CN113271670B

CN113271670B - Configuration method of direct link resources, terminal and base station

Info

Publication number: CN113271670B
Application number: CN202010093955.1A
Authority: CN
Inventors: 张轶; 徐晓东; 夏亮; 吴丹; 张静文
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2020-02-14
Filing date: 2020-02-14
Publication date: 2023-04-07
Anticipated expiration: 2040-02-14
Also published as: CN113271670A

Abstract

The embodiment of the invention provides a configuration method of direct link resources, a terminal and a base station. The embodiment of the invention configures the SL available resources at two symbol levels by each BWP or configures the SL available resources at the symbol level by each resource pool, thereby reducing or avoiding fragmentation of uplink resources, leading the network to have the flexibility of scheduling different service packet sizes and improving the network performance.

Description

Configuration method of direct link resources, terminal and base station

Technical Field

The invention relates to the technical field of mobile communication, in particular to a configuration method of direct link resources, a terminal and a base station.

Background

In a New air interface (NR, new Radio) V2X system, a direct link (SL, sidelink) carrier (carrier) is (pre) configured, and supports two designs of a shared licensed carrier (shared with Uu port resources) and a dedicated NR SL carrier (dedicated NR Sidelink carrier). NR supports configuration of a bandwidth part (BWP) for transmission and reception in a carrier, and a plurality of resource pools can be configured within a BWP. The configuration of BWP and resource pools is described below in conjunction with fig. 1.

BWP configuration: NR supports configuring one SL start symbol (startSLsymbles) and SL symbol length (lengthSLsymbles) per BWP (per-BWP), wherein startSLsymbles indicate the start symbol (optionally 0,1,2,3,4,5,6, 7) of a sidelink available symbol in a slot (slot) without SL-SSB, and the lengthSLsymbles indicate the number of symbols (optionally 7,8,9,10,11,12,13, 14) of a sidelink available symbol in a slot without SL-SSB.

Resource pool configuration: the SL resource pool is configured on the SL BWP, the time domain indicates the granularity to be at a time slot level, and the NR supports each resource pool (per resource pool) to configure resource pool time domain information (timeresource pool) and a resource pool period (periodResourcePool), wherein the timeresource pool indicates which slots can be used for sidelink transmission in a period periodResourcePool (bitmap) form or other forms, and the periodResourcePool is a repetition period of the timeResourcePool.

That is, BWP configures available resources at symbol (symbol) level, and a resource pool (resource pool) configures available resources at slot (slot) level.

Different from a Long Term Evolution (LTE) system, the Time Division Duplex (TDD) uplink and downlink timeslot matching at a cell level is broadcasted through system messages, and the 5G adopts a more flexible frame structure indication signaling, including semi-static uplink and downlink configurations, such as TDD-UL-DL-ConfigCommon and TDD-UL-DL-configdivided, and dynamic uplink and downlink indications, such as dynamic timeslot Format indication (dynamic SFI, slot Format Indicator).

NR supports semi-static uplink and downlink switching periods P of 0.5ms,0.625ms,1ms,1.25ms,2ms,2.5ms,5ms and 10ms, and each period comprises

A slots of which mu _ref Is the reference subcarrier spacing. In addition, in order to support dynamic uplink and downlink traffic loads, NR can also support a bi-periodic configuration, where the sum of two periods needs to be divided by 20 ms.

Disclosure of Invention

At least one embodiment of the present invention provides a configuration method of direct link resources, a terminal, and a network device, which can reduce or avoid fragmentation of uplink resources, improve network scheduling flexibility, and improve network performance.

According to an aspect of the present invention, at least one embodiment provides a method for configuring direct link resources, which is applied to a terminal, and includes:

acquiring configuration information of a bandwidth part BWP, wherein the configuration information of the BWP comprises first symbol indication information and second symbol indication information;

and determining the SL available symbols in the available time slot according to the first symbol indication information and the second symbol indication information.

According to another aspect of the present invention, at least one embodiment provides a method for configuring direct link resources, which is applied to a base station, and includes:

and sending configuration information of a bandwidth part BWP to a terminal, wherein the configuration information of BWP comprises first symbol indication information and second symbol indication information.

According to another aspect of the present invention, at least one embodiment provides a method for configuring direct link resources, which is applied to a terminal, and includes:

acquiring resource pool configuration information, wherein the resource pool configuration information comprises symbol indication information;

and determining SL available symbols in the SL available time slots indicated by the resource pool configuration information according to the symbol indication information.

and sending resource pool configuration information to a terminal, wherein the resource pool configuration information comprises symbol indication information.

According to another aspect of the present invention, at least one embodiment provides a terminal including:

an obtaining module, configured to obtain configuration information of a bandwidth part BWP, where the configuration information of the BWP includes first symbol indication information and second symbol indication information;

and a determining module, configured to determine, according to the first symbol indication information and the second symbol indication information, an SL available symbol in an available slot.

In accordance with another aspect of the present invention, at least one embodiment provides a terminal comprising a transceiver and a processor, wherein,

the transceiver is configured to acquire configuration information of a bandwidth part BWP, where the configuration information of the BWP includes first symbol indication information and second symbol indication information;

and the processor is used for determining SL available symbols in the available time slot according to the first symbol indication information and the second symbol indication information.

According to another aspect of the present invention, at least one embodiment provides a base station comprising:

a sending module, configured to send configuration information of a bandwidth part BWP to a terminal, where the configuration information of the BWP includes first symbol indication information and second symbol indication information.

In accordance with another aspect of the present invention, at least one embodiment provides a base station comprising a transceiver and a processor, wherein,

the transceiver is configured to transmit configuration information of a bandwidth part BWP to a terminal, where the configuration information of the BWP includes first symbol indication information and second symbol indication information.

an obtaining module, configured to obtain resource pool configuration information, where the resource pool configuration information includes symbol indication information;

and a determining module, configured to determine, according to the symbol indication information, an SL available symbol in the SL available slot indicated by the resource pool configuration information.

the transceiver is configured to obtain resource pool configuration information, where the resource pool configuration information includes symbol indication information;

and the processor is configured to determine, according to the symbol indication information, an SL available symbol in an SL available slot indicated by the resource pool configuration information.

a sending module, configured to send resource pool configuration information to a terminal, where the resource pool configuration information includes symbol indication information.

the transceiver is configured to send resource pool configuration information to a terminal, where the resource pool configuration information includes symbol indication information.

According to another aspect of the present invention, at least one embodiment provides a terminal including: a processor, a memory and a program stored on the memory and executable on the processor, the program, when executed by the processor, implementing the steps of the configuration method of the direct link resource as described above.

According to another aspect of the present invention, at least one embodiment provides a base station comprising: a processor, a memory and a program stored on the memory and executable on the processor, the program, when executed by the processor, implementing the steps of the configuration method of the direct link resource as described above.

According to another aspect of the invention, at least one embodiment provides a computer readable storage medium having a program stored thereon, which when executed by a processor, performs the steps of the method as described above.

