CN110831166B - Data transmission method and device, network side equipment and terminal equipment - Google Patents
Data transmission method and device, network side equipment and terminal equipment Download PDFInfo
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- CN110831166B CN110831166B CN201810898377.1A CN201810898377A CN110831166B CN 110831166 B CN110831166 B CN 110831166B CN 201810898377 A CN201810898377 A CN 201810898377A CN 110831166 B CN110831166 B CN 110831166B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
- H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention provides a data transmission method and device, network side equipment and terminal equipment, and the method suitable for the network side equipment comprises the following steps: generating a cell activation signaling, and sending the cell activation signaling to a terminal device on a primary cell in a first transmission time interval to activate a corresponding secondary cell; configuring first resource allocation information, and sending the first resource allocation information to the terminal device on the primary cell in the first transmission time interval, so that the terminal device receives data on the primary cell and the activated secondary cell according to the first resource allocation information; configuring second resource allocation information corresponding to each activated secondary cell, and sending the corresponding second resource allocation information to the terminal equipment on each secondary cell in a second transmission time interval which is after and adjacent to the first transmission time interval. The scheme can effectively improve the reliability of data transmission and reduce time delay.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a data transmission method, a data transmission apparatus, a network side device, and a terminal device.
Background
Currently, development work of a 5 th generation mobile communication system (5G) is actively underway. According to future application requirements, the 5G system needs to support a variety of service scenarios, wherein Low-Latency and high-reliability (URLLC) communication scenarios such as unmanned driving, industrial automation, and the like are receiving wide attention. In general, URLLC data has very high burstiness, and its requirement on delay is high, and in addition, such data has very strict requirement on transmission reliability. Currently, reliability research of URLLC is still in the primary stage, and the proposed scheme mainly has a Repeat Transmission (RT) mechanism, that is, a base station repeatedly transmits URLLC data to be transmitted to a terminal for multiple times, and transmits the same URLLC data (data copy) in multiple different frequency resources or time resources, so that frequency domain or time domain transmit diversity gain can be obtained, and the demodulation success rate of data at a receiving end is further improved.
In the new standards (release.16) clause, Carrier Aggregation (CA) technology will be applied to transmission of URLLC data, and CA can be used for repeated transmission or high bandwidth transmission of URLLC data. When data is repeatedly transmitted in a carrier aggregation scene, a base station can simultaneously transmit the same data on BWPs (Band Width Part, bandwidth unit) of a plurality of cells, further expand frequency domain transmit diversity gain (the larger the frequency domain distance, the more obvious the frequency domain transmit diversity gain), and improve the reliability of data transmission. Different carriers can also be used for sending different data, and further more data can be transmitted in the shortest time to meet the time delay requirement of URLLC data transmission. However, in a CA scenario, a base station cannot make multiple cells in an active state for a Long time, which may cause a terminal to scan the multiple cells for a Long time and increase battery consumption, so that a cell activation scheme is indispensable, and if a cell activation scheme in the current LTE (Long Term Evolution) is continuously adopted, it is difficult to effectively support a very bursty and very delay-sensitive URLLC service through a Radio Resource Control (RRC) connection reconfiguration command. One possible method is to send a cell activation signal by using Downlink Control Information (DCI), but the terminal immediately activates one or more secondary cells after receiving the activation signal in the Control region of the primary cell, but at this Time, because of the existence of the Control signal receiving processing delay and the cell activation delay, the terminal cannot read the Control region in other cells of the current TTI (Transmission Time interval) and receive the user data of the secondary cell by using the resource allocation Information of the Control region, as shown in fig. 1. If the auxiliary cell receives the resource allocation information and receives data after waiting for the next TTI, the data receiving time delay is brought, and the URLLC time delay requirement cannot be well met.
Therefore, in order to make the carrier aggregation technology better perform in the aspect of URLLC service delivery, it is necessary to improve and optimize a data receiving scheme in a CA scenario based on a DCI activation method, so that a base station can quickly send data in multiple secondary cells, thereby improving reliability of data transmission and reducing time delay.
Disclosure of Invention
Based on the above problems, the present invention provides a new data transmission scheme, which enables a base station to quickly send data in multiple secondary cells, achieves the effects of improving the reliability of data transmission and reducing time delay, and solves the problem that the existing DCI-based cell activation carrier aggregation scenario cannot realize quick data transmission.
In view of this, according to a first aspect of the present invention, a data transmission method is provided, which is applied to a network side device, and the data transmission method includes: generating a cell activation signaling, and sending the cell activation signaling to a terminal device on a primary cell in a first transmission time interval to activate a corresponding secondary cell; configuring first resource allocation information, and sending the first resource allocation information to the terminal device on the primary cell in the first transmission time interval, so that the terminal device receives data on the primary cell and the activated secondary cell according to the first resource allocation information; configuring second resource allocation information corresponding to each activated secondary cell, and sending the corresponding second resource allocation information to the terminal equipment on each secondary cell in a second transmission time interval which is located after and adjacent to the first transmission time interval.
