CN112218391A - Data transmission method, network side equipment and mobile terminal - Google Patents
Data transmission method, network side equipment and mobile terminal Download PDFInfo
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- CN112218391A CN112218391A CN201910629312.1A CN201910629312A CN112218391A CN 112218391 A CN112218391 A CN 112218391A CN 201910629312 A CN201910629312 A CN 201910629312A CN 112218391 A CN112218391 A CN 112218391A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/27—Transitions between radio resource control [RRC] states
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
- H04L1/0017—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy where the mode-switching is based on Quality of Service requirement
- H04L1/0018—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy where the mode-switching is based on Quality of Service requirement based on latency requirement
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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
- H04W72/20—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
Abstract
The embodiment of the invention provides a data transmission method, network side equipment and a mobile terminal. The method comprises the following steps: sending an RRC reconfiguration message and multi-subband starting DCI to the mobile terminal, wherein the RRC reconfiguration message carries a DCI interval, so that the mobile terminal determines a plurality of first resource positions for DCI blind detection according to the DCI interval and the multi-subband starting DCI; and sending a downlink radio frame to the mobile terminal, wherein the downlink radio frame carries a plurality of scheduling DCIs, so that the mobile terminal performs DCI blind detection on the downlink radio frame at a plurality of first resource positions to obtain a second resource position indicated by each scheduling DCI in the plurality of scheduling DCIs, and performs data transmission at the plurality of second resource positions. Under the condition of poor network state, the mobile terminal can receive downlink data with high reliability in time, and the network side equipment can receive uplink data with high reliability in time, so that the data transmission delay is low and the reliability is high.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a data transmission method, a network side device, and a mobile terminal.
Background
In the power industry, a Time Division-Long Term Evolution (TD-LTE) 230 power consumption information acquisition system is generally used for data transmission. The TD-LTE230 power utilization information acquisition system is a wireless communication system which is based on a TD-LTE technology, combines advanced technologies such as spectrum sensing, carrier aggregation, interference demodulation and software radio, uses a plurality of discrete sub-bands in a 230MHz frequency band in the power industry, and is innovated, researched and developed and deeply customized. The 230MHz frequency band refers to a frequency band with the frequency of 223.025-235.000 MHz, the frequency band is divided into a plurality of sub-bands, the bandwidth of each sub-band is 25KHZ, and industries such as electric power, gas, civil air defense and water service use different discrete sub-bands for data transmission. The total number of sub-bands used by the TD-LTE230 power utilization information acquisition system for data transmission in the power industry is 40, and the sub-bands are distributed discretely and non-equidistantly.
In the TD-LTE230 power consumption Information acquisition system, both uplink and Downlink data transmission are indicated by the base station eNB sending Downlink Control Information (DCI) to the mobile terminal UE. According to the difference of the UE capability, the UE can be divided into single sub-band UE and multi-sub-band UE. For the multi-subband UE, the uplink and downlink transmission process of the data is as follows:
1. the eNB sends multi-subband starting DCI to the UE; the multi-subband starting DCI carries a starting subband and the maximum number of the occupied subbands of the DCI, the starting subband is used for indicating the starting subband of a Physical Downlink Control Channel (PDCCH) detection space to the UE and occupies 9 bits, and the maximum number of the occupied subbands of the DCI is used for indicating the maximum number of the subbands occupied by the PDCCH detection space from the starting subband to the UE;
2. after the UE receives the multi-sub-band starting DCI, determining a PDCCH detection space for DCI blind detection according to a first starting sub-band carried in the multi-sub-band starting DCI and the maximum number of sub-bands occupied by the DCI;
3. sending a downlink radio frame to the UE, wherein the downlink radio frame carries one or two scheduling DCIs; the scheduling DCI is used for indicating resource positions and the like for data transmission to the UE, the scheduling DCI is downlink scheduling DCI or uplink scheduling DCI, and if the scheduling DCI is the downlink scheduling DCI, downlink data sent to the UE by the eNB is also carried in a downlink wireless frame;
4. after receiving the downlink radio frame, the UE performs DCI blind detection on the downlink radio frame in a PDCCH detection space to obtain a resource position indicated by scheduling DCI;
5. the UE performs data transmission at a resource location; that is, if the scheduling DCI is downlink scheduling DCI, receiving downlink data carried in a downlink radio frame at a resource position indicated by the downlink scheduling DCI, constructing a response message according to the downlink data, encapsulating the response message as uplink data in a next radio frame, and transmitting the response message to the eNB; and if the scheduling DCI is the uplink scheduling DCI, constructing uplink data package in the current downlink wireless frame or the next wireless frame, and sending the uplink data package to the eNB at the resource position indicated by the uplink scheduling DCI.
For the above process, if the UE receives downlink data or transmits uplink data at only one resource location at the same time, if the network status is poor, the UE is difficult to receive the downlink data with high reliability in time, and the eNB is difficult to receive the uplink data with high reliability in time, which results in high data transmission delay and low reliability.
Disclosure of Invention
The embodiment of the invention provides a data transmission method, network side equipment and a mobile terminal, which are used for solving the problems of high time delay and low reliability of the existing data transmission.
