CN117479130A

CN117479130A - Method, device and equipment for determining side link quality

Info

Publication number: CN117479130A
Application number: CN202210873208.9A
Authority: CN
Inventors: 张萌
Original assignee: Spreadtrum Communications Shanghai Co Ltd
Current assignee: Spreadtrum Communications Shanghai Co Ltd
Priority date: 2022-07-22
Filing date: 2022-07-22
Publication date: 2024-01-30

Abstract

The embodiment of the application provides a method, a device and equipment for determining the quality of a side uplink. The method comprises the following steps: acquiring resource information of each side link resource in a side link, wherein the side link resource is an interlaced resource or a physical resource block; and determining the link quality of the side link according to the resource information of each side link resource. The link quality of the side links may be determined.

Description

Method, device and equipment for determining side link quality

Technical Field

The embodiment of the application relates to the technical field of network communication, in particular to a method, a device and equipment for determining the quality of a side uplink.

Background

In a network communication system, different terminal devices may communicate via a sidelink (sidelink). Measurements may be made of the side link resources and the link quality determined from the measurements.

In the related art, in the case where the side-link resource is a non-shared spectrum resource, a measurement is generally made on a subchannel to determine the link quality of the side-link. However, when the side-link resources are shared spectrum resources, no measurements can be made of the sub-channels, which in turn results in no determination of the link quality of the side-link.

Disclosure of Invention

The embodiment of the application provides a method, a device and equipment for determining the quality of a side link, which are used for determining the link quality of the side link.

In a first aspect, an embodiment of the present application provides a method for determining a quality of a side uplink, including:

acquiring resource information of each side uplink resource in a side uplink, wherein the side uplink resource is an interlaced resource or a physical resource block;

and determining the link quality of the side link according to the resource information of the side link resources.

In one possible implementation, the link quality includes: channel busy rate CBR and/or channel occupancy CR.

In a possible embodiment, the resource information comprises signal quality and/or a resource status, which is an occupied status or an idle status.

In one possible embodiment, the CBR is: a ratio of a number of first side-link resources in the side-link to a total number of side-link resources in the side-link;

wherein the signal quality of the first side uplink resource is greater than or equal to a preset threshold.

In one possible embodiment, the CR is: a ratio of a number of second side-link resources in the side-link to a total number of side-link resources in the side-link;

Wherein the resource status of the second side uplink resource is an occupied status.

In one possible implementation, the signal quality is a strength indication RSSI of the received signal.

In one possible implementation, the side uplink resource is a shared spectrum resource.

In one possible embodiment, the method further comprises:

and performing congestion control on the side links according to the link quality of the side links.

In a second aspect, an embodiment of the present application provides a side-link quality determining apparatus, including: the acquisition module, the determination module, wherein,

the acquisition module is used for acquiring resource information of each side uplink resource in the side uplink, wherein the side uplink resource is an interlaced resource or a physical resource block;

the determining module is used for determining the link quality of the side link according to the resource information of the side link resources.

In one possible embodiment, the side-link quality determining apparatus further comprises control means:

the control device is used for performing congestion control on the side links according to the link quality of the side links.

In a third aspect, an embodiment of the present application provides a terminal device, including: a memory and a processor;

the memory stores computer-executable instructions;

The processor executing computer-executable instructions stored in the memory causes the processor to perform the sidelink quality method of any of the first aspects.

In a fourth aspect, embodiments of the present application provide a computer-readable storage medium having stored therein computer-executable instructions for performing the side-uplink quality method of any one of the first aspects when the computer-executable instructions are executed by a processor.

In a fifth aspect, embodiments of the present application provide a computer program product comprising a computer program which, when executed by a processor, implements the side-uplink quality method of any of the first aspects.

In a sixth aspect, an embodiment of the present application provides a chip, where a computer program is stored on the chip, and when the computer program is executed by the chip, the paging enhancement method in any one of the first aspects is implemented.

The embodiment of the application provides a method, a device and equipment for determining the quality of a side uplink, wherein terminal equipment can acquire the signal quality and/or the resource state of each side uplink resource in the side uplink, and determine the channel busy rate CBR and the channel occupancy rate CR according to the signal quality and/or the resource state of each side uplink resource. Since the side-link resources may be interlace resources or physical resource blocks, the interlace resources or physical resource blocks may be used as measurement granularity, the side-link resources are measured, and the link quality of the side-link.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive faculty for a person skilled in the art.

