmit beam of a terminal device is the transmit beam used for transmission by the terminal device, or the transmit beam used for transmission on selected or scheduled resources. For example, the transmit beam used for transmission by the terminal device is to be transmitted, such as when the CR is measured in time slot n1 and the transmit beam used for transmission is in time slot n1+N, where N corresponds to the processing time of the terminal device.

[0138] Figure 8 shows a simple example of a terminal device measuring CR. Assume that the resource pool used by the terminal device includes only two subchannels (i.e., subchannels 1 and 2 shown in Figure 8), all time slots in Figure 8 belong to the resource pool used by the terminal device, and the terminal device only occupies one subchannel when transmitting PSSCH and PSCCH. The subchannels in the sidelink grant used by the terminal device are v1, v2, v3, v4, v5, v6, and v7. When the terminal device is about to transmit data in resource v5, the terminal device measures CR in time slot n2-N, where N is the terminal device's processing time. Time slot n2 can be the time slot in which the terminal device transmits data.

[0139] For CR, assuming that a and b are positive integers, the subchannels v1, v2, and v3 that the terminal device has used to transmit data in [n2-Na, n2-N-1] and whose transmit beams are the same as those used for transmission on resource v5 are used, and the subchannels for which the terminal device obtains sideline authorization in [n2-N, n2-N+b] are used are v5 and v6. Then, CR is 5 divided by the total number of subchannels belonging to the resource pool used by the terminal device in the time slot [n2-Na, n2-N+b], or CR is 5 divided by the total number of subchannels belonging to the resource pool used by the terminal device in the time slot [n2-Na, n2-N+b], excluding the time slots used for transmission by the terminal device. For example, if the terminal device transmits on resource v4, the time slot where v4 is located is not used to calculate CR.

[0140] For CR, assuming that a is a positive integer and b is 0, that is, n2-N+b is n2-N, the sub-channels that the terminal device has used to transmit data in [n2-Na,n2-N-1] and the transmit beam used to transmit data is the same as the transmit beam transmitted on resource v5 are v1, v2, and v3, then CR is 3 divided by the total number of sub-channels belonging to the resource pool used by the terminal device in the time slot [n2-Na,n2-N], or CR is 3 divided by the total number of sub-channels belonging to the resource pool used by the terminal device in the time slot [n2-Na,n2-N] excluding the time slot used by the terminal device for transmission.

[0141] CR can be calculated separately for different priorities.

[0142] Assume that a and b are positive integers, the subchannels v1, v2, and v3 that the terminal device has used to transmit data in [n2-Na, n2-N-1] and the transmit beam used to transmit data are the same as the transmit beam transmitted on resource v5. For a certain priority f, the terminal device sends data with priority f in subchannels v1 and v3, and the subchannels for sidelink authorization obtained in [nN, n-N+b] are v5 and v6. The terminal device assumes that the priority of transmitting data on v5 and v6 is f. Then the CR for priority f is 4 divided by the total number of subchannels belonging to the resource pool used by the terminal device in the time slot [n2-Na, n2-N+b], or the CR is 4 divided by the total number of subchannels belonging to the resource pool used by the terminal device in the time slot [n2-Na, n2-N+b] excluding the time slot used by the terminal device for transmission.

[0143] Assume that a is a positive integer and b=0, that is, n2-N+b is n2-N, the sub-channels v1, v2, and v3 that the terminal device has used to send data in [n2-Na, n2-N-1] and the transmission beam used to transmit data is the same as the transmission beam transmitted on resource v5. For a certain priority f, the terminal device sends data with priority f in sub-channels v1, v3. Then the CR for priority f is 2 divided by the total number of sub-channels belonging to the resource pool used by the terminal device in the time slot [n2-Na, n2-N], or the CR is 2 divided by the total number of sub-channels belonging to the resource pool used by the terminal device in the time slot [n2-Na, n2-N] except the time slot used by the terminal device for transmission.

[0144] In the above embodiment, the terminal device determines the CR based on the sub-channel sent using the spatial transmission filter, fully considering the impact of the spatial transmission filter used for sending on the CR measurement, and improving the accuracy of CR measurement in high-frequency scenarios.