Compared with the prior art, the configuration method, the terminal and the base station for the direct link resource provided by the embodiment of the invention configure the SL available resources at two symbol levels through each BWP or configure the SL available resources at a symbol level in each resource pool, so that fragmentation of uplink resources can be reduced or avoided, a network has flexibility in scheduling different service packet sizes, and network performance is improved.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

FIG. 1 is a diagram of an example resource pool and BWP configuration of the prior art;

FIG. 2 is a schematic diagram of an application scenario according to an embodiment of the present invention;

fig. 3 is a flowchart of a method for configuring direct link resources according to an embodiment of the present invention, applied to a terminal side;

fig. 4 is a diagram of an exemplary configuration of SL available resources at two symbol levels per BWP according to an embodiment of the present invention;

fig. 5 is a flowchart of a method for configuring direct link resources according to an embodiment of the present invention, applied to a network side;

fig. 6 is a schematic structural diagram of a terminal according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a terminal according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a network device according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a network device according to an embodiment of the present invention;

fig. 10 is another flowchart of a method for configuring direct link resources according to an embodiment of the present invention, which is applied to a terminal side;

fig. 11 is another flowchart of a configuration method of direct link resources applied to a network side according to an embodiment of the present invention;

fig. 12 is a schematic structural diagram of a terminal according to an embodiment of the present invention;

fig. 13 is a schematic structural diagram of a terminal according to an embodiment of the present invention;

fig. 14 is a schematic structural diagram of a network device according to an embodiment of the present invention;

fig. 15 is another schematic structural diagram of a network device according to an embodiment of the present invention.

Detailed Description

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances such that the embodiments of the application described herein may be implemented, for example, in sequences other than those illustrated or described herein. 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. In the description and in the claims "and/or" means at least one of the connected objects.

The techniques described herein are not limited to NR systems and Long Time Evolution (LTE)/LTE Evolution (LTE-Advanced) systems, and may also be used for various wireless communication systems, such as Code Division Multiple Access (CDMA), time Division Multiple Access (TDMA), frequency Division Multiple Access (FDMA), orthogonal Frequency Division Multiple Access (OFDMA), single carrier Frequency Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" are often used interchangeably. CDMA systems may implement Radio technologies such as CDMA2000, universal Terrestrial Radio Access (UTRA), and so on. UTRA includes Wideband CDMA (WCDMA) and other CDMA variants. TDMA systems may implement radio technologies such as Global System for Mobile communications (GSM). The OFDMA system may implement radio technologies such as Ultra Mobile Broadband (UMB), evolved-UTRA (E-UTRA), IEEE 802.21 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, flash-OFDM, etc. UTRA and E-UTRA are parts of the Universal Mobile Telecommunications System (UMTS). LTE and higher LTE (e.g., LTE-A) are new UMTS releases that use E-UTRA. UTRA, E-UTRA, UMTS, LTE-A, and GSM are described in documents from an organization named "third Generation Partnership project" (3 rd Generation Partnership project,3 GPP). CDMA2000 and UMB are described in documents from an organization named "third generation partnership project 2" (3 GPP 2). The techniques described herein may be used for both the above-mentioned systems and radio technologies, as well as for other systems and radio technologies. However, the following description describes the NR system for purposes of example, and NR terminology is used in much of the description below, although the techniques may also be applied to applications other than NR system applications.

The following description provides examples, and does not limit the scope, applicability, or configuration set forth in the claims. Changes may be made in the function and arrangement of elements discussed without departing from the spirit and scope of the disclosure. Various examples may omit, substitute, or add various procedures or components as appropriate. For example, the described methods may be performed in an order different than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

Referring to fig. 2, fig. 2 is a block diagram of a wireless communication system to which an embodiment of the present invention is applicable. The wireless communication system includes a terminal 11 and a network device 12. The terminal 11 may also be referred to as a User terminal or a User Equipment (UE), where the terminal 11 may be a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer), a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), a Wearable Device (Wearable Device), or a vehicle-mounted Device, and the specific type of the terminal 11 is not limited in the embodiment of the present invention. The network device 12 may be a Base Station and/or a core network element, wherein the Base Station may be a 5G or later-version Base Station (e.g., a gNB, a 5G NR NB, etc.), or a Base Station in other communication systems (e.g., an eNB, a WLAN access point, or other access points, etc.), where the Base Station may be referred to as a node B, an evolved node B, an access point, a Base Transceiver Station (BTS), a radio Base Station, a radio Transceiver, a Basic Service Set (BSS), an Extended Service Set (ESS), a node B, an evolved node B (eNB), a home node B, a home evolved node B, a WLAN access point, a WiFi node, or some other suitable terminology in the field, as long as the same technical effect is achieved, the Base Station is not limited to a specific technical vocabulary, and it should be noted that the Base Station in the NR system is only taken as an example in the embodiment of the present invention, but the specific type of the Base Station is not limited.

The base stations may communicate with the terminals 11 under the control of a base station controller, which may be part of the core network or some of the base stations in various examples. Some base stations may communicate control information or user data with the core network through a backhaul. In some examples, some of these base stations may communicate with each other directly or indirectly over backhaul links, which may be wired or wireless communication links. A wireless communication system may support operation on multiple carriers (waveform signals of different frequencies). A multi-carrier transmitter can transmit modulated signals on the multiple carriers simultaneously. For example, each communication link may be a multi-carrier signal modulated according to various radio technologies. Each modulated signal may be transmitted on a different carrier and may carry control information (e.g., reference signals, control channels, etc.), overhead information, data, and so on.

The base station may communicate wirelessly with the terminals 11 via one or more access point antennas. Each base station may provide communication coverage for a respective coverage area. The coverage area of an access point may be partitioned into sectors that form only a portion of the coverage area. A wireless communication system may include different types of base stations (e.g., macro, micro, or pico base stations). The base stations may also utilize different radio technologies, such as cellular or WLAN radio access technologies. The base stations may be associated with the same or different access networks or operator deployments. The coverage areas of different base stations (including coverage areas of base stations of the same or different types, coverage areas utilizing the same or different radio technologies, or coverage areas belonging to the same or different access networks) may overlap.

The communication links in a wireless communication system may comprise an Uplink for carrying Uplink (UL) transmissions (e.g., from terminal 11 to network device 12) or a Downlink for carrying Downlink (DL) transmissions (e.g., from network device 12 to terminal 11). The UL transmission may also be referred to as reverse link transmission, while the DL transmission may also be referred to as forward link transmission. Downlink transmissions may be made using licensed frequency bands, unlicensed frequency bands, or both. Similarly, uplink transmissions may be made using licensed frequency bands, unlicensed frequency bands, or both.

