CN109673050B - Data multiplexing transmission method, network side equipment and communication system - Google Patents
Data multiplexing transmission method, network side equipment and communication system Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses a data multiplexing transmission method, network side equipment and a communication system, wherein the method comprises the following steps: sending first indication information for indicating eBB time-frequency resources occupied by URLLC service data and second indication information for indicating that the occupation of eBB time-frequency resource units occurs before or after rate matching is carried out on the eBB time-frequency resource units to UE through a control channel; and the UE demodulates the eMBB downlink data based on the first indication information and the second indication information and sends HARQ ACK or NACK information. According to the method, the network side equipment and the communication system disclosed by the invention, the control channel carries the pre-occupation indication information to indicate the pre-occupation resources and whether the pre-occupation occurs before the rate matching, so that the problem of retransmission resource waste caused by the fact that the pre-occupation occurs before the rate matching and the user still feeds back HARQ NACK can be reduced, and the utilization efficiency of the downlink resources is improved.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a data multiplexing transmission method, a network side device, and a communication system.
Background
In the 5G (fifth generation mobile communication technology) communication technology standard, three major types of application scenarios are included: enhanced Mobile Broadband (eMBB), Low-latency and high-reliability (URLLC), and Low-power and large-connectivity (mMTC) scenarios. In a low-delay and high-reliability scene, services such as Internet of vehicles, industrial control, telemedicine and the like put higher requirements on delay and reliability. 3GPP StandardThe requirement of the quasi-organization on the low-delay and high-reliability scene is that the uplink/downlink one-way user plane delay is 0.5ms, and the reliability of a data packet of 32bytes reaches 1-10 -5 The user plane one-way delay is 1ms in the case of (2). The 3GPP standard determines that the downlink of 5G NR (New Radio) supports the multiplex transmission of URLLC and eMBB, and the base station indicates the time-frequency resources occupied by the URLLC and the eMBB during the downlink multiplex to eMBB UE in a mode of sending the preemption indication. The 3GPP RAN1 specifies that NR Rel-15 release will support Code Block Group (CBG) based transmission and single bit/multi-bit HARQ-ACK feedback. The 3GPP RAN1 determines to ensure as much as possible that CBG transmission is transparent to the MAC layer.
However, CBG transparency to the MAC layer negatively affects base station side resource utilization: when the base station only needs to retransmit 1 CBG in the transport block TB, the CBG is transparent to the MAC layer, the MAC layer distributes downlink data resources for the retransmission according to the whole TB when carrying out retransmission scheduling, after the physical layer receives the retransmitted TB, the successfully received CBG is discarded according to the feedback content of the multi-bit HARQ-ACK, and the rate matching is carried out on the CBG needing to be retransmitted, so that the code rate of the retransmitted CBG is reduced, the transmission reliability is improved, and the utilization rate of the downlink resources is reduced.
BRIEF SUMMARY OF THE PRESENT DISCLOSURE
In view of the above, an object of the present invention is to provide a data multiplexing transmission method, a network side device and a communication system.
According to one aspect of the disclosure, a data multiplexing transmission method is provided, including: when enhanced mobile broadband eMMC downlink data are generated, an eMMC time-frequency resource unit occupied by low-delay high-reliability communication URLLC service data is determined, and the URLLC service data are transmitted through the occupied eMMC time-frequency resource unit; sending first indication information used for indicating eMBB time-frequency resources occupied by URLLC service data and second indication information used for indicating that the occupation of the eMBB time-frequency resource units by the URLLC service data occurs before or after rate matching is carried out on the eMBB time-frequency resource units to User Equipment (UE) through a control channel; and the UE demodulates eMBB downlink data based on the first indication information and the second indication information and sends HARQ ACK or NACK information.
Optionally, the coding rate of the occupied eMMC time-frequency resource unit is adjusted in a punching mode in a physical layer, and the data symbols of the URLLC service data are mapped to the occupied eMMC time-frequency resource unit, so that the occupied eMMC time-frequency resource unit is occupied.
Optionally, before the physical layer performs coding rate adjustment on the occupied eMBB time-frequency resource units in a puncturing manner, the method further includes: allocating eMBMS time-frequency resources for transmitting eMBMS data to the UE, and determining a time domain starting position of resource mapping; determining eMBB time-frequency resource units available for the UE according to the time domain initial position of the resource mapping; and sequentially mapping data symbols of eMBB service data to the available eMBB time-frequency resource units from the time-domain starting position of the resource mapping.