Fig. 1 is a schematic diagram of an application scenario provided in an embodiment of the present application;

fig. 2 is a schematic flow chart of a method for determining a side uplink quality according to an embodiment of the present application;

FIG. 3 is a schematic diagram of interleaving resources according to an embodiment of the present application;

fig. 4 is a schematic diagram of a physical resource block provided in an embodiment of the present application;

fig. 5 is a flow chart of another method for determining a quality of a side uplink according to an embodiment of the present application;

fig. 6 is a flow chart of yet another method for determining a side uplink quality according to an embodiment of the present application;

fig. 7 is a flowchart of yet another method for determining a side uplink quality according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a side-link quality determining apparatus according to an exemplary embodiment of the present application;

Fig. 9 is a schematic structural view of another side-link quality determining apparatus provided in an exemplary embodiment of the present application;

fig. 10 is a schematic structural diagram of a terminal device according to an exemplary embodiment of the present application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

The terms "first," "second," "third," "fourth" and the like in the description and in the claims of this application and in the above-described figures, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application described herein may be capable of operation in sequences other than those illustrated or described herein, for example. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The technical solution of the embodiment of the application can be applied to various communication systems, for example: long term evolution (Long Term Evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD), universal mobile telecommunications system (universal mobile telecommunication system, UMTS), worldwide interoperability for microwave access (worldwide interoperability for microwave access, wiMAX) telecommunications system, future fifth generation (5th Generation,5G) mobile telecommunications system, or new radio access technology (new radio Access Technology, NR). The 5G mobile communication system may include a non-independent Networking (NSA) and/or an independent networking (SA), among others.

The technical solutions provided herein may also be applied to machine-type communication (machine type communication, MTC), inter-machine communication long term evolution technology (Long Term Evolution-machine, LTE-M), device-to-device (D2D) networks, machine-to-machine (machine to machine, M2M) networks, internet of things (internet of things, ioT) networks, or other networks. The IoT network may include, for example, an internet of vehicles. The communication modes in the internet of vehicles system are generally called as vehicle to other devices (V2X, X may represent anything), for example, the V2X may include: vehicle-to-vehicle (vehicle to vehicle, V2V) communication, vehicle-to-infrastructure (vehicle to infrastructure, V2I) communication, vehicle-to-pedestrian communication (vehicle to pedestrian, V2P) or vehicle-to-network (vehicle to network, V2N) communication, etc.

The technical scheme provided by the application can also be applied to future communication systems, such as a sixth generation mobile communication system and the like. The present application is not limited in this regard.

In this embodiment of the present application, the network device may be any device having a wireless transceiver function. The apparatus includes, but is not limited to: an evolved Node B (eNB), a radio network controller (radio network controller, RNC), a Node B (Node B, NB), a base station controller (base station controller, BSC), a base transceiver station (base transceiver station, BTS), a home base station (home evolved NodeB, or a home Node B, HNB, for example), a Base Band Unit (BBU), an Access Point (AP) in a wireless fidelity (wireless fidelity, wiFi) system, a wireless relay Node, a wireless backhaul Node, a transmission point (transmission point, TP), or a transmission reception point (transmission and reception point, TRP), etc., may also be 5G, e.g., NR, a gNB in a system, or a transmission point (TRP or TP), one or a group of base stations (including multiple antenna panels) in a 5G system, or may also be a network Node constituting a gNB or a transmission point, such as a baseband unit (BBU), or a Distributed Unit (DU), etc.

In some deployments, the gNB may include a Centralized Unit (CU) and DUs. The gNB may also include an active antenna unit (active antenna unit, AAU). The CU implements part of the functionality of the gNB and the DU implements part of the functionality of the gNB. For example, the CU is responsible for handling non-real time protocols and services, implementing the functions of the radio resource control (radio resource control, RRC), packet data convergence layer protocol (packet data convergence protocol, PDCP) layer. The DUs are responsible for handling physical layer protocols and real-time services, implementing the functions of the radio link control (radio link control, RLC), medium access control (medium access control, MAC) and Physical (PHY) layers. The AAU realizes part of physical layer processing function, radio frequency processing and related functions of the active antenna. Since the information of the RRC layer may eventually become information of the PHY layer or be converted from the information of the PHY layer, under this architecture, higher layer signaling, such as RRC layer signaling, may also be considered to be transmitted by the DU or by the du+aau. It is understood that the network device may be a device comprising one or more of a CU node, a DU node, an AAU node. In addition, the CU may be divided into network devices in an access network (radio access network, RAN), or may be divided into network devices in a Core Network (CN), which is not limited in this application.

The network device provides services for the cell, and the terminal device communicates with the cell through transmission resources (e.g., frequency domain resources, or spectrum resources) allocated by the network device, where the cell may belong to a macro base station (e.g., macro eNB or macro gNB, etc.), or may belong to a base station corresponding to a small cell (small cell), where the small cell may include: urban cells (metro cells), micro cells (micro cells), pico cells (pico cells), femto cells (femto cells) and the like, and the small cells have the characteristics of small coverage area and low transmitting power and are suitable for providing high-rate data transmission services.

In the embodiments of the present application, the terminal device may also be referred to as a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user equipment.

The terminal device may be a device providing voice/data connectivity to a user, e.g., a handheld device with wireless connectivity, an in-vehicle device, etc. Currently, some examples of terminals may be: a mobile phone (mobile phone), a tablet (pad), a computer with wireless transceiver function (e.g., a notebook, a palm, etc.), a mobile internet device (mobile internet device, MID), a Virtual Reality (VR) device, an augmented reality (augmented reality, AR) device, a wireless terminal in an industrial control (industrial control), a wireless terminal in an unmanned (self-drive), a wireless terminal in a telemedicine (remote medical), a wireless terminal in a smart grid (smart grid), a wireless terminal in a transportation security (transportation safety), a wireless terminal in a smart city (smart city), a wireless terminal in a smart home (smart home), a cellular phone, a cordless phone, a session initiation protocol (session initiation protocol, SIP) phone, a wireless local loop (wireless local loop, WLL) station, a personal digital assistant (personal digital assistant, PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a wireless terminal in a wearable device, a land-based device, a future-mobile terminal in a smart city (smart city), a public network (35G) or a future mobile communication device, etc.