As described in the background art, NR supports a bi-periodic configuration, where a bi-period generally includes two periods, which may be referred to as a first uplink and downlink transmission period and a second uplink and downlink transmission period, respectively. When NR adopts bi-periodic configuration, if one symbol (symbol) level available resource selection is configured for each BWP (per-BWP), it is difficult to allocate SL available resources according to the uplink resource ratio in each period. Here, allocating the SL available resources according to the uplink resource proportion in each period means that the proportion of the SL available resources in the first uplink and downlink transmission period in the uplink resources in the first uplink and downlink transmission period is the same as the proportion of the SL available resources in the second uplink and downlink transmission period in the uplink resources in the second uplink and downlink transmission period.

Taking subcarrier interval 30kHz, first uplink and downlink transmission period 2.5ms (uplink and downlink timeslot is ddddddu, where D denotes downlink timeslot, U denotes uplink timeslot) + second uplink and downlink transmission period 2.5ms (uplink and downlink timeslot is DDDUU), if SL available resources are to be allocated according to the uplink resource proportion in each period, only identical startSLsymbols and length slsymbols can be allocated on each uplink timeslot (UL slot), for example, each UL slot uses configuration of "startSLsymbols, length slsymbols" = "0,7", so that resource fragmentation will result, uplink scheduling will not have a complete UL slot available, and it is not beneficial to schedule edge user's large packet service. Configuring one symbol level SL available resource per BWP (per-BWP) will limit scheduling flexibility, impacting network performance.

In order to solve at least one of the above problems, embodiments of the present invention provide a method for configuring multiple direct link resources, where each BWP configures SL available resources at two symbol levels, or each resource pool configures SL available resources at a symbol level, so that fragmentation of uplink resources can be reduced or avoided, so that a network has flexibility in scheduling different service packet sizes, and network performance is improved.

Referring to fig. 3, a method for configuring direct link resources according to an embodiment of the present invention, when applied to a terminal side, includes:

step 31, obtaining configuration information of BWP, where the configuration information of BWP includes first symbol indication information and second symbol indication information.

Here, the first symbol indication information and the second symbol indication information are used to indicate a SL first available symbol and a through link SL second available symbol, respectively. In the above manner, the embodiment of the present invention configures SL available resources at two symbol levels for each BWP. In particular, the method comprises the following steps of,

the first symbol indication information may include:

a first SL start symbol for indicating a start symbol of a first SL available symbol within an available slot;

a first SL symbol length to indicate a number of symbols of a first SL available symbol within an available slot.

The second symbol indication information may include:

a second SL start symbol for indicating a start symbol of a second SL available symbol within an available slot;

a second SL symbol length to indicate a number of symbols of a second SL available symbol within the available slot.

In this embodiment of the present invention, the first symbol indication information and the second symbol indication information may be configured in at least two ways:

1) The SL available symbol in the configuration information for BWP indicates: { first SL start symbol, first SL symbol length } and { second SL start symbol, second SL symbol length }.

For example, SL available symbols are indicated as 0,7 and 2, 12, which means that the first SL available symbol indicated by the first symbol indication information is the first 7 symbols from symbol 0 in the available slot, and the second SL available symbol indicated by the second symbol indication information is the first 12 symbols from symbol 2 in the available slot.

2) The SL available symbol in the configuration information of BWP indicates: { first SL start symbol, second SL start symbol } and { first SL symbol length, second SL symbol length }

For example, SL available symbols are indicated as 0,3 and 6, 11, indicating that the first SL available symbol indicated by the first symbol indication information is the first 6 symbols from symbol 0 in the available slot and the second SL available symbol indicated by the second symbol indication information is the first 11 symbols from symbol 3 in the available slot.

It should be noted that, the configuration information of the BWP may include, in addition to the first symbol indication information and the second symbol indication information, information such as configuration of frequency domain resources, which is not specifically limited in this embodiment of the present invention.

And step 32, determining the SL available symbol in the available slot according to the first symbol indication information and the second symbol indication information.

Here, in step 32, the terminal may determine the SL available symbol in the slot without the SL-SSB according to the first symbol indication information and the second symbol indication information. For example, the SL available symbol is determined in the first uplink and downlink transmission period of the bi-cycle according to the first symbol indication information, and the SL available symbol is determined in the second uplink and downlink transmission period of the bi-cycle according to the second symbol indication information.

Still taking the foregoing example for illustration, in the foregoing example where the subcarrier interval is 30kHz, and the first uplink and downlink transmission period is 2.5ms (uplink and downlink timeslots are ddddddddu, where D denotes a downlink timeslot, and U denotes an uplink timeslot) + the second uplink and downlink transmission period is 2.5ms (uplink and downlink timeslots are DDDUU), when the configuration method according to the embodiment of the present invention is adopted, as shown in fig. 4, first and second symbol indication information may be configured, where the first symbol indication information indicates that the first SL available symbol is 7 symbols beginning with symbol 0 in the available timeslot, and the second SL available symbol indicated by the second symbol indication information is 14 symbols beginning with symbol 0 in the available timeslot. Thus, the network side may allocate the SL available resources according to the uplink resource proportion in each period, for example, the first uplink and downlink transmission period includes only one uplink timeslot, and determines, according to the first symbol indication information, that the SL available symbols are 7 symbols starting from symbol 0 in the uplink timeslot; the second uplink and downlink transmission period includes two uplink timeslots, and the SL available symbols are determined to be 14 symbols starting from symbol 0 in one of the uplink timeslots according to the second symbol indication information, that is, the symbols in the uplink timeslots are all SL available symbols, and the other uplink timeslot can be used for other uplink scheduling. In this way, the ratio of the SL available resource in the uplink resource in the first uplink and downlink transmission period is 50%, and the ratio of the SL available resource in the uplink resource in the second uplink and downlink transmission period is also 50%, which are the same, so that the SL available resource is allocated according to the uplink resource ratio in each period.

Through the above steps, the embodiment of the present invention configures two symbol indication information for each BWP, and the two symbol indication information are respectively used for indicating SL available resources at a symbol level, thereby reducing or avoiding fragmentation of uplink resources, enabling a network to have flexibility in scheduling different service packet sizes, and improving network performance.

According to at least one embodiment of the present invention, before step 32, the terminal may further obtain TDD uplink and downlink configuration information and resource pool configuration information.

Wherein the TDD uplink and downlink configuration information includes at least one of the following: a first uplink/downlink transmission period P, a second uplink/downlink transmission period P ₂ 。

The resource pool configuration information includes: the resource management system comprises a resource pool period and resource pool time domain information, wherein the resource pool time domain information is used for indicating a time domain resource (namely a timeresource pool) in the resource pool period, and the resource pool period is used for indicating a repetition period (namely a period resource pool) of the resource pool time domain information.

In this way, in step 32, the terminal may determine an available symbol of the through link in the SL available slot in the first uplink and downlink transmission period according to one of the first symbol indication information and the second symbol indication information, and determine an SL available symbol in the SL available slot in the second uplink and downlink transmission period according to the other of the first symbol indication information and the second symbol indication information. In addition, the terminal may also determine, according to the resource pool configuration information, SL available timeslots in the first uplink and downlink transmission period and the second uplink and downlink transmission period.