[0145] To sum up, the technical solution provided in the embodiment of the present application measures the channel quality parameters of the side link based on the spatial transmission filter, thereby combining the spatial transmission filter used by the terminal device to receive or send with the measurement of the channel quality parameters of the side link such as CBR or CR, so that the measurement of channel quality parameters such as CBR or CR is more accurate under high-frequency side communication, thereby improving the accuracy and efficiency of system congestion control.

[0146] The following are device embodiments of the present application, which can be used to implement the method embodiments of the present application. For details not disclosed in the device embodiments of the present application, please refer to the method embodiments of the present application.

[0147] Please refer to Figure 9, which shows a block diagram of a sidelink measurement device provided by one embodiment of the present application. This device has the functionality to implement the aforementioned sidelink measurement method. This functionality can be implemented in hardware or by hardware executing corresponding software. This device can be the terminal device described above, or it can be provided within a terminal device. As shown in Figure 9, the device 900 may include a processing module 910.

[0148] The processing module 910 is configured to measure a channel quality parameter of the sidelink according to the spatial transmission filter.

[0149] In some embodiments, the channel quality parameter includes a CBR. The processing module 910 is configured to determine the CBR according to a signal strength threshold corresponding to a spatial transmission filter used by the terminal device for reception.

[0150] In some embodiments, the processing module 910 is also used to determine the signal strength threshold corresponding to the spatial transmission filter used for reception by the terminal device based on at least one set of correspondences; wherein the correspondence is the correspondence between the spatial transmission filter used for reception and the signal strength threshold.

[0151] In some embodiments, the corresponding relationship includes: a corresponding relationship between a spatial domain transmission filter and a signal strength threshold; or a corresponding relationship between multiple spatial domain transmission filters and a signal strength threshold.

[0152] In some embodiments, the processing module 910 is used to determine the CBR in a first time unit based on the first number of subchannels and the second number of subchannels; wherein the first number of subchannels includes the number of subchannels whose signal strength measured in a first time period is greater than the signal strength threshold corresponding to the spatial transmission filter used by the terminal device for reception; the second number of subchannels is the number of subchannels belonging to the resource pool in the first time period, or the number of subchannels belonging to the resource pool in the first time period excluding the time unit used for transmission by the terminal device, and the first time period is located before the first time unit.

[0153] In some embodiments, the channel quality parameter includes a CBR. The processing module 910 is configured to determine the CBR based on a first signal strength threshold and / or a second signal strength threshold; wherein the first signal strength threshold is a signal strength threshold used when a spatial domain transmission filter used by a terminal device for reception and a spatial domain transmission filter used by the terminal device for transmission meet a first condition, and the second signal strength threshold is a signal strength threshold used when the spatial domain transmission filter used by the terminal device for reception and the spatial domain transmission filter used by the terminal device for transmission do not meet the first condition.

[0154] In some embodiments, the first signal strength threshold is less than the second signal strength threshold.

[0155] In some embodiments, the first signal strength threshold is obtained by subtracting a first value from the second signal strength threshold; or, the second signal strength threshold is obtained by adding a second value to the first signal strength threshold; or, the first signal strength threshold is obtained by subtracting a third value from the third signal strength threshold, and the second signal strength threshold is obtained by adding a fourth value to the third signal strength threshold.

[0156] In some embodiments, the processing module 910 is used to determine the CBR in a first time unit based on the third sub-channel number and / or the fourth sub-channel number, and the second sub-channel number; wherein the third sub-channel number is the number of sub-channels whose signal strength measured in the first time period is greater than the first signal strength threshold; the fourth sub-channel number is the number of sub-channels whose signal strength measured in the first time period is greater than the second signal strength threshold; the second sub-channel number is the number of sub-channels belonging to the resource pool in the first time period, or the number of sub-channels belonging to the resource pool in the first time period excluding the time unit used for the terminal device to send; the first time period is located before the first time unit.

