CN108307438B

CN108307438B - Data sending method, data receiving method, terminal equipment and network equipment

Info

Publication number: CN108307438B
Application number: CN201710028148.XA
Authority: CN
Inventors: 吕永霞; 马蕊香
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-01-13
Filing date: 2017-01-13
Publication date: 2020-12-01
Anticipated expiration: 2037-01-13
Also published as: CN108307438A

Abstract

A data sending method, a data receiving method, a terminal device and a network device are beneficial to avoiding the continuous occurrence of resource conflict. The data transmission method comprises the following steps: a first terminal device receives a first physical layer signaling sent by a network device in a first time period, where the first physical layer signaling includes first resource pool indication information of the first terminal device, and the first resource pool indication information is used to indicate a first resource pool used by the first terminal device in a second time period, where the first resource pool is one of multiple resource pools configured for the first terminal device, and each resource pool of the multiple resource pools includes at least one uplink resource; and the first terminal equipment transmits data to the network equipment by adopting first uplink resources in the second time period, wherein the first uplink resources are resources in the first resource pool indicated by the first resource pool indication information.

Description

Data sending method, data receiving method, terminal equipment and network equipment

Technical Field

The present invention relates to the field of communications, and more particularly, to a data transmission method, a data reception method, a terminal device, and a network device.

Background

Future wireless communication systems are striving to support higher system performance, support multiple traffic types, different deployment scenarios and wider spectrum ranges. In order to satisfy the low-latency service transmission, a technical scheme of Grant Free (Grant Free) transmission is proposed in the industry. In the authorization-free transmission, the base station pre-configures transmission resources for the terminal equipment, and when uplink data arrives, the terminal equipment directly adopts the pre-configured transmission resources to transmit the uplink data to the base station without requesting the base station to allocate the resources in a scheduling request mode.

In the unlicensed transmission, the base station may pre-configure uplink transmission resources for the terminal device in two ways: one scheme is to pre-configure orthogonal transmission resources for different terminal devices, so that the requirements of time delay and reliability of users can be ensured, but the frequency spectrum utilization rate of the system can be greatly reduced; the other scheme is that a common resource pool is configured for a plurality of terminal devices, and when uplink data arrives, the terminal devices select resources from the pre-configured resource pool for data transmission. In this way, a situation that different terminal devices sharing the resource pool select the same resource for data transmission may occur, that is, a resource conflict occurs, which may affect uplink reception of the base station, thereby reducing data transmission performance.

Disclosure of Invention

The embodiment of the invention provides a data sending method, a data receiving method, terminal equipment and network equipment, which are beneficial to avoiding the continuous occurrence of resource conflict.

In a first aspect, a data sending method is provided, including: a first terminal device receives first physical layer signaling from a network device in a first time period, wherein the first physical layer signaling comprises first resource pool indication information of the first terminal device, and the first resource pool indication information is used for indicating a first resource pool used by the first terminal device in a second time period, wherein the first resource pool is one of a plurality of resource pools configured for the first terminal device, and each resource pool in the plurality of resource pools comprises at least one uplink resource; and the first terminal equipment transmits data to the network equipment by adopting a first uplink resource in the second time period, wherein the first uplink resource is a resource in the first resource pool indicated by the first resource pool indication information.

In a second aspect, a data receiving method is provided, including: a network device sends a first physical layer signaling to a first terminal device within a first time period, where the first physical layer signaling includes first resource pool indication information of the first terminal device, and the first resource pool indication information is used to indicate a first resource pool used by the first terminal device within a second time period, where the first resource pool is one of multiple resource pools configured for the first terminal device, and each resource pool of the multiple resource pools includes at least one uplink resource; and the network equipment receives the uplink data sent by the first terminal equipment by adopting the first uplink resource in the first resource pool in the second time period.

The first terminal device may be configured with a plurality of resource pools for uplink transmission. The network device may send first resource pool indication information to the first terminal device for a first time period. The first resource pool indication information may be used to indicate that the first terminal device uses the first resource pool within the second time period. Wherein the plurality of resource pools may include the first resource pool.

The second time period may be after the first time period. Optionally, the second time period may immediately follow the first time period, or the second time period may be separated from the first time period by a period of time. Alternatively, the length of the first time period may be the same as or different from the length of the second time period.

Optionally, the resource pool used by the terminal device may be updated periodically, where in a certain resource pool update period, the updated resource pool of the terminal device may be the same as or different from the resource pool before updating.

Optionally, the first time period may be specifically a first resource pool update period, the second time period may be specifically a second resource pool update period, and the second resource pool update period may be located after the first resource pool update period.

Optionally, the second resource pool update period may be a resource pool update period next to the first resource pool update period.

Therefore, in this embodiment of the present invention, a network device may send a first physical layer signaling to a network device, where the first physical layer signaling includes first resource pool indication information of the first terminal device, where the first resource pool indication information is used to indicate a first resource pool used by the first terminal device in a second time period, and the first terminal device may determine, according to the first physical layer signaling sent by the network device, the first resource pool used by itself in the second time period, and send uplink data to the network device using a first uplink resource in the first resource pool in the second time period, which is beneficial to avoiding persistent occurrence of resource conflicts, reducing transmission delay, and improving resource utilization.

In the embodiment of the invention, the network equipment can dynamically allocate the resource pool used by the terminal equipment, which is beneficial to avoiding the problems of time delay increase and reliability reduction caused by system load increase and terminal resource conflict probability improvement. In addition, compared with the method for reserving fixed transmission resources for the terminal equipment, the embodiment of the invention is beneficial to avoiding the problem of low utilization rate of system resources caused by reduced system load and surplus reserved resources.

Optionally, the first terminal device is one of N terminal devices, the first physical layer signaling further includes resource pool indication information of N-1 terminal devices of the N terminal devices except the first terminal device, and N is a positive integer greater than 1. The method further comprises the following steps: the first terminal device determines the first resource pool according to first resource pool indication information of the first terminal device included in the first physical layer signaling. Correspondingly, the network device sends the first physical layer signaling to each of the N-1 terminal devices within the first time period.

Optionally, the network device may send first physical layer signaling to N terminal devices including the first terminal device, where the first physical layer signaling may include resource pool indication information of each of the N terminal devices, where the resource pool indication information of each terminal device may be used to indicate a resource pool used by the each terminal device in the second time period.

In this way, the first physical layer signaling sent by the network device in the first time period may include resource pool indication information of a plurality of terminal devices, thereby saving signaling overhead.

Optionally, the first terminal device may determine a field corresponding to the first terminal device in the first physical layer signaling, and obtain the first resource pool indication information from the corresponding field.

Optionally, the network device may broadcast the first physical layer signaling, or may send the first physical layer signaling to the N terminal devices in a multicast manner.

Optionally, the first physical layer signaling includes N fields for carrying resource pool indication information of the N terminal devices, and the N fields are in one-to-one correspondence with the N terminal devices.

Optionally, the determining, by the first terminal device, the first resource pool may include: and the first terminal equipment determines the first resource pool according to the first resource pool indication information carried by the field corresponding to the first terminal equipment in the N fields.

At this time, optionally, the resource pool indication information carried by each field of the N fields may include information of a resource pool used by the terminal device corresponding to the field in the second time period.

In this way, by setting N fields corresponding to N terminal devices one to one, each field bears resource pool indication information of the corresponding terminal device, the flexibility of the network device in allocating resource pools and sending the resource pool indication information is high, and the network device can indicate resource pools used by any number and type of terminal devices in the same physical layer signaling, thereby being beneficial to the network device to send the resource pool indication information by using as little physical layer signaling as possible.