The wearable device can also be called as a wearable intelligent device, and is a generic name for intelligently designing daily wearing and developing wearable devices by applying a wearable technology, such as glasses, gloves, watches, clothes, shoes and the like. The wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also can realize a powerful function through software support, data interaction and cloud interaction. The generalized wearable intelligent device includes full functionality, large size, and may not rely on the smart phone to implement complete or partial functionality, such as: smart watches or smart glasses, etc., and focus on only certain types of application functions, and need to be used in combination with other devices, such as smart phones, for example, various smart bracelets, smart jewelry, etc. for physical sign monitoring.

Furthermore, the terminal device may also be a terminal device in an internet of things (Internet of things, ioT) system. IoT is an important component of future information technology development, and its main technical feature is to connect an item with a network through a communication technology, so as to implement man-machine interconnection and an intelligent network for object interconnection. IoT technology can enable massive connectivity, deep coverage, and terminal power saving through, for example, narrowband NB technology.

In addition, the terminal device may further include sensors such as an intelligent printer, a train detector, and a gas station, and the main functions include collecting data (part of the terminal device), receiving control information and downlink data of the network device, and transmitting electromagnetic waves to transmit uplink data to the network device.

The term "at least one" in the present application means one or more, and the term "plurality" means two or more. In addition, "equal to" may be used in conjunction with "greater than" or "less than" in this application. Under the condition of being equal to and being greater than, adopting a technical scheme of being greater than; under the condition of being used together with 'equal to' and 'less than', the technical scheme of 'less than' is adopted.

Fig. 1 is a schematic diagram of an application scenario provided in an embodiment of the present application, please refer to fig. 1, including a network device, a terminal device 1, and a terminal device 2. For example, the network device may be a base station, and the terminal device 1 and the terminal device 2 may be a vehicle, a mobile phone, a computer, a bracelet, or the like, respectively.

When the terminal device 1 and the terminal device 2 are within the coverage area of the network device, the terminal device 1 and the terminal device 2 may communicate with the network device, respectively, and the network device may provide a communication network for the terminal device 1 and the terminal device 2, allocate side link (sidelink) resources, and the like.

When at least one of the terminal device 1 and the terminal device 2 is not within the coverage of the network device, then the terminal device 1 and the terminal device 2 may communicate through allocated sidelink (sidelink) resources. The coverage area of the network can be expanded by the sidelink technology, and the load of the base station is lightened.

In the embodiment of the present application, the side link resource may be an interleaved (Interlace) resource or a physical resource block (Physical Resource Block, PRB), and then the side link resource may be measured to determine the link quality of the side link with the interleaved resource or the physical resource block as the measurement granularity.

The technical scheme shown in the application is described in detail through specific embodiments. It should be noted that the following embodiments may exist alone or in combination with each other, and for the same or similar content, the description will not be repeated in different embodiments.

Fig. 2 is a schematic flow chart of a method for determining a side uplink quality according to an embodiment of the present application. Referring to fig. 2, the method may include:

s201, acquiring resource information of each side link resource in the side links.

The execution body of the embodiment of the application may be a terminal device, or may be a chip, a chip module, a side uplink quality determining device or the like that is provided in the terminal device. The side-link quality determining means may be implemented by software or by a combination of software and hardware. The side-uplink quality determination means may be a processor in the terminal device. For ease of understanding, the execution subject will be described hereinafter as an example of a terminal device.

The sidelink refers to a communication link between one terminal device and another terminal device.

The side uplink resources may be interleaved resources or physical resource blocks.

The side-link resource may be a resource of a physical sidelink shared channel (Pysical Sidelink Share Channel, PSSCH), or may be a resource that may be used for sidelink transmission.

Next, the interlace resource will be described with reference to fig. 3, and the physical resource block will be described with reference to fig. 4.

Fig. 3 is a schematic diagram of an interleaved resource provided in the embodiment of the present application, please refer to fig. 3, in which if a side uplink resource is a shared spectrum resource, the side uplink resource may be divided into a plurality of sub-interleaved resources in an interleaved manner, and each interleaved resource may include at least one sub-interleaved resource.

The number of interleaved resources in the side-link, the number of sub-interleaved resources comprised by the interleaved resources may be independently configured by higher layer signaling, or by pre-configuration, or by a predefined manner. The sub-interleaving resource may be 1 physical resource block or a plurality of physical resource blocks or 1 physical resource unit or a plurality of physical resource units. As shown in fig. 3, for example, the side uplink may be divided into 18 sub-interlace resources, sub-interlace resource 1, sub-interlace resource 2, and sub-interlace resource 3 are distributed in an interlace, and 6 sub-interlace resources 1 may be included in interlace resource 1. Likewise, 6 sub-interlace resources 2 may be included in interlace resource 2, and 6 sub-interlace resources 3 may be included in interlace resource 3.

