WO2017128176A1 - Data transmission method, device and system - Google Patents

Abstract

Provided are a data transmission method, device and system. The method comprises the following steps: a first device transmits, to a second device, scheduling assignment information, the scheduling assignment information comprising time domain transmission resource indication information corresponding to transmission number indication information; the first device transmits data to the second device by means of a time domain transmission resource determined according to the transmission number indication information and the time domain transmission resource indication information corresponding thereto; the second device receives the scheduling assignment information transmitted by the first device; the second device determines a time domain transmission resource according to the time domain transmission resource determined according to the transmission number indication information and the time domain transmission resource indication information corresponding thereto; and the second device receives, by means of the time domain transmission resource, the data transmitted by the first device. The invention supports a variable transmission number, thereby favorably increasing capacity or improving transmission reliability, and enhancing system performance.

Description

Data transmission method, device and system Technical field

The present invention relates to the field of communications technologies, and in particular, to a data transmission method, device, and system.

Background technique

With the popularity of intelligent terminals, the number of intelligent terminals in the network is experiencing explosive growth. In order to better meet user needs and improve the efficiency of information interaction, Device-to-Device (D2D) communication emerges as the times require. .

In Long Term Evolution (LTE) D2D communication, there are two physical layer transport channels: a communication communication channel and a discovery Discovery channel. The former uses Scheduling Assignment (SA) to indicate a variable size physical resource and a variable modulation and coding format of the data portion, while the latter has no SA and only supports fixed length data. In the LTE D2D communication channel, the SA is transmitted in the SA resource pool, and the data is transmitted in the data resource pool. The SA is fixedly transmitted twice and the data is transmitted four times. The Time Resource Pattern of Transmission (T-RPT) included in the SA indicates the location of each transmission of the data in the time domain. The user equipment on the receiving side correctly receives the SA in the SA resource pool, and receives data according to the time domain location information indicated by the SA to the corresponding time domain resource in the data resource pool.

However, in some D2D scenarios, it is not desirable to have a fixed number of data transfers four times. For example, a Vehicle-to-Vehicle (V2V) scenario, the vehicle broadcasts a safety message to surrounding vehicles. On the one hand, for ordinary security messages, it may not need to be transmitted four times, one or two times of transmission, and the vacated time domain resources can be used for other vehicles to broadcast security messages, which is beneficial to increase capacity. On the other hand, for some important security messages or security messages generated by important vehicles, more transmissions are required in order to improve transmission reliability.

Therefore, in the prior art, the number of transmissions is fixed to four times, and the number of variable transmissions is not supported, which is disadvantageous for improving capacity or improving transmission reliability. In addition, the seven-bit T-RPT is used to indicate the time domain transmission resource, and only 128 time domain modes can be indicated. When there are many user equipments, the half-duplex problem is easy to occur, that is, the user equipment of the same T-RPT is selected. Always use the same time domain resources to send information, you can not receive each other's information, which has a certain impact on system performance.

Summary of the invention

The embodiment of the invention provides a data transmission method, device and system, which can support variable transmission times, is beneficial to increase capacity or improve transmission reliability, and improve system performance.

A first aspect of the embodiments of the present invention provides a data transmission method, including:

The first device sends the scheduling allocation information to the second device, where the scheduling allocation information includes time domain transmission resource indication information corresponding to the transmission frequency indication information;

The first device sends data to the second device by using a time domain transmission resource determined by the transmission frequency indication information and the time domain transmission resource indication information corresponding thereto.

In a first possible implementation manner of the first aspect of the first aspect of the present disclosure, the transmission quantity indication information is determined by the first device, and the scheduling allocation information further includes the transmission frequency indication information.

In a second possible implementation manner of the first aspect of the embodiment, the number of times of transmission indication information is determined by pre-configuration information of the first device.

In a third possible implementation manner of the first aspect of the embodiment of the present disclosure, before the sending, by the first device, the scheduling allocation information to the second device, the method further includes:

The first device receives a notification message that is sent by the network side device and carries the scheduling allocation information, where the notification message is a broadcast message, a Radio Resource Control (RRC) dedicated signaling, and a media access control (MAC). One or more of Control Element (CE) information and physical layer scheduling signaling.

With reference to the third possible implementation manner of the first aspect of the embodiment of the present invention, in a fourth possible implementation manner of the first aspect of the embodiments of the present disclosure, the transmission frequency indication information is determined by the broadcast message.

With reference to the third possible implementation manner of the first aspect of the embodiments of the present invention, in a fifth possible implementation manner of the first aspect of the embodiments of the present disclosure, the transmission frequency indication information is used by the RRC dedicated signaling, Determining one or more of the MAC CE information and the physical layer scheduling signaling, where the scheduling allocation information further includes the transmission frequency indication information.

With reference to the second to fifth possible implementation manners of the first aspect of the embodiments of the present invention, in a sixth possible implementation manner of the first aspect of the embodiments, the transmission times indication information is used by the broadcast message. And determining, by the multiple configuration information of the first device, the RRC dedicated signaling, the MAC CE information, and the physical layer scheduling signaling, where the scheduling allocation information further includes the transmission frequency indication information .

A second aspect of the embodiments of the present invention provides a data transmission method, including:

The network side device determines scheduling allocation information, where the scheduling allocation information includes time domain transmission resource indication information corresponding to the transmission quantity indication information;

The network side device sends a notification message that carries the scheduling allocation information to the first device, where the notification message is one or more of a broadcast message, RRC dedicated signaling, MAC CE information, and physical layer scheduling signaling. .

In a first possible implementation manner of the second aspect of the embodiment of the present invention, the transmission frequency indication information is determined by the broadcast message.

In a second possible implementation manner of the second aspect of the embodiments of the present disclosure, the transmission frequency indication information is one of the RRC dedicated signaling, the MAC CE information, and the physical layer scheduling signaling. In a plurality of determinations, the scheduling allocation information further includes the transmission frequency indication information.

A third aspect of the embodiments of the present invention provides a data transmission method, including:

The second device receives scheduling allocation information sent by the first device, where the scheduling allocation information includes time domain transmission resource indication information corresponding to the transmission frequency indication information;

Determining, by the second device, the time domain transmission resource according to the time-domain transmission resource determined by the transmission frequency indication information and the time domain transmission resource indication information corresponding thereto;

The second device receives data sent by the first device by using the time domain transmission resource.

In a first possible implementation manner of the third aspect of the embodiment, the information indicating the number of times of the transmission is the pre-configuration information of the second device or a broadcast message sent by the network side device.

In a second possible implementation manner of the third aspect of the embodiment, the scheduling allocation information further includes the transmission frequency indication information.

With reference to the second or third possible implementation manner of the third aspect of the embodiments of the present invention, in a third possible implementation manner of the third aspect of the embodiments of the present disclosure, the second device is configured according to the number of transmission times The time domain transmission resource determined by the information and the time domain transmission resource determined by the corresponding time domain transmission resource indication information includes:

Determining, by the second device, the number of transmissions according to the transmission quantity indication information;

The second device determines the time domain transmission resource according to the number of transmissions and the time domain transmission resource indication information corresponding to the transmission number indication information.

