Direct connection communication method and device, and storage medium

Abstract

The present disclosure relates to a kind of direct communication method, device and storage medium.Therein, direct communication method includes determining direct ranging resource set configuration parameter, and based on the direct ranging resource set configuration parameter, determine direct ranging resource;Through the direct ranging resource transmission direct ranging signal.Through the present disclosure, the allocation of the direct ranging resource of direct ranging signal in the process of direct communication is realized, and direct ranging is carried out.

Description

Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to direct communication methods, apparatus and storage media. Background Technology

[0002] The continuous emergence of new-generation Internet applications is driving the continuous evolution of wireless communication technologies to meet the needs of these applications.

[0003] Applications and services based on distance and angle between user devices are constantly emerging. Measuring distance and angle via wireless signals can effectively utilize the wireless communication capabilities of user devices and introduce new user device capabilities. Terminals and wireless network devices that support ranging functions can more conveniently control and operate distance and angle measurements, and can be applied to various commercial and vertical application scenarios, including product display, smart homes, smart cities, smart transportation, and smart retail.

[0004] With the development of next-generation 5G mobile communication technology, 3GPP Rel-16 has studied the technology of using uplink and downlink transmissions on the New Ratio (NR) cellular communication network for user equipment positioning. However, how to utilize NR direct-link communication links for inter-user ranging has not yet been discussed. 3GPP Rel-16 supports sidelink communication for vehicle-to-everything (V2X) scenarios. Using sidelink communication links for inter-user ranging or positioning will become possible in subsequent versions of NR. However, how to provide direct-link ranging resources for the direct-link ranging signals used for direct-link ranging or positioning needs further research. Summary of the Invention

[0005] To overcome the problems existing in related technologies, this disclosure provides a direct communication method, apparatus and storage medium.

[0006] According to a first aspect of the present disclosure, a direct communication method is provided, the direct communication method comprising:

[0007] Determine the configuration parameters of the direct ranging resource set, and based on the configuration parameters, determine the direct ranging resources; transmit the direct ranging signal through the direct ranging resources.

[0008] In one implementation, determining the configuration parameters of the direct-connect ranging resource set includes:

[0009] Receive first downlink control information sent by the network device, and determine the configuration parameters of the direct ranging resource set based on the first downlink control information; or, determine the configuration parameters of the direct ranging resource set based on the first pre-configuration information.

[0010] In one embodiment, the direct ranging resource set configured by the direct ranging resource set configuration parameters is a periodic direct ranging resource set.

[0011] In one embodiment, the configuration parameters of the direct-connect ranging resource set include at least one of the following:

[0012] Period length; number of direct ranging resources in each group within the period and time interval; time domain start position and time domain length of each group of direct ranging resources in the time unit within the period; frequency domain start position and frequency domain length of each group of direct ranging resources in the time unit within the period.

[0013] In one embodiment, the periodic direct-connect ranging resource set includes one or more sets of direct-connect ranging resources in each resource period, and each set of direct-connect ranging resources includes one or more direct-connect ranging resources, with each direct-connect ranging resource being a resource within the same time unit.

[0014] In one implementation, each direct-connect ranging resource within the same group has the same position and size within a time unit.

[0015] In one embodiment, the same resource period includes multiple sets of directly connected ranging resources, and the multiple sets of directly connected ranging resources reuse time-domain resources in a time-division manner and / or reuse frequency-domain resources in a frequency-division manner.

[0016] In one implementation, determining the direct ranging resources based on the configuration parameters of the direct ranging resource set includes:

[0017] The system receives second downlink control information sent by the network device and determines direct ranging resources in the set of direct ranging resources configured by the direct ranging resource configuration parameters based on the second downlink control information; or, it determines direct ranging resources in the set of direct ranging resources configured by the direct ranging resource configuration parameters based on predefined rules.

[0018] In one embodiment, transmitting the direct ranging signal through the direct ranging resource includes:

[0019] Different direct ranging signals are transmitted based on the same direct ranging resource.

[0020] In one embodiment, transmitting different direct ranging signals based on the same direct ranging resource includes:

[0021] Frequency domain resources are reused using a comb-shaped frequency division multiplexing method within the same direct-connection ranging resource.

[0022] In one embodiment, the direct communication method further includes: receiving third downlink control information sent by a network device, and determining a comb frequency division multiplexing factor based on the third downlink control information; or, determining a comb frequency division multiplexing factor based on second pre-configuration information; wherein the comb frequency division multiplexing factor is used to indicate the configuration information of resource elements occupied when using comb frequency division multiplexing to reuse frequency domain resources.

[0023] In one embodiment, the third downlink control information and / or the second pre-configuration information are used to configure the comb frequency division multiplexing factor for each directly connected ranging resource, or to configure the comb frequency division multiplexing factor for the set of directly connected ranging resources.

[0024] In one embodiment, the direct-connect ranging resource set configuration parameters are used to configure multiple different direct-connect ranging resource sets.

[0025] In one embodiment, the configuration parameters of the direct ranging resource set include a comb frequency division multiplexing factor, and the comb frequency division multiplexing factor is different for different direct ranging resource sets.

[0026] In one embodiment, transmitting the direct ranging signal through the direct ranging resource includes at least one of the following:

[0027] The direct ranging signal is transmitted using direct ranging resources with the same frequency domain bandwidth as the direct ranging resource set; the direct ranging signal is transmitted using direct ranging resources with the same time domain length as the direct ranging signal; the direct ranging signal is transmitted using a period that is an integer multiple of the period of the direct ranging resource set; the direct ranging signal is repeatedly transmitted within a group of direct ranging resources in the same period, and the number of times the direct ranging signal is repeatedly transmitted is less than or equal to the number of direct ranging resources in the corresponding group.