The number of sub-interleaved resources and the number of interleaved resources are examples, and do not limit the actual number.

Fig. 4 is a schematic diagram of a physical resource block provided in the embodiment of the present application, referring to fig. 4, a side uplink may be divided into a plurality of physical resource blocks according to frequencies, where one physical resource block is formed by 12 subcarriers in a frequency domain.

The resource information may include signal quality and/or resource status.

The signal quality may be represented by a strength indication (Received Signal Strength Indicator, RSSI) of the received signal. Where the unit of RSSI may be decibel milliwatts (dBm), which is a unit representing the absolute value of power. The RSSI decays with increasing distance. For example, the RSSI value for one side uplink resource may be-60 dBm.

The resource state may be classified as either an occupied state or an idle state. If the side link resource is already transmitted or is to be used for transmitting data packets within a certain time slot range, the resource state of the side link resource is in an occupied state, otherwise, the side link resource is in an idle state.

The terminal device may obtain the resource information of each side uplink resource in the side uplink, i.e. may obtain the RSSI value and the resource status of the interleaved resource or the physical resource block.

S202, determining the link quality of the side link according to the resource information of the side link resources.

The link quality may include a channel busy rate (Channel Busy Ratio, CBR) and/or a channel occupancy (Channel Occupancy Ratio, CR).

CBR may be defined as: a ratio of a number of first side-link resources in the side-link to a total number of side-link resources in the side-link; wherein the signal quality of the first side link resource is greater than or equal to a preset threshold.

The preset threshold may be a value configured by the network device for the terminal device through higher layer signaling, or a value set in advance through a preset manner, or through a predefined manner. For example, the preset threshold may be-60 dBm, then side-link resources greater than-60 dBm are first side-link resources.

For example, if the total number of side-link resources is 100, where the number of first side-link resources is 80, cbr=80%.

CR may be defined as: a ratio of the number of second sidelink resources in the sidelink to the total number of sidelink resources in the sidelink; wherein the resource status of the second side uplink resource is an occupied status.

For example, if the total number of side-link resources is 100, where the number of occupied second side-link resources is 70, cr=70%.

Alternatively, after CBR and CR in the side link are determined, congestion control of the side link may be performed according to the CBR and CR.

In the embodiment of the present application, the terminal device may acquire the signal quality and/or the resource status of each side uplink resource in the side uplink, and determine the channel busy rate CBR and the channel occupancy CR according to the signal quality and/or the resource status of each side uplink resource. Since the sidelink resources may be interleaved resources or physical resource blocks, the interleaved resources or physical resource blocks may be used as measurement granularity to measure the sidelink resources to determine the link quality of the sidelink.

Since the side-link resources may be interlace resources or physical resource blocks, the method for determining the quality of the side-link will be further described below with reference to fig. 5 when the side-link resources are interlace resources, based on the embodiment shown in fig. 2; the method of determining the quality of the side link will be further described with reference to fig. 6 when the side link resource is a physical resource block.

Fig. 5 is a flow chart of another method for determining a quality of a side uplink according to an embodiment of the present application, please refer to fig. 5, which includes:

s501, acquiring resource information of staggered resources in a side uplink.

The terminal device may obtain the RSSI values and/or the resource status of each interleaved resource in the side uplink.

Alternatively, the measurement window may be set to time slot [ n-a, n-1], and the terminal device may measure the RSSI value of the interleaved resources received on the physical Sidelink control channel (Pysical Sidelink Control Channel, PSCCH), or PSSCH, within time slot [ n-a, n-1 ].

Wherein a can be determined to be 100 or 100 x 2 according to higher layer parameters ^μ Time slots.

S502, determining the link quality of the side uplink according to the resource information of the staggered resource.

The link quality includes a channel busy rate CBR and/or a channel occupancy CR.

In an alternative embodiment, the CBR at time slot n may be defined as: within the CBR measurement window [ n-a, n-1], the ratio of the number of first interleaved resources in the side-link to the total number of interleaved resources in the side-link; wherein the signal quality of the first interleaved resource is greater than or equal to a preset threshold.

It should be noted that:

(1) The CBR calculation is in the time slot range of the measured RSSI.

(2) If the number of slots measuring RSSI is below the first preset threshold within the CBR measurement window, a preconfigured CBR may be used. For example, if the number of slots for measuring RSSI is 50, the first preset threshold is set to 100slots, and the preconfigured CBR is 70%, the terminal device may determine 70% as the calculated CBR.

(3) The definition of CBR may be applied to the same frequency signal or different frequency signal in the radio resource control (Radio Resource Control, RRC) idle state, the same frequency signal or different frequency signal in the RRC connected state.

For example, if the preset threshold is-60 dBm, if the number of first interleaved resources with RSSI greater than or equal to-60 dBm in the side link is 88 and the total number of interleaved resources is 100 within the CBR measurement window [ n-a, n-1], it may be determined that CBR is 88/100=88%.

