WO2018177109A1

WO2018177109A1 - Data transmission method and device, terminal, and storage medium

Info

Publication number: WO2018177109A1
Application number: PCT/CN2018/078419
Authority: WO
Inventors: 陈杰; 卢有雄; 杨瑾; 陈玉芹
Original assignee: 中兴通讯股份有限公司
Priority date: 2017-03-28
Filing date: 2018-03-08
Publication date: 2018-10-04
Also published as: CN108668371B; CN108668371A

Abstract

Disclosed in the present invention are a data transmission method and device, a terminal, and a storage medium. The method comprises: a sending end sending, on a plurality of carriers on a sidelink, data to be transmitted, the sending end at least sending control information on a first carrier, the control information being configured to indicate the position of the data to be transmitted, and only sending, on a second carrier of a second carrier set, the data to be transmitted. The technical solution above indicates, by means of the control information on the first carrier, the position of the carrier at which the data to be transmitted is located or the position of a resource pool, enables the uniform management of the data to be transmitted on a plurality of second carriers , realizing cross-carrier scheduling on the sidelink, resolving the problem in the related art that the cross-carrier scheduling on the sidelink cannot be realized.

Description

Data transmission method, device, terminal and storage medium

Cross-reference to related applications

The present application is based on a Chinese patent application filed on Jan. 28, 2017, the entire disclosure of which is hereby incorporated by reference.

Technical field

The present invention relates to the field of communications, and in particular, to a data transmission method, apparatus, terminal, and storage medium.

Background technique

In the related technology, with the rapid development of the economy and society, the rapid growth of car ownership in China and the frequent occurrence of road traffic accidents have become one of the important factors affecting the public safety of China in recent years. The technologies to improve vehicle safety are mainly divided into passive safety technology and active safety technology. Passive safety technology is configured to protect people inside and outside the vehicle after an accident; active safety technology is configured to prevent and reduce accidents in the vehicle and to avoid injury. Active safety technology is the focus and trend of modern vehicle safety technology development.

The vehicle networking system refers to providing vehicle information through sensors, vehicle terminals, and electronic tags mounted on the vehicle, and adopts various communication technologies to realize V2V (Vehicle to Vehicle V2V) and Vehicle to Person V2P (Vehicle to Person, V2P), the interconnection between vehicles and infrastructure (V2I), and the effective use of information extraction and sharing on the information network platform, effective control of vehicles and provision of integrated services. Vehicle networking can realize communication-based vehicle information notification and collision hazard warning. By using advanced wireless communication technology and next-generation information processing technology, real-time information interaction between vehicle, vehicle, and roadside infrastructure can be realized, and each other can be informed. Status (including vehicle position, speed, acceleration, driving path) and learned road environment information, collaboratively aware of road hazard conditions, timely providing a variety of collision warning information to prevent road traffic safety accidents, and become the current solution to road traffic safety issues A new idea.

In recent years, with the development of new mobile communication technologies, it is one of the hot researches to solve the problem of vehicle networking communication based on Long Term Evolution (LTE) technology. In the device-to-device (D2D) communication mode of the LTE system, when there is a service between the user equipment (User Equipment, UE), the service data between the UEs is not forwarded by the base station, but Directly transmitted from the data source UE to the target UE through the air interface. FIG. 1 is a schematic diagram of a D2D communication structure according to the related art. As shown in FIG. 1, the base station 1, the terminal UE1, and the terminal UE2 have obvious differences. In the traditional cellular system communication mode, for the V2V communication of the vehicle network, the short-distance communication between the vehicle and the vehicle can apply the D2D communication mode, thereby saving the wireless spectrum resources and reducing the data transmission pressure of the core network. Reduce system resource consumption, increase spectrum efficiency of cellular communication systems, reduce terminal transmission power consumption, and save network operation costs to a large extent.

In the related art protocol, the transmitting end UE only supports scheduling transmission of single carrier data on the sidelink link, but does not support for cross carrier scheduling.

In view of the inability to implement cross-carrier scheduling on sidelink in related technologies, there is currently no effective solution.

Summary of the invention

In view of this, the embodiments of the present invention are directed to providing a data transmission method, apparatus, terminal, and storage medium, so as to at least solve the problem that the cross-carrier scheduling on the sidelink cannot be implemented in the related art.

According to an embodiment of the present disclosure, a data transmission method is provided, including:

The transmitting end sends the data to be transmitted on the multiple carriers on the side link, where the sending end sends at least the control information on the first carrier, and only sends the to-be-transmitted transmission on the second carrier in the second carrier set. Data, wherein the first carrier and the second carrier are carriers in the multiple carriers, and the control information is configured to indicate a location where the data to be transmitted is located.

In the foregoing solution, the control information that is sent on the first carrier includes at least one of the following: the indication information corresponding to the carrier where the data to be transmitted is located; and the indication information corresponding to the resource pool of the carrier where the data to be transmitted is located.

In the above solution, the control information carries resource identification source ID information that is configured to indicate that the to-be-transmitted data is sent by the sending end, where the carrier aggregation sent by the sending end is on multiple carriers in the CA. The data has the same resource ID Source ID information.

In the above solution, the location of the first carrier in the multiple carriers is determined by one of the following manners: pre-configured by the transmitting end; according to signaling indication of the base station; and the synchronization source selected by the transmitting end during the synchronization process Corresponding carrier; a carrier used by the serving cell where the sending end resides; selecting a sending resource pool list configured by the pre-configuration or base station and a carrier list corresponding to the sending resource pool list, according to the resource pool selection policy Sending a resource pool, determining that the carrier in which the resource pool is located is the first carrier, where the resource pool selection policy includes at least one of the following: randomly selecting, and calculating according to the identifier information of the sending end, according to the geographic location of the sending end The position is calculated and selected according to the type of sender.

In the above solution, the control information on the first carrier includes: one centralized scheduling information or multiple independent scheduling information.

In the above solution, when multiple pieces of the independent scheduling information are sent on the first carrier, the multiple independent scheduling information is located on one Transmission Time Interval (TTI) or multiple transmission time intervals TTI.