In the technical scheme, a network side device sends a cell activation signaling and first resource allocation information to a terminal device on a primary cell in the same transmission time interval (i.e. a first transmission time interval) respectively, so that the terminal device activates a corresponding secondary cell according to the cell activation signaling, and simultaneously receives data on the primary cell and the activated secondary cell according to the first resource allocation information, that is, the activated secondary cell is used to send data to the terminal device in the transmission time interval in which the cell activation signaling is located, and the primary cell sends the time-frequency resource position of the sent data in the secondary cell to the terminal device, that is, the resource allocation information on the primary cell is used to complete data scheduling on the secondary cell in the transmission time interval in which the cell activation signaling is located, and further, in the next transmission time interval of the first transmission time interval, in other words, in a second transmission time interval located after the first transmission time interval and adjacent to the first transmission time interval, second resource allocation information corresponding to the secondary cell is sent on each activated secondary cell, that is, in the second transmission time interval, the secondary cell is used to send the resource allocation information corresponding to the secondary cell to the terminal device, so that the terminal device receives data at a time-frequency resource position corresponding to the second resource allocation information in each secondary cell in the second transmission time interval, thereby achieving an effect of reducing data transmission delay in a carrier aggregation scenario, and improving transmission performance of URLLC data with a high requirement for delay.
In the foregoing technical solution, preferably, the data transmission method further includes: and configuring third resource allocation information corresponding to the primary cell, and sending the third resource allocation information to the terminal equipment on the primary cell in the second transmission time interval.
In this technical solution, when the activated secondary cell starts to send the second resource allocation information corresponding to the secondary cell to the terminal device in the second transmission time interval after the first transmission time interval and adjacent to the first transmission time interval, the primary cell may also be used to send the third resource allocation information corresponding to the primary cell to the terminal device in the second transmission time interval, so that the terminal device receives data in the time-frequency resource position corresponding to the third resource allocation information in the primary cell in the second transmission time interval.
In any of the above technical solutions, preferably, the cell activation signaling is carried in downlink control information; and the first resource allocation information is information for indicating the resource allocation situation of the primary cell and the activated secondary cell at the same time, or the first resource allocation information is a set of information for indicating the resource allocation situation of the primary cell and information for indicating the resource allocation situation of the activated secondary cell.
In the technical scheme, a cell activation signaling for activating the secondary cell may be specifically carried in Downlink Control Information (DCI) and sent to the terminal device in the primary cell, so as to implement resource allocation in the secondary cell after the secondary cell is activated; for the first resource allocation information for the terminal device to accurately receive data in the primary cell and the activated secondary cell, the first resource allocation information may be an individual information, and may be used to indicate the resource allocation situations of the primary cell and the activated secondary cell at the same time, or may be a combined information, that is, a set including a plurality of resource allocation information for indicating the resource allocation situations of the primary cell and the secondary cell, so as to implement diversified indication of the resource allocation situations of the primary cell and the secondary cell, and particularly, it may be ensured that the terminal device receives the resource allocation information for the secondary cell in the activated secondary cell.
According to a second aspect of the present invention, a data transmission apparatus is provided, which is suitable for a network side device, and includes: a processing module, configured to generate a cell activation signaling, and send the cell activation signaling to a terminal device on a primary cell in a first transmission time interval, so as to activate a corresponding secondary cell; a first configuration module, configured to configure first resource allocation information, and send the first resource allocation information to the terminal device on the primary cell in the first transmission time interval, so that the terminal device receives data on the primary cell and the activated secondary cell according to the first resource allocation information; a second configuration module, configured to configure second resource allocation information corresponding to each activated secondary cell, and send the corresponding second resource allocation information to the terminal device on each secondary cell in a second transmission time interval located after and adjacent to the first transmission time interval.
In the technical scheme, a network side device sends a cell activation signaling and first resource allocation information to a terminal device on a primary cell in the same transmission time interval (i.e. a first transmission time interval) respectively, so that the terminal device activates a corresponding secondary cell according to the cell activation signaling, and simultaneously receives data on the primary cell and the activated secondary cell according to the first resource allocation information, that is, the activated secondary cell is used to send data to the terminal device in the transmission time interval in which the cell activation signaling is located, and the primary cell sends the time-frequency resource position of the sent data in the secondary cell to the terminal device, that is, the resource allocation information on the primary cell is used to complete data scheduling on the secondary cell in the transmission time interval in which the cell activation signaling is located, and further, in the next transmission time interval of the first transmission time interval, in other words, in a second transmission time interval located after the first transmission time interval and adjacent to the first transmission time interval, second resource allocation information corresponding to the secondary cell is sent on each activated secondary cell, that is, in the second transmission time interval, the secondary cell is used to send the resource allocation information corresponding to the secondary cell to the terminal device, so that the terminal device receives data at a time-frequency resource position corresponding to the second resource allocation information in each secondary cell in the second transmission time interval, thereby achieving an effect of reducing data transmission delay in a carrier aggregation scenario, and improving transmission performance of URLLC data with a high requirement for delay.
In the foregoing technical solution, preferably, the second configuration module is further configured to: and configuring third resource allocation information corresponding to the primary cell, and sending the third resource allocation information to the terminal equipment on the primary cell in the second transmission time interval.
In this technical solution, when the activated secondary cell starts to send the second resource allocation information corresponding to the secondary cell to the terminal device in the second transmission time interval after the first transmission time interval and adjacent to the first transmission time interval, the primary cell may also be used to send the third resource allocation information corresponding to the primary cell to the terminal device in the second transmission time interval, so that the terminal device receives data in the time-frequency resource position corresponding to the third resource allocation information in the primary cell in the second transmission time interval.