Optionally, the first physical layer signaling includes N +1 fields, N fields in the N +1 fields correspond to the N terminal devices one to one, where each field in the N fields carries resource pool update indication information of the corresponding terminal device, 1 field except the N fields in the N +1 fields carries resource pool information, and the resource pool update indication information indicates whether to use the resource pool indicated by the resource pool information in the second time period.

The first resource pool indication information may include the resource pool update indication information and the resource pool information carried by a field corresponding to the first terminal device.

Optionally, each of the N fields corresponding to the N terminal devices may occupy 1 bit.

Thus, by setting N fields for carrying resource pool update indication information of N terminal devices and 1 field for carrying resource pool information, the total bit number of physical layer signaling can be reduced, thereby further reducing signaling overhead.

Optionally, the first physical layer signaling may include N fields corresponding to the N terminal devices one to one and a field for carrying resource pool information, where each field in the N fields may carry resource pool update indication information of the corresponding terminal device, and the resource pool update indication information may indicate whether to update the used resource pool within the second time period.

Optionally, the N terminal devices may use the same resource pool in the second time period.

Optionally, the determining, by the first terminal device, the first resource pool may include: the first terminal device determines the first resource pool according to the resource pool information and resource pool update indication information carried by a field corresponding to the first terminal device, wherein the resource pool information indicates the first resource pool, and the resource pool update indication information carried by the field corresponding to the first terminal device indicates whether to use the first resource pool indicated by the resource pool information in the second time period.

Optionally, if the resource pool update indication information carried by the field corresponding to the first terminal device indicates that the first terminal device uses the resource pool indicated by the resource pool information within the second time period, the first terminal device may determine the first resource pool according to the resource pool information.

Optionally, if the resource pool update indication information carried by the field corresponding to the first terminal device indicates that the first terminal device does not use the resource pool indicated by the resource pool information within the second time period, the first terminal device may determine to use the resource pool used within the first time period within the second time period.

Optionally, before the first terminal device receives the first physical layer signaling, the method further includes: the first terminal device receives a signaling which is sent by the network device and is dedicated to the first terminal device, wherein the signaling which is dedicated to the first terminal device includes an RNTI, the RNTI is common to the N terminal devices, and a CRC field of the first physical layer signaling is descrambled by using the RNTI.

Correspondingly, before the network device sends the first physical layer signaling to the first terminal device, the method may further include: the network device sends a signaling dedicated to the first terminal device, wherein the signaling dedicated to the first terminal device includes an RNTI, the RNTI is common to the N terminal devices, and a CRC field of the first physical layer signaling is scrambled by the RNTI.

Optionally, the signaling dedicated to the first terminal device may be specifically a higher layer signaling.

Optionally, the CRC of the first physical layer signaling is scrambled by using the RNTI, and the first terminal device may determine that the first physical layer signaling carries the first resource pool indication information according to the RNTI.

Optionally, the signaling dedicated to the first terminal device further includes: information of time-frequency resources occupied by the first physical layer signaling and/or information of a field corresponding to the first terminal device in the first physical layer signaling.

At this time, optionally, the first terminal device may detect the first physical layer signaling on the time-frequency resources occupied by the first physical layer signaling.

Optionally, the first terminal device may determine, according to the dedicated signaling of the first terminal device, a field corresponding to the first terminal device in the first physical layer signaling, and obtain the first resource pool indication information from the corresponding field.

Optionally, the network device may periodically send physical layer signaling indicating the resource pool used by the terminal device.

Optionally, the information of the time-frequency resource occupied by the first physical layer signaling includes: a time offset and/or a transmission period of the first physical layer signaling.

Optionally, before the first terminal device receives the first physical layer signaling, the method further includes: the first terminal device determines the first time period according to the time offset and/or the transmission cycle of the first physical layer signaling.

The first terminal device may detect the first physical layer signaling sent by the network device during the first time period.

Optionally, before the first terminal device receives the first physical layer signaling, the method further includes: the first terminal device receives the high-level signaling sent by the network device. Accordingly, before the network device sends the first physical layer signaling, the method further comprises: the network device sends a high-level signaling to the first terminal device. The higher layer signaling may indicate at least one resource pool, wherein the plurality of resource pools includes the at least one resource pool indicated by the higher layer signaling.

Optionally, the higher layer signaling may further indicate that one of the at least one resource pool is used as the initial resource pool of the first terminal device.

Optionally, before the first terminal device receives the first physical layer signaling, the method further includes: and the first terminal equipment receives a second physical layer signaling sent by the network equipment. Accordingly, before the network device sends the first physical layer signaling, the method further comprises: and the network equipment sends a second physical layer signaling to the first terminal equipment. The second physical layer signaling may indicate at least one resource pool, wherein the plurality of resource pools includes the at least one resource pool indicated by the second physical layer signaling.

Optionally, before the network device sends the first physical layer signaling, the method further includes: the network device determines the first resource pool used by the first terminal device in the second time period according to the history information of each resource pool in at least one resource pool, wherein the history information of each resource pool comprises at least one of the following information: the historical statistic information of the resource conflict of each resource pool and the historical statistic information of the uplink receiving performance corresponding to each resource pool.

Optionally, the at least one resource pool herein may include a resource pool used by the first terminal device in the first time period and/or the first resource pool.

Alternatively, the history information of the resource pool may be obtained by counting the behavior of the terminal device using the resource pool for one or more time periods.

In a third aspect, a terminal device is provided, configured to perform the method in the first aspect or any possible implementation manner of the first aspect.

In particular, the terminal device may comprise means for performing the method of the first aspect described above or any possible implementation manner of the first aspect.

In a fourth aspect, there is provided a network device for performing the method of the second aspect or any possible implementation manner of the second aspect.

In particular, the network device may comprise means for performing the method of the second aspect or any possible implementation of the second aspect.

In a fifth aspect, another terminal device is provided, including: a memory for storing instructions and a processor for executing the instructions stored by the memory, and when the processor executes the instructions stored by the memory, the execution causes the processor to perform the method of the first aspect or any possible implementation manner of the first aspect.

In a sixth aspect, another network device is provided, comprising: a memory for storing instructions and a processor for executing the instructions stored by the memory and which, when executed by the processor, causes the processor to carry out the method of the second aspect or any possible implementation of the second aspect.

Yet another aspect of the present application provides a computer-readable storage medium having stored therein instructions, which when executed on a computer, cause the computer to perform the method of the above-described aspects.

Yet another aspect of the present application provides a computer program product containing instructions which, when run on a computer, cause the computer to perform the method of the above-described aspects.

Drawings

Fig. 1 is a schematic diagram of a wireless communication system to which an embodiment of the present invention is applied.

Fig. 2 is a schematic flowchart of a data transmission and reception method according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of an example of first physical layer signaling in a data transmission and reception method according to an embodiment of the present invention.

Fig. 4 is another exemplary structural diagram of first physical layer signaling in a data transmission and reception method according to an embodiment of the present invention.

Fig. 5 is a schematic block diagram of a terminal device provided in an embodiment of the present invention.

Fig. 6 is a schematic block diagram of a network device provided by an embodiment of the present invention.

Fig. 7 is a schematic block diagram of a terminal device according to another embodiment of the present invention.

Fig. 8 is a schematic block diagram of a network device provided by another embodiment of the present invention.

Detailed Description

The technical solution in the embodiments of the present invention will be described below with reference to the accompanying drawings.