Optionally, a code block group CBG is transmitted on the occupied eMBB time-frequency resource unit, for transmitting the URLLC service data.
Optionally, the determining the eMBB time-frequency resource unit occupied by the low-latency high-reliability communication URLLC service data includes: determining one or more symbols s of the time slot t allocated to the UE as eMBB time-frequency resource units occupied by URLLC service data; wherein the first indication mark is used for indicating one or more symbols s of the time slot t.
Optionally, the demodulating, by the UE, the eMBB downlink data based on the first indication information and the second indication information, and sending an HARQ ACK or NACK message includes: and when the occupation of the URLLC service data on the time slot resources is determined to occur before the rate matching is carried out according to the second indication information, the UE carries out punching on one or more symbols s of the time slot t and acquires service data based on the first indication information, and if the demodulation of the service data is successful, an HARQ ACK message is sent.
Optionally, the demodulating, by the UE, the eMBB downlink data based on the first indication information and the second indication information, and sending the HARQ ACK or NACK message includes: and when the occupation of the URLLC service data on the eMB time-frequency resource unit is determined to occur after the rate matching according to the second indication information, the UE determines a CBG corresponding to one or more symbols s of the time slot t based on the first indication information, and feeds back HARQ NACK information for the CBG.
Optionally, the control channel includes: a physical downlink control channel PDCCH; the second indication information includes: a bit used for indicating that the occupation of the eMMC time-frequency resource unit by the URLLC service data occurs before or after the rate matching of the eMMC time-frequency resource unit.
According to another aspect of the disclosure, a network side device is provided, which includes: the data multiplexing unit is used for determining an eMMC time-frequency resource unit occupied by low-delay high-reliability communication URLLC service data when the enhanced mobile broadband eMMC downlink data is generated; a data sending unit, configured to transmit the URLLC service data through the occupied eMBB time-frequency resource unit; the system comprises an indication issuing unit and a control unit, wherein the indication issuing unit is used for issuing first indication information for indicating eBB time-frequency resources occupied by URLLC service data and second indication information for indicating that the occupation of the eBB time-frequency resource units by the URLLC service data occurs before or after rate matching is carried out on the eBB time-frequency resource units to User Equipment (UE) through a control channel; the UE demodulates eMBB downlink data based on the first indication information and the second indication information, and sends HARQ ACK or NACK information.
Optionally, the data multiplexing unit is configured to perform coding rate adjustment on the occupied eMBB time-frequency resource unit in a puncturing manner in a physical layer, and map a data symbol of the URLLC service data to the occupied eMBB time-frequency resource unit, so as to realize occupation of the eMBB time-frequency resource unit.
Optionally, the data multiplexing unit is configured to allocate, to the UE, an eMBB time-frequency resource used for transmitting eMBB service data, and determine a time-domain starting position of resource mapping; determining eMBB time-frequency resource units available for the UE according to the time domain initial position of the resource mapping; and sequentially mapping data symbols of eMBB service data to the available eMBB time-frequency resource units from the time-domain starting position of the resource mapping.
Optionally, the data sending unit is configured to transmit a code block group CBG on the occupied eMBB time-frequency resource unit, and configured to transmit the URLLC service data.
Optionally, the data multiplexing unit is configured to determine one or more symbols s of the timeslot t allocated to the UE as an eMBB time-frequency resource unit occupied by URLLC service data; wherein the first indication mark is used for indicating one or more symbols s of the time slot t.
Optionally, the method further comprises: a feedback receiving unit; and when the UE determines that the occupation of the URLLC service data on the time slot resources occurs before the rate matching is performed according to the second indication information, based on the second indication information, punching one or more symbols s of the time slot t and acquiring service data, and if the service data is successfully demodulated, sending HARQ ACK (hybrid automatic repeat request) information to the feedback receiving unit.
Optionally, when it is determined that the occupancy of the URLLC service data on the eMBB time-frequency resource unit occurs after the rate matching according to the second indication information, the UE determines, based on the first indication information, a CBG corresponding to one or more symbols s of the time slot t, and sends, to the feedback receiving unit, a HARQ NACK message for the CBG. According to another aspect of the present disclosure, there is provided a network side device, including: a memory; and a processor coupled to the memory, the processor configured to perform the data multiplexing transmission method as described above based on instructions stored in the memory.
