CN109547169B

CN109547169B - Data retransmission request method, request device, site equipment and access point equipment

Info

Publication number: CN109547169B
Application number: CN201710864068.8A
Authority: CN
Inventors: 赵思聪
Original assignee: Meizu Technology Co Ltd
Current assignee: Meizu Technology Co Ltd
Priority date: 2017-09-22
Filing date: 2017-09-22
Publication date: 2021-12-21
Anticipated expiration: 2037-09-22
Also published as: CN109547169A

Abstract

The invention provides a data retransmission request method, a request device, site equipment and access point equipment, wherein the data retransmission request method comprises the following steps: receiving and demodulating a signaling which is sent by access point equipment and used for bearing occupation indication information to acquire the occupation indication information; acquiring the position information of URLLC data in a code block carrying an eMBB data packet according to the occupation indication information; according to the position information of URLLC data, carrying out set division on code blocks carrying eMBB data; and performing demodulation operation on the divided set code blocks to generate retransmission judgment information corresponding to the code block set, and feeding back the retransmission judgment information to the access point equipment. By the technical scheme of the invention, time-frequency resources for new data transmission can be increased, and the data transmission rate is improved.

Description

Data retransmission request method, request device, site equipment and access point equipment

Technical Field

The present invention relates to the field of communications network technologies, and in particular, to a data retransmission request method, a data retransmission request apparatus, a station device, and an access point device.

Background

According to future application requirements, the 5G system needs to support a variety of service scenarios, wherein Ultra-reliable and Low Latency Communications (URLLC) scenarios such as unmanned driving, industrial automation, and the like are receiving wide attention. Generally, URLLC data has very high burstiness and high requirement on delay, so that this type of data has very high resource scheduling priority. The solution proposed at present for the transmission of URLLC data is: when the URLLC data arrives, the 5G base station (gNB) immediately schedules the URLLC data, that is, performs puncturing transmission in an enhanced Mobile Broadband (eMBB) data block in which resource allocation has been completed, so as to realize the fastest data transfer, and further meet the requirement of the URLLC data on time delay.

In the related art, the punctured URLLC data may seriously affect the correct demodulation of the eMBB data at a User Equipment (UE) in some cases, and in order to improve this problem, members of the 3GPP section propose that relevant information of the URLLC data in the received data, such as data amount and data position, can be provided to the eMBB UE by setting a Preemption Indication (PI). The eMBB UE removes the URLLC part in the received data according to the information provided by the PI, so that the demodulation success rate of the data is improved. If the data still cannot be demodulated or recovered correctly at this time, the eMBB UE will feed back a Negative Acknowledgement (NACK) to the gNB, i.e., request the gNB to retransmit the data packet.

In the current communication system, a hybrid Automatic Repeat reQuest mechanism (Hybird Automatic Repeat reQuest, a technology formed by combining forward error correction coding (FEC) and Automatic Repeat reQuest (ARQ)) is adopted in a retransmission scheme of a first data packet, when error data is found in a received signal, the mechanism firstly corrects an error part by using a forward error correction code, judges an error data packet which cannot be corrected through error detection, and then requests a transmitting end to retransmit all PDSCH data in a demodulated error subframe, which has the following defects:

unnecessary waste of resources occurs when only a small amount of data needs to be retransmitted.

The retransmission scheme of the second data packet retransmits in units of Code Blocks (CBs), that is, performs separate feedback according to the demodulation condition of each CB, and retransmits only the interfered CB, which also has the following defects:

the number of CBs in the transport block may be uncertain, which requires that the number of bits used for retransmission feedback is dynamically matched with the number of CBs, and when the number of CBs is large, more feedback bits are also required, which increases the complexity and overhead of uplink feedback.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art or the related art.

To this end, an object of the present invention is to provide a data retransmission request method.

Another object of the present invention is to provide a data retransmission request apparatus.

It is a further object of the present invention to provide a station apparatus.

It is still another object of the present invention to provide an access point device.

In order to achieve the above object, a technical solution of a first aspect of the present invention provides a data retransmission request method, including: receiving and demodulating a signaling which is sent by access point equipment and used for bearing occupation indication information to acquire the occupation indication information; acquiring the position information of URLLC data in a code block carrying an eMBB data packet according to the occupation indication information; according to the position information of URLLC data, carrying out set division on code blocks carrying eMBB data; and performing demodulation operation on the divided set code blocks to generate retransmission judgment information corresponding to the code block set, and feeding the retransmission judgment information back to the access point equipment.

In the technical scheme, after receiving a signaling transmitted by a PDCCH (physical downlink control channel), a UE (user equipment) performs an analysis operation on the signaling to determine whether the signaling has a PI (logical link control) according to an analysis result, when the signaling has the PI, the PI indicates that URLLC (universal resource control) data exists in a corresponding received eMB data packet, namely, the eMB data packet is subjected to punching transmission, code block set division is performed on the eMB data packet by determining position information of the URLLC data, so that the divided code block sets are respectively subjected to demodulation operation, corresponding retransmission decision information is generated according to a demodulation operation result, and after the retransmission decision information is fed back to the access point equipment, the access point equipment can determine whether to perform retransmission operation according to the retransmission decision information.