In an alternative embodiment, CR at time slot n may be defined as: a ratio of the number of second interleaved resources in the side-link to the total number of interleaved resources in the side-link. Wherein the resource status of the second interleaved resources is an occupied status and the number of the second interleaved resources is equal to the number of all interleaved resources for transmission in the time slot [ n-a, n-1], plus the number of interleaved resources to be used for transmission in the time slot [ n, n+b ]. The total number of interleaved resources is the total number of all interleaved resources configured within the slot n-a, n + b.

Wherein a is a positive integer, b is 0 or a positive integer; a and b may be determined by the terminal device, and a and b satisfy: a+b+1=1000 or 1000×2 ^μ Time slot, b<(a+b+1)/2, and n+b must not exceed the last transmission time determined by the schedule corresponding to the current transmission.

Note that, the CR may perform calculation according to the priority of the data packet. Alternatively, the priority of the packets may be classified into 8 levels, 1 level, 2 level, … …,8 level, respectively. Wherein, the priority of 1 level is highest, and the priority reduces in proper order, and the priority of 8 levels is minimum.

For example, if there are 200 packets to be transmitted in the slot [ n-a, n+b ], the total number of interleaved resources is 500. The number of priority packets and the number of second interleaving resources used are shown in table 1:

TABLE 1

Since the total number of interleaving resources is 500, CR is calculated according to the priority of the data packet, if CR (1) corresponding to priority 1 in the side uplink can be represented by CR (1), then since 20 data packets with priority 1 occupy 60 second interleaving resources, CR (1) =60/500=12%. Likewise, other priority corresponding CRs can be calculated as shown in table 1.

S503, according to the link quality of the side links, the congestion control is carried out on the side links.

Congestion refers to the fact that the demand for side-link resources exceeds the available side-link resources, resulting in increased side-link load and poor performance.

The congestion control is to improve the utilization rate of the side uplink resources and reduce the packet loss rate.

After the terminal device determines CBR and CR, it may adjust its transmission parameters according to CBR and CR to perform congestion control on the side link.

Alternatively, the terminal device may determine a corresponding CR limit (CR-limit) condition in the RRC signaling according to the CBR, and determine whether the CR value corresponding to each priority satisfies the CR-limit condition. If not, the terminal device can adjust its own transmission parameters to make the CR values corresponding to all priorities meet the CR-limit condition, so as to achieve the purpose of congestion control.

The RRC signaling may be configured by the network device for the terminal device, and the RRC signaling may include a plurality of preconfigured parameters. For example, an upper and lower limit of the number of usable resources may be included in the RRC signaling.

In an alternative embodiment, the CR-limit condition may be: sigma (sigma) _i≥k CR(i)≤CR _limit (k)

Wherein i represents priority, CR (i) represents CR value corresponding to the ith priority, and k represents CR _limit Priority, CR of (C) _limit (k) CR representing kth priority _limit Values.

If the inequality is expanded _i≥k CR(i)≤CR _limit (k) The inequality corresponding to each priority is:

the terminal device can determine CR corresponding to each priority in RRC signaling according to CBR _limit And determining the CR value corresponding to each priority, and judging whether the CR value corresponding to each priority meets the inequality corresponding to all the priorities.

For example, if the CR values corresponding to the priorities are shown in Table 1, the priorities are determined in RRC signaling according to CBRCR of stage correspondence _limit The method comprises the following steps of: CR (computed radiography) _limit (1) 95% CR _limit (2) 90% CR _limit (3) 80%, CR _limit (4) 70%, CR _limit (5) 60% CR _limit (6) 50% CR _limit (7) 40% CR _limit (8) 30%, the CR value and CR corresponding to each priority level can be calculated _limit Substituting the inequality corresponding to the priority, the calculation is as follows:

Since the sum of CR values corresponding to the priorities is calculated to be 99.8 percent, the CR value is larger than CR _limit (1) The inequality corresponding to the 1 st priority is not satisfied, and the inequality corresponding to all priorities is not satisfied.

Optionally, if the CR value corresponding to each priority does not satisfy all inequalities, the terminal device may adjust its own transmission parameters in the following 5 manners:

mode 1, discard packet: the terminal device may decide by the application layer that certain data packets may be discarded while maintaining reserved interlace resources.

Mode 2, changing the number of transmissions per packet: the terminal device adjusts the transmission parameters of the data packet to 1 time, i.e. does not retransmit.

Mode 3, adjusting modulation coding scheme (Modulation Coding Scheme, MCS): the terminal device reduces the amount of interleaved resources occupied by the data packets by using a higher level MCS.

Mode 4, reducing the number of reserved staggered resources: the terminal device may reduce the number of interleaved resources reserved by itself.

Mode 5, power reduction: reducing power may reduce CBR. If CBR is lower than a certain threshold, it may be reduced to another CBR interval, and a new CR-limit condition may be associated, and the CR values associated with all priorities may be allowed to satisfy the CR-limit condition.