[0028] According to a second aspect of the present disclosure, a direct communication device is provided, the direct communication device comprising:

[0029] The processing unit is configured to determine the configuration parameters of the direct ranging resource set and, based on the configuration parameters, determine the direct ranging resources; the communication unit is configured to transmit the direct ranging signal through the direct ranging resources.

[0030] In one embodiment, the communication unit receives first downlink control information sent by the network device, and the processing unit determines direct ranging resource set configuration parameters based on the first downlink control information. Alternatively, the processing unit determines the direct ranging resource set configuration parameters based on first pre-configuration information.

[0031] In one embodiment, the direct ranging resource set configured by the direct ranging resource set configuration parameters is a periodic direct ranging resource set.

[0032] In one embodiment, the configuration parameters of the direct-connect ranging resource set include at least one of the following:

[0033] Period length; number of direct ranging resources in each group within the period and time interval; time domain start position and time domain length of each group of direct ranging resources in the time unit within the period; frequency domain start position and frequency domain length of each group of direct ranging resources in the time unit within the period.

[0034] In one embodiment, the periodic direct-connect ranging resource set includes one or more sets of direct-connect ranging resources in each resource period, and each set of direct-connect ranging resources includes one or more direct-connect ranging resources, with each direct-connect ranging resource being a resource within the same time unit.

[0035] In one implementation, each direct-connect ranging resource within the same group has the same position and size within a time unit.

[0036] In one embodiment, the same resource period includes multiple sets of directly connected ranging resources, and the multiple sets of directly connected ranging resources reuse time-domain resources in a time-division manner and / or reuse frequency-domain resources in a frequency-division manner.

[0037] In one embodiment, the communication unit receives second downlink control information sent by the network device, and the processing unit determines direct ranging resources in the direct ranging resource set configured by the direct ranging resource configuration parameters based on the second downlink control information; or, the processing unit determines direct ranging resources in the direct ranging resource set configured by the direct ranging resource configuration parameters based on predefined rules.

[0038] In one embodiment, the communication unit transmits different direct ranging signals based on the same direct ranging resource.

[0039] In one embodiment, the communication unit uses a comb-shaped frequency division multiplexing method to reuse frequency domain resources in the same direct ranging resource.

[0040] In one embodiment, the communication unit is further configured to receive third downlink control information sent by the network device, and determine a comb frequency division multiplexing factor based on the third downlink control information; or, determine a comb frequency division multiplexing factor based on second pre-configuration information; the comb frequency division multiplexing factor is used to indicate the configuration information of the resource elements occupied when using comb frequency division multiplexing to reuse frequency domain resources.

[0041] In one embodiment, the third downlink control information and / or the second pre-configuration information are used to configure the comb frequency division multiplexing factor for each directly connected ranging resource, or to configure the comb frequency division multiplexing factor for the set of directly connected ranging resources.

[0042] In one embodiment, the direct-connect ranging resource set configuration parameters are used to configure multiple different direct-connect ranging resource sets.

[0043] In one embodiment, the configuration parameters of the direct ranging resource set include a comb frequency division multiplexing factor, and the comb frequency division multiplexing factor is different for different direct ranging resource sets.

[0044] In one embodiment, the communication unit transmits the direct ranging signal through the direct ranging resource using at least one of the following methods:

[0045] The direct ranging signal is transmitted using direct ranging resources with the same frequency domain bandwidth as the direct ranging resource set; the direct ranging signal is transmitted using direct ranging resources with the same time domain length as the direct ranging signal; the direct ranging signal is transmitted using a period that is an integer multiple of the period of the direct ranging resource set; the direct ranging signal is repeatedly transmitted within a group of direct ranging resources in the same period, and the number of times the direct ranging signal is repeatedly transmitted is less than or equal to the number of direct ranging resources in the corresponding group.

[0046] According to a third aspect of the present disclosure, a direct communication device is provided, comprising:

[0047] Processor; memory used to store processor-executable instructions;

[0048] The processor is configured to execute the direct communication method described in the first aspect or any embodiment of the first aspect.

[0049] According to a fourth aspect of the present disclosure, a storage medium is provided, the storage medium storing instructions that, when executed by a processor of a user equipment, enable the user equipment to perform the direct communication method described in the first aspect or any embodiment of the first aspect.

[0050] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects: Based on the configuration parameters of the direct ranging resource set, the direct ranging resources are determined, and the time and frequency resources occupied by the direct ranging signal in direct ranging or positioning are determined, thereby facilitating direct ranging or positioning.

[0051] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0052] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0053] Figure 1This is a schematic diagram of a direct communication system according to an exemplary embodiment.

[0054] Figure 2 This is a flowchart illustrating a direct communication method according to an exemplary embodiment.

[0055] Figure 3 This is a flowchart illustrating a direct communication method according to an exemplary embodiment.

[0056] Figure 4 This is a flowchart illustrating a direct communication method according to an exemplary embodiment.

[0057] Figure 5 This is a flowchart illustrating a direct communication method according to an exemplary embodiment.

[0058] Figure 6 This is a flowchart illustrating a direct communication method according to an exemplary embodiment.

[0059] Figure 7 This is a flowchart illustrating a direct communication method according to an exemplary embodiment.

[0060] Figure 8 This is a flowchart illustrating a direct communication method according to an exemplary embodiment.

[0061] Figure 9 This is a flowchart illustrating a direct communication method according to an exemplary embodiment.

[0062] Figure 10 This is a flowchart illustrating a direct communication method according to an exemplary embodiment.

[0063] Figure 11 This is a block diagram of a direct communication device according to an exemplary embodiment.

