CN109906646B

CN109906646B - Information transmission method, base station and terminal equipment

Info

Publication number: CN109906646B
Application number: CN201680090044.5A
Authority: CN
Inventors: 张彦; 吴从海; 周平
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2016-11-30
Filing date: 2016-11-30
Publication date: 2021-02-12
Anticipated expiration: 2036-11-30
Also published as: WO2018098762A9; WO2018098762A1; CN109906646A

Abstract

The embodiment of the invention provides an information transmission method, a base station and terminal equipment. The method provided by the invention comprises the steps that source terminal equipment sends first uplink information comprising data volume to be transmitted in a second TTI to a base station in a first TTI, receives uplink resource information corresponding to the second TTI sent by the base station, and then sends second uplink information to the base station in the second TTI according to the uplink resource corresponding to the second TTI. The embodiment of the invention can shorten the transmission time delay.

Description

Information transmission method, base station and terminal equipment

Technical Field

The present invention relates to communications technologies, and in particular, to an information transmission method, a base station, and a terminal device.

Background

Generation 5 (5)^thGeneration, 5G for short) communication systems are dedicated to support higher system performance, and the types of services are also diversified. In which, for the time delay sensitive services such as car networking, robots, etc., very strict requirements are imposed on the time delay and reliability of end-to-end transmission. The delay-sensitive service may be referred to as an Ultra-Reliable and Low Latency Communications (URLLC) service.

In a current Long Term Evolution (LTE) communication system, in order to avoid resource waste, a base station usually does not allocate uplink resources to a terminal device without online data transmission. If the source terminal equipment is towards the target terminal each timeBefore the device transmits data, it needs to send scheduling request to the base station (

Request, SBR for short), so that the base station allocates uplink resources of a Buffer Status Report (BSR for short) to the terminal device. The source terminal device sends a BSR to the base station according to the uplink resource of the BSR, so that the base station determines the amount of data to be transmitted by the source terminal device according to the BSR, and then allocates the uplink resource of uplink data to the source terminal device according to the amount of data to be transmitted. After determining the uplink resource of the uplink data, the source terminal device may transmit the uplink data through a data channel according To the uplink resource of the uplink data, and then the base station transmits the uplink data To the target terminal device, thereby implementing Point-To-Point (Point To Point) data transmission between the source terminal device and the target terminal device.

However, the source terminal device needs To request the base station for the uplink resource before transmitting data To the target terminal device each time, and the SR and the BSR for requesting the uplink resource are both sent through the control channel, which makes the time delay of Point-To-Point (Point To Point) data transmission between the source terminal device and the target terminal device larger.

Disclosure of Invention

The embodiment of the invention provides an information transmission method, a base station and terminal equipment, aiming at shortening transmission delay.

In a first aspect, an embodiment of the present invention provides an information transmission method, including:

the source terminal equipment sends first uplink information including the data volume to be transmitted in a second Transmission Time Interval (TTI) and transmission data of the first TTI to a base station in a first TTI;

the source terminal equipment receives uplink resource information corresponding to the second TTI sent by the base station; the uplink resource corresponding to the second TTI is the uplink resource allocated to the source terminal equipment by the base station according to the data volume to be transmitted in the second TTI;

the source terminal equipment sends second uplink information to the base station in the second TTI according to the uplink resource corresponding to the second TTI; the second uplink information includes: data for transmission of the second TTI.

The information transmission method can enable the base station to obtain the data volume to be transmitted in the second TTI in time and then perform uplink resource allocation, effectively reduce uplink resource allocation time delay between the source terminal device and the base station, reduce data transmission time delay between the source terminal device and the base station, then improve the forwarding efficiency of the base station on data between the source terminal device and the target terminal device, and reduce P2P data transmission time delay between the source terminal device and the target terminal device.

Meanwhile, in the method, the data volume to be transmitted in the second TTI and the transmission data of the first TTI are carried in the first uplink information sent to the base station in the first TTI, channel-following sending of the data volume to be transmitted and the current transmission data volume is realized, the data volume to be transmitted in the second TTI does not need to be additionally transmitted through a Control channel, the coding complexity in the transmission process of parameters such as the data volume to be transmitted is simplified, the construction that a Medium Access Control Element (Medium Access Control Element) of a BSR carries the parameters such as the data volume to be transmitted and the complicated message analysis of a receiving end is avoided, and the efficiency of the base station for analyzing and acquiring the data volume to be transmitted in the second TTI is improved.

In addition, in the method, under the condition that the first uplink information including the transmission data of the first TTI is sent to the base station, the data volume to be transmitted in the second TTI is carried in the first uplink information, so that the channel-associated sending of the data volume to be transmitted and the current transmission data volume is realized, and the utilization rate of frequency spectrum resources is also improved.

Optionally, the first uplink information further includes: identification of the target terminal equipment, and the size of a Transport Block (TB) of the first TTI;

the identification of the target terminal device is used for enabling the base station to determine the target terminal device;

the TB size of the first TTI is used to enable the base station to allocate the downlink resource corresponding to the first TTI to the target terminal device, and to send the transmission data of the first TTI to the target terminal device in the first TTI according to the downlink resource corresponding to the first TTI.

The first uplink information comprises the identifier of the target equipment, so that the base station can know the target terminal equipment in advance without additionally indicating by the source terminal equipment, and the data transmission delay between the source terminal equipment and the target terminal equipment is effectively reduced.

Optionally, the identifier of the destination terminal device, the amount of data to be transmitted in the second TTI, and the size of the TB of the first TTI are located at a preset time-frequency position in a first symbol in the time-frequency resource corresponding to the first uplink information.

In order to enable the base station to detect the identifier of the destination terminal device, the amount of data to be transmitted in the second TTI, and the size of the TB in the first TTI in the first uplink information as early as possible, the identifier of the destination terminal device, the amount of data to be transmitted in the second TTI, and the size of the TB in the first TTI may be located at a preset time-frequency position in a first symbol in the uplink resource corresponding to the first TTI.

Optionally, the time-frequency resource corresponding to the first uplink information is an uplink resource allocated to the source terminal device by the base station according to the data amount to be transmitted in the first TTI in the uplink information sent by the previous TTI of the first TTI;

alternatively, the first and second electrodes may be,

the time-frequency resource corresponding to the first uplink information is an uplink resource allocated to the source terminal device by the base station according to the data volume to be transmitted in the buffer status report BSR sent by the source terminal device.

Optionally, the receiving, by the source terminal device, the uplink resource information corresponding to the second TTI sent by the base station may include:

and the source terminal equipment receives downlink control information DCI which is sent by the base station and comprises the uplink resource information corresponding to the second TTI.