For example, if the CR values corresponding to the priorities are shown in Table 1, each priorityCR corresponding to the first stage _limit The method comprises the following steps of: CR (computed radiography) _limit (1) 95% CR _limit (2) 90% CR _limit (3) 80%, CR _limit (4) 70%, CR _limit (5) 60% CR _limit (6) 50% CR _limit (7) 40% CR _limit (8) 30%. The terminal device can choose to discard the data packet of 8 th priority, CR (8) is 0%, and CR value and CR corresponding to each priority can be re-used _limit Substituting the inequality, the calculation results in the following:

the CR values corresponding to the priorities can satisfy the inequality corresponding to all the priorities, thereby achieving the purpose of congestion control. The terminal device may transmit the 1 st to 7 th priority packets and discard the 8 th priority packets.

Optionally, before the terminal device performs congestion control according to CBR and CR, if the terminal device is in the coverage area of the network device, the terminal device may also send CBR to the network device.

The manner of transmitting the CBR may include the following 2 manners:

mode 1, CBR is sent periodically to a network device.

For example, if the transmission period is set to 100 ms, the terminal device may transmit the CBR measured most recently to the terminal device every 100 ms.

Mode 2, when the CBR is greater than a second preset threshold, sending the CBR to the network device.

The second preset threshold may be determined by higher layer signaling configuration or by a preconfigured manner or by a predefined manner.

For example, if the second preset threshold is 90% and the measured CBR is 92%, the terminal device may send the CBR (92%) to the network device.

Alternatively, the manner in which the terminal device sends CBR to the network device may be configured by RRC signaling.

In this embodiment of the present application, the terminal device may acquire signal quality and/or resource status of each interlace resource in the sidelink, and determine, according to the signal quality and/or resource status of each interlace resource, a channel busy rate CBR and a channel occupancy CR, so as to perform congestion control according to the channel busy rate CBR and the channel occupancy CR. Since the sidelink resources may be staggered resources, the staggered resources may be measured as measurement granularity to determine the link quality of the sidelink.

Fig. 6 is a schematic flow chart of another method for determining a side link quality according to an embodiment of the present application, please refer to fig. 6, the method includes:

s601, acquiring resource information of a physical resource block in a side uplink.

The terminal device may obtain the RSSI values and/or the resource status of each physical resource block in the side uplink.

Alternatively, the measurement window of the CBR may be set to be the time slot [ n-a, n-1], and the terminal device may measure the RSSI value of the physical resource block in the time slot [ n-a, n-1 ].

Wherein a=100 or 100×2 can be determined according to higher layer parameters ^μ Time slots.

S602, determining the link quality of the side uplink according to the resource information of the physical resource block.

In an alternative embodiment, the CBR at time slot n may be defined as: within the CBR measurement window [ n-a, n-1], a ratio of the number of first physical resource blocks in the sidelink to the total number of physical resource blocks in the sidelink; wherein the signal quality of the first physical resource block is greater than or equal to a preset threshold.

It should be noted that:

(1) The CBR calculation is in the time slot range of the measured RSSI.

(2) If the number of slots measuring RSSI is below a first preset threshold within the CBR measurement window, a preconfigured CBR value may be used.

For example, if the preset threshold is-70 dBm, if the number of first physical resource blocks with RSSI greater than or equal to-70 dBm in the side link is 75 and the total number of physical resource blocks is 120 within the CBR measurement window [ n-a, n-1], it may be determined that CBR is 75/120=62.5%.

In an alternative embodiment, CR at time slot n may be defined as: the ratio of the number of physical resource blocks in the side link to the total number of physical resource blocks in the side link. Wherein the resource status of the second physical resource block is an occupied status, and the number of the second resource blocks is equal to the number of all physical resource blocks used for transmission in the slot [ n-a, n-1], plus the number of physical resource blocks to be used for transmission in the slot [ n, n+b ]. The total number of physical resource blocks is the total number of all physical resource blocks configured within the slot n-a, n + b.

Wherein a is a positive integer, b is 0 or a positive integer; a and b may be determined by the terminal device, and a and b satisfy: a+b+1=1000 or 1000×2 ^μ Time slot, b<(a+b+1)/2, and n+b must not exceed the last transmission time indicated by the current transmission corresponding schedule.

For example, if there are 300 data packets to be transmitted in the slot [ n-a, n+b ], the total number of physical resource blocks is 1000. Wherein, there are 100 physical resource blocks reserved by the terminal device, and 900 usable physical resource blocks. The number of priority packets, and the number of physical resource blocks used, may be as shown in table 2:

TABLE 2

Since there are 900 available physical resource blocks, CR is calculated according to the priority of the data packet, if CR (1) corresponding to priority 1 in the side uplink can be represented by CR (1), then since there are 37 data packets with priority 1, the number of occupied physical resource blocks is 110, and CR (1) =110/900=12.2%. Likewise, other priority corresponding CRs can be calculated as shown in table 2.

And S603, performing congestion control on the side links according to the link quality of the side links.