[0157] In some embodiments, the channel quality parameter includes a CBR. The processing module 910 is configured to determine the CBR based on a signal strength measured within a second time unit, where the second time unit includes: a time unit for receiving using a first method and / or a time unit for receiving using a second method; wherein the first method is a method for receiving using the spatial transmission filter, and the second method is different from the first method.

[0158] In some embodiments, the second manner is an omnidirectional reception manner, or a reception manner using an omnidirectional spatial transmission filter, or a reception manner not using the spatial transmission filter.

[0159] In some embodiments, the second time unit is located in a first time period before a first time unit, and the first time unit is a time unit for measuring the CBR.

[0160] In some embodiments, the spatial domain transmission filter used by the terminal device for reception and the spatial domain transmission filter used by the terminal device for transmission meet the first condition.

[0161] In some embodiments, the processing module 910 is used to determine the CBR based on the number of fifth sub-channels and the number of sixth sub-channels; wherein the number of fifth sub-channels is the number of sub-channels whose signal strength measured in the second time unit is greater than the signal strength threshold; the number of sixth sub-channels is the number of sub-channels belonging to the resource pool in the second time unit, or the number of sub-channels belonging to the resource pool in the second time unit excluding the time unit used for terminal device transmission.

[0162] In some embodiments, the channel quality parameter includes a CR. The processing module 910 is configured to determine the CR according to a first sub-channel, where the first sub-channel is determined according to a spatial transmission filter used by a terminal device for transmission.

[0163] In some embodiments, the first sub-channel is a sub-channel transmitted using the spatial domain transmission filter used for the sending.

[0164] In some embodiments, the processing module 910 is used to determine the CR in a third time unit based on the number of seventh subchannels, the number of eighth subchannels, and the number of ninth subchannels; wherein the number of seventh subchannels is the number of subchannels that have been transmitted using the spatial transmission filter used for transmission in the second time period; the number of eighth subchannels is the number of subchannels included in the obtained sidelink authorization in the third time period; the number of ninth subchannels is the number of subchannels belonging to the resource pool in the second time period and the third time period; the second time period is before the third time unit, the third time period includes the third time unit, or the third time period includes the third time unit and at least one time unit after the third time unit.

[0165] In some embodiments, the first condition includes: the spatial domain transmission filter used for the reception covers the spatial domain transmission filter used for the transmission.

[0166] In some embodiments, the first condition includes: there is a correspondence between the spatial domain transmission filter used for the reception and the spatial domain transmission filter used for the transmission.

[0167] In some embodiments, the spatial domain transmission filter used for the sending is: the spatial domain transmission filter used by the terminal device to transmit on the selected or scheduled resources.

[0168] It should be noted that, when the device provided in the above embodiment realizes its function, it only uses the division of the above-mentioned functional modules as an example. In actual application, the above-mentioned functions can be assigned to different functional modules according to actual needs, that is, the content structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0169] Regarding the device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here. For details not described in detail in the embodiment of the device, reference can be made to the above method embodiment.

[0170] Please refer to FIG10 , which shows a schematic diagram of the structure of a terminal device provided by an embodiment of the present application. The terminal device 1000 may include: a processor 1001 , a transceiver 1002 , and a memory 1003 .

[0171] The processor 1001 includes one or more processing cores. The processor 1001 executes various functional applications and information processing by running software programs and modules.

[0172] The transceiver 1002 may include a receiver and a transmitter. For example, the receiver and the transmitter may be implemented as the same wireless communication component, which may include a wireless communication chip and a radio frequency antenna.

[0173] The memory 1003 may be connected to the processor 1001 and the transceiver 1002 .

[0174] The memory 1003 may be used to store a computer program executed by the processor, and the processor 1001 is used to execute the computer program to implement each step in the above method embodiment.

[0175] In an exemplary embodiment, the processor 1001 is configured to measure a channel quality parameter of a sidelink according to a spatial transmission filter.

[0176] For details not described in detail in this embodiment, please refer to the above embodiments and will not be described in detail here.

[0177] In addition, the memory can be implemented by any type of volatile or non-volatile storage device or a combination thereof, including but not limited to: magnetic or optical disks, electrically erasable programmable read-only memory, erasable programmable read-only memory, static access memory, read-only memory, magnetic memory, flash memory, and programmable read-only memory.