According to at least one embodiment of the present invention, the terminal may operate in a licensed carrier (licensed carrier).

According to at least one embodiment of the present invention, the resource pool period P included in the resource pool configuration information _v Is the first uplink and downlink transmission period P and the second uplink and downlink transmission period P ₂ Integer multiples of the sum; or, the resource pool period P contained in the resource pool configuration information _v Can be P + P ₂ Trimming; or, the resource pool period P contained in the resource pool configuration information _v Satisfies mod (P) _v ，(P+P ₂ ) ) =0. For example, when the first uplink and downlink transmission period P in the dual period is 2ms and the second uplink and downlink transmission period P is 0.5ms, the period resource pool configured by NR V2X needs to be P _d Integer multiples of =5 ms. Here, P _d Indicates two weeksPeriod, i.e. P _d ＝P+P ₂ 。

According to at least one embodiment of the present invention, the resource pool period P included in the resource pool configuration information _v May be an integer multiple of the first uplink and downlink transmission period P, or P _v Can be divided by the first uplink and downlink transmission period P, or P _v Satisfies mod (P) _v ，P)＝0。

According to at least one embodiment of the present invention, the resource pool period included in the resource pool configuration information includes a candidate value P satisfying the following condition _v ：

Candidate value P _v Is the first uplink and downlink transmission period P and the second uplink and downlink transmission period P ₂ Integral multiple of the sum, or P _v Can be P + P ₂ Trimming; or, P _v Satisfies mod (P) _v ，(P+P ₂ ))＝0。

The candidate value P _v Is an integral multiple of the first uplink and downlink transmission period P, or P _v Can be divided by the first uplink and downlink transmission period P, or P _v Satisfies mod (P) _v ，P)＝0。

According to at least one embodiment of the present invention, the resource pool period P included in the resource pool configuration information _v May be an integer multiple of 20 ms; or P _v Can be divided by 20 ms; or P _v Satisfies mod (P) _v ，20ms)＝0。

Specifically, when SL available symbols are determined, the terminal may determine the resource pool period P _v Each of (P + P) ₂ ) A through link available symbol in an SL available time slot in a first uplink and downlink transmission period P in the period is a continuous first SL symbol length symbol starting from a first SL starting symbol indicated by first symbol indication information; and, determining a resource pool period P _v Each of (P + P) ₂ ) Second uplink and downlink transmission period P in the period ₂ Through link availability in intra SL available slotsThe symbols are consecutive second SL symbol length symbols starting from a second SL start symbol indicated by the second symbol indication information.

According to at least one embodiment of the present invention, the terminal does not expect that at least one DL or flexible symbol is included in the SL available symbols in the available slot, wherein the SL available symbols are determined according to the first symbol indication information and/or the second symbol indication information. That is, the SL available symbols in the available slot determined by the terminal according to the first symbol indication information and/or the second symbol indication information do not include DL symbols or flexible symbols.

It should be noted that the TDD uplink/downlink configuration information, the BWP configuration information, and the resource pool configuration information may be preconfigured by the terminal (that is, preconfigured in the terminal), or obtained from a higher layer signaling (such as RRC signaling) sent by the network.

The above configuration method is explained below by a specific example, still referring to fig. 4:

the terminal side configures a SL start symbol startSLsymbol to be '0, 0' and a SL symbol number lengSLsymbols to be '7, 14' through pre-configuration or receiving BWP configuration information configured by a network side through high-layer signaling; resource pool configuration information, configuring resource pool period ("period resource pool") P _v =10ms, where P =2.5ms P can be obtained by TDD uplink and downlink configuration ₂ ＝2.5ms。

Then, of the first 5ms and the second 5ms within the resource pool period 10ms, the SL available symbols in the SL available slot included in the first 2.5ms (i.e. the 0 th to 2.5ms and 5 to 7.5ms with the resource pool period start position as the reference position) are 0 to 6 (total 7 symbols); the SL available symbols in the SL available slots included in the first 5ms and the second 5ms within 10ms of the resource pool period, and the last 2.5ms (i.e., the 2.5-5 ms and 7.5-10 ms with the resource pool period start position as the reference position) are 0 to 13 (14 symbols in total).

SL may use slot arbitration to illustrate: through TDD uplink and downlink configuration, the subcarrier interval is 30kHz, the first 2.5ms frame structure is DDDDDDU, and the second 2.5ms frame structure is DDDUU. And obtaining the last time slot of the first 2.5ms as an available SL time slot and the last time slot of the last 2.5ms as an available SL time slot through resource pool time domain resource indication information (timeresourcepool and periodresourcePool). For example, periodResourcePool is 10ms (containing 20 slots at 30kHz subcarrier spacing), timeresourcepool is a bitmap of length 20: 00001 00001 00001 00001, where 1 indicates that the corresponding slot is an SL available slot and 0 indicates that the corresponding slot is an unavailable SL slot.

The method for configuring the direct link resource is introduced from the terminal side, and is further described from the base station side.

As shown in fig. 5, the method for configuring direct link resources according to the embodiment of the present invention, when applied to a base station side, includes:

step 51, sending configuration information of a bandwidth part BWP to a terminal, wherein the configuration information of the BWP includes first symbol indication information and second symbol indication information.

Through the above steps, in the embodiment of the present invention, the base station sends the configuration information of the BWP to the terminal, and configures two symbol indication information for each BWP, where the two symbol indication information are respectively used for indicating SL available resources at a symbol level, so that fragmentation of uplink resources can be reduced or avoided, the network has flexibility in scheduling different service packet sizes, and network performance is improved.

Specifically, the first symbol indication information includes:

The second symbol indication information includes:

According to at least one embodiment of the present invention, the base station may further send time division duplex, TDD, uplink and downlink configuration information and resource pool configuration information to the terminal;

wherein the TDD uplink and downlink configuration information includes at least one of the following: a first uplink and downlink transmission period P, a second uplink and downlink transmission period P ₂ ；

The resource pool configuration information includes: the resource pool time domain information is used for indicating time domain resources in the resource pool period, and the resource pool period is used for indicating a repetition period of the resource pool time domain information.

According to at least one embodiment of the present invention, the resource pool period P included in the resource pool configuration information _v Is the first uplink and downlink transmission period P and the second uplink and downlink transmission period P ₂ An integer multiple of the sum; or, the resource pool period P contained in the resource pool configuration information _v Can be P + P ₂ Trimming; or, the resource pool period P included in the resource pool configuration information _v Satisfies mod (P) _v ，(P+P ₂ ))＝0。

According to at least one embodiment of the present invention, the resource pool period P included in the resource pool configuration information _v May be an integer multiple of the first uplink and downlink transmission period P, or P _v Can be divided exactly by the first uplink and downlink transmission period P, or P _v Satisfies mod (P) _v ，P)＝0。

According to at least one embodiment of the present invention, the resource pool period included in the resource pool configuration information includes a candidate value Pv satisfying the following condition:

According to at least one embodiment of the present invention, the resource pool period P included in the resource pool configuration information _v May be an integer multiple of 20 ms; or P _v Divisible by 20 ms; or P _v Satisfies mod (P) _v ，20ms)＝0。

The method of the embodiments of the present invention is described above. An apparatus for carrying out the above method is further provided below.