[0064] Figure 12 This is a block diagram illustrating an apparatus for direct communication according to an exemplary embodiment. Detailed Implementation

[0065] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0066] The direct communication method provided in this disclosure can be applied to... Figure 1 The direct-connect communication system shown. (See attached image) Figure 1 As shown, in a scenario where direct communication occurs between directly connected communication devices, the network device configures various transmission parameters for data transmission for directly connected communication device 1. Directly connected communication device 1 acts as the data sender, and directly connected communication device 2 acts as the data receiver; the two communicate directly. The link between the network device and the directly connected communication device is an uplink / downlink, while the link between directly connected communication devices is a sidelink.

[0067] In this disclosure, the communication scenario of direct communication between directly connected communication devices can also be a device-to-device (D2D) communication scenario. The directly connected communication devices performing direct communication in the embodiments of this disclosure can include various handheld devices, vehicle-mounted devices, wearable devices, computing devices, or other processing devices connected to a wireless modem, as well as various forms of user equipment (UE), mobile station (MS), terminal, terminal equipment, etc. For ease of description, the embodiments of this disclosure will use user equipment as an example for explanation.

[0068] Currently, the physical layer channels in NR direct-link communication systems include the Physical Sidelink Broadcast Channel (PSBCH), Physical Sidelink Share Channel (PSSCH), Physical Sidelink Control Channel (PSCCH), and Physical Sidelink Feedback Channel (PSFCH). Physical layer reference signals include the Primary Sidelink Synchronization Signal (PSSS), Secondary Sidelink Synchronization Signal (SSSS), Demodulation Reference Signal (DMRS), Channel-state information Reference Signal (CSI-RS), and Phase Tracking Reference Signal (PT-RS). Since existing NR direct-link communication systems do not consider the need for ranging via direct-link signals, the existing channels and reference signals in NR direct-link communication systems are not suitable for ranging due to their different design purposes. For distance measurement via direct signal, a dedicated direct distance measurement signal and direct distance measurement resources need to be designed.

[0069] For sidelink ranging or positioning, the ranging signal transmitter sends a direct ranging signal, while the ranging signal receiver performs measurements based on the direct ranging signal, determining the distance and / or angle between the transmitter and receiver through methods such as time measurement or angle measurement. Unlike NR ranging, where one end of the positioning reference signal transmission and reception is the base station, in direct link ranging or positioning, both the transmitter and receiver are user equipment.

[0070] For user equipment used in direct ranging, it may be within or outside the coverage area of ​​a base station. Even if it is within the coverage area, it may be in an idle state of Radio Resource Control (RRC). Therefore, it is not possible to rely entirely on base station configuration or indications to determine the direct ranging resources used for direct ranging or positioning.

[0071] This disclosure provides a direct communication method in which a user equipment uses direct ranging resources in a direct ranging resource set to send a direct ranging signal, thereby allocating direct ranging resources and performing direct ranging.

[0072] Figure 2 This is a flowchart illustrating a direct communication method according to an exemplary embodiment, such as... Figure 2 As shown, the direct communication method used in user equipment includes the following steps.

[0073] In step S11, the configuration parameters of the direct-connection ranging resource set are determined.

[0074] In this embodiment of the disclosure, the direct ranging resource configuration parameters can be understood as configuration parameters used to determine the direct ranging resource set (also known as the direct ranging resource collection).

[0075] In step S12, the direct ranging resources are determined based on the configuration parameters of the direct ranging resource set.

[0076] In this disclosure, the direct ranging resource may sometimes be referred to as the direct ranging resource. In this disclosure, the two terms are sometimes used interchangeably, and those skilled in the art should understand the consistency of their meanings.

[0077] Among them, direct ranging resources can be frequency resources, time resources, or both time and frequency resources.

[0078] In step S13, the direct ranging signal is transmitted through the direct ranging resource.

[0079] In this embodiment of the disclosure, the direct ranging signal can be understood as a signal used for direct ranging or positioning between user equipments communicating based on a sidelink. The user equipments can measure this direct ranging signal and determine the distance and / or angle between them through methods such as time measurement or angle measurement.

[0080] In the direct communication method provided in this embodiment, the user equipment determines the direct ranging resources based on the configuration parameters of the direct ranging resource set, and transmits the direct ranging signal through the direct ranging resources. This enables the user equipment to send the direct ranging signal using the direct ranging resources in the direct ranging resource set, thus enabling the determination of the direct ranging resources and the effective performance of direct ranging.

[0081] In the direct communication method provided in this embodiment, the direct ranging resource set used by the user equipment for direct ranging can be a periodic direct ranging resource set. That is, the direct ranging resource set configured by the direct ranging resource set configuration parameters is a periodic direct ranging resource set.

[0082] In one embodiment, the periodic direct ranging resource set includes one or more sets of direct ranging resources within each resource period, and each set of direct ranging resources includes one or more direct ranging resources, with each direct ranging resource being a resource within the same time unit. The time unit can be a time slot, subframe, or symbol, etc.

[0083] In the direct communication method provided in this embodiment, each direct ranging resource in the same group of the periodic direct ranging resource set has the same position and size within a time unit.

[0084] In the direct communication method provided in this disclosure, the periodic direct ranging resource set includes multiple sets of direct ranging resources within the same resource period. These multiple sets of direct ranging resources reuse time-domain resources using a time-division multiplexing method, and / or reuse frequency-domain resources using a frequency-division multiplexing method.

[0085] In one example, the direct ranging resource set is a periodic set of direct ranging resources; within each period, there are one or more sets of direct ranging resources; each set of direct ranging resources includes one or more direct ranging resources; each direct ranging resource exists within one time unit; each direct ranging time-frequency resource within the same set has the same position and size within the time unit. Direct ranging resources from different sets can be multiplexed using time-division or frequency-division methods.