In a first aspect, an embodiment of the present invention provides a data transmission method, including:
sending an RRC reconfiguration message and multi-subband starting DCI to a mobile terminal, wherein the RRC reconfiguration message carries a DCI interval, so that the mobile terminal determines a plurality of first resource positions for DCI blind detection according to the DCI interval and the multi-subband starting DCI;
and sending a downlink radio frame to the mobile terminal, wherein the downlink radio frame carries a plurality of scheduling DCIs, so that the mobile terminal performs DCI blind detection on the downlink radio frame at the plurality of first resource positions to obtain a second resource position indicated by each scheduling DCI in the plurality of scheduling DCIs, and performs data transmission at the plurality of second resource positions.
In a second aspect, an embodiment of the present invention provides a data transmission method, including:
receiving an RRC reconfiguration message and multi-subband starting DCI (downlink control information), which are sent by network side equipment, wherein the RRC reconfiguration message carries a DCI interval, and determining a plurality of first resource positions for DCI blind detection according to the DCI interval and the multi-subband starting DCI;
and receiving a downlink radio frame sent by the network side equipment, wherein the downlink radio frame carries a plurality of scheduling DCIs, performing DCI blind detection on the downlink radio frame at the plurality of first resource positions to obtain a second resource position indicated by each scheduling DCI in the plurality of scheduling DCIs, and performing data transmission at the plurality of second resource positions.
In a third aspect, an embodiment of the present invention provides a network side device, including:
a first sending module, configured to send an RRC reconfiguration message and multi-subband starting DCI to a mobile terminal, where the RRC reconfiguration message carries a DCI interval, so that the mobile terminal determines, according to the DCI interval and the multi-subband starting DCI, a plurality of first resource locations for DCI blind detection;
a second sending module, configured to send a downlink radio frame to the mobile terminal, where the downlink radio frame carries multiple scheduling DCIs, so that the mobile terminal performs DCI blind detection on the downlink radio frame at the multiple first resource locations to obtain a second resource location indicated by each scheduling DCI in the multiple scheduling DCIs, and performs data transmission at the multiple second resource locations.
In a fourth aspect, an embodiment of the present invention provides a mobile terminal, including:
the first receiving module is used for receiving an RRC reconfiguration message and multi-subband starting DCI (downlink control information) sent by network side equipment, wherein the RRC reconfiguration message carries a DCI interval, and a plurality of first resource positions for DCI blind detection are determined according to the DCI interval and the multi-subband starting DCI;
a second receiving module, configured to receive a downlink radio frame sent by the network side device, where the downlink radio frame carries multiple scheduling DCIs, perform DCI blind detection on the downlink radio frame at multiple first resource locations to obtain a second resource location indicated by each scheduling DCI in the multiple scheduling DCIs, and perform data transmission at multiple second resource locations.
In a fifth aspect, an embodiment of the present invention provides an electronic device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor implements the steps of the method according to the first aspect or the second aspect when executing the program.
In a sixth aspect, embodiments of the present invention provide a non-transitory computer readable storage medium, on which a computer program is stored, which when executed by a processor, implements the steps of the method as provided in the first or second aspect.
According to the data transmission method, the network side device and the mobile terminal provided by the embodiment of the invention, the network side device simultaneously indicates a plurality of second resource positions to the mobile terminal for data transmission, and the mobile terminal can simultaneously receive downlink data or send uplink data at the plurality of second resource positions, so that the mobile terminal can timely receive the downlink data with high reliability under the condition of poor network state, and the network side device can timely receive the uplink data with high reliability, so that the data transmission delay is low and the reliability is high.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a flowchart of a data transmission method according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a radio frame according to an embodiment of the present invention;
fig. 3 is a flowchart of a data transmission method according to another embodiment of the present invention;
fig. 4 is a schematic structural diagram of a network-side device according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention;
fig. 6 is a schematic physical structure diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a flowchart of a data transmission method according to an embodiment of the present invention, and as shown in fig. 1, to solve the above technical problem, an embodiment of the present invention provides a data transmission method, where an execution subject of the data transmission method is a network side device, for example, a 5G base station, and the method includes:
Specifically, after the eNB and the UE establish Radio Resource Control (RRC) RRC connection, if an air interface parameter needs to be modified, the eNB sends an RRC reconfiguration message to the UE, so that the UE performs RRC connection reconfiguration according to the received RRC reconfiguration message.
In the embodiment of the present invention, the eNB adds the DCI interval to the RRC reconfiguration message, that is, the RRC reconfiguration message carries the DCI interval, and sends the RRC reconfiguration message carrying the DCI interval and the multi-subband starting DCI to the UE. It should be noted that the eNB may send the RRC reconfiguration message first, and then send the multi-subband starting DCI; or may send the multi-subband initiating DCI first and then send the RRC reconfiguration message, and the sending timings of the two embodiments of the present invention are not particularly limited.