Referring to fig. 6, an embodiment of the present invention provides a terminal 60, including:

an obtaining module 61, configured to obtain configuration information of a bandwidth portion BWP, where the configuration information of the BWP includes first symbol indication information and second symbol indication information;

a determining module 62, configured to determine an SL available symbol in an available timeslot according to the first symbol indication information and the second symbol indication information.

Optionally, the first symbol indication information includes:

The second symbol indication information includes:

Optionally, the obtaining module is further configured to obtain TDD uplink and downlink configuration information and resource pool configuration information;

wherein the TDD uplink and downlink configuration information includesAt least one of: a first uplink and downlink transmission period P, a second uplink and downlink transmission period P ₂ ；

Optionally, the TDD uplink and downlink configuration information, the BWP configuration information, and the resource pool configuration information are preconfigured by the terminal or obtained from a high-level signaling sent by the network.

Optionally, the determining module is further configured to determine, according to the resource pool configuration information, SL available timeslots in a first uplink and downlink transmission period and a second uplink and downlink transmission period;

and determining available symbols of a through link in the SL available time slots in the first uplink and downlink transmission period according to one of the first symbol indication information and the second symbol indication information, and determining available symbols of the SL in the SL available time slots in the second uplink and downlink transmission period according to the other one of the first symbol indication information and the second symbol indication information.

According to at least one embodiment of the present invention, the resource pool period P included in the resource pool configuration information _v Is the first uplink and downlink transmission period P and the second uplink and downlink transmission period P ₂ Integer multiples of the sum; or, the resource pool period P contained in the resource pool configuration information _v Can be P + P ₂ Trimming; or, the resource pool period P contained in the resource pool configuration information _v Satisfies mod (P) _v ，(P+P ₂ ) ) =0. For example, when the first uplink and downlink transmission period P in the dual period is 2ms and the second uplink and downlink transmission period P is 0.5ms, the period resource pool configured by NR V2X needs to be P _d Integer multiple of 5 ms. Here, P _d Representing a double period, i.e. P _d ＝P+P ₂ 。

According to at least one embodiment of the present invention, the resource pool period P included in the resource pool configuration information _v May be the first uplink and downlinkInteger multiples of transmission period P, or P _v Can be divided exactly by the first uplink and downlink transmission period P, or P _v Satisfies mod (P) _v ，P)＝0。

Optionally, the determining module is further configured to:

determining a resource pool period P _v Each of (P + P) ₂ ) A through link available symbol in an SL available time slot in a first uplink and downlink transmission period P in the period is a continuous first SL available symbol starting from a first SL starting symbol indicated by first symbol indication information;

determining a resource pool period P _v Each of (P + P) ₂ ) Second uplink and downlink transmission period P in the period ₂ The through-link available symbols in the SL available slots within are consecutive second SL available symbols starting from the second SL start symbol indicated by the second symbol indication information.

Referring to fig. 7, a schematic structural diagram of a terminal according to an embodiment of the present invention is shown, where the terminal 700 includes: a processor 701, a transceiver 702, a memory 703, a user interface 704 and a bus interface.

In this embodiment of the present invention, the terminal 700 further includes: programs stored on the memory 703 and operable on the processor 701.

The processor 701 implements the following steps when executing the program:

acquiring configuration information of a bandwidth part BWP, wherein the configuration information of BWP comprises first symbol indication information and second symbol indication information;

It can be understood that, in the embodiment of the present invention, when the computer program is executed by the processor 701, each process of the embodiment of the configuration method for a direct link resource shown in fig. 3 may be implemented, and the same technical effect may be achieved.

In FIG. 7, the bus architecture may include any number of interconnected buses and bridges, with various circuits representing one or more processors, in particular processor 701, and memory, in particular memory 703 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 702 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. The user interface 704 may also be an interface capable of interfacing with a desired device for different user devices, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 701 is responsible for managing the bus architecture and general processing, and the memory 703 may store data used by the processor 701 in performing operations.

In some embodiments of the invention, there is also provided a computer readable storage medium having a program stored thereon, which when executed by a processor, performs the steps of:

determining the SL available symbol in the available timeslot according to the first symbol indication information and the second symbol indication information, where the program is executed by the processor, and can implement all implementation manners in the above configuration method for the direct link resource applied to the terminal side, and can achieve the same technical effect, and details are not repeated here to avoid repetition.

An embodiment of the present invention provides a base station 80 shown in fig. 8, including:

a sending module 81, configured to send configuration information of a bandwidth part BWP to a terminal, where the configuration information of the BWP includes first symbol indication information and second symbol indication information.

Optionally, the first symbol indication information includes:

a first SL start symbol to indicate a start symbol of a first SL available symbol within an available slot;

The second symbol indication information includes:

a second SL start symbol for indicating a start symbol of a second SL available symbol within the available slot;

Optionally, the sending module is further configured to send time division duplex TDD uplink and downlink configuration information and resource pool configuration information to the terminal;

wherein, the TDD uplink and downlink configuration information includes at least one of the following: a first uplink/downlink transmission period P, a second uplink/downlink transmission period P ₂ ；

According to at least one embodiment of the present invention, the resource pool period P included in the resource pool configuration information _v Is the first uplink and downlink transmission period P and the second uplink and downlink transmission period P ₂ Integer multiples of the sum; or, the resource pool period P contained in the resource pool configuration information _v Can be P + P ₂ Trimming; or, the resource pool period P contained in the resource pool configuration information _v Satisfies mod (P) _v ，(P+P ₂ ))＝0。

candidate value P _v Is the first uplink and downlink transmission period P and the second uplink and downlink transmission period P ₂ Integer multiple of the sum, or, P _v Can be P + P ₂ Trimming; or, P _v Satisfies mod (P) _v ，(P+P ₂ ))＝0。

the candidate value Pv is an integral multiple of the first uplink and downlink transmission period P, or P _v Can be divided by the first uplink and downlink transmission period P, or P _v Satisfies mod (P) _v ，P)＝0。

Referring to fig. 9, an embodiment of the present invention provides a structural diagram of a base station 900, including: a processor 901, a transceiver 902, a memory 903, and a bus interface, wherein:

in this embodiment of the present invention, the base station 900 further includes: a program stored on a memory 903 and executable on a processor 901, which when executed by the processor 901 performs the steps of:

transmitting configuration information of a bandwidth part BWP to a terminal, wherein the configuration information of BWP includes first symbol indication information and second symbol indication information

It can be understood that, in the embodiment of the present invention, when being executed by the processor 901, the computer program can implement each process of the configuration method embodiment of the direct link resource shown in fig. 5, and can achieve the same technical effect, and in order to avoid repetition, details are not described here again.