A fourth aspect of the embodiments of the present invention provides a data transmission method, including:

The first device sends scheduling allocation information to the second device, where the scheduling allocation information includes a reused scheduling allocation identifier (SA ID) domain, where the scheduling allocation information indicates a time domain resource;

The first device scrambles data by using a bit corresponding to part or all of the reused scheduling allocation identifier field in the scheduling allocation information;

The first device sends the scrambled data to the second device by using the time domain resource.

In a first possible implementation manner of the fourth aspect of the embodiment of the present invention, the bit corresponding to the part or all of the reused scheduling allocation identifier field is used to indicate the transmission times indication information and/or some or all of the time domains corresponding thereto. Transfer resource indication information.

A fifth aspect of the embodiments of the present invention provides a data transmission method, including:

The second device receives scheduling allocation information sent by the first device, where the scheduling allocation information includes a reused scheduling allocation identifier field, where the scheduling allocation information indicates a time domain resource;

Receiving, by the second device, the scrambled data sent by the first device according to the time domain resource;

The second device descrambles the scrambled data according to part or all of the reused scheduling allocation identifier field.

In a first possible implementation manner of the fifth aspect of the embodiment, the bit corresponding to the part or all of the reused scheduling allocation identifier field is used to indicate the transmission quantity indication information and/or some or all of the time domains corresponding thereto. Transfer resource indication information.

A sixth aspect of the embodiments of the present invention provides a data transmission method, including:

Receiving, by the first device, scheduling information sent by the network side device, where the scheduling information indicates a time domain resource in a current transmission period;

The first device sends data to the second device by using the time domain resource, and the resource pool to which the time domain resource belongs supports the first communication mode;

Sending, by the first device, scheduling allocation information to the second device, where the scheduling allocation information indicates the time domain resource;

Determining, by the first device, a time domain resource in a subsequent transmission period according to the time domain resource and the cell identity information, where the cell identity information is obtained by the first device from the network side device in advance, and the subsequent transmission cycle Includes at least one transmission cycle.

A seventh aspect of the embodiments of the present invention provides a data transmission method, including:

The second device receives scheduling allocation information sent by the first device, where the scheduling allocation information indicates a time domain resource in a current transmission period, and the resource pool to which the time domain resource belongs supports the first communication mode;

Receiving, by the second device, the data sent by the first device by using the time domain resource;

The second device determines the time domain resource in the subsequent transmission period according to the time domain resource and the cell identity information, where the cell identity information is obtained by the first device from the network side device in advance, and the subsequent transmission cycle Includes at least one transmission cycle.

An eighth aspect of the embodiments of the present invention provides a data transmission method, including:

The first device sends the scheduling allocation information to the second device, where the scheduling allocation information includes scheduling allocation identifier information, where the scheduling allocation information indicates a time domain resource in a current transmission period, and the resource pool to which the time domain resource belongs supports Two communication modes;

Transmitting, by the first device, data to the second device by using the time domain resource;

The first device determines a time domain resource in a subsequent transmission period according to the time domain resource and the scheduling allocation identifier information, where the subsequent transmission period includes at least one transmission period.

A ninth aspect of the embodiments of the present invention provides a data transmission method, including:

The second device receives scheduling allocation information sent by the first device, where the scheduling allocation information includes scheduling allocation identifier information, where the scheduling allocation information indicates a time domain resource in a current transmission period, and the resource pool to which the time domain resource belongs supports Two communication modes;

Receiving, by the second device, the data sent by the first device by using the time domain resource;

The second device determines a time domain resource in a subsequent transmission period according to the time domain resource and the scheduling allocation identifier information, where the subsequent transmission period includes at least one transmission period.

A tenth aspect of the embodiments of the present invention provides a first device, including:

An information sending unit, configured to send scheduling allocation information to the second device, where the scheduling allocation information includes time domain transmission resource indication information corresponding to the transmission frequency indication information;

And a data sending unit, configured to send data to the second device by using a time domain transmission resource determined by the transmission frequency indication information and the time domain transmission resource indication information corresponding thereto.

The first device provided by the tenth aspect of the present invention is used to implement the data transmission method provided by the first aspect of the present invention. For the specific implementation process, reference may be made to the first aspect, and details are not described herein again. Optionally, the first device provided by the tenth aspect of the embodiments of the present invention is further configured to implement the data transmission method provided by the fourth aspect, the sixth aspect, or the eighth aspect of the embodiment of the present invention.

An eleventh embodiment of the present invention provides a network side device, including:

An information determining unit, configured to determine scheduling allocation information, where the scheduling allocation information includes time domain transmission resource indication information corresponding to the transmission quantity indication information;

a message sending unit, configured to send a notification message carrying the scheduling allocation information to the first device The notification message is one or more of a broadcast message, RRC dedicated signaling, MAC CE information, and physical layer scheduling signaling.

The network side device provided in the eleventh embodiment of the present invention is used to implement the data transmission method in the second aspect of the embodiment of the present invention. For the specific implementation process, refer to the second aspect, and details are not described herein again.

A twelfth aspect of the embodiments of the present invention provides a second device, including:

An information receiving unit, configured to receive scheduling allocation information sent by the first device, where the scheduling allocation information includes time domain transmission resource indication information corresponding to the transmission frequency indication information;

a resource determining unit, configured to determine a time domain transmission resource according to the time domain transmission resource determined by the transmission frequency indication information and the time domain transmission resource indication information corresponding thereto;

And a data receiving unit, configured to receive data sent by the first device by using the time domain transmission resource.

The second device provided in the twelfth aspect of the embodiment of the present invention is used to implement the data transmission method in the third aspect of the embodiment of the present invention. For the specific implementation process, refer to the third aspect, and details are not described herein again. Optionally, the second device provided by the twelfth aspect of the embodiment of the present invention is further configured to implement the data transmission method provided by the fifth aspect, the seventh aspect, or the eighth aspect of the embodiment of the present invention.

In the embodiment of the present invention, the scheduling allocation information is sent to the second device by using the first device, and the scheduling allocation information includes time domain transmission resource indication information corresponding to the transmission frequency indication information; the first device passes the indication information by the transmission number and The time domain transmission resource determined by the corresponding time domain transmission resource indication information sends the data to the second device; the second device receives the scheduling allocation information sent by the first device; and the second device according to the transmission frequency indication information and the time domain transmission corresponding thereto The resource indication information determines the time domain transmission resource; the second device receives the data sent by the first device by using the time domain transmission resource, thereby implementing the variable transmission frequency transmission of the data, thereby improving the channel capacity or improving the transmission reliability, and improving the system performance. .

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings to be used in the embodiments will be briefly described below. Obviously, the drawings in the following description are only some of the present invention. For the embodiments, those skilled in the art can obtain other drawings according to the drawings without any creative work.