[0178] An embodiment of the present application also provides a computer-readable storage medium, in which a computer program is stored, and the computer program is used to be executed by a processor to implement the above-mentioned side link measurement method. Optionally, the computer-readable storage medium may include: ROM (Read-Only Memory), RAM (Random-Access Memory), SSD (Solid State Drives) or an optical disk, etc. Among them, the random access memory may include ReRAM (Resistance Random Access Memory) and DRAM (Dynamic Random Access Memory).

[0179] An embodiment of the present application further provides a chip, which includes a programmable logic circuit and / or program instructions. When the chip is running, it is used to implement the above-mentioned side link measurement method.

[0180] An embodiment of the present application also provides a computer program product, which includes computer instructions stored in a computer-readable storage medium. A processor reads and executes the computer instructions from the computer-readable storage medium to implement the above-mentioned sidelink measurement method.

[0181] It should be understood that the "indication" mentioned in the embodiments of this application can be a direct indication, an indirect indication, or an indication of an association. For example, "A indicates B" can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association between A and B.

[0182] In the description of the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between the two, or an association relationship between the two, or a relationship between indication and being indicated, configuration and being configured, etc.

[0183] In some embodiments of the present application, "predefined" may be implemented by pre-storing corresponding codes, tables, or other methods that can be used to indicate relevant information in a device (e.g., including a terminal device and a network device), and the present application does not limit the specific implementation method. For example, predefined may refer to information defined in a protocol.

[0184] In some embodiments of the present application, the "protocol" may refer to a standard protocol in the field of communications, for example, it may include an LTE protocol, a NR protocol, and related protocols used in future communication systems, and this application does not limit this.

[0185] In this document, "plurality" refers to two or more. "And / or" describes a relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. The character " / " generally indicates an "or" relationship between the associated objects.

[0186] The term “greater than or equal to” mentioned herein may mean greater than or equal to, or greater than, and the term “less than or equal to” may mean less than or equal to, or less than.

[0187] In addition, the step numbers described in this document only illustrate a possible execution order between the steps. In some other embodiments, the above steps may not be executed in the order of the numbers, such as two steps with different numbers are executed at the same time, or two steps with different numbers are executed in the opposite order of the diagram. The embodiments of the present application are not limited to this.

[0188] Those skilled in the art will appreciate that in one or more of the above examples, the functions described in the embodiments of the present application can be implemented using hardware, software, firmware, or any combination thereof. When implemented using software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media and communication media, wherein communication media include any media that facilitates the transmission of computer programs from one place to another. The storage medium can be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0189] The above description is merely an exemplary embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A sidelink measurement method, characterized in that, The method is executed by a terminal device, and the method includes: Measure the channel quality parameters of the sidelink according to the spatial domain transmission filter.

2. The method according to claim 1, wherein The channel quality parameters include the channel busy rate CBR; The measuring the channel quality parameters of the sidelink according to the spatial domain transmission filter includes: Determine the CBR according to the signal strength threshold corresponding to the spatial domain transmission filter used by the terminal device for reception.

3. The method according to claim 2, wherein The method further includes: Determine the signal strength threshold corresponding to the spatial domain transmission filter used by the terminal device for reception according to at least one set of corresponding relationships; wherein, the corresponding relationship is the corresponding relationship between the spatial domain transmission filter used for reception and the signal strength threshold.

4. The method according to claim 3, wherein The corresponding relationship includes: The corresponding relationship between one spatial domain transmission filter and one signal strength threshold; Or, The corresponding relationship between multiple spatial domain transmission filters and one signal strength threshold.

5. The method according to any one of claims 2 to 4, characterized in that, The determining the CBR according to the signal strength threshold corresponding to the spatial domain transmission filter used by the terminal device for reception includes: In a first time unit, determine the CBR according to a first sub-channel number and a second sub-channel number; wherein, the first sub-channel number includes the number of sub-channels whose measured signal strength is greater than the signal strength threshold corresponding to the spatial domain transmission filter used by the terminal device for reception within a first time period; the second sub-channel number is the number of sub-channels belonging to the resource pool within the first time period, or the number of sub-channels belonging to the resource pool except for the time unit used by the terminal device for transmission within the first time period, and the first time period is before the first time unit.