According to still another aspect of the present disclosure, there is provided a communication system including: UE, the network side equipment.
According to still another aspect of the disclosure, a network side device is provided, which includes: a memory; and a processor coupled to the memory, the processor configured to perform the data multiplexing transmission method as described above based on instructions stored in the memory.
The invention discloses a data multiplexing transmission method, network side equipment and a communication system, which are used for determining an eMBB time-frequency resource unit occupied by URLLC service data, and sending first indication information for indicating the eMBB time-frequency resource occupied by the URLLC service data and second indication information for indicating that the occupation of the eMBB time-frequency resource unit occurs before or after rate matching is carried out on the eMBB time-frequency resource unit to User Equipment (UE) through a control channel; the control channel carries the pre-occupation indication information to indicate the pre-occupation resources and whether the pre-occupation occurs before the rate matching, so that the problem that the re-transmission resources are wasted because the pre-occupation occurs before the rate matching and the user still feeds back HARQ NACK can be solved, the utilization efficiency of the downlink resources is improved, and the blank of the specific scheme of the pre-occupation identification transmission when the CBG downlink transmission URLLC and the eMBB are multiplexed is filled.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure 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 only some embodiments of the present disclosure, and for those skilled in the art, other drawings can be obtained according to these drawings without any creative effort.
Fig. 1 is a schematic diagram illustrating a flow of data issuing by a network device in an embodiment of a data multiplexing transmission method according to the present disclosure;
fig. 2 is a schematic flowchart illustrating a UE receiving data according to an embodiment of the data multiplexing transmission method disclosed in the present invention;
FIG. 3 is a block diagram illustrating an embodiment of a network side device according to the present disclosure;
fig. 4 is a block diagram of another embodiment of a network-side device according to the present disclosure;
fig. 5 is a block diagram of one embodiment of a communication network according to the present disclosure.
Detailed Description
The present disclosure now will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the disclosure are shown. The technical solutions in the embodiments of the present disclosure will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the scope of the present disclosure.
The terms "first", "second", and the like are used hereinafter only for descriptive distinction and not for other specific meanings.
Fig. 1 is a schematic flow chart of data issuing by a network side device in an embodiment of a data multiplexing transmission method disclosed in the present invention, as shown in fig. 1:
The eMB downlink data refers to eMB service data sent by a network side device to a User Equipment (UE), and the UE supports data receiving and sending in eMB and URLLC modes. URLLC services include services such as automatic driving. The eMBB time-frequency resource refers to a time-frequency resource allocated to the UE for transmitting eMBB type service data, and the eMBB time-frequency resource unit refers to an eMBB time-frequency resource unit. The network side device may be a base station or the like.
And 102, sending first indication information for indicating eMBB time-frequency resources occupied by URLLC service data and second indication information for indicating that the occupation of the eMBB time-frequency resource units by the URLLC service data occurs before or after rate matching is carried out on the eMBB time-frequency resource units to User Equipment (UE) through a control channel.
The control channel for issuing the first indication information and the second indication information comprises: a physical downlink control channel PDCCH and the like. The control channel may be a PDCCH of the legacy UE or a new PDCCH based on a new rule. The first indication information and the second indication information may be 1 or more bits. For example, the second indication information may be one bit for indicating that occupation of the emblc traffic data by the eMBB time-frequency resource unit occurs before or after rate matching of the eMBB time-frequency resource unit.
And 103, the UE demodulates eMBB downlink data based on the first indication information and the second indication information and sends HARQ ACK or NACK information.
In one embodiment, there may be multiple methods for transmitting URLLC service data through occupied eMBB time-frequency resource units. And the coding rate of the occupied eMMC time-frequency resource units is adjusted by adopting a punching mode in the physical layer, and the data symbols of the URLLC service data are mapped to the occupied eMMC time-frequency resource units, so that the eMMC time-frequency resource units are occupied.
Before or after the physical layer occupies the eMB time-frequency resource unit in a punching mode, the network side equipment can perform rate matching on the downlink resource of the eMB time-frequency resource unit occupied by URLLC service data according to a result negotiated with the UE, so that the physical layer of the base station transmits the URLLC data in a punching or rate matching mode when the URLLC and the eMB are multiplexed.