Compared with the scheme of singly adopting the HARQ mechanism to retransmit data in the prior art, the method does not need to retransmit and demodulate all PDSCH data in an error frame, reduces the retransmission amount of the data on the basis of controlling uplink overhead, thereby increasing time-frequency resources for new data transmission and improving the data transmission rate.

Specifically, in a 5G communication system, data transmission is performed with a code block group as a basic unit, because in a scenario of multiplexing URLLC data and eMBB data, data of different services are completely independent, an execution mode of an existing HARQ mechanism in a scenario of multiplexing multiple data is improved and optimized, eMBB determines a position of URLLC data in received data by reading PI, and then obtains code block information affected by URLLC data by comparing time-frequency positions of code blocks, then divides code blocks in an eMBB data packet according to whether affected by URLLC data, performs error detection on the divided code block sets respectively, generates at least one retransmission decision information, and a base station schedules data to be retransmitted according to the retransmission decision information.

In addition, when it is determined that the PI does not exist, the HARQ process in the related art is performed.

In the foregoing technical solution, preferably, the set division of the code blocks of the eMBB data according to the location information of the URLLC data specifically includes: according to the position information, the code blocks are divided into a first code block set which is punctured by the URLLC data and a second code block set which is not punctured by the URLLC data, wherein the first code block set comprises at least one first code block subset, and the second code block set comprises at least one second code block subset.

In the technical scheme, an interference code block set (a first code block set) interfered by URLLC data and a non-interference code block set (a second code block set) not interfered by the URLLC data are respectively determined according to time-frequency position information of the URLLC data, wherein the interference code block set refers to a code block set punched by the URLLC data, the non-interference set refers to a code block set not punched by the URLLC data, the first code block set also comprises at least one first code block subset, the second code block set also comprises at least one second code block subset, the two code block sets are divided according to the time-frequency position information of the URLLC data, the division mode is simple, error detection can be further carried out on the two code block sets respectively to correspondingly obtain retransmission judgment information of the two code block sets, and a more effective data retransmission combination mode is selected by a terminal according to the two retransmission judgment information, thereby reducing the waste of transmission resources.

The first code block set comprises at least one first code block subset, the second code block set comprises at least one second code block subset, the first code block subset is an interference code block subset, and the second code block subset is a non-interference code block subset.

In any one of the above technical solutions, preferably, the demodulating operation is performed on the set code blocks after the division is completed to generate retransmission decision information corresponding to the code block set, and the feeding back the retransmission decision information to the access point device includes: performing a demodulation operation on the at least one first subset of code blocks and the at least one second subset of code blocks, respectively; generating a first decision information set according to the demodulation result of at least one first code block subset, and generating a second decision information set according to the demodulation result of at least one second code block subset; and sending the first decision information set and the second decision information set to the access point equipment, so that the access point equipment determines whether to retransmit data corresponding to the code block subset according to the first decision information set and the second decision information set respectively.

In the technical scheme, when the first code block set and the second code block set are both non-empty sets, the first code block subset and the second code block subset are respectively demodulated to generate a first decision information set according to a demodulation result of the first code block subset, and a second decision information set according to a demodulation result of the second code block subset, wherein the first decision information set and the second decision information set can be respectively 1-bit decision information.

In any of the foregoing technical solutions, preferably, when a code block carrying an eMBB packet is completely punctured by URLLC data, the first decision information set includes demodulation decision information of all code blocks in the eMBB packet, the second decision information set is an empty set, and the first decision information set is sent to the access point device, so that the access point device determines whether to retransmit data corresponding to a code block subset according to the first decision information set.

In the technical scheme, when the eMB UE finds that all data in the eMB data packet are interfered by URLLC data through reading PI, at the moment, the non-interference set is an empty set (namely, the second code block set is an empty set), the feedback result of the first code block set is the demodulation feedback result of all code blocks of the eMB data, only the feedback result of the first code block set is fed back to the access point equipment, and only 1-bit interference set judgment information needs to be fed back at least.

In any one of the above technical solutions, preferably, the method further includes: when the first decision information set comprises NACK, discarding a code block subset corresponding to the NACK in the first decision information set so as to receive a code block subset corresponding to the NACK in the first decision information set retransmitted by the access point equipment; and/or when the second decision information set comprises NACK, reserving a code block subset corresponding to the NACK in the second decision information set, and receiving the code block subset corresponding to the NACK in the second decision information set retransmitted by the access point equipment according to the HARQ soft combining mode.

In the technical scheme, when the first decision information set includes NACK, it indicates that data in the first code block subset is erroneous, and at this time, the corresponding code block subset is discarded to re-receive the retransmitted code block subset, and when the second decision information set includes NACK, it indicates that data in the second code block subset is erroneous, and at this time, the corresponding code block subset is retained while the retransmitted code block subset is also re-received, so that on one hand, unnecessary data retransmission can be reduced, thereby increasing time-frequency resources for transmitting new data, and increasing the data rate of the system, and on the other hand, data retransmission is performed by adopting a soft combining (CC) manner, so that the retained erroneous data packet can be stored in a memory and combined with the retransmitted data packet for decoding, thereby improving transmission efficiency.