In the above solution, when the control information sent on the first carrier is a centralized scheduling information, the control information is configured to indicate data resource information of the to-be-transmitted data on all used carriers of the sending end.

In the above solution, when the control information sent on the first carrier is multiple independent scheduling information, each of the control information is configured to indicate data resource information of the to-be-transmitted data on a unique carrier.

In the foregoing solution, the indication information corresponding to the carrier where the data is to be transmitted is the first number index of all available carriers on the edge link of the sending end, and the first of each available carrier is determined by one of the following manners. Number index: pre-configured; according to the signaling indication of the base station.

In the foregoing solution, the indication information corresponding to the resource pool of the carrier where the data to be transmitted is located is a second number index of all the sending resource pools of the sending end on the carrier, and each of the foregoing manners is determined by using one of the following manners. The second number index of the sending resource pool: pre-configured; according to the signaling indication of the base station.

In the foregoing solution, the indication information corresponding to the carrier where the data to be transmitted is located is a third number index of the sending resource pool of all the carriers on the sidelink of the sending end, where the determining is performed according to the third number index. The carrier location used by the sending end and the configuration information of the sending resource pool used are determined by one of the following methods: a third number index of each of the sending resource pools: pre-configured; according to signaling indications of the base station.

In the above solution, the indication manner of the indication information included in the control information includes one of the following: a direct indication mode, where an indication field is added to the control information for indication, and an indirect indication mode, where the physical edge link on the first carrier is used. The corresponding relationship between the control channel resource location and the corresponding indicated carrier and/or resource pool is indicated.

In the above solution, the direct indication is used for the carrier location corresponding to the carrier where the data to be transmitted is located, and the indirect indication is used for the resource pool information of the carrier where the data to be transmitted is located; or, the data to be transmitted is used. The indirect indication is used for the carrier location corresponding to the carrier, and the direct indication is used for the resource pool information of the carrier where the data to be transmitted is located.

According to another embodiment of the present disclosure, a data transmission method is further provided, including:

The receiving end receives the data to be transmitted on the multiple carriers on the sidelink by using the multi-carrier data transmission technology, where the receiving end acquires the to-be-transmitted transmission on the multiple carriers by the transmitting end according to the control information on the first carrier. Transmitting data, wherein the first carrier is a carrier of the multiple carriers, and the control information is configured to indicate a location where the data to be transmitted is located.

In the foregoing solution, the control information on the first carrier includes at least one of the following: the indication information corresponding to the carrier where the data to be transmitted is located; and the indication information corresponding to the resource pool of the carrier where the data to be transmitted is located.

According to another embodiment of the present disclosure, there is provided a data transmission apparatus comprising: a determining module configured to determine to transmit data to be transmitted on a plurality of carriers on a side link; and a transmitting module configured to be Transmitting at least control information on a carrier, and transmitting only the data to be transmitted on a second carrier in the second carrier set, where the first carrier and the second carrier are carriers in the multiple carriers, The control information is configured to indicate a location where the data to be transmitted is located.

According to another embodiment of the present disclosure, a data transmission apparatus is provided, including: a receiving module configured to receive data to be transmitted on a plurality of carriers on a sidelink; and an acquiring module configured to perform control according to the first carrier And the information about the to-be-transmitted data transmitted by the transmitting end on the multiple carriers, where the first carrier is a carrier of the multiple carriers, and the control information is configured to indicate that the data to be transmitted is located position.

According to another embodiment of the present disclosure, there is also provided a terminal, comprising: a first processor configured to determine to transmit data to be transmitted on a plurality of carriers on an edge link; the first transceiver configured to be in the first Transmitting at least control information on a carrier, and transmitting only the data to be transmitted on the second carrier in the second carrier set; wherein the first carrier and the second carrier are carriers in the multiple carriers, The control information is configured to indicate a location where the data to be transmitted is located.

According to another embodiment of the present disclosure, there is also provided a terminal, comprising: a second transceiver configured to receive data to be transmitted on a plurality of carriers on a sidelink by a multi-carrier data transmission technology; a second processor, configured Obtaining, according to the control information on the first carrier, the to-be-transmitted data that is sent by the transmitting end on the multiple carriers, where the first carrier is a carrier in the multiple carriers, and the control information is configured as Indicates the location of the data to be transmitted.

According to another embodiment of the present disclosure, there is also provided a storage medium including a stored program, wherein the program is executed to execute the above data transmission method.

According to another embodiment of the present disclosure, there is also provided a processor configured to execute a program, wherein the program executes the data transmission method described above.

The embodiment of the present disclosure further provides a data transmission apparatus, including:

a memory configured to save a tunnel authorization information processing program;

And a processor configured to execute the program, wherein the program executes the data transmission method described above.

Through the disclosure, the transmitting end sends the data to be transmitted on multiple carriers on the sidelink, where the sending end sends at least control information on the first carrier, where the control information is configured to indicate the location of the data to be transmitted, Only the to-be-transmitted data is transmitted on the second carrier in the two-carrier set. With the above technical solution, the location of the carrier or the location of the resource pool where the data to be transmitted is located is indicated by the control information on the first carrier, which facilitates unified management of data to be transmitted on multiple second carriers, and is implemented on the sidelink. Cross-carrier scheduling solves the problem that cross-carrier scheduling on sidelink cannot be implemented in related technologies.

DRAWINGS

The drawings described herein are intended to provide a further understanding of the present disclosure, and are intended to be a part of the present disclosure. In the drawing:

1 is a schematic diagram of a D2D communication structure according to the related art;

2 is a block diagram showing the hardware structure of a mobile terminal of a data transmission method according to an embodiment of the present disclosure;

3 is a flowchart of a data transmission method according to an embodiment of the present disclosure;

4 is a schematic diagram of multi-carrier data transmission of a UE on a sidelink according to the related art;

FIG. 5 is a schematic diagram of a frame structure of an LTE system according to the related art; FIG.