In a second aspect, an embodiment of the present invention provides an information transmission method, including:

a base station receives first uplink information sent by source terminal equipment in a first Transmission Time Interval (TTI); the first uplink information includes: the data volume to be transmitted in the second TTI and the transmission data of the first TTI;

the base station allocates uplink resources corresponding to the second TTI to the source terminal equipment according to the data volume to be transmitted in the second TTI;

the base station sends uplink resource information corresponding to the second TTI to the source terminal equipment;

the base station receives second uplink information sent by the source terminal device in the second TTI according to the uplink resource corresponding to the second TTI; the second uplink information includes: data for transmission of the second TTI.

before the above-mentioned base station receives the second uplink information sent by the source terminal device in the second TTI according to the uplink resource corresponding to the second TTI, the method may further include:

the base station determines the target terminal equipment according to the identification of the target terminal equipment, and allocates downlink resources corresponding to the first TTI to the target terminal equipment according to the TB size of the first TTI;

and the base station sends the transmission data of the first TTI to the target terminal equipment in the first TTI according to the downlink resource corresponding to the first TTI.

Optionally, before the base station sends the transmission data in the first TTI to the target terminal device in the first TTI according to the downlink resource corresponding to the first TTI, the method further includes:

the base station sends downlink resource information corresponding to the first TTI to the target terminal equipment; the downlink resource information corresponding to the first TTI is used to enable the target terminal device to determine the downlink resource corresponding to the first TTI, and receive the transmission data of the first TTI, which is sent by the base station, in the first TTI according to the downlink resource corresponding to the first TTI.

In order to enable the target terminal device to timely acquire the resource position of the downlink information sent by the base station so as to accurately receive the transmission data of the first TTI sent by the base station, the base station also sends the downlink resource information corresponding to the first TTI to the target terminal device.

Optionally, the identifier of the destination terminal device, the amount of data to be transmitted in the second TTI, and the size of the TB in the first TTI are located at a preset time-frequency position in the first symbol in the uplink resource corresponding to the first TTI.

Optionally, before the base station receives the first uplink information sent by the source terminal device in the first TTI, the method may further include:

the base station allocates uplink resources corresponding to the first TTI for the source terminal equipment;

the base station sends uplink resource information corresponding to the first TTI to the source terminal equipment; the uplink resource information corresponding to the first TTI is used to enable the source terminal device to determine the uplink resource corresponding to the first TTI, and to use the uplink resource corresponding to the first TTI.

Optionally, the allocating, by the base station, the uplink resource corresponding to the first TTI for the source terminal device includes:

the base station allocates uplink resources corresponding to the first TTI to the source terminal equipment according to the data volume to be transmitted in the first TTI in the uplink information sent by the previous TTI of the first TTI; alternatively, the first and second electrodes may be,

and the base station allocates uplink resources corresponding to the first TTI to the source terminal equipment according to the data volume to be transmitted in the buffer status report BSR sent by the source terminal equipment.

Optionally, the sending, by the base station, the uplink resource information corresponding to the second TTI to the source terminal device includes:

the base station sends downlink control information DCI to the source terminal equipment; the DCI includes uplink resource information corresponding to the second TTI.

In a third aspect, an embodiment of the present invention provides an information transmission apparatus, including:

a sending module, configured to send, to a base station in a first transmission time interval TTI, first uplink information including a data amount to be transmitted in a second TTI and transmission data of the first TTI;

a receiving module, configured to receive uplink resource information corresponding to the second TTI sent by the base station; the uplink resource corresponding to the second TTI is the uplink resource allocated to the source terminal equipment by the base station according to the data volume to be transmitted in the second TTI;

the sending module is further configured to send second uplink information to the base station in the second TTI according to the uplink resource corresponding to the second TTI; the second uplink information includes: data for transmission of the second TTI.

alternatively, the first and second electrodes may be,

Optionally, the receiving module is specifically configured to receive downlink control information DCI including the uplink resource information corresponding to the second TTI sent by the base station.

In a fourth aspect, an embodiment of the present invention provides an information transmission apparatus, including:

a receiving module, configured to receive first uplink information sent by a source terminal device in a first transmission time interval TTI; the first uplink information includes: the data volume to be transmitted in the second TTI and the transmission data of the first TTI;

a processing module, configured to allocate, to the source terminal device, an uplink resource corresponding to the second TTI according to the amount of data to be transmitted in the second TTI;

a sending module, configured to send uplink resource information corresponding to the second TTI to the source terminal device;

the receiving module is further configured to receive second uplink information sent by the source terminal device in the second TTI according to the uplink resource corresponding to the second TTI; the second uplink information includes: data for transmission of the second TTI.

the processing module is further configured to determine the target terminal device according to the identifier of the target terminal device, and allocate downlink resources corresponding to the first TTI to the target terminal device according to the TB size of the first TTI;

the sending module is further configured to send the transmission data of the first TTI to the target terminal device in the first TTI according to the downlink resource corresponding to the first TTI.

Optionally, the sending module is further configured to send downlink resource information corresponding to the first TTI to the target terminal device; the downlink resource information corresponding to the first TTI is used to enable the target terminal device to determine the downlink resource corresponding to the first TTI, and receive the transmission data of the first TTI, which is sent by the base station, in the first TTI according to the downlink resource corresponding to the first TTI.

Optionally, the processing module is further configured to allocate an uplink resource corresponding to the first TTI to the source terminal device;

a sending module, configured to send uplink resource information corresponding to the first TTI to the source terminal device; the uplink resource information corresponding to the first TTI is used to enable the source terminal device to determine the uplink resource corresponding to the first TTI, and to use the uplink resource corresponding to the first TTI.

Optionally, the processing module is specifically configured to allocate, according to the amount of data to be transmitted in the first TTI in the uplink information sent by a previous TTI of the first TTI, an uplink resource corresponding to the first TTI to the source terminal device; or, allocating the uplink resource corresponding to the first TTI to the source terminal device according to the amount of data to be transmitted in the BSR sent by the source terminal device.

Optionally, the sending module is specifically configured to send downlink control information DCI to the source terminal device; the DCI includes uplink resource information corresponding to the second TTI.

In a fifth aspect, an embodiment of the present invention may further provide a terminal device, including: a transmitter and a receiver;

the transmitter is used for transmitting first uplink information to the base station in a first transmission time interval TTI; the first uplink information includes: the data volume to be transmitted in the second TTI and the transmission data of the first TTI;

a receiver, configured to receive uplink resource information corresponding to the second TTI sent by the base station; the uplink resource corresponding to the second TTI is the uplink resource allocated to the source terminal equipment by the base station according to the data volume to be transmitted in the second TTI;

the transmitter is further configured to transmit second uplink information to the base station in the second TTI according to the uplink resource corresponding to the second TTI; the second uplink information includes: data for transmission of the second TTI.

alternatively, the first and second electrodes may be,

Optionally, the receiver is specifically configured to receive downlink control information DCI sent by the base station; the DCI includes uplink resource information corresponding to the second TTI.