When the eMBB data packet reaches the UE end, the eMBB data packet is detected by an error, if the eMBB data packet is received correctly, an Acknowledgement (ACK) signal is returned, and if the eMBB data packet is received incorrectly, a non-acknowledgement (NACK) signal is returned.

Specifically, when the first decision information set and the second decision information set are respectively 1-bit decision information, the method includes: when the first decision information is NACK and the second decision information is ACK, discarding the first part of eMBB data carried by the first code block set to receive the first part of eMBB data retransmitted by the access point equipment; receiving an eMBB data packet retransmitted by the access point equipment when the first judgment information is NACK and the second judgment information is NACK; and when the first decision information is ACK and the second decision information is NACK, reserving a second part of eMBB data carried by the second code block set, and receiving the second part of eMBB data retransmitted by the access point equipment according to the HARQ soft combining mode.

Namely, three feedback results can be classified, including: (1) when determining that no PI exists, performing HARQ feedback in the prior art (namely, correcting all correctable parts in errors by using an FEC technology at a receiving end, judging data packets which cannot correct the errors through error detection, discarding the data packets which cannot correct the errors, and requesting a transmitting end to resend the same data packets); (2) performing HARQ feedback of at least 2 bits when the PI is determined to exist; (3) when the PI is determined to exist and the non-interference set is the empty set, HARQ feedback with at least 1 bit is executed, and the three feedback results can utilize different uplink Format indications.

In the technical solution of the second aspect of the present invention, a data retransmission request method is further provided, including: after sending a signaling for bearing occupation indication information and an eMB data packet to site equipment, receiving a decision information set fed back by the site equipment according to the occupation indication information and the eMB data packet; respectively analyzing a first decision information set and a second decision information set in the decision information sets to determine whether to retransmit data according to the first decision information set and the second decision information set respectively, wherein the first decision information set is generated according to a data demodulation result of a code block set punched by URLLC data, the second decision information set is generated according to a data demodulation result of a code block set not punched by URLLC data, and when only the first decision information set is contained in the decision information, determining whether to retransmit data according to the first decision information set.

In the technical scheme, after a decision information set fed back by site equipment is received, a first decision information set and a second decision information set are respectively determined, so as to determine whether to perform data retransmission of a first code block set comprising a first code block subset according to the first decision information set and determine whether to perform data retransmission of a second code block set comprising a second code block subset according to the second decision information set.

In the foregoing technical solution, preferably, when determining to perform data retransmission, the method further includes: when the first decision information comprises NACK, retransmitting a code block subset corresponding to the NACK in the first decision information set to the site equipment; and retransmitting the code block subset corresponding to the NACK in the second decision information set to the site equipment when the second decision information comprises the NACK.

In the technical scheme, when the first decision information set comprises the NACK, the data in the first code block subset is indicated to be in error, at the moment, the retransmitted code block subset is received again, and when the second decision information set comprises the NACK, the data in the second code block subset is indicated to be in error, at the moment, the retransmitted code block subset is also received again, so that unnecessary data retransmission can be reduced, time-frequency resources for transmitting new data are increased, and the data rate of the system is improved.

In the technical solution of the third aspect of the present invention, a data retransmission request apparatus is further provided, including: a receiving unit, configured to receive and demodulate a signaling sent by an access point device and used for carrying occupation indication information to obtain the occupation indication information; the acquiring unit is used for acquiring the position information of URLLC data in a code block carrying an eMBB data packet according to the occupation indication information; the dividing unit is used for performing set division on code blocks carrying eMMC data according to the position information of the URLLC data; and the demodulation unit is used for executing demodulation operation on the divided aggregated code blocks to generate retransmission judgment information corresponding to the code block aggregation and feeding the retransmission judgment information back to the access point.

In any one of the above technical solutions, preferably, the dividing unit is further configured to: according to the position information, the code blocks are divided into a first code block set which is punctured by the URLLC data and a second code block set which is not punctured by the URLLC data, wherein the first code block set comprises at least one first code block subset, and the second code block set comprises at least one second code block subset.

In any one of the above technical solutions, preferably, the demodulation unit is further configured to: performing a demodulation operation on the at least one first subset of code blocks and the at least one second subset of code blocks, respectively; the data retransmission request apparatus further includes: a generating unit, configured to generate a first decision information set according to a demodulation result for at least one first code block subset, and generate a second decision information set according to a demodulation result for at least one second code block subset; and a sending unit, configured to send the first decision information set and the second decision information set to an access point device, so that the access point device determines whether to retransmit data corresponding to the code block subset according to the first decision information set and the second decision information set, respectively.

In any one of the above technical solutions, preferably, the sending unit is further configured to: when the code blocks carrying the eMB data packet are all punched by URLLC data, the first judgment information set comprises demodulation judgment information of all the code blocks in the eMB data packet, the second judgment information set is an empty set, and the first judgment information set is sent to the access point equipment, so that the access point equipment determines whether to retransmit data corresponding to the code block subset according to the first judgment information set.

In any one of the above technical solutions, preferably, the receiving unit is further configured to: when the first decision information set comprises NACK, discarding a code block subset corresponding to the NACK in the first decision information set so as to receive a code block subset corresponding to the NACK in the first decision information set retransmitted by the access point equipment; the receiving unit is further configured to: and when the second decision information set comprises NACK, reserving a code block subset corresponding to the NACK in the second decision information set, and receiving the code block subset corresponding to the NACK in the second decision information set retransmitted by the access point equipment in a mode of HARQ soft combining.