Fig. 1 is a block diagram of a wireless communication system 100 to which embodiments of the present invention may be applied. The System 100 may be a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a General Packet Radio Service (GPRS), a Long Term Evolution (Long Term Evolution, LTE) System, a LTE Frequency Division Duplex (FDD) System, a LTE Time Division Duplex (TDD), a Universal Mobile Telecommunications System (UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication System, a future 5G System, or the like.

As shown in fig. 1, the system 100 includes a network device 102 and a plurality of terminal devices 104 located within a coverage area of the network device 102, wherein the network device 102 may be connected to the plurality of terminal devices by wireless connection, wired connection, or other means, and the network device 102 may support simultaneous transmission of a plurality of cellular carriers. Fig. 1 exemplarily shows one network device and six terminal devices, alternatively, the system 100 may include a plurality of network devices and each network device may include other numbers of terminal devices within the coverage area, which is not limited in this embodiment of the present invention.

The Network in the embodiment of the present invention may refer to a Public Land Mobile Network (PLMN), a Device to Device (D2D) Network, an M2M Network, or other networks, fig. 1 is a simplified schematic diagram of an example, and the Network may further include other Network devices, which are not shown in fig. 1.

In embodiments of the present invention, a terminal device may refer to an access terminal, a User Equipment (UE), a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a User terminal, a wireless communication device, a User agent, or a User Equipment. An access terminal may be a cellular telephone, a cordless telephone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with Wireless communication capability, a computing device or other processing device connected to a Wireless modem, a vehicle mounted device, a wearable device, a terminal device in a future 5G Network or a terminal device in a future evolved Public Land Mobile Network (PLMN), etc.

In this embodiment of the present invention, the Network device may be a device for communicating with a terminal device, where the Network device may be a Base Transceiver Station (BTS) in a GSM system or a CDMA system, a Base Station (NodeB, NB) in a WCDMA system, an evolved Node B (eNB or eNodeB) in an LTE system, or a wireless controller in a Cloud Radio Access Network (CRAN), or the Network device may be a relay Station, an Access point, a vehicle-mounted device, a wearable device, a Network-side device in a future 5G Network, or a Network device in a future evolved PLMN Network, and the like.

The system 100 may support a plurality of Service types, such as enhanced Mobile Broadband (eMBB), Massive Machine Type Communication (mtc), Ultra-reliable and low latency communications (URLLC), Multimedia Broadcast Multicast Service (MBMS), and location services, among others. Optionally, the system 100 may also support different deployment scenarios, such as Indoor hotspots (Indoor hotspots), dense Urban areas (dense urbans), suburban areas, Urban Macro coverage (Urban Macro), high-speed rail scenarios, and so on. Optionally, the system 100 may support a wider frequency spectrum range, for example, a frequency spectrum range up to 100GHz, wherein the frequency spectrum range may include a low frequency part below 6GHz, or a high frequency part above 6GHz and up to 100 GHz.

Optionally, the system 100 may employ a Grant Free (Grant Free) transmission scheme, which may be suitable for uplink data transmission. In the authorization-free transmission mechanism, the terminal equipment does not need to request the network equipment to allocate transmission resources in a scheduling request mode, but directly adopts the pre-configured resources and carries out the transmission of uplink data, thereby reducing the system signaling overhead and reducing the transmission delay.

The unlicensed transmission can be understood as any one or more of the following meanings, or as a combination of some technical features of the various meanings:

1. the unlicensed transmission may refer to: the network equipment allocates and informs the terminal equipment of a plurality of transmission resources in advance; when the terminal equipment has the requirement of uplink data transmission, selecting at least one transmission resource from a plurality of transmission resources pre-allocated by the network equipment, and sending uplink data by using the selected transmission resource; and the network equipment detects the uplink data sent by the terminal equipment on at least one transmission resource in the plurality of pre-allocated transmission resources. The detection may be blind detection, or detection according to a certain control field in uplink data, or detection in other manners.

The blind detection may be understood as detection of data that may arrive without predicting whether data arrives. The blind detection may also be understood as a detection without an explicit signaling indication.

2. The unlicensed transmission may refer to: the network device pre-allocates and informs the terminal device of a plurality of transmission resources, so that when the terminal device has a requirement for uplink data transmission, at least one transmission resource is selected from the plurality of transmission resources pre-allocated by the network device, and the selected transmission resource is used for transmitting uplink data.

3. The unlicensed transmission may refer to: the terminal equipment acquires information of a plurality of pre-allocated transmission resources, selects at least one transmission resource from the plurality of transmission resources when uplink data transmission is required, and transmits the uplink data by using the selected transmission resource. The terminal device may obtain the information of the multiple transmission resources in multiple ways, for example, a mapping relationship between the terminal device and the transmission resources may be defined in a protocol, or indicated by a network device through an instruction, and so on.

4. The unlicensed transmission may refer to: the method for realizing uplink data transmission of the terminal equipment can be realized without dynamic scheduling of the network equipment, and the dynamic scheduling can be a scheduling mode that the network equipment needs to indicate transmission resources of uplink data transmission of the terminal equipment every time through signaling. Alternatively, the transmission resource may be one or more transmission time units of transmission resources after the time when the terminal device receives the signaling. One TTI may refer to a minimum Time unit for one Transmission, such as a TTI (Transmission Time Interval), and may be 1ms, or may be a predetermined TTI. Alternatively, implementing uplink data transmission of a terminal device may be understood as allowing data of two or more terminal devices to be transmitted on the same time-frequency resource.

5. The unlicensed transmission may refer to: the terminal equipment carries out uplink data transmission without authorization of the network equipment. The grant may refer to a terminal device sending an uplink scheduling request to a network device, and the network device sending an uplink grant (UL grant) to the terminal device after receiving the scheduling request, where the uplink grant is used to indicate an uplink transmission resource allocated to the terminal device.

6. The unlicensed transmission may refer to: a contention transmission mode, specifically, may refer to that a plurality of terminal devices perform uplink data transmission simultaneously on the same pre-allocated time-frequency resource without requiring a network device to perform authorization.

Optionally, the data may include service data or signaling data.

In the unlicensed transmission scheme, the transmission resources may include, but are not limited to, a combination of one or more of the following: time domain resources such as radio frames, subframes, symbols, etc.; frequency domain resources such as subcarriers, resource blocks, etc.; spatial domain resources such as transmit antennas, beams, etc.; code domain resources, such as Sparse Code Multiple Access (SCMA) codebooks, Low Density Signatures (LDS), CDMA codes, etc.; and (4) uplink pilot frequency resources.

It should be understood that the embodiment of the present invention is mainly applied to scheduling-free transmission, but the embodiment of the present invention may also be applied to other scenarios, for example, a scenario in which a terminal device sends uplink data to a network device through a scheduling request, which is not limited in the embodiment of the present invention.

Fig. 2 shows a data transmission and reception method 200 according to an embodiment of the present invention. The method 200 may be applied to the wireless communication system 100 shown in fig. 1, but the embodiment of the present invention is not limited thereto.

S210, a network device sends a first physical layer signaling to a first terminal device in a first time period, where the first physical layer signaling includes first resource pool indication information of the first terminal device, and the first resource pool indication information is used to indicate a first resource pool used by the first terminal device in a second time period, where the second time period is after the first time period.

Specifically, the first resource pool may be one of a plurality of resource pools configured for the first terminal device, and each of the plurality of resource pools includes at least one uplink resource.