In a sixth aspect, an embodiment of the present invention may further provide a base station, including: a receiver, a processor, and a transmitter; the receiver and the transmitter are respectively connected with the processor;

the receiver is used for receiving first uplink information sent by source terminal equipment in a first Transmission Time Interval (TTI); the first uplink information includes: the data volume to be transmitted in the second TTI and the transmission data of the first TTI;

the processor is used for allocating uplink resources corresponding to the second TTI to the source terminal equipment according to the data volume to be transmitted in the second TTI;

the transmitter is configured to transmit uplink resource information corresponding to the second TTI to the source terminal device;

the receiver is further configured to receive second uplink information sent by the source terminal device in the second TTI according to the uplink resource corresponding to the second TTI; the second uplink information includes: data for transmission of the second TTI.

the processor is further configured to determine the target terminal device according to the identifier of the target terminal device, and allocate downlink resources corresponding to the first TTI to the target terminal device according to the TB size of the first TTI;

and the transmitter is further configured to transmit the transmission data of the first TTI to the target terminal device in the first TTI according to the downlink resource corresponding to the first TTI.

Optionally, the transmitter is further configured to transmit downlink resource information corresponding to the first TTI to the target terminal device; the downlink resource information corresponding to the first TTI is used to enable the target terminal device to determine the downlink resource corresponding to the first TTI, and receive the transmission data of the first TTI, which is sent by the base station, in the first TTI according to the downlink resource corresponding to the first TTI.

Optionally, the identifier of the terminal device, the data amount to be transmitted in the second TTI, and the size of the TB in the first TTI are located at a preset time-frequency position in the first symbol in the uplink resource corresponding to the first TTI.

Optionally, the processor is further configured to allocate an uplink resource corresponding to the first TTI to the source terminal device;

the transmitter is further configured to transmit uplink resource information corresponding to the first TTI to the source terminal device; the uplink resource information corresponding to the first TTI is used to enable the source terminal device to determine the uplink resource corresponding to the first TTI, and to use the uplink resource corresponding to the first TTI.

Optionally, the processor is specifically configured to allocate, according to the amount of data to be transmitted in the first TTI in the uplink information sent by a previous TTI of the first TTI, an uplink resource corresponding to the first TTI to the source terminal device; or, allocating the uplink resource corresponding to the first TTI to the source terminal device according to the amount of data to be transmitted in the BSR sent by the source terminal device.

Optionally, the transmitter is specifically configured to send downlink control information DCI to the source terminal device; the DCI includes uplink resource information corresponding to the second TTI.

In a seventh aspect, an embodiment of the present invention further provides a computer program product, where the computer program product includes a program code for executing any information transmission method provided in the first aspect of the embodiment of the present invention.

In an eighth aspect, an embodiment of the present invention further provides a computer program product, where the computer program product includes a program code for executing any information transmission method provided in the second aspect of the embodiment of the present invention.

In a ninth aspect, an embodiment of the present invention further provides a storage medium, where the storage medium is used to store a computer program product, where the computer program product includes: the program code may include a program code for executing any information transmission method provided in the first aspect of the embodiments of the present invention.

In a tenth aspect, an embodiment of the present invention further provides a storage medium for storing a computer program product, where the computer program product includes: the program code may include a program code for executing any of the information transmission methods provided by the second aspect of the embodiments of the present invention.

In the information transmission method, the base station and the terminal device provided in the embodiment of the present invention, when the source terminal device sends the first uplink information including the transmission data of the first TTI to the base station in the first TTI, the data volume to be transmitted in the second TTI is also carried in the first uplink information, so that the base station can obtain the transmission data of the first TTI sent by the source terminal device and simultaneously obtain the data volume to be transmitted in the second TTI, so that the base station can allocate the uplink resource of the second TTI to the source terminal device according to the data volume to be transmitted in the second TTI, and send the uplink resource information corresponding to the second TTI to the source terminal device, so that the source terminal device sends the second uplink information including the transmission data of the second TTI to the base station in the second TTI according to the uplink resource corresponding to the second TTI. According to the information transmission method, the source terminal equipment does not need to request uplink resources from the base station through a control channel before sending data to the base station in each TTI, and the data volume to be transmitted of the second TTI is sent to the base station through the uplink information, so that the base station can timely acquire the data volume to be transmitted of the second TTI and then perform uplink resource allocation, uplink resource allocation delay between the source terminal equipment and the base station is effectively reduced, data transmission delay between the source terminal equipment and the base station is reduced, then the forwarding efficiency of the base station on the data between the source terminal equipment and the target terminal equipment is improved, and P2P data transmission delay between the source terminal equipment and the target terminal equipment is reduced.

Drawings

Fig. 1 is a schematic structural diagram of a network system to which information transmission methods according to embodiments of the present invention are applicable;

fig. 2 is a flowchart of an information transmission method according to an embodiment of the present invention;

fig. 3 is a flowchart of an information transmission method according to a second embodiment of the present invention;

fig. 4 is a schematic structural diagram of a radio frame in which first uplink information is located according to a second embodiment of the present invention;

fig. 5 is a schematic format diagram of an identifier of a destination terminal device in first uplink information, an amount of data to be transmitted in the second TTI, and a TB size of the first TTI according to a second embodiment of the present invention;

fig. 6 is a flowchart of another information transmission method according to a second embodiment of the present invention;

fig. 7 is a flowchart of an information transmission apparatus according to a third embodiment of the present invention;

fig. 8 is a flowchart of an information transmission apparatus according to a fourth embodiment of the present invention;

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

fig. 10 is a schematic structural diagram of a computer program product according to a fifth embodiment of the present invention;

fig. 11 is a schematic structural diagram of a storage medium according to a fifth embodiment of the present invention;

fig. 12 is a schematic structural diagram of a base station according to a sixth embodiment of the present invention;

fig. 13 is a schematic structural diagram of a computer program product according to a sixth embodiment of the present invention;

fig. 14 is a schematic structural diagram of a storage medium according to a sixth embodiment of the present invention.

Detailed Description

The information transmission method, apparatus, terminal device and base station provided in the following embodiments of the present invention may be applied to an LTE communication system, a 5G communication system and a more advanced evolution communication system based on the LTE communication system, so as to support a plurality of different application scenarios. Fig. 1 is a schematic structural diagram of a network system to which each information transmission method provided in the embodiment of the present invention is applied. As shown in fig. 1, the access network in the network system may include at least one base station, and the core network may include at least one core network device. The core network device may establish a connection with each base station through S1, and a connection between neighboring base stations may be established through X2. The terminal equipment can be directly connected with the core network equipment through one base station, and can also be connected with the core network through a plurality of base stations in sequence. The core network device may include: a Mobility Management Entity (MME), a Serving GateWay (SGW), and/or the like. The base station, as an access network device in the network system, may be responsible for maintaining and maintaining a wireless link with the terminal device, and simultaneously responsible for protocol conversion between wireless link data, such as physical layer data transmitted over the air interface, and Internet Protocol (IP) data, such as upper layer service data. The base station is also responsible for radio resource management with the terminal device, such as establishment and release of a radio link with the terminal device, scheduling and allocation of radio resources, and the like. Meanwhile, the base station is also responsible for part of mobility management functions, including configuring the terminal device so that the terminal device performs measurement of a physical channel, evaluating the quality of a wireless link with the terminal device, deciding switching of the terminal device among different cells, and the like. One terminal device in the network system can establish connection with another terminal device through the base station to realize point-to-point data transmission.