In a technical solution of the fourth aspect of the present invention, a data retransmission request apparatus is further provided, including: a receiving unit, configured to receive, after sending a signaling for carrying occupation indication information and an eMBB data packet to a site device, a decision information set fed back by the site device according to the occupation indication information and the eMBB data packet; and the analysis unit is used for respectively analyzing a first judgment information set and a second judgment information set in the judgment information sets to determine whether to retransmit the data according to the first judgment information set and the second judgment information set, wherein the first judgment information set is generated according to the data demodulation result of the code block set punched by the URLLC data, the second judgment information set is generated according to the data demodulation result of the code block set not punched by the URLLC data, and when the judgment information only contains the first judgment information set, the data retransmission is determined according to the first judgment information set.

In the above technical solution, preferably, the method further includes: a retransmission unit, configured to retransmit, to the site device, a code block subset sum corresponding to NACK in the first decision information set when the first decision information includes NACK; the retransmission unit is further configured to: and retransmitting the code block subset corresponding to the NACK in the second decision information set to the site equipment when the NACK is included in the second decision information.

In a technical solution of the fifth aspect of the present invention, a station device is further provided, including: the data retransmission request apparatus according to any one of the aspects of the third aspect of the present invention.

In this technical solution, the station device includes the data retransmission request apparatus according to any one of the technical solutions of the third aspect of the present invention, so that the station device has all the beneficial effects of the data retransmission request apparatus according to any one of the technical solutions described above, and details are not described here again.

In a technical solution of the sixth aspect of the present invention, an access point device is further provided, including: the data retransmission request apparatus according to any one of the aspects of the fourth aspect of the present invention.

In this technical solution, the access point device includes the data retransmission request apparatus according to any one of the technical solutions of the fourth aspect of the present invention, and therefore, the access point device has all the beneficial effects of the data retransmission request apparatus according to any one of the technical solutions described above, and details are not described here again.

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

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 shows a schematic flow diagram of a data retransmission request method according to an embodiment of the present invention;

FIG. 2 shows a schematic flow diagram of a data retransmission request method according to another embodiment of the present invention;

FIG. 3 shows a schematic flow chart diagram of a data retransmission request method according to yet another embodiment of the present invention;

fig. 4 shows a schematic block diagram of a data retransmission request apparatus according to an embodiment of the present invention;

fig. 5 shows a schematic block diagram of a data retransmission request apparatus according to another embodiment of the present invention;

FIG. 6 shows a schematic block diagram of a station apparatus according to one embodiment of the present invention;

fig. 7 shows a schematic block diagram of an access point device according to an embodiment of the invention;

fig. 8 shows a schematic diagram of eMBB code block set partitioning according to one embodiment of the present invention;

fig. 9 shows a schematic diagram of eMBB code block set partitioning according to another embodiment of the present invention.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to 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.

As shown in fig. 1, a data retransmission request method according to an embodiment of the present invention is applicable to a station device, and includes: 102, receiving and demodulating a signaling which is sent by access point equipment and used for bearing occupation indication information to acquire the occupation indication information; step 104, obtaining the position information of URLLC data in a code block carrying an eMBB data packet according to the occupation indication information; 106, performing set division on code blocks carrying eMBB data according to the position information of URLLC data; and 108, performing demodulation operation on the divided aggregated code blocks to generate retransmission decision information corresponding to the code block aggregation, and feeding the retransmission decision information back to the access point equipment.

In this embodiment, after receiving a signaling transmitted by a PDCCH (physical downlink control channel), a UE performs an analysis operation on the signaling to determine whether the signaling has a PI according to an analysis result, and when the signaling has the PI, it indicates that there is URLLC data in a corresponding received eMMB packet, that is, performs a puncturing transmission on the eMMB packet, and performs division of a code block set on the eMMB packet by determining location information of the URLLC data to perform demodulation operations on the divided code block sets, respectively, and generates corresponding retransmission decision information according to a result of the demodulation operation, and after feeding back the retransmission decision information to an access point device, the access point device can determine whether to perform a retransmission operation according to the retransmission decision information.

In the foregoing embodiment, preferably, the set division of the code blocks of the eMBB data according to the location information of the URLLC data specifically includes: according to the position information, the code blocks are divided into a first code block set which is punctured by the URLLC data and a second code block set which is not punctured by the URLLC data, wherein the first code block set comprises at least one first code block subset, and the second code block set comprises at least one second code block subset.

In the embodiment, according to the time-frequency position information of the URLLC data, an interference code block set (first code block set) interfered by the URLLC data and a non-interference code block set (second code block set) not interfered by the URLLC data are respectively determined, wherein the interference code block set refers to a code block set punctured by URLLC data, the non-interference set refers to a code block set not punctured by URLLC data, the first code block set comprises at least one first code block subset, the second code block set comprises at least one second code block subset, by dividing the time-frequency position information of URLLC data into at least two code block sets, the dividing mode is simple, and then error detection can be respectively carried out on the two code block sets so as to correspondingly obtain retransmission judgment information of the two code block sets, and the terminal selects a more effective data retransmission combination mode according to the two retransmission judgment information, thereby reducing the waste of transmission resources.