6. The method according to claim 1, wherein The channel quality parameters include CBR; The measuring the channel quality parameters of the sidelink according to the spatial domain transmission filter includes: Determine the CBR according to a first signal strength threshold and / or a second signal strength threshold; Wherein, the first signal strength threshold is the signal strength threshold used when the spatial domain transmission filter used by the terminal device for reception and the spatial domain transmission filter used by the terminal device for transmission satisfy a first condition, and the second signal strength threshold is the signal strength threshold used when the spatial domain transmission filter used by the terminal device for reception and the spatial domain transmission filter used by the terminal device for transmission do not satisfy the first condition.

7. The method according to claim 6, wherein The first signal strength threshold is less than the second signal strength threshold.

8. The method according to claim 6 or 7, wherein The first signal strength threshold is obtained by subtracting a first value from the second signal strength threshold; Or, The second signal strength threshold is obtained by adding a second value to the first signal strength threshold; Or, The first signal strength threshold is obtained by subtracting a third value from a third signal strength threshold, and the second signal strength threshold is obtained by adding a fourth value to the third signal strength threshold.

9. The method according to any one of claims 6 to 8, characterized in that, The determining the CBR according to the first signal strength threshold and / or the second signal strength threshold includes: In a first time unit, determine the CBR according to a third sub-channel number and / or a fourth sub-channel number, and a second sub-channel number; Wherein, the number of the third sub-channels is the number of sub-channels whose signal strength measured within the first time period is greater than the first signal strength threshold; the number of the fourth sub-channels is the number of sub-channels whose signal strength measured within the first time period is greater than the second signal strength threshold; the number of the second sub-channels is the number of sub-channels belonging to the resource pool within the first time period, or the number of sub-channels belonging to the resource pool within the first time period except for the time units used by the terminal device for transmission. The first time period is located before the first time unit.

10. The method according to claim 1, wherein The channel quality parameter includes CBR. Measuring the channel quality parameter of the sidelink according to the spatial domain transmission filter includes: Determining the CBR according to the signal strength measured within the second time unit, where the second time unit includes: the time unit for receiving in the first manner, and / or the time unit for receiving in the second manner; wherein, the first manner is the manner of receiving using the spatial domain transmission filter, and the second manner is different from the first manner.

11. The method according to claim 10, characterized in that, The second manner is the manner of omnidirectional reception, or the manner of receiving using an omnidirectional spatial domain transmission filter, or the manner of receiving without using the spatial domain transmission filter.

12. The method according to claim 10 or 11, characterized in that, The second time unit is within the first time period before the first time unit, and the first time unit is the time unit for measuring the CBR.

13. The method according to any one of claims 10 to 12, characterized in that, The spatial domain transmission filter used by the terminal device for reception and the spatial domain transmission filter used by the terminal device for transmission satisfy the first condition.

14. The method according to any one of claims 10 to 13, characterized in that Determining the CBR according to the signal strength measured within the second time unit includes: Determining the CBR according to the number of the fifth sub-channels and the number of the sixth sub-channels; wherein, the number of the fifth sub-channels is the number of sub-channels whose signal strength measured within the second time unit is greater than the signal strength threshold; the number of the sixth sub-channels is the number of sub-channels belonging to the resource pool within the second time unit, or the number of sub-channels belonging to the resource pool within the second time unit except for the time units used by the terminal device for transmission.

15. The method according to claim 1, characterized in that, The channel quality parameter includes channel occupancy rate CR. Measuring the channel quality parameter of the sidelink according to the spatial domain transmission filter includes: Determining the CR according to the first sub-channel, where the first sub-channel is determined according to the spatial domain transmission filter used by the terminal device for transmission.

16. The method according to claim 15, wherein The first sub-channel is the sub-channel for transmission using the spatial domain transmission filter used for transmission.