1 is a network architecture diagram of D2D communication under an LTE system architecture;

2 is a schematic flowchart of a data transmission method according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a first device according to an embodiment of the present disclosure;

FIG. 4 is a schematic structural diagram of a network side device according to an embodiment of the present disclosure;

FIG. 5 is a schematic structural diagram of a second device according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of another first device according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of another network side device according to an embodiment of the present disclosure;

FIG. 8 is a schematic structural diagram of another second device according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

Referring to FIG. 1 , a network architecture diagram of D2D communication in an LTE system architecture includes user equipments UE1, UE2, UE3, and a base station. In actual application, a base station includes multiple user equipments in coverage, for ease of understanding, FIG. 1 Only three user devices are used for the example. It can be seen from FIG. 1 that all three user equipments can directly communicate with the base station, and in D2D communication, three user equipments can also communicate with each other. In the process of communicating between user equipments, communication may be performed in a multicast manner or in a broadcast manner. The user equipment may include a mobile phone, a tablet (Pad), a smart wearable device (eg, a watch, a wristband), and the like having a communication function. Under the LTE D2D communication channel, the SA is transmitted in the SA resource pool, and the data is transmitted in the data resource. The SA is fixedly transmitted twice and the data is transmitted four times. The T-RPT containing the transmission in the SA indicates the location of each transmission of the data in the time domain. The user equipment on the receiving side correctly receives the SA in the SA resource pool, and receives data according to the time domain location information indicated by the SA to the corresponding time domain resource in the data resource pool. The fixed number of transmissions is not conducive to improving capacity or improving transmission reliability, and has a certain impact on system performance.

In order to solve the disadvantages of the fixed transmission times in the prior art, the embodiments of the present invention provide a data transmission method, device, and system, which support variable transmission times, and are advantageous for improving capacity or improving transmission reliability, and improving system performance.

The embodiment of the present invention can be applied to the D2D communication scenario shown in FIG. 1 , but is not limited to this scenario. For example, it can also be applied to a scenario of a car network. Specifically, the present invention can be applied to a base station, a roadside unit, and a A scenario of communication between moving vehicles, non-motorized vehicles, pedestrians, and other communication devices on the road. Further, the embodiment of the present invention can also be applied to an Internet of Things scenario, and specifically, can be applied to a scenario of communication between smart home appliances.

The first device and the second device in the embodiment of the present invention are all user equipments, and include not only the user equipments described in FIG. 1 but also electronic vehicles, non-motor vehicles, other communication devices on the road, smart home appliances, and the like. device. The first device is a transmitting side user equipment, and the second device is a receiving side user equipment. The network side device in the embodiment of the present invention is a base station device in a D2D communication scenario, and may also be a roadside unit in a car networking scenario.

FIG. 2 is a schematic flowchart of a data transmission method according to an embodiment of the present invention. As shown in FIG. 2, the method provided by the embodiment of the present invention may include the following content of 101-105.

101. The first device sends scheduling allocation information to the second device, where the scheduling allocation information includes time domain transmission resource indication information corresponding to the transmission frequency indication information.

Specifically, before the first device sends data, the first device needs to determine the number of times of data transmission and the time domain transmission resource to be occupied. The data may be transmitted by the first device to the base station to which the first device belongs, or may be transmitted by the first device to other user equipments in the coverage of the base station. The embodiment of the present invention mainly introduces the latter. The number of times the data is transmitted is indicated by the number of transmission indications. The transmission number indication information may indicate m different values, denoted as x ₁ , x ₂ , . . . , x _m , and each value corresponds to one transmission number, denoted as y ₁ , y ₂ , .. .,y _m . Each type of transmission indication information corresponds to a time domain transmission resource indication information, and when the value of the transmission frequency indication information is x _i (i=1, 2, . . . , m), the time domain transmission corresponding to the transmission frequency indication information The resource indication information indicates different time domain transmission resources whose transmission times are y _i in the preset resource pool period.

In a first possible implementation manner, the first device autonomously determines the number of times of data transmission and the time domain transmission resource to be occupied, that is, the number of transmission times indication information of the first device autonomously determined data and the number of transmissions The time domain transmission resource indication information corresponding to the indication information. The possible implementation manner corresponds to the second communication mode in the prior art, that is, the time domain location of the transmission is determined by the transmitting side user equipment. In the embodiment of the present invention, the transmitting side user equipment determines not only the time domain resources to be transmitted but also the number of data transmissions.

Specifically, the first device determines the number of times of data transmission according to certain transmission rules. Certain transmission rules may include, but are not limited to, a priority rule, a random rule, and the like, which are not limited herein. So-called a priority rule, that is, the first device determines the number of times of data transmission according to the priority of the data, and can be regarded as more important data for the data with higher priority, and needs to be transmitted several times for the first device. The data can be reliably transmitted to other user equipments; for lower priority data, it can be regarded as ordinary data, and it does not need to be transmitted four times, only one or two times, so that some time domain resources are vacated. The vacated time domain resource may be used by the first device to transmit data to other user equipments or receive data sent by other user equipments, thereby facilitating channel capacity enhancement. The so-called random rule, that is, the first device randomly determines the number of transmissions of data. The first device randomly determines the time domain transmission resource indication information corresponding to the transmission frequency indication information, that is, the first device randomly selects a certain resource or some resources as the time domain corresponding to the transmission frequency indication information. Transfer resources.

The scheduling allocation information includes the transmission quantity indication information and the time domain transmission resource indication information corresponding to the transmission frequency indication information, when the first device autonomously determines the scheduling allocation information, according to a first possible implementation manner. The first device sends the scheduling allocation information to the second device.

The first device may further determine, according to the pre-configuration information of the first device, the transmission times indication information, where the pre-configuration information may be information that includes the number of transmissions of the factory default configuration of the first device, or The network side device is configured to include the number of transmission times configured by the user equipment in the coverage of the network side device. In this case, it can be understood that the second device or other user equipment can learn the indication information of the number of times to be transmitted, and therefore the scheduling allocation information does not include the indication information of the number of transmissions, and only includes the transmission. The time domain transmission resource indication information corresponding to the number indication information.

In a second possible implementation manner, the first device receives a notification message that is sent by the network side device and carries scheduling allocation information, where the notification message is a broadcast message, RRC dedicated signaling, MAC CE information, and physical layer scheduling information. One or more of the orders. The network side device allocates resources for the user equipment in the D2D communication, and may be a base station device, a roadside unit, or the like in the D2D communication. The network side device determines the transmission frequency indication information and the time domain transmission resource indication information corresponding to the transmission frequency indication information. The transmission number indication information determined by the network side device may be placed in one or more of the broadcast message, the RRC dedicated signaling, the MAC CE information, and physical layer scheduling signaling, so that the network The side device informs the first device of the transmission frequency indication information by transmitting the information. The possible implementation manner corresponds to the first communication mode in the prior art, that is, the time domain location of the transmission is determined by the base station, and is notified to the transmitting side user equipment. In the embodiment of the invention The base station not only determines the time domain resource to be transmitted, but also determines the number of times the data is transmitted, and notifies the transmitting side user equipment.