In any of the foregoing embodiments, preferably, the demodulating operation is performed on the set code blocks after being divided, so as to generate retransmission decision information corresponding to the code block set, and the feeding back the retransmission decision information to the access point device includes: performing a demodulation operation on the at least one first subset of code blocks and the at least one second subset of code blocks, respectively; generating a first decision information set according to the demodulation result of at least one first code block subset, and generating a second decision information set according to the demodulation result of at least one second code block subset; and sending the first decision information set and the second decision information set to the access point equipment, so that the access point equipment determines whether to retransmit data corresponding to the code block subset according to the first decision information set and the second decision information set respectively.

In this embodiment, when the first code block set and the second code block set are both non-empty sets, the first code block subset and the second code block subset are demodulated respectively to generate a first decision information set according to a demodulation result of the first code block subset, and a second decision information set according to a demodulation result of the second code block subset, where the first decision information set and the second decision information set may be respectively 1-bit decision information, and compared with a mode of performing data retransmission by using a code block as a unit in the prior art, when the number of code blocks is large, only 2-bit decision information may still be fed back, thereby reducing a complexity of uplink feedback, and reducing feedback overhead.

In any of the foregoing embodiments, preferably, when a code block carrying an eMBB packet is completely punctured by URLLC data, the first decision information set includes demodulation decision information of all code blocks in the eMBB packet, and the second decision information set is an empty set, and the first decision information set is sent to the access point device, so that the access point device determines whether to retransmit data corresponding to a code block subset according to the first decision information set.

In this embodiment, when the eMBB UE finds that all data in the eMBB data packet is interfered by the URLLC data by reading the PI, the non-interference set is an empty set (that is, the second code block set is an empty set), the feedback result of the first code block set is the demodulation feedback result of all code blocks of the eMBB data, and only the feedback result of the first code block set is fed back to the access point device, so that at least 1-bit interference set decision information needs to be fed back.

In any one of the above embodiments, preferably, the method further includes: when the first decision information set comprises NACK, discarding a code block subset corresponding to the NACK in the first decision information set so as to receive a code block subset corresponding to the NACK in the first decision information set retransmitted by the access point equipment; and/or when the second decision information set comprises NACK, reserving a code block subset corresponding to the NACK in the second decision information set, and receiving the code block subset corresponding to the NACK in the second decision information set retransmitted by the access point equipment according to the HARQ soft combining mode.

In this embodiment, when the first decision information set includes NACK, it indicates that data in the first code block subset is erroneous, and at this time, the corresponding code block subset is discarded, and the retransmitted code block subset is received again, and when the second decision information set includes NACK, it indicates that data in the second code block subset is erroneous, and at this time, the corresponding code block subset is retained and the retransmitted code block subset is also received again, so that on one hand, unnecessary data retransmission can be reduced, thereby increasing time-frequency resources for transmitting new data, and increasing the data rate of the system, and on the other hand, by performing data retransmission in a soft combining (CC) manner, the retained erroneous data packet can be stored in a memory, and combined with the retransmitted data packet for decoding, thereby improving transmission efficiency.

As shown in fig. 2, a data retransmission request method according to another embodiment of the present invention is applicable to a station device, and includes: step 202, when receiving a control signaling through a physical downlink control channel, detecting whether the control signaling has a PI, when the detection result is yes, entering step 206, and when the detection result is no, entering step 204; step 204, performing data retransmission operation according to the HARQ; step 206, detecting whether all the eMBB data packets are punched by URLLC data according to PI, entering step 212 when the detection result is 'yes', and entering step 208 when the detection result is 'no'; step 208, the first code block set is a code block set punctured by the URLLC data, and the second code block set is a code block set not punctured by the URLLC data; step 210, performing demodulation operations on the first code block set and the second code block set respectively to generate 1-bit interference set decision information and 1-bit non-interference set decision information; step 212, the first code block set is a code block set punctured by URLLC data, and the second code block set is a null set; step 214, generating 1-bit interference set decision information according to the demodulation operation on the first code block set; and step 216, feeding back the decision information to the access point device, so that the access point device determines whether to perform a data retransmission operation according to the decision information.

As shown in fig. 3, a data retransmission request method according to still another embodiment of the present invention is applicable to an access point device, and includes: step 302, after sending signaling for carrying occupation indication information and an eMBB data packet to the site equipment, receiving a decision information set fed back by the site equipment according to the occupation indication information and the eMBB data packet; step 304; respectively analyzing a first decision information set and a second decision information set in the decision information sets to determine whether to retransmit data according to the first decision information set and the second decision information set respectively, wherein the first decision information set is generated according to a data demodulation result of a code block set punched by URLLC data, the second decision information set is generated according to a data demodulation result of a code block set not punched by URLLC data, and when only the first decision information set is contained in the decision information, determining whether to retransmit data according to the first decision information set.

In this embodiment, after receiving a decision information set fed back by a station device, a first decision information set and a second decision information set are respectively determined to determine whether to perform data retransmission of a first code block set including a first code block subset according to the first decision information set, and determine whether to perform data retransmission of a second code block set including a second code block subset according to the second decision information set.