In any of the above technical solutions, preferably, the cell activation signaling is carried in downlink control information; and the first resource allocation information is information for indicating the resource allocation situation of the primary cell and the activated secondary cell at the same time, or the first resource allocation information is a set of information for indicating the resource allocation situation of the primary cell and information for indicating the resource allocation situation of the activated secondary cell.
In the technical scheme, a cell activation signaling for activating the secondary cell may be specifically carried in Downlink Control Information (DCI) and sent to the terminal device in the primary cell, so as to implement resource allocation in the secondary cell after the secondary cell is activated; for the first resource allocation information for the terminal device to accurately receive data in the primary cell and the activated secondary cell, the first resource allocation information may be an individual information, and may be used to indicate the resource allocation situations of the primary cell and the activated secondary cell at the same time, or may be a combined information, that is, a set including a plurality of resource allocation information for indicating the resource allocation situations of the primary cell and the secondary cell, so as to implement diversified indication of the resource allocation situations of the primary cell and the secondary cell, and particularly, it may be ensured that the terminal device receives the resource allocation information for the secondary cell in the activated secondary cell.
According to a third aspect of the present invention, a network side device is provided, including: as for the data transmission apparatus in any of the above technical solutions in the second aspect, the network side device has all the beneficial effects of the data transmission apparatus in any of the above technical solutions, and details are not repeated here.
According to a fourth aspect of the present invention, a data transmission method is provided, which is suitable for a terminal device, and the data transmission method includes: receiving a cell activation signaling sent by a network side device on a primary cell in a first transmission time interval to activate a corresponding secondary cell, and receiving first resource allocation information sent by the network side device on the primary cell in the first transmission time interval; receiving data sent by the network side equipment on the primary cell and the activated secondary cell according to the first resource allocation information; receiving second resource allocation information, which is sent by the network side device on each activated secondary cell and corresponds to each secondary cell, in a second transmission time interval located after the first transmission time interval and adjacent to the first transmission time interval; and respectively receiving the data sent by the network side equipment on each corresponding secondary cell according to the second resource allocation information.
In the technical scheme, the terminal device receives a cell activation signaling and first resource allocation information respectively sent by the network side device on a primary cell in the same transmission time interval (i.e. a first transmission time interval), makes a corresponding secondary cell enter an activation state according to the cell activation signaling, and receives data on the primary cell and the activated secondary cell according to the first resource allocation information, that is, the terminal device receives the cell activation signaling sent by the network side device, receives the first resource allocation information sent by the network side device on the primary cell in the first transmission time interval of the cell activation signaling, and receives the data in the primary cell and the activated secondary cell by using the first resource allocation information, that is, completes data scheduling on the secondary cell by using the resource allocation information on the primary cell in the transmission time interval of the cell activation signaling, further, the terminal device receives, in a next transmission time interval of the first transmission time interval, that is, in a second transmission time interval located after the first transmission time interval and adjacent to the first transmission time interval, resource allocation information corresponding to the secondary cell and sent by the network side device on each activated secondary cell, so as to receive data at a time-frequency resource location corresponding to the second resource allocation information in each secondary cell in the second transmission time interval, thereby achieving an effect of reducing data transmission delay in a carrier aggregation scenario, and improving transmission performance of URLLC data with a high requirement for delay.
In the foregoing technical solution, preferably, the data transmission method further includes: receiving third resource allocation information sent by the network side device on the primary cell in the second transmission time interval; and receiving data sent by the network side equipment on the primary cell in the second transmission time interval according to the third resource allocation information.
In this technical solution, when the terminal device starts to receive the resource allocation information corresponding to the secondary cell, which is sent by the network-side device on the activated secondary cell, in the second transmission time interval after the first transmission time interval and adjacent to the first transmission time interval, the terminal device may also receive third resource allocation information corresponding to the primary cell, which is sent by the network-side device on the primary cell, in the second transmission time interval, so as to be able to receive data in the time-frequency resource position corresponding to the third resource allocation information in the primary cell in the second transmission time interval.
In any of the above technical solutions, preferably, the cell activation signaling is carried in downlink control information; and the first resource allocation information is information for indicating the resource allocation situation of the primary cell and the activated secondary cell at the same time, or the first resource allocation information is a set of information for indicating the resource allocation situation of the primary cell and information for indicating the resource allocation situation of the activated secondary cell.
In the technical scheme, a cell activation signaling for activating the secondary cell, which is sent by a network side device, may be specifically received in Downlink Control Information (DCI), so as to implement resource allocation on the secondary cell after activating the secondary cell; for the first resource allocation information for the terminal device to accurately receive data in the primary cell and the activated secondary cell, the first resource allocation information may be an individual information, and may be used to indicate the resource allocation situations of the primary cell and the activated secondary cell at the same time, or may be a combined information, that is, a set including a plurality of resource allocation information for indicating the resource allocation situations of the primary cell and the secondary cell, so as to implement diversified indication of the resource allocation situations of the primary cell and the secondary cell, and particularly, it may be ensured that the terminal device receives the resource allocation information for the secondary cell in the activated secondary cell.