Specifically, the network side device determines the number of times of data transmission according to the priority of the data and/or the network resource. Optionally, the network side device determines, according to the priority of the data, the number of times of data transmission, and the data with higher priority can be regarded as more important data, and needs to be transmitted several times, so that the first device can be The data is reliably transmitted to other user equipments; for lower priority data, it can be regarded as ordinary data, and it does not need to be transmitted four times, and only needs to be transmitted once or twice, thus vacating a part of the time domain resources. The vacated time domain resource can be used by the first device to transmit data to other user equipments or receive data sent by other user equipments, thereby facilitating channel capacity enhancement. Optionally, the network side device determines the number of times of data transmission according to the category of the data, where the network side device stores a correspondence table between the data category and the number of transmissions, and the network side device determines the data transmission according to the table lookup. frequency. Optionally, the network side device determines the number of times of data transmission according to the congestion condition of the D2D communication channel, and may appropriately increase the number of transmissions in the case of unblocked, and may reduce the number of transmissions appropriately in case of congestion, as the case may be. Optionally, the network side device determines the number of times of data transmission according to the utilization rate of the time domain transmission resource, and may appropriately increase the number of transmissions when the utilization rate is low, and may appropriately reduce the transmission times when the utilization rate is high. Specific circumstances. Optionally, the network side device determines the number of times of data transmission according to the priority of the data and the network resource, and the network resource may be one or more of a congestion condition of the D2D communication channel and a utilization rate of the time domain transmission resource. The network side device determines, according to a preset scheduling algorithm, time domain transmission resource indication information corresponding to the transmission quantity indication information. The preset scheduling algorithm is determined by the system configuration information of the network side device, and the specific scheduling algorithm is not limited herein.

According to the second possible implementation manner, if the number of transmission indication information is placed in the broadcast message, after the network side device sends the broadcast message, the user equipments in the coverage of the network side device are all The transmission number indication information may be obtained according to the broadcast message, and the scheduling allocation information sent by the first device to the second device does not include the transmission frequency indication information, including the number of transmissions The time domain transmission resource indication information corresponding to the indication information. If the transmission number indication information is placed in one or more of the RRC dedicated signaling, the MAC CE information, and the physical layer scheduling signaling, the second device is not clear The transmission times indication information, the scheduling allocation information that is sent by the first device to the second device includes the transmission frequency indication information and time domain transmission resource indication information corresponding to the transmission frequency indication information.

The transmission number indication information determined by the network side device is indicated by a preset transmission frequency indication bit, and the time domain transmission resource indication information is indicated by a preset time domain transmission resource indication bit. The preset transmission number indication bit and the preset time domain transmission resource indication bit are some bits in the SA.

In a possible implementation manner, the number of transmission indication information is represented by two preset bits of the number of transmission times, and the two bits may represent four values, that is, the above m takes 4, indicating four types. Different transmission times, such as 1, 2, 4, 8. Optionally, 00 indicates that the number of transmissions is 1, 01 indicates that the number of transmissions is 2, 10 indicates that the number of transmissions is 4, and 11 indicates that the number of transmissions is 8. The preset transmission frequency indication bit may be an extra two bits added in the SA, or may use the original two bits in the SA, for example, the original 8-bit SA ID field in the SA, in which case two bits can be used. The first transmission number indication bit is used to indicate the transmission frequency indication information, and which two bits are specifically used are not limited herein.

In the prior art, the 8-bit SA ID field in the SA can be used to scramble the corresponding data on the one hand, and filter related data on the other hand on the receiving side. In the embodiment of the present invention, the SA ID is no longer available, so it can no longer be used by the receiving side user equipment to filter related data, but is used to indicate information such as the number of transmission times indication information, but the SA ID field corresponding to the original bearer SA ID corresponds to The bits of the location can still be used to initialize the corresponding data scrambled registers for scrambling. Further, the number of bits of the SA ID field is not limited to 8 bits, and may include more bits. In this implementation, each value corresponds to a number of transmissions, and the first device determines the number of times of data transmission according to the value corresponding to the preset transmission number indication bit.

In another possible implementation manner, the above m takes 4, indicating four different transmission times, and the first three values x ₁ , x ₂ , and x ₃ respectively indicate that the number of transmissions is 1, 2, and 4, because these 3 The number of transmissions is relatively common, and general data can use these transmission times. For more important data, there are fewer opportunities, but the importance is higher, so it can be transmitted more times, such as 8 times, 16 times, and so on. Then x ₄ represents more than 4 transmissions, which may include 8 times and 16 times, or even more times, that is, 11 not only indicates that the number of transmissions is 8, but also indicates that the number of transmissions is 16, and so on. In this implementation, each value corresponds to at least one transmission number, and the first device determines the number of times of data transmission according to the relationship list corresponding to the preset transmission number indication bit and the relationship number corresponding to the number of transmissions.

In another possible implementation manner, the transmission frequency indication information may indicate that different transmission times are set to A, A={x1, x2, . . . , xn}, for a total of n different transmission times, and in the SA. Only m types (m <= n) of different transmission times can be indicated, and which of the n types can be pre-configured. Optionally, the configuration is performed by a base station device or a roadside unit or some user equipment, and may be configured by using a base station device or a roadside unit or some user equipment to broadcast system messages or send dedicated signaling. The signaling indicates which of the n different transmission times the user equipment is to use. In this implementation manner, the first device determines the number of times of data transmission according to the pre-configuration information and in combination with the preset transmission times indicator bit.

The time domain transmission resource indication information is indicated by the preset time domain transmission resource indication bit, and the preset time domain transmission resource indication bit may be an extra bit added in the SA, and the original bit in the SA may also be utilized. Bit, such as the original 7-bit T-PRT in the SA.

102. The first device sends data to the second device by using a time domain transmission resource determined by the transmission frequency indication information and the time domain transmission resource indication information corresponding thereto.

The time domain transmission resource indication information corresponding to the transmission quantity indication information indicates a time domain transmission resource occupied by the data, so the first device may according to the transmission quantity indication information and the time domain corresponding thereto The transmission resource indication information determines a time domain transmission resource occupied by the data, that is, determines which subframes the data occupies in the preset resource pool period.

First, the first device calculates, according to the transmission quantity indication information and the preset resource pool period, how many different time domain manners the number of transmissions indicated by the transmission quantity indication information is in the preset resource pool period. (pattern). For example, suppose the preset resource pool period includes 40 subframes. When the number of transmissions is one, there are 40 different time domain patterns; when the number of transmissions is two, there are a total of C ₄₀ ² = 780 different times. Field pattern. The first device calculates, according to the number of bits of the preset time domain transmission resource indication bit, how many time domain patterns are present, and if the preset time domain transmission resource indication bit is a 7-bit T-PRT, then there are 2 ⁷ = 128 time domain patterns. When the number of transmissions is one, 128 time domain patterns can represent 40 time domain patterns, and then the first device selects 40 time domain patterns from 128 time domain patterns according to the time domain transmission resource indication information, and The subframes occupied by the selected 40 time domain patterns are determined as the time domain transmission resources. When the number of transmissions is 2, the first device determines the subframe occupied by the 128 time domain patterns as the time domain transmission resource.