6 is a schematic diagram of transmitting only one centralized scheduling control information on a first carrier according to cross-carrier scheduling communication according to Example 5 of the present disclosure;

7 is a schematic structural diagram of centralized scheduling side link control indication information SCI according to Example 5 of the present disclosure;

8 is a schematic diagram of transmitting a plurality of independent control information on a first carrier when cross-carrier scheduling communication according to Example 5 of the present disclosure;

9 is a block diagram 1 of a structure of a data transmission device according to an embodiment of the present disclosure;

FIG. 10 is a block diagram 2 of a structure of a data transmission device according to an embodiment of the present disclosure.

detailed description

Embodiment 1

A mobile communication network (including but not limited to an LTE mobile communication network) is provided in the embodiment of the present application, and the network architecture of the network may include a network side device (for example, a base station) and a terminal. In this embodiment, a data transmission method that can be run on the network architecture is provided. It is to be noted that the operating environment of the data transmission method provided in the embodiment of the present application is not limited to the foregoing network architecture.

The method embodiment provided in Embodiment 1 of the present application can be executed in a terminal, a computer terminal or the like. Taking the operation on the terminal as an example, FIG. 2 is a hardware structural block diagram of a terminal of a data transmission method according to an embodiment of the present disclosure. As shown in FIG. 2, terminal 20 may include one or more (only one shown) processor 202 (processor 202 may include, but is not limited to, a Microcontroller Unit (MCU) or a programmable logic device (Field). A processing device such as a Programmable Gate Array (FPGA), a memory 204 configured to store data, and a transceiver 206 configured as a communication function. It will be understood by those skilled in the art that the structure shown in FIG. 2 is merely illustrative and does not limit the structure of the above electronic device. For example, terminal 20 may also include more or fewer components than those shown in FIG. 2, or have a different configuration than that shown in FIG. 2.

The memory 204 can be configured as a software program and a module for storing application software, such as program instructions/modules corresponding to the data transfer method in the embodiment of the present disclosure, and the processor 202 executes each by executing a software program and a module stored in the memory 204. A functional application and data processing, that is, the above method is implemented. Memory 204 can include high speed random access memory and can also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid state memory. In some examples, memory 204 can further include memory remotely located relative to processor 202, which can be connected to terminal 20 over a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

The transceiver 206 is configured to receive or transmit data via a network. The network instance described above may include a wireless network provided by a communication provider of the terminal 20. In one example, the transceiver 206 includes a Network Interface Controller (NIC) that can be connected to other network devices through a base station to communicate with the Internet. In one example, transceiver 206 can be a Radio Frequency (RF) module configured to communicate wirelessly with the Internet.

Before introducing the embodiments of the present disclosure, it should be added that the side links described in the present application mean the sidelink technology.

In this embodiment, a data transmission method running on a terminal is provided. FIG. 3 is a flowchart of a data transmission method according to an embodiment of the present disclosure. As shown in FIG. 3, the flow includes the following steps:

Step S302, the transmitting end determines that the data to be transmitted is sent on multiple carriers on the side link by using a multi-carrier data transmission technology;

Step S304: The transmitting end sends the to-be-transmitted data on multiple carriers on the side link, where the transmitting end sends at least control information on the first carrier, and only sends the second carrier in the second carrier set. Data to be transmitted.

It should be noted that the first carrier and the second carrier in the foregoing embodiment are carriers in the multiple carriers, and the control information is configured to indicate a location where the data to be transmitted is located.

Through the foregoing steps, the sending end sends the to-be-transmitted data on the multiple carriers on the sidelink according to the base station signaling indication or the pre-configuration information, where the sending end sends at least the control information on the first carrier, where the control information is configured to indicate The location where the data to be transmitted is located, and only the data to be transmitted is sent on the second carrier in the second carrier set. With the above technical solution, the location of the carrier or the location of the resource pool where the data to be transmitted is located is indicated by the control information on the first carrier, which facilitates unified management of data to be transmitted on multiple second carriers, and is implemented on the sidelink. Cross-carrier scheduling solves the problem that cross-carrier scheduling on sidelink cannot be implemented in related technologies.

In an embodiment, the control information on the first carrier includes at least one of the following: indication information corresponding to the carrier where the data to be transmitted is located; and indication information corresponding to the resource pool of the carrier where the data to be transmitted is located.

In an embodiment, the control information carries resource identifier source ID information configured to indicate that the data to be transmitted is sent by the sending end, where multiple carriers in the carrier aggregation (CA) sent by the sending end The data on the carrier has the same Source ID information.

In an embodiment, the location of the first carrier in the multiple carriers is determined by one of the following manners: the transmitter is pre-configured; according to the signaling indication of the base station; the synchronization source selected by the sender during the synchronization process corresponds to Carrier; the carrier used by the serving cell where the transmitting end resides; selecting a sending resource pool according to the resource pool selection policy from the pre-configured or base station configured transmission resource pool list and the carrier list corresponding to the sending resource pool list The carrier of the resource pool is determined to be the first carrier, where the resource pool selection policy includes at least one of the following: randomly selected, calculated according to the identifier information of the sender, calculated according to the geographic location of the sender, according to the sender Type selection.

In an embodiment, the control information on the first carrier includes: one centralized scheduling information or multiple independent scheduling information.

In an embodiment, when multiple pieces of the independent scheduling information are sent on the first carrier, the multiple independent scheduling information is located on one transmission time interval or multiple transmission time intervals.

In an embodiment, when the control information on the first carrier is a centralized scheduling information, the control information includes: data resource information of the to-be-transmitted data on all used carriers of the transmitting end.

In an embodiment, when the control information on the first carrier is multiple independent scheduling information, each of the control information is configured to indicate data resource information of the to-be-transmitted data on a unique carrier. It is to be noted that, in addition to the transmission of the control information, the first carrier may also send data to be transmitted, that is, the plurality of independent scheduling information may indicate data resource information of the to-be-transmitted data on the first carrier and/or the second carrier. .