First, multi-subband starting DCI will be described. The multi-subband starting DCI carries a starting subband (a first starting subband) and a DCI maximum occupied subband number. The first starting subband is used for indicating a starting subband of a PDCCH detection space for DCI blind detection to the UE, and usually occupies 9 bits, and the DCI maximum occupied subband number is used for indicating a maximum subband number occupied by the PDCCH detection space from the starting subband to the UE, and usually occupies 3 bits.
Then, the DCI interval will be explained. The DCI interval is used to indicate a sub-band spaced a certain distance from a first starting sub-band carried in the multi-sub-band starting DCI, where the certain distance may be the number of sub-bands. For example, the first starting subband is S, the DCI interval is N, and the DCI interval N indicates a second starting subband S + N that is N-1 subbands away from the first starting subband S. It should be noted that the maximum number of occupied subbands is smaller than the DCI interval.
And after receiving the RRC reconfiguration message and the multi-subband starting DCI, the UE determines a plurality of first resource positions for DCI blind detection according to the DCI interval and the multi-subband starting DCI carried in the RRC reconfiguration message.
If the maximum number of the sub-bands occupied by the DCI is M, all the sub-bands from the first starting sub-band S to the sub-band S + M-1 are first PDCCH detection spaces, and all the sub-bands from the second starting sub-band S + N to the sub-band S + N + M-1 are second PDCCH detection spaces.
For example, the 40 discrete subbands used for data transmission in the power industry are respectively referred to as subband 1, subband 2, …, and subband 40, and if the first starting subband carried in the multi-subband activation DCI is subband 2, the maximum occupied subband number of the DCI carried in the multi-subband activation DCI is 3, and the DCI interval carried in the RRC reconfiguration message is 5, it may be determined that the first PDCCH detection space is subband 2, subband 3, and subband 4, and the second PDCCH detection space is subband 7, subband 8, and subband 9. At this time, the starting subband 2 in the first PDCCH detection space is referred to as a first resource location, and the starting subband 7 in the second PDCCH detection space is referred to as a second first resource location.
After determining the two first resource positions, the UE prepares to perform DCI blind detection at the two first resource positions. That is, DCI blind detection is prepared at subband 2, and DCI blind detection is prepared at subband 7.
102, sending a downlink radio frame to the mobile terminal, where the downlink radio frame carries multiple scheduling DCIs, so that the mobile terminal performs DCI blind detection on the downlink radio frame at the multiple first resource locations to obtain a second resource location indicated by each scheduling DCI in the multiple scheduling DCIs, and performs data transmission at the multiple second resource locations.
Specifically, an eNB sends a downlink radio frame to a UE, fig. 2 is a schematic structural diagram of a radio frame provided in the embodiment of the present invention, and as shown in fig. 2, the radio frame is composed of 5 subframes with a length of 5ms, where subframe 0 is a downlink subframe; subframes 2, 3, 4 are uplink subframes; subframe 1 is a special subframe, and includes 3 fields, which are a Downlink Pilot Time Slot (DwPTS), a Guard Period (GP), and an Uplink Pilot Time Slot (UpPTS), respectively.
In the embodiment of the present invention, the downlink radio frame carries a plurality of scheduling DCIs, specifically two scheduling DCIs. Each scheduling DCI carries a starting subband number, a Hybrid Automatic Repeat Request (HARQ) process number, a Modulation and Coding Scheme (MCS), and the like, and is configured to indicate a resource location (a second resource location) for data transmission to the UE. The two pieces of scheduling DCI carry different starting subband numbers, the number of the subbands can be the same or different, the number of the HARQ processes is the same, and the MCS can be the same or different, wherein, the MCS and the number of the subbands are set according to the channel condition. Since the starting subband numbers carried in the two scheduling DCIs are different, the second resource positions indicated by the two scheduling DCIs are different.
It should be noted that the two scheduling DCIs may be both downlink scheduling DCIs and uplink scheduling DCIs, which is not specifically limited in this embodiment of the present invention.
The two scheduling DCIs are respectively called a first DCI and a second DCI, and if the first DCI and the second DCI are downlink scheduling DCIs, the downlink radio frame also carries first downlink data corresponding to the first DCI and second downlink data corresponding to the second DCI, wherein the first downlink data and the second downlink data are downlink data sent to the UE by the eNB and are the same. It should be noted that the first DCI, the first downlink data, the second DCI, and the second downlink data are all encapsulated in the subframe 0 and the DwPTS, which is not specifically limited in this embodiment of the present invention.
After receiving the downlink radio frame, the UE performs blind detection on the downlink radio frame at two first resource positions to obtain a second resource position indicated by the first DCI and a second resource position indicated by the second DCI carried in the downlink radio frame, and receives first downlink data and second downlink data sent by the eNB at the two second resource positions respectively.
It can be understood that, due to the processing of the procedure, the UE may receive downlink data at two second resource locations at different times, but as long as downlink data is received at one of the second resource locations, the UE considers that the downlink data is successfully received and returns a response message indicating that the downlink data is successfully received to the eNB. For the eNB, as long as one response message is received, it is considered that the downlink data has been successfully received.