According to a fifth aspect of the present invention, there is provided a terminal device comprising: a transceiver, configured to receive a cell activation signaling sent by a network side device on a primary cell in a first transmission time interval to activate a corresponding secondary cell, and receive first resource allocation information sent by the network side device on the primary cell in the first transmission time interval; a processor and a memory, the processor being configured to implement the following when executing a computer program stored in the memory: scheduling the transceiver to receive data sent by the network side equipment on the primary cell and the activated secondary cell according to the first resource allocation information; scheduling the transceiver to receive second resource allocation information, which is sent by the network side device on each activated secondary cell and corresponds to each secondary cell, in a second transmission time interval which is located after the first transmission time interval and adjacent to the first transmission time interval; and scheduling the transceiver to respectively receive the data sent by the network side equipment on each corresponding auxiliary cell according to the second resource allocation information.
In the technical scheme, the terminal device receives a cell activation signaling and first resource allocation information respectively sent by the network side device on a primary cell in the same transmission time interval (i.e. a first transmission time interval), makes a corresponding secondary cell enter an activation state according to the cell activation signaling, and receives data on the primary cell and the activated secondary cell according to the first resource allocation information, that is, the terminal device receives the cell activation signaling sent by the network side device, receives the first resource allocation information sent by the network side device on the primary cell in the first transmission time interval of the cell activation signaling, and receives the data in the primary cell and the activated secondary cell by using the first resource allocation information, that is, completes data scheduling on the secondary cell by using the resource allocation information on the primary cell in the transmission time interval of the cell activation signaling, further, the terminal device receives, in a next transmission time interval of the first transmission time interval, that is, in a second transmission time interval located after the first transmission time interval and adjacent to the first transmission time interval, resource allocation information corresponding to the secondary cell and sent by the network side device on each activated secondary cell, so as to receive data at a time-frequency resource location corresponding to the second resource allocation information in each secondary cell in the second transmission time interval, thereby achieving an effect of reducing data transmission delay in a carrier aggregation scenario, and improving transmission performance of URLLC data with a high requirement for delay.
In the above technical solution, preferably, the processor is further configured to implement the following operations when executing the computer program stored in the memory: in the second transmission time interval, scheduling the transceiver to receive third resource allocation information sent by the network side device on the primary cell; and scheduling the transceiver to receive the data sent by the network side equipment on the primary cell in the second transmission time interval according to the third resource allocation information.
In this technical solution, when the terminal device starts to receive the resource allocation information corresponding to the secondary cell, which is sent by the network-side device on the activated secondary cell, in the second transmission time interval after the first transmission time interval and adjacent to the first transmission time interval, the terminal device may also receive third resource allocation information corresponding to the primary cell, which is sent by the network-side device on the primary cell, in the second transmission time interval, so as to be able to receive data in the time-frequency resource position corresponding to the third resource allocation information in the primary cell in the second transmission time interval.
In any of the above technical solutions, preferably, the cell activation signaling is carried in downlink control information; and the first resource allocation information is information for indicating the resource allocation situation of the primary cell and the activated secondary cell at the same time, or the first resource allocation information is a set of information for indicating the resource allocation situation of the primary cell and information for indicating the resource allocation situation of the activated secondary cell.
In the technical scheme, a cell activation signaling for activating the secondary cell, which is sent by a network side device, may be specifically received in Downlink Control Information (DCI), so as to implement resource allocation on the secondary cell after activating the secondary cell; for the first resource allocation information for the terminal device to accurately receive data in the primary cell and the activated secondary cell, the first resource allocation information may be an individual information, and may be used to indicate the resource allocation situations of the primary cell and the activated secondary cell at the same time, or may be a combined information, that is, a set including a plurality of resource allocation information for indicating the resource allocation situations of the primary cell and the secondary cell, so as to implement diversified indication of the resource allocation situations of the primary cell and the secondary cell, and particularly, it may be ensured that the terminal device receives the resource allocation information for the secondary cell in the activated secondary cell.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a diagram illustrating a terminal device receiving user data of a secondary cell in the related art;
fig. 2 is a schematic flow chart illustrating a data transmission method applied to a network side device according to an embodiment of the present invention;
fig. 3 is a diagram illustrating data reception on a primary cell and a secondary cell in a transmission time interval where cell activation signaling is located according to a first embodiment of the present invention;
fig. 4 shows a schematic diagram of data reception on a primary cell and a secondary cell in a transmission time interval in which cell activation signaling is located according to a second embodiment of the present invention;
fig. 5 is a diagram illustrating data reception on a secondary cell at a transmission time interval next to a transmission time interval in which cell activation signaling is located according to an embodiment of the present invention;
fig. 6 shows a schematic block diagram of a data transmission apparatus suitable for a network side device according to an embodiment of the present invention;
FIG. 7 shows a schematic block diagram of a network side device of an embodiment of the invention;
fig. 8 is a flowchart illustrating a data transmission method suitable for a terminal device according to an embodiment of the present invention;
fig. 9 shows a schematic block diagram of a terminal device of an embodiment of the present invention.
Detailed Description
So that the manner in which the above recited objects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
The following describes a scheme of a data transmission method suitable for a network device according to an embodiment of the present invention with reference to fig. 2 to 5.
As shown in fig. 2, the data transmission method suitable for the network side device according to the embodiment of the present invention specifically includes the following steps:
Specifically, the cell activation signaling is carried in the downlink control information, that is, the cell activation signaling for activating the secondary cell may be carried in Downlink Control Information (DCI) and sent to the terminal device on the primary cell, so as to implement resource allocation on the secondary cell after activating the secondary cell.