In an embodiment, the indication information corresponding to the carrier where the data to be transmitted is located is a first number index of all available carriers of the sending end on the sidelink, and the first number index of each available carrier is determined by one of the following manners. : Pre-configured; according to the signaling indication of the base station.

In an embodiment, the indication information corresponding to the resource pool of the carrier where the data to be transmitted is located is a second number index of all the sending resource pools of the sending end on the carrier, and each of the sending resources is determined by one of the following manners. The second number index of the pool: pre-configured; according to the signaling indication of the base station.

In an embodiment, the indication information corresponding to the carrier where the data to be transmitted is located is a third number index of the sending resource pool of all the carriers on the sidelink of the sending end, wherein the sending end is determined according to the third number index. The carrier location used and the information of the used transmission resource pool are determined by one of the following methods: a third number index of each of the sending resource pools: pre-configured; according to signaling indications of the base station.

In an embodiment, the indication manner of the indication information included in the control information includes one of the following: adding an indication field to the control information for direct indication, which may be referred to as a direct indication manner; and passing the PSCCH resource location on the first carrier The indirect indication is corresponding to the corresponding relationship between the indicated carrier and/or the resource pool, and may be referred to as an indirect indication manner.

In an embodiment, the carrier location corresponding to the carrier where the data to be transmitted is directly indicated, and the resource pool information indicating the carrier where the data to be transmitted is located is indirectly indicated; or the carrier corresponding to the data to be transmitted is corresponding to the carrier. The carrier location is indirectly indicated, and the resource pool information of the carrier where the data to be transmitted is located is directly indicated.

According to another embodiment of the present disclosure, there is also provided a data transmission method, which may be configured as a receiving end, the method comprising:

The receiving end receives the data to be transmitted on the multiple carriers on the sidelink by using the multi-carrier data transmission technology, wherein the receiving end acquires the to-be-transmitted data transmitted by the transmitting end on the multiple carriers according to the control information on the first carrier, The first carrier is a carrier in the multiple carriers, and the control information is configured to indicate a location where the data to be transmitted is located.

It should be added that the first carrier refers to a carrier that transmits control information on a sidelink link, and the second carrier set refers to a set of all available carriers except the first carrier on the sidelink link, and The UE transmits only data on the second carrier.

The details are described below in conjunction with the embodiments of the present disclosure.

The R14V2V communication defined in the related art adopts a broadcast mode, and the transmitting end can transmit corresponding service information on up to two carriers, and these settings are generally used to realize transmission of basic security services between vehicles or between vehicles and other devices. However, the technical solutions in the related art, for new V2X services, such as inter-vehicle road environment-aware data transmission, unmanned data transmission, etc., cannot meet the communication requirements of the V2X well from the data rate or the delay. Therefore, the enhancement is performed on the UE capability, and the sidelink multi-carrier data transmission technology can better solve the above problem. FIG. 4 is a schematic diagram of multi-carrier data transmission of the UE on the sidelink according to the related art, as shown in FIG. 4, the TX UE indicates The transmitting end UE, the RX UE represents the receiving end UE.

The related art has solved that under the configuration of the base station or the pre-configuration of the UE, the UE may select a physical sidelink control channel (PSCCH) and a PSSCH resource for data transmission on the sidelink link, but for a larger Data services often require more bandwidth support. On the sidelink link, it may not be able to find a suitable continuous large bandwidth for data transmission. Therefore, the sender may need to aggregate multiple carriers to simultaneously transmit data to meet the needs of new services. The amount of data and the requirement for low latency. When the transmitting end needs to perform data transmission on multiple carriers, it is necessary to transmit scheduling information and data information corresponding to each carrier. The current protocol determines that the transmitting UE only supports scheduling transmission of single carrier data on the sidelink link, but does not support cross-carrier scheduling.

The technical solution in the embodiments of the present disclosure aims to solve the problems in the related art described above. The embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments in the present application may be arbitrarily combined with each other.

The network side includes one or more of the following entities: an Evolved NodeB (eNB), a Relay Node (RN), a Multi-cell Coordination Entity (MCE), and a Gateway (GW). Mobility Management Entity (MME), Evolved Universal Terrestrial Radio Access Network (EUTRAN) Operation Administration and Maintenance (OAM) Manager, eNB The network side entity is described as an example.

In a conventional cellular communication system, the radio resources of the terminal UE are uniformly controlled and scheduled by the evolved NodeB (eNB), and the eNB indicates the downlink or uplink resources configured by the UE, and the UE receives the corresponding downlink resources according to the configuration indication of the eNB. The data signal transmitted by the eNB or the signal is transmitted to the eNB on the uplink resource. In the LTE system, the radio resources divide resources in units of radio frames in the time domain. FIG. 5 is a schematic diagram of a frame structure of an LTE system according to the related art. As shown in FIG. 5, each radio frame is 10 ms, and includes 10 sub- Frame, each sub-frame is 1ms, divided into 2 slot slots of 0.5ms. When the system frame structure uses a normal Cyclic Prefix (Normal CP), each subframe contains 14 Single-Carrier Frequency Division Multiple Access (SC-FDMA) symbols or orthogonal frequencies. Orthogonal Frequency Division Multiplexing (OFDM) symbols, including 7 symbols on each slot. When the system frame structure adopts Extended Cyclic Prefix (Extended CP), each subframe contains 12 symbols, and each slot includes 6 symbols. In the frequency domain, resources are divided in units of subcarriers, each of which contains 15 kHz or 7.5 kHz resources. According to the foregoing time domain and frequency domain resource unit, the minimum unit of the eNB scheduling the time-frequency resource for the UE is a resource block (Resource Block, RB), and the RB is defined as 1 slot in the time domain and continuous in the frequency domain.

Subcarriers,

Wherein said

Indicates that the number of subcarriers is 12 or 24.