[0086] In the direct communication method provided in this disclosure, when direct-connection routing resources of different groups are multiplexed using frequency division multiplexing (FDM), a comb FDM can be used to multiplex frequency domain resources. Specifically, when using comb FDM to multiplex frequency domain resources, the frequency domain resources are multiplexed based on a comb FDM factor. The comb FDM factor indicates the configuration information of the resource elements (REs) occupied when multiplexing frequency domain resources using comb FDM. For example, the configuration information may include the number of REs and / or the interval between two adjacent REs.

[0087] In this embodiment of the disclosure, a user equipment can be configured with multiple direct ranging resource sets, and the configuration parameters of each direct ranging resource set can be different. For example, the comb frequency division multiplexing factor corresponding to each direct ranging resource set can be different.

[0088] In one implementation, the direct-connect ranging resource set configuration parameters are used to configure multiple different direct-connect ranging resource sets.

[0089] In one embodiment, the configuration parameters of the direct ranging resource set include a comb frequency division multiplexing factor, and the comb frequency division multiplexing factor is different for different direct ranging resource sets.

[0090] In the direct communication method provided in this disclosure, in response to a user equipment being configured with multiple direct ranging resource sets, the user equipment can receive downlink signaling instructions from the network device, or select a suitable direct ranging resource set according to instructions from higher layers of the user equipment or the characteristics of the ranging service (such as distance, accuracy, latency requirements, etc.).

[0091] In one embodiment of this disclosure, the configuration parameters of the direct ranging resource set determined by the user equipment may include at least one of the following:

[0092] Period length;

[0093] The number of directly connected ranging resources and the time interval for each group within the period;

[0094] The starting position and duration of each group of direct-connected ranging resources in the time domain within the time unit during the period;

[0095] The frequency domain starting position and frequency domain length of each group of direct-connected ranging resources within the time unit during the period.

[0096] In the direct communication method provided in this disclosure, the user equipment can obtain the direct ranging resource set configuration parameters by receiving downlink signals sent by the network device, or by pre-configuration or pre-defined methods. That is, the user equipment can determine the direct ranging resource set configuration parameters in one of the following ways:

[0097] Method 1: Receive downlink signals sent by network devices and determine the configuration parameters of the direct ranging resource set based on the downlink signals.

[0098] In this embodiment of the present disclosure, the downlink signal sent by the network device may be downlink control information (DCI). For ease of description, the DCI used to determine the configuration parameters of the direct ranging resource set will be referred to as the first DCI.

[0099] Figure 3 This is a flowchart illustrating a direct communication method according to an exemplary embodiment, such as... Figure 3 As shown, the direct communication method used in user equipment includes the following steps.

[0100] In step S21, the first DCI sent by the network device is received.

[0101] In step S22, the configuration parameters of the direct ranging resource set are determined based on the first DCI.

[0102] Method 2: Determine the configuration parameters of the direct ranging resource set based on pre-configured information (pre-configured or pre-defined).

[0103] For ease of description, the pre-configuration information used to determine the configuration parameters of the direct-connection ranging resource set will be referred to as the first pre-configuration information.

[0104] Figure 4 This is a flowchart illustrating a direct communication method according to an exemplary embodiment, such as... Figure 4 As shown, the direct communication method used in user equipment includes the following steps.

[0105] In step S31, configuration parameters for the direct-connection ranging resource set are determined based on the first pre-configuration information.

[0106] In the direct communication method provided in this disclosure, the configuration parameters of the direct ranging resource set, determined based on the first DCI or the first pre-configuration information, are used to indicate the direct ranging resource set. For example, the configuration parameters indicate the period length of each ranging resource set in the periodic direct ranging resource set; the number and time-domain interval of each group of direct ranging resources within the period; the time-domain start position and time-domain length of each group of direct ranging resources within the period; and the frequency-domain start position and frequency-domain length of each group of direct ranging resources within the period. This allows the user equipment to determine the direct ranging resource set based on the configuration parameters.

[0107] In the direct communication method provided in this embodiment, the user equipment can send a direct ranging signal based on the downlink control signal sent by the network device, or by autonomously selecting to use a specific direct ranging resource in the direct ranging resource set.

[0108] For ease of description in this embodiment, the downlink control signal used by the user equipment to determine the direct ranging resources in the direct ranging resource set is referred to as the second DCI. This DCI can be semi-static RRC signaling or dynamic DCI signaling.

[0109] Figure 5 This is a flowchart illustrating a direct communication method according to an exemplary embodiment, such as... Figure 5 As shown, the direct communication method used in user equipment includes the following steps.

[0110] In step S41, the second DCI sent by the network device is received.

[0111] In step S42, the direct ranging resources are determined according to the direct ranging resource set configured by the second DCI in the direct ranging resource configuration parameters.

[0112] Figure 6 This is a flowchart illustrating a direct communication method according to an exemplary embodiment, such as... Figure 6 As shown, the direct communication method used in user equipment includes the following steps.

[0113] In step S51, based on predefined rules, direct ranging resources are determined from the set of direct ranging resources configured by the direct ranging resource configuration parameters.

[0114] In the direct communication method provided in this embodiment, the direct ranging resource set can be one or more. When there are multiple direct ranging resource sets, these multiple direct ranging resource sets can be different direct ranging resource sets.

[0115] The direct ranging resource configuration parameter used to determine multiple different direct ranging resource sets can be one or more. That is, on the one hand, multiple different direct ranging resource sets can be configured through a single direct ranging resource configuration parameter; in other words, the direct ranging resource set configuration parameter can have a one-to-many relationship. On the other hand, multiple different direct ranging resource sets can also be configured through multiple different direct ranging resource set configuration parameters. The direct ranging resource set configuration parameter and the direct ranging resource set can have a one-to-one correspondence (one direct ranging resource set configuration parameter configures one direct ranging resource set) or a one-to-many correspondence (one direct ranging resource set configuration parameter configures multiple direct ranging resource sets).