If the first DCI and the second DCI are both uplink scheduling DCI, after receiving the downlink radio frame, the UE performs blind detection on the downlink radio frame at two first resource positions to obtain a second resource position indicated by the first DCI and a second resource position indicated by the second DCI carried in the downlink radio frame, and respectively transmits first uplink data and second uplink data at the two second resource positions, wherein the first uplink data and the second uplink data are the same. It should be noted that, both the first DCI and the second DCI are encapsulated in the UpPTS and any one or more frames of the subframes 2, 3, and 4, which is not specifically limited in this embodiment of the present invention.
It can be understood that, due to the program processing, the time when the eNB receives the two uplink data may be different, but as long as one of the uplink data is successfully received, the uplink data reception is considered to be successful.
In the data transmission method provided in the embodiment of the present invention, a network side device sends an RRC reconfiguration message carrying a DCI interval and a multi-subband starting DCI to a mobile terminal, so that the mobile terminal determines a plurality of first resource locations for DCI blind detection according to the DCI interval and the multi-subband starting DCI, and sends a downlink radio frame carrying a plurality of scheduling DCIs to the mobile terminal through the network side device, so that the mobile terminal performs DCI blind detection on the downlink radio frame at the plurality of first resource locations to obtain a second resource location indicated by each scheduling DCI in the plurality of scheduling DCIs, and performs data transmission at the plurality of second resource locations. Because the network side equipment indicates a plurality of second resource positions to the mobile terminal for data transmission at the same time, the mobile terminal can receive downlink data or send uplink data at the plurality of second resource positions at the same time, so that the mobile terminal can receive the downlink data with high reliability in time under the condition of poor network state, and the network side equipment can receive the uplink data with high reliability in time, so that the data transmission delay is low and the reliability is high.
Based on any of the above embodiments, if all the plurality of scheduling DCIs are downlink scheduling DCIs, the downlink radio frame further carries a plurality of downlink data corresponding to the plurality of scheduling DCIs one to one, and the plurality of downlink data are the same.
Specifically, the plurality of scheduling DCIs are specifically two scheduling DCIs, which are respectively referred to as a first DCI and a second DCI, and if the first DCI and the second DCI are both downlink scheduling DCIs, the downlink radio frame also carries first downlink data corresponding to the first DCI and second downlink data corresponding to the second DCI, where the first downlink data and the second downlink data are both downlink data sent by the eNB to the UE, and the first downlink data and the second downlink data are the same. It should be noted that the first DCI, the first downlink data, the second DCI, and the second downlink data are all encapsulated in the subframe 0 and the DwPTS, which is not specifically limited in this embodiment of the present invention.
After receiving the downlink radio frame, the UE performs blind detection on the downlink radio frame at two first resource positions to obtain a second resource position indicated by the first DCI and a second resource position indicated by the second DCI carried in the downlink radio frame, and receives first downlink data and second downlink data sent by the eNB at the two second resource positions respectively.
It can be understood that, due to the processing of the procedure, the UE may receive downlink data at two second resource locations at different times, but as long as downlink data is received at one of the second resource locations, the UE considers that the downlink data is successfully received and returns a response message indicating that the downlink data is successfully received to the eNB. For the eNB, as long as one response message is received, it is considered that the downlink data has been successfully received.
Based on any of the above embodiments, fig. 3 is a flowchart of a data transmission method according to another embodiment of the present invention, and as shown in fig. 3, to solve the above technical problem, an embodiment of the present invention provides a data transmission method, an execution subject of which is a mobile terminal, for example, a 5G terminal, and the method includes:
Specifically, the eNB sends the RRC reconfiguration message carrying the DCI interval and the multi-subband starting DCI to the UE. The multi-subband starting DCI carries a starting subband (a first starting subband) and a DCI maximum occupied subband number. The DCI interval is used to indicate a sub-band that is spaced a certain distance from a first starting sub-band carried in the multi-sub-band starting DCI.
And after receiving the RRC reconfiguration message and the multi-subband starting DCI, the UE determines two first resource positions for DCI blind detection according to the DCI interval and the multi-subband starting DCI carried in the RRC reconfiguration message.
Specifically, the eNB sends a downlink radio frame to the UE, where the downlink radio frame carries two scheduling DCIs, each of the scheduling DCIs is used to indicate a resource location (a second resource location) for data transmission to the UE, and the two scheduling DCIs may be both downlink scheduling DCIs and uplink scheduling DCIs, which is not specifically limited in this embodiment of the present invention.
The two scheduling DCIs are respectively called a first DCI and a second DCI, and if the first DCI and the second DCI are downlink scheduling DCIs, the downlink radio frame also carries first downlink data corresponding to the first DCI and second downlink data corresponding to the second DCI, wherein the first downlink data and the second downlink data are downlink data sent to the UE by the eNB and are the same.
After receiving the downlink radio frame, the UE performs blind detection on the downlink radio frame at two first resource positions to obtain a second resource position indicated by the first DCI and a second resource position indicated by the second DCI carried in the downlink radio frame, and receives first downlink data and second downlink data sent by the eNB at the two second resource positions respectively.