In the LTE-based D2D communication system, a system uplink subframe is used as a physical side link shared channel (PSSCH) subframe, and is configured to transmit D2D data. The D2D sender indicates the PSSCH resource used in the side link (ie, D2D link) Control Information (SCI). As a special application of the D2D communication mode, the V2V system can use the D2D communication scheme, that is, the SCI information is used to indicate the corresponding data channel resource configuration, and the V2V data information is transmitted on the corresponding data channel resource.

At present, the protocol has determined that V2V uses the in-vehicle sensing device sensing on the sidelink link to select the appropriate time-frequency resource to send data information. The sender can use up to two carriers. These settings can basically meet the transmission of traditional basic security services. However, for new V2X services in some scenarios, a larger data rate may be required, and a lower delay can guarantee. The effective transmission of data information. There will be some enhancements in terms of UE capabilities. Among them, carrier aggregation technology is a technology to solve the problem.

When the transmitting UE performs data transmission on multiple carriers, the receiving end has to blindly check the control information, and then demodulate the data information indicated by the receiving control information according to the control information. In order to reduce the blind detection complexity of the receiving UE, in the embodiment of the present disclosure, the control information corresponding to the data information sent on all carriers may be sent on the carrier of the same sidelink link.

The content of the control information SCI of the V2X on the sidelink specified by the current protocol in the related art is:

Priority-3 bits as defined in section 4.4.5.1 of[7]

-Resource reservation–4 bits as defined in section 14.2.1 of[3]

-Frequency resource location–

Bits as defined in section 14.1.1.4C of[3].

-Time gap between initial transmission and retransmission-4 bits as defined in section 14.1.1.4C of[3]

-Modulation and coding scheme–5 bits as defined in section 14.2.1 of[3]

-Retransmission index–1 bit as defined in section 14.2.1 of[3].

-Reserved information bits are added until the size of SCI format 1 is equal to 32 bits. The reserved bits are set to zero.

There is no carrier-related information from the SCI content of the V2X. The SCI can only indicate the data resource information of the current carrier, that is, the transmitting end only supports single-carrier data transmission, and does not have the capability of cross-carrier scheduling.

In order to implement carrier aggregation transmission of the sidelink link, when cross-carrier scheduling is selected, it is necessary to add carrier indication information in the control information. In this embodiment, the carrier that transmits the control information may be regarded as the first carrier of the transmitting end, and the carrier that only transmits the data is regarded as the second carrier of the transmitting end, and further, the receiving end does not have the data when receiving the data on the second carrier. The resource pool information on the carrier. Therefore, the control information on the first carrier is not only capable of indicating the information of the second carrier transmitting the data, but also indicating that the resource pool information is sent on the second carrier.

For the purpose of the foregoing carrier indication, the present embodiment may perform numbering indexing on all available carriers of the UE, and may also perform numbering indexing on the sending resource pools on the respective carriers. In the control indication information, the indication of the transmission resource pool used on the carrier and the carrier, the indication information may be an indication of display, or may be an implicit correspondence mapping indication, so that the receiving end can effectively perform the indication information. Data reception.

In addition, since the transmitting end performs data transmission on multiple carriers, the receiving end needs to identify which data is sent by which transmitting ends, so that the receiving end can perform data selection, combining, and the like processing at the physical layer or the upper layer. Need to mark which data is sent by which sender. Similarly, the transmitting end may continue to increase the identification of the information configured as the receiving end in the control information.

The following are implementation methods of embodiments of the present disclosure, each of which includes multiple instances.

Implementation method 1: Add indicator bits in the control information, and explicitly (direct) indicate carrier and resource pool information.

Example 1 of implementing method one:

The transmitting end sends data on a certain second carrier, and the UE selects the PSCCH resource on the first carrier to send the control information SCI corresponding to the data on the second carrier, and assumes that all carrier numbers available to the UE are carrier 1, carrier 2, ..., For carrier k, the k carriers are numbered, and log2(k) is rounded up to k', then the k'bit information can be used to indicate the k carriers correspondingly;

Similarly, assuming that the sending resource pool on a certain carrier is resource pool 1, resource pool 2, ..., resource pool n, the n resource pools are also numbered, and log2(n) is rounded up to n'. Then, the n'bit information can be used to indicate the n resource pools correspondingly;

Then, compared with the V2V sidelink control information defined by R14, information of (k'+n') bits needs to be added in the control information to perform carrier indication and resource pool indication.

Example 2 of implementing method one:

Similar to the example 1, the transmitting end sends data on a certain second carrier, and the UE selects the PSCCH resource on the first carrier to send the control information SCI corresponding to the data on the second carrier, and assumes that all the carrier numbers available to the UE are carrier 1, the carrier. 2, ..., carrier k, then number k (k>=m), round up log2(k) to k', then k'bit information can be used to indicate the k carriers;

However, for the same transmitting UE, if the resource pool used on the second carrier is the same resource pool as that used on the first carrier, the n'bit overhead can be saved compared with the example 1.

Compared with the V2V sidelink control information defined by R14, it is necessary to add k'bit information in the control information to perform carrier indication and resource pool indication.

Example 3 of implementing method one:

The transmitting end sends data on a certain second carrier, and the UE selects the PSCCH resource on the first carrier to send the control information SCI corresponding to the data on the second carrier, and assumes that the number of all carriers available to the UE is k.

The transmission resource pool data on the first carrier is n1, the number of resource pools on the second carrier is n2, ..., and the number of transmission resource pools on the kth carrier is nk, then the total number of transmission resource pools on all carriers is There are N=(n1+n2+...+nk), numbering the N sending resource pools, and rounding up log2(N) to N', then you can use the N'bit information to locate Indicates which transmit resource pool on which carrier to use.

Then, compared with the V2V sidelink control information defined by R14, N'bit information needs to be added to each control information to perform carrier indication and resource pool indication.

Example 4 of implementing Method One:

The transmitting end selects the first carrier and the second carrier according to the base station signaling or the pre-configuration information, and the sending UE selects the PSCCH resource sending control indication information on the first carrier, where the control indication information includes the data resource indication on all the carriers. information.