In the embodiment of the present invention, the resource pool indication information of the terminal device may indicate a resource pool used by the terminal device within a certain time period. Specifically, the resource pool indication information in the first physical layer signaling sent in the first time period may indicate a resource pool used by the terminal device in a second time period, where the second time period is after the first time period. Optionally, the second time period may be separated from or distributed adjacent to the first time period, which is not limited in the embodiment of the present invention.

In this embodiment of the present invention, the Resource pool may correspond to a transmission Resource set, where the transmission Resource set may include at least one transmission Resource, where the transmission Resource may be a combination of at least one of time, frequency, code, and pilot Resource, for example, the Resource pool may include at least one Physical Resource Block (PRB), which is not limited in this embodiment of the present invention.

In the embodiment of the present invention, different resource pools may correspond to different sets of transmission resources, for example, different resource pools may include different time-frequency resources; alternatively, different resource pools may have different transmission resource granularities, for example, the smaller the resource granularity of a resource pool is, the lower the probability that a plurality of terminal devices using the resource pool collide with each other is, but the embodiment of the present invention is not limited thereto.

In the embodiment of the present invention, the terminal device may have multiple resource pools, that is, multiple available uplink resource pools. In a certain time period, the terminal device may transmit uplink data to the network device by using a transmission resource in one of the resource pools. Optionally, the resource pool used by the terminal device may be updated periodically, where in a specific update, the resource pool updated by the terminal device may be different from the resource pool used by the terminal device before the update, or may be the same as the resource pool used by the terminal device before the update, which is not limited in this embodiment of the present invention.

Optionally, the plurality of resource pools available for the terminal device may be specified by a protocol, for example, may correspond to the identification information of the terminal device, or may be allocated by the network device for the terminal device, which is not limited in this embodiment of the present invention.

As an alternative embodiment, before S210, the method 200 further includes: the network device sends a high-layer signaling to the first terminal device, wherein the high-layer signaling indicates at least one resource pool, and the plurality of resource pools include the at least one resource pool indicated by the high-layer signaling.

The at least one resource pool indicated by the higher layer signalling may be a subset of a plurality of resource pools of the first terminal device. That is, the plurality of resource pools available to the first terminal device may all be indicated by the higher layer signaling; alternatively, the higher layer signaling may indicate a portion of the plurality of resource pools for the first terminal device. At this time, another part of the resource pool of the first terminal device may be defined by a protocol and/or dynamically allocated by the network device through physical layer signaling, and the embodiment of the present invention is not limited thereto.

As another alternative embodiment, before S210, the method 200 further includes: the network device sends a second physical layer signaling to the first terminal device, wherein the second physical layer signaling indicates at least one resource pool, and the plurality of resource pools include the at least one resource pool indicated by the second physical layer signaling.

In this embodiment of the present invention, optionally, on the basis of at least one resource pool defined by a protocol and/or configured by the network device through a higher layer signaling, the network device may additionally allocate one or other number of resource pools to the first terminal device through a physical layer signaling, which is not limited in this embodiment of the present invention.

In the embodiment of the present invention, the initial resource pool of the terminal device may be defined by a protocol, or may be configured in advance by the network device, for example, by the above-mentioned higher layer signaling or other higher layer or physical layer signaling. As an optional embodiment, the higher layer signaling is further configured to indicate that a first resource pool of the at least one resource pool is an initial resource pool of the first terminal device. Wherein the higher layer signaling may explicitly or implicitly indicate the initial resource pool of the first terminal device. For example, a certain resource pool of the at least one resource pool indicated by the higher layer signaling may have a specific identifier, and at this time, the first terminal device may use the resource pool having the specific identifier as an initial resource pool. For another example, the higher layer signaling may carry number information of each resource pool in the at least one resource pool, and at this time, the first terminal device may use a resource pool with a lowest number in the at least one resource pool as an initial resource pool, but the embodiment of the present invention is not limited thereto.

In the embodiment of the present invention, the network device may determine, from a plurality of resource pools available to the first terminal device, a first resource pool used by the terminal device within the second time period. As an optional embodiment, the network device may determine, according to history information of each resource pool of at least one resource pool available to the first terminal device, a resource pool used by the first terminal device in the second time period. Optionally, the at least one resource pool may include a resource pool that is being used or has been used by the first terminal device, and optionally, the at least one resource pool may be multiple resource pools that are available to the first terminal device, which is not limited in this embodiment of the present invention.

Here, the historical information of the resource pool may include historical statistical information of the resource pool in one or more time periods, where the one or more time periods may include the first time period and one or more time periods before the first time period, or may not include the first time period, which is not limited in this embodiment of the present invention.

Optionally, the history information of the resource pool may include resource conflict history statistics information of the resource pool. At this time, the network device may determine the resource pool used by the terminal device in the second time period based on the resource collision statistical information of at least one resource pool in the last time period (e.g., in one or more time periods). The resource conflict history statistics of the resource pool may be used to indicate: the probability of resource collision among a plurality of terminal devices sharing the resource pool in one or more time periods. As an alternative example, if the network device detects multiple active terminal devices in a resource pool within a recent period of time, that is, the terminal devices have data to transmit, but the data demodulation and decoding of the terminal devices always fails, for example, the cyclic redundancy check of the data channel is always not passed, the network device may determine that the resource collision probability of the resource pool is relatively high. As another alternative example, if the network device finds that the ratio between the number of active terminal devices of a certain resource pool in a recent period of time and the total number of available resources of the resource pool is lower than a threshold value, for example 50%, the network device may determine that the resource collision probability of the resource pool is lower.

Optionally, the historical information of the resource pool may also include historical statistical information of uplink reception performance corresponding to the resource pool. The uplink receiving performance corresponding to the resource pool may be used to indicate a receiving performance of the network device for data sent by the terminal device using the resource pool, such as packet delay and/or block error rate, but the embodiment of the present invention is not limited thereto.

Optionally, the network device may count, in one or more time periods, uplink data transmission performance of the plurality of terminal devices using the resource pool in each time period, thereby obtaining historical statistical information of uplink reception performance corresponding to the resource pool. The network device may determine, based on the uplink reception performance corresponding to each resource pool in the at least one resource pool in the last period of time, a target resource pool of the terminal device in the second period of time.

Optionally, the history information of the resource pool may also include other information, which is not limited in this embodiment of the present invention.

Optionally, in S210, the network device may send the first physical layer signaling to N terminal devices including the first terminal device, where N is an integer greater than or equal to 1. The first physical layer signaling may include resource pool indication information of each of the N terminal devices, where the resource pool indication information of the first terminal device is first resource pool indication information.

Optionally, the network device may send the first physical layer signaling to each of the N terminal devices in a unicast manner. Alternatively, the network device may also send the first physical layer signaling to the N terminal devices in a multicast manner. At this time, optionally, the N terminal devices may be multiple terminal devices that use the same resource pool in the first time period, or the N terminal devices may be multiple terminal devices that use the same resource pool in the second time period, which is not limited to this embodiment of the present invention. Alternatively, the network device may also send the first physical layer signaling to the N terminal devices in a broadcast manner, but the embodiment of the present invention is not limited thereto.

S220, when receiving a first physical layer signaling sent by a network device, a first terminal device may determine, according to first resource pool indication information in the first physical layer signaling, a resource pool used by the first terminal device in a second time period.

In the embodiment of the invention, the terminal equipment can carry out blind detection. Alternatively, the terminal device may determine a time-frequency resource occupied by the first physical layer signaling, and detect the first physical layer signaling sent by the network device on the time-frequency resource. Optionally, the time-frequency resource occupied by the first physical layer signaling may be defined in a protocol, or may be configured by the network device. For example, the frequency domain resources occupied by the first physical layer signaling may be defined in a protocol, and the time domain resources may be configured by a network device, but the embodiment of the present invention is not limited thereto.