Further, since the 128 time domain patterns cannot represent the first number of 780 time domain patterns when the number of transmissions is 2, the number of bits of the preset time domain transmission resource indication bits may be extended. So that it can represent a greater number of different time domain patterns. For example, the preset resource pool period is 20 subframes, and the number of transmissions is 4 times, then there are C ₂₀ ⁴ = 4845 time domain patterns, which need to be represented by 13 bits, in the original 7-bit T-PRT basis. 6 bits are also needed, and an additional 6 bits may be additionally added in the SA, or 6 bits in the original Timing Advance (TA) field in the SA are used together as the preset time domain transmission resource indication. Bit indicating the time domain transmission resource indication information. If the preset resource pool period is 40 subframes and the number of transmissions is 4 times, then there are C ₄₀ ⁴ = 91390 time domain patterns, which need 17 bits to represent, based on the original 7-bit T-PRT. 10 bits are required, and 10 additional bits can be additionally added to the SA, or 6 bits in the original TA field in the SA, and 4 bits in the original 8 bits of the SA in the SA are used to intercept the 4 bits. Presetting a time domain transmission resource indication bit, indicating the time domain transmission resource indication information.

Taking the preset resource pool period as 40 ms as an example, a more specific description is made, which should be noted, including but not limited to. When the number of transmissions is 1 time, there are 40 different time domain patterns. When the number of transmissions is 2, there are 780 different time domain patterns. When the number of transmissions is 4, there are a total of 91,390 different time domain patterns. For 8 o'clock, there are 76,904,685 different time domain patterns. The 17-bit time domain transmission resource indication information may indicate a total of 131072 different time domain patterns. When the number of transmission indications indicates that the number of transmissions is one, 40 different indications in the time domain transmission resource indication information may be used to indicate all 40 different time domain patterns with the number of transmissions of 1, and the remaining indications may be omitted, or Reserved for future expansion, or used to indicate other information. The same is true for the case where the number of transmissions is 2 times and 4 times, and all of the different time domain patterns can be indicated by the 17-bit time domain transmission resource indication information. For the case where the number of transmissions is 8 times, a part of all the time domain patterns whose transmission times are 8 times may be indicated by the 17-bit time domain transmission resource indication information, for example, the number may be 131072, or less, and some are not. Instructions used may be omitted, or reserved for future expansion, or used to indicate other information.

It can be seen that the embodiment of the present invention provides a rich time domain pattern and can indicate multiple time domain transmission resources.

Specifically, after the first device determines the time domain transmission resource, the first device sends data to the second device by using the time domain transmission resource. The scheduling allocation information in step 101 may be transmitted through the time domain transmission resource, or may be transmitted through other transmission resources, including but not limited thereto.

It should be noted that, in a possible implementation manner, the first device sends the scheduling allocation information and data to the second device simultaneously; in another possible implementation manner, the first The device first sends the scheduling allocation information to the second device, and then sends the data to the second device. In the specific implementation process, one of the two implementation methods can be taken, and the specific one is not limited herein.

103. The second device receives, by the first device, the scheduling allocation information.

104. The second device determines a time domain transmission resource according to the time domain transmission resource determined by the transmission frequency indication information and the time domain transmission resource indication information corresponding thereto.

Specifically, the second device, when receiving the scheduling allocation information, determines a time domain transmission resource determining station according to the time domain transmission resource determined by the transmission frequency indication information and the time domain transmission resource indication information corresponding thereto The time domain transmission resource is the time domain transmission resource occupied by the first device to send data. And determining, by the second device, the number of times of transmission of the data according to the number of times of transmission indication, and determining the time domain transmission resource according to the number of transmissions and the time domain transmission resource indication information corresponding to the transmission quantity indication information. The transmission times indication information is pre-configuration information of the second device or a broadcast message sent by the network side device. The pre-configuration information of the second device is the same as the pre-configuration information of the first device, so the first device does not need to add the transmission frequency indication information to the scheduling allocation information. If the number of times of transmission indication information is not the above two types of information, the scheduling allocation information further includes the number of times of transmission indication information.

Optionally, the second device determines, according to the value corresponding to the preset transmission times indicator bit in the scheduling allocation information, the number of transmissions of the data, for example, 10 indicates that the number of transmissions is 4 times. Optionally, the second device determines, according to the relationship list corresponding to the preset number of transmission indication bits and the number of transmission times, the number of transmission times indication information, for example, 11 indicates that the number of transmissions is 8 times, 16 times, and the like.

105. The second device receives data sent by the first device by using the time domain transmission resource.

Specifically, after determining the time domain transmission resource, the second device receives data sent by the first device by using the time domain transmission resource.

It should be noted that, in the embodiment of the present invention, once the transmission frequency indication information and/or the time domain transmission resource indication information corresponding to the transmission frequency indication information is changed, the time domain transmission resource is also With the change.

In the prior art, the second communication mode may adopt a semi-static resource reservation manner, that is, when the user equipment occupies certain resources in the preset resource pool period, it may declare that the same period is used in several cycles. Resources, other users can avoid selecting these resources after learning. This mode can reduce the probability of conflicts between users using the same resources and improve the overall performance of the system, but when The two user equipments select the same resource in the same period, and then the two user equipments in the subsequent preset resource pool periods occupy the same resources and collide. When the first communication mode can adopt the semi-static scheduling mode of the base station, the base station schedules the user equipment to occupy the same resource in several cycles. In this mode, the base station does not need to send scheduling signaling for each data transmission of the user equipment, saving Signaling between the base station and the user equipment, but two user equipments located in two adjacent cells may be scheduled to use the same resource by the two base stations in a certain preset resource pool period, because two The base station does not interact with each other. Therefore, two user equipments occupying the same resources and colliding in the subsequent several preset resource pool periods. In the above two modes, two user equipments occupy the same resources and collide, so that the data transmission of the two user equipments is affected.

In an embodiment of the present invention, the time domain transmission resource used by the transmitting side user equipment is not static. In the second communication mode, the SA ID field may be used to determine or indicate a series of resources in each period of the preset resource pool occupied by the same user equipment, that is, the SA ID field value indicates the cross-cycle resource. The assigned pattern determines a series of resources for each cycle in a number of cycles. For example, if the value of the SA ID field is 11000101, which corresponds to a resource allocation of multiple periods, and the value of the SA ID field is 11000100, it corresponds to resource allocation of another multiple period. It is assumed that the time domain transmission resource indicated by the SA ID field in the first one of the preset resource pool periods is A, and the time domain transmission resource used by the transmitting side user equipment in the second predetermined resource pool period is not necessarily For A, the specific location depends on the value of the SA ID field. The two user equipments use different SA IDs. Even if two user equipments occupy the same time domain transmission resources within a preset resource pool period, the SAs are different in the next preset resource pool period. User equipment also occupies different time domain transmission resources. Because the value of the SA ID field is diverse, the probability of the same SA ID field is small, that is, the probability of selecting the same resource is small, thereby reducing the probability of resource collision and improving performance.

In another embodiment of the present invention, in the first communication mode, the cell ID is used to determine or indicate a series of resources in each period of the preset resource pool occupied by the same user equipment, that is, a cell ID indication. A pattern of cross-cycle resource allocations can determine a series of resources for each cycle in a number of cycles. For example, if the cell ID is 110001010, which corresponds to a resource allocation of a plurality of cycles, and the cell ID is 110001011, it corresponds to resource allocation of another plurality of cycles. It is assumed that the time domain transmission resource indicated by the cell ID in the first one of the preset resource pool periods is B, and the time domain transmission resource used by the transmitting side user equipment in the second predetermined resource pool period is not necessarily B, the specific location depends on the cell ID value. Similarly, because the cell ID is different, it belongs to two of the two cells. The user device does not use the same time domain resource each time it transmits data within the preset resource pool period. Thereby, the probability of resource collision between cells is reduced, and the receiving performance is improved. In summary, the embodiment of the present invention can effectively avoid the resource collision problem generated by two user equipments using the same resource in a plurality of the preset resource pool periods, thereby improving the reliability and effectiveness of data transmission.