Similar to the example 1, firstly, all k carriers available to the UE are numbered, and the numbered carriers are sorted, for example, number 0 represents the first carrier, and number 1 represents the carrier 1 in the second carrier, and the second representative represents Carrier 2 and so on in the two carriers.

Again, if the default carrier aggregation has a certain order, for example, when carrier 0 and carrier 2 are used together, the indicated carrier sequence is considered to be from small to large according to the carrier number, then the possible types of all carriers used by the UE are

One

If there is no order for the carrier when the carrier aggregation is considered, the possible types of all carriers used by the UE are

One

Then, these J cases can be numbered and indexed, and rounded up to J' using log2(J), then the information of the J'bit can be used to make one-to-one correspondence with the use of the carrier;

Then, all the transmission resource pools on all the sorted carriers are numbered and indexed. If all the resource pools on all carriers have a total of n, then log2(n) is also rounded up to n', and the n' is used. The bit information may indicate a resource pool used by the transmitting UE on each carrier.

Then, compared with the V2V sidelink control information defined by R14, it is necessary to increase the information of (J'+K*n') bits for carrier indication and resource pool indication.

Example 5 of implementing method one

The transmitting end selects the first carrier and the second carrier according to the base station signaling or the pre-configuration information. FIG. 6 is a schematic diagram of transmitting only one centralized scheduling control information on the first carrier according to the cross-carrier scheduling communication according to the fifth embodiment of the present disclosure, as shown in FIG. 6. As shown, data0, data1, and the like represent respective data, and the transmitting UE selects a PSCCH resource on the first carrier to send a centralized control indication information SCI, where the control indication information includes independent scheduling data resource control indication information on all used carriers. SCI. The independent scheduling indication information SCI includes carrier indication information and resource pool indication information. The centralized control then indicates that the independent control indication in the SCI indicates that the corresponding data is transmitted on the carrier location corresponding to the SCI. FIG. 7 is a schematic structural diagram of centralized scheduling side link control indication information SCI according to Example 5 of the present disclosure.

8 is a schematic diagram of transmitting a plurality of independent control information on a first carrier when performing cross-carrier scheduling communication according to Example 5 of the present disclosure. As shown in FIG. 8, the transmitting end transmits a plurality of control indication information SCI on the first carrier, each of which The SCI includes carrier indication information or resource pool indication information of one carrier.

Example 6 of implementing method one:

The transmitting end selects the first carrier and the second carrier according to the base station signaling or the pre-configuration information, and the transmitting UE selects one resource location transmission control indication information on the first carrier, where the control indication information includes data on all carriers. Resource indication information. Similar to Example 4, if it is assumed that the transmission resource pool configuration on each carrier is the same by default, then we reduce the n'bit information configured to indicate resource pool information on each carrier as compared with Example 4.

Compared with the V2V sidelink control information defined by R14, it is necessary to add J'bit information in each control information to perform carrier indication and resource pool indication.

Example 7 of implementing method one

When the sender sends a message on multiple carriers, since the current control information SCI does not have an indication about the source information, the receiver can effectively identify the message from one sender on multiple carriers. The indication information related to the transmission source is added to the SCI on the first carrier, so that the receiving UE can determine whether to receive the packets or the like through the source information in the SCI.

Embodiment 2: The PSCCH resource on the first carrier and the corresponding indicated carrier and/or resource pool are implicitly corresponding

Example 8 of Implementation Method 2

The transmitting end sends data on a certain carrier, and the UE selects the PSCCH resource on the first carrier to send the control information SCI corresponding to the data on the second carrier, and assumes that all the carrier numbers available to the UE are carrier 1, carrier 2, ..., carrier. k a total of k carriers, the PSCCH on the first carrier is corresponding to each carrier position according to a certain correspondence relationship, for example, there are m PSCCH resources (m is greater than or equal to k), then the correspondence between the PSCCH resources and the carrier position can be set. The mod(k,m) value is the corresponding subcarrier position. When the SCI on the i-th carrier is transmitted on the first carrier, the PSCCH position corresponding to mod(k, m)=i is found and transmitted.

Secondly, it is assumed that the sending resource pool on a certain carrier is resource pool 1, resource pool 2, ..., resource pool n, and the n resource pools are also numbered, and log2(n) is rounded up to n', then The n'bit information can be used to indicate the n resource pools correspondingly;

Then, compared with the V2V sidelink control information defined by R14, the resource information indication information of n'bit needs to be added in the control information to perform the carrier indirect indication and the resource pool direct indication.

Example 9 of Implementation Method 2

The transmitting end sends data on a certain carrier, and the UE selects the PSCCH resource on the first carrier to send the control information SCI corresponding to the data on the second carrier, and assumes that all carriers available to the UE assume that all carriers available to the UE are carrier 1, carrier 2 , ..., carrier k, then the k carriers are numbered, and log2(k) is rounded up to k', then the k'bit information can be used to indicate the k carriers correspondingly;

Second, the UE selects the PSCCH resource on the first carrier to send the control information SCI corresponding to the data on the second carrier, and assumes that the sending resource pool number on a certain carrier is resource pool 1, resource pool 2, ..., resource pool n. n resource pools, then the resource location of the PSCCH on the first carrier can be associated with n resource pools, for example, there are m PSCCH resources (m>=n), then the correspondence between the PSCCH resources and the carrier location can be set to mod The (n, m) value is the corresponding resource pool. When a certain second carrier control information SCI is transmitted and the second carrier uses the resource pool i, the PSCCH location corresponding to mod(n, m)=i is searched for and transmitted;

Then, compared with the V2V sidelink control information defined by R14, the resource pool indication information of k'bit needs to be added in the control information to perform direct carrier indication and resource pool indirect indication.

Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation. Based on such understanding, portions of the technical solution of the present disclosure that contribute substantially or to the prior art may be embodied in the form of a software product stored in a storage medium (such as a read only memory (ROM, Read). -Only Memory)/Random Access Memory (RAM), including several instructions to enable a terminal device (which can be a mobile phone, computer, server, or network device) to execute the program. The methods described in the various embodiments are disclosed.