[0116] In the direct communication method provided in this disclosure, the user equipment (UE) can set different direct ranging resource set configuration parameters according to different resource selection methods, such as base station allocation or UE self-selection, to determine the direct ranging resources for transmitting direct ranging signals. In one example, the UE is configured with two direct ranging resource set configuration parameters, namely direct ranging resource set configuration parameter 1 and direct ranging resource set configuration parameter 2. When determining direct ranging resources, on the one hand, if allocated by the base station, resource set configuration parameter 1 can be used to determine the direct ranging resources. On the other hand, if the UE self-selects, resource set configuration parameter 2 can be used to determine the direct ranging resources.

[0117] In the direct communication method provided in this embodiment, after the user equipment determines the direct ranging resource, it can transmit the direct ranging signal through the direct ranging resource and perform direct ranging.

[0118] Figure 7 This is a flowchart illustrating a direct communication method according to an exemplary embodiment, such as... Figure 7 As shown, the direct communication method used in user equipment includes the following steps.

[0119] In step S61, different direct ranging signals are transmitted based on the same direct ranging resource.

[0120] In one implementation, the user equipment can transmit different direct ranging signals based on the same direct ranging resource, that is, the direct ranging resource can be reused for different direct ranging signals.

[0121] Among them, reusing direct-connection ranging resources can be achieved by using time-division multiplexing to reuse time-domain resources or by using frequency-division multiplexing to reuse frequency-domain resources.

[0122] In a direct communication method provided in this embodiment, the user equipment can reuse frequency domain resources in the same direct ranging resource aggregation using a comb-shaped frequency division multiplexing method.

[0123] Figure 8 This is a flowchart illustrating a direct communication method according to an exemplary embodiment, such as... Figure 8 As shown, the direct communication method used in user equipment includes the following steps.

[0124] In step S71, frequency domain resources are reused using a comb-shaped frequency division multiplexing method in the same direct-connection ranging resource.

[0125] When using comb-based frequency division multiplexing (FDM) to reuse frequency domain resources, the resources can be reused based on a comb-based FDM factor. The comb-based FDM factor indicates the configuration information of the REs (Resources Used) when reusing frequency domain resources using this method. For example, the configuration information may include the number of REs and / or the interval between two adjacent REs.

[0126] In other words, in the direct communication method provided in this disclosure, different direct communication signals transmitted within each direct communication range can be multiplexed and transmitted using frequency domain comb.

[0127] In the direct communication method provided in this disclosure, when the user equipment performs multiplexing transmission through frequency domain comb, it is necessary to determine the comb frequency division multiplexing factor.

[0128] In the direct communication method provided in this disclosure, the user equipment can determine the comb frequency division multiplexing factor based on downlink signals sent by the network device, pre-configuration, or a pre-defined method. The comb frequency division multiplexing factor is used to indicate the configuration information of the resource elements occupied when multiplexing frequency domain resources using the comb frequency division multiplexing method.

[0129] In one aspect of this disclosure, the downlink control signal used to determine the comb frequency division multiplexing factor is referred to as the third DCI, that is, the user equipment can determine the comb frequency division multiplexing factor according to the third DCI.

[0130] Figure 9 This is a flowchart illustrating a direct communication method according to an exemplary embodiment, such as... Figure 9As shown, the direct communication method used in user equipment includes the following steps.

[0131] In step S81, the third DCI sent by the network device is received, and the comb frequency division multiplexing factor is determined based on the third DCI.

[0132] On the other hand, the pre-configuration information used to determine the comb frequency division multiplexing factor is called the second pre-configuration information. That is, the user equipment can determine the comb frequency division multiplexing factor based on the second pre-configuration information.

[0133] Figure 10 This is a flowchart illustrating a direct communication method according to an exemplary embodiment, such as... Figure 10 As shown, the direct communication method used in user equipment includes the following steps.

[0134] In step S91, the comb frequency division multiplexing factor is determined based on the second pre-configuration information.

[0135] In the direct communication method provided in this embodiment, the third DCI and / or the second pre-configuration information can be used to configure the comb frequency division multiplexing factor for each direct ranging resource, or to configure the comb frequency division multiplexing factor for the set of direct ranging resources.

[0136] In one example, the comb frequency division multiplexing factor can be determined as follows:

[0137] Method 1: Obtain the comb multiplexing factor by receiving downlink signals from network devices and through pre-configuration or pre-defined methods.

[0138] Method 2: By receiving downlink signals from network devices and through pre-configuration or pre-definition methods, a set of comb multiplexing factors is obtained, and the user equipment at the direct-connected ringing signal transmitter selects which comb value to use.

[0139] In the direct communication method provided in this disclosure, different direct-connection signals transmitted within each direct-connection routing resource can be multiplexed and transmitted using frequency domain comb. The configuration of the comb multiplexing factor can be based on each set of direct-connection routing resources, or it may be based on the set of direct-connection resources to which the direct-connection routing resource set belongs (such as a direct-connection resource pool or a direct-connection bandwidth part (BWP)).

[0140] In the direct communication method provided in this disclosure, when transmitting a direct ranging signal within each direct ranging resource, in order to enable the direct ranging signal to occupy more bandwidth resources, at least one of the following methods can be used for direct ranging signal transmission:

[0141] Method 1: Transmit the direct ranging signal using direct ranging resources with the same frequency domain bandwidth as the direct ranging resource set. That is, when the user equipment transmits a direct ranging signal from a direct ranging resource in a specific direct ranging resource set, the frequency domain bandwidth of the transmitted direct ranging signal is the same as the frequency domain bandwidth of the direct ranging resource.