In fig. 9, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 901 and various circuits of memory represented by memory 903 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 902 may be a plurality of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium.

The processor 901 is responsible for managing a bus architecture and general processing, and the memory 903 may store data used by the processor 901 in performing operations.

When executed by the processor, the program can implement all implementation manners in the method for configuring the direct link resource applied to the base station, and can achieve the same technical effect, and is not described herein again to avoid repetition.

In the configuration method of the direct link resource provided in the above embodiment, the problem in the prior art is solved by configuring SL available resources at two symbol levels for each BWP, and the embodiment of the present invention may also configure SL available resources at a symbol level for each resource pool, and may also achieve a type effect, which will be further described with reference to the accompanying drawings.

Referring to fig. 10, when applied to a terminal, the method for configuring direct link resources according to an embodiment of the present invention includes:

step 101, obtaining resource pool configuration information, wherein the resource pool configuration information comprises symbol indication information.

Here, the embodiment of the present invention introduces symbol indication information into the resource pool configuration information, and configures, for each resource pool, corresponding symbol indication information, where the symbol indication information is used to indicate SL available symbols of SL available slots in the corresponding resource pool.

Step 102, according to the symbol indication information, determining an SL available symbol in the SL available slot indicated by the resource pool configuration information.

Through the steps, the embodiment of the invention directly introduces the symbol indication information of the SL available resources at the symbol level into the resource pool configuration, thereby reducing or avoiding the fragmentation of uplink resources, ensuring that the network has the flexibility of scheduling different service packet sizes and improving the network performance.

Optionally, the symbol indication information includes:

an SL start symbol for indicating a start symbol of an SL available symbol within an available slot;

an SL symbol length indicating the number of symbols of SL available symbols within the available slot.

According to at least one embodiment of the present invention, the resource pool configuration information may be pre-configured by the terminal or obtained from higher layer signaling sent by the network.

According to at least one embodiment of the present invention, the resource pool configuration information further includes: the resource pool time domain information is used for indicating time domain resources in the resource pool period, and the resource pool period is used for indicating a repetition period of the resource pool time domain information; before the step 102, the terminal may further include TDD uplink and downlink configuration information, where the TDD uplink and downlink configuration information includes at least one of the following: a first uplink/downlink transmission period P, a second uplink/downlink transmission period P ₂ 。

According to at least one embodiment of the present invention, the resource pool period P included in the resource pool configuration information _v Is the first uplink and downlink transmission period P and the second uplink and downlink transmission period P ₂ Integer multiples of the sum; or, the resource pool period P contained in the resource pool configuration information _v Can be P + P ₂ Trimming; or, the resource pool period P contained in the resource pool configuration information _v Satisfies mod (P) _v ，(P+P ₂ ) ) =0. For example, when the first uplink and downlink transmission period P in the dual period is 2ms and the second uplink and downlink transmission period P is 0.5ms, the period resource pool configured by NR V2X needs to be P _d Integer multiples of =5 ms. Here, P _d Representing a double period, i.e. P _d ＝P+P ₂ 。

the candidate value Pv is an integral multiple of the first uplink and downlink transmission period P, or P _v Can be divided exactly by the first UL/DL transmission period P, or P _v Satisfies mod (P) _v ，P)＝0。

According to at least one embodiment of the invention, the terminal does not expect that at least one DL or flexible symbol is included in the SL available symbols in the available time slot, wherein the SL available symbols are determined according to the symbol indication information. That is, the SL available symbols in the available slot determined by the terminal according to the symbol indication information do not include DL symbols or flexible symbols.

Referring to fig. 11, when applied to a base station, the method for configuring direct link resources according to the embodiment of the present invention includes:

step 111, sending resource pool configuration information to a terminal, wherein the resource pool configuration information comprises symbol indication information.

Through the steps, the base station sends the configuration information of the resource pool to the terminal, and configures the SL available resources at the symbol level for the resource pool, so that fragmentation of uplink resources can be reduced or avoided, the network has flexibility of scheduling different service packet sizes, and the network performance is improved.

Optionally, the symbol indication information includes:

a SL start symbol for indicating a start symbol of a SL available symbol within an available slot;

Optionally, the resource pool configuration information further includes: resource poolThe resource pool time domain information is used for indicating time domain resources in a resource pool period, and the resource pool period is used for indicating a repetition period of the resource pool time domain information; the base station may further send Time Division Duplex (TDD) uplink and downlink configuration information to the terminal, where the TDD uplink and downlink configuration information includes at least one of the following: a first uplink/downlink transmission period P, a second uplink/downlink transmission period P ₂ 。

According to at least one embodiment of the present invention, the resource pool period P included in the resource pool configuration information _v Can be an integer multiple of 20 ms; or P _v Can be divided by 20 ms; or P _v Satisfies mod (P) _v ，20ms)＝0。

Referring to fig. 12, an embodiment of the present invention provides a terminal 120, including:

an obtaining module 121, configured to obtain resource pool configuration information, where the resource pool configuration information includes symbol indication information;

a determining module 122, configured to determine, according to the symbol indication information, an SL available symbol in the SL available slot indicated by the resource pool configuration information.

Optionally, the symbol indication information includes:

Optionally, the resource pool configuration information is preconfigured by the terminal or obtained from a higher layer signaling sent by the network.

Optionally, the resource pool configuration information further includes: the resource pool time domain information is used for indicating time domain resources in the resource pool period, and the resource pool period is used for indicating a repetition period of the resource pool time domain information; the obtaining module is further configured to obtain TDD uplink and downlink configuration information, where the TDD uplink and downlink configuration information includes at least one of: a first uplink and downlink transmission period P, a second uplink and downlink transmission period P ₂ 。

According to at least one embodiment of the invention, the resource pool configuration informationResource pool period P contained therein _v Is the first uplink and downlink transmission period P and the second uplink and downlink transmission period P ₂ Integer multiples of the sum; or, the resource pool period P included in the resource pool configuration information _v Can be P + P ₂ Trimming; or, the resource pool period P included in the resource pool configuration information _v Satisfies mod (P) _v ，(P+P ₂ ))＝0。

the candidate value Pv is integral multiple of the first uplink and downlink transmission period P, or P _v Can be divided exactly by the first UL/DL transmission period P, or P _v Satisfies mod (P) _v ，P)＝0。

According to at least one embodiment of the present invention, the terminal further includes:

a receiving module, configured to determine that the SL available symbol in the available slot includes at least one DL or flex symbol without expecting to determine according to the first symbol indication information and/or the second symbol indication information.

Referring to fig. 13, a schematic structural diagram of a terminal 1300 according to an embodiment of the present invention includes: a processor 1301, a transceiver 1302, a memory 1303, a user interface 1304, and a bus interface.