Specifically, the first resource allocation information is information for indicating resource allocation situations of the primary cell and the activated secondary cell at the same time, or the first resource allocation information is a set of information for indicating resource allocation situations of the primary cell and information for indicating resource allocation situations of the activated secondary cell.
It can be understood that, for the first resource allocation information for the terminal device to accurately receive data in the primary cell and the activated secondary cell, the first resource allocation information may be a single piece of information, and may be used to indicate resource allocation conditions of the primary cell and the activated secondary cell at the same time, as shown in fig. 3, the resource allocation information sent by the primary cell indicates resource allocation conditions of the primary cell and the activated secondary cell 1 and the activated secondary cell 2 after the time t1 when the cell activation signaling processing is completed at the same time; as shown in fig. 4, the resource allocation information sent in the primary cell includes primary cell resource allocation information, secondary cell 1 resource allocation information, and secondary cell 2 resource allocation information, and is a set of 3 resource allocation information; the method and the device can realize diversified indication of the resource allocation conditions of the primary cell and the secondary cell, and particularly can ensure that the terminal equipment receives resource allocation information aiming at the secondary cell in the activated secondary cell.
In this embodiment, the network side device sends a cell activation signaling and first resource allocation information to the terminal device on the primary cell in the same transmission time interval (i.e. a first transmission time interval), respectively, so that the terminal device activates the corresponding secondary cell according to the cell activation signaling, and at the same time, the terminal device receives data on the primary cell and the activated secondary cell according to the first resource allocation information, as shown in fig. 3, that is, the activated secondary cell is used to send data to the terminal device in the transmission time interval in which the cell activation signaling is located, and the primary cell is used to send the time-frequency resource position of the sent data in the secondary cell to the terminal device, that is, the resource allocation information on the primary cell is used to complete data scheduling on the secondary cell in the transmission time interval in which the cell activation signaling is located, and further, in the next transmission time interval of the first transmission time interval, that is, in a second transmission time interval located after the first transmission time interval and adjacent to the first transmission time interval, second resource allocation information corresponding to the secondary cell is sent on each activated secondary cell, that is, in the second transmission time interval, the secondary cell is used to send the resource allocation information corresponding to the secondary cell to the terminal device, so that the terminal device receives data at a time-frequency resource position corresponding to the second resource allocation information in each secondary cell in the second transmission time interval, as shown in fig. 5, in a TTI where the cell activation signaling is located, corresponding resource allocation information is sent on the primary cell, the secondary cell 1, and the secondary cell 2, respectively, so as to achieve an effect of reducing data transmission delay in a carrier aggregation scenario, and improve transmission performance of URLLC data with a high requirement on delay.
Further, in the above embodiment, the data transmission method further includes: and configuring third resource allocation information corresponding to the primary cell, and sending the third resource allocation information to the terminal equipment on the primary cell in the second transmission time interval.
In this embodiment, when the activated secondary cell starts to send the second resource allocation information corresponding to the secondary cell to the terminal device in a second transmission time interval after and adjacent to the first transmission time interval, the primary cell may also be used to send third resource allocation information corresponding to the primary cell to the terminal device in the second transmission time interval, so that the terminal device receives data in a time-frequency resource position corresponding to the third resource allocation information in the primary cell in the second transmission time interval.
It is further understood that the step of configuring and transmitting the third resource allocation information corresponding to the primary cell in the second transmission time interval is not strictly sequential to the step 206, and may be performed first and then or simultaneously.
Fig. 6 shows a schematic block diagram of a data transmission apparatus suitable for a network side device according to an embodiment of the present invention.
As shown in fig. 6, the data transmission apparatus 60 suitable for a network side device according to an embodiment of the present invention includes: a processing module 602, a first configuration module 604, and a second configuration module 606.
The processing module 602 is configured to generate a cell activation signaling, and send the cell activation signaling to a terminal device on a primary cell in a first transmission time interval, so as to activate a corresponding secondary cell; the first configuring module 604 is configured to configure first resource allocation information, and send the first resource allocation information to the terminal device on the primary cell in the first transmission time interval, so that the terminal device receives data on the primary cell and the activated secondary cell according to the first resource allocation information; the second configuring module 606 is configured to configure second resource allocation information corresponding to each activated secondary cell, and send the corresponding second resource allocation information to the terminal device on each secondary cell in a second transmission time interval after and adjacent to the first transmission time interval.
In this embodiment, the network side device sends a cell activation signaling and first resource allocation information to the terminal device on the primary cell in the same transmission time interval (i.e. a first transmission time interval), so that the terminal device activates the corresponding secondary cell according to the cell activation signaling, and at the same time, the terminal device receives data on the primary cell and the activated secondary cell according to the first resource allocation information, that is, sends data to the terminal device by using the activated secondary cell in the transmission time interval in which the cell activation signaling is located, and sends the time-frequency resource position of the sent data in the secondary cell to the terminal device by using the primary cell, that is, completes data scheduling for the secondary cell by using the resource allocation information on the primary cell in the transmission time interval in which the cell activation signaling is located, further, in the next transmission time interval of the first transmission time interval, in other words, in a second transmission time interval located after the first transmission time interval and adjacent to the first transmission time interval, second resource allocation information corresponding to the secondary cell is sent on each activated secondary cell, that is, in the second transmission time interval, the secondary cell is used to send the resource allocation information corresponding to the secondary cell to the terminal device, so that the terminal device receives data at a time-frequency resource position corresponding to the second resource allocation information in each secondary cell in the second transmission time interval, thereby achieving an effect of reducing data transmission delay in a carrier aggregation scenario, and improving transmission performance of URLLC data with a high requirement for delay.