[0142] Method 2: Use direct ranging resources with the same time domain length as the direct ranging signal to transmit the direct ranging signal. That is, the time domain length of the ranging signal is the same as the time domain length of the resource.

[0143] In one embodiment of this disclosure, considering the time-domain symbols used for automatic gain control (AGC) adjustment and / or protection intervals, more direct ranging resources can be occupied as much as possible after removing the time-domain symbols used for AGC adjustment and / or protection intervals from the direct ranging resources.

[0144] Method 3: Transmit the direct ranging signal using a period that is an integer multiple of the resource set period. That is, the transmission period of the ranging signal is equal to or an integer multiple of the resource set period.

[0145] Method 4: Within the same period, the direct ranging signal is repeatedly transmitted within a group of direct ranging resources, and the number of times the direct ranging signal is repeatedly transmitted is less than or equal to the number of direct ranging resources in the corresponding group. That is, the ranging signal can be repeatedly transmitted within a group of ranging resources in each period; the number of times it is repeatedly transmitted does not exceed the number of ranging resources in that group.

[0146] In the direct link communication method provided in this disclosure, by configuring the above method to transmit the direct ranging signal in each direct ranging resource, it can be understood as providing a new format for the direct ranging signal, which allows the direct ranging signal to occupy more bandwidth resources.

[0147] The direct link communication method provided in this disclosure, by configuring a direct ranging resource set and using the direct ranging resources in the direct ranging resource set for direct ranging signal transmission, can perform direct ranging using the time and frequency resources and direct ranging signal format used for ranging between user equipment for direct link communication without relying on network device configuration or indication to determine the time and frequency resources and the direct ranging signal transmission format.

[0148] It should be noted that those skilled in the art will understand that the various implementation methods / embodiments described above in this disclosure can be used in conjunction with the foregoing embodiments, or they can be used independently. Whether used alone or in conjunction with the foregoing embodiments, the implementation principle is similar. In this disclosure, some embodiments are described as implementations used together; of course, those skilled in the art will understand that such illustrative examples are not intended to limit the embodiments of this disclosure.

[0149] Based on the same concept, embodiments of this disclosure also provide a direct communication device.

[0150] It is understood that the direct communication device provided in this disclosure includes hardware structures and / or software modules corresponding to each function in order to achieve the above-mentioned functions. In conjunction with the units and algorithm steps of the various examples disclosed in this disclosure, this disclosure can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed by hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the technical solutions of this disclosure.

[0151] Figure 11 This is a block diagram illustrating a direct communication device according to an exemplary embodiment. (Refer to...) Figure 11 The direct communication device 100 includes a processing unit 101 and a communication unit 102.

[0152] Processing unit 101 is configured to determine the configuration parameters of the direct ranging resource set and, based on the configuration parameters, determine the direct ranging resources. Communication unit 102 is configured to transmit direct ranging signals through the direct ranging resources.

[0153] In one embodiment, the communication unit 102 receives first downlink control information sent by the network device, and the processing unit 101 determines the direct ranging resource set configuration parameters based on the first downlink control information. Alternatively, the processing unit 101 determines the direct ranging resource set configuration parameters based on first pre-configuration information.

[0154] In one implementation, the direct ranging resource set configured by the direct ranging resource set configuration parameters is a periodic direct ranging resource set.

[0155] In one implementation, the configuration parameters for the direct-connect ranging resource set include at least one of the following:

[0156] Period length.

[0157] The number of directly connected ranging resources and the time interval for each group within the period.

[0158] The starting position and duration of each group of direct-connection ranging resources in the time domain within the period.

[0159] The frequency domain starting position and frequency domain length of each group of direct-connected ranging resources within the time unit during the period.

[0160] In one embodiment, the periodic direct ranging resource set includes one or more sets of direct ranging resources in each resource period, and each set of direct ranging resources includes one or more direct ranging resources, with each direct ranging resource being a resource within the same time unit.

[0161] In one implementation, each direct-connect ranging resource within the same group has the same position and size within a time unit.

[0162] In one embodiment, the same resource period includes multiple sets of directly connected ranging resources, and the multiple sets of directly connected ranging resources reuse time-domain resources in a time-division manner and / or reuse frequency-domain resources in a frequency-division manner.

[0163] In one embodiment, the communication unit 102 receives second downlink control information sent by the network device, and the processing unit 101 determines the direct ranging resource in the direct ranging resource set configured by the direct ranging resource configuration parameters based on the second downlink control information. Alternatively, the processing unit 101 determines the direct ranging resource in the direct ranging resource set configured by the direct ranging resource configuration parameters based on predefined rules.

[0164] In one embodiment, the communication unit 102 transmits different direct ranging signals based on the same direct ranging resource.

[0165] In one embodiment, the communication unit 102 reuses frequency domain resources in the same direct ranging resource using a comb-shaped frequency division multiplexing method.

[0166] In one embodiment, the communication unit 102 is further configured to receive third downlink control information sent by the network device and determine a comb frequency division multiplexing factor based on the third downlink control information. Alternatively, the comb frequency division multiplexing factor can be determined based on second pre-configuration information. The comb frequency division multiplexing factor is used to indicate the configuration information of resource elements occupied when multiplexing frequency domain resources using a comb frequency division multiplexing method.

[0167] In one embodiment, the third downlink control information and / or the second pre-configuration information are used to configure the comb frequency division multiplexing factor for each directly connected ranging resource, or to configure the comb frequency division multiplexing factor for the set of directly connected ranging resources.