Before the physical layer performs coding rate adjustment on the occupied eMB time-frequency resource units in a punching mode, allocating eMB time-frequency resources for transmitting eMB service data for the UE, and determining a time domain initial position of resource mapping; determining eMBBB time-frequency resource units available for the UE according to the time domain initial position of the resource mapping; and sequentially mapping the data symbols of the eMBB service data to the available eMBB time-frequency resource units from the time-domain starting position of the resource mapping. And transmitting a code block group CBG on the occupied eMBB time-frequency resource unit for transmitting URLLC service data.
There may be a plurality of methods for determining an eMBB time-frequency resource unit occupied by URLLC service data. For example, one or more symbols s of a time slot t allocated to the UE are determined as eMBB time-frequency resource units occupied by allocated URLLC traffic data. The first indicator identifies one or more symbols s indicating a time slot t. Since URLLC usually adopts wideband form to pre-occupy time-frequency resources, the prediction indication adopts common PDCCH transmission, and uses time-domain symbol level to indicate the resources pre-occupied by URLLC. And, add 1bit information in common PDCCH, instruct URLLC to pre-occupy resources and take place before the physical layer of this time slot eMBB data processes the rate matching.
In one embodiment, a base station sends downlink data to an eMMC UE, and when a burst URLLC service is sent to the URLLC UE in a time slot t, a MAC layer scheduler pre-occupies a broadband resource of one or more symbols s of the time slot t of the eMMC user and allocates the broadband resource to the URLLC UE. The base station sends a symbol s of a time slot t occupied by the URLLC and 1-bit extra information n to the UE through a common PDCCH, wherein the 1-bit extra information n indicates that the pre-occupation of URLLC service data occurs before or after rate matching of downlink resources of the time slot t allocated to the eMBB UE by the base station. The eMBB UE performs demodulation and HARQ ACK/NACK feedback according to the indication content in the common PDCCH.
Hybrid Automatic Repeat reQuest (HARQ) is a technology formed by combining forward error correction coding (FEC) and Automatic Repeat reQuest (ARQ). After receiving the first and second indication information, the UE monitors a control channel of the UE, where the control channel of the UE may be configured the same as the control channel of the UE in the non-camping, or may use a newly defined UE-specific control channel to increase the opportunity available for automatic retransmission.
And the network side retransmits the URLLC service data to the UE through the control channel. For example, a group of code blocks transmitted on an occupied eMBB time-frequency resource unit is retransmitted. And when retransmitting the code block group, estimating the size of the code block group on the basis of the occupied eMBB time-frequency resource units and the size TBS of the transmission block transmitted on the occupied eMBB time-frequency resource units at the MAC layer, and allocating resources for the retransmitted code block group according to the size of the code block group.
And after receiving the first and second indication information in the UE specific control channel, the UE monitors the UE specific control channel, if receiving the retransmission of the pre-occupied resource, the UE combines with the first transmission and then performs HARQ feedback, and if not, the UE feeds back NACK to the CBG corresponding to the pre-occupied resource. And the UE receives the retransmitted URLLC business data, combines the URLLC business data transmitted by the occupied eMBB time-frequency resource unit with the retransmitted URLLC business data, and sends HARQ ACK or NACK based on the combined result. For example, if the combined result is correct, the HARQ ACK message is transmitted.
Fig. 2 is a schematic flow chart of a UE receiving data in an embodiment of a data multiplexing transmission method disclosed in the present invention, as shown in fig. 2:
For example, when the value n of 1bit of the second indication information is 0, the URLLC pre-occupation occurs before rate matching, that is, after the physical layer adopts a puncturing manner to realize occupation of the eMBB time-frequency resource unit by the URLLC service data, the network side device performs rate matching on the downlink resource including the occupied eMBB time-frequency resource unit, the eMBB user data is mapped on the physical resource of the timeslot t except the symbol s by the rate matching manner, the UE performs puncturing processing on the data in the symbol s during demodulation, and when the data demodulation is successful, the timeslot data demodulation is successful, and HARQ ACK is fed back.
In step 203, the UE determines a CBG corresponding to one or more symbols s of the slot t based on the first indication information, and feeds back a HARQ NACK message for the CBG.