17. The method according to claim 15 or 16, characterized in that, Determining the CR according to the first sub-channel includes: In a third time unit, determine the CR according to the number of seventh sub-channels, the number of eighth sub-channels, and the number of ninth sub-channels; wherein, the number of seventh sub-channels is the number of sub-channels that have used the spatial domain transmission filter for transmission during a second time period; the number of eighth sub-channels is the number of sub-channels included in the sidelink grant obtained during a third time period; the number of ninth sub-channels is the number of sub-channels belonging to the resource pool during the second time period and the third time period; the second time period is before the third time unit, the third time period includes the third time unit, or the third time period includes the third time unit and at least one time unit after the third time unit.

18. The method according to any one of claims 6 to 9 and 13, characterized in that The first condition includes: the spatial domain transmission filter used for reception covers the spatial domain transmission filter used for transmission.

19. The method according to any one of claims 6 to 9 and 13, characterized in that, The first condition includes: there is a corresponding relationship between the spatial domain transmission filter used for reception and the spatial domain transmission filter used for transmission.

20. The method according to any one of claims 6 to 9, 13, and 15 to 17, characterized in that The spatial domain transmission filter used for transmission is: the spatial domain transmission filter used by the terminal device for transmission on the selected or scheduled resources.

21. A sidelink measurement device, characterized in that, The apparatus includes: A processing module, configured to measure the channel quality parameter of the sidelink according to the spatial domain transmission filter.

22. The device according to claim 21, characterized in that, The channel quality parameter includes the channel busy rate CBR; The processing module, configured to determine the CBR according to the signal strength threshold corresponding to the spatial domain transmission filter used for reception by the terminal device. Determine the CBR.

23. The device according to claim 22, characterized in that, The processing module is further configured to determine the signal strength threshold corresponding to the spatial domain transmission filter used for reception by the terminal device according to at least one set of corresponding relationships; wherein, the corresponding relationship is the corresponding relationship between the spatial domain transmission filter used for reception and the signal strength threshold.

24. The device according to claim 23, wherein, The corresponding relationship includes: The corresponding relationship between one spatial domain transmission filter and one signal strength threshold; Or, The corresponding relationship between multiple spatial domain transmission filters and one signal strength threshold.

25. The device according to any one of claims 22 to 24, characterized in that The processing module is configured to determine the CBR in a first time unit according to the number of first sub-channels and the number of second sub-channels; wherein, the number of first sub-channels includes the number of sub-channels whose measured signal strength is greater than the signal strength threshold corresponding to the spatial domain transmission filter used for reception by the terminal device during a first time period; the number of second sub-channels is the number of sub-channels belonging to the resource pool during the first time period, or the number of sub-channels belonging to the resource pool except for the time unit used for transmission by the terminal device during the first time period, and the first time period is before the first time unit.

26. The device according to claim 21, characterized in that, The channel quality parameter includes CBR; The processing module is configured to determine the CBR according to the first signal strength threshold and / or the second signal strength threshold. Wherein, the first signal strength threshold is a signal strength threshold adopted when the spatial domain transmission filter used for receiving by the terminal device and the spatial domain transmission filter used for transmitting by the terminal device satisfy a first condition, and the second signal strength threshold is a signal strength threshold adopted when the spatial domain transmission filter used for receiving by the terminal device and the spatial domain transmission filter used for transmitting by the terminal device do not satisfy the first condition.

27. The device according to claim 26, wherein, The first signal strength threshold is less than the second signal strength threshold.

28. The device according to claim 26 or 27, wherein the first signal strength threshold is obtained by subtracting a first value from the second signal strength threshold; or the second signal strength threshold is obtained by adding a second value to the first signal strength threshold; or the first signal strength threshold is obtained by subtracting a third value from a third signal strength threshold, and the second signal strength threshold is obtained by adding a fourth value to the third signal strength threshold.

29. The device according to any one of claims 26 to 28, characterized in that, The processing module is configured to determine the CBR according to the third sub-channel number and / or the fourth sub-channel number, and the second sub-channel number in a first time unit; wherein, the third sub-channel number is the number of sub-channels whose measured signal strength is greater than the first signal strength threshold within a first time period; the fourth sub-channel number is the number of sub-channels whose measured signal strength is greater than the second signal strength threshold within the first time period; the second sub-channel number is the number of sub-channels belonging to the resource pool within the first time period, or the number of sub-channels belonging to the resource pool except for the time unit used for transmitting by the terminal device within the first time period; the first time period is before the first time unit.