Further, in the above embodiment, the second configuration module 606 is further configured to: and configuring third resource allocation information corresponding to the primary cell, and sending the third resource allocation information to the terminal equipment on the primary cell in the second transmission time interval.
In this embodiment, when the activated secondary cell starts to send the second resource allocation information corresponding to the secondary cell to the terminal device in a second transmission time interval after and adjacent to the first transmission time interval, the primary cell may also be used to send third resource allocation information corresponding to the primary cell to the terminal device in the second transmission time interval, so that the terminal device receives data in a time-frequency resource position corresponding to the third resource allocation information in the primary cell in the second transmission time interval.
Further, in the above embodiment, the cell activation signaling is carried in downlink control information; and the first resource allocation information is information for indicating the resource allocation situation of the primary cell and the activated secondary cell at the same time, or the first resource allocation information is a set of information for indicating the resource allocation situation of the primary cell and information for indicating the resource allocation situation of the activated secondary cell.
In this embodiment, a cell activation signaling for activating the secondary cell may be specifically carried in Downlink Control Information (DCI) and sent to the terminal device on the primary cell, so as to implement resource allocation on the secondary cell after the secondary cell is activated; for the first resource allocation information for the terminal device to accurately receive data in the primary cell and the activated secondary cell, the first resource allocation information may be an individual information, and may be used to indicate the resource allocation situations of the primary cell and the activated secondary cell at the same time, or may be a combined information, that is, a set including a plurality of resource allocation information for indicating the resource allocation situations of the primary cell and the secondary cell, so as to implement diversified indication of the resource allocation situations of the primary cell and the secondary cell, and particularly, it may be ensured that the terminal device receives the resource allocation information for the secondary cell in the activated secondary cell.
In a specific implementation, the Processing module 602, the first configuration module 604, and the second configuration module 606 may be a central Processing unit (cpu) (central Processing unit), a baseband processor, or the like.
Fig. 7 shows a schematic block diagram of a network side device of an embodiment of the invention.
As shown in fig. 7, the network-side device 70 according to the embodiment of the present invention includes the data transmission apparatus 60 according to any one of the above embodiments, and therefore, the network-side device 70 has all the advantages of the data transmission apparatus 60 according to any one of the above embodiments, and is not described herein again.
Further preferably, the network side device 70 may include a base station and/or a base station control device.
Fig. 8 is a flowchart illustrating a data transmission method suitable for a terminal device according to an embodiment of the present invention.
As shown in fig. 8, the data transmission method suitable for the terminal device according to the embodiment of the present invention specifically includes the following steps:
The cell activation signaling is carried in the downlink control information, that is, the cell activation signaling for activating the secondary cell, which is sent by the network side device, may be specifically received in the Downlink Control Information (DCI), so as to implement resource allocation on the secondary cell after activating the secondary cell.
Further, the first resource allocation information is information for indicating resource allocation situations of the primary cell and the activated secondary cell at the same time, or the first resource allocation information is a set of information for indicating resource allocation situations of the primary cell and information for indicating resource allocation situations of the activated secondary cell; that is to say, the first resource allocation information for the terminal device to accurately receive data in the primary cell and the activated secondary cell may be a single piece of information, which can be used to indicate the resource allocation situations of the primary cell and the activated secondary cell at the same time, or a piece of combined information, which is a set including multiple pieces of resource allocation information used to indicate the resource allocation situations of the primary cell and the secondary cell, so as to implement diversified indication of the resource allocation situations of the primary cell and the secondary cell, and in particular, it can be ensured that the terminal device receives the resource allocation information for the secondary cell in the activated secondary cell.
In this embodiment, the terminal device receives, in the same transmission time interval (i.e. the first transmission time interval), the cell activation signaling and the first resource allocation information respectively sent by the network side device on the primary cell, and according to the cell activation signaling, the corresponding secondary cell is brought into an activated state, and according to the first resource allocation information, receives data on the primary cell and the activated secondary cell, that is, the terminal device receives the cell activation signaling sent by the network side device, and receives, in the first transmission time interval in which the cell activation signaling is located, the first resource allocation information sent by the network side device on the primary cell, and receives data in the primary cell and the activated secondary cell by using the first resource allocation information, that is, completes data scheduling on the secondary cell by using the resource allocation information on the primary cell in the transmission time interval in which the cell activation signaling is located, further, the terminal device receives, in a next transmission time interval of the first transmission time interval, that is, in a second transmission time interval located after the first transmission time interval and adjacent to the first transmission time interval, resource allocation information corresponding to the secondary cell and sent by the network side device on each activated secondary cell, so as to receive data at a time-frequency resource location corresponding to the second resource allocation information in each secondary cell in the second transmission time interval, thereby achieving an effect of reducing data transmission delay in a carrier aggregation scenario, and improving transmission performance of URLLC data with a high requirement for delay.
Further, in the above embodiment, the data transmission method further includes: receiving third resource allocation information sent by the network side device on the primary cell in the second transmission time interval; and receiving data sent by the network side equipment on the primary cell in the second transmission time interval according to the third resource allocation information.