In the above embodiment, preferably, when determining to perform data retransmission, the method further includes: when the first decision information comprises NACK, retransmitting a code block subset corresponding to the NACK in the first decision information set to the site equipment; and retransmitting the code block subset corresponding to the NACK in the second decision information set to the site equipment when the second decision information comprises the NACK.

In this embodiment, when the first decision information set includes NACK, it indicates that data in the first code block subset is erroneous, and at this time, the retransmitted code block subset is received again, and when the second decision information set includes NACK, it indicates that data in the second code block subset is erroneous, and at this time, the retransmitted code block subset is also received again, so that unnecessary data retransmission can be reduced, thereby increasing time-frequency resources for transmitting new data, and increasing the data rate of the system.

As shown in fig. 4, a data retransmission request apparatus 400 according to an embodiment of the present invention includes: a receiving unit 402, configured to receive and demodulate a signaling sent by an access point device and used for carrying occupation indication information to obtain the occupation indication information; an obtaining unit 404, configured to obtain, according to the occupation indication information, location information of URLLC data in a code block carrying an eMBB packet; a dividing unit 406, configured to perform set division on code blocks carrying the eMBB data according to the location information of the URLLC data; the demodulating unit 408 is configured to perform a demodulation operation on the divided aggregated code block to generate retransmission decision information corresponding to the code block set, and feed back the retransmission decision information to the access point.

In any of the above embodiments, preferably, the dividing unit 406 is further configured to: according to the position information, the code blocks are divided into a first code block set which is punctured by the URLLC data and a second code block set which is not punctured by the URLLC data, wherein the first code block set comprises at least one first code block subset, and the second code block set comprises at least one second code block subset.

In any of the above embodiments, preferably, the demodulation unit 408 is further configured to: performing a demodulation operation on the at least one first subset of code blocks and the at least one second subset of code blocks, respectively; the data retransmission request apparatus 400 further includes: a generating unit 410, configured to generate a first decision information set according to a demodulation result for at least one first code block subset, and generate a second decision information set according to a demodulation result for at least one second code block subset; a sending unit 412, configured to send the first decision information set and the second decision information set to the access point device, so that the access point device determines whether to retransmit data corresponding to the code block subset according to the first decision information set and the second decision information set, respectively.

In any of the above embodiments, preferably, the sending unit 412 is further configured to: when code blocks carrying eMB data packets are all punched by URLLC data, the first judgment information set comprises demodulation judgment information of all code blocks in the eMB data packets, the second judgment information set is an empty set, and the first judgment information set is sent to the access point equipment, so that the access point equipment determines whether to retransmit data corresponding to a code block subset according to the first judgment information set.

In this embodiment, when the eMBB UE finds that all data in the eMBB data packet is interfered by the URLLC data by reading the PI, the non-interference set is an empty set (that is, the second code block set is an empty set), and the feedback result of the first code block set is the demodulation feedback result of all code blocks of the eMBB data, so that at least 1-bit interference set decision information needs to be fed back, which further reduces the feedback overhead compared with the scheme in the prior art that needs more feedback bits.

In any of the above embodiments, preferably, the receiving unit 402 is further configured to: when the first decision information set comprises NACK, discarding a code block subset corresponding to the NACK in the first decision information set so as to receive a code block subset corresponding to the NACK in the first decision information set retransmitted by the access point equipment; the receiving unit 402 is further configured to: and when the second decision information set comprises NACK, reserving a code block subset corresponding to the NACK in the second decision information set, and receiving the code block subset corresponding to the NACK in the second decision information set retransmitted by the access point equipment in a mode of HARQ soft combining.

As shown in fig. 5, a data retransmission request apparatus 500 according to another embodiment of the present invention includes: a receiving unit 502, configured to receive, after sending a signaling for carrying occupation indication information and an eMBB data packet to a station device, a decision information set fed back by the station device according to the occupation indication information and the eMBB data packet; an analyzing unit 504, configured to analyze a first decision information set and a second decision information set in the decision information sets, respectively, to determine whether to perform data retransmission according to the first decision information set and the second decision information set, respectively, where the first decision information set is generated according to data demodulation and demodulation of a code block set punctured by URLLC data, the second decision information set is generated according to data demodulation and demodulation of a code block set not punctured by URLLC data, and when only the first decision information set is included in the decision information, whether to perform data retransmission according to the first decision information set is determined.

In the above embodiment, preferably, the method further includes: a retransmitting unit 506, configured to retransmit, to the site device, a code block subset sum corresponding to NACK in the first decision information set when the first decision information includes NACK; the retransmission unit 506 is further configured to: and retransmitting the code block subset corresponding to the NACK in the second decision information set to the site equipment when the NACK is included in the second decision information.

As shown in fig. 6, a station apparatus 600 according to an embodiment of the present invention includes: the data retransmission request device 400 according to any of the embodiments of the third aspect of the present invention.

In this embodiment, the station apparatus 600 includes the data retransmission request device 400 according to any one of the embodiments of the third aspect of the present invention, and therefore, the station apparatus 600 has all the beneficial effects of the data retransmission request device 400 according to any one of the embodiments described above, and details are not repeated here.

As shown in fig. 7, an access point device 700 according to an embodiment of the present invention includes: the apparatus 500 for requesting retransmission of data according to any of the embodiments of the fourth aspect of the present invention.