It can be understood that, due to the processing of the procedure, the UE may receive downlink data at two second resource locations at different times, but as long as downlink data is received at one of the second resource locations, the UE considers that the downlink data is successfully received and returns a response message indicating that the downlink data is successfully received to the eNB. For the eNB, as long as one response message is received, it is considered that the downlink data has been successfully received.
If the first DCI and the second DCI are both uplink scheduling DCI, after receiving the downlink radio frame, the UE performs blind detection on the downlink radio frame at two first resource positions to obtain a second resource position indicated by the first DCI and a second resource position indicated by the second DCI carried in the downlink radio frame, and respectively transmits first uplink data and second uplink data at the two second resource positions, wherein the first uplink data and the second uplink data are the same.
It can be understood that, due to the program processing, the time when the eNB receives the two uplink data may be different, but as long as one of the uplink data is successfully received, the uplink data reception is considered to be successful.
In the data transmission method provided in the embodiment of the present invention, a network side device sends an RRC reconfiguration message carrying a DCI interval and a multi-subband starting DCI to a mobile terminal, so that the mobile terminal determines a plurality of first resource locations for DCI blind detection according to the DCI interval and the multi-subband starting DCI, and sends a downlink radio frame carrying a plurality of scheduling DCIs to the mobile terminal through the network side device, so that the mobile terminal performs DCI blind detection on the downlink radio frame at the plurality of first resource locations to obtain a second resource location indicated by each scheduling DCI in the plurality of scheduling DCIs, and performs data transmission at the plurality of second resource locations. Because the network side equipment indicates a plurality of second resource positions to the mobile terminal for data transmission at the same time, the mobile terminal can receive downlink data or send uplink data at the plurality of second resource positions at the same time, so that the mobile terminal can receive the downlink data with high reliability in time under the condition of poor network state, and the network side equipment can receive the uplink data with high reliability in time, so that the data transmission delay is low and the reliability is high.
Based on any of the above embodiments, the embodiments of the present invention describe multi-subband starting DCI, where the multi-subband starting DCI carries a first starting subband and a maximum number of DCI occupied subbands.
Specifically, the multi-subband starting DCI carries a starting subband (a first starting subband) and a DCI maximum occupied subband number. The first starting subband is used for indicating a starting subband of a PDCCH detection space for DCI blind detection to the UE, and usually occupies 9 bits, and the DCI maximum occupied subband number is used for indicating a maximum subband number occupied by the PDCCH detection space from the starting subband to the UE, and usually occupies 3 bits.
Based on any of the above embodiments, determining, according to the DCI interval and the multi-subband starting DCI, a plurality of first resource locations for DCI blind detection includes:
and determining a second starting sub-band according to the DCI interval and a first starting sub-band carried in the multi-sub-band starting DCI, and taking the first starting sub-band and the second starting sub-band as the plurality of first resource positions.
Specifically, the multi-subband starting DCI carries a starting subband (a first starting subband) and a DCI maximum occupied subband number, and the DCI interval is used to indicate a subband spaced by a specific distance from the first starting subband carried in the multi-subband starting DCI, where the specific distance may be the subband number. For example, the first starting subband is S, the DCI interval is N, and the DCI interval N indicates a second starting subband S + N that is N-1 subbands away from the first starting subband S. It should be noted that the maximum number of occupied subbands is smaller than the DCI interval.
And after receiving the RRC reconfiguration message and the multi-subband starting DCI, the UE determines a plurality of first resource positions for DCI blind detection according to the DCI interval and the multi-subband starting DCI carried in the RRC reconfiguration message.
If the maximum number of the sub-bands occupied by the DCI is M, all the sub-bands from the first starting sub-band S to the sub-band S + M-1 are a first PDCCH detection space, and the second starting sub-band S + N to the sub-band S + N + M-1 are a second PDCCH detection space.
For example, the 40 discrete subbands used for data transmission in the power industry are respectively referred to as subband 1, subband 2, …, and subband 40, and if the first starting subband carried in the multi-subband activation DCI is subband 2, the maximum occupied subband number of the DCI carried in the multi-subband activation DCI is 3, and the DCI interval carried in the RRC reconfiguration message is 5, it may be determined that the first PDCCH detection space is subband 2, subband 3, and subband 4, and the second PDCCH detection space is subband 7, subband 8, and subband 9. At this time, the starting subband 2 in the first PDCCH detection space is referred to as a first resource location, and the starting subband 7 in the second PDCCH detection space is referred to as a second first resource location.
After determining the two first resource positions, the UE prepares to perform DCI blind detection at the two first resource positions. That is, DCI blind detection is prepared at subband 2, and DCI blind detection is prepared at subband 7. Based on any of the above embodiments, if all the plurality of scheduling DCIs are downlink scheduling DCIs, the downlink radio frame further carries a plurality of downlink data corresponding to the plurality of scheduling DCIs one to one, and the plurality of downlink data are the same.