The terminal device related to each embodiment of the present invention described below may be a terminal of an LTE communication technology, a 5G communication technology, or a subsequent more advanced communication technology; each base station may be a base station device of LTE communication technology, 5G communication technology, or a later more advanced communication technology.

The terminal device may be a wireless terminal or a wired terminal. A wireless terminal may refer to a device that provides voice and/or data connectivity to a user, a handheld device having wireless connection capability, or other processing device connected to a wireless modem. A wireless terminal may communicate with one or more core networks via a Radio Access Network (RAN). The wireless terminals may be mobile terminals such as mobile telephones (or "cellular" telephones) and computers having mobile terminals, such as portable, pocket, hand-held, computer-included, or vehicle-mounted mobile devices, that exchange language and/or data with a radio access network. For example, devices such as Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs) are used. A wireless Terminal may also be referred to as a Subscriber Unit (Subscriber Unit), a Subscriber Station (Subscriber Station), a Mobile Station (Mobile), a Remote Station (Remote Station), an Access Point (Access Point), a Remote Terminal (Remote Terminal), an Access Terminal (Access Terminal), a User Terminal (User Terminal), a User Agent (User Agent), a User Device (User Device), or a User Equipment (User Equipment).

The base station is also called an Access Point (AP). The base station described in this application is a form of radio station, which refers to a radio transceiver station for information transfer between a mobile communication switching center and a mobile phone terminal in a certain radio coverage area; or may refer to a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminals. The base station may be configured to interconvert the received air frame with an Internet Protocol (IP) packet as a router between the wireless terminal and the rest of the access network, where the rest of the access network may include an Internet Protocol (IP) network. The base station may also coordinate management of attributes for the air interface. For example, the Base Station may be any one of a Base Transceiver Station (BTS), a Base Station (Node Base, NodeB), an evolved Node B (eNB), and the like, and the present application is not limited thereto.

In the information Transmission method provided in each of the following embodiments of the present invention, when a source terminal device transmits first uplink information including Transmission data of a first Transmission Time Interval (TTI) to a base station in the TTI, the data volume to be transmitted in the second TTI is also carried in the first uplink information, so that the base station can further obtain the transmission data of the first TTI sent by the source terminal equipment under the condition of receiving the first uplink information, and can also allocate the uplink resource of the source terminal equipment in the second TTI for the source terminal equipment according to the data volume to be transmitted in the second TTI, and sending the uplink resource information corresponding to the second TTI to the source terminal device, so that the source terminal device sends second uplink information including transmission data of the second TTI in the second TTI according to the uplink resource corresponding to the second TTI. In each information transmission method of the embodiment of the present invention, before the source terminal device sends data to the base station in each TTI, it is not necessary to request uplink resources from the base station through a control channel, so that the data transmission delay between the source terminal device and the base station is effectively reduced, the forwarding efficiency of the base station for data between the source terminal device and the target terminal device is improved, and the P2P data transmission delay between the source terminal device and the target terminal device is reduced.

The following embodiments of the present invention illustrate the information transmission method by way of a plurality of examples. It should be noted that, in all embodiments of the present invention, unless otherwise specified, the sequence of each step in each embodiment is not limited, and the interdependence relationship between each step is not limited.

The embodiment of the invention provides an information transmission method. Fig. 2 is a flowchart of an information transmission method according to an embodiment of the present invention. As shown in fig. 2, the method may include:

s201, a source terminal device sends first uplink information to a base station in a first TTI; the first uplink information includes: the transmission data of the first TTI and the data volume to be transmitted in the second TTI.

Specifically, the source terminal device may send the first uplink information to the base station through a Physical Uplink Shared Channel (PUSCH) in the first TTI. The first TTI may be any subframe in any radio frame transmitted by the source terminal device to the base station. For example, the one radio frame includes: subframe 0, subframe 1 … …, 10 subframes of subframe 9. The first TTI may be any subframe between subframe 0 and subframe 9.

The transmission data of the first TTI may be uplink traffic data that is sent by the source terminal to the base station in the first TTI. The first uplink information includes transmission data of the first TTI, and thus, the first uplink information may also be referred to as uplink information of the first TTI.

S202, the base station allocates uplink resources corresponding to the second TTI to the source terminal equipment according to the data volume to be transmitted in the second TTI.

The base station may allocate uplink resources to other terminal devices according to the amount of data to be transmitted in the second TTI, and allocate, from the total time-frequency resources corresponding to the base station, time-frequency resources, which are sufficient for transmitting uplink information of the amount of data transmitted in the second TTI, to the source terminal device as the uplink resources corresponding to the second TTI. That is to say, the uplink resource corresponding to the second TTI may be a time-frequency resource allocated by the base station for the source terminal device to transmit uplink information in the second TTI.

It should be noted that the base station may also allocate, according to the amount of data to be transmitted in the second TTI, the uplink resource corresponding to the second TTI to the source terminal device in other manners, which is described above only for example and is not described herein again.

S203, the base station sends the uplink resource information corresponding to the second TTI to the source terminal device.

The uplink Resource information corresponding to the second TTI may be at least one of a Physical Resource Block (PRB) identifier of the uplink Resource corresponding to the second TTI, a Resource Block (RB) identifier of the uplink Resource corresponding to the second TTI, and a symbol identifier of the uplink Resource corresponding to the second TTI.

And the base station can send the uplink resource information corresponding to the second TTI to the source terminal equipment through a downlink control channel. The Downlink Control Channel may be, for example, a Physical Downlink Control Channel (PDCCH).

S204, the source terminal equipment sends second uplink information to the base station in the second TTI according to the uplink resource corresponding to the second TTI; the second uplink information includes: data for transmission of the second TTI.

After receiving the uplink resource information corresponding to the second TTI, the source terminal device may determine the uplink resource corresponding to the second TTI according to the uplink resource information corresponding to the second TTI, and send, to the base station, second uplink information including transmission data of the second TTI in the second TTI according to the uplink resource corresponding to the second TTI. The transmission data of the second TTI may be uplink traffic data that is sent by the source terminal to the base station in the second TTI.