Embodiment 2

It should be noted that the terminal described in this embodiment may be the terminal described in FIG. 2, and may have a structure of a processor, a transceiver, and a memory.

According to another embodiment of the present disclosure, there is further provided a terminal, which is a transmitting end, includes: a first processor, configured to determine to send data to be transmitted on multiple carriers on an edge link; a first transceiver, Configuring to transmit at least control information on the first carrier, and transmitting only the data to be transmitted on the second carrier in the second carrier set; wherein the first carrier and the second carrier are carriers in the multiple carriers, The control information is configured to indicate the location of the data to be transmitted.

According to another embodiment of the present disclosure, a terminal is provided, comprising: a second transceiver, configured to receive data to be transmitted on multiple carriers on a sidelink by using a multi-carrier data transmission technology; The processor is configured to acquire, according to the control information on the first carrier, the to-be-transmitted data transmitted by the transmitting end on the multiple carriers, where the first carrier is a carrier in the multiple carriers, and the control information is configured to indicate The location where the data to be transmitted is located.

Embodiment 3

FIG. 9 is a structural block diagram 1 of a data transmission apparatus according to an embodiment of the present disclosure. As shown in FIG. 9, the apparatus includes:

a determining module 92, configured to determine to send data to be transmitted on multiple carriers on the side link sidelink;

The sending module 94 is connected to the determining module 92, configured to send at least control information on the first carrier, and send only the data to be transmitted on the second carrier in the second carrier set, where the first carrier and the first The two carriers are carriers in the multiple carriers, and the control information is configured to indicate a location where the data to be transmitted is located.

In an embodiment, the apparatus may be configured as a transmitting UE.

In an embodiment, the control information sent on the first carrier includes at least one of the following: indication information corresponding to the carrier where the data to be transmitted is located; and indication information corresponding to the resource pool of the carrier where the data to be transmitted is located.

FIG. 10 is a structural block diagram 2 of a data transmission apparatus according to an embodiment of the present disclosure. As shown in FIG. 10, the apparatus includes:

The receiving module 102 is configured to receive data to be transmitted on multiple carriers on the sidelink;

The obtaining module 104 is connected to the receiving module 102, and configured to acquire, according to the control information on the first carrier, the to-be-transmitted data transmitted by the transmitting end on the multiple carriers, where the first carrier is in the multiple carriers The carrier, the control information is configured to indicate a location where the data to be transmitted is located.

In an embodiment, the apparatus may be configured as a receiving UE.

Embodiment 4

According to another embodiment of the present disclosure, there is also provided a storage medium comprising a stored program, wherein the program is executed to execute the data transmission method described in the above alternative embodiment.

Embodiment 5

According to another embodiment of the present disclosure, there is also provided a processor configured to execute a program, wherein the program is executed to execute the data transfer method described in the above alternative embodiment.

a processor configured to execute the program, wherein the program executes while:

Transmitting data to be transmitted on multiple carriers on the edge link, where the transmitting end transmits at least control information on the first carrier, and only sends the to-be-transmitted data on the second carrier in the second carrier set, The first carrier and the second carrier are carriers in the multiple carriers, and the control information is configured to indicate a location where the data to be transmitted is located.

The data to be transmitted is received on the multiple carriers on the side link, where the receiving end acquires the data to be transmitted transmitted by the transmitting end on the multiple carriers according to the control information on the first carrier, where The first carrier is a carrier of the multiple carriers, and the control information is configured to indicate a location where the data to be transmitted is located.

It will be apparent to those skilled in the art that the various modules or steps of the present disclosure described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. In the above, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device for execution by the computing device, and in some cases may be performed in a different order than that illustrated herein. Or the steps described, either separately as individual integrated circuit modules, or as a plurality of modules or steps in a single integrated circuit module. As such, the disclosure is not limited to any specific combination of hardware and software.

The above description is only a preferred embodiment of the present disclosure, and is not intended to limit the disclosure, and various changes and modifications may be made to the present disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and scope of the present disclosure are intended to be included within the scope of the present disclosure.

Industrial applicability

In the embodiment of the present invention, the sending end sends the data to be transmitted on the multiple carriers on the sidelink, where the sending end sends at least the control information on the first carrier, where the control information is configured to indicate the location of the data to be transmitted, where Only the data to be transmitted is transmitted on the second carrier in the second carrier set. With the above technical solution, the location of the carrier or the location of the resource pool where the data to be transmitted is located is indicated by the control information on the first carrier, which facilitates unified management of data to be transmitted on multiple second carriers, and is implemented on the sidelink. Cross-carrier scheduling solves the problem that cross-carrier scheduling on sidelink cannot be implemented in related technologies.

Claims

A data transmission method includes:

The transmitting end sends the data to be transmitted on the multiple carriers on the side link, where the sending end sends at least the control information on the first carrier, and only sends the to-be-transmitted transmission on the second carrier in the second carrier set. Data, wherein the first carrier and the second carrier are carriers in the multiple carriers, and the control information is configured to indicate a location where the data to be transmitted is located.
The method according to claim 1, wherein the control information sent on the first carrier comprises at least one of: indication information corresponding to a carrier where the data to be transmitted is located; and a carrier of the data to be transmitted Indicates the information corresponding to the resource pool.
The method according to claim 1, wherein the control information carries resource identification information configured to indicate the data to be transmitted, wherein data on a plurality of carriers in a carrier aggregation sent by the transmitting end has Same resource identification information.
The method of claim 1 wherein the location of the first carrier in the plurality of carriers is determined by one of:

Pre-configured by the sender;

Determined according to the signaling indication of the base station;

Determining, by the sending end, that the carrier corresponding to the synchronization source selected by the sending end is the first carrier;

Determining, by using the carrier used by the serving cell where the sending end resides, the first carrier;