Specifically, the plurality of scheduling DCIs are specifically two scheduling DCIs, which are respectively referred to as a first DCI and a second DCI, and if the first DCI and the second DCI are both downlink scheduling DCIs, the downlink radio frame also carries first downlink data corresponding to the first DCI and second downlink data corresponding to the second DCI, where the first downlink data and the second downlink data are both downlink data sent by the eNB to the UE, and the first downlink data and the second downlink data are the same. It should be noted that the first DCI, the first downlink data, the second DCI, and the second downlink data are all encapsulated in the subframe 0 and the DwPTS, which is not specifically limited in this embodiment of the present invention.
After receiving the downlink radio frame, the UE performs blind detection on the downlink radio frame at two first resource positions to obtain a second resource position indicated by the first DCI and a second resource position indicated by the second DCI carried in the downlink radio frame, and receives first downlink data and second downlink data sent by the eNB at the two second resource positions respectively.
It can be understood that, due to the processing of the procedure, the UE may receive downlink data at two second resource locations at different times, but as long as downlink data is received at one of the second resource locations, the UE considers that the downlink data is successfully received and returns a response message indicating that the downlink data is successfully received to the eNB. For the eNB, as long as one response message is received, it is considered that the downlink data has been successfully received.
Based on any of the above embodiments, fig. 4 is a schematic structural diagram of a network-side device according to an embodiment of the present invention, and as shown in fig. 4, the network-side device includes:
a first sending module 401, configured to send an RRC reconfiguration message and multi-subband starting DCI to a mobile terminal, where the RRC reconfiguration message carries a DCI interval, so that the mobile terminal determines, according to the DCI interval and the multi-subband starting DCI, a plurality of first resource locations for DCI blind detection; a second sending module 402, configured to send a downlink radio frame to the mobile terminal, where the downlink radio frame carries multiple scheduling DCIs, so that the mobile terminal performs DCI blind detection on the downlink radio frame at multiple first resource locations to obtain a second resource location indicated by each scheduling DCI in the multiple scheduling DCIs, and performs data transmission at multiple second resource locations.
Specifically, a first sending module 401 in the eNB sends an RRC reconfiguration message carrying a DCI interval and a multi-subband starting DCI to the UE. And after receiving the RRC reconfiguration message and the multi-subband starting DCI, the UE determines two first resource positions for DCI blind detection according to the DCI interval and the multi-subband starting DCI carried in the RRC reconfiguration message.
A second sending module 402 in the eNB sends a downlink radio frame to the UE, in this embodiment of the present invention, the downlink radio frame carries two scheduling DCIs, each scheduling DCI is used to indicate a resource location (a second resource location) for data transmission to the UE, and the two scheduling DCIs may be both downlink scheduling DCIs or may be both uplink scheduling DCIs, which is not specifically limited in this embodiment of the present invention.
And the UE performs DCI blind detection on the downlink radio frame at the two first resource positions to obtain a second resource position indicated by each scheduling DCI in the two scheduling DCIs, and performs data transmission at the two second resource positions.
In the network side device provided in the embodiment of the present invention, the first sending module 401 sends the RRC reconfiguration message carrying the DCI interval and the multi-subband starting DCI to the mobile terminal, so that the mobile terminal determines a plurality of first resource locations for DCI blind detection according to the DCI interval and the multi-subband starting DCI, and sends the downlink radio frame carrying a plurality of scheduling DCIs to the mobile terminal through the second sending module 402, so that the mobile terminal performs DCI blind detection on the downlink radio frame at the plurality of first resource locations to obtain a second resource location indicated by each scheduling DCI in the plurality of scheduling DCIs, and performs data transmission at the plurality of second resource locations. Because the network side equipment indicates a plurality of second resource positions to the mobile terminal for data transmission at the same time, the mobile terminal can receive downlink data or send uplink data at the plurality of second resource positions at the same time, so that the mobile terminal can receive the downlink data with high reliability in time under the condition of poor network state, and the network side equipment can receive the uplink data with high reliability in time, so that the data transmission delay is low and the reliability is high.
Based on any of the above embodiments, fig. 5 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention, and as shown in fig. 5, the mobile terminal includes:
a first receiving module 501, configured to receive an RRC reconfiguration message and multi-subband starting DCI sent by a network side device, where the RRC reconfiguration message carries a DCI interval, and determine a plurality of first resource locations for DCI blind detection according to the DCI interval and the multi-subband starting DCI; a second receiving module 502, configured to receive a downlink radio frame sent by the network side device, where the downlink radio frame carries multiple scheduling DCIs, perform DCI blind detection on the downlink radio frame at multiple first resource locations to obtain a second resource location indicated by each scheduling DCI in the multiple scheduling DCIs, and perform data transmission at multiple second resource locations.
Specifically, the eNB sends the RRC reconfiguration message carrying the DCI interval and the multi-subband starting DCI to the UE. After receiving the RRC reconfiguration message and the multi-subband starting DCI, the first receiving module 501 in the UE determines two first resource locations for DCI blind detection according to the DCI interval and the multi-subband starting DCI carried in the RRC reconfiguration message.