In the information transmission method provided in each of the following embodiments of the present invention, when a source terminal device sends first uplink information including transmission data of a first TTI to a base station in the first TTI, a data volume to be transmitted in a second TTI is also carried in the first uplink information, so that the base station can obtain the transmission data of the first TTI sent by the source terminal device and simultaneously obtain the data volume to be transmitted in the second TTI, so that the base station can allocate uplink resources of the second TTI to the source terminal device according to the data volume to be transmitted in the second TTI, and send uplink resource information corresponding to the second TTI to the source terminal device, so that the source terminal device sends second uplink information including transmission data of the second TTI in the second TTI according to the uplink resources corresponding to the second TTI. According to the information transmission method, the source terminal equipment does not need to request uplink resources from the base station through a control channel before sending data to the base station in each TTI, and the data volume to be transmitted of the second TTI is sent to the base station through the uplink information, so that the base station can timely acquire the data volume to be transmitted of the second TTI and then perform uplink resource allocation, uplink resource allocation delay between the source terminal equipment and the base station is effectively reduced, data transmission delay between the source terminal equipment and the base station is reduced, then the forwarding efficiency of the base station on the data between the source terminal equipment and the target terminal equipment is improved, and P2P data transmission delay between the source terminal equipment and the target terminal equipment is reduced.

Optionally, the first uplink information further includes: identification of the destination terminal device, and Transport Block (TB) size of the first TTI.

The TB size of the first TTI may be used to indicate the amount of data transmitted in the first TTI.

Optionally, the second embodiment of the present invention may further provide an information transmission method. Fig. 3 is a flowchart of an information transmission method according to a second embodiment of the present invention. As shown in fig. 3, before the source terminal device sends the second uplink information to the base station in the second TTI according to the uplink resource corresponding to the second TTI in S204, the method may further include:

s301, the base station determines the target terminal device according to the identification of the target terminal device.

The identifier of the target terminal device may be represented by a Destination User Equipment identifier (Destination User Equipment IDentity, referred to as DesUEID for short). The first uplink information comprises the identifier of the target equipment, so that the base station can know the target terminal equipment in advance without additionally indicating by the source terminal equipment, and the data transmission delay between the source terminal equipment and the target terminal equipment is effectively reduced.

S302, the base station allocates the downlink resource corresponding to the first TTI to the target terminal device according to the TB size of the first TTI.

The base station may determine the transmission data size of the first TTI according to the size of the TB of the first TTI, and then allocate, to the target terminal device, a time-frequency resource for receiving downlink information sent by the base station in the first TTI according to the transmission data size of the first TTI.

The first uplink information comprises the TB size of the first TTI, so that the base station can determine the data volume to be forwarded to the target terminal device for the target terminal device in advance, the base station can prepare for downlink scheduling of the target terminal device while performing uplink scheduling on the source terminal device, namely, the base station can allocate downlink resources for the target terminal device in advance, the time for allocating the downlink resources to the target terminal device by the base station is effectively reduced, and the data transmission delay between the source terminal device and the target terminal device is reduced.

S303, the base station sends the transmission data of the first TTI to the target terminal device in the first TTI according to the downlink resource corresponding to the first TTI.

The base station may send, according to the Downlink resource corresponding to the first TTI, the first Downlink information including the transmission data of the first TTI to the target terminal device through a Physical Downlink Shared Channel (PDSCH).

Optionally, in S303, before the base station sends the transmission data of the first TTI to the target terminal device in the first TTI according to the downlink resource corresponding to the first TTI, the method further includes:

s303a, the base station sends the downlink resource information corresponding to the first TTI to the target terminal device.

The downlink resource information corresponding to the first TTI may be at least one of an identifier of a physical resource block PRB of the downlink resource corresponding to the first TTI, an identifier of a PRB of the downlink resource corresponding to the first TTI, and a symbol identifier of the downlink resource corresponding to the first TTI.

The base station can send the downlink resource information corresponding to the first TTI to the target terminal equipment through a downlink control channel. The downlink control channel may be, for example, a PDCCH.

S303b, the target terminal device determines the downlink resource corresponding to the first TTI according to the downlink resource information corresponding to the first TTI.

The preset time-frequency position in the first symbol may be, for example, a preset number of resource positions offset from a starting resource position corresponding to the source terminal device in the first symbol.

As follows by way of an example. Fig. 4 is a schematic structural diagram of a radio frame in which first uplink information is located according to a second embodiment of the present invention. As shown in fig. 4, if a radio frame includes: and 10 subframes from subframe 0 to subframe 9, wherein if the first TTI is subframe 9, the source ue may send the first uplink information to the base station on the uplink resource corresponding to the first TTI in the subframe 9. The first symbol in the uplink resource corresponding to the first TTI may be, for example, symbol 0 in subframe 0 shown in fig. 4. The time-frequency resource corresponding to the source terminal device in symbol 0 in subframe 0 includes: resource block 5, resource block 6, resource block 7, resource block 8, and resource block 9. The identifier of the destination terminal device in the first uplink information, the amount of data to be transmitted in the second TTI, and the size of the TB in the first TTI may be carried as control information in resource block 6 and resource block 7 in symbol 0. The transmission data for the first TTI may be carried as data information in the symbol 0 in resource block 5, resource block 8, and resource block 9.

According to the information transmission method, the control information and the data information are carried by different transmission blocks in the uplink resource corresponding to the first TTI, so that the source terminal equipment can independently encode the control information and the data information, and then the base station can independently decode the control information and the data information in the first uplink information.

For more clearly describing the identifier of the destination terminal device, the amount of data to be transmitted in the second TTI, and the position of the TB size of the first TTI in the first uplink information, the following description may be made with reference to fig. 5. Fig. 5 is a schematic format diagram of an identifier of a destination terminal device in first uplink information, an amount of data to be transmitted in the second TTI, and a TB size of the first TTI according to a second embodiment of the present invention.

Because the identifier of the destination terminal device, the data amount to be transmitted in the second TTI, and the TB size of the first TTI are carried in the first uplink information, the base station can quickly acquire information such as the identifier of the destination terminal device, the data amount to be transmitted in the second TTI, and the TB size of the first TTI in advance, and therefore the identifier of the destination terminal device, the data amount to be transmitted in the second TTI, and the TB size of the first TTI can be collectively referred to as fast Buffer Status Report (fbr) information. In the first uplink information, the identifier of the destination terminal device may be represented as DesUEID, the amount of data to be transmitted in the second TTI may be represented by BSR information, and the TB size of the first TTI may be represented as Tbsize.

Optionally, the second embodiment of the present invention may further provide an information transmission method. Fig. 6 is a flowchart of another information transmission method according to a second embodiment of the present invention. As shown in fig. 6, before the source terminal device sends the first uplink information to the base station in the first TTI in S201, the method further includes:

s601, the base station allocates the uplink resource corresponding to the first TTI for the source terminal device.