When the first communication mode and the second communication mode exist in the system, the transmitting side user equipment determines the transmission resource according to the mode. For example, when the sending side user equipment sends data in the resource pool supporting the first communication mode, determining a series of the cross-period according to the resource location of the current transmission period or the resource location and the cell ID of the first transmission data. The resource is sent; when the data device that supports the second communication mode sends data, the user equipment on the transmitting side determines the cross-cycle according to the resource location of the current transmission period or the resource location and SA ID of the first data to be sent. A series of resources are sent.

When the first communication mode and the second communication mode exist in the system, the receiving side user equipment determines the receiving resource according to which communication mode is supported by the receiving resource pool. For example, when receiving the data in the resource pool supporting the first communication mode, the receiving side user equipment determines the cross-cycle according to the resource location of the data received in the current transmission period or the resource location and the cell ID of the first received data. A series of resources are received; when receiving data in a resource pool supporting the second communication mode, the receiving side user equipment determines the location of the resource received by the current transmission period or the resource location and SA ID of the first received data. A series of resources across the cycle are received.

In the embodiment of the present invention, the scheduling allocation information is sent to the second device by using the first device, and the scheduling allocation information includes time domain transmission resource indication information corresponding to the transmission frequency indication information; the first device passes the indication information by the transmission number and The time domain transmission resource determined by the corresponding time domain transmission resource indication information sends the data to the second device; the second device receives the scheduling allocation information sent by the first device; and the second device according to the transmission frequency indication information and the time domain transmission corresponding thereto The resource indication information determines the time domain transmission resource; the second device receives the data sent by the first device by using the time domain transmission resource, thereby implementing the variable transmission frequency transmission of the data, thereby improving the channel capacity or improving the transmission reliability, and improving the system performance. .

FIG. 3 is a schematic structural diagram of a first device according to an embodiment of the present invention. The first device 30 includes an information transmitting unit 301 and a data transmitting unit 302.

The information sending unit 301 is configured to send scheduling allocation information to the second device, where the scheduling allocation The information includes time domain transmission resource indication information corresponding to the transmission frequency indication information.

In a specific implementation, the information sending unit 301 sends the scheduling allocation information to the second device, where the scheduling allocation information includes time domain transmission resource indication information corresponding to the transmission frequency indication information. Optionally, the transmission quantity indication information is determined by the first device autonomously, and the scheduling allocation information further includes the transmission frequency indication information. Optionally, the transmission quantity indication information is determined by the pre-configuration information of the first device, and the scheduling allocation information includes only the time domain transmission resource indication information corresponding to the transmission quantity indication information. The resource that the information sending unit 301 sends the scheduling allocation information is not limited herein.

The data sending unit 302 is configured to send data to the second device by using a time domain transmission resource determined by the transmission frequency indication information and the time domain transmission resource indication information corresponding thereto.

In a specific implementation, the data sending unit 302 sends data to the second device by using the time-domain transmission resource determined by the transmission frequency indication information and the time domain transmission resource indication information corresponding thereto, and the specific implementation process thereof Refer to step 102 in the embodiment shown in FIG. 2, and details are not described herein again.

Optionally, the first device further includes a message receiving unit, which is not indicated in FIG. 3, where the message receiving unit is configured to receive a notification message that is sent by the network side device and that carries scheduling allocation information, where the notification message is a broadcast message. One or more of radio resource control protocol RRC dedicated signaling, media access control control unit (MAC CE) information, and physical layer scheduling signaling.

In a specific implementation, the transmission quantity indication information is determined by the network side device. Optionally, the transmission quantity indication information is determined by the broadcast message sent by the network side device. At this time, the scheduling allocation information includes only the time domain transmission resource indication information corresponding to the transmission frequency indication information. Optionally, the transmission quantity indication information is determined by one or more of the RRC dedicated signaling, the MAC CE information, and the physical layer scheduling signaling sent by the network side device. The scheduling allocation information further includes the transmission frequency indication information. Optionally, the transmission quantity indication information is used by the broadcast message, the pre-configuration information of the first device, the RRC dedicated signaling, the MAC CE information, and the physical layer scheduling signaling. It is determined that the scheduling allocation information further includes the transmission frequency indication information.

FIG. 4 is a schematic structural diagram of a network side device according to an embodiment of the present invention. The network side device 40 includes an information determining unit 401 and a message transmitting unit 402.

The information determining unit 401 is configured to determine scheduling allocation information, where the scheduling allocation information includes time domain transmission resource indication information corresponding to the transmission frequency indication information.

The message sending unit 402 is configured to send, to the first device, a notification message that carries the scheduling allocation information, where the notification message is one of a broadcast message, an RRC dedicated signaling, a MAC CE information, and a physical layer scheduling signaling. A variety.

The transmission number indication information is determined by the broadcast message.

The transmission number indication information is determined by one or more of the RRC dedicated signaling, the MAC CE information, and the physical layer scheduling signaling, and the scheduling allocation information further includes the transmission frequency indication information.

FIG. 5 is a schematic structural diagram of a second device according to an embodiment of the present invention. The second device 50 includes an information receiving unit 501, a resource determining unit 502, and a data receiving unit 503.

The information receiving unit 501 is configured to receive scheduling allocation information sent by the first device, where the scheduling allocation information includes time domain transmission resource indication information corresponding to the transmission frequency indication information.

In a specific implementation, the transmission quantity indication information is pre-configuration information of the second device or a broadcast message sent by the network side device. If the number of times of transmission indication information is not the above two types of information, the scheduling allocation information further includes the number of times of transmission indication information.

The resource determining unit 502 is configured to determine a time domain transmission resource according to the time domain transmission resource determined by the transmission frequency indication information and the time domain transmission resource indication information corresponding thereto.

In a specific implementation, the resource determining unit 502 is specifically configured to determine a number of transmissions according to the transmission quantity indication information, and determine time domain transmission according to the number of transmissions and the time domain transmission resource indication information corresponding to the transmission quantity indication information. Resources.

The data receiving unit 503 is configured to receive data sent by the first device by using the time domain transmission resource.

It should be noted that the first device shown in FIG. 3, the network side device shown in FIG. 4, and the second device shown in FIG. 5 are combined to implement the embodiment shown in FIG. 2, and the basic idea is The beneficial effects are the same as those in FIG. 2, and are not described herein again.

FIG. 6 is a schematic structural diagram of another first device according to an embodiment of the present invention. As shown in FIG. 6, the first device includes at least one processor 601, such as a CPU, at least one communication bus 602, an input device 603, an output device 604, a memory 605, a power module 606, and a wireless communication module 607. Among them, the communication bus 602 is used to implement connection communication between these components. The input device 603 is configured to receive an audio or video signal, and is further configured to receive an input command of the user and generate an input according to the input command. The key input data is used to control various operations of the first device. The output device 604 is configured to provide an output signal (eg, an audio signal, a video signal, an alarm signal, a vibration signal, etc.) in a visual, audio, and/or tactile manner, and the output device 604 can include a display unit, an audio output module, an alarm unit Etc., not indicated in Figure 6. The power module 606 receives external power or internal power under the control of the processor 601 and provides the required power to devices, modules, memory 605, processor 601, etc. on the communication bus 602.