Specifically, the eNB sends a downlink radio frame to the UE, where the downlink radio frame carries two scheduling DCIs. Each scheduling DCI is used to indicate a resource location (a second resource location) for data transmission to the UE, and the two scheduling DCIs may be both downlink scheduling DCIs and uplink scheduling DCIs, which is not specifically limited in this embodiment of the present invention.
The two scheduling DCIs are respectively called a first DCI and a second DCI, and if the first DCI and the second DCI are downlink scheduling DCIs, the downlink radio frame also carries first downlink data corresponding to the first DCI and second downlink data corresponding to the second DCI, wherein the first downlink data and the second downlink data are downlink data sent to the UE by the eNB and are the same.
After receiving the downlink radio frame, the second receiving module 502 in the UE performs blind detection on the downlink radio frame at the two first resource positions to obtain a second resource position indicated by the first DCI and a second resource position indicated by the second DCI, which are carried in the downlink radio frame, and receives the first downlink data and the second downlink data sent by the eNB at the two second resource positions, respectively.
It can be understood that, due to the processing of the procedure, the UE may receive downlink data at two second resource locations at different times, but as long as downlink data is received at one of the second resource locations, the UE considers that the downlink data is successfully received and returns a response message indicating that the downlink data is successfully received to the eNB. For the eNB, as long as one response message is received, it is considered that the downlink data has been successfully received.
If the first DCI and the second DCI are both uplink scheduling DCI, after receiving the downlink radio frame, the UE performs blind detection on the downlink radio frame at two first resource positions to obtain a second resource position indicated by the first DCI and a second resource position indicated by the second DCI carried in the downlink radio frame, and respectively transmits first uplink data and second uplink data at the two second resource positions, wherein the first uplink data and the second uplink data are the same.
It can be understood that, due to the program processing, the time when the eNB receives the two uplink data may be different, but as long as one of the uplink data is successfully received, the uplink data reception is considered to be successful.
In the mobile terminal provided in the embodiment of the present invention, the first receiving module 501 receives an RRC reconfiguration message and a multi-subband starting DCI sent by a network side device, where the RRC reconfiguration message carries a DCI interval, so that the mobile terminal determines a plurality of first resource locations for DCI blind detection according to the DCI interval and the multi-subband starting DCI, receives a downlink radio frame carrying a plurality of scheduling DCIs sent by the network side device through the second receiving module 502, performs DCI blind detection on the downlink radio frame at the plurality of first resource locations, obtains a second resource location indicated by each scheduling DCI in the plurality of scheduling DCIs, and performs data transmission at the plurality of second resource locations. Because the network side equipment indicates a plurality of second resource positions to the mobile terminal for data transmission at the same time, the mobile terminal can receive downlink data or send uplink data at the plurality of second resource positions at the same time, so that the mobile terminal can receive the downlink data with high reliability in time under the condition of poor network state, and the network side equipment can receive the uplink data with high reliability in time, so that the data transmission delay is low and the reliability is high.
Fig. 6 is a schematic entity structure diagram of an electronic device according to an embodiment of the present invention, and as shown in fig. 6, the electronic device may include: a processor (processor)601, a communication Interface (Communications Interface)602, a memory (memory)603 and a communication bus 604, wherein the processor 601, the communication Interface 602 and the memory 603 complete communication with each other through the communication bus 604. The processor 601 may call a computer program stored on the memory 603 and executable on the processor 601 to perform the methods provided by the above embodiments, including for example: sending an RRC reconfiguration message and multi-subband starting DCI to a mobile terminal, wherein the RRC reconfiguration message carries a DCI interval, so that the mobile terminal determines a plurality of first resource positions for DCI blind detection according to the DCI interval and the multi-subband starting DCI; and sending a downlink radio frame to the mobile terminal, wherein the downlink radio frame carries a plurality of scheduling DCIs, so that the mobile terminal performs DCI blind detection on the downlink radio frame at the plurality of first resource positions to obtain a second resource position indicated by each scheduling DCI in the plurality of scheduling DCIs, and performs data transmission at the plurality of second resource positions. Or comprises the following steps: receiving an RRC reconfiguration message and multi-subband starting DCI (downlink control information), which are sent by network side equipment, wherein the RRC reconfiguration message carries a DCI interval, and determining a plurality of first resource positions for DCI blind detection according to the DCI interval and the multi-subband starting DCI; and receiving a downlink radio frame sent by the network side equipment, wherein the downlink radio frame carries a plurality of scheduling DCIs, performing DCI blind detection on the downlink radio frame at the plurality of first resource positions to obtain a second resource position indicated by each scheduling DCI in the plurality of scheduling DCIs, and performing data transmission at the plurality of second resource positions.