Optionally, as described above, the allocating, by the base station in S601, the uplink resource corresponding to the first TTI to the source terminal device includes:

and the base station allocates uplink resources corresponding to the first TTI to the source terminal equipment according to the data volume to be transmitted in the BSR sent by the source terminal equipment.

Specifically, if the first TTI is the starting TTI corresponding to the source terminal device, the source terminal device may send a BSR to the base station, and the base station may allocate uplink resources corresponding to the first TTI to the source terminal device according to the amount of data to be transmitted in the BSR.

And if the first TTI is any TTI except the initial TTI corresponding to the source terminal equipment, the base station allocates the uplink resource corresponding to the first TTI to the source terminal equipment according to the data volume to be transmitted in the first TTI in the uplink information sent by the previous TTI of the first TTI.

S602, the base station sends the uplink resource information corresponding to the first TTI to the source terminal equipment.

The process that the base station sends the uplink resource information corresponding to the first TTI to the source terminal device is similar to the specific process that the base station sends the uplink resource information corresponding to the second TTI to the source terminal device in S203, which is specifically referred to above, and is not described herein again.

S603, the source terminal equipment determines the uplink resource corresponding to the first TTI according to the uplink resource information corresponding to the first TTI.

Correspondingly, in S201, the sending, by the source terminal device, the first uplink information to the base station in the first TTI may include:

s604, the source terminal device sends the first uplink information to the base station in the first TTI according to the uplink resource corresponding to the first TTI.

Optionally, as described above, the sending, by the base station to the source terminal device, the uplink resource information corresponding to the second TTI in S203 may include:

the base station sends Downlink Control Information (DCI) to the source terminal device; the DCI includes uplink resource information corresponding to the second TTI.

Specifically, the base station may transmit DCI including the uplink resource information corresponding to the second TTI to the source terminal device through the PDCCH. Correspondingly, the base station may also send DCI including the downlink resource information corresponding to the first TTI to the target terminal device through the PDCCH. The base station may transmit DCI including the uplink resource information corresponding to the first TTI to the target terminal device through the PDCCH.

A third embodiment of the present invention further provides an information transmission apparatus, which may be integrated in a terminal device in a software and/or hardware manner, and configured to execute any information transmission method executed by the source terminal device in fig. 1 to 6. Fig. 7 is a flowchart of an information transmission apparatus according to a third embodiment of the present invention. As shown in fig. 7, the information transmission apparatus 700 may include:

a sending module 701, configured to send, to a base station in a first TTI, first uplink information that includes a data amount to be transmitted in a second TTI and transmission data of the first TTI.

A receiving module 702, configured to receive uplink resource information corresponding to the second TTI sent by the base station; and the uplink resource corresponding to the second TTI is the uplink resource allocated to the source terminal equipment by the base station according to the data volume to be transmitted in the second TTI.

A sending module 701, further configured to send second uplink information to the base station in the second TTI according to the uplink resource corresponding to the second TTI; the second uplink information includes: data for transmission of the second TTI.

Optionally, the first uplink information further includes: the identification of the target terminal equipment and the TB size of the first TTI; the identification of the target terminal device is used for enabling the base station to determine the target terminal device;

alternatively, the first and second electrodes may be,

the time-frequency resource corresponding to the first uplink information is an uplink resource allocated to the source terminal device by the base station according to the data volume to be transmitted in the BSR sent by the source terminal device.

Optionally, the receiving module 702 is specifically configured to receive the DCI including the uplink resource information corresponding to the second TTI sent by the base station.

The information transmission apparatus provided in the third embodiment of the present invention may execute any information transmission method executed by the source terminal device described in fig. 1 to fig. 6, and the specific implementation process and beneficial effects thereof are referred to above, and are not described herein again.

The fourth embodiment of the invention also provides an information transmission device. The information transmission apparatus may be integrated in the base station by software and/or hardware, so as to perform any information transmission method performed by the base station described in fig. 1 to 6. Fig. 8 is a flowchart of an information transmission apparatus according to a fourth embodiment of the present invention. As shown in fig. 8, the information transmission apparatus 800 may include:

a receiving module 801, configured to receive first uplink information sent by a source terminal device in a first TTI; the first uplink information includes: the data volume to be transmitted in the second TTI and the transmission data of the first TTI.

A processing module 802, configured to allocate, according to the amount of data to be transmitted in the second TTI, uplink resources corresponding to the second TTI to the source terminal device;

a sending module 803, configured to send the uplink resource information corresponding to the second TTI to the source terminal device.

A receiving module 801, configured to receive second uplink information sent by the source terminal device in the second TTI according to the uplink resource corresponding to the second TTI; the second uplink information includes: data for transmission of the second TTI.

the processing module 802 is further configured to determine the target terminal device according to the identifier of the target terminal device, and allocate downlink resources corresponding to the first TTI to the target terminal device according to the TB size of the first TTI.

The sending module 803 is further configured to send the transmission data of the first TTI to the target terminal device in the first TTI according to the downlink resource corresponding to the first TTI.

Optionally, the sending module 803 is further configured to send downlink resource information corresponding to the first TTI to the target terminal device; the downlink resource information corresponding to the first TTI is used to enable the target terminal device to determine the downlink resource corresponding to the first TTI, and receive the transmission data of the first TTI, which is sent by the base station, in the first TTI according to the downlink resource corresponding to the first TTI.

Optionally, the processing module 802 is further configured to allocate an uplink resource corresponding to the first TTI to the source terminal device.

A sending module 803, configured to send uplink resource information corresponding to the first TTI to the source terminal device; the uplink resource information corresponding to the first TTI is used to enable the source terminal device to determine the uplink resource corresponding to the first TTI, and to use the uplink resource corresponding to the first TTI.

Optionally, the processing module 802 is specifically configured to allocate, according to the amount of data to be transmitted in the first TTI in the uplink information sent by the previous TTI of the first TTI, an uplink resource corresponding to the first TTI to the source terminal device; or, allocating the uplink resource corresponding to the first TTI to the source terminal device according to the amount of data to be transmitted in the BSR sent by the source terminal device.

Optionally, the sending module 803 is specifically configured to send DCI to the source terminal device; the DCI includes uplink resource information corresponding to the second TTI.

The information transmission apparatus according to the fourth embodiment of the present invention may execute any information transmission method executed by the base station described in fig. 1 to fig. 6, and the specific implementation process and the beneficial effects thereof are described above and will not be described herein again.

The fifth embodiment of the invention also provides terminal equipment. Fig. 9 is a schematic structural diagram of a terminal device according to a fifth embodiment of the present invention. As shown in fig. 9, the terminal apparatus 900 includes: a transmitter 901 and a receiver 902;

the transmitter 901 is configured to transmit first uplink information to a base station in a first TTI; the first uplink information includes: the data volume to be transmitted in the second TTI and the transmission data of the first TTI.