Optionally, the terminal device may determine a corresponding CR limit (CR-limit) condition in the RRC signaling according to the CBR, and determine whether the CR value corresponding to each priority meets the CR-limit condition, and if not, the terminal device may adjust its transmission parameters so that the CR values corresponding to all priorities meet the CR-limit condition, so as to achieve the purpose of congestion control.

For example, if the CR values corresponding to the priorities are as shown in Table 2, the CR corresponding to the priorities is determined in the RRC signaling according to the CBR _limit The method comprises the following steps of: CR (computed radiography) _limit (1) 100%, CR _limit (2) 85%, CR _limit (3) 80%, CR _limit (4) 70%, CR _limit (5) 60% CR _limit (6) 50% CR _limit (7) 30% CR _limit (8) 20%, the CR value and CR corresponding to each priority can be calculated _limit Substituting the inequality can be calculated as follows:

since the CR value corresponding to each priority does not satisfy the inequality corresponding to the 2 nd priority, if the number of the reserved physical resource blocks originally reserved by the terminal device is 100, the terminal device may reduce the number of the reserved physical resource blocks to be 0, so that the available physical resource blocks are 1000, and may recalculate the CR value corresponding to each priority, as shown in table 3:

TABLE 3 Table 3

The CR values corresponding to the priorities in table 3 may be substituted into the inequality again, and then calculated as follows:

the CR values corresponding to the priorities can satisfy the inequality corresponding to all the priorities, thereby achieving the purpose of congestion control.

Optionally, before the terminal device performs congestion control according to CBR and CR, if the terminal device is in the coverage area of the network device, the terminal device may also send CBR to the network device. The manner in which CBR is sent may be configured by RRC signaling.

In the embodiment of the present application, the terminal device may acquire the signal quality and/or the resource status of each physical resource block in the side uplink, and determine the channel busy rate CBR and the channel occupancy CR according to the signal quality and/or the resource status of each physical resource block, so as to perform congestion control according to the channel busy rate CBR and the channel occupancy CR. Since the sidelink resources may be physical resource blocks, the physical resource blocks may be measured as measurement granularity to determine the link quality of the sidelink.

In the embodiments shown in fig. 5 and 6, the measurement may be performed using interleaved resources and physical resource blocks, respectively, as measurement granularity. Alternatively, the staggered resources may be scaled to sub-channels and CBR and CR calculated. Next, a method of converting the interlace resource into a subchannel and determining the side-link quality will be described with reference to fig. 7.

Fig. 7 is a schematic flow chart of another method for determining a side link quality according to an embodiment of the present application, please refer to fig. 7, the method includes:

s701, acquiring resource information of staggered resources in a side uplink.

It should be noted that, the specific process of step S701 may refer to S501, and will not be described herein.

S702, converting the staggered resource into a sub-channel according to the resource information of the staggered resource so as to determine the link quality of the side uplink.

In an alternative embodiment, the CBR at time slot n may be defined as: within the CBR measurement window [ n-a, n-1], the ratio of the number of first subchannels in the sidelink to the total number of subchannels in the sidelink; wherein the signal quality of the first sub-channel is greater than or equal to a preset threshold.

It should be noted that:

(1) The CBR calculation is in the time slot range of the measured RSSI.

(4) The number of sub-channels may be scaled according to the number of interleaving resources. Specifically, if one sub-channel includes X physical resource blocks and one interleaving resource includes Y physical resource blocks, one interleaving resource corresponds to Y/X sub-channels, and then:

Total number of subchannels = total number of interleaved resources Y/X

Total number of first sub-channels = total number of first interleaved resources Y/X

For example, if the terminal device determines that the total number of interleaved resources in the side uplink is 100, and one interleaved resource includes 30 physical resource blocks, and if one subchannel is set to include 8 physical resource blocks, the total number of subchannels is 100×30/8=378.

Alternatively, Y/X may be rounded up or rounded down on a rounding basis. For example, if Y/x=3.6, then it may be rounded up to 4; if Y/x=3.2, then it can be rounded down to 3.

Optionally, a nearby rounding of Y/X may also be performed. For example, if Y/x=5.3, then it may be rounded to 5; if Y/x=5.7, then the rounding can be made to 6.

For example, if the preset threshold is-60 dBm, if the number of first interleaved resources with RSSI greater than or equal to-60 dBm in the side uplink is 88 and the total number of interleaved resources is 100 in the CBR measurement window [ n-a, n-1], if one interleaved resource includes 30 physical resource blocks and one sub-channel includes 8 physical resource blocks, the number of first sub-channels can be converted to 88×30/8=330 and the total number of sub-channels is 375, and it can be determined that CBR is 330/375=88%.

In an alternative embodiment, CR at time slot n may be defined as: the ratio of the number of second subchannels in the side-link to the total number of subchannels in the side-link. Wherein the resource status of the second sub-channel is an occupied status and the number of the second sub-channels is equal to the number of all sub-channels for transmission in the time slot [ n-a, n-1], plus the number of sub-channels to be used for transmission in the time slot [ n, n+b ]. The total number of subchannels is the total number of all subchannels configured within time-slot n-a, n + b.