For example, when the value n of 1bit of the second indication information is 1, the URLLC pre-occupation occurs after rate matching, that is, after the network side device performs rate matching on the downlink resource including the occupied eMBB time-frequency resource unit, the physical layer uses a puncturing method to achieve occupancy of the emblc service data on the eMBB time-frequency resource unit, the eMBB user data is mapped on the physical resource of the symbol s of the time slot t through the puncturing method, and the user feeds back NACK to the CBG corresponding to the symbol s.
The data multiplexing transmission method provided in the above embodiment can reduce the problem of retransmission resource waste caused by that the pre-occupation occurs before rate matching and the user still feeds back HARQ NACK, improve the utilization efficiency of downlink resources, and fill the gap of the specific scheme of pre-occupation identification transmission when CBG-based downlink transmission URLLC and eMBB multiplexing does not exist at present.
In one embodiment, as shown in fig. 3, the present disclosure provides a network side device 30, including: a data multiplexing unit 31, a data transmitting unit 32, an instruction issuing unit 33 and a feedback receiving unit 34. When the data multiplexing unit 31 generates enhanced mobile broadband eMBB downlink data, it determines an eMBB time-frequency resource unit occupied by low-delay high-reliability communication URLLC service data.
The data sending unit 32 transmits URLLC service data through the occupied eMBB time-frequency resource unit. The instruction issuing unit 33 issues, to the user equipment UE through the control channel, first instruction information for instructing eMBB time-frequency resources occupied by URLLC service data, and second instruction information for instructing the URLLC service data to occupy the eMBB time-frequency resource unit before or after rate matching performed on the eMBB time-frequency resource unit. And the UE demodulates the eMBB downlink data based on the first indication information and the second indication information and sends HARQ ACK or NACK information.
The data multiplexing unit 31 performs coding rate adjustment on the occupied eMMC time-frequency resource units in a punching mode in the physical layer, and maps data symbols of URLLC service data to the occupied eMMC time-frequency resource units to realize occupation of the eMMC time-frequency resource units. The data multiplexing unit 31 allocates an eMB time-frequency resource for transmitting eMB service data for the UE, determines a time domain starting position of resource mapping, determines an eMB time-frequency resource unit available to the UE according to the time domain starting position of the resource mapping, and sequentially maps data symbols of the eMB service data to the available eMB time-frequency resource unit from the time domain starting position of the resource mapping.
The data sending unit 32 transmits the code block group CBG on the occupied eMBB time-frequency resource unit, which is used for transmitting URLLC service data. The data multiplexing unit 31 determines one or more symbols s of a time slot t allocated to the UE as an eMBB time-frequency resource unit occupied by allocated URLLC service data, and the first indication identifier is used to indicate the one or more symbols s of the time slot t.
When the UE determines that the occupancy of the URLLC service data on the slot resources occurs before rate matching according to the second indication information, it performs puncturing on one or more symbols s of the slot t and acquires the service data based on the second indication information, and if the demodulation of the service data is successful, sends an HARQ ACK message to the feedback receiving unit 34.
And when the occupancy of URLLC service data on the eMB time-frequency resource unit is determined to occur after rate matching according to the second indication information, the UE determines a CBG corresponding to one or more symbols s of the time slot t based on the first indication information, and sends HARQ NACK information for the CBG to the feedback receiving unit 34.
Fig. 4 is a block diagram of another embodiment of a network-side device according to the present disclosure. As shown in fig. 4, the apparatus may include a memory 41, a processor 42, a communication interface 43, and a bus 44. The memory 41 is used for storing instructions, the processor 42 is coupled to the memory 41, and the processor 42 is configured to implement the data multiplexing transmission method based on the instructions stored in the memory 41. A memory 41, a processor 42, a communication interface 43 and a bus 44 are provided on the network side device and on the UE.
The memory 41 may be a high-speed RAM memory, a nonvolatile memory (NoN-volatile memory), or the like, and the memory 41 may be a memory array. The storage 41 may also be partitioned into blocks, and the blocks may be combined into virtual volumes according to certain rules. The processor 42 may be a central processing unit CPU, or an application Specific INtegrated circuit asic (application Specific INtegrated circuit), or one or more INtegrated circuits configured to implement the data multiplexing transmission method disclosed herein.