Determining, according to the resource pool selection policy, a transmission resource pool, and determining that the carrier where the resource pool is located is the first, according to the resource pool selection policy, the pre-configuration or the base station configured the transmission resource pool list and the carrier list corresponding to the sending resource pool list. The carrier, wherein the resource pool selection policy includes at least one of the following: a random selection, calculated according to the identifier information of the sender, calculated according to the geographic location of the sender, and selected according to the type of the sender.
The method of claim 1, wherein the control information transmitted on the first carrier comprises: one centralized scheduling information or a plurality of independent scheduling information.
The method according to claim 5, wherein, when the control information sent on the first carrier is a plurality of the independent scheduling information, the multiple independent scheduling information is located on one transmission time interval or multiple transmission time intervals. on.
The method according to claim 5, wherein, when the control information sent on the first carrier is a centralized scheduling information, the control information is configured to indicate the data to be transmitted on all used carriers of the transmitting end. Data resource information.
The method according to claim 5, wherein, when the control information sent on the first carrier is a plurality of independent scheduling information, each of the control information is configured to indicate data resource information of the data to be transmitted on a unique carrier. .
The method according to claim 2, wherein the indication information corresponding to the carrier on which the data to be transmitted is located is a first number index of all available carriers on the edge link of the transmitting end, and each of the following manners is determined. The first number index of the available carriers:

Pre-configured;

According to the signaling indication of the base station.
The method according to claim 2, wherein the indication information corresponding to the resource pool of the carrier where the data to be transmitted is located is a second number index of all the transmission resource pools of the transmitting end on the carrier, by using the following manner One determines a second numbered index for each of the sending resource pools:

Pre-configured;

According to the signaling indication of the base station.
The method according to claim 2, wherein the indication information corresponding to the carrier where the data to be transmitted is located is a third number index of the transmission resource pool of all the carriers on the side link of the transmitting end, wherein The third number index determines a carrier location used by the sending end and configuration information of a used sending resource pool, and determines a third number index of each of the sending resource pools by using one of the following manners:

Pre-configured; according to the signaling indication of the base station.
The method according to claim 2, wherein the indication manner of the indication information included in the control information comprises one of the following:

Direct indication mode, adding an indication field to the control information for indication;

The indirect indication mode indicates that the physical edge link on the first carrier controls the correspondence between the channel resource location and the corresponding indicated carrier and/or resource pool.
The method of claim 12, wherein

The direct indication is used for the carrier location corresponding to the carrier where the data to be transmitted is located, and the indirect indication is used for the resource pool information of the carrier where the data to be transmitted is located;

Or the indirect indication is used for the carrier location corresponding to the carrier where the data to be transmitted is located, and the direct indication is used for the resource pool information of the carrier where the data to be transmitted is located.
A data transmission method includes:

The receiving end receives the data to be transmitted on the multiple carriers on the side link, where the receiving end acquires the data to be transmitted transmitted by the transmitting end on the multiple carriers according to the control information on the first carrier, where The first carrier is a carrier of the multiple carriers, and the control information is configured to indicate a location where the data to be transmitted is located.
The method according to claim 14, wherein the control information on the first carrier comprises at least one of: indication information corresponding to a carrier where the data to be transmitted is located; and a resource pool of a carrier where the data to be transmitted is located Corresponding indication information.
A data transmission device comprising:

a determining module configured to determine to transmit data to be transmitted on multiple carriers on the side link;

a sending module, configured to send at least control information on the first carrier, and send only the data to be transmitted on the second carrier in the second carrier set, where the first carrier and the second carrier are The carrier of the plurality of carriers, the control information is configured to indicate a location where the data to be transmitted is located.
The apparatus according to claim 16, wherein the control information sent on the first carrier comprises at least one of: indication information corresponding to a carrier where the data to be transmitted is located; and a carrier of the data to be transmitted Indicates the information corresponding to the resource pool.
A data transmission device comprising:

a receiving module, configured to receive data to be transmitted on multiple carriers on the edge link;

An acquiring module, configured to acquire, according to the control information on the first carrier, the to-be-transmitted data that is sent by the transmitting end on the multiple carriers, where the first carrier is a carrier in the multiple carriers, The control information is configured to indicate the location of the data to be transmitted.
The device according to claim 18, wherein the control information on the first carrier comprises at least one of: indication information corresponding to a carrier where the data to be transmitted is located; and a resource pool of a carrier where the data to be transmitted is located Corresponding indication information.
A terminal comprising:

a first processor configured to determine to transmit data to be transmitted on multiple carriers on an edge link;

The first transceiver is configured to send at least control information on the first carrier, and only send the data to be transmitted on the second carrier in the second carrier set;

The first carrier and the second carrier are carriers in the multiple carriers, and the control information is configured to indicate a location where the data to be transmitted is located.
The terminal according to claim 20, wherein the control information on the first carrier comprises at least one of: indication information corresponding to a carrier where the data to be transmitted is located; and a resource pool of a carrier where the data to be transmitted is located Corresponding indication information.
A terminal comprising:

a second transceiver configured to receive data to be transmitted on multiple carriers on the side link;

The second processor is configured to acquire, according to the control information on the first carrier, the data to be transmitted that is sent by the sending end on the multiple carriers, where the first carrier is a carrier in the multiple carriers, The control information is configured to indicate a location where the data to be transmitted is located.
The terminal according to claim 22, wherein the control information on the first carrier comprises at least one of the following: indication information corresponding to the carrier where the data to be transmitted is located; and a resource pool of the carrier where the data to be transmitted is located Corresponding indication information.
A storage medium comprising a stored program, wherein the program is executed to perform the data transmission method according to any one of the preceding claims 1 to 13.
A storage medium comprising a stored program, wherein the program is executed to execute the data transmission method according to claim 14 or 15.
A processor configured to execute a program, wherein the program is executed to perform the data transmission method of any of the above claims 1 to 13.
A data transmission device comprising:

a memory configured to save a tunnel authorization information processing program;

And a processor configured to execute the program, wherein the program is executed to perform the data transmission method according to any one of claims 1 to 13.
A data transmission device comprising:

a memory configured to save a tunnel authorization information processing program;

And a processor configured to execute the program, wherein the program executes the data transmission method of claim 14 or 15.