As an optional embodiment, before S210, the network device may send signaling dedicated to the first terminal device, where the signaling dedicated to the first terminal device may include information of time-frequency resources occupied by the first physical layer signaling. The information of the time-frequency resource may include information of a time resource and/or a frequency domain resource occupied by the first physical layer signaling. Optionally, the information of the time-frequency resource may include a time offset (time offset) and/or a transmission period, where the time offset may also be referred to as a subframe offset, and may be used to indicate a position of a symbol occupied by the first physical layer signaling in a subframe, but the embodiment of the present invention is not limited thereto. Optionally, the network device may periodically send physical layer signaling including resource pool indication information to the terminal device. At this time, the network device may configure the transmission period of the periodically transmitted physical layer signaling in the terminal-specific signaling, but the embodiment of the present invention is not limited thereto.

Optionally, the signaling dedicated to the first terminal device may be a higher layer signaling, but the embodiment of the present invention is not limited thereto.

Optionally, the network device may send, to each of the N terminal devices, terminal-specific signaling, where the terminal-specific signaling may be used to indicate a configuration of the first physical layer signaling, for example, at least one of a time-frequency resource, an RNTI, and a corresponding field of each terminal device in the first physical layer signaling, but the embodiment of the present invention is not limited thereto.

Optionally, when detecting a message sent by the network device, the terminal device may determine, according to the network identifier of the first physical layer signaling, that the currently detected message is specifically a physical layer signaling including the resource pool indication information. For example, the first physical layer signaling may include a network identification of the first physical layer signaling; alternatively, a Cyclic Redundancy Check (CRC) code of the first physical layer signaling may be scrambled with a Radio Network Temporary Identity (RNTI), wherein the N terminal devices may share the RNTI. Optionally, the RNTI shared by the N terminal devices may be protocol-defined, or may be preconfigured by the network device, but the embodiment of the present invention is not limited thereto.

As an alternative embodiment, the signaling dedicated to the first terminal device and sent by the network device to the first terminal device may include the RNTI, but the embodiment of the present invention is not limited thereto.

In this embodiment of the present invention, when receiving the first physical layer signaling, the first terminal device may determine first resource pool indication information of the first terminal device included in the first physical layer signaling, and determine, according to the first resource pool indication information, that a resource pool used in a second time period is the first resource pool.

As an optional embodiment, the first physical layer signaling may include N fields for carrying resource pool indication information of the N terminal devices, where the N fields are in one-to-one correspondence with the N terminal devices. For example, as shown in fig. 3, the first physical layer signaling may include a resource pool indication information field, where the resource pool indication information field includes N fields corresponding to N terminal devices one to one, and optionally, the resource pool indication information carried by each field may include number information of a resource pool used by the corresponding terminal device in the second time period, but the embodiment of the present invention is not limited thereto.

At this time, the first terminal device may determine a field corresponding to the first terminal device in the N fields of the first physical layer signaling, and determine the first resource pool according to resource pool indication information carried by the field corresponding to the first terminal device.

As another optional embodiment, the first physical layer signaling may include N +1 fields, where the N +1 fields include N fields corresponding to the N terminal devices one to one and 1 field for carrying resource pool information, where each field of the N fields carries resource pool update indication information of the corresponding terminal device, and the resource pool update indication information indicates whether to use the resource pool indicated by the resource pool information in the second time period.

In this embodiment of the present invention, the resource pool update indication information may indicate whether the terminal device uses the resource pool indicated by the resource pool information in the second time period. Optionally, the resource pool update indication information may occupy 1 bit, for example, 0 may represent that the resource pool indicated by the resource pool information is not used, and 1 may represent that the resource pool indicated by the resource pool information is used, but the embodiment of the present invention is not limited thereto. Optionally, if the terminal device is instructed to use the resource pool indicated by the resource pool information, the terminal device may use the resource pool indicated by the resource pool information in the second time period. Alternatively, if the terminal device is instructed not to use the resource pool indicated by the resource pool information, the terminal device may continue to use the resource pool used in the first time period for the second time period. Optionally, the resource pool indicated by the resource pool information may be the same as or different from the resource pool used by the terminal device in the first time period, which is not limited in this embodiment of the present invention.

Optionally, the number of the resource pools indicated by the resource pool information may be one or more. For example, the N terminal devices may use the same resource pool during the second time period. At this time, the resource pool information may indicate one resource pool. Optionally, the N terminal devices may use different resource pools in the second time period. At this time, optionally, the resource pool information may indicate a plurality of resource pools, but the embodiment of the present invention is not limited thereto.

Optionally, the resource pool update indication information may also be used to indicate whether the terminal device updates the used resource pool within the second time period. If the terminal equipment is instructed not to update the used resource pool, the terminal equipment can continue to use the resource pool used in the first time period in the second time period; optionally, if the terminal device is instructed to update the used resource pool, the terminal device may use the resource pool indicated by the resource pool information in the second time period, which is not limited in the embodiment of the present invention.

For example, as shown in fig. 4, the first physical layer signaling may include a resource pool update indication information field and a resource pool information field following the resource pool update indication information field, where the resource pool update indication information field includes N fields corresponding to N terminal devices one to one, each field carries resource pool update indication information for indicating whether the corresponding terminal device needs to update a resource pool used by the corresponding terminal device, and the resource pool information field includes 1 field for carrying resource pool information.

At this time, the first terminal device may determine a field corresponding to the first terminal device in the N fields of the first physical layer signaling, and determine the first resource pool according to resource pool update indication information carried by the field corresponding to the first terminal device. Specifically, if the resource pool update indication information indicates that the first terminal device uses the resource pool indicated by the resource pool information within the second time period, the first terminal device may determine the resource pool indicated by the resource pool information as the first resource pool. Optionally, if the resource pool update indication information indicates that the first terminal device does not use the resource pool indicated by the resource pool information in the second time period, the first terminal device may determine the resource pool used in the first time period as the first resource pool, but the embodiment of the present invention is not limited thereto.

In this embodiment of the present invention, a field corresponding to the first terminal device in the first physical layer signaling may be defined in a protocol. Or each field of the N fields of the first physical layer signaling may carry identification information of a corresponding terminal device, where the identification information of the terminal device may include a device identifier of the terminal device, a terminal identifier, or an identifier allocated by the network device to the terminal device, and the like, which is not limited in this embodiment of the present invention. At this time, the first terminal device may determine, according to the identification information of the first terminal device, a field in the first physical layer signaling corresponding to the first terminal device, but the embodiment of the present invention is not limited thereto.

Or, the first physical layer signaling further includes one or more fields for carrying identification information of each of the N terminal devices, where, in the first physical layer signaling, an order of the identification information of the N terminal devices in the one or more fields may be consistent with an order of the N fields corresponding to the N terminal devices one to one. At this time, the first terminal device may determine the location of its own identification information in the identification information of the N terminal devices, and determine a field corresponding to the first terminal device in the N fields according to the location, but the embodiment of the present invention is not limited thereto.

Alternatively, the network device may send the first terminal device-specific signaling to the first terminal device, where the first terminal device-specific signaling may include information of a field corresponding to the first terminal device in the first physical layer signaling. At this time, the first terminal device may determine, according to the signaling dedicated to the first terminal device, a field in the first physical layer signaling corresponding to the first terminal device, but the embodiment of the present invention is not limited thereto.