In one embodiment, as shown in fig. 5, the present disclosure provides a communication system comprising: UE36, such as network side device 30 in any of the above embodiments.
The data multiplexing transmission method, the network side device and the communication system provided in the above embodiments determine an eMB time-frequency resource unit occupied by URLLC service data, issue, to a user equipment UE through a control channel, first indication information for indicating an eMB time-frequency resource occupied by the URLLC service data and second indication information for indicating that occupancy of the eMB time-frequency resource unit occurs before or after rate matching is performed on the eMB time-frequency resource unit, and the UE demodulates eMB downlink data based on the first indication information and the second indication information and sends an HARQ ACK or NACK message; the control channel carries the pre-occupation indication information to indicate the pre-occupation resources and whether the pre-occupation occurs before the rate matching, so that the problem that the pre-occupation occurs before the rate matching and the user still feeds back HARQ NACK to cause retransmission resource waste can be reduced, the utilization efficiency of downlink resources is improved, and the blank of the specific scheme of pre-occupation identification transmission when the CBG downlink transmission URLLC and the eMBB are multiplexed is filled.
The disclosed method and system may be implemented in a number of ways. For example, the disclosed methods and systems may be implemented in software, hardware, firmware, or any combination of software, hardware, and firmware. The above-described order for the steps of the method is for illustration only, and the steps of the method disclosed herein are not limited to the order specifically described above unless specifically stated otherwise. Further, in some embodiments, the present disclosure may also be embodied as a program recorded in a recording medium, the program including machine-readable instructions for implementing a method according to the present disclosure. Thus, the present disclosure also covers a recording medium storing a program for executing the method according to the present disclosure.
The description of the present disclosure has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the disclosure in the form disclosed. Many modifications and variations will be apparent to practitioners skilled in this art. The embodiment was chosen and described in order to best explain the principles of the disclosure and the practical application, and to enable others of ordinary skill in the art to understand the disclosure for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (17)
1. A data multiplexing transmission method comprises the following steps:
when enhanced mobile broadband eMMC downlink data are generated, an eMMC time-frequency resource unit occupied by low-delay high-reliability communication URLLC service data is determined, and the URLLC service data are transmitted through the occupied eMMC time-frequency resource unit;
issuing first indication information for indicating eBB time-frequency resources occupied by URLLC service data and second indication information for indicating that the occupation of the eBB time-frequency resource units by the URLLC service data occurs before or after rate matching is performed on the eBB time-frequency resource units to User Equipment (UE) through a control channel;
and the UE demodulates eMBB downlink data based on the first indication information and the second indication information and sends HARQ ACK or NACK information.
2. The method of claim 1, further comprising:
and adjusting the coding rate of the occupied eMBB time-frequency resource units in a punching mode on a physical layer, and mapping the data symbols of the URLLC service data to the occupied eMBB time-frequency resource units to realize the occupation of the eMBB time-frequency resource units.
3. The method of claim 2, further comprising, prior to the physical layer performing coding rate adjustment for the occupied eMBB time-frequency resource units in a puncturing manner:
allocating eMBMS time-frequency resources for transmitting eMBMS data to the UE, and determining a time domain starting position of resource mapping;
determining eMBB time-frequency resource units available for the UE according to the time domain initial position of the resource mapping;
and mapping data symbols of eMBB service data to the available eMBB time-frequency resource units in sequence from the time domain starting position of the resource mapping.
4. The method of claim 2, further comprising:
and transmitting a code block group CBG on the occupied eMBB time frequency resource unit for transmitting the URLLC service data.
5. The method of claim 4, wherein the determining eMBB time-frequency resource units occupied by low-latency high-reliability communication URLLC traffic data comprises:
determining one or more symbols s of the time slot t allocated to the UE as eMBB time-frequency resource units occupied by URLLC service data;
wherein the first indication mark is used for indicating one or more symbols s of the time slot t.
6. The method of claim 5, the UE demodulating eMBB downlink data based on the first indication information and the second indication information and sending a HARQ ACK or NACK message comprising:
and when the occupation of the URLLC service data on the time slot resources is determined to occur before the rate matching is carried out according to the second indication information, the UE carries out punching on one or more symbols s of the time slot t and acquires service data based on the first indication information, and if the demodulation of the service data is successful, an HARQ ACK message is sent.