In this embodiment, the access point device 700 includes the data retransmission request apparatus 500 according to any one of the embodiments of the fourth aspect of the present invention, and therefore, the access point device 700 has all the advantages of the data retransmission request apparatus 500 according to any one of the embodiments described above, and details are not repeated here.

A data retransmission request scheme according to an embodiment of the present invention is specifically described below with reference to fig. 8 and 9.

The first embodiment is as follows:

as shown in fig. 8, the code blocks of the eMBB data include a first code block set (interference set) and a second code block set (non-interference set), where the first code block set includes { CB3, CB4, CB5}, the second code block set includes { CB0, CB1, CB2, CB6}, and the first code block set and the second code block set are subjected to error correction and error detection, respectively, so that the first code block set generates one bit of first decision information (ACK or NACK) correspondingly, and the second code block set generates one bit of second decision information (ACK or NACK) correspondingly, and the four code block number set results requiring retransmission are obtained by matching different feedback results as shown in table 1.

TABLE 1

Example two:

as shown in fig. 9, the code blocks of the eMBB data include a first code block set (interference set) and a second code block set (non-interference set), since the code blocks of the eMBB data are interfered by the URLLC (CB6 is the lower data of the URLLC data block in time-frequency, that is, the interference set), that is, the non-interference set is a null set, and the feedback result of the non-interference set is a null set, that is, no feedback is performed, as shown in table 2, at this time, only 1 bit of interference set decision information needs to be fed back, and the code block codes that need to be retransmitted are shown in table 2.

TABLE 2

The steps in the method of the invention can be sequentially adjusted, combined and deleted according to actual needs.

The units in the device of the invention can be merged, divided and deleted according to actual needs.

It will be understood by those skilled in the art that all or part of the steps in the methods of the embodiments described above may be implemented by hardware instructions of a program, and the program may be stored in a computer-readable storage medium, where the storage medium includes Read-Only Memory (ROM), Random Access Memory (RAM), Programmable Read-Only Memory (PROM), Erasable Programmable Read-Only Memory (EPROM), One-time Programmable Read-Only Memory (OTPROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Compact Disc Read-Only Memory (CD-ROM), or other Memory, such as a magnetic disk, or a combination thereof, A tape memory, or any other medium readable by a computer that can be used to carry or store data.

The technical scheme of the invention is described in detail in the above with reference to the accompanying drawings, and the invention provides a data retransmission request method, a device, a site device and an access point device, compared with the scheme of simply adopting an HARQ mechanism to perform data retransmission in the prior art, the invention does not need to retransmit and demodulate all PDSCH data in an error frame, and reduces the retransmission amount of the data on the basis of controlling uplink overhead, thereby increasing time-frequency resources for new data transmission and improving the data transmission rate.

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

1. A data retransmission request method is applicable to station equipment, and is characterized by comprising the following steps:

receiving and demodulating a signaling which is sent by access point equipment and used for bearing occupation indication information to acquire the occupation indication information;

acquiring the position information of the ultra-high reliable ultra-low time delay communication data in a code block carrying the enhanced mobile broadband data packet according to the occupation indication information;

according to the position information of the ultra-high reliable ultra-low time delay communication data, carrying out set division on code blocks bearing the enhanced mobile broadband data packets;

performing demodulation operation on the divided set code blocks to generate retransmission judgment information corresponding to the code block set, and feeding back the retransmission judgment information to the access point equipment;

the set division of the code blocks of the enhanced mobile broadband data according to the position information of the ultra-high reliable ultra-low time delay communication data specifically comprises:

dividing the code blocks into a first code block set punctured by the ultra-high reliable ultra-low latency communication data and a second code block set not punctured by the ultra-high reliable ultra-low latency communication data according to the location information,

wherein the first code block set comprises at least one first code block subset and the second code block set comprises at least one second code block subset.

2. The method according to claim 1, wherein the performing demodulation operation on the partitioned set code blocks to generate retransmission decision information corresponding to the code block set, and feeding back the retransmission decision information to the access point device specifically includes:

performing a demodulation operation on the at least one first code block subset and the at least one second code block subset, respectively, according to a code block set partitioning result;

generating a first decision information set according to the demodulation result of the at least one first code block subset, and generating a second decision information set according to the demodulation result of the at least one second code block subset;

and sending the first decision information set and the second decision information set to the access point device, so that the access point device determines whether to retransmit data corresponding to the code block subset according to the first decision information set and the second decision information set, respectively.

3. The data retransmission request method according to claim 2, further comprising:

when the code blocks bearing the enhanced mobile broadband data packet are all punched by the ultra-high-reliability ultra-low-delay communication data, the first decision information set comprises demodulation decision information of all code blocks in the enhanced mobile broadband data packet, the second decision information set is an empty set, and the first decision information set is sent to the access point equipment, so that the access point equipment determines whether to retransmit data corresponding to the code block subset according to the first decision information set.