S230, the first terminal device determines the first uplink resource in the first resource pool.

Optionally, the first terminal device may randomly select the uplink resource from the first resource pool, or select the uplink resource according to a certain rule, which is not limited in the embodiment of the present invention.

S240, the first terminal device uses the first uplink resource to send data to the network device in the second time period.

Optionally, the transmission resources within the resource pool may contain at least the following features: time-frequency resource location, data demodulation reference signal, and transmit power, but the embodiments of the present invention are not limited thereto.

Therefore, in the data transmitting and receiving method provided in the embodiment of the present invention, a network device transmits a first physical layer signaling to a network device, where the first physical layer signaling includes first resource pool indication information of the first terminal device, where the first resource pool indication information is used to indicate a first resource pool used by the first terminal device in a second time period, and the first terminal device may determine, according to the first physical layer signaling transmitted by the network device, the first resource pool used by itself in the second time period, and transmit uplink data to the network device using a first uplink resource in the first resource pool in the second time period, which is beneficial to avoiding persistent occurrence of resource collision, reducing transmission delay, and improving resource utilization.

According to the data sending and receiving method provided by the embodiment of the invention, the network equipment can dynamically allocate the resource pool used by the terminal equipment, so that the problems of time delay increase and reliability reduction caused by system load increase and terminal resource conflict probability improvement are avoided. In addition, compared with reserving fixed transmission resources for the terminal device, the data sending and receiving method provided by the embodiment of the invention is beneficial to avoiding the problem of low utilization rate of system resources caused by reduced system load and surplus reserved resources.

It should be noted that the examples of fig. 3 to 4 are provided to help those skilled in the art better understand the embodiments of the present invention, and are not intended to limit the scope of the embodiments of the present invention. It will be apparent to those skilled in the art that various equivalent modifications or variations are possible in light of the examples given in figures 3 and 4, and such modifications or variations are also within the scope of the embodiments of the invention.

It should be understood that the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiment of the present invention.

The data transmission and reception method according to the embodiment of the present invention is described in detail above with reference to fig. 1 to 4, and the terminal device and the network device according to the embodiment of the present invention are described below with reference to fig. 5 to 8.

Fig. 5 shows a terminal device 300 provided in an embodiment of the present invention, including:

a receiving unit 310, configured to receive a first physical layer signaling sent by a network device in a first time period, where the first physical layer signaling includes first resource pool indication information of a first terminal device, and the first resource pool indication information is used to indicate a first resource pool used by the first terminal device in a second time period, where the first resource pool is one of multiple resource pools configured for the first terminal device, and each resource pool of the multiple resource pools includes at least one uplink resource;

a sending unit 320, configured to send data to the network device by using a first uplink resource in the second time period, where the first uplink resource is a resource in the first resource pool indicated by the first resource pool indication information.

Optionally, the terminal device 300 may further include: the processing unit 330 is configured to determine a first uplink resource in the first resource pool indicated by the first physical layer signaling received by the receiving unit 310.

It should be understood that the terminal device 300 herein is embodied in the form of functional units. In an optional example, as can be understood by those skilled in the art, the terminal device 300 may be specifically a first terminal device in the foregoing embodiment, and the terminal device 300 may be configured to execute each procedure and/or step corresponding to the first terminal device in the foregoing method embodiment, and details are not described here again to avoid repetition.

Fig. 6 shows a network device 400 according to another embodiment of the present invention, which includes:

a sending unit 410, configured to send a first physical layer signaling to a first terminal device in a first time period, where the first physical layer signaling includes first resource pool indication information of the first terminal device, and the first resource pool indication information is used to indicate a first resource pool used by the first terminal device in a second time period, where the first resource pool is one of multiple resource pools configured for the first terminal device, and each resource pool of the multiple resource pools includes at least one uplink resource;

a receiving unit 420, configured to receive, in the second time period, uplink data sent by the first terminal device by using a first uplink resource, where the first uplink resource is a resource in the first resource pool indicated by the first physical layer signaling sent by the sending unit 410.

It should be appreciated that the network device 400 herein is embodied in the form of functional units. In an optional example, it may be understood by those skilled in the art that the network device 400 may be specifically a network device in the foregoing embodiment, and the network device 400 may be configured to perform each procedure and/or step corresponding to the network device in the foregoing method embodiment, and in order to avoid repetition, details are not described here again.

It should also be appreciated that, in embodiments of the invention, the term "unit" may refer to an Application Specific Integrated Circuit (ASIC), an electronic Circuit, a processor (e.g., a shared, dedicated, or group processor) and memory that execute one or more software or firmware programs, a combinational logic Circuit, and/or other suitable components that support the described functionality.

Fig. 7 shows a terminal device 500 provided in an embodiment of the present invention, which includes: a processor 510 and a memory 520, wherein the memory 520 is configured to store instructions and the processor 510 is configured to execute the instructions stored by the memory 520, wherein execution of the instructions causes the processor 510 to:

receiving a first physical layer signaling sent by a network device in a first time period, where the first physical layer signaling includes first resource pool indication information of a first terminal device, and the first resource pool indication information is used to indicate a first resource pool used by the first terminal device in a second time period, where the first resource pool is one of multiple resource pools configured for the first terminal device, and each of the multiple resource pools includes at least one uplink resource;

and transmitting data to the network equipment by adopting a first uplink resource in the second time period, wherein the first uplink resource is a resource in the first resource pool indicated by the first resource pool indication information.

In an optional example, as can be understood by those skilled in the art, the terminal device 500 may be specifically a first terminal device in the foregoing embodiment, and the terminal device 500 may be configured to execute each procedure and/or step corresponding to the first terminal device in the foregoing method embodiment, and in order to avoid repetition, details are not described here again.

The memory 520 may be a component independent from the processor 510, or may be a storage component within the processor 510.

Fig. 8 shows a network device 600 according to another embodiment of the present invention, which includes: a processor 610 and a memory 620, wherein the memory 620 is configured to store instructions and the processor 610 is configured to execute the instructions stored by the memory 620, wherein execution of the instructions causes the processor 610 to:

sending a first physical layer signaling to a first terminal device in a first time period, where the first physical layer signaling includes first resource pool indication information of the first terminal device, and the first resource pool indication information is used to indicate a first resource pool used by the first terminal device in a second time period, where the first resource pool is one of multiple resource pools configured for the first terminal device, and each of the multiple resource pools includes at least one uplink resource;

and receiving uplink data sent by the first terminal device by using the first uplink resource in the first resource pool in the second time period.

In an optional example, it may be understood by those skilled in the art that the network device 600 may be specifically a network device in the foregoing embodiment, and the network device 600 may be configured to execute each procedure and/or step corresponding to the network device in the foregoing method embodiment, and in order to avoid repetition, details are not described here again.

The memory 620 may be a component independent from the processor 610, or may be a storage component within the processor 610.

It should be noted that the above-described method embodiments may be applied in or implemented by a processor. The processor may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The Processor may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.

It will be appreciated that the memory in embodiments of the invention may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of example, but not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic random access memory (DDR SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchronous link SDRAM (SLDRAM), and Direct Rambus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that, in this document, the length of the time period may be 0 or more, that is, the term "time period" may refer to a time period or a certain time, which is not limited by the embodiment of the present invention.

It should also be understood that the above description of the resource pool indication information may be applicable to each resource pool indication information sent by the network device, or may be only applicable to some resource pool indication information or resource pool indication information sent by the network device, for example, the first physical layer signaling sent by the network device, which is not limited in this embodiment of the present invention.