In this embodiment of the present invention, the terminal 1300 further includes: programs stored in the memory 1303 and executable on the processor 1301.

The processor 1301, when executing the program, implements the following steps:

according to the symbol indication information, determining SL available symbols in SL available time slots indicated by the resource pool configuration information

It can be understood that, in the embodiment of the present invention, when the computer program is executed by the processor 1301, each process of the embodiment of the configuration method for a direct link resource shown in fig. 10 may be implemented, and the same technical effect may be achieved.

In fig. 13, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 1301 and various circuits of memory represented by memory 1303 linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1302 may be a plurality of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. For different user devices, the user interface 1304 may also be an interface capable of interfacing externally to a desired device, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 1301 is responsible for managing the bus architecture and general processing, and the memory 1303 may store data used by the processor 1301 in performing operations.

When executed by the processor, the program can implement all implementation manners in the configuration method of the direct link resource applied to the terminal side, and can achieve the same technical effect, and is not described herein again to avoid repetition.

An embodiment of the present invention provides a base station 140 shown in fig. 14, including:

a sending module 141, configured to send resource pool configuration information to a terminal, where the resource pool configuration information includes symbol indication information.

Optionally, the symbol indication information includes:

an SL symbol length to indicate the number of symbols of the SL available symbols within the available slot.

Optionally, the resource pool configuration information further includes: the resource pool time domain information is used for indicating time domain resources in the resource pool period, and the resource pool period is used for indicating a repetition period of the resource pool time domain information;

the sending module is further configured to send TDD uplink and downlink configuration information to the terminal, where the TDD uplink and downlink configuration information includes at least one of the following: a first uplink/downlink transmission period P, a second uplink/downlink transmission period P ₂ 。

According to at least one embodiment of the present invention, the resource pool period P included in the resource pool configuration information _v Is the first uplink and downlink transmission periodP and a second uplink and downlink transmission period P ₂ Integer multiples of the sum; or, the resource pool period P contained in the resource pool configuration information _v Can be P + P ₂ Trimming; or, the resource pool period P contained in the resource pool configuration information _v Satisfies mod (P) _v ，(P+P ₂ ))＝0。

Referring to fig. 15, an embodiment of the present invention provides a structural schematic diagram of a base station 1500, including: a processor 1501, a transceiver 1502, a memory 1503, and a bus interface, wherein:

in this embodiment of the present invention, the base station 1500 further includes: a program stored on memory 1503 and executable on processor 1501, which when executed by processor 1501, performs the steps of:

sending resource pool configuration information to a terminal, wherein the resource pool configuration information comprises symbol indication information

It can be understood that, in the embodiment of the present invention, when being executed by the processor 1501, the computer program can implement each process of the embodiment of the configuration method for a direct link resource shown in fig. 11, and can achieve the same technical effect, and in order to avoid repetition, details are not described here again.

In fig. 15, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 1501, and various circuits, represented by memory 1503, linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1502 may be a plurality of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium.

The processor 1501 is responsible for managing a bus architecture and general processing, and the memory 1503 may store data used by the processor 1501 in performing operations.

When executed by the processor, the program can implement all implementation manners in the configuration method of the direct link resource applied to the network side device, and can achieve the same technical effect, and is not described herein again to avoid repetition.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one position, or may be distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment of the present invention.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention or a part thereof which substantially contributes to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk or an optical disk, and various media capable of storing program codes.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A method for configuring direct link resources is applied to a terminal, and is characterized by comprising the following steps:

determining an SL available symbol in an available time slot according to the first symbol indication information and the second symbol indication information;

before the step of determining SL available symbols within available slots according to the first symbol indication information and the second symbol indication information, the method further comprises:

acquiring TDD (time division duplex) uplink and downlink configuration information and resource pool configuration information;

wherein the TDD uplink and downlink configuration information includes at least one of the following: a first uplink and downlink transmission period P, a second uplink and downlink transmission period P ₂ (ii) a The resource pool configuration information includes: resource pool period and resource pool time domain information, wherein the resource pool time domain information is used for indicating the resource poolThe resource pool period is used for indicating a repetition period of the resource pool time domain information;

determining an SL available symbol in an available slot according to the first symbol indication information and the second symbol indication information, including: according to the resource pool configuration information, determining SL available time slots in a first uplink and downlink transmission period and a second uplink and downlink transmission period; determining available symbols of a through link in SL available time slots in a first uplink and downlink transmission period according to one of the first symbol indication information and the second symbol indication information, and determining SL available symbols in SL available time slots in a second uplink and downlink transmission period according to the other one of the first symbol indication information and the second symbol indication information;

determining available symbols of a through link in an SL available slot in a first uplink and downlink transmission period according to one of the first symbol indication information and the second symbol indication information, and determining SL available symbols in an SL available slot in a second uplink and downlink transmission period according to the other of the first symbol indication information and the second symbol indication information, including: determining a resource pool period P _v Each of (P + P) ₂ ) The available symbols of the through link in the available time slots of the SLs in the first uplink and downlink transmission period P in the period are consecutive first SL symbol length symbols starting from a first SL start symbol indicated by the first symbol indication information; determining a resource pool period P _v Each of (P + P) ₂ ) Second uplink and downlink transmission period P in the period ₂ The through-link available symbols in the SL available slot within are consecutive second SL symbol length symbols starting from the second SL start symbol indicated by the second symbol indication information.

2. The method of claim 1,

the first symbol indication information includes:

a first SL symbol length to indicate a number of symbols of a first SL available symbol within an available slot;

the second symbol indication information includes:

3. The method of claim 1, wherein the TDD uplink and downlink configuration information, the BWP configuration information, and the resource pool configuration information are pre-configured by the terminal or obtained from a higher layer signaling sent by the network.

4. The method of claim 1,

a resource pool period P contained in the resource pool configuration information _v Is the first uplink and downlink transmission period P and the second uplink and downlink transmission period P ₂ Integer multiples of the sum; or, the resource pool period P included in the resource pool configuration information _v Can be P + P ₂ Trimming; or, the resource pool period P contained in the resource pool configuration information _v Satisfies mod (P) _v ，（P+ P ₂ ））=0；

Or,

a resource pool period P contained in the resource pool configuration information _v Is an integral multiple of the first uplink and downlink transmission period P, or P _v Can be divided exactly by the first uplink and downlink transmission period P, or P _v Satisfies mod (P) _v ，P）=0；

Or,

the resource pool period included in the resource pool configuration information includes a candidate value Pv that satisfies the following condition: candidate value P _v Is the first uplink and downlink transmission period P and the second uplink and downlink transmission period P ₂ Integer multiple of the sum, or, P _v Can be P + P ₂ Trimming; or, P _v Satisfies mod (P) _v ，（P+ P ₂ ））=0；

Or,

the resource pool period included in the resource pool configuration information includes a candidate value Pv that satisfies the following condition:

the candidate value Pv is an integral multiple of the first uplink and downlink transmission period P, or P _v Can be divided exactly by the first UL/DL transmission period P, or P _v Satisfies mod (P) _v ，P）=0；

Or,

a resource pool period P contained in the resource pool configuration information _v Is an integral multiple of 20 ms; or P _v Divisible by 20 ms; or P _v Satisfies mod (P) _v ，20ms）=0。

5. The method of claim 1, further comprising:

the terminal does not expect at least one DL or flexible symbol to be included in the SL available symbols in the available slot.