The memory 605 may include at least one type of storage medium including a flash memory, a hard disk, a multimedia card, a card type memory (eg, SD or DX memory, etc.), a random access memory (RAM), static random access. Memory (SRAM), read only memory (ROM), electrically erasable programmable read only memory (EEPROM), programmable read only memory (PROM), magnetic memory, magnetic disk, optical disk, and the like. The processor 601 typically controls the overall operation of the first device, for example, the processor 601 performs the control and processing associated with voice calls, data communications, video calls, and the like.

The processor 601 is configured to control when the information sending unit in the embodiment shown in FIG. 3 sends the scheduling allocation information, and what resources are sent; and when the data sending unit in the embodiment shown in FIG. 3 sends data, what is passed. The resource is sent.

The wireless communication module 607 is configured to transmit a radio signal to at least one of a base station (eg, an access point, a Node B, etc.), an external terminal, and a server, and/or a device that receives a radio signal therefrom. Such radio signals may include voice call signals, video call signals, or various types of data transmitted and/or received in accordance with text and/or multimedia messages.

The wireless communication module 607 is used to implement the information sending unit and the data sending unit in the embodiment shown in FIG. 6. For the specific implementation process, refer to the detailed description of the embodiment shown in FIG. 3, and details are not described herein again. The wireless communication module 607 also includes an air interface, not shown in FIG. The air interface is used by the first device to communicate with other user equipment or network side devices.

FIG. 7 is a schematic structural diagram of another network side device according to an embodiment of the present invention. As shown in FIG. 7, the network side device includes at least one controller 701, at least one communication bus 702, a receiver 703, and a transmitter 704. The network side device allocates various resources required for communication for the first device shown in FIG. 6 and the second device shown in FIG. Among them, the communication bus 702 is used to implement connection communication between these components. The receiver 703 and the transmitter 704 are collectively referred to as a transceiver station, and the transceiver station is under control. Under the control of the device 701, the conversion between the control of the base station and the wireless channel is completed, and the transmission and reception of the communication signal of the user equipment and the wireless transmission between the mobile platform and related control functions are realized. The controller 701 is responsible for all mobile communication interface management, mainly the allocation, release and management of wireless channels.

The transmitter 704 is configured to implement the message sending unit in the embodiment shown in FIG. 4, and send a broadcast message, RRC dedicated signaling, MAC CE information, and physical layer scheduling signaling to the user equipment in the coverage of the network side device. One or more of them.

The controller 701 is configured to implement the information determining unit in the embodiment shown in FIG. 4, and determine the transmission frequency indication information and/or the time domain transmission resource indication information corresponding thereto.

The network side device also includes an air interface, not shown in FIG.

FIG. 8 is a schematic structural diagram of another second device according to an embodiment of the present invention. As shown in FIG. 8, the second device includes at least one processor 801, such as a CPU, at least one communication bus 802, an input device 803, an output device 804, a memory 805, a power module 806, and a wireless communication module 807. Among them, the communication bus 802 is used to implement connection communication between these components. The input device 803 is configured to receive an audio or video signal, and is further configured to receive an input command of the user and generate key input data according to the input command to control various operations of the second device. The output device 804 is configured to provide an output signal (eg, an audio signal, a video signal, an alarm signal, a vibration signal, etc.) in a visual, audio, and/or tactile manner, and the output device 804 can include a display unit, an audio output module, an alarm unit Etc., not indicated in Figure 8. The power module 806 receives external power or internal power under the control of the processor 801 and provides the required power to devices, modules, memory 805, processor 801, etc. on the communication bus 802.

The memory 805 may include at least one type of storage medium including a flash memory, a hard disk, a multimedia card, a card type memory (eg, SD or DX memory, etc.), a random access memory (RAM), static random access. Memory (SRAM), read only memory (ROM), electrically erasable programmable read only memory (EEPROM), programmable read only memory (PROM), magnetic memory, magnetic disk, optical disk, and the like. The processor 801 typically controls the overall operation of the second device, for example, the processor 801 performs the control and processing associated with voice calls, data communications, video calls, and the like.

The processor 801 is configured to implement the resource determining unit in the embodiment shown in FIG. 5, and determine the time domain transmission resource according to the transmission frequency indication information and the time domain transmission resource indication information corresponding thereto.

The wireless communication module 807 is configured to transmit a radio signal to at least one of a base station (eg, an access point, a Node B, etc.), an external terminal, and a server, and/or a device that receives a radio signal therefrom. Such radio signals may include voice call signals, video call signals, or various types of data transmitted and/or received in accordance with text and/or multimedia messages.

The wireless communication module 807 is used to implement the information receiving unit and the data receiving unit in the embodiment shown in FIG. 5. For the specific implementation process, refer to the embodiment shown in FIG. 5, and details are not described herein again. The wireless communication module 807 also includes an air interface, not shown in FIG. The air interface is for the second device to communicate with other user devices or the first device.

It should be noted that the first device shown in FIG. 6 , the network side device shown in FIG. 7 , and the second device shown in FIG. 8 are combined to implement the embodiment shown in FIG. 2 .

The embodiment of the present invention further provides a data transmission system, including at least one first device shown in FIG. 3, at least one network side device shown in FIG. 4, and at least one second device shown in FIG. 5, or at least one The first device shown in FIG. 6, at least one network side device shown in FIG. 7, and at least one second device shown in FIG. The embodiment of the invention can support variable transmission times, is beneficial to increase capacity or improve transmission reliability, and prompts system performance.

It should be noted that, for the foregoing method embodiments, for the sake of simple description, they are all expressed as a series of action combinations, but those skilled in the art should understand that the present invention is not limited by the described action sequence. Because certain steps may be performed in other sequences or concurrently in accordance with the present invention. In addition, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

In the above embodiments, the descriptions of the various embodiments are different, and the details that are not detailed in a certain embodiment can be referred to the related descriptions of other embodiments.

The steps in the method of the embodiment of the present invention may be sequentially adjusted, merged, and deleted according to actual needs.

The units in the apparatus of the embodiment of the present invention may be combined, divided, and deleted according to actual needs. Those skilled in the art can combine or combine the different embodiments described in the specification and the features of the different embodiments.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented in hardware, firmware implementation, or a combination thereof. When implemented in software, the functions described above may be stored in or transmitted as one or more instructions or code on a computer readable medium. Computer readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another. A storage medium may be any available media that can be accessed by a computer. For example, but not limited to, the computer readable medium may include a random access memory (RAM), a read-only memory (ROM), and an electrically erasable programmable read-only memory (Electrically Erasable Programmable). Read-Only Memory (EEPROM), Compact Disc Read-Only Memory (CD-ROM) or other optical disc storage, disk storage media or other magnetic storage devices, or can be used to carry or store an instruction or data structure. The desired program code and any other medium that can be accessed by the computer. Also. Any connection may suitably be a computer readable medium. For example, if the software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), or wireless technologies such as infrared, radio, and microwave, Then coaxial cable, fiber optic cable, twisted pair, DSL or wireless technologies such as infrared, wireless and microwave are included in the fixing of the associated medium. As used in the present invention, a disk and a disc include a compact disc (CD), a laser disc, a compact disc, a digital versatile disc (DVD), a floppy disk, and a Blu-ray disc, wherein the disc is usually magnetically copied, and the disc is The laser is used to optically replicate the data. Combinations of the above should also be included within the scope of the computer readable media.