4. The data retransmission request method according to claim 2 or 3, further comprising

When the negative acknowledgement is included in the first decision information set, discarding a subset of code blocks corresponding to the negative acknowledgement in the first decision information set to receive a subset of code blocks corresponding to the negative acknowledgement in the first decision information set retransmitted by the access point device;

and when the second decision information set comprises negative acknowledgements, reserving a code block subset corresponding to the negative acknowledgements in the second decision information set, and receiving the code block subset corresponding to the negative acknowledgements in the second decision information set retransmitted by the access point equipment in a mode of soft combining according to a hybrid automatic repeat request.

5. A data retransmission request method is applicable to access point equipment, and is characterized by comprising the following steps:

after sending a signaling for bearing occupation indication information and an enhanced mobile broadband data packet to site equipment, receiving a decision information set fed back by the site equipment according to the occupation indication information and the enhanced mobile broadband data packet;

respectively analyzing a first decision information set and a second decision information set in the decision information sets to determine whether to retransmit data according to the first decision information set and the second decision information set;

the first decision information set is generated according to the data demodulation result of the code block set punctured by the ultra-high reliability ultra-low time delay communication data, the second decision information set is generated according to the data demodulation result of the code block set not punctured by the ultra-high reliability ultra-low time delay communication data, and when the decision information only contains the first decision information set, whether data retransmission is carried out or not is determined according to the first decision information set.

6. The data retransmission request method according to claim 5,

retransmitting a code block subset corresponding to a negative acknowledgement in the first decision information set to the station device when the negative acknowledgement is included in the first decision information set;

and when the second decision information set comprises a negative acknowledgement, retransmitting a code block subset corresponding to the negative acknowledgement in the second decision information set to the station equipment.

7. A data retransmission request apparatus, adapted to a station device, comprising:

a receiving unit, configured to receive and demodulate a signaling sent by an access point device and used for carrying occupation indication information to obtain the occupation indication information;

the acquisition unit is used for acquiring the position information of the ultra-high reliable ultra-low time delay communication data in the code block bearing the enhanced mobile broadband data packet according to the occupation indication information;

the dividing unit is used for carrying out set division on code blocks bearing the enhanced mobile broadband data according to the position information of the ultra-high-reliability ultra-low time delay communication data;

a demodulation unit, configured to perform demodulation operation on the divided aggregated code block to generate retransmission decision information corresponding to the code block set, and feed back the retransmission decision information to the access point device;

the dividing unit is further configured to: dividing the code blocks into a first code block set punctured by the ultra-high reliable ultra-low latency communication data and a second code block set not punctured by the ultra-high reliable ultra-low latency communication data according to the location information,

wherein the first code block set comprises at least one first code block subset, and the second code block set comprises at least one second code block subset.

8. The data retransmission request device according to claim 7,

the demodulation unit is further configured to: performing a demodulation operation on the at least one first subset of code blocks and the at least one second subset of code blocks, respectively;

the data retransmission request apparatus further includes:

a generating unit, configured to generate a first decision information set according to a demodulation result for the at least one first code block subset, and generate a second decision information set according to a demodulation result for the at least one second code block subset;

a sending unit, configured to send the first decision information set and the second decision information set to the access point device, so that the access point device determines whether to retransmit data corresponding to the code block subset according to the first decision information set and the second decision information set, respectively.

9. The data retransmission request device according to claim 8,

the sending unit is further configured to: when the code blocks bearing the enhanced mobile broadband data packet are all punched by the ultra-high-reliability ultra-low-delay communication data, the first decision information set comprises demodulation decision information of all code blocks in the enhanced mobile broadband data packet, the second decision information set is an empty set, and the first decision information set is sent to the access point equipment, so that the access point equipment determines whether to retransmit data corresponding to the code block subset according to the first decision information set.

10. The data retransmission request device according to claim 8 or 9,

the receiving unit is further configured to: when the negative acknowledgement is included in the first decision information set, discarding a subset of code blocks corresponding to the negative acknowledgement in the first decision information set to receive a subset of code blocks corresponding to the negative acknowledgement in the first decision information set retransmitted by the access point device;

the receiving unit is further configured to: and when the second decision information comprises negative acknowledgement, reserving a code block subset corresponding to the negative acknowledgement in the second decision information set, and receiving the code block subset corresponding to the negative acknowledgement in the second decision information set retransmitted by the access point equipment in a hybrid automatic repeat request soft combining manner.

11. A data retransmission request apparatus, adapted to an access point device, comprising:

a receiving unit, configured to receive a decision information set fed back by a site device according to occupancy indication information and an enhanced mobile broadband data packet after sending a signaling for carrying the occupancy indication information and the enhanced mobile broadband data packet to the site device;

an analysis unit, configured to analyze a first decision information set and a second decision information set in the decision information sets respectively, to determine whether to perform data retransmission according to the first decision information set and the second decision information set respectively,

12. The apparatus for requesting data retransmission according to claim 11, further comprising:

a retransmission unit, configured to retransmit, to the station device, a code block subset corresponding to a negative acknowledgement in the first decision information set when the first decision information includes the negative acknowledgement;

the retransmission unit is further configured to: and when the second decision information comprises a negative acknowledgement, retransmitting a code block subset corresponding to the negative acknowledgement in the second decision information set to the site equipment.

13. A station apparatus, comprising:

the data retransmission request device according to any one of claims 7 to 10.

14. An access point device, comprising:

a data retransmission request device according to claim 11 or 12.