6. A method for configuring direct link resources is applied to a base station, and is characterized by comprising the following steps:

transmitting configuration information of a bandwidth part BWP to a terminal;

the method further comprises the following steps:

sending TDD uplink and downlink configuration information and resource pool configuration information to the terminal;

wherein the TDD uplink and downlink configuration information includes at least one of the following: a first uplink/downlink transmission period P, a second uplink/downlink transmission period P ₂ (ii) a The resource pool configuration information includes: the resource pool time domain information is used for indicating time domain resources in the resource pool period, and the resource pool period is used for indicating a repetition period of the resource pool time domain information;

the configuration information of the BWP comprises first symbol indication information and second symbol indication information, so that the terminal determines SL available symbols in available time slots according to the first symbol indication information and the second symbol indication information;

determining an SL available symbol in an available slot according to the first symbol indication information and the second symbol indication information, including: according to the resource pool configuration information, determining SL available time slots in a first uplink and downlink transmission period and a second uplink and downlink transmission period; determining available symbols of a through link in an SL available time slot in a first uplink and downlink transmission period according to one of the first symbol indication information and the second symbol indication information, and determining SL available symbols in an SL available time slot in a second uplink and downlink transmission period according to the other of the first symbol indication information and the second symbol indication information;

determining available symbols of a through link in an SL available slot in a first uplink and downlink transmission period according to one of the first symbol indication information and the second symbol indication information, and determining SL available symbols in an SL available slot in a second uplink and downlink transmission period according to the other of the first symbol indication information and the second symbol indication information, including: determining a resource pool period P _v Each of (P + P) ₂ ) A through link available symbol in an SL available time slot in a first uplink and downlink transmission period P in the period is a continuous first SL symbol length symbol starting from a first SL starting symbol indicated by first symbol indication information; determining a resource pool period P _v Each of (P + P) ₂ ) Second uplink and downlink transmission period P in the period ₂ The through-link available symbols in the SL available slot within are consecutive second SL symbol length symbols starting from the second SL start symbol indicated by the second symbol indication information.

7. The method of claim 6,

a resource pool period P contained in the resource pool configuration information _v Is the first uplink and downlink transmission period P and the second uplink and downlink transmission period P ₂ Integer multiples of the sum; or, the resource pool period P contained in the resource pool configuration information _v Can be P + P ₂ Trimming; or, the resource pool period P contained in the resource pool configuration information _v Satisfies mod (P) _v ，（P+ P ₂ ））=0；

Or,

the candidate value Pv is integral multiple of the first uplink and downlink transmission period P, or P _v Can be divided exactly by the first UL/DL transmission period P, or P _v Satisfies mod (P) _v ，P）=0；

Or,

a resource pool period P contained in the resource pool configuration information _v Is an integer multiple of 20 ms; or P _v Divisible by 20 ms; or P _v Satisfies mod (P) _v ，20ms）=0。

8. A terminal comprising a transceiver and a processor, wherein,

the processor is configured to determine an SL available symbol in an available slot according to the first symbol indication information and the second symbol indication information;

the processor is further configured to obtain Time Division Duplex (TDD) uplink and downlink configuration information and resource pool configuration information before the step of determining the SL available symbol in the available time slot according to the first symbol indication information and the second symbol indication information;

wherein, the TDD uplink and downlink configuration information includes at least one of the following: a first uplink and downlink transmission period P, a second uplink and downlink transmission period P ₂ (ii) a The resource pool configuration information includes: the resource pool time domain information is used for indicating time domain resources in the resource pool period, and the resource pool period is used for indicating a repetition period of the resource pool time domain information;

determining available symbols of a through link in an SL available slot in a first uplink and downlink transmission period according to one of the first symbol indication information and the second symbol indication information, and determining SL available symbols in an SL available slot in a second uplink and downlink transmission period according to the other of the first symbol indication information and the second symbol indication information, including: determining a resource pool period P _v Each of (P + P) ₂ ) The available symbols of the through link in the available time slots of the SLs in the first uplink and downlink transmission period P in the period are consecutive first SL symbol length symbols starting from a first SL start symbol indicated by the first symbol indication information; determining a resource pool period P _v Each of (P + P) ₂ ) Second uplink and downlink transmission period P in the period ₂ The through link available symbol in the SL available time slot in the inner is started from the second SL starting symbol indicated by the second symbol indication informationOf consecutive second SL symbols length symbols.

9. A base station comprising a transceiver and a processor, wherein,

the transceiver is configured to send configuration information of a bandwidth segment BWP to a terminal, and send TDD uplink and downlink configuration information and resource pool configuration information to the terminal;

wherein the TDD uplink and downlink configuration information includes at least one of the following: a first uplink and downlink transmission period P, a second uplink and downlink transmission period P ₂ (ii) a The resource pool configuration information includes: the resource pool time domain information is used for indicating time domain resources in the resource pool period, and the resource pool period is used for indicating a repetition period of the resource pool time domain information;

wherein the configuration information of the BWP includes first symbol indication information and second symbol indication information, so that the terminal determines SL available symbols within available slots according to the first symbol indication information and the second symbol indication information;

determining available symbols of a through link in an SL available time slot in a first uplink and downlink transmission period according to one of the first symbol indication information and the second symbol indication information, and determining SL available symbols and packets in an SL available time slot in a second uplink and downlink transmission period according to the other of the first symbol indication information and the second symbol indication informationComprises the following steps: determining a resource pool period P _v Each of (P + P) ₂ ) A through link available symbol in an SL available time slot in a first uplink and downlink transmission period P in the period is a continuous first SL symbol length symbol starting from a first SL starting symbol indicated by first symbol indication information; determining a resource pool period P _v Each of (P + P) ₂ ) Second uplink and downlink transmission period P in the period ₂ The through-link available symbols in the SL available slot within are consecutive second SL symbol length symbols starting from the second SL start symbol indicated by the second symbol indication information.

10. A terminal, comprising: processor, memory and program stored on the memory and executable on the processor, which when executed by the processor, performs the steps of the configuration method of through-link resources as claimed in any one of claims 1 to 5.

11. A base station, comprising: processor, memory and program stored on said memory and executable on said processor, said program, when executed by said processor, implementing the steps of the configuration method of a through-link resource according to any of claims 6 to 7.

12. A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, which computer program, when being executed by a processor, carries out the steps of the configuration method of through-link resources according to any one of claims 1 to 7.