In summary, the above description is only a preferred embodiment of the technical solution of the present invention, and is not intended to limit the scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims (29)

1. A data transmission method, comprising:

   The first device sends the scheduling allocation information to the second device, where the scheduling allocation information includes time domain transmission resource indication information corresponding to the transmission frequency indication information;

   The first device sends data to the second device by using a time domain transmission resource determined by the transmission frequency indication information and the time domain transmission resource indication information corresponding thereto.
2. The method according to claim 1, wherein the transmission number indication information is determined by the first device, and the scheduling allocation information further includes the transmission frequency indication information.
3. The method according to claim 1, wherein the transmission number indication information is determined by pre-configuration information of the first device.
4. The method according to claim 1, wherein before the first device sends the scheduling allocation information to the second device, the method further includes:

   The first device receives a notification message that is sent by the network side device and carries scheduling allocation information, where the notification message is a broadcast message, a radio resource control protocol RRC dedicated signaling, a media access control control unit (MAC CE) information, and a physical layer scheduling. One or more of the signaling.
5. The method of claim 4 wherein said number of transmission indications is determined by said broadcast message.
6. The method according to claim 4, wherein the transmission number indication information is determined by one or more of the RRC dedicated signaling, the MAC CE information, and the physical layer scheduling signaling. The scheduling allocation information further includes the transmission number indication information.
7. The method according to any one of claims 3-6, wherein the transmission number indication information is performed by the broadcast message, pre-configuration information of the first device, the RRC dedicated signaling, The MAC CE information and the physical layer scheduling signaling are determined in multiple manners, and the scheduling allocation information further includes the transmission frequency indication information.
8. A data transmission method, comprising:

   The network side device determines scheduling allocation information, where the scheduling allocation information includes time domain transmission resource indication information corresponding to the transmission quantity indication information;

   The network side device sends a notification message that carries the scheduling allocation information to the first device, where the notification message is one or more of a broadcast message, RRC dedicated signaling, MAC CE information, and physical layer scheduling signaling. .
9. The method of claim 8, wherein the number of transmission indications is determined by the broadcast message.
10. The method according to claim 8, wherein the transmission number indication information is determined by one or more of the RRC dedicated signaling, the MAC CE information, and the physical layer scheduling signaling. The scheduling allocation information further includes the transmission number indication information.
11. A data transmission method, comprising:

    The second device receives scheduling allocation information sent by the first device, where the scheduling allocation information includes time domain transmission resource indication information corresponding to the transmission frequency indication information;

    Determining, by the second device, the time domain transmission resource according to the time-domain transmission resource determined by the transmission frequency indication information and the time domain transmission resource indication information corresponding thereto;

    The second device receives data sent by the first device by using the time domain transmission resource.
12. The method according to claim 11, wherein the transmission number indication information is pre-configuration information of the second device or a broadcast message sent by the network side device.
13. The method according to claim 11, wherein the scheduling allocation information further comprises the transmission number indication information.
14. The method according to claim 12 or 13, wherein the second device determines the time domain transmission resource according to the time-domain transmission resource determined by the transmission number indication information and the time domain transmission resource indication information corresponding thereto ,include:

    Determining, by the second device, the number of transmissions according to the transmission quantity indication information;

    The second device determines the time domain transmission resource according to the number of transmissions and the time domain transmission resource indication information corresponding to the transmission number indication information.
15. A first device, comprising:

    An information sending unit, configured to send scheduling allocation information to the second device, where the scheduling allocation information includes time domain transmission resource indication information corresponding to the transmission frequency indication information;

    And a data sending unit, configured to send data to the second device by using a time domain transmission resource determined by the transmission frequency indication information and the time domain transmission resource indication information corresponding thereto.
16. The first device according to claim 15, wherein the transmission number indication information is determined by the first device, and the scheduling allocation information further includes the transmission frequency indication information.
17. The first device according to claim 15, wherein the transmission number indication information is determined by pre-configuration information of the first device.
18. The first device according to claim 15, wherein the first device further comprises:

    a message receiving unit, configured to receive a notification message that is sent by the network side device and that carries scheduling allocation information, where the notification message is a broadcast message, a radio resource control protocol RRC dedicated signaling, a media access control control unit (MAC CE) information, One or more of physical layer scheduling signaling.
19. The first device according to claim 18, wherein said transmission number indication information is determined by said broadcast message.
20. The first device according to claim 18, wherein the transmission number indication information is one of the RRC dedicated signaling, the MAC CE information, and the physical layer scheduling signaling. And determining, the scheduling allocation information further includes the transmission frequency indication information.
21. The first device according to any one of claims 17 to 20, wherein the transmission number indication information is performed by the broadcast message, pre-configuration information of the first device, the RRC dedicated signaling, the MAC CE And determining, in the physical layer scheduling signaling, the scheduling allocation information further includes the transmission frequency indication information.
22. A network side device, comprising:

    An information determining unit, configured to determine scheduling allocation information, where the scheduling allocation information includes time domain transmission resource indication information corresponding to the transmission quantity indication information;

    a message sending unit, configured to send, to the first device, a notification message that carries the scheduling allocation information, where the notification message is one or more of a broadcast message, RRC dedicated signaling, MAC CE information, and physical layer scheduling signaling Kind.
23. The network side device according to claim 22, wherein the transmission number indication information is determined by the broadcast message.
24. The network side device according to claim 22, wherein the transmission frequency indication information is determined by one or more of the RRC dedicated signaling, the MAC CE information, and the physical layer scheduling signaling. The scheduling allocation information further includes the transmission frequency indication information.
25. A second device, comprising:

    An information receiving unit, configured to receive scheduling allocation information sent by the first device, where the scheduling allocation information includes time domain transmission resource indication information corresponding to the transmission frequency indication information;

    a resource determining unit, configured to determine a time domain transmission resource according to the time domain transmission resource determined by the transmission frequency indication information and the time domain transmission resource indication information corresponding thereto;

    And a data receiving unit, configured to receive data sent by the first device by using the time domain transmission resource.
26. The second device according to claim 25, wherein said number of transmissions is indicated The information is pre-configuration information of the second device or a broadcast message sent by the network side device.
27. The second device according to claim 25, wherein the scheduling allocation information further comprises the transmission number indication information.
28. The second device according to claim 26 or 27, wherein the resource determining unit is configured to determine a number of transmissions according to the number of transmission indications, and according to the number of transmissions and the indication information of the number of transmissions The corresponding time domain transmission resource indication information determines the time domain transmission resource.
29. A data transmission system, comprising: the first device according to claims 15-21, the network side device according to claims 22-24, and the second device according to claims 25-28.

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