A receiver 902, configured to receive uplink resource information corresponding to the second TTI sent by the base station; and the uplink resource corresponding to the second TTI is the uplink resource allocated to the source terminal equipment by the base station according to the data volume to be transmitted in the second TTI.

A transmitter 901, configured to transmit second uplink information to the base station in the second TTI according to the uplink resource corresponding to the second TTI; the second uplink information includes: data for transmission of the second TTI.

alternatively, the first and second electrodes may be,

Optionally, the receiver 902 is specifically configured to receive DCI sent by the base station; the DCI includes uplink resource information corresponding to the second TTI.

Optionally, the fifth embodiment of the present invention further provides a computer program product. Fig. 10 is a schematic structural diagram of a computer program product according to a fifth embodiment of the present invention. As shown in fig. 10, the computer program product 1000 may include: program code 1001.

The program code 1001 may be a program code corresponding to an information transmission method executed by the source terminal device described in any one of fig. 1 to fig. 6 in the foregoing embodiment of the present invention.

The program code 1001 in the computer program product 1000 may for example be executed by a processor in the terminal device as described above and shown in fig. 9.

Optionally, the fifth embodiment of the present invention further provides a storage medium. Fig. 11 is a schematic structural diagram of a storage medium according to a fifth embodiment of the present invention. As shown in fig. 11, a storage medium 1100 may be used to store a computer program product 1101. The computer program product 1101 may comprise: program code 1102.

The program code 1102 may be a program code corresponding to an information transmission method executed by the source terminal device described in any one of fig. 1 to 6 and provided by the above-described embodiment of the present invention.

The storage medium 1100 may be an internal memory in the terminal device shown in fig. 9 or an external memory connected to the terminal device shown in fig. 9. The program code 1102 in the computer program product 1101 may for example be executed by a processor in the user equipment as described above with reference to fig. 9.

The terminal device, the computer program product, and the storage medium according to the fifth embodiment of the present invention may be configured to execute any information transmission method executed by the source terminal device described in fig. 1 to fig. 6, and specific implementation processes and beneficial effects thereof are described above and will not be described herein again.

The sixth embodiment of the invention also provides a base station. Fig. 12 is a schematic structural diagram of a base station according to a sixth embodiment of the present invention. As shown in fig. 12, the base station 1200 may include: a receiver 1201, a processor 1202, and a transmitter 1203; the receiver 1201 and the transmitter 1203 are connected to the processor 1202, respectively.

A receiver 1201, configured to receive first uplink information sent by a source terminal device in a first TTI; the first uplink information includes: the data volume to be transmitted in the second TTI and the transmission data of the first TTI.

And a processor 1202, configured to allocate, to the source terminal device, an uplink resource corresponding to the second TTI according to the amount of data to be transmitted in the second TTI.

A transmitter 1203, configured to send uplink resource information corresponding to the second TTI to the source terminal device.

A receiver 1201, configured to receive second uplink information sent by the source terminal device in the second TTI according to the uplink resource corresponding to the second TTI; the second uplink information includes: data for transmission of the second TTI.

Optionally, the first uplink information further includes: identification of the destination terminal device, TB size of the first TTI.

The processor 1202 is further configured to determine the target terminal device according to the identifier of the target terminal device, and allocate downlink resources corresponding to the first TTI to the target terminal device according to the TB size of the first TTI.

The transmitter 1205 is further configured to transmit the transmission data of the first TTI to the target terminal device in the first TTI according to the downlink resource corresponding to the first TTI.

Optionally, the transmitter 1205 is further configured to transmit downlink resource information corresponding to the first TTI to the target terminal device; the downlink resource information corresponding to the first TTI is used to enable the target terminal device to determine the downlink resource corresponding to the first TTI, and receive the transmission data of the first TTI, which is sent by the base station, in the first TTI according to the downlink resource corresponding to the first TTI.

Optionally, the processor 1202 is further configured to allocate an uplink resource corresponding to the first TTI to the source terminal device.

A transmitter 1205, configured to send uplink resource information corresponding to the first TTI to the source terminal device; the uplink resource information corresponding to the first TTI is used to enable the source terminal device to determine the uplink resource corresponding to the first TTI, and to use the uplink resource corresponding to the first TTI.

Optionally, the processor 1202 is specifically configured to allocate, according to the amount of data to be transmitted in the first TTI in the uplink information sent by the previous TTI of the first TTI, an uplink resource corresponding to the first TTI to the source terminal device; or, allocating the uplink resource corresponding to the first TTI to the source terminal device according to the amount of data to be transmitted in the BSR sent by the source terminal device.

Optionally, the transmitter 1205 is specifically configured to transmit DCI to the source terminal device; the DCI includes uplink resource information corresponding to the second TTI.

Optionally, a sixth embodiment of the present invention further provides a computer program product. Fig. 13 is a schematic structural diagram of a computer program product according to a sixth embodiment of the present invention. As shown in fig. 13, computer program product 1300 may include: program code 1501.

The program code 1501 may be a program code corresponding to the information transmission method executed by the base station shown in any one of fig. 1 to 6 in the foregoing embodiments of the present invention.

The program code 1501 in this computer program product 1300 may be executed by the processor 1202 in the base station 1200 shown in fig. 12 described above, for example.

Optionally, the sixth embodiment of the present invention further provides a storage medium. Fig. 14 is a schematic structural diagram of a storage medium according to a sixth embodiment of the present invention. As shown in fig. 14, storage medium 1400 may be used to store computer program product 1401. Computer program product 1401 may include: program code 1402.

The program code 1402 may be a program code corresponding to the method for transmitting information, which is provided by the base station in any one of fig. 1 to 6 and is executed by the base station according to the embodiment of the present invention.

The storage medium 1400 may be an internal memory in the base station 1200 shown in fig. 12 or an external memory connected to the base station 1200 shown in fig. 12. The program code 1402 in this computer program product 1401 may be executed by the processor 1202 in the base station 1200 shown in fig. 12 described above, for example.

The base station, the computer program product and the storage medium according to the sixth embodiment of the present invention may be used to execute any information transmission method executed by the base station described in fig. 1 to fig. 6, and specific implementation processes and beneficial effects thereof are described above, and are not described herein again.

Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An information transmission method, comprising:

the source terminal equipment sends first uplink information to the base station in a first Transmission Time Interval (TTI); the first uplink information includes: the data volume to be transmitted in the second TTI and the transmission data of the first TTI;

the source terminal equipment sends second uplink information to the base station in the second TTI according to the uplink resource corresponding to the second TTI; the second uplink information includes: transmission data of the second TTI;

the first uplink information further includes: identification of the target terminal equipment, and the size of a Transport Block (TB) of the first TTI;

the size of the TB of the first TTI is used to enable the base station to allocate downlink resources corresponding to the first TTI to the destination terminal device, and to send transmission data of the first TTI to the destination terminal device in the first TTI according to the downlink resources corresponding to the first TTI.