Wherein a is a positive integer, b is 0 or a positive integer; a and b may be determined by the terminal device, and a and b satisfy: a+b+1=1000 or 1000×2 ^μ Time slot, b<(a+b+1)/2, and n+b must not exceed the last transmission time of the current transmission.

Likewise, the number of second sub-channels may be scaled according to the number of second interleaved resources.

The terminal device may convert the number of interleaved resources into the number of subchannels, calculate CBR and CR according to the number of subchannels, and further determine the link quality of the side-link.

S703, performing congestion control on the side link according to the link quality of the side link.

It should be noted that, the specific process of step S701 may refer to step S503 or step S603, and will not be described herein.

In the embodiment of the application, the terminal device may acquire the signal quality and/or the resource status of each staggered resource in the side uplink, and may convert the staggered resource into a sub-channel, thereby determining the channel busy rate CBR and the channel occupancy CR, and further may perform congestion control according to the channel busy rate CBR and the channel occupancy CR. Since the number of the sub-channels can be obtained by scaling according to the number of the staggered resources, the measurement result can be determined according to the number of the sub-channels, and the link quality of the side uplink can be determined according to the measurement result.

Fig. 8 is a schematic structural diagram of a side-link quality determining apparatus according to an exemplary embodiment of the present application. The side-link quality determination means may be a chip or a chip module. Referring to fig. 8, the side-link quality determining apparatus 10 includes an acquisition module 11, a determining module 12, wherein,

the acquiring module 11 is configured to acquire resource information of each side uplink resource in a side uplink, where the side uplink resource is an interleaved resource or a physical resource block;

The determining module 12 is configured to determine a link quality of the side link according to the resource information of the side link resources.

The side uplink quality determining device provided in the embodiment of the present application may execute the technical solution shown in the foregoing method embodiment, and its implementation principle and beneficial effects are similar, and will not be described herein again.

Fig. 9 is a schematic structural view of another side-link quality determining apparatus provided in an exemplary embodiment of the present application. The side-link quality determination means may be a chip or a chip module. On the basis of the embodiment shown in fig. 8, referring to fig. 9, the side-link quality determining apparatus 10 further comprises a control module 13,

the control device 13 is configured to perform congestion control on the side link according to the link quality of the side link.

An exemplary embodiment of the present application provides a schematic structural diagram of a terminal device, referring to fig. 10, the terminal device 20 may include a processor 21 and a memory 22. The processor 21, the memory 22, and the like are illustratively interconnected by a bus 23.

The memory 22 stores computer-executable instructions;

the processor 21 executes computer-executable instructions stored in the memory 22, causing the processor 21 to perform the side-uplink quality determination method as shown in the method embodiments described above.

All or part of the steps for implementing the method embodiments described above may be performed by hardware associated with program instructions. The foregoing program may be stored in a readable memory. The program, when executed, performs steps including the method embodiments described above; and the aforementioned memory (storage medium) includes: read-only memory (ROM), RAM, flash memory, hard disk, solid state disk, magnetic tape, floppy disk, optical disk, and any combination thereof.

Accordingly, embodiments of the present application provide a computer readable storage medium having stored therein computer executable instructions for implementing the side uplink quality determination method described in the above method embodiments when the computer executable instructions are executed by a processor.

Accordingly, embodiments of the present application may also provide a computer program product, including a computer program, which when executed by a processor may implement the method for determining a quality of a side uplink as shown in the above-described method embodiments.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various modifications and variations can be made to the embodiments of the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the embodiments of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to encompass such modifications and variations.

In the present application, the term "include" and variations thereof may refer to non-limiting inclusion; the term "or" and variations thereof may refer to "and/or". The terms "first," "second," and the like in this application are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. In the present application, "plurality" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.

Claims

1. A method for determining a quality of a side link, comprising:

2. The method of claim 1, wherein the link quality comprises: channel busy rate CBR and/or channel occupancy CR.

3. The method according to claim 2, wherein the resource information comprises signal quality and/or a resource status, the resource status being either an occupied status or an idle status.

4. A method according to claim 2 or 3, characterized in that,

the CBR is: a ratio of a number of first side-link resources in the side-link to a total number of side-link resources in the side-link;

5. A method according to claim 2 or 3, characterized in that,

the CR is as follows: a ratio of a number of second side-link resources in the side-link to a total number of side-link resources in the side-link;

6. A method according to claim 3, characterized in that the signal quality is the strength indication RSSI of the received signal.

7. The method according to any of claims 1-6, wherein the side-link resource is a shared spectrum resource.

8. The method according to any one of claims 1-7, further comprising:

9. A side-link quality determining apparatus, comprising: the acquisition module, the determination module, wherein,

10. A terminal device, comprising: a memory and a processor;

the memory stores computer-executable instructions;

the processor executing computer-executable instructions stored in the memory, causing the processor to perform the side-link quality determination method of any one of claims 1 to 8.

11. A computer readable storage medium having stored therein computer executable instructions for implementing the side-link quality determination method of any of claims 1 to 8 when executed by a processor.

12. A computer program product comprising a computer program which, when executed by a processor, implements the side-link quality determination method of any of claims 1 to 8.