[0168] In one implementation, the direct-connect ranging resource set configuration parameters are used to configure multiple different direct-connect ranging resource sets.

[0169] In one embodiment, the configuration parameters of the direct ranging resource set include a comb frequency division multiplexing factor, and the comb frequency division multiplexing factor is different for different direct ranging resource sets.

[0170] In one embodiment, the communication unit 102 transmits the direct ranging signal through the direct ranging resource using at least one of the following methods:

[0171] Direct ranging signals are transmitted using direct ranging resources with the same frequency bandwidth as the direct ranging resource set. Direct ranging signals are also transmitted using direct ranging resources with the same time domain length as the direct ranging signal. The transmission period corresponds to an integer multiple of the period of the direct ranging resource set. Direct ranging signals are repeatedly transmitted within a group of direct ranging resources in the same period, and the number of repeated transmissions is less than or equal to the number of direct ranging resources in the corresponding group.

[0172] Regarding the apparatus in the above embodiments, the specific manner in which each module performs its operation has been described in detail in the embodiments related to the method, and will not be elaborated upon here.

[0173] Figure 12 This is a block diagram illustrating a device 200 for direct communication according to an exemplary embodiment. The direct communication device 200 can be provided as the user equipment described in the above embodiments. For example, the device 200 can be a mobile phone, computer, digital broadcasting terminal, messaging device, game console, tablet device, medical device, fitness equipment, personal digital assistant, etc.

[0174] Reference Figure 12 The device 200 may include one or more of the following components: a processing component 202, a memory 204, a power component 206, a multimedia component 208, an audio component 210, an input / output (I / O) interface 212, a sensor component 214, and a communication component 216.

[0175] Processing component 202 typically controls the overall operation of device 200, such as operations associated with display, telephone calls, data communication, camera operation, and recording. Processing component 202 may include one or more processors 220 to execute instructions to perform all or part of the steps of the methods described above. Furthermore, processing component 202 may include one or more modules to facilitate interaction between processing component 202 and other components. For example, processing component 202 may include a multimedia module to facilitate interaction between multimedia component 208 and processing component 202.

[0176] Memory 204 is configured to store various types of data to support the operation of device 200. Examples of such data include instructions for any application or method operating on device 200, contact data, phonebook data, messages, pictures, videos, etc. Memory 204 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0177] The power supply component 206 provides power to the various components of the device 200. The power supply component 206 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power to the device 200.

[0178] Multimedia component 208 includes a screen that provides an output interface between the device 200 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touchscreen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors may sense not only the boundaries of the touch or swipe action but also the duration and pressure associated with the touch or swipe operation. In some embodiments, multimedia component 208 includes a front-facing camera and / or a rear-facing camera. When the device 200 is in an operating mode, such as a shooting mode or a video mode, the front-facing camera and / or the rear-facing camera may receive external multimedia data. Each front-facing camera and rear-facing camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0179] Audio component 210 is configured to output and / or input audio signals. For example, audio component 210 includes a microphone (MIC) configured to receive external audio signals when device 200 is in an operating mode, such as call mode, recording mode, and voice recognition mode. The received audio signals may be further stored in memory 204 or transmitted via communication component 216. In some embodiments, audio component 210 also includes a speaker for outputting audio signals.

[0180] I / O interface 212 provides an interface between processing component 202 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to, home buttons, volume buttons, power buttons, and lock buttons.

[0181] Sensor assembly 214 includes one or more sensors for providing status assessments of various aspects of device 200. For example, sensor assembly 214 may detect the on / off state of device 200, the relative positioning of components such as the display and keypad of device 200, changes in the position of device 200 or a component of device 200, the presence or absence of user contact with device 200, the orientation or acceleration / deceleration of device 200, and temperature changes of device 200. Sensor assembly 214 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 214 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, sensor assembly 214 may also include an accelerometer, a gyroscope, a magnetometer, a pressure sensor, or a temperature sensor.

[0182] Communication component 216 is configured to facilitate wired or wireless communication between device 200 and other devices. Device 200 can access wireless networks based on communication standards, such as WiFi, 2G, or 3G, or combinations thereof. In one exemplary embodiment, communication component 216 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, communication component 216 also includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0183] In an exemplary embodiment, the apparatus 200 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the methods described above.

[0184] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 204 including instructions, which can be executed by a processor 220 of the device 200 to perform the above-described method. For example, the non-transitory computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device, etc.

[0185] It can be further understood that in this disclosure, "multiple" refers to two or more, and other quantifiers are similar. "And / or" describes the relationship between related objects, indicating that three relationships can exist; for example, A and / or B can represent: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. The singular forms "a," "the," and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0186] It is further understood that the terms "first," "second," etc., are used to describe various types of information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another, and do not indicate a specific order or degree of importance. In fact, the expressions "first," "second," etc., are completely interchangeable. For example, without departing from the scope of this disclosure, first information can also be referred to as second information, and similarly, second information can also be referred to as first information.

[0187] It is further understood that although operations are described in a specific order in the accompanying drawings in the embodiments of this disclosure, this should not be construed as requiring these operations to be performed in the specific order or serial order shown, or requiring all of the shown operations to be performed to obtain the desired result. In certain environments, multitasking and parallel processing may be advantageous.