2. The method of claim 1, wherein the identifier of the destination terminal device, the amount of data to be transmitted in the second TTI, and the TB size of the first TTI are located at a preset time-frequency position in a first symbol in a time-frequency resource corresponding to the first uplink information.

3. The method according to claim 2, wherein the time-frequency resource corresponding to the first uplink information is an uplink resource allocated to the source terminal device by the base station according to the amount of data to be transmitted in the first TTI in the uplink information sent by the previous TTI of the first TTI;

alternatively, the first and second electrodes may be,

and the time-frequency resource corresponding to the first uplink information is an uplink resource allocated to the source terminal equipment by the base station according to the data volume to be transmitted in the buffer status report BSR sent by the source terminal equipment.

4. The method according to any of claims 1-3, wherein the receiving, by the source terminal device, the uplink resource information corresponding to the second TTI sent by the base station comprises:

the source terminal equipment receives downlink control information DCI sent by the base station; the DCI comprises uplink resource information corresponding to the second TTI.

5. An information transmission method, comprising:

the base station receives second uplink information sent by the source terminal equipment in the second TTI according to the uplink resource corresponding to the second TTI; the second uplink information includes: transmission data of the second TTI;

before the base station receives second uplink information sent by the source terminal device in the second TTI according to the uplink resource corresponding to the second TTI, the method further includes:

6. The method according to claim 5, wherein before the base station sends the transmission data in the first TTI to the destination terminal device in the first TTI according to the downlink resource corresponding to the first TTI, the method further includes:

the base station sends downlink resource information corresponding to the first TTI to the target terminal equipment; and the downlink resource information corresponding to the first TTI is used for enabling the target terminal device to determine the downlink resource corresponding to the first TTI, and receive the transmission data of the first TTI sent by the base station in the first TTI according to the downlink resource corresponding to the first TTI.

7. The method of claim 5, wherein the identifier of the destination terminal device, the amount of data to be transmitted in the second TTI, and the size of the TB in the first TTI are located at a preset time-frequency position in a first symbol in the uplink resource corresponding to the first TTI.

8. The method of claim 7, wherein before the base station receives the first uplink information transmitted by the source terminal device in the first TTI, the method further comprises:

the base station sends uplink resource information corresponding to the first TTI to the source terminal equipment; and the uplink resource information corresponding to the first TTI is used for enabling the source terminal equipment to determine the uplink resource corresponding to the first TTI, and sending the first uplink information to the base station in the first TTI according to the uplink resource corresponding to the first TTI.

9. The method of claim 8, wherein the base station allocates uplink resources corresponding to the first TTI to the source terminal device, and wherein the allocating comprises:

10. The method according to any of claims 5-9, wherein the base station sending the uplink resource information corresponding to the second TTI to the source terminal device comprises:

the base station sends downlink control information DCI to the source terminal equipment; the DCI comprises uplink resource information corresponding to the second TTI.

11. A terminal device, comprising: a transmitter and a receiver;

the transmitter is configured to transmit first uplink information to a base station in a first transmission time interval TTI; the first uplink information includes: the data volume to be transmitted in the second TTI and the transmission data of the first TTI;

the receiver is configured to receive uplink resource information corresponding to the second TTI sent by the base station; the uplink resource corresponding to the second TTI is the uplink resource allocated to the source terminal equipment by the base station according to the data volume to be transmitted in the second TTI;

the transmitter is further configured to transmit second uplink information to the base station in the second TTI according to the uplink resource corresponding to the second TTI; the second uplink information includes: transmission data of the second TTI;

12. The terminal device of claim 11, wherein the identifier of the destination terminal device, the amount of data to be transmitted in the second TTI, and the TB size of the first TTI are located at a preset time-frequency position in a first symbol in a time-frequency resource corresponding to the first uplink information.

13. The terminal device according to claim 12, wherein the time-frequency resource corresponding to the first uplink information is an uplink resource allocated to the source terminal device by the base station according to the amount of data to be transmitted in the first TTI in the uplink information sent by the previous TTI of the first TTI;

alternatively, the first and second electrodes may be,

14. The terminal device according to any of claims 11-13,

the receiver is specifically configured to receive downlink control information DCI sent by the base station; the DCI comprises uplink resource information corresponding to the second TTI.

15. A base station, comprising: a receiver, a processor, and a transmitter; the receiver and the transmitter are respectively connected with the processor;

the receiver is configured to receive first uplink information sent by a source terminal device in a first transmission time interval TTI; the first uplink information includes: the data volume to be transmitted in the second TTI and the transmission data of the first TTI;

the processor is configured to allocate, to the source terminal device, uplink resources corresponding to the second TTI according to the amount of data to be transmitted in the second TTI;

the receiver is further configured to receive second uplink information sent by the source terminal device in the second TTI according to the uplink resource corresponding to the second TTI; the second uplink information includes: transmission data of the second TTI;

the processor is further configured to determine the destination terminal device according to the identifier of the destination terminal device, and allocate downlink resources corresponding to the first TTI to the destination terminal device according to the TB size of the first TTI;

the transmitter is further configured to transmit the transmission data of the first TTI to the destination terminal device in the first TTI according to the downlink resource corresponding to the first TTI.

16. The base station of claim 15,

the transmitter is further configured to transmit downlink resource information corresponding to the first TTI to the destination terminal device; and the downlink resource information corresponding to the first TTI is used for enabling the target terminal device to determine the downlink resource corresponding to the first TTI, and receive the transmission data of the first TTI sent by the base station in the first TTI according to the downlink resource corresponding to the first TTI.

17. The base station of claim 15, wherein the identifier of the destination terminal device, the amount of data to be transmitted in the second TTI, and the size of the TB in the first TTI are located at a preset time-frequency position in a first symbol in the uplink resource corresponding to the first TTI.

18. The base station of claim 17,

the processor is further configured to allocate uplink resources corresponding to the first TTI to the source terminal device;

the transmitter is further configured to transmit uplink resource information corresponding to the first TTI to the source terminal device; and the uplink resource information corresponding to the first TTI is used for enabling the source terminal equipment to determine the uplink resource corresponding to the first TTI, and sending the first uplink information to the base station in the first TTI according to the uplink resource corresponding to the first TTI.

19. The base station of claim 18,

the processor is specifically configured to allocate, to the source terminal device, an uplink resource corresponding to a first TTI according to a data amount to be transmitted in the first TTI in uplink information sent by a previous TTI of the first TTI; or allocating the uplink resource corresponding to the first TTI to the source terminal device according to the data volume to be transmitted in the buffer status report BSR sent by the source terminal device.

20. Base station according to any of the claims 15-19,

the transmitter is specifically configured to transmit downlink control information DCI to the source terminal device; the DCI comprises uplink resource information corresponding to the second TTI.