In addition, the logic instructions in the memory 603 may be implemented in the form of software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products. Based on such understanding, the technical solutions of the embodiments of the present invention may be essentially implemented or make a contribution to the prior art, or may be implemented in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
Embodiments of the present invention further provide a non-transitory computer-readable storage medium, on which a computer program is stored, where the computer program is implemented to perform the transmission method provided in the foregoing embodiments when executed by a processor, and the method includes: sending an RRC reconfiguration message and multi-subband starting DCI to a mobile terminal, wherein the RRC reconfiguration message carries a DCI interval, so that the mobile terminal determines a plurality of first resource positions for DCI blind detection according to the DCI interval and the multi-subband starting DCI; and sending a downlink radio frame to the mobile terminal, wherein the downlink radio frame carries a plurality of scheduling DCIs, so that the mobile terminal performs DCI blind detection on the downlink radio frame at the plurality of first resource positions to obtain a second resource position indicated by each scheduling DCI in the plurality of scheduling DCIs, and performs data transmission at the plurality of second resource positions. Or comprises the following steps: receiving an RRC reconfiguration message and multi-subband starting DCI (downlink control information), which are sent by network side equipment, wherein the RRC reconfiguration message carries a DCI interval, and determining a plurality of first resource positions for DCI blind detection according to the DCI interval and the multi-subband starting DCI; and receiving a downlink radio frame sent by the network side equipment, wherein the downlink radio frame carries a plurality of scheduling DCIs, performing DCI blind detection on the downlink radio frame at the plurality of first resource positions to obtain a second resource position indicated by each scheduling DCI in the plurality of scheduling DCIs, and performing data transmission at the plurality of second resource positions. The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A method of data transmission, comprising:
sending an RRC reconfiguration message and multi-subband starting DCI to a mobile terminal, wherein the RRC reconfiguration message carries a DCI interval, so that the mobile terminal determines a plurality of first resource positions for DCI blind detection according to the DCI interval and the multi-subband starting DCI;
and sending a downlink radio frame to the mobile terminal, wherein the downlink radio frame carries a plurality of scheduling DCIs, so that the mobile terminal performs DCI blind detection on the downlink radio frame at the plurality of first resource positions to obtain a second resource position indicated by each scheduling DCI in the plurality of scheduling DCIs, and performs data transmission at the plurality of second resource positions.
2. The data transmission method according to claim 1, wherein if all the plurality of scheduling DCIs are downlink scheduling DCIs, the downlink radio frame further carries a plurality of downlink data corresponding to the plurality of scheduling DCIs one to one, and the plurality of downlink data are the same.
3. A method of data transmission, comprising:
receiving an RRC reconfiguration message and multi-subband starting DCI (downlink control information), which are sent by network side equipment, wherein the RRC reconfiguration message carries a DCI interval, and determining a plurality of first resource positions for DCI blind detection according to the DCI interval and the multi-subband starting DCI;
and receiving a downlink radio frame sent by the network side equipment, wherein the downlink radio frame carries a plurality of scheduling DCIs, performing DCI blind detection on the downlink radio frame at the plurality of first resource positions to obtain a second resource position indicated by each scheduling DCI in the plurality of scheduling DCIs, and performing data transmission at the plurality of second resource positions.
4. The data transmission method according to claim 3, wherein the first starting subband and the DCI maximum occupied subband number are carried in the multi-subband starting DCI.
5. The method of claim 4, wherein determining the first resource locations for DCI blind detection according to the DCI interval and the multi-subband starting DCI comprises:
and determining a second starting sub-band according to the DCI interval and a first starting sub-band carried in the multi-sub-band starting DCI, and taking the first starting sub-band and the second starting sub-band as the plurality of first resource positions.
6. The data transmission method according to claim 3, wherein if all the plurality of scheduling DCIs are downlink scheduling DCIs, the downlink radio frame further carries a plurality of downlink data corresponding to the plurality of scheduling DCIs one to one, and the plurality of downlink data are the same.
7. A network-side device, comprising:
a first sending module, configured to send an RRC reconfiguration message and multi-subband starting DCI to a mobile terminal, where the RRC reconfiguration message carries a DCI interval, so that the mobile terminal determines, according to the DCI interval and the multi-subband starting DCI, a plurality of first resource locations for DCI blind detection;
a second sending module, configured to send a downlink radio frame to the mobile terminal, where the downlink radio frame carries multiple scheduling DCIs, so that the mobile terminal performs DCI blind detection on the downlink radio frame at the multiple first resource locations to obtain a second resource location indicated by each scheduling DCI in the multiple scheduling DCIs, and performs data transmission at the multiple second resource locations.
8. A mobile terminal, comprising:
the first receiving module is used for receiving an RRC reconfiguration message and multi-subband starting DCI (downlink control information) sent by network side equipment, wherein the RRC reconfiguration message carries a DCI interval, and a plurality of first resource positions for DCI blind detection are determined according to the DCI interval and the multi-subband starting DCI;
a second receiving module, configured to receive a downlink radio frame sent by the network side device, where the downlink radio frame carries multiple scheduling DCIs, perform DCI blind detection on the downlink radio frame at multiple first resource locations to obtain a second resource location indicated by each scheduling DCI in the multiple scheduling DCIs, and perform data transmission at multiple second resource locations.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the steps of the data transmission method according to any of claims 1 to 6 are implemented when the processor executes the program.
10. A non-transitory computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the data transmission method according to any one of claims 1 to 6.
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