In this embodiment, when the terminal device starts to receive, in a second transmission time interval located after the first transmission time interval and adjacent to the first transmission time interval, resource allocation information corresponding to the secondary cell, which is sent by the network-side device on the activated secondary cell, the terminal device may also receive, in the second transmission time interval, third resource allocation information corresponding to the primary cell, which is sent by the network-side device on the primary cell, so as to be able to receive data in a time-frequency resource position, corresponding to the third resource allocation information, in the primary cell in the second transmission time interval.
It is further understood that, the step of receiving the third resource allocation information corresponding to the primary cell at the second transmission time interval and accordingly receiving the data sent by the network side device on the primary cell is not strictly sequential to the step 806 and the step 808, and may be executed first and then or simultaneously.
Fig. 9 shows a schematic block diagram of a terminal device of an embodiment of the present invention.
As shown in fig. 9, a terminal device 90 according to an embodiment of the present invention includes: a transceiver 902, a processor 904, and a memory 906.
The transceiver 902 is configured to receive a cell activation signaling, which is sent by a network side device on a primary cell in a first transmission time interval, to activate a corresponding secondary cell, and receive first resource allocation information, which is sent by the network side device on the primary cell in the first transmission time interval; the processor 904 is configured to perform the following operations when executing the computer program stored in the memory 906: scheduling the transceiver 902 to receive data sent by the network side device on the primary cell and the activated secondary cell according to the first resource allocation information; scheduling the transceiver 902 to receive second resource allocation information, which is sent by the network side device on each activated secondary cell and corresponds to each secondary cell, in a second transmission time interval located after the first transmission time interval and adjacent to the first transmission time interval; and scheduling the transceiver 902 to receive the data sent by the network side device on each corresponding secondary cell according to the second resource allocation information.
In this embodiment, the terminal device receives, in the same transmission time interval (i.e. the first transmission time interval), the cell activation signaling and the first resource allocation information respectively sent by the network side device on the primary cell, and according to the cell activation signaling, the corresponding secondary cell is brought into an activated state, and according to the first resource allocation information, receives data on the primary cell and the activated secondary cell, that is, the terminal device receives the cell activation signaling sent by the network side device, and receives, in the first transmission time interval in which the cell activation signaling is located, the first resource allocation information sent by the network side device on the primary cell, and receives data in the primary cell and the activated secondary cell by using the first resource allocation information, that is, completes data scheduling on the secondary cell by using the resource allocation information on the primary cell in the transmission time interval in which the cell activation signaling is located, further, the terminal device receives, in a next transmission time interval of the first transmission time interval, that is, in a second transmission time interval located after the first transmission time interval and adjacent to the first transmission time interval, resource allocation information corresponding to the secondary cell and sent by the network side device on each activated secondary cell, so as to receive data at a time-frequency resource location corresponding to the second resource allocation information in each secondary cell in the second transmission time interval, thereby achieving an effect of reducing data transmission delay in a carrier aggregation scenario, and improving transmission performance of URLLC data with a high requirement for delay.
Further, in the above embodiments, the processor 904 is configured to execute the computer program stored in the memory 906 to further implement the following operations: in the second transmission time interval, the transceiver 902 is scheduled to receive third resource allocation information sent by the network side device on the primary cell; and scheduling the transceiver 902 to receive the data sent by the network side device on the primary cell in the second transmission time interval according to the third resource allocation information.
In this embodiment, when the terminal device starts to receive, in a second transmission time interval located after the first transmission time interval and adjacent to the first transmission time interval, resource allocation information corresponding to the secondary cell, which is sent by the network-side device on the activated secondary cell, the terminal device may also receive, in the second transmission time interval, third resource allocation information corresponding to the primary cell, which is sent by the network-side device on the primary cell, so as to be able to receive data in a time-frequency resource position, corresponding to the third resource allocation information, in the primary cell in the second transmission time interval.
Further, in the above embodiment, the cell activation signaling is carried in downlink control information; and the first resource allocation information is information for indicating the resource allocation situation of the primary cell and the activated secondary cell at the same time, or the first resource allocation information is a set of information for indicating the resource allocation situation of the primary cell and information for indicating the resource allocation situation of the activated secondary cell.
In this embodiment, specifically, a cell activation signaling for activating the secondary cell, which is sent by the network side device, may be received in Downlink Control Information (DCI), so as to implement resource allocation on the secondary cell after activating the secondary cell; for the first resource allocation information for the terminal device to accurately receive data in the primary cell and the activated secondary cell, the first resource allocation information may be an individual information, and may be used to indicate the resource allocation situations of the primary cell and the activated secondary cell at the same time, or may be a combined information, that is, a set including a plurality of resource allocation information for indicating the resource allocation situations of the primary cell and the secondary cell, so as to implement diversified indication of the resource allocation situations of the primary cell and the secondary cell, and particularly, it may be ensured that the terminal device receives the resource allocation information for the secondary cell in the activated secondary cell.