7. The method of claim 5, the UE demodulating eMBB downlink data based on the first indication information and the second indication information, and sending a HARQ ACK or NACK message comprising:
and when the occupation of the URLLC service data on the eMB time-frequency resource unit is determined to occur after the rate matching according to the second indication information, the UE determines a CBG corresponding to one or more symbols s of the time slot t based on the first indication information, and feeds back HARQ NACK information for the CBG.
8. The method of claim 1, wherein,
the control channel includes: a Physical Downlink Control Channel (PDCCH);
the second indication information includes: a bit used for indicating that the occupation of the eMMC time-frequency resource unit by the URLLC service data occurs before or after the rate matching of the eMMC time-frequency resource unit.
9. A network-side device, comprising:
the data multiplexing unit is used for determining an eMMC time-frequency resource unit occupied by low-delay high-reliability communication URLLC service data when the enhanced mobile broadband eMMC downlink data is generated;
the data sending unit is used for transmitting the URLLC service data through the occupied eMBB time-frequency resource unit;
the system comprises an indication issuing unit and a control unit, wherein the indication issuing unit is used for issuing first indication information for indicating eBB time-frequency resources occupied by URLLC service data and second indication information for indicating that the occupation of the eBB time-frequency resource units by the URLLC service data occurs before or after rate matching is carried out on the eBB time-frequency resource units to User Equipment (UE) through a control channel;
the UE demodulates eMBB downlink data based on the first indication information and the second indication information, and sends HARQ ACK or NACK information.
10. The network-side device of claim 9,
and the data multiplexing unit is used for adjusting the coding rate of the occupied eMMC time-frequency resource unit in a punching mode on a physical layer, mapping the data symbols of the URLLC service data to the occupied eMMC time-frequency resource unit and realizing the occupation of the eMMC time-frequency resource unit.
11. The network-side device of claim 10,
the data multiplexing unit is used for allocating eMB time-frequency resources for transmitting eMB service data for the UE and determining a time domain initial position of resource mapping; determining eMBBB time-frequency resource units available for the UE according to the time domain starting position of the resource mapping; and mapping data symbols of eMBB service data to the available eMBB time-frequency resource units in sequence from the time domain starting position of the resource mapping.
12. The network-side device of claim 10,
and the data sending unit is used for transmitting a code block group CBG on the occupied eMBB time-frequency resource unit and transmitting the URLLC service data.
13. The network-side device of claim 12,
the data multiplexing unit is configured to determine one or more symbols s of the time slot t allocated to the UE as an eMBB time-frequency resource unit occupied by the URLLC service data; wherein the first indication mark is used for indicating one or more symbols s of the time slot t.
14. The network-side device of claim 13, further comprising: a feedback receiving unit;
and when the UE determines that the occupation of the URLLC service data on the time slot resources occurs before the rate matching is performed according to the second indication information, based on the second indication information, punching one or more symbols s of the time slot t and acquiring service data, and if the service data is successfully demodulated, sending an HARQ ACK message to the feedback receiving unit.
15. The network-side device of claim 14,
and when the occupancy of the URLLC service data on the eMB time-frequency resource unit is determined to occur after the rate matching according to the second indication information, the UE determines a CBG corresponding to one or more symbols s of the time slot t based on the first indication information, and sends HARQ NACK information for the CBG to the feedback receiving unit.
16. A communication system, comprising:
UE, network side device according to any of claims 9 to 15.
17. A network-side device, comprising:
a memory; and
a processor coupled to the memory, the processor configured to perform the data multiplexing transmission method of any of claims 1 to 8 based on instructions stored in the memory.
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| CN112020142A (en) * | 2019-05-30 | 2020-12-01 | 中国电信股份有限公司 | Data multiplexing transmission method, base station, terminal, and storage medium |
| CN110971385B (en) * | 2019-11-22 | 2022-10-28 | 展讯通信（上海）有限公司 | Method, device, equipment and storage medium for indicating occupation |
| CN112888072B (en) * | 2021-01-25 | 2023-01-31 | 陕西师范大学 | eMBB and URLLC resource multiplexing method for guaranteeing service requirements |
| CN113596817B (en) * | 2021-07-29 | 2023-08-01 | 重庆御芯微信息技术有限公司 | Multi-terminal physical resource allocation method of wireless access point |
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