It should also be understood that, the above description of the embodiments of the present invention is made by taking data transmission between a network device and a terminal device as an example, the embodiments of the present invention may also be applied to communication between two terminal devices or two machines, and when applied to communication between two terminal devices or two machines, the above network device may also be replaced by a terminal device or a machine, and the terminal device may also be replaced by a machine.

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 several embodiments provided in the present application, it should be understood that the disclosed system, 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 place, or may be distributed on a plurality of 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.

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.

It should also be understood that in the above embodiments, all or part may be implemented by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the invention to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

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 data transmission method, comprising:

a first terminal device receives first physical layer signaling from a network device in a first time period, wherein the first physical layer signaling comprises first resource pool indication information of the first terminal device, and the first resource pool indication information is used for indicating a first resource pool used by the first terminal device in a second time period, wherein the first resource pool is one of a plurality of resource pools configured for the first terminal device, and each resource pool in the plurality of resource pools comprises at least one uplink resource;

the first terminal device sends data to the network device by using a first uplink resource in the second time period, where the first uplink resource is a resource in the first resource pool indicated by the first resource pool indication information;

before the first terminal device receives the first physical layer signaling, the method further comprises:

the first terminal device receives a high-layer signaling from the network device, the high-layer signaling indicates at least one resource pool, and the high-layer signaling further indicates that one resource pool of the at least one resource pool is used as an initial resource pool of the first terminal device, wherein the plurality of resource pools include the at least one resource pool indicated by the high-layer signaling.

2. The method of claim 1, wherein the first terminal device is one of N terminal devices, and the first physical layer signaling further includes resource pool indication information of N-1 terminal devices of the N terminal devices except the first terminal device, where N is a positive integer greater than 1;

before the first terminal device sends the data to the network device, the method further includes:

and the first terminal equipment determines the first resource pool according to the first resource pool indication information included in the first physical layer signaling.

3. The method of claim 2, wherein the first physical layer signaling comprises N fields for carrying resource pool indication information of the N terminal devices, and the N fields are in one-to-one correspondence with the N terminal devices;

the first terminal device determining the first resource pool includes:

and the first terminal equipment determines the first resource pool according to the first resource pool indication information carried by the field corresponding to the first terminal equipment in the N fields.

4. The method of claim 2,

the first physical layer signaling includes N +1 fields, N fields of the N +1 fields correspond to the N terminal devices one to one, where each field of the N fields carries resource pool update indication information of a corresponding terminal device, 1 field of the N +1 fields except the N fields carries resource pool information, and the resource pool update indication information indicates whether to use a resource pool indicated by the resource pool information in the second time period.

5. The method according to claim 4, wherein the first resource pool indication information includes the resource pool update indication information and the resource pool information carried by a field corresponding to the first terminal device;

the first terminal device determining the first resource pool includes:

and the first terminal equipment determines the first resource pool according to the resource pool information and resource pool update indication information carried by a field corresponding to the first terminal equipment, wherein the resource pool information indicates the first resource pool, and the resource pool update indication information carried by the field corresponding to the first terminal equipment indicates whether the first resource pool indicated by the resource pool information is used in the second time period.

6. The method of claim 2, wherein before the first terminal device receives the first physical layer signaling, further comprising:

the first terminal device receives a signaling special for the first terminal device from the network device, wherein the signaling special for the first terminal device includes a Radio Network Temporary Identifier (RNTI), the RNTI is shared by the N terminal devices, and a Cyclic Redundancy Check (CRC) field of the first physical layer signaling is descrambled by using the RNTI.

7. The method of claim 6, wherein the signaling specific to the first terminal device further comprises: and the information of the time-frequency resource occupied by the first physical layer signaling and/or the information of a field corresponding to the first terminal equipment in the first physical layer signaling.

8. The method of claim 7, wherein the information of the time-frequency resources occupied by the first physical layer signaling comprises: a time offset and/or a transmission period of the first physical layer signaling, wherein,

and the first terminal equipment determines the first time period according to the time offset and/or the sending period of the first physical layer signaling.

9. The method according to any of claims 1 to 8, wherein before the first terminal device receives the first physical layer signaling, the method further comprises:

the first terminal device receives second physical layer signaling from the network device, wherein the second physical layer signaling indicates at least one resource pool, and the plurality of resource pools include the at least one resource pool indicated by the second physical layer signaling.

10. A data receiving method, comprising:

a network device sends a first physical layer signaling to a first terminal device within a first time period, where the first physical layer signaling includes first resource pool indication information of the first terminal device, and the first resource pool indication information is used to indicate a first resource pool used by the first terminal device within a second time period, where the first resource pool is one of multiple resource pools configured for the first terminal device, and each resource pool of the multiple resource pools includes at least one uplink resource;

the network device receives uplink data sent by the first terminal device by using the first uplink resource in the first resource pool in the second time period;

before the network device sends the first physical layer signaling, the method further comprises:

the network device sends a high-level signaling to the first terminal device, the high-level signaling indicates at least one resource pool, the high-level signaling further indicates that one resource pool in the at least one resource pool is used as an initial resource pool of the first terminal device, wherein the plurality of resource pools include the at least one resource pool indicated by the high-level signaling.

11. The method of claim 10, wherein the first terminal device is one of N terminal devices, and the first physical layer signaling further includes resource pool indication information of N-1 terminal devices of the N terminal devices except the first terminal device, where N is a positive integer greater than 1;

the method further comprises the following steps:

and the network equipment sends the first physical layer signaling to each terminal equipment in the N-1 terminal equipments in the first time period.

12. The method of claim 11, wherein the first physical layer signaling comprises N fields for carrying resource pool indication information of the N terminal devices, and wherein the N fields are in one-to-one correspondence with the N terminal devices.

13. The method of claim 11, wherein the first physical layer signaling comprises N +1 fields, and N of the N +1 fields are in one-to-one correspondence with the N terminal devices, wherein each of the N fields carries resource pool update indication information of the corresponding terminal device, and 1 of the N +1 fields except the N fields carries resource pool information, and the resource pool update indication information indicates whether to use the resource pool indicated by the resource pool information in the second time period;

the first resource pool indication information includes the resource pool update indication information and the resource pool information carried by a field corresponding to the first terminal device.

14. The method of claim 11, wherein before the network device sends the first physical layer signaling to the first terminal device, the method further comprises:

the network equipment sends a signaling special for the first terminal equipment to the first terminal equipment, wherein the signaling special for the first terminal equipment comprises a Radio Network Temporary Identifier (RNTI), the RNTI is shared by the N terminal equipments, and a Cyclic Redundancy Check (CRC) field of the first physical layer signaling is scrambled by the RNTI.

15. The method of claim 14, wherein the signaling specific to the first terminal device further comprises: and the information of the time-frequency resource occupied by the first physical layer signaling and/or the information of a field corresponding to the first terminal equipment in the first physical layer signaling.

16. The method of claim 15, wherein the information of the time-frequency resources occupied by the first physical layer signaling comprises: a time offset and/or a transmission period of the first physical layer signaling.

17. The method according to any of claims 10 to 16, wherein before the network device sends the first physical layer signaling, the method further comprises:

the network device determines the first resource pool used by the first terminal device in the second time period according to the history information of each resource pool in at least one resource pool, wherein the history information of each resource pool comprises at least one of the following information: and the historical resource conflict statistical information of each resource pool and the historical statistical information of the uplink receiving performance corresponding to each resource pool.