30. The device according to claim 21, characterized in that, The channel quality parameter includes CBR; The processing module is configured to determine the CBR according to the signal strength measured in a second time unit, where the second time unit includes: a time unit for receiving in a first manner, and / or, a time unit for receiving in a second manner; wherein, the first manner is a manner of receiving using the spatial domain transmission filter, and the second manner is different from the first manner.

31. The device according to claim 30, wherein, The second manner is an omnidirectional receiving manner, or a manner of receiving using an omnidirectional spatial domain transmission filter, or a manner of receiving without using the spatial domain transmission filter.

32. The device according to claim 30 or 31, characterized in that, The second time unit is within a first time period before the first time unit, and the first time unit is the time unit for measuring the CBR.

33. The device according to any one of claims 30 to 32, characterized in that, The spatial domain transmission filter used for receiving by the terminal device and the spatial domain transmission filter used for transmitting by the terminal device satisfy the first condition.

34. The device according to any one of claims 30 to 33, characterized in that, The processing module is configured to determine the CBR according to the fifth sub-channel number and the sixth sub-channel number; wherein, the fifth sub-channel number is the number of sub-channels whose measured signal strength is greater than the signal strength threshold within the second time unit; the sixth sub-channel number is the number of sub-channels belonging to the resource pool within the second time unit, or the number of sub-channels belonging to the resource pool except for the time unit used for transmitting by the terminal device within the second time unit.

35. The device according to claim 21, characterized in that, The channel quality parameter includes a channel occupancy rate CR; The processing module is configured to determine the CR according to a first sub-channel, where the first sub-channel is determined according to a spatial domain transmission filter used by the terminal device for transmission.

36. The device according to claim 35, characterized in that, The first sub-channel is a sub-channel that uses the spatial domain transmission filter used for the transmission.

37. The device according to claim 35 or 36, characterized in that, The processing module is configured to determine the CR according to a seventh sub-channel number, an eighth sub-channel number, and a ninth sub-channel number in a third time unit; where the seventh sub-channel number is the number of sub-channels that have used the spatial domain transmission filter used for the transmission within a second time period; the eighth sub-channel number is the number of sub-channels included in the sidelink grant obtained within a third time period; the ninth sub-channel number is the number of sub-channels belonging to the resource pool within the second time period and the third time period; the second time period is before the third time unit, the third time period includes the third time unit, or the third time period includes the third time unit and at least one time unit after the third time unit.

38. The device according to any one of claims 26 to 29 and 33, characterized in that The first condition includes: the spatial domain transmission filter used for reception covers the spatial domain transmission filter used for transmission.

39. The device according to any one of claims 26 to 29 and 33, characterized in that, The first condition includes: there is a corresponding relationship between the spatial domain transmission filter used for reception and the spatial domain transmission filter used for transmission.

40. The device according to any one of claims 26 to 29, 33 and 35 to 37, characterized in that, The spatial domain transmission filter used for transmission is: the spatial domain transmission filter used by the terminal device for transmission on the selected or scheduled resources.

41. A terminal device, characterized in that, The terminal device includes a processor and a memory, and a computer program is stored in the memory, and the processor executes the computer program to implement the method according to any one of claims 1 to 20.

42. A computer-readable storage medium, characterized in that, A computer program is stored in the storage medium, and the computer program is used to be executed by a processor to implement the method according to any one of claims 1 to 20.

43. A chip, characterized in that, The chip includes a programmable logic circuit and / or program instructions, and when the chip runs, it is used to implement the method according to any one of claims 1 to 20.

44. A computer program product, characterized in that, The computer program product includes computer instructions, the computer instructions are stored in a computer-readable storage medium, and the processor reads and executes the computer instructions from the computer-readable storage medium to implement the method according to any one of claims 1 to 20.

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