[0188] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0189] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A direct communication method, characterized in that, Performed by the user equipment, the direct communication method includes: Determine the configuration parameters of the direct ranging resource set, wherein the configuration parameters of the direct ranging resource set include the comb frequency division multiplexing factor; The configuration parameters of the direct ranging resource set are used to configure the direct ranging resource set. Different direct ranging resource sets correspond to different comb frequency division multiplexing factors. The direct ranging resource set is determined based on the configuration parameters of the direct ranging resource set, and direct ranging resources are determined in the direct ranging resource set. Determining direct ranging resources in the set of direct ranging resources includes: When the network device allocates resources, the system receives the second downlink control information sent by the network device and determines the direct ranging resource in the direct ranging resource set configured by the direct ranging resource set configuration parameters according to the second downlink control information; when the user equipment selects the resource itself, the system determines the direct ranging resource in the direct ranging resource set configured by the direct ranging resource set configuration parameters according to the higher layer instructions and predefined rules. In the direct ranging resources, frequency domain resources are multiplexed using a comb frequency division multiplexing method based on the comb frequency division multiplexing factor to transmit the direct ranging signal; The transmission of the direct ranging signal also satisfies at least one of the following: the direct ranging signal is transmitted using direct ranging resources with the same frequency domain width as the direct ranging resource set; the direct ranging signal is transmitted using direct ranging resources with the same time domain length as the direct ranging signal; or, the direct ranging signal is repeatedly transmitted within a group of direct ranging resources in the same period, and the number of times the direct ranging signal is repeatedly transmitted is less than or equal to the number of direct ranging resources in the corresponding group.

2. The direct communication method according to claim 1, characterized in that, The parameters for determining the configuration of the direct-connection ranging resource set include: Receive first downlink control information sent by the network device, and determine the configuration parameters of the direct ranging resource set based on the first downlink control information; or... Based on the first pre-configuration information, the configuration parameters of the direct-connection ranging resource set are determined.

3. The direct communication method according to claim 1, characterized in that, The direct ranging resource set configured by the direct ranging resource set configuration parameters is a periodic direct ranging resource set.

4. The direct communication method according to claim 3, characterized in that, The configuration parameters for the direct-connect ranging resource set include at least one of the following: Period length; The number of directly connected ranging resources and the time interval for each group within the period; The starting position and duration of each group of direct-connected ranging resources in the time domain within the time unit during the period; The frequency domain starting position and frequency domain length of each group of direct-connected ranging resources within the time unit during the period.

5. The direct communication method according to claim 4, characterized in that, The periodic direct ranging resource set includes one or more sets of direct ranging resources in each resource period, and each set of direct ranging resources includes one or more direct ranging resources, with each direct ranging resource being a resource within the same time unit.

6. The direct communication method according to claim 5, characterized in that, Each direct-connect ranging resource within the same group has the same location and size within the time unit.

7. The direct communication method according to claim 6, characterized in that, Within the same resource period, there are multiple sets of directly connected ranging resources. These multiple sets of directly connected ranging resources reuse time-domain resources in a time-division manner and / or reuse frequency-domain resources in a frequency-division manner.

8. The direct communication method according to any one of claims 1 to 7, characterized in that, The transmission of the direct-connect ranging signal includes: Different direct ranging signals are transmitted based on the same direct ranging resource.

9. The direct communication method according to claim 8, characterized in that, The transmission of different direct ranging signals based on the same direct ranging resource includes: Frequency domain resources are reused using a comb-shaped frequency division multiplexing method within the same direct-connection ranging resource.

10. The direct communication method according to claim 9, characterized in that, The direct communication method further includes: Receive third downlink control information sent by the network device, and determine the comb frequency division multiplexing factor based on the third downlink control information; or, Based on the second pre-configuration information, the comb frequency division multiplexing factor is determined; The comb-shaped frequency division multiplexing factor is used to indicate the configuration information of the resource elements occupied when using comb-shaped frequency division multiplexing to reuse frequency domain resources.

11. The direct communication method according to claim 10, characterized in that, The third downlink control information and / or the second pre-configuration information are used to configure the comb frequency division multiplexing factor for each directly connected ranging resource, or to configure the comb frequency division multiplexing factor for the set of directly connected ranging resources.

12. A direct-connect communication device, characterized in that, Performed by the user equipment, the direct communication device includes: The processing unit is configured to determine the configuration parameters of the direct ranging resource set, wherein the configuration parameters of the direct ranging resource set include a comb frequency division multiplexing factor; The configuration parameters of the direct ranging resource set are used to configure the direct ranging resource set. Different direct ranging resource sets correspond to different comb frequency division multiplexing factors. Based on the configuration parameters of the direct ranging resource set, a direct ranging resource set is determined, and direct ranging resources are determined in the direct ranging resource set. The processing unit is further configured to, when the network device allocates resources, receive second downlink control information sent by the network device, and determine direct ranging resources in the direct ranging resource set configured by the direct ranging resource set configuration parameters according to the second downlink control information; and, when the user equipment selects the resources, determine direct ranging resources in the direct ranging resource set configured by the direct ranging resource set configuration parameters according to higher layer instructions and predefined rules. The communication unit is configured to reuse frequency domain resources in the direct ranging resources using a comb frequency division multiplexing method based on the comb frequency division multiplexing factor, and transmit the direct ranging signal. The communication unit is further configured to transmit the direct ranging signal under at least one of the following conditions: using direct ranging resources with the same frequency domain width as the direct ranging resource set to transmit the direct ranging signal; using direct ranging resources with the same time domain length as the direct ranging signal to transmit the direct ranging signal; or, repeatedly transmitting the direct ranging signal within a group of direct ranging resources in the same period, wherein the number of times the direct ranging signal is repeatedly transmitted is less than or equal to the number of direct ranging resources in the corresponding group.

13. A direct-connect communication device, characterized in that, include: processor; Memory used to store processor-executable instructions; The processor is configured to execute the direct communication method according to any one of claims 1 to 11.

14. A storage medium, characterized in that, The storage medium stores instructions that, when executed by the processor of the user equipment, enable the user equipment to perform the direct communication method according to any one of claims 1 to 11.

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