18. The method according to any of claims 10 to 16, wherein before the network device sends the first physical layer signaling, the method further comprises:

and the network equipment sends second physical layer signaling to the first terminal equipment, wherein the second physical layer signaling is used for indicating at least one resource pool, and the plurality of resource pools comprise at least one resource pool indicated by the second physical layer signaling.

19. A terminal device, comprising:

a receiving unit, configured to receive a first physical layer signaling from a network device in a first time period, where the first physical layer signaling includes first resource pool indication information of a first terminal device, and the first resource pool indication information is used to indicate a first resource pool used by the first terminal device in a second time period, where the first resource pool is one of multiple resource pools configured for the first terminal device, and each of the multiple resource pools includes at least one uplink resource;

a sending unit, configured to send data to the network device by using a first uplink resource in the second time period, where the first uplink resource is a resource in the first resource pool indicated by the first resource pool indication information received by the receiving unit;

the receiving unit is further configured to: receiving higher layer signaling from the network device before receiving the first physical layer signaling, the higher layer signaling indicating at least one resource pool, the higher layer signaling further indicating that one of the at least one resource pool is an initial resource pool of the first terminal device, wherein the plurality of resource pools includes the at least one resource pool indicated by the higher layer signaling.

20. The terminal device of claim 19, wherein the first terminal device is one of N terminal devices, and the first physical layer signaling further includes resource pool indication information of N-1 terminal devices of the N terminal devices except the first terminal device, where N is a positive integer greater than 1;

the terminal device further includes:

a processing unit, configured to determine the first resource pool according to the first resource pool indication information included in the first physical layer signaling before the sending unit sends data to the network device.

21. The terminal device of claim 20, wherein the first physical layer signaling comprises N fields for carrying resource pool indication information of the N terminal devices, and the N fields are in one-to-one correspondence with the N terminal devices;

the processing unit is specifically configured to determine the first resource pool according to the first resource pool indication information carried by a field corresponding to the first terminal device in the N fields.

22. The terminal device of claim 20,

23. The terminal device according to claim 22, wherein the first resource pool indication information includes the resource pool update indication information and the resource pool information carried by a field corresponding to the first terminal device;

the processing unit is specifically configured to determine the first resource pool according to the resource pool information and resource pool update indication information carried by a field corresponding to the first terminal device, where the resource pool information indicates the first resource pool, and the resource pool update indication information carried by the field corresponding to the first terminal device indicates whether to use the first resource pool indicated by the resource pool information in the second time period.

24. The terminal device of claim 20, wherein the receiving unit is further configured to: before receiving the first physical layer signaling, receiving a signaling dedicated to the first terminal device from the network device, where the signaling dedicated to the first terminal device includes a Radio Network Temporary Identifier (RNTI) that is common to the N terminal devices, and a Cyclic Redundancy Check (CRC) field of the first physical layer signaling is descrambled using the RNTI.

25. The terminal device of claim 24, wherein the first terminal device-specific signaling further comprises: and the information of the time-frequency resource occupied by the first physical layer signaling and/or the information of a field corresponding to the first terminal equipment in the first physical layer signaling.

26. The terminal device of claim 25, wherein the information of the time-frequency resources occupied by the first physical layer signaling includes: a time offset and/or a transmission period of the first physical layer signaling, wherein,

the processing unit is further to: before the receiving unit receives the first physical layer signaling, determining the first time period according to the time offset and/or the sending period of the first physical layer signaling.

27. The terminal device according to any of claims 19 to 26, wherein the receiving unit is further configured to: receiving second physical layer signaling from the network device prior to receiving the first physical layer signaling, wherein the second physical layer signaling indicates at least one resource pool, wherein the plurality of resource pools includes the at least one resource pool indicated by the second physical layer signaling.

28. A network device, comprising:

a sending unit, configured to send a first physical layer signaling to a first terminal device in a first time period, where the first physical layer signaling includes first resource pool indication information of the first terminal device, and the first resource pool indication information is used to indicate a first resource pool used by the first terminal device in a second time period, where the first resource pool is one of multiple resource pools configured for the first terminal device, and each resource pool of the multiple resource pools includes at least one uplink resource;

a receiving unit, configured to receive, in the second time period, uplink data sent by the first terminal device by using a first uplink resource, where the first uplink resource is a resource in the first resource pool indicated by first resource pool indication information sent by the sending unit;

the sending unit is further configured to: before sending the first physical layer signaling, sending a high layer signaling to the first terminal device, where the high layer signaling indicates at least one resource pool, and the high layer signaling further indicates to use one resource pool of the at least one resource pool as an initial resource pool of the first terminal device, where the multiple resource pools include the at least one resource pool indicated by the high layer signaling.

29. The network device according to claim 28, wherein the first terminal device is one of N terminal devices, the first physical layer signaling further includes resource pool indication information of N-1 terminal devices of the N terminal devices except the first terminal device, and N is a positive integer greater than 1;

the sending unit is further configured to send the first physical layer signaling to each of the N-1 terminal devices within the first time period.

30. The network device of claim 29, wherein the first physical layer signaling comprises N fields for carrying resource pool indication information of the N terminal devices, and wherein the N fields are in one-to-one correspondence with the N terminal devices.

31. The network device of claim 29, wherein the first physical layer signaling comprises N +1 fields, and N of the N +1 fields are in one-to-one correspondence with the N terminal devices, wherein each of the N fields carries resource pool update indication information of the corresponding terminal device, and 1 of the N +1 fields other than the N fields carries resource pool information, and the resource pool update indication information indicates whether to use the resource pool indicated by the resource pool information in the second time period;

32. The network device of claim 28, wherein the sending unit is further configured to: before sending a first physical layer signaling to a first terminal device, sending a signaling dedicated to the first terminal device, wherein the signaling dedicated to the first terminal device includes a Radio Network Temporary Identifier (RNTI), the RNTI is shared by the N terminal devices, and a Cyclic Redundancy Check (CRC) field of the first physical layer signaling is scrambled by the RNTI.

33. The network device of claim 32, wherein the signaling specific to the first terminal device further comprises: and the information of the time-frequency resource occupied by the first physical layer signaling and/or the information of a field corresponding to the first terminal equipment in the first physical layer signaling.

34. The network device of claim 33, wherein the information of the time-frequency resources occupied by the first physical layer signaling comprises: a time offset and/or a transmission period of the first physical layer signaling.

35. The network device of any one of claims 28 to 34, further comprising:

a processing unit, configured to determine, before the sending unit sends the first physical layer signaling, the first resource pool used by the first terminal device in the second time period according to history information of each resource pool in at least one resource pool, where the history information of each resource pool includes at least one of the following information: the historical resource conflict statistical information of each resource pool and the historical statistical information of the uplink receiving performance of the network equipment for the plurality of terminal equipment in each resource pool.

36. The network device according to any of claims 28 to 34, wherein the sending unit is further configured to: before sending the first physical layer signaling, sending second physical layer signaling to the first terminal device, where the second physical layer signaling is used to indicate at least one resource pool, and the multiple resource pools include the at least one resource pool indicated by the second physical layer signaling.

37. A terminal device, comprising:

a memory to store instructions;

a processor for executing the memory-stored instructions, which when executed by the processor, cause the processor to perform the method of any of claims 1 to 9.

38. A network device, comprising:

a memory to store instructions;

a processor for executing the memory-stored instructions, which when executed by the processor, cause the processor to perform the method of any of claims 10 to 18.

39. A computer-readable storage medium having stored therein instructions which, when executed on a computer, cause the computer to perform the method of any one of claims 1 to 9 or to perform the method of any one of claims 10 to 18.