Further, in some embodiments described above, any process or method descriptions in flowcharts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and the scope of the preferred embodiments of the present invention includes additional implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present invention.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable storage medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
In the description of the present specification, the terms "first", "second", "third", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and specific meanings of the above terms in the disclosed embodiments may be understood according to specific situations by those of ordinary skill in the art.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (13)
1. A data transmission method is suitable for network side equipment, and is characterized in that the data transmission method comprises the following steps:
generating a cell activation signaling, and sending the cell activation signaling to a terminal device on a primary cell in a first transmission time interval to activate a corresponding secondary cell;
configuring first resource allocation information, and sending the first resource allocation information to the terminal device on the primary cell in the first transmission time interval, so that the terminal device receives data on the primary cell and the activated secondary cell according to the first resource allocation information;
configuring second resource allocation information corresponding to each activated secondary cell, and sending the corresponding second resource allocation information to the terminal equipment on each secondary cell in a second transmission time interval which is after and adjacent to the first transmission time interval.
2. The data transmission method according to claim 1, further comprising:
and configuring third resource allocation information corresponding to the primary cell, and sending the third resource allocation information to the terminal equipment on the primary cell in the second transmission time interval.
3. The data transmission method according to claim 1 or 2,
the cell activation signaling is carried in downlink control information; and
the first resource allocation information is information for indicating resource allocation conditions of the primary cell and the activated secondary cell at the same time, or the first resource allocation information is a set of information for indicating resource allocation conditions of the primary cell and information for indicating resource allocation conditions of the activated secondary cell.
4. A data transmission method is suitable for terminal equipment, and is characterized in that the data transmission method comprises the following steps:
receiving a cell activation signaling sent by a network side device on a primary cell in a first transmission time interval to activate a corresponding secondary cell, and receiving first resource allocation information sent by the network side device on the primary cell in the first transmission time interval;
receiving data sent by the network side equipment on the primary cell and the activated secondary cell according to the first resource allocation information;
receiving second resource allocation information, which is sent by the network side device on each activated secondary cell and corresponds to each secondary cell, in a second transmission time interval located after the first transmission time interval and adjacent to the first transmission time interval;
and respectively receiving the data sent by the network side equipment on each corresponding secondary cell according to the second resource allocation information.
5. The data transmission method according to claim 4, further comprising:
receiving third resource allocation information sent by the network side device on the primary cell in the second transmission time interval;
and receiving data sent by the network side equipment on the primary cell in the second transmission time interval according to the third resource allocation information.
6. The data transmission method according to claim 4 or 5,
the cell activation signaling is carried in downlink control information; and
the first resource allocation information is information for indicating resource allocation conditions of the primary cell and the activated secondary cell at the same time, or the first resource allocation information is a set of information for indicating resource allocation conditions of the primary cell and information for indicating resource allocation conditions of the activated secondary cell.
7. A data transmission apparatus, adapted to a network side device, wherein the data transmission apparatus includes:
a processing module, configured to generate a cell activation signaling, and send the cell activation signaling to a terminal device on a primary cell in a first transmission time interval, so as to activate a corresponding secondary cell;
a first configuration module, configured to configure first resource allocation information, and send the first resource allocation information to the terminal device on the primary cell in the first transmission time interval, so that the terminal device receives data on the primary cell and the activated secondary cell according to the first resource allocation information;
a second configuring module, configured to configure second resource allocation information corresponding to each activated secondary cell, and send the corresponding second resource allocation information to the terminal device on each secondary cell in a second transmission time interval after and adjacent to the first transmission time interval.
8. The data transmission apparatus of claim 7, wherein the second configuration module is further configured to:
and configuring third resource allocation information corresponding to the primary cell, and sending the third resource allocation information to the terminal equipment on the primary cell in the second transmission time interval.
9. The data transmission apparatus according to claim 7 or 8,
the cell activation signaling is carried in downlink control information; and
the first resource allocation information is information for indicating resource allocation conditions of the primary cell and the activated secondary cell at the same time, or the first resource allocation information is a set of information for indicating resource allocation conditions of the primary cell and information for indicating resource allocation conditions of the activated secondary cell.
10. A network-side device, comprising: a data transmission arrangement as claimed in any one of claims 7 to 9.
11. A terminal device, comprising:
a transceiver, configured to receive a cell activation signaling sent by a network side device on a primary cell in a first transmission time interval to activate a corresponding secondary cell, and receive first resource allocation information sent by the network side device on the primary cell in the first transmission time interval;
a processor and a memory, the processor being configured to implement the following when executing a computer program stored in the memory:
scheduling the transceiver to receive data sent by the network side equipment on the primary cell and the activated secondary cell according to the first resource allocation information;
scheduling the transceiver to receive second resource allocation information, which is sent by the network side device on each activated secondary cell and corresponds to each secondary cell, in a second transmission time interval which is located after the first transmission time interval and adjacent to the first transmission time interval;
and scheduling the transceiver to respectively receive the data sent by the network side equipment on each corresponding auxiliary cell according to the second resource allocation information.
12. The terminal device of claim 11, wherein the processor, when executing the computer program stored in the memory, is further configured to:
in the second transmission time interval, scheduling the transceiver to receive third resource allocation information sent by the network side device on the primary cell;
and scheduling the transceiver to receive the data sent by the network side equipment on the primary cell in the second transmission time interval according to the third resource allocation information.
13. The terminal device according to claim 11 or 12,
the cell activation signaling is carried in downlink control information; and
the first resource allocation information is information for indicating resource allocation conditions of the primary cell and the activated secondary cell at the same time, or the first resource allocation information is a set of information for indicating resource allocation conditions of the primary cell and information for indicating resource allocation conditions of